diff options
Diffstat (limited to 'target/linux/etrax/patches/cris/003-drivers-cris.patch')
| -rw-r--r-- | target/linux/etrax/patches/cris/003-drivers-cris.patch | 22601 |
1 files changed, 0 insertions, 22601 deletions
diff --git a/target/linux/etrax/patches/cris/003-drivers-cris.patch b/target/linux/etrax/patches/cris/003-drivers-cris.patch deleted file mode 100644 index 1f42fc86e6..0000000000 --- a/target/linux/etrax/patches/cris/003-drivers-cris.patch +++ /dev/null @@ -1,22601 +0,0 @@ -diff -urN linux-2.6.19.2.orig/drivers/ide/cris/ide-cris.c linux-2.6.19.2.dev/drivers/ide/cris/ide-cris.c ---- linux-2.6.19.2.orig/drivers/ide/cris/ide-cris.c 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/ide/cris/ide-cris.c 2006-12-06 14:17:02.000000000 +0100 -@@ -1,8 +1,8 @@ --/* $Id: cris-ide-driver.patch,v 1.1 2005/06/29 21:39:07 akpm Exp $ -+/* $Id: ide-cris.c,v 1.10 2006/12/06 13:17:02 starvik Exp $ - * - * Etrax specific IDE functions, like init and PIO-mode setting etc. - * Almost the entire ide.c is used for the rest of the Etrax ATA driver. -- * Copyright (c) 2000-2005 Axis Communications AB -+ * Copyright (c) 2000-2006 Axis Communications AB - * - * Authors: Bjorn Wesen (initial version) - * Mikael Starvik (crisv32 port) -@@ -43,8 +43,8 @@ - - #define IDE_REGISTER_TIMEOUT 300 - --#define LOWDB(x) --#define D(x) -+#define LOWDB(x) -+#define D(x) - - enum /* Transfer types */ - { -@@ -88,12 +88,50 @@ - #define ATA_PIO0_STROBE 39 - #define ATA_PIO0_HOLD 9 - --int -+/* -+ * On ETRAX FS, an interrupt remains latched and active until ack:ed. -+ * Further, ATA acks are without effect as long as INTRQ is asserted, as the -+ * corresponding ATA interrupt is continuously set to active. There will be a -+ * clearing ack at the usual cris_ide_ack_intr call, but that serves just to -+ * gracefully handle an actual spurious interrupt or similar situation (which -+ * will cause an early return without further actions, see the ide_intr -+ * function). -+ * -+ * However, the normal case at time of this writing is that nothing has -+ * changed from when INTRQ was asserted until the cris_ide_ack_intr call; no -+ * ATA registers written and no status register read, so INTRQ will *remain* -+ * asserted, thus *another* interrupt will be latched, and will be seen as a -+ * spurious interrupt after the "real" interrupt is serviced. With lots of -+ * ATA traffic (as in a trivial file-copy between two drives), this will trig -+ * the condition desc->irqs_unhandled > 99900 in -+ * kernel/irq/spurious.c:note_interrupt and the system will halt. -+ * -+ * To actually get rid of the interrupt corresponding to the current INTRQ -+ * assertion, we make a second ack after the next ATA register read or write; -+ * i.e. when INTRQ must be deasserted. At that time, we don't have the hwif -+ * pointer available, so we need to stash a local copy (safe, because it'll be -+ * set and cleared within the same spin_lock_irqsave region). The pointer -+ * serves doubly as a boolean flag that an ack is needed. The caller must -+ * NULL the pointer after the "second ack". -+ */ -+ -+static ide_hwif_t *hwif_to_ack; -+ -+static int - cris_ide_ack_intr(ide_hwif_t* hwif) - { -- reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, -+ /* -+ * The interrupt is shared so we need to find the interface bit number -+ * to ack. We define the ATA I/O register addresses to have the -+ * format of ata rw_ctrl2 register contents, conveniently holding this -+ * number. -+ */ -+ reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, - int, hwif->io_ports[0]); - REG_WR_INT(ata, regi_ata, rw_ack_intr, 1 << ctrl2.sel); -+ -+ /* Prepare to ack again, see above. */ -+ hwif_to_ack = hwif; - return 1; - } - -@@ -122,8 +160,24 @@ - - static void - cris_ide_write_command(unsigned long command) --{ -+{ - REG_WR_INT(ata, regi_ata, rw_ctrl2, command); /* write data to the drive's register */ -+ -+ /* -+ * Perform a pending ack if needed; see hwif_ack definition. Perhaps -+ * we should check closer that this call is really a part of the -+ * preparation to read the ATA status register or write to the ATA -+ * command register (causing deassert of INTRQ; see the ATA standard), -+ * but at time of this writing (and expected to sanely remain so), the -+ * first ATA register activity after an cris_ide_ack_intr call is -+ * certain to do exactly that. -+ */ -+ if (hwif_to_ack) { -+ /* The drive may take this long to deassert INTRQ. */ -+ ndelay(400); -+ cris_ide_ack_intr(hwif_to_ack); -+ hwif_to_ack = NULL; -+ } - } - - static void -@@ -160,8 +214,8 @@ - { - reg_ata_rw_ctrl2 ctrl2 = {0}; - ctrl2.addr = addr; -- ctrl2.cs1 = cs1; -- ctrl2.cs0 = cs0; -+ ctrl2.cs1 = !cs1; -+ ctrl2.cs0 = !cs0; - return REG_TYPE_CONV(int, reg_ata_rw_ctrl2, ctrl2); - } - -@@ -184,14 +238,14 @@ - - intr_mask.bus0 = regk_ata_yes; - intr_mask.bus1 = regk_ata_yes; -- intr_mask.bus2 = regk_ata_yes; -+ intr_mask.bus2 = regk_ata_yes; - intr_mask.bus3 = regk_ata_yes; - - REG_WR(ata, regi_ata, rw_intr_mask, intr_mask); - - crisv32_request_dma(2, "ETRAX FS built-in ATA", DMA_VERBOSE_ON_ERROR, 0, dma_ata); - crisv32_request_dma(3, "ETRAX FS built-in ATA", DMA_VERBOSE_ON_ERROR, 0, dma_ata); -- -+ - crisv32_pinmux_alloc_fixed(pinmux_ata); - crisv32_pinmux_alloc_fixed(pinmux_ata0); - crisv32_pinmux_alloc_fixed(pinmux_ata1); -@@ -204,14 +258,15 @@ - DMA_ENABLE(regi_dma3); - - DMA_WR_CMD (regi_dma2, regk_dma_set_w_size2); -- DMA_WR_CMD (regi_dma3, regk_dma_set_w_size2); -+ DMA_WR_CMD (regi_dma3, regk_dma_set_w_size2); - } - - static dma_descr_context mycontext __attribute__ ((__aligned__(32))); - - #define cris_dma_descr_type dma_descr_data --#define cris_pio_read regk_ata_rd --#define cris_ultra_mask 0x7 -+#define cris_pio_read (regk_ata_rd << 24) -+#define cris_ultra_mask 0x0 /* 0x7 for UDMA */ -+#define IRQ ATA_INTR_VECT - #define MAX_DESCR_SIZE 0xffffffffUL - - static unsigned long -@@ -226,6 +281,8 @@ - d->buf = (char*)virt_to_phys(buf); - d->after = d->buf + len; - d->eol = last; -+ /* assume descriptors are consecutively placed in memory */ -+ d->next = last ? 0 : (cris_dma_descr_type*)virt_to_phys(d+1); - } - - static void -@@ -237,8 +294,10 @@ - mycontext.saved_data = (dma_descr_data*)virt_to_phys(d); - mycontext.saved_data_buf = d->buf; - /* start the dma channel */ -+ if (dir) -+ flush_dma_context(&mycontext); // Cache bug workaround - DMA_START_CONTEXT(dir ? regi_dma3 : regi_dma2, virt_to_phys(&mycontext)); -- -+ - /* initiate a multi word dma read using PIO handshaking */ - trf_cnt.cnt = len >> 1; - /* Due to a "feature" the transfer count has to be one extra word for UDMA. */ -@@ -248,7 +307,7 @@ - - ctrl2.rw = dir ? regk_ata_rd : regk_ata_wr; - ctrl2.trf_mode = regk_ata_dma; -- ctrl2.hsh = type == TYPE_PIO ? regk_ata_pio : -+ ctrl2.hsh = type == TYPE_PIO ? regk_ata_pio : - type == TYPE_DMA ? regk_ata_dma : regk_ata_udma; - ctrl2.multi = regk_ata_yes; - ctrl2.dma_size = regk_ata_word; -@@ -339,7 +398,7 @@ - #define ATA_PIO0_STROBE 19 - #define ATA_PIO0_HOLD 4 - --int -+int - cris_ide_ack_intr(ide_hwif_t* hwif) - { - return 1; -@@ -348,13 +407,13 @@ - static inline int - cris_ide_busy(void) - { -- return *R_ATA_STATUS_DATA & IO_MASK(R_ATA_STATUS_DATA, busy) ; -+ return *R_ATA_STATUS_DATA & IO_MASK(R_ATA_STATUS_DATA, busy) ; - } - - static inline int - cris_ide_ready(void) - { -- return *R_ATA_STATUS_DATA & IO_MASK(R_ATA_STATUS_DATA, tr_rdy) ; -+ return *R_ATA_STATUS_DATA & IO_MASK(R_ATA_STATUS_DATA, tr_rdy) ; - } - - static inline int -@@ -364,12 +423,12 @@ - *data = (unsigned short)status; - return status & IO_MASK(R_ATA_STATUS_DATA, dav); - } -- -+ - static void - cris_ide_write_command(unsigned long command) - { -- *R_ATA_CTRL_DATA = command; --} -+ *R_ATA_CTRL_DATA = command; -+} - - static void - cris_ide_set_speed(int type, int setup, int strobe, int hold) -@@ -406,8 +465,8 @@ - cris_ide_reg_addr(unsigned long addr, int cs0, int cs1) - { - return IO_FIELD(R_ATA_CTRL_DATA, addr, addr) | -- IO_FIELD(R_ATA_CTRL_DATA, cs0, cs0) | -- IO_FIELD(R_ATA_CTRL_DATA, cs1, cs1); -+ IO_FIELD(R_ATA_CTRL_DATA, cs0, cs0 ? 0 : 1) | -+ IO_FIELD(R_ATA_CTRL_DATA, cs1, cs1 ? 0 : 1); - } - - static __init void -@@ -484,6 +543,7 @@ - #define cris_dma_descr_type etrax_dma_descr - #define cris_pio_read IO_STATE(R_ATA_CTRL_DATA, rw, read) - #define cris_ultra_mask 0x0 -+#define IRQ 4 - #define MAX_DESCR_SIZE 0x10000UL - - static unsigned long -@@ -497,8 +557,8 @@ - { - d->buf = virt_to_phys(buf); - d->sw_len = len == MAX_DESCR_SIZE ? 0 : len; -- if (last) -- d->ctrl |= d_eol; -+ d->ctrl = last ? d_eol : 0; -+ d->next = last ? 0 : virt_to_phys(d+1); /* assumes descr's in array */ - } - - static void cris_ide_start_dma(ide_drive_t *drive, cris_dma_descr_type *d, int dir, int type, int len) -@@ -521,14 +581,14 @@ - *R_DMA_CH2_FIRST = virt_to_phys(d); - *R_DMA_CH2_CMD = IO_STATE(R_DMA_CH2_CMD, cmd, start); - } -- -+ - /* initiate a multi word dma read using DMA handshaking */ - - *R_ATA_TRANSFER_CNT = - IO_FIELD(R_ATA_TRANSFER_CNT, count, len >> 1); - - cmd = dir ? IO_STATE(R_ATA_CTRL_DATA, rw, read) : IO_STATE(R_ATA_CTRL_DATA, rw, write); -- cmd |= type == TYPE_PIO ? IO_STATE(R_ATA_CTRL_DATA, handsh, pio) : -+ cmd |= type == TYPE_PIO ? IO_STATE(R_ATA_CTRL_DATA, handsh, pio) : - IO_STATE(R_ATA_CTRL_DATA, handsh, dma); - *R_ATA_CTRL_DATA = - cmd | -@@ -570,7 +630,7 @@ - } - - #endif -- -+ - void - cris_ide_outw(unsigned short data, unsigned long reg) { - int timeleft; -@@ -597,7 +657,7 @@ - if(!timeleft) - printk("ATA timeout reg 0x%lx := 0x%x\n", reg, data); - -- cris_ide_write_command(reg|data); /* write data to the drive's register */ -+ cris_ide_write_command(reg|data); /* write data to the drive's register */ - - timeleft = IDE_REGISTER_TIMEOUT; - /* wait for transmitter ready */ -@@ -684,13 +744,15 @@ - static void cris_atapi_output_bytes(ide_drive_t *drive, void *, unsigned int); - static int cris_dma_off (ide_drive_t *drive); - static int cris_dma_on (ide_drive_t *drive); -+static int cris_dma_host_off (ide_drive_t *drive); -+static int cris_dma_host_on (ide_drive_t *drive); - - static void tune_cris_ide(ide_drive_t *drive, u8 pio) - { - int setup, strobe, hold; - - switch(pio) -- { -+ { - case 0: - setup = ATA_PIO0_SETUP; - strobe = ATA_PIO0_STROBE; -@@ -715,7 +777,7 @@ - setup = ATA_PIO4_SETUP; - strobe = ATA_PIO4_STROBE; - hold = ATA_PIO4_HOLD; -- break; -+ break; - default: - return; - } -@@ -733,7 +795,7 @@ - } - - switch(speed) -- { -+ { - case XFER_UDMA_0: - cyc = ATA_UDMA0_CYC; - dvs = ATA_UDMA0_DVS; -@@ -765,7 +827,7 @@ - if (speed >= XFER_UDMA_0) - cris_ide_set_speed(TYPE_UDMA, cyc, dvs, 0); - else -- cris_ide_set_speed(TYPE_DMA, 0, strobe, hold); -+ cris_ide_set_speed(TYPE_DMA, 0, strobe, hold); - - return 0; - } -@@ -790,11 +852,13 @@ - - for(h = 0; h < MAX_HWIFS; h++) { - ide_hwif_t *hwif = &ide_hwifs[h]; -- ide_setup_ports(&hw, cris_ide_base_address(h), -+ memset(&hw, 0, sizeof(hw)); -+ ide_setup_ports(&hw, cris_ide_base_address(h), - ide_offsets, - 0, 0, cris_ide_ack_intr, -- ide_default_irq(0)); -+ IRQ); - ide_register_hw(&hw, &hwif); -+ hwif->irq = IRQ; - hwif->mmio = 2; - hwif->chipset = ide_etrax100; - hwif->tuneproc = &tune_cris_ide; -@@ -814,13 +878,15 @@ - hwif->OUTBSYNC = &cris_ide_outbsync; - hwif->INB = &cris_ide_inb; - hwif->INW = &cris_ide_inw; -- hwif->ide_dma_host_off = &cris_dma_off; -- hwif->ide_dma_host_on = &cris_dma_on; -+ hwif->ide_dma_host_off = &cris_dma_host_off; -+ hwif->ide_dma_host_on = &cris_dma_host_on; - hwif->ide_dma_off_quietly = &cris_dma_off; -+ hwif->ide_dma_on = &cris_dma_on; - hwif->udma_four = 0; - hwif->ultra_mask = cris_ultra_mask; - hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */ - hwif->swdma_mask = 0x07; /* Singleword DMA 0-2 */ -+ hwif->rqsize = 256; - } - - /* Reset pulse */ -@@ -835,13 +901,25 @@ - cris_ide_set_speed(TYPE_UDMA, ATA_UDMA2_CYC, ATA_UDMA2_DVS, 0); - } - -+static int cris_dma_host_off (ide_drive_t *drive) -+{ -+ return 0; -+} -+ -+static int cris_dma_host_on (ide_drive_t *drive) -+{ -+ return 0; -+} -+ - static int cris_dma_off (ide_drive_t *drive) - { -+ drive->using_dma = 0; - return 0; - } - - static int cris_dma_on (ide_drive_t *drive) - { -+ drive->using_dma = 1; - return 0; - } - -@@ -958,30 +1036,28 @@ - size += sg_dma_len(sg); - } - -- /* did we run out of descriptors? */ -- -- if(count >= MAX_DMA_DESCRS) { -- printk("%s: too few DMA descriptors\n", drive->name); -- return 1; -- } -- -- /* however, this case is more difficult - rw_trf_cnt cannot be more -- than 65536 words per transfer, so in that case we need to either -+ /* rw_trf_cnt cannot be more than 131072 words per transfer, -+ (- 1 word for UDMA CRC) so in that case we need to either: - 1) use a DMA interrupt to re-trigger rw_trf_cnt and continue with - the descriptors, or - 2) simply do the request here, and get dma_intr to only ide_end_request on - those blocks that were actually set-up for transfer. -+ (The ide framework will issue a new request for the remainder) - */ - -- if(ata_tot_size + size > 131072) { -+ if(ata_tot_size + size > 262140) { - printk("too large total ATA DMA request, %d + %d!\n", ata_tot_size, (int)size); - return 1; - } - -- /* If size > MAX_DESCR_SIZE it has to be splitted into new descriptors. Since we -- don't handle size > 131072 only one split is necessary */ -+ /* If size > MAX_DESCR_SIZE it has to be splitted into new descriptors. */ - -- if(size > MAX_DESCR_SIZE) { -+ while (size > MAX_DESCR_SIZE) { -+ /* did we run out of descriptors? */ -+ if(count >= MAX_DMA_DESCRS) { -+ printk("%s: too few DMA descriptors\n", drive->name); -+ return 1; -+ } - cris_ide_fill_descriptor(&ata_descrs[count], (void*)addr, MAX_DESCR_SIZE, 0); - count++; - ata_tot_size += MAX_DESCR_SIZE; -@@ -989,6 +1065,11 @@ - addr += MAX_DESCR_SIZE; - } - -+ /* did we run out of descriptors? */ -+ if(count >= MAX_DMA_DESCRS) { -+ printk("%s: too few DMA descriptors\n", drive->name); -+ return 1; -+ } - cris_ide_fill_descriptor(&ata_descrs[count], (void*)addr, size,i ? 0 : 1); - count++; - ata_tot_size += size; -@@ -1050,8 +1131,12 @@ - - if (id && (id->capability & 1)) { - if (ide_use_dma(drive)) { -- if (cris_config_drive_for_dma(drive)) -- return hwif->ide_dma_on(drive); -+ if (cris_config_drive_for_dma(drive)) { -+ if (hwif->ide_dma_on) -+ return hwif->ide_dma_on(drive); -+ else -+ return 1; -+ } - } - } - ---- linux-2.6.19.2.orig/drivers/serial/crisv10.c 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/serial/crisv10.c 2007-01-09 10:30:54.000000000 +0100 -@@ -2,7 +2,7 @@ - * - * Serial port driver for the ETRAX 100LX chip - * -- * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Axis Communications AB -+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Axis Communications AB - * - * Many, many authors. Based once upon a time on serial.c for 16x50. - * -@@ -445,6 +445,7 @@ - - #include <asm/io.h> - #include <asm/irq.h> -+#include <asm/dma.h> - #include <asm/system.h> - #include <asm/bitops.h> - #include <linux/delay.h> -@@ -454,8 +455,9 @@ - /* non-arch dependent serial structures are in linux/serial.h */ - #include <linux/serial.h> - /* while we keep our own stuff (struct e100_serial) in a local .h file */ --#include "serial.h" -+#include "crisv10.h" - #include <asm/fasttimer.h> -+#include <asm/arch/io_interface_mux.h> - - #ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER - #ifndef CONFIG_ETRAX_FAST_TIMER -@@ -586,11 +588,10 @@ - static void change_speed(struct e100_serial *info); - static void rs_throttle(struct tty_struct * tty); - static void rs_wait_until_sent(struct tty_struct *tty, int timeout); --static int rs_write(struct tty_struct * tty, int from_user, -+static int rs_write(struct tty_struct * tty, - const unsigned char *buf, int count); - #ifdef CONFIG_ETRAX_RS485 --static int e100_write_rs485(struct tty_struct * tty, int from_user, -- const unsigned char *buf, int count); -+static int e100_write_rs485(struct tty_struct * tty, const unsigned char *buf, int count); - #endif - static int get_lsr_info(struct e100_serial * info, unsigned int *value); - -@@ -677,20 +678,39 @@ - .rx_ctrl = DEF_RX, - .tx_ctrl = DEF_TX, - .iseteop = 2, -+ .dma_owner = dma_ser0, -+ .io_if = if_serial_0, - #ifdef CONFIG_ETRAX_SERIAL_PORT0 - .enabled = 1, - #ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT - .dma_out_enabled = 1, -+ .dma_out_nbr = SER0_TX_DMA_NBR, -+ .dma_out_irq_nbr = SER0_DMA_TX_IRQ_NBR, -+ .dma_out_irq_flags = IRQF_DISABLED, -+ .dma_out_irq_description = "serial 0 dma tr", - #else - .dma_out_enabled = 0, -+ .dma_out_nbr = UINT_MAX, -+ .dma_out_irq_nbr = 0, -+ .dma_out_irq_flags = 0, -+ .dma_out_irq_description = NULL, - #endif - #ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN - .dma_in_enabled = 1, -+ .dma_in_nbr = SER0_RX_DMA_NBR, -+ .dma_in_irq_nbr = SER0_DMA_RX_IRQ_NBR, -+ .dma_in_irq_flags = IRQF_DISABLED, -+ .dma_in_irq_description = "serial 0 dma rec", - #else -- .dma_in_enabled = 0 -+ .dma_in_enabled = 0, -+ .dma_in_nbr = UINT_MAX, -+ .dma_in_irq_nbr = 0, -+ .dma_in_irq_flags = 0, -+ .dma_in_irq_description = NULL, - #endif - #else - .enabled = 0, -+ .io_if_description = NULL, - .dma_out_enabled = 0, - .dma_in_enabled = 0 - #endif -@@ -712,20 +732,42 @@ - .rx_ctrl = DEF_RX, - .tx_ctrl = DEF_TX, - .iseteop = 3, -+ .dma_owner = dma_ser1, -+ .io_if = if_serial_1, - #ifdef CONFIG_ETRAX_SERIAL_PORT1 - .enabled = 1, -+ .io_if_description = "ser1", - #ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA8_OUT - .dma_out_enabled = 1, -+ .dma_out_nbr = SER1_TX_DMA_NBR, -+ .dma_out_irq_nbr = SER1_DMA_TX_IRQ_NBR, -+ .dma_out_irq_flags = IRQF_DISABLED, -+ .dma_out_irq_description = "serial 1 dma tr", - #else - .dma_out_enabled = 0, -+ .dma_out_nbr = UINT_MAX, -+ .dma_out_irq_nbr = 0, -+ .dma_out_irq_flags = 0, -+ .dma_out_irq_description = NULL, - #endif - #ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA9_IN - .dma_in_enabled = 1, -+ .dma_in_nbr = SER1_RX_DMA_NBR, -+ .dma_in_irq_nbr = SER1_DMA_RX_IRQ_NBR, -+ .dma_in_irq_flags = IRQF_DISABLED, -+ .dma_in_irq_description = "serial 1 dma rec", - #else -- .dma_in_enabled = 0 -+ .dma_in_enabled = 0, -+ .dma_in_enabled = 0, -+ .dma_in_nbr = UINT_MAX, -+ .dma_in_irq_nbr = 0, -+ .dma_in_irq_flags = 0, -+ .dma_in_irq_description = NULL, - #endif - #else - .enabled = 0, -+ .io_if_description = NULL, -+ .dma_in_irq_nbr = 0, - .dma_out_enabled = 0, - .dma_in_enabled = 0 - #endif -@@ -746,20 +788,40 @@ - .rx_ctrl = DEF_RX, - .tx_ctrl = DEF_TX, - .iseteop = 0, -+ .dma_owner = dma_ser2, -+ .io_if = if_serial_2, - #ifdef CONFIG_ETRAX_SERIAL_PORT2 - .enabled = 1, -+ .io_if_description = "ser2", - #ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT - .dma_out_enabled = 1, -+ .dma_out_nbr = SER2_TX_DMA_NBR, -+ .dma_out_irq_nbr = SER2_DMA_TX_IRQ_NBR, -+ .dma_out_irq_flags = IRQF_DISABLED, -+ .dma_out_irq_description = "serial 2 dma tr", - #else - .dma_out_enabled = 0, -+ .dma_in_nbr = UINT_MAX, -+ .dma_in_irq_nbr = 0, -+ .dma_in_irq_flags = 0, -+ .dma_in_irq_description = NULL, - #endif - #ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN - .dma_in_enabled = 1, -+ .dma_in_nbr = SER2_RX_DMA_NBR, -+ .dma_in_irq_nbr = SER2_DMA_RX_IRQ_NBR, -+ .dma_in_irq_flags = IRQF_DISABLED, -+ .dma_in_irq_description = "serial 2 dma rec", - #else -- .dma_in_enabled = 0 -+ .dma_in_enabled = 0, -+ .dma_in_nbr = UINT_MAX, -+ .dma_in_irq_nbr = 0, -+ .dma_in_irq_flags = 0, -+ .dma_in_irq_description = NULL, - #endif - #else - .enabled = 0, -+ .io_if_description = NULL, - .dma_out_enabled = 0, - .dma_in_enabled = 0 - #endif -@@ -780,20 +842,40 @@ - .rx_ctrl = DEF_RX, - .tx_ctrl = DEF_TX, - .iseteop = 1, -+ .dma_owner = dma_ser3, -+ .io_if = if_serial_3, - #ifdef CONFIG_ETRAX_SERIAL_PORT3 - .enabled = 1, -+ .io_if_description = "ser3", - #ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA4_OUT - .dma_out_enabled = 1, -+ .dma_out_nbr = SER3_TX_DMA_NBR, -+ .dma_out_irq_nbr = SER3_DMA_TX_IRQ_NBR, -+ .dma_out_irq_flags = IRQF_DISABLED, -+ .dma_out_irq_description = "serial 3 dma tr", - #else - .dma_out_enabled = 0, -+ .dma_out_nbr = UINT_MAX, -+ .dma_out_irq_nbr = 0, -+ .dma_out_irq_flags = 0, -+ .dma_out_irq_description = NULL, - #endif - #ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN - .dma_in_enabled = 1, -+ .dma_in_nbr = SER3_RX_DMA_NBR, -+ .dma_in_irq_nbr = SER3_DMA_RX_IRQ_NBR, -+ .dma_in_irq_flags = IRQF_DISABLED, -+ .dma_in_irq_description = "serial 3 dma rec", - #else -- .dma_in_enabled = 0 -+ .dma_in_enabled = 0, -+ .dma_in_nbr = UINT_MAX, -+ .dma_in_irq_nbr = 0, -+ .dma_in_irq_flags = 0, -+ .dma_in_irq_description = NULL - #endif - #else - .enabled = 0, -+ .io_if_description = NULL, - .dma_out_enabled = 0, - .dma_in_enabled = 0 - #endif -@@ -1414,12 +1496,11 @@ - { - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - *e100_modem_pins[info->line].dtr_shadow &= ~mask; - *e100_modem_pins[info->line].dtr_shadow |= (set ? 0 : mask); - *e100_modem_pins[info->line].dtr_port = *e100_modem_pins[info->line].dtr_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - - #ifdef SERIAL_DEBUG_IO -@@ -1438,12 +1519,11 @@ - { - #ifndef CONFIG_SVINTO_SIM - unsigned long flags; -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - info->rx_ctrl &= ~E100_RTS_MASK; - info->rx_ctrl |= (set ? 0 : E100_RTS_MASK); /* RTS is active low */ - info->port[REG_REC_CTRL] = info->rx_ctrl; -- restore_flags(flags); -+ local_irq_restore(flags); - #ifdef SERIAL_DEBUG_IO - printk("ser%i rts %i\n", info->line, set); - #endif -@@ -1461,12 +1541,11 @@ - unsigned char mask = e100_modem_pins[info->line].ri_mask; - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - *e100_modem_pins[info->line].ri_shadow &= ~mask; - *e100_modem_pins[info->line].ri_shadow |= (set ? 0 : mask); - *e100_modem_pins[info->line].ri_port = *e100_modem_pins[info->line].ri_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - #endif - } -@@ -1479,12 +1558,11 @@ - unsigned char mask = e100_modem_pins[info->line].cd_mask; - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - *e100_modem_pins[info->line].cd_shadow &= ~mask; - *e100_modem_pins[info->line].cd_shadow |= (set ? 0 : mask); - *e100_modem_pins[info->line].cd_port = *e100_modem_pins[info->line].cd_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - #endif - } -@@ -1558,8 +1636,7 @@ - /* Disable output DMA channel for the serial port in question - * ( set to something other then serialX) - */ -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - DFLOW(DEBUG_LOG(info->line, "disable_txdma_channel %i\n", info->line)); - if (info->line == 0) { - if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma6)) == -@@ -1587,7 +1664,7 @@ - } - } - *R_GEN_CONFIG = genconfig_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - - -@@ -1595,8 +1672,7 @@ - { - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - DFLOW(DEBUG_LOG(info->line, "enable_txdma_channel %i\n", info->line)); - /* Enable output DMA channel for the serial port in question */ - if (info->line == 0) { -@@ -1613,7 +1689,7 @@ - genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, serial3); - } - *R_GEN_CONFIG = genconfig_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - - static void e100_disable_rxdma_channel(struct e100_serial *info) -@@ -1623,8 +1699,7 @@ - /* Disable input DMA channel for the serial port in question - * ( set to something other then serialX) - */ -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - if (info->line == 0) { - if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma7)) == - IO_STATE(R_GEN_CONFIG, dma7, serial0)) { -@@ -1651,7 +1726,7 @@ - } - } - *R_GEN_CONFIG = genconfig_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - - -@@ -1659,8 +1734,7 @@ - { - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - /* Enable input DMA channel for the serial port in question */ - if (info->line == 0) { - genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma7); -@@ -1676,7 +1750,7 @@ - genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, serial3); - } - *R_GEN_CONFIG = genconfig_shadow; -- restore_flags(flags); -+ local_irq_restore(flags); - } - - #ifdef SERIAL_HANDLE_EARLY_ERRORS -@@ -1783,7 +1857,7 @@ - } - - static int --e100_write_rs485(struct tty_struct *tty, int from_user, -+e100_write_rs485(struct tty_struct *tty, - const unsigned char *buf, int count) - { - struct e100_serial * info = (struct e100_serial *)tty->driver_data; -@@ -1796,7 +1870,7 @@ - */ - info->rs485.enabled = 1; - /* rs_write now deals with RS485 if enabled */ -- count = rs_write(tty, from_user, buf, count); -+ count = rs_write(tty, buf, count); - info->rs485.enabled = old_enabled; - return count; - } -@@ -1834,7 +1908,7 @@ - unsigned long flags; - unsigned long xoff; - -- save_flags(flags); cli(); -+ local_irq_save(flags); - DFLOW(DEBUG_LOG(info->line, "XOFF rs_stop xmit %i\n", - CIRC_CNT(info->xmit.head, - info->xmit.tail,SERIAL_XMIT_SIZE))); -@@ -1846,7 +1920,7 @@ - } - - *((unsigned long *)&info->port[REG_XOFF]) = xoff; -- restore_flags(flags); -+ local_irq_restore(flags); - } - } - -@@ -1858,7 +1932,7 @@ - unsigned long flags; - unsigned long xoff; - -- save_flags(flags); cli(); -+ local_irq_save(flags); - DFLOW(DEBUG_LOG(info->line, "XOFF rs_start xmit %i\n", - CIRC_CNT(info->xmit.head, - info->xmit.tail,SERIAL_XMIT_SIZE))); -@@ -1873,7 +1947,7 @@ - info->xmit.head != info->xmit.tail && info->xmit.buf) - e100_enable_serial_tx_ready_irq(info); - -- restore_flags(flags); -+ local_irq_restore(flags); - } - } - -@@ -2053,8 +2127,7 @@ - static void flush_timeout_function(unsigned long data); - #define START_FLUSH_FAST_TIMER_TIME(info, string, usec) {\ - unsigned long timer_flags; \ -- save_flags(timer_flags); \ -- cli(); \ -+ local_irq_save(timer_flags); \ - if (fast_timers[info->line].function == NULL) { \ - serial_fast_timer_started++; \ - TIMERD(DEBUG_LOG(info->line, "start_timer %i ", info->line)); \ -@@ -2068,7 +2141,7 @@ - else { \ - TIMERD(DEBUG_LOG(info->line, "timer %i already running\n", info->line)); \ - } \ -- restore_flags(timer_flags); \ -+ local_irq_restore(timer_flags); \ - } - #define START_FLUSH_FAST_TIMER(info, string) START_FLUSH_FAST_TIMER_TIME(info, string, info->flush_time_usec) - -@@ -2097,8 +2170,7 @@ - { - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - - if (!info->first_recv_buffer) - info->first_recv_buffer = buffer; -@@ -2111,7 +2183,7 @@ - if (info->recv_cnt > info->max_recv_cnt) - info->max_recv_cnt = info->recv_cnt; - -- restore_flags(flags); -+ local_irq_restore(flags); - } - - static int -@@ -2131,11 +2203,7 @@ - info->icount.rx++; - } else { - struct tty_struct *tty = info->tty; -- *tty->flip.char_buf_ptr = data; -- *tty->flip.flag_buf_ptr = flag; -- tty->flip.flag_buf_ptr++; -- tty->flip.char_buf_ptr++; -- tty->flip.count++; -+ tty_insert_flip_char(tty, data, flag); - info->icount.rx++; - } - -@@ -2320,7 +2388,6 @@ - */ - return; - #endif -- info->tty->flip.count = 0; - if (info->uses_dma_in) { - /* reset the input dma channel to be sure it works */ - -@@ -2482,70 +2549,21 @@ - { - struct tty_struct *tty; - struct etrax_recv_buffer *buffer; -- unsigned int length; - unsigned long flags; -- int max_flip_size; -- -- if (!info->first_recv_buffer) -- return; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); -+ tty = info->tty; - -- if (!(tty = info->tty)) { -- restore_flags(flags); -+ if (!tty) { -+ local_irq_restore(flags); - return; - } - -- length = tty->flip.count; -- /* Don't flip more than the ldisc has room for. -- * The return value from ldisc.receive_room(tty) - might not be up to -- * date, the previous flip of up to TTY_FLIPBUF_SIZE might be on the -- * processed and not accounted for yet. -- * Since we use DMA, 1 SERIAL_DESCR_BUF_SIZE could be on the way. -- * Lets buffer data here and let flow control take care of it. -- * Since we normally flip large chunks, the ldisc don't react -- * with throttle until too late if we flip to much. -- */ -- max_flip_size = tty->ldisc.receive_room(tty); -- if (max_flip_size < 0) -- max_flip_size = 0; -- if (max_flip_size <= (TTY_FLIPBUF_SIZE + /* Maybe not accounted for */ -- length + info->recv_cnt + /* We have this queued */ -- 2*SERIAL_DESCR_BUF_SIZE + /* This could be on the way */ -- TTY_THRESHOLD_THROTTLE)) { /* Some slack */ -- /* check TTY_THROTTLED first so it indicates our state */ -- if (!test_and_set_bit(TTY_THROTTLED, &tty->flags)) { -- DFLOW(DEBUG_LOG(info->line,"flush_to_flip throttles room %lu\n", max_flip_size)); -- rs_throttle(tty); -- } --#if 0 -- else if (max_flip_size <= (TTY_FLIPBUF_SIZE + /* Maybe not accounted for */ -- length + info->recv_cnt + /* We have this queued */ -- SERIAL_DESCR_BUF_SIZE + /* This could be on the way */ -- TTY_THRESHOLD_THROTTLE)) { /* Some slack */ -- DFLOW(DEBUG_LOG(info->line,"flush_to_flip throttles again! %lu\n", max_flip_size)); -- rs_throttle(tty); -- } --#endif -- } -- -- if (max_flip_size > TTY_FLIPBUF_SIZE) -- max_flip_size = TTY_FLIPBUF_SIZE; -- -- while ((buffer = info->first_recv_buffer) && length < max_flip_size) { -+ while ((buffer = info->first_recv_buffer)) { - unsigned int count = buffer->length; - -- if (length + count > max_flip_size) -- count = max_flip_size - length; -- -- memcpy(tty->flip.char_buf_ptr + length, buffer->buffer, count); -- memset(tty->flip.flag_buf_ptr + length, TTY_NORMAL, count); -- tty->flip.flag_buf_ptr[length] = buffer->error; -- -- length += count; -+ tty_insert_flip_string(tty, buffer->buffer, count); - info->recv_cnt -= count; -- DFLIP(DEBUG_LOG(info->line,"flip: %i\n", length)); - - if (count == buffer->length) { - info->first_recv_buffer = buffer->next; -@@ -2560,24 +2578,7 @@ - if (!info->first_recv_buffer) - info->last_recv_buffer = NULL; - -- tty->flip.count = length; -- DFLIP(if (tty->ldisc.chars_in_buffer(tty) > 3500) { -- DEBUG_LOG(info->line, "ldisc %lu\n", -- tty->ldisc.chars_in_buffer(tty)); -- DEBUG_LOG(info->line, "flip.count %lu\n", -- tty->flip.count); -- } -- ); -- restore_flags(flags); -- -- DFLIP( -- if (1) { -- DEBUG_LOG(info->line, "*** rxtot %i\n", info->icount.rx); -- DEBUG_LOG(info->line, "ldisc %lu\n", tty->ldisc.chars_in_buffer(tty)); -- DEBUG_LOG(info->line, "room %lu\n", tty->ldisc.receive_room(tty)); -- } -- -- ); -+ local_irq_restore(flags); - - /* this includes a check for low-latency */ - tty_flip_buffer_push(tty); -@@ -2722,21 +2723,7 @@ - printk("!NO TTY!\n"); - return info; - } -- if (tty->flip.count >= TTY_FLIPBUF_SIZE - TTY_THRESHOLD_THROTTLE) { -- /* check TTY_THROTTLED first so it indicates our state */ -- if (!test_and_set_bit(TTY_THROTTLED, &tty->flags)) { -- DFLOW(DEBUG_LOG(info->line, "rs_throttle flip.count: %i\n", tty->flip.count)); -- rs_throttle(tty); -- } -- } -- if (tty->flip.count >= TTY_FLIPBUF_SIZE) { -- DEBUG_LOG(info->line, "force FLIP! %i\n", tty->flip.count); -- tty->flip.work.func((void *) tty); -- if (tty->flip.count >= TTY_FLIPBUF_SIZE) { -- DEBUG_LOG(info->line, "FLIP FULL! %i\n", tty->flip.count); -- return info; /* if TTY_DONT_FLIP is set */ -- } -- } -+ - /* Read data and status at the same time */ - data_read = *((unsigned long *)&info->port[REG_DATA_STATUS32]); - more_data: -@@ -2789,27 +2776,25 @@ - DEBUG_LOG(info->line, "EBRK %i\n", info->break_detected_cnt); - info->errorcode = ERRCODE_INSERT_BREAK; - } else { -+ unsigned char data = IO_EXTRACT(R_SERIAL0_READ, data_in, data_read); -+ char flag = TTY_NORMAL; - if (info->errorcode == ERRCODE_INSERT_BREAK) { -- info->icount.brk++; -- *tty->flip.char_buf_ptr = 0; -- *tty->flip.flag_buf_ptr = TTY_BREAK; -- tty->flip.flag_buf_ptr++; -- tty->flip.char_buf_ptr++; -- tty->flip.count++; -+ struct tty_struct *tty = info->tty; -+ tty_insert_flip_char(tty, 0, flag); - info->icount.rx++; - } -- *tty->flip.char_buf_ptr = IO_EXTRACT(R_SERIAL0_READ, data_in, data_read); - - if (data_read & IO_MASK(R_SERIAL0_READ, par_err)) { - info->icount.parity++; -- *tty->flip.flag_buf_ptr = TTY_PARITY; -+ flag = TTY_PARITY; - } else if (data_read & IO_MASK(R_SERIAL0_READ, overrun)) { - info->icount.overrun++; -- *tty->flip.flag_buf_ptr = TTY_OVERRUN; -+ flag = TTY_OVERRUN; - } else if (data_read & IO_MASK(R_SERIAL0_READ, framing_err)) { - info->icount.frame++; -- *tty->flip.flag_buf_ptr = TTY_FRAME; -+ flag = TTY_FRAME; - } -+ tty_insert_flip_char(tty, data, flag); - info->errorcode = 0; - } - info->break_detected_cnt = 0; -@@ -2825,16 +2810,12 @@ - log_int(rdpc(), 0, 0); - } - ); -- *tty->flip.char_buf_ptr = IO_EXTRACT(R_SERIAL0_READ, data_in, data_read); -- *tty->flip.flag_buf_ptr = 0; -+ tty_insert_flip_char(tty, IO_EXTRACT(R_SERIAL0_READ, data_in, data_read), TTY_NORMAL); - } else { - DEBUG_LOG(info->line, "ser_rx int but no data_avail %08lX\n", data_read); - } - - -- tty->flip.flag_buf_ptr++; -- tty->flip.char_buf_ptr++; -- tty->flip.count++; - info->icount.rx++; - data_read = *((unsigned long *)&info->port[REG_DATA_STATUS32]); - if (data_read & IO_MASK(R_SERIAL0_READ, data_avail)) { -@@ -2972,7 +2953,7 @@ - if (info->x_char) { - unsigned char rstat; - DFLOW(DEBUG_LOG(info->line, "tx_int: xchar 0x%02X\n", info->x_char)); -- save_flags(flags); cli(); -+ local_irq_save(flags); - rstat = info->port[REG_STATUS]; - DFLOW(DEBUG_LOG(info->line, "stat %x\n", rstat)); - -@@ -2981,7 +2962,7 @@ - info->x_char = 0; - /* We must enable since it is disabled in ser_interrupt */ - e100_enable_serial_tx_ready_irq(info); -- restore_flags(flags); -+ local_irq_restore(flags); - return; - } - if (info->uses_dma_out) { -@@ -2989,7 +2970,7 @@ - int i; - /* We only use normal tx interrupt when sending x_char */ - DFLOW(DEBUG_LOG(info->line, "tx_int: xchar sent\n", 0)); -- save_flags(flags); cli(); -+ local_irq_save(flags); - rstat = info->port[REG_STATUS]; - DFLOW(DEBUG_LOG(info->line, "stat %x\n", rstat)); - e100_disable_serial_tx_ready_irq(info); -@@ -3002,7 +2983,7 @@ - nop(); - - *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, continue); -- restore_flags(flags); -+ local_irq_restore(flags); - return; - } - /* Normal char-by-char interrupt */ -@@ -3016,7 +2997,7 @@ - } - DINTR2(DEBUG_LOG(info->line, "tx_int %c\n", info->xmit.buf[info->xmit.tail])); - /* Send a byte, rs485 timing is critical so turn of ints */ -- save_flags(flags); cli(); -+ local_irq_save(flags); - info->port[REG_TR_DATA] = info->xmit.buf[info->xmit.tail]; - info->xmit.tail = (info->xmit.tail + 1) & (SERIAL_XMIT_SIZE-1); - info->icount.tx++; -@@ -3040,7 +3021,7 @@ - /* We must enable since it is disabled in ser_interrupt */ - e100_enable_serial_tx_ready_irq(info); - } -- restore_flags(flags); -+ local_irq_restore(flags); - - if (CIRC_CNT(info->xmit.head, - info->xmit.tail, -@@ -3065,7 +3046,7 @@ - int handled = 0; - static volatile unsigned long reentered_ready_mask = 0; - -- save_flags(flags); cli(); -+ local_irq_save(flags); - irq_mask1_rd = *R_IRQ_MASK1_RD; - /* First handle all rx interrupts with ints disabled */ - info = rs_table; -@@ -3110,7 +3091,7 @@ - /* Unblock the serial interrupt */ - *R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set); - -- sti(); -+ local_irq_enable(); - ready_mask = (1 << (8+1+2*0)); /* ser0 tr_ready */ - info = rs_table; - for (i = 0; i < NR_PORTS; i++) { -@@ -3123,11 +3104,11 @@ - ready_mask <<= 2; - } - /* handle_ser_tx_interrupt enables tr_ready interrupts */ -- cli(); -+ local_irq_disable(); - /* Handle reentered TX interrupt */ - irq_mask1_rd = reentered_ready_mask; - } -- cli(); -+ local_irq_disable(); - tx_started = 0; - } else { - unsigned long ready_mask; -@@ -3143,7 +3124,7 @@ - } - } - -- restore_flags(flags); -+ local_irq_restore(flags); - return IRQ_RETVAL(handled); - } /* ser_interrupt */ - #endif -@@ -3192,13 +3173,12 @@ - if (!xmit_page) - return -ENOMEM; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - - /* if it was already initialized, skip this */ - - if (info->flags & ASYNC_INITIALIZED) { -- restore_flags(flags); -+ local_irq_restore(flags); - free_page(xmit_page); - return 0; - } -@@ -3324,7 +3304,7 @@ - - info->flags |= ASYNC_INITIALIZED; - -- restore_flags(flags); -+ local_irq_restore(flags); - return 0; - } - -@@ -3375,8 +3355,7 @@ - info->irq); - #endif - -- save_flags(flags); -- cli(); /* Disable interrupts */ -+ local_irq_save(flags); - - if (info->xmit.buf) { - free_page((unsigned long)info->xmit.buf); -@@ -3400,7 +3379,7 @@ - set_bit(TTY_IO_ERROR, &info->tty->flags); - - info->flags &= ~ASYNC_INITIALIZED; -- restore_flags(flags); -+ local_irq_restore(flags); - } - - -@@ -3492,8 +3471,7 @@ - - #ifndef CONFIG_SVINTO_SIM - /* start with default settings and then fill in changes */ -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - /* 8 bit, no/even parity */ - info->rx_ctrl &= ~(IO_MASK(R_SERIAL0_REC_CTRL, rec_bitnr) | - IO_MASK(R_SERIAL0_REC_CTRL, rec_par_en) | -@@ -3557,7 +3535,7 @@ - } - - *((unsigned long *)&info->port[REG_XOFF]) = xoff; -- restore_flags(flags); -+ local_irq_restore(flags); - #endif /* !CONFIG_SVINTO_SIM */ - - update_char_time(info); -@@ -3585,13 +3563,12 @@ - - /* this protection might not exactly be necessary here */ - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - start_transmit(info); -- restore_flags(flags); -+ local_irq_restore(flags); - } - --static int rs_raw_write(struct tty_struct * tty, int from_user, -+static int rs_raw_write(struct tty_struct * tty, - const unsigned char *buf, int count) - { - int c, ret = 0; -@@ -3614,72 +3591,37 @@ - SIMCOUT(buf, count); - return count; - #endif -- save_flags(flags); -+ local_save_flags(flags); - DFLOW(DEBUG_LOG(info->line, "write count %i ", count)); - DFLOW(DEBUG_LOG(info->line, "ldisc %i\n", tty->ldisc.chars_in_buffer(tty))); - - -- /* the cli/restore_flags pairs below are needed because the -+ /* the local_irq_disable/restore_flags pairs below are needed because the - * DMA interrupt handler moves the info->xmit values. the memcpy - * needs to be in the critical region unfortunately, because we - * need to read xmit values, memcpy, write xmit values in one - * atomic operation... this could perhaps be avoided by more clever - * design. - */ -- if (from_user) { -- mutex_lock(&tmp_buf_mutex); -- while (1) { -- int c1; -- c = CIRC_SPACE_TO_END(info->xmit.head, -- info->xmit.tail, -- SERIAL_XMIT_SIZE); -- if (count < c) -- c = count; -- if (c <= 0) -- break; -- -- c -= copy_from_user(tmp_buf, buf, c); -- if (!c) { -- if (!ret) -- ret = -EFAULT; -- break; -- } -- cli(); -- c1 = CIRC_SPACE_TO_END(info->xmit.head, -- info->xmit.tail, -- SERIAL_XMIT_SIZE); -- if (c1 < c) -- c = c1; -- memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c); -- info->xmit.head = ((info->xmit.head + c) & -- (SERIAL_XMIT_SIZE-1)); -- restore_flags(flags); -- buf += c; -- count -= c; -- ret += c; -- } -- mutex_unlock(&tmp_buf_mutex); -- } else { -- cli(); -- while (count) { -- c = CIRC_SPACE_TO_END(info->xmit.head, -- info->xmit.tail, -- SERIAL_XMIT_SIZE); -- -- if (count < c) -- c = count; -- if (c <= 0) -- break; -- -- memcpy(info->xmit.buf + info->xmit.head, buf, c); -- info->xmit.head = (info->xmit.head + c) & -- (SERIAL_XMIT_SIZE-1); -- buf += c; -- count -= c; -- ret += c; -- } -- restore_flags(flags); -+ local_irq_disable(); -+ while (count) { -+ c = CIRC_SPACE_TO_END(info->xmit.head, -+ info->xmit.tail, -+ SERIAL_XMIT_SIZE); -+ -+ if (count < c) -+ c = count; -+ if (c <= 0) -+ break; -+ -+ memcpy(info->xmit.buf + info->xmit.head, buf, c); -+ info->xmit.head = (info->xmit.head + c) & -+ (SERIAL_XMIT_SIZE-1); -+ buf += c; -+ count -= c; -+ ret += c; - } -+ local_irq_restore(flags); - - /* enable transmitter if not running, unless the tty is stopped - * this does not need IRQ protection since if tr_running == 0 -@@ -3698,7 +3640,7 @@ - } /* raw_raw_write() */ - - static int --rs_write(struct tty_struct * tty, int from_user, -+rs_write(struct tty_struct * tty, - const unsigned char *buf, int count) - { - #if defined(CONFIG_ETRAX_RS485) -@@ -3725,7 +3667,7 @@ - } - #endif /* CONFIG_ETRAX_RS485 */ - -- count = rs_raw_write(tty, from_user, buf, count); -+ count = rs_raw_write(tty, buf, count); - - #if defined(CONFIG_ETRAX_RS485) - if (info->rs485.enabled) -@@ -3793,10 +3735,9 @@ - struct e100_serial *info = (struct e100_serial *)tty->driver_data; - unsigned long flags; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - info->xmit.head = info->xmit.tail = 0; -- restore_flags(flags); -+ local_irq_restore(flags); - - wake_up_interruptible(&tty->write_wait); - -@@ -3818,7 +3759,7 @@ - { - struct e100_serial *info = (struct e100_serial *)tty->driver_data; - unsigned long flags; -- save_flags(flags); cli(); -+ local_irq_save(flags); - if (info->uses_dma_out) { - /* Put the DMA on hold and disable the channel */ - *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, hold); -@@ -3835,7 +3776,7 @@ - DFLOW(DEBUG_LOG(info->line, "rs_send_xchar 0x%02X\n", ch)); - info->x_char = ch; - e100_enable_serial_tx_ready_irq(info); -- restore_flags(flags); -+ local_irq_restore(flags); - } - - /* -@@ -4085,61 +4026,6 @@ - return 0; - } - -- --static int --set_modem_info(struct e100_serial * info, unsigned int cmd, -- unsigned int *value) --{ -- unsigned int arg; -- -- if (copy_from_user(&arg, value, sizeof(int))) -- return -EFAULT; -- -- switch (cmd) { -- case TIOCMBIS: -- if (arg & TIOCM_RTS) { -- e100_rts(info, 1); -- } -- if (arg & TIOCM_DTR) { -- e100_dtr(info, 1); -- } -- /* Handle FEMALE behaviour */ -- if (arg & TIOCM_RI) { -- e100_ri_out(info, 1); -- } -- if (arg & TIOCM_CD) { -- e100_cd_out(info, 1); -- } -- break; -- case TIOCMBIC: -- if (arg & TIOCM_RTS) { -- e100_rts(info, 0); -- } -- if (arg & TIOCM_DTR) { -- e100_dtr(info, 0); -- } -- /* Handle FEMALE behaviour */ -- if (arg & TIOCM_RI) { -- e100_ri_out(info, 0); -- } -- if (arg & TIOCM_CD) { -- e100_cd_out(info, 0); -- } -- break; -- case TIOCMSET: -- e100_rts(info, arg & TIOCM_RTS); -- e100_dtr(info, arg & TIOCM_DTR); -- /* Handle FEMALE behaviour */ -- e100_ri_out(info, arg & TIOCM_RI); -- e100_cd_out(info, arg & TIOCM_CD); -- break; -- default: -- return -EINVAL; -- } -- return 0; --} -- -- - static void - rs_break(struct tty_struct *tty, int break_state) - { -@@ -4149,8 +4035,7 @@ - if (!info->port) - return; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - if (break_state == -1) { - /* Go to manual mode and set the txd pin to 0 */ - info->tx_ctrl &= 0x3F; /* Clear bit 7 (txd) and 6 (tr_enable) */ -@@ -4158,7 +4043,42 @@ - info->tx_ctrl |= (0x80 | 0x40); /* Set bit 7 (txd) and 6 (tr_enable) */ - } - info->port[REG_TR_CTRL] = info->tx_ctrl; -- restore_flags(flags); -+ local_irq_restore(flags); -+} -+ -+static int -+rs_tiocmset(struct tty_struct *tty, struct file * file, unsigned int set, unsigned int clear) -+{ -+ struct e100_serial * info = (struct e100_serial *)tty->driver_data; -+ -+ if (clear & TIOCM_RTS) { -+ e100_rts(info, 0); -+ } -+ if (clear & TIOCM_DTR) { -+ e100_dtr(info, 0); -+ } -+ /* Handle FEMALE behaviour */ -+ if (clear & TIOCM_RI) { -+ e100_ri_out(info, 0); -+ } -+ if (clear & TIOCM_CD) { -+ e100_cd_out(info, 0); -+ } -+ -+ if (set & TIOCM_RTS) { -+ e100_rts(info, 1); -+ } -+ if (set & TIOCM_DTR) { -+ e100_dtr(info, 1); -+ } -+ /* Handle FEMALE behaviour */ -+ if (set & TIOCM_RI) { -+ e100_ri_out(info, 1); -+ } -+ if (set & TIOCM_CD) { -+ e100_cd_out(info, 1); -+ } -+ return 0; - } - - static int -@@ -4177,10 +4097,6 @@ - switch (cmd) { - case TIOCMGET: - return get_modem_info(info, (unsigned int *) arg); -- case TIOCMBIS: -- case TIOCMBIC: -- case TIOCMSET: -- return set_modem_info(info, cmd, (unsigned int *) arg); - case TIOCGSERIAL: - return get_serial_info(info, - (struct serial_struct *) arg); -@@ -4212,7 +4128,7 @@ - if (copy_from_user(&rs485wr, (struct rs485_write*)arg, sizeof(rs485wr))) - return -EFAULT; - -- return e100_write_rs485(tty, 1, rs485wr.outc, rs485wr.outc_size); -+ return e100_write_rs485(tty, rs485wr.outc, rs485wr.outc_size); - } - #endif - -@@ -4242,46 +4158,6 @@ - - } - --/* In debugport.c - register a console write function that uses the normal -- * serial driver -- */ --typedef int (*debugport_write_function)(int i, const char *buf, unsigned int len); -- --extern debugport_write_function debug_write_function; -- --static int rs_debug_write_function(int i, const char *buf, unsigned int len) --{ -- int cnt; -- int written = 0; -- struct tty_struct *tty; -- static int recurse_cnt = 0; -- -- tty = rs_table[i].tty; -- if (tty) { -- unsigned long flags; -- if (recurse_cnt > 5) /* We skip this debug output */ -- return 1; -- -- local_irq_save(flags); -- recurse_cnt++; -- local_irq_restore(flags); -- do { -- cnt = rs_write(tty, 0, buf + written, len); -- if (cnt >= 0) { -- written += cnt; -- buf += cnt; -- len -= cnt; -- } else -- len = cnt; -- } while(len > 0); -- local_irq_save(flags); -- recurse_cnt--; -- local_irq_restore(flags); -- return 1; -- } -- return 0; --} -- - /* - * ------------------------------------------------------------ - * rs_close() -@@ -4303,11 +4179,10 @@ - - /* interrupts are disabled for this entire function */ - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - - if (tty_hung_up_p(filp)) { -- restore_flags(flags); -+ local_irq_restore(flags); - return; - } - -@@ -4334,7 +4209,7 @@ - info->count = 0; - } - if (info->count) { -- restore_flags(flags); -+ local_irq_restore(flags); - return; - } - info->flags |= ASYNC_CLOSING; -@@ -4388,7 +4263,7 @@ - } - info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&info->close_wait); -- restore_flags(flags); -+ local_irq_restore(flags); - - /* port closed */ - -@@ -4410,6 +4285,28 @@ - #endif - } - #endif -+ -+ /* -+ * Release any allocated DMA irq's. -+ */ -+ if (info->dma_in_enabled) { -+ cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description); -+ free_irq(info->dma_in_irq_nbr, -+ info); -+ info->uses_dma_in = 0; -+#ifdef SERIAL_DEBUG_OPEN -+ printk("DMA irq '%s' freed\n", info->dma_in_irq_description); -+#endif -+ } -+ if (info->dma_out_enabled) { -+ free_irq(info->dma_out_irq_nbr, -+ info); -+ cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description); -+ info->uses_dma_out = 0; -+#ifdef SERIAL_DEBUG_OPEN -+ printk("DMA irq '%s' freed\n", info->dma_out_irq_description); -+#endif -+ } - } - - /* -@@ -4485,7 +4382,7 @@ - if (tty_hung_up_p(filp) || - (info->flags & ASYNC_CLOSING)) { - if (info->flags & ASYNC_CLOSING) -- interruptible_sleep_on(&info->close_wait); -+ wait_event_interruptible(info->close_wait, 0); - #ifdef SERIAL_DO_RESTART - if (info->flags & ASYNC_HUP_NOTIFY) - return -EAGAIN; -@@ -4523,21 +4420,19 @@ - printk("block_til_ready before block: ttyS%d, count = %d\n", - info->line, info->count); - #endif -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - if (!tty_hung_up_p(filp)) { - extra_count++; - info->count--; - } -- restore_flags(flags); -+ local_irq_restore(flags); - info->blocked_open++; - while (1) { -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - /* assert RTS and DTR */ - e100_rts(info, 1); - e100_dtr(info, 1); -- restore_flags(flags); -+ local_irq_restore(flags); - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(info->flags & ASYNC_INITIALIZED)) { -@@ -4589,9 +4484,9 @@ - struct e100_serial *info; - int retval, line; - unsigned long page; -+ int allocated_resources = 0; - - /* find which port we want to open */ -- - line = tty->index; - - if (line < 0 || line >= NR_PORTS) -@@ -4632,7 +4527,7 @@ - if (tty_hung_up_p(filp) || - (info->flags & ASYNC_CLOSING)) { - if (info->flags & ASYNC_CLOSING) -- interruptible_sleep_on(&info->close_wait); -+ wait_event_interruptible(info->close_wait, 0); - #ifdef SERIAL_DO_RESTART - return ((info->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); -@@ -4642,12 +4537,79 @@ - } - - /* -+ * If DMA is enabled try to allocate the irq's. -+ */ -+ if (info->count == 1) { -+ allocated_resources = 1; -+ if (info->dma_in_enabled) { -+ if (request_irq(info->dma_in_irq_nbr, -+ rec_interrupt, -+ info->dma_in_irq_flags, -+ info->dma_in_irq_description, -+ info)) { -+ printk(KERN_WARNING "DMA irq '%s' busy; falling back to non-DMA mode\n", info->dma_in_irq_description); -+ /* Make sure we never try to use DMA in for the port again. */ -+ info->dma_in_enabled = 0; -+ } else if (cris_request_dma(info->dma_in_nbr, -+ info->dma_in_irq_description, -+ DMA_VERBOSE_ON_ERROR, -+ info->dma_owner)) { -+ free_irq(info->dma_in_irq_nbr, info); -+ printk(KERN_WARNING "DMA '%s' busy; falling back to non-DMA mode\n", info->dma_in_irq_description); -+ /* Make sure we never try to use DMA in for the port again. */ -+ info->dma_in_enabled = 0; -+ } -+#ifdef SERIAL_DEBUG_OPEN -+ else printk("DMA irq '%s' allocated\n", info->dma_in_irq_description); -+#endif -+ } -+ if (info->dma_out_enabled) { -+ if (request_irq(info->dma_out_irq_nbr, -+ tr_interrupt, -+ info->dma_out_irq_flags, -+ info->dma_out_irq_description, -+ info)) { -+ printk(KERN_WARNING "DMA irq '%s' busy; falling back to non-DMA mode\n", info->dma_out_irq_description); -+ /* Make sure we never try to use DMA out for the port again. */ -+ info->dma_out_enabled = 0; -+ } else if (cris_request_dma(info->dma_out_nbr, -+ info->dma_out_irq_description, -+ DMA_VERBOSE_ON_ERROR, -+ info->dma_owner)) { -+ free_irq(info->dma_out_irq_nbr, info); -+ printk(KERN_WARNING "DMA '%s' busy; falling back to non-DMA mode\n", info->dma_out_irq_description); -+ /* Make sure we never try to use DMA in for the port again. */ -+ info->dma_out_enabled = 0; -+ } -+#ifdef SERIAL_DEBUG_OPEN -+ else printk("DMA irq '%s' allocated\n", info->dma_out_irq_description); -+#endif -+ } -+ } -+ -+ /* - * Start up the serial port - */ - - retval = startup(info); -- if (retval) -- return retval; -+ if (retval) { -+ if (allocated_resources) { -+ if (info->dma_out_enabled) { -+ cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description); -+ free_irq(info->dma_out_irq_nbr, -+ info); -+ } -+ if (info->dma_in_enabled) { -+ cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description); -+ free_irq(info->dma_in_irq_nbr, -+ info); -+ } -+ } -+ /* FIXME Decrease count info->count here too? */ -+ return retval; -+ -+ } -+ - - retval = block_til_ready(tty, filp, info); - if (retval) { -@@ -4655,6 +4617,19 @@ - printk("rs_open returning after block_til_ready with %d\n", - retval); - #endif -+ if (allocated_resources) { -+ if (info->dma_out_enabled) { -+ cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description); -+ free_irq(info->dma_out_irq_nbr, -+ info); -+ } -+ if (info->dma_in_enabled) { -+ cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description); -+ free_irq(info->dma_in_irq_nbr, -+ info); -+ } -+ } -+ - return retval; - } - -@@ -4844,6 +4819,7 @@ - .send_xchar = rs_send_xchar, - .wait_until_sent = rs_wait_until_sent, - .read_proc = rs_read_proc, -+ .tiocmset = rs_tiocmset - }; - - static int __init -@@ -4863,7 +4839,22 @@ - #if !defined(CONFIG_ETRAX_SERIAL_FAST_TIMER) - init_timer(&flush_timer); - flush_timer.function = timed_flush_handler; -- mod_timer(&flush_timer, jiffies + CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS); -+ mod_timer(&flush_timer, jiffies + 5); -+#endif -+ -+#if defined(CONFIG_ETRAX_RS485) -+#if defined(CONFIG_ETRAX_RS485_ON_PA) -+ if (cris_io_interface_allocate_pins(if_ser0, 'a', rs485_pa_bit, rs485_pa_bit)) { -+ printk(KERN_CRIT "ETRAX100LX serial: Could not allocate RS485 pin\n"); -+ return -EBUSY; -+ } -+#endif -+#if defined(CONFIG_ETRAX_RS485_ON_PORT_G) -+ if (cris_io_interface_allocate_pins(if_ser0, 'g', rs485_pa_bit, rs485_port_g_bit)) { -+ printk(KERN_CRIT "ETRAX100LX serial: Could not allocate RS485 pin\n"); -+ return -EBUSY; -+ } -+#endif - #endif - - /* Initialize the tty_driver structure */ -@@ -4888,6 +4879,14 @@ - /* do some initializing for the separate ports */ - - for (i = 0, info = rs_table; i < NR_PORTS; i++,info++) { -+ if (info->enabled) { -+ if (cris_request_io_interface(info->io_if, info->io_if_description)) { -+ printk(KERN_CRIT "ETRAX100LX async serial: Could not allocate IO pins for %s, port %d\n", -+ info->io_if_description, -+ i); -+ info->enabled = 0; -+ } -+ } - info->uses_dma_in = 0; - info->uses_dma_out = 0; - info->line = i; -@@ -4939,64 +4938,16 @@ - #endif - - #ifndef CONFIG_SVINTO_SIM -+#ifndef CONFIG_ETRAX_KGDB - /* Not needed in simulator. May only complicate stuff. */ - /* hook the irq's for DMA channel 6 and 7, serial output and input, and some more... */ - -- if (request_irq(SERIAL_IRQ_NBR, ser_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial ", NULL)) -- panic("irq8"); -- --#ifdef CONFIG_ETRAX_SERIAL_PORT0 --#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT -- if (request_irq(SER0_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_DISABLED, "serial 0 dma tr", NULL)) -- panic("irq22"); --#endif --#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN -- if (request_irq(SER0_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_DISABLED, "serial 0 dma rec", NULL)) -- panic("irq23"); --#endif --#endif -- --#ifdef CONFIG_ETRAX_SERIAL_PORT1 --#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA8_OUT -- if (request_irq(SER1_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_DISABLED, "serial 1 dma tr", NULL)) -- panic("irq24"); --#endif --#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA9_IN -- if (request_irq(SER1_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_DISABLED, "serial 1 dma rec", NULL)) -- panic("irq25"); --#endif --#endif --#ifdef CONFIG_ETRAX_SERIAL_PORT2 -- /* DMA Shared with par0 (and SCSI0 and ATA) */ --#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT -- if (request_irq(SER2_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 2 dma tr", NULL)) -- panic("irq18"); --#endif --#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN -- if (request_irq(SER2_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 2 dma rec", NULL)) -- panic("irq19"); --#endif --#endif --#ifdef CONFIG_ETRAX_SERIAL_PORT3 -- /* DMA Shared with par1 (and SCSI1 and Extern DMA 0) */ --#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA4_OUT -- if (request_irq(SER3_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 3 dma tr", NULL)) -- panic("irq20"); --#endif --#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN -- if (request_irq(SER3_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 3 dma rec", NULL)) -- panic("irq21"); --#endif --#endif -+ if (request_irq(SERIAL_IRQ_NBR, ser_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial ", driver)) -+ panic("%s: Failed to request irq8", __FUNCTION__); - --#ifdef CONFIG_ETRAX_SERIAL_FLUSH_DMA_FAST -- if (request_irq(TIMER1_IRQ_NBR, timeout_interrupt, IRQF_SHARED | IRQF_DISABLED, -- "fast serial dma timeout", NULL)) { -- printk(KERN_CRIT "err: timer1 irq\n"); -- } - #endif - #endif /* CONFIG_SVINTO_SIM */ -- debug_write_function = rs_debug_write_function; -+ - return 0; - } - ---- linux-2.6.19.2.orig/drivers/serial/crisv10.h 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/serial/crisv10.h 2006-10-13 14:44:38.000000000 +0200 -@@ -9,6 +9,8 @@ - - #include <linux/circ_buf.h> - #include <asm/termios.h> -+#include <asm/dma.h> -+#include <asm/arch/io_interface_mux.h> - - /* Software state per channel */ - -@@ -61,6 +63,19 @@ - u8 dma_in_enabled:1; /* Set to 1 if DMA should be used */ - - /* end of fields defined in rs_table[] in .c-file */ -+ int dma_owner; -+ unsigned int dma_in_nbr; -+ unsigned int dma_out_nbr; -+ unsigned int dma_in_irq_nbr; -+ unsigned int dma_out_irq_nbr; -+ unsigned long dma_in_irq_flags; -+ unsigned long dma_out_irq_flags; -+ char *dma_in_irq_description; -+ char *dma_out_irq_description; -+ -+ enum cris_io_interface io_if; -+ char *io_if_description; -+ - u8 uses_dma_in; /* Set to 1 if DMA is used */ - u8 uses_dma_out; /* Set to 1 if DMA is used */ - u8 forced_eop; /* a fifo eop has been forced */ ---- linux-2.6.19.2.orig/drivers/serial/crisv32.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/serial/crisv32.c 2007-01-05 09:59:53.000000000 +0100 -@@ -0,0 +1,2333 @@ -+/* $Id: crisv32.c,v 1.78 2007/01/05 08:59:53 starvik Exp $ -+ * -+ * Serial port driver for the ETRAX FS chip -+ * -+ * Copyright (C) 1998-2006 Axis Communications AB -+ * -+ * Many, many authors. Based once upon a time on serial.c for 16x50. -+ * -+ * Johan Adolfsson - port to ETRAX FS -+ * Mikael Starvik - port to serial_core framework -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/console.h> -+#include <linux/types.h> -+#include <linux/errno.h> -+#include <linux/serial_core.h> -+ -+#include <asm/io.h> -+#include <asm/irq.h> -+#include <asm/system.h> -+#include <asm/uaccess.h> -+ -+#include <asm/arch/dma.h> -+#include <asm/arch/system.h> -+#include <asm/arch/pinmux.h> -+#include <asm/arch/hwregs/dma.h> -+#include <asm/arch/hwregs/reg_rdwr.h> -+#include <asm/arch/hwregs/ser_defs.h> -+#include <asm/arch/hwregs/dma_defs.h> -+#include <asm/arch/hwregs/gio_defs.h> -+#include <asm/arch/hwregs/intr_vect_defs.h> -+#include <asm/arch/hwregs/reg_map.h> -+ -+#define UART_NR 5 /* 4 ports + dummy port */ -+#define SERIAL_RECV_DESCRIPTORS 8 -+ -+/* We only buffer 255 characters here, no need for more tx descriptors. */ -+#define SERIAL_TX_DESCRIPTORS 4 -+ -+/* Kept for experimental purposes. */ -+#define ETRAX_SER_FIFO_SIZE 1 -+#define SERIAL_DESCR_BUF_SIZE 256 -+#define regi_NULL 0 -+#define DMA_WAIT_UNTIL_RESET(inst) \ -+ do { \ -+ reg_dma_rw_stat r; \ -+ do { \ -+ r = REG_RD(dma, (inst), rw_stat); \ -+ } while (r.mode != regk_dma_rst); \ -+ } while (0) -+ -+/* Macro to set up control lines for a port. */ -+#define SETUP_PINS(port) \ -+ if (serial_cris_ports[port].used) { \ -+ if (strcmp(CONFIG_ETRAX_SER##port##_DTR_BIT, "")) \ -+ crisv32_io_get_name(&serial_cris_ports[port].dtr_pin, \ -+ CONFIG_ETRAX_SER##port##_DTR_BIT); \ -+ else \ -+ serial_cris_ports[port].dtr_pin = dummy_pin; \ -+ if (strcmp(CONFIG_ETRAX_SER##port##_DSR_BIT, "")) \ -+ crisv32_io_get_name(&serial_cris_ports[port].dsr_pin, \ -+ CONFIG_ETRAX_SER##port##_DSR_BIT); \ -+ else \ -+ serial_cris_ports[port].dsr_pin = dummy_pin; \ -+ if (strcmp(CONFIG_ETRAX_SER##port##_RI_BIT, "")) \ -+ crisv32_io_get_name(&serial_cris_ports[port].ri_pin, \ -+ CONFIG_ETRAX_SER##port##_RI_BIT); \ -+ else \ -+ serial_cris_ports[port].ri_pin = dummy_pin; \ -+ if (strcmp(CONFIG_ETRAX_SER##port##_CD_BIT, "")) \ -+ crisv32_io_get_name(&serial_cris_ports[port].cd_pin, \ -+ CONFIG_ETRAX_SER##port##_CD_BIT); \ -+ else \ -+ serial_cris_ports[port].cd_pin = dummy_pin; \ -+ } -+ -+/* Set a serial port register if anything has changed. */ -+#define MODIFY_REG(instance, reg, var) \ -+ if (REG_RD_INT(ser, instance, reg) \ -+ != REG_TYPE_CONV(int, reg_ser_##reg, var)) \ -+ REG_WR(ser, instance, reg, var); -+ -+/* -+ * Regarding RS485 operation in crisv32 serial driver. -+ * --------------------------------------------------- -+ * RS485 can be run in two modes, full duplex using four wires (485FD) and -+ * half duplex using two wires (485HD). The default mode of each serial port -+ * is configured in the kernel configuration. The available modes are: -+ * RS-232, RS-485 half duplex, and RS-485 full duplex. -+ * -+ * In the 485HD mode the direction of the data bus must be able to switch. -+ * The direction of the transceiver is controlled by the RTS signal. Hence -+ * the auto_rts function in the ETRAX FS chip is enabled in this mode, which -+ * automatically toggle RTS when transmitting. The initial direction of the -+ * port is receiving. -+ * -+ * In the 485FD mode two transceivers will be used, one in each direction. -+ * Usually the hardware can handle both 485HD and 485FD, which implies that -+ * one of the transceivers can change direction. Consequently that transceiver -+ * must be tied to operate in the opposite direction of the other one, setting -+ * and keeping RTS to a fixed value do this. -+ * -+ * There are two special "ioctl" that can configure the ports. These two are -+ * left for backward compatible with older applications. The effects of using -+ * them are described below: -+ * The TIOCSERSETRS485: -+ * This ioctl sets a serial port in 232 mode to 485HD mode or vise versa. The -+ * state of the port is kept when closing the port. Note that this ioctl has no -+ * effect on a serial port in the 485FD mode. -+ * The TIOCSERWRRS485: -+ * This ioctl set a serial port in 232 mode to 485HD mode and writes the data -+ * "included" in the ioctl to the port. The port will then stay in 485HD mode. -+ * Using this ioctl on a serial port in the 485HD mode will transmit the data -+ * without changing the mode. Using this ioctl on a serial port in 485FD mode -+ * will not change the mode and simply send the data using the 485FD mode. -+ */ -+ -+#define TYPE_232 0 -+#define TYPE_485HD 1 -+#define TYPE_485FD 2 -+ -+struct etrax_recv_buffer { -+ struct etrax_recv_buffer *next; -+ unsigned short length; -+ unsigned char error; -+ unsigned char pad; -+ -+ unsigned char buffer[0]; -+}; -+ -+struct uart_cris_port { -+ struct uart_port port; -+ -+ int initialized; -+ int used; -+ int irq; -+ -+ /* Used to check if port enabled as well by testing for zero. */ -+ reg_scope_instances regi_ser; -+ reg_scope_instances regi_dmain; -+ reg_scope_instances regi_dmaout; -+ -+ struct crisv32_iopin dtr_pin; -+ struct crisv32_iopin dsr_pin; -+ struct crisv32_iopin ri_pin; -+ struct crisv32_iopin cd_pin; -+ -+ struct dma_descr_context tr_context_descr -+ __attribute__ ((__aligned__(32))); -+ struct dma_descr_data tr_descr[SERIAL_TX_DESCRIPTORS] -+ __attribute__ ((__aligned__(32))); -+ struct dma_descr_context rec_context_descr -+ __attribute__ ((__aligned__(32))); -+ struct dma_descr_data rec_descr[SERIAL_RECV_DESCRIPTORS] -+ __attribute__ ((__aligned__(32))); -+ -+ /* This is the first one in the list the HW is working on now. */ -+ struct dma_descr_data* first_tx_descr; -+ -+ /* This is the last one in the list the HW is working on now. */ -+ struct dma_descr_data* last_tx_descr; -+ -+ /* This is how many characters the HW is working on now. */ -+ unsigned int tx_pending_chars; -+ -+ int tx_started; -+ unsigned int cur_rec_descr; -+ struct etrax_recv_buffer *first_recv_buffer; -+ struct etrax_recv_buffer *last_recv_buffer; -+ -+ unsigned int recv_cnt; -+ unsigned int max_recv_cnt; -+ -+ /* The time for 1 char, in usecs. */ -+ unsigned long char_time_usec; -+ -+ /* Last tx usec in the jiffies. */ -+ unsigned long last_tx_active_usec; -+ -+ /* Last tx time in jiffies. */ -+ unsigned long last_tx_active; -+ -+ /* Last rx usec in the jiffies. */ -+ unsigned long last_rx_active_usec; -+ -+ /* Last rx time in jiffies. */ -+ unsigned long last_rx_active; -+ -+#ifdef CONFIG_ETRAX_RS485 -+ /* RS-485 support, duh. */ -+ struct rs485_control rs485; -+#endif -+ int port_type; -+}; -+ -+extern struct uart_driver serial_cris_driver; -+static struct uart_port *console_port; -+static int console_baud = 115200; -+static struct uart_cris_port serial_cris_ports[UART_NR] = { -+{ -+#ifdef CONFIG_ETRAX_SERIAL_PORT0 -+ .used = 1, -+ .irq = SER0_INTR_VECT, -+ .regi_ser = regi_ser0, -+ /* -+ * We initialize the dma stuff like this to get a compiler error -+ * if a CONFIG is missing -+ */ -+ .regi_dmain = -+# ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN -+ regi_dma7, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT0_NO_DMA_IN -+ regi_NULL, -+# endif -+ -+ .regi_dmaout = -+# ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT -+ regi_dma6, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT0_NO_DMA_OUT -+ regi_NULL, -+# endif -+ -+# ifdef CONFIG_ETRAX_RS485 -+# ifdef CONFIG_ETRAX_SERIAL_PORT0_TYPE_485HD -+ .port_type = TYPE_485HD, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT0_TYPE_485FD -+ .port_type = TYPE_485FD, -+# endif -+# endif -+#else -+ .regi_ser = regi_NULL, -+ .regi_dmain = regi_NULL, -+ .regi_dmaout = regi_NULL, -+#endif -+}, /* ttyS0 */ -+{ -+#ifdef CONFIG_ETRAX_SERIAL_PORT1 -+ .used = 1, -+ .irq = SER1_INTR_VECT, -+ .regi_ser = regi_ser1, -+ .regi_dmain = -+# ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA5_IN -+ regi_dma5, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT1_NO_DMA_IN -+ regi_NULL, -+# endif -+ -+ .regi_dmaout = -+# ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA4_OUT -+ regi_dma4, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT1_NO_DMA_OUT -+ regi_NULL, -+# endif -+ -+# ifdef CONFIG_ETRAX_RS485 -+# ifdef CONFIG_ETRAX_SERIAL_PORT1_TYPE_485HD -+ .port_type = TYPE_485HD, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT1_TYPE_485FD -+ .port_type = TYPE_485FD, -+# endif -+# endif -+#else -+ .regi_ser = regi_NULL, -+ .regi_dmain = regi_NULL, -+ .regi_dmaout = regi_NULL, -+#endif -+}, /* ttyS1 */ -+{ -+#ifdef CONFIG_ETRAX_SERIAL_PORT2 -+ .used = 1, -+ .irq = SER2_INTR_VECT, -+ .regi_ser = regi_ser2, -+ .regi_dmain = -+# ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN -+ regi_dma3, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_IN -+ regi_NULL, -+# endif -+ -+ .regi_dmaout = -+# ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT -+ regi_dma2, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_OUT -+ regi_NULL, -+# endif -+ -+# ifdef CONFIG_ETRAX_RS485 -+# ifdef CONFIG_ETRAX_SERIAL_PORT2_TYPE_485HD -+ .port_type = TYPE_485HD, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT2_TYPE_485FD -+ .port_type = TYPE_485FD, -+# endif -+# endif -+#else -+ .regi_ser = regi_NULL, -+ .regi_dmain = regi_NULL, -+ .regi_dmaout = regi_NULL, -+#endif -+}, /* ttyS2 */ -+{ -+#ifdef CONFIG_ETRAX_SERIAL_PORT3 -+ .used = 1, -+ .irq = SER3_INTR_VECT, -+ .regi_ser = regi_ser3, -+ .regi_dmain = -+# ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN -+ regi_dma9, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT3_NO_DMA_IN -+ regi_NULL, -+# endif -+ -+ .regi_dmaout = -+# ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT -+ regi_dma8, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT3_NO_DMA_OUT -+ regi_NULL, -+# endif -+ -+# ifdef CONFIG_ETRAX_RS485 -+# ifdef CONFIG_ETRAX_SERIAL_PORT3_TYPE_485HD -+ .port_type = TYPE_485HD, -+# endif -+# ifdef CONFIG_ETRAX_SERIAL_PORT3_TYPE_485FD -+ .port_type = TYPE_485FD, -+# endif -+# endif -+#else -+ .regi_ser = regi_NULL, -+ .regi_dmain = regi_NULL, -+ .regi_dmaout = regi_NULL, -+#endif -+}, /* ttyS3 */ -+{ -+#ifdef CONFIG_ETRAX_DEBUG_PORT_NULL -+ .used = 1, -+#endif -+ .regi_ser = regi_NULL -+} /* Dummy console port */ -+ -+}; -+ -+/* Dummy pin used for unused CD, DSR, DTR and RI signals. */ -+static unsigned long io_dummy; -+static struct crisv32_ioport dummy_port = -+{ -+ &io_dummy, -+ &io_dummy, -+ &io_dummy, -+ 18 -+}; -+static struct crisv32_iopin dummy_pin = -+{ -+ &dummy_port, -+ 0 -+}; -+ -+static int selected_console = -+#if defined(CONFIG_ETRAX_DEBUG_PORT0) -+0; -+#elif defined(CONFIG_ETRAX_DEBUG_PORT1) -+1; -+#elif defined(CONFIG_ETRAX_DEBUG_PORT2) -+2; -+#elif defined(CONFIG_ETRAX_DEBUG_PORT3) -+3; -+#else /* CONFIG_ETRAX_DEBUG_PORT_NULL */ -+4; -+#endif -+ -+extern void reset_watchdog(void); -+ -+/* -+ * Interrupts are disabled on entering -+ */ -+static void -+cris_console_write(struct console *co, const char *s, unsigned int count) -+{ -+ struct uart_cris_port *up; -+ int i; -+ reg_ser_r_stat_din stat; -+ reg_ser_rw_tr_dma_en tr_dma_en, old; -+ -+ up = &serial_cris_ports[selected_console]; -+ -+ /* -+ * This function isn't covered by the struct uart_ops, so we -+ * have to check manually that the port really is there, -+ * configured and live. -+ */ -+ if (!up->regi_ser) -+ return; -+ -+ /* Switch to manual mode. */ -+ tr_dma_en = old = REG_RD (ser, up->regi_ser, rw_tr_dma_en); -+ if (tr_dma_en.en == regk_ser_yes) { -+ tr_dma_en.en = regk_ser_no; -+ REG_WR(ser, up->regi_ser, rw_tr_dma_en, tr_dma_en); -+ } -+ -+ /* Send data. */ -+ for (i = 0; i < count; i++) { -+ /* LF -> CRLF */ -+ if (s[i] == '\n') { -+ do { -+ stat = REG_RD (ser, up->regi_ser, r_stat_din); -+ } while (!stat.tr_rdy); -+ REG_WR_INT (ser, up->regi_ser, rw_dout, '\r'); -+ } -+ /* Wait until transmitter is ready and send. */ -+ do { -+ stat = REG_RD (ser, up->regi_ser, r_stat_din); -+ } while (!stat.tr_rdy); -+ REG_WR_INT (ser, up->regi_ser, rw_dout, s[i]); -+ -+ /* Feed watchdog, because this may take looong time. */ -+ reset_watchdog(); -+ } -+ -+ /* Restore mode. */ -+ if (tr_dma_en.en != old.en) -+ REG_WR(ser, up->regi_ser, rw_tr_dma_en, old); -+} -+ -+static void cris_serial_port_init(struct uart_port *port, int line); -+static int __init -+cris_console_setup(struct console *co, char *options) -+{ -+ struct uart_port *port; -+ int baud = 115200; -+ int bits = 8; -+ int parity = 'n'; -+ int flow = 'n'; -+ -+ if (co->index >= UART_NR) -+ co->index = 0; -+ if (options) -+ selected_console = co->index; -+ port = &serial_cris_ports[selected_console].port; -+ console_port = port; -+ -+ if (options) -+ uart_parse_options(options, &baud, &parity, &bits, &flow); -+ console_baud = baud; -+ cris_serial_port_init(port, selected_console); -+ co->index = port->line; -+ uart_set_options(port, co, baud, parity, bits, flow); -+ -+ return 0; -+} -+ -+static struct tty_driver* -+cris_console_device(struct console* co, int *index) -+{ -+ struct uart_driver *p = co->data; -+ *index = selected_console; -+ return p->tty_driver; -+} -+ -+static struct console cris_console = { -+ .name = "ttyS", -+ .write = cris_console_write, -+ .device = cris_console_device, -+ .setup = cris_console_setup, -+ .flags = CON_PRINTBUFFER, -+ .index = -1, -+ .data = &serial_cris_driver, -+}; -+ -+#define SERIAL_CRIS_CONSOLE &cris_console -+ -+struct uart_driver serial_cris_driver = { -+ .owner = THIS_MODULE, -+ .driver_name = "serial", -+ .dev_name = "ttyS", -+ .major = TTY_MAJOR, -+ .minor = 64, -+ .nr = UART_NR, -+ .cons = SERIAL_CRIS_CONSOLE, -+}; -+ -+static int inline crisv32_serial_get_rts(struct uart_cris_port *up) -+{ -+ reg_scope_instances regi_ser = up->regi_ser; -+ /* -+ * Return what the user has controlled rts to or -+ * what the pin is? (if auto_rts is used it differs during tx) -+ */ -+ reg_ser_r_stat_din rstat = REG_RD(ser, regi_ser, r_stat_din); -+ return !(rstat.rts_n == regk_ser_active); -+} -+ -+/* -+ * A set = 0 means 3.3V on the pin, bitvalue: 0=active, 1=inactive -+ * 0=0V , 1=3.3V -+ */ -+static inline void crisv32_serial_set_rts(struct uart_cris_port *up, int set) -+{ -+ reg_scope_instances regi_ser = up->regi_ser; -+ -+#ifdef CONFIG_ETRAX_RS485 -+ /* Never toggle RTS if port is in 485 mode. If port is in 485FD mode we -+ * do not want to send with the reciever and for 485HD mode auto_rts -+ * take care of the RTS for us. -+ */ -+ if (!up->rs485.enabled) { -+#else -+ { -+#endif -+ unsigned long flags; -+ reg_ser_rw_rec_ctrl rec_ctrl; -+ -+ local_irq_save(flags); -+ rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl); -+ if (set) -+ rec_ctrl.rts_n = regk_ser_active; -+ else -+ rec_ctrl.rts_n = regk_ser_inactive; -+ REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl); -+ local_irq_restore(flags); -+ } -+} -+ -+/* Input */ -+static int inline crisv32_serial_get_cts(struct uart_cris_port *up) -+{ -+ reg_scope_instances regi_ser = up->regi_ser; -+ reg_ser_r_stat_din rstat = REG_RD(ser, regi_ser, r_stat_din); -+ return (rstat.cts_n == regk_ser_active); -+} -+ -+/* -+ * Send a single character for XON/XOFF purposes. We do it in this separate -+ * function instead of the alternative support port.x_char, in the ...start_tx -+ * function, so we don't mix up this case with possibly enabling transmission -+ * of queued-up data (in case that's disabled after *receiving* an XOFF or -+ * negative CTS). This function is used for both DMA and non-DMA case; see HW -+ * docs specifically blessing sending characters manually when DMA for -+ * transmission is enabled and running. We may be asked to transmit despite -+ * the transmitter being disabled by a ..._stop_tx call so we need to enable -+ * it temporarily but restore the state afterwards. -+ * -+ * Beware: I'm not sure how the RS-485 stuff is supposed to work. Using -+ * XON/XOFF seems problematic if there are several controllers, but if it's -+ * actually RS-422 (multi-drop; one sender and multiple receivers), it might -+ * Just Work, so don't bail out just because it looks a little suspicious. -+ */ -+ -+void serial_cris_send_xchar(struct uart_port *port, char ch) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ reg_ser_rw_dout dout = { .data = ch }; -+ reg_ser_rw_ack_intr ack_intr = { .tr_rdy = regk_ser_yes }; -+ reg_ser_r_stat_din rstat; -+ reg_ser_rw_tr_ctrl prev_tr_ctrl, tr_ctrl; -+ reg_scope_instances regi_ser = up->regi_ser; -+ unsigned long flags; -+ -+ /* -+ * Wait for tr_rdy in case a character is already being output. Make -+ * sure we have integrity between the register reads and the writes -+ * below, but don't busy-wait with interrupts off and the port lock -+ * taken. -+ */ -+ spin_lock_irqsave(&port->lock, flags); -+ do { -+ spin_unlock_irqrestore(&port->lock, flags); -+ spin_lock_irqsave(&port->lock, flags); -+ prev_tr_ctrl = tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl); -+ rstat = REG_RD(ser, regi_ser, r_stat_din); -+ } while (!rstat.tr_rdy); -+ -+ /* -+ * Ack an interrupt if one was just issued for the previous character -+ * that was output. This is required for non-DMA as the interrupt is -+ * used as the only indicator that the transmitter is ready and it -+ * isn't while this x_char is being transmitted. -+ */ -+ REG_WR(ser, regi_ser, rw_ack_intr, ack_intr); -+ -+ /* Enable the transmitter in case it was disabled. */ -+ tr_ctrl.stop = 0; -+ REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl); -+ -+ /* -+ * Finally, send the blessed character; nothing should stop it now, -+ * except for an xoff-detected state, which we'll handle below. -+ */ -+ REG_WR(ser, regi_ser, rw_dout, dout); -+ up->port.icount.tx++; -+ -+ /* There might be an xoff state to clear. */ -+ rstat = REG_RD(ser, up->regi_ser, r_stat_din); -+ -+ /* -+ * Clear any xoff state that *may* have been there to -+ * inhibit transmission of the character. -+ */ -+ if (rstat.xoff_detect) { -+ reg_ser_rw_xoff_clr xoff_clr = { .clr = 1 }; -+ REG_WR(ser, regi_ser, rw_xoff_clr, xoff_clr); -+ reg_ser_rw_tr_dma_en tr_dma_en -+ = REG_RD(ser, regi_ser, rw_tr_dma_en); -+ -+ /* -+ * If we had an xoff state but cleared it, instead sneak in a -+ * disabled state for the transmitter, after the character we -+ * sent. Thus we keep the port disabled, just as if the xoff -+ * state was still in effect (or actually, as if stop_tx had -+ * been called, as we stop DMA too). -+ */ -+ prev_tr_ctrl.stop = 1; -+ -+ tr_dma_en.en = 0; -+ REG_WR(ser, regi_ser, rw_tr_dma_en, tr_dma_en); -+ } -+ -+ /* Restore "previous" enabled/disabled state of the transmitter. */ -+ REG_WR(ser, regi_ser, rw_tr_ctrl, prev_tr_ctrl); -+ -+ spin_unlock_irqrestore(&port->lock, flags); -+} -+ -+static void transmit_chars_dma(struct uart_cris_port *up); -+ -+/* -+ * Do not spin_lock_irqsave or disable interrupts by other means here; it's -+ * already done by the caller. -+ */ -+ -+static void serial_cris_start_tx(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ reg_scope_instances regi_ser = up->regi_ser; -+ reg_ser_rw_tr_ctrl tr_ctrl; -+ -+ tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl); -+ tr_ctrl.stop = regk_ser_no; -+ REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl); -+ if (!up->regi_dmaout) { -+ reg_ser_rw_intr_mask intr_mask = -+ REG_RD(ser, regi_ser, rw_intr_mask); -+ intr_mask.tr_rdy = regk_ser_yes; -+ REG_WR(ser, regi_ser, rw_intr_mask, intr_mask); -+ } else { -+ /* -+ * We're called possibly to re-enable transmission after it -+ * has been disabled. If so, DMA needs to be re-enabled. -+ */ -+ reg_ser_rw_tr_dma_en tr_dma_en = { .en = 1 }; -+ REG_WR(ser, regi_ser, rw_tr_dma_en, tr_dma_en); -+ transmit_chars_dma(up); -+ } -+} -+ -+/* -+ * This function handles both the DMA and non-DMA case by ordering the -+ * transmitter to stop of after the current character. We don't need to wait -+ * for any such character to be completely transmitted; we do that where it -+ * matters, like in serial_cris_set_termios. Don't busy-wait here; see -+ * Documentation/serial/driver: this function is called within -+ * spin_lock_irq{,save} and thus separate ones would be disastrous (when SMP). -+ * There's no documented need to set the txd pin to any particular value; -+ * break setting is controlled solely by serial_cris_break_ctl. -+ */ -+ -+static void serial_cris_stop_tx(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ reg_scope_instances regi_ser = up->regi_ser; -+ reg_ser_rw_tr_ctrl tr_ctrl; -+ reg_ser_rw_intr_mask intr_mask; -+ reg_ser_rw_tr_dma_en tr_dma_en = {0}; -+ reg_ser_rw_xoff_clr xoff_clr = {0}; -+ -+ /* -+ * For the non-DMA case, we'd get a tr_rdy interrupt that we're not -+ * interested in as we're not transmitting any characters. For the -+ * DMA case, that interrupt is already turned off, but no reason to -+ * waste code on conditionals here. -+ */ -+ intr_mask = REG_RD(ser, regi_ser, rw_intr_mask); -+ intr_mask.tr_rdy = regk_ser_no; -+ REG_WR(ser, regi_ser, rw_intr_mask, intr_mask); -+ -+ tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl); -+ tr_ctrl.stop = 1; -+ REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl); -+ -+ /* -+ * Always clear possible hardware xoff-detected state here, no need to -+ * unnecessary consider mctrl settings and when they change. We clear -+ * it here rather than in start_tx: both functions are called as the -+ * effect of XOFF processing, but start_tx is also called when upper -+ * levels tell the driver that there are more characters to send, so -+ * avoid adding code there. -+ */ -+ xoff_clr.clr = 1; -+ REG_WR(ser, regi_ser, rw_xoff_clr, xoff_clr); -+ -+ /* -+ * Disable transmitter DMA, so that if we're in XON/XOFF, we can send -+ * those single characters without also giving go-ahead for queued up -+ * DMA data. -+ */ -+ tr_dma_en.en = 0; -+ REG_WR(ser, regi_ser, rw_tr_dma_en, tr_dma_en); -+} -+ -+static void serial_cris_stop_rx(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ reg_scope_instances regi_ser = up->regi_ser; -+ reg_ser_rw_rec_ctrl rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl); -+ -+ rec_ctrl.en = regk_ser_no; -+ REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl); -+} -+ -+static void serial_cris_enable_ms(struct uart_port *port) -+{ -+} -+ -+static void check_modem_status(struct uart_cris_port *up) -+{ -+} -+ -+static unsigned int serial_cris_tx_empty(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ unsigned long flags; -+ unsigned int ret; -+ reg_ser_r_stat_din rstat = {0}; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ if (up->regi_dmaout) { -+ /* -+ * For DMA, before looking at r_stat, we need to check that we -+ * either haven't actually started or that end-of-list is -+ * reached, else a tr_empty indication is just an internal -+ * state. The caller qualifies, if needed, that the -+ * port->info.xmit buffer is empty, so we don't need to -+ * check that. -+ */ -+ reg_dma_rw_stat status = REG_RD(dma, up->regi_dmaout, rw_stat); -+ -+ if (!up->tx_started) { -+ ret = 1; -+ goto done; -+ } -+ -+ if (status.list_state != regk_dma_data_at_eol) { -+ ret = 0; -+ goto done; -+ } -+ } -+ -+ rstat = REG_RD(ser, up->regi_ser, r_stat_din); -+ ret = rstat.tr_empty ? TIOCSER_TEMT : 0; -+ -+ done: -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ return ret; -+} -+static unsigned int serial_cris_get_mctrl(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ unsigned int ret; -+ -+ ret = 0; -+ if (crisv32_serial_get_rts(up)) -+ ret |= TIOCM_RTS; -+ if (crisv32_io_rd(&up->dtr_pin)) -+ ret |= TIOCM_DTR; -+ if (crisv32_io_rd(&up->cd_pin)) -+ ret |= TIOCM_CD; -+ if (crisv32_io_rd(&up->ri_pin)) -+ ret |= TIOCM_RI; -+ if (!crisv32_io_rd(&up->dsr_pin)) -+ ret |= TIOCM_DSR; -+ if (crisv32_serial_get_cts(up)) -+ ret |= TIOCM_CTS; -+ return ret; -+} -+ -+static void serial_cris_set_mctrl(struct uart_port *port, unsigned int mctrl) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ -+ crisv32_serial_set_rts(up, mctrl & TIOCM_RTS ? 1 : 0); -+ crisv32_io_set(&up->dtr_pin, mctrl & TIOCM_DTR ? 1 : 0); -+ crisv32_io_set(&up->ri_pin, mctrl & TIOCM_RNG ? 1 : 0); -+ crisv32_io_set(&up->cd_pin, mctrl & TIOCM_CD ? 1 : 0); -+} -+ -+static void serial_cris_break_ctl(struct uart_port *port, int break_state) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ unsigned long flags; -+ reg_ser_rw_tr_ctrl tr_ctrl; -+ reg_ser_rw_tr_dma_en tr_dma_en; -+ reg_ser_rw_intr_mask intr_mask; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ tr_ctrl = REG_RD(ser, up->regi_ser, rw_tr_ctrl); -+ tr_dma_en = REG_RD(ser, up->regi_ser, rw_tr_dma_en); -+ intr_mask = REG_RD(ser, up->regi_ser, rw_intr_mask); -+ -+ if (break_state != 0) { /* Send break */ -+ /* -+ * We need to disable DMA (if used) or tr_rdy interrupts if no -+ * DMA. No need to make this conditional on use of DMA; -+ * disabling will be a no-op for the other mode. -+ */ -+ intr_mask.tr_rdy = regk_ser_no; -+ tr_dma_en.en = 0; -+ -+ /* -+ * Stop transmission and set the txd pin to 0 after the -+ * current character. The txd setting will take effect after -+ * any current transmission has completed. -+ */ -+ tr_ctrl.stop = 1; -+ tr_ctrl.txd = 0; -+ } else { -+ /* Re-enable either transmit DMA or the serial interrupt. */ -+ if (up->regi_dmaout) -+ tr_dma_en.en = 1; -+ else -+ intr_mask.tr_rdy = regk_ser_yes; -+ -+ -+ tr_ctrl.stop = 0; -+ tr_ctrl.txd = 1; -+ } -+ REG_WR(ser, up->regi_ser, rw_tr_ctrl, tr_ctrl); -+ REG_WR(ser, up->regi_ser, rw_tr_dma_en, tr_dma_en); -+ REG_WR(ser, up->regi_ser, rw_intr_mask, intr_mask); -+ -+ spin_unlock_irqrestore(&up->port.lock, flags); -+} -+ -+/* -+ * The output DMA channel is free - use it to send as many chars as -+ * possible. -+ */ -+ -+static void -+transmit_chars_dma(struct uart_cris_port *up) -+{ -+ struct dma_descr_data *descr, *pending_descr, *dmapos; -+ struct dma_descr_data *last_tx_descr; -+ struct circ_buf *xmit = &up->port.info->xmit; -+ unsigned int sentl = 0; -+ reg_dma_rw_ack_intr ack_intr = { .data = regk_dma_yes }; -+ reg_dma_rw_stat status; -+ reg_scope_instances regi_dmaout = up->regi_dmaout; -+ unsigned int chars_in_q; -+ unsigned int chars_to_send; -+ -+ /* Acknowledge dma data descriptor irq, if there was one. */ -+ REG_WR(dma, regi_dmaout, rw_ack_intr, ack_intr); -+ -+ /* -+ * First get the amount of bytes sent during the last DMA transfer, -+ * and update xmit accordingly. -+ */ -+ status = REG_RD(dma, regi_dmaout, rw_stat); -+ if (status.list_state == regk_dma_data_at_eol || !up->tx_started) -+ dmapos = phys_to_virt((int)up->last_tx_descr->next); -+ else -+ dmapos = phys_to_virt(REG_RD_INT(dma, regi_dmaout, rw_data)); -+ -+ pending_descr = up->first_tx_descr; -+ while (pending_descr != dmapos) { -+ sentl += pending_descr->after - pending_descr->buf; -+ pending_descr->after = pending_descr->buf = NULL; -+ pending_descr = phys_to_virt((int)pending_descr->next); -+ } -+ -+ up->first_tx_descr = pending_descr; -+ last_tx_descr = up->last_tx_descr; -+ -+ /* Update stats. */ -+ up->port.icount.tx += sentl; -+ -+ up->tx_pending_chars -= sentl; -+ -+ /* Update xmit buffer. */ -+ xmit->tail = (xmit->tail + sentl) & (UART_XMIT_SIZE - 1); -+ -+ /* -+ * Find out the largest amount of consecutive bytes we want to send -+ * now. -+ */ -+ chars_in_q = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE); -+ -+ if (chars_in_q == 0) -+ /* Tell upper layers that we're now idle. */ -+ goto done; -+ -+ /* Some of those characters are actually pending output. */ -+ chars_to_send = chars_in_q - up->tx_pending_chars; -+ -+ /* -+ * Clamp the new number of pending chars to the advertised -+ * one. -+ */ -+ if (chars_to_send + up->tx_pending_chars > up->port.fifosize) -+ chars_to_send = up->port.fifosize - up->tx_pending_chars; -+ -+ /* If we don't want to send any, we're done. */ -+ if (chars_to_send == 0) -+ goto done; -+ -+ descr = phys_to_virt((int)last_tx_descr->next); -+ -+ /* -+ * We can't send anything if we could make the condition in -+ * the while-loop above (reaping finished descriptors) be met -+ * immediately before the first iteration. However, don't -+ * mistake the full state for the empty state. -+ */ -+ if ((descr == up->first_tx_descr && up->tx_pending_chars != 0) -+ || descr->next == up->first_tx_descr) -+ goto done; -+ -+ /* Set up the descriptor for output. */ -+ descr->buf = (void*)virt_to_phys(xmit->buf + xmit->tail -+ + up->tx_pending_chars); -+ descr->after = descr->buf + chars_to_send; -+ descr->eol = 1; -+ descr->out_eop = 0; -+ descr->intr = 1; -+ descr->wait = 0; -+ descr->in_eop = 0; -+ descr->md = 0; -+ /* -+ * Make sure GCC doesn't move this eol clear before the eol set -+ * above. -+ */ -+ barrier(); -+ last_tx_descr->eol = 0; -+ -+ up->last_tx_descr = descr; -+ up->tx_pending_chars += chars_to_send; -+ -+ if (!up->tx_started) { -+ up->tx_started = 1; -+ up->tr_context_descr.next = 0; -+ up->tr_context_descr.saved_data -+ = (dma_descr_data*)virt_to_phys(descr); -+ up->tr_context_descr.saved_data_buf = descr->buf; -+ DMA_START_CONTEXT(regi_dmaout, -+ virt_to_phys(&up->tr_context_descr)); -+ } else -+ DMA_CONTINUE_DATA(regi_dmaout); -+ -+ /* DMA is now running (hopefully). */ -+ -+ done: -+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) -+ uart_write_wakeup(&up->port); -+} -+ -+static void -+transmit_chars_no_dma(struct uart_cris_port *up) -+{ -+ int count; -+ struct circ_buf *xmit = &up->port.info->xmit; -+ -+ reg_scope_instances regi_ser = up->regi_ser; -+ reg_ser_r_stat_din rstat; -+ reg_ser_rw_ack_intr ack_intr = { .tr_rdy = regk_ser_yes }; -+ -+ if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { -+ /* No more to send, so disable the interrupt. */ -+ reg_ser_rw_intr_mask intr_mask; -+ intr_mask = REG_RD(ser, regi_ser, rw_intr_mask); -+ intr_mask.tr_rdy = 0; -+ intr_mask.tr_empty = 0; -+ REG_WR(ser, regi_ser, rw_intr_mask, intr_mask); -+ return; -+ } -+ -+ count = ETRAX_SER_FIFO_SIZE; -+ do { -+ reg_ser_rw_dout dout = { .data = xmit->buf[xmit->tail] }; -+ REG_WR(ser, regi_ser, rw_dout, dout); -+ REG_WR(ser, regi_ser, rw_ack_intr, ack_intr); -+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1); -+ up->port.icount.tx++; -+ if (xmit->head == xmit->tail) -+ break; -+ rstat = REG_RD(ser, regi_ser, r_stat_din); -+ } while ((--count > 0) && rstat.tr_rdy); -+ -+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) -+ uart_write_wakeup(&up->port); -+} /* transmit_chars_no_dma */ -+ -+static struct etrax_recv_buffer * -+alloc_recv_buffer(unsigned int size) -+{ -+ struct etrax_recv_buffer *buffer; -+ -+ if (!(buffer = kmalloc(sizeof *buffer + size, GFP_ATOMIC))) -+ panic("%s: Could not allocate %d bytes buffer\n", -+ __FUNCTION__, size); -+ -+ buffer->next = NULL; -+ buffer->length = 0; -+ buffer->error = TTY_NORMAL; -+ -+ return buffer; -+} -+ -+static void -+append_recv_buffer(struct uart_cris_port *up, -+ struct etrax_recv_buffer *buffer) -+{ -+ unsigned long flags; -+ -+ local_irq_save(flags); -+ -+ if (!up->first_recv_buffer) -+ up->first_recv_buffer = buffer; -+ else -+ up->last_recv_buffer->next = buffer; -+ -+ up->last_recv_buffer = buffer; -+ -+ up->recv_cnt += buffer->length; -+ if (up->recv_cnt > up->max_recv_cnt) -+ up->max_recv_cnt = up->recv_cnt; -+ -+ local_irq_restore(flags); -+} -+ -+static int -+add_char_and_flag(struct uart_cris_port *up, unsigned char data, -+ unsigned char flag) -+{ -+ struct etrax_recv_buffer *buffer; -+ -+ buffer = alloc_recv_buffer(4); -+ buffer->length = 1; -+ buffer->error = flag; -+ buffer->buffer[0] = data; -+ -+ append_recv_buffer(up, buffer); -+ -+ up->port.icount.rx++; -+ -+ return 1; -+} -+ -+static void -+flush_to_flip_buffer(struct uart_cris_port *up) -+{ -+ struct tty_struct *tty; -+ struct etrax_recv_buffer *buffer; -+ -+ tty = up->port.info->tty; -+ if (!up->first_recv_buffer || !tty) -+ return; -+ -+ while ((buffer = up->first_recv_buffer)) { -+ unsigned int count = (unsigned int) -+ tty_insert_flip_string(tty, buffer->buffer, -+ buffer->length); -+ -+ up->recv_cnt -= count; -+ -+ if (count == buffer->length) { -+ up->first_recv_buffer = buffer->next; -+ kfree(buffer); -+ } else { -+ buffer->length -= count; -+ memmove(buffer->buffer, buffer->buffer + count, -+ buffer->length); -+ buffer->error = TTY_NORMAL; -+ } -+ } -+ -+ if (!up->first_recv_buffer) -+ up->last_recv_buffer = NULL; -+ -+ /* This call includes a check for low-latency. */ -+ tty_flip_buffer_push(tty); -+} -+ -+static unsigned int -+handle_descr_data(struct uart_cris_port *up, struct dma_descr_data *descr, -+ unsigned int recvl) -+{ -+ struct etrax_recv_buffer *buffer -+ = phys_to_virt((unsigned long)descr->buf) - sizeof *buffer; -+ -+ if (up->recv_cnt + recvl > 65536) { -+ printk(KERN_ERR "Too much pending incoming data on %s!" -+ " Dropping %u bytes.\n", up->port.info->tty->name, -+ recvl); -+ return 0; -+ } -+ -+ buffer->length = recvl; -+ -+ append_recv_buffer(up, buffer); -+ -+ flush_to_flip_buffer(up); -+ -+ buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE); -+ descr->buf = (void*)virt_to_phys(buffer->buffer); -+ descr->after = descr->buf + SERIAL_DESCR_BUF_SIZE; -+ -+ return recvl; -+} -+ -+static unsigned int -+handle_all_descr_data(struct uart_cris_port *up) -+{ -+ struct dma_descr_data *descr -+ = &up->rec_descr[(up->cur_rec_descr - 1) -+ % SERIAL_RECV_DESCRIPTORS]; -+ struct dma_descr_data *prev_descr; -+ unsigned int recvl; -+ unsigned int ret = 0; -+ reg_scope_instances regi_dmain = up->regi_dmain; -+ -+ while (1) { -+ prev_descr = descr; -+ descr = &up->rec_descr[up->cur_rec_descr]; -+ -+ if (descr == phys_to_virt(REG_RD(dma, regi_dmain, rw_data))) -+ break; -+ -+ if (++up->cur_rec_descr == SERIAL_RECV_DESCRIPTORS) -+ up->cur_rec_descr = 0; -+ -+ /* Find out how many bytes were read. */ -+ recvl = descr->after - descr->buf; -+ -+ /* Update stats. */ -+ up->port.icount.rx += recvl; -+ -+ ret += handle_descr_data(up, descr, recvl); -+ descr->eol = 1; -+ /* -+ * Make sure GCC doesn't move this eol clear before the -+ * eol set above. -+ */ -+ barrier(); -+ prev_descr->eol = 0; -+ flush_dma_descr(descr,1); // Cache bug workaround -+ flush_dma_descr(prev_descr,0); // Cache bug workaround -+ } -+ -+ return ret; -+} -+ -+static void -+receive_chars_dma(struct uart_cris_port *up) -+{ -+ reg_ser_r_stat_din rstat; -+ reg_dma_rw_ack_intr ack_intr = {0}; -+ -+ /* Acknowledge both dma_descr and dma_eop irq. */ -+ ack_intr.data = 1; -+ ack_intr.in_eop = 1; -+ REG_WR(dma, up->regi_dmain, rw_ack_intr, ack_intr); -+ -+ handle_all_descr_data(up); -+ -+ /* Read the status register to detect errors. */ -+ rstat = REG_RD(ser, up->regi_ser, r_stat_din); -+ -+ if (rstat.framing_err | rstat.par_err | rstat.orun) { -+ /* -+ * If we got an error, we must reset it by reading the -+ * rs_stat_din register and put the data in buffer manually. -+ */ -+ reg_ser_rs_stat_din stat_din; -+ stat_din = REG_RD(ser, up->regi_ser, rs_stat_din); -+ -+ if (stat_din.par_err) -+ add_char_and_flag(up, stat_din.data, TTY_PARITY); -+ else if (stat_din.orun) -+ add_char_and_flag(up, stat_din.data, TTY_OVERRUN); -+ else if (stat_din.framing_err) -+ add_char_and_flag(up, stat_din.data, TTY_FRAME); -+ } -+ -+ /* Restart the receiving DMA, in case it got stuck on an EOL. */ -+ DMA_CONTINUE_DATA(up->regi_dmain); -+} -+ -+void receive_chars_no_dma(struct uart_cris_port *up) -+{ -+ reg_ser_rs_stat_din stat_din; -+ reg_ser_r_stat_din rstat; -+ struct tty_struct *tty; -+ struct uart_icount *icount; -+ int max_count = 16; -+ char flag; -+ reg_ser_rw_ack_intr ack_intr = { 0 }; -+ -+ rstat = REG_RD(ser, up->regi_ser, r_stat_din); -+ up->last_rx_active_usec = GET_JIFFIES_USEC(); -+ up->last_rx_active = jiffies; -+ icount = &up->port.icount; -+ tty = up->port.info->tty; -+ -+ do { -+ stat_din = REG_RD(ser, up->regi_ser, rs_stat_din); -+ -+ flag = TTY_NORMAL; -+ ack_intr.dav = 1; -+ REG_WR(ser, up->regi_ser, rw_ack_intr, ack_intr); -+ icount->rx++; -+ -+ if (stat_din.framing_err | stat_din.par_err | stat_din.orun) { -+ if (stat_din.data == 0x00 && -+ stat_din.framing_err) { -+ /* Most likely a break. */ -+ flag = TTY_BREAK; -+ icount->brk++; -+ } else if (stat_din.par_err) { -+ flag = TTY_PARITY; -+ icount->parity++; -+ } else if (stat_din.orun) { -+ flag = TTY_OVERRUN; -+ icount->overrun++; -+ } else if (stat_din.framing_err) { -+ flag = TTY_FRAME; -+ icount->frame++; -+ } -+ } -+ -+ /* -+ * If this becomes important, we probably *could* handle this -+ * gracefully by keeping track of the unhandled character. -+ */ -+ if (!tty_insert_flip_char(tty, stat_din.data, flag)) -+ panic("%s: No tty buffer space", __FUNCTION__); -+ rstat = REG_RD(ser, up->regi_ser, r_stat_din); -+ } while (rstat.dav && (max_count-- > 0)); -+ spin_unlock(&up->port.lock); -+ tty_flip_buffer_push(tty); -+ spin_lock(&up->port.lock); -+} /* receive_chars_no_dma */ -+ -+/* -+ * DMA output channel interrupt handler. -+ * this interrupt is called from DMA2(ser2), DMA8(ser3), DMA6(ser0) or -+ * DMA4(ser1) when they have finished a descriptor with the intr flag set. -+ */ -+ -+static irqreturn_t -+dma_tr_interrupt(int irq, void *dev_id, struct pt_regs * regs) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)dev_id; -+ reg_dma_r_masked_intr masked_intr; -+ reg_scope_instances regi_dmaout; -+ int handled = 0; -+ -+ spin_lock(&up->port.lock); -+ regi_dmaout = up->regi_dmaout; -+ if (!regi_dmaout) { -+ spin_unlock(&up->port.lock); -+ return IRQ_NONE; -+ } -+ -+ /* -+ * Check for dma_descr (don't need to check for dma_eop in -+ * output DMA for serial). -+ */ -+ masked_intr = REG_RD(dma, regi_dmaout, r_masked_intr); -+ -+ if (masked_intr.data) { -+ /* We can send a new dma bunch. make it so. */ -+ -+ /* -+ * Read jiffies_usec first. -+ * We want this time to be as late as possible. -+ */ -+ up->last_tx_active_usec = GET_JIFFIES_USEC(); -+ up->last_tx_active = jiffies; -+ transmit_chars_dma(up); -+ handled = 1; -+ } -+ check_modem_status(up); -+ spin_unlock(&up->port.lock); -+ return IRQ_RETVAL(handled); -+} -+ -+/* DMA input channel interrupt handler. */ -+ -+static irqreturn_t -+dma_rec_interrupt(int irq, void *dev_id, struct pt_regs * regs) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)dev_id; -+ reg_dma_r_masked_intr masked_intr; -+ reg_scope_instances regi_dmain; -+ int handled = 0; -+ -+ spin_lock(&up->port.lock); -+ regi_dmain = up->regi_dmain; -+ if (!regi_dmain) { -+ spin_unlock(&up->port.lock); -+ return IRQ_NONE; -+ } -+ -+ /* Check for both dma_eop and dma_descr for the input dma channel. */ -+ masked_intr = REG_RD(dma, regi_dmain, r_masked_intr); -+ if (masked_intr.data || masked_intr.in_eop) { -+ /* We have received something. */ -+ receive_chars_dma(up); -+ handled = 1; -+ } -+ check_modem_status(up); -+ spin_unlock(&up->port.lock); -+ return IRQ_RETVAL(handled); -+} -+ -+/* "Normal" serial port interrupt handler - both rx and tx. */ -+ -+static irqreturn_t -+ser_interrupt(int irq, void *dev_id, struct pt_regs *regs) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)dev_id; -+ reg_scope_instances regi_ser; -+ int handled = 0; -+ -+ spin_lock(&up->port.lock); -+ if (up->regi_dmain && up->regi_dmaout) { -+ spin_unlock(&up->port.lock); -+ return IRQ_NONE; -+ } -+ -+ regi_ser = up->regi_ser; -+ -+ if (regi_ser) { -+ reg_ser_r_masked_intr masked_intr; -+ masked_intr = REG_RD(ser, regi_ser, r_masked_intr); -+ /* -+ * Check what interrupts are active before taking -+ * actions. If DMA is used the interrupt shouldn't -+ * be enabled. -+ */ -+ if (masked_intr.dav) { -+ receive_chars_no_dma(up); -+ handled = 1; -+ } -+ check_modem_status(up); -+ -+ if (masked_intr.tr_rdy) { -+ transmit_chars_no_dma(up); -+ handled = 1; -+ } -+ } -+ spin_unlock(&up->port.lock); -+ return IRQ_RETVAL(handled); -+} /* ser_interrupt */ -+ -+static int start_recv_dma(struct uart_cris_port *up) -+{ -+ struct dma_descr_data *descr = up->rec_descr; -+ struct etrax_recv_buffer *buffer; -+ int i; -+ -+ /* Set up the receiving descriptors. */ -+ for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) { -+ buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE); -+ descr[i].next = (void*)virt_to_phys(&descr[i+1]); -+ descr[i].buf = (void*)virt_to_phys(buffer->buffer); -+ descr[i].after = descr[i].buf + SERIAL_DESCR_BUF_SIZE; -+ descr[i].eol = 0; -+ descr[i].out_eop = 0; -+ descr[i].intr = 1; -+ descr[i].wait = 0; -+ descr[i].in_eop = 0; -+ descr[i].md = 0; -+ -+ } -+ -+ /* Link the last descriptor to the first. */ -+ descr[i-1].next = (void*)virt_to_phys(&descr[0]); -+ -+ /* And mark it as end of list. */ -+ descr[i-1].eol = 1; -+ -+ /* Start with the first descriptor in the list. */ -+ up->cur_rec_descr = 0; -+ up->rec_context_descr.next = 0; -+ up->rec_context_descr.saved_data -+ = (dma_descr_data *)virt_to_phys(&descr[up->cur_rec_descr]); -+ up->rec_context_descr.saved_data_buf = descr[up->cur_rec_descr].buf; -+ -+ /* Start the DMA. */ -+ DMA_START_CONTEXT(up->regi_dmain, -+ virt_to_phys(&up->rec_context_descr)); -+ -+ /* Input DMA should be running now. */ -+ return 1; -+} -+ -+ -+static void start_receive(struct uart_cris_port *up) -+{ -+ reg_scope_instances regi_dmain = up->regi_dmain; -+ if (regi_dmain) { -+ start_recv_dma(up); -+ } -+} -+ -+ -+static void start_transmitter(struct uart_cris_port *up) -+{ -+ int i; -+ reg_scope_instances regi_dmaout = up->regi_dmaout; -+ if (regi_dmaout) { -+ for (i = 0; i < SERIAL_TX_DESCRIPTORS; i++) { -+ memset(&up->tr_descr[i], 0, sizeof(up->tr_descr[i])); -+ up->tr_descr[i].eol = 1; -+ up->tr_descr[i].intr = 1; -+ up->tr_descr[i].next = (dma_descr_data *) -+ virt_to_phys(&up->tr_descr[i+1]); -+ } -+ up->tr_descr[i-1].next = (dma_descr_data *) -+ virt_to_phys(&up->tr_descr[0]); -+ up->first_tx_descr = &up->tr_descr[0]; -+ -+ /* -+ * We'll be counting up to up->last_tx_descr->next from -+ * up->first_tx_descr when starting DMA, so we should make -+ * them the same for the very first round. If instead we'd -+ * set last_tx_descr = first_tx_descr, we'd rely on -+ * accidentally working code and data as we'd take a pass over -+ * the first, unused, descriptor. -+ */ -+ up->last_tx_descr = &up->tr_descr[i-1]; -+ up->tx_started = 0; -+ up->tx_pending_chars = 0; -+ } -+} -+ -+static int serial_cris_startup(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ unsigned long flags; -+ reg_intr_vect_rw_mask intr_mask; -+ reg_ser_rw_intr_mask ser_intr_mask = {0}; -+ reg_dma_rw_intr_mask dmain_intr_mask = {0}; -+ reg_dma_rw_intr_mask dmaout_intr_mask = {0}; -+ reg_dma_rw_cfg cfg = {.en = 1}; -+ reg_scope_instances regi_dma; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ -+ intr_mask = REG_RD(intr_vect, regi_irq, rw_mask); -+ -+ dmain_intr_mask.data = dmain_intr_mask.in_eop = regk_dma_yes; -+ dmaout_intr_mask.data = regk_dma_yes; -+ if (!up->regi_dmain) -+ ser_intr_mask.dav = regk_ser_yes; -+ -+ if (port->line == 0) { -+ if (request_irq(SER0_INTR_VECT, ser_interrupt, -+ IRQF_SHARED | IRQF_DISABLED, "ser0", -+ &serial_cris_ports[0])) -+ panic("irq ser0"); -+ /* Enable the ser0 irq in global config. */ -+ intr_mask.ser0 = 1; -+ /* Port ser0 can use dma6 for tx and dma7 for rx. */ -+#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT -+ if (request_irq(DMA6_INTR_VECT, dma_tr_interrupt, -+ IRQF_DISABLED, "serial 0 dma tr", -+ &serial_cris_ports[0])) -+ panic("irq ser0txdma"); -+ crisv32_request_dma(6, "ser0", DMA_PANIC_ON_ERROR, 0, -+ dma_ser0); -+ /* Enable the dma6 irq in global config. */ -+ intr_mask.dma6 = 1; -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN -+ if (request_irq(DMA7_INTR_VECT, dma_rec_interrupt, -+ IRQF_DISABLED, "serial 0 dma rec", -+ &serial_cris_ports[0])) -+ panic("irq ser0rxdma"); -+ crisv32_request_dma(7, "ser0", DMA_PANIC_ON_ERROR, 0, -+ dma_ser0); -+ /* Enable the dma7 irq in global config. */ -+ intr_mask.dma7 = 1; -+#endif -+ } else if (port->line == 1) { -+ if (request_irq(SER1_INTR_VECT, ser_interrupt, -+ IRQF_SHARED | IRQF_DISABLED, "ser1", -+ &serial_cris_ports[1])) -+ panic("irq ser1"); -+ /* Enable the ser1 irq in global config. */ -+ intr_mask.ser1 = 1; -+ -+ /* Port ser1 can use dma4 for tx and dma5 for rx. */ -+#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA4_OUT -+ if (request_irq(DMA4_INTR_VECT, dma_tr_interrupt, -+ IRQF_DISABLED, "serial 1 dma tr", -+ &serial_cris_ports[1])) -+ panic("irq ser1txdma"); -+ crisv32_request_dma(4, "ser1", DMA_PANIC_ON_ERROR, 0, -+ dma_ser1); -+ /* Enable the dma4 irq in global config. */ -+ intr_mask.dma4 = 1; -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA5_IN -+ if (request_irq(DMA5_INTR_VECT, dma_rec_interrupt, -+ IRQF_DISABLED, "serial 1 dma rec", -+ &serial_cris_ports[1])) -+ panic("irq ser1rxdma"); -+ crisv32_request_dma(5, "ser1", DMA_PANIC_ON_ERROR, 0, -+ dma_ser1); -+ /* Enable the dma5 irq in global config. */ -+ intr_mask.dma5 = 1; -+#endif -+ } else if (port->line == 2) { -+ if (request_irq(SER2_INTR_VECT, ser_interrupt, -+ IRQF_SHARED | IRQF_DISABLED, "ser2", -+ &serial_cris_ports[2])) -+ panic("irq ser2"); -+ /* Enable the ser2 irq in global config. */ -+ intr_mask.ser2 = 1; -+ -+ /* Port ser2 can use dma2 for tx and dma3 for rx. */ -+#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT -+ if (request_irq(DMA2_INTR_VECT, dma_tr_interrupt, -+ IRQF_DISABLED, "serial 2 dma tr", -+ &serial_cris_ports[2])) -+ panic("irq ser2txdma"); -+ crisv32_request_dma(2, "ser2", DMA_PANIC_ON_ERROR, 0, -+ dma_ser2); -+ /* Enable the dma2 irq in global config. */ -+ intr_mask.dma2 = 1; -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN -+ if (request_irq(DMA3_INTR_VECT, dma_rec_interrupt, -+ IRQF_DISABLED, "serial 2 dma rec", -+ &serial_cris_ports[2])) -+ panic("irq ser2rxdma"); -+ crisv32_request_dma(3, "ser2", DMA_PANIC_ON_ERROR, 0, -+ dma_ser2); -+ /* Enable the dma3 irq in global config. */ -+ intr_mask.dma3 = 1; -+#endif -+ } else if (port->line == 3) { -+ if (request_irq(SER3_INTR_VECT, ser_interrupt, -+ IRQF_SHARED | IRQF_DISABLED, "ser3", -+ &serial_cris_ports[3])) -+ panic("irq ser3" ); -+ /* Enable the ser3 irq in global config. */ -+ intr_mask.ser3 = 1; -+ -+ /* Port ser3 can use dma8 for tx and dma9 for rx. */ -+#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT -+ if (request_irq(DMA8_INTR_VECT, dma_tr_interrupt, -+ IRQF_DISABLED, "serial 3 dma tr", -+ &serial_cris_ports[3])) -+ panic("irq ser3txdma"); -+ crisv32_request_dma(8, "ser3", DMA_PANIC_ON_ERROR, 0, -+ dma_ser3); -+ /* Enable the dma2 irq in global config. */ -+ intr_mask.dma8 = 1; -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN -+ if (request_irq(DMA9_INTR_VECT, dma_rec_interrupt, -+ IRQF_DISABLED, "serial 3 dma rec", -+ &serial_cris_ports[3])) -+ panic("irq ser3rxdma"); -+ crisv32_request_dma(9, "ser3", DMA_PANIC_ON_ERROR, 0, -+ dma_ser3); -+ /* Enable the dma3 irq in global config. */ -+ intr_mask.dma9 = 1; -+#endif -+ } -+ -+ /* -+ * Reset the DMA channels and make sure their interrupts are cleared. -+ */ -+ -+ regi_dma = up->regi_dmain; -+ if (regi_dma) { -+ reg_dma_rw_ack_intr ack_intr = { 0 }; -+ DMA_RESET(regi_dma); -+ /* Wait until reset cycle is complete. */ -+ DMA_WAIT_UNTIL_RESET(regi_dma); -+ REG_WR(dma, regi_dma, rw_cfg, cfg); -+ /* Make sure the irqs are cleared. */ -+ ack_intr.group = 1; -+ ack_intr.ctxt = 1; -+ ack_intr.data = 1; -+ ack_intr.in_eop = 1; -+ ack_intr.stream_cmd = 1; -+ REG_WR(dma, regi_dma, rw_ack_intr, ack_intr); -+ } -+ regi_dma = up->regi_dmaout; -+ if (regi_dma) { -+ reg_dma_rw_ack_intr ack_intr = { 0 }; -+ DMA_RESET(regi_dma); -+ /* Wait until reset cycle is complete. */ -+ DMA_WAIT_UNTIL_RESET(regi_dma); -+ REG_WR(dma, regi_dma, rw_cfg, cfg); -+ /* Make sure the irqs are cleared. */ -+ ack_intr.group = 1; -+ ack_intr.ctxt = 1; -+ ack_intr.data = 1; -+ ack_intr.in_eop = 1; -+ ack_intr.stream_cmd = 1; -+ REG_WR(dma, regi_dma, rw_ack_intr, ack_intr); -+ } -+ -+ REG_WR(intr_vect, regi_irq, rw_mask, intr_mask); -+ REG_WR(ser, up->regi_ser, rw_intr_mask, ser_intr_mask); -+ if (up->regi_dmain) -+ REG_WR(dma, up->regi_dmain, rw_intr_mask, dmain_intr_mask); -+ if (up->regi_dmaout) -+ REG_WR(dma, up->regi_dmaout, rw_intr_mask, dmaout_intr_mask); -+ -+ start_receive(up); -+ start_transmitter(up); -+ -+ serial_cris_set_mctrl(&up->port, up->port.mctrl); -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ -+ return 0; -+} -+ -+static void serial_cris_shutdown(struct uart_port *port) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ unsigned long flags; -+ reg_intr_vect_rw_mask intr_mask; -+ -+ spin_lock_irqsave(&up->port.lock, flags); -+ -+ intr_mask = REG_RD(intr_vect, regi_irq, rw_mask); -+ serial_cris_stop_tx(port); -+ serial_cris_stop_rx(port); -+ -+ if (port->line == 0) { -+ intr_mask.ser0 = 0; -+ free_irq(SER0_INTR_VECT, &serial_cris_ports[0]); -+#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT -+ intr_mask.dma6 = 0; -+ crisv32_free_dma(6); -+ free_irq(DMA6_INTR_VECT, &serial_cris_ports[0]); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN -+ intr_mask.dma7 = 0; -+ crisv32_free_dma(7); -+ free_irq(DMA7_INTR_VECT, &serial_cris_ports[0]); -+#endif -+ } else if (port->line == 1) { -+ intr_mask.ser1 = 0; -+ free_irq(SER1_INTR_VECT, &serial_cris_ports[1]); -+#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA4_OUT -+ intr_mask.dma4 = 0; -+ crisv32_free_dma(4); -+ free_irq(DMA4_INTR_VECT, &serial_cris_ports[1]); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA5_IN -+ intr_mask.dma5 = 0; -+ crisv32_free_dma(5); -+ free_irq(DMA5_INTR_VECT, &serial_cris_ports[1]); -+#endif -+ } else if (port->line == 2) { -+ intr_mask.ser2 = 0; -+ free_irq(SER2_INTR_VECT, &serial_cris_ports[2]); -+#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT -+ intr_mask.dma2 = 0; -+ crisv32_free_dma(2); -+ free_irq(DMA2_INTR_VECT, &serial_cris_ports[2]); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN -+ intr_mask.dma3 = 0; -+ crisv32_free_dma(3); -+ free_irq(DMA3_INTR_VECT, &serial_cris_ports[2]); -+#endif -+ } else if (port->line == 3) { -+ intr_mask.ser3 = 0; -+ free_irq(SER3_INTR_VECT, &serial_cris_ports[3]); -+#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT -+ intr_mask.dma8 = 0; -+ crisv32_free_dma(8); -+ free_irq(DMA8_INTR_VECT, &serial_cris_ports[3]); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN -+ intr_mask.dma9 = 0; -+ crisv32_free_dma(9); -+ free_irq(DMA9_INTR_VECT, &serial_cris_ports[3]); -+#endif -+ } -+ -+ REG_WR(intr_vect, regi_irq, rw_mask, intr_mask); -+ -+ serial_cris_set_mctrl(&up->port, up->port.mctrl); -+ -+ if (up->regi_dmain) { -+ struct etrax_recv_buffer *rb; -+ struct etrax_recv_buffer *rb_next; -+ int i; -+ struct dma_descr_data *descr; -+ -+ /* -+ * In case of DMA and receive errors, there might be pending -+ * receive buffers still linked here and not flushed upwards. -+ * Release them. -+ */ -+ for (rb = up->first_recv_buffer; rb != NULL; rb = rb_next) { -+ rb_next = rb->next; -+ kfree (rb); -+ } -+ up->first_recv_buffer = NULL; -+ up->last_recv_buffer = NULL; -+ -+ /* -+ * Also release buffers that were attached to the DMA -+ * before we shut down the hardware above. -+ */ -+ for (i = 0, descr = up->rec_descr; -+ i < SERIAL_RECV_DESCRIPTORS; -+ i++) -+ if (descr[i].buf) { -+ rb = phys_to_virt((u32) descr[i].buf) -+ - sizeof *rb; -+ kfree(rb); -+ descr[i].buf = NULL; -+ } -+ } -+ -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ -+} -+ -+static void -+serial_cris_set_termios(struct uart_port *port, struct termios *termios, -+ struct termios *old) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ unsigned long flags; -+ reg_ser_rw_xoff xoff; -+ reg_ser_rw_xoff_clr xoff_clr = {0}; -+ reg_ser_rw_tr_ctrl tx_ctrl = {0}; -+ reg_ser_rw_tr_dma_en tx_dma_en = {0}; -+ reg_ser_rw_rec_ctrl rx_ctrl = {0}; -+ reg_ser_rw_tr_baud_div tx_baud_div = {0}; -+ reg_ser_rw_rec_baud_div rx_baud_div = {0}; -+ reg_ser_r_stat_din rstat; -+ int baud; -+ -+ if (old && -+ termios->c_cflag == old->c_cflag && -+ termios->c_iflag == old->c_iflag) -+ return; -+ -+ /* Start with default settings and then fill in changes. */ -+ -+ /* Tx: 8 bit, no/even parity, 1 stop bit, no cts. */ -+ tx_ctrl.base_freq = regk_ser_f29_493; -+ tx_ctrl.en = 0; -+ tx_ctrl.stop = 0; -+#ifdef CONFIG_ETRAX_RS485 -+ if (up->rs485.enabled && (up->port_type != TYPE_485FD)) { -+ tx_ctrl.auto_rts = regk_ser_yes; -+ } else -+#endif -+ tx_ctrl.auto_rts = regk_ser_no; -+ tx_ctrl.txd = 1; -+ tx_ctrl.auto_cts = 0; -+ /* Rx: 8 bit, no/even parity. */ -+ if (up->regi_dmain) { -+ rx_ctrl.dma_mode = 1; -+ rx_ctrl.auto_eop = 1; -+ } -+ rx_ctrl.dma_err = regk_ser_stop; -+ rx_ctrl.sampling = regk_ser_majority; -+ rx_ctrl.timeout = 1; -+ -+#ifdef CONFIG_ETRAX_RS485 -+ if (up->rs485.enabled && (up->port_type != TYPE_485FD)) { -+# ifdef CONFIG_ETRAX_RS485_DISABLE_RECEIVER -+ rx_ctrl.half_duplex = regk_ser_yes; -+# endif -+ rx_ctrl.rts_n = up->rs485.rts_after_sent ? -+ regk_ser_active : regk_ser_inactive; -+ } else if (up->port_type == TYPE_485FD) { -+ rx_ctrl.rts_n = regk_ser_active; -+ } else -+#endif -+ rx_ctrl.rts_n = regk_ser_inactive; -+ -+ /* Common for tx and rx: 8N1. */ -+ tx_ctrl.data_bits = regk_ser_bits8; -+ rx_ctrl.data_bits = regk_ser_bits8; -+ tx_ctrl.par = regk_ser_even; -+ rx_ctrl.par = regk_ser_even; -+ tx_ctrl.par_en = regk_ser_no; -+ rx_ctrl.par_en = regk_ser_no; -+ -+ tx_ctrl.stop_bits = regk_ser_bits1; -+ -+ -+ /* Change baud-rate and write it to the hardware. */ -+ -+ /* baud_clock = base_freq / (divisor*8) -+ * divisor = base_freq / (baud_clock * 8) -+ * base_freq is either: -+ * off, ext, 29.493MHz, 32.000 MHz, 32.768 MHz or 100 MHz -+ * 20.493MHz is used for standard baudrates -+ */ -+ -+ /* -+ * For the console port we keep the original baudrate here. Not very -+ * beautiful. -+ */ -+ if ((port != console_port) || old) -+ baud = uart_get_baud_rate(port, termios, old, 0, -+ port->uartclk / 8); -+ else -+ baud = console_baud; -+ -+ tx_baud_div.div = 29493000 / (8 * baud); -+ /* Rx uses same as tx. */ -+ rx_baud_div.div = tx_baud_div.div; -+ rx_ctrl.base_freq = tx_ctrl.base_freq; -+ -+ if ((termios->c_cflag & CSIZE) == CS7) { -+ /* Set 7 bit mode. */ -+ tx_ctrl.data_bits = regk_ser_bits7; -+ rx_ctrl.data_bits = regk_ser_bits7; -+ } -+ -+ if (termios->c_cflag & CSTOPB) { -+ /* Set 2 stop bit mode. */ -+ tx_ctrl.stop_bits = regk_ser_bits2; -+ } -+ -+ if (termios->c_cflag & PARENB) { -+ /* Enable parity. */ -+ tx_ctrl.par_en = regk_ser_yes; -+ rx_ctrl.par_en = regk_ser_yes; -+ } -+ -+ if (termios->c_cflag & CMSPAR) { -+ if (termios->c_cflag & PARODD) { -+ /* Set mark parity if PARODD and CMSPAR. */ -+ tx_ctrl.par = regk_ser_mark; -+ rx_ctrl.par = regk_ser_mark; -+ } else { -+ tx_ctrl.par = regk_ser_space; -+ rx_ctrl.par = regk_ser_space; -+ } -+ } else { -+ if (termios->c_cflag & PARODD) { -+ /* Set odd parity. */ -+ tx_ctrl.par = regk_ser_odd; -+ rx_ctrl.par = regk_ser_odd; -+ } -+ } -+ -+ if (termios->c_cflag & CRTSCTS) { -+ /* Enable automatic CTS handling. */ -+ tx_ctrl.auto_cts = regk_ser_yes; -+ } -+ -+ /* Make sure the tx and rx are enabled. */ -+ tx_ctrl.en = regk_ser_yes; -+ rx_ctrl.en = regk_ser_yes; -+ -+ /* -+ * Wait for tr_idle in case a character is being output, so it won't -+ * be damaged by the changes we do below. It seems the termios -+ * changes "sometimes" (we can't see e.g. a tcsetattr TCSANOW -+ * parameter here) should take place no matter what state. However, -+ * in case we should wait, we may have a non-empty transmitter state -+ * as we tell the upper layers that we're all done when we've passed -+ * characters to the hardware, but we don't wait for them being -+ * actually shifted out. -+ */ -+ spin_lock_irqsave(&port->lock, flags); -+ -+ /* -+ * None of our interrupts re-enable DMA, so it's thankfully ok to -+ * disable it once, outside the loop. -+ */ -+ tx_dma_en.en = 0; -+ REG_WR(ser, up->regi_ser, rw_tr_dma_en, tx_dma_en); -+ do { -+ /* -+ * Make sure we have integrity between the read r_stat status -+ * and us writing the registers below, but don't busy-wait -+ * with interrupts off. We need to keep the port lock though -+ * (if we go SMP), so nobody else writes characters. -+ */ -+ local_irq_restore(flags); -+ local_irq_save(flags); -+ rstat = REG_RD(ser, up->regi_ser, r_stat_din); -+ } while (!rstat.tr_idle); -+ -+ /* Actually write the control regs (if modified) to the hardware. */ -+ -+ uart_update_timeout(port, termios->c_cflag, port->uartclk/8); -+ MODIFY_REG(up->regi_ser, rw_rec_baud_div, rx_baud_div); -+ MODIFY_REG(up->regi_ser, rw_rec_ctrl, rx_ctrl); -+ -+ MODIFY_REG(up->regi_ser, rw_tr_baud_div, tx_baud_div); -+ MODIFY_REG(up->regi_ser, rw_tr_ctrl, tx_ctrl); -+ -+ tx_dma_en.en = up->regi_dmaout != 0; -+ REG_WR(ser, up->regi_ser, rw_tr_dma_en, tx_dma_en); -+ -+ xoff = REG_RD(ser, up->regi_ser, rw_xoff); -+ -+ if (up->port.info && (up->port.info->tty->termios->c_iflag & IXON)) { -+ xoff.chr = STOP_CHAR(up->port.info->tty); -+ xoff.automatic = regk_ser_yes; -+ } else -+ xoff.automatic = regk_ser_no; -+ -+ MODIFY_REG(up->regi_ser, rw_xoff, xoff); -+ -+ /* -+ * Make sure we don't start in an automatically shut-off state due to -+ * a previous early exit. -+ */ -+ xoff_clr.clr = 1; -+ REG_WR(ser, up->regi_ser, rw_xoff_clr, xoff_clr); -+ -+ serial_cris_set_mctrl(&up->port, up->port.mctrl); -+ spin_unlock_irqrestore(&up->port.lock, flags); -+} -+ -+static const char * -+serial_cris_type(struct uart_port *port) -+{ -+ return "CRISv32"; -+} -+ -+static void serial_cris_release_port(struct uart_port *port) -+{ -+} -+ -+static int serial_cris_request_port(struct uart_port *port) -+{ -+ return 0; -+} -+ -+static void serial_cris_config_port(struct uart_port *port, int flags) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ up->port.type = PORT_CRIS; -+} -+ -+#if defined(CONFIG_ETRAX_RS485) -+ -+static void cris_set_rs485_mode(struct uart_cris_port* up) { -+ reg_ser_rw_tr_ctrl tr_ctrl; -+ reg_ser_rw_rec_ctrl rec_ctrl; -+ reg_scope_instances regi_ser = up->regi_ser; -+ -+ if (up->port_type == TYPE_485FD) -+ /* We do not want to change anything if we are in 485FD mode */ -+ return; -+ -+ tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl); -+ rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl); -+ -+ /* Set port in RS-485 mode */ -+ if (up->rs485.enabled) { -+ tr_ctrl.auto_rts = regk_ser_yes; -+ rec_ctrl.rts_n = up->rs485.rts_after_sent ? -+ regk_ser_active : regk_ser_inactive; -+#ifdef CONFIG_ETRAX_RS485_DISABLE_RECEIVER -+ rec_ctrl.half_duplex = regk_ser_yes; -+#endif -+ } -+ /* Set port to RS-232 mode */ -+ else { -+ rec_ctrl.rts_n = regk_ser_inactive; -+ tr_ctrl.auto_rts = regk_ser_no; -+ rec_ctrl.half_duplex = regk_ser_no; -+ } -+ -+ REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl); -+ REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl); -+} -+ -+/* Enable/disable RS-485 mode on selected port. */ -+static int -+cris_enable_rs485(struct uart_cris_port* up, struct rs485_control *r) -+{ -+ if (up->port_type == TYPE_485FD) -+ /* Port in 485FD mode can not chage mode */ -+ goto out; -+ -+ up->rs485.enabled = 0x1 & r->enabled; -+ up->rs485.rts_on_send = 0x01 & r->rts_on_send; -+ up->rs485.rts_after_sent = 0x01 & r->rts_after_sent; -+ up->rs485.delay_rts_before_send = r->delay_rts_before_send; -+ -+ cris_set_rs485_mode(up); -+ out: -+ return 0; -+} -+ -+ -+/* Enable RS485 mode on port and send the data. Port will stay -+ * in 485 mode after the data has been sent. -+ */ -+static int -+cris_write_rs485(struct uart_cris_port* up, const unsigned char *buf, -+ int count) -+{ -+ up->rs485.enabled = 1; -+ -+ /* Set the port in RS485 mode */ -+ cris_set_rs485_mode(up); -+ -+ /* Send the data */ -+ count = serial_cris_driver.tty_driver->write(up->port.info->tty, buf, count); -+ -+ return count; -+} -+ -+#endif /* CONFIG_ETRAX_RS485 */ -+ -+static int serial_cris_ioctl(struct uart_port *port, unsigned int cmd, -+ unsigned long arg) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ -+ switch (cmd) { -+#if defined(CONFIG_ETRAX_RS485) -+ case TIOCSERSETRS485: { -+ struct rs485_control rs485ctrl; -+ if (copy_from_user(&rs485ctrl, (struct rs485_control*) arg, -+ sizeof(rs485ctrl))) -+ return -EFAULT; -+ -+ return cris_enable_rs485(up, &rs485ctrl); -+ } -+ -+ case TIOCSERWRRS485: { -+ struct rs485_write rs485wr; -+ if (copy_from_user(&rs485wr, (struct rs485_write*)arg, -+ sizeof(rs485wr))) -+ return -EFAULT; -+ -+ return cris_write_rs485(up, rs485wr.outc, rs485wr.outc_size); -+ } -+#endif -+ default: -+ return -ENOIOCTLCMD; -+ } -+ -+ return 0; -+} -+ -+static const struct uart_ops serial_cris_pops = { -+ .tx_empty = serial_cris_tx_empty, -+ .set_mctrl = serial_cris_set_mctrl, -+ .get_mctrl = serial_cris_get_mctrl, -+ .stop_tx = serial_cris_stop_tx, -+ .start_tx = serial_cris_start_tx, -+ .send_xchar = serial_cris_send_xchar, -+ .stop_rx = serial_cris_stop_rx, -+ .enable_ms = serial_cris_enable_ms, -+ .break_ctl = serial_cris_break_ctl, -+ .startup = serial_cris_startup, -+ .shutdown = serial_cris_shutdown, -+ .set_termios = serial_cris_set_termios, -+ .type = serial_cris_type, -+ .release_port = serial_cris_release_port, -+ .request_port = serial_cris_request_port, -+ .config_port = serial_cris_config_port, -+ .ioctl = serial_cris_ioctl, -+}; -+ -+/* -+ * It's too easy to break CONFIG_ETRAX_DEBUG_PORT_NULL and the -+ * no-config choices by adding and moving code to before a necessary -+ * early exit in all functions for the special case of -+ * up->regi_ser == 0. This collection of dummy functions lets us -+ * avoid that. Maybe there should be a generic table of dummy serial -+ * functions? -+ */ -+ -+static unsigned int serial_cris_tx_empty_dummy(struct uart_port *port) -+{ -+ return TIOCSER_TEMT; -+} -+ -+static void serial_cris_set_mctrl_dummy(struct uart_port *port, -+ unsigned int mctrl) -+{ -+} -+ -+static unsigned int serial_cris_get_mctrl_dummy(struct uart_port *port) -+{ -+ return 0; -+} -+ -+static void serial_cris_stop_tx_dummy(struct uart_port *port) -+{ -+} -+ -+static void serial_cris_start_tx_dummy(struct uart_port *port) -+{ -+ /* Discard outbound characters. */ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ struct circ_buf *xmit = &up->port.info->xmit; -+ xmit->tail = xmit->head; -+ uart_write_wakeup(port); -+} -+ -+#define serial_cris_stop_rx_dummy serial_cris_stop_tx_dummy -+ -+#define serial_cris_enable_ms_dummy serial_cris_stop_tx_dummy -+ -+static void serial_cris_break_ctl_dummy(struct uart_port *port, -+ int break_state) -+{ -+} -+ -+static int serial_cris_startup_dummy(struct uart_port *port) -+{ -+ return 0; -+} -+ -+#define serial_cris_shutdown_dummy serial_cris_stop_tx_dummy -+ -+static void -+serial_cris_set_termios_dummy(struct uart_port *port, struct termios *termios, -+ struct termios *old) -+{ -+} -+ -+#define serial_cris_release_port_dummy serial_cris_stop_tx_dummy -+#define serial_cris_request_port_dummy serial_cris_startup_dummy -+ -+static const struct uart_ops serial_cris_dummy_pops = { -+ /* -+ * We *could* save one or two of those with different -+ * signature by casting and knowledge of the ABI, but it's -+ * just not worth the maintenance headache. -+ * For the ones we don't define here, the default (usually meaning -+ * "unimplemented") makes sense. -+ */ -+ .tx_empty = serial_cris_tx_empty_dummy, -+ .set_mctrl = serial_cris_set_mctrl_dummy, -+ .get_mctrl = serial_cris_get_mctrl_dummy, -+ .stop_tx = serial_cris_stop_tx_dummy, -+ .start_tx = serial_cris_start_tx_dummy, -+ .stop_rx = serial_cris_stop_rx_dummy, -+ .enable_ms = serial_cris_enable_ms_dummy, -+ .break_ctl = serial_cris_break_ctl_dummy, -+ .startup = serial_cris_startup_dummy, -+ .shutdown = serial_cris_shutdown_dummy, -+ .set_termios = serial_cris_set_termios_dummy, -+ -+ /* This one we keep the same. */ -+ .type = serial_cris_type, -+ -+ .release_port = serial_cris_release_port_dummy, -+ .request_port = serial_cris_request_port_dummy, -+ -+ /* -+ * This one we keep the same too, as long as it doesn't do -+ * anything else but to set the type. -+ */ -+ .config_port = serial_cris_config_port, -+}; -+ -+static void cris_serial_port_init(struct uart_port *port, int line) -+{ -+ struct uart_cris_port *up = (struct uart_cris_port *)port; -+ static int first = 1; -+ -+ if (up->initialized) -+ return; -+ up->initialized = 1; -+ port->line = line; -+ spin_lock_init(&port->lock); -+ port->ops = -+ up->regi_ser == 0 ? &serial_cris_dummy_pops : -+ &serial_cris_pops; -+ port->irq = up->irq; -+ port->iobase = up->regi_ser ? up->regi_ser : 1; -+ port->uartclk = 29493000; -+ -+ /* -+ * We can't fit any more than 255 here (unsigned char), though -+ * actually UART_XMIT_SIZE characters could be pending output (if it -+ * wasn't for the single test in transmit_chars_dma). At time of this -+ * writing, the definition of "fifosize" is here the amount of -+ * characters that can be pending output after a start_tx call until -+ * tx_empty returns 1: see serial_core.c:uart_wait_until_sent. This -+ * matters for timeout calculations unfortunately, but keeping larger -+ * amounts at the DMA wouldn't win much so let's just play nice. -+ */ -+ port->fifosize = 255; -+ port->flags = UPF_BOOT_AUTOCONF; -+ -+#ifdef CONFIG_ETRAX_RS485 -+ /* Set sane defaults. */ -+ up->rs485.rts_on_send = 0; -+ up->rs485.rts_after_sent = 1; -+ up->rs485.delay_rts_before_send = 0; -+ if (up->port_type > TYPE_232) -+ up->rs485.enabled = 1; -+ else -+ up->rs485.enabled = 0; -+#endif -+ -+ if (first) { -+ first = 0; -+#ifdef CONFIG_ETRAX_SERIAL_PORT0 -+ SETUP_PINS(0); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT1 -+ SETUP_PINS(1); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT2 -+ SETUP_PINS(2); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT3 -+ SETUP_PINS(3); -+#endif -+ } -+} -+ -+static int __init serial_cris_init(void) -+{ -+ int ret, i; -+ reg_ser_rw_rec_ctrl rec_ctrl; -+ printk(KERN_INFO "Serial: CRISv32 driver $Revision: 1.78 $ "); -+ -+ ret = uart_register_driver(&serial_cris_driver); -+ if (ret) -+ goto out; -+ -+ for (i = 0; i < UART_NR; i++) { -+ if (serial_cris_ports[i].used) { -+#ifdef CONFIG_ETRAX_RS485 -+ /* Make sure that the RTS pin stays low when allocating -+ * pins for a port in 485 mode. -+ */ -+ if (serial_cris_ports[i].port_type > TYPE_232) { -+ rec_ctrl = REG_RD(ser, serial_cris_ports[i].regi_ser, rw_rec_ctrl); -+ rec_ctrl.rts_n = regk_ser_active; -+ REG_WR(ser, serial_cris_ports[i].regi_ser, rw_rec_ctrl, rec_ctrl); -+ } -+#endif -+ switch (serial_cris_ports[i].regi_ser) { -+ case regi_ser1: -+ if (crisv32_pinmux_alloc_fixed(pinmux_ser1)) { -+ printk("Failed to allocate pins for ser1, disable port\n"); -+ serial_cris_ports[i].used = 0; -+ continue; -+ } -+ break; -+ case regi_ser2: -+ if (crisv32_pinmux_alloc_fixed(pinmux_ser2)) { -+ printk("Failed to allocate pins for ser2, disable port\n"); -+ serial_cris_ports[i].used = 0; -+ continue; -+ } -+ break; -+ case regi_ser3: -+ if (crisv32_pinmux_alloc_fixed(pinmux_ser3)) { -+ printk("Failed to allocate pins for ser3, disable port\n"); -+ serial_cris_ports[i].used = 0; -+ continue; -+ } -+ break; -+ } -+ -+ struct uart_port *port = &serial_cris_ports[i].port; -+ cris_console.index = i; -+ cris_serial_port_init(port, i); -+ uart_add_one_port(&serial_cris_driver, port); -+ } -+ } -+ -+out: -+ return ret; -+} -+ -+static void __exit serial_cris_exit(void) -+{ -+ int i; -+ for (i = 0; i < UART_NR; i++) -+ if (serial_cris_ports[i].used) { -+ switch (serial_cris_ports[i].regi_ser) { -+ case regi_ser1: -+ crisv32_pinmux_dealloc_fixed(pinmux_ser1); -+ break; -+ case regi_ser2: -+ crisv32_pinmux_dealloc_fixed(pinmux_ser2); -+ break; -+ case regi_ser3: -+ crisv32_pinmux_dealloc_fixed(pinmux_ser3); -+ break; -+ } -+ uart_remove_one_port(&serial_cris_driver, -+ &serial_cris_ports[i].port); -+ } -+ uart_unregister_driver(&serial_cris_driver); -+} -+ -+module_init(serial_cris_init); -+module_exit(serial_cris_exit); ---- linux-2.6.19.2.orig/drivers/usb/host/hc_crisv10.c 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/usb/host/hc-crisv10.c 2007-02-26 20:58:29.000000000 +0100 -@@ -1,219 +1,51 @@ - /* -- * usb-host.c: ETRAX 100LX USB Host Controller Driver (HCD) - * -- * Copyright (c) 2002, 2003 Axis Communications AB. -+ * ETRAX 100LX USB Host Controller Driver -+ * -+ * Copyright (C) 2005, 2006 Axis Communications AB -+ * -+ * Author: Konrad Eriksson <konrad.eriksson@axis.se> -+ * - */ - -+#include <linux/module.h> - #include <linux/kernel.h> --#include <linux/delay.h> --#include <linux/ioport.h> --#include <linux/sched.h> --#include <linux/slab.h> --#include <linux/errno.h> --#include <linux/unistd.h> --#include <linux/interrupt.h> - #include <linux/init.h> --#include <linux/list.h> -+#include <linux/moduleparam.h> - #include <linux/spinlock.h> -+#include <linux/usb.h> -+#include <linux/platform_device.h> - --#include <asm/uaccess.h> - #include <asm/io.h> - #include <asm/irq.h> --#include <asm/dma.h> --#include <asm/system.h> --#include <asm/arch/svinto.h> -+#include <asm/arch/dma.h> -+#include <asm/arch/io_interface_mux.h> - --#include <linux/usb.h> --/* Ugly include because we don't live with the other host drivers. */ --#include <../drivers/usb/core/hcd.h> --#include <../drivers/usb/core/usb.h> -- --#include "hc_crisv10.h" -+#include "../core/hcd.h" -+#include "../core/hub.h" -+#include "hc-crisv10.h" -+#include "hc-cris-dbg.h" -+ -+ -+/***************************************************************************/ -+/***************************************************************************/ -+/* Host Controller settings */ -+/***************************************************************************/ -+/***************************************************************************/ -+ -+#define VERSION "1.00" -+#define COPYRIGHT "(c) 2005, 2006 Axis Communications AB" -+#define DESCRIPTION "ETRAX 100LX USB Host Controller" - - #define ETRAX_USB_HC_IRQ USB_HC_IRQ_NBR - #define ETRAX_USB_RX_IRQ USB_DMA_RX_IRQ_NBR - #define ETRAX_USB_TX_IRQ USB_DMA_TX_IRQ_NBR - --static const char *usb_hcd_version = "$Revision: 1.2 $"; -- --#undef KERN_DEBUG --#define KERN_DEBUG "" -- -- --#undef USB_DEBUG_RH --#undef USB_DEBUG_EPID --#undef USB_DEBUG_SB --#undef USB_DEBUG_DESC --#undef USB_DEBUG_URB --#undef USB_DEBUG_TRACE --#undef USB_DEBUG_BULK --#undef USB_DEBUG_CTRL --#undef USB_DEBUG_INTR --#undef USB_DEBUG_ISOC -- --#ifdef USB_DEBUG_RH --#define dbg_rh(format, arg...) printk(KERN_DEBUG __FILE__ ": (RH) " format "\n" , ## arg) --#else --#define dbg_rh(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_EPID --#define dbg_epid(format, arg...) printk(KERN_DEBUG __FILE__ ": (EPID) " format "\n" , ## arg) --#else --#define dbg_epid(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_SB --#define dbg_sb(format, arg...) printk(KERN_DEBUG __FILE__ ": (SB) " format "\n" , ## arg) --#else --#define dbg_sb(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_CTRL --#define dbg_ctrl(format, arg...) printk(KERN_DEBUG __FILE__ ": (CTRL) " format "\n" , ## arg) --#else --#define dbg_ctrl(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_BULK --#define dbg_bulk(format, arg...) printk(KERN_DEBUG __FILE__ ": (BULK) " format "\n" , ## arg) --#else --#define dbg_bulk(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_INTR --#define dbg_intr(format, arg...) printk(KERN_DEBUG __FILE__ ": (INTR) " format "\n" , ## arg) --#else --#define dbg_intr(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_ISOC --#define dbg_isoc(format, arg...) printk(KERN_DEBUG __FILE__ ": (ISOC) " format "\n" , ## arg) --#else --#define dbg_isoc(format, arg...) do {} while (0) --#endif -- --#ifdef USB_DEBUG_TRACE --#define DBFENTER (printk(": Entering: %s\n", __FUNCTION__)) --#define DBFEXIT (printk(": Exiting: %s\n", __FUNCTION__)) --#else --#define DBFENTER do {} while (0) --#define DBFEXIT do {} while (0) --#endif -- --#define usb_pipeslow(pipe) (((pipe) >> 26) & 1) -- --/*------------------------------------------------------------------- -- Virtual Root Hub -- -------------------------------------------------------------------*/ -- --static __u8 root_hub_dev_des[] = --{ -- 0x12, /* __u8 bLength; */ -- 0x01, /* __u8 bDescriptorType; Device */ -- 0x00, /* __le16 bcdUSB; v1.0 */ -- 0x01, -- 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ -- 0x00, /* __u8 bDeviceSubClass; */ -- 0x00, /* __u8 bDeviceProtocol; */ -- 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */ -- 0x00, /* __le16 idVendor; */ -- 0x00, -- 0x00, /* __le16 idProduct; */ -- 0x00, -- 0x00, /* __le16 bcdDevice; */ -- 0x00, -- 0x00, /* __u8 iManufacturer; */ -- 0x02, /* __u8 iProduct; */ -- 0x01, /* __u8 iSerialNumber; */ -- 0x01 /* __u8 bNumConfigurations; */ --}; -- --/* Configuration descriptor */ --static __u8 root_hub_config_des[] = --{ -- 0x09, /* __u8 bLength; */ -- 0x02, /* __u8 bDescriptorType; Configuration */ -- 0x19, /* __le16 wTotalLength; */ -- 0x00, -- 0x01, /* __u8 bNumInterfaces; */ -- 0x01, /* __u8 bConfigurationValue; */ -- 0x00, /* __u8 iConfiguration; */ -- 0x40, /* __u8 bmAttributes; Bit 7: Bus-powered */ -- 0x00, /* __u8 MaxPower; */ -- -- /* interface */ -- 0x09, /* __u8 if_bLength; */ -- 0x04, /* __u8 if_bDescriptorType; Interface */ -- 0x00, /* __u8 if_bInterfaceNumber; */ -- 0x00, /* __u8 if_bAlternateSetting; */ -- 0x01, /* __u8 if_bNumEndpoints; */ -- 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */ -- 0x00, /* __u8 if_bInterfaceSubClass; */ -- 0x00, /* __u8 if_bInterfaceProtocol; */ -- 0x00, /* __u8 if_iInterface; */ -- -- /* endpoint */ -- 0x07, /* __u8 ep_bLength; */ -- 0x05, /* __u8 ep_bDescriptorType; Endpoint */ -- 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */ -- 0x03, /* __u8 ep_bmAttributes; Interrupt */ -- 0x08, /* __le16 ep_wMaxPacketSize; 8 Bytes */ -- 0x00, -- 0xff /* __u8 ep_bInterval; 255 ms */ --}; -- --static __u8 root_hub_hub_des[] = --{ -- 0x09, /* __u8 bLength; */ -- 0x29, /* __u8 bDescriptorType; Hub-descriptor */ -- 0x02, /* __u8 bNbrPorts; */ -- 0x00, /* __u16 wHubCharacteristics; */ -- 0x00, -- 0x01, /* __u8 bPwrOn2pwrGood; 2ms */ -- 0x00, /* __u8 bHubContrCurrent; 0 mA */ -- 0x00, /* __u8 DeviceRemovable; *** 7 Ports max *** */ -- 0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */ --}; -- --static DEFINE_TIMER(bulk_start_timer, NULL, 0, 0); --static DEFINE_TIMER(bulk_eot_timer, NULL, 0, 0); -- --/* We want the start timer to expire before the eot timer, because the former might start -- traffic, thus making it unnecessary for the latter to time out. */ --#define BULK_START_TIMER_INTERVAL (HZ/10) /* 100 ms */ --#define BULK_EOT_TIMER_INTERVAL (HZ/10+2) /* 120 ms */ -- --#define OK(x) len = (x); dbg_rh("OK(%d): line: %d", x, __LINE__); break --#define CHECK_ALIGN(x) if (((__u32)(x)) & 0x00000003) \ --{panic("Alignment check (DWORD) failed at %s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__);} -- --#define SLAB_FLAG (in_interrupt() ? SLAB_ATOMIC : SLAB_KERNEL) --#define KMALLOC_FLAG (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL) -- --/* Most helpful debugging aid */ --#define assert(expr) ((void) ((expr) ? 0 : (err("assert failed at line %d",__LINE__)))) -- --/* Alternative assert define which stops after a failed assert. */ --/* --#define assert(expr) \ --{ \ -- if (!(expr)) { \ -- err("assert failed at line %d",__LINE__); \ -- while (1); \ -- } \ --} --*/ -- -+/* Number of physical ports in Etrax 100LX */ -+#define USB_ROOT_HUB_PORTS 2 - --/* FIXME: Should RX_BUF_SIZE be a config option, or maybe we should adjust it dynamically? -- To adjust it dynamically we would have to get an interrupt when we reach the end -- of the rx descriptor list, or when we get close to the end, and then allocate more -- descriptors. */ -- --#define NBR_OF_RX_DESC 512 --#define RX_DESC_BUF_SIZE 1024 --#define RX_BUF_SIZE (NBR_OF_RX_DESC * RX_DESC_BUF_SIZE) -+const char hc_name[] = "hc-crisv10"; -+const char product_desc[] = DESCRIPTION; - - /* The number of epids is, among other things, used for pre-allocating - ctrl, bulk and isoc EP descriptors (one for each epid). -@@ -221,4332 +53,4632 @@ - #define NBR_OF_EPIDS 32 - - /* Support interrupt traffic intervals up to 128 ms. */ --#define MAX_INTR_INTERVAL 128 -+#define MAX_INTR_INTERVAL 128 - --/* If periodic traffic (intr or isoc) is to be used, then one entry in the EP table -- must be "invalid". By this we mean that we shouldn't care about epid attentions -- for this epid, or at least handle them differently from epid attentions for "valid" -- epids. This define determines which one to use (don't change it). */ --#define INVALID_EPID 31 -+/* If periodic traffic (intr or isoc) is to be used, then one entry in the EP -+ table must be "invalid". By this we mean that we shouldn't care about epid -+ attentions for this epid, or at least handle them differently from epid -+ attentions for "valid" epids. This define determines which one to use -+ (don't change it). */ -+#define INVALID_EPID 31 - /* A special epid for the bulk dummys. */ --#define DUMMY_EPID 30 -- --/* This is just a software cache for the valid entries in R_USB_EPT_DATA. */ --static __u32 epid_usage_bitmask; -- --/* A bitfield to keep information on in/out traffic is needed to uniquely identify -- an endpoint on a device, since the most significant bit which indicates traffic -- direction is lacking in the ep_id field (ETRAX epids can handle both in and -- out traffic on endpoints that are otherwise identical). The USB framework, however, -- relies on them to be handled separately. For example, bulk IN and OUT urbs cannot -- be queued in the same list, since they would block each other. */ --static __u32 epid_out_traffic; -- --/* DMA IN cache bug. Align the DMA IN buffers to 32 bytes, i.e. a cache line. -- Since RX_DESC_BUF_SIZE is 1024 is a multiple of 32, all rx buffers will be cache aligned. */ --static volatile unsigned char RxBuf[RX_BUF_SIZE] __attribute__ ((aligned (32))); --static volatile USB_IN_Desc_t RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned (4))); -- --/* Pointers into RxDescList. */ --static volatile USB_IN_Desc_t *myNextRxDesc; --static volatile USB_IN_Desc_t *myLastRxDesc; --static volatile USB_IN_Desc_t *myPrevRxDesc; -- --/* EP descriptors must be 32-bit aligned. */ --static volatile USB_EP_Desc_t TxCtrlEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); --static volatile USB_EP_Desc_t TxBulkEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); --/* After each enabled bulk EP (IN or OUT) we put two disabled EP descriptors with the eol flag set, -- causing the DMA to stop the DMA channel. The first of these two has the intr flag set, which -- gives us a dma8_sub0_descr interrupt. When we receive this, we advance the DMA one step in the -- EP list and then restart the bulk channel, thus forcing a switch between bulk EP descriptors -- in each frame. */ --static volatile USB_EP_Desc_t TxBulkDummyEPList[NBR_OF_EPIDS][2] __attribute__ ((aligned (4))); -- --static volatile USB_EP_Desc_t TxIsocEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); --static volatile USB_SB_Desc_t TxIsocSB_zout __attribute__ ((aligned (4))); -- --static volatile USB_EP_Desc_t TxIntrEPList[MAX_INTR_INTERVAL] __attribute__ ((aligned (4))); --static volatile USB_SB_Desc_t TxIntrSB_zout __attribute__ ((aligned (4))); -- --/* A zout transfer makes a memory access at the address of its buf pointer, which means that setting -- this buf pointer to 0 will cause an access to the flash. In addition to this, setting sw_len to 0 -- results in a 16/32 bytes (depending on DMA burst size) transfer. Instead, we set it to 1, and point -- it to this buffer. */ --static int zout_buffer[4] __attribute__ ((aligned (4))); -+#define DUMMY_EPID 30 - --/* Cache for allocating new EP and SB descriptors. */ --static kmem_cache_t *usb_desc_cache; -+/* Module settings */ - --/* Cache for the registers allocated in the top half. */ --static kmem_cache_t *top_half_reg_cache; -+MODULE_DESCRIPTION(DESCRIPTION); -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Konrad Eriksson <konrad.eriksson@axis.se>"); - --/* Cache for the data allocated in the isoc descr top half. */ --static kmem_cache_t *isoc_compl_cache; - --static struct usb_bus *etrax_usb_bus; -+/* Module parameters */ - --/* This is a circular (double-linked) list of the active urbs for each epid. -- The head is never removed, and new urbs are linked onto the list as -- urb_entry_t elements. Don't reference urb_list directly; use the wrapper -- functions instead. Note that working with these lists might require spinlock -- protection. */ --static struct list_head urb_list[NBR_OF_EPIDS]; -+/* 0 = No ports enabled -+ 1 = Only port 1 enabled (on board ethernet on devboard) -+ 2 = Only port 2 enabled (external connector on devboard) -+ 3 = Both ports enabled -+*/ -+static unsigned int ports = 3; -+module_param(ports, uint, S_IRUGO); -+MODULE_PARM_DESC(ports, "Bitmask indicating USB ports to use"); - --/* Read about the need and usage of this lock in submit_ctrl_urb. */ --static spinlock_t urb_list_lock; - --/* Used when unlinking asynchronously. */ --static struct list_head urb_unlink_list; -+/***************************************************************************/ -+/***************************************************************************/ -+/* Shared global variables for this module */ -+/***************************************************************************/ -+/***************************************************************************/ - --/* for returning string descriptors in UTF-16LE */ --static int ascii2utf (char *ascii, __u8 *utf, int utfmax) --{ -- int retval; -+/* EP descriptor lists for non period transfers. Must be 32-bit aligned. */ -+static volatile struct USB_EP_Desc TxBulkEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); - -- for (retval = 0; *ascii && utfmax > 1; utfmax -= 2, retval += 2) { -- *utf++ = *ascii++ & 0x7f; -- *utf++ = 0; -- } -- return retval; --} -+static volatile struct USB_EP_Desc TxCtrlEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); - --static int usb_root_hub_string (int id, int serial, char *type, __u8 *data, int len) --{ -- char buf [30]; -+/* EP descriptor lists for period transfers. Must be 32-bit aligned. */ -+static volatile struct USB_EP_Desc TxIntrEPList[MAX_INTR_INTERVAL] __attribute__ ((aligned (4))); -+static volatile struct USB_SB_Desc TxIntrSB_zout __attribute__ ((aligned (4))); - -- // assert (len > (2 * (sizeof (buf) + 1))); -- // assert (strlen (type) <= 8); -+static volatile struct USB_EP_Desc TxIsocEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); -+static volatile struct USB_SB_Desc TxIsocSB_zout __attribute__ ((aligned (4))); - -- // language ids -- if (id == 0) { -- *data++ = 4; *data++ = 3; /* 4 bytes data */ -- *data++ = 0; *data++ = 0; /* some language id */ -- return 4; -- -- // serial number -- } else if (id == 1) { -- sprintf (buf, "%x", serial); -- -- // product description -- } else if (id == 2) { -- sprintf (buf, "USB %s Root Hub", type); -- -- // id 3 == vendor description -- -- // unsupported IDs --> "stall" -- } else -- return 0; -- -- data [0] = 2 + ascii2utf (buf, data + 2, len - 2); -- data [1] = 3; -- return data [0]; --} -+static volatile struct USB_SB_Desc TxIsocSBList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); - --/* Wrappers around the list functions (include/linux/list.h). */ -+/* After each enabled bulk EP IN we put two disabled EP descriptors with the eol flag set, -+ causing the DMA to stop the DMA channel. The first of these two has the intr flag set, which -+ gives us a dma8_sub0_descr interrupt. When we receive this, we advance the DMA one step in the -+ EP list and then restart the bulk channel, thus forcing a switch between bulk EP descriptors -+ in each frame. */ -+static volatile struct USB_EP_Desc TxBulkDummyEPList[NBR_OF_EPIDS][2] __attribute__ ((aligned (4))); - --static inline int urb_list_empty(int epid) -+/* List of URB pointers, where each points to the active URB for a epid. -+ For Bulk, Ctrl and Intr this means which URB that currently is added to -+ DMA lists (Isoc URBs are all directly added to DMA lists). As soon as -+ URB has completed is the queue examined and the first URB in queue is -+ removed and moved to the activeUrbList while its state change to STARTED and -+ its transfer(s) gets added to DMA list (exception Isoc where URBs enter -+ state STARTED directly and added transfers added to DMA lists). */ -+static struct urb *activeUrbList[NBR_OF_EPIDS]; -+ -+/* Additional software state info for each epid */ -+static struct etrax_epid epid_state[NBR_OF_EPIDS]; -+ -+/* Timer handles for bulk traffic timer used to avoid DMA bug where DMA stops -+ even if there is new data waiting to be processed */ -+static struct timer_list bulk_start_timer = TIMER_INITIALIZER(NULL, 0, 0); -+static struct timer_list bulk_eot_timer = TIMER_INITIALIZER(NULL, 0, 0); -+ -+/* We want the start timer to expire before the eot timer, because the former -+ might start traffic, thus making it unnecessary for the latter to time -+ out. */ -+#define BULK_START_TIMER_INTERVAL (HZ/50) /* 20 ms */ -+#define BULK_EOT_TIMER_INTERVAL (HZ/16) /* 60 ms */ -+ -+/* Delay before a URB completion happen when it's scheduled to be delayed */ -+#define LATER_TIMER_DELAY (HZ/50) /* 20 ms */ -+ -+/* Simplifying macros for checking software state info of a epid */ -+/* ----------------------------------------------------------------------- */ -+#define epid_inuse(epid) epid_state[epid].inuse -+#define epid_out_traffic(epid) epid_state[epid].out_traffic -+#define epid_isoc(epid) (epid_state[epid].type == PIPE_ISOCHRONOUS ? 1 : 0) -+#define epid_intr(epid) (epid_state[epid].type == PIPE_INTERRUPT ? 1 : 0) -+ -+ -+/***************************************************************************/ -+/***************************************************************************/ -+/* DEBUG FUNCTIONS */ -+/***************************************************************************/ -+/***************************************************************************/ -+/* Note that these functions are always available in their "__" variants, -+ for use in error situations. The "__" missing variants are controlled by -+ the USB_DEBUG_DESC/USB_DEBUG_URB macros. */ -+static void __dump_urb(struct urb* purb) - { -- return list_empty(&urb_list[epid]); -+ struct crisv10_urb_priv *urb_priv = purb->hcpriv; -+ int urb_num = -1; -+ if(urb_priv) { -+ urb_num = urb_priv->urb_num; -+ } -+ printk("\nURB:0x%x[%d]\n", (unsigned int)purb, urb_num); -+ printk("dev :0x%08lx\n", (unsigned long)purb->dev); -+ printk("pipe :0x%08x\n", purb->pipe); -+ printk("status :%d\n", purb->status); -+ printk("transfer_flags :0x%08x\n", purb->transfer_flags); -+ printk("transfer_buffer :0x%08lx\n", (unsigned long)purb->transfer_buffer); -+ printk("transfer_buffer_length:%d\n", purb->transfer_buffer_length); -+ printk("actual_length :%d\n", purb->actual_length); -+ printk("setup_packet :0x%08lx\n", (unsigned long)purb->setup_packet); -+ printk("start_frame :%d\n", purb->start_frame); -+ printk("number_of_packets :%d\n", purb->number_of_packets); -+ printk("interval :%d\n", purb->interval); -+ printk("error_count :%d\n", purb->error_count); -+ printk("context :0x%08lx\n", (unsigned long)purb->context); -+ printk("complete :0x%08lx\n\n", (unsigned long)purb->complete); -+} -+ -+static void __dump_in_desc(volatile struct USB_IN_Desc *in) -+{ -+ printk("\nUSB_IN_Desc at 0x%08lx\n", (unsigned long)in); -+ printk(" sw_len : 0x%04x (%d)\n", in->sw_len, in->sw_len); -+ printk(" command : 0x%04x\n", in->command); -+ printk(" next : 0x%08lx\n", in->next); -+ printk(" buf : 0x%08lx\n", in->buf); -+ printk(" hw_len : 0x%04x (%d)\n", in->hw_len, in->hw_len); -+ printk(" status : 0x%04x\n\n", in->status); -+} -+ -+static void __dump_sb_desc(volatile struct USB_SB_Desc *sb) -+{ -+ char tt = (sb->command & 0x30) >> 4; -+ char *tt_string; -+ -+ switch (tt) { -+ case 0: -+ tt_string = "zout"; -+ break; -+ case 1: -+ tt_string = "in"; -+ break; -+ case 2: -+ tt_string = "out"; -+ break; -+ case 3: -+ tt_string = "setup"; -+ break; -+ default: -+ tt_string = "unknown (weird)"; -+ } -+ -+ printk(" USB_SB_Desc at 0x%08lx ", (unsigned long)sb); -+ printk(" command:0x%04x (", sb->command); -+ printk("rem:%d ", (sb->command & 0x3f00) >> 8); -+ printk("full:%d ", (sb->command & 0x40) >> 6); -+ printk("tt:%d(%s) ", tt, tt_string); -+ printk("intr:%d ", (sb->command & 0x8) >> 3); -+ printk("eot:%d ", (sb->command & 0x2) >> 1); -+ printk("eol:%d)", sb->command & 0x1); -+ printk(" sw_len:0x%04x(%d)", sb->sw_len, sb->sw_len); -+ printk(" next:0x%08lx", sb->next); -+ printk(" buf:0x%08lx\n", sb->buf); -+} -+ -+ -+static void __dump_ep_desc(volatile struct USB_EP_Desc *ep) -+{ -+ printk("USB_EP_Desc at 0x%08lx ", (unsigned long)ep); -+ printk(" command:0x%04x (", ep->command); -+ printk("ep_id:%d ", (ep->command & 0x1f00) >> 8); -+ printk("enable:%d ", (ep->command & 0x10) >> 4); -+ printk("intr:%d ", (ep->command & 0x8) >> 3); -+ printk("eof:%d ", (ep->command & 0x2) >> 1); -+ printk("eol:%d)", ep->command & 0x1); -+ printk(" hw_len:0x%04x(%d)", ep->hw_len, ep->hw_len); -+ printk(" next:0x%08lx", ep->next); -+ printk(" sub:0x%08lx\n", ep->sub); - } - --/* Returns first urb for this epid, or NULL if list is empty. */ --static inline struct urb *urb_list_first(int epid) -+static inline void __dump_ep_list(int pipe_type) - { -- struct urb *first_urb = 0; -+ volatile struct USB_EP_Desc *ep; -+ volatile struct USB_EP_Desc *first_ep; -+ volatile struct USB_SB_Desc *sb; -+ -+ switch (pipe_type) -+ { -+ case PIPE_BULK: -+ first_ep = &TxBulkEPList[0]; -+ break; -+ case PIPE_CONTROL: -+ first_ep = &TxCtrlEPList[0]; -+ break; -+ case PIPE_INTERRUPT: -+ first_ep = &TxIntrEPList[0]; -+ break; -+ case PIPE_ISOCHRONOUS: -+ first_ep = &TxIsocEPList[0]; -+ break; -+ default: -+ warn("Cannot dump unknown traffic type"); -+ return; -+ } -+ ep = first_ep; -+ -+ printk("\n\nDumping EP list...\n\n"); -+ -+ do { -+ __dump_ep_desc(ep); -+ /* Cannot phys_to_virt on 0 as it turns into 80000000, which is != 0. */ -+ sb = ep->sub ? phys_to_virt(ep->sub) : 0; -+ while (sb) { -+ __dump_sb_desc(sb); -+ sb = sb->next ? phys_to_virt(sb->next) : 0; -+ } -+ ep = (volatile struct USB_EP_Desc *)(phys_to_virt(ep->next)); - -- if (!urb_list_empty(epid)) { -- /* Get the first urb (i.e. head->next). */ -- urb_entry_t *urb_entry = list_entry((&urb_list[epid])->next, urb_entry_t, list); -- first_urb = urb_entry->urb; -- } -- return first_urb; -+ } while (ep != first_ep); - } - --/* Adds an urb_entry last in the list for this epid. */ --static inline void urb_list_add(struct urb *urb, int epid) -+static inline void __dump_ept_data(int epid) - { -- urb_entry_t *urb_entry = (urb_entry_t *)kmalloc(sizeof(urb_entry_t), KMALLOC_FLAG); -- assert(urb_entry); -+ unsigned long flags; -+ __u32 r_usb_ept_data; - -- urb_entry->urb = urb; -- list_add_tail(&urb_entry->list, &urb_list[epid]); -+ if (epid < 0 || epid > 31) { -+ printk("Cannot dump ept data for invalid epid %d\n", epid); -+ return; -+ } -+ -+ local_irq_save(flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -+ nop(); -+ r_usb_ept_data = *R_USB_EPT_DATA; -+ local_irq_restore(flags); -+ -+ printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", r_usb_ept_data, epid); -+ if (r_usb_ept_data == 0) { -+ /* No need for more detailed printing. */ -+ return; -+ } -+ printk(" valid : %d\n", (r_usb_ept_data & 0x80000000) >> 31); -+ printk(" hold : %d\n", (r_usb_ept_data & 0x40000000) >> 30); -+ printk(" error_count_in : %d\n", (r_usb_ept_data & 0x30000000) >> 28); -+ printk(" t_in : %d\n", (r_usb_ept_data & 0x08000000) >> 27); -+ printk(" low_speed : %d\n", (r_usb_ept_data & 0x04000000) >> 26); -+ printk(" port : %d\n", (r_usb_ept_data & 0x03000000) >> 24); -+ printk(" error_code : %d\n", (r_usb_ept_data & 0x00c00000) >> 22); -+ printk(" t_out : %d\n", (r_usb_ept_data & 0x00200000) >> 21); -+ printk(" error_count_out : %d\n", (r_usb_ept_data & 0x00180000) >> 19); -+ printk(" max_len : %d\n", (r_usb_ept_data & 0x0003f800) >> 11); -+ printk(" ep : %d\n", (r_usb_ept_data & 0x00000780) >> 7); -+ printk(" dev : %d\n", (r_usb_ept_data & 0x0000003f)); -+} -+ -+static inline void __dump_ept_data_iso(int epid) -+{ -+ unsigned long flags; -+ __u32 ept_data; -+ -+ if (epid < 0 || epid > 31) { -+ printk("Cannot dump ept data for invalid epid %d\n", epid); -+ return; -+ } -+ -+ local_irq_save(flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -+ nop(); -+ ept_data = *R_USB_EPT_DATA_ISO; -+ local_irq_restore(flags); -+ -+ printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", ept_data, epid); -+ if (ept_data == 0) { -+ /* No need for more detailed printing. */ -+ return; -+ } -+ printk(" valid : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, valid, -+ ept_data)); -+ printk(" port : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, port, -+ ept_data)); -+ printk(" error_code : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, -+ ept_data)); -+ printk(" max_len : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, max_len, -+ ept_data)); -+ printk(" ep : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, ep, -+ ept_data)); -+ printk(" dev : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, dev, -+ ept_data)); - } - --/* Search through the list for an element that contains this urb. (The list -- is expected to be short and the one we are about to delete will often be -- the first in the list.) */ --static inline urb_entry_t *__urb_list_entry(struct urb *urb, int epid) -+static inline void __dump_ept_data_list(void) - { -- struct list_head *entry; -- struct list_head *tmp; -- urb_entry_t *urb_entry; -- -- list_for_each_safe(entry, tmp, &urb_list[epid]) { -- urb_entry = list_entry(entry, urb_entry_t, list); -- assert(urb_entry); -- assert(urb_entry->urb); -- -- if (urb_entry->urb == urb) { -- return urb_entry; -- } -- } -- return 0; --} -+ int i; - --/* Delete an urb from the list. */ --static inline void urb_list_del(struct urb *urb, int epid) --{ -- urb_entry_t *urb_entry = __urb_list_entry(urb, epid); -- assert(urb_entry); -+ printk("Dumping the whole R_USB_EPT_DATA list\n"); - -- /* Delete entry and free. */ -- list_del(&urb_entry->list); -- kfree(urb_entry); -+ for (i = 0; i < 32; i++) { -+ __dump_ept_data(i); -+ } -+} -+ -+static void debug_epid(int epid) { -+ int i; -+ -+ if(epid_isoc(epid)) { -+ __dump_ept_data_iso(epid); -+ } else { -+ __dump_ept_data(epid); -+ } -+ -+ printk("Bulk:\n"); -+ for(i = 0; i < 32; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxBulkEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxBulkEPList[i])); -+ } -+ } -+ -+ printk("Ctrl:\n"); -+ for(i = 0; i < 32; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxCtrlEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxCtrlEPList[i])); -+ } -+ } -+ -+ printk("Intr:\n"); -+ for(i = 0; i < MAX_INTR_INTERVAL; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxIntrEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxIntrEPList[i])); -+ } -+ } -+ -+ printk("Isoc:\n"); -+ for(i = 0; i < 32; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxIsocEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxIsocEPList[i])); -+ } -+ } -+ -+ __dump_ept_data_list(); -+ __dump_ep_list(PIPE_INTERRUPT); -+ printk("\n\n"); -+} -+ -+ -+ -+char* hcd_status_to_str(__u8 bUsbStatus) { -+ static char hcd_status_str[128]; -+ hcd_status_str[0] = '\0'; -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, ourun, yes)) { -+ strcat(hcd_status_str, "ourun "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, perror, yes)) { -+ strcat(hcd_status_str, "perror "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, device_mode, yes)) { -+ strcat(hcd_status_str, "device_mode "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, host_mode, yes)) { -+ strcat(hcd_status_str, "host_mode "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, started, yes)) { -+ strcat(hcd_status_str, "started "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, running, yes)) { -+ strcat(hcd_status_str, "running "); -+ } -+ return hcd_status_str; -+} -+ -+ -+char* sblist_to_str(struct USB_SB_Desc* sb_desc) { -+ static char sblist_to_str_buff[128]; -+ char tmp[32], tmp2[32]; -+ sblist_to_str_buff[0] = '\0'; -+ while(sb_desc != NULL) { -+ switch(IO_EXTRACT(USB_SB_command, tt, sb_desc->command)) { -+ case 0: sprintf(tmp, "zout"); break; -+ case 1: sprintf(tmp, "in"); break; -+ case 2: sprintf(tmp, "out"); break; -+ case 3: sprintf(tmp, "setup"); break; -+ } -+ sprintf(tmp2, "(%s %d)", tmp, sb_desc->sw_len); -+ strcat(sblist_to_str_buff, tmp2); -+ if(sb_desc->next != 0) { -+ sb_desc = phys_to_virt(sb_desc->next); -+ } else { -+ sb_desc = NULL; -+ } -+ } -+ return sblist_to_str_buff; -+} -+ -+char* port_status_to_str(__u16 wPortStatus) { -+ static char port_status_str[128]; -+ port_status_str[0] = '\0'; -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) { -+ strcat(port_status_str, "connected "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) { -+ strcat(port_status_str, "enabled "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, suspended, yes)) { -+ strcat(port_status_str, "suspended "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, reset, yes)) { -+ strcat(port_status_str, "reset "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, speed, full)) { -+ strcat(port_status_str, "full-speed "); -+ } else { -+ strcat(port_status_str, "low-speed "); -+ } -+ return port_status_str; -+} -+ -+ -+char* endpoint_to_str(struct usb_endpoint_descriptor *ed) { -+ static char endpoint_to_str_buff[128]; -+ char tmp[32]; -+ int epnum = ed->bEndpointAddress & 0x0F; -+ int dir = ed->bEndpointAddress & 0x80; -+ int type = ed->bmAttributes & 0x03; -+ endpoint_to_str_buff[0] = '\0'; -+ sprintf(endpoint_to_str_buff, "ep:%d ", epnum); -+ switch(type) { -+ case 0: -+ sprintf(tmp, " ctrl"); -+ break; -+ case 1: -+ sprintf(tmp, " isoc"); -+ break; -+ case 2: -+ sprintf(tmp, " bulk"); -+ break; -+ case 3: -+ sprintf(tmp, " intr"); -+ break; -+ } -+ strcat(endpoint_to_str_buff, tmp); -+ if(dir) { -+ sprintf(tmp, " in"); -+ } else { -+ sprintf(tmp, " out"); -+ } -+ strcat(endpoint_to_str_buff, tmp); -+ -+ return endpoint_to_str_buff; -+} -+ -+/* Debug helper functions for Transfer Controller */ -+char* pipe_to_str(unsigned int pipe) { -+ static char pipe_to_str_buff[128]; -+ char tmp[64]; -+ sprintf(pipe_to_str_buff, "dir:%s", str_dir(pipe)); -+ sprintf(tmp, " type:%s", str_type(pipe)); -+ strcat(pipe_to_str_buff, tmp); -+ -+ sprintf(tmp, " dev:%d", usb_pipedevice(pipe)); -+ strcat(pipe_to_str_buff, tmp); -+ sprintf(tmp, " ep:%d", usb_pipeendpoint(pipe)); -+ strcat(pipe_to_str_buff, tmp); -+ return pipe_to_str_buff; - } - --/* Move an urb to the end of the list. */ --static inline void urb_list_move_last(struct urb *urb, int epid) --{ -- urb_entry_t *urb_entry = __urb_list_entry(urb, epid); -- assert(urb_entry); -- -- list_move_tail(&urb_entry->list, &urb_list[epid]); --} - --/* Get the next urb in the list. */ --static inline struct urb *urb_list_next(struct urb *urb, int epid) --{ -- urb_entry_t *urb_entry = __urb_list_entry(urb, epid); -+#define USB_DEBUG_DESC 1 - -- assert(urb_entry); -+#ifdef USB_DEBUG_DESC -+#define dump_in_desc(x) __dump_in_desc(x) -+#define dump_sb_desc(...) __dump_sb_desc(...) -+#define dump_ep_desc(x) __dump_ep_desc(x) -+#define dump_ept_data(x) __dump_ept_data(x) -+#else -+#define dump_in_desc(...) do {} while (0) -+#define dump_sb_desc(...) do {} while (0) -+#define dump_ep_desc(...) do {} while (0) -+#endif - -- if (urb_entry->list.next != &urb_list[epid]) { -- struct list_head *elem = urb_entry->list.next; -- urb_entry = list_entry(elem, urb_entry_t, list); -- return urb_entry->urb; -- } else { -- return NULL; -- } --} - -+/* Uncomment this to enable massive function call trace -+ #define USB_DEBUG_TRACE */ - -+#ifdef USB_DEBUG_TRACE -+#define DBFENTER (printk(": Entering: %s\n", __FUNCTION__)) -+#define DBFEXIT (printk(": Exiting: %s\n", __FUNCTION__)) -+#else -+#define DBFENTER do {} while (0) -+#define DBFEXIT do {} while (0) -+#endif - --/* For debug purposes only. */ --static inline void urb_list_dump(int epid) --{ -- struct list_head *entry; -- struct list_head *tmp; -- urb_entry_t *urb_entry; -- int i = 0; -- -- info("Dumping urb list for epid %d", epid); -- -- list_for_each_safe(entry, tmp, &urb_list[epid]) { -- urb_entry = list_entry(entry, urb_entry_t, list); -- info(" entry %d, urb = 0x%lx", i, (unsigned long)urb_entry->urb); -- } --} -+#define CHECK_ALIGN(x) if (((__u32)(x)) & 0x00000003) \ -+{panic("Alignment check (DWORD) failed at %s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__);} - --static void init_rx_buffers(void); --static int etrax_rh_unlink_urb(struct urb *urb); --static void etrax_rh_send_irq(struct urb *urb); --static void etrax_rh_init_int_timer(struct urb *urb); --static void etrax_rh_int_timer_do(unsigned long ptr); -- --static int etrax_usb_setup_epid(struct urb *urb); --static int etrax_usb_lookup_epid(struct urb *urb); --static int etrax_usb_allocate_epid(void); --static void etrax_usb_free_epid(int epid); -- --static int etrax_remove_from_sb_list(struct urb *urb); -- --static void* etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size, -- unsigned mem_flags, dma_addr_t *dma); --static void etrax_usb_buffer_free(struct usb_bus *bus, size_t size, void *addr, dma_addr_t dma); -- --static void etrax_usb_add_to_bulk_sb_list(struct urb *urb, int epid); --static void etrax_usb_add_to_ctrl_sb_list(struct urb *urb, int epid); --static void etrax_usb_add_to_intr_sb_list(struct urb *urb, int epid); --static void etrax_usb_add_to_isoc_sb_list(struct urb *urb, int epid); -- --static int etrax_usb_submit_bulk_urb(struct urb *urb); --static int etrax_usb_submit_ctrl_urb(struct urb *urb); --static int etrax_usb_submit_intr_urb(struct urb *urb); --static int etrax_usb_submit_isoc_urb(struct urb *urb); -- --static int etrax_usb_submit_urb(struct urb *urb, unsigned mem_flags); --static int etrax_usb_unlink_urb(struct urb *urb, int status); --static int etrax_usb_get_frame_number(struct usb_device *usb_dev); -- --static irqreturn_t etrax_usb_tx_interrupt(int irq, void *vhc); --static irqreturn_t etrax_usb_rx_interrupt(int irq, void *vhc); --static irqreturn_t etrax_usb_hc_interrupt_top_half(int irq, void *vhc); --static void etrax_usb_hc_interrupt_bottom_half(void *data); -- --static void etrax_usb_isoc_descr_interrupt_bottom_half(void *data); -- -- --/* The following is a list of interrupt handlers for the host controller interrupts we use. -- They are called from etrax_usb_hc_interrupt_bottom_half. */ --static void etrax_usb_hc_isoc_eof_interrupt(void); --static void etrax_usb_hc_bulk_eot_interrupt(int timer_induced); --static void etrax_usb_hc_epid_attn_interrupt(usb_interrupt_registers_t *reg); --static void etrax_usb_hc_port_status_interrupt(usb_interrupt_registers_t *reg); --static void etrax_usb_hc_ctl_status_interrupt(usb_interrupt_registers_t *reg); -- --static int etrax_rh_submit_urb (struct urb *urb); -- --/* Forward declaration needed because they are used in the rx interrupt routine. */ --static void etrax_usb_complete_urb(struct urb *urb, int status); --static void etrax_usb_complete_bulk_urb(struct urb *urb, int status); --static void etrax_usb_complete_ctrl_urb(struct urb *urb, int status); --static void etrax_usb_complete_intr_urb(struct urb *urb, int status); --static void etrax_usb_complete_isoc_urb(struct urb *urb, int status); -+/* Most helpful debugging aid */ -+#define ASSERT(expr) ((void) ((expr) ? 0 : (err("assert failed at: %s %d",__FUNCTION__, __LINE__)))) - --static int etrax_usb_hc_init(void); --static void etrax_usb_hc_cleanup(void); - --static struct usb_operations etrax_usb_device_operations = --{ -- .get_frame_number = etrax_usb_get_frame_number, -- .submit_urb = etrax_usb_submit_urb, -- .unlink_urb = etrax_usb_unlink_urb, -- .buffer_alloc = etrax_usb_buffer_alloc, -- .buffer_free = etrax_usb_buffer_free --}; -+/***************************************************************************/ -+/***************************************************************************/ -+/* Forward declarations */ -+/***************************************************************************/ -+/***************************************************************************/ -+void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg); -+void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg); -+void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg); -+void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg); -+ -+void rh_port_status_change(__u16[]); -+int rh_clear_port_feature(__u8, __u16); -+int rh_set_port_feature(__u8, __u16); -+static void rh_disable_port(unsigned int port); -+ -+static void check_finished_bulk_tx_epids(struct usb_hcd *hcd, -+ int timer); -+ -+static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb, -+ int mem_flags); -+static void tc_free_epid(struct usb_host_endpoint *ep); -+static int tc_allocate_epid(void); -+static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status); -+static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb, -+ int status); -+ -+static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid, -+ int mem_flags); -+static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb); -+ -+static inline struct urb *urb_list_first(int epid); -+static inline void urb_list_add(struct urb *urb, int epid, -+ int mem_flags); -+static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid); -+static inline void urb_list_del(struct urb *urb, int epid); -+static inline void urb_list_move_last(struct urb *urb, int epid); -+static inline struct urb *urb_list_next(struct urb *urb, int epid); -+ -+int create_sb_for_urb(struct urb *urb, int mem_flags); -+int init_intr_urb(struct urb *urb, int mem_flags); -+ -+static inline void etrax_epid_set(__u8 index, __u32 data); -+static inline void etrax_epid_clear_error(__u8 index); -+static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout, -+ __u8 toggle); -+static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout); -+static inline __u32 etrax_epid_get(__u8 index); -+ -+/* We're accessing the same register position in Etrax so -+ when we do full access the internal difference doesn't matter */ -+#define etrax_epid_iso_set(index, data) etrax_epid_set(index, data) -+#define etrax_epid_iso_get(index) etrax_epid_get(index) -+ -+ -+static void tc_dma_process_isoc_urb(struct urb *urb); -+static void tc_dma_process_queue(int epid); -+static void tc_dma_unlink_intr_urb(struct urb *urb); -+static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc); -+static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc); -+ -+static void tc_bulk_start_timer_func(unsigned long dummy); -+static void tc_bulk_eot_timer_func(unsigned long dummy); -+ -+ -+/*************************************************************/ -+/*************************************************************/ -+/* Host Controler Driver block */ -+/*************************************************************/ -+/*************************************************************/ -+ -+/* HCD operations */ -+static irqreturn_t crisv10_hcd_top_irq(int irq, void*); -+static int crisv10_hcd_reset(struct usb_hcd *); -+static int crisv10_hcd_start(struct usb_hcd *); -+static void crisv10_hcd_stop(struct usb_hcd *); -+#ifdef CONFIG_PM -+static int crisv10_hcd_suspend(struct device *, u32, u32); -+static int crisv10_hcd_resume(struct device *, u32); -+#endif /* CONFIG_PM */ -+static int crisv10_hcd_get_frame(struct usb_hcd *); -+ -+static int tc_urb_enqueue(struct usb_hcd *, struct usb_host_endpoint *ep, struct urb *, gfp_t mem_flags); -+static int tc_urb_dequeue(struct usb_hcd *, struct urb *); -+static void tc_endpoint_disable(struct usb_hcd *, struct usb_host_endpoint *ep); -+ -+static int rh_status_data_request(struct usb_hcd *, char *); -+static int rh_control_request(struct usb_hcd *, u16, u16, u16, char*, u16); -+ -+#ifdef CONFIG_PM -+static int crisv10_hcd_hub_suspend(struct usb_hcd *); -+static int crisv10_hcd_hub_resume(struct usb_hcd *); -+#endif /* CONFIG_PM */ -+#ifdef CONFIG_USB_OTG -+static int crisv10_hcd_start_port_reset(struct usb_hcd *, unsigned); -+#endif /* CONFIG_USB_OTG */ -+ -+/* host controller driver interface */ -+static const struct hc_driver crisv10_hc_driver = -+ { -+ .description = hc_name, -+ .product_desc = product_desc, -+ .hcd_priv_size = sizeof(struct crisv10_hcd), -+ -+ /* Attaching IRQ handler manualy in probe() */ -+ /* .irq = crisv10_hcd_irq, */ -+ -+ .flags = HCD_USB11, -+ -+ /* called to init HCD and root hub */ -+ .reset = crisv10_hcd_reset, -+ .start = crisv10_hcd_start, -+ -+ /* cleanly make HCD stop writing memory and doing I/O */ -+ .stop = crisv10_hcd_stop, -+ -+ /* return current frame number */ -+ .get_frame_number = crisv10_hcd_get_frame, -+ -+ -+ /* Manage i/o requests via the Transfer Controller */ -+ .urb_enqueue = tc_urb_enqueue, -+ .urb_dequeue = tc_urb_dequeue, -+ -+ /* hw synch, freeing endpoint resources that urb_dequeue can't */ -+ .endpoint_disable = tc_endpoint_disable, -+ -+ -+ /* Root Hub support */ -+ .hub_status_data = rh_status_data_request, -+ .hub_control = rh_control_request, -+#ifdef CONFIG_PM -+ .hub_suspend = rh_suspend_request, -+ .hub_resume = rh_resume_request, -+#endif /* CONFIG_PM */ -+#ifdef CONFIG_USB_OTG -+ .start_port_reset = crisv10_hcd_start_port_reset, -+#endif /* CONFIG_USB_OTG */ -+ }; - --/* Note that these functions are always available in their "__" variants, for use in -- error situations. The "__" missing variants are controlled by the USB_DEBUG_DESC/ -- USB_DEBUG_URB macros. */ --static void __dump_urb(struct urb* purb) --{ -- printk("\nurb :0x%08lx\n", (unsigned long)purb); -- printk("dev :0x%08lx\n", (unsigned long)purb->dev); -- printk("pipe :0x%08x\n", purb->pipe); -- printk("status :%d\n", purb->status); -- printk("transfer_flags :0x%08x\n", purb->transfer_flags); -- printk("transfer_buffer :0x%08lx\n", (unsigned long)purb->transfer_buffer); -- printk("transfer_buffer_length:%d\n", purb->transfer_buffer_length); -- printk("actual_length :%d\n", purb->actual_length); -- printk("setup_packet :0x%08lx\n", (unsigned long)purb->setup_packet); -- printk("start_frame :%d\n", purb->start_frame); -- printk("number_of_packets :%d\n", purb->number_of_packets); -- printk("interval :%d\n", purb->interval); -- printk("error_count :%d\n", purb->error_count); -- printk("context :0x%08lx\n", (unsigned long)purb->context); -- printk("complete :0x%08lx\n\n", (unsigned long)purb->complete); --} - --static void __dump_in_desc(volatile USB_IN_Desc_t *in) --{ -- printk("\nUSB_IN_Desc at 0x%08lx\n", (unsigned long)in); -- printk(" sw_len : 0x%04x (%d)\n", in->sw_len, in->sw_len); -- printk(" command : 0x%04x\n", in->command); -- printk(" next : 0x%08lx\n", in->next); -- printk(" buf : 0x%08lx\n", in->buf); -- printk(" hw_len : 0x%04x (%d)\n", in->hw_len, in->hw_len); -- printk(" status : 0x%04x\n\n", in->status); --} -+/* -+ * conversion between pointers to a hcd and the corresponding -+ * crisv10_hcd -+ */ - --static void __dump_sb_desc(volatile USB_SB_Desc_t *sb) -+static inline struct crisv10_hcd *hcd_to_crisv10_hcd(struct usb_hcd *hcd) - { -- char tt = (sb->command & 0x30) >> 4; -- char *tt_string; -- -- switch (tt) { -- case 0: -- tt_string = "zout"; -- break; -- case 1: -- tt_string = "in"; -- break; -- case 2: -- tt_string = "out"; -- break; -- case 3: -- tt_string = "setup"; -- break; -- default: -- tt_string = "unknown (weird)"; -- } -- -- printk("\n USB_SB_Desc at 0x%08lx\n", (unsigned long)sb); -- printk(" command : 0x%04x\n", sb->command); -- printk(" rem : %d\n", (sb->command & 0x3f00) >> 8); -- printk(" full : %d\n", (sb->command & 0x40) >> 6); -- printk(" tt : %d (%s)\n", tt, tt_string); -- printk(" intr : %d\n", (sb->command & 0x8) >> 3); -- printk(" eot : %d\n", (sb->command & 0x2) >> 1); -- printk(" eol : %d\n", sb->command & 0x1); -- printk(" sw_len : 0x%04x (%d)\n", sb->sw_len, sb->sw_len); -- printk(" next : 0x%08lx\n", sb->next); -- printk(" buf : 0x%08lx\n\n", sb->buf); -+ return (struct crisv10_hcd *) hcd->hcd_priv; - } - -- --static void __dump_ep_desc(volatile USB_EP_Desc_t *ep) -+static inline struct usb_hcd *crisv10_hcd_to_hcd(struct crisv10_hcd *hcd) - { -- printk("\nUSB_EP_Desc at 0x%08lx\n", (unsigned long)ep); -- printk(" command : 0x%04x\n", ep->command); -- printk(" ep_id : %d\n", (ep->command & 0x1f00) >> 8); -- printk(" enable : %d\n", (ep->command & 0x10) >> 4); -- printk(" intr : %d\n", (ep->command & 0x8) >> 3); -- printk(" eof : %d\n", (ep->command & 0x2) >> 1); -- printk(" eol : %d\n", ep->command & 0x1); -- printk(" hw_len : 0x%04x (%d)\n", ep->hw_len, ep->hw_len); -- printk(" next : 0x%08lx\n", ep->next); -- printk(" sub : 0x%08lx\n\n", ep->sub); -+ return container_of((void *) hcd, struct usb_hcd, hcd_priv); - } - --static inline void __dump_ep_list(int pipe_type) -+/* check if specified port is in use */ -+static inline int port_in_use(unsigned int port) - { -- volatile USB_EP_Desc_t *ep; -- volatile USB_EP_Desc_t *first_ep; -- volatile USB_SB_Desc_t *sb; -- -- switch (pipe_type) -- { -- case PIPE_BULK: -- first_ep = &TxBulkEPList[0]; -- break; -- case PIPE_CONTROL: -- first_ep = &TxCtrlEPList[0]; -- break; -- case PIPE_INTERRUPT: -- first_ep = &TxIntrEPList[0]; -- break; -- case PIPE_ISOCHRONOUS: -- first_ep = &TxIsocEPList[0]; -- break; -- default: -- warn("Cannot dump unknown traffic type"); -- return; -- } -- ep = first_ep; -- -- printk("\n\nDumping EP list...\n\n"); -- -- do { -- __dump_ep_desc(ep); -- /* Cannot phys_to_virt on 0 as it turns into 80000000, which is != 0. */ -- sb = ep->sub ? phys_to_virt(ep->sub) : 0; -- while (sb) { -- __dump_sb_desc(sb); -- sb = sb->next ? phys_to_virt(sb->next) : 0; -- } -- ep = (volatile USB_EP_Desc_t *)(phys_to_virt(ep->next)); -- -- } while (ep != first_ep); -+ return ports & (1 << port); - } - --static inline void __dump_ept_data(int epid) -+/* number of ports in use */ -+static inline unsigned int num_ports(void) - { -- unsigned long flags; -- __u32 r_usb_ept_data; -- -- if (epid < 0 || epid > 31) { -- printk("Cannot dump ept data for invalid epid %d\n", epid); -- return; -- } -- -- save_flags(flags); -- cli(); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- r_usb_ept_data = *R_USB_EPT_DATA; -- restore_flags(flags); -- -- printk("\nR_USB_EPT_DATA = 0x%x for epid %d :\n", r_usb_ept_data, epid); -- if (r_usb_ept_data == 0) { -- /* No need for more detailed printing. */ -- return; -- } -- printk(" valid : %d\n", (r_usb_ept_data & 0x80000000) >> 31); -- printk(" hold : %d\n", (r_usb_ept_data & 0x40000000) >> 30); -- printk(" error_count_in : %d\n", (r_usb_ept_data & 0x30000000) >> 28); -- printk(" t_in : %d\n", (r_usb_ept_data & 0x08000000) >> 27); -- printk(" low_speed : %d\n", (r_usb_ept_data & 0x04000000) >> 26); -- printk(" port : %d\n", (r_usb_ept_data & 0x03000000) >> 24); -- printk(" error_code : %d\n", (r_usb_ept_data & 0x00c00000) >> 22); -- printk(" t_out : %d\n", (r_usb_ept_data & 0x00200000) >> 21); -- printk(" error_count_out : %d\n", (r_usb_ept_data & 0x00180000) >> 19); -- printk(" max_len : %d\n", (r_usb_ept_data & 0x0003f800) >> 11); -- printk(" ep : %d\n", (r_usb_ept_data & 0x00000780) >> 7); -- printk(" dev : %d\n", (r_usb_ept_data & 0x0000003f)); -+ unsigned int i, num = 0; -+ for (i = 0; i < USB_ROOT_HUB_PORTS; i++) -+ if (port_in_use(i)) -+ num++; -+ return num; - } - --static inline void __dump_ept_data_list(void) -+/* map hub port number to the port number used internally by the HC */ -+static inline unsigned int map_port(unsigned int port) - { -- int i; -- -- printk("Dumping the whole R_USB_EPT_DATA list\n"); -- -- for (i = 0; i < 32; i++) { -- __dump_ept_data(i); -- } -+ unsigned int i, num = 0; -+ for (i = 0; i < USB_ROOT_HUB_PORTS; i++) -+ if (port_in_use(i)) -+ if (++num == port) -+ return i; -+ return -1; - } --#ifdef USB_DEBUG_DESC --#define dump_in_desc(...) __dump_in_desc(...) --#define dump_sb_desc(...) __dump_sb_desc(...) --#define dump_ep_desc(...) __dump_ep_desc(...) --#else --#define dump_in_desc(...) do {} while (0) --#define dump_sb_desc(...) do {} while (0) --#define dump_ep_desc(...) do {} while (0) --#endif - --#ifdef USB_DEBUG_URB --#define dump_urb(x) __dump_urb(x) --#else --#define dump_urb(x) do {} while (0) -+/* size of descriptors in slab cache */ -+#ifndef MAX -+#define MAX(x, y) ((x) > (y) ? (x) : (y)) - #endif - --static void init_rx_buffers(void) --{ -- int i; - -- DBFENTER; -+/******************************************************************/ -+/* Hardware Interrupt functions */ -+/******************************************************************/ -+ -+/* Fast interrupt handler for HC */ -+static irqreturn_t crisv10_hcd_top_irq(int irq, void *vcd) -+{ -+ struct usb_hcd *hcd = vcd; -+ struct crisv10_irq_reg reg; -+ __u32 irq_mask; -+ unsigned long flags; -+ -+ DBFENTER; -+ -+ ASSERT(hcd != NULL); -+ reg.hcd = hcd; -+ -+ /* Turn of other interrupts while handling these sensitive cases */ -+ local_irq_save(flags); -+ -+ /* Read out which interrupts that are flaged */ -+ irq_mask = *R_USB_IRQ_MASK_READ; -+ reg.r_usb_irq_mask_read = irq_mask; -+ -+ /* Reading R_USB_STATUS clears the ctl_status interrupt. Note that -+ R_USB_STATUS must be read before R_USB_EPID_ATTN since reading the latter -+ clears the ourun and perror fields of R_USB_STATUS. */ -+ reg.r_usb_status = *R_USB_STATUS; -+ -+ /* Reading R_USB_EPID_ATTN clears the iso_eof, bulk_eot and epid_attn -+ interrupts. */ -+ reg.r_usb_epid_attn = *R_USB_EPID_ATTN; -+ -+ /* Reading R_USB_RH_PORT_STATUS_1 and R_USB_RH_PORT_STATUS_2 clears the -+ port_status interrupt. */ -+ reg.r_usb_rh_port_status_1 = *R_USB_RH_PORT_STATUS_1; -+ reg.r_usb_rh_port_status_2 = *R_USB_RH_PORT_STATUS_2; -+ -+ /* Reading R_USB_FM_NUMBER clears the sof interrupt. */ -+ /* Note: the lower 11 bits contain the actual frame number, sent with each -+ sof. */ -+ reg.r_usb_fm_number = *R_USB_FM_NUMBER; -+ -+ /* Interrupts are handled in order of priority. */ -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, port_status)) { -+ crisv10_hcd_port_status_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, epid_attn)) { -+ crisv10_hcd_epid_attn_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, ctl_status)) { -+ crisv10_hcd_ctl_status_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, iso_eof)) { -+ crisv10_hcd_isoc_eof_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, bulk_eot)) { -+ /* Update/restart the bulk start timer since obviously the channel is -+ running. */ -+ mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); -+ /* Update/restart the bulk eot timer since we just received an bulk eot -+ interrupt. */ -+ mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -+ -+ /* Check for finished bulk transfers on epids */ -+ check_finished_bulk_tx_epids(hcd, 0); -+ } -+ local_irq_restore(flags); -+ -+ DBFEXIT; -+ return IRQ_HANDLED; -+} -+ -+ -+void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg) { -+ struct usb_hcd *hcd = reg->hcd; -+ struct crisv10_urb_priv *urb_priv; -+ int epid; -+ DBFENTER; -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if (test_bit(epid, (void *)®->r_usb_epid_attn)) { -+ struct urb *urb; -+ __u32 ept_data; -+ int error_code; -+ -+ if (epid == DUMMY_EPID || epid == INVALID_EPID) { -+ /* We definitely don't care about these ones. Besides, they are -+ always disabled, so any possible disabling caused by the -+ epid attention interrupt is irrelevant. */ -+ warn("Got epid_attn for INVALID_EPID or DUMMY_EPID (%d).", epid); -+ continue; -+ } -+ -+ if(!epid_inuse(epid)) { -+ irq_err("Epid attention on epid:%d that isn't in use\n", epid); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ debug_epid(epid); -+ continue; -+ } -+ -+ /* Note that although there are separate R_USB_EPT_DATA and -+ R_USB_EPT_DATA_ISO registers, they are located at the same address and -+ are of the same size. In other words, this read should be ok for isoc -+ also. */ -+ ept_data = etrax_epid_get(epid); -+ error_code = IO_EXTRACT(R_USB_EPT_DATA, error_code, ept_data); -+ -+ /* Get the active URB for this epid. We blatantly assume -+ that only this URB could have caused the epid attention. */ -+ urb = activeUrbList[epid]; -+ if (urb == NULL) { -+ irq_err("Attention on epid:%d error:%d with no active URB.\n", -+ epid, error_code); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ debug_epid(epid); -+ continue; -+ } -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ /* Using IO_STATE_VALUE on R_USB_EPT_DATA should be ok for isoc also. */ -+ if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ -+ /* Isoc traffic doesn't have error_count_in/error_count_out. */ -+ if ((usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) && -+ (IO_EXTRACT(R_USB_EPT_DATA, error_count_in, ept_data) == 3 || -+ IO_EXTRACT(R_USB_EPT_DATA, error_count_out, ept_data) == 3)) { -+ /* Check if URB allready is marked for late-finish, we can get -+ several 3rd error for Intr traffic when a device is unplugged */ -+ if(urb_priv->later_data == NULL) { -+ /* 3rd error. */ -+ irq_warn("3rd error for epid:%d (%s %s) URB:0x%x[%d]\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe), -+ (unsigned int)urb, urb_priv->urb_num); -+ -+ tc_finish_urb_later(hcd, urb, -EPROTO); -+ } -+ -+ } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { -+ irq_warn("Perror for epid:%d\n", epid); -+ printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ __dump_urb(urb); -+ debug_epid(epid); -+ -+ if (!(ept_data & IO_MASK(R_USB_EPT_DATA, valid))) { -+ /* invalid ep_id */ -+ panic("Perror because of invalid epid." -+ " Deconfigured too early?"); -+ } else { -+ /* past eof1, near eof, zout transfer, setup transfer */ -+ /* Dump the urb and the relevant EP descriptor. */ -+ panic("Something wrong with DMA descriptor contents." -+ " Too much traffic inserted?"); -+ } -+ } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { -+ /* buffer ourun */ -+ printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ __dump_urb(urb); -+ debug_epid(epid); - -- for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) { -- RxDescList[i].sw_len = RX_DESC_BUF_SIZE; -- RxDescList[i].command = 0; -- RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]); -- RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); -- RxDescList[i].hw_len = 0; -- RxDescList[i].status = 0; -- -- /* DMA IN cache bug. (struct etrax_dma_descr has the same layout as USB_IN_Desc -- for the relevant fields.) */ -- prepare_rx_descriptor((struct etrax_dma_descr*)&RxDescList[i]); -+ panic("Buffer overrun/underrun for epid:%d. DMA too busy?", epid); -+ } else { -+ irq_warn("Attention on epid:%d (%s %s) with no error code\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe)); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ __dump_urb(urb); -+ debug_epid(epid); -+ } - -+ } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, -+ stall)) { -+ /* Not really a protocol error, just says that the endpoint gave -+ a stall response. Note that error_code cannot be stall for isoc. */ -+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -+ panic("Isoc traffic cannot stall"); - } - -- RxDescList[i].sw_len = RX_DESC_BUF_SIZE; -- RxDescList[i].command = IO_STATE(USB_IN_command, eol, yes); -- RxDescList[i].next = virt_to_phys(&RxDescList[0]); -- RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); -- RxDescList[i].hw_len = 0; -- RxDescList[i].status = 0; -+ tc_dbg("Stall for epid:%d (%s %s) URB:0x%x\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe), (unsigned int)urb); -+ tc_finish_urb(hcd, urb, -EPIPE); -+ -+ } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, -+ bus_error)) { -+ /* Two devices responded to a transaction request. Must be resolved -+ by software. FIXME: Reset ports? */ -+ panic("Bus error for epid %d." -+ " Two devices responded to transaction request\n", -+ epid); -+ -+ } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, -+ buffer_error)) { -+ /* DMA overrun or underrun. */ -+ irq_warn("Buffer overrun/underrun for epid:%d (%s %s)\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe)); -+ -+ /* It seems that error_code = buffer_error in -+ R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS -+ are the same error. */ -+ tc_finish_urb(hcd, urb, -EPROTO); -+ } else { -+ irq_warn("Unknown attention on epid:%d (%s %s)\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe)); -+ dump_ept_data(epid); -+ } -+ } -+ } -+ DBFEXIT; -+} -+ -+void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg) -+{ -+ __u16 port_reg[USB_ROOT_HUB_PORTS]; -+ DBFENTER; -+ port_reg[0] = reg->r_usb_rh_port_status_1; -+ port_reg[1] = reg->r_usb_rh_port_status_2; -+ rh_port_status_change(port_reg); -+ DBFEXIT; -+} -+ -+void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg) -+{ -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv *urb_priv; -+ -+ DBFENTER; -+ -+ for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -+ -+ /* Only check epids that are in use, is valid and has SB list */ -+ if (!epid_inuse(epid) || epid == INVALID_EPID || -+ TxIsocEPList[epid].sub == 0 || epid == DUMMY_EPID) { -+ /* Nothing here to see. */ -+ continue; -+ } -+ ASSERT(epid_isoc(epid)); -+ -+ /* Get the active URB for this epid (if any). */ -+ urb = activeUrbList[epid]; -+ if (urb == 0) { -+ isoc_warn("Ignoring NULL urb for epid:%d\n", epid); -+ continue; -+ } -+ if(!epid_out_traffic(epid)) { -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ if (urb_priv->urb_state == NOT_STARTED) { -+ /* If ASAP is not set and urb->start_frame is the current frame, -+ start the transfer. */ -+ if (!(urb->transfer_flags & URB_ISO_ASAP) && -+ (urb->start_frame == (*R_USB_FM_NUMBER & 0x7ff))) { -+ /* EP should not be enabled if we're waiting for start_frame */ -+ ASSERT((TxIsocEPList[epid].command & -+ IO_STATE(USB_EP_command, enable, yes)) == 0); -+ -+ isoc_warn("Enabling isoc IN EP descr for epid %d\n", epid); -+ TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ -+ /* This urb is now active. */ -+ urb_priv->urb_state = STARTED; -+ continue; -+ } -+ } -+ } -+ } -+ -+ DBFEXIT; -+} -+ -+void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg) -+{ -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(reg->hcd); -+ -+ DBFENTER; -+ ASSERT(crisv10_hcd); -+ -+ irq_dbg("ctr_status_irq, controller status: %s\n", -+ hcd_status_to_str(reg->r_usb_status)); -+ -+ /* FIXME: What should we do if we get ourun or perror? Dump the EP and SB -+ list for the corresponding epid? */ -+ if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { -+ panic("USB controller got ourun."); -+ } -+ if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { -+ -+ /* Before, etrax_usb_do_intr_recover was called on this epid if it was -+ an interrupt pipe. I don't see how re-enabling all EP descriptors -+ will help if there was a programming error. */ -+ panic("USB controller got perror."); -+ } -+ -+ /* Keep track of USB Controller, if it's running or not */ -+ if(reg->r_usb_status & IO_STATE(R_USB_STATUS, running, yes)) { -+ crisv10_hcd->running = 1; -+ } else { -+ crisv10_hcd->running = 0; -+ } -+ -+ if (reg->r_usb_status & IO_MASK(R_USB_STATUS, device_mode)) { -+ /* We should never operate in device mode. */ -+ panic("USB controller in device mode."); -+ } -+ -+ /* Set the flag to avoid getting "Unlink after no-IRQ? Controller is probably -+ using the wrong IRQ" from hcd_unlink_urb() in drivers/usb/core/hcd.c */ -+ set_bit(HCD_FLAG_SAW_IRQ, ®->hcd->flags); -+ -+ DBFEXIT; -+} -+ -+ -+/******************************************************************/ -+/* Host Controller interface functions */ -+/******************************************************************/ -+ -+static inline void crisv10_ready_wait(void) { -+ volatile int timeout = 10000; -+ /* Check the busy bit of USB controller in Etrax */ -+ while((*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for USB controller to be idle\n"); -+ } -+} -+ -+/* reset host controller */ -+static int crisv10_hcd_reset(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ hcd_dbg(hcd, "reset\n"); -+ -+ -+ /* Reset the USB interface. */ -+ /* -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); -+ nop(); -+ */ -+ DBFEXIT; -+ return 0; -+} -+ -+/* start host controller */ -+static int crisv10_hcd_start(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ hcd_dbg(hcd, "start\n"); -+ -+ crisv10_ready_wait(); -+ -+ /* Start processing of USB traffic. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -+ -+ nop(); -+ -+ hcd->state = HC_STATE_RUNNING; -+ -+ DBFEXIT; -+ return 0; -+} -+ -+/* stop host controller */ -+static void crisv10_hcd_stop(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ hcd_dbg(hcd, "stop\n"); -+ crisv10_hcd_reset(hcd); -+ DBFEXIT; -+} -+ -+/* return the current frame number */ -+static int crisv10_hcd_get_frame(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ DBFEXIT; -+ return (*R_USB_FM_NUMBER & 0x7ff); -+} -+ -+#ifdef CONFIG_USB_OTG -+ -+static int crisv10_hcd_start_port_reset(struct usb_hcd *hcd, unsigned port) -+{ -+ return 0; /* no-op for now */ -+} -+ -+#endif /* CONFIG_USB_OTG */ -+ -+ -+/******************************************************************/ -+/* Root Hub functions */ -+/******************************************************************/ -+ -+/* root hub status */ -+static const struct usb_hub_status rh_hub_status = -+ { -+ .wHubStatus = 0, -+ .wHubChange = 0, -+ }; -+ -+/* root hub descriptor */ -+static const u8 rh_hub_descr[] = -+ { -+ 0x09, /* bDescLength */ -+ 0x29, /* bDescriptorType */ -+ USB_ROOT_HUB_PORTS, /* bNbrPorts */ -+ 0x00, /* wHubCharacteristics */ -+ 0x00, -+ 0x01, /* bPwrOn2pwrGood */ -+ 0x00, /* bHubContrCurrent */ -+ 0x00, /* DeviceRemovable */ -+ 0xff /* PortPwrCtrlMask */ -+ }; -+ -+/* Actual holder of root hub status*/ -+struct crisv10_rh rh; -+ -+/* Initialize root hub data structures (called from dvdrv_hcd_probe()) */ -+int rh_init(void) { -+ int i; -+ /* Reset port status flags */ -+ for (i = 0; i < USB_ROOT_HUB_PORTS; i++) { -+ rh.wPortChange[i] = 0; -+ rh.wPortStatusPrev[i] = 0; -+ } -+ return 0; -+} -+ -+#define RH_FEAT_MASK ((1<<USB_PORT_FEAT_CONNECTION)|\ -+ (1<<USB_PORT_FEAT_ENABLE)|\ -+ (1<<USB_PORT_FEAT_SUSPEND)|\ -+ (1<<USB_PORT_FEAT_RESET)) -+ -+/* Handle port status change interrupt (called from bottom part interrupt) */ -+void rh_port_status_change(__u16 port_reg[]) { -+ int i; -+ __u16 wChange; -+ -+ for(i = 0; i < USB_ROOT_HUB_PORTS; i++) { -+ /* Xor out changes since last read, masked for important flags */ -+ wChange = (port_reg[i] & RH_FEAT_MASK) ^ rh.wPortStatusPrev[i]; -+ /* Or changes together with (if any) saved changes */ -+ rh.wPortChange[i] |= wChange; -+ /* Save new status */ -+ rh.wPortStatusPrev[i] = port_reg[i]; -+ -+ if(wChange) { -+ rh_dbg("Interrupt port_status change port%d: %s Current-status:%s\n", i+1, -+ port_status_to_str(wChange), -+ port_status_to_str(port_reg[i])); -+ } -+ } -+} -+ -+/* Construct port status change bitmap for the root hub */ -+static int rh_status_data_request(struct usb_hcd *hcd, char *buf) -+{ -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ unsigned int i; -+ -+ DBFENTER; -+ /* -+ * corresponds to hub status change EP (USB 2.0 spec section 11.13.4) -+ * return bitmap indicating ports with status change -+ */ -+ *buf = 0; -+ spin_lock(&crisv10_hcd->lock); -+ for (i = 1; i <= crisv10_hcd->num_ports; i++) { -+ if (rh.wPortChange[map_port(i)]) { -+ *buf |= (1 << i); -+ rh_dbg("rh_status_data_request, change on port %d: %s Current Status: %s\n", i, -+ port_status_to_str(rh.wPortChange[map_port(i)]), -+ port_status_to_str(rh.wPortStatusPrev[map_port(i)])); -+ } -+ } -+ spin_unlock(&crisv10_hcd->lock); -+ DBFEXIT; -+ return *buf == 0 ? 0 : 1; -+} -+ -+/* Handle a control request for the root hub (called from hcd_driver) */ -+static int rh_control_request(struct usb_hcd *hcd, -+ u16 typeReq, -+ u16 wValue, -+ u16 wIndex, -+ char *buf, -+ u16 wLength) { -+ -+ struct crisv10_hcd *crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ int retval = 0; -+ int len; -+ DBFENTER; -+ -+ switch (typeReq) { -+ case GetHubDescriptor: -+ rh_dbg("GetHubDescriptor\n"); -+ len = min_t(unsigned int, sizeof rh_hub_descr, wLength); -+ memcpy(buf, rh_hub_descr, len); -+ buf[2] = crisv10_hcd->num_ports; -+ break; -+ case GetHubStatus: -+ rh_dbg("GetHubStatus\n"); -+ len = min_t(unsigned int, sizeof rh_hub_status, wLength); -+ memcpy(buf, &rh_hub_status, len); -+ break; -+ case GetPortStatus: -+ if (!wIndex || wIndex > crisv10_hcd->num_ports) -+ goto error; -+ rh_dbg("GetportStatus, port:%d change:%s status:%s\n", wIndex, -+ port_status_to_str(rh.wPortChange[map_port(wIndex)]), -+ port_status_to_str(rh.wPortStatusPrev[map_port(wIndex)])); -+ *(u16 *) buf = cpu_to_le16(rh.wPortStatusPrev[map_port(wIndex)]); -+ *(u16 *) (buf + 2) = cpu_to_le16(rh.wPortChange[map_port(wIndex)]); -+ break; -+ case SetHubFeature: -+ rh_dbg("SetHubFeature\n"); -+ case ClearHubFeature: -+ rh_dbg("ClearHubFeature\n"); -+ switch (wValue) { -+ case C_HUB_OVER_CURRENT: -+ case C_HUB_LOCAL_POWER: -+ rh_warn("Not implemented hub request:%d \n", typeReq); -+ /* not implemented */ -+ break; -+ default: -+ goto error; -+ } -+ break; -+ case SetPortFeature: -+ if (!wIndex || wIndex > crisv10_hcd->num_ports) -+ goto error; -+ if(rh_set_port_feature(map_port(wIndex), wValue)) -+ goto error; -+ break; -+ case ClearPortFeature: -+ if (!wIndex || wIndex > crisv10_hcd->num_ports) -+ goto error; -+ if(rh_clear_port_feature(map_port(wIndex), wValue)) -+ goto error; -+ break; -+ default: -+ rh_warn("Unknown hub request: %d\n", typeReq); -+ error: -+ retval = -EPIPE; -+ } -+ DBFEXIT; -+ return retval; -+} -+ -+int rh_set_port_feature(__u8 bPort, __u16 wFeature) { -+ __u8 bUsbCommand = 0; -+ switch(wFeature) { -+ case USB_PORT_FEAT_RESET: -+ rh_dbg("SetPortFeature: reset\n"); -+ bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, reset); -+ goto set; -+ break; -+ case USB_PORT_FEAT_SUSPEND: -+ rh_dbg("SetPortFeature: suspend\n"); -+ bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, suspend); -+ goto set; -+ break; -+ case USB_PORT_FEAT_POWER: -+ rh_dbg("SetPortFeature: power\n"); -+ break; -+ case USB_PORT_FEAT_C_CONNECTION: -+ rh_dbg("SetPortFeature: c_connection\n"); -+ break; -+ case USB_PORT_FEAT_C_RESET: -+ rh_dbg("SetPortFeature: c_reset\n"); -+ break; -+ case USB_PORT_FEAT_C_OVER_CURRENT: -+ rh_dbg("SetPortFeature: c_over_current\n"); -+ break; -+ -+ set: -+ /* Select which port via the port_sel field */ -+ bUsbCommand |= IO_FIELD(R_USB_COMMAND, port_sel, bPort+1); -+ -+ /* Make sure the controller isn't busy. */ -+ crisv10_ready_wait(); -+ /* Send out the actual command to the USB controller */ -+ *R_USB_COMMAND = bUsbCommand; -+ -+ /* If port reset then also bring USB controller into running state */ -+ if(wFeature == USB_PORT_FEAT_RESET) { -+ /* Wait a while for controller to first become started after port reset */ -+ udelay(12000); /* 12ms blocking wait */ -+ -+ /* Make sure the controller isn't busy. */ -+ crisv10_ready_wait(); -+ -+ /* If all enabled ports were disabled the host controller goes down into -+ started mode, so we need to bring it back into the running state. -+ (This is safe even if it's already in the running state.) */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -+ } -+ -+ break; -+ default: -+ rh_dbg("SetPortFeature: unknown feature\n"); -+ return -1; -+ } -+ return 0; -+} -+ -+int rh_clear_port_feature(__u8 bPort, __u16 wFeature) { -+ switch(wFeature) { -+ case USB_PORT_FEAT_ENABLE: -+ rh_dbg("ClearPortFeature: enable\n"); -+ rh_disable_port(bPort); -+ break; -+ case USB_PORT_FEAT_SUSPEND: -+ rh_dbg("ClearPortFeature: suspend\n"); -+ break; -+ case USB_PORT_FEAT_POWER: -+ rh_dbg("ClearPortFeature: power\n"); -+ break; -+ -+ case USB_PORT_FEAT_C_ENABLE: -+ rh_dbg("ClearPortFeature: c_enable\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_SUSPEND: -+ rh_dbg("ClearPortFeature: c_suspend\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_CONNECTION: -+ rh_dbg("ClearPortFeature: c_connection\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_OVER_CURRENT: -+ rh_dbg("ClearPortFeature: c_over_current\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_RESET: -+ rh_dbg("ClearPortFeature: c_reset\n"); -+ goto clear; -+ clear: -+ rh.wPortChange[bPort] &= ~(1 << (wFeature - 16)); -+ break; -+ default: -+ rh_dbg("ClearPortFeature: unknown feature\n"); -+ return -1; -+ } -+ return 0; -+} -+ -+ -+#ifdef CONFIG_PM -+/* Handle a suspend request for the root hub (called from hcd_driver) */ -+static int rh_suspend_request(struct usb_hcd *hcd) -+{ -+ return 0; /* no-op for now */ -+} -+ -+/* Handle a resume request for the root hub (called from hcd_driver) */ -+static int rh_resume_request(struct usb_hcd *hcd) -+{ -+ return 0; /* no-op for now */ -+} -+#endif /* CONFIG_PM */ -+ -+ -+ -+/* Wrapper function for workaround port disable registers in USB controller */ -+static void rh_disable_port(unsigned int port) { -+ volatile int timeout = 10000; -+ volatile char* usb_portx_disable; -+ switch(port) { -+ case 0: -+ usb_portx_disable = R_USB_PORT1_DISABLE; -+ break; -+ case 1: -+ usb_portx_disable = R_USB_PORT2_DISABLE; -+ break; -+ default: -+ /* Invalid port index */ -+ return; -+ } -+ /* Set disable flag in special register */ -+ *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); -+ /* Wait until not enabled anymore */ -+ while((rh.wPortStatusPrev[port] & -+ IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for port %d to become disabled\n", port); -+ } -+ /* clear disable flag in special register */ -+ *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, no); -+ rh_info("Physical port %d disabled\n", port+1); -+} -+ -+ -+/******************************************************************/ -+/* Transfer Controller (TC) functions */ -+/******************************************************************/ -+ -+/* FIXME: Should RX_BUF_SIZE be a config option, or maybe we should adjust it -+ dynamically? -+ To adjust it dynamically we would have to get an interrupt when we reach -+ the end of the rx descriptor list, or when we get close to the end, and -+ then allocate more descriptors. */ -+#define NBR_OF_RX_DESC 512 -+#define RX_DESC_BUF_SIZE 1024 -+#define RX_BUF_SIZE (NBR_OF_RX_DESC * RX_DESC_BUF_SIZE) - -- myNextRxDesc = &RxDescList[0]; -- myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; -- myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; - -- *R_DMA_CH9_FIRST = virt_to_phys(myNextRxDesc); -- *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, start); -+/* Local variables for Transfer Controller */ -+/* --------------------------------------- */ - -- DBFEXIT; --} -+/* This is a circular (double-linked) list of the active urbs for each epid. -+ The head is never removed, and new urbs are linked onto the list as -+ urb_entry_t elements. Don't reference urb_list directly; use the wrapper -+ functions instead (which includes spin_locks) */ -+static struct list_head urb_list[NBR_OF_EPIDS]; - --static void init_tx_bulk_ep(void) --{ -- int i; -+/* Read about the need and usage of this lock in submit_ctrl_urb. */ -+/* Lock for URB lists for each EPID */ -+static spinlock_t urb_list_lock; - -- DBFENTER; -+/* Lock for EPID array register (R_USB_EPT_x) in Etrax */ -+static spinlock_t etrax_epid_lock; - -- for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -- CHECK_ALIGN(&TxBulkEPList[i]); -- TxBulkEPList[i].hw_len = 0; -- TxBulkEPList[i].command = IO_FIELD(USB_EP_command, epid, i); -- TxBulkEPList[i].sub = 0; -- TxBulkEPList[i].next = virt_to_phys(&TxBulkEPList[i + 1]); -- -- /* Initiate two EPs, disabled and with the eol flag set. No need for any -- preserved epid. */ -- -- /* The first one has the intr flag set so we get an interrupt when the DMA -- channel is about to become disabled. */ -- CHECK_ALIGN(&TxBulkDummyEPList[i][0]); -- TxBulkDummyEPList[i][0].hw_len = 0; -- TxBulkDummyEPList[i][0].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | -- IO_STATE(USB_EP_command, eol, yes) | -- IO_STATE(USB_EP_command, intr, yes)); -- TxBulkDummyEPList[i][0].sub = 0; -- TxBulkDummyEPList[i][0].next = virt_to_phys(&TxBulkDummyEPList[i][1]); -- -- /* The second one. */ -- CHECK_ALIGN(&TxBulkDummyEPList[i][1]); -- TxBulkDummyEPList[i][1].hw_len = 0; -- TxBulkDummyEPList[i][1].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | -- IO_STATE(USB_EP_command, eol, yes)); -- TxBulkDummyEPList[i][1].sub = 0; -- /* The last dummy's next pointer is the same as the current EP's next pointer. */ -- TxBulkDummyEPList[i][1].next = virt_to_phys(&TxBulkEPList[i + 1]); -- } -+/* Lock for dma8 sub0 handling */ -+static spinlock_t etrax_dma8_sub0_lock; - -- /* Configure the last one. */ -- CHECK_ALIGN(&TxBulkEPList[i]); -- TxBulkEPList[i].hw_len = 0; -- TxBulkEPList[i].command = (IO_STATE(USB_EP_command, eol, yes) | -- IO_FIELD(USB_EP_command, epid, i)); -- TxBulkEPList[i].sub = 0; -- TxBulkEPList[i].next = virt_to_phys(&TxBulkEPList[0]); -- -- /* No need configuring dummy EPs for the last one as it will never be used for -- bulk traffic (i == INVALD_EPID at this point). */ -- -- /* Set up to start on the last EP so we will enable it when inserting traffic -- for the first time (imitating the situation where the DMA has stopped -- because there was no more traffic). */ -- *R_DMA_CH8_SUB0_EP = virt_to_phys(&TxBulkEPList[i]); -- /* No point in starting the bulk channel yet. -- *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -- DBFEXIT; --} -+/* DMA IN cache bug. Align the DMA IN buffers to 32 bytes, i.e. a cache line. -+ Since RX_DESC_BUF_SIZE is 1024 is a multiple of 32, all rx buffers will be -+ cache aligned. */ -+static volatile unsigned char RxBuf[RX_BUF_SIZE] __attribute__ ((aligned (32))); -+static volatile struct USB_IN_Desc RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned (4))); - --static void init_tx_ctrl_ep(void) --{ -- int i; -+/* Pointers into RxDescList. */ -+static volatile struct USB_IN_Desc *myNextRxDesc; -+static volatile struct USB_IN_Desc *myLastRxDesc; - -- DBFENTER; -+/* A zout transfer makes a memory access at the address of its buf pointer, -+ which means that setting this buf pointer to 0 will cause an access to the -+ flash. In addition to this, setting sw_len to 0 results in a 16/32 bytes -+ (depending on DMA burst size) transfer. -+ Instead, we set it to 1, and point it to this buffer. */ -+static int zout_buffer[4] __attribute__ ((aligned (4))); - -- for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -- CHECK_ALIGN(&TxCtrlEPList[i]); -- TxCtrlEPList[i].hw_len = 0; -- TxCtrlEPList[i].command = IO_FIELD(USB_EP_command, epid, i); -- TxCtrlEPList[i].sub = 0; -- TxCtrlEPList[i].next = virt_to_phys(&TxCtrlEPList[i + 1]); -- } -+/* Cache for allocating new EP and SB descriptors. */ -+static kmem_cache_t *usb_desc_cache; - -- CHECK_ALIGN(&TxCtrlEPList[i]); -- TxCtrlEPList[i].hw_len = 0; -- TxCtrlEPList[i].command = (IO_STATE(USB_EP_command, eol, yes) | -- IO_FIELD(USB_EP_command, epid, i)); -+/* Cache for the data allocated in the isoc descr top half. */ -+static kmem_cache_t *isoc_compl_cache; - -- TxCtrlEPList[i].sub = 0; -- TxCtrlEPList[i].next = virt_to_phys(&TxCtrlEPList[0]); -+/* Cache for the data allocated when delayed finishing of URBs */ -+static kmem_cache_t *later_data_cache; - -- *R_DMA_CH8_SUB1_EP = virt_to_phys(&TxCtrlEPList[0]); -- *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start); - -- DBFEXIT; -+/* Counter to keep track of how many Isoc EP we have sat up. Used to enable -+ and disable iso_eof interrupt. We only need these interrupts when we have -+ Isoc data endpoints (consumes CPU cycles). -+ FIXME: This could be more fine granular, so this interrupt is only enabled -+ when we have a In Isoc URB not URB_ISO_ASAP flaged queued. */ -+static int isoc_epid_counter; -+ -+/* Protecting wrapper functions for R_USB_EPT_x */ -+/* -------------------------------------------- */ -+static inline void etrax_epid_set(__u8 index, __u32 data) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ *R_USB_EPT_DATA = data; -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+} -+ -+static inline void etrax_epid_clear_error(__u8 index) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ *R_USB_EPT_DATA &= -+ ~(IO_MASK(R_USB_EPT_DATA, error_count_in) | -+ IO_MASK(R_USB_EPT_DATA, error_count_out) | -+ IO_MASK(R_USB_EPT_DATA, error_code)); -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+} -+ -+static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout, -+ __u8 toggle) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ if(dirout) { -+ *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_out); -+ *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_out, toggle); -+ } else { -+ *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_in); -+ *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_in, toggle); -+ } -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+} -+ -+static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout) { -+ unsigned long flags; -+ __u8 toggle; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ if (dirout) { -+ toggle = IO_EXTRACT(R_USB_EPT_DATA, t_out, *R_USB_EPT_DATA); -+ } else { -+ toggle = IO_EXTRACT(R_USB_EPT_DATA, t_in, *R_USB_EPT_DATA); -+ } -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+ return toggle; -+} -+ -+ -+static inline __u32 etrax_epid_get(__u8 index) { -+ unsigned long flags; -+ __u32 data; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ data = *R_USB_EPT_DATA; -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+ return data; -+} -+ -+ -+ -+ -+/* Main functions for Transfer Controller */ -+/* -------------------------------------- */ -+ -+/* Init structs, memories and lists used by Transfer Controller */ -+int tc_init(struct usb_hcd *hcd) { -+ int i; -+ /* Clear software state info for all epids */ -+ memset(epid_state, 0, sizeof(struct etrax_epid) * NBR_OF_EPIDS); -+ -+ /* Set Invalid and Dummy as being in use and disabled */ -+ epid_state[INVALID_EPID].inuse = 1; -+ epid_state[DUMMY_EPID].inuse = 1; -+ epid_state[INVALID_EPID].disabled = 1; -+ epid_state[DUMMY_EPID].disabled = 1; -+ -+ /* Clear counter for how many Isoc epids we have sat up */ -+ isoc_epid_counter = 0; -+ -+ /* Initialize the urb list by initiating a head for each list. -+ Also reset list hodling active URB for each epid */ -+ for (i = 0; i < NBR_OF_EPIDS; i++) { -+ INIT_LIST_HEAD(&urb_list[i]); -+ activeUrbList[i] = NULL; -+ } -+ -+ /* Init lock for URB lists */ -+ spin_lock_init(&urb_list_lock); -+ /* Init lock for Etrax R_USB_EPT register */ -+ spin_lock_init(&etrax_epid_lock); -+ /* Init lock for Etrax dma8 sub0 handling */ -+ spin_lock_init(&etrax_dma8_sub0_lock); -+ -+ /* We use kmem_cache_* to make sure that all DMA desc. are dword aligned */ -+ -+ /* Note that we specify sizeof(struct USB_EP_Desc) as the size, but also -+ allocate SB descriptors from this cache. This is ok since -+ sizeof(struct USB_EP_Desc) == sizeof(struct USB_SB_Desc). */ -+ usb_desc_cache = kmem_cache_create("usb_desc_cache", -+ sizeof(struct USB_EP_Desc), 0, -+ SLAB_HWCACHE_ALIGN, 0, 0); -+ if(usb_desc_cache == NULL) { -+ return -ENOMEM; -+ } -+ -+ /* Create slab cache for speedy allocation of memory for isoc bottom-half -+ interrupt handling */ -+ isoc_compl_cache = -+ kmem_cache_create("isoc_compl_cache", -+ sizeof(struct crisv10_isoc_complete_data), -+ 0, SLAB_HWCACHE_ALIGN, 0, 0); -+ if(isoc_compl_cache == NULL) { -+ return -ENOMEM; -+ } -+ -+ /* Create slab cache for speedy allocation of memory for later URB finish -+ struct */ -+ later_data_cache = -+ kmem_cache_create("later_data_cache", -+ sizeof(struct urb_later_data), -+ 0, SLAB_HWCACHE_ALIGN, 0, 0); -+ if(later_data_cache == NULL) { -+ return -ENOMEM; -+ } -+ -+ -+ /* Initiate the bulk start timer. */ -+ init_timer(&bulk_start_timer); -+ bulk_start_timer.expires = jiffies + BULK_START_TIMER_INTERVAL; -+ bulk_start_timer.function = tc_bulk_start_timer_func; -+ add_timer(&bulk_start_timer); -+ -+ -+ /* Initiate the bulk eot timer. */ -+ init_timer(&bulk_eot_timer); -+ bulk_eot_timer.expires = jiffies + BULK_EOT_TIMER_INTERVAL; -+ bulk_eot_timer.function = tc_bulk_eot_timer_func; -+ bulk_eot_timer.data = (unsigned long)hcd; -+ add_timer(&bulk_eot_timer); -+ -+ return 0; -+} -+ -+/* Uninitialize all resources used by Transfer Controller */ -+void tc_destroy(void) { -+ -+ /* Destroy all slab cache */ -+ kmem_cache_destroy(usb_desc_cache); -+ kmem_cache_destroy(isoc_compl_cache); -+ kmem_cache_destroy(later_data_cache); -+ -+ /* Remove timers */ -+ del_timer(&bulk_start_timer); -+ del_timer(&bulk_eot_timer); -+} -+ -+static void restart_dma8_sub0(void) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_dma8_sub0_lock, flags); -+ /* Verify that the dma is not running */ -+ if ((*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd)) == 0) { -+ struct USB_EP_Desc *ep = (struct USB_EP_Desc *)phys_to_virt(*R_DMA_CH8_SUB0_EP); -+ while (DUMMY_EPID == IO_EXTRACT(USB_EP_command, epid, ep->command)) { -+ ep = (struct USB_EP_Desc *)phys_to_virt(ep->next); -+ } -+ /* Advance the DMA to the next EP descriptor that is not a DUMMY_EPID. -+ * ep->next is already a physical address; no need for a virt_to_phys. */ -+ *R_DMA_CH8_SUB0_EP = ep->next; -+ /* Restart the DMA */ -+ *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); -+ } -+ spin_unlock_irqrestore(&etrax_dma8_sub0_lock, flags); -+} -+ -+/* queue an URB with the transfer controller (called from hcd_driver) */ -+static int tc_urb_enqueue(struct usb_hcd *hcd, -+ struct usb_host_endpoint *ep, -+ struct urb *urb, -+ gfp_t mem_flags) { -+ int epid; -+ int retval; -+ int bustime = 0; -+ int maxpacket; -+ unsigned long flags; -+ struct crisv10_urb_priv *urb_priv; -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ DBFENTER; -+ -+ if(!(crisv10_hcd->running)) { -+ /* The USB Controller is not running, probably because no device is -+ attached. No idea to enqueue URBs then */ -+ tc_warn("Rejected enqueueing of URB:0x%x because no dev attached\n", -+ (unsigned int)urb); -+ return -ENOENT; -+ } -+ -+ maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -+ /* Special case check for In Isoc transfers. Specification states that each -+ In Isoc transfer consists of one packet and therefore it should fit into -+ the transfer-buffer of an URB. -+ We do the check here to be sure (an invalid scenario can be produced with -+ parameters to the usbtest suite) */ -+ if(usb_pipeisoc(urb->pipe) && usb_pipein(urb->pipe) && -+ (urb->transfer_buffer_length < maxpacket)) { -+ tc_err("Submit In Isoc URB with buffer length:%d to pipe with maxpacketlen: %d\n", urb->transfer_buffer_length, maxpacket); -+ return -EMSGSIZE; -+ } -+ -+ /* Check if there is enough bandwidth for periodic transfer */ -+ if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) { -+ /* only check (and later claim) if not already claimed */ -+ if (urb->bandwidth == 0) { -+ bustime = usb_check_bandwidth(urb->dev, urb); -+ if (bustime < 0) { -+ tc_err("Not enough periodic bandwidth\n"); -+ return -ENOSPC; -+ } -+ } -+ } -+ -+ /* Check if there is a epid for URBs destination, if not this function -+ set up one. */ -+ epid = tc_setup_epid(ep, urb, mem_flags); -+ if (epid < 0) { -+ tc_err("Failed setup epid:%d for URB:0x%x\n", epid, (unsigned int)urb); -+ DBFEXIT; -+ return -ENOMEM; -+ } -+ -+ if(urb == activeUrbList[epid]) { -+ tc_err("Resubmition of allready active URB:0x%x\n", (unsigned int)urb); -+ return -ENXIO; -+ } -+ -+ if(urb_list_entry(urb, epid)) { -+ tc_err("Resubmition of allready queued URB:0x%x\n", (unsigned int)urb); -+ return -ENXIO; -+ } -+ -+ /* If we actively have flaged endpoint as disabled then refuse submition */ -+ if(epid_state[epid].disabled) { -+ return -ENOENT; -+ } -+ -+ /* Allocate and init HC-private data for URB */ -+ if(urb_priv_create(hcd, urb, epid, mem_flags) != 0) { -+ DBFEXIT; -+ return -ENOMEM; -+ } -+ urb_priv = urb->hcpriv; -+ -+ tc_dbg("Enqueue URB:0x%x[%d] epid:%d (%s) bufflen:%d\n", -+ (unsigned int)urb, urb_priv->urb_num, epid, -+ pipe_to_str(urb->pipe), urb->transfer_buffer_length); -+ -+ /* Create and link SBs required for this URB */ -+ retval = create_sb_for_urb(urb, mem_flags); -+ if(retval != 0) { -+ tc_err("Failed to create SBs for URB:0x%x[%d]\n", (unsigned int)urb, -+ urb_priv->urb_num); -+ urb_priv_free(hcd, urb); -+ DBFEXIT; -+ return retval; -+ } -+ -+ /* Init intr EP pool if this URB is a INTR transfer. This pool is later -+ used when inserting EPs in the TxIntrEPList. We do the alloc here -+ so we can't run out of memory later */ -+ if(usb_pipeint(urb->pipe)) { -+ retval = init_intr_urb(urb, mem_flags); -+ if(retval != 0) { -+ tc_warn("Failed to init Intr URB\n"); -+ urb_priv_free(hcd, urb); -+ DBFEXIT; -+ return retval; -+ } -+ } -+ -+ /* Disable other access when inserting USB */ -+ local_irq_save(flags); -+ -+ /* Claim bandwidth, if needed */ -+ if(bustime) { -+ usb_claim_bandwidth(urb->dev, urb, bustime, 0); -+ } -+ -+ /* Add URB to EP queue */ -+ urb_list_add(urb, epid, mem_flags); -+ -+ if(usb_pipeisoc(urb->pipe)) { -+ /* Special processing of Isoc URBs. */ -+ tc_dma_process_isoc_urb(urb); -+ } else { -+ /* Process EP queue for rest of the URB types (Bulk, Ctrl, Intr) */ -+ tc_dma_process_queue(epid); -+ } -+ -+ local_irq_restore(flags); -+ -+ DBFEXIT; -+ return 0; -+} -+ -+/* remove an URB from the transfer controller queues (called from hcd_driver)*/ -+static int tc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) { -+ struct crisv10_urb_priv *urb_priv; -+ unsigned long flags; -+ int epid; -+ -+ DBFENTER; -+ /* Disable interrupts here since a descriptor interrupt for the isoc epid -+ will modify the sb list. This could possibly be done more granular, but -+ urb_dequeue should not be used frequently anyway. -+ */ -+ local_irq_save(flags); -+ -+ urb_priv = urb->hcpriv; -+ -+ if (!urb_priv) { -+ /* This happens if a device driver calls unlink on an urb that -+ was never submitted (lazy driver) or if the urb was completed -+ while dequeue was being called. */ -+ tc_warn("Dequeing of not enqueued URB:0x%x\n", (unsigned int)urb); -+ local_irq_restore(flags); -+ return 0; -+ } -+ epid = urb_priv->epid; -+ -+ tc_warn("Dequeing %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", -+ (urb == activeUrbList[epid]) ? "active" : "queued", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), epid, urb->status, -+ (urb_priv->later_data) ? "later-sched" : ""); -+ -+ /* For Bulk, Ctrl and Intr are only one URB active at a time. So any URB -+ that isn't active can be dequeued by just removing it from the queue */ -+ if(usb_pipebulk(urb->pipe) || usb_pipecontrol(urb->pipe) || -+ usb_pipeint(urb->pipe)) { -+ -+ /* Check if URB haven't gone further than the queue */ -+ if(urb != activeUrbList[epid]) { -+ ASSERT(urb_priv->later_data == NULL); -+ tc_warn("Dequeing URB:0x%x[%d] (%s %s epid:%d) from queue" -+ " (not active)\n", (unsigned int)urb, urb_priv->urb_num, -+ str_dir(urb->pipe), str_type(urb->pipe), epid); -+ -+ /* Finish the URB with error status from USB core */ -+ tc_finish_urb(hcd, urb, urb->status); -+ local_irq_restore(flags); -+ return 0; -+ } -+ } -+ -+ /* Set URB status to Unlink for handling when interrupt comes. */ -+ urb_priv->urb_state = UNLINK; -+ -+ /* Differentiate dequeing of Bulk and Ctrl from Isoc and Intr */ -+ switch(usb_pipetype(urb->pipe)) { -+ case PIPE_BULK: -+ /* Check if EP still is enabled */ -+ if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ /* Kicking dummy list out of the party. */ -+ TxBulkEPList[epid].next = virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); -+ break; -+ case PIPE_CONTROL: -+ /* Check if EP still is enabled */ -+ if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ break; -+ case PIPE_ISOCHRONOUS: -+ /* Disabling, busy-wait and unlinking of Isoc SBs will be done in -+ finish_isoc_urb(). Because there might the case when URB is dequeued -+ but there are other valid URBs waiting */ -+ -+ /* Check if In Isoc EP still is enabled */ -+ if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ break; -+ case PIPE_INTERRUPT: -+ /* Special care is taken for interrupt URBs. EPs are unlinked in -+ tc_finish_urb */ -+ break; -+ default: -+ break; -+ } -+ -+ /* Asynchronous unlink, finish the URB later from scheduled or other -+ event (data finished, error) */ -+ tc_finish_urb_later(hcd, urb, urb->status); -+ -+ local_irq_restore(flags); -+ DBFEXIT; -+ return 0; -+} -+ -+ -+static void tc_sync_finish_epid(struct usb_hcd *hcd, int epid) { -+ volatile int timeout = 10000; -+ struct urb* urb; -+ struct crisv10_urb_priv* urb_priv; -+ unsigned long flags; -+ -+ volatile struct USB_EP_Desc *first_ep; /* First EP in the list. */ -+ volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ -+ volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ -+ -+ int type = epid_state[epid].type; -+ -+ /* Setting this flag will cause enqueue() to return -ENOENT for new -+ submitions on this endpoint and finish_urb() wont process queue further */ -+ epid_state[epid].disabled = 1; -+ -+ switch(type) { -+ case PIPE_BULK: -+ /* Check if EP still is enabled */ -+ if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ tc_warn("sync_finish: Disabling EP for epid:%d\n", epid); -+ -+ /* Do busy-wait until DMA not using this EP descriptor anymore */ -+ while((*R_DMA_CH8_SUB0_EP == -+ virt_to_phys(&TxBulkEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Bulk to leave EP for" -+ " epid:%d\n", epid); -+ } -+ } -+ break; -+ -+ case PIPE_CONTROL: -+ /* Check if EP still is enabled */ -+ if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ tc_warn("sync_finish: Disabling EP for epid:%d\n", epid); -+ -+ /* Do busy-wait until DMA not using this EP descriptor anymore */ -+ while((*R_DMA_CH8_SUB1_EP == -+ virt_to_phys(&TxCtrlEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Ctrl to leave EP for" -+ " epid:%d\n", epid); -+ } -+ } -+ break; -+ -+ case PIPE_INTERRUPT: -+ local_irq_save(flags); -+ /* Disable all Intr EPs belonging to epid */ -+ first_ep = &TxIntrEPList[0]; -+ curr_ep = first_ep; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -+ /* Disable EP */ -+ next_ep->command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != first_ep); -+ -+ local_irq_restore(flags); -+ break; -+ -+ case PIPE_ISOCHRONOUS: -+ /* Check if EP still is enabled */ -+ if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ tc_warn("sync_finish: Disabling Isoc EP for epid:%d\n", epid); -+ /* The EP was enabled, disable it. */ -+ TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ -+ while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Isoc to leave EP for" -+ " epid:%d\n", epid); -+ } -+ } -+ break; -+ } -+ -+ local_irq_save(flags); -+ -+ /* Finish if there is active URB for this endpoint */ -+ if(activeUrbList[epid] != NULL) { -+ urb = activeUrbList[epid]; -+ urb_priv = urb->hcpriv; -+ ASSERT(urb_priv); -+ tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", -+ (urb == activeUrbList[epid]) ? "active" : "queued", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), epid, urb->status, -+ (urb_priv->later_data) ? "later-sched" : ""); -+ -+ tc_finish_urb(hcd, activeUrbList[epid], -ENOENT); -+ ASSERT(activeUrbList[epid] == NULL); -+ } -+ -+ /* Finish any queued URBs for this endpoint. There won't be any resubmitions -+ because epid_disabled causes enqueue() to fail for this endpoint */ -+ while((urb = urb_list_first(epid)) != NULL) { -+ urb_priv = urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", -+ (urb == activeUrbList[epid]) ? "active" : "queued", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), epid, urb->status, -+ (urb_priv->later_data) ? "later-sched" : ""); -+ -+ tc_finish_urb(hcd, urb, -ENOENT); -+ } -+ epid_state[epid].disabled = 0; -+ local_irq_restore(flags); -+} -+ -+/* free resources associated with an endpoint (called from hcd_driver) */ -+static void tc_endpoint_disable(struct usb_hcd *hcd, -+ struct usb_host_endpoint *ep) { -+ DBFENTER; -+ /* Only free epid if it has been allocated. We get two endpoint_disable -+ requests for ctrl endpoints so ignore the second one */ -+ if(ep->hcpriv != NULL) { -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ int epid = ep_priv->epid; -+ tc_warn("endpoint_disable ep:0x%x ep-priv:0x%x (%s) (epid:%d freed)\n", -+ (unsigned int)ep, (unsigned int)ep->hcpriv, -+ endpoint_to_str(&(ep->desc)), epid); -+ -+ tc_sync_finish_epid(hcd, epid); -+ -+ ASSERT(activeUrbList[epid] == NULL); -+ ASSERT(list_empty(&urb_list[epid])); -+ -+ tc_free_epid(ep); -+ } else { -+ tc_dbg("endpoint_disable ep:0x%x ep-priv:0x%x (%s)\n", (unsigned int)ep, -+ (unsigned int)ep->hcpriv, endpoint_to_str(&(ep->desc))); -+ } -+ DBFEXIT; -+} -+ -+static void tc_finish_urb_later_proc(void *data) { -+ unsigned long flags; -+ struct urb_later_data* uld = (struct urb_later_data*)data; -+ local_irq_save(flags); -+ if(uld->urb == NULL) { -+ late_dbg("Later finish of URB = NULL (allready finished)\n"); -+ } else { -+ struct crisv10_urb_priv* urb_priv = uld->urb->hcpriv; -+ ASSERT(urb_priv); -+ if(urb_priv->urb_num == uld->urb_num) { -+ late_dbg("Later finish of URB:0x%x[%d]\n", (unsigned int)(uld->urb), -+ urb_priv->urb_num); -+ if(uld->status != uld->urb->status) { -+ errno_dbg("Later-finish URB with status:%d, later-status:%d\n", -+ uld->urb->status, uld->status); -+ } -+ if(uld != urb_priv->later_data) { -+ panic("Scheduled uld not same as URBs uld\n"); -+ } -+ tc_finish_urb(uld->hcd, uld->urb, uld->status); -+ } else { -+ late_warn("Ignoring later finish of URB:0x%x[%d]" -+ ", urb_num doesn't match current URB:0x%x[%d]", -+ (unsigned int)(uld->urb), uld->urb_num, -+ (unsigned int)(uld->urb), urb_priv->urb_num); -+ } -+ } -+ local_irq_restore(flags); -+ kmem_cache_free(later_data_cache, uld); -+} -+ -+static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb, -+ int status) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ struct urb_later_data* uld; -+ -+ ASSERT(urb_priv); -+ -+ if(urb_priv->later_data != NULL) { -+ /* Later-finish allready scheduled for this URB, just update status to -+ return when finishing later */ -+ errno_dbg("Later-finish schedule change URB status:%d with new" -+ " status:%d\n", urb_priv->later_data->status, status); -+ -+ urb_priv->later_data->status = status; -+ return; -+ } -+ -+ uld = kmem_cache_alloc(later_data_cache, SLAB_ATOMIC); -+ ASSERT(uld); -+ -+ uld->hcd = hcd; -+ uld->urb = urb; -+ uld->urb_num = urb_priv->urb_num; -+ uld->status = status; -+ -+ INIT_WORK(&uld->ws, tc_finish_urb_later_proc, uld); -+ urb_priv->later_data = uld; -+ -+ /* Schedule the finishing of the URB to happen later */ -+ schedule_delayed_work(&uld->ws, LATER_TIMER_DELAY); -+} -+ -+static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb, -+ int status); -+ -+static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status) { -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ int epid; -+ char toggle; -+ int urb_num; -+ -+ DBFENTER; -+ ASSERT(urb_priv != NULL); -+ epid = urb_priv->epid; -+ urb_num = urb_priv->urb_num; -+ -+ if(urb != activeUrbList[epid]) { -+ if(urb_list_entry(urb, epid)) { -+ /* Remove this URB from the list. Only happens when URB are finished -+ before having been processed (dequeing) */ -+ urb_list_del(urb, epid); -+ } else { -+ tc_warn("Finishing of URB:0x%x[%d] neither active or in queue for" -+ " epid:%d\n", (unsigned int)urb, urb_num, epid); -+ } -+ } -+ -+ /* Cancel any pending later-finish of this URB */ -+ if(urb_priv->later_data) { -+ urb_priv->later_data->urb = NULL; -+ } -+ -+ /* For an IN pipe, we always set the actual length, regardless of whether -+ there was an error or not (which means the device driver can use the data -+ if it wants to). */ -+ if(usb_pipein(urb->pipe)) { -+ urb->actual_length = urb_priv->rx_offset; -+ } else { -+ /* Set actual_length for OUT urbs also; the USB mass storage driver seems -+ to want that. */ -+ if (status == 0 && urb->status == -EINPROGRESS) { -+ urb->actual_length = urb->transfer_buffer_length; -+ } else { -+ /* We wouldn't know of any partial writes if there was an error. */ -+ urb->actual_length = 0; -+ } -+ } -+ -+ -+ /* URB status mangling */ -+ if(urb->status == -EINPROGRESS) { -+ /* The USB core hasn't changed the status, let's set our finish status */ -+ urb->status = status; -+ -+ if ((status == 0) && (urb->transfer_flags & URB_SHORT_NOT_OK) && -+ usb_pipein(urb->pipe) && -+ (urb->actual_length != urb->transfer_buffer_length)) { -+ /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's -+ max length) is to be treated as an error. */ -+ errno_dbg("Finishing URB:0x%x[%d] with SHORT_NOT_OK flag and short" -+ " data:%d\n", (unsigned int)urb, urb_num, -+ urb->actual_length); -+ urb->status = -EREMOTEIO; -+ } -+ -+ if(urb_priv->urb_state == UNLINK) { -+ /* URB has been requested to be unlinked asynchronously */ -+ urb->status = -ECONNRESET; -+ errno_dbg("Fixing unlink status of URB:0x%x[%d] to:%d\n", -+ (unsigned int)urb, urb_num, urb->status); -+ } -+ } else { -+ /* The USB Core wants to signal some error via the URB, pass it through */ -+ } -+ -+ /* use completely different finish function for Isoc URBs */ -+ if(usb_pipeisoc(urb->pipe)) { -+ tc_finish_isoc_urb(hcd, urb, status); -+ return; -+ } -+ -+ /* Do special unlinking of EPs for Intr traffic */ -+ if(usb_pipeint(urb->pipe)) { -+ tc_dma_unlink_intr_urb(urb); -+ } -+ -+ /* Release allocated bandwidth for periodic transfers */ -+ if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) -+ usb_release_bandwidth(urb->dev, urb, 0); -+ -+ /* This URB is active on EP */ -+ if(urb == activeUrbList[epid]) { -+ /* We need to fiddle with the toggle bits because the hardware doesn't do -+ it for us. */ -+ toggle = etrax_epid_get_toggle(epid, usb_pipeout(urb->pipe)); -+ usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), -+ usb_pipeout(urb->pipe), toggle); -+ -+ /* Checks for Ctrl and Bulk EPs */ -+ switch(usb_pipetype(urb->pipe)) { -+ case PIPE_BULK: -+ /* Check so Bulk EP realy is disabled before finishing active URB */ -+ ASSERT((TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) == -+ IO_STATE(USB_EP_command, enable, no)); -+ /* Disable sub-pointer for EP to avoid next tx_interrupt() to -+ process Bulk EP. */ -+ TxBulkEPList[epid].sub = 0; -+ /* No need to wait for the DMA before changing the next pointer. -+ The modulo NBR_OF_EPIDS isn't actually necessary, since we will never use -+ the last one (INVALID_EPID) for actual traffic. */ -+ TxBulkEPList[epid].next = -+ virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); -+ break; -+ case PIPE_CONTROL: -+ /* Check so Ctrl EP realy is disabled before finishing active URB */ -+ ASSERT((TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) == -+ IO_STATE(USB_EP_command, enable, no)); -+ /* Disable sub-pointer for EP to avoid next tx_interrupt() to -+ process Ctrl EP. */ -+ TxCtrlEPList[epid].sub = 0; -+ break; -+ } -+ } -+ -+ /* Free HC-private URB data*/ -+ urb_priv_free(hcd, urb); -+ -+ if(urb->status) { -+ errno_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n", -+ (unsigned int)urb, urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb->actual_length, urb->status); -+ } else { -+ tc_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n", -+ (unsigned int)urb, urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb->actual_length, urb->status); -+ } -+ -+ /* If we just finished an active URB, clear active pointer. */ -+ if (urb == activeUrbList[epid]) { -+ /* Make URB not active on EP anymore */ -+ activeUrbList[epid] = NULL; -+ -+ if(urb->status == 0) { -+ /* URB finished sucessfully, process queue to see if there are any more -+ URBs waiting before we call completion function.*/ -+ if(crisv10_hcd->running) { -+ /* Only process queue if USB controller is running */ -+ tc_dma_process_queue(epid); -+ } else { -+ tc_warn("No processing of queue for epid:%d, USB Controller not" -+ " running\n", epid); -+ } -+ } -+ } -+ -+ /* Hand the URB from HCD to its USB device driver, using its completion -+ functions */ -+ usb_hcd_giveback_urb (hcd, urb); -+ -+ /* Check the queue once more if the URB returned with error, because we -+ didn't do it before the completion function because the specification -+ states that the queue should not restart until all it's unlinked -+ URBs have been fully retired, with the completion functions run */ -+ if(crisv10_hcd->running) { -+ /* Only process queue if USB controller is running */ -+ tc_dma_process_queue(epid); -+ } else { -+ tc_warn("No processing of queue for epid:%d, USB Controller not running\n", -+ epid); -+ } -+ -+ DBFEXIT; -+} -+ -+static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb, -+ int status) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ int epid, i; -+ volatile int timeout = 10000; -+ -+ ASSERT(urb_priv); -+ epid = urb_priv->epid; -+ -+ ASSERT(usb_pipeisoc(urb->pipe)); -+ -+ /* Set that all isoc packets have status and length set before -+ completing the urb. */ -+ for (i = urb_priv->isoc_packet_counter; i < urb->number_of_packets; i++){ -+ urb->iso_frame_desc[i].actual_length = 0; -+ urb->iso_frame_desc[i].status = -EPROTO; -+ } -+ -+ /* Check if the URB is currently active (done or error) */ -+ if(urb == activeUrbList[epid]) { -+ /* Check if there are another In Isoc URB queued for this epid */ -+ if (!list_empty(&urb_list[epid])&& !epid_state[epid].disabled) { -+ /* Move it from queue to active and mark it started so Isoc transfers -+ won't be interrupted. -+ All Isoc URBs data transfers are already added to DMA lists so we -+ don't have to insert anything in DMA lists here. */ -+ activeUrbList[epid] = urb_list_first(epid); -+ ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_state = -+ STARTED; -+ urb_list_del(activeUrbList[epid], epid); -+ -+ if(urb->status) { -+ errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)" -+ " status:%d, new waiting URB:0x%x[%d]\n", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb_priv->isoc_packet_counter, -+ urb->number_of_packets, urb->status, -+ (unsigned int)activeUrbList[epid], -+ ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_num); -+ } -+ -+ } else { /* No other URB queued for this epid */ -+ if(urb->status) { -+ errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)" -+ " status:%d, no new URB waiting\n", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb_priv->isoc_packet_counter, -+ urb->number_of_packets, urb->status); -+ } -+ -+ /* Check if EP is still enabled, then shut it down. */ -+ if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ isoc_dbg("Isoc EP enabled for epid:%d, disabling it\n", epid); -+ -+ /* Should only occur for In Isoc EPs where SB isn't consumed. */ -+ ASSERT(usb_pipein(urb->pipe)); -+ -+ /* Disable it and wait for it to stop */ -+ TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ -+ /* Ah, the luxury of busy-wait. */ -+ while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Isoc to leave EP for epid:%d\n", epid); -+ } -+ } -+ -+ /* Unlink SB to say that epid is finished. */ -+ TxIsocEPList[epid].sub = 0; -+ TxIsocEPList[epid].hw_len = 0; -+ -+ /* No URB active for EP anymore */ -+ activeUrbList[epid] = NULL; -+ } -+ } else { /* Finishing of not active URB (queued up with SBs thought) */ -+ isoc_warn("finish_isoc_urb (URB:0x%x %s) (%d of %d packets) status:%d," -+ " SB queued but not active\n", -+ (unsigned int)urb, str_dir(urb->pipe), -+ urb_priv->isoc_packet_counter, urb->number_of_packets, -+ urb->status); -+ if(usb_pipeout(urb->pipe)) { -+ /* Finishing of not yet active Out Isoc URB needs unlinking of SBs. */ -+ struct USB_SB_Desc *iter_sb, *prev_sb, *next_sb; -+ -+ iter_sb = TxIsocEPList[epid].sub ? -+ phys_to_virt(TxIsocEPList[epid].sub) : 0; -+ prev_sb = 0; -+ -+ /* SB that is linked before this URBs first SB */ -+ while (iter_sb && (iter_sb != urb_priv->first_sb)) { -+ prev_sb = iter_sb; -+ iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -+ } -+ -+ if (iter_sb == 0) { -+ /* Unlink of the URB currently being transmitted. */ -+ prev_sb = 0; -+ iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0; -+ } -+ -+ while (iter_sb && (iter_sb != urb_priv->last_sb)) { -+ iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -+ } -+ -+ if (iter_sb) { -+ next_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -+ } else { -+ /* This should only happen if the DMA has completed -+ processing the SB list for this EP while interrupts -+ are disabled. */ -+ isoc_dbg("Isoc urb not found, already sent?\n"); -+ next_sb = 0; -+ } -+ if (prev_sb) { -+ prev_sb->next = next_sb ? virt_to_phys(next_sb) : 0; -+ } else { -+ TxIsocEPList[epid].sub = next_sb ? virt_to_phys(next_sb) : 0; -+ } -+ } -+ } -+ -+ /* Free HC-private URB data*/ -+ urb_priv_free(hcd, urb); -+ -+ usb_release_bandwidth(urb->dev, urb, 0); -+ -+ /* Hand the URB from HCD to its USB device driver, using its completion -+ functions */ -+ usb_hcd_giveback_urb (hcd, urb); -+} -+ -+static __u32 urb_num = 0; -+ -+/* allocate and initialize URB private data */ -+static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid, -+ int mem_flags) { -+ struct crisv10_urb_priv *urb_priv; -+ -+ urb_priv = kmalloc(sizeof *urb_priv, mem_flags); -+ if (!urb_priv) -+ return -ENOMEM; -+ memset(urb_priv, 0, sizeof *urb_priv); -+ -+ urb_priv->epid = epid; -+ urb_priv->urb_state = NOT_STARTED; -+ -+ urb->hcpriv = urb_priv; -+ /* Assign URB a sequence number, and increment counter */ -+ urb_priv->urb_num = urb_num; -+ urb_num++; -+ return 0; -+} -+ -+/* free URB private data */ -+static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb) { -+ int i; -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ ASSERT(urb_priv != 0); -+ -+ /* Check it has any SBs linked that needs to be freed*/ -+ if(urb_priv->first_sb != NULL) { -+ struct USB_SB_Desc *next_sb, *first_sb, *last_sb; -+ int i = 0; -+ first_sb = urb_priv->first_sb; -+ last_sb = urb_priv->last_sb; -+ ASSERT(last_sb); -+ while(first_sb != last_sb) { -+ next_sb = (struct USB_SB_Desc *)phys_to_virt(first_sb->next); -+ kmem_cache_free(usb_desc_cache, first_sb); -+ first_sb = next_sb; -+ i++; -+ } -+ kmem_cache_free(usb_desc_cache, last_sb); -+ i++; -+ } -+ -+ /* Check if it has any EPs in its Intr pool that also needs to be freed */ -+ if(urb_priv->intr_ep_pool_length > 0) { -+ for(i = 0; i < urb_priv->intr_ep_pool_length; i++) { -+ kfree(urb_priv->intr_ep_pool[i]); -+ } -+ /* -+ tc_dbg("Freed %d EPs from URB:0x%x EP pool\n", -+ urb_priv->intr_ep_pool_length, (unsigned int)urb); -+ */ -+ } -+ -+ kfree(urb_priv); -+ urb->hcpriv = NULL; -+} -+ -+static int ep_priv_create(struct usb_host_endpoint *ep, int mem_flags) { -+ struct crisv10_ep_priv *ep_priv; -+ -+ ep_priv = kmalloc(sizeof *ep_priv, mem_flags); -+ if (!ep_priv) -+ return -ENOMEM; -+ memset(ep_priv, 0, sizeof *ep_priv); -+ -+ ep->hcpriv = ep_priv; -+ return 0; -+} -+ -+static void ep_priv_free(struct usb_host_endpoint *ep) { -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ ASSERT(ep_priv); -+ kfree(ep_priv); -+ ep->hcpriv = NULL; -+} -+ -+/* EPID handling functions, managing EP-list in Etrax through wrappers */ -+/* ------------------------------------------------------------------- */ -+ -+/* Sets up a new EPID for an endpoint or returns existing if found */ -+static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb, -+ int mem_flags) { -+ int epid; -+ char devnum, endpoint, out_traffic, slow; -+ int maxlen; -+ __u32 epid_data; -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ -+ DBFENTER; -+ -+ /* Check if a valid epid already is setup for this endpoint */ -+ if(ep_priv != NULL) { -+ return ep_priv->epid; -+ } -+ -+ /* We must find and initiate a new epid for this urb. */ -+ epid = tc_allocate_epid(); -+ -+ if (epid == -1) { -+ /* Failed to allocate a new epid. */ -+ DBFEXIT; -+ return epid; -+ } -+ -+ /* We now have a new epid to use. Claim it. */ -+ epid_state[epid].inuse = 1; -+ -+ /* Init private data for new endpoint */ -+ if(ep_priv_create(ep, mem_flags) != 0) { -+ return -ENOMEM; -+ } -+ ep_priv = ep->hcpriv; -+ ep_priv->epid = epid; -+ -+ devnum = usb_pipedevice(urb->pipe); -+ endpoint = usb_pipeendpoint(urb->pipe); -+ slow = (urb->dev->speed == USB_SPEED_LOW); -+ maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -+ -+ if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -+ /* We want both IN and OUT control traffic to be put on the same -+ EP/SB list. */ -+ out_traffic = 1; -+ } else { -+ out_traffic = usb_pipeout(urb->pipe); -+ } -+ -+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -+ epid_data = IO_STATE(R_USB_EPT_DATA_ISO, valid, yes) | -+ /* FIXME: Change any to the actual port? */ -+ IO_STATE(R_USB_EPT_DATA_ISO, port, any) | -+ IO_FIELD(R_USB_EPT_DATA_ISO, max_len, maxlen) | -+ IO_FIELD(R_USB_EPT_DATA_ISO, ep, endpoint) | -+ IO_FIELD(R_USB_EPT_DATA_ISO, dev, devnum); -+ etrax_epid_iso_set(epid, epid_data); -+ } else { -+ epid_data = IO_STATE(R_USB_EPT_DATA, valid, yes) | -+ IO_FIELD(R_USB_EPT_DATA, low_speed, slow) | -+ /* FIXME: Change any to the actual port? */ -+ IO_STATE(R_USB_EPT_DATA, port, any) | -+ IO_FIELD(R_USB_EPT_DATA, max_len, maxlen) | -+ IO_FIELD(R_USB_EPT_DATA, ep, endpoint) | -+ IO_FIELD(R_USB_EPT_DATA, dev, devnum); -+ etrax_epid_set(epid, epid_data); -+ } -+ -+ epid_state[epid].out_traffic = out_traffic; -+ epid_state[epid].type = usb_pipetype(urb->pipe); -+ -+ tc_warn("Setting up ep:0x%x epid:%d (addr:%d endp:%d max_len:%d %s %s %s)\n", -+ (unsigned int)ep, epid, devnum, endpoint, maxlen, -+ str_type(urb->pipe), out_traffic ? "out" : "in", -+ slow ? "low" : "full"); -+ -+ /* Enable Isoc eof interrupt if we set up the first Isoc epid */ -+ if(usb_pipeisoc(urb->pipe)) { -+ isoc_epid_counter++; -+ if(isoc_epid_counter == 1) { -+ isoc_warn("Enabled Isoc eof interrupt\n"); -+ *R_USB_IRQ_MASK_SET |= IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set); -+ } -+ } -+ -+ DBFEXIT; -+ return epid; -+} -+ -+static void tc_free_epid(struct usb_host_endpoint *ep) { -+ unsigned long flags; -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ int epid; -+ volatile int timeout = 10000; -+ -+ DBFENTER; -+ -+ if (ep_priv == NULL) { -+ tc_warn("Trying to free unused epid on ep:0x%x\n", (unsigned int)ep); -+ DBFEXIT; -+ return; -+ } -+ -+ epid = ep_priv->epid; -+ -+ /* Disable Isoc eof interrupt if we free the last Isoc epid */ -+ if(epid_isoc(epid)) { -+ ASSERT(isoc_epid_counter > 0); -+ isoc_epid_counter--; -+ if(isoc_epid_counter == 0) { -+ *R_USB_IRQ_MASK_SET &= ~IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set); -+ isoc_warn("Disabled Isoc eof interrupt\n"); -+ } -+ } -+ -+ /* Take lock manualy instead of in epid_x_x wrappers, -+ because we need to be polling here */ -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -+ nop(); -+ while((*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for epid:%d to drop hold\n", epid); -+ } -+ /* This will, among other things, set the valid field to 0. */ -+ *R_USB_EPT_DATA = 0; -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+ -+ /* Free resource in software state info list */ -+ epid_state[epid].inuse = 0; -+ -+ /* Free private endpoint data */ -+ ep_priv_free(ep); -+ -+ DBFEXIT; -+} -+ -+static int tc_allocate_epid(void) { -+ int i; -+ DBFENTER; -+ for (i = 0; i < NBR_OF_EPIDS; i++) { -+ if (!epid_inuse(i)) { -+ DBFEXIT; -+ return i; -+ } -+ } -+ -+ tc_warn("Found no free epids\n"); -+ DBFEXIT; -+ return -1; - } - - --static void init_tx_intr_ep(void) --{ -- int i; -+/* Wrappers around the list functions (include/linux/list.h). */ -+/* ---------------------------------------------------------- */ -+static inline int __urb_list_empty(int epid) { -+ int retval; -+ retval = list_empty(&urb_list[epid]); -+ return retval; -+} - -- DBFENTER; -+/* Returns first urb for this epid, or NULL if list is empty. */ -+static inline struct urb *urb_list_first(int epid) { -+ unsigned long flags; -+ struct urb *first_urb = 0; -+ spin_lock_irqsave(&urb_list_lock, flags); -+ if (!__urb_list_empty(epid)) { -+ /* Get the first urb (i.e. head->next). */ -+ urb_entry_t *urb_entry = list_entry((&urb_list[epid])->next, urb_entry_t, list); -+ first_urb = urb_entry->urb; -+ } -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return first_urb; -+} - -- /* Read comment at zout_buffer declaration for an explanation to this. */ -- TxIntrSB_zout.sw_len = 1; -- TxIntrSB_zout.next = 0; -- TxIntrSB_zout.buf = virt_to_phys(&zout_buffer[0]); -- TxIntrSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, zout) | -- IO_STATE(USB_SB_command, full, yes) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- for (i = 0; i < (MAX_INTR_INTERVAL - 1); i++) { -- CHECK_ALIGN(&TxIntrEPList[i]); -- TxIntrEPList[i].hw_len = 0; -- TxIntrEPList[i].command = -- (IO_STATE(USB_EP_command, eof, yes) | -- IO_STATE(USB_EP_command, enable, yes) | -- IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -- TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); -- TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[i + 1]); -- } -+/* Adds an urb_entry last in the list for this epid. */ -+static inline void urb_list_add(struct urb *urb, int epid, int mem_flags) { -+ unsigned long flags; -+ urb_entry_t *urb_entry = (urb_entry_t *)kmalloc(sizeof(urb_entry_t), mem_flags); -+ ASSERT(urb_entry); -+ -+ urb_entry->urb = urb; -+ spin_lock_irqsave(&urb_list_lock, flags); -+ list_add_tail(&urb_entry->list, &urb_list[epid]); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+} - -- CHECK_ALIGN(&TxIntrEPList[i]); -- TxIntrEPList[i].hw_len = 0; -- TxIntrEPList[i].command = -- (IO_STATE(USB_EP_command, eof, yes) | -- IO_STATE(USB_EP_command, eol, yes) | -- IO_STATE(USB_EP_command, enable, yes) | -- IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -- TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); -- TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[0]); -- -- *R_DMA_CH8_SUB2_EP = virt_to_phys(&TxIntrEPList[0]); -- *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start); -- DBFEXIT; -+/* Search through the list for an element that contains this urb. (The list -+ is expected to be short and the one we are about to delete will often be -+ the first in the list.) -+ Should be protected by spin_locks in calling function */ -+static inline urb_entry_t *__urb_list_entry(struct urb *urb, int epid) { -+ struct list_head *entry; -+ struct list_head *tmp; -+ urb_entry_t *urb_entry; -+ -+ list_for_each_safe(entry, tmp, &urb_list[epid]) { -+ urb_entry = list_entry(entry, urb_entry_t, list); -+ ASSERT(urb_entry); -+ ASSERT(urb_entry->urb); -+ -+ if (urb_entry->urb == urb) { -+ return urb_entry; -+ } -+ } -+ return 0; -+} -+ -+/* Same function as above but for global use. Protects list by spinlock */ -+static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return (urb_entry); - } - --static void init_tx_isoc_ep(void) --{ -- int i; -+/* Delete an urb from the list. */ -+static inline void urb_list_del(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ -+ /* Delete entry and free. */ -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ ASSERT(urb_entry); -+ -+ list_del(&urb_entry->list); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ kfree(urb_entry); -+} - -- DBFENTER; -+/* Move an urb to the end of the list. */ -+static inline void urb_list_move_last(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ ASSERT(urb_entry); -+ -+ list_del(&urb_entry->list); -+ list_add_tail(&urb_entry->list, &urb_list[epid]); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+} - -- /* Read comment at zout_buffer declaration for an explanation to this. */ -- TxIsocSB_zout.sw_len = 1; -- TxIsocSB_zout.next = 0; -- TxIsocSB_zout.buf = virt_to_phys(&zout_buffer[0]); -- TxIsocSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, zout) | -- IO_STATE(USB_SB_command, full, yes) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- /* The last isochronous EP descriptor is a dummy. */ -- -- for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -- CHECK_ALIGN(&TxIsocEPList[i]); -- TxIsocEPList[i].hw_len = 0; -- TxIsocEPList[i].command = IO_FIELD(USB_EP_command, epid, i); -- TxIsocEPList[i].sub = 0; -- TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[i + 1]); -+/* Get the next urb in the list. */ -+static inline struct urb *urb_list_next(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ ASSERT(urb_entry); -+ -+ if (urb_entry->list.next != &urb_list[epid]) { -+ struct list_head *elem = urb_entry->list.next; -+ urb_entry = list_entry(elem, urb_entry_t, list); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return urb_entry->urb; -+ } else { -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return NULL; -+ } -+} -+ -+struct USB_EP_Desc* create_ep(int epid, struct USB_SB_Desc* sb_desc, -+ int mem_flags) { -+ struct USB_EP_Desc *ep_desc; -+ ep_desc = (struct USB_EP_Desc *) kmem_cache_alloc(usb_desc_cache, mem_flags); -+ if(ep_desc == NULL) -+ return NULL; -+ memset(ep_desc, 0, sizeof(struct USB_EP_Desc)); -+ -+ ep_desc->hw_len = 0; -+ ep_desc->command = (IO_FIELD(USB_EP_command, epid, epid) | -+ IO_STATE(USB_EP_command, enable, yes)); -+ if(sb_desc == NULL) { -+ ep_desc->sub = 0; -+ } else { -+ ep_desc->sub = virt_to_phys(sb_desc); -+ } -+ return ep_desc; -+} -+ -+#define TT_ZOUT 0 -+#define TT_IN 1 -+#define TT_OUT 2 -+#define TT_SETUP 3 -+ -+#define CMD_EOL IO_STATE(USB_SB_command, eol, yes) -+#define CMD_INTR IO_STATE(USB_SB_command, intr, yes) -+#define CMD_FULL IO_STATE(USB_SB_command, full, yes) -+ -+/* Allocation and setup of a generic SB. Used to create SETUP, OUT and ZOUT -+ SBs. Also used by create_sb_in() to avoid same allocation procedure at two -+ places */ -+struct USB_SB_Desc* create_sb(struct USB_SB_Desc* sb_prev, int tt, void* data, -+ int datalen, int mem_flags) { -+ struct USB_SB_Desc *sb_desc; -+ sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags); -+ if(sb_desc == NULL) -+ return NULL; -+ memset(sb_desc, 0, sizeof(struct USB_SB_Desc)); -+ -+ sb_desc->command = IO_FIELD(USB_SB_command, tt, tt) | -+ IO_STATE(USB_SB_command, eot, yes); -+ -+ sb_desc->sw_len = datalen; -+ if(data != NULL) { -+ sb_desc->buf = virt_to_phys(data); -+ } else { -+ sb_desc->buf = 0; -+ } -+ if(sb_prev != NULL) { -+ sb_prev->next = virt_to_phys(sb_desc); -+ } -+ return sb_desc; -+} -+ -+/* Creates a copy of an existing SB by allocation space for it and copy -+ settings */ -+struct USB_SB_Desc* create_sb_copy(struct USB_SB_Desc* sb_orig, int mem_flags) { -+ struct USB_SB_Desc *sb_desc; -+ sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags); -+ if(sb_desc == NULL) -+ return NULL; -+ -+ memcpy(sb_desc, sb_orig, sizeof(struct USB_SB_Desc)); -+ return sb_desc; -+} -+ -+/* A specific create_sb function for creation of in SBs. This is due to -+ that datalen in In SBs shows how many packets we are expecting. It also -+ sets up the rem field to show if how many bytes we expect in last packet -+ if it's not a full one */ -+struct USB_SB_Desc* create_sb_in(struct USB_SB_Desc* sb_prev, int datalen, -+ int maxlen, int mem_flags) { -+ struct USB_SB_Desc *sb_desc; -+ sb_desc = create_sb(sb_prev, TT_IN, NULL, -+ datalen ? (datalen - 1) / maxlen + 1 : 0, mem_flags); -+ if(sb_desc == NULL) -+ return NULL; -+ sb_desc->command |= IO_FIELD(USB_SB_command, rem, datalen % maxlen); -+ return sb_desc; -+} -+ -+void set_sb_cmds(struct USB_SB_Desc *sb_desc, __u16 flags) { -+ sb_desc->command |= flags; -+} -+ -+int create_sb_for_urb(struct urb *urb, int mem_flags) { -+ int is_out = !usb_pipein(urb->pipe); -+ int type = usb_pipetype(urb->pipe); -+ int maxlen = usb_maxpacket(urb->dev, urb->pipe, is_out); -+ int buf_len = urb->transfer_buffer_length; -+ void *buf = buf_len > 0 ? urb->transfer_buffer : NULL; -+ struct USB_SB_Desc *sb_desc = NULL; -+ -+ struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv != NULL); -+ -+ switch(type) { -+ case PIPE_CONTROL: -+ /* Setup stage */ -+ sb_desc = create_sb(NULL, TT_SETUP, urb->setup_packet, 8, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ set_sb_cmds(sb_desc, CMD_FULL); -+ -+ /* Attach first SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ -+ if (is_out) { /* Out Control URB */ -+ /* If this Control OUT transfer has an optional data stage we add -+ an OUT token before the mandatory IN (status) token */ -+ if ((buf_len > 0) && buf) { -+ sb_desc = create_sb(sb_desc, TT_OUT, buf, buf_len, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ -+ /* Status stage */ -+ /* The data length has to be exactly 1. This is due to a requirement -+ of the USB specification that a host must be prepared to receive -+ data in the status phase */ -+ sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ } else { /* In control URB */ -+ /* Data stage */ -+ sb_desc = create_sb_in(sb_desc, buf_len, maxlen, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ -+ /* Status stage */ -+ /* Read comment at zout_buffer declaration for an explanation to this. */ -+ sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ /* Set descriptor interrupt flag for in URBs so we can finish URB after -+ zout-packet has been sent */ -+ set_sb_cmds(sb_desc, CMD_INTR | CMD_FULL); -+ } -+ /* Set end-of-list flag in last SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ /* Attach last SB to URB */ -+ urb_priv->last_sb = sb_desc; -+ break; -+ -+ case PIPE_BULK: -+ if (is_out) { /* Out Bulk URB */ -+ sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ /* The full field is set to yes, even if we don't actually check that -+ this is a full-length transfer (i.e., that transfer_buffer_length % -+ maxlen = 0). -+ Setting full prevents the USB controller from sending an empty packet -+ in that case. However, if URB_ZERO_PACKET was set we want that. */ -+ if (!(urb->transfer_flags & URB_ZERO_PACKET)) { -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ } else { /* In Bulk URB */ -+ sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ } -+ /* Set end-of-list flag for last SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ -+ /* Attach SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ urb_priv->last_sb = sb_desc; -+ break; -+ -+ case PIPE_INTERRUPT: -+ if(is_out) { /* Out Intr URB */ -+ sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ -+ /* The full field is set to yes, even if we don't actually check that -+ this is a full-length transfer (i.e., that transfer_buffer_length % -+ maxlen = 0). -+ Setting full prevents the USB controller from sending an empty packet -+ in that case. However, if URB_ZERO_PACKET was set we want that. */ -+ if (!(urb->transfer_flags & URB_ZERO_PACKET)) { -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ /* Only generate TX interrupt if it's a Out URB*/ -+ set_sb_cmds(sb_desc, CMD_INTR); -+ -+ } else { /* In Intr URB */ -+ sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ } -+ /* Set end-of-list flag for last SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ -+ /* Attach SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ urb_priv->last_sb = sb_desc; -+ -+ break; -+ case PIPE_ISOCHRONOUS: -+ if(is_out) { /* Out Isoc URB */ -+ int i; -+ if(urb->number_of_packets == 0) { -+ tc_err("Can't create SBs for Isoc URB with zero packets\n"); -+ return -EPIPE; -+ } -+ /* Create one SB descriptor for each packet and link them together. */ -+ for(i = 0; i < urb->number_of_packets; i++) { -+ if (urb->iso_frame_desc[i].length > 0) { -+ -+ sb_desc = create_sb(sb_desc, TT_OUT, urb->transfer_buffer + -+ urb->iso_frame_desc[i].offset, -+ urb->iso_frame_desc[i].length, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ -+ /* Check if it's a full length packet */ -+ if (urb->iso_frame_desc[i].length == -+ usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) { -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ -+ } else { /* zero length packet */ -+ sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ /* Attach first SB descriptor to URB */ -+ if (i == 0) { -+ urb_priv->first_sb = sb_desc; -+ } -+ } -+ /* Set interrupt and end-of-list flags in last SB */ -+ set_sb_cmds(sb_desc, CMD_INTR | CMD_EOL); -+ /* Attach last SB descriptor to URB */ -+ urb_priv->last_sb = sb_desc; -+ tc_dbg("Created %d out SBs for Isoc URB:0x%x\n", -+ urb->number_of_packets, (unsigned int)urb); -+ } else { /* In Isoc URB */ -+ /* Actual number of packets is not relevant for periodic in traffic as -+ long as it is more than zero. Set to 1 always. */ -+ sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ /* Set end-of-list flags for SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ -+ /* Attach SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ urb_priv->last_sb = sb_desc; -+ } -+ break; -+ default: -+ tc_err("Unknown pipe-type\n"); -+ return -EPIPE; -+ break; -+ } -+ return 0; -+} -+ -+int init_intr_urb(struct urb *urb, int mem_flags) { -+ struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ struct USB_EP_Desc* ep_desc; -+ int interval; -+ int i; -+ int ep_count; -+ -+ ASSERT(urb_priv != NULL); -+ ASSERT(usb_pipeint(urb->pipe)); -+ /* We can't support interval longer than amount of eof descriptors in -+ TxIntrEPList */ -+ if(urb->interval > MAX_INTR_INTERVAL) { -+ tc_err("Interrupt interval %dms too big (max: %dms)\n", urb->interval, -+ MAX_INTR_INTERVAL); -+ return -EINVAL; -+ } -+ -+ /* We assume that the SB descriptors already have been setup */ -+ ASSERT(urb_priv->first_sb != NULL); -+ -+ /* Round of the interval to 2^n, it is obvious that this code favours -+ smaller numbers, but that is actually a good thing */ -+ /* FIXME: The "rounding error" for larger intervals will be quite -+ large. For in traffic this shouldn't be a problem since it will only -+ mean that we "poll" more often. */ -+ interval = urb->interval; -+ for (i = 0; interval; i++) { -+ interval = interval >> 1; -+ } -+ urb_priv->interval = 1 << (i - 1); -+ -+ /* We can only have max interval for Out Interrupt due to that we can only -+ handle one linked in EP for a certain epid in the Intr descr array at the -+ time. The USB Controller in the Etrax 100LX continues to process Intr EPs -+ so we have no way of knowing which one that caused the actual transfer if -+ we have several linked in. */ -+ if(usb_pipeout(urb->pipe)) { -+ urb_priv->interval = MAX_INTR_INTERVAL; -+ } -+ -+ /* Calculate amount of EPs needed */ -+ ep_count = MAX_INTR_INTERVAL / urb_priv->interval; -+ -+ for(i = 0; i < ep_count; i++) { -+ ep_desc = create_ep(urb_priv->epid, urb_priv->first_sb, mem_flags); -+ if(ep_desc == NULL) { -+ /* Free any descriptors that we may have allocated before failure */ -+ while(i > 0) { -+ i--; -+ kfree(urb_priv->intr_ep_pool[i]); -+ } -+ return -ENOMEM; -+ } -+ urb_priv->intr_ep_pool[i] = ep_desc; -+ } -+ urb_priv->intr_ep_pool_length = ep_count; -+ return 0; -+} -+ -+/* DMA RX/TX functions */ -+/* ----------------------- */ -+ -+static void tc_dma_init_rx_list(void) { -+ int i; -+ -+ /* Setup descriptor list except last one */ -+ for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) { -+ RxDescList[i].sw_len = RX_DESC_BUF_SIZE; -+ RxDescList[i].command = 0; -+ RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]); -+ RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); -+ RxDescList[i].hw_len = 0; -+ RxDescList[i].status = 0; -+ -+ /* DMA IN cache bug. (struct etrax_dma_descr has the same layout as -+ USB_IN_Desc for the relevant fields.) */ -+ prepare_rx_descriptor((struct etrax_dma_descr*)&RxDescList[i]); -+ -+ } -+ /* Special handling of last descriptor */ -+ RxDescList[i].sw_len = RX_DESC_BUF_SIZE; -+ RxDescList[i].command = IO_STATE(USB_IN_command, eol, yes); -+ RxDescList[i].next = virt_to_phys(&RxDescList[0]); -+ RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); -+ RxDescList[i].hw_len = 0; -+ RxDescList[i].status = 0; -+ -+ /* Setup list pointers that show progress in list */ -+ myNextRxDesc = &RxDescList[0]; -+ myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; -+ -+ flush_etrax_cache(); -+ /* Point DMA to first descriptor in list and start it */ -+ *R_DMA_CH9_FIRST = virt_to_phys(myNextRxDesc); -+ *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, start); -+} -+ -+ -+static void tc_dma_init_tx_bulk_list(void) { -+ int i; -+ volatile struct USB_EP_Desc *epDescr; -+ -+ for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -+ epDescr = &(TxBulkEPList[i]); -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxBulkEPList[i + 1]); -+ -+ /* Initiate two EPs, disabled and with the eol flag set. No need for any -+ preserved epid. */ -+ -+ /* The first one has the intr flag set so we get an interrupt when the DMA -+ channel is about to become disabled. */ -+ CHECK_ALIGN(&TxBulkDummyEPList[i][0]); -+ TxBulkDummyEPList[i][0].hw_len = 0; -+ TxBulkDummyEPList[i][0].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | -+ IO_STATE(USB_EP_command, eol, yes) | -+ IO_STATE(USB_EP_command, intr, yes)); -+ TxBulkDummyEPList[i][0].sub = 0; -+ TxBulkDummyEPList[i][0].next = virt_to_phys(&TxBulkDummyEPList[i][1]); -+ -+ /* The second one. */ -+ CHECK_ALIGN(&TxBulkDummyEPList[i][1]); -+ TxBulkDummyEPList[i][1].hw_len = 0; -+ TxBulkDummyEPList[i][1].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | -+ IO_STATE(USB_EP_command, eol, yes)); -+ TxBulkDummyEPList[i][1].sub = 0; -+ /* The last dummy's next pointer is the same as the current EP's next pointer. */ -+ TxBulkDummyEPList[i][1].next = virt_to_phys(&TxBulkEPList[i + 1]); -+ } -+ -+ /* Special handling of last descr in list, make list circular */ -+ epDescr = &TxBulkEPList[i]; -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_STATE(USB_EP_command, eol, yes) | -+ IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxBulkEPList[0]); -+ -+ /* Init DMA sub-channel pointers to last item in each list */ -+ *R_DMA_CH8_SUB0_EP = virt_to_phys(&TxBulkEPList[i]); -+ /* No point in starting the bulk channel yet. -+ *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -+} -+ -+static void tc_dma_init_tx_ctrl_list(void) { -+ int i; -+ volatile struct USB_EP_Desc *epDescr; -+ -+ for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -+ epDescr = &(TxCtrlEPList[i]); -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxCtrlEPList[i + 1]); -+ } -+ /* Special handling of last descr in list, make list circular */ -+ epDescr = &TxCtrlEPList[i]; -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_STATE(USB_EP_command, eol, yes) | -+ IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxCtrlEPList[0]); -+ -+ /* Init DMA sub-channel pointers to last item in each list */ -+ *R_DMA_CH8_SUB1_EP = virt_to_phys(&TxCtrlEPList[i]); -+ /* No point in starting the ctrl channel yet. -+ *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -+} -+ -+ -+static void tc_dma_init_tx_intr_list(void) { -+ int i; -+ -+ TxIntrSB_zout.sw_len = 1; -+ TxIntrSB_zout.next = 0; -+ TxIntrSB_zout.buf = virt_to_phys(&zout_buffer[0]); -+ TxIntrSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | -+ IO_STATE(USB_SB_command, tt, zout) | -+ IO_STATE(USB_SB_command, full, yes) | -+ IO_STATE(USB_SB_command, eot, yes) | -+ IO_STATE(USB_SB_command, eol, yes)); -+ -+ for (i = 0; i < (MAX_INTR_INTERVAL - 1); i++) { -+ CHECK_ALIGN(&TxIntrEPList[i]); -+ TxIntrEPList[i].hw_len = 0; -+ TxIntrEPList[i].command = -+ (IO_STATE(USB_EP_command, eof, yes) | -+ IO_STATE(USB_EP_command, enable, yes) | -+ IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -+ TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); -+ TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[i + 1]); -+ } -+ -+ /* Special handling of last descr in list, make list circular */ -+ CHECK_ALIGN(&TxIntrEPList[i]); -+ TxIntrEPList[i].hw_len = 0; -+ TxIntrEPList[i].command = -+ (IO_STATE(USB_EP_command, eof, yes) | -+ IO_STATE(USB_EP_command, eol, yes) | -+ IO_STATE(USB_EP_command, enable, yes) | -+ IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -+ TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); -+ TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[0]); -+ -+ intr_dbg("Initiated Intr EP descriptor list\n"); -+ -+ -+ /* Connect DMA 8 sub-channel 2 to first in list */ -+ *R_DMA_CH8_SUB2_EP = virt_to_phys(&TxIntrEPList[0]); -+} -+ -+static void tc_dma_init_tx_isoc_list(void) { -+ int i; -+ -+ DBFENTER; -+ -+ /* Read comment at zout_buffer declaration for an explanation to this. */ -+ TxIsocSB_zout.sw_len = 1; -+ TxIsocSB_zout.next = 0; -+ TxIsocSB_zout.buf = virt_to_phys(&zout_buffer[0]); -+ TxIsocSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | -+ IO_STATE(USB_SB_command, tt, zout) | -+ IO_STATE(USB_SB_command, full, yes) | -+ IO_STATE(USB_SB_command, eot, yes) | -+ IO_STATE(USB_SB_command, eol, yes)); -+ -+ /* The last isochronous EP descriptor is a dummy. */ -+ for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -+ CHECK_ALIGN(&TxIsocEPList[i]); -+ TxIsocEPList[i].hw_len = 0; -+ TxIsocEPList[i].command = IO_FIELD(USB_EP_command, epid, i); -+ TxIsocEPList[i].sub = 0; -+ TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[i + 1]); -+ } -+ -+ CHECK_ALIGN(&TxIsocEPList[i]); -+ TxIsocEPList[i].hw_len = 0; -+ -+ /* Must enable the last EP descr to get eof interrupt. */ -+ TxIsocEPList[i].command = (IO_STATE(USB_EP_command, enable, yes) | -+ IO_STATE(USB_EP_command, eof, yes) | -+ IO_STATE(USB_EP_command, eol, yes) | -+ IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -+ TxIsocEPList[i].sub = virt_to_phys(&TxIsocSB_zout); -+ TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[0]); -+ -+ *R_DMA_CH8_SUB3_EP = virt_to_phys(&TxIsocEPList[0]); -+ *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -+} -+ -+static int tc_dma_init(struct usb_hcd *hcd) { -+ tc_dma_init_rx_list(); -+ tc_dma_init_tx_bulk_list(); -+ tc_dma_init_tx_ctrl_list(); -+ tc_dma_init_tx_intr_list(); -+ tc_dma_init_tx_isoc_list(); -+ -+ if (cris_request_dma(USB_TX_DMA_NBR, -+ "ETRAX 100LX built-in USB (Tx)", -+ DMA_VERBOSE_ON_ERROR, -+ dma_usb)) { -+ err("Could not allocate DMA ch 8 for USB"); -+ return -EBUSY; -+ } -+ -+ if (cris_request_dma(USB_RX_DMA_NBR, -+ "ETRAX 100LX built-in USB (Rx)", -+ DMA_VERBOSE_ON_ERROR, -+ dma_usb)) { -+ err("Could not allocate DMA ch 9 for USB"); -+ return -EBUSY; -+ } -+ -+ *R_IRQ_MASK2_SET = -+ /* Note that these interrupts are not used. */ -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub0_descr, set) | -+ /* Sub channel 1 (ctrl) descr. interrupts are used. */ -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub1_descr, set) | -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub2_descr, set) | -+ /* Sub channel 3 (isoc) descr. interrupts are used. */ -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub3_descr, set); -+ -+ /* Note that the dma9_descr interrupt is not used. */ -+ *R_IRQ_MASK2_SET = -+ IO_STATE(R_IRQ_MASK2_SET, dma9_eop, set) | -+ IO_STATE(R_IRQ_MASK2_SET, dma9_descr, set); -+ -+ if (request_irq(ETRAX_USB_RX_IRQ, tc_dma_rx_interrupt, 0, -+ "ETRAX 100LX built-in USB (Rx)", hcd)) { -+ err("Could not allocate IRQ %d for USB", ETRAX_USB_RX_IRQ); -+ return -EBUSY; -+ } -+ -+ if (request_irq(ETRAX_USB_TX_IRQ, tc_dma_tx_interrupt, 0, -+ "ETRAX 100LX built-in USB (Tx)", hcd)) { -+ err("Could not allocate IRQ %d for USB", ETRAX_USB_TX_IRQ); -+ return -EBUSY; -+ } -+ -+ return 0; -+} -+ -+static void tc_dma_destroy(void) { -+ free_irq(ETRAX_USB_RX_IRQ, NULL); -+ free_irq(ETRAX_USB_TX_IRQ, NULL); -+ -+ cris_free_dma(USB_TX_DMA_NBR, "ETRAX 100LX built-in USB (Tx)"); -+ cris_free_dma(USB_RX_DMA_NBR, "ETRAX 100LX built-in USB (Rx)"); -+ -+} -+ -+static void tc_dma_link_intr_urb(struct urb *urb); -+ -+/* Handle processing of Bulk, Ctrl and Intr queues */ -+static void tc_dma_process_queue(int epid) { -+ struct urb *urb; -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ unsigned long flags; -+ char toggle; -+ -+ if(epid_state[epid].disabled) { -+ /* Don't process any URBs on a disabled endpoint */ -+ return; -+ } -+ -+ /* Do not disturb us while fiddling with EPs and epids */ -+ local_irq_save(flags); -+ -+ /* For bulk, Ctrl and Intr can we only have one URB active at a time for -+ a specific EP. */ -+ if(activeUrbList[epid] != NULL) { -+ /* An URB is already active on EP, skip checking queue */ -+ local_irq_restore(flags); -+ return; -+ } -+ -+ urb = urb_list_first(epid); -+ if(urb == NULL) { -+ /* No URB waiting in EP queue. Nothing do to */ -+ local_irq_restore(flags); -+ return; -+ } -+ -+ urb_priv = urb->hcpriv; -+ ASSERT(urb_priv != NULL); -+ ASSERT(urb_priv->urb_state == NOT_STARTED); -+ ASSERT(!usb_pipeisoc(urb->pipe)); -+ -+ /* Remove this URB from the queue and move it to active */ -+ activeUrbList[epid] = urb; -+ urb_list_del(urb, epid); -+ -+ urb_priv->urb_state = STARTED; -+ -+ /* Reset error counters (regardless of which direction this traffic is). */ -+ etrax_epid_clear_error(epid); -+ -+ /* Special handling of Intr EP lists */ -+ if(usb_pipeint(urb->pipe)) { -+ tc_dma_link_intr_urb(urb); -+ local_irq_restore(flags); -+ return; -+ } -+ -+ /* Software must preset the toggle bits for Bulk and Ctrl */ -+ if(usb_pipecontrol(urb->pipe)) { -+ /* Toggle bits are initialized only during setup transaction in a -+ CTRL transfer */ -+ etrax_epid_set_toggle(epid, 0, 0); -+ etrax_epid_set_toggle(epid, 1, 0); -+ } else { -+ toggle = usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), -+ usb_pipeout(urb->pipe)); -+ etrax_epid_set_toggle(epid, usb_pipeout(urb->pipe), toggle); -+ } -+ -+ tc_dbg("Added SBs from (URB:0x%x %s %s) to epid %d: %s\n", -+ (unsigned int)urb, str_dir(urb->pipe), str_type(urb->pipe), epid, -+ sblist_to_str(urb_priv->first_sb)); -+ -+ /* We start the DMA sub channel without checking if it's running or not, -+ because: -+ 1) If it's already running, issuing the start command is a nop. -+ 2) We avoid a test-and-set race condition. */ -+ switch(usb_pipetype(urb->pipe)) { -+ case PIPE_BULK: -+ /* Assert that the EP descriptor is disabled. */ -+ ASSERT(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable))); -+ -+ /* Set up and enable the EP descriptor. */ -+ TxBulkEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ TxBulkEPList[epid].hw_len = 0; -+ TxBulkEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ -+ /* Check if the dummy list is already with us (if several urbs were queued). */ -+ if (usb_pipein(urb->pipe) && (TxBulkEPList[epid].next != virt_to_phys(&TxBulkDummyEPList[epid][0]))) { -+ tc_dbg("Inviting dummy list to the party for urb 0x%lx, epid %d", -+ (unsigned long)urb, epid); -+ -+ /* We don't need to check if the DMA is at this EP or not before changing the -+ next pointer, since we will do it in one 32-bit write (EP descriptors are -+ 32-bit aligned). */ -+ TxBulkEPList[epid].next = virt_to_phys(&TxBulkDummyEPList[epid][0]); -+ } -+ -+ restart_dma8_sub0(); -+ -+ /* Update/restart the bulk start timer since we just started the channel.*/ -+ mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); -+ /* Update/restart the bulk eot timer since we just inserted traffic. */ -+ mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -+ break; -+ case PIPE_CONTROL: -+ /* Assert that the EP descriptor is disabled. */ -+ ASSERT(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable))); -+ -+ /* Set up and enable the EP descriptor. */ -+ TxCtrlEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ TxCtrlEPList[epid].hw_len = 0; -+ TxCtrlEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ -+ *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start); -+ break; -+ } -+ local_irq_restore(flags); -+} -+ -+static void tc_dma_link_intr_urb(struct urb *urb) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ volatile struct USB_EP_Desc *tmp_ep; -+ struct USB_EP_Desc *ep_desc; -+ int i = 0, epid; -+ int pool_idx = 0; -+ -+ ASSERT(urb_priv != NULL); -+ epid = urb_priv->epid; -+ ASSERT(urb_priv->interval > 0); -+ ASSERT(urb_priv->intr_ep_pool_length > 0); -+ -+ tmp_ep = &TxIntrEPList[0]; -+ -+ /* Only insert one EP descriptor in list for Out Intr URBs. -+ We can only handle Out Intr with interval of 128ms because -+ it's not possible to insert several Out Intr EPs because they -+ are not consumed by the DMA. */ -+ if(usb_pipeout(urb->pipe)) { -+ ep_desc = urb_priv->intr_ep_pool[0]; -+ ASSERT(ep_desc); -+ ep_desc->next = tmp_ep->next; -+ tmp_ep->next = virt_to_phys(ep_desc); -+ i++; -+ } else { -+ /* Loop through Intr EP descriptor list and insert EP for URB at -+ specified interval */ -+ do { -+ /* Each EP descriptor with eof flag sat signals a new frame */ -+ if (tmp_ep->command & IO_MASK(USB_EP_command, eof)) { -+ /* Insert a EP from URBs EP pool at correct interval */ -+ if ((i % urb_priv->interval) == 0) { -+ ep_desc = urb_priv->intr_ep_pool[pool_idx]; -+ ASSERT(ep_desc); -+ ep_desc->next = tmp_ep->next; -+ tmp_ep->next = virt_to_phys(ep_desc); -+ pool_idx++; -+ ASSERT(pool_idx <= urb_priv->intr_ep_pool_length); - } -+ i++; -+ } -+ tmp_ep = (struct USB_EP_Desc *)phys_to_virt(tmp_ep->next); -+ } while(tmp_ep != &TxIntrEPList[0]); -+ } -+ -+ intr_dbg("Added SBs to intr epid %d: %s interval:%d (%d EP)\n", epid, -+ sblist_to_str(urb_priv->first_sb), urb_priv->interval, pool_idx); -+ -+ /* We start the DMA sub channel without checking if it's running or not, -+ because: -+ 1) If it's already running, issuing the start command is a nop. -+ 2) We avoid a test-and-set race condition. */ -+ *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start); -+} -+ -+static void tc_dma_process_isoc_urb(struct urb *urb) { -+ unsigned long flags; -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ int epid; -+ -+ /* Do not disturb us while fiddling with EPs and epids */ -+ local_irq_save(flags); -+ -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->first_sb); -+ epid = urb_priv->epid; -+ -+ if(activeUrbList[epid] == NULL) { -+ /* EP is idle, so make this URB active */ -+ activeUrbList[epid] = urb; -+ urb_list_del(urb, epid); -+ ASSERT(TxIsocEPList[epid].sub == 0); -+ ASSERT(!(TxIsocEPList[epid].command & -+ IO_STATE(USB_EP_command, enable, yes))); -+ -+ /* Differentiate between In and Out Isoc. Because In SBs are not consumed*/ -+ if(usb_pipein(urb->pipe)) { -+ /* Each EP for In Isoc will have only one SB descriptor, setup when -+ submitting the first active urb. We do it here by copying from URBs -+ pre-allocated SB. */ -+ memcpy((void *)&(TxIsocSBList[epid]), urb_priv->first_sb, -+ sizeof(TxIsocSBList[epid])); -+ TxIsocEPList[epid].hw_len = 0; -+ TxIsocEPList[epid].sub = virt_to_phys(&(TxIsocSBList[epid])); -+ } else { -+ /* For Out Isoc we attach the pre-allocated list of SBs for the URB */ -+ TxIsocEPList[epid].hw_len = 0; -+ TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ -+ isoc_dbg("Attached first URB:0x%x[%d] to epid:%d first_sb:0x%x" -+ " last_sb::0x%x\n", -+ (unsigned int)urb, urb_priv->urb_num, epid, -+ (unsigned int)(urb_priv->first_sb), -+ (unsigned int)(urb_priv->last_sb)); -+ } -+ -+ if (urb->transfer_flags & URB_ISO_ASAP) { -+ /* The isoc transfer should be started as soon as possible. The -+ start_frame field is a return value if URB_ISO_ASAP was set. Comparing -+ R_USB_FM_NUMBER with a USB Chief trace shows that the first isoc IN -+ token is sent 2 frames later. I'm not sure how this affects usage of -+ the start_frame field by the device driver, or how it affects things -+ when USB_ISO_ASAP is not set, so therefore there's no compensation for -+ the 2 frame "lag" here. */ -+ urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); -+ TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ urb_priv->urb_state = STARTED; -+ isoc_dbg("URB_ISO_ASAP set, urb->start_frame set to %d\n", -+ urb->start_frame); -+ } else { -+ /* Not started yet. */ -+ urb_priv->urb_state = NOT_STARTED; -+ isoc_warn("urb_priv->urb_state set to NOT_STARTED for URB:0x%x\n", -+ (unsigned int)urb); -+ } -+ -+ } else { -+ /* An URB is already active on the EP. Leave URB in queue and let -+ finish_isoc_urb process it after current active URB */ -+ ASSERT(TxIsocEPList[epid].sub != 0); -+ -+ if(usb_pipein(urb->pipe)) { -+ /* Because there already is a active In URB on this epid we do nothing -+ and the finish_isoc_urb() function will handle switching to next URB*/ -+ -+ } else { /* For Out Isoc, insert new URBs traffic last in SB-list. */ -+ struct USB_SB_Desc *temp_sb_desc; -+ -+ /* Set state STARTED to all Out Isoc URBs added to SB list because we -+ don't know how many of them that are finished before descr interrupt*/ -+ urb_priv->urb_state = STARTED; -+ -+ /* Find end of current SB list by looking for SB with eol flag sat */ -+ temp_sb_desc = phys_to_virt(TxIsocEPList[epid].sub); -+ while ((temp_sb_desc->command & IO_MASK(USB_SB_command, eol)) != -+ IO_STATE(USB_SB_command, eol, yes)) { -+ ASSERT(temp_sb_desc->next); -+ temp_sb_desc = phys_to_virt(temp_sb_desc->next); -+ } -+ -+ isoc_dbg("Appended URB:0x%x[%d] (first:0x%x last:0x%x) to epid:%d" -+ " sub:0x%x eol:0x%x\n", -+ (unsigned int)urb, urb_priv->urb_num, -+ (unsigned int)(urb_priv->first_sb), -+ (unsigned int)(urb_priv->last_sb), epid, -+ (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), -+ (unsigned int)temp_sb_desc); -+ -+ /* Next pointer must be set before eol is removed. */ -+ temp_sb_desc->next = virt_to_phys(urb_priv->first_sb); -+ /* Clear the previous end of list flag since there is a new in the -+ added SB descriptor list. */ -+ temp_sb_desc->command &= ~IO_MASK(USB_SB_command, eol); -+ -+ if (!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { -+ __u32 epid_data; -+ /* 8.8.5 in Designer's Reference says we should check for and correct -+ any errors in the EP here. That should not be necessary if -+ epid_attn is handled correctly, so we assume all is ok. */ -+ epid_data = etrax_epid_iso_get(epid); -+ if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) != -+ IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ isoc_err("Disabled Isoc EP with error:%d on epid:%d when appending" -+ " URB:0x%x[%d]\n", -+ IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data), epid, -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ -+ /* The SB list was exhausted. */ -+ if (virt_to_phys(urb_priv->last_sb) != TxIsocEPList[epid].sub) { -+ /* The new sublist did not get processed before the EP was -+ disabled. Setup the EP again. */ -+ -+ if(virt_to_phys(temp_sb_desc) == TxIsocEPList[epid].sub) { -+ isoc_dbg("EP for epid:%d stoped at SB:0x%x before newly inserted" -+ ", restarting from this URBs SB:0x%x\n", -+ epid, (unsigned int)temp_sb_desc, -+ (unsigned int)(urb_priv->first_sb)); -+ TxIsocEPList[epid].hw_len = 0; -+ TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); -+ /* Enable the EP again so data gets processed this time */ -+ TxIsocEPList[epid].command |= -+ IO_STATE(USB_EP_command, enable, yes); -+ -+ } else { -+ /* The EP has been disabled but not at end this URB (god knows -+ where). This should generate an epid_attn so we should not be -+ here */ -+ isoc_warn("EP was disabled on sb:0x%x before SB list for" -+ " URB:0x%x[%d] got processed\n", -+ (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ } else { -+ /* This might happend if we are slow on this function and isn't -+ an error. */ -+ isoc_dbg("EP was disabled and finished with SBs from appended" -+ " URB:0x%x[%d]\n", (unsigned int)urb, urb_priv->urb_num); -+ } -+ } -+ } -+ } -+ -+ /* Start the DMA sub channel */ -+ *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -+ -+ local_irq_restore(flags); -+} -+ -+static void tc_dma_unlink_intr_urb(struct urb *urb) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ volatile struct USB_EP_Desc *first_ep; /* First EP in the list. */ -+ volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ -+ volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ -+ volatile struct USB_EP_Desc *unlink_ep; /* The one we should remove from -+ the list. */ -+ int count = 0; -+ volatile int timeout = 10000; -+ int epid; -+ -+ /* Read 8.8.4 in Designer's Reference, "Removing an EP Descriptor from the -+ List". */ -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->intr_ep_pool_length > 0); -+ epid = urb_priv->epid; -+ -+ /* First disable all Intr EPs belonging to epid for this URB */ -+ first_ep = &TxIntrEPList[0]; -+ curr_ep = first_ep; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -+ /* Disable EP */ -+ next_ep->command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != first_ep); -+ -+ -+ /* Now unlink all EPs belonging to this epid from Descr list */ -+ first_ep = &TxIntrEPList[0]; -+ curr_ep = first_ep; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -+ /* This is the one we should unlink. */ -+ unlink_ep = next_ep; -+ -+ /* Actually unlink the EP from the DMA list. */ -+ curr_ep->next = unlink_ep->next; -+ -+ /* Wait until the DMA is no longer at this descriptor. */ -+ while((*R_DMA_CH8_SUB2_EP == virt_to_phys(unlink_ep)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Intr to leave unlink EP\n"); -+ } -+ -+ count++; -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != first_ep); -+ -+ if(count != urb_priv->intr_ep_pool_length) { -+ intr_warn("Unlinked %d of %d Intr EPs for URB:0x%x[%d]\n", count, -+ urb_priv->intr_ep_pool_length, (unsigned int)urb, -+ urb_priv->urb_num); -+ } else { -+ intr_dbg("Unlinked %d of %d interrupt EPs for URB:0x%x\n", count, -+ urb_priv->intr_ep_pool_length, (unsigned int)urb); -+ } -+} -+ -+static void check_finished_bulk_tx_epids(struct usb_hcd *hcd, -+ int timer) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ __u32 epid_data; -+ -+ /* Protect TxEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ /* A finished EP descriptor is disabled and has a valid sub pointer */ -+ if (!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) && -+ (TxBulkEPList[epid].sub != 0)) { -+ -+ /* Get the active URB for this epid */ -+ urb = activeUrbList[epid]; -+ /* Sanity checks */ -+ ASSERT(urb); -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ /* Only handle finished out Bulk EPs here, -+ and let RX interrupt take care of the rest */ -+ if(!epid_out_traffic(epid)) { -+ continue; -+ } -+ -+ if(timer) { -+ tc_warn("Found finished %s Bulk epid:%d URB:0x%x[%d] from timeout\n", -+ epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb, -+ urb_priv->urb_num); -+ } else { -+ tc_dbg("Found finished %s Bulk epid:%d URB:0x%x[%d] from interrupt\n", -+ epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb, -+ urb_priv->urb_num); -+ } -+ -+ if(urb_priv->urb_state == UNLINK) { -+ /* This Bulk URB is requested to be unlinked, that means that the EP -+ has been disabled and we might not have sent all data */ -+ tc_finish_urb(hcd, urb, urb->status); -+ continue; -+ } -+ -+ ASSERT(urb_priv->urb_state == STARTED); -+ if (phys_to_virt(TxBulkEPList[epid].sub) != urb_priv->last_sb) { -+ tc_err("Endpoint got disabled before reaching last sb\n"); -+ } -+ -+ epid_data = etrax_epid_get(epid); -+ if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) == -+ IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ /* This means that the endpoint has no error, is disabled -+ and had inserted traffic, i.e. transfer successfully completed. */ -+ tc_finish_urb(hcd, urb, 0); -+ } else { -+ /* Shouldn't happen. We expect errors to be caught by epid -+ attention. */ -+ tc_err("Found disabled bulk EP desc (epid:%d error:%d)\n", -+ epid, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data)); -+ } -+ } else { -+ tc_dbg("Ignoring In Bulk epid:%d, let RX interrupt handle it\n", epid); -+ } -+ } -+ -+ local_irq_restore(flags); -+} -+ -+static void check_finished_ctrl_tx_epids(struct usb_hcd *hcd) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ __u32 epid_data; -+ -+ /* Protect TxEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if(epid == DUMMY_EPID) -+ continue; -+ -+ /* A finished EP descriptor is disabled and has a valid sub pointer */ -+ if (!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) && -+ (TxCtrlEPList[epid].sub != 0)) { -+ -+ /* Get the active URB for this epid */ -+ urb = activeUrbList[epid]; -+ -+ if(urb == NULL) { -+ tc_warn("Found finished Ctrl epid:%d with no active URB\n", epid); -+ continue; -+ } -+ -+ /* Sanity checks */ -+ ASSERT(usb_pipein(urb->pipe)); -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ if (phys_to_virt(TxCtrlEPList[epid].sub) != urb_priv->last_sb) { -+ tc_err("Endpoint got disabled before reaching last sb\n"); -+ } -+ -+ epid_data = etrax_epid_get(epid); -+ if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) == -+ IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ /* This means that the endpoint has no error, is disabled -+ and had inserted traffic, i.e. transfer successfully completed. */ -+ -+ /* Check if RX-interrupt for In Ctrl has been processed before -+ finishing the URB */ -+ if(urb_priv->ctrl_rx_done) { -+ tc_dbg("Finishing In Ctrl URB:0x%x[%d] in tx_interrupt\n", -+ (unsigned int)urb, urb_priv->urb_num); -+ tc_finish_urb(hcd, urb, 0); -+ } else { -+ /* If we get zout descriptor interrupt before RX was done for a -+ In Ctrl transfer, then we flag that and it will be finished -+ in the RX-Interrupt */ -+ urb_priv->ctrl_zout_done = 1; -+ tc_dbg("Got zout descr interrupt before RX interrupt\n"); -+ } -+ } else { -+ /* Shouldn't happen. We expect errors to be caught by epid -+ attention. */ -+ tc_err("Found disabled Ctrl EP desc (epid:%d URB:0x%x[%d]) error_code:%d\n", epid, (unsigned int)urb, urb_priv->urb_num, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data)); -+ __dump_ep_desc(&(TxCtrlEPList[epid])); -+ __dump_ept_data(epid); -+ } -+ } -+ } -+ local_irq_restore(flags); -+} -+ -+/* This function goes through all epids that are setup for Out Isoc transfers -+ and marks (isoc_out_done) all queued URBs that the DMA has finished -+ transfer for. -+ No URB completetion is done here to make interrupt routine return quickly. -+ URBs are completed later with help of complete_isoc_bottom_half() that -+ becomes schedules when this functions is finished. */ -+static void check_finished_isoc_tx_epids(void) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ struct USB_SB_Desc* sb_desc; -+ int epid_done; -+ -+ /* Protect TxIsocEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if (TxIsocEPList[epid].sub == 0 || epid == INVALID_EPID || -+ !epid_out_traffic(epid)) { -+ /* Nothing here to see. */ -+ continue; -+ } -+ ASSERT(epid_inuse(epid)); -+ ASSERT(epid_isoc(epid)); -+ -+ sb_desc = phys_to_virt(TxIsocEPList[epid].sub); -+ /* Find the last descriptor of the currently active URB for this ep. -+ This is the first descriptor in the sub list marked for a descriptor -+ interrupt. */ -+ while (sb_desc && !IO_EXTRACT(USB_SB_command, intr, sb_desc->command)) { -+ sb_desc = sb_desc->next ? phys_to_virt(sb_desc->next) : 0; -+ } -+ ASSERT(sb_desc); -+ -+ isoc_dbg("Descr IRQ checking epid:%d sub:0x%x intr:0x%x\n", -+ epid, (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), -+ (unsigned int)sb_desc); -+ -+ urb = activeUrbList[epid]; -+ if(urb == NULL) { -+ isoc_err("Isoc Descr irq on epid:%d with no active URB\n", epid); -+ continue; -+ } -+ -+ epid_done = 0; -+ while(urb && !epid_done) { -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -+ ASSERT(usb_pipeout(urb->pipe)); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->urb_state == STARTED || -+ urb_priv->urb_state == UNLINK); -+ -+ if (sb_desc != urb_priv->last_sb) { -+ /* This urb has been sent. */ -+ urb_priv->isoc_out_done = 1; -+ -+ } else { /* Found URB that has last_sb as the interrupt reason */ -+ -+ /* Check if EP has been disabled, meaning that all transfers are done*/ -+ if(!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { -+ ASSERT((sb_desc->command & IO_MASK(USB_SB_command, eol)) == -+ IO_STATE(USB_SB_command, eol, yes)); -+ ASSERT(sb_desc->next == 0); -+ urb_priv->isoc_out_done = 1; -+ } else { -+ isoc_dbg("Skipping URB:0x%x[%d] because EP not disabled yet\n", -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ /* Stop looking any further in queue */ -+ epid_done = 1; -+ } -+ -+ if (!epid_done) { -+ if(urb == activeUrbList[epid]) { -+ urb = urb_list_first(epid); -+ } else { -+ urb = urb_list_next(urb, epid); -+ } -+ } -+ } /* END: while(urb && !epid_done) */ -+ } -+ -+ local_irq_restore(flags); -+} -+ -+ -+/* This is where the Out Isoc URBs are realy completed. This function is -+ scheduled from tc_dma_tx_interrupt() when one or more Out Isoc transfers -+ are done. This functions completes all URBs earlier marked with -+ isoc_out_done by fast interrupt routine check_finished_isoc_tx_epids() */ -+ -+static void complete_isoc_bottom_half(void *data) { -+ struct crisv10_isoc_complete_data *comp_data; -+ struct usb_iso_packet_descriptor *packet; -+ struct crisv10_urb_priv * urb_priv; -+ unsigned long flags; -+ struct urb* urb; -+ int epid_done; -+ int epid; -+ int i; -+ -+ comp_data = (struct crisv10_isoc_complete_data*)data; -+ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -+ if(!epid_inuse(epid) || !epid_isoc(epid) || !epid_out_traffic(epid) || epid == DUMMY_EPID) { -+ /* Only check valid Out Isoc epids */ -+ continue; -+ } -+ -+ isoc_dbg("Isoc bottom-half checking epid:%d, sub:0x%x\n", epid, -+ (unsigned int)phys_to_virt(TxIsocEPList[epid].sub)); -+ -+ /* The descriptor interrupt handler has marked all transmitted Out Isoc -+ URBs with isoc_out_done. Now we traverse all epids and for all that -+ have out Isoc traffic we traverse its URB list and complete the -+ transmitted URBs. */ -+ epid_done = 0; -+ while (!epid_done) { -+ -+ /* Get the active urb (if any) */ -+ urb = activeUrbList[epid]; -+ if (urb == 0) { -+ isoc_dbg("No active URB on epid:%d anymore\n", epid); -+ epid_done = 1; -+ continue; -+ } -+ -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -+ ASSERT(usb_pipeout(urb->pipe)); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ if (!(urb_priv->isoc_out_done)) { -+ /* We have reached URB that isn't flaged done yet, stop traversing. */ -+ isoc_dbg("Stoped traversing Out Isoc URBs on epid:%d" -+ " before not yet flaged URB:0x%x[%d]\n", -+ epid, (unsigned int)urb, urb_priv->urb_num); -+ epid_done = 1; -+ continue; -+ } -+ -+ /* This urb has been sent. */ -+ isoc_dbg("Found URB:0x%x[%d] that is flaged isoc_out_done\n", -+ (unsigned int)urb, urb_priv->urb_num); -+ -+ /* Set ok on transfered packets for this URB and finish it */ -+ for (i = 0; i < urb->number_of_packets; i++) { -+ packet = &urb->iso_frame_desc[i]; -+ packet->status = 0; -+ packet->actual_length = packet->length; -+ } -+ urb_priv->isoc_packet_counter = urb->number_of_packets; -+ tc_finish_urb(comp_data->hcd, urb, 0); -+ -+ } /* END: while(!epid_done) */ -+ } /* END: for(epid...) */ -+ -+ local_irq_restore(flags); -+ kmem_cache_free(isoc_compl_cache, comp_data); -+} -+ -+ -+static void check_finished_intr_tx_epids(struct usb_hcd *hcd) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ -+ volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ -+ -+ /* Protect TxintrEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if(!epid_inuse(epid) || !epid_intr(epid) || !epid_out_traffic(epid)) { -+ /* Nothing to see on this epid. Only check valid Out Intr epids */ -+ continue; -+ } -+ -+ urb = activeUrbList[epid]; -+ if(urb == 0) { -+ intr_warn("Found Out Intr epid:%d with no active URB\n", epid); -+ continue; -+ } -+ -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_INTERRUPT); -+ ASSERT(usb_pipeout(urb->pipe)); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ /* Go through EPs between first and second sof-EP. It's here Out Intr EPs -+ are inserted.*/ -+ curr_ep = &TxIntrEPList[0]; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if(next_ep == urb_priv->intr_ep_pool[0]) { -+ /* We found the Out Intr EP for this epid */ -+ -+ /* Disable it so it doesn't get processed again */ -+ next_ep->command &= ~IO_MASK(USB_EP_command, enable); -+ -+ /* Finish the active Out Intr URB with status OK */ -+ tc_finish_urb(hcd, urb, 0); -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != &TxIntrEPList[1]); -+ -+ } -+ local_irq_restore(flags); -+} -+ -+/* Interrupt handler for DMA8/IRQ24 with subchannels (called from hardware intr) */ -+static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc) { -+ struct usb_hcd *hcd = (struct usb_hcd*)vhc; -+ ASSERT(hcd); -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub0_descr)) { -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB0_CLR_INTR = IO_STATE(R_DMA_CH8_SUB0_CLR_INTR, clr_descr, do); -+ restart_dma8_sub0(); -+ } -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub1_descr)) { -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB1_CLR_INTR = IO_STATE(R_DMA_CH8_SUB1_CLR_INTR, clr_descr, do); -+ check_finished_ctrl_tx_epids(hcd); -+ } -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub2_descr)) { -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB2_CLR_INTR = IO_STATE(R_DMA_CH8_SUB2_CLR_INTR, clr_descr, do); -+ check_finished_intr_tx_epids(hcd); -+ } -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub3_descr)) { -+ struct crisv10_isoc_complete_data* comp_data; -+ -+ /* Flag done Out Isoc for later completion */ -+ check_finished_isoc_tx_epids(); -+ -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB3_CLR_INTR = IO_STATE(R_DMA_CH8_SUB3_CLR_INTR, clr_descr, do); -+ /* Schedule bottom half of Out Isoc completion function. This function -+ finishes the URBs marked with isoc_out_done */ -+ comp_data = (struct crisv10_isoc_complete_data*) -+ kmem_cache_alloc(isoc_compl_cache, SLAB_ATOMIC); -+ ASSERT(comp_data != NULL); -+ comp_data ->hcd = hcd; -+ -+ INIT_WORK(&comp_data->usb_bh, complete_isoc_bottom_half, comp_data); -+ schedule_work(&comp_data->usb_bh); -+ } -+ -+ return IRQ_HANDLED; -+} -+ -+/* Interrupt handler for DMA9/IRQ25 (called from hardware intr) */ -+static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc) { -+ unsigned long flags; -+ struct urb *urb; -+ struct usb_hcd *hcd = (struct usb_hcd*)vhc; -+ struct crisv10_urb_priv *urb_priv; -+ int epid = 0; -+ int real_error; -+ -+ ASSERT(hcd); -+ -+ /* Clear this interrupt. */ -+ *R_DMA_CH9_CLR_INTR = IO_STATE(R_DMA_CH9_CLR_INTR, clr_eop, do); -+ -+ /* Custom clear interrupt for this interrupt */ -+ /* The reason we cli here is that we call the driver's callback functions. */ -+ local_irq_save(flags); -+ -+ /* Note that this while loop assumes that all packets span only -+ one rx descriptor. */ -+ while(myNextRxDesc->status & IO_MASK(USB_IN_status, eop)) { -+ epid = IO_EXTRACT(USB_IN_status, epid, myNextRxDesc->status); -+ /* Get the active URB for this epid */ -+ urb = activeUrbList[epid]; -+ -+ ASSERT(epid_inuse(epid)); -+ if (!urb) { -+ dma_err("No urb for epid %d in rx interrupt\n", epid); -+ goto skip_out; -+ } -+ -+ /* Check if any errors on epid */ -+ real_error = 0; -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, error)) { -+ __u32 r_usb_ept_data; -+ -+ if (usb_pipeisoc(urb->pipe)) { -+ r_usb_ept_data = etrax_epid_iso_get(epid); -+ if((r_usb_ept_data & IO_MASK(R_USB_EPT_DATA_ISO, valid)) && -+ (IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data) == 0) && -+ (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata))) { -+ /* Not an error, just a failure to receive an expected iso -+ in packet in this frame. This is not documented -+ in the designers reference. Continue processing. -+ */ -+ } else real_error = 1; -+ } else real_error = 1; -+ } -+ -+ if(real_error) { -+ dma_err("Error in RX descr on epid:%d for URB 0x%x", -+ epid, (unsigned int)urb); -+ dump_ept_data(epid); -+ dump_in_desc(myNextRxDesc); -+ goto skip_out; -+ } -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->urb_state == STARTED || -+ urb_priv->urb_state == UNLINK); -+ -+ if ((usb_pipetype(urb->pipe) == PIPE_BULK) || -+ (usb_pipetype(urb->pipe) == PIPE_CONTROL) || -+ (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) { -+ -+ /* We get nodata for empty data transactions, and the rx descriptor's -+ hw_len field is not valid in that case. No data to copy in other -+ words. */ -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { -+ /* No data to copy */ -+ } else { -+ /* -+ dma_dbg("Processing RX for URB:0x%x epid:%d (data:%d ofs:%d)\n", -+ (unsigned int)urb, epid, myNextRxDesc->hw_len, -+ urb_priv->rx_offset); -+ */ -+ /* Only copy data if URB isn't flaged to be unlinked*/ -+ if(urb_priv->urb_state != UNLINK) { -+ /* Make sure the data fits in the buffer. */ -+ if(urb_priv->rx_offset + myNextRxDesc->hw_len -+ <= urb->transfer_buffer_length) { -+ -+ /* Copy the data to URBs buffer */ -+ memcpy(urb->transfer_buffer + urb_priv->rx_offset, -+ phys_to_virt(myNextRxDesc->buf), myNextRxDesc->hw_len); -+ urb_priv->rx_offset += myNextRxDesc->hw_len; -+ } else { -+ /* Signal overflow when returning URB */ -+ urb->status = -EOVERFLOW; -+ tc_finish_urb_later(hcd, urb, urb->status); -+ } -+ } -+ } -+ -+ /* Check if it was the last packet in the transfer */ -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, eot)) { -+ /* Special handling for In Ctrl URBs. */ -+ if(usb_pipecontrol(urb->pipe) && usb_pipein(urb->pipe) && -+ !(urb_priv->ctrl_zout_done)) { -+ /* Flag that RX part of Ctrl transfer is done. Because zout descr -+ interrupt hasn't happend yet will the URB be finished in the -+ TX-Interrupt. */ -+ urb_priv->ctrl_rx_done = 1; -+ tc_dbg("Not finishing In Ctrl URB:0x%x from rx_interrupt, waiting" -+ " for zout\n", (unsigned int)urb); -+ } else { -+ tc_finish_urb(hcd, urb, 0); -+ } -+ } -+ } else { /* ISOC RX */ -+ /* -+ isoc_dbg("Processing RX for epid:%d (URB:0x%x) ISOC pipe\n", -+ epid, (unsigned int)urb); -+ */ -+ -+ struct usb_iso_packet_descriptor *packet; -+ -+ if (urb_priv->urb_state == UNLINK) { -+ isoc_warn("Ignoring Isoc Rx data for urb being unlinked.\n"); -+ goto skip_out; -+ } else if (urb_priv->urb_state == NOT_STARTED) { -+ isoc_err("What? Got Rx data for Isoc urb that isn't started?\n"); -+ goto skip_out; -+ } -+ -+ packet = &urb->iso_frame_desc[urb_priv->isoc_packet_counter]; -+ ASSERT(packet); -+ packet->status = 0; -+ -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { -+ /* We get nodata for empty data transactions, and the rx descriptor's -+ hw_len field is not valid in that case. We copy 0 bytes however to -+ stay in synch. */ -+ packet->actual_length = 0; -+ } else { -+ packet->actual_length = myNextRxDesc->hw_len; -+ /* Make sure the data fits in the buffer. */ -+ ASSERT(packet->actual_length <= packet->length); -+ memcpy(urb->transfer_buffer + packet->offset, -+ phys_to_virt(myNextRxDesc->buf), packet->actual_length); -+ if(packet->actual_length > 0) -+ isoc_dbg("Copied %d bytes, packet %d for URB:0x%x[%d]\n", -+ packet->actual_length, urb_priv->isoc_packet_counter, -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ -+ /* Increment the packet counter. */ -+ urb_priv->isoc_packet_counter++; -+ -+ /* Note that we don't care about the eot field in the rx descriptor's -+ status. It will always be set for isoc traffic. */ -+ if (urb->number_of_packets == urb_priv->isoc_packet_counter) { -+ /* Complete the urb with status OK. */ -+ tc_finish_urb(hcd, urb, 0); -+ } -+ } -+ -+ skip_out: -+ myNextRxDesc->status = 0; -+ myNextRxDesc->command |= IO_MASK(USB_IN_command, eol); -+ myLastRxDesc->command &= ~IO_MASK(USB_IN_command, eol); -+ myLastRxDesc = myNextRxDesc; -+ myNextRxDesc = phys_to_virt(myNextRxDesc->next); -+ flush_etrax_cache(); -+ *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, restart); -+ } -+ -+ local_irq_restore(flags); -+ -+ return IRQ_HANDLED; -+} -+ -+static void tc_bulk_start_timer_func(unsigned long dummy) { -+ /* We might enable an EP descriptor behind the current DMA position when -+ it's about to decide that there are no more bulk traffic and it should -+ stop the bulk channel. -+ Therefore we periodically check if the bulk channel is stopped and there -+ is an enabled bulk EP descriptor, in which case we start the bulk -+ channel. */ -+ -+ if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) { -+ int epid; -+ -+ timer_dbg("bulk_start_timer: Bulk DMA channel not running.\n"); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ timer_warn("Found enabled EP for epid %d, starting bulk channel.\n", -+ epid); -+ restart_dma8_sub0(); -+ -+ /* Restart the bulk eot timer since we just started the bulk channel.*/ -+ mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -+ -+ /* No need to search any further. */ -+ break; -+ } -+ } -+ } else { -+ timer_dbg("bulk_start_timer: Bulk DMA channel running.\n"); -+ } -+} -+ -+static void tc_bulk_eot_timer_func(unsigned long dummy) { -+ struct usb_hcd *hcd = (struct usb_hcd*)dummy; -+ ASSERT(hcd); -+ /* Because of a race condition in the top half, we might miss a bulk eot. -+ This timer "simulates" a bulk eot if we don't get one for a while, -+ hopefully correcting the situation. */ -+ timer_dbg("bulk_eot_timer timed out.\n"); -+ check_finished_bulk_tx_epids(hcd, 1); -+} -+ -+ -+/*************************************************************/ -+/*************************************************************/ -+/* Device driver block */ -+/*************************************************************/ -+/*************************************************************/ -+ -+/* Forward declarations for device driver functions */ -+static int devdrv_hcd_probe(struct device *); -+static int devdrv_hcd_remove(struct device *); -+#ifdef CONFIG_PM -+static int devdrv_hcd_suspend(struct device *, u32, u32); -+static int devdrv_hcd_resume(struct device *, u32); -+#endif /* CONFIG_PM */ -+ -+/* the device */ -+static struct platform_device *devdrv_hc_platform_device; -+ -+/* device driver interface */ -+static struct device_driver devdrv_hc_device_driver = { -+ .name = (char *) hc_name, -+ .bus = &platform_bus_type, -+ -+ .probe = devdrv_hcd_probe, -+ .remove = devdrv_hcd_remove, -+ -+#ifdef CONFIG_PM -+ .suspend = devdrv_hcd_suspend, -+ .resume = devdrv_hcd_resume, -+#endif /* CONFIG_PM */ -+}; - -- CHECK_ALIGN(&TxIsocEPList[i]); -- TxIsocEPList[i].hw_len = 0; -- -- /* Must enable the last EP descr to get eof interrupt. */ -- TxIsocEPList[i].command = (IO_STATE(USB_EP_command, enable, yes) | -- IO_STATE(USB_EP_command, eof, yes) | -- IO_STATE(USB_EP_command, eol, yes) | -- IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -- TxIsocEPList[i].sub = virt_to_phys(&TxIsocSB_zout); -- TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[0]); -- -- *R_DMA_CH8_SUB3_EP = virt_to_phys(&TxIsocEPList[0]); -- *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -- -- DBFEXIT; --} -- --static void etrax_usb_unlink_intr_urb(struct urb *urb) -+/* initialize the host controller and driver */ -+static int __init_or_module devdrv_hcd_probe(struct device *dev) - { -- volatile USB_EP_Desc_t *first_ep; /* First EP in the list. */ -- volatile USB_EP_Desc_t *curr_ep; /* Current EP, the iterator. */ -- volatile USB_EP_Desc_t *next_ep; /* The EP after current. */ -- volatile USB_EP_Desc_t *unlink_ep; /* The one we should remove from the list. */ -- -- int epid; -- -- /* Read 8.8.4 in Designer's Reference, "Removing an EP Descriptor from the List". */ -- -- DBFENTER; -- -- epid = ((etrax_urb_priv_t *)urb->hcpriv)->epid; -- -- first_ep = &TxIntrEPList[0]; -- curr_ep = first_ep; -- -- -- /* Note that this loop removes all EP descriptors with this epid. This assumes -- that all EP descriptors belong to the one and only urb for this epid. */ -- -- do { -- next_ep = (USB_EP_Desc_t *)phys_to_virt(curr_ep->next); -- -- if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -- -- dbg_intr("Found EP to unlink for epid %d", epid); -- -- /* This is the one we should unlink. */ -- unlink_ep = next_ep; -- -- /* Actually unlink the EP from the DMA list. */ -- curr_ep->next = unlink_ep->next; -- -- /* Wait until the DMA is no longer at this descriptor. */ -- while (*R_DMA_CH8_SUB2_EP == virt_to_phys(unlink_ep)); -+ struct usb_hcd *hcd; -+ struct crisv10_hcd *crisv10_hcd; -+ int retval; -+ -+ /* Check DMA burst length */ -+ if(IO_EXTRACT(R_BUS_CONFIG, dma_burst, *R_BUS_CONFIG) != -+ IO_STATE(R_BUS_CONFIG, dma_burst, burst32)) { -+ devdrv_err("Invalid DMA burst length in Etrax 100LX," -+ " needs to be 32\n"); -+ return -EPERM; -+ } -+ -+ hcd = usb_create_hcd(&crisv10_hc_driver, dev, dev->bus_id); -+ if (!hcd) -+ return -ENOMEM; -+ -+ crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ spin_lock_init(&crisv10_hcd->lock); -+ crisv10_hcd->num_ports = num_ports(); -+ crisv10_hcd->running = 0; -+ -+ dev_set_drvdata(dev, crisv10_hcd); -+ -+ devdrv_dbg("ETRAX USB IRQs HC:%d RX:%d TX:%d\n", ETRAX_USB_HC_IRQ, -+ ETRAX_USB_RX_IRQ, ETRAX_USB_TX_IRQ); -+ -+ /* Print out chip version read from registers */ -+ int rev_maj = *R_USB_REVISION & IO_MASK(R_USB_REVISION, major); -+ int rev_min = *R_USB_REVISION & IO_MASK(R_USB_REVISION, minor); -+ if(rev_min == 0) { -+ devdrv_info("Etrax 100LX USB Revision %d v1,2\n", rev_maj); -+ } else { -+ devdrv_info("Etrax 100LX USB Revision %d v%d\n", rev_maj, rev_min); -+ } -+ -+ devdrv_info("Bulk timer interval, start:%d eot:%d\n", -+ BULK_START_TIMER_INTERVAL, -+ BULK_EOT_TIMER_INTERVAL); -+ -+ -+ /* Init root hub data structures */ -+ if(rh_init()) { -+ devdrv_err("Failed init data for Root Hub\n"); -+ retval = -ENOMEM; -+ } -+ -+ if(port_in_use(0)) { -+ if (cris_request_io_interface(if_usb_1, "ETRAX100LX USB-HCD")) { -+ printk(KERN_CRIT "usb-host: request IO interface usb1 failed"); -+ retval = -EBUSY; -+ goto out; -+ } -+ devdrv_info("Claimed interface for USB physical port 1\n"); -+ } -+ if(port_in_use(1)) { -+ if (cris_request_io_interface(if_usb_2, "ETRAX100LX USB-HCD")) { -+ /* Free first interface if second failed to be claimed */ -+ if(port_in_use(0)) { -+ cris_free_io_interface(if_usb_1); -+ } -+ printk(KERN_CRIT "usb-host: request IO interface usb2 failed"); -+ retval = -EBUSY; -+ goto out; -+ } -+ devdrv_info("Claimed interface for USB physical port 2\n"); -+ } -+ -+ /* Init transfer controller structs and locks */ -+ if((retval = tc_init(hcd)) != 0) { -+ goto out; -+ } -+ -+ /* Attach interrupt functions for DMA and init DMA controller */ -+ if((retval = tc_dma_init(hcd)) != 0) { -+ goto out; -+ } -+ -+ /* Attach the top IRQ handler for USB controller interrupts */ -+ if (request_irq(ETRAX_USB_HC_IRQ, crisv10_hcd_top_irq, 0, -+ "ETRAX 100LX built-in USB (HC)", hcd)) { -+ err("Could not allocate IRQ %d for USB", ETRAX_USB_HC_IRQ); -+ retval = -EBUSY; -+ goto out; -+ } -+ -+ /* iso_eof is only enabled when isoc traffic is running. */ -+ *R_USB_IRQ_MASK_SET = -+ /* IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set) | */ -+ IO_STATE(R_USB_IRQ_MASK_SET, bulk_eot, set) | -+ IO_STATE(R_USB_IRQ_MASK_SET, epid_attn, set) | -+ IO_STATE(R_USB_IRQ_MASK_SET, port_status, set) | -+ IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set); -+ -+ -+ crisv10_ready_wait(); -+ /* Reset the USB interface. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); -+ -+ /* Designer's Reference, p. 8 - 10 says we should Initate R_USB_FM_PSTART to -+ 0x2A30 (10800), to guarantee that control traffic gets 10% of the -+ bandwidth, and periodic transfer may allocate the rest (90%). -+ This doesn't work though. -+ The value 11960 is chosen to be just after the SOF token, with a couple -+ of bit times extra for possible bit stuffing. */ -+ *R_USB_FM_PSTART = IO_FIELD(R_USB_FM_PSTART, value, 11960); -+ -+ crisv10_ready_wait(); -+ /* Configure the USB interface as a host controller. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_config); -+ -+ -+ /* Check so controller not busy before enabling ports */ -+ crisv10_ready_wait(); -+ -+ /* Enable selected USB ports */ -+ if(port_in_use(0)) { -+ *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no); -+ } else { -+ *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); -+ } -+ if(port_in_use(1)) { -+ *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no); -+ } else { -+ *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes); -+ } -+ -+ crisv10_ready_wait(); -+ /* Start processing of USB traffic. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -+ -+ /* Do not continue probing initialization before USB interface is done */ -+ crisv10_ready_wait(); -+ -+ /* Register our Host Controller to USB Core -+ * Finish the remaining parts of generic HCD initialization: allocate the -+ * buffers of consistent memory, register the bus -+ * and call the driver's reset() and start() routines. */ -+ retval = usb_add_hcd(hcd, ETRAX_USB_HC_IRQ, IRQF_DISABLED); -+ if (retval != 0) { -+ devdrv_err("Failed registering HCD driver\n"); -+ goto out; -+ } -+ -+ return 0; -+ -+ out: -+ devdrv_hcd_remove(dev); -+ return retval; -+} -+ -+ -+/* cleanup after the host controller and driver */ -+static int __init_or_module devdrv_hcd_remove(struct device *dev) -+{ -+ struct crisv10_hcd *crisv10_hcd = dev_get_drvdata(dev); -+ struct usb_hcd *hcd; -+ -+ if (!crisv10_hcd) -+ return 0; -+ hcd = crisv10_hcd_to_hcd(crisv10_hcd); -+ -+ -+ /* Stop USB Controller in Etrax 100LX */ -+ crisv10_hcd_reset(hcd); -+ -+ usb_remove_hcd(hcd); -+ devdrv_dbg("Removed HCD from USB Core\n"); -+ -+ /* Free USB Controller IRQ */ -+ free_irq(ETRAX_USB_HC_IRQ, NULL); -+ -+ /* Free resources */ -+ tc_dma_destroy(); -+ tc_destroy(); -+ -+ -+ if(port_in_use(0)) { -+ cris_free_io_interface(if_usb_1); -+ } -+ if(port_in_use(1)) { -+ cris_free_io_interface(if_usb_2); -+ } -+ -+ devdrv_dbg("Freed all claimed resources\n"); -+ -+ return 0; -+} -+ -+ -+#ifdef CONFIG_PM -+ -+static int devdrv_hcd_suspend(struct usb_hcd *hcd, u32 state, u32 level) -+{ -+ return 0; /* no-op for now */ -+} -+ -+static int devdrv_hcd_resume(struct usb_hcd *hcd, u32 level) -+{ -+ return 0; /* no-op for now */ -+} -+ -+#endif /* CONFIG_PM */ -+ -+ -+ -+/*************************************************************/ -+/*************************************************************/ -+/* Module block */ -+/*************************************************************/ -+/*************************************************************/ -+ -+/* register driver */ -+static int __init module_hcd_init(void) -+{ -+ -+ if (usb_disabled()) -+ return -ENODEV; -+ -+ /* Here we select enabled ports by following defines created from -+ menuconfig */ -+#ifndef CONFIG_ETRAX_USB_HOST_PORT1 -+ ports &= ~(1<<0); -+#endif -+#ifndef CONFIG_ETRAX_USB_HOST_PORT2 -+ ports &= ~(1<<1); -+#endif - -- /* Now we are free to remove it and its SB descriptor. -- Note that it is assumed here that there is only one sb in the -- sb list for this ep. */ -- kmem_cache_free(usb_desc_cache, phys_to_virt(unlink_ep->sub)); -- kmem_cache_free(usb_desc_cache, (USB_EP_Desc_t *)unlink_ep); -- } -+ printk(KERN_INFO "%s version "VERSION" "COPYRIGHT"\n", product_desc); - -- curr_ep = phys_to_virt(curr_ep->next); -+ devdrv_hc_platform_device = -+ platform_device_register_simple((char *) hc_name, 0, NULL, 0); - -- } while (curr_ep != first_ep); -- urb->hcpriv = NULL; -+ if (IS_ERR(devdrv_hc_platform_device)) -+ return PTR_ERR(devdrv_hc_platform_device); -+ return driver_register(&devdrv_hc_device_driver); -+ /* -+ * Note that we do not set the DMA mask for the device, -+ * i.e. we pretend that we will use PIO, since no specific -+ * allocation routines are needed for DMA buffers. This will -+ * cause the HCD buffer allocation routines to fall back to -+ * kmalloc(). -+ */ - } - --void etrax_usb_do_intr_recover(int epid) --{ -- USB_EP_Desc_t *first_ep, *tmp_ep; -+/* unregister driver */ -+static void __exit module_hcd_exit(void) -+{ -+ driver_unregister(&devdrv_hc_device_driver); -+} - -- DBFENTER; -- -- first_ep = (USB_EP_Desc_t *)phys_to_virt(*R_DMA_CH8_SUB2_EP); -- tmp_ep = first_ep; -- -- /* What this does is simply to walk the list of interrupt -- ep descriptors and enable those that are disabled. */ -- -- do { -- if (IO_EXTRACT(USB_EP_command, epid, tmp_ep->command) == epid && -- !(tmp_ep->command & IO_MASK(USB_EP_command, enable))) { -- tmp_ep->command |= IO_STATE(USB_EP_command, enable, yes); -- } -- -- tmp_ep = (USB_EP_Desc_t *)phys_to_virt(tmp_ep->next); -- -- } while (tmp_ep != first_ep); -- -- -- DBFEXIT; --} -- --static int etrax_rh_unlink_urb (struct urb *urb) --{ -- etrax_hc_t *hc; -- -- DBFENTER; -- -- hc = urb->dev->bus->hcpriv; -- -- if (hc->rh.urb == urb) { -- hc->rh.send = 0; -- del_timer(&hc->rh.rh_int_timer); -- } -- -- DBFEXIT; -- return 0; --} -- --static void etrax_rh_send_irq(struct urb *urb) --{ -- __u16 data = 0; -- etrax_hc_t *hc = urb->dev->bus->hcpriv; -- DBFENTER; -- --/* -- dbg_rh("R_USB_FM_NUMBER : 0x%08X", *R_USB_FM_NUMBER); -- dbg_rh("R_USB_FM_REMAINING: 0x%08X", *R_USB_FM_REMAINING); --*/ -- -- data |= (hc->rh.wPortChange_1) ? (1 << 1) : 0; -- data |= (hc->rh.wPortChange_2) ? (1 << 2) : 0; -- -- *((__u16 *)urb->transfer_buffer) = cpu_to_le16(data); -- /* FIXME: Why is actual_length set to 1 when data is 2 bytes? -- Since only 1 byte is used, why not declare data as __u8? */ -- urb->actual_length = 1; -- urb->status = 0; -- -- if (hc->rh.send && urb->complete) { -- dbg_rh("wPortChange_1: 0x%04X", hc->rh.wPortChange_1); -- dbg_rh("wPortChange_2: 0x%04X", hc->rh.wPortChange_2); -- -- urb->complete(urb, NULL); -- } -- -- DBFEXIT; --} -- --static void etrax_rh_init_int_timer(struct urb *urb) --{ -- etrax_hc_t *hc; -- -- DBFENTER; -- -- hc = urb->dev->bus->hcpriv; -- hc->rh.interval = urb->interval; -- init_timer(&hc->rh.rh_int_timer); -- hc->rh.rh_int_timer.function = etrax_rh_int_timer_do; -- hc->rh.rh_int_timer.data = (unsigned long)urb; -- /* FIXME: Is the jiffies resolution enough? All intervals < 10 ms will be mapped -- to 0, and the rest to the nearest lower 10 ms. */ -- hc->rh.rh_int_timer.expires = jiffies + ((HZ * hc->rh.interval) / 1000); -- add_timer(&hc->rh.rh_int_timer); -- -- DBFEXIT; --} -- --static void etrax_rh_int_timer_do(unsigned long ptr) --{ -- struct urb *urb; -- etrax_hc_t *hc; -- -- DBFENTER; -- -- urb = (struct urb*)ptr; -- hc = urb->dev->bus->hcpriv; -- -- if (hc->rh.send) { -- etrax_rh_send_irq(urb); -- } -- -- DBFEXIT; --} -- --static int etrax_usb_setup_epid(struct urb *urb) --{ -- int epid; -- char devnum, endpoint, out_traffic, slow; -- int maxlen; -- unsigned long flags; -- -- DBFENTER; -- -- epid = etrax_usb_lookup_epid(urb); -- if ((epid != -1)){ -- /* An epid that fits this urb has been found. */ -- DBFEXIT; -- return epid; -- } -- -- /* We must find and initiate a new epid for this urb. */ -- epid = etrax_usb_allocate_epid(); -- -- if (epid == -1) { -- /* Failed to allocate a new epid. */ -- DBFEXIT; -- return epid; -- } -- -- /* We now have a new epid to use. Initiate it. */ -- set_bit(epid, (void *)&epid_usage_bitmask); -- -- devnum = usb_pipedevice(urb->pipe); -- endpoint = usb_pipeendpoint(urb->pipe); -- slow = usb_pipeslow(urb->pipe); -- maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -- if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -- /* We want both IN and OUT control traffic to be put on the same EP/SB list. */ -- out_traffic = 1; -- } else { -- out_traffic = usb_pipeout(urb->pipe); -- } -- -- save_flags(flags); -- cli(); -- -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- -- if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- *R_USB_EPT_DATA_ISO = IO_STATE(R_USB_EPT_DATA_ISO, valid, yes) | -- /* FIXME: Change any to the actual port? */ -- IO_STATE(R_USB_EPT_DATA_ISO, port, any) | -- IO_FIELD(R_USB_EPT_DATA_ISO, max_len, maxlen) | -- IO_FIELD(R_USB_EPT_DATA_ISO, ep, endpoint) | -- IO_FIELD(R_USB_EPT_DATA_ISO, dev, devnum); -- } else { -- *R_USB_EPT_DATA = IO_STATE(R_USB_EPT_DATA, valid, yes) | -- IO_FIELD(R_USB_EPT_DATA, low_speed, slow) | -- /* FIXME: Change any to the actual port? */ -- IO_STATE(R_USB_EPT_DATA, port, any) | -- IO_FIELD(R_USB_EPT_DATA, max_len, maxlen) | -- IO_FIELD(R_USB_EPT_DATA, ep, endpoint) | -- IO_FIELD(R_USB_EPT_DATA, dev, devnum); -- } -- -- restore_flags(flags); -- -- if (out_traffic) { -- set_bit(epid, (void *)&epid_out_traffic); -- } else { -- clear_bit(epid, (void *)&epid_out_traffic); -- } -- -- dbg_epid("Setting up epid %d with devnum %d, endpoint %d and max_len %d (%s)", -- epid, devnum, endpoint, maxlen, out_traffic ? "OUT" : "IN"); -- -- DBFEXIT; -- return epid; --} -- --static void etrax_usb_free_epid(int epid) --{ -- unsigned long flags; -- -- DBFENTER; -- -- if (!test_bit(epid, (void *)&epid_usage_bitmask)) { -- warn("Trying to free unused epid %d", epid); -- DBFEXIT; -- return; -- } -- -- save_flags(flags); -- cli(); -- -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- while (*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)); -- /* This will, among other things, set the valid field to 0. */ -- *R_USB_EPT_DATA = 0; -- restore_flags(flags); -- -- clear_bit(epid, (void *)&epid_usage_bitmask); -- -- -- dbg_epid("Freed epid %d", epid); -- -- DBFEXIT; --} -- --static int etrax_usb_lookup_epid(struct urb *urb) --{ -- int i; -- __u32 data; -- char devnum, endpoint, slow, out_traffic; -- int maxlen; -- unsigned long flags; -- -- DBFENTER; -- -- devnum = usb_pipedevice(urb->pipe); -- endpoint = usb_pipeendpoint(urb->pipe); -- slow = usb_pipeslow(urb->pipe); -- maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -- if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -- /* We want both IN and OUT control traffic to be put on the same EP/SB list. */ -- out_traffic = 1; -- } else { -- out_traffic = usb_pipeout(urb->pipe); -- } -- -- /* Step through att epids. */ -- for (i = 0; i < NBR_OF_EPIDS; i++) { -- if (test_bit(i, (void *)&epid_usage_bitmask) && -- test_bit(i, (void *)&epid_out_traffic) == out_traffic) { -- -- save_flags(flags); -- cli(); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, i); -- nop(); -- -- if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- data = *R_USB_EPT_DATA_ISO; -- restore_flags(flags); -- -- if ((IO_MASK(R_USB_EPT_DATA_ISO, valid) & data) && -- (IO_EXTRACT(R_USB_EPT_DATA_ISO, dev, data) == devnum) && -- (IO_EXTRACT(R_USB_EPT_DATA_ISO, ep, data) == endpoint) && -- (IO_EXTRACT(R_USB_EPT_DATA_ISO, max_len, data) == maxlen)) { -- dbg_epid("Found epid %d for devnum %d, endpoint %d (%s)", -- i, devnum, endpoint, out_traffic ? "OUT" : "IN"); -- DBFEXIT; -- return i; -- } -- } else { -- data = *R_USB_EPT_DATA; -- restore_flags(flags); -- -- if ((IO_MASK(R_USB_EPT_DATA, valid) & data) && -- (IO_EXTRACT(R_USB_EPT_DATA, dev, data) == devnum) && -- (IO_EXTRACT(R_USB_EPT_DATA, ep, data) == endpoint) && -- (IO_EXTRACT(R_USB_EPT_DATA, low_speed, data) == slow) && -- (IO_EXTRACT(R_USB_EPT_DATA, max_len, data) == maxlen)) { -- dbg_epid("Found epid %d for devnum %d, endpoint %d (%s)", -- i, devnum, endpoint, out_traffic ? "OUT" : "IN"); -- DBFEXIT; -- return i; -- } -- } -- } -- } -- -- DBFEXIT; -- return -1; --} -- --static int etrax_usb_allocate_epid(void) --{ -- int i; -- -- DBFENTER; -- -- for (i = 0; i < NBR_OF_EPIDS; i++) { -- if (!test_bit(i, (void *)&epid_usage_bitmask)) { -- dbg_epid("Found free epid %d", i); -- DBFEXIT; -- return i; -- } -- } -- -- dbg_epid("Found no free epids"); -- DBFEXIT; -- return -1; --} -- --static int etrax_usb_submit_urb(struct urb *urb, unsigned mem_flags) --{ -- etrax_hc_t *hc; -- int ret = -EINVAL; -- -- DBFENTER; -- -- if (!urb->dev || !urb->dev->bus) { -- return -ENODEV; -- } -- if (usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)) <= 0) { -- info("Submit urb to pipe with maxpacketlen 0, pipe 0x%X\n", urb->pipe); -- return -EMSGSIZE; -- } -- -- if (urb->timeout) { -- /* FIXME. */ -- warn("urb->timeout specified, ignoring."); -- } -- -- hc = (etrax_hc_t*)urb->dev->bus->hcpriv; -- -- if (usb_pipedevice(urb->pipe) == hc->rh.devnum) { -- /* This request is for the Virtual Root Hub. */ -- ret = etrax_rh_submit_urb(urb); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_BULK) { -- -- ret = etrax_usb_submit_bulk_urb(urb); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -- -- ret = etrax_usb_submit_ctrl_urb(urb); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { -- int bustime; -- -- if (urb->bandwidth == 0) { -- bustime = usb_check_bandwidth(urb->dev, urb); -- if (bustime < 0) { -- ret = bustime; -- } else { -- ret = etrax_usb_submit_intr_urb(urb); -- if (ret == 0) -- usb_claim_bandwidth(urb->dev, urb, bustime, 0); -- } -- } else { -- /* Bandwidth already set. */ -- ret = etrax_usb_submit_intr_urb(urb); -- } -- -- } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- int bustime; -- -- if (urb->bandwidth == 0) { -- bustime = usb_check_bandwidth(urb->dev, urb); -- if (bustime < 0) { -- ret = bustime; -- } else { -- ret = etrax_usb_submit_isoc_urb(urb); -- if (ret == 0) -- usb_claim_bandwidth(urb->dev, urb, bustime, 0); -- } -- } else { -- /* Bandwidth already set. */ -- ret = etrax_usb_submit_isoc_urb(urb); -- } -- } -- -- DBFEXIT; -- -- if (ret != 0) -- printk("Submit URB error %d\n", ret); -- -- return ret; --} -- --static int etrax_usb_unlink_urb(struct urb *urb, int status) --{ -- etrax_hc_t *hc; -- etrax_urb_priv_t *urb_priv; -- int epid; -- unsigned int flags; -- -- DBFENTER; -- -- if (!urb) { -- return -EINVAL; -- } -- -- /* Disable interrupts here since a descriptor interrupt for the isoc epid -- will modify the sb list. This could possibly be done more granular, but -- unlink_urb should not be used frequently anyway. -- */ -- -- save_flags(flags); -- cli(); -- -- if (!urb->dev || !urb->dev->bus) { -- restore_flags(flags); -- return -ENODEV; -- } -- if (!urb->hcpriv) { -- /* This happens if a device driver calls unlink on an urb that -- was never submitted (lazy driver) or if the urb was completed -- while unlink was being called. */ -- restore_flags(flags); -- return 0; -- } -- if (urb->transfer_flags & URB_ASYNC_UNLINK) { -- /* FIXME. */ -- /* If URB_ASYNC_UNLINK is set: -- unlink -- move to a separate urb list -- call complete at next sof with ECONNRESET -- -- If not: -- wait 1 ms -- unlink -- call complete with ENOENT -- */ -- warn("URB_ASYNC_UNLINK set, ignoring."); -- } -- -- /* One might think that urb->status = -EINPROGRESS would be a requirement for unlinking, -- but that doesn't work for interrupt and isochronous traffic since they are completed -- repeatedly, and urb->status is set then. That may in itself be a bug though. */ -- -- hc = urb->dev->bus->hcpriv; -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- epid = urb_priv->epid; -- -- /* Set the urb status (synchronous unlink). */ -- urb->status = -ENOENT; -- urb_priv->urb_state = UNLINK; -- -- if (usb_pipedevice(urb->pipe) == hc->rh.devnum) { -- int ret; -- ret = etrax_rh_unlink_urb(urb); -- DBFEXIT; -- restore_flags(flags); -- return ret; -- -- } else if (usb_pipetype(urb->pipe) == PIPE_BULK) { -- -- dbg_bulk("Unlink of bulk urb (0x%lx)", (unsigned long)urb); -- -- if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -- /* The EP was enabled, disable it and wait. */ -- TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -- -- /* Ah, the luxury of busy-wait. */ -- while (*R_DMA_CH8_SUB0_EP == virt_to_phys(&TxBulkEPList[epid])); -- } -- /* Kicking dummy list out of the party. */ -- TxBulkEPList[epid].next = virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -- -- dbg_ctrl("Unlink of ctrl urb (0x%lx)", (unsigned long)urb); -- -- if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -- /* The EP was enabled, disable it and wait. */ -- TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -- -- /* Ah, the luxury of busy-wait. */ -- while (*R_DMA_CH8_SUB1_EP == virt_to_phys(&TxCtrlEPList[epid])); -- } -- -- } else if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { -- -- dbg_intr("Unlink of intr urb (0x%lx)", (unsigned long)urb); -- -- /* Separate function because it's a tad more complicated. */ -- etrax_usb_unlink_intr_urb(urb); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- -- dbg_isoc("Unlink of isoc urb (0x%lx)", (unsigned long)urb); -- -- if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -- /* The EP was enabled, disable it and wait. */ -- TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -- -- /* Ah, the luxury of busy-wait. */ -- while (*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])); -- } -- } -- -- /* Note that we need to remove the urb from the urb list *before* removing its SB -- descriptors. (This means that the isoc eof handler might get a null urb when we -- are unlinking the last urb.) */ -- -- if (usb_pipetype(urb->pipe) == PIPE_BULK) { -- -- urb_list_del(urb, epid); -- TxBulkEPList[epid].sub = 0; -- etrax_remove_from_sb_list(urb); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -- -- urb_list_del(urb, epid); -- TxCtrlEPList[epid].sub = 0; -- etrax_remove_from_sb_list(urb); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { -- -- urb_list_del(urb, epid); -- /* Sanity check (should never happen). */ -- assert(urb_list_empty(epid)); -- -- /* Release allocated bandwidth. */ -- usb_release_bandwidth(urb->dev, urb, 0); -- -- } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- -- if (usb_pipeout(urb->pipe)) { -- -- USB_SB_Desc_t *iter_sb, *prev_sb, *next_sb; -- -- if (__urb_list_entry(urb, epid)) { -- -- urb_list_del(urb, epid); -- iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0; -- prev_sb = 0; -- while (iter_sb && (iter_sb != urb_priv->first_sb)) { -- prev_sb = iter_sb; -- iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -- } -- -- if (iter_sb == 0) { -- /* Unlink of the URB currently being transmitted. */ -- prev_sb = 0; -- iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0; -- } -- -- while (iter_sb && (iter_sb != urb_priv->last_sb)) { -- iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -- } -- if (iter_sb) { -- next_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -- } else { -- /* This should only happen if the DMA has completed -- processing the SB list for this EP while interrupts -- are disabled. */ -- dbg_isoc("Isoc urb not found, already sent?"); -- next_sb = 0; -- } -- if (prev_sb) { -- prev_sb->next = next_sb ? virt_to_phys(next_sb) : 0; -- } else { -- TxIsocEPList[epid].sub = next_sb ? virt_to_phys(next_sb) : 0; -- } -- -- etrax_remove_from_sb_list(urb); -- if (urb_list_empty(epid)) { -- TxIsocEPList[epid].sub = 0; -- dbg_isoc("Last isoc out urb epid %d", epid); -- } else if (next_sb || prev_sb) { -- dbg_isoc("Re-enable isoc out epid %d", epid); -- -- TxIsocEPList[epid].hw_len = 0; -- TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -- } else { -- TxIsocEPList[epid].sub = 0; -- dbg_isoc("URB list non-empty and no SB list, EP disabled"); -- } -- } else { -- dbg_isoc("Urb 0x%p not found, completed already?", urb); -- } -- } else { -- -- urb_list_del(urb, epid); -- -- /* For in traffic there is only one SB descriptor for each EP even -- though there may be several urbs (all urbs point at the same SB). */ -- if (urb_list_empty(epid)) { -- /* No more urbs, remove the SB. */ -- TxIsocEPList[epid].sub = 0; -- etrax_remove_from_sb_list(urb); -- } else { -- TxIsocEPList[epid].hw_len = 0; -- TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -- } -- } -- /* Release allocated bandwidth. */ -- usb_release_bandwidth(urb->dev, urb, 1); -- } -- /* Free the epid if urb list is empty. */ -- if (urb_list_empty(epid)) { -- etrax_usb_free_epid(epid); -- } -- restore_flags(flags); -- -- /* Must be done before calling completion handler. */ -- kfree(urb_priv); -- urb->hcpriv = 0; -- -- if (urb->complete) { -- urb->complete(urb, NULL); -- } -- -- DBFEXIT; -- return 0; --} -- --static int etrax_usb_get_frame_number(struct usb_device *usb_dev) --{ -- DBFENTER; -- DBFEXIT; -- return (*R_USB_FM_NUMBER & 0x7ff); --} -- --static irqreturn_t etrax_usb_tx_interrupt(int irq, void *vhc) --{ -- DBFENTER; -- -- /* This interrupt handler could be used when unlinking EP descriptors. */ -- -- if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub0_descr)) { -- USB_EP_Desc_t *ep; -- -- //dbg_bulk("dma8_sub0_descr (BULK) intr."); -- -- /* It should be safe clearing the interrupt here, since we don't expect to get a new -- one until we restart the bulk channel. */ -- *R_DMA_CH8_SUB0_CLR_INTR = IO_STATE(R_DMA_CH8_SUB0_CLR_INTR, clr_descr, do); -- -- /* Wait while the DMA is running (though we don't expect it to be). */ -- while (*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd)); -- -- /* Advance the DMA to the next EP descriptor. */ -- ep = (USB_EP_Desc_t *)phys_to_virt(*R_DMA_CH8_SUB0_EP); -- -- //dbg_bulk("descr intr: DMA is at 0x%lx", (unsigned long)ep); -- -- /* ep->next is already a physical address; no need for a virt_to_phys. */ -- *R_DMA_CH8_SUB0_EP = ep->next; -- -- /* Start the DMA bulk channel again. */ -- *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); -- } -- if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub1_descr)) { -- struct urb *urb; -- int epid; -- etrax_urb_priv_t *urb_priv; -- unsigned long int flags; -- -- dbg_ctrl("dma8_sub1_descr (CTRL) intr."); -- *R_DMA_CH8_SUB1_CLR_INTR = IO_STATE(R_DMA_CH8_SUB1_CLR_INTR, clr_descr, do); -- -- /* The complete callback gets called so we cli. */ -- save_flags(flags); -- cli(); -- -- for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -- if ((TxCtrlEPList[epid].sub == 0) || -- (epid == DUMMY_EPID) || -- (epid == INVALID_EPID)) { -- /* Nothing here to see. */ -- continue; -- } -- -- /* Get the first urb (if any). */ -- urb = urb_list_first(epid); -- -- if (urb) { -- -- /* Sanity check. */ -- assert(usb_pipetype(urb->pipe) == PIPE_CONTROL); -- -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- if (urb_priv->urb_state == WAITING_FOR_DESCR_INTR) { -- assert(!(TxCtrlEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable))); -- -- etrax_usb_complete_urb(urb, 0); -- } -- } -- } -- restore_flags(flags); -- } -- if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub2_descr)) { -- dbg_intr("dma8_sub2_descr (INTR) intr."); -- *R_DMA_CH8_SUB2_CLR_INTR = IO_STATE(R_DMA_CH8_SUB2_CLR_INTR, clr_descr, do); -- } -- if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub3_descr)) { -- struct urb *urb; -- int epid; -- int epid_done; -- etrax_urb_priv_t *urb_priv; -- USB_SB_Desc_t *sb_desc; -- -- usb_isoc_complete_data_t *comp_data = NULL; -- -- /* One or more isoc out transfers are done. */ -- dbg_isoc("dma8_sub3_descr (ISOC) intr."); -- -- /* For each isoc out EP search for the first sb_desc with the intr flag -- set. This descriptor must be the last packet from an URB. Then -- traverse the URB list for the EP until the URB with urb_priv->last_sb -- matching the intr-marked sb_desc is found. All URBs before this have -- been sent. -- */ -- -- for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -- /* Skip past epids with no SB lists, epids used for in traffic, -- and special (dummy, invalid) epids. */ -- if ((TxIsocEPList[epid].sub == 0) || -- (test_bit(epid, (void *)&epid_out_traffic) == 0) || -- (epid == DUMMY_EPID) || -- (epid == INVALID_EPID)) { -- /* Nothing here to see. */ -- continue; -- } -- sb_desc = phys_to_virt(TxIsocEPList[epid].sub); -- -- /* Find the last descriptor of the currently active URB for this ep. -- This is the first descriptor in the sub list marked for a descriptor -- interrupt. */ -- while (sb_desc && !IO_EXTRACT(USB_SB_command, intr, sb_desc->command)) { -- sb_desc = sb_desc->next ? phys_to_virt(sb_desc->next) : 0; -- } -- assert(sb_desc); -- -- dbg_isoc("Check epid %d, sub 0x%p, SB 0x%p", -- epid, -- phys_to_virt(TxIsocEPList[epid].sub), -- sb_desc); -- -- epid_done = 0; -- -- /* Get the first urb (if any). */ -- urb = urb_list_first(epid); -- assert(urb); -- -- while (urb && !epid_done) { -- -- /* Sanity check. */ -- assert(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -- -- if (!usb_pipeout(urb->pipe)) { -- /* descr interrupts are generated only for out pipes. */ -- epid_done = 1; -- continue; -- } -- -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- if (sb_desc != urb_priv->last_sb) { -- -- /* This urb has been sent. */ -- dbg_isoc("out URB 0x%p sent", urb); -- -- urb_priv->urb_state = TRANSFER_DONE; -- -- } else if ((sb_desc == urb_priv->last_sb) && -- !(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { -- -- assert((sb_desc->command & IO_MASK(USB_SB_command, eol)) == IO_STATE(USB_SB_command, eol, yes)); -- assert(sb_desc->next == 0); -- -- dbg_isoc("out URB 0x%p last in list, epid disabled", urb); -- TxIsocEPList[epid].sub = 0; -- TxIsocEPList[epid].hw_len = 0; -- urb_priv->urb_state = TRANSFER_DONE; -- -- epid_done = 1; -- -- } else { -- epid_done = 1; -- } -- if (!epid_done) { -- urb = urb_list_next(urb, epid); -- } -- } -- -- } -- -- *R_DMA_CH8_SUB3_CLR_INTR = IO_STATE(R_DMA_CH8_SUB3_CLR_INTR, clr_descr, do); -- -- comp_data = (usb_isoc_complete_data_t*)kmem_cache_alloc(isoc_compl_cache, SLAB_ATOMIC); -- assert(comp_data != NULL); -- -- INIT_WORK(&comp_data->usb_bh, etrax_usb_isoc_descr_interrupt_bottom_half, comp_data); -- schedule_work(&comp_data->usb_bh); -- } -- -- DBFEXIT; -- return IRQ_HANDLED; --} -- --static void etrax_usb_isoc_descr_interrupt_bottom_half(void *data) --{ -- usb_isoc_complete_data_t *comp_data = (usb_isoc_complete_data_t*)data; -- -- struct urb *urb; -- int epid; -- int epid_done; -- etrax_urb_priv_t *urb_priv; -- -- DBFENTER; -- -- dbg_isoc("dma8_sub3_descr (ISOC) bottom half."); -- -- for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -- unsigned long flags; -- -- save_flags(flags); -- cli(); -- -- epid_done = 0; -- -- /* The descriptor interrupt handler has marked all transmitted isoch. out -- URBs with TRANSFER_DONE. Now we traverse all epids and for all that -- have isoch. out traffic traverse its URB list and complete the -- transmitted URB. -- */ -- -- while (!epid_done) { -- -- /* Get the first urb (if any). */ -- urb = urb_list_first(epid); -- if (urb == 0) { -- epid_done = 1; -- continue; -- } -- -- if (usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) { -- epid_done = 1; -- continue; -- } -- -- if (!usb_pipeout(urb->pipe)) { -- /* descr interrupts are generated only for out pipes. */ -- epid_done = 1; -- continue; -- } -- -- dbg_isoc("Check epid %d, SB 0x%p", epid, (char*)TxIsocEPList[epid].sub); -- -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- if (urb_priv->urb_state == TRANSFER_DONE) { -- int i; -- struct usb_iso_packet_descriptor *packet; -- -- /* This urb has been sent. */ -- dbg_isoc("Completing isoc out URB 0x%p", urb); -- -- for (i = 0; i < urb->number_of_packets; i++) { -- packet = &urb->iso_frame_desc[i]; -- packet->status = 0; -- packet->actual_length = packet->length; -- } -- -- etrax_usb_complete_isoc_urb(urb, 0); -- -- if (urb_list_empty(epid)) { -- etrax_usb_free_epid(epid); -- epid_done = 1; -- } -- } else { -- epid_done = 1; -- } -- } -- restore_flags(flags); -- -- } -- kmem_cache_free(isoc_compl_cache, comp_data); -- -- DBFEXIT; --} -- -- -- --static irqreturn_t etrax_usb_rx_interrupt(int irq, void *vhc) --{ -- struct urb *urb; -- etrax_urb_priv_t *urb_priv; -- int epid = 0; -- unsigned long flags; -- -- /* Isoc diagnostics. */ -- static int curr_fm = 0; -- static int prev_fm = 0; -- -- DBFENTER; -- -- /* Clear this interrupt. */ -- *R_DMA_CH9_CLR_INTR = IO_STATE(R_DMA_CH9_CLR_INTR, clr_eop, do); -- -- /* Note that this while loop assumes that all packets span only -- one rx descriptor. */ -- -- /* The reason we cli here is that we call the driver's callback functions. */ -- save_flags(flags); -- cli(); -- -- while (myNextRxDesc->status & IO_MASK(USB_IN_status, eop)) { -- -- epid = IO_EXTRACT(USB_IN_status, epid, myNextRxDesc->status); -- urb = urb_list_first(epid); -- -- //printk("eop for epid %d, first urb 0x%lx\n", epid, (unsigned long)urb); -- -- if (!urb) { -- err("No urb for epid %d in rx interrupt", epid); -- __dump_ept_data(epid); -- goto skip_out; -- } -- -- /* Note that we cannot indescriminately assert(usb_pipein(urb->pipe)) since -- ctrl pipes are not. */ -- -- if (myNextRxDesc->status & IO_MASK(USB_IN_status, error)) { -- __u32 r_usb_ept_data; -- int no_error = 0; -- -- assert(test_bit(epid, (void *)&epid_usage_bitmask)); -- -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- r_usb_ept_data = *R_USB_EPT_DATA_ISO; -- -- if ((r_usb_ept_data & IO_MASK(R_USB_EPT_DATA_ISO, valid)) && -- (IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data) == 0) && -- (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata))) { -- /* Not an error, just a failure to receive an expected iso -- in packet in this frame. This is not documented -- in the designers reference. -- */ -- no_error++; -- } else { -- warn("R_USB_EPT_DATA_ISO for epid %d = 0x%x", epid, r_usb_ept_data); -- } -- } else { -- r_usb_ept_data = *R_USB_EPT_DATA; -- warn("R_USB_EPT_DATA for epid %d = 0x%x", epid, r_usb_ept_data); -- } -- -- if (!no_error){ -- warn("error in rx desc->status, epid %d, first urb = 0x%lx", -- epid, (unsigned long)urb); -- __dump_in_desc(myNextRxDesc); -- -- warn("R_USB_STATUS = 0x%x", *R_USB_STATUS); -- -- /* Check that ept was disabled when error occurred. */ -- switch (usb_pipetype(urb->pipe)) { -- case PIPE_BULK: -- assert(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable))); -- break; -- case PIPE_CONTROL: -- assert(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable))); -- break; -- case PIPE_INTERRUPT: -- assert(!(TxIntrEPList[epid].command & IO_MASK(USB_EP_command, enable))); -- break; -- case PIPE_ISOCHRONOUS: -- assert(!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))); -- break; -- default: -- warn("etrax_usb_rx_interrupt: bad pipetype %d in urb 0x%p", -- usb_pipetype(urb->pipe), -- urb); -- } -- etrax_usb_complete_urb(urb, -EPROTO); -- goto skip_out; -- } -- } -- -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- if ((usb_pipetype(urb->pipe) == PIPE_BULK) || -- (usb_pipetype(urb->pipe) == PIPE_CONTROL) || -- (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) { -- -- if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { -- /* We get nodata for empty data transactions, and the rx descriptor's -- hw_len field is not valid in that case. No data to copy in other -- words. */ -- } else { -- /* Make sure the data fits in the buffer. */ -- assert(urb_priv->rx_offset + myNextRxDesc->hw_len -- <= urb->transfer_buffer_length); -- -- memcpy(urb->transfer_buffer + urb_priv->rx_offset, -- phys_to_virt(myNextRxDesc->buf), myNextRxDesc->hw_len); -- urb_priv->rx_offset += myNextRxDesc->hw_len; -- } -- -- if (myNextRxDesc->status & IO_MASK(USB_IN_status, eot)) { -- if ((usb_pipetype(urb->pipe) == PIPE_CONTROL) && -- ((TxCtrlEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable)) == -- IO_STATE(USB_EP_command, enable, yes))) { -- /* The EP is still enabled, so the OUT packet used to ack -- the in data is probably not processed yet. If the EP -- sub pointer has not moved beyond urb_priv->last_sb mark -- it for a descriptor interrupt and complete the urb in -- the descriptor interrupt handler. -- */ -- USB_SB_Desc_t *sub = TxCtrlEPList[urb_priv->epid].sub ? phys_to_virt(TxCtrlEPList[urb_priv->epid].sub) : 0; -- -- while ((sub != NULL) && (sub != urb_priv->last_sb)) { -- sub = sub->next ? phys_to_virt(sub->next) : 0; -- } -- if (sub != NULL) { -- /* The urb has not been fully processed. */ -- urb_priv->urb_state = WAITING_FOR_DESCR_INTR; -- } else { -- warn("(CTRL) epid enabled and urb (0x%p) processed, ep->sub=0x%p", urb, (char*)TxCtrlEPList[urb_priv->epid].sub); -- etrax_usb_complete_urb(urb, 0); -- } -- } else { -- etrax_usb_complete_urb(urb, 0); -- } -- } -- -- } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- -- struct usb_iso_packet_descriptor *packet; -- -- if (urb_priv->urb_state == UNLINK) { -- info("Ignoring rx data for urb being unlinked."); -- goto skip_out; -- } else if (urb_priv->urb_state == NOT_STARTED) { -- info("What? Got rx data for urb that isn't started?"); -- goto skip_out; -- } -- -- packet = &urb->iso_frame_desc[urb_priv->isoc_packet_counter]; -- packet->status = 0; -- -- if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { -- /* We get nodata for empty data transactions, and the rx descriptor's -- hw_len field is not valid in that case. We copy 0 bytes however to -- stay in synch. */ -- packet->actual_length = 0; -- } else { -- packet->actual_length = myNextRxDesc->hw_len; -- /* Make sure the data fits in the buffer. */ -- assert(packet->actual_length <= packet->length); -- memcpy(urb->transfer_buffer + packet->offset, -- phys_to_virt(myNextRxDesc->buf), packet->actual_length); -- } -- -- /* Increment the packet counter. */ -- urb_priv->isoc_packet_counter++; -- -- /* Note that we don't care about the eot field in the rx descriptor's status. -- It will always be set for isoc traffic. */ -- if (urb->number_of_packets == urb_priv->isoc_packet_counter) { -- -- /* Out-of-synch diagnostics. */ -- curr_fm = (*R_USB_FM_NUMBER & 0x7ff); -- if (((prev_fm + urb_priv->isoc_packet_counter) % (0x7ff + 1)) != curr_fm) { -- /* This test is wrong, if there is more than one isoc -- in endpoint active it will always calculate wrong -- since prev_fm is shared by all endpoints. -- -- FIXME Make this check per URB using urb->start_frame. -- */ -- dbg_isoc("Out of synch? Previous frame = %d, current frame = %d", -- prev_fm, curr_fm); -- -- } -- prev_fm = curr_fm; -- -- /* Complete the urb with status OK. */ -- etrax_usb_complete_isoc_urb(urb, 0); -- } -- } -- -- skip_out: -- -- /* DMA IN cache bug. Flush the DMA IN buffer from the cache. (struct etrax_dma_descr -- has the same layout as USB_IN_Desc for the relevant fields.) */ -- prepare_rx_descriptor((struct etrax_dma_descr*)myNextRxDesc); -- -- myPrevRxDesc = myNextRxDesc; -- myPrevRxDesc->command |= IO_MASK(USB_IN_command, eol); -- myLastRxDesc->command &= ~IO_MASK(USB_IN_command, eol); -- myLastRxDesc = myPrevRxDesc; -- -- myNextRxDesc->status = 0; -- myNextRxDesc = phys_to_virt(myNextRxDesc->next); -- } -- -- restore_flags(flags); -- -- DBFEXIT; -- -- return IRQ_HANDLED; --} -- -- --/* This function will unlink the SB descriptors associated with this urb. */ --static int etrax_remove_from_sb_list(struct urb *urb) --{ -- USB_SB_Desc_t *next_sb, *first_sb, *last_sb; -- etrax_urb_priv_t *urb_priv; -- int i = 0; -- -- DBFENTER; -- -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- /* Just a sanity check. Since we don't fiddle with the DMA list the EP descriptor -- doesn't really need to be disabled, it's just that we expect it to be. */ -- if (usb_pipetype(urb->pipe) == PIPE_BULK) { -- assert(!(TxBulkEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable))); -- } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -- assert(!(TxCtrlEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable))); -- } -- -- first_sb = urb_priv->first_sb; -- last_sb = urb_priv->last_sb; -- -- assert(first_sb); -- assert(last_sb); -- -- while (first_sb != last_sb) { -- next_sb = (USB_SB_Desc_t *)phys_to_virt(first_sb->next); -- kmem_cache_free(usb_desc_cache, first_sb); -- first_sb = next_sb; -- i++; -- } -- kmem_cache_free(usb_desc_cache, last_sb); -- i++; -- dbg_sb("%d SB descriptors freed", i); -- /* Compare i with urb->number_of_packets for Isoc traffic. -- Should be same when calling unlink_urb */ -- -- DBFEXIT; -- -- return i; --} -- --static int etrax_usb_submit_bulk_urb(struct urb *urb) --{ -- int epid; -- int empty; -- unsigned long flags; -- etrax_urb_priv_t *urb_priv; -- -- DBFENTER; -- -- /* Epid allocation, empty check and list add must be protected. -- Read about this in etrax_usb_submit_ctrl_urb. */ -- -- spin_lock_irqsave(&urb_list_lock, flags); -- epid = etrax_usb_setup_epid(urb); -- if (epid == -1) { -- DBFEXIT; -- spin_unlock_irqrestore(&urb_list_lock, flags); -- return -ENOMEM; -- } -- empty = urb_list_empty(epid); -- urb_list_add(urb, epid); -- spin_unlock_irqrestore(&urb_list_lock, flags); -- -- dbg_bulk("Adding bulk %s urb 0x%lx to %s list, epid %d", -- usb_pipein(urb->pipe) ? "IN" : "OUT", (unsigned long)urb, empty ? "empty" : "", epid); -- -- /* Mark the urb as being in progress. */ -- urb->status = -EINPROGRESS; -- -- /* Setup the hcpriv data. */ -- urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG); -- assert(urb_priv != NULL); -- /* This sets rx_offset to 0. */ -- urb_priv->urb_state = NOT_STARTED; -- urb->hcpriv = urb_priv; -- -- if (empty) { -- etrax_usb_add_to_bulk_sb_list(urb, epid); -- } -- -- DBFEXIT; -- -- return 0; --} -- --static void etrax_usb_add_to_bulk_sb_list(struct urb *urb, int epid) --{ -- USB_SB_Desc_t *sb_desc; -- etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- unsigned long flags; -- char maxlen; -- -- DBFENTER; -- -- dbg_bulk("etrax_usb_add_to_bulk_sb_list, urb 0x%lx", (unsigned long)urb); -- -- maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -- -- sb_desc = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- assert(sb_desc != NULL); -- memset(sb_desc, 0, sizeof(USB_SB_Desc_t)); -- -- -- if (usb_pipeout(urb->pipe)) { -- -- dbg_bulk("Grabbing bulk OUT, urb 0x%lx, epid %d", (unsigned long)urb, epid); -- -- /* This is probably a sanity check of the bulk transaction length -- not being larger than 64 kB. */ -- if (urb->transfer_buffer_length > 0xffff) { -- panic("urb->transfer_buffer_length > 0xffff"); -- } -- -- sb_desc->sw_len = urb->transfer_buffer_length; -- -- /* The rem field is don't care if it's not a full-length transfer, so setting -- it shouldn't hurt. Also, rem isn't used for OUT traffic. */ -- sb_desc->command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, out) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- /* The full field is set to yes, even if we don't actually check that this is -- a full-length transfer (i.e., that transfer_buffer_length % maxlen = 0). -- Setting full prevents the USB controller from sending an empty packet in -- that case. However, if URB_ZERO_PACKET was set we want that. */ -- if (!(urb->transfer_flags & URB_ZERO_PACKET)) { -- sb_desc->command |= IO_STATE(USB_SB_command, full, yes); -- } -- -- sb_desc->buf = virt_to_phys(urb->transfer_buffer); -- sb_desc->next = 0; -- -- } else if (usb_pipein(urb->pipe)) { -- -- dbg_bulk("Grabbing bulk IN, urb 0x%lx, epid %d", (unsigned long)urb, epid); -- -- sb_desc->sw_len = urb->transfer_buffer_length ? -- (urb->transfer_buffer_length - 1) / maxlen + 1 : 0; -- -- /* The rem field is don't care if it's not a full-length transfer, so setting -- it shouldn't hurt. */ -- sb_desc->command = -- (IO_FIELD(USB_SB_command, rem, -- urb->transfer_buffer_length % maxlen) | -- IO_STATE(USB_SB_command, tt, in) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- sb_desc->buf = 0; -- sb_desc->next = 0; -- } -- -- urb_priv->first_sb = sb_desc; -- urb_priv->last_sb = sb_desc; -- urb_priv->epid = epid; -- -- urb->hcpriv = urb_priv; -- -- /* Reset toggle bits and reset error count. */ -- save_flags(flags); -- cli(); -- -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- -- /* FIXME: Is this a special case since the hold field is checked, -- or should we check hold in a lot of other cases as well? */ -- if (*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) { -- panic("Hold was set in %s", __FUNCTION__); -- } -- -- /* Reset error counters (regardless of which direction this traffic is). */ -- *R_USB_EPT_DATA &= -- ~(IO_MASK(R_USB_EPT_DATA, error_count_in) | -- IO_MASK(R_USB_EPT_DATA, error_count_out)); -- -- /* Software must preset the toggle bits. */ -- if (usb_pipeout(urb->pipe)) { -- char toggle = -- usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe)); -- *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_out); -- *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_out, toggle); -- } else { -- char toggle = -- usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe)); -- *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_in); -- *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_in, toggle); -- } -- -- /* Assert that the EP descriptor is disabled. */ -- assert(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable))); -- -- /* The reason we set the EP's sub pointer directly instead of -- walking the SB list and linking it last in the list is that we only -- have one active urb at a time (the rest are queued). */ -- -- /* Note that we cannot have interrupts running when we have set the SB descriptor -- but the EP is not yet enabled. If a bulk eot happens for another EP, we will -- find this EP disabled and with a SB != 0, which will make us think that it's done. */ -- TxBulkEPList[epid].sub = virt_to_phys(sb_desc); -- TxBulkEPList[epid].hw_len = 0; -- /* Note that we don't have to fill in the ep_id field since this -- was done when we allocated the EP descriptors in init_tx_bulk_ep. */ -- -- /* Check if the dummy list is already with us (if several urbs were queued). */ -- if (TxBulkEPList[epid].next != virt_to_phys(&TxBulkDummyEPList[epid][0])) { -- -- dbg_bulk("Inviting dummy list to the party for urb 0x%lx, epid %d", -- (unsigned long)urb, epid); -- -- /* The last EP in the dummy list already has its next pointer set to -- TxBulkEPList[epid].next. */ -- -- /* We don't need to check if the DMA is at this EP or not before changing the -- next pointer, since we will do it in one 32-bit write (EP descriptors are -- 32-bit aligned). */ -- TxBulkEPList[epid].next = virt_to_phys(&TxBulkDummyEPList[epid][0]); -- } -- /* Enable the EP descr. */ -- dbg_bulk("Enabling bulk EP for urb 0x%lx, epid %d", (unsigned long)urb, epid); -- TxBulkEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -- -- /* Everything is set up, safe to enable interrupts again. */ -- restore_flags(flags); -- -- /* If the DMA bulk channel isn't running, we need to restart it if it -- has stopped at the last EP descriptor (DMA stopped because there was -- no more traffic) or if it has stopped at a dummy EP with the intr flag -- set (DMA stopped because we were too slow in inserting new traffic). */ -- if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) { -- -- USB_EP_Desc_t *ep; -- ep = (USB_EP_Desc_t *)phys_to_virt(*R_DMA_CH8_SUB0_EP); -- dbg_bulk("DMA channel not running in add"); -- dbg_bulk("DMA is at 0x%lx", (unsigned long)ep); -- -- if (*R_DMA_CH8_SUB0_EP == virt_to_phys(&TxBulkEPList[NBR_OF_EPIDS - 1]) || -- (ep->command & 0x8) >> 3) { -- *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); -- /* Update/restart the bulk start timer since we just started the channel. */ -- mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); -- /* Update/restart the bulk eot timer since we just inserted traffic. */ -- mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -- } -- } -- -- DBFEXIT; --} -- --static void etrax_usb_complete_bulk_urb(struct urb *urb, int status) --{ -- etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- int epid = urb_priv->epid; -- unsigned long flags; -- -- DBFENTER; -- -- if (status) -- warn("Completing bulk urb with status %d.", status); -- -- dbg_bulk("Completing bulk urb 0x%lx for epid %d", (unsigned long)urb, epid); -- -- /* Update the urb list. */ -- urb_list_del(urb, epid); -- -- /* For an IN pipe, we always set the actual length, regardless of whether there was -- an error or not (which means the device driver can use the data if it wants to). */ -- if (usb_pipein(urb->pipe)) { -- urb->actual_length = urb_priv->rx_offset; -- } else { -- /* Set actual_length for OUT urbs also; the USB mass storage driver seems -- to want that. We wouldn't know of any partial writes if there was an error. */ -- if (status == 0) { -- urb->actual_length = urb->transfer_buffer_length; -- } else { -- urb->actual_length = 0; -- } -- } -- -- /* FIXME: Is there something of the things below we shouldn't do if there was an error? -- Like, maybe we shouldn't toggle the toggle bits, or maybe we shouldn't insert more traffic. */ -- -- save_flags(flags); -- cli(); -- -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- -- /* We need to fiddle with the toggle bits because the hardware doesn't do it for us. */ -- if (usb_pipeout(urb->pipe)) { -- char toggle = -- IO_EXTRACT(R_USB_EPT_DATA, t_out, *R_USB_EPT_DATA); -- usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), -- usb_pipeout(urb->pipe), toggle); -- } else { -- char toggle = -- IO_EXTRACT(R_USB_EPT_DATA, t_in, *R_USB_EPT_DATA); -- usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), -- usb_pipeout(urb->pipe), toggle); -- } -- restore_flags(flags); -- -- /* Remember to free the SBs. */ -- etrax_remove_from_sb_list(urb); -- kfree(urb_priv); -- urb->hcpriv = 0; -- -- /* If there are any more urb's in the list we'd better start sending */ -- if (!urb_list_empty(epid)) { -- -- struct urb *new_urb; -- -- /* Get the first urb. */ -- new_urb = urb_list_first(epid); -- assert(new_urb); -- -- dbg_bulk("More bulk for epid %d", epid); -- -- etrax_usb_add_to_bulk_sb_list(new_urb, epid); -- } -- -- urb->status = status; -- -- /* We let any non-zero status from the layer above have precedence. */ -- if (status == 0) { -- /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's max length) -- is to be treated as an error. */ -- if (urb->transfer_flags & URB_SHORT_NOT_OK) { -- if (usb_pipein(urb->pipe) && -- (urb->actual_length != -- usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)))) { -- urb->status = -EREMOTEIO; -- } -- } -- } -- -- if (urb->complete) { -- urb->complete(urb, NULL); -- } -- -- if (urb_list_empty(epid)) { -- /* This means that this EP is now free, deconfigure it. */ -- etrax_usb_free_epid(epid); -- -- /* No more traffic; time to clean up. -- Must set sub pointer to 0, since we look at the sub pointer when handling -- the bulk eot interrupt. */ -- -- dbg_bulk("No bulk for epid %d", epid); -- -- TxBulkEPList[epid].sub = 0; -- -- /* Unlink the dummy list. */ -- -- dbg_bulk("Kicking dummy list out of party for urb 0x%lx, epid %d", -- (unsigned long)urb, epid); -- -- /* No need to wait for the DMA before changing the next pointer. -- The modulo NBR_OF_EPIDS isn't actually necessary, since we will never use -- the last one (INVALID_EPID) for actual traffic. */ -- TxBulkEPList[epid].next = -- virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); -- } -- -- DBFEXIT; --} -- --static int etrax_usb_submit_ctrl_urb(struct urb *urb) --{ -- int epid; -- int empty; -- unsigned long flags; -- etrax_urb_priv_t *urb_priv; -- -- DBFENTER; -- -- /* FIXME: Return -ENXIO if there is already a queued urb for this endpoint? */ -- -- /* Epid allocation, empty check and list add must be protected. -- -- Epid allocation because if we find an existing epid for this endpoint an urb might be -- completed (emptying the list) before we add the new urb to the list, causing the epid -- to be de-allocated. We would then start the transfer with an invalid epid -> epid attn. -- -- Empty check and add because otherwise we might conclude that the list is not empty, -- after which it becomes empty before we add the new urb to the list, causing us not to -- insert the new traffic into the SB list. */ -- -- spin_lock_irqsave(&urb_list_lock, flags); -- epid = etrax_usb_setup_epid(urb); -- if (epid == -1) { -- spin_unlock_irqrestore(&urb_list_lock, flags); -- DBFEXIT; -- return -ENOMEM; -- } -- empty = urb_list_empty(epid); -- urb_list_add(urb, epid); -- spin_unlock_irqrestore(&urb_list_lock, flags); -- -- dbg_ctrl("Adding ctrl urb 0x%lx to %s list, epid %d", -- (unsigned long)urb, empty ? "empty" : "", epid); -- -- /* Mark the urb as being in progress. */ -- urb->status = -EINPROGRESS; -- -- /* Setup the hcpriv data. */ -- urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG); -- assert(urb_priv != NULL); -- /* This sets rx_offset to 0. */ -- urb_priv->urb_state = NOT_STARTED; -- urb->hcpriv = urb_priv; -- -- if (empty) { -- etrax_usb_add_to_ctrl_sb_list(urb, epid); -- } -- -- DBFEXIT; -- -- return 0; --} -- --static void etrax_usb_add_to_ctrl_sb_list(struct urb *urb, int epid) --{ -- USB_SB_Desc_t *sb_desc_setup; -- USB_SB_Desc_t *sb_desc_data; -- USB_SB_Desc_t *sb_desc_status; -- -- etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- -- unsigned long flags; -- char maxlen; -- -- DBFENTER; -- -- maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -- -- sb_desc_setup = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- assert(sb_desc_setup != NULL); -- sb_desc_status = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- assert(sb_desc_status != NULL); -- -- /* Initialize the mandatory setup SB descriptor (used only in control transfers) */ -- sb_desc_setup->sw_len = 8; -- sb_desc_setup->command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, setup) | -- IO_STATE(USB_SB_command, full, yes) | -- IO_STATE(USB_SB_command, eot, yes)); -- -- sb_desc_setup->buf = virt_to_phys(urb->setup_packet); -- -- if (usb_pipeout(urb->pipe)) { -- dbg_ctrl("Transfer for epid %d is OUT", epid); -- -- /* If this Control OUT transfer has an optional data stage we add an OUT token -- before the mandatory IN (status) token, hence the reordered SB list */ -- -- sb_desc_setup->next = virt_to_phys(sb_desc_status); -- if (urb->transfer_buffer) { -- -- dbg_ctrl("This OUT transfer has an extra data stage"); -- -- sb_desc_data = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- assert(sb_desc_data != NULL); -- -- sb_desc_setup->next = virt_to_phys(sb_desc_data); -- -- sb_desc_data->sw_len = urb->transfer_buffer_length; -- sb_desc_data->command = (IO_STATE(USB_SB_command, tt, out) | -- IO_STATE(USB_SB_command, full, yes) | -- IO_STATE(USB_SB_command, eot, yes)); -- sb_desc_data->buf = virt_to_phys(urb->transfer_buffer); -- sb_desc_data->next = virt_to_phys(sb_desc_status); -- } -- -- sb_desc_status->sw_len = 1; -- sb_desc_status->command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, in) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, intr, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- sb_desc_status->buf = 0; -- sb_desc_status->next = 0; -- -- } else if (usb_pipein(urb->pipe)) { -- -- dbg_ctrl("Transfer for epid %d is IN", epid); -- dbg_ctrl("transfer_buffer_length = %d", urb->transfer_buffer_length); -- dbg_ctrl("rem is calculated to %d", urb->transfer_buffer_length % maxlen); -- -- sb_desc_data = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- assert(sb_desc_data != NULL); -- -- sb_desc_setup->next = virt_to_phys(sb_desc_data); -- -- sb_desc_data->sw_len = urb->transfer_buffer_length ? -- (urb->transfer_buffer_length - 1) / maxlen + 1 : 0; -- dbg_ctrl("sw_len got %d", sb_desc_data->sw_len); -- -- sb_desc_data->command = -- (IO_FIELD(USB_SB_command, rem, -- urb->transfer_buffer_length % maxlen) | -- IO_STATE(USB_SB_command, tt, in) | -- IO_STATE(USB_SB_command, eot, yes)); -- -- sb_desc_data->buf = 0; -- sb_desc_data->next = virt_to_phys(sb_desc_status); -- -- /* Read comment at zout_buffer declaration for an explanation to this. */ -- sb_desc_status->sw_len = 1; -- sb_desc_status->command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, zout) | -- IO_STATE(USB_SB_command, full, yes) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, intr, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- sb_desc_status->buf = virt_to_phys(&zout_buffer[0]); -- sb_desc_status->next = 0; -- } -- -- urb_priv->first_sb = sb_desc_setup; -- urb_priv->last_sb = sb_desc_status; -- urb_priv->epid = epid; -- -- urb_priv->urb_state = STARTED; -- -- /* Reset toggle bits and reset error count, remember to di and ei */ -- /* Warning: it is possible that this locking doesn't work with bottom-halves */ -- -- save_flags(flags); -- cli(); -- -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- if (*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) { -- panic("Hold was set in %s", __FUNCTION__); -- } -- -- -- /* FIXME: Compare with etrax_usb_add_to_bulk_sb_list where the toggle bits -- are set to a specific value. Why the difference? Read "Transfer and Toggle Bits -- in Designer's Reference, p. 8 - 11. */ -- *R_USB_EPT_DATA &= -- ~(IO_MASK(R_USB_EPT_DATA, error_count_in) | -- IO_MASK(R_USB_EPT_DATA, error_count_out) | -- IO_MASK(R_USB_EPT_DATA, t_in) | -- IO_MASK(R_USB_EPT_DATA, t_out)); -- -- /* Since we use the rx interrupt to complete ctrl urbs, we can enable interrupts now -- (i.e. we don't check the sub pointer on an eot interrupt like we do for bulk traffic). */ -- restore_flags(flags); -- -- /* Assert that the EP descriptor is disabled. */ -- assert(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable))); -- -- /* Set up and enable the EP descriptor. */ -- TxCtrlEPList[epid].sub = virt_to_phys(sb_desc_setup); -- TxCtrlEPList[epid].hw_len = 0; -- TxCtrlEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -- -- /* We start the DMA sub channel without checking if it's running or not, because: -- 1) If it's already running, issuing the start command is a nop. -- 2) We avoid a test-and-set race condition. */ -- *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start); -- -- DBFEXIT; --} -- --static void etrax_usb_complete_ctrl_urb(struct urb *urb, int status) --{ -- etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- int epid = urb_priv->epid; -- -- DBFENTER; -- -- if (status) -- warn("Completing ctrl urb with status %d.", status); -- -- dbg_ctrl("Completing ctrl epid %d, urb 0x%lx", epid, (unsigned long)urb); -- -- /* Remove this urb from the list. */ -- urb_list_del(urb, epid); -- -- /* For an IN pipe, we always set the actual length, regardless of whether there was -- an error or not (which means the device driver can use the data if it wants to). */ -- if (usb_pipein(urb->pipe)) { -- urb->actual_length = urb_priv->rx_offset; -- } -- -- /* FIXME: Is there something of the things below we shouldn't do if there was an error? -- Like, maybe we shouldn't insert more traffic. */ -- -- /* Remember to free the SBs. */ -- etrax_remove_from_sb_list(urb); -- kfree(urb_priv); -- urb->hcpriv = 0; -- -- /* If there are any more urbs in the list we'd better start sending. */ -- if (!urb_list_empty(epid)) { -- struct urb *new_urb; -- -- /* Get the first urb. */ -- new_urb = urb_list_first(epid); -- assert(new_urb); -- -- dbg_ctrl("More ctrl for epid %d, first urb = 0x%lx", epid, (unsigned long)new_urb); -- -- etrax_usb_add_to_ctrl_sb_list(new_urb, epid); -- } -- -- urb->status = status; -- -- /* We let any non-zero status from the layer above have precedence. */ -- if (status == 0) { -- /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's max length) -- is to be treated as an error. */ -- if (urb->transfer_flags & URB_SHORT_NOT_OK) { -- if (usb_pipein(urb->pipe) && -- (urb->actual_length != -- usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)))) { -- urb->status = -EREMOTEIO; -- } -- } -- } -- -- if (urb->complete) { -- urb->complete(urb, NULL); -- } -- -- if (urb_list_empty(epid)) { -- /* No more traffic. Time to clean up. */ -- etrax_usb_free_epid(epid); -- /* Must set sub pointer to 0. */ -- dbg_ctrl("No ctrl for epid %d", epid); -- TxCtrlEPList[epid].sub = 0; -- } -- -- DBFEXIT; --} -- --static int etrax_usb_submit_intr_urb(struct urb *urb) --{ -- -- int epid; -- -- DBFENTER; -- -- if (usb_pipeout(urb->pipe)) { -- /* Unsupported transfer type. -- We don't support interrupt out traffic. (If we do, we can't support -- intervals for neither in or out traffic, but are forced to schedule all -- interrupt traffic in one frame.) */ -- return -EINVAL; -- } -- -- epid = etrax_usb_setup_epid(urb); -- if (epid == -1) { -- DBFEXIT; -- return -ENOMEM; -- } -- -- if (!urb_list_empty(epid)) { -- /* There is already a queued urb for this endpoint. */ -- etrax_usb_free_epid(epid); -- return -ENXIO; -- } -- -- urb->status = -EINPROGRESS; -- -- dbg_intr("Add intr urb 0x%lx, to list, epid %d", (unsigned long)urb, epid); -- -- urb_list_add(urb, epid); -- etrax_usb_add_to_intr_sb_list(urb, epid); -- -- return 0; -- -- DBFEXIT; --} -- --static void etrax_usb_add_to_intr_sb_list(struct urb *urb, int epid) --{ -- -- volatile USB_EP_Desc_t *tmp_ep; -- volatile USB_EP_Desc_t *first_ep; -- -- char maxlen; -- int interval; -- int i; -- -- etrax_urb_priv_t *urb_priv; -- -- DBFENTER; -- -- maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -- interval = urb->interval; -- -- urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG); -- assert(urb_priv != NULL); -- urb->hcpriv = urb_priv; -- -- first_ep = &TxIntrEPList[0]; -- -- /* Round of the interval to 2^n, it is obvious that this code favours -- smaller numbers, but that is actually a good thing */ -- /* FIXME: The "rounding error" for larger intervals will be quite -- large. For in traffic this shouldn't be a problem since it will only -- mean that we "poll" more often. */ -- for (i = 0; interval; i++) { -- interval = interval >> 1; -- } -- interval = 1 << (i - 1); -- -- dbg_intr("Interval rounded to %d", interval); -- -- tmp_ep = first_ep; -- i = 0; -- do { -- if (tmp_ep->command & IO_MASK(USB_EP_command, eof)) { -- if ((i % interval) == 0) { -- /* Insert the traffic ep after tmp_ep */ -- USB_EP_Desc_t *ep_desc; -- USB_SB_Desc_t *sb_desc; -- -- dbg_intr("Inserting EP for epid %d", epid); -- -- ep_desc = (USB_EP_Desc_t *) -- kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- sb_desc = (USB_SB_Desc_t *) -- kmem_cache_alloc(usb_desc_cache, SLAB_FLAG); -- assert(ep_desc != NULL); -- CHECK_ALIGN(ep_desc); -- assert(sb_desc != NULL); -- -- ep_desc->sub = virt_to_phys(sb_desc); -- ep_desc->hw_len = 0; -- ep_desc->command = (IO_FIELD(USB_EP_command, epid, epid) | -- IO_STATE(USB_EP_command, enable, yes)); -- -- -- /* Round upwards the number of packets of size maxlen -- that this SB descriptor should receive. */ -- sb_desc->sw_len = urb->transfer_buffer_length ? -- (urb->transfer_buffer_length - 1) / maxlen + 1 : 0; -- sb_desc->next = 0; -- sb_desc->buf = 0; -- sb_desc->command = -- (IO_FIELD(USB_SB_command, rem, urb->transfer_buffer_length % maxlen) | -- IO_STATE(USB_SB_command, tt, in) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- ep_desc->next = tmp_ep->next; -- tmp_ep->next = virt_to_phys(ep_desc); -- } -- i++; -- } -- tmp_ep = (USB_EP_Desc_t *)phys_to_virt(tmp_ep->next); -- } while (tmp_ep != first_ep); -- -- -- /* Note that first_sb/last_sb doesn't apply to interrupt traffic. */ -- urb_priv->epid = epid; -- -- /* We start the DMA sub channel without checking if it's running or not, because: -- 1) If it's already running, issuing the start command is a nop. -- 2) We avoid a test-and-set race condition. */ -- *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start); -- -- DBFEXIT; --} -- -- -- --static void etrax_usb_complete_intr_urb(struct urb *urb, int status) --{ -- etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- int epid = urb_priv->epid; -- -- DBFENTER; -- -- if (status) -- warn("Completing intr urb with status %d.", status); -- -- dbg_intr("Completing intr epid %d, urb 0x%lx", epid, (unsigned long)urb); -- -- urb->status = status; -- urb->actual_length = urb_priv->rx_offset; -- -- dbg_intr("interrupt urb->actual_length = %d", urb->actual_length); -- -- /* We let any non-zero status from the layer above have precedence. */ -- if (status == 0) { -- /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's max length) -- is to be treated as an error. */ -- if (urb->transfer_flags & URB_SHORT_NOT_OK) { -- if (urb->actual_length != -- usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) { -- urb->status = -EREMOTEIO; -- } -- } -- } -- -- /* The driver will resubmit the URB so we need to remove it first */ -- etrax_usb_unlink_urb(urb, 0); -- if (urb->complete) { -- urb->complete(urb, NULL); -- } -- -- DBFEXIT; --} -- -- --static int etrax_usb_submit_isoc_urb(struct urb *urb) --{ -- int epid; -- unsigned long flags; -- -- DBFENTER; -- -- dbg_isoc("Submitting isoc urb = 0x%lx", (unsigned long)urb); -- -- /* Epid allocation, empty check and list add must be protected. -- Read about this in etrax_usb_submit_ctrl_urb. */ -- -- spin_lock_irqsave(&urb_list_lock, flags); -- /* Is there an active epid for this urb ? */ -- epid = etrax_usb_setup_epid(urb); -- if (epid == -1) { -- DBFEXIT; -- spin_unlock_irqrestore(&urb_list_lock, flags); -- return -ENOMEM; -- } -- -- /* Ok, now we got valid endpoint, lets insert some traffic */ -- -- urb->status = -EINPROGRESS; -- -- /* Find the last urb in the URB_List and add this urb after that one. -- Also add the traffic, that is do an etrax_usb_add_to_isoc_sb_list. This -- is important to make this in "real time" since isochronous traffic is -- time sensitive. */ -- -- dbg_isoc("Adding isoc urb to (possibly empty) list"); -- urb_list_add(urb, epid); -- etrax_usb_add_to_isoc_sb_list(urb, epid); -- spin_unlock_irqrestore(&urb_list_lock, flags); -- -- DBFEXIT; -- -- return 0; --} -- --static void etrax_usb_check_error_isoc_ep(const int epid) --{ -- unsigned long int flags; -- int error_code; -- __u32 r_usb_ept_data; -- -- /* We can't read R_USB_EPID_ATTN here since it would clear the iso_eof, -- bulk_eot and epid_attn interrupts. So we just check the status of -- the epid without testing if for it in R_USB_EPID_ATTN. */ -- -- -- save_flags(flags); -- cli(); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- /* Note that although there are separate R_USB_EPT_DATA and R_USB_EPT_DATA_ISO -- registers, they are located at the same address and are of the same size. -- In other words, this read should be ok for isoc also. */ -- r_usb_ept_data = *R_USB_EPT_DATA; -- restore_flags(flags); -- -- error_code = IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data); -- -- if (r_usb_ept_data & IO_MASK(R_USB_EPT_DATA, hold)) { -- warn("Hold was set for epid %d.", epid); -- return; -- } -- -- if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA_ISO, error_code, no_error)) { -- -- /* This indicates that the SB list of the ept was completed before -- new data was appended to it. This is not an error, but indicates -- large system or USB load and could possibly cause trouble for -- very timing sensitive USB device drivers so we log it. -- */ -- info("Isoc. epid %d disabled with no error", epid); -- return; -- -- } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA_ISO, error_code, stall)) { -- /* Not really a protocol error, just says that the endpoint gave -- a stall response. Note that error_code cannot be stall for isoc. */ -- panic("Isoc traffic cannot stall"); -- -- } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA_ISO, error_code, bus_error)) { -- /* Two devices responded to a transaction request. Must be resolved -- by software. FIXME: Reset ports? */ -- panic("Bus error for epid %d." -- " Two devices responded to transaction request", -- epid); -- -- } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, buffer_error)) { -- /* DMA overrun or underrun. */ -- warn("Buffer overrun/underrun for epid %d. DMA too busy?", epid); -- -- /* It seems that error_code = buffer_error in -- R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS -- are the same error. */ -- } --} -- -- --static void etrax_usb_add_to_isoc_sb_list(struct urb *urb, int epid) --{ -- -- int i = 0; -- -- etrax_urb_priv_t *urb_priv; -- USB_SB_Desc_t *prev_sb_desc, *next_sb_desc, *temp_sb_desc; -- -- DBFENTER; -- -- prev_sb_desc = next_sb_desc = temp_sb_desc = NULL; -- -- urb_priv = kzalloc(sizeof(etrax_urb_priv_t), GFP_ATOMIC); -- assert(urb_priv != NULL); -- -- urb->hcpriv = urb_priv; -- urb_priv->epid = epid; -- -- if (usb_pipeout(urb->pipe)) { -- -- if (urb->number_of_packets == 0) panic("etrax_usb_add_to_isoc_sb_list 0 packets\n"); -- -- dbg_isoc("Transfer for epid %d is OUT", epid); -- dbg_isoc("%d packets in URB", urb->number_of_packets); -- -- /* Create one SB descriptor for each packet and link them together. */ -- for (i = 0; i < urb->number_of_packets; i++) { -- if (!urb->iso_frame_desc[i].length) -- continue; -- -- next_sb_desc = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_ATOMIC); -- assert(next_sb_desc != NULL); -- -- if (urb->iso_frame_desc[i].length > 0) { -- -- next_sb_desc->command = (IO_STATE(USB_SB_command, tt, out) | -- IO_STATE(USB_SB_command, eot, yes)); -- -- next_sb_desc->sw_len = urb->iso_frame_desc[i].length; -- next_sb_desc->buf = virt_to_phys((char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset); -- -- /* Check if full length transfer. */ -- if (urb->iso_frame_desc[i].length == -- usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) { -- next_sb_desc->command |= IO_STATE(USB_SB_command, full, yes); -- } -- } else { -- dbg_isoc("zero len packet"); -- next_sb_desc->command = (IO_FIELD(USB_SB_command, rem, 0) | -- IO_STATE(USB_SB_command, tt, zout) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, full, yes)); -- -- next_sb_desc->sw_len = 1; -- next_sb_desc->buf = virt_to_phys(&zout_buffer[0]); -- } -- -- /* First SB descriptor that belongs to this urb */ -- if (i == 0) -- urb_priv->first_sb = next_sb_desc; -- else -- prev_sb_desc->next = virt_to_phys(next_sb_desc); -- -- prev_sb_desc = next_sb_desc; -- } -- -- next_sb_desc->command |= (IO_STATE(USB_SB_command, intr, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- next_sb_desc->next = 0; -- urb_priv->last_sb = next_sb_desc; -- -- } else if (usb_pipein(urb->pipe)) { -- -- dbg_isoc("Transfer for epid %d is IN", epid); -- dbg_isoc("transfer_buffer_length = %d", urb->transfer_buffer_length); -- dbg_isoc("rem is calculated to %d", urb->iso_frame_desc[urb->number_of_packets - 1].length); -- -- /* Note that in descriptors for periodic traffic are not consumed. This means that -- the USB controller never propagates in the SB list. In other words, if there already -- is an SB descriptor in the list for this EP we don't have to do anything. */ -- if (TxIsocEPList[epid].sub == 0) { -- dbg_isoc("Isoc traffic not already running, allocating SB"); -- -- next_sb_desc = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_ATOMIC); -- assert(next_sb_desc != NULL); -- -- next_sb_desc->command = (IO_STATE(USB_SB_command, tt, in) | -- IO_STATE(USB_SB_command, eot, yes) | -- IO_STATE(USB_SB_command, eol, yes)); -- -- next_sb_desc->next = 0; -- next_sb_desc->sw_len = 1; /* Actual number of packets is not relevant -- for periodic in traffic as long as it is more -- than zero. Set to 1 always. */ -- next_sb_desc->buf = 0; -- -- /* The rem field is don't care for isoc traffic, so we don't set it. */ -- -- /* Only one SB descriptor that belongs to this urb. */ -- urb_priv->first_sb = next_sb_desc; -- urb_priv->last_sb = next_sb_desc; -- -- } else { -- -- dbg_isoc("Isoc traffic already running, just setting first/last_sb"); -- -- /* Each EP for isoc in will have only one SB descriptor, setup when submitting the -- already active urb. Note that even though we may have several first_sb/last_sb -- pointing at the same SB descriptor, they are freed only once (when the list has -- become empty). */ -- urb_priv->first_sb = phys_to_virt(TxIsocEPList[epid].sub); -- urb_priv->last_sb = phys_to_virt(TxIsocEPList[epid].sub); -- return; -- } -- -- } -- -- /* Find the spot to insert this urb and add it. */ -- if (TxIsocEPList[epid].sub == 0) { -- /* First SB descriptor inserted in this list (in or out). */ -- dbg_isoc("Inserting SB desc first in list"); -- TxIsocEPList[epid].hw_len = 0; -- TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -- -- } else { -- /* Isochronous traffic is already running, insert new traffic last (only out). */ -- dbg_isoc("Inserting SB desc last in list"); -- temp_sb_desc = phys_to_virt(TxIsocEPList[epid].sub); -- while ((temp_sb_desc->command & IO_MASK(USB_SB_command, eol)) != -- IO_STATE(USB_SB_command, eol, yes)) { -- assert(temp_sb_desc->next); -- temp_sb_desc = phys_to_virt(temp_sb_desc->next); -- } -- dbg_isoc("Appending list on desc 0x%p", temp_sb_desc); -- -- /* Next pointer must be set before eol is removed. */ -- temp_sb_desc->next = virt_to_phys(urb_priv->first_sb); -- /* Clear the previous end of list flag since there is a new in the -- added SB descriptor list. */ -- temp_sb_desc->command &= ~IO_MASK(USB_SB_command, eol); -- -- if (!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { -- /* 8.8.5 in Designer's Reference says we should check for and correct -- any errors in the EP here. That should not be necessary if epid_attn -- is handled correctly, so we assume all is ok. */ -- dbg_isoc("EP disabled"); -- etrax_usb_check_error_isoc_ep(epid); -- -- /* The SB list was exhausted. */ -- if (virt_to_phys(urb_priv->last_sb) != TxIsocEPList[epid].sub) { -- /* The new sublist did not get processed before the EP was -- disabled. Setup the EP again. */ -- dbg_isoc("Set EP sub to new list"); -- TxIsocEPList[epid].hw_len = 0; -- TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -- } -- } -- } -- -- if (urb->transfer_flags & URB_ISO_ASAP) { -- /* The isoc transfer should be started as soon as possible. The start_frame -- field is a return value if URB_ISO_ASAP was set. Comparing R_USB_FM_NUMBER -- with a USB Chief trace shows that the first isoc IN token is sent 2 frames -- later. I'm not sure how this affects usage of the start_frame field by the -- device driver, or how it affects things when USB_ISO_ASAP is not set, so -- therefore there's no compensation for the 2 frame "lag" here. */ -- urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); -- TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -- urb_priv->urb_state = STARTED; -- dbg_isoc("URB_ISO_ASAP set, urb->start_frame set to %d", urb->start_frame); -- } else { -- /* Not started yet. */ -- urb_priv->urb_state = NOT_STARTED; -- dbg_isoc("urb_priv->urb_state set to NOT_STARTED"); -- } -- -- /* We start the DMA sub channel without checking if it's running or not, because: -- 1) If it's already running, issuing the start command is a nop. -- 2) We avoid a test-and-set race condition. */ -- *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -- -- DBFEXIT; --} -- --static void etrax_usb_complete_isoc_urb(struct urb *urb, int status) --{ -- etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- int epid = urb_priv->epid; -- int auto_resubmit = 0; -- -- DBFENTER; -- dbg_isoc("complete urb 0x%p, status %d", urb, status); -- -- if (status) -- warn("Completing isoc urb with status %d.", status); -- -- if (usb_pipein(urb->pipe)) { -- int i; -- -- /* Make that all isoc packets have status and length set before -- completing the urb. */ -- for (i = urb_priv->isoc_packet_counter; i < urb->number_of_packets; i++) { -- urb->iso_frame_desc[i].actual_length = 0; -- urb->iso_frame_desc[i].status = -EPROTO; -- } -- -- urb_list_del(urb, epid); -- -- if (!list_empty(&urb_list[epid])) { -- ((etrax_urb_priv_t *)(urb_list_first(epid)->hcpriv))->urb_state = STARTED; -- } else { -- unsigned long int flags; -- if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -- /* The EP was enabled, disable it and wait. */ -- TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -- -- /* Ah, the luxury of busy-wait. */ -- while (*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])); -- } -- -- etrax_remove_from_sb_list(urb); -- TxIsocEPList[epid].sub = 0; -- TxIsocEPList[epid].hw_len = 0; -- -- save_flags(flags); -- cli(); -- etrax_usb_free_epid(epid); -- restore_flags(flags); -- } -- -- urb->hcpriv = 0; -- kfree(urb_priv); -- -- /* Release allocated bandwidth. */ -- usb_release_bandwidth(urb->dev, urb, 0); -- } else if (usb_pipeout(urb->pipe)) { -- int freed_descr; -- -- dbg_isoc("Isoc out urb complete 0x%p", urb); -- -- /* Update the urb list. */ -- urb_list_del(urb, epid); -- -- freed_descr = etrax_remove_from_sb_list(urb); -- dbg_isoc("freed %d descriptors of %d packets", freed_descr, urb->number_of_packets); -- assert(freed_descr == urb->number_of_packets); -- urb->hcpriv = 0; -- kfree(urb_priv); -- -- /* Release allocated bandwidth. */ -- usb_release_bandwidth(urb->dev, urb, 0); -- } -- -- urb->status = status; -- if (urb->complete) { -- urb->complete(urb, NULL); -- } -- -- if (auto_resubmit) { -- /* Check that urb was not unlinked by the complete callback. */ -- if (__urb_list_entry(urb, epid)) { -- /* Move this one down the list. */ -- urb_list_move_last(urb, epid); -- -- /* Mark the now first urb as started (may already be). */ -- ((etrax_urb_priv_t *)(urb_list_first(epid)->hcpriv))->urb_state = STARTED; -- -- /* Must set this to 0 since this urb is still active after -- completion. */ -- urb_priv->isoc_packet_counter = 0; -- } else { -- warn("(ISOC) automatic resubmit urb 0x%p removed by complete.", urb); -- } -- } -- -- DBFEXIT; --} -- --static void etrax_usb_complete_urb(struct urb *urb, int status) --{ -- switch (usb_pipetype(urb->pipe)) { -- case PIPE_BULK: -- etrax_usb_complete_bulk_urb(urb, status); -- break; -- case PIPE_CONTROL: -- etrax_usb_complete_ctrl_urb(urb, status); -- break; -- case PIPE_INTERRUPT: -- etrax_usb_complete_intr_urb(urb, status); -- break; -- case PIPE_ISOCHRONOUS: -- etrax_usb_complete_isoc_urb(urb, status); -- break; -- default: -- err("Unknown pipetype"); -- } --} -- -- -- --static irqreturn_t etrax_usb_hc_interrupt_top_half(int irq, void *vhc) --{ -- usb_interrupt_registers_t *reg; -- unsigned long flags; -- __u32 irq_mask; -- __u8 status; -- __u32 epid_attn; -- __u16 port_status_1; -- __u16 port_status_2; -- __u32 fm_number; -- -- DBFENTER; -- -- /* Read critical registers into local variables, do kmalloc afterwards. */ -- save_flags(flags); -- cli(); -- -- irq_mask = *R_USB_IRQ_MASK_READ; -- /* Reading R_USB_STATUS clears the ctl_status interrupt. Note that R_USB_STATUS -- must be read before R_USB_EPID_ATTN since reading the latter clears the -- ourun and perror fields of R_USB_STATUS. */ -- status = *R_USB_STATUS; -- -- /* Reading R_USB_EPID_ATTN clears the iso_eof, bulk_eot and epid_attn interrupts. */ -- epid_attn = *R_USB_EPID_ATTN; -- -- /* Reading R_USB_RH_PORT_STATUS_1 and R_USB_RH_PORT_STATUS_2 clears the -- port_status interrupt. */ -- port_status_1 = *R_USB_RH_PORT_STATUS_1; -- port_status_2 = *R_USB_RH_PORT_STATUS_2; -- -- /* Reading R_USB_FM_NUMBER clears the sof interrupt. */ -- /* Note: the lower 11 bits contain the actual frame number, sent with each sof. */ -- fm_number = *R_USB_FM_NUMBER; -- -- restore_flags(flags); -- -- reg = (usb_interrupt_registers_t *)kmem_cache_alloc(top_half_reg_cache, SLAB_ATOMIC); -- -- assert(reg != NULL); -- -- reg->hc = (etrax_hc_t *)vhc; -- -- /* Now put register values into kmalloc'd area. */ -- reg->r_usb_irq_mask_read = irq_mask; -- reg->r_usb_status = status; -- reg->r_usb_epid_attn = epid_attn; -- reg->r_usb_rh_port_status_1 = port_status_1; -- reg->r_usb_rh_port_status_2 = port_status_2; -- reg->r_usb_fm_number = fm_number; -- -- INIT_WORK(®->usb_bh, etrax_usb_hc_interrupt_bottom_half, reg); -- schedule_work(®->usb_bh); -- -- DBFEXIT; -- -- return IRQ_HANDLED; --} -- --static void etrax_usb_hc_interrupt_bottom_half(void *data) --{ -- usb_interrupt_registers_t *reg = (usb_interrupt_registers_t *)data; -- __u32 irq_mask = reg->r_usb_irq_mask_read; -- -- DBFENTER; -- -- /* Interrupts are handled in order of priority. */ -- if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, epid_attn)) { -- etrax_usb_hc_epid_attn_interrupt(reg); -- } -- if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, port_status)) { -- etrax_usb_hc_port_status_interrupt(reg); -- } -- if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, ctl_status)) { -- etrax_usb_hc_ctl_status_interrupt(reg); -- } -- if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, iso_eof)) { -- etrax_usb_hc_isoc_eof_interrupt(); -- } -- if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, bulk_eot)) { -- /* Update/restart the bulk start timer since obviously the channel is running. */ -- mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); -- /* Update/restart the bulk eot timer since we just received an bulk eot interrupt. */ -- mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -- -- etrax_usb_hc_bulk_eot_interrupt(0); -- } -- -- kmem_cache_free(top_half_reg_cache, reg); -- -- DBFEXIT; --} -- -- --void etrax_usb_hc_isoc_eof_interrupt(void) --{ -- struct urb *urb; -- etrax_urb_priv_t *urb_priv; -- int epid; -- unsigned long flags; -- -- DBFENTER; -- -- /* Do not check the invalid epid (it has a valid sub pointer). */ -- for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -- -- /* Do not check the invalid epid (it has a valid sub pointer). */ -- if ((epid == DUMMY_EPID) || (epid == INVALID_EPID)) -- continue; -- -- /* Disable interrupts to block the isoc out descriptor interrupt handler -- from being called while the isoc EPID list is being checked. -- */ -- save_flags(flags); -- cli(); -- -- if (TxIsocEPList[epid].sub == 0) { -- /* Nothing here to see. */ -- restore_flags(flags); -- continue; -- } -- -- /* Get the first urb (if any). */ -- urb = urb_list_first(epid); -- if (urb == 0) { -- warn("Ignoring NULL urb"); -- restore_flags(flags); -- continue; -- } -- if (usb_pipein(urb->pipe)) { -- -- /* Sanity check. */ -- assert(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -- -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- if (urb_priv->urb_state == NOT_STARTED) { -- -- /* If ASAP is not set and urb->start_frame is the current frame, -- start the transfer. */ -- if (!(urb->transfer_flags & URB_ISO_ASAP) && -- (urb->start_frame == (*R_USB_FM_NUMBER & 0x7ff))) { -- -- dbg_isoc("Enabling isoc IN EP descr for epid %d", epid); -- TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -- -- /* This urb is now active. */ -- urb_priv->urb_state = STARTED; -- continue; -- } -- } -- } -- restore_flags(flags); -- } -- -- DBFEXIT; -- --} -- --void etrax_usb_hc_bulk_eot_interrupt(int timer_induced) --{ -- int epid; -- -- /* The technique is to run one urb at a time, wait for the eot interrupt at which -- point the EP descriptor has been disabled. */ -- -- DBFENTER; -- dbg_bulk("bulk eot%s", timer_induced ? ", called by timer" : ""); -- -- for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -- -- if (!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) && -- (TxBulkEPList[epid].sub != 0)) { -- -- struct urb *urb; -- etrax_urb_priv_t *urb_priv; -- unsigned long flags; -- __u32 r_usb_ept_data; -- -- /* Found a disabled EP descriptor which has a non-null sub pointer. -- Verify that this ctrl EP descriptor got disabled no errors. -- FIXME: Necessary to check error_code? */ -- dbg_bulk("for epid %d?", epid); -- -- /* Get the first urb. */ -- urb = urb_list_first(epid); -- -- /* FIXME: Could this happen for valid reasons? Why did it disappear? Because of -- wrong unlinking? */ -- if (!urb) { -- warn("NULL urb for epid %d", epid); -- continue; -- } -- -- assert(urb); -- urb_priv = (etrax_urb_priv_t *)urb->hcpriv; -- assert(urb_priv); -- -- /* Sanity checks. */ -- assert(usb_pipetype(urb->pipe) == PIPE_BULK); -- if (phys_to_virt(TxBulkEPList[epid].sub) != urb_priv->last_sb) { -- err("bulk endpoint got disabled before reaching last sb"); -- } -- -- /* For bulk IN traffic, there seems to be a race condition between -- between the bulk eot and eop interrupts, or rather an uncertainty regarding -- the order in which they happen. Normally we expect the eop interrupt from -- DMA channel 9 to happen before the eot interrupt. -- -- Therefore, we complete the bulk IN urb in the rx interrupt handler instead. */ -- -- if (usb_pipein(urb->pipe)) { -- dbg_bulk("in urb, continuing"); -- continue; -- } -- -- save_flags(flags); -- cli(); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- r_usb_ept_data = *R_USB_EPT_DATA; -- restore_flags(flags); -- -- if (IO_EXTRACT(R_USB_EPT_DATA, error_code, r_usb_ept_data) == -- IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -- /* This means that the endpoint has no error, is disabled -- and had inserted traffic, i.e. transfer successfully completed. */ -- etrax_usb_complete_bulk_urb(urb, 0); -- } else { -- /* Shouldn't happen. We expect errors to be caught by epid attention. */ -- err("Found disabled bulk EP desc, error_code != no_error"); -- } -- } -- } -- -- /* Normally, we should find (at least) one disabled EP descriptor with a valid sub pointer. -- However, because of the uncertainty in the deliverance of the eop/eot interrupts, we may -- not. Also, we might find two disabled EPs when handling an eot interrupt, and then find -- none the next time. */ -- -- DBFEXIT; -- --} -- --void etrax_usb_hc_epid_attn_interrupt(usb_interrupt_registers_t *reg) --{ -- /* This function handles the epid attention interrupt. There are a variety of reasons -- for this interrupt to happen (Designer's Reference, p. 8 - 22 for the details): -- -- invalid ep_id - Invalid epid in an EP (EP disabled). -- stall - Not strictly an error condition (EP disabled). -- 3rd error - Three successive transaction errors (EP disabled). -- buffer ourun - Buffer overrun or underrun (EP disabled). -- past eof1 - Intr or isoc transaction proceeds past EOF1. -- near eof - Intr or isoc transaction would not fit inside the frame. -- zout transfer - If zout transfer for a bulk endpoint (EP disabled). -- setup transfer - If setup transfer for a non-ctrl endpoint (EP disabled). */ -- -- int epid; -- -- -- DBFENTER; -- -- assert(reg != NULL); -- -- /* Note that we loop through all epids. We still want to catch errors for -- the invalid one, even though we might handle them differently. */ -- for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -- -- if (test_bit(epid, (void *)®->r_usb_epid_attn)) { -- -- struct urb *urb; -- __u32 r_usb_ept_data; -- unsigned long flags; -- int error_code; -- -- save_flags(flags); -- cli(); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -- nop(); -- /* Note that although there are separate R_USB_EPT_DATA and R_USB_EPT_DATA_ISO -- registers, they are located at the same address and are of the same size. -- In other words, this read should be ok for isoc also. */ -- r_usb_ept_data = *R_USB_EPT_DATA; -- restore_flags(flags); -- -- /* First some sanity checks. */ -- if (epid == INVALID_EPID) { -- /* FIXME: What if it became disabled? Could seriously hurt interrupt -- traffic. (Use do_intr_recover.) */ -- warn("Got epid_attn for INVALID_EPID (%d).", epid); -- err("R_USB_EPT_DATA = 0x%x", r_usb_ept_data); -- err("R_USB_STATUS = 0x%x", reg->r_usb_status); -- continue; -- } else if (epid == DUMMY_EPID) { -- /* We definitely don't care about these ones. Besides, they are -- always disabled, so any possible disabling caused by the -- epid attention interrupt is irrelevant. */ -- warn("Got epid_attn for DUMMY_EPID (%d).", epid); -- continue; -- } -- -- /* Get the first urb in the urb list for this epid. We blatantly assume -- that only the first urb could have caused the epid attention. -- (For bulk and ctrl, only one urb is active at any one time. For intr -- and isoc we remove them once they are completed.) */ -- urb = urb_list_first(epid); -- -- if (urb == NULL) { -- err("Got epid_attn for epid %i with no urb.", epid); -- err("R_USB_EPT_DATA = 0x%x", r_usb_ept_data); -- err("R_USB_STATUS = 0x%x", reg->r_usb_status); -- continue; -- } -- -- switch (usb_pipetype(urb->pipe)) { -- case PIPE_BULK: -- warn("Got epid attn for bulk endpoint, epid %d", epid); -- break; -- case PIPE_CONTROL: -- warn("Got epid attn for control endpoint, epid %d", epid); -- break; -- case PIPE_INTERRUPT: -- warn("Got epid attn for interrupt endpoint, epid %d", epid); -- break; -- case PIPE_ISOCHRONOUS: -- warn("Got epid attn for isochronous endpoint, epid %d", epid); -- break; -- } -- -- if (usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) { -- if (r_usb_ept_data & IO_MASK(R_USB_EPT_DATA, hold)) { -- warn("Hold was set for epid %d.", epid); -- continue; -- } -- } -- -- /* Even though error_code occupies bits 22 - 23 in both R_USB_EPT_DATA and -- R_USB_EPT_DATA_ISOC, we separate them here so we don't forget in other places. */ -- if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- error_code = IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data); -- } else { -- error_code = IO_EXTRACT(R_USB_EPT_DATA, error_code, r_usb_ept_data); -- } -- -- /* Using IO_STATE_VALUE on R_USB_EPT_DATA should be ok for isoc also. */ -- if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -- -- /* Isoc traffic doesn't have error_count_in/error_count_out. */ -- if ((usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) && -- (IO_EXTRACT(R_USB_EPT_DATA, error_count_in, r_usb_ept_data) == 3 || -- IO_EXTRACT(R_USB_EPT_DATA, error_count_out, r_usb_ept_data) == 3)) { -- /* 3rd error. */ -- warn("3rd error for epid %i", epid); -- etrax_usb_complete_urb(urb, -EPROTO); -- -- } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { -- -- warn("Perror for epid %d", epid); -- -- if (!(r_usb_ept_data & IO_MASK(R_USB_EPT_DATA, valid))) { -- /* invalid ep_id */ -- panic("Perror because of invalid epid." -- " Deconfigured too early?"); -- } else { -- /* past eof1, near eof, zout transfer, setup transfer */ -- -- /* Dump the urb and the relevant EP descriptor list. */ -- -- __dump_urb(urb); -- __dump_ept_data(epid); -- __dump_ep_list(usb_pipetype(urb->pipe)); -- -- panic("Something wrong with DMA descriptor contents." -- " Too much traffic inserted?"); -- } -- } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { -- /* buffer ourun */ -- panic("Buffer overrun/underrun for epid %d. DMA too busy?", epid); -- } -- -- } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, stall)) { -- /* Not really a protocol error, just says that the endpoint gave -- a stall response. Note that error_code cannot be stall for isoc. */ -- if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -- panic("Isoc traffic cannot stall"); -- } -- -- warn("Stall for epid %d", epid); -- etrax_usb_complete_urb(urb, -EPIPE); -- -- } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, bus_error)) { -- /* Two devices responded to a transaction request. Must be resolved -- by software. FIXME: Reset ports? */ -- panic("Bus error for epid %d." -- " Two devices responded to transaction request", -- epid); -- -- } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, buffer_error)) { -- /* DMA overrun or underrun. */ -- warn("Buffer overrun/underrun for epid %d. DMA too busy?", epid); -- -- /* It seems that error_code = buffer_error in -- R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS -- are the same error. */ -- etrax_usb_complete_urb(urb, -EPROTO); -- } -- } -- } -- -- DBFEXIT; -- --} -- --void etrax_usb_bulk_start_timer_func(unsigned long dummy) --{ -- -- /* We might enable an EP descriptor behind the current DMA position when it's about -- to decide that there are no more bulk traffic and it should stop the bulk channel. -- Therefore we periodically check if the bulk channel is stopped and there is an -- enabled bulk EP descriptor, in which case we start the bulk channel. */ -- dbg_bulk("bulk_start_timer timed out."); -- -- if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) { -- int epid; -- -- dbg_bulk("Bulk DMA channel not running."); -- -- for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -- if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -- dbg_bulk("Found enabled EP for epid %d, starting bulk channel.\n", -- epid); -- *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); -- -- /* Restart the bulk eot timer since we just started the bulk channel. */ -- mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -- -- /* No need to search any further. */ -- break; -- } -- } -- } else { -- dbg_bulk("Bulk DMA channel running."); -- } --} -- --void etrax_usb_hc_port_status_interrupt(usb_interrupt_registers_t *reg) --{ -- etrax_hc_t *hc = reg->hc; -- __u16 r_usb_rh_port_status_1 = reg->r_usb_rh_port_status_1; -- __u16 r_usb_rh_port_status_2 = reg->r_usb_rh_port_status_2; -- -- DBFENTER; -- -- /* The Etrax RH does not include a wPortChange register, so this has to be handled in software -- (by saving the old port status value for comparison when the port status interrupt happens). -- See section 11.16.2.6.2 in the USB 1.1 spec for details. */ -- -- dbg_rh("hc->rh.prev_wPortStatus_1 = 0x%x", hc->rh.prev_wPortStatus_1); -- dbg_rh("hc->rh.prev_wPortStatus_2 = 0x%x", hc->rh.prev_wPortStatus_2); -- dbg_rh("r_usb_rh_port_status_1 = 0x%x", r_usb_rh_port_status_1); -- dbg_rh("r_usb_rh_port_status_2 = 0x%x", r_usb_rh_port_status_2); -- -- /* C_PORT_CONNECTION is set on any transition. */ -- hc->rh.wPortChange_1 |= -- ((r_usb_rh_port_status_1 & (1 << RH_PORT_CONNECTION)) != -- (hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_CONNECTION))) ? -- (1 << RH_PORT_CONNECTION) : 0; -- -- hc->rh.wPortChange_2 |= -- ((r_usb_rh_port_status_2 & (1 << RH_PORT_CONNECTION)) != -- (hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_CONNECTION))) ? -- (1 << RH_PORT_CONNECTION) : 0; -- -- /* C_PORT_ENABLE is _only_ set on a one to zero transition, i.e. when -- the port is disabled, not when it's enabled. */ -- hc->rh.wPortChange_1 |= -- ((hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_ENABLE)) -- && !(r_usb_rh_port_status_1 & (1 << RH_PORT_ENABLE))) ? -- (1 << RH_PORT_ENABLE) : 0; -- -- hc->rh.wPortChange_2 |= -- ((hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_ENABLE)) -- && !(r_usb_rh_port_status_2 & (1 << RH_PORT_ENABLE))) ? -- (1 << RH_PORT_ENABLE) : 0; -- -- /* C_PORT_SUSPEND is set to one when the device has transitioned out -- of the suspended state, i.e. when suspend goes from one to zero. */ -- hc->rh.wPortChange_1 |= -- ((hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_SUSPEND)) -- && !(r_usb_rh_port_status_1 & (1 << RH_PORT_SUSPEND))) ? -- (1 << RH_PORT_SUSPEND) : 0; -- -- hc->rh.wPortChange_2 |= -- ((hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_SUSPEND)) -- && !(r_usb_rh_port_status_2 & (1 << RH_PORT_SUSPEND))) ? -- (1 << RH_PORT_SUSPEND) : 0; -- -- -- /* C_PORT_RESET is set when reset processing on this port is complete. */ -- hc->rh.wPortChange_1 |= -- ((hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_RESET)) -- && !(r_usb_rh_port_status_1 & (1 << RH_PORT_RESET))) ? -- (1 << RH_PORT_RESET) : 0; -- -- hc->rh.wPortChange_2 |= -- ((hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_RESET)) -- && !(r_usb_rh_port_status_2 & (1 << RH_PORT_RESET))) ? -- (1 << RH_PORT_RESET) : 0; -- -- /* Save the new values for next port status change. */ -- hc->rh.prev_wPortStatus_1 = r_usb_rh_port_status_1; -- hc->rh.prev_wPortStatus_2 = r_usb_rh_port_status_2; -- -- dbg_rh("hc->rh.wPortChange_1 set to 0x%x", hc->rh.wPortChange_1); -- dbg_rh("hc->rh.wPortChange_2 set to 0x%x", hc->rh.wPortChange_2); -- -- DBFEXIT; -- --} -- --void etrax_usb_hc_ctl_status_interrupt(usb_interrupt_registers_t *reg) --{ -- DBFENTER; -- -- /* FIXME: What should we do if we get ourun or perror? Dump the EP and SB -- list for the corresponding epid? */ -- if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { -- panic("USB controller got ourun."); -- } -- if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { -- -- /* Before, etrax_usb_do_intr_recover was called on this epid if it was -- an interrupt pipe. I don't see how re-enabling all EP descriptors -- will help if there was a programming error. */ -- panic("USB controller got perror."); -- } -- -- if (reg->r_usb_status & IO_MASK(R_USB_STATUS, device_mode)) { -- /* We should never operate in device mode. */ -- panic("USB controller in device mode."); -- } -- -- /* These if-statements could probably be nested. */ -- if (reg->r_usb_status & IO_MASK(R_USB_STATUS, host_mode)) { -- info("USB controller in host mode."); -- } -- if (reg->r_usb_status & IO_MASK(R_USB_STATUS, started)) { -- info("USB controller started."); -- } -- if (reg->r_usb_status & IO_MASK(R_USB_STATUS, running)) { -- info("USB controller running."); -- } -- -- DBFEXIT; -- --} -- -- --static int etrax_rh_submit_urb(struct urb *urb) --{ -- struct usb_device *usb_dev = urb->dev; -- etrax_hc_t *hc = usb_dev->bus->hcpriv; -- unsigned int pipe = urb->pipe; -- struct usb_ctrlrequest *cmd = (struct usb_ctrlrequest *) urb->setup_packet; -- void *data = urb->transfer_buffer; -- int leni = urb->transfer_buffer_length; -- int len = 0; -- int stat = 0; -- -- __u16 bmRType_bReq; -- __u16 wValue; -- __u16 wIndex; -- __u16 wLength; -- -- DBFENTER; -- -- /* FIXME: What is this interrupt urb that is sent to the root hub? */ -- if (usb_pipetype (pipe) == PIPE_INTERRUPT) { -- dbg_rh("Root-Hub submit IRQ: every %d ms", urb->interval); -- hc->rh.urb = urb; -- hc->rh.send = 1; -- /* FIXME: We could probably remove this line since it's done -- in etrax_rh_init_int_timer. (Don't remove it from -- etrax_rh_init_int_timer though.) */ -- hc->rh.interval = urb->interval; -- etrax_rh_init_int_timer(urb); -- DBFEXIT; -- -- return 0; -- } -- -- bmRType_bReq = cmd->bRequestType | (cmd->bRequest << 8); -- wValue = le16_to_cpu(cmd->wValue); -- wIndex = le16_to_cpu(cmd->wIndex); -- wLength = le16_to_cpu(cmd->wLength); -- -- dbg_rh("bmRType_bReq : 0x%04x (%d)", bmRType_bReq, bmRType_bReq); -- dbg_rh("wValue : 0x%04x (%d)", wValue, wValue); -- dbg_rh("wIndex : 0x%04x (%d)", wIndex, wIndex); -- dbg_rh("wLength : 0x%04x (%d)", wLength, wLength); -- -- switch (bmRType_bReq) { -- -- /* Request Destination: -- without flags: Device, -- RH_INTERFACE: interface, -- RH_ENDPOINT: endpoint, -- RH_CLASS means HUB here, -- RH_OTHER | RH_CLASS almost ever means HUB_PORT here -- */ -- -- case RH_GET_STATUS: -- *(__u16 *) data = cpu_to_le16 (1); -- OK (2); -- -- case RH_GET_STATUS | RH_INTERFACE: -- *(__u16 *) data = cpu_to_le16 (0); -- OK (2); -- -- case RH_GET_STATUS | RH_ENDPOINT: -- *(__u16 *) data = cpu_to_le16 (0); -- OK (2); -- -- case RH_GET_STATUS | RH_CLASS: -- *(__u32 *) data = cpu_to_le32 (0); -- OK (4); /* hub power ** */ -- -- case RH_GET_STATUS | RH_OTHER | RH_CLASS: -- if (wIndex == 1) { -- *((__u16*)data) = cpu_to_le16(hc->rh.prev_wPortStatus_1); -- *((__u16*)data + 1) = cpu_to_le16(hc->rh.wPortChange_1); -- } else if (wIndex == 2) { -- *((__u16*)data) = cpu_to_le16(hc->rh.prev_wPortStatus_2); -- *((__u16*)data + 1) = cpu_to_le16(hc->rh.wPortChange_2); -- } else { -- dbg_rh("RH_GET_STATUS whith invalid wIndex!"); -- OK(0); -- } -- -- OK(4); -- -- case RH_CLEAR_FEATURE | RH_ENDPOINT: -- switch (wValue) { -- case (RH_ENDPOINT_STALL): -- OK (0); -- } -- break; -- -- case RH_CLEAR_FEATURE | RH_CLASS: -- switch (wValue) { -- case (RH_C_HUB_OVER_CURRENT): -- OK (0); /* hub power over current ** */ -- } -- break; -- -- case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS: -- switch (wValue) { -- case (RH_PORT_ENABLE): -- if (wIndex == 1) { -- -- dbg_rh("trying to do disable port 1"); -- -- *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); -- -- while (hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)); -- *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no); -- dbg_rh("Port 1 is disabled"); -- -- } else if (wIndex == 2) { -- -- dbg_rh("trying to do disable port 2"); -- -- *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes); -- -- while (hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, yes)); -- *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no); -- dbg_rh("Port 2 is disabled"); -- -- } else { -- dbg_rh("RH_CLEAR_FEATURE->RH_PORT_ENABLE " -- "with invalid wIndex == %d!", wIndex); -- } -- -- OK (0); -- case (RH_PORT_SUSPEND): -- /* Opposite to suspend should be resume, so we'll do a resume. */ -- /* FIXME: USB 1.1, 11.16.2.2 says: -- "Clearing the PORT_SUSPEND feature causes a host-initiated resume -- on the specified port. If the port is not in the Suspended state, -- the hub should treat this request as a functional no-operation." -- Shouldn't we check if the port is in a suspended state before -- resuming? */ -- -- /* Make sure the controller isn't busy. */ -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- if (wIndex == 1) { -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, port1) | -- IO_STATE(R_USB_COMMAND, port_cmd, resume) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); -- } else if (wIndex == 2) { -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, port2) | -- IO_STATE(R_USB_COMMAND, port_cmd, resume) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); -- } else { -- dbg_rh("RH_CLEAR_FEATURE->RH_PORT_SUSPEND " -- "with invalid wIndex == %d!", wIndex); -- } -- -- OK (0); -- case (RH_PORT_POWER): -- OK (0); /* port power ** */ -- case (RH_C_PORT_CONNECTION): -- if (wIndex == 1) { -- hc->rh.wPortChange_1 &= ~(1 << RH_PORT_CONNECTION); -- } else if (wIndex == 2) { -- hc->rh.wPortChange_2 &= ~(1 << RH_PORT_CONNECTION); -- } else { -- dbg_rh("RH_CLEAR_FEATURE->RH_C_PORT_CONNECTION " -- "with invalid wIndex == %d!", wIndex); -- } -- -- OK (0); -- case (RH_C_PORT_ENABLE): -- if (wIndex == 1) { -- hc->rh.wPortChange_1 &= ~(1 << RH_PORT_ENABLE); -- } else if (wIndex == 2) { -- hc->rh.wPortChange_2 &= ~(1 << RH_PORT_ENABLE); -- } else { -- dbg_rh("RH_CLEAR_FEATURE->RH_C_PORT_ENABLE " -- "with invalid wIndex == %d!", wIndex); -- } -- OK (0); -- case (RH_C_PORT_SUSPEND): --/*** WR_RH_PORTSTAT(RH_PS_PSSC); */ -- OK (0); -- case (RH_C_PORT_OVER_CURRENT): -- OK (0); /* port power over current ** */ -- case (RH_C_PORT_RESET): -- if (wIndex == 1) { -- hc->rh.wPortChange_1 &= ~(1 << RH_PORT_RESET); -- } else if (wIndex == 2) { -- hc->rh.wPortChange_2 &= ~(1 << RH_PORT_RESET); -- } else { -- dbg_rh("RH_CLEAR_FEATURE->RH_C_PORT_RESET " -- "with invalid index == %d!", wIndex); -- } -- -- OK (0); -- -- } -- break; -- -- case RH_SET_FEATURE | RH_OTHER | RH_CLASS: -- switch (wValue) { -- case (RH_PORT_SUSPEND): -- -- /* Make sure the controller isn't busy. */ -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- if (wIndex == 1) { -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, port1) | -- IO_STATE(R_USB_COMMAND, port_cmd, suspend) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); -- } else if (wIndex == 2) { -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, port2) | -- IO_STATE(R_USB_COMMAND, port_cmd, suspend) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); -- } else { -- dbg_rh("RH_SET_FEATURE->RH_PORT_SUSPEND " -- "with invalid wIndex == %d!", wIndex); -- } -- -- OK (0); -- case (RH_PORT_RESET): -- if (wIndex == 1) { -- -- port_1_reset: -- dbg_rh("Doing reset of port 1"); -- -- /* Make sure the controller isn't busy. */ -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, port1) | -- IO_STATE(R_USB_COMMAND, port_cmd, reset) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); -- -- /* We must wait at least 10 ms for the device to recover. -- 15 ms should be enough. */ -- udelay(15000); -- -- /* Wait for reset bit to go low (should be done by now). */ -- while (hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, reset, yes)); -- -- /* If the port status is -- 1) connected and enabled then there is a device and everything is fine -- 2) neither connected nor enabled then there is no device, also fine -- 3) connected and not enabled then we try again -- (Yes, there are other port status combinations besides these.) */ -- -- if ((hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) && -- (hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, no))) { -- dbg_rh("Connected device on port 1, but port not enabled?" -- " Trying reset again."); -- goto port_2_reset; -- } -- -- /* Diagnostic printouts. */ -- if ((hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, connected, no)) && -- (hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, no))) { -- dbg_rh("No connected device on port 1"); -- } else if ((hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) && -- (hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes))) { -- dbg_rh("Connected device on port 1, port 1 enabled"); -- } -- -- } else if (wIndex == 2) { -- -- port_2_reset: -- dbg_rh("Doing reset of port 2"); -- -- /* Make sure the controller isn't busy. */ -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- /* Issue the reset command. */ -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, port2) | -- IO_STATE(R_USB_COMMAND, port_cmd, reset) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); -- -- /* We must wait at least 10 ms for the device to recover. -- 15 ms should be enough. */ -- udelay(15000); -- -- /* Wait for reset bit to go low (should be done by now). */ -- while (hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, reset, yes)); -- -- /* If the port status is -- 1) connected and enabled then there is a device and everything is fine -- 2) neither connected nor enabled then there is no device, also fine -- 3) connected and not enabled then we try again -- (Yes, there are other port status combinations besides these.) */ -- -- if ((hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, connected, yes)) && -- (hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, no))) { -- dbg_rh("Connected device on port 2, but port not enabled?" -- " Trying reset again."); -- goto port_2_reset; -- } -- -- /* Diagnostic printouts. */ -- if ((hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, connected, no)) && -- (hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, no))) { -- dbg_rh("No connected device on port 2"); -- } else if ((hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, connected, yes)) && -- (hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, yes))) { -- dbg_rh("Connected device on port 2, port 2 enabled"); -- } -- -- } else { -- dbg_rh("RH_SET_FEATURE->RH_PORT_RESET with invalid wIndex = %d", wIndex); -- } -- -- /* Make sure the controller isn't busy. */ -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- /* If all enabled ports were disabled the host controller goes down into -- started mode, so we need to bring it back into the running state. -- (This is safe even if it's already in the running state.) */ -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, nop) | -- IO_STATE(R_USB_COMMAND, port_cmd, reset) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -- -- dbg_rh("...Done"); -- OK(0); -- -- case (RH_PORT_POWER): -- OK (0); /* port power ** */ -- case (RH_PORT_ENABLE): -- /* There is no port enable command in the host controller, so if the -- port is already enabled, we do nothing. If not, we reset the port -- (with an ugly goto). */ -- -- if (wIndex == 1) { -- if (hc->rh.prev_wPortStatus_1 & -- IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, no)) { -- goto port_1_reset; -- } -- } else if (wIndex == 2) { -- if (hc->rh.prev_wPortStatus_2 & -- IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, no)) { -- goto port_2_reset; -- } -- } else { -- dbg_rh("RH_SET_FEATURE->RH_GET_STATUS with invalid wIndex = %d", wIndex); -- } -- OK (0); -- } -- break; -- -- case RH_SET_ADDRESS: -- hc->rh.devnum = wValue; -- dbg_rh("RH address set to: %d", hc->rh.devnum); -- OK (0); -- -- case RH_GET_DESCRIPTOR: -- switch ((wValue & 0xff00) >> 8) { -- case (0x01): /* device descriptor */ -- len = min_t(unsigned int, leni, min_t(unsigned int, sizeof (root_hub_dev_des), wLength)); -- memcpy (data, root_hub_dev_des, len); -- OK (len); -- case (0x02): /* configuration descriptor */ -- len = min_t(unsigned int, leni, min_t(unsigned int, sizeof (root_hub_config_des), wLength)); -- memcpy (data, root_hub_config_des, len); -- OK (len); -- case (0x03): /* string descriptors */ -- len = usb_root_hub_string (wValue & 0xff, -- 0xff, "ETRAX 100LX", -- data, wLength); -- if (len > 0) { -- OK(min(leni, len)); -- } else { -- stat = -EPIPE; -- } -- -- } -- break; -- -- case RH_GET_DESCRIPTOR | RH_CLASS: -- root_hub_hub_des[2] = hc->rh.numports; -- len = min_t(unsigned int, leni, min_t(unsigned int, sizeof (root_hub_hub_des), wLength)); -- memcpy (data, root_hub_hub_des, len); -- OK (len); -- -- case RH_GET_CONFIGURATION: -- *(__u8 *) data = 0x01; -- OK (1); -- -- case RH_SET_CONFIGURATION: -- OK (0); -- -- default: -- stat = -EPIPE; -- } -- -- urb->actual_length = len; -- urb->status = stat; -- urb->dev = NULL; -- if (urb->complete) { -- urb->complete(urb, NULL); -- } -- DBFEXIT; -- -- return 0; --} -- --static void --etrax_usb_bulk_eot_timer_func(unsigned long dummy) --{ -- /* Because of a race condition in the top half, we might miss a bulk eot. -- This timer "simulates" a bulk eot if we don't get one for a while, hopefully -- correcting the situation. */ -- dbg_bulk("bulk_eot_timer timed out."); -- etrax_usb_hc_bulk_eot_interrupt(1); --} -- --static void* --etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size, -- unsigned mem_flags, dma_addr_t *dma) --{ -- return kmalloc(size, mem_flags); --} -- --static void --etrax_usb_buffer_free(struct usb_bus *bus, size_t size, void *addr, dma_addr_t dma) --{ -- kfree(addr); --} -- -- --static struct device fake_device; -- --static int __init etrax_usb_hc_init(void) --{ -- static etrax_hc_t *hc; -- struct usb_bus *bus; -- struct usb_device *usb_rh; -- int i; -- -- DBFENTER; -- -- info("ETRAX 100LX USB-HCD %s (c) 2001-2003 Axis Communications AB\n", usb_hcd_version); -- -- hc = kmalloc(sizeof(etrax_hc_t), GFP_KERNEL); -- assert(hc != NULL); -- -- /* We use kmem_cache_* to make sure that all DMA desc. are dword aligned */ -- /* Note that we specify sizeof(USB_EP_Desc_t) as the size, but also allocate -- SB descriptors from this cache. This is ok since sizeof(USB_EP_Desc_t) == -- sizeof(USB_SB_Desc_t). */ -- -- usb_desc_cache = kmem_cache_create("usb_desc_cache", sizeof(USB_EP_Desc_t), 0, -- SLAB_HWCACHE_ALIGN, 0, 0); -- assert(usb_desc_cache != NULL); -- -- top_half_reg_cache = kmem_cache_create("top_half_reg_cache", -- sizeof(usb_interrupt_registers_t), -- 0, SLAB_HWCACHE_ALIGN, 0, 0); -- assert(top_half_reg_cache != NULL); -- -- isoc_compl_cache = kmem_cache_create("isoc_compl_cache", -- sizeof(usb_isoc_complete_data_t), -- 0, SLAB_HWCACHE_ALIGN, 0, 0); -- assert(isoc_compl_cache != NULL); -- -- etrax_usb_bus = bus = usb_alloc_bus(&etrax_usb_device_operations); -- hc->bus = bus; -- bus->bus_name="ETRAX 100LX"; -- bus->hcpriv = hc; -- -- /* Initialize RH to the default address. -- And make sure that we have no status change indication */ -- hc->rh.numports = 2; /* The RH has two ports */ -- hc->rh.devnum = 1; -- hc->rh.wPortChange_1 = 0; -- hc->rh.wPortChange_2 = 0; -- -- /* Also initate the previous values to zero */ -- hc->rh.prev_wPortStatus_1 = 0; -- hc->rh.prev_wPortStatus_2 = 0; -- -- /* Initialize the intr-traffic flags */ -- /* FIXME: This isn't used. (Besides, the error field isn't initialized.) */ -- hc->intr.sleeping = 0; -- hc->intr.wq = NULL; -- -- epid_usage_bitmask = 0; -- epid_out_traffic = 0; -- -- /* Mark the invalid epid as being used. */ -- set_bit(INVALID_EPID, (void *)&epid_usage_bitmask); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, INVALID_EPID); -- nop(); -- /* The valid bit should still be set ('invalid' is in our world; not the hardware's). */ -- *R_USB_EPT_DATA = (IO_STATE(R_USB_EPT_DATA, valid, yes) | -- IO_FIELD(R_USB_EPT_DATA, max_len, 1)); -- -- /* Mark the dummy epid as being used. */ -- set_bit(DUMMY_EPID, (void *)&epid_usage_bitmask); -- *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, DUMMY_EPID); -- nop(); -- *R_USB_EPT_DATA = (IO_STATE(R_USB_EPT_DATA, valid, no) | -- IO_FIELD(R_USB_EPT_DATA, max_len, 1)); -- -- /* Initialize the urb list by initiating a head for each list. */ -- for (i = 0; i < NBR_OF_EPIDS; i++) { -- INIT_LIST_HEAD(&urb_list[i]); -- } -- spin_lock_init(&urb_list_lock); -- -- INIT_LIST_HEAD(&urb_unlink_list); -- -- -- /* Initiate the bulk start timer. */ -- init_timer(&bulk_start_timer); -- bulk_start_timer.expires = jiffies + BULK_START_TIMER_INTERVAL; -- bulk_start_timer.function = etrax_usb_bulk_start_timer_func; -- add_timer(&bulk_start_timer); -- -- -- /* Initiate the bulk eot timer. */ -- init_timer(&bulk_eot_timer); -- bulk_eot_timer.expires = jiffies + BULK_EOT_TIMER_INTERVAL; -- bulk_eot_timer.function = etrax_usb_bulk_eot_timer_func; -- add_timer(&bulk_eot_timer); -- -- /* Set up the data structures for USB traffic. Note that this must be done before -- any interrupt that relies on sane DMA list occurrs. */ -- init_rx_buffers(); -- init_tx_bulk_ep(); -- init_tx_ctrl_ep(); -- init_tx_intr_ep(); -- init_tx_isoc_ep(); -- -- device_initialize(&fake_device); -- kobject_set_name(&fake_device.kobj, "etrax_usb"); -- kobject_add(&fake_device.kobj); -- kobject_uevent(&fake_device.kobj, KOBJ_ADD); -- hc->bus->controller = &fake_device; -- usb_register_bus(hc->bus); -- -- *R_IRQ_MASK2_SET = -- /* Note that these interrupts are not used. */ -- IO_STATE(R_IRQ_MASK2_SET, dma8_sub0_descr, set) | -- /* Sub channel 1 (ctrl) descr. interrupts are used. */ -- IO_STATE(R_IRQ_MASK2_SET, dma8_sub1_descr, set) | -- IO_STATE(R_IRQ_MASK2_SET, dma8_sub2_descr, set) | -- /* Sub channel 3 (isoc) descr. interrupts are used. */ -- IO_STATE(R_IRQ_MASK2_SET, dma8_sub3_descr, set); -- -- /* Note that the dma9_descr interrupt is not used. */ -- *R_IRQ_MASK2_SET = -- IO_STATE(R_IRQ_MASK2_SET, dma9_eop, set) | -- IO_STATE(R_IRQ_MASK2_SET, dma9_descr, set); -- -- /* FIXME: Enable iso_eof only when isoc traffic is running. */ -- *R_USB_IRQ_MASK_SET = -- IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set) | -- IO_STATE(R_USB_IRQ_MASK_SET, bulk_eot, set) | -- IO_STATE(R_USB_IRQ_MASK_SET, epid_attn, set) | -- IO_STATE(R_USB_IRQ_MASK_SET, port_status, set) | -- IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set); -- -- -- if (request_irq(ETRAX_USB_HC_IRQ, etrax_usb_hc_interrupt_top_half, 0, -- "ETRAX 100LX built-in USB (HC)", hc)) { -- err("Could not allocate IRQ %d for USB", ETRAX_USB_HC_IRQ); -- etrax_usb_hc_cleanup(); -- DBFEXIT; -- return -1; -- } -- -- if (request_irq(ETRAX_USB_RX_IRQ, etrax_usb_rx_interrupt, 0, -- "ETRAX 100LX built-in USB (Rx)", hc)) { -- err("Could not allocate IRQ %d for USB", ETRAX_USB_RX_IRQ); -- etrax_usb_hc_cleanup(); -- DBFEXIT; -- return -1; -- } -- -- if (request_irq(ETRAX_USB_TX_IRQ, etrax_usb_tx_interrupt, 0, -- "ETRAX 100LX built-in USB (Tx)", hc)) { -- err("Could not allocate IRQ %d for USB", ETRAX_USB_TX_IRQ); -- etrax_usb_hc_cleanup(); -- DBFEXIT; -- return -1; -- } -- -- /* R_USB_COMMAND: -- USB commands in host mode. The fields in this register should all be -- written to in one write. Do not read-modify-write one field at a time. A -- write to this register will trigger events in the USB controller and an -- incomplete command may lead to unpredictable results, and in worst case -- even to a deadlock in the controller. -- (Note however that the busy field is read-only, so no need to write to it.) */ -- -- /* Check the busy bit before writing to R_USB_COMMAND. */ -- -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- /* Reset the USB interface. */ -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, nop) | -- IO_STATE(R_USB_COMMAND, port_cmd, reset) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); -- -- /* Designer's Reference, p. 8 - 10 says we should Initate R_USB_FM_PSTART to 0x2A30 (10800), -- to guarantee that control traffic gets 10% of the bandwidth, and periodic transfer may -- allocate the rest (90%). This doesn't work though. Read on for a lenghty explanation. -- -- While there is a difference between rev. 2 and rev. 3 of the ETRAX 100LX regarding the NAK -- behaviour, it doesn't solve this problem. What happens is that a control transfer will not -- be interrupted in its data stage when PSTART happens (the point at which periodic traffic -- is started). Thus, if PSTART is set to 10800 and its IN or OUT token is NAKed until just before -- PSTART happens, it will continue the IN/OUT transfer as long as it's ACKed. After it's done, -- there may be too little time left for an isochronous transfer, causing an epid attention -- interrupt due to perror. The work-around for this is to let the control transfers run at the -- end of the frame instead of at the beginning, and will be interrupted just fine if it doesn't -- fit into the frame. However, since there will *always* be a control transfer at the beginning -- of the frame, regardless of what we set PSTART to, that transfer might be a 64-byte transfer -- which consumes up to 15% of the frame, leaving only 85% for periodic traffic. The solution to -- this would be to 'dummy allocate' 5% of the frame with the usb_claim_bandwidth function to make -- sure that the periodic transfers that are inserted will always fit in the frame. -- -- The idea was suggested that a control transfer could be split up into several 8 byte transfers, -- so that it would be interrupted by PSTART, but since this can't be done for an IN transfer this -- hasn't been implemented. -- -- The value 11960 is chosen to be just after the SOF token, with a couple of bit times extra -- for possible bit stuffing. */ -- -- *R_USB_FM_PSTART = IO_FIELD(R_USB_FM_PSTART, value, 11960); -- --#ifdef CONFIG_ETRAX_USB_HOST_PORT1 -- *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no); --#endif -- --#ifdef CONFIG_ETRAX_USB_HOST_PORT2 -- *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no); --#endif -- -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- /* Configure the USB interface as a host controller. */ -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, nop) | -- IO_STATE(R_USB_COMMAND, port_cmd, reset) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, host_config); -- -- /* Note: Do not reset any ports here. Await the port status interrupts, to have a controlled -- sequence of resetting the ports. If we reset both ports now, and there are devices -- on both ports, we will get a bus error because both devices will answer the set address -- request. */ -- -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- /* Start processing of USB traffic. */ -- *R_USB_COMMAND = -- IO_STATE(R_USB_COMMAND, port_sel, nop) | -- IO_STATE(R_USB_COMMAND, port_cmd, reset) | -- IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -- -- while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)); -- -- usb_rh = usb_alloc_dev(NULL, hc->bus, 0); -- hc->bus->root_hub = usb_rh; -- usb_rh->state = USB_STATE_ADDRESS; -- usb_rh->speed = USB_SPEED_FULL; -- usb_rh->devnum = 1; -- hc->bus->devnum_next = 2; -- usb_rh->ep0.desc.wMaxPacketSize = __const_cpu_to_le16(64); -- usb_get_device_descriptor(usb_rh, USB_DT_DEVICE_SIZE); -- usb_new_device(usb_rh); -- -- DBFEXIT; -- -- return 0; --} -- --static void etrax_usb_hc_cleanup(void) --{ -- DBFENTER; -- -- free_irq(ETRAX_USB_HC_IRQ, NULL); -- free_irq(ETRAX_USB_RX_IRQ, NULL); -- free_irq(ETRAX_USB_TX_IRQ, NULL); -- -- usb_deregister_bus(etrax_usb_bus); -- -- /* FIXME: call kmem_cache_destroy here? */ -- -- DBFEXIT; --} - --module_init(etrax_usb_hc_init); --module_exit(etrax_usb_hc_cleanup); -+/* Module hooks */ -+module_init(module_hcd_init); -+module_exit(module_hcd_exit); ---- linux-2.6.19.2.orig/drivers/usb/host/hc-crisv10.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/usb/host/hc-crisv10.c 2007-02-26 20:58:29.000000000 +0100 -@@ -0,0 +1,4684 @@ -+/* -+ * -+ * ETRAX 100LX USB Host Controller Driver -+ * -+ * Copyright (C) 2005, 2006 Axis Communications AB -+ * -+ * Author: Konrad Eriksson <konrad.eriksson@axis.se> -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/moduleparam.h> -+#include <linux/spinlock.h> -+#include <linux/usb.h> -+#include <linux/platform_device.h> -+ -+#include <asm/io.h> -+#include <asm/irq.h> -+#include <asm/arch/dma.h> -+#include <asm/arch/io_interface_mux.h> -+ -+#include "../core/hcd.h" -+#include "../core/hub.h" -+#include "hc-crisv10.h" -+#include "hc-cris-dbg.h" -+ -+ -+/***************************************************************************/ -+/***************************************************************************/ -+/* Host Controller settings */ -+/***************************************************************************/ -+/***************************************************************************/ -+ -+#define VERSION "1.00" -+#define COPYRIGHT "(c) 2005, 2006 Axis Communications AB" -+#define DESCRIPTION "ETRAX 100LX USB Host Controller" -+ -+#define ETRAX_USB_HC_IRQ USB_HC_IRQ_NBR -+#define ETRAX_USB_RX_IRQ USB_DMA_RX_IRQ_NBR -+#define ETRAX_USB_TX_IRQ USB_DMA_TX_IRQ_NBR -+ -+/* Number of physical ports in Etrax 100LX */ -+#define USB_ROOT_HUB_PORTS 2 -+ -+const char hc_name[] = "hc-crisv10"; -+const char product_desc[] = DESCRIPTION; -+ -+/* The number of epids is, among other things, used for pre-allocating -+ ctrl, bulk and isoc EP descriptors (one for each epid). -+ Assumed to be > 1 when initiating the DMA lists. */ -+#define NBR_OF_EPIDS 32 -+ -+/* Support interrupt traffic intervals up to 128 ms. */ -+#define MAX_INTR_INTERVAL 128 -+ -+/* If periodic traffic (intr or isoc) is to be used, then one entry in the EP -+ table must be "invalid". By this we mean that we shouldn't care about epid -+ attentions for this epid, or at least handle them differently from epid -+ attentions for "valid" epids. This define determines which one to use -+ (don't change it). */ -+#define INVALID_EPID 31 -+/* A special epid for the bulk dummys. */ -+#define DUMMY_EPID 30 -+ -+/* Module settings */ -+ -+MODULE_DESCRIPTION(DESCRIPTION); -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Konrad Eriksson <konrad.eriksson@axis.se>"); -+ -+ -+/* Module parameters */ -+ -+/* 0 = No ports enabled -+ 1 = Only port 1 enabled (on board ethernet on devboard) -+ 2 = Only port 2 enabled (external connector on devboard) -+ 3 = Both ports enabled -+*/ -+static unsigned int ports = 3; -+module_param(ports, uint, S_IRUGO); -+MODULE_PARM_DESC(ports, "Bitmask indicating USB ports to use"); -+ -+ -+/***************************************************************************/ -+/***************************************************************************/ -+/* Shared global variables for this module */ -+/***************************************************************************/ -+/***************************************************************************/ -+ -+/* EP descriptor lists for non period transfers. Must be 32-bit aligned. */ -+static volatile struct USB_EP_Desc TxBulkEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); -+ -+static volatile struct USB_EP_Desc TxCtrlEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); -+ -+/* EP descriptor lists for period transfers. Must be 32-bit aligned. */ -+static volatile struct USB_EP_Desc TxIntrEPList[MAX_INTR_INTERVAL] __attribute__ ((aligned (4))); -+static volatile struct USB_SB_Desc TxIntrSB_zout __attribute__ ((aligned (4))); -+ -+static volatile struct USB_EP_Desc TxIsocEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); -+static volatile struct USB_SB_Desc TxIsocSB_zout __attribute__ ((aligned (4))); -+ -+static volatile struct USB_SB_Desc TxIsocSBList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); -+ -+/* After each enabled bulk EP IN we put two disabled EP descriptors with the eol flag set, -+ causing the DMA to stop the DMA channel. The first of these two has the intr flag set, which -+ gives us a dma8_sub0_descr interrupt. When we receive this, we advance the DMA one step in the -+ EP list and then restart the bulk channel, thus forcing a switch between bulk EP descriptors -+ in each frame. */ -+static volatile struct USB_EP_Desc TxBulkDummyEPList[NBR_OF_EPIDS][2] __attribute__ ((aligned (4))); -+ -+/* List of URB pointers, where each points to the active URB for a epid. -+ For Bulk, Ctrl and Intr this means which URB that currently is added to -+ DMA lists (Isoc URBs are all directly added to DMA lists). As soon as -+ URB has completed is the queue examined and the first URB in queue is -+ removed and moved to the activeUrbList while its state change to STARTED and -+ its transfer(s) gets added to DMA list (exception Isoc where URBs enter -+ state STARTED directly and added transfers added to DMA lists). */ -+static struct urb *activeUrbList[NBR_OF_EPIDS]; -+ -+/* Additional software state info for each epid */ -+static struct etrax_epid epid_state[NBR_OF_EPIDS]; -+ -+/* Timer handles for bulk traffic timer used to avoid DMA bug where DMA stops -+ even if there is new data waiting to be processed */ -+static struct timer_list bulk_start_timer = TIMER_INITIALIZER(NULL, 0, 0); -+static struct timer_list bulk_eot_timer = TIMER_INITIALIZER(NULL, 0, 0); -+ -+/* We want the start timer to expire before the eot timer, because the former -+ might start traffic, thus making it unnecessary for the latter to time -+ out. */ -+#define BULK_START_TIMER_INTERVAL (HZ/50) /* 20 ms */ -+#define BULK_EOT_TIMER_INTERVAL (HZ/16) /* 60 ms */ -+ -+/* Delay before a URB completion happen when it's scheduled to be delayed */ -+#define LATER_TIMER_DELAY (HZ/50) /* 20 ms */ -+ -+/* Simplifying macros for checking software state info of a epid */ -+/* ----------------------------------------------------------------------- */ -+#define epid_inuse(epid) epid_state[epid].inuse -+#define epid_out_traffic(epid) epid_state[epid].out_traffic -+#define epid_isoc(epid) (epid_state[epid].type == PIPE_ISOCHRONOUS ? 1 : 0) -+#define epid_intr(epid) (epid_state[epid].type == PIPE_INTERRUPT ? 1 : 0) -+ -+ -+/***************************************************************************/ -+/***************************************************************************/ -+/* DEBUG FUNCTIONS */ -+/***************************************************************************/ -+/***************************************************************************/ -+/* Note that these functions are always available in their "__" variants, -+ for use in error situations. The "__" missing variants are controlled by -+ the USB_DEBUG_DESC/USB_DEBUG_URB macros. */ -+static void __dump_urb(struct urb* purb) -+{ -+ struct crisv10_urb_priv *urb_priv = purb->hcpriv; -+ int urb_num = -1; -+ if(urb_priv) { -+ urb_num = urb_priv->urb_num; -+ } -+ printk("\nURB:0x%x[%d]\n", (unsigned int)purb, urb_num); -+ printk("dev :0x%08lx\n", (unsigned long)purb->dev); -+ printk("pipe :0x%08x\n", purb->pipe); -+ printk("status :%d\n", purb->status); -+ printk("transfer_flags :0x%08x\n", purb->transfer_flags); -+ printk("transfer_buffer :0x%08lx\n", (unsigned long)purb->transfer_buffer); -+ printk("transfer_buffer_length:%d\n", purb->transfer_buffer_length); -+ printk("actual_length :%d\n", purb->actual_length); -+ printk("setup_packet :0x%08lx\n", (unsigned long)purb->setup_packet); -+ printk("start_frame :%d\n", purb->start_frame); -+ printk("number_of_packets :%d\n", purb->number_of_packets); -+ printk("interval :%d\n", purb->interval); -+ printk("error_count :%d\n", purb->error_count); -+ printk("context :0x%08lx\n", (unsigned long)purb->context); -+ printk("complete :0x%08lx\n\n", (unsigned long)purb->complete); -+} -+ -+static void __dump_in_desc(volatile struct USB_IN_Desc *in) -+{ -+ printk("\nUSB_IN_Desc at 0x%08lx\n", (unsigned long)in); -+ printk(" sw_len : 0x%04x (%d)\n", in->sw_len, in->sw_len); -+ printk(" command : 0x%04x\n", in->command); -+ printk(" next : 0x%08lx\n", in->next); -+ printk(" buf : 0x%08lx\n", in->buf); -+ printk(" hw_len : 0x%04x (%d)\n", in->hw_len, in->hw_len); -+ printk(" status : 0x%04x\n\n", in->status); -+} -+ -+static void __dump_sb_desc(volatile struct USB_SB_Desc *sb) -+{ -+ char tt = (sb->command & 0x30) >> 4; -+ char *tt_string; -+ -+ switch (tt) { -+ case 0: -+ tt_string = "zout"; -+ break; -+ case 1: -+ tt_string = "in"; -+ break; -+ case 2: -+ tt_string = "out"; -+ break; -+ case 3: -+ tt_string = "setup"; -+ break; -+ default: -+ tt_string = "unknown (weird)"; -+ } -+ -+ printk(" USB_SB_Desc at 0x%08lx ", (unsigned long)sb); -+ printk(" command:0x%04x (", sb->command); -+ printk("rem:%d ", (sb->command & 0x3f00) >> 8); -+ printk("full:%d ", (sb->command & 0x40) >> 6); -+ printk("tt:%d(%s) ", tt, tt_string); -+ printk("intr:%d ", (sb->command & 0x8) >> 3); -+ printk("eot:%d ", (sb->command & 0x2) >> 1); -+ printk("eol:%d)", sb->command & 0x1); -+ printk(" sw_len:0x%04x(%d)", sb->sw_len, sb->sw_len); -+ printk(" next:0x%08lx", sb->next); -+ printk(" buf:0x%08lx\n", sb->buf); -+} -+ -+ -+static void __dump_ep_desc(volatile struct USB_EP_Desc *ep) -+{ -+ printk("USB_EP_Desc at 0x%08lx ", (unsigned long)ep); -+ printk(" command:0x%04x (", ep->command); -+ printk("ep_id:%d ", (ep->command & 0x1f00) >> 8); -+ printk("enable:%d ", (ep->command & 0x10) >> 4); -+ printk("intr:%d ", (ep->command & 0x8) >> 3); -+ printk("eof:%d ", (ep->command & 0x2) >> 1); -+ printk("eol:%d)", ep->command & 0x1); -+ printk(" hw_len:0x%04x(%d)", ep->hw_len, ep->hw_len); -+ printk(" next:0x%08lx", ep->next); -+ printk(" sub:0x%08lx\n", ep->sub); -+} -+ -+static inline void __dump_ep_list(int pipe_type) -+{ -+ volatile struct USB_EP_Desc *ep; -+ volatile struct USB_EP_Desc *first_ep; -+ volatile struct USB_SB_Desc *sb; -+ -+ switch (pipe_type) -+ { -+ case PIPE_BULK: -+ first_ep = &TxBulkEPList[0]; -+ break; -+ case PIPE_CONTROL: -+ first_ep = &TxCtrlEPList[0]; -+ break; -+ case PIPE_INTERRUPT: -+ first_ep = &TxIntrEPList[0]; -+ break; -+ case PIPE_ISOCHRONOUS: -+ first_ep = &TxIsocEPList[0]; -+ break; -+ default: -+ warn("Cannot dump unknown traffic type"); -+ return; -+ } -+ ep = first_ep; -+ -+ printk("\n\nDumping EP list...\n\n"); -+ -+ do { -+ __dump_ep_desc(ep); -+ /* Cannot phys_to_virt on 0 as it turns into 80000000, which is != 0. */ -+ sb = ep->sub ? phys_to_virt(ep->sub) : 0; -+ while (sb) { -+ __dump_sb_desc(sb); -+ sb = sb->next ? phys_to_virt(sb->next) : 0; -+ } -+ ep = (volatile struct USB_EP_Desc *)(phys_to_virt(ep->next)); -+ -+ } while (ep != first_ep); -+} -+ -+static inline void __dump_ept_data(int epid) -+{ -+ unsigned long flags; -+ __u32 r_usb_ept_data; -+ -+ if (epid < 0 || epid > 31) { -+ printk("Cannot dump ept data for invalid epid %d\n", epid); -+ return; -+ } -+ -+ local_irq_save(flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -+ nop(); -+ r_usb_ept_data = *R_USB_EPT_DATA; -+ local_irq_restore(flags); -+ -+ printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", r_usb_ept_data, epid); -+ if (r_usb_ept_data == 0) { -+ /* No need for more detailed printing. */ -+ return; -+ } -+ printk(" valid : %d\n", (r_usb_ept_data & 0x80000000) >> 31); -+ printk(" hold : %d\n", (r_usb_ept_data & 0x40000000) >> 30); -+ printk(" error_count_in : %d\n", (r_usb_ept_data & 0x30000000) >> 28); -+ printk(" t_in : %d\n", (r_usb_ept_data & 0x08000000) >> 27); -+ printk(" low_speed : %d\n", (r_usb_ept_data & 0x04000000) >> 26); -+ printk(" port : %d\n", (r_usb_ept_data & 0x03000000) >> 24); -+ printk(" error_code : %d\n", (r_usb_ept_data & 0x00c00000) >> 22); -+ printk(" t_out : %d\n", (r_usb_ept_data & 0x00200000) >> 21); -+ printk(" error_count_out : %d\n", (r_usb_ept_data & 0x00180000) >> 19); -+ printk(" max_len : %d\n", (r_usb_ept_data & 0x0003f800) >> 11); -+ printk(" ep : %d\n", (r_usb_ept_data & 0x00000780) >> 7); -+ printk(" dev : %d\n", (r_usb_ept_data & 0x0000003f)); -+} -+ -+static inline void __dump_ept_data_iso(int epid) -+{ -+ unsigned long flags; -+ __u32 ept_data; -+ -+ if (epid < 0 || epid > 31) { -+ printk("Cannot dump ept data for invalid epid %d\n", epid); -+ return; -+ } -+ -+ local_irq_save(flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -+ nop(); -+ ept_data = *R_USB_EPT_DATA_ISO; -+ local_irq_restore(flags); -+ -+ printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", ept_data, epid); -+ if (ept_data == 0) { -+ /* No need for more detailed printing. */ -+ return; -+ } -+ printk(" valid : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, valid, -+ ept_data)); -+ printk(" port : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, port, -+ ept_data)); -+ printk(" error_code : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, -+ ept_data)); -+ printk(" max_len : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, max_len, -+ ept_data)); -+ printk(" ep : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, ep, -+ ept_data)); -+ printk(" dev : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, dev, -+ ept_data)); -+} -+ -+static inline void __dump_ept_data_list(void) -+{ -+ int i; -+ -+ printk("Dumping the whole R_USB_EPT_DATA list\n"); -+ -+ for (i = 0; i < 32; i++) { -+ __dump_ept_data(i); -+ } -+} -+ -+static void debug_epid(int epid) { -+ int i; -+ -+ if(epid_isoc(epid)) { -+ __dump_ept_data_iso(epid); -+ } else { -+ __dump_ept_data(epid); -+ } -+ -+ printk("Bulk:\n"); -+ for(i = 0; i < 32; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxBulkEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxBulkEPList[i])); -+ } -+ } -+ -+ printk("Ctrl:\n"); -+ for(i = 0; i < 32; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxCtrlEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxCtrlEPList[i])); -+ } -+ } -+ -+ printk("Intr:\n"); -+ for(i = 0; i < MAX_INTR_INTERVAL; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxIntrEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxIntrEPList[i])); -+ } -+ } -+ -+ printk("Isoc:\n"); -+ for(i = 0; i < 32; i++) { -+ if(IO_EXTRACT(USB_EP_command, epid, TxIsocEPList[i].command) == -+ epid) { -+ printk("%d: ", i); __dump_ep_desc(&(TxIsocEPList[i])); -+ } -+ } -+ -+ __dump_ept_data_list(); -+ __dump_ep_list(PIPE_INTERRUPT); -+ printk("\n\n"); -+} -+ -+ -+ -+char* hcd_status_to_str(__u8 bUsbStatus) { -+ static char hcd_status_str[128]; -+ hcd_status_str[0] = '\0'; -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, ourun, yes)) { -+ strcat(hcd_status_str, "ourun "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, perror, yes)) { -+ strcat(hcd_status_str, "perror "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, device_mode, yes)) { -+ strcat(hcd_status_str, "device_mode "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, host_mode, yes)) { -+ strcat(hcd_status_str, "host_mode "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, started, yes)) { -+ strcat(hcd_status_str, "started "); -+ } -+ if(bUsbStatus & IO_STATE(R_USB_STATUS, running, yes)) { -+ strcat(hcd_status_str, "running "); -+ } -+ return hcd_status_str; -+} -+ -+ -+char* sblist_to_str(struct USB_SB_Desc* sb_desc) { -+ static char sblist_to_str_buff[128]; -+ char tmp[32], tmp2[32]; -+ sblist_to_str_buff[0] = '\0'; -+ while(sb_desc != NULL) { -+ switch(IO_EXTRACT(USB_SB_command, tt, sb_desc->command)) { -+ case 0: sprintf(tmp, "zout"); break; -+ case 1: sprintf(tmp, "in"); break; -+ case 2: sprintf(tmp, "out"); break; -+ case 3: sprintf(tmp, "setup"); break; -+ } -+ sprintf(tmp2, "(%s %d)", tmp, sb_desc->sw_len); -+ strcat(sblist_to_str_buff, tmp2); -+ if(sb_desc->next != 0) { -+ sb_desc = phys_to_virt(sb_desc->next); -+ } else { -+ sb_desc = NULL; -+ } -+ } -+ return sblist_to_str_buff; -+} -+ -+char* port_status_to_str(__u16 wPortStatus) { -+ static char port_status_str[128]; -+ port_status_str[0] = '\0'; -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) { -+ strcat(port_status_str, "connected "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) { -+ strcat(port_status_str, "enabled "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, suspended, yes)) { -+ strcat(port_status_str, "suspended "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, reset, yes)) { -+ strcat(port_status_str, "reset "); -+ } -+ if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, speed, full)) { -+ strcat(port_status_str, "full-speed "); -+ } else { -+ strcat(port_status_str, "low-speed "); -+ } -+ return port_status_str; -+} -+ -+ -+char* endpoint_to_str(struct usb_endpoint_descriptor *ed) { -+ static char endpoint_to_str_buff[128]; -+ char tmp[32]; -+ int epnum = ed->bEndpointAddress & 0x0F; -+ int dir = ed->bEndpointAddress & 0x80; -+ int type = ed->bmAttributes & 0x03; -+ endpoint_to_str_buff[0] = '\0'; -+ sprintf(endpoint_to_str_buff, "ep:%d ", epnum); -+ switch(type) { -+ case 0: -+ sprintf(tmp, " ctrl"); -+ break; -+ case 1: -+ sprintf(tmp, " isoc"); -+ break; -+ case 2: -+ sprintf(tmp, " bulk"); -+ break; -+ case 3: -+ sprintf(tmp, " intr"); -+ break; -+ } -+ strcat(endpoint_to_str_buff, tmp); -+ if(dir) { -+ sprintf(tmp, " in"); -+ } else { -+ sprintf(tmp, " out"); -+ } -+ strcat(endpoint_to_str_buff, tmp); -+ -+ return endpoint_to_str_buff; -+} -+ -+/* Debug helper functions for Transfer Controller */ -+char* pipe_to_str(unsigned int pipe) { -+ static char pipe_to_str_buff[128]; -+ char tmp[64]; -+ sprintf(pipe_to_str_buff, "dir:%s", str_dir(pipe)); -+ sprintf(tmp, " type:%s", str_type(pipe)); -+ strcat(pipe_to_str_buff, tmp); -+ -+ sprintf(tmp, " dev:%d", usb_pipedevice(pipe)); -+ strcat(pipe_to_str_buff, tmp); -+ sprintf(tmp, " ep:%d", usb_pipeendpoint(pipe)); -+ strcat(pipe_to_str_buff, tmp); -+ return pipe_to_str_buff; -+} -+ -+ -+#define USB_DEBUG_DESC 1 -+ -+#ifdef USB_DEBUG_DESC -+#define dump_in_desc(x) __dump_in_desc(x) -+#define dump_sb_desc(...) __dump_sb_desc(...) -+#define dump_ep_desc(x) __dump_ep_desc(x) -+#define dump_ept_data(x) __dump_ept_data(x) -+#else -+#define dump_in_desc(...) do {} while (0) -+#define dump_sb_desc(...) do {} while (0) -+#define dump_ep_desc(...) do {} while (0) -+#endif -+ -+ -+/* Uncomment this to enable massive function call trace -+ #define USB_DEBUG_TRACE */ -+ -+#ifdef USB_DEBUG_TRACE -+#define DBFENTER (printk(": Entering: %s\n", __FUNCTION__)) -+#define DBFEXIT (printk(": Exiting: %s\n", __FUNCTION__)) -+#else -+#define DBFENTER do {} while (0) -+#define DBFEXIT do {} while (0) -+#endif -+ -+#define CHECK_ALIGN(x) if (((__u32)(x)) & 0x00000003) \ -+{panic("Alignment check (DWORD) failed at %s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__);} -+ -+/* Most helpful debugging aid */ -+#define ASSERT(expr) ((void) ((expr) ? 0 : (err("assert failed at: %s %d",__FUNCTION__, __LINE__)))) -+ -+ -+/***************************************************************************/ -+/***************************************************************************/ -+/* Forward declarations */ -+/***************************************************************************/ -+/***************************************************************************/ -+void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg); -+void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg); -+void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg); -+void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg); -+ -+void rh_port_status_change(__u16[]); -+int rh_clear_port_feature(__u8, __u16); -+int rh_set_port_feature(__u8, __u16); -+static void rh_disable_port(unsigned int port); -+ -+static void check_finished_bulk_tx_epids(struct usb_hcd *hcd, -+ int timer); -+ -+static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb, -+ int mem_flags); -+static void tc_free_epid(struct usb_host_endpoint *ep); -+static int tc_allocate_epid(void); -+static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status); -+static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb, -+ int status); -+ -+static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid, -+ int mem_flags); -+static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb); -+ -+static inline struct urb *urb_list_first(int epid); -+static inline void urb_list_add(struct urb *urb, int epid, -+ int mem_flags); -+static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid); -+static inline void urb_list_del(struct urb *urb, int epid); -+static inline void urb_list_move_last(struct urb *urb, int epid); -+static inline struct urb *urb_list_next(struct urb *urb, int epid); -+ -+int create_sb_for_urb(struct urb *urb, int mem_flags); -+int init_intr_urb(struct urb *urb, int mem_flags); -+ -+static inline void etrax_epid_set(__u8 index, __u32 data); -+static inline void etrax_epid_clear_error(__u8 index); -+static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout, -+ __u8 toggle); -+static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout); -+static inline __u32 etrax_epid_get(__u8 index); -+ -+/* We're accessing the same register position in Etrax so -+ when we do full access the internal difference doesn't matter */ -+#define etrax_epid_iso_set(index, data) etrax_epid_set(index, data) -+#define etrax_epid_iso_get(index) etrax_epid_get(index) -+ -+ -+static void tc_dma_process_isoc_urb(struct urb *urb); -+static void tc_dma_process_queue(int epid); -+static void tc_dma_unlink_intr_urb(struct urb *urb); -+static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc); -+static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc); -+ -+static void tc_bulk_start_timer_func(unsigned long dummy); -+static void tc_bulk_eot_timer_func(unsigned long dummy); -+ -+ -+/*************************************************************/ -+/*************************************************************/ -+/* Host Controler Driver block */ -+/*************************************************************/ -+/*************************************************************/ -+ -+/* HCD operations */ -+static irqreturn_t crisv10_hcd_top_irq(int irq, void*); -+static int crisv10_hcd_reset(struct usb_hcd *); -+static int crisv10_hcd_start(struct usb_hcd *); -+static void crisv10_hcd_stop(struct usb_hcd *); -+#ifdef CONFIG_PM -+static int crisv10_hcd_suspend(struct device *, u32, u32); -+static int crisv10_hcd_resume(struct device *, u32); -+#endif /* CONFIG_PM */ -+static int crisv10_hcd_get_frame(struct usb_hcd *); -+ -+static int tc_urb_enqueue(struct usb_hcd *, struct usb_host_endpoint *ep, struct urb *, gfp_t mem_flags); -+static int tc_urb_dequeue(struct usb_hcd *, struct urb *); -+static void tc_endpoint_disable(struct usb_hcd *, struct usb_host_endpoint *ep); -+ -+static int rh_status_data_request(struct usb_hcd *, char *); -+static int rh_control_request(struct usb_hcd *, u16, u16, u16, char*, u16); -+ -+#ifdef CONFIG_PM -+static int crisv10_hcd_hub_suspend(struct usb_hcd *); -+static int crisv10_hcd_hub_resume(struct usb_hcd *); -+#endif /* CONFIG_PM */ -+#ifdef CONFIG_USB_OTG -+static int crisv10_hcd_start_port_reset(struct usb_hcd *, unsigned); -+#endif /* CONFIG_USB_OTG */ -+ -+/* host controller driver interface */ -+static const struct hc_driver crisv10_hc_driver = -+ { -+ .description = hc_name, -+ .product_desc = product_desc, -+ .hcd_priv_size = sizeof(struct crisv10_hcd), -+ -+ /* Attaching IRQ handler manualy in probe() */ -+ /* .irq = crisv10_hcd_irq, */ -+ -+ .flags = HCD_USB11, -+ -+ /* called to init HCD and root hub */ -+ .reset = crisv10_hcd_reset, -+ .start = crisv10_hcd_start, -+ -+ /* cleanly make HCD stop writing memory and doing I/O */ -+ .stop = crisv10_hcd_stop, -+ -+ /* return current frame number */ -+ .get_frame_number = crisv10_hcd_get_frame, -+ -+ -+ /* Manage i/o requests via the Transfer Controller */ -+ .urb_enqueue = tc_urb_enqueue, -+ .urb_dequeue = tc_urb_dequeue, -+ -+ /* hw synch, freeing endpoint resources that urb_dequeue can't */ -+ .endpoint_disable = tc_endpoint_disable, -+ -+ -+ /* Root Hub support */ -+ .hub_status_data = rh_status_data_request, -+ .hub_control = rh_control_request, -+#ifdef CONFIG_PM -+ .hub_suspend = rh_suspend_request, -+ .hub_resume = rh_resume_request, -+#endif /* CONFIG_PM */ -+#ifdef CONFIG_USB_OTG -+ .start_port_reset = crisv10_hcd_start_port_reset, -+#endif /* CONFIG_USB_OTG */ -+ }; -+ -+ -+/* -+ * conversion between pointers to a hcd and the corresponding -+ * crisv10_hcd -+ */ -+ -+static inline struct crisv10_hcd *hcd_to_crisv10_hcd(struct usb_hcd *hcd) -+{ -+ return (struct crisv10_hcd *) hcd->hcd_priv; -+} -+ -+static inline struct usb_hcd *crisv10_hcd_to_hcd(struct crisv10_hcd *hcd) -+{ -+ return container_of((void *) hcd, struct usb_hcd, hcd_priv); -+} -+ -+/* check if specified port is in use */ -+static inline int port_in_use(unsigned int port) -+{ -+ return ports & (1 << port); -+} -+ -+/* number of ports in use */ -+static inline unsigned int num_ports(void) -+{ -+ unsigned int i, num = 0; -+ for (i = 0; i < USB_ROOT_HUB_PORTS; i++) -+ if (port_in_use(i)) -+ num++; -+ return num; -+} -+ -+/* map hub port number to the port number used internally by the HC */ -+static inline unsigned int map_port(unsigned int port) -+{ -+ unsigned int i, num = 0; -+ for (i = 0; i < USB_ROOT_HUB_PORTS; i++) -+ if (port_in_use(i)) -+ if (++num == port) -+ return i; -+ return -1; -+} -+ -+/* size of descriptors in slab cache */ -+#ifndef MAX -+#define MAX(x, y) ((x) > (y) ? (x) : (y)) -+#endif -+ -+ -+/******************************************************************/ -+/* Hardware Interrupt functions */ -+/******************************************************************/ -+ -+/* Fast interrupt handler for HC */ -+static irqreturn_t crisv10_hcd_top_irq(int irq, void *vcd) -+{ -+ struct usb_hcd *hcd = vcd; -+ struct crisv10_irq_reg reg; -+ __u32 irq_mask; -+ unsigned long flags; -+ -+ DBFENTER; -+ -+ ASSERT(hcd != NULL); -+ reg.hcd = hcd; -+ -+ /* Turn of other interrupts while handling these sensitive cases */ -+ local_irq_save(flags); -+ -+ /* Read out which interrupts that are flaged */ -+ irq_mask = *R_USB_IRQ_MASK_READ; -+ reg.r_usb_irq_mask_read = irq_mask; -+ -+ /* Reading R_USB_STATUS clears the ctl_status interrupt. Note that -+ R_USB_STATUS must be read before R_USB_EPID_ATTN since reading the latter -+ clears the ourun and perror fields of R_USB_STATUS. */ -+ reg.r_usb_status = *R_USB_STATUS; -+ -+ /* Reading R_USB_EPID_ATTN clears the iso_eof, bulk_eot and epid_attn -+ interrupts. */ -+ reg.r_usb_epid_attn = *R_USB_EPID_ATTN; -+ -+ /* Reading R_USB_RH_PORT_STATUS_1 and R_USB_RH_PORT_STATUS_2 clears the -+ port_status interrupt. */ -+ reg.r_usb_rh_port_status_1 = *R_USB_RH_PORT_STATUS_1; -+ reg.r_usb_rh_port_status_2 = *R_USB_RH_PORT_STATUS_2; -+ -+ /* Reading R_USB_FM_NUMBER clears the sof interrupt. */ -+ /* Note: the lower 11 bits contain the actual frame number, sent with each -+ sof. */ -+ reg.r_usb_fm_number = *R_USB_FM_NUMBER; -+ -+ /* Interrupts are handled in order of priority. */ -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, port_status)) { -+ crisv10_hcd_port_status_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, epid_attn)) { -+ crisv10_hcd_epid_attn_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, ctl_status)) { -+ crisv10_hcd_ctl_status_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, iso_eof)) { -+ crisv10_hcd_isoc_eof_irq(®); -+ } -+ if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, bulk_eot)) { -+ /* Update/restart the bulk start timer since obviously the channel is -+ running. */ -+ mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); -+ /* Update/restart the bulk eot timer since we just received an bulk eot -+ interrupt. */ -+ mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -+ -+ /* Check for finished bulk transfers on epids */ -+ check_finished_bulk_tx_epids(hcd, 0); -+ } -+ local_irq_restore(flags); -+ -+ DBFEXIT; -+ return IRQ_HANDLED; -+} -+ -+ -+void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg) { -+ struct usb_hcd *hcd = reg->hcd; -+ struct crisv10_urb_priv *urb_priv; -+ int epid; -+ DBFENTER; -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if (test_bit(epid, (void *)®->r_usb_epid_attn)) { -+ struct urb *urb; -+ __u32 ept_data; -+ int error_code; -+ -+ if (epid == DUMMY_EPID || epid == INVALID_EPID) { -+ /* We definitely don't care about these ones. Besides, they are -+ always disabled, so any possible disabling caused by the -+ epid attention interrupt is irrelevant. */ -+ warn("Got epid_attn for INVALID_EPID or DUMMY_EPID (%d).", epid); -+ continue; -+ } -+ -+ if(!epid_inuse(epid)) { -+ irq_err("Epid attention on epid:%d that isn't in use\n", epid); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ debug_epid(epid); -+ continue; -+ } -+ -+ /* Note that although there are separate R_USB_EPT_DATA and -+ R_USB_EPT_DATA_ISO registers, they are located at the same address and -+ are of the same size. In other words, this read should be ok for isoc -+ also. */ -+ ept_data = etrax_epid_get(epid); -+ error_code = IO_EXTRACT(R_USB_EPT_DATA, error_code, ept_data); -+ -+ /* Get the active URB for this epid. We blatantly assume -+ that only this URB could have caused the epid attention. */ -+ urb = activeUrbList[epid]; -+ if (urb == NULL) { -+ irq_err("Attention on epid:%d error:%d with no active URB.\n", -+ epid, error_code); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ debug_epid(epid); -+ continue; -+ } -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ /* Using IO_STATE_VALUE on R_USB_EPT_DATA should be ok for isoc also. */ -+ if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ -+ /* Isoc traffic doesn't have error_count_in/error_count_out. */ -+ if ((usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) && -+ (IO_EXTRACT(R_USB_EPT_DATA, error_count_in, ept_data) == 3 || -+ IO_EXTRACT(R_USB_EPT_DATA, error_count_out, ept_data) == 3)) { -+ /* Check if URB allready is marked for late-finish, we can get -+ several 3rd error for Intr traffic when a device is unplugged */ -+ if(urb_priv->later_data == NULL) { -+ /* 3rd error. */ -+ irq_warn("3rd error for epid:%d (%s %s) URB:0x%x[%d]\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe), -+ (unsigned int)urb, urb_priv->urb_num); -+ -+ tc_finish_urb_later(hcd, urb, -EPROTO); -+ } -+ -+ } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { -+ irq_warn("Perror for epid:%d\n", epid); -+ printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ __dump_urb(urb); -+ debug_epid(epid); -+ -+ if (!(ept_data & IO_MASK(R_USB_EPT_DATA, valid))) { -+ /* invalid ep_id */ -+ panic("Perror because of invalid epid." -+ " Deconfigured too early?"); -+ } else { -+ /* past eof1, near eof, zout transfer, setup transfer */ -+ /* Dump the urb and the relevant EP descriptor. */ -+ panic("Something wrong with DMA descriptor contents." -+ " Too much traffic inserted?"); -+ } -+ } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { -+ /* buffer ourun */ -+ printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ __dump_urb(urb); -+ debug_epid(epid); -+ -+ panic("Buffer overrun/underrun for epid:%d. DMA too busy?", epid); -+ } else { -+ irq_warn("Attention on epid:%d (%s %s) with no error code\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe)); -+ printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); -+ __dump_urb(urb); -+ debug_epid(epid); -+ } -+ -+ } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, -+ stall)) { -+ /* Not really a protocol error, just says that the endpoint gave -+ a stall response. Note that error_code cannot be stall for isoc. */ -+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -+ panic("Isoc traffic cannot stall"); -+ } -+ -+ tc_dbg("Stall for epid:%d (%s %s) URB:0x%x\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe), (unsigned int)urb); -+ tc_finish_urb(hcd, urb, -EPIPE); -+ -+ } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, -+ bus_error)) { -+ /* Two devices responded to a transaction request. Must be resolved -+ by software. FIXME: Reset ports? */ -+ panic("Bus error for epid %d." -+ " Two devices responded to transaction request\n", -+ epid); -+ -+ } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, -+ buffer_error)) { -+ /* DMA overrun or underrun. */ -+ irq_warn("Buffer overrun/underrun for epid:%d (%s %s)\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe)); -+ -+ /* It seems that error_code = buffer_error in -+ R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS -+ are the same error. */ -+ tc_finish_urb(hcd, urb, -EPROTO); -+ } else { -+ irq_warn("Unknown attention on epid:%d (%s %s)\n", epid, -+ str_dir(urb->pipe), str_type(urb->pipe)); -+ dump_ept_data(epid); -+ } -+ } -+ } -+ DBFEXIT; -+} -+ -+void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg) -+{ -+ __u16 port_reg[USB_ROOT_HUB_PORTS]; -+ DBFENTER; -+ port_reg[0] = reg->r_usb_rh_port_status_1; -+ port_reg[1] = reg->r_usb_rh_port_status_2; -+ rh_port_status_change(port_reg); -+ DBFEXIT; -+} -+ -+void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg) -+{ -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv *urb_priv; -+ -+ DBFENTER; -+ -+ for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -+ -+ /* Only check epids that are in use, is valid and has SB list */ -+ if (!epid_inuse(epid) || epid == INVALID_EPID || -+ TxIsocEPList[epid].sub == 0 || epid == DUMMY_EPID) { -+ /* Nothing here to see. */ -+ continue; -+ } -+ ASSERT(epid_isoc(epid)); -+ -+ /* Get the active URB for this epid (if any). */ -+ urb = activeUrbList[epid]; -+ if (urb == 0) { -+ isoc_warn("Ignoring NULL urb for epid:%d\n", epid); -+ continue; -+ } -+ if(!epid_out_traffic(epid)) { -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ if (urb_priv->urb_state == NOT_STARTED) { -+ /* If ASAP is not set and urb->start_frame is the current frame, -+ start the transfer. */ -+ if (!(urb->transfer_flags & URB_ISO_ASAP) && -+ (urb->start_frame == (*R_USB_FM_NUMBER & 0x7ff))) { -+ /* EP should not be enabled if we're waiting for start_frame */ -+ ASSERT((TxIsocEPList[epid].command & -+ IO_STATE(USB_EP_command, enable, yes)) == 0); -+ -+ isoc_warn("Enabling isoc IN EP descr for epid %d\n", epid); -+ TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ -+ /* This urb is now active. */ -+ urb_priv->urb_state = STARTED; -+ continue; -+ } -+ } -+ } -+ } -+ -+ DBFEXIT; -+} -+ -+void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg) -+{ -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(reg->hcd); -+ -+ DBFENTER; -+ ASSERT(crisv10_hcd); -+ -+ irq_dbg("ctr_status_irq, controller status: %s\n", -+ hcd_status_to_str(reg->r_usb_status)); -+ -+ /* FIXME: What should we do if we get ourun or perror? Dump the EP and SB -+ list for the corresponding epid? */ -+ if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { -+ panic("USB controller got ourun."); -+ } -+ if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { -+ -+ /* Before, etrax_usb_do_intr_recover was called on this epid if it was -+ an interrupt pipe. I don't see how re-enabling all EP descriptors -+ will help if there was a programming error. */ -+ panic("USB controller got perror."); -+ } -+ -+ /* Keep track of USB Controller, if it's running or not */ -+ if(reg->r_usb_status & IO_STATE(R_USB_STATUS, running, yes)) { -+ crisv10_hcd->running = 1; -+ } else { -+ crisv10_hcd->running = 0; -+ } -+ -+ if (reg->r_usb_status & IO_MASK(R_USB_STATUS, device_mode)) { -+ /* We should never operate in device mode. */ -+ panic("USB controller in device mode."); -+ } -+ -+ /* Set the flag to avoid getting "Unlink after no-IRQ? Controller is probably -+ using the wrong IRQ" from hcd_unlink_urb() in drivers/usb/core/hcd.c */ -+ set_bit(HCD_FLAG_SAW_IRQ, ®->hcd->flags); -+ -+ DBFEXIT; -+} -+ -+ -+/******************************************************************/ -+/* Host Controller interface functions */ -+/******************************************************************/ -+ -+static inline void crisv10_ready_wait(void) { -+ volatile int timeout = 10000; -+ /* Check the busy bit of USB controller in Etrax */ -+ while((*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for USB controller to be idle\n"); -+ } -+} -+ -+/* reset host controller */ -+static int crisv10_hcd_reset(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ hcd_dbg(hcd, "reset\n"); -+ -+ -+ /* Reset the USB interface. */ -+ /* -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); -+ nop(); -+ */ -+ DBFEXIT; -+ return 0; -+} -+ -+/* start host controller */ -+static int crisv10_hcd_start(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ hcd_dbg(hcd, "start\n"); -+ -+ crisv10_ready_wait(); -+ -+ /* Start processing of USB traffic. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -+ -+ nop(); -+ -+ hcd->state = HC_STATE_RUNNING; -+ -+ DBFEXIT; -+ return 0; -+} -+ -+/* stop host controller */ -+static void crisv10_hcd_stop(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ hcd_dbg(hcd, "stop\n"); -+ crisv10_hcd_reset(hcd); -+ DBFEXIT; -+} -+ -+/* return the current frame number */ -+static int crisv10_hcd_get_frame(struct usb_hcd *hcd) -+{ -+ DBFENTER; -+ DBFEXIT; -+ return (*R_USB_FM_NUMBER & 0x7ff); -+} -+ -+#ifdef CONFIG_USB_OTG -+ -+static int crisv10_hcd_start_port_reset(struct usb_hcd *hcd, unsigned port) -+{ -+ return 0; /* no-op for now */ -+} -+ -+#endif /* CONFIG_USB_OTG */ -+ -+ -+/******************************************************************/ -+/* Root Hub functions */ -+/******************************************************************/ -+ -+/* root hub status */ -+static const struct usb_hub_status rh_hub_status = -+ { -+ .wHubStatus = 0, -+ .wHubChange = 0, -+ }; -+ -+/* root hub descriptor */ -+static const u8 rh_hub_descr[] = -+ { -+ 0x09, /* bDescLength */ -+ 0x29, /* bDescriptorType */ -+ USB_ROOT_HUB_PORTS, /* bNbrPorts */ -+ 0x00, /* wHubCharacteristics */ -+ 0x00, -+ 0x01, /* bPwrOn2pwrGood */ -+ 0x00, /* bHubContrCurrent */ -+ 0x00, /* DeviceRemovable */ -+ 0xff /* PortPwrCtrlMask */ -+ }; -+ -+/* Actual holder of root hub status*/ -+struct crisv10_rh rh; -+ -+/* Initialize root hub data structures (called from dvdrv_hcd_probe()) */ -+int rh_init(void) { -+ int i; -+ /* Reset port status flags */ -+ for (i = 0; i < USB_ROOT_HUB_PORTS; i++) { -+ rh.wPortChange[i] = 0; -+ rh.wPortStatusPrev[i] = 0; -+ } -+ return 0; -+} -+ -+#define RH_FEAT_MASK ((1<<USB_PORT_FEAT_CONNECTION)|\ -+ (1<<USB_PORT_FEAT_ENABLE)|\ -+ (1<<USB_PORT_FEAT_SUSPEND)|\ -+ (1<<USB_PORT_FEAT_RESET)) -+ -+/* Handle port status change interrupt (called from bottom part interrupt) */ -+void rh_port_status_change(__u16 port_reg[]) { -+ int i; -+ __u16 wChange; -+ -+ for(i = 0; i < USB_ROOT_HUB_PORTS; i++) { -+ /* Xor out changes since last read, masked for important flags */ -+ wChange = (port_reg[i] & RH_FEAT_MASK) ^ rh.wPortStatusPrev[i]; -+ /* Or changes together with (if any) saved changes */ -+ rh.wPortChange[i] |= wChange; -+ /* Save new status */ -+ rh.wPortStatusPrev[i] = port_reg[i]; -+ -+ if(wChange) { -+ rh_dbg("Interrupt port_status change port%d: %s Current-status:%s\n", i+1, -+ port_status_to_str(wChange), -+ port_status_to_str(port_reg[i])); -+ } -+ } -+} -+ -+/* Construct port status change bitmap for the root hub */ -+static int rh_status_data_request(struct usb_hcd *hcd, char *buf) -+{ -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ unsigned int i; -+ -+ DBFENTER; -+ /* -+ * corresponds to hub status change EP (USB 2.0 spec section 11.13.4) -+ * return bitmap indicating ports with status change -+ */ -+ *buf = 0; -+ spin_lock(&crisv10_hcd->lock); -+ for (i = 1; i <= crisv10_hcd->num_ports; i++) { -+ if (rh.wPortChange[map_port(i)]) { -+ *buf |= (1 << i); -+ rh_dbg("rh_status_data_request, change on port %d: %s Current Status: %s\n", i, -+ port_status_to_str(rh.wPortChange[map_port(i)]), -+ port_status_to_str(rh.wPortStatusPrev[map_port(i)])); -+ } -+ } -+ spin_unlock(&crisv10_hcd->lock); -+ DBFEXIT; -+ return *buf == 0 ? 0 : 1; -+} -+ -+/* Handle a control request for the root hub (called from hcd_driver) */ -+static int rh_control_request(struct usb_hcd *hcd, -+ u16 typeReq, -+ u16 wValue, -+ u16 wIndex, -+ char *buf, -+ u16 wLength) { -+ -+ struct crisv10_hcd *crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ int retval = 0; -+ int len; -+ DBFENTER; -+ -+ switch (typeReq) { -+ case GetHubDescriptor: -+ rh_dbg("GetHubDescriptor\n"); -+ len = min_t(unsigned int, sizeof rh_hub_descr, wLength); -+ memcpy(buf, rh_hub_descr, len); -+ buf[2] = crisv10_hcd->num_ports; -+ break; -+ case GetHubStatus: -+ rh_dbg("GetHubStatus\n"); -+ len = min_t(unsigned int, sizeof rh_hub_status, wLength); -+ memcpy(buf, &rh_hub_status, len); -+ break; -+ case GetPortStatus: -+ if (!wIndex || wIndex > crisv10_hcd->num_ports) -+ goto error; -+ rh_dbg("GetportStatus, port:%d change:%s status:%s\n", wIndex, -+ port_status_to_str(rh.wPortChange[map_port(wIndex)]), -+ port_status_to_str(rh.wPortStatusPrev[map_port(wIndex)])); -+ *(u16 *) buf = cpu_to_le16(rh.wPortStatusPrev[map_port(wIndex)]); -+ *(u16 *) (buf + 2) = cpu_to_le16(rh.wPortChange[map_port(wIndex)]); -+ break; -+ case SetHubFeature: -+ rh_dbg("SetHubFeature\n"); -+ case ClearHubFeature: -+ rh_dbg("ClearHubFeature\n"); -+ switch (wValue) { -+ case C_HUB_OVER_CURRENT: -+ case C_HUB_LOCAL_POWER: -+ rh_warn("Not implemented hub request:%d \n", typeReq); -+ /* not implemented */ -+ break; -+ default: -+ goto error; -+ } -+ break; -+ case SetPortFeature: -+ if (!wIndex || wIndex > crisv10_hcd->num_ports) -+ goto error; -+ if(rh_set_port_feature(map_port(wIndex), wValue)) -+ goto error; -+ break; -+ case ClearPortFeature: -+ if (!wIndex || wIndex > crisv10_hcd->num_ports) -+ goto error; -+ if(rh_clear_port_feature(map_port(wIndex), wValue)) -+ goto error; -+ break; -+ default: -+ rh_warn("Unknown hub request: %d\n", typeReq); -+ error: -+ retval = -EPIPE; -+ } -+ DBFEXIT; -+ return retval; -+} -+ -+int rh_set_port_feature(__u8 bPort, __u16 wFeature) { -+ __u8 bUsbCommand = 0; -+ switch(wFeature) { -+ case USB_PORT_FEAT_RESET: -+ rh_dbg("SetPortFeature: reset\n"); -+ bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, reset); -+ goto set; -+ break; -+ case USB_PORT_FEAT_SUSPEND: -+ rh_dbg("SetPortFeature: suspend\n"); -+ bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, suspend); -+ goto set; -+ break; -+ case USB_PORT_FEAT_POWER: -+ rh_dbg("SetPortFeature: power\n"); -+ break; -+ case USB_PORT_FEAT_C_CONNECTION: -+ rh_dbg("SetPortFeature: c_connection\n"); -+ break; -+ case USB_PORT_FEAT_C_RESET: -+ rh_dbg("SetPortFeature: c_reset\n"); -+ break; -+ case USB_PORT_FEAT_C_OVER_CURRENT: -+ rh_dbg("SetPortFeature: c_over_current\n"); -+ break; -+ -+ set: -+ /* Select which port via the port_sel field */ -+ bUsbCommand |= IO_FIELD(R_USB_COMMAND, port_sel, bPort+1); -+ -+ /* Make sure the controller isn't busy. */ -+ crisv10_ready_wait(); -+ /* Send out the actual command to the USB controller */ -+ *R_USB_COMMAND = bUsbCommand; -+ -+ /* If port reset then also bring USB controller into running state */ -+ if(wFeature == USB_PORT_FEAT_RESET) { -+ /* Wait a while for controller to first become started after port reset */ -+ udelay(12000); /* 12ms blocking wait */ -+ -+ /* Make sure the controller isn't busy. */ -+ crisv10_ready_wait(); -+ -+ /* If all enabled ports were disabled the host controller goes down into -+ started mode, so we need to bring it back into the running state. -+ (This is safe even if it's already in the running state.) */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -+ } -+ -+ break; -+ default: -+ rh_dbg("SetPortFeature: unknown feature\n"); -+ return -1; -+ } -+ return 0; -+} -+ -+int rh_clear_port_feature(__u8 bPort, __u16 wFeature) { -+ switch(wFeature) { -+ case USB_PORT_FEAT_ENABLE: -+ rh_dbg("ClearPortFeature: enable\n"); -+ rh_disable_port(bPort); -+ break; -+ case USB_PORT_FEAT_SUSPEND: -+ rh_dbg("ClearPortFeature: suspend\n"); -+ break; -+ case USB_PORT_FEAT_POWER: -+ rh_dbg("ClearPortFeature: power\n"); -+ break; -+ -+ case USB_PORT_FEAT_C_ENABLE: -+ rh_dbg("ClearPortFeature: c_enable\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_SUSPEND: -+ rh_dbg("ClearPortFeature: c_suspend\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_CONNECTION: -+ rh_dbg("ClearPortFeature: c_connection\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_OVER_CURRENT: -+ rh_dbg("ClearPortFeature: c_over_current\n"); -+ goto clear; -+ case USB_PORT_FEAT_C_RESET: -+ rh_dbg("ClearPortFeature: c_reset\n"); -+ goto clear; -+ clear: -+ rh.wPortChange[bPort] &= ~(1 << (wFeature - 16)); -+ break; -+ default: -+ rh_dbg("ClearPortFeature: unknown feature\n"); -+ return -1; -+ } -+ return 0; -+} -+ -+ -+#ifdef CONFIG_PM -+/* Handle a suspend request for the root hub (called from hcd_driver) */ -+static int rh_suspend_request(struct usb_hcd *hcd) -+{ -+ return 0; /* no-op for now */ -+} -+ -+/* Handle a resume request for the root hub (called from hcd_driver) */ -+static int rh_resume_request(struct usb_hcd *hcd) -+{ -+ return 0; /* no-op for now */ -+} -+#endif /* CONFIG_PM */ -+ -+ -+ -+/* Wrapper function for workaround port disable registers in USB controller */ -+static void rh_disable_port(unsigned int port) { -+ volatile int timeout = 10000; -+ volatile char* usb_portx_disable; -+ switch(port) { -+ case 0: -+ usb_portx_disable = R_USB_PORT1_DISABLE; -+ break; -+ case 1: -+ usb_portx_disable = R_USB_PORT2_DISABLE; -+ break; -+ default: -+ /* Invalid port index */ -+ return; -+ } -+ /* Set disable flag in special register */ -+ *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); -+ /* Wait until not enabled anymore */ -+ while((rh.wPortStatusPrev[port] & -+ IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for port %d to become disabled\n", port); -+ } -+ /* clear disable flag in special register */ -+ *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, no); -+ rh_info("Physical port %d disabled\n", port+1); -+} -+ -+ -+/******************************************************************/ -+/* Transfer Controller (TC) functions */ -+/******************************************************************/ -+ -+/* FIXME: Should RX_BUF_SIZE be a config option, or maybe we should adjust it -+ dynamically? -+ To adjust it dynamically we would have to get an interrupt when we reach -+ the end of the rx descriptor list, or when we get close to the end, and -+ then allocate more descriptors. */ -+#define NBR_OF_RX_DESC 512 -+#define RX_DESC_BUF_SIZE 1024 -+#define RX_BUF_SIZE (NBR_OF_RX_DESC * RX_DESC_BUF_SIZE) -+ -+ -+/* Local variables for Transfer Controller */ -+/* --------------------------------------- */ -+ -+/* This is a circular (double-linked) list of the active urbs for each epid. -+ The head is never removed, and new urbs are linked onto the list as -+ urb_entry_t elements. Don't reference urb_list directly; use the wrapper -+ functions instead (which includes spin_locks) */ -+static struct list_head urb_list[NBR_OF_EPIDS]; -+ -+/* Read about the need and usage of this lock in submit_ctrl_urb. */ -+/* Lock for URB lists for each EPID */ -+static spinlock_t urb_list_lock; -+ -+/* Lock for EPID array register (R_USB_EPT_x) in Etrax */ -+static spinlock_t etrax_epid_lock; -+ -+/* Lock for dma8 sub0 handling */ -+static spinlock_t etrax_dma8_sub0_lock; -+ -+/* DMA IN cache bug. Align the DMA IN buffers to 32 bytes, i.e. a cache line. -+ Since RX_DESC_BUF_SIZE is 1024 is a multiple of 32, all rx buffers will be -+ cache aligned. */ -+static volatile unsigned char RxBuf[RX_BUF_SIZE] __attribute__ ((aligned (32))); -+static volatile struct USB_IN_Desc RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned (4))); -+ -+/* Pointers into RxDescList. */ -+static volatile struct USB_IN_Desc *myNextRxDesc; -+static volatile struct USB_IN_Desc *myLastRxDesc; -+ -+/* A zout transfer makes a memory access at the address of its buf pointer, -+ which means that setting this buf pointer to 0 will cause an access to the -+ flash. In addition to this, setting sw_len to 0 results in a 16/32 bytes -+ (depending on DMA burst size) transfer. -+ Instead, we set it to 1, and point it to this buffer. */ -+static int zout_buffer[4] __attribute__ ((aligned (4))); -+ -+/* Cache for allocating new EP and SB descriptors. */ -+static kmem_cache_t *usb_desc_cache; -+ -+/* Cache for the data allocated in the isoc descr top half. */ -+static kmem_cache_t *isoc_compl_cache; -+ -+/* Cache for the data allocated when delayed finishing of URBs */ -+static kmem_cache_t *later_data_cache; -+ -+ -+/* Counter to keep track of how many Isoc EP we have sat up. Used to enable -+ and disable iso_eof interrupt. We only need these interrupts when we have -+ Isoc data endpoints (consumes CPU cycles). -+ FIXME: This could be more fine granular, so this interrupt is only enabled -+ when we have a In Isoc URB not URB_ISO_ASAP flaged queued. */ -+static int isoc_epid_counter; -+ -+/* Protecting wrapper functions for R_USB_EPT_x */ -+/* -------------------------------------------- */ -+static inline void etrax_epid_set(__u8 index, __u32 data) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ *R_USB_EPT_DATA = data; -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+} -+ -+static inline void etrax_epid_clear_error(__u8 index) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ *R_USB_EPT_DATA &= -+ ~(IO_MASK(R_USB_EPT_DATA, error_count_in) | -+ IO_MASK(R_USB_EPT_DATA, error_count_out) | -+ IO_MASK(R_USB_EPT_DATA, error_code)); -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+} -+ -+static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout, -+ __u8 toggle) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ if(dirout) { -+ *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_out); -+ *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_out, toggle); -+ } else { -+ *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_in); -+ *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_in, toggle); -+ } -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+} -+ -+static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout) { -+ unsigned long flags; -+ __u8 toggle; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ if (dirout) { -+ toggle = IO_EXTRACT(R_USB_EPT_DATA, t_out, *R_USB_EPT_DATA); -+ } else { -+ toggle = IO_EXTRACT(R_USB_EPT_DATA, t_in, *R_USB_EPT_DATA); -+ } -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+ return toggle; -+} -+ -+ -+static inline __u32 etrax_epid_get(__u8 index) { -+ unsigned long flags; -+ __u32 data; -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); -+ nop(); -+ data = *R_USB_EPT_DATA; -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+ return data; -+} -+ -+ -+ -+ -+/* Main functions for Transfer Controller */ -+/* -------------------------------------- */ -+ -+/* Init structs, memories and lists used by Transfer Controller */ -+int tc_init(struct usb_hcd *hcd) { -+ int i; -+ /* Clear software state info for all epids */ -+ memset(epid_state, 0, sizeof(struct etrax_epid) * NBR_OF_EPIDS); -+ -+ /* Set Invalid and Dummy as being in use and disabled */ -+ epid_state[INVALID_EPID].inuse = 1; -+ epid_state[DUMMY_EPID].inuse = 1; -+ epid_state[INVALID_EPID].disabled = 1; -+ epid_state[DUMMY_EPID].disabled = 1; -+ -+ /* Clear counter for how many Isoc epids we have sat up */ -+ isoc_epid_counter = 0; -+ -+ /* Initialize the urb list by initiating a head for each list. -+ Also reset list hodling active URB for each epid */ -+ for (i = 0; i < NBR_OF_EPIDS; i++) { -+ INIT_LIST_HEAD(&urb_list[i]); -+ activeUrbList[i] = NULL; -+ } -+ -+ /* Init lock for URB lists */ -+ spin_lock_init(&urb_list_lock); -+ /* Init lock for Etrax R_USB_EPT register */ -+ spin_lock_init(&etrax_epid_lock); -+ /* Init lock for Etrax dma8 sub0 handling */ -+ spin_lock_init(&etrax_dma8_sub0_lock); -+ -+ /* We use kmem_cache_* to make sure that all DMA desc. are dword aligned */ -+ -+ /* Note that we specify sizeof(struct USB_EP_Desc) as the size, but also -+ allocate SB descriptors from this cache. This is ok since -+ sizeof(struct USB_EP_Desc) == sizeof(struct USB_SB_Desc). */ -+ usb_desc_cache = kmem_cache_create("usb_desc_cache", -+ sizeof(struct USB_EP_Desc), 0, -+ SLAB_HWCACHE_ALIGN, 0, 0); -+ if(usb_desc_cache == NULL) { -+ return -ENOMEM; -+ } -+ -+ /* Create slab cache for speedy allocation of memory for isoc bottom-half -+ interrupt handling */ -+ isoc_compl_cache = -+ kmem_cache_create("isoc_compl_cache", -+ sizeof(struct crisv10_isoc_complete_data), -+ 0, SLAB_HWCACHE_ALIGN, 0, 0); -+ if(isoc_compl_cache == NULL) { -+ return -ENOMEM; -+ } -+ -+ /* Create slab cache for speedy allocation of memory for later URB finish -+ struct */ -+ later_data_cache = -+ kmem_cache_create("later_data_cache", -+ sizeof(struct urb_later_data), -+ 0, SLAB_HWCACHE_ALIGN, 0, 0); -+ if(later_data_cache == NULL) { -+ return -ENOMEM; -+ } -+ -+ -+ /* Initiate the bulk start timer. */ -+ init_timer(&bulk_start_timer); -+ bulk_start_timer.expires = jiffies + BULK_START_TIMER_INTERVAL; -+ bulk_start_timer.function = tc_bulk_start_timer_func; -+ add_timer(&bulk_start_timer); -+ -+ -+ /* Initiate the bulk eot timer. */ -+ init_timer(&bulk_eot_timer); -+ bulk_eot_timer.expires = jiffies + BULK_EOT_TIMER_INTERVAL; -+ bulk_eot_timer.function = tc_bulk_eot_timer_func; -+ bulk_eot_timer.data = (unsigned long)hcd; -+ add_timer(&bulk_eot_timer); -+ -+ return 0; -+} -+ -+/* Uninitialize all resources used by Transfer Controller */ -+void tc_destroy(void) { -+ -+ /* Destroy all slab cache */ -+ kmem_cache_destroy(usb_desc_cache); -+ kmem_cache_destroy(isoc_compl_cache); -+ kmem_cache_destroy(later_data_cache); -+ -+ /* Remove timers */ -+ del_timer(&bulk_start_timer); -+ del_timer(&bulk_eot_timer); -+} -+ -+static void restart_dma8_sub0(void) { -+ unsigned long flags; -+ spin_lock_irqsave(&etrax_dma8_sub0_lock, flags); -+ /* Verify that the dma is not running */ -+ if ((*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd)) == 0) { -+ struct USB_EP_Desc *ep = (struct USB_EP_Desc *)phys_to_virt(*R_DMA_CH8_SUB0_EP); -+ while (DUMMY_EPID == IO_EXTRACT(USB_EP_command, epid, ep->command)) { -+ ep = (struct USB_EP_Desc *)phys_to_virt(ep->next); -+ } -+ /* Advance the DMA to the next EP descriptor that is not a DUMMY_EPID. -+ * ep->next is already a physical address; no need for a virt_to_phys. */ -+ *R_DMA_CH8_SUB0_EP = ep->next; -+ /* Restart the DMA */ -+ *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); -+ } -+ spin_unlock_irqrestore(&etrax_dma8_sub0_lock, flags); -+} -+ -+/* queue an URB with the transfer controller (called from hcd_driver) */ -+static int tc_urb_enqueue(struct usb_hcd *hcd, -+ struct usb_host_endpoint *ep, -+ struct urb *urb, -+ gfp_t mem_flags) { -+ int epid; -+ int retval; -+ int bustime = 0; -+ int maxpacket; -+ unsigned long flags; -+ struct crisv10_urb_priv *urb_priv; -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ DBFENTER; -+ -+ if(!(crisv10_hcd->running)) { -+ /* The USB Controller is not running, probably because no device is -+ attached. No idea to enqueue URBs then */ -+ tc_warn("Rejected enqueueing of URB:0x%x because no dev attached\n", -+ (unsigned int)urb); -+ return -ENOENT; -+ } -+ -+ maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -+ /* Special case check for In Isoc transfers. Specification states that each -+ In Isoc transfer consists of one packet and therefore it should fit into -+ the transfer-buffer of an URB. -+ We do the check here to be sure (an invalid scenario can be produced with -+ parameters to the usbtest suite) */ -+ if(usb_pipeisoc(urb->pipe) && usb_pipein(urb->pipe) && -+ (urb->transfer_buffer_length < maxpacket)) { -+ tc_err("Submit In Isoc URB with buffer length:%d to pipe with maxpacketlen: %d\n", urb->transfer_buffer_length, maxpacket); -+ return -EMSGSIZE; -+ } -+ -+ /* Check if there is enough bandwidth for periodic transfer */ -+ if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) { -+ /* only check (and later claim) if not already claimed */ -+ if (urb->bandwidth == 0) { -+ bustime = usb_check_bandwidth(urb->dev, urb); -+ if (bustime < 0) { -+ tc_err("Not enough periodic bandwidth\n"); -+ return -ENOSPC; -+ } -+ } -+ } -+ -+ /* Check if there is a epid for URBs destination, if not this function -+ set up one. */ -+ epid = tc_setup_epid(ep, urb, mem_flags); -+ if (epid < 0) { -+ tc_err("Failed setup epid:%d for URB:0x%x\n", epid, (unsigned int)urb); -+ DBFEXIT; -+ return -ENOMEM; -+ } -+ -+ if(urb == activeUrbList[epid]) { -+ tc_err("Resubmition of allready active URB:0x%x\n", (unsigned int)urb); -+ return -ENXIO; -+ } -+ -+ if(urb_list_entry(urb, epid)) { -+ tc_err("Resubmition of allready queued URB:0x%x\n", (unsigned int)urb); -+ return -ENXIO; -+ } -+ -+ /* If we actively have flaged endpoint as disabled then refuse submition */ -+ if(epid_state[epid].disabled) { -+ return -ENOENT; -+ } -+ -+ /* Allocate and init HC-private data for URB */ -+ if(urb_priv_create(hcd, urb, epid, mem_flags) != 0) { -+ DBFEXIT; -+ return -ENOMEM; -+ } -+ urb_priv = urb->hcpriv; -+ -+ tc_dbg("Enqueue URB:0x%x[%d] epid:%d (%s) bufflen:%d\n", -+ (unsigned int)urb, urb_priv->urb_num, epid, -+ pipe_to_str(urb->pipe), urb->transfer_buffer_length); -+ -+ /* Create and link SBs required for this URB */ -+ retval = create_sb_for_urb(urb, mem_flags); -+ if(retval != 0) { -+ tc_err("Failed to create SBs for URB:0x%x[%d]\n", (unsigned int)urb, -+ urb_priv->urb_num); -+ urb_priv_free(hcd, urb); -+ DBFEXIT; -+ return retval; -+ } -+ -+ /* Init intr EP pool if this URB is a INTR transfer. This pool is later -+ used when inserting EPs in the TxIntrEPList. We do the alloc here -+ so we can't run out of memory later */ -+ if(usb_pipeint(urb->pipe)) { -+ retval = init_intr_urb(urb, mem_flags); -+ if(retval != 0) { -+ tc_warn("Failed to init Intr URB\n"); -+ urb_priv_free(hcd, urb); -+ DBFEXIT; -+ return retval; -+ } -+ } -+ -+ /* Disable other access when inserting USB */ -+ local_irq_save(flags); -+ -+ /* Claim bandwidth, if needed */ -+ if(bustime) { -+ usb_claim_bandwidth(urb->dev, urb, bustime, 0); -+ } -+ -+ /* Add URB to EP queue */ -+ urb_list_add(urb, epid, mem_flags); -+ -+ if(usb_pipeisoc(urb->pipe)) { -+ /* Special processing of Isoc URBs. */ -+ tc_dma_process_isoc_urb(urb); -+ } else { -+ /* Process EP queue for rest of the URB types (Bulk, Ctrl, Intr) */ -+ tc_dma_process_queue(epid); -+ } -+ -+ local_irq_restore(flags); -+ -+ DBFEXIT; -+ return 0; -+} -+ -+/* remove an URB from the transfer controller queues (called from hcd_driver)*/ -+static int tc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) { -+ struct crisv10_urb_priv *urb_priv; -+ unsigned long flags; -+ int epid; -+ -+ DBFENTER; -+ /* Disable interrupts here since a descriptor interrupt for the isoc epid -+ will modify the sb list. This could possibly be done more granular, but -+ urb_dequeue should not be used frequently anyway. -+ */ -+ local_irq_save(flags); -+ -+ urb_priv = urb->hcpriv; -+ -+ if (!urb_priv) { -+ /* This happens if a device driver calls unlink on an urb that -+ was never submitted (lazy driver) or if the urb was completed -+ while dequeue was being called. */ -+ tc_warn("Dequeing of not enqueued URB:0x%x\n", (unsigned int)urb); -+ local_irq_restore(flags); -+ return 0; -+ } -+ epid = urb_priv->epid; -+ -+ tc_warn("Dequeing %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", -+ (urb == activeUrbList[epid]) ? "active" : "queued", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), epid, urb->status, -+ (urb_priv->later_data) ? "later-sched" : ""); -+ -+ /* For Bulk, Ctrl and Intr are only one URB active at a time. So any URB -+ that isn't active can be dequeued by just removing it from the queue */ -+ if(usb_pipebulk(urb->pipe) || usb_pipecontrol(urb->pipe) || -+ usb_pipeint(urb->pipe)) { -+ -+ /* Check if URB haven't gone further than the queue */ -+ if(urb != activeUrbList[epid]) { -+ ASSERT(urb_priv->later_data == NULL); -+ tc_warn("Dequeing URB:0x%x[%d] (%s %s epid:%d) from queue" -+ " (not active)\n", (unsigned int)urb, urb_priv->urb_num, -+ str_dir(urb->pipe), str_type(urb->pipe), epid); -+ -+ /* Finish the URB with error status from USB core */ -+ tc_finish_urb(hcd, urb, urb->status); -+ local_irq_restore(flags); -+ return 0; -+ } -+ } -+ -+ /* Set URB status to Unlink for handling when interrupt comes. */ -+ urb_priv->urb_state = UNLINK; -+ -+ /* Differentiate dequeing of Bulk and Ctrl from Isoc and Intr */ -+ switch(usb_pipetype(urb->pipe)) { -+ case PIPE_BULK: -+ /* Check if EP still is enabled */ -+ if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ /* Kicking dummy list out of the party. */ -+ TxBulkEPList[epid].next = virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); -+ break; -+ case PIPE_CONTROL: -+ /* Check if EP still is enabled */ -+ if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ break; -+ case PIPE_ISOCHRONOUS: -+ /* Disabling, busy-wait and unlinking of Isoc SBs will be done in -+ finish_isoc_urb(). Because there might the case when URB is dequeued -+ but there are other valid URBs waiting */ -+ -+ /* Check if In Isoc EP still is enabled */ -+ if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ break; -+ case PIPE_INTERRUPT: -+ /* Special care is taken for interrupt URBs. EPs are unlinked in -+ tc_finish_urb */ -+ break; -+ default: -+ break; -+ } -+ -+ /* Asynchronous unlink, finish the URB later from scheduled or other -+ event (data finished, error) */ -+ tc_finish_urb_later(hcd, urb, urb->status); -+ -+ local_irq_restore(flags); -+ DBFEXIT; -+ return 0; -+} -+ -+ -+static void tc_sync_finish_epid(struct usb_hcd *hcd, int epid) { -+ volatile int timeout = 10000; -+ struct urb* urb; -+ struct crisv10_urb_priv* urb_priv; -+ unsigned long flags; -+ -+ volatile struct USB_EP_Desc *first_ep; /* First EP in the list. */ -+ volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ -+ volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ -+ -+ int type = epid_state[epid].type; -+ -+ /* Setting this flag will cause enqueue() to return -ENOENT for new -+ submitions on this endpoint and finish_urb() wont process queue further */ -+ epid_state[epid].disabled = 1; -+ -+ switch(type) { -+ case PIPE_BULK: -+ /* Check if EP still is enabled */ -+ if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ tc_warn("sync_finish: Disabling EP for epid:%d\n", epid); -+ -+ /* Do busy-wait until DMA not using this EP descriptor anymore */ -+ while((*R_DMA_CH8_SUB0_EP == -+ virt_to_phys(&TxBulkEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Bulk to leave EP for" -+ " epid:%d\n", epid); -+ } -+ } -+ break; -+ -+ case PIPE_CONTROL: -+ /* Check if EP still is enabled */ -+ if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ /* The EP was enabled, disable it. */ -+ TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ tc_warn("sync_finish: Disabling EP for epid:%d\n", epid); -+ -+ /* Do busy-wait until DMA not using this EP descriptor anymore */ -+ while((*R_DMA_CH8_SUB1_EP == -+ virt_to_phys(&TxCtrlEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Ctrl to leave EP for" -+ " epid:%d\n", epid); -+ } -+ } -+ break; -+ -+ case PIPE_INTERRUPT: -+ local_irq_save(flags); -+ /* Disable all Intr EPs belonging to epid */ -+ first_ep = &TxIntrEPList[0]; -+ curr_ep = first_ep; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -+ /* Disable EP */ -+ next_ep->command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != first_ep); -+ -+ local_irq_restore(flags); -+ break; -+ -+ case PIPE_ISOCHRONOUS: -+ /* Check if EP still is enabled */ -+ if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ tc_warn("sync_finish: Disabling Isoc EP for epid:%d\n", epid); -+ /* The EP was enabled, disable it. */ -+ TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ -+ while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Isoc to leave EP for" -+ " epid:%d\n", epid); -+ } -+ } -+ break; -+ } -+ -+ local_irq_save(flags); -+ -+ /* Finish if there is active URB for this endpoint */ -+ if(activeUrbList[epid] != NULL) { -+ urb = activeUrbList[epid]; -+ urb_priv = urb->hcpriv; -+ ASSERT(urb_priv); -+ tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", -+ (urb == activeUrbList[epid]) ? "active" : "queued", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), epid, urb->status, -+ (urb_priv->later_data) ? "later-sched" : ""); -+ -+ tc_finish_urb(hcd, activeUrbList[epid], -ENOENT); -+ ASSERT(activeUrbList[epid] == NULL); -+ } -+ -+ /* Finish any queued URBs for this endpoint. There won't be any resubmitions -+ because epid_disabled causes enqueue() to fail for this endpoint */ -+ while((urb = urb_list_first(epid)) != NULL) { -+ urb_priv = urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", -+ (urb == activeUrbList[epid]) ? "active" : "queued", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), epid, urb->status, -+ (urb_priv->later_data) ? "later-sched" : ""); -+ -+ tc_finish_urb(hcd, urb, -ENOENT); -+ } -+ epid_state[epid].disabled = 0; -+ local_irq_restore(flags); -+} -+ -+/* free resources associated with an endpoint (called from hcd_driver) */ -+static void tc_endpoint_disable(struct usb_hcd *hcd, -+ struct usb_host_endpoint *ep) { -+ DBFENTER; -+ /* Only free epid if it has been allocated. We get two endpoint_disable -+ requests for ctrl endpoints so ignore the second one */ -+ if(ep->hcpriv != NULL) { -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ int epid = ep_priv->epid; -+ tc_warn("endpoint_disable ep:0x%x ep-priv:0x%x (%s) (epid:%d freed)\n", -+ (unsigned int)ep, (unsigned int)ep->hcpriv, -+ endpoint_to_str(&(ep->desc)), epid); -+ -+ tc_sync_finish_epid(hcd, epid); -+ -+ ASSERT(activeUrbList[epid] == NULL); -+ ASSERT(list_empty(&urb_list[epid])); -+ -+ tc_free_epid(ep); -+ } else { -+ tc_dbg("endpoint_disable ep:0x%x ep-priv:0x%x (%s)\n", (unsigned int)ep, -+ (unsigned int)ep->hcpriv, endpoint_to_str(&(ep->desc))); -+ } -+ DBFEXIT; -+} -+ -+static void tc_finish_urb_later_proc(void *data) { -+ unsigned long flags; -+ struct urb_later_data* uld = (struct urb_later_data*)data; -+ local_irq_save(flags); -+ if(uld->urb == NULL) { -+ late_dbg("Later finish of URB = NULL (allready finished)\n"); -+ } else { -+ struct crisv10_urb_priv* urb_priv = uld->urb->hcpriv; -+ ASSERT(urb_priv); -+ if(urb_priv->urb_num == uld->urb_num) { -+ late_dbg("Later finish of URB:0x%x[%d]\n", (unsigned int)(uld->urb), -+ urb_priv->urb_num); -+ if(uld->status != uld->urb->status) { -+ errno_dbg("Later-finish URB with status:%d, later-status:%d\n", -+ uld->urb->status, uld->status); -+ } -+ if(uld != urb_priv->later_data) { -+ panic("Scheduled uld not same as URBs uld\n"); -+ } -+ tc_finish_urb(uld->hcd, uld->urb, uld->status); -+ } else { -+ late_warn("Ignoring later finish of URB:0x%x[%d]" -+ ", urb_num doesn't match current URB:0x%x[%d]", -+ (unsigned int)(uld->urb), uld->urb_num, -+ (unsigned int)(uld->urb), urb_priv->urb_num); -+ } -+ } -+ local_irq_restore(flags); -+ kmem_cache_free(later_data_cache, uld); -+} -+ -+static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb, -+ int status) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ struct urb_later_data* uld; -+ -+ ASSERT(urb_priv); -+ -+ if(urb_priv->later_data != NULL) { -+ /* Later-finish allready scheduled for this URB, just update status to -+ return when finishing later */ -+ errno_dbg("Later-finish schedule change URB status:%d with new" -+ " status:%d\n", urb_priv->later_data->status, status); -+ -+ urb_priv->later_data->status = status; -+ return; -+ } -+ -+ uld = kmem_cache_alloc(later_data_cache, SLAB_ATOMIC); -+ ASSERT(uld); -+ -+ uld->hcd = hcd; -+ uld->urb = urb; -+ uld->urb_num = urb_priv->urb_num; -+ uld->status = status; -+ -+ INIT_WORK(&uld->ws, tc_finish_urb_later_proc, uld); -+ urb_priv->later_data = uld; -+ -+ /* Schedule the finishing of the URB to happen later */ -+ schedule_delayed_work(&uld->ws, LATER_TIMER_DELAY); -+} -+ -+static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb, -+ int status); -+ -+static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status) { -+ struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ int epid; -+ char toggle; -+ int urb_num; -+ -+ DBFENTER; -+ ASSERT(urb_priv != NULL); -+ epid = urb_priv->epid; -+ urb_num = urb_priv->urb_num; -+ -+ if(urb != activeUrbList[epid]) { -+ if(urb_list_entry(urb, epid)) { -+ /* Remove this URB from the list. Only happens when URB are finished -+ before having been processed (dequeing) */ -+ urb_list_del(urb, epid); -+ } else { -+ tc_warn("Finishing of URB:0x%x[%d] neither active or in queue for" -+ " epid:%d\n", (unsigned int)urb, urb_num, epid); -+ } -+ } -+ -+ /* Cancel any pending later-finish of this URB */ -+ if(urb_priv->later_data) { -+ urb_priv->later_data->urb = NULL; -+ } -+ -+ /* For an IN pipe, we always set the actual length, regardless of whether -+ there was an error or not (which means the device driver can use the data -+ if it wants to). */ -+ if(usb_pipein(urb->pipe)) { -+ urb->actual_length = urb_priv->rx_offset; -+ } else { -+ /* Set actual_length for OUT urbs also; the USB mass storage driver seems -+ to want that. */ -+ if (status == 0 && urb->status == -EINPROGRESS) { -+ urb->actual_length = urb->transfer_buffer_length; -+ } else { -+ /* We wouldn't know of any partial writes if there was an error. */ -+ urb->actual_length = 0; -+ } -+ } -+ -+ -+ /* URB status mangling */ -+ if(urb->status == -EINPROGRESS) { -+ /* The USB core hasn't changed the status, let's set our finish status */ -+ urb->status = status; -+ -+ if ((status == 0) && (urb->transfer_flags & URB_SHORT_NOT_OK) && -+ usb_pipein(urb->pipe) && -+ (urb->actual_length != urb->transfer_buffer_length)) { -+ /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's -+ max length) is to be treated as an error. */ -+ errno_dbg("Finishing URB:0x%x[%d] with SHORT_NOT_OK flag and short" -+ " data:%d\n", (unsigned int)urb, urb_num, -+ urb->actual_length); -+ urb->status = -EREMOTEIO; -+ } -+ -+ if(urb_priv->urb_state == UNLINK) { -+ /* URB has been requested to be unlinked asynchronously */ -+ urb->status = -ECONNRESET; -+ errno_dbg("Fixing unlink status of URB:0x%x[%d] to:%d\n", -+ (unsigned int)urb, urb_num, urb->status); -+ } -+ } else { -+ /* The USB Core wants to signal some error via the URB, pass it through */ -+ } -+ -+ /* use completely different finish function for Isoc URBs */ -+ if(usb_pipeisoc(urb->pipe)) { -+ tc_finish_isoc_urb(hcd, urb, status); -+ return; -+ } -+ -+ /* Do special unlinking of EPs for Intr traffic */ -+ if(usb_pipeint(urb->pipe)) { -+ tc_dma_unlink_intr_urb(urb); -+ } -+ -+ /* Release allocated bandwidth for periodic transfers */ -+ if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) -+ usb_release_bandwidth(urb->dev, urb, 0); -+ -+ /* This URB is active on EP */ -+ if(urb == activeUrbList[epid]) { -+ /* We need to fiddle with the toggle bits because the hardware doesn't do -+ it for us. */ -+ toggle = etrax_epid_get_toggle(epid, usb_pipeout(urb->pipe)); -+ usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), -+ usb_pipeout(urb->pipe), toggle); -+ -+ /* Checks for Ctrl and Bulk EPs */ -+ switch(usb_pipetype(urb->pipe)) { -+ case PIPE_BULK: -+ /* Check so Bulk EP realy is disabled before finishing active URB */ -+ ASSERT((TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) == -+ IO_STATE(USB_EP_command, enable, no)); -+ /* Disable sub-pointer for EP to avoid next tx_interrupt() to -+ process Bulk EP. */ -+ TxBulkEPList[epid].sub = 0; -+ /* No need to wait for the DMA before changing the next pointer. -+ The modulo NBR_OF_EPIDS isn't actually necessary, since we will never use -+ the last one (INVALID_EPID) for actual traffic. */ -+ TxBulkEPList[epid].next = -+ virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); -+ break; -+ case PIPE_CONTROL: -+ /* Check so Ctrl EP realy is disabled before finishing active URB */ -+ ASSERT((TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) == -+ IO_STATE(USB_EP_command, enable, no)); -+ /* Disable sub-pointer for EP to avoid next tx_interrupt() to -+ process Ctrl EP. */ -+ TxCtrlEPList[epid].sub = 0; -+ break; -+ } -+ } -+ -+ /* Free HC-private URB data*/ -+ urb_priv_free(hcd, urb); -+ -+ if(urb->status) { -+ errno_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n", -+ (unsigned int)urb, urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb->actual_length, urb->status); -+ } else { -+ tc_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n", -+ (unsigned int)urb, urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb->actual_length, urb->status); -+ } -+ -+ /* If we just finished an active URB, clear active pointer. */ -+ if (urb == activeUrbList[epid]) { -+ /* Make URB not active on EP anymore */ -+ activeUrbList[epid] = NULL; -+ -+ if(urb->status == 0) { -+ /* URB finished sucessfully, process queue to see if there are any more -+ URBs waiting before we call completion function.*/ -+ if(crisv10_hcd->running) { -+ /* Only process queue if USB controller is running */ -+ tc_dma_process_queue(epid); -+ } else { -+ tc_warn("No processing of queue for epid:%d, USB Controller not" -+ " running\n", epid); -+ } -+ } -+ } -+ -+ /* Hand the URB from HCD to its USB device driver, using its completion -+ functions */ -+ usb_hcd_giveback_urb (hcd, urb); -+ -+ /* Check the queue once more if the URB returned with error, because we -+ didn't do it before the completion function because the specification -+ states that the queue should not restart until all it's unlinked -+ URBs have been fully retired, with the completion functions run */ -+ if(crisv10_hcd->running) { -+ /* Only process queue if USB controller is running */ -+ tc_dma_process_queue(epid); -+ } else { -+ tc_warn("No processing of queue for epid:%d, USB Controller not running\n", -+ epid); -+ } -+ -+ DBFEXIT; -+} -+ -+static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb, -+ int status) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ int epid, i; -+ volatile int timeout = 10000; -+ -+ ASSERT(urb_priv); -+ epid = urb_priv->epid; -+ -+ ASSERT(usb_pipeisoc(urb->pipe)); -+ -+ /* Set that all isoc packets have status and length set before -+ completing the urb. */ -+ for (i = urb_priv->isoc_packet_counter; i < urb->number_of_packets; i++){ -+ urb->iso_frame_desc[i].actual_length = 0; -+ urb->iso_frame_desc[i].status = -EPROTO; -+ } -+ -+ /* Check if the URB is currently active (done or error) */ -+ if(urb == activeUrbList[epid]) { -+ /* Check if there are another In Isoc URB queued for this epid */ -+ if (!list_empty(&urb_list[epid])&& !epid_state[epid].disabled) { -+ /* Move it from queue to active and mark it started so Isoc transfers -+ won't be interrupted. -+ All Isoc URBs data transfers are already added to DMA lists so we -+ don't have to insert anything in DMA lists here. */ -+ activeUrbList[epid] = urb_list_first(epid); -+ ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_state = -+ STARTED; -+ urb_list_del(activeUrbList[epid], epid); -+ -+ if(urb->status) { -+ errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)" -+ " status:%d, new waiting URB:0x%x[%d]\n", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb_priv->isoc_packet_counter, -+ urb->number_of_packets, urb->status, -+ (unsigned int)activeUrbList[epid], -+ ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_num); -+ } -+ -+ } else { /* No other URB queued for this epid */ -+ if(urb->status) { -+ errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)" -+ " status:%d, no new URB waiting\n", -+ (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), -+ str_type(urb->pipe), urb_priv->isoc_packet_counter, -+ urb->number_of_packets, urb->status); -+ } -+ -+ /* Check if EP is still enabled, then shut it down. */ -+ if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ isoc_dbg("Isoc EP enabled for epid:%d, disabling it\n", epid); -+ -+ /* Should only occur for In Isoc EPs where SB isn't consumed. */ -+ ASSERT(usb_pipein(urb->pipe)); -+ -+ /* Disable it and wait for it to stop */ -+ TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); -+ -+ /* Ah, the luxury of busy-wait. */ -+ while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Isoc to leave EP for epid:%d\n", epid); -+ } -+ } -+ -+ /* Unlink SB to say that epid is finished. */ -+ TxIsocEPList[epid].sub = 0; -+ TxIsocEPList[epid].hw_len = 0; -+ -+ /* No URB active for EP anymore */ -+ activeUrbList[epid] = NULL; -+ } -+ } else { /* Finishing of not active URB (queued up with SBs thought) */ -+ isoc_warn("finish_isoc_urb (URB:0x%x %s) (%d of %d packets) status:%d," -+ " SB queued but not active\n", -+ (unsigned int)urb, str_dir(urb->pipe), -+ urb_priv->isoc_packet_counter, urb->number_of_packets, -+ urb->status); -+ if(usb_pipeout(urb->pipe)) { -+ /* Finishing of not yet active Out Isoc URB needs unlinking of SBs. */ -+ struct USB_SB_Desc *iter_sb, *prev_sb, *next_sb; -+ -+ iter_sb = TxIsocEPList[epid].sub ? -+ phys_to_virt(TxIsocEPList[epid].sub) : 0; -+ prev_sb = 0; -+ -+ /* SB that is linked before this URBs first SB */ -+ while (iter_sb && (iter_sb != urb_priv->first_sb)) { -+ prev_sb = iter_sb; -+ iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -+ } -+ -+ if (iter_sb == 0) { -+ /* Unlink of the URB currently being transmitted. */ -+ prev_sb = 0; -+ iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0; -+ } -+ -+ while (iter_sb && (iter_sb != urb_priv->last_sb)) { -+ iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -+ } -+ -+ if (iter_sb) { -+ next_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; -+ } else { -+ /* This should only happen if the DMA has completed -+ processing the SB list for this EP while interrupts -+ are disabled. */ -+ isoc_dbg("Isoc urb not found, already sent?\n"); -+ next_sb = 0; -+ } -+ if (prev_sb) { -+ prev_sb->next = next_sb ? virt_to_phys(next_sb) : 0; -+ } else { -+ TxIsocEPList[epid].sub = next_sb ? virt_to_phys(next_sb) : 0; -+ } -+ } -+ } -+ -+ /* Free HC-private URB data*/ -+ urb_priv_free(hcd, urb); -+ -+ usb_release_bandwidth(urb->dev, urb, 0); -+ -+ /* Hand the URB from HCD to its USB device driver, using its completion -+ functions */ -+ usb_hcd_giveback_urb (hcd, urb); -+} -+ -+static __u32 urb_num = 0; -+ -+/* allocate and initialize URB private data */ -+static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid, -+ int mem_flags) { -+ struct crisv10_urb_priv *urb_priv; -+ -+ urb_priv = kmalloc(sizeof *urb_priv, mem_flags); -+ if (!urb_priv) -+ return -ENOMEM; -+ memset(urb_priv, 0, sizeof *urb_priv); -+ -+ urb_priv->epid = epid; -+ urb_priv->urb_state = NOT_STARTED; -+ -+ urb->hcpriv = urb_priv; -+ /* Assign URB a sequence number, and increment counter */ -+ urb_priv->urb_num = urb_num; -+ urb_num++; -+ return 0; -+} -+ -+/* free URB private data */ -+static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb) { -+ int i; -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ ASSERT(urb_priv != 0); -+ -+ /* Check it has any SBs linked that needs to be freed*/ -+ if(urb_priv->first_sb != NULL) { -+ struct USB_SB_Desc *next_sb, *first_sb, *last_sb; -+ int i = 0; -+ first_sb = urb_priv->first_sb; -+ last_sb = urb_priv->last_sb; -+ ASSERT(last_sb); -+ while(first_sb != last_sb) { -+ next_sb = (struct USB_SB_Desc *)phys_to_virt(first_sb->next); -+ kmem_cache_free(usb_desc_cache, first_sb); -+ first_sb = next_sb; -+ i++; -+ } -+ kmem_cache_free(usb_desc_cache, last_sb); -+ i++; -+ } -+ -+ /* Check if it has any EPs in its Intr pool that also needs to be freed */ -+ if(urb_priv->intr_ep_pool_length > 0) { -+ for(i = 0; i < urb_priv->intr_ep_pool_length; i++) { -+ kfree(urb_priv->intr_ep_pool[i]); -+ } -+ /* -+ tc_dbg("Freed %d EPs from URB:0x%x EP pool\n", -+ urb_priv->intr_ep_pool_length, (unsigned int)urb); -+ */ -+ } -+ -+ kfree(urb_priv); -+ urb->hcpriv = NULL; -+} -+ -+static int ep_priv_create(struct usb_host_endpoint *ep, int mem_flags) { -+ struct crisv10_ep_priv *ep_priv; -+ -+ ep_priv = kmalloc(sizeof *ep_priv, mem_flags); -+ if (!ep_priv) -+ return -ENOMEM; -+ memset(ep_priv, 0, sizeof *ep_priv); -+ -+ ep->hcpriv = ep_priv; -+ return 0; -+} -+ -+static void ep_priv_free(struct usb_host_endpoint *ep) { -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ ASSERT(ep_priv); -+ kfree(ep_priv); -+ ep->hcpriv = NULL; -+} -+ -+/* EPID handling functions, managing EP-list in Etrax through wrappers */ -+/* ------------------------------------------------------------------- */ -+ -+/* Sets up a new EPID for an endpoint or returns existing if found */ -+static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb, -+ int mem_flags) { -+ int epid; -+ char devnum, endpoint, out_traffic, slow; -+ int maxlen; -+ __u32 epid_data; -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ -+ DBFENTER; -+ -+ /* Check if a valid epid already is setup for this endpoint */ -+ if(ep_priv != NULL) { -+ return ep_priv->epid; -+ } -+ -+ /* We must find and initiate a new epid for this urb. */ -+ epid = tc_allocate_epid(); -+ -+ if (epid == -1) { -+ /* Failed to allocate a new epid. */ -+ DBFEXIT; -+ return epid; -+ } -+ -+ /* We now have a new epid to use. Claim it. */ -+ epid_state[epid].inuse = 1; -+ -+ /* Init private data for new endpoint */ -+ if(ep_priv_create(ep, mem_flags) != 0) { -+ return -ENOMEM; -+ } -+ ep_priv = ep->hcpriv; -+ ep_priv->epid = epid; -+ -+ devnum = usb_pipedevice(urb->pipe); -+ endpoint = usb_pipeendpoint(urb->pipe); -+ slow = (urb->dev->speed == USB_SPEED_LOW); -+ maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); -+ -+ if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { -+ /* We want both IN and OUT control traffic to be put on the same -+ EP/SB list. */ -+ out_traffic = 1; -+ } else { -+ out_traffic = usb_pipeout(urb->pipe); -+ } -+ -+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { -+ epid_data = IO_STATE(R_USB_EPT_DATA_ISO, valid, yes) | -+ /* FIXME: Change any to the actual port? */ -+ IO_STATE(R_USB_EPT_DATA_ISO, port, any) | -+ IO_FIELD(R_USB_EPT_DATA_ISO, max_len, maxlen) | -+ IO_FIELD(R_USB_EPT_DATA_ISO, ep, endpoint) | -+ IO_FIELD(R_USB_EPT_DATA_ISO, dev, devnum); -+ etrax_epid_iso_set(epid, epid_data); -+ } else { -+ epid_data = IO_STATE(R_USB_EPT_DATA, valid, yes) | -+ IO_FIELD(R_USB_EPT_DATA, low_speed, slow) | -+ /* FIXME: Change any to the actual port? */ -+ IO_STATE(R_USB_EPT_DATA, port, any) | -+ IO_FIELD(R_USB_EPT_DATA, max_len, maxlen) | -+ IO_FIELD(R_USB_EPT_DATA, ep, endpoint) | -+ IO_FIELD(R_USB_EPT_DATA, dev, devnum); -+ etrax_epid_set(epid, epid_data); -+ } -+ -+ epid_state[epid].out_traffic = out_traffic; -+ epid_state[epid].type = usb_pipetype(urb->pipe); -+ -+ tc_warn("Setting up ep:0x%x epid:%d (addr:%d endp:%d max_len:%d %s %s %s)\n", -+ (unsigned int)ep, epid, devnum, endpoint, maxlen, -+ str_type(urb->pipe), out_traffic ? "out" : "in", -+ slow ? "low" : "full"); -+ -+ /* Enable Isoc eof interrupt if we set up the first Isoc epid */ -+ if(usb_pipeisoc(urb->pipe)) { -+ isoc_epid_counter++; -+ if(isoc_epid_counter == 1) { -+ isoc_warn("Enabled Isoc eof interrupt\n"); -+ *R_USB_IRQ_MASK_SET |= IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set); -+ } -+ } -+ -+ DBFEXIT; -+ return epid; -+} -+ -+static void tc_free_epid(struct usb_host_endpoint *ep) { -+ unsigned long flags; -+ struct crisv10_ep_priv *ep_priv = ep->hcpriv; -+ int epid; -+ volatile int timeout = 10000; -+ -+ DBFENTER; -+ -+ if (ep_priv == NULL) { -+ tc_warn("Trying to free unused epid on ep:0x%x\n", (unsigned int)ep); -+ DBFEXIT; -+ return; -+ } -+ -+ epid = ep_priv->epid; -+ -+ /* Disable Isoc eof interrupt if we free the last Isoc epid */ -+ if(epid_isoc(epid)) { -+ ASSERT(isoc_epid_counter > 0); -+ isoc_epid_counter--; -+ if(isoc_epid_counter == 0) { -+ *R_USB_IRQ_MASK_SET &= ~IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set); -+ isoc_warn("Disabled Isoc eof interrupt\n"); -+ } -+ } -+ -+ /* Take lock manualy instead of in epid_x_x wrappers, -+ because we need to be polling here */ -+ spin_lock_irqsave(&etrax_epid_lock, flags); -+ -+ *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); -+ nop(); -+ while((*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for epid:%d to drop hold\n", epid); -+ } -+ /* This will, among other things, set the valid field to 0. */ -+ *R_USB_EPT_DATA = 0; -+ spin_unlock_irqrestore(&etrax_epid_lock, flags); -+ -+ /* Free resource in software state info list */ -+ epid_state[epid].inuse = 0; -+ -+ /* Free private endpoint data */ -+ ep_priv_free(ep); -+ -+ DBFEXIT; -+} -+ -+static int tc_allocate_epid(void) { -+ int i; -+ DBFENTER; -+ for (i = 0; i < NBR_OF_EPIDS; i++) { -+ if (!epid_inuse(i)) { -+ DBFEXIT; -+ return i; -+ } -+ } -+ -+ tc_warn("Found no free epids\n"); -+ DBFEXIT; -+ return -1; -+} -+ -+ -+/* Wrappers around the list functions (include/linux/list.h). */ -+/* ---------------------------------------------------------- */ -+static inline int __urb_list_empty(int epid) { -+ int retval; -+ retval = list_empty(&urb_list[epid]); -+ return retval; -+} -+ -+/* Returns first urb for this epid, or NULL if list is empty. */ -+static inline struct urb *urb_list_first(int epid) { -+ unsigned long flags; -+ struct urb *first_urb = 0; -+ spin_lock_irqsave(&urb_list_lock, flags); -+ if (!__urb_list_empty(epid)) { -+ /* Get the first urb (i.e. head->next). */ -+ urb_entry_t *urb_entry = list_entry((&urb_list[epid])->next, urb_entry_t, list); -+ first_urb = urb_entry->urb; -+ } -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return first_urb; -+} -+ -+/* Adds an urb_entry last in the list for this epid. */ -+static inline void urb_list_add(struct urb *urb, int epid, int mem_flags) { -+ unsigned long flags; -+ urb_entry_t *urb_entry = (urb_entry_t *)kmalloc(sizeof(urb_entry_t), mem_flags); -+ ASSERT(urb_entry); -+ -+ urb_entry->urb = urb; -+ spin_lock_irqsave(&urb_list_lock, flags); -+ list_add_tail(&urb_entry->list, &urb_list[epid]); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+} -+ -+/* Search through the list for an element that contains this urb. (The list -+ is expected to be short and the one we are about to delete will often be -+ the first in the list.) -+ Should be protected by spin_locks in calling function */ -+static inline urb_entry_t *__urb_list_entry(struct urb *urb, int epid) { -+ struct list_head *entry; -+ struct list_head *tmp; -+ urb_entry_t *urb_entry; -+ -+ list_for_each_safe(entry, tmp, &urb_list[epid]) { -+ urb_entry = list_entry(entry, urb_entry_t, list); -+ ASSERT(urb_entry); -+ ASSERT(urb_entry->urb); -+ -+ if (urb_entry->urb == urb) { -+ return urb_entry; -+ } -+ } -+ return 0; -+} -+ -+/* Same function as above but for global use. Protects list by spinlock */ -+static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return (urb_entry); -+} -+ -+/* Delete an urb from the list. */ -+static inline void urb_list_del(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ -+ /* Delete entry and free. */ -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ ASSERT(urb_entry); -+ -+ list_del(&urb_entry->list); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ kfree(urb_entry); -+} -+ -+/* Move an urb to the end of the list. */ -+static inline void urb_list_move_last(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ ASSERT(urb_entry); -+ -+ list_del(&urb_entry->list); -+ list_add_tail(&urb_entry->list, &urb_list[epid]); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+} -+ -+/* Get the next urb in the list. */ -+static inline struct urb *urb_list_next(struct urb *urb, int epid) { -+ unsigned long flags; -+ urb_entry_t *urb_entry; -+ -+ spin_lock_irqsave(&urb_list_lock, flags); -+ urb_entry = __urb_list_entry(urb, epid); -+ ASSERT(urb_entry); -+ -+ if (urb_entry->list.next != &urb_list[epid]) { -+ struct list_head *elem = urb_entry->list.next; -+ urb_entry = list_entry(elem, urb_entry_t, list); -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return urb_entry->urb; -+ } else { -+ spin_unlock_irqrestore(&urb_list_lock, flags); -+ return NULL; -+ } -+} -+ -+struct USB_EP_Desc* create_ep(int epid, struct USB_SB_Desc* sb_desc, -+ int mem_flags) { -+ struct USB_EP_Desc *ep_desc; -+ ep_desc = (struct USB_EP_Desc *) kmem_cache_alloc(usb_desc_cache, mem_flags); -+ if(ep_desc == NULL) -+ return NULL; -+ memset(ep_desc, 0, sizeof(struct USB_EP_Desc)); -+ -+ ep_desc->hw_len = 0; -+ ep_desc->command = (IO_FIELD(USB_EP_command, epid, epid) | -+ IO_STATE(USB_EP_command, enable, yes)); -+ if(sb_desc == NULL) { -+ ep_desc->sub = 0; -+ } else { -+ ep_desc->sub = virt_to_phys(sb_desc); -+ } -+ return ep_desc; -+} -+ -+#define TT_ZOUT 0 -+#define TT_IN 1 -+#define TT_OUT 2 -+#define TT_SETUP 3 -+ -+#define CMD_EOL IO_STATE(USB_SB_command, eol, yes) -+#define CMD_INTR IO_STATE(USB_SB_command, intr, yes) -+#define CMD_FULL IO_STATE(USB_SB_command, full, yes) -+ -+/* Allocation and setup of a generic SB. Used to create SETUP, OUT and ZOUT -+ SBs. Also used by create_sb_in() to avoid same allocation procedure at two -+ places */ -+struct USB_SB_Desc* create_sb(struct USB_SB_Desc* sb_prev, int tt, void* data, -+ int datalen, int mem_flags) { -+ struct USB_SB_Desc *sb_desc; -+ sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags); -+ if(sb_desc == NULL) -+ return NULL; -+ memset(sb_desc, 0, sizeof(struct USB_SB_Desc)); -+ -+ sb_desc->command = IO_FIELD(USB_SB_command, tt, tt) | -+ IO_STATE(USB_SB_command, eot, yes); -+ -+ sb_desc->sw_len = datalen; -+ if(data != NULL) { -+ sb_desc->buf = virt_to_phys(data); -+ } else { -+ sb_desc->buf = 0; -+ } -+ if(sb_prev != NULL) { -+ sb_prev->next = virt_to_phys(sb_desc); -+ } -+ return sb_desc; -+} -+ -+/* Creates a copy of an existing SB by allocation space for it and copy -+ settings */ -+struct USB_SB_Desc* create_sb_copy(struct USB_SB_Desc* sb_orig, int mem_flags) { -+ struct USB_SB_Desc *sb_desc; -+ sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags); -+ if(sb_desc == NULL) -+ return NULL; -+ -+ memcpy(sb_desc, sb_orig, sizeof(struct USB_SB_Desc)); -+ return sb_desc; -+} -+ -+/* A specific create_sb function for creation of in SBs. This is due to -+ that datalen in In SBs shows how many packets we are expecting. It also -+ sets up the rem field to show if how many bytes we expect in last packet -+ if it's not a full one */ -+struct USB_SB_Desc* create_sb_in(struct USB_SB_Desc* sb_prev, int datalen, -+ int maxlen, int mem_flags) { -+ struct USB_SB_Desc *sb_desc; -+ sb_desc = create_sb(sb_prev, TT_IN, NULL, -+ datalen ? (datalen - 1) / maxlen + 1 : 0, mem_flags); -+ if(sb_desc == NULL) -+ return NULL; -+ sb_desc->command |= IO_FIELD(USB_SB_command, rem, datalen % maxlen); -+ return sb_desc; -+} -+ -+void set_sb_cmds(struct USB_SB_Desc *sb_desc, __u16 flags) { -+ sb_desc->command |= flags; -+} -+ -+int create_sb_for_urb(struct urb *urb, int mem_flags) { -+ int is_out = !usb_pipein(urb->pipe); -+ int type = usb_pipetype(urb->pipe); -+ int maxlen = usb_maxpacket(urb->dev, urb->pipe, is_out); -+ int buf_len = urb->transfer_buffer_length; -+ void *buf = buf_len > 0 ? urb->transfer_buffer : NULL; -+ struct USB_SB_Desc *sb_desc = NULL; -+ -+ struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv != NULL); -+ -+ switch(type) { -+ case PIPE_CONTROL: -+ /* Setup stage */ -+ sb_desc = create_sb(NULL, TT_SETUP, urb->setup_packet, 8, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ set_sb_cmds(sb_desc, CMD_FULL); -+ -+ /* Attach first SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ -+ if (is_out) { /* Out Control URB */ -+ /* If this Control OUT transfer has an optional data stage we add -+ an OUT token before the mandatory IN (status) token */ -+ if ((buf_len > 0) && buf) { -+ sb_desc = create_sb(sb_desc, TT_OUT, buf, buf_len, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ -+ /* Status stage */ -+ /* The data length has to be exactly 1. This is due to a requirement -+ of the USB specification that a host must be prepared to receive -+ data in the status phase */ -+ sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ } else { /* In control URB */ -+ /* Data stage */ -+ sb_desc = create_sb_in(sb_desc, buf_len, maxlen, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ -+ /* Status stage */ -+ /* Read comment at zout_buffer declaration for an explanation to this. */ -+ sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ /* Set descriptor interrupt flag for in URBs so we can finish URB after -+ zout-packet has been sent */ -+ set_sb_cmds(sb_desc, CMD_INTR | CMD_FULL); -+ } -+ /* Set end-of-list flag in last SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ /* Attach last SB to URB */ -+ urb_priv->last_sb = sb_desc; -+ break; -+ -+ case PIPE_BULK: -+ if (is_out) { /* Out Bulk URB */ -+ sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ /* The full field is set to yes, even if we don't actually check that -+ this is a full-length transfer (i.e., that transfer_buffer_length % -+ maxlen = 0). -+ Setting full prevents the USB controller from sending an empty packet -+ in that case. However, if URB_ZERO_PACKET was set we want that. */ -+ if (!(urb->transfer_flags & URB_ZERO_PACKET)) { -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ } else { /* In Bulk URB */ -+ sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ } -+ /* Set end-of-list flag for last SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ -+ /* Attach SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ urb_priv->last_sb = sb_desc; -+ break; -+ -+ case PIPE_INTERRUPT: -+ if(is_out) { /* Out Intr URB */ -+ sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ -+ /* The full field is set to yes, even if we don't actually check that -+ this is a full-length transfer (i.e., that transfer_buffer_length % -+ maxlen = 0). -+ Setting full prevents the USB controller from sending an empty packet -+ in that case. However, if URB_ZERO_PACKET was set we want that. */ -+ if (!(urb->transfer_flags & URB_ZERO_PACKET)) { -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ /* Only generate TX interrupt if it's a Out URB*/ -+ set_sb_cmds(sb_desc, CMD_INTR); -+ -+ } else { /* In Intr URB */ -+ sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ } -+ /* Set end-of-list flag for last SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ -+ /* Attach SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ urb_priv->last_sb = sb_desc; -+ -+ break; -+ case PIPE_ISOCHRONOUS: -+ if(is_out) { /* Out Isoc URB */ -+ int i; -+ if(urb->number_of_packets == 0) { -+ tc_err("Can't create SBs for Isoc URB with zero packets\n"); -+ return -EPIPE; -+ } -+ /* Create one SB descriptor for each packet and link them together. */ -+ for(i = 0; i < urb->number_of_packets; i++) { -+ if (urb->iso_frame_desc[i].length > 0) { -+ -+ sb_desc = create_sb(sb_desc, TT_OUT, urb->transfer_buffer + -+ urb->iso_frame_desc[i].offset, -+ urb->iso_frame_desc[i].length, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ -+ /* Check if it's a full length packet */ -+ if (urb->iso_frame_desc[i].length == -+ usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) { -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ -+ } else { /* zero length packet */ -+ sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ set_sb_cmds(sb_desc, CMD_FULL); -+ } -+ /* Attach first SB descriptor to URB */ -+ if (i == 0) { -+ urb_priv->first_sb = sb_desc; -+ } -+ } -+ /* Set interrupt and end-of-list flags in last SB */ -+ set_sb_cmds(sb_desc, CMD_INTR | CMD_EOL); -+ /* Attach last SB descriptor to URB */ -+ urb_priv->last_sb = sb_desc; -+ tc_dbg("Created %d out SBs for Isoc URB:0x%x\n", -+ urb->number_of_packets, (unsigned int)urb); -+ } else { /* In Isoc URB */ -+ /* Actual number of packets is not relevant for periodic in traffic as -+ long as it is more than zero. Set to 1 always. */ -+ sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags); -+ if(sb_desc == NULL) -+ return -ENOMEM; -+ /* Set end-of-list flags for SB */ -+ set_sb_cmds(sb_desc, CMD_EOL); -+ -+ /* Attach SB to URB */ -+ urb_priv->first_sb = sb_desc; -+ urb_priv->last_sb = sb_desc; -+ } -+ break; -+ default: -+ tc_err("Unknown pipe-type\n"); -+ return -EPIPE; -+ break; -+ } -+ return 0; -+} -+ -+int init_intr_urb(struct urb *urb, int mem_flags) { -+ struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ struct USB_EP_Desc* ep_desc; -+ int interval; -+ int i; -+ int ep_count; -+ -+ ASSERT(urb_priv != NULL); -+ ASSERT(usb_pipeint(urb->pipe)); -+ /* We can't support interval longer than amount of eof descriptors in -+ TxIntrEPList */ -+ if(urb->interval > MAX_INTR_INTERVAL) { -+ tc_err("Interrupt interval %dms too big (max: %dms)\n", urb->interval, -+ MAX_INTR_INTERVAL); -+ return -EINVAL; -+ } -+ -+ /* We assume that the SB descriptors already have been setup */ -+ ASSERT(urb_priv->first_sb != NULL); -+ -+ /* Round of the interval to 2^n, it is obvious that this code favours -+ smaller numbers, but that is actually a good thing */ -+ /* FIXME: The "rounding error" for larger intervals will be quite -+ large. For in traffic this shouldn't be a problem since it will only -+ mean that we "poll" more often. */ -+ interval = urb->interval; -+ for (i = 0; interval; i++) { -+ interval = interval >> 1; -+ } -+ urb_priv->interval = 1 << (i - 1); -+ -+ /* We can only have max interval for Out Interrupt due to that we can only -+ handle one linked in EP for a certain epid in the Intr descr array at the -+ time. The USB Controller in the Etrax 100LX continues to process Intr EPs -+ so we have no way of knowing which one that caused the actual transfer if -+ we have several linked in. */ -+ if(usb_pipeout(urb->pipe)) { -+ urb_priv->interval = MAX_INTR_INTERVAL; -+ } -+ -+ /* Calculate amount of EPs needed */ -+ ep_count = MAX_INTR_INTERVAL / urb_priv->interval; -+ -+ for(i = 0; i < ep_count; i++) { -+ ep_desc = create_ep(urb_priv->epid, urb_priv->first_sb, mem_flags); -+ if(ep_desc == NULL) { -+ /* Free any descriptors that we may have allocated before failure */ -+ while(i > 0) { -+ i--; -+ kfree(urb_priv->intr_ep_pool[i]); -+ } -+ return -ENOMEM; -+ } -+ urb_priv->intr_ep_pool[i] = ep_desc; -+ } -+ urb_priv->intr_ep_pool_length = ep_count; -+ return 0; -+} -+ -+/* DMA RX/TX functions */ -+/* ----------------------- */ -+ -+static void tc_dma_init_rx_list(void) { -+ int i; -+ -+ /* Setup descriptor list except last one */ -+ for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) { -+ RxDescList[i].sw_len = RX_DESC_BUF_SIZE; -+ RxDescList[i].command = 0; -+ RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]); -+ RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); -+ RxDescList[i].hw_len = 0; -+ RxDescList[i].status = 0; -+ -+ /* DMA IN cache bug. (struct etrax_dma_descr has the same layout as -+ USB_IN_Desc for the relevant fields.) */ -+ prepare_rx_descriptor((struct etrax_dma_descr*)&RxDescList[i]); -+ -+ } -+ /* Special handling of last descriptor */ -+ RxDescList[i].sw_len = RX_DESC_BUF_SIZE; -+ RxDescList[i].command = IO_STATE(USB_IN_command, eol, yes); -+ RxDescList[i].next = virt_to_phys(&RxDescList[0]); -+ RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); -+ RxDescList[i].hw_len = 0; -+ RxDescList[i].status = 0; -+ -+ /* Setup list pointers that show progress in list */ -+ myNextRxDesc = &RxDescList[0]; -+ myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; -+ -+ flush_etrax_cache(); -+ /* Point DMA to first descriptor in list and start it */ -+ *R_DMA_CH9_FIRST = virt_to_phys(myNextRxDesc); -+ *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, start); -+} -+ -+ -+static void tc_dma_init_tx_bulk_list(void) { -+ int i; -+ volatile struct USB_EP_Desc *epDescr; -+ -+ for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -+ epDescr = &(TxBulkEPList[i]); -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxBulkEPList[i + 1]); -+ -+ /* Initiate two EPs, disabled and with the eol flag set. No need for any -+ preserved epid. */ -+ -+ /* The first one has the intr flag set so we get an interrupt when the DMA -+ channel is about to become disabled. */ -+ CHECK_ALIGN(&TxBulkDummyEPList[i][0]); -+ TxBulkDummyEPList[i][0].hw_len = 0; -+ TxBulkDummyEPList[i][0].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | -+ IO_STATE(USB_EP_command, eol, yes) | -+ IO_STATE(USB_EP_command, intr, yes)); -+ TxBulkDummyEPList[i][0].sub = 0; -+ TxBulkDummyEPList[i][0].next = virt_to_phys(&TxBulkDummyEPList[i][1]); -+ -+ /* The second one. */ -+ CHECK_ALIGN(&TxBulkDummyEPList[i][1]); -+ TxBulkDummyEPList[i][1].hw_len = 0; -+ TxBulkDummyEPList[i][1].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | -+ IO_STATE(USB_EP_command, eol, yes)); -+ TxBulkDummyEPList[i][1].sub = 0; -+ /* The last dummy's next pointer is the same as the current EP's next pointer. */ -+ TxBulkDummyEPList[i][1].next = virt_to_phys(&TxBulkEPList[i + 1]); -+ } -+ -+ /* Special handling of last descr in list, make list circular */ -+ epDescr = &TxBulkEPList[i]; -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_STATE(USB_EP_command, eol, yes) | -+ IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxBulkEPList[0]); -+ -+ /* Init DMA sub-channel pointers to last item in each list */ -+ *R_DMA_CH8_SUB0_EP = virt_to_phys(&TxBulkEPList[i]); -+ /* No point in starting the bulk channel yet. -+ *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -+} -+ -+static void tc_dma_init_tx_ctrl_list(void) { -+ int i; -+ volatile struct USB_EP_Desc *epDescr; -+ -+ for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -+ epDescr = &(TxCtrlEPList[i]); -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxCtrlEPList[i + 1]); -+ } -+ /* Special handling of last descr in list, make list circular */ -+ epDescr = &TxCtrlEPList[i]; -+ CHECK_ALIGN(epDescr); -+ epDescr->hw_len = 0; -+ epDescr->command = IO_STATE(USB_EP_command, eol, yes) | -+ IO_FIELD(USB_EP_command, epid, i); -+ epDescr->sub = 0; -+ epDescr->next = virt_to_phys(&TxCtrlEPList[0]); -+ -+ /* Init DMA sub-channel pointers to last item in each list */ -+ *R_DMA_CH8_SUB1_EP = virt_to_phys(&TxCtrlEPList[i]); -+ /* No point in starting the ctrl channel yet. -+ *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -+} -+ -+ -+static void tc_dma_init_tx_intr_list(void) { -+ int i; -+ -+ TxIntrSB_zout.sw_len = 1; -+ TxIntrSB_zout.next = 0; -+ TxIntrSB_zout.buf = virt_to_phys(&zout_buffer[0]); -+ TxIntrSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | -+ IO_STATE(USB_SB_command, tt, zout) | -+ IO_STATE(USB_SB_command, full, yes) | -+ IO_STATE(USB_SB_command, eot, yes) | -+ IO_STATE(USB_SB_command, eol, yes)); -+ -+ for (i = 0; i < (MAX_INTR_INTERVAL - 1); i++) { -+ CHECK_ALIGN(&TxIntrEPList[i]); -+ TxIntrEPList[i].hw_len = 0; -+ TxIntrEPList[i].command = -+ (IO_STATE(USB_EP_command, eof, yes) | -+ IO_STATE(USB_EP_command, enable, yes) | -+ IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -+ TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); -+ TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[i + 1]); -+ } -+ -+ /* Special handling of last descr in list, make list circular */ -+ CHECK_ALIGN(&TxIntrEPList[i]); -+ TxIntrEPList[i].hw_len = 0; -+ TxIntrEPList[i].command = -+ (IO_STATE(USB_EP_command, eof, yes) | -+ IO_STATE(USB_EP_command, eol, yes) | -+ IO_STATE(USB_EP_command, enable, yes) | -+ IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -+ TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); -+ TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[0]); -+ -+ intr_dbg("Initiated Intr EP descriptor list\n"); -+ -+ -+ /* Connect DMA 8 sub-channel 2 to first in list */ -+ *R_DMA_CH8_SUB2_EP = virt_to_phys(&TxIntrEPList[0]); -+} -+ -+static void tc_dma_init_tx_isoc_list(void) { -+ int i; -+ -+ DBFENTER; -+ -+ /* Read comment at zout_buffer declaration for an explanation to this. */ -+ TxIsocSB_zout.sw_len = 1; -+ TxIsocSB_zout.next = 0; -+ TxIsocSB_zout.buf = virt_to_phys(&zout_buffer[0]); -+ TxIsocSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | -+ IO_STATE(USB_SB_command, tt, zout) | -+ IO_STATE(USB_SB_command, full, yes) | -+ IO_STATE(USB_SB_command, eot, yes) | -+ IO_STATE(USB_SB_command, eol, yes)); -+ -+ /* The last isochronous EP descriptor is a dummy. */ -+ for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { -+ CHECK_ALIGN(&TxIsocEPList[i]); -+ TxIsocEPList[i].hw_len = 0; -+ TxIsocEPList[i].command = IO_FIELD(USB_EP_command, epid, i); -+ TxIsocEPList[i].sub = 0; -+ TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[i + 1]); -+ } -+ -+ CHECK_ALIGN(&TxIsocEPList[i]); -+ TxIsocEPList[i].hw_len = 0; -+ -+ /* Must enable the last EP descr to get eof interrupt. */ -+ TxIsocEPList[i].command = (IO_STATE(USB_EP_command, enable, yes) | -+ IO_STATE(USB_EP_command, eof, yes) | -+ IO_STATE(USB_EP_command, eol, yes) | -+ IO_FIELD(USB_EP_command, epid, INVALID_EPID)); -+ TxIsocEPList[i].sub = virt_to_phys(&TxIsocSB_zout); -+ TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[0]); -+ -+ *R_DMA_CH8_SUB3_EP = virt_to_phys(&TxIsocEPList[0]); -+ *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -+} -+ -+static int tc_dma_init(struct usb_hcd *hcd) { -+ tc_dma_init_rx_list(); -+ tc_dma_init_tx_bulk_list(); -+ tc_dma_init_tx_ctrl_list(); -+ tc_dma_init_tx_intr_list(); -+ tc_dma_init_tx_isoc_list(); -+ -+ if (cris_request_dma(USB_TX_DMA_NBR, -+ "ETRAX 100LX built-in USB (Tx)", -+ DMA_VERBOSE_ON_ERROR, -+ dma_usb)) { -+ err("Could not allocate DMA ch 8 for USB"); -+ return -EBUSY; -+ } -+ -+ if (cris_request_dma(USB_RX_DMA_NBR, -+ "ETRAX 100LX built-in USB (Rx)", -+ DMA_VERBOSE_ON_ERROR, -+ dma_usb)) { -+ err("Could not allocate DMA ch 9 for USB"); -+ return -EBUSY; -+ } -+ -+ *R_IRQ_MASK2_SET = -+ /* Note that these interrupts are not used. */ -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub0_descr, set) | -+ /* Sub channel 1 (ctrl) descr. interrupts are used. */ -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub1_descr, set) | -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub2_descr, set) | -+ /* Sub channel 3 (isoc) descr. interrupts are used. */ -+ IO_STATE(R_IRQ_MASK2_SET, dma8_sub3_descr, set); -+ -+ /* Note that the dma9_descr interrupt is not used. */ -+ *R_IRQ_MASK2_SET = -+ IO_STATE(R_IRQ_MASK2_SET, dma9_eop, set) | -+ IO_STATE(R_IRQ_MASK2_SET, dma9_descr, set); -+ -+ if (request_irq(ETRAX_USB_RX_IRQ, tc_dma_rx_interrupt, 0, -+ "ETRAX 100LX built-in USB (Rx)", hcd)) { -+ err("Could not allocate IRQ %d for USB", ETRAX_USB_RX_IRQ); -+ return -EBUSY; -+ } -+ -+ if (request_irq(ETRAX_USB_TX_IRQ, tc_dma_tx_interrupt, 0, -+ "ETRAX 100LX built-in USB (Tx)", hcd)) { -+ err("Could not allocate IRQ %d for USB", ETRAX_USB_TX_IRQ); -+ return -EBUSY; -+ } -+ -+ return 0; -+} -+ -+static void tc_dma_destroy(void) { -+ free_irq(ETRAX_USB_RX_IRQ, NULL); -+ free_irq(ETRAX_USB_TX_IRQ, NULL); -+ -+ cris_free_dma(USB_TX_DMA_NBR, "ETRAX 100LX built-in USB (Tx)"); -+ cris_free_dma(USB_RX_DMA_NBR, "ETRAX 100LX built-in USB (Rx)"); -+ -+} -+ -+static void tc_dma_link_intr_urb(struct urb *urb); -+ -+/* Handle processing of Bulk, Ctrl and Intr queues */ -+static void tc_dma_process_queue(int epid) { -+ struct urb *urb; -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ unsigned long flags; -+ char toggle; -+ -+ if(epid_state[epid].disabled) { -+ /* Don't process any URBs on a disabled endpoint */ -+ return; -+ } -+ -+ /* Do not disturb us while fiddling with EPs and epids */ -+ local_irq_save(flags); -+ -+ /* For bulk, Ctrl and Intr can we only have one URB active at a time for -+ a specific EP. */ -+ if(activeUrbList[epid] != NULL) { -+ /* An URB is already active on EP, skip checking queue */ -+ local_irq_restore(flags); -+ return; -+ } -+ -+ urb = urb_list_first(epid); -+ if(urb == NULL) { -+ /* No URB waiting in EP queue. Nothing do to */ -+ local_irq_restore(flags); -+ return; -+ } -+ -+ urb_priv = urb->hcpriv; -+ ASSERT(urb_priv != NULL); -+ ASSERT(urb_priv->urb_state == NOT_STARTED); -+ ASSERT(!usb_pipeisoc(urb->pipe)); -+ -+ /* Remove this URB from the queue and move it to active */ -+ activeUrbList[epid] = urb; -+ urb_list_del(urb, epid); -+ -+ urb_priv->urb_state = STARTED; -+ -+ /* Reset error counters (regardless of which direction this traffic is). */ -+ etrax_epid_clear_error(epid); -+ -+ /* Special handling of Intr EP lists */ -+ if(usb_pipeint(urb->pipe)) { -+ tc_dma_link_intr_urb(urb); -+ local_irq_restore(flags); -+ return; -+ } -+ -+ /* Software must preset the toggle bits for Bulk and Ctrl */ -+ if(usb_pipecontrol(urb->pipe)) { -+ /* Toggle bits are initialized only during setup transaction in a -+ CTRL transfer */ -+ etrax_epid_set_toggle(epid, 0, 0); -+ etrax_epid_set_toggle(epid, 1, 0); -+ } else { -+ toggle = usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), -+ usb_pipeout(urb->pipe)); -+ etrax_epid_set_toggle(epid, usb_pipeout(urb->pipe), toggle); -+ } -+ -+ tc_dbg("Added SBs from (URB:0x%x %s %s) to epid %d: %s\n", -+ (unsigned int)urb, str_dir(urb->pipe), str_type(urb->pipe), epid, -+ sblist_to_str(urb_priv->first_sb)); -+ -+ /* We start the DMA sub channel without checking if it's running or not, -+ because: -+ 1) If it's already running, issuing the start command is a nop. -+ 2) We avoid a test-and-set race condition. */ -+ switch(usb_pipetype(urb->pipe)) { -+ case PIPE_BULK: -+ /* Assert that the EP descriptor is disabled. */ -+ ASSERT(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable))); -+ -+ /* Set up and enable the EP descriptor. */ -+ TxBulkEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ TxBulkEPList[epid].hw_len = 0; -+ TxBulkEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ -+ /* Check if the dummy list is already with us (if several urbs were queued). */ -+ if (usb_pipein(urb->pipe) && (TxBulkEPList[epid].next != virt_to_phys(&TxBulkDummyEPList[epid][0]))) { -+ tc_dbg("Inviting dummy list to the party for urb 0x%lx, epid %d", -+ (unsigned long)urb, epid); -+ -+ /* We don't need to check if the DMA is at this EP or not before changing the -+ next pointer, since we will do it in one 32-bit write (EP descriptors are -+ 32-bit aligned). */ -+ TxBulkEPList[epid].next = virt_to_phys(&TxBulkDummyEPList[epid][0]); -+ } -+ -+ restart_dma8_sub0(); -+ -+ /* Update/restart the bulk start timer since we just started the channel.*/ -+ mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); -+ /* Update/restart the bulk eot timer since we just inserted traffic. */ -+ mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -+ break; -+ case PIPE_CONTROL: -+ /* Assert that the EP descriptor is disabled. */ -+ ASSERT(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable))); -+ -+ /* Set up and enable the EP descriptor. */ -+ TxCtrlEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ TxCtrlEPList[epid].hw_len = 0; -+ TxCtrlEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ -+ *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start); -+ break; -+ } -+ local_irq_restore(flags); -+} -+ -+static void tc_dma_link_intr_urb(struct urb *urb) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ volatile struct USB_EP_Desc *tmp_ep; -+ struct USB_EP_Desc *ep_desc; -+ int i = 0, epid; -+ int pool_idx = 0; -+ -+ ASSERT(urb_priv != NULL); -+ epid = urb_priv->epid; -+ ASSERT(urb_priv->interval > 0); -+ ASSERT(urb_priv->intr_ep_pool_length > 0); -+ -+ tmp_ep = &TxIntrEPList[0]; -+ -+ /* Only insert one EP descriptor in list for Out Intr URBs. -+ We can only handle Out Intr with interval of 128ms because -+ it's not possible to insert several Out Intr EPs because they -+ are not consumed by the DMA. */ -+ if(usb_pipeout(urb->pipe)) { -+ ep_desc = urb_priv->intr_ep_pool[0]; -+ ASSERT(ep_desc); -+ ep_desc->next = tmp_ep->next; -+ tmp_ep->next = virt_to_phys(ep_desc); -+ i++; -+ } else { -+ /* Loop through Intr EP descriptor list and insert EP for URB at -+ specified interval */ -+ do { -+ /* Each EP descriptor with eof flag sat signals a new frame */ -+ if (tmp_ep->command & IO_MASK(USB_EP_command, eof)) { -+ /* Insert a EP from URBs EP pool at correct interval */ -+ if ((i % urb_priv->interval) == 0) { -+ ep_desc = urb_priv->intr_ep_pool[pool_idx]; -+ ASSERT(ep_desc); -+ ep_desc->next = tmp_ep->next; -+ tmp_ep->next = virt_to_phys(ep_desc); -+ pool_idx++; -+ ASSERT(pool_idx <= urb_priv->intr_ep_pool_length); -+ } -+ i++; -+ } -+ tmp_ep = (struct USB_EP_Desc *)phys_to_virt(tmp_ep->next); -+ } while(tmp_ep != &TxIntrEPList[0]); -+ } -+ -+ intr_dbg("Added SBs to intr epid %d: %s interval:%d (%d EP)\n", epid, -+ sblist_to_str(urb_priv->first_sb), urb_priv->interval, pool_idx); -+ -+ /* We start the DMA sub channel without checking if it's running or not, -+ because: -+ 1) If it's already running, issuing the start command is a nop. -+ 2) We avoid a test-and-set race condition. */ -+ *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start); -+} -+ -+static void tc_dma_process_isoc_urb(struct urb *urb) { -+ unsigned long flags; -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ int epid; -+ -+ /* Do not disturb us while fiddling with EPs and epids */ -+ local_irq_save(flags); -+ -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->first_sb); -+ epid = urb_priv->epid; -+ -+ if(activeUrbList[epid] == NULL) { -+ /* EP is idle, so make this URB active */ -+ activeUrbList[epid] = urb; -+ urb_list_del(urb, epid); -+ ASSERT(TxIsocEPList[epid].sub == 0); -+ ASSERT(!(TxIsocEPList[epid].command & -+ IO_STATE(USB_EP_command, enable, yes))); -+ -+ /* Differentiate between In and Out Isoc. Because In SBs are not consumed*/ -+ if(usb_pipein(urb->pipe)) { -+ /* Each EP for In Isoc will have only one SB descriptor, setup when -+ submitting the first active urb. We do it here by copying from URBs -+ pre-allocated SB. */ -+ memcpy((void *)&(TxIsocSBList[epid]), urb_priv->first_sb, -+ sizeof(TxIsocSBList[epid])); -+ TxIsocEPList[epid].hw_len = 0; -+ TxIsocEPList[epid].sub = virt_to_phys(&(TxIsocSBList[epid])); -+ } else { -+ /* For Out Isoc we attach the pre-allocated list of SBs for the URB */ -+ TxIsocEPList[epid].hw_len = 0; -+ TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ -+ isoc_dbg("Attached first URB:0x%x[%d] to epid:%d first_sb:0x%x" -+ " last_sb::0x%x\n", -+ (unsigned int)urb, urb_priv->urb_num, epid, -+ (unsigned int)(urb_priv->first_sb), -+ (unsigned int)(urb_priv->last_sb)); -+ } -+ -+ if (urb->transfer_flags & URB_ISO_ASAP) { -+ /* The isoc transfer should be started as soon as possible. The -+ start_frame field is a return value if URB_ISO_ASAP was set. Comparing -+ R_USB_FM_NUMBER with a USB Chief trace shows that the first isoc IN -+ token is sent 2 frames later. I'm not sure how this affects usage of -+ the start_frame field by the device driver, or how it affects things -+ when USB_ISO_ASAP is not set, so therefore there's no compensation for -+ the 2 frame "lag" here. */ -+ urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); -+ TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); -+ urb_priv->urb_state = STARTED; -+ isoc_dbg("URB_ISO_ASAP set, urb->start_frame set to %d\n", -+ urb->start_frame); -+ } else { -+ /* Not started yet. */ -+ urb_priv->urb_state = NOT_STARTED; -+ isoc_warn("urb_priv->urb_state set to NOT_STARTED for URB:0x%x\n", -+ (unsigned int)urb); -+ } -+ -+ } else { -+ /* An URB is already active on the EP. Leave URB in queue and let -+ finish_isoc_urb process it after current active URB */ -+ ASSERT(TxIsocEPList[epid].sub != 0); -+ -+ if(usb_pipein(urb->pipe)) { -+ /* Because there already is a active In URB on this epid we do nothing -+ and the finish_isoc_urb() function will handle switching to next URB*/ -+ -+ } else { /* For Out Isoc, insert new URBs traffic last in SB-list. */ -+ struct USB_SB_Desc *temp_sb_desc; -+ -+ /* Set state STARTED to all Out Isoc URBs added to SB list because we -+ don't know how many of them that are finished before descr interrupt*/ -+ urb_priv->urb_state = STARTED; -+ -+ /* Find end of current SB list by looking for SB with eol flag sat */ -+ temp_sb_desc = phys_to_virt(TxIsocEPList[epid].sub); -+ while ((temp_sb_desc->command & IO_MASK(USB_SB_command, eol)) != -+ IO_STATE(USB_SB_command, eol, yes)) { -+ ASSERT(temp_sb_desc->next); -+ temp_sb_desc = phys_to_virt(temp_sb_desc->next); -+ } -+ -+ isoc_dbg("Appended URB:0x%x[%d] (first:0x%x last:0x%x) to epid:%d" -+ " sub:0x%x eol:0x%x\n", -+ (unsigned int)urb, urb_priv->urb_num, -+ (unsigned int)(urb_priv->first_sb), -+ (unsigned int)(urb_priv->last_sb), epid, -+ (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), -+ (unsigned int)temp_sb_desc); -+ -+ /* Next pointer must be set before eol is removed. */ -+ temp_sb_desc->next = virt_to_phys(urb_priv->first_sb); -+ /* Clear the previous end of list flag since there is a new in the -+ added SB descriptor list. */ -+ temp_sb_desc->command &= ~IO_MASK(USB_SB_command, eol); -+ -+ if (!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { -+ __u32 epid_data; -+ /* 8.8.5 in Designer's Reference says we should check for and correct -+ any errors in the EP here. That should not be necessary if -+ epid_attn is handled correctly, so we assume all is ok. */ -+ epid_data = etrax_epid_iso_get(epid); -+ if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) != -+ IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ isoc_err("Disabled Isoc EP with error:%d on epid:%d when appending" -+ " URB:0x%x[%d]\n", -+ IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data), epid, -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ -+ /* The SB list was exhausted. */ -+ if (virt_to_phys(urb_priv->last_sb) != TxIsocEPList[epid].sub) { -+ /* The new sublist did not get processed before the EP was -+ disabled. Setup the EP again. */ -+ -+ if(virt_to_phys(temp_sb_desc) == TxIsocEPList[epid].sub) { -+ isoc_dbg("EP for epid:%d stoped at SB:0x%x before newly inserted" -+ ", restarting from this URBs SB:0x%x\n", -+ epid, (unsigned int)temp_sb_desc, -+ (unsigned int)(urb_priv->first_sb)); -+ TxIsocEPList[epid].hw_len = 0; -+ TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); -+ urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); -+ /* Enable the EP again so data gets processed this time */ -+ TxIsocEPList[epid].command |= -+ IO_STATE(USB_EP_command, enable, yes); -+ -+ } else { -+ /* The EP has been disabled but not at end this URB (god knows -+ where). This should generate an epid_attn so we should not be -+ here */ -+ isoc_warn("EP was disabled on sb:0x%x before SB list for" -+ " URB:0x%x[%d] got processed\n", -+ (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ } else { -+ /* This might happend if we are slow on this function and isn't -+ an error. */ -+ isoc_dbg("EP was disabled and finished with SBs from appended" -+ " URB:0x%x[%d]\n", (unsigned int)urb, urb_priv->urb_num); -+ } -+ } -+ } -+ } -+ -+ /* Start the DMA sub channel */ -+ *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -+ -+ local_irq_restore(flags); -+} -+ -+static void tc_dma_unlink_intr_urb(struct urb *urb) { -+ struct crisv10_urb_priv *urb_priv = urb->hcpriv; -+ volatile struct USB_EP_Desc *first_ep; /* First EP in the list. */ -+ volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ -+ volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ -+ volatile struct USB_EP_Desc *unlink_ep; /* The one we should remove from -+ the list. */ -+ int count = 0; -+ volatile int timeout = 10000; -+ int epid; -+ -+ /* Read 8.8.4 in Designer's Reference, "Removing an EP Descriptor from the -+ List". */ -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->intr_ep_pool_length > 0); -+ epid = urb_priv->epid; -+ -+ /* First disable all Intr EPs belonging to epid for this URB */ -+ first_ep = &TxIntrEPList[0]; -+ curr_ep = first_ep; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -+ /* Disable EP */ -+ next_ep->command &= ~IO_MASK(USB_EP_command, enable); -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != first_ep); -+ -+ -+ /* Now unlink all EPs belonging to this epid from Descr list */ -+ first_ep = &TxIntrEPList[0]; -+ curr_ep = first_ep; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { -+ /* This is the one we should unlink. */ -+ unlink_ep = next_ep; -+ -+ /* Actually unlink the EP from the DMA list. */ -+ curr_ep->next = unlink_ep->next; -+ -+ /* Wait until the DMA is no longer at this descriptor. */ -+ while((*R_DMA_CH8_SUB2_EP == virt_to_phys(unlink_ep)) && -+ (timeout-- > 0)); -+ if(timeout == 0) { -+ warn("Timeout while waiting for DMA-TX-Intr to leave unlink EP\n"); -+ } -+ -+ count++; -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != first_ep); -+ -+ if(count != urb_priv->intr_ep_pool_length) { -+ intr_warn("Unlinked %d of %d Intr EPs for URB:0x%x[%d]\n", count, -+ urb_priv->intr_ep_pool_length, (unsigned int)urb, -+ urb_priv->urb_num); -+ } else { -+ intr_dbg("Unlinked %d of %d interrupt EPs for URB:0x%x\n", count, -+ urb_priv->intr_ep_pool_length, (unsigned int)urb); -+ } -+} -+ -+static void check_finished_bulk_tx_epids(struct usb_hcd *hcd, -+ int timer) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ __u32 epid_data; -+ -+ /* Protect TxEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ /* A finished EP descriptor is disabled and has a valid sub pointer */ -+ if (!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) && -+ (TxBulkEPList[epid].sub != 0)) { -+ -+ /* Get the active URB for this epid */ -+ urb = activeUrbList[epid]; -+ /* Sanity checks */ -+ ASSERT(urb); -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ /* Only handle finished out Bulk EPs here, -+ and let RX interrupt take care of the rest */ -+ if(!epid_out_traffic(epid)) { -+ continue; -+ } -+ -+ if(timer) { -+ tc_warn("Found finished %s Bulk epid:%d URB:0x%x[%d] from timeout\n", -+ epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb, -+ urb_priv->urb_num); -+ } else { -+ tc_dbg("Found finished %s Bulk epid:%d URB:0x%x[%d] from interrupt\n", -+ epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb, -+ urb_priv->urb_num); -+ } -+ -+ if(urb_priv->urb_state == UNLINK) { -+ /* This Bulk URB is requested to be unlinked, that means that the EP -+ has been disabled and we might not have sent all data */ -+ tc_finish_urb(hcd, urb, urb->status); -+ continue; -+ } -+ -+ ASSERT(urb_priv->urb_state == STARTED); -+ if (phys_to_virt(TxBulkEPList[epid].sub) != urb_priv->last_sb) { -+ tc_err("Endpoint got disabled before reaching last sb\n"); -+ } -+ -+ epid_data = etrax_epid_get(epid); -+ if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) == -+ IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ /* This means that the endpoint has no error, is disabled -+ and had inserted traffic, i.e. transfer successfully completed. */ -+ tc_finish_urb(hcd, urb, 0); -+ } else { -+ /* Shouldn't happen. We expect errors to be caught by epid -+ attention. */ -+ tc_err("Found disabled bulk EP desc (epid:%d error:%d)\n", -+ epid, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data)); -+ } -+ } else { -+ tc_dbg("Ignoring In Bulk epid:%d, let RX interrupt handle it\n", epid); -+ } -+ } -+ -+ local_irq_restore(flags); -+} -+ -+static void check_finished_ctrl_tx_epids(struct usb_hcd *hcd) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ __u32 epid_data; -+ -+ /* Protect TxEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if(epid == DUMMY_EPID) -+ continue; -+ -+ /* A finished EP descriptor is disabled and has a valid sub pointer */ -+ if (!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) && -+ (TxCtrlEPList[epid].sub != 0)) { -+ -+ /* Get the active URB for this epid */ -+ urb = activeUrbList[epid]; -+ -+ if(urb == NULL) { -+ tc_warn("Found finished Ctrl epid:%d with no active URB\n", epid); -+ continue; -+ } -+ -+ /* Sanity checks */ -+ ASSERT(usb_pipein(urb->pipe)); -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ if (phys_to_virt(TxCtrlEPList[epid].sub) != urb_priv->last_sb) { -+ tc_err("Endpoint got disabled before reaching last sb\n"); -+ } -+ -+ epid_data = etrax_epid_get(epid); -+ if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) == -+ IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { -+ /* This means that the endpoint has no error, is disabled -+ and had inserted traffic, i.e. transfer successfully completed. */ -+ -+ /* Check if RX-interrupt for In Ctrl has been processed before -+ finishing the URB */ -+ if(urb_priv->ctrl_rx_done) { -+ tc_dbg("Finishing In Ctrl URB:0x%x[%d] in tx_interrupt\n", -+ (unsigned int)urb, urb_priv->urb_num); -+ tc_finish_urb(hcd, urb, 0); -+ } else { -+ /* If we get zout descriptor interrupt before RX was done for a -+ In Ctrl transfer, then we flag that and it will be finished -+ in the RX-Interrupt */ -+ urb_priv->ctrl_zout_done = 1; -+ tc_dbg("Got zout descr interrupt before RX interrupt\n"); -+ } -+ } else { -+ /* Shouldn't happen. We expect errors to be caught by epid -+ attention. */ -+ tc_err("Found disabled Ctrl EP desc (epid:%d URB:0x%x[%d]) error_code:%d\n", epid, (unsigned int)urb, urb_priv->urb_num, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data)); -+ __dump_ep_desc(&(TxCtrlEPList[epid])); -+ __dump_ept_data(epid); -+ } -+ } -+ } -+ local_irq_restore(flags); -+} -+ -+/* This function goes through all epids that are setup for Out Isoc transfers -+ and marks (isoc_out_done) all queued URBs that the DMA has finished -+ transfer for. -+ No URB completetion is done here to make interrupt routine return quickly. -+ URBs are completed later with help of complete_isoc_bottom_half() that -+ becomes schedules when this functions is finished. */ -+static void check_finished_isoc_tx_epids(void) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ struct USB_SB_Desc* sb_desc; -+ int epid_done; -+ -+ /* Protect TxIsocEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if (TxIsocEPList[epid].sub == 0 || epid == INVALID_EPID || -+ !epid_out_traffic(epid)) { -+ /* Nothing here to see. */ -+ continue; -+ } -+ ASSERT(epid_inuse(epid)); -+ ASSERT(epid_isoc(epid)); -+ -+ sb_desc = phys_to_virt(TxIsocEPList[epid].sub); -+ /* Find the last descriptor of the currently active URB for this ep. -+ This is the first descriptor in the sub list marked for a descriptor -+ interrupt. */ -+ while (sb_desc && !IO_EXTRACT(USB_SB_command, intr, sb_desc->command)) { -+ sb_desc = sb_desc->next ? phys_to_virt(sb_desc->next) : 0; -+ } -+ ASSERT(sb_desc); -+ -+ isoc_dbg("Descr IRQ checking epid:%d sub:0x%x intr:0x%x\n", -+ epid, (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), -+ (unsigned int)sb_desc); -+ -+ urb = activeUrbList[epid]; -+ if(urb == NULL) { -+ isoc_err("Isoc Descr irq on epid:%d with no active URB\n", epid); -+ continue; -+ } -+ -+ epid_done = 0; -+ while(urb && !epid_done) { -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -+ ASSERT(usb_pipeout(urb->pipe)); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->urb_state == STARTED || -+ urb_priv->urb_state == UNLINK); -+ -+ if (sb_desc != urb_priv->last_sb) { -+ /* This urb has been sent. */ -+ urb_priv->isoc_out_done = 1; -+ -+ } else { /* Found URB that has last_sb as the interrupt reason */ -+ -+ /* Check if EP has been disabled, meaning that all transfers are done*/ -+ if(!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { -+ ASSERT((sb_desc->command & IO_MASK(USB_SB_command, eol)) == -+ IO_STATE(USB_SB_command, eol, yes)); -+ ASSERT(sb_desc->next == 0); -+ urb_priv->isoc_out_done = 1; -+ } else { -+ isoc_dbg("Skipping URB:0x%x[%d] because EP not disabled yet\n", -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ /* Stop looking any further in queue */ -+ epid_done = 1; -+ } -+ -+ if (!epid_done) { -+ if(urb == activeUrbList[epid]) { -+ urb = urb_list_first(epid); -+ } else { -+ urb = urb_list_next(urb, epid); -+ } -+ } -+ } /* END: while(urb && !epid_done) */ -+ } -+ -+ local_irq_restore(flags); -+} -+ -+ -+/* This is where the Out Isoc URBs are realy completed. This function is -+ scheduled from tc_dma_tx_interrupt() when one or more Out Isoc transfers -+ are done. This functions completes all URBs earlier marked with -+ isoc_out_done by fast interrupt routine check_finished_isoc_tx_epids() */ -+ -+static void complete_isoc_bottom_half(void *data) { -+ struct crisv10_isoc_complete_data *comp_data; -+ struct usb_iso_packet_descriptor *packet; -+ struct crisv10_urb_priv * urb_priv; -+ unsigned long flags; -+ struct urb* urb; -+ int epid_done; -+ int epid; -+ int i; -+ -+ comp_data = (struct crisv10_isoc_complete_data*)data; -+ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { -+ if(!epid_inuse(epid) || !epid_isoc(epid) || !epid_out_traffic(epid) || epid == DUMMY_EPID) { -+ /* Only check valid Out Isoc epids */ -+ continue; -+ } -+ -+ isoc_dbg("Isoc bottom-half checking epid:%d, sub:0x%x\n", epid, -+ (unsigned int)phys_to_virt(TxIsocEPList[epid].sub)); -+ -+ /* The descriptor interrupt handler has marked all transmitted Out Isoc -+ URBs with isoc_out_done. Now we traverse all epids and for all that -+ have out Isoc traffic we traverse its URB list and complete the -+ transmitted URBs. */ -+ epid_done = 0; -+ while (!epid_done) { -+ -+ /* Get the active urb (if any) */ -+ urb = activeUrbList[epid]; -+ if (urb == 0) { -+ isoc_dbg("No active URB on epid:%d anymore\n", epid); -+ epid_done = 1; -+ continue; -+ } -+ -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); -+ ASSERT(usb_pipeout(urb->pipe)); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ if (!(urb_priv->isoc_out_done)) { -+ /* We have reached URB that isn't flaged done yet, stop traversing. */ -+ isoc_dbg("Stoped traversing Out Isoc URBs on epid:%d" -+ " before not yet flaged URB:0x%x[%d]\n", -+ epid, (unsigned int)urb, urb_priv->urb_num); -+ epid_done = 1; -+ continue; -+ } -+ -+ /* This urb has been sent. */ -+ isoc_dbg("Found URB:0x%x[%d] that is flaged isoc_out_done\n", -+ (unsigned int)urb, urb_priv->urb_num); -+ -+ /* Set ok on transfered packets for this URB and finish it */ -+ for (i = 0; i < urb->number_of_packets; i++) { -+ packet = &urb->iso_frame_desc[i]; -+ packet->status = 0; -+ packet->actual_length = packet->length; -+ } -+ urb_priv->isoc_packet_counter = urb->number_of_packets; -+ tc_finish_urb(comp_data->hcd, urb, 0); -+ -+ } /* END: while(!epid_done) */ -+ } /* END: for(epid...) */ -+ -+ local_irq_restore(flags); -+ kmem_cache_free(isoc_compl_cache, comp_data); -+} -+ -+ -+static void check_finished_intr_tx_epids(struct usb_hcd *hcd) { -+ unsigned long flags; -+ int epid; -+ struct urb *urb; -+ struct crisv10_urb_priv * urb_priv; -+ volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ -+ volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ -+ -+ /* Protect TxintrEPList */ -+ local_irq_save(flags); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if(!epid_inuse(epid) || !epid_intr(epid) || !epid_out_traffic(epid)) { -+ /* Nothing to see on this epid. Only check valid Out Intr epids */ -+ continue; -+ } -+ -+ urb = activeUrbList[epid]; -+ if(urb == 0) { -+ intr_warn("Found Out Intr epid:%d with no active URB\n", epid); -+ continue; -+ } -+ -+ /* Sanity check. */ -+ ASSERT(usb_pipetype(urb->pipe) == PIPE_INTERRUPT); -+ ASSERT(usb_pipeout(urb->pipe)); -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ -+ /* Go through EPs between first and second sof-EP. It's here Out Intr EPs -+ are inserted.*/ -+ curr_ep = &TxIntrEPList[0]; -+ do { -+ next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); -+ if(next_ep == urb_priv->intr_ep_pool[0]) { -+ /* We found the Out Intr EP for this epid */ -+ -+ /* Disable it so it doesn't get processed again */ -+ next_ep->command &= ~IO_MASK(USB_EP_command, enable); -+ -+ /* Finish the active Out Intr URB with status OK */ -+ tc_finish_urb(hcd, urb, 0); -+ } -+ curr_ep = phys_to_virt(curr_ep->next); -+ } while (curr_ep != &TxIntrEPList[1]); -+ -+ } -+ local_irq_restore(flags); -+} -+ -+/* Interrupt handler for DMA8/IRQ24 with subchannels (called from hardware intr) */ -+static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc) { -+ struct usb_hcd *hcd = (struct usb_hcd*)vhc; -+ ASSERT(hcd); -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub0_descr)) { -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB0_CLR_INTR = IO_STATE(R_DMA_CH8_SUB0_CLR_INTR, clr_descr, do); -+ restart_dma8_sub0(); -+ } -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub1_descr)) { -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB1_CLR_INTR = IO_STATE(R_DMA_CH8_SUB1_CLR_INTR, clr_descr, do); -+ check_finished_ctrl_tx_epids(hcd); -+ } -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub2_descr)) { -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB2_CLR_INTR = IO_STATE(R_DMA_CH8_SUB2_CLR_INTR, clr_descr, do); -+ check_finished_intr_tx_epids(hcd); -+ } -+ -+ if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub3_descr)) { -+ struct crisv10_isoc_complete_data* comp_data; -+ -+ /* Flag done Out Isoc for later completion */ -+ check_finished_isoc_tx_epids(); -+ -+ /* Clear this interrupt */ -+ *R_DMA_CH8_SUB3_CLR_INTR = IO_STATE(R_DMA_CH8_SUB3_CLR_INTR, clr_descr, do); -+ /* Schedule bottom half of Out Isoc completion function. This function -+ finishes the URBs marked with isoc_out_done */ -+ comp_data = (struct crisv10_isoc_complete_data*) -+ kmem_cache_alloc(isoc_compl_cache, SLAB_ATOMIC); -+ ASSERT(comp_data != NULL); -+ comp_data ->hcd = hcd; -+ -+ INIT_WORK(&comp_data->usb_bh, complete_isoc_bottom_half, comp_data); -+ schedule_work(&comp_data->usb_bh); -+ } -+ -+ return IRQ_HANDLED; -+} -+ -+/* Interrupt handler for DMA9/IRQ25 (called from hardware intr) */ -+static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc) { -+ unsigned long flags; -+ struct urb *urb; -+ struct usb_hcd *hcd = (struct usb_hcd*)vhc; -+ struct crisv10_urb_priv *urb_priv; -+ int epid = 0; -+ int real_error; -+ -+ ASSERT(hcd); -+ -+ /* Clear this interrupt. */ -+ *R_DMA_CH9_CLR_INTR = IO_STATE(R_DMA_CH9_CLR_INTR, clr_eop, do); -+ -+ /* Custom clear interrupt for this interrupt */ -+ /* The reason we cli here is that we call the driver's callback functions. */ -+ local_irq_save(flags); -+ -+ /* Note that this while loop assumes that all packets span only -+ one rx descriptor. */ -+ while(myNextRxDesc->status & IO_MASK(USB_IN_status, eop)) { -+ epid = IO_EXTRACT(USB_IN_status, epid, myNextRxDesc->status); -+ /* Get the active URB for this epid */ -+ urb = activeUrbList[epid]; -+ -+ ASSERT(epid_inuse(epid)); -+ if (!urb) { -+ dma_err("No urb for epid %d in rx interrupt\n", epid); -+ goto skip_out; -+ } -+ -+ /* Check if any errors on epid */ -+ real_error = 0; -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, error)) { -+ __u32 r_usb_ept_data; -+ -+ if (usb_pipeisoc(urb->pipe)) { -+ r_usb_ept_data = etrax_epid_iso_get(epid); -+ if((r_usb_ept_data & IO_MASK(R_USB_EPT_DATA_ISO, valid)) && -+ (IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data) == 0) && -+ (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata))) { -+ /* Not an error, just a failure to receive an expected iso -+ in packet in this frame. This is not documented -+ in the designers reference. Continue processing. -+ */ -+ } else real_error = 1; -+ } else real_error = 1; -+ } -+ -+ if(real_error) { -+ dma_err("Error in RX descr on epid:%d for URB 0x%x", -+ epid, (unsigned int)urb); -+ dump_ept_data(epid); -+ dump_in_desc(myNextRxDesc); -+ goto skip_out; -+ } -+ -+ urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; -+ ASSERT(urb_priv); -+ ASSERT(urb_priv->urb_state == STARTED || -+ urb_priv->urb_state == UNLINK); -+ -+ if ((usb_pipetype(urb->pipe) == PIPE_BULK) || -+ (usb_pipetype(urb->pipe) == PIPE_CONTROL) || -+ (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) { -+ -+ /* We get nodata for empty data transactions, and the rx descriptor's -+ hw_len field is not valid in that case. No data to copy in other -+ words. */ -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { -+ /* No data to copy */ -+ } else { -+ /* -+ dma_dbg("Processing RX for URB:0x%x epid:%d (data:%d ofs:%d)\n", -+ (unsigned int)urb, epid, myNextRxDesc->hw_len, -+ urb_priv->rx_offset); -+ */ -+ /* Only copy data if URB isn't flaged to be unlinked*/ -+ if(urb_priv->urb_state != UNLINK) { -+ /* Make sure the data fits in the buffer. */ -+ if(urb_priv->rx_offset + myNextRxDesc->hw_len -+ <= urb->transfer_buffer_length) { -+ -+ /* Copy the data to URBs buffer */ -+ memcpy(urb->transfer_buffer + urb_priv->rx_offset, -+ phys_to_virt(myNextRxDesc->buf), myNextRxDesc->hw_len); -+ urb_priv->rx_offset += myNextRxDesc->hw_len; -+ } else { -+ /* Signal overflow when returning URB */ -+ urb->status = -EOVERFLOW; -+ tc_finish_urb_later(hcd, urb, urb->status); -+ } -+ } -+ } -+ -+ /* Check if it was the last packet in the transfer */ -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, eot)) { -+ /* Special handling for In Ctrl URBs. */ -+ if(usb_pipecontrol(urb->pipe) && usb_pipein(urb->pipe) && -+ !(urb_priv->ctrl_zout_done)) { -+ /* Flag that RX part of Ctrl transfer is done. Because zout descr -+ interrupt hasn't happend yet will the URB be finished in the -+ TX-Interrupt. */ -+ urb_priv->ctrl_rx_done = 1; -+ tc_dbg("Not finishing In Ctrl URB:0x%x from rx_interrupt, waiting" -+ " for zout\n", (unsigned int)urb); -+ } else { -+ tc_finish_urb(hcd, urb, 0); -+ } -+ } -+ } else { /* ISOC RX */ -+ /* -+ isoc_dbg("Processing RX for epid:%d (URB:0x%x) ISOC pipe\n", -+ epid, (unsigned int)urb); -+ */ -+ -+ struct usb_iso_packet_descriptor *packet; -+ -+ if (urb_priv->urb_state == UNLINK) { -+ isoc_warn("Ignoring Isoc Rx data for urb being unlinked.\n"); -+ goto skip_out; -+ } else if (urb_priv->urb_state == NOT_STARTED) { -+ isoc_err("What? Got Rx data for Isoc urb that isn't started?\n"); -+ goto skip_out; -+ } -+ -+ packet = &urb->iso_frame_desc[urb_priv->isoc_packet_counter]; -+ ASSERT(packet); -+ packet->status = 0; -+ -+ if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { -+ /* We get nodata for empty data transactions, and the rx descriptor's -+ hw_len field is not valid in that case. We copy 0 bytes however to -+ stay in synch. */ -+ packet->actual_length = 0; -+ } else { -+ packet->actual_length = myNextRxDesc->hw_len; -+ /* Make sure the data fits in the buffer. */ -+ ASSERT(packet->actual_length <= packet->length); -+ memcpy(urb->transfer_buffer + packet->offset, -+ phys_to_virt(myNextRxDesc->buf), packet->actual_length); -+ if(packet->actual_length > 0) -+ isoc_dbg("Copied %d bytes, packet %d for URB:0x%x[%d]\n", -+ packet->actual_length, urb_priv->isoc_packet_counter, -+ (unsigned int)urb, urb_priv->urb_num); -+ } -+ -+ /* Increment the packet counter. */ -+ urb_priv->isoc_packet_counter++; -+ -+ /* Note that we don't care about the eot field in the rx descriptor's -+ status. It will always be set for isoc traffic. */ -+ if (urb->number_of_packets == urb_priv->isoc_packet_counter) { -+ /* Complete the urb with status OK. */ -+ tc_finish_urb(hcd, urb, 0); -+ } -+ } -+ -+ skip_out: -+ myNextRxDesc->status = 0; -+ myNextRxDesc->command |= IO_MASK(USB_IN_command, eol); -+ myLastRxDesc->command &= ~IO_MASK(USB_IN_command, eol); -+ myLastRxDesc = myNextRxDesc; -+ myNextRxDesc = phys_to_virt(myNextRxDesc->next); -+ flush_etrax_cache(); -+ *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, restart); -+ } -+ -+ local_irq_restore(flags); -+ -+ return IRQ_HANDLED; -+} -+ -+static void tc_bulk_start_timer_func(unsigned long dummy) { -+ /* We might enable an EP descriptor behind the current DMA position when -+ it's about to decide that there are no more bulk traffic and it should -+ stop the bulk channel. -+ Therefore we periodically check if the bulk channel is stopped and there -+ is an enabled bulk EP descriptor, in which case we start the bulk -+ channel. */ -+ -+ if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) { -+ int epid; -+ -+ timer_dbg("bulk_start_timer: Bulk DMA channel not running.\n"); -+ -+ for (epid = 0; epid < NBR_OF_EPIDS; epid++) { -+ if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { -+ timer_warn("Found enabled EP for epid %d, starting bulk channel.\n", -+ epid); -+ restart_dma8_sub0(); -+ -+ /* Restart the bulk eot timer since we just started the bulk channel.*/ -+ mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); -+ -+ /* No need to search any further. */ -+ break; -+ } -+ } -+ } else { -+ timer_dbg("bulk_start_timer: Bulk DMA channel running.\n"); -+ } -+} -+ -+static void tc_bulk_eot_timer_func(unsigned long dummy) { -+ struct usb_hcd *hcd = (struct usb_hcd*)dummy; -+ ASSERT(hcd); -+ /* Because of a race condition in the top half, we might miss a bulk eot. -+ This timer "simulates" a bulk eot if we don't get one for a while, -+ hopefully correcting the situation. */ -+ timer_dbg("bulk_eot_timer timed out.\n"); -+ check_finished_bulk_tx_epids(hcd, 1); -+} -+ -+ -+/*************************************************************/ -+/*************************************************************/ -+/* Device driver block */ -+/*************************************************************/ -+/*************************************************************/ -+ -+/* Forward declarations for device driver functions */ -+static int devdrv_hcd_probe(struct device *); -+static int devdrv_hcd_remove(struct device *); -+#ifdef CONFIG_PM -+static int devdrv_hcd_suspend(struct device *, u32, u32); -+static int devdrv_hcd_resume(struct device *, u32); -+#endif /* CONFIG_PM */ -+ -+/* the device */ -+static struct platform_device *devdrv_hc_platform_device; -+ -+/* device driver interface */ -+static struct device_driver devdrv_hc_device_driver = { -+ .name = (char *) hc_name, -+ .bus = &platform_bus_type, -+ -+ .probe = devdrv_hcd_probe, -+ .remove = devdrv_hcd_remove, -+ -+#ifdef CONFIG_PM -+ .suspend = devdrv_hcd_suspend, -+ .resume = devdrv_hcd_resume, -+#endif /* CONFIG_PM */ -+}; -+ -+/* initialize the host controller and driver */ -+static int __init_or_module devdrv_hcd_probe(struct device *dev) -+{ -+ struct usb_hcd *hcd; -+ struct crisv10_hcd *crisv10_hcd; -+ int retval; -+ -+ /* Check DMA burst length */ -+ if(IO_EXTRACT(R_BUS_CONFIG, dma_burst, *R_BUS_CONFIG) != -+ IO_STATE(R_BUS_CONFIG, dma_burst, burst32)) { -+ devdrv_err("Invalid DMA burst length in Etrax 100LX," -+ " needs to be 32\n"); -+ return -EPERM; -+ } -+ -+ hcd = usb_create_hcd(&crisv10_hc_driver, dev, dev->bus_id); -+ if (!hcd) -+ return -ENOMEM; -+ -+ crisv10_hcd = hcd_to_crisv10_hcd(hcd); -+ spin_lock_init(&crisv10_hcd->lock); -+ crisv10_hcd->num_ports = num_ports(); -+ crisv10_hcd->running = 0; -+ -+ dev_set_drvdata(dev, crisv10_hcd); -+ -+ devdrv_dbg("ETRAX USB IRQs HC:%d RX:%d TX:%d\n", ETRAX_USB_HC_IRQ, -+ ETRAX_USB_RX_IRQ, ETRAX_USB_TX_IRQ); -+ -+ /* Print out chip version read from registers */ -+ int rev_maj = *R_USB_REVISION & IO_MASK(R_USB_REVISION, major); -+ int rev_min = *R_USB_REVISION & IO_MASK(R_USB_REVISION, minor); -+ if(rev_min == 0) { -+ devdrv_info("Etrax 100LX USB Revision %d v1,2\n", rev_maj); -+ } else { -+ devdrv_info("Etrax 100LX USB Revision %d v%d\n", rev_maj, rev_min); -+ } -+ -+ devdrv_info("Bulk timer interval, start:%d eot:%d\n", -+ BULK_START_TIMER_INTERVAL, -+ BULK_EOT_TIMER_INTERVAL); -+ -+ -+ /* Init root hub data structures */ -+ if(rh_init()) { -+ devdrv_err("Failed init data for Root Hub\n"); -+ retval = -ENOMEM; -+ } -+ -+ if(port_in_use(0)) { -+ if (cris_request_io_interface(if_usb_1, "ETRAX100LX USB-HCD")) { -+ printk(KERN_CRIT "usb-host: request IO interface usb1 failed"); -+ retval = -EBUSY; -+ goto out; -+ } -+ devdrv_info("Claimed interface for USB physical port 1\n"); -+ } -+ if(port_in_use(1)) { -+ if (cris_request_io_interface(if_usb_2, "ETRAX100LX USB-HCD")) { -+ /* Free first interface if second failed to be claimed */ -+ if(port_in_use(0)) { -+ cris_free_io_interface(if_usb_1); -+ } -+ printk(KERN_CRIT "usb-host: request IO interface usb2 failed"); -+ retval = -EBUSY; -+ goto out; -+ } -+ devdrv_info("Claimed interface for USB physical port 2\n"); -+ } -+ -+ /* Init transfer controller structs and locks */ -+ if((retval = tc_init(hcd)) != 0) { -+ goto out; -+ } -+ -+ /* Attach interrupt functions for DMA and init DMA controller */ -+ if((retval = tc_dma_init(hcd)) != 0) { -+ goto out; -+ } -+ -+ /* Attach the top IRQ handler for USB controller interrupts */ -+ if (request_irq(ETRAX_USB_HC_IRQ, crisv10_hcd_top_irq, 0, -+ "ETRAX 100LX built-in USB (HC)", hcd)) { -+ err("Could not allocate IRQ %d for USB", ETRAX_USB_HC_IRQ); -+ retval = -EBUSY; -+ goto out; -+ } -+ -+ /* iso_eof is only enabled when isoc traffic is running. */ -+ *R_USB_IRQ_MASK_SET = -+ /* IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set) | */ -+ IO_STATE(R_USB_IRQ_MASK_SET, bulk_eot, set) | -+ IO_STATE(R_USB_IRQ_MASK_SET, epid_attn, set) | -+ IO_STATE(R_USB_IRQ_MASK_SET, port_status, set) | -+ IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set); -+ -+ -+ crisv10_ready_wait(); -+ /* Reset the USB interface. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); -+ -+ /* Designer's Reference, p. 8 - 10 says we should Initate R_USB_FM_PSTART to -+ 0x2A30 (10800), to guarantee that control traffic gets 10% of the -+ bandwidth, and periodic transfer may allocate the rest (90%). -+ This doesn't work though. -+ The value 11960 is chosen to be just after the SOF token, with a couple -+ of bit times extra for possible bit stuffing. */ -+ *R_USB_FM_PSTART = IO_FIELD(R_USB_FM_PSTART, value, 11960); -+ -+ crisv10_ready_wait(); -+ /* Configure the USB interface as a host controller. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_config); -+ -+ -+ /* Check so controller not busy before enabling ports */ -+ crisv10_ready_wait(); -+ -+ /* Enable selected USB ports */ -+ if(port_in_use(0)) { -+ *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no); -+ } else { -+ *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); -+ } -+ if(port_in_use(1)) { -+ *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no); -+ } else { -+ *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes); -+ } -+ -+ crisv10_ready_wait(); -+ /* Start processing of USB traffic. */ -+ *R_USB_COMMAND = -+ IO_STATE(R_USB_COMMAND, port_sel, nop) | -+ IO_STATE(R_USB_COMMAND, port_cmd, reset) | -+ IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); -+ -+ /* Do not continue probing initialization before USB interface is done */ -+ crisv10_ready_wait(); -+ -+ /* Register our Host Controller to USB Core -+ * Finish the remaining parts of generic HCD initialization: allocate the -+ * buffers of consistent memory, register the bus -+ * and call the driver's reset() and start() routines. */ -+ retval = usb_add_hcd(hcd, ETRAX_USB_HC_IRQ, IRQF_DISABLED); -+ if (retval != 0) { -+ devdrv_err("Failed registering HCD driver\n"); -+ goto out; -+ } -+ -+ return 0; -+ -+ out: -+ devdrv_hcd_remove(dev); -+ return retval; -+} -+ -+ -+/* cleanup after the host controller and driver */ -+static int __init_or_module devdrv_hcd_remove(struct device *dev) -+{ -+ struct crisv10_hcd *crisv10_hcd = dev_get_drvdata(dev); -+ struct usb_hcd *hcd; -+ -+ if (!crisv10_hcd) -+ return 0; -+ hcd = crisv10_hcd_to_hcd(crisv10_hcd); -+ -+ -+ /* Stop USB Controller in Etrax 100LX */ -+ crisv10_hcd_reset(hcd); -+ -+ usb_remove_hcd(hcd); -+ devdrv_dbg("Removed HCD from USB Core\n"); -+ -+ /* Free USB Controller IRQ */ -+ free_irq(ETRAX_USB_HC_IRQ, NULL); -+ -+ /* Free resources */ -+ tc_dma_destroy(); -+ tc_destroy(); -+ -+ -+ if(port_in_use(0)) { -+ cris_free_io_interface(if_usb_1); -+ } -+ if(port_in_use(1)) { -+ cris_free_io_interface(if_usb_2); -+ } -+ -+ devdrv_dbg("Freed all claimed resources\n"); -+ -+ return 0; -+} -+ -+ -+#ifdef CONFIG_PM -+ -+static int devdrv_hcd_suspend(struct usb_hcd *hcd, u32 state, u32 level) -+{ -+ return 0; /* no-op for now */ -+} -+ -+static int devdrv_hcd_resume(struct usb_hcd *hcd, u32 level) -+{ -+ return 0; /* no-op for now */ -+} -+ -+#endif /* CONFIG_PM */ -+ -+ -+ -+/*************************************************************/ -+/*************************************************************/ -+/* Module block */ -+/*************************************************************/ -+/*************************************************************/ -+ -+/* register driver */ -+static int __init module_hcd_init(void) -+{ -+ -+ if (usb_disabled()) -+ return -ENODEV; -+ -+ /* Here we select enabled ports by following defines created from -+ menuconfig */ -+#ifndef CONFIG_ETRAX_USB_HOST_PORT1 -+ ports &= ~(1<<0); -+#endif -+#ifndef CONFIG_ETRAX_USB_HOST_PORT2 -+ ports &= ~(1<<1); -+#endif -+ -+ printk(KERN_INFO "%s version "VERSION" "COPYRIGHT"\n", product_desc); -+ -+ devdrv_hc_platform_device = -+ platform_device_register_simple((char *) hc_name, 0, NULL, 0); -+ -+ if (IS_ERR(devdrv_hc_platform_device)) -+ return PTR_ERR(devdrv_hc_platform_device); -+ return driver_register(&devdrv_hc_device_driver); -+ /* -+ * Note that we do not set the DMA mask for the device, -+ * i.e. we pretend that we will use PIO, since no specific -+ * allocation routines are needed for DMA buffers. This will -+ * cause the HCD buffer allocation routines to fall back to -+ * kmalloc(). -+ */ -+} -+ -+/* unregister driver */ -+static void __exit module_hcd_exit(void) -+{ -+ driver_unregister(&devdrv_hc_device_driver); -+} -+ -+ -+/* Module hooks */ -+module_init(module_hcd_init); -+module_exit(module_hcd_exit); ---- linux-2.6.19.2.orig/drivers/usb/host/hc_crisv10.h 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/usb/host/hc_crisv10.h 1970-01-01 01:00:00.000000000 +0100 -@@ -1,289 +0,0 @@ --#ifndef __LINUX_ETRAX_USB_H --#define __LINUX_ETRAX_USB_H -- --#include <linux/types.h> --#include <linux/list.h> -- --typedef struct USB_IN_Desc { -- volatile __u16 sw_len; -- volatile __u16 command; -- volatile unsigned long next; -- volatile unsigned long buf; -- volatile __u16 hw_len; -- volatile __u16 status; --} USB_IN_Desc_t; -- --typedef struct USB_SB_Desc { -- volatile __u16 sw_len; -- volatile __u16 command; -- volatile unsigned long next; -- volatile unsigned long buf; -- __u32 dummy; --} USB_SB_Desc_t; -- --typedef struct USB_EP_Desc { -- volatile __u16 hw_len; -- volatile __u16 command; -- volatile unsigned long sub; -- volatile unsigned long next; -- __u32 dummy; --} USB_EP_Desc_t; -- --struct virt_root_hub { -- int devnum; -- void *urb; -- void *int_addr; -- int send; -- int interval; -- int numports; -- struct timer_list rh_int_timer; -- volatile __u16 wPortChange_1; -- volatile __u16 wPortChange_2; -- volatile __u16 prev_wPortStatus_1; -- volatile __u16 prev_wPortStatus_2; --}; -- --struct etrax_usb_intr_traffic { -- int sleeping; -- int error; -- struct wait_queue *wq; --}; -- --typedef struct etrax_usb_hc { -- struct usb_bus *bus; -- struct virt_root_hub rh; -- struct etrax_usb_intr_traffic intr; --} etrax_hc_t; -- --typedef enum { -- STARTED, -- NOT_STARTED, -- UNLINK, -- TRANSFER_DONE, -- WAITING_FOR_DESCR_INTR --} etrax_usb_urb_state_t; -- -- -- --typedef struct etrax_usb_urb_priv { -- /* The first_sb field is used for freeing all SB descriptors belonging -- to an urb. The corresponding ep descriptor's sub pointer cannot be -- used for this since the DMA advances the sub pointer as it processes -- the sb list. */ -- USB_SB_Desc_t *first_sb; -- /* The last_sb field referes to the last SB descriptor that belongs to -- this urb. This is important to know so we can free the SB descriptors -- that ranges between first_sb and last_sb. */ -- USB_SB_Desc_t *last_sb; -- -- /* The rx_offset field is used in ctrl and bulk traffic to keep track -- of the offset in the urb's transfer_buffer where incoming data should be -- copied to. */ -- __u32 rx_offset; -- -- /* Counter used in isochronous transfers to keep track of the -- number of packets received/transmitted. */ -- __u32 isoc_packet_counter; -- -- /* This field is used to pass information about the urb's current state between -- the various interrupt handlers (thus marked volatile). */ -- volatile etrax_usb_urb_state_t urb_state; -- -- /* Connection between the submitted urb and ETRAX epid number */ -- __u8 epid; -- -- /* The rx_data_list field is used for periodic traffic, to hold -- received data for later processing in the the complete_urb functions, -- where the data us copied to the urb's transfer_buffer. Basically, we -- use this intermediate storage because we don't know when it's safe to -- reuse the transfer_buffer (FIXME?). */ -- struct list_head rx_data_list; --} etrax_urb_priv_t; -- --/* This struct is for passing data from the top half to the bottom half. */ --typedef struct usb_interrupt_registers --{ -- etrax_hc_t *hc; -- __u32 r_usb_epid_attn; -- __u8 r_usb_status; -- __u16 r_usb_rh_port_status_1; -- __u16 r_usb_rh_port_status_2; -- __u32 r_usb_irq_mask_read; -- __u32 r_usb_fm_number; -- struct work_struct usb_bh; --} usb_interrupt_registers_t; -- --/* This struct is for passing data from the isoc top half to the isoc bottom half. */ --typedef struct usb_isoc_complete_data --{ -- struct urb *urb; -- struct work_struct usb_bh; --} usb_isoc_complete_data_t; -- --/* This struct holds data we get from the rx descriptors for DMA channel 9 -- for periodic traffic (intr and isoc). */ --typedef struct rx_data --{ -- void *data; -- int length; -- struct list_head list; --} rx_data_t; -- --typedef struct urb_entry --{ -- struct urb *urb; -- struct list_head list; --} urb_entry_t; -- --/* --------------------------------------------------------------------------- -- Virtual Root HUB -- ------------------------------------------------------------------------- */ --/* destination of request */ --#define RH_INTERFACE 0x01 --#define RH_ENDPOINT 0x02 --#define RH_OTHER 0x03 -- --#define RH_CLASS 0x20 --#define RH_VENDOR 0x40 -- --/* Requests: bRequest << 8 | bmRequestType */ --#define RH_GET_STATUS 0x0080 --#define RH_CLEAR_FEATURE 0x0100 --#define RH_SET_FEATURE 0x0300 --#define RH_SET_ADDRESS 0x0500 --#define RH_GET_DESCRIPTOR 0x0680 --#define RH_SET_DESCRIPTOR 0x0700 --#define RH_GET_CONFIGURATION 0x0880 --#define RH_SET_CONFIGURATION 0x0900 --#define RH_GET_STATE 0x0280 --#define RH_GET_INTERFACE 0x0A80 --#define RH_SET_INTERFACE 0x0B00 --#define RH_SYNC_FRAME 0x0C80 --/* Our Vendor Specific Request */ --#define RH_SET_EP 0x2000 -- -- --/* Hub port features */ --#define RH_PORT_CONNECTION 0x00 --#define RH_PORT_ENABLE 0x01 --#define RH_PORT_SUSPEND 0x02 --#define RH_PORT_OVER_CURRENT 0x03 --#define RH_PORT_RESET 0x04 --#define RH_PORT_POWER 0x08 --#define RH_PORT_LOW_SPEED 0x09 --#define RH_C_PORT_CONNECTION 0x10 --#define RH_C_PORT_ENABLE 0x11 --#define RH_C_PORT_SUSPEND 0x12 --#define RH_C_PORT_OVER_CURRENT 0x13 --#define RH_C_PORT_RESET 0x14 -- --/* Hub features */ --#define RH_C_HUB_LOCAL_POWER 0x00 --#define RH_C_HUB_OVER_CURRENT 0x01 -- --#define RH_DEVICE_REMOTE_WAKEUP 0x00 --#define RH_ENDPOINT_STALL 0x01 -- --/* Our Vendor Specific feature */ --#define RH_REMOVE_EP 0x00 -- -- --#define RH_ACK 0x01 --#define RH_REQ_ERR -1 --#define RH_NACK 0x00 -- --/* Field definitions for */ -- --#define USB_IN_command__eol__BITNR 0 /* command macros */ --#define USB_IN_command__eol__WIDTH 1 --#define USB_IN_command__eol__no 0 --#define USB_IN_command__eol__yes 1 -- --#define USB_IN_command__intr__BITNR 3 --#define USB_IN_command__intr__WIDTH 1 --#define USB_IN_command__intr__no 0 --#define USB_IN_command__intr__yes 1 -- --#define USB_IN_status__eop__BITNR 1 /* status macros. */ --#define USB_IN_status__eop__WIDTH 1 --#define USB_IN_status__eop__no 0 --#define USB_IN_status__eop__yes 1 -- --#define USB_IN_status__eot__BITNR 5 --#define USB_IN_status__eot__WIDTH 1 --#define USB_IN_status__eot__no 0 --#define USB_IN_status__eot__yes 1 -- --#define USB_IN_status__error__BITNR 6 --#define USB_IN_status__error__WIDTH 1 --#define USB_IN_status__error__no 0 --#define USB_IN_status__error__yes 1 -- --#define USB_IN_status__nodata__BITNR 7 --#define USB_IN_status__nodata__WIDTH 1 --#define USB_IN_status__nodata__no 0 --#define USB_IN_status__nodata__yes 1 -- --#define USB_IN_status__epid__BITNR 8 --#define USB_IN_status__epid__WIDTH 5 -- --#define USB_EP_command__eol__BITNR 0 --#define USB_EP_command__eol__WIDTH 1 --#define USB_EP_command__eol__no 0 --#define USB_EP_command__eol__yes 1 -- --#define USB_EP_command__eof__BITNR 1 --#define USB_EP_command__eof__WIDTH 1 --#define USB_EP_command__eof__no 0 --#define USB_EP_command__eof__yes 1 -- --#define USB_EP_command__intr__BITNR 3 --#define USB_EP_command__intr__WIDTH 1 --#define USB_EP_command__intr__no 0 --#define USB_EP_command__intr__yes 1 -- --#define USB_EP_command__enable__BITNR 4 --#define USB_EP_command__enable__WIDTH 1 --#define USB_EP_command__enable__no 0 --#define USB_EP_command__enable__yes 1 -- --#define USB_EP_command__hw_valid__BITNR 5 --#define USB_EP_command__hw_valid__WIDTH 1 --#define USB_EP_command__hw_valid__no 0 --#define USB_EP_command__hw_valid__yes 1 -- --#define USB_EP_command__epid__BITNR 8 --#define USB_EP_command__epid__WIDTH 5 -- --#define USB_SB_command__eol__BITNR 0 /* command macros. */ --#define USB_SB_command__eol__WIDTH 1 --#define USB_SB_command__eol__no 0 --#define USB_SB_command__eol__yes 1 -- --#define USB_SB_command__eot__BITNR 1 --#define USB_SB_command__eot__WIDTH 1 --#define USB_SB_command__eot__no 0 --#define USB_SB_command__eot__yes 1 -- --#define USB_SB_command__intr__BITNR 3 --#define USB_SB_command__intr__WIDTH 1 --#define USB_SB_command__intr__no 0 --#define USB_SB_command__intr__yes 1 -- --#define USB_SB_command__tt__BITNR 4 --#define USB_SB_command__tt__WIDTH 2 --#define USB_SB_command__tt__zout 0 --#define USB_SB_command__tt__in 1 --#define USB_SB_command__tt__out 2 --#define USB_SB_command__tt__setup 3 -- -- --#define USB_SB_command__rem__BITNR 8 --#define USB_SB_command__rem__WIDTH 6 -- --#define USB_SB_command__full__BITNR 6 --#define USB_SB_command__full__WIDTH 1 --#define USB_SB_command__full__no 0 --#define USB_SB_command__full__yes 1 -- --#endif ---- linux-2.6.19.2.orig/drivers/usb/host/hc-crisv10.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/usb/host/hc-crisv10.h 2006-01-27 13:59:58.000000000 +0100 -@@ -0,0 +1,330 @@ -+#ifndef __LINUX_ETRAX_USB_H -+#define __LINUX_ETRAX_USB_H -+ -+#include <linux/types.h> -+#include <linux/list.h> -+ -+struct USB_IN_Desc { -+ volatile __u16 sw_len; -+ volatile __u16 command; -+ volatile unsigned long next; -+ volatile unsigned long buf; -+ volatile __u16 hw_len; -+ volatile __u16 status; -+}; -+ -+struct USB_SB_Desc { -+ volatile __u16 sw_len; -+ volatile __u16 command; -+ volatile unsigned long next; -+ volatile unsigned long buf; -+}; -+ -+struct USB_EP_Desc { -+ volatile __u16 hw_len; -+ volatile __u16 command; -+ volatile unsigned long sub; -+ volatile unsigned long next; -+}; -+ -+ -+/* Root Hub port status struct */ -+struct crisv10_rh { -+ volatile __u16 wPortChange[2]; -+ volatile __u16 wPortStatusPrev[2]; -+}; -+ -+/* HCD description */ -+struct crisv10_hcd { -+ spinlock_t lock; -+ __u8 num_ports; -+ __u8 running; -+}; -+ -+ -+/* Endpoint HC private data description */ -+struct crisv10_ep_priv { -+ int epid; -+}; -+ -+/* Additional software state info for a USB Controller epid */ -+struct etrax_epid { -+ __u8 inuse; /* !0 = setup in Etrax and used for a endpoint */ -+ __u8 disabled; /* !0 = Temporarly disabled to avoid resubmission */ -+ __u8 type; /* Setup as: PIPE_BULK, PIPE_CONTROL ... */ -+ __u8 out_traffic; /* !0 = This epid is for out traffic */ -+}; -+ -+/* Struct to hold information of scheduled later URB completion */ -+struct urb_later_data { -+ struct work_struct ws; -+ struct usb_hcd *hcd; -+ struct urb *urb; -+ int urb_num; -+ int status; -+}; -+ -+ -+typedef enum { -+ STARTED, -+ NOT_STARTED, -+ UNLINK, -+} crisv10_urb_state_t; -+ -+ -+struct crisv10_urb_priv { -+ /* Sequence number for this URB. Every new submited URB gets this from -+ a incrementing counter. Used when a URB is scheduled for later finish to -+ be sure that the intended URB hasn't already been completed (device -+ drivers has a tendency to reuse URBs once they are completed, causing us -+ to not be able to single old ones out only based on the URB pointer.) */ -+ __u32 urb_num; -+ -+ /* The first_sb field is used for freeing all SB descriptors belonging -+ to an urb. The corresponding ep descriptor's sub pointer cannot be -+ used for this since the DMA advances the sub pointer as it processes -+ the sb list. */ -+ struct USB_SB_Desc *first_sb; -+ -+ /* The last_sb field referes to the last SB descriptor that belongs to -+ this urb. This is important to know so we can free the SB descriptors -+ that ranges between first_sb and last_sb. */ -+ struct USB_SB_Desc *last_sb; -+ -+ /* The rx_offset field is used in ctrl and bulk traffic to keep track -+ of the offset in the urb's transfer_buffer where incoming data should be -+ copied to. */ -+ __u32 rx_offset; -+ -+ /* Counter used in isochronous transfers to keep track of the -+ number of packets received/transmitted. */ -+ __u32 isoc_packet_counter; -+ -+ /* Flag that marks if this Isoc Out URB has finished it's transfer. Used -+ because several URBs can be finished before list is processed */ -+ __u8 isoc_out_done; -+ -+ /* This field is used to pass information about the urb's current state -+ between the various interrupt handlers (thus marked volatile). */ -+ volatile crisv10_urb_state_t urb_state; -+ -+ /* In Ctrl transfers consist of (at least) 3 packets: SETUP, IN and ZOUT. -+ When DMA8 sub-channel 2 has processed the SB list for this sequence we -+ get a interrupt. We also get a interrupt for In transfers and which -+ one of these interrupts that comes first depends of data size and device. -+ To be sure that we have got both interrupts before we complete the URB -+ we have these to flags that shows which part that has completed. -+ We can then check when we get one of the interrupts that if the other has -+ occured it's safe for us to complete the URB, otherwise we set appropriate -+ flag and do the completion when we get the other interrupt. */ -+ volatile unsigned char ctrl_zout_done; -+ volatile unsigned char ctrl_rx_done; -+ -+ /* Connection between the submitted urb and ETRAX epid number */ -+ __u8 epid; -+ -+ /* The rx_data_list field is used for periodic traffic, to hold -+ received data for later processing in the the complete_urb functions, -+ where the data us copied to the urb's transfer_buffer. Basically, we -+ use this intermediate storage because we don't know when it's safe to -+ reuse the transfer_buffer (FIXME?). */ -+ struct list_head rx_data_list; -+ -+ -+ /* The interval time rounded up to closest 2^N */ -+ int interval; -+ -+ /* Pool of EP descriptors needed if it's a INTR transfer. -+ Amount of EPs in pool correspons to how many INTR that should -+ be inserted in TxIntrEPList (max 128, defined by MAX_INTR_INTERVAL) */ -+ struct USB_EP_Desc* intr_ep_pool[128]; -+ -+ /* The mount of EPs allocated for this INTR URB */ -+ int intr_ep_pool_length; -+ -+ /* Pointer to info struct if URB is scheduled to be finished later */ -+ struct urb_later_data* later_data; -+}; -+ -+ -+/* This struct is for passing data from the top half to the bottom half irq -+ handlers */ -+struct crisv10_irq_reg { -+ struct usb_hcd* hcd; -+ __u32 r_usb_epid_attn; -+ __u8 r_usb_status; -+ __u16 r_usb_rh_port_status_1; -+ __u16 r_usb_rh_port_status_2; -+ __u32 r_usb_irq_mask_read; -+ __u32 r_usb_fm_number; -+ struct work_struct usb_bh; -+}; -+ -+ -+/* This struct is for passing data from the isoc top half to the isoc bottom -+ half. */ -+struct crisv10_isoc_complete_data { -+ struct usb_hcd *hcd; -+ struct urb *urb; -+ struct work_struct usb_bh; -+}; -+ -+/* Entry item for URB lists for each endpint */ -+typedef struct urb_entry -+{ -+ struct urb *urb; -+ struct list_head list; -+} urb_entry_t; -+ -+/* --------------------------------------------------------------------------- -+ Virtual Root HUB -+ ------------------------------------------------------------------------- */ -+/* destination of request */ -+#define RH_INTERFACE 0x01 -+#define RH_ENDPOINT 0x02 -+#define RH_OTHER 0x03 -+ -+#define RH_CLASS 0x20 -+#define RH_VENDOR 0x40 -+ -+/* Requests: bRequest << 8 | bmRequestType */ -+#define RH_GET_STATUS 0x0080 -+#define RH_CLEAR_FEATURE 0x0100 -+#define RH_SET_FEATURE 0x0300 -+#define RH_SET_ADDRESS 0x0500 -+#define RH_GET_DESCRIPTOR 0x0680 -+#define RH_SET_DESCRIPTOR 0x0700 -+#define RH_GET_CONFIGURATION 0x0880 -+#define RH_SET_CONFIGURATION 0x0900 -+#define RH_GET_STATE 0x0280 -+#define RH_GET_INTERFACE 0x0A80 -+#define RH_SET_INTERFACE 0x0B00 -+#define RH_SYNC_FRAME 0x0C80 -+/* Our Vendor Specific Request */ -+#define RH_SET_EP 0x2000 -+ -+ -+/* Hub port features */ -+#define RH_PORT_CONNECTION 0x00 -+#define RH_PORT_ENABLE 0x01 -+#define RH_PORT_SUSPEND 0x02 -+#define RH_PORT_OVER_CURRENT 0x03 -+#define RH_PORT_RESET 0x04 -+#define RH_PORT_POWER 0x08 -+#define RH_PORT_LOW_SPEED 0x09 -+#define RH_C_PORT_CONNECTION 0x10 -+#define RH_C_PORT_ENABLE 0x11 -+#define RH_C_PORT_SUSPEND 0x12 -+#define RH_C_PORT_OVER_CURRENT 0x13 -+#define RH_C_PORT_RESET 0x14 -+ -+/* Hub features */ -+#define RH_C_HUB_LOCAL_POWER 0x00 -+#define RH_C_HUB_OVER_CURRENT 0x01 -+ -+#define RH_DEVICE_REMOTE_WAKEUP 0x00 -+#define RH_ENDPOINT_STALL 0x01 -+ -+/* Our Vendor Specific feature */ -+#define RH_REMOVE_EP 0x00 -+ -+ -+#define RH_ACK 0x01 -+#define RH_REQ_ERR -1 -+#define RH_NACK 0x00 -+ -+/* Field definitions for */ -+ -+#define USB_IN_command__eol__BITNR 0 /* command macros */ -+#define USB_IN_command__eol__WIDTH 1 -+#define USB_IN_command__eol__no 0 -+#define USB_IN_command__eol__yes 1 -+ -+#define USB_IN_command__intr__BITNR 3 -+#define USB_IN_command__intr__WIDTH 1 -+#define USB_IN_command__intr__no 0 -+#define USB_IN_command__intr__yes 1 -+ -+#define USB_IN_status__eop__BITNR 1 /* status macros. */ -+#define USB_IN_status__eop__WIDTH 1 -+#define USB_IN_status__eop__no 0 -+#define USB_IN_status__eop__yes 1 -+ -+#define USB_IN_status__eot__BITNR 5 -+#define USB_IN_status__eot__WIDTH 1 -+#define USB_IN_status__eot__no 0 -+#define USB_IN_status__eot__yes 1 -+ -+#define USB_IN_status__error__BITNR 6 -+#define USB_IN_status__error__WIDTH 1 -+#define USB_IN_status__error__no 0 -+#define USB_IN_status__error__yes 1 -+ -+#define USB_IN_status__nodata__BITNR 7 -+#define USB_IN_status__nodata__WIDTH 1 -+#define USB_IN_status__nodata__no 0 -+#define USB_IN_status__nodata__yes 1 -+ -+#define USB_IN_status__epid__BITNR 8 -+#define USB_IN_status__epid__WIDTH 5 -+ -+#define USB_EP_command__eol__BITNR 0 -+#define USB_EP_command__eol__WIDTH 1 -+#define USB_EP_command__eol__no 0 -+#define USB_EP_command__eol__yes 1 -+ -+#define USB_EP_command__eof__BITNR 1 -+#define USB_EP_command__eof__WIDTH 1 -+#define USB_EP_command__eof__no 0 -+#define USB_EP_command__eof__yes 1 -+ -+#define USB_EP_command__intr__BITNR 3 -+#define USB_EP_command__intr__WIDTH 1 -+#define USB_EP_command__intr__no 0 -+#define USB_EP_command__intr__yes 1 -+ -+#define USB_EP_command__enable__BITNR 4 -+#define USB_EP_command__enable__WIDTH 1 -+#define USB_EP_command__enable__no 0 -+#define USB_EP_command__enable__yes 1 -+ -+#define USB_EP_command__hw_valid__BITNR 5 -+#define USB_EP_command__hw_valid__WIDTH 1 -+#define USB_EP_command__hw_valid__no 0 -+#define USB_EP_command__hw_valid__yes 1 -+ -+#define USB_EP_command__epid__BITNR 8 -+#define USB_EP_command__epid__WIDTH 5 -+ -+#define USB_SB_command__eol__BITNR 0 /* command macros. */ -+#define USB_SB_command__eol__WIDTH 1 -+#define USB_SB_command__eol__no 0 -+#define USB_SB_command__eol__yes 1 -+ -+#define USB_SB_command__eot__BITNR 1 -+#define USB_SB_command__eot__WIDTH 1 -+#define USB_SB_command__eot__no 0 -+#define USB_SB_command__eot__yes 1 -+ -+#define USB_SB_command__intr__BITNR 3 -+#define USB_SB_command__intr__WIDTH 1 -+#define USB_SB_command__intr__no 0 -+#define USB_SB_command__intr__yes 1 -+ -+#define USB_SB_command__tt__BITNR 4 -+#define USB_SB_command__tt__WIDTH 2 -+#define USB_SB_command__tt__zout 0 -+#define USB_SB_command__tt__in 1 -+#define USB_SB_command__tt__out 2 -+#define USB_SB_command__tt__setup 3 -+ -+ -+#define USB_SB_command__rem__BITNR 8 -+#define USB_SB_command__rem__WIDTH 6 -+ -+#define USB_SB_command__full__BITNR 6 -+#define USB_SB_command__full__WIDTH 1 -+#define USB_SB_command__full__no 0 -+#define USB_SB_command__full__yes 1 -+ -+#endif -diff -urN linux-2.6.19.2.orig/drivers/net/cris/Makefile linux-2.6.19.2.dev/drivers/net/cris/Makefile ---- linux-2.6.19.2.orig/drivers/net/cris/Makefile 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/net/cris/Makefile 2005-01-04 13:09:12.000000000 +0100 -@@ -1 +1,2 @@ - obj-$(CONFIG_ETRAX_ARCH_V10) += eth_v10.o -+obj-$(CONFIG_ETRAX_ARCH_V32) += eth_v32.o -diff -urN linux-2.6.19.2.orig/drivers/net/cris/eth_v10.c linux-2.6.19.2.dev/drivers/net/cris/eth_v10.c ---- linux-2.6.19.2.orig/drivers/net/cris/eth_v10.c 2007-01-10 20:10:37.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/net/cris/eth_v10.c 2007-01-15 16:35:48.000000000 +0100 -@@ -1,221 +1,10 @@ --/* $Id: ethernet.c,v 1.31 2004/10/18 14:49:03 starvik Exp $ -- * -- * e100net.c: A network driver for the ETRAX 100LX network controller. -+/* -+ * Driver for the ETRAX 100LX network controller. - * -- * Copyright (c) 1998-2002 Axis Communications AB. -+ * Copyright (c) 1998-2006 Axis Communications AB. - * - * The outline of this driver comes from skeleton.c. - * -- * $Log: ethernet.c,v $ -- * Revision 1.31 2004/10/18 14:49:03 starvik -- * Use RX interrupt as random source -- * -- * Revision 1.30 2004/09/29 10:44:04 starvik -- * Enabed MAC-address output again -- * -- * Revision 1.29 2004/08/24 07:14:05 starvik -- * Make use of generic MDIO interface and constants. -- * -- * Revision 1.28 2004/08/20 09:37:11 starvik -- * Added support for Intel LXT972A. Creds to Randy Scarborough. -- * -- * Revision 1.27 2004/08/16 12:37:22 starvik -- * Merge of Linux 2.6.8 -- * -- * Revision 1.25 2004/06/21 10:29:57 starvik -- * Merge of Linux 2.6.7 -- * -- * Revision 1.23 2004/06/09 05:29:22 starvik -- * Avoid any race where R_DMA_CH1_FIRST is NULL (may trigger cache bug). -- * -- * Revision 1.22 2004/05/14 07:58:03 starvik -- * Merge of changes from 2.4 -- * -- * Revision 1.20 2004/03/11 11:38:40 starvik -- * Merge of Linux 2.6.4 -- * -- * Revision 1.18 2003/12/03 13:45:46 starvik -- * Use hardware pad for short packets to prevent information leakage. -- * -- * Revision 1.17 2003/07/04 08:27:37 starvik -- * Merge of Linux 2.5.74 -- * -- * Revision 1.16 2003/04/24 08:28:22 starvik -- * New LED behaviour: LED off when no link -- * -- * Revision 1.15 2003/04/09 05:20:47 starvik -- * Merge of Linux 2.5.67 -- * -- * Revision 1.13 2003/03/06 16:11:01 henriken -- * Off by one error in group address register setting. -- * -- * Revision 1.12 2003/02/27 17:24:19 starvik -- * Corrected Rev to Revision -- * -- * Revision 1.11 2003/01/24 09:53:21 starvik -- * Oops. Initialize GA to 0, not to 1 -- * -- * Revision 1.10 2003/01/24 09:50:55 starvik -- * Initialize GA_0 and GA_1 to 0 to avoid matching of unwanted packets -- * -- * Revision 1.9 2002/12/13 07:40:58 starvik -- * Added basic ethtool interface -- * Handled out of memory when allocating new buffers -- * -- * Revision 1.8 2002/12/11 13:13:57 starvik -- * Added arch/ to v10 specific includes -- * Added fix from Linux 2.4 in serial.c (flush_to_flip_buffer) -- * -- * Revision 1.7 2002/11/26 09:41:42 starvik -- * Added e100_set_config (standard interface to set media type) -- * Added protection against preemptive scheduling -- * Added standard MII ioctls -- * -- * Revision 1.6 2002/11/21 07:18:18 starvik -- * Timers must be initialized in 2.5.48 -- * -- * Revision 1.5 2002/11/20 11:56:11 starvik -- * Merge of Linux 2.5.48 -- * -- * Revision 1.4 2002/11/18 07:26:46 starvik -- * Linux 2.5 port of latest Linux 2.4 ethernet driver -- * -- * Revision 1.33 2002/10/02 20:16:17 hp -- * SETF, SETS: Use underscored IO_x_ macros rather than incorrect token concatenation -- * -- * Revision 1.32 2002/09/16 06:05:58 starvik -- * Align memory returned by dev_alloc_skb -- * Moved handling of sent packets to interrupt to avoid reference counting problem -- * -- * Revision 1.31 2002/09/10 13:28:23 larsv -- * Return -EINVAL for unknown ioctls to avoid confusing tools that tests -- * for supported functionality by issuing special ioctls, i.e. wireless -- * extensions. -- * -- * Revision 1.30 2002/05/07 18:50:08 johana -- * Correct spelling in comments. -- * -- * Revision 1.29 2002/05/06 05:38:49 starvik -- * Performance improvements: -- * Large packets are not copied (breakpoint set to 256 bytes) -- * The cache bug workaround is delayed until half of the receive list -- * has been used -- * Added transmit list -- * Transmit interrupts are only enabled when transmit queue is full -- * -- * Revision 1.28.2.1 2002/04/30 08:15:51 starvik -- * Performance improvements: -- * Large packets are not copied (breakpoint set to 256 bytes) -- * The cache bug workaround is delayed until half of the receive list -- * has been used. -- * Added transmit list -- * Transmit interrupts are only enabled when transmit queue is full -- * -- * Revision 1.28 2002/04/22 11:47:21 johana -- * Fix according to 2.4.19-pre7. time_after/time_before and -- * missing end of comment. -- * The patch has a typo for ethernet.c in e100_clear_network_leds(), -- * that is fixed here. -- * -- * Revision 1.27 2002/04/12 11:55:11 bjornw -- * Added TODO -- * -- * Revision 1.26 2002/03/15 17:11:02 bjornw -- * Use prepare_rx_descriptor after the CPU has touched the receiving descs -- * -- * Revision 1.25 2002/03/08 13:07:53 bjornw -- * Unnecessary spinlock removed -- * -- * Revision 1.24 2002/02/20 12:57:43 fredriks -- * Replaced MIN() with min(). -- * -- * Revision 1.23 2002/02/20 10:58:14 fredriks -- * Strip the Ethernet checksum (4 bytes) before forwarding a frame to upper layers. -- * -- * Revision 1.22 2002/01/30 07:48:22 matsfg -- * Initiate R_NETWORK_TR_CTRL -- * -- * Revision 1.21 2001/11/23 11:54:49 starvik -- * Added IFF_PROMISC and IFF_ALLMULTI handling in set_multicast_list -- * Removed compiler warnings -- * -- * Revision 1.20 2001/11/12 19:26:00 pkj -- * * Corrected e100_negotiate() to not assign half to current_duplex when -- * it was supposed to compare them... -- * * Cleaned up failure handling in e100_open(). -- * * Fixed compiler warnings. -- * -- * Revision 1.19 2001/11/09 07:43:09 starvik -- * Added full duplex support -- * Added ioctl to set speed and duplex -- * Clear LED timer only runs when LED is lit -- * -- * Revision 1.18 2001/10/03 14:40:43 jonashg -- * Update rx_bytes counter. -- * -- * Revision 1.17 2001/06/11 12:43:46 olof -- * Modified defines for network LED behavior -- * -- * Revision 1.16 2001/05/30 06:12:46 markusl -- * TxDesc.next should not be set to NULL -- * -- * Revision 1.15 2001/05/29 10:27:04 markusl -- * Updated after review remarks: -- * +Use IO_EXTRACT -- * +Handle underrun -- * -- * Revision 1.14 2001/05/29 09:20:14 jonashg -- * Use driver name on printk output so one can tell which driver that complains. -- * -- * Revision 1.13 2001/05/09 12:35:59 johana -- * Use DMA_NBR and IRQ_NBR defines from dma.h and irq.h -- * -- * Revision 1.12 2001/04/05 11:43:11 tobiasa -- * Check dev before panic. -- * -- * Revision 1.11 2001/04/04 11:21:05 markusl -- * Updated according to review remarks -- * -- * Revision 1.10 2001/03/26 16:03:06 bjornw -- * Needs linux/config.h -- * -- * Revision 1.9 2001/03/19 14:47:48 pkj -- * * Make sure there is always a pause after the network LEDs are -- * changed so they will not look constantly lit during heavy traffic. -- * * Always use HZ when setting times relative to jiffies. -- * * Use LED_NETWORK_SET() when setting the network LEDs. -- * -- * Revision 1.8 2001/02/27 13:52:48 bjornw -- * malloc.h -> slab.h -- * -- * Revision 1.7 2001/02/23 13:46:38 bjornw -- * Spellling check -- * -- * Revision 1.6 2001/01/26 15:21:04 starvik -- * Don't disable interrupts while reading MDIO registers (MDIO is slow) -- * Corrected promiscuous mode -- * Improved deallocation of IRQs ("ifconfig eth0 down" now works) -- * -- * Revision 1.5 2000/11/29 17:22:22 bjornw -- * Get rid of the udword types legacy stuff -- * -- * Revision 1.4 2000/11/22 16:36:09 bjornw -- * Please marketing by using the correct case when spelling Etrax. -- * -- * Revision 1.3 2000/11/21 16:43:04 bjornw -- * Minor short->int change -- * -- * Revision 1.2 2000/11/08 14:27:57 bjornw -- * 2.4 port -- * -- * Revision 1.1 2000/11/06 13:56:00 bjornw -- * Verbatim copy of the 1.24 version of e100net.c from elinux -- * -- * Revision 1.24 2000/10/04 15:55:23 bjornw -- * * Use virt_to_phys etc. for DMA addresses -- * * Removed bogus CHECKSUM_UNNECESSARY -- * -- * - */ - - -@@ -251,6 +40,7 @@ - #include <asm/bitops.h> - #include <asm/ethernet.h> - #include <asm/cache.h> -+#include <asm/arch/io_interface_mux.h> - - //#define ETHDEBUG - #define D(x) -@@ -280,6 +70,9 @@ - * by this lock as well. - */ - spinlock_t lock; -+ -+ spinlock_t led_lock; /* Protect LED state */ -+ spinlock_t transceiver_lock; /* Protect transceiver state. */ - }; - - typedef struct etrax_eth_descr -@@ -296,8 +89,6 @@ - void (*check_duplex)(struct net_device* dev); - }; - --struct transceiver_ops* transceiver; -- - /* Duplex settings */ - enum duplex - { -@@ -308,7 +99,7 @@ - - /* Dma descriptors etc. */ - --#define MAX_MEDIA_DATA_SIZE 1518 -+#define MAX_MEDIA_DATA_SIZE 1522 - - #define MIN_PACKET_LEN 46 - #define ETHER_HEAD_LEN 14 -@@ -332,9 +123,9 @@ - #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 - - /*Intel LXT972A specific*/ --#define MDIO_INT_STATUS_REG_2 0x0011 --#define MDIO_INT_FULL_DUPLEX_IND ( 1 << 9 ) --#define MDIO_INT_SPEED ( 1 << 14 ) -+#define MDIO_INT_STATUS_REG_2 0x0011 -+#define MDIO_INT_FULL_DUPLEX_IND (1 << 9) -+#define MDIO_INT_SPEED (1 << 14) - - /* Network flash constants */ - #define NET_FLASH_TIME (HZ/50) /* 20 ms */ -@@ -345,8 +136,8 @@ - #define NO_NETWORK_ACTIVITY 0 - #define NETWORK_ACTIVITY 1 - --#define NBR_OF_RX_DESC 64 --#define NBR_OF_TX_DESC 256 -+#define NBR_OF_RX_DESC 32 -+#define NBR_OF_TX_DESC 16 - - /* Large packets are sent directly to upper layers while small packets are */ - /* copied (to reduce memory waste). The following constant decides the breakpoint */ -@@ -368,7 +159,6 @@ - static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to - to be processed */ - static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */ --static etrax_eth_descr *myPrevRxDesc; /* The descriptor right before myNextRxDesc */ - - static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32))); - -@@ -378,7 +168,6 @@ - static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32))); - - static unsigned int network_rec_config_shadow = 0; --static unsigned int mdio_phy_addr; /* Transciever address */ - - static unsigned int network_tr_ctrl_shadow = 0; - -@@ -412,7 +201,7 @@ - static void e100_tx_timeout(struct net_device *dev); - static struct net_device_stats *e100_get_stats(struct net_device *dev); - static void set_multicast_list(struct net_device *dev); --static void e100_hardware_send_packet(char *buf, int length); -+static void e100_hardware_send_packet(struct net_local* np, char *buf, int length); - static void update_rx_stats(struct net_device_stats *); - static void update_tx_stats(struct net_device_stats *); - static int e100_probe_transceiver(struct net_device* dev); -@@ -435,7 +224,10 @@ - static void e100_set_network_leds(int active); - - static const struct ethtool_ops e100_ethtool_ops; -- -+#if defined(CONFIG_ETRAX_NO_PHY) -+static void dummy_check_speed(struct net_device* dev); -+static void dummy_check_duplex(struct net_device* dev); -+#else - static void broadcom_check_speed(struct net_device* dev); - static void broadcom_check_duplex(struct net_device* dev); - static void tdk_check_speed(struct net_device* dev); -@@ -444,16 +236,29 @@ - static void intel_check_duplex(struct net_device* dev); - static void generic_check_speed(struct net_device* dev); - static void generic_check_duplex(struct net_device* dev); -+#endif -+#ifdef CONFIG_NET_POLL_CONTROLLER -+static void e100_netpoll(struct net_device* dev); -+#endif -+ -+static int autoneg_normal = 1; - - struct transceiver_ops transceivers[] = - { -+#if defined(CONFIG_ETRAX_NO_PHY) -+ {0x0000, dummy_check_speed, dummy_check_duplex} /* Dummy */ -+#else - {0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */ - {0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */ - {0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */ -- {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ -+ {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ - {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ -+#endif - }; - -+struct transceiver_ops* transceiver = &transceivers[0]; -+static unsigned int mdio_phy_addr = 0; /* PHY address on MDIO bus */ -+ - #define tx_done(dev) (*R_DMA_CH0_CMD == 0) - - /* -@@ -468,18 +273,26 @@ - etrax_ethernet_init(void) - { - struct net_device *dev; -- struct net_local* np; -+ struct net_local* np; - int i, err; - - printk(KERN_INFO -- "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000-2003 Axis Communications AB\n"); -- -+ "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2006 Axis Communications AB\n"); -+ -+ if (cris_request_io_interface(if_eth, cardname)) { -+ printk(KERN_CRIT "etrax_ethernet_init failed to get IO interface\n"); -+ return -EBUSY; -+ } -+ - dev = alloc_etherdev(sizeof(struct net_local)); -- np = dev->priv; -- - if (!dev) - return -ENOMEM; -+ -+ np = netdev_priv(dev); - -+ /* we do our own locking */ -+ dev->features |= NETIF_F_LLTX; -+ - dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ - - /* now setup our etrax specific stuff */ -@@ -495,18 +308,26 @@ - dev->get_stats = e100_get_stats; - dev->set_multicast_list = set_multicast_list; - dev->set_mac_address = e100_set_mac_address; -- dev->ethtool_ops = &e100_ethtool_ops; -+ dev->ethtool_ops = &e100_ethtool_ops; - dev->do_ioctl = e100_ioctl; -- dev->set_config = e100_set_config; -+ dev->set_config = e100_set_config; - dev->tx_timeout = e100_tx_timeout; -+#ifdef CONFIG_NET_POLL_CONTROLLER -+ dev->poll_controller = e100_netpoll; -+#endif -+ -+ spin_lock_init(&np->lock); -+ spin_lock_init(&np->led_lock); -+ spin_lock_init(&np->transceiver_lock); - - /* Initialise the list of Etrax DMA-descriptors */ - - /* Initialise receive descriptors */ - - for (i = 0; i < NBR_OF_RX_DESC; i++) { -- /* Allocate two extra cachelines to make sure that buffer used by DMA -- * does not share cacheline with any other data (to avoid cache bug) -+ /* Allocate two extra cachelines to make sure that buffer used -+ * by DMA does not share cacheline with any other data (to -+ * avoid cache bug) - */ - RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); - if (!RxDescList[i].skb) -@@ -517,6 +338,7 @@ - RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data)); - RxDescList[i].descr.status = 0; - RxDescList[i].descr.hw_len = 0; -+ - prepare_rx_descriptor(&RxDescList[i].descr); - } - -@@ -542,7 +364,6 @@ - - myNextRxDesc = &RxDescList[0]; - myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; -- myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; - myFirstTxDesc = &TxDescList[0]; - myNextTxDesc = &TxDescList[0]; - myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1]; -@@ -563,18 +384,19 @@ - current_speed = 10; - current_speed_selection = 0; /* Auto */ - speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; -- duplex_timer.data = (unsigned long)dev; -+ speed_timer.data = (unsigned long)dev; - speed_timer.function = e100_check_speed; - - clear_led_timer.function = e100_clear_network_leds; -+ clear_led_timer.data = (unsigned long)dev; - - full_duplex = 0; - current_duplex = autoneg; - duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; -- duplex_timer.data = (unsigned long)dev; -+ duplex_timer.data = (unsigned long)dev; - duplex_timer.function = e100_check_duplex; - -- /* Initialize mii interface */ -+ /* Initialize mii interface */ - np->mii_if.phy_id = mdio_phy_addr; - np->mii_if.phy_id_mask = 0x1f; - np->mii_if.reg_num_mask = 0x1f; -@@ -586,6 +408,9 @@ - /* unwanted addresses are matched */ - *R_NETWORK_GA_0 = 0x00000000; - *R_NETWORK_GA_1 = 0x00000000; -+ -+ /* Initialize next time the led can flash */ -+ led_next_time = jiffies; - return 0; - } - -@@ -596,7 +421,7 @@ - static int - e100_set_mac_address(struct net_device *dev, void *p) - { -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); - struct sockaddr *addr = p; - int i; - -@@ -680,17 +505,36 @@ - /* allocate the irq corresponding to the transmitting DMA */ - - if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_interrupt, 0, -- cardname, (void *)dev)) { -+ cardname, (void *)dev)) { - goto grace_exit1; - } - - /* allocate the irq corresponding to the network errors etc */ - - if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0, -- cardname, (void *)dev)) { -+ cardname, (void *)dev)) { - goto grace_exit2; - } - -+ /* -+ * Always allocate the DMA channels after the IRQ, -+ * and clean up on failure. -+ */ -+ -+ if (cris_request_dma(NETWORK_TX_DMA_NBR, -+ cardname, -+ DMA_VERBOSE_ON_ERROR, -+ dma_eth)) { -+ goto grace_exit3; -+ } -+ -+ if (cris_request_dma(NETWORK_RX_DMA_NBR, -+ cardname, -+ DMA_VERBOSE_ON_ERROR, -+ dma_eth)) { -+ goto grace_exit4; -+ } -+ - /* give the HW an idea of what MAC address we want */ - - *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | -@@ -705,6 +549,7 @@ - - *R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */ - #else -+ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, max_size, size1522); - SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive); - SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable); - SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); -@@ -724,8 +569,7 @@ - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable); - *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; - -- save_flags(flags); -- cli(); -+ local_irq_save(flags); - - /* enable the irq's for ethernet DMA */ - -@@ -757,12 +601,13 @@ - - *R_DMA_CH0_FIRST = 0; - *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); -+ netif_start_queue(dev); - -- restore_flags(flags); -+ local_irq_restore(flags); - - /* Probe for transceiver */ - if (e100_probe_transceiver(dev)) -- goto grace_exit3; -+ goto grace_exit5; - - /* Start duplex/speed timers */ - add_timer(&speed_timer); -@@ -771,10 +616,14 @@ - /* We are now ready to accept transmit requeusts from - * the queueing layer of the networking. - */ -- netif_start_queue(dev); -+ netif_carrier_on(dev); - - return 0; - -+grace_exit5: -+ cris_free_dma(NETWORK_RX_DMA_NBR, cardname); -+grace_exit4: -+ cris_free_dma(NETWORK_TX_DMA_NBR, cardname); - grace_exit3: - free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); - grace_exit2: -@@ -785,7 +634,13 @@ - return -EAGAIN; - } - -- -+#if defined(CONFIG_ETRAX_NO_PHY) -+static void -+dummy_check_speed(struct net_device* dev) -+{ -+ current_speed = 100; -+} -+#else - static void - generic_check_speed(struct net_device* dev) - { -@@ -821,15 +676,18 @@ - data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2); - current_speed = (data & MDIO_INT_SPEED ? 100 : 10); - } -- -+#endif - static void - e100_check_speed(unsigned long priv) - { - struct net_device* dev = (struct net_device*)priv; -+ struct net_local *np = netdev_priv(dev); - static int led_initiated = 0; - unsigned long data; - int old_speed = current_speed; - -+ spin_lock(&np->transceiver_lock); -+ - data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR); - if (!(data & BMSR_LSTATUS)) { - current_speed = 0; -@@ -837,14 +695,22 @@ - transceiver->check_speed(dev); - } - -+ spin_lock(&np->led_lock); - if ((old_speed != current_speed) || !led_initiated) { - led_initiated = 1; - e100_set_network_leds(NO_NETWORK_ACTIVITY); -+ if (current_speed) -+ netif_carrier_on(dev); -+ else -+ netif_carrier_off(dev); - } -+ spin_unlock(&np->led_lock); - - /* Reinitialize the timer. */ - speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; - add_timer(&speed_timer); -+ -+ spin_unlock(&np->transceiver_lock); - } - - static void -@@ -857,7 +723,7 @@ - ADVERTISE_10HALF | ADVERTISE_10FULL); - - switch (current_speed_selection) { -- case 10 : -+ case 10: - if (current_duplex == full) - data |= ADVERTISE_10FULL; - else if (current_duplex == half) -@@ -866,7 +732,7 @@ - data |= ADVERTISE_10HALF | ADVERTISE_10FULL; - break; - -- case 100 : -+ case 100: - if (current_duplex == full) - data |= ADVERTISE_100FULL; - else if (current_duplex == half) -@@ -875,45 +741,54 @@ - data |= ADVERTISE_100HALF | ADVERTISE_100FULL; - break; - -- case 0 : /* Auto */ -+ case 0: /* Auto */ - if (current_duplex == full) - data |= ADVERTISE_100FULL | ADVERTISE_10FULL; - else if (current_duplex == half) - data |= ADVERTISE_100HALF | ADVERTISE_10HALF; - else - data |= ADVERTISE_10HALF | ADVERTISE_10FULL | -- ADVERTISE_100HALF | ADVERTISE_100FULL; -+ ADVERTISE_100HALF | ADVERTISE_100FULL; - break; - -- default : /* assume autoneg speed and duplex */ -+ default: /* assume autoneg speed and duplex */ - data |= ADVERTISE_10HALF | ADVERTISE_10FULL | -- ADVERTISE_100HALF | ADVERTISE_100FULL; -+ ADVERTISE_100HALF | ADVERTISE_100FULL; -+ break; - } - - e100_set_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE, data); - - /* Renegotiate with link partner */ -- data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR); -- data |= BMCR_ANENABLE | BMCR_ANRESTART; -- -+ if (autoneg_normal) { -+ data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR); -+ data |= BMCR_ANENABLE | BMCR_ANRESTART; -+ } - e100_set_mdio_reg(dev, mdio_phy_addr, MII_BMCR, data); - } - - static void - e100_set_speed(struct net_device* dev, unsigned long speed) - { -+ struct net_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->transceiver_lock); - if (speed != current_speed_selection) { - current_speed_selection = speed; - e100_negotiate(dev); - } -+ spin_unlock(&np->transceiver_lock); - } - - static void - e100_check_duplex(unsigned long priv) - { - struct net_device *dev = (struct net_device *)priv; -- struct net_local *np = (struct net_local *)dev->priv; -- int old_duplex = full_duplex; -+ struct net_local *np = netdev_priv(dev); -+ int old_duplex; -+ -+ spin_lock(&np->transceiver_lock); -+ old_duplex = full_duplex; - transceiver->check_duplex(dev); - if (old_duplex != full_duplex) { - /* Duplex changed */ -@@ -925,12 +800,20 @@ - duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; - add_timer(&duplex_timer); - np->mii_if.full_duplex = full_duplex; -+ spin_unlock(&np->transceiver_lock); - } -- -+#if defined(CONFIG_ETRAX_NO_PHY) -+static void -+dummy_check_duplex(struct net_device* dev) -+{ -+ full_duplex = 1; -+} -+#else - static void - generic_check_duplex(struct net_device* dev) - { - unsigned long data; -+ - data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE); - if ((data & ADVERTISE_10FULL) || - (data & ADVERTISE_100FULL)) -@@ -943,6 +826,7 @@ - tdk_check_duplex(struct net_device* dev) - { - unsigned long data; -+ - data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG); - full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; - } -@@ -951,6 +835,7 @@ - broadcom_check_duplex(struct net_device* dev) - { - unsigned long data; -+ - data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG); - full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; - } -@@ -959,26 +844,35 @@ - intel_check_duplex(struct net_device* dev) - { - unsigned long data; -+ - data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2); - full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; - } -- -+#endif - static void - e100_set_duplex(struct net_device* dev, enum duplex new_duplex) - { -+ struct net_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->transceiver_lock); - if (new_duplex != current_duplex) { - current_duplex = new_duplex; - e100_negotiate(dev); - } -+ spin_unlock(&np->transceiver_lock); - } - - static int - e100_probe_transceiver(struct net_device* dev) - { -+#if !defined(CONFIG_ETRAX_NO_PHY) - unsigned int phyid_high; - unsigned int phyid_low; - unsigned int oui; - struct transceiver_ops* ops = NULL; -+ struct net_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->transceiver_lock); - - /* Probe MDIO physical address */ - for (mdio_phy_addr = 0; mdio_phy_addr <= 31; mdio_phy_addr++) { -@@ -986,7 +880,7 @@ - break; - } - if (mdio_phy_addr == 32) -- return -ENODEV; -+ return -ENODEV; - - /* Get manufacturer */ - phyid_high = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID1); -@@ -999,6 +893,8 @@ - } - transceiver = ops; - -+ spin_unlock(&np->transceiver_lock); -+#endif - return 0; - } - -@@ -1006,7 +902,7 @@ - e100_get_mdio_reg(struct net_device *dev, int phy_id, int location) - { - unsigned short cmd; /* Data to be sent on MDIO port */ -- int data; /* Data read from MDIO */ -+ int data; /* Data read from MDIO */ - int bitCounter; - - /* Start of frame, OP Code, Physical Address, Register Address */ -@@ -1082,6 +978,7 @@ - e100_receive_mdio_bit() - { - unsigned char bit; -+ - *R_NETWORK_MGM_CTRL = 0; - bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT); - udelay(1); -@@ -1117,7 +1014,7 @@ - static void - e100_tx_timeout(struct net_device *dev) - { -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); - unsigned long flags; - - spin_lock_irqsave(&np->lock, flags); -@@ -1139,8 +1036,7 @@ - e100_reset_transceiver(dev); - - /* and get rid of the packets that never got an interrupt */ -- while (myFirstTxDesc != myNextTxDesc) -- { -+ while (myFirstTxDesc != myNextTxDesc) { - dev_kfree_skb(myFirstTxDesc->skb); - myFirstTxDesc->skb = 0; - myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); -@@ -1166,7 +1062,7 @@ - static int - e100_send_packet(struct sk_buff *skb, struct net_device *dev) - { -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); - unsigned char *buf = skb->data; - unsigned long flags; - -@@ -1179,7 +1075,7 @@ - - dev->trans_start = jiffies; - -- e100_hardware_send_packet(buf, skb->len); -+ e100_hardware_send_packet(np, buf, skb->len); - - myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); - -@@ -1202,13 +1098,15 @@ - e100rxtx_interrupt(int irq, void *dev_id) - { - struct net_device *dev = (struct net_device *)dev_id; -- struct net_local *np = (struct net_local *)dev->priv; -- unsigned long irqbits = *R_IRQ_MASK2_RD; -+ struct net_local *np = netdev_priv(dev); -+ unsigned long irqbits; - -- /* Disable RX/TX IRQs to avoid reentrancy */ -- *R_IRQ_MASK2_CLR = -- IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | -- IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); -+ /* -+ * Note that both rx and tx interrupts are blocked at this point, -+ * regardless of which got us here. -+ */ -+ -+ irqbits = *R_IRQ_MASK2_RD; - - /* Handle received packets */ - if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) { -@@ -1224,7 +1122,7 @@ - * allocate a new buffer to put a packet in. - */ - e100_rx(dev); -- ((struct net_local *)dev->priv)->stats.rx_packets++; -+ np->stats.rx_packets++; - /* restart/continue on the channel, for safety */ - *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart); - /* clear dma channel 1 eop/descr irq bits */ -@@ -1239,8 +1137,7 @@ - - /* Report any packets that have been sent */ - while (myFirstTxDesc != phys_to_virt(*R_DMA_CH0_FIRST) && -- myFirstTxDesc != myNextTxDesc) -- { -+ (netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) { - np->stats.tx_bytes += myFirstTxDesc->skb->len; - np->stats.tx_packets++; - -@@ -1249,19 +1146,15 @@ - dev_kfree_skb_irq(myFirstTxDesc->skb); - myFirstTxDesc->skb = 0; - myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); -+ /* Wake up queue. */ -+ netif_wake_queue(dev); - } - - if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { -- /* acknowledge the eop interrupt and wake up queue */ -+ /* acknowledge the eop interrupt. */ - *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); -- netif_wake_queue(dev); - } - -- /* Enable RX/TX IRQs again */ -- *R_IRQ_MASK2_SET = -- IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | -- IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); -- - return IRQ_HANDLED; - } - -@@ -1269,7 +1162,7 @@ - e100nw_interrupt(int irq, void *dev_id) - { - struct net_device *dev = (struct net_device *)dev_id; -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); - unsigned long irqbits = *R_IRQ_MASK0_RD; - - /* check for underrun irq */ -@@ -1291,7 +1184,6 @@ - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); - *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); -- *R_NETWORK_TR_CTRL = IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr); - np->stats.tx_errors++; - D(printk("ethernet excessive collisions!\n")); - } -@@ -1304,12 +1196,13 @@ - { - struct sk_buff *skb; - int length = 0; -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); - unsigned char *skb_data_ptr; - #ifdef ETHDEBUG - int i; - #endif -- -+ etrax_eth_descr *prevRxDesc; /* The descriptor right before myNextRxDesc */ -+ spin_lock(&np->led_lock); - if (!led_active && time_after(jiffies, led_next_time)) { - /* light the network leds depending on the current speed. */ - e100_set_network_leds(NETWORK_ACTIVITY); -@@ -1319,9 +1212,10 @@ - led_active = 1; - mod_timer(&clear_led_timer, jiffies + HZ/10); - } -+ spin_unlock(&np->led_lock); - - length = myNextRxDesc->descr.hw_len - 4; -- ((struct net_local *)dev->priv)->stats.rx_bytes += length; -+ np->stats.rx_bytes += length; - - #ifdef ETHDEBUG - printk("Got a packet of length %d:\n", length); -@@ -1341,7 +1235,7 @@ - if (!skb) { - np->stats.rx_errors++; - printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); -- return; -+ goto update_nextrxdesc; - } - - skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */ -@@ -1358,15 +1252,15 @@ - else { - /* Large packet, send directly to upper layers and allocate new - * memory (aligned to cache line boundary to avoid bug). -- * Before sending the skb to upper layers we must make sure that -- * skb->data points to the aligned start of the packet. -+ * Before sending the skb to upper layers we must make sure -+ * that skb->data points to the aligned start of the packet. - */ - int align; - struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); - if (!new_skb) { - np->stats.rx_errors++; - printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); -- return; -+ goto update_nextrxdesc; - } - skb = myNextRxDesc->skb; - align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data; -@@ -1382,9 +1276,10 @@ - /* Send the packet to the upper layers */ - netif_rx(skb); - -+ update_nextrxdesc: - /* Prepare for next packet */ - myNextRxDesc->descr.status = 0; -- myPrevRxDesc = myNextRxDesc; -+ prevRxDesc = myNextRxDesc; - myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next); - - rx_queue_len++; -@@ -1392,9 +1287,9 @@ - /* Check if descriptors should be returned */ - if (rx_queue_len == RX_QUEUE_THRESHOLD) { - flush_etrax_cache(); -- myPrevRxDesc->descr.ctrl |= d_eol; -+ prevRxDesc->descr.ctrl |= d_eol; - myLastRxDesc->descr.ctrl &= ~d_eol; -- myLastRxDesc = myPrevRxDesc; -+ myLastRxDesc = prevRxDesc; - rx_queue_len = 0; - } - } -@@ -1403,7 +1298,7 @@ - static int - e100_close(struct net_device *dev) - { -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); - - printk(KERN_INFO "Closing %s.\n", dev->name); - -@@ -1431,6 +1326,9 @@ - free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); - free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); - -+ cris_free_dma(NETWORK_TX_DMA_NBR, cardname); -+ cris_free_dma(NETWORK_RX_DMA_NBR, cardname); -+ - /* Update the statistics here. */ - - update_rx_stats(&np->stats); -@@ -1448,46 +1346,56 @@ - { - struct mii_ioctl_data *data = if_mii(ifr); - struct net_local *np = netdev_priv(dev); -+ int ret = 0; -+ int old_autoneg; - - spin_lock(&np->lock); /* Preempt protection */ - switch (cmd) { -- case SIOCGMIIPHY: /* Get PHY address */ -+ case SIOCGMIIPHY: /* Get PHY address */ - data->phy_id = mdio_phy_addr; - break; -- case SIOCGMIIREG: /* Read MII register */ -+ case SIOCGMIIREG: /* Read MII register */ - data->val_out = e100_get_mdio_reg(dev, mdio_phy_addr, data->reg_num); - break; -- case SIOCSMIIREG: /* Write MII register */ -+ case SIOCSMIIREG: /* Write MII register */ - e100_set_mdio_reg(dev, mdio_phy_addr, data->reg_num, data->val_in); - break; -+ - /* The ioctls below should be considered obsolete but are */ - /* still present for compatability with old scripts/apps */ -- case SET_ETH_SPEED_10: /* 10 Mbps */ -+ case SET_ETH_SPEED_10: /* 10 Mbps */ - e100_set_speed(dev, 10); - break; -- case SET_ETH_SPEED_100: /* 100 Mbps */ -+ case SET_ETH_SPEED_100: /* 100 Mbps */ - e100_set_speed(dev, 100); - break; -- case SET_ETH_SPEED_AUTO: /* Auto negotiate speed */ -+ case SET_ETH_SPEED_AUTO: /* Auto-negotiate speed */ - e100_set_speed(dev, 0); - break; -- case SET_ETH_DUPLEX_HALF: /* Half duplex. */ -+ case SET_ETH_DUPLEX_HALF: /* Half duplex */ - e100_set_duplex(dev, half); - break; -- case SET_ETH_DUPLEX_FULL: /* Full duplex. */ -+ case SET_ETH_DUPLEX_FULL: /* Full duplex */ - e100_set_duplex(dev, full); - break; -- case SET_ETH_DUPLEX_AUTO: /* Autonegotiate duplex*/ -+ case SET_ETH_DUPLEX_AUTO: /* Auto-negotiate duplex */ - e100_set_duplex(dev, autoneg); - break; -+ case SET_ETH_AUTONEG: -+ old_autoneg = autoneg_normal; -+ autoneg_normal = *(int*)data; -+ if (autoneg_normal != old_autoneg) -+ e100_negotiate(dev); -+ break; - default: -+ spin_unlock(&np->lock); - return -EINVAL; - } - spin_unlock(&np->lock); -- return 0; -+ return ret; - } - --static int e100_set_settings(struct net_device *dev, -+static int e100_get_settings(struct net_device *dev, - struct ethtool_cmd *ecmd) - { - ecmd->supported = SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII | -@@ -1565,7 +1473,8 @@ - static int - e100_set_config(struct net_device *dev, struct ifmap *map) - { -- struct net_local *np = (struct net_local *)dev->priv; -+ struct net_local *np = netdev_priv(dev); -+ - spin_lock(&np->lock); /* Preempt protection */ - - switch(map->port) { -@@ -1574,21 +1483,25 @@ - e100_set_speed(dev, 0); - e100_set_duplex(dev, autoneg); - break; -+ - case IF_PORT_10BASET: - e100_set_speed(dev, 10); - e100_set_duplex(dev, autoneg); - break; -+ - case IF_PORT_100BASET: - case IF_PORT_100BASETX: - e100_set_speed(dev, 100); - e100_set_duplex(dev, autoneg); - break; -+ - case IF_PORT_100BASEFX: - case IF_PORT_10BASE2: - case IF_PORT_AUI: - spin_unlock(&np->lock); - return -EOPNOTSUPP; - break; -+ - default: - printk(KERN_ERR "%s: Invalid media selected", dev->name); - spin_unlock(&np->lock); -@@ -1602,6 +1515,7 @@ - update_rx_stats(struct net_device_stats *es) - { - unsigned long r = *R_REC_COUNTERS; -+ - /* update stats relevant to reception errors */ - es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r); - es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r); -@@ -1613,11 +1527,11 @@ - update_tx_stats(struct net_device_stats *es) - { - unsigned long r = *R_TR_COUNTERS; -+ - /* update stats relevant to transmission errors */ - es->collisions += - IO_EXTRACT(R_TR_COUNTERS, single_col, r) + - IO_EXTRACT(R_TR_COUNTERS, multiple_col, r); -- es->tx_errors += IO_EXTRACT(R_TR_COUNTERS, deferred, r); - } - - /* -@@ -1627,8 +1541,9 @@ - static struct net_device_stats * - e100_get_stats(struct net_device *dev) - { -- struct net_local *lp = (struct net_local *)dev->priv; -+ struct net_local *lp = netdev_priv(dev); - unsigned long flags; -+ - spin_lock_irqsave(&lp->lock, flags); - - update_rx_stats(&lp->stats); -@@ -1640,21 +1555,21 @@ - - /* - * Set or clear the multicast filter for this adaptor. -- * num_addrs == -1 Promiscuous mode, receive all packets -- * num_addrs == 0 Normal mode, clear multicast list -- * num_addrs > 0 Multicast mode, receive normal and MC packets, -- * and do best-effort filtering. -+ * num_addrs == -1 Promiscuous mode, receive all packets -+ * num_addrs == 0 Normal mode, clear multicast list -+ * num_addrs > 0 Multicast mode, receive normal and MC packets, -+ * and do best-effort filtering. - */ - static void - set_multicast_list(struct net_device *dev) - { -- struct net_local *lp = (struct net_local *)dev->priv; -+ struct net_local *lp = netdev_priv(dev); - int num_addr = dev->mc_count; - unsigned long int lo_bits; - unsigned long int hi_bits; -+ - spin_lock(&lp->lock); -- if (dev->flags & IFF_PROMISC) -- { -+ if (dev->flags & IFF_PROMISC) { - /* promiscuous mode */ - lo_bits = 0xfffffffful; - hi_bits = 0xfffffffful; -@@ -1684,9 +1599,10 @@ - struct dev_mc_list *dmi = dev->mc_list; - int i; - char *baddr; -+ - lo_bits = 0x00000000ul; - hi_bits = 0x00000000ul; -- for (i=0; i<num_addr; i++) { -+ for (i = 0; i < num_addr; i++) { - /* Calculate the hash index for the GA registers */ - - hash_ix = 0; -@@ -1713,8 +1629,7 @@ - - if (hash_ix >= 32) { - hi_bits |= (1 << (hash_ix-32)); -- } -- else { -+ } else { - lo_bits |= (1 << hash_ix); - } - dmi = dmi->next; -@@ -1729,10 +1644,11 @@ - } - - void --e100_hardware_send_packet(char *buf, int length) -+e100_hardware_send_packet(struct net_local *np, char *buf, int length) - { - D(printk("e100 send pack, buf 0x%x len %d\n", buf, length)); - -+ spin_lock(&np->led_lock); - if (!led_active && time_after(jiffies, led_next_time)) { - /* light the network leds depending on the current speed. */ - e100_set_network_leds(NETWORK_ACTIVITY); -@@ -1742,15 +1658,16 @@ - led_active = 1; - mod_timer(&clear_led_timer, jiffies + HZ/10); - } -+ spin_unlock(&np->led_lock); - - /* configure the tx dma descriptor */ - myNextTxDesc->descr.sw_len = length; - myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait; - myNextTxDesc->descr.buf = virt_to_phys(buf); - -- /* Move end of list */ -- myLastTxDesc->descr.ctrl &= ~d_eol; -- myLastTxDesc = myNextTxDesc; -+ /* Move end of list */ -+ myLastTxDesc->descr.ctrl &= ~d_eol; -+ myLastTxDesc = myNextTxDesc; - - /* Restart DMA channel */ - *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart); -@@ -1759,6 +1676,11 @@ - static void - e100_clear_network_leds(unsigned long dummy) - { -+ struct net_device *dev = (struct net_device *)dummy; -+ struct net_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->led_lock); -+ - if (led_active && time_after(jiffies, led_next_time)) { - e100_set_network_leds(NO_NETWORK_ACTIVITY); - -@@ -1766,6 +1688,8 @@ - led_next_time = jiffies + NET_FLASH_PAUSE; - led_active = 0; - } -+ -+ spin_unlock(&np->led_lock); - } - - static void -@@ -1786,19 +1710,25 @@ - #else - LED_NETWORK_SET(LED_OFF); - #endif -- } -- else if (light_leds) { -+ } else if (light_leds) { - if (current_speed == 10) { - LED_NETWORK_SET(LED_ORANGE); - } else { - LED_NETWORK_SET(LED_GREEN); - } -- } -- else { -+ } else { - LED_NETWORK_SET(LED_OFF); - } - } - -+#ifdef CONFIG_NET_POLL_CONTROLLER -+static void -+e100_netpoll(struct net_device* netdev) -+{ -+ e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev, NULL); -+} -+#endif -+ - static int - etrax_init_module(void) - { -diff -urN linux-2.6.19.2.orig/drivers/net/cris/eth_v32.c linux-2.6.19.2.dev/drivers/net/cris/eth_v32.c ---- linux-2.6.19.2.orig/drivers/net/cris/eth_v32.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/net/cris/eth_v32.c 2007-02-06 11:10:37.000000000 +0100 -@@ -0,0 +1,2305 @@ -+/* -+ * Driver for the ETRAX FS network controller. -+ * -+ * Copyright (c) 2003-2006 Axis Communications AB. -+ */ -+ -+#include <linux/module.h> -+ -+#include <linux/kernel.h> -+#include <linux/sched.h> -+#include <linux/delay.h> -+#include <linux/types.h> -+#include <linux/fcntl.h> -+#include <linux/interrupt.h> -+#include <linux/ptrace.h> -+#include <linux/ioport.h> -+#include <linux/in.h> -+#include <linux/slab.h> -+#include <linux/string.h> -+#include <linux/spinlock.h> -+#include <linux/errno.h> -+#include <linux/init.h> -+#include <linux/cpufreq.h> -+ -+#include <linux/netdevice.h> -+#include <linux/etherdevice.h> -+#include <linux/skbuff.h> -+#include <linux/ethtool.h> -+#include <linux/mii.h> -+ -+#include <asm/io.h> /* LED_* I/O functions */ -+#include <asm/irq.h> -+#include <asm/arch/hwregs/reg_map.h> -+#include <asm/arch/hwregs/reg_rdwr.h> -+#include <asm/arch/hwregs/dma.h> -+#include <asm/arch/hwregs/eth_defs.h> -+#include <asm/arch/hwregs/config_defs.h> -+#include <asm/arch/hwregs/intr_vect_defs.h> -+#include <asm/system.h> -+#include <asm/bitops.h> -+#include <asm/ethernet.h> -+#include <asm/arch/dma.h> -+#include <asm/arch/intmem.h> -+#include <asm/arch/pinmux.h> -+ -+#include "eth_v32.h" -+ -+#define DEBUG(x) -+#define GET_BIT(bit,val) (((val) >> (bit)) & 0x01) -+ -+/* Toggle network LEDs on/off at runtime */ -+static int use_network_leds = 1; -+ -+static void update_rx_stats(struct crisv32_ethernet_local *np); -+static void update_tx_stats(struct crisv32_ethernet_local *np); -+static void crisv32_eth_setup_controller(struct net_device *dev); -+static int crisv32_eth_request_irqdma(struct net_device *dev); -+static void crisv32_eth_init_rings(struct net_device *dev); -+static void crisv32_eth_reset_rings(struct net_device *dev); -+static void crisv32_ethernet_bug(struct net_device *dev); -+ -+/* -+ * The name of the card. Is used for messages and in the requests for -+ * io regions, irqs and dma channels. -+ */ -+static const char *cardname = "ETRAX FS built-in ethernet controller"; -+ -+static int autoneg_normal = 1; -+ -+/* Some chipset needs special care. */ -+struct transceiver_ops transceivers[] = { -+ {0x1018, broadcom_check_speed, broadcom_check_duplex}, -+ /* TDK 2120 and TDK 2120C */ -+ {0xC039, tdk_check_speed, tdk_check_duplex}, -+ {0x039C, tdk_check_speed, tdk_check_duplex}, -+ /* Intel LXT972A*/ -+ {0x04de, intel_check_speed, intel_check_duplex}, -+ /* National Semiconductor DP83865 */ -+ {0x0017, national_check_speed, national_check_duplex}, -+ /* Generic, must be last. */ -+ {0x0000, generic_check_speed, generic_check_duplex} -+}; -+ -+static struct net_device *crisv32_dev[2]; -+static struct crisv32_eth_leds *crisv32_leds[3]; -+ -+#ifdef CONFIG_CPU_FREQ -+static int -+crisv32_ethernet_freq_notifier(struct notifier_block *nb, unsigned long val, -+ void *data); -+ -+static struct notifier_block crisv32_ethernet_freq_notifier_block = { -+ .notifier_call = crisv32_ethernet_freq_notifier -+}; -+#endif -+ -+/* -+ * mask in and out tx/rx interrupts. -+ */ -+static inline void crisv32_disable_tx_ints(struct crisv32_ethernet_local *np) -+{ -+ reg_dma_rw_intr_mask intr_mask_tx = { .data = regk_dma_no }; -+ REG_WR(dma, np->dma_out_inst, rw_intr_mask, intr_mask_tx); -+} -+ -+static inline void crisv32_enable_tx_ints(struct crisv32_ethernet_local *np) -+{ -+ reg_dma_rw_intr_mask intr_mask_tx = { .data = regk_dma_yes }; -+ REG_WR(dma, np->dma_out_inst, rw_intr_mask, intr_mask_tx); -+} -+ -+static inline void crisv32_disable_rx_ints(struct crisv32_ethernet_local *np) -+{ -+ reg_dma_rw_intr_mask intr_mask_rx = { .in_eop = regk_dma_no }; -+ REG_WR(dma, np->dma_in_inst, rw_intr_mask, intr_mask_rx); -+} -+ -+static inline void crisv32_enable_rx_ints(struct crisv32_ethernet_local *np) -+{ -+ reg_dma_rw_intr_mask intr_mask_rx = { .in_eop = regk_dma_yes }; -+ REG_WR(dma, np->dma_in_inst, rw_intr_mask, intr_mask_rx); -+} -+ -+/* start/stop receiver */ -+static inline void crisv32_start_receiver(struct crisv32_ethernet_local *np) -+{ -+ reg_eth_rw_rec_ctrl rec_ctrl; -+ -+ rec_ctrl = REG_RD(eth, np->eth_inst, rw_rec_ctrl); -+ rec_ctrl.ma0 = regk_eth_yes; -+ rec_ctrl.broadcast = regk_eth_rec; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+} -+ -+static inline void crisv32_stop_receiver(struct crisv32_ethernet_local *np) -+{ -+ reg_eth_rw_rec_ctrl rec_ctrl; -+ -+ rec_ctrl = REG_RD(eth, np->eth_inst, rw_rec_ctrl); -+ rec_ctrl.ma0 = regk_eth_no; -+ rec_ctrl.broadcast = regk_eth_discard; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+} -+ -+static int __init -+crisv32_eth_request_irqdma(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ /* Allocate IRQs and DMAs. */ -+ if (np->eth_inst == regi_eth0) { -+ if (request_irq(DMA0_INTR_VECT, crisv32tx_eth_interrupt, -+ 0, cardname, dev)) { -+ return -EAGAIN; -+ } -+ -+ if (request_irq(DMA1_INTR_VECT, crisv32rx_eth_interrupt, -+ IRQF_SAMPLE_RANDOM, cardname, dev)) { -+ goto err0_1; -+ } -+ -+ if (crisv32_request_dma(0, cardname, DMA_VERBOSE_ON_ERROR, -+ 12500000, dma_eth0)) -+ goto err0_2; -+ -+ if (crisv32_request_dma(1, cardname, DMA_VERBOSE_ON_ERROR, -+ 12500000, dma_eth0)) -+ goto err0_3; -+ -+ if (request_irq(ETH0_INTR_VECT, crisv32nw_eth_interrupt, 0, -+ cardname, dev)) { -+ crisv32_free_dma(1); -+ err0_3: -+ crisv32_free_dma(0); -+ err0_2: -+ free_irq(DMA1_INTR_VECT, dev); -+ err0_1: -+ free_irq(DMA0_INTR_VECT, dev); -+ return -EAGAIN; -+ } -+ } else { -+ if (request_irq(DMA6_INTR_VECT, crisv32tx_eth_interrupt, -+ 0, cardname, dev)) -+ return -EAGAIN; -+ -+ if (request_irq(DMA7_INTR_VECT, crisv32rx_eth_interrupt, -+ IRQF_SAMPLE_RANDOM, cardname, dev)) -+ goto err1_1; -+ -+ if (crisv32_request_dma(6, cardname, DMA_VERBOSE_ON_ERROR, -+ 0, dma_eth1)) -+ goto err1_2; -+ -+ if (crisv32_request_dma(7, cardname, DMA_VERBOSE_ON_ERROR, -+ 0, dma_eth1)) -+ goto err1_3; -+ -+ if (request_irq(ETH1_INTR_VECT, crisv32nw_eth_interrupt, 0, -+ cardname, dev)) { -+ crisv32_free_dma(7); -+ err1_3: -+ crisv32_free_dma(6); -+ err1_2: -+ free_irq(DMA7_INTR_VECT, dev); -+ err1_1: -+ free_irq(DMA6_INTR_VECT, dev); -+ return -EAGAIN; -+ } -+ } -+ return 0; -+} -+ -+static void __init -+crisv32_eth_setup_controller(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ reg_config_rw_pad_ctrl pad_ctrl; -+ -+ reg_eth_rw_tr_ctrl tr_ctrl = { -+ .retry = regk_eth_yes, -+ .pad = regk_eth_yes, -+ .crc = regk_eth_yes -+ }; -+ -+ reg_eth_rw_rec_ctrl rec_ctrl = { -+ .ma0 = regk_eth_no, /* enable at open() */ -+ .broadcast = regk_eth_no, -+ .max_size = regk_eth_size1522 -+ }; -+ -+ reg_eth_rw_ga_lo ga_lo = { 0 }; -+ reg_eth_rw_ga_hi ga_hi = { 0 }; -+ -+ reg_eth_rw_gen_ctrl gen_ctrl = { -+ .phy = regk_eth_mii_clk, -+ .flow_ctrl = regk_eth_yes -+ }; -+ -+ /* -+ * Initialize group address registers to make sure that no -+ * unwanted addresses are matched. -+ */ -+ REG_WR(eth, np->eth_inst, rw_ga_lo, ga_lo); -+ REG_WR(eth, np->eth_inst, rw_ga_hi, ga_hi); -+ -+ /* Configure receiver and transmitter */ -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+ REG_WR(eth, np->eth_inst, rw_tr_ctrl, tr_ctrl); -+ -+ /* Enable ethernet controller with mii clk. */ -+ REG_WR(eth, np->eth_inst, rw_gen_ctrl, gen_ctrl); -+ gen_ctrl.en = regk_eth_yes; -+ REG_WR(eth, np->eth_inst, rw_gen_ctrl, gen_ctrl); -+ -+ /* keep reset low (RESET_LEN) */ -+ udelay(500); -+ -+ /* done */ -+ pad_ctrl = REG_RD(config, regi_config, rw_pad_ctrl); -+ pad_ctrl.phyrst_n = 1; -+ REG_WR(config, regi_config, rw_pad_ctrl, pad_ctrl); -+ -+ /* Let the PHY reset (RESET_WAIT) */ -+ udelay(200); -+ -+ crisv32_eth_probe_transceiver(dev); -+} -+ -+static void __init -+crisv32_eth_init_rings(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ int i; -+ -+ /* Initialise receive descriptors for interface. */ -+ for (i = 0; i < NBR_RX_DESC; i++) { -+ struct sk_buff *skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE); -+ -+ np->dma_rx_descr_list[i].skb = skb; -+ np->dma_rx_descr_list[i].descr.buf = -+ (char*)virt_to_phys(skb->data); -+ np->dma_rx_descr_list[i].descr.after = -+ (char*)virt_to_phys(skb->data + MAX_MEDIA_DATA_SIZE); -+ -+ np->dma_rx_descr_list[i].descr.eol = 0; -+ np->dma_rx_descr_list[i].descr.in_eop = 0; -+ np->dma_rx_descr_list[i].descr.next = -+ (void *) virt_to_phys(&np->dma_rx_descr_list[i + 1].descr); -+ } -+ /* bend the list into a ring */ -+ np->dma_rx_descr_list[NBR_RX_DESC - 1].descr.next = -+ (void *) virt_to_phys(&np->dma_rx_descr_list[0].descr); -+ -+ /* Initialize transmit descriptors. */ -+ for (i = 0; i < NBR_TX_DESC; i++) { -+ np->dma_tx_descr_list[i].descr.wait = 1; -+ np->dma_tx_descr_list[i].descr.eol = 0; -+ np->dma_tx_descr_list[i].descr.out_eop = 0; -+ np->dma_tx_descr_list[i].descr.next = -+ (void*)virt_to_phys(&np->dma_tx_descr_list[i+1].descr); -+ } -+ /* bend the list into a ring */ -+ np->dma_tx_descr_list[NBR_TX_DESC - 1].descr.next = -+ (void *) virt_to_phys(&np->dma_tx_descr_list[0].descr); -+ -+ crisv32_eth_reset_rings(dev); -+} -+ -+static void -+crisv32_eth_reset_rings(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ int i; -+ -+ /* free un-handled tx packets */ -+ while(np->txpackets -+ || np->catch_tx_desc != np->active_tx_desc) { -+ np->txpackets--; -+ if (np->catch_tx_desc->skb) -+ dev_kfree_skb(np->catch_tx_desc->skb); -+ -+ np->catch_tx_desc->skb = 0; -+ np->catch_tx_desc = -+ phys_to_virt((int)np->catch_tx_desc->descr.next); -+ } while (np->catch_tx_desc != np->active_tx_desc); -+ WARN_ON(np->txpackets != 0); -+ np->txpackets = 0; -+ -+ /* cleanup the rx-ring */ -+ for (i = 0; i < NBR_RX_DESC; i++) { -+ struct sk_buff *skb; -+ skb = np->dma_rx_descr_list[i].skb; -+ if (!skb -+ || (np->dma_rx_descr_list[i].descr.buf != -+ (void *)virt_to_phys(skb->data))) -+ { -+ printk("%s:%d: damaged rx-ring! " -+ "i=%d skb=%p %lx %lx %p %p\n", -+ __func__, __LINE__, i, -+ skb, -+ virt_to_phys(skb->data), -+ virt_to_phys(skb->data + MAX_MEDIA_DATA_SIZE), -+ np->dma_rx_descr_list[i].descr.buf, -+ np->dma_rx_descr_list[i].descr.after); -+ WARN_ON(1); -+ crisv32_ethernet_bug(dev); -+ if (skb) -+ dev_kfree_skb(skb); -+ skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE); -+ np->dma_rx_descr_list[i].skb = skb; -+ np->dma_rx_descr_list[i].descr.buf = -+ (char*)virt_to_phys(skb->data); -+ } -+ np->dma_rx_descr_list[i].descr.after = -+ (char*)virt_to_phys(skb->data -+ + MAX_MEDIA_DATA_SIZE); -+ np->dma_rx_descr_list[i].descr.eol = 0; -+ np->dma_rx_descr_list[i].descr.in_eop = 0; -+ /* Workaround cache bug */ -+ flush_dma_descr(&np->dma_rx_descr_list[i].descr, 1); -+ } -+ -+ /* reset rx-ring */ -+ np->active_rx_desc = &np->dma_rx_descr_list[0]; -+ np->prev_rx_desc = &np->dma_rx_descr_list[NBR_RX_DESC - 1]; -+ np->last_rx_desc = np->prev_rx_desc; -+ np->dma_rx_descr_list[NBR_RX_DESC - 1].descr.eol = 1; -+ -+ /* reset tx-ring */ -+ np->dma_tx_descr_list[0].descr.buf = -+ np->dma_tx_descr_list[0].descr.after = 0; -+ np->dma_rx_descr_list[i].descr.in_eop = 0; -+ np->dma_tx_descr_list[0].descr.eol = 1; -+ -+ np->active_tx_desc = &np->dma_tx_descr_list[0]; -+ np->prev_tx_desc = &np->dma_tx_descr_list[NBR_TX_DESC - 1]; -+ np->catch_tx_desc = &np->dma_tx_descr_list[0]; -+ -+ /* Fill context descriptors. */ -+ np->ctxt_in.next = 0; -+ np->ctxt_in.saved_data = -+ (void *)virt_to_phys(&np->active_rx_desc->descr); -+ np->ctxt_in.saved_data_buf = np->active_rx_desc->descr.buf; -+ -+ np->ctxt_out.next = 0; -+ np->ctxt_out.saved_data = -+ (void *)virt_to_phys(&np->dma_tx_descr_list[0].descr); -+} -+ -+static void __init -+crisv32_init_leds(int ledgrp, struct net_device* dev) -+{ -+ struct timer_list timer_init = TIMER_INITIALIZER(NULL, 0, 0); -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ /* Use already allocated led grp if initialized */ -+ if (crisv32_leds[ledgrp] != NULL) { -+ np->leds = crisv32_leds[ledgrp]; -+ return; -+ } -+ -+ crisv32_leds[ledgrp] = kmalloc(sizeof(struct crisv32_eth_leds),GFP_KERNEL); -+ -+ crisv32_leds[ledgrp]->ledgrp = ledgrp; -+ crisv32_leds[ledgrp]->led_active = 0; -+ /* NOTE: Should this value be set to zero as the jiffies timer can wrap? */ -+ crisv32_leds[ledgrp]->led_next_time = jiffies; -+ -+ crisv32_leds[ledgrp]->clear_led_timer = timer_init; -+ crisv32_leds[ledgrp]->clear_led_timer.function = crisv32_clear_network_leds; -+ crisv32_leds[ledgrp]->clear_led_timer.data = (unsigned long) dev; -+ -+ spin_lock_init(&crisv32_leds[ledgrp]->led_lock); -+ -+ np->leds = crisv32_leds[ledgrp]; -+} -+ -+static int __init -+crisv32_ethernet_init(void) -+{ -+ struct crisv32_ethernet_local *np; -+ int ret = 0; -+ -+ printk("ETRAX FS 10/100MBit ethernet v0.01 (c)" -+ " 2003 Axis Communications AB\n"); -+ -+#ifdef CONFIG_ETRAX_ETHERNET_IFACE0 -+{ -+ int iface0 = 0; -+ /* Default MAC address for interface 0. -+ * The real one will be set later. */ -+ static struct sockaddr default_mac_iface0 = -+ {0, {0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00}}; -+ -+ if (!(crisv32_dev[iface0] = alloc_etherdev(sizeof *np))) -+ return -ENOMEM; -+ -+ ret |= crisv32_ethernet_device_init(crisv32_dev[iface0]); -+ -+#if defined(CONFIG_ETRAX_ETH0_USE_LEDGRP0) -+ crisv32_init_leds(LED_GRP_0,crisv32_dev[iface0]); -+#elif defined(CONFIG_ETRAX_ETH0_USE_LEDGRP1) -+ crisv32_init_leds(LED_GRP_1,crisv32_dev[iface0]); -+#else -+ crisv32_init_leds(LED_GRP_NONE,crisv32_dev[iface0]); -+#endif -+ -+ np = (struct crisv32_ethernet_local *) crisv32_dev[iface0]->priv; -+ np->eth_inst = regi_eth0; -+ np->dma_out_inst = regi_dma0; -+ np->dma_in_inst = regi_dma1; -+ -+ register_netdev(crisv32_dev[iface0]); -+ -+ /* Set up default MAC address */ -+ memcpy(crisv32_dev[iface0]->dev_addr, default_mac_iface0.sa_data, 6); -+ crisv32_eth_set_mac_address(crisv32_dev[iface0], &default_mac_iface0); -+ if (crisv32_eth_request_irqdma(crisv32_dev[iface0])) -+ printk("%s: eth0 unable to allocate IRQ and DMA resources\n", -+ __func__); -+ np->txpackets = 0; -+ crisv32_eth_init_rings(crisv32_dev[iface0]); -+ crisv32_eth_setup_controller(crisv32_dev[iface0]); -+} -+#endif /* CONFIG_ETRAX_ETHERNET_IFACE0 */ -+ -+#ifdef CONFIG_ETRAX_ETHERNET_IFACE1 -+{ -+ int iface1 = 0; -+ /* Default MAC address for interface 1. -+ * The real one will be set later. */ -+ static struct sockaddr default_mac_iface1 = -+ {0, {0x00, 0x40, 0x8C, 0xCD, 0x00, 0x01}}; -+ -+ if (crisv32_pinmux_alloc_fixed(pinmux_eth1)) -+ panic("Eth pinmux\n"); -+ -+ /* Increase index to device array if interface 0 is enabled as well.*/ -+#ifdef CONFIG_ETRAX_ETHERNET_IFACE0 -+ iface1++; -+#endif -+ if (!(crisv32_dev[iface1] = alloc_etherdev(sizeof *np))) -+ return -ENOMEM; -+ -+ ret |= crisv32_ethernet_device_init(crisv32_dev[iface1]); -+ -+#if defined(CONFIG_ETRAX_ETH1_USE_LEDGRP0) -+ crisv32_init_leds(LED_GRP_0,crisv32_dev[iface1]); -+#elif defined(CONFIG_ETRAX_ETH1_USE_LEDGRP1) -+ crisv32_init_leds(LED_GRP_1,crisv32_dev[iface1]); -+#else -+ crisv32_init_leds(LED_GRP_NONE,crisv32_dev[iface1]); -+#endif -+ -+ np = (struct crisv32_ethernet_local *) crisv32_dev[iface1]->priv; -+ np->eth_inst = regi_eth1; -+ np->dma_out_inst = regi_dma6; -+ np->dma_in_inst = regi_dma7; -+ -+ register_netdev(crisv32_dev[iface1]); -+ -+ /* Set up default MAC address */ -+ memcpy(crisv32_dev[iface1]->dev_addr, default_mac_iface1.sa_data, 6); -+ crisv32_eth_set_mac_address(crisv32_dev[iface1], &default_mac_iface1); -+ -+ if (crisv32_eth_request_irqdma(crisv32_dev[iface1])) -+ printk("%s: eth1 unable to allocate IRQ and DMA resources\n", -+ __func__); -+ np->txpackets = 0; -+ crisv32_eth_init_rings(crisv32_dev[iface1]); -+ crisv32_eth_setup_controller(crisv32_dev[iface1]); -+} -+#endif /* CONFIG_ETRAX_ETHERNET_IFACE1 */ -+ -+#ifdef CONFIG_CPU_FREQ -+ cpufreq_register_notifier(&crisv32_ethernet_freq_notifier_block, -+ CPUFREQ_TRANSITION_NOTIFIER); -+#endif -+ -+ return ret; -+} -+ -+static int __init -+crisv32_ethernet_device_init(struct net_device* dev) -+{ -+ struct timer_list timer_init = TIMER_INITIALIZER(NULL, 0, 0); -+ struct crisv32_ethernet_local *np; -+ -+ dev->base_addr = 0; /* Just to have something to show. */ -+ -+ /* we do our own locking */ -+ dev->features |= NETIF_F_LLTX; -+ -+ /* We use several IRQs and DMAs so just report 0 here. */ -+ dev->irq = 0; -+ dev->dma = 0; -+ -+ /* -+ * Fill in our handlers so the network layer can talk to us in the -+ * future. -+ */ -+ dev->open = crisv32_eth_open; -+ dev->hard_start_xmit = crisv32_eth_send_packet; -+ dev->stop = crisv32_eth_close; -+ dev->get_stats = crisv32_get_stats; -+ dev->set_multicast_list = crisv32_eth_set_multicast_list; -+ dev->set_mac_address = crisv32_eth_set_mac_address; -+ dev->ethtool_ops = &crisv32_ethtool_ops; -+ dev->do_ioctl = crisv32_eth_ioctl; -+ dev->set_config = crisv32_eth_set_config; -+ dev->tx_timeout = crisv32_eth_tx_timeout; -+#ifdef CONFIG_NET_POLL_CONTROLLER -+ dev->poll_controller = crisv32_netpoll; -+#endif -+ -+ np = netdev_priv(dev); -+ -+ spin_lock_init(&np->lock); -+ spin_lock_init(&np->transceiver_lock); -+ -+ /* Initialize speed indicator stuff. */ -+ np->current_speed = 10; -+ np->current_speed_selection = 0; /* Auto. */ -+ np->speed_timer = timer_init; -+ np->speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; -+ np->speed_timer.data = (unsigned long) dev; -+ np->speed_timer.function = crisv32_eth_check_speed; -+ -+ np->full_duplex = 0; -+ np->current_duplex = autoneg; -+ np->duplex_timer = timer_init; -+ np->duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; -+ np->duplex_timer.data = (unsigned long) dev; -+ np->duplex_timer.function = crisv32_eth_check_duplex; -+ -+ return 0; -+} -+ -+static int -+crisv32_eth_open(struct net_device *dev) -+{ -+ struct sockaddr mac_addr; -+ reg_dma_rw_ack_intr ack_intr = { .data = 1,.in_eop = 1 }; -+ reg_dma_rw_cfg dma_cfg = { .en = 1 }; -+ reg_eth_rw_clr_err clr_err = {.clr = regk_eth_yes}; -+ int intr_mask_nw = 0x1cff; -+ int eth_ack_intr = 0xffff; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->lock); -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ np->gigabit_mode = 0; -+#endif -+ crisv32_disable_tx_ints(np); -+ crisv32_disable_rx_ints(np); -+ -+ REG_WR(eth, np->eth_inst, rw_clr_err, clr_err); -+ REG_WR_INT(eth, np->eth_inst, rw_ack_intr, eth_ack_intr); -+ REG_WR_INT(eth, np->eth_inst, rw_intr_mask, intr_mask_nw); -+ crisv32_eth_reset_rings(dev); -+ -+ /* Give the hardware an idea of what MAC address we want. */ -+ memcpy(mac_addr.sa_data, dev->dev_addr, dev->addr_len); -+ crisv32_eth_set_mac_address(dev, &mac_addr); -+ -+ /* Enable irq and make sure that the irqs are cleared. */ -+ REG_WR(dma, np->dma_out_inst, rw_ack_intr, ack_intr); -+ REG_WR(dma, np->dma_in_inst, rw_ack_intr, ack_intr); -+ -+ /* Prepare input DMA. */ -+ DMA_RESET(np->dma_in_inst); -+ DMA_ENABLE(np->dma_in_inst); -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ DMA_WR_CMD(np->dma_in_inst, regk_dma_set_w_size2); -+#endif -+ DMA_START_CONTEXT( np->dma_in_inst, virt_to_phys(&np->ctxt_in)); -+ DMA_CONTINUE(np->dma_in_inst); -+ crisv32_enable_rx_ints(np); -+ crisv32_start_receiver(np); -+ -+ /* Prepare output DMA. */ -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ DMA_WR_CMD(np->dma_out_inst, regk_dma_set_w_size4); -+#endif -+ REG_WR(dma, np->dma_out_inst, rw_cfg, dma_cfg); -+ netif_start_queue(dev); -+ crisv32_enable_tx_ints(np); -+ -+ /* Start duplex/speed timers */ -+ add_timer(&np->speed_timer); -+ add_timer(&np->duplex_timer); -+ -+ spin_unlock(&np->lock); -+ /* -+ * We are now ready to accept transmit requeusts from the queueing -+ * layer of the networking. -+ */ -+ netif_carrier_on(dev); -+ -+ return 0; -+} -+ -+static int -+crisv32_eth_close(struct net_device *dev) -+{ -+ reg_dma_rw_ack_intr ack_intr = {0}; -+ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ unsigned long flags; -+ -+ printk(KERN_INFO "Closing %s.\n", dev->name); -+ -+ /* stop the receiver before the DMA channels to avoid overruns. */ -+ crisv32_stop_receiver(np); -+ -+ spin_lock_irqsave(&np->lock, flags); -+ netif_stop_queue(dev); -+ -+ /* Reset the TX DMA in case it has hung on something. */ -+ DMA_RESET(np->dma_in_inst); -+ -+ /* Stop DMA */ -+ DMA_STOP(np->dma_in_inst); -+ DMA_STOP(np->dma_out_inst); -+ -+ /* Disable irq and make sure that the irqs are cleared. */ -+ crisv32_disable_tx_ints(np); -+ ack_intr.data = 1; -+ REG_WR(dma, np->dma_out_inst, rw_ack_intr, ack_intr); -+ -+ crisv32_disable_rx_ints(np); -+ ack_intr.in_eop = 1; -+ REG_WR(dma, np->dma_in_inst, rw_ack_intr, ack_intr); -+ -+ np->sender_started = 0; -+ spin_unlock_irqrestore(&np->lock, flags); -+ -+ /* Update the statistics. */ -+ update_rx_stats(np); -+ update_tx_stats(np); -+ -+ /* Stop speed/duplex timers */ -+ del_timer(&np->speed_timer); -+ del_timer(&np->duplex_timer); -+ -+ return 0; -+} -+ -+static int -+crisv32_eth_set_mac_address(struct net_device *dev, void *vpntr) -+{ -+ int i; -+ unsigned char *addr = ((struct sockaddr*)vpntr)->sa_data; -+ -+ reg_eth_rw_ma0_lo ma0_lo = -+ { addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24)}; -+ -+ reg_eth_rw_ma0_hi ma0_hi = { addr[4] | (addr[5] << 8) }; -+ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ /* Remember the address. */ -+ memcpy(dev->dev_addr, addr, dev->addr_len); -+ -+ /* -+ * Write the address to the hardware. -+ * Note the way the address is wrapped: -+ * ma0_l0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24); -+ * ma0_hi = a0_4 | (a0_5 << 8); -+ */ -+ REG_WR(eth, np->eth_inst, rw_ma0_lo, ma0_lo); -+ REG_WR(eth, np->eth_inst, rw_ma0_hi, ma0_hi); -+ -+ printk(KERN_INFO "%s: changed MAC to ", dev->name); -+ -+ for (i = 0; i < 5; i++) -+ printk("%02X:", dev->dev_addr[i]); -+ -+ printk("%02X\n", dev->dev_addr[i]); -+ -+ return 0; -+} -+ -+static irqreturn_t -+crisv32rx_eth_interrupt(int irq, void *dev_id) -+{ -+ reg_dma_r_masked_intr masked_in; -+ reg_dma_rw_cmd cmd = {0}; -+ reg_dma_rw_ack_intr ack_intr = {0}; -+ struct net_device *dev = (struct net_device *) dev_id; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ masked_in = REG_RD(dma, np->dma_in_inst, r_masked_intr); -+ -+ if (masked_in.in_eop) { -+ DEBUG(printk("EOP_IN interrupt\n")); -+ -+ /* Acknowledge input dma interrupt. */ -+ ack_intr.in_eop = 1; -+ REG_WR(dma, np->dma_in_inst, rw_ack_intr, ack_intr); -+ -+ np->new_rx_package = 1; -+ /* Check if complete packets were indeed received. */ -+ while (np->active_rx_desc->descr.in_eop == 1 -+ && np->new_rx_package) { -+ /* -+ * Take out the buffer and give it to the OS, then -+ * allocate a new buffer to put a packet in. -+ */ -+ crisv32_eth_receive_packet(dev); -+ -+ /* Update number of packets received. */ -+ np->stats.rx_packets++; -+ -+ /* Restarts input dma. */ -+ cmd.cont_data = 1; -+ REG_WR(dma, np->dma_in_inst, rw_cmd, cmd); -+ -+ /* Acknowledge input dma interrupt. */ -+ REG_WR(dma, np->dma_in_inst, rw_ack_intr, ack_intr); -+ } -+ } -+ return IRQ_HANDLED; -+} -+ -+static irqreturn_t -+crisv32tx_eth_interrupt(int irq, void *dev_id) -+{ -+ reg_dma_rw_stat stat; -+ dma_descr_data *dma_pos; -+ reg_dma_rw_ack_intr ack_intr = { .data = 1 }; -+ reg_dma_r_masked_intr masked_out; -+ -+ struct net_device *dev = (struct net_device *) dev_id; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ unsigned long flags; -+ -+ masked_out = REG_RD(dma, np->dma_out_inst, r_masked_intr); -+ -+ /* Get the current output dma position. */ -+ stat = REG_RD(dma, np->dma_out_inst, rw_stat); -+ if (stat.list_state == regk_dma_data_at_eol) -+ dma_pos = &np->active_tx_desc->descr; -+ else -+ dma_pos = phys_to_virt(REG_RD_INT(dma, np->dma_out_inst, -+ rw_data)); -+ -+ /* ack the interrupt */ -+ REG_WR(dma, np->dma_out_inst, rw_ack_intr, ack_intr); -+ -+ /* protect against ethernet excessive-col interrupts */ -+ spin_lock_irqsave(&np->lock, flags); -+ -+ /* Take care of transmited dma descriptors and report sent packet. */ -+ while (np->txpackets && ((&np->catch_tx_desc->descr != dma_pos) -+ || netif_queue_stopped(dev))) { -+ /* Update sent packet statistics. */ -+ np->stats.tx_bytes += np->catch_tx_desc->skb->len; -+ np->stats.tx_packets++; -+ -+ dev_kfree_skb_irq(np->catch_tx_desc->skb); -+ np->catch_tx_desc->skb = 0; -+ np->txpackets--; -+ np->catch_tx_desc = -+ phys_to_virt((int)np->catch_tx_desc->descr.next); -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ if (np->gigabit_mode) { -+ np->intmem_tx_buf_catch->free = 1; -+ np->intmem_tx_buf_catch = np->intmem_tx_buf_catch->next; -+ } -+#endif -+ netif_wake_queue(dev); -+ } -+ spin_unlock_irqrestore(&np->lock, flags); -+ return IRQ_HANDLED; -+} -+ -+ -+/* Update receive errors. */ -+static void -+update_rx_stats(struct crisv32_ethernet_local *np) -+{ -+ reg_eth_rs_rec_cnt r; -+ reg_eth_rs_phy_cnt rp; -+ -+ r = REG_RD(eth, np->eth_inst, rs_rec_cnt); -+ rp = REG_RD(eth, np->eth_inst, rs_phy_cnt); -+ -+ np->stats.rx_fifo_errors += r.congestion; -+ np->stats.rx_crc_errors += r.crc_err; -+ np->stats.rx_frame_errors += r.align_err; -+ np->stats.rx_length_errors += r.oversize; -+} -+ -+/* Update transmit errors. */ -+static void -+update_tx_stats(struct crisv32_ethernet_local *np) -+{ -+ reg_eth_rs_tr_cnt r; -+ -+ r = REG_RD(eth, np->eth_inst, rs_tr_cnt); -+ -+ np->stats.collisions += r.single_col + r.mult_col; -+ np->stats.tx_errors += r.deferred; -+} -+ -+/* Get current statistics. */ -+static struct net_device_stats * -+crisv32_get_stats(struct net_device *dev) -+{ -+ unsigned long flags; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ spin_lock_irqsave(&np->lock, flags); -+ -+ update_rx_stats(np); -+ update_tx_stats(np); -+ -+ spin_unlock_irqrestore(&np->lock, flags); -+ -+ return &np->stats; -+} -+ -+/* Check for network errors. This acknowledge the received interrupt. */ -+static irqreturn_t -+crisv32nw_eth_interrupt(int irq, void *dev_id) -+{ -+ struct net_device *dev = (struct net_device *) dev_id; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ reg_eth_r_masked_intr intr_mask; -+ int ack_intr = 0xffff; -+ reg_eth_rw_clr_err clr_err; -+ -+ intr_mask = REG_RD(eth, np->eth_inst, r_masked_intr); -+ -+ /* -+ * Check for underrun and/or excessive collisions. Note that the -+ * rw_clr_err register clears both underrun and excessive collision -+ * errors, so there's no need to check them separately. -+ */ -+ if (np->sender_started -+ && (intr_mask.urun || intr_mask.exc_col)) { -+ unsigned long flags; -+ dma_descr_data *dma_pos; -+ reg_dma_rw_stat stat; -+ -+ /* Get the current output dma position. */ -+ stat = REG_RD(dma, np->dma_out_inst, rw_stat); -+ if (stat.list_state == regk_dma_data_at_eol) -+ dma_pos = &np->active_tx_desc->descr; -+ else -+ dma_pos = phys_to_virt(REG_RD_INT(dma, -+ np->dma_out_inst, -+ rw_data)); -+ -+ /* -+ * Protect against the tx-interrupt messing with -+ * the tx-ring. -+ */ -+ spin_lock_irqsave(&np->lock, flags); -+ /* -+ * If we have more than one packet in the tx-ring -+ * drop one and move ahead. Upper layers rely on -+ * packeloss when doing congestion control. -+ */ -+ if (intr_mask.exc_col && np->txpackets > 1) { -+ dev_kfree_skb_irq(np->catch_tx_desc->skb); -+ np->catch_tx_desc->skb = 0; -+ np->catch_tx_desc = -+ phys_to_virt((int) -+ np->catch_tx_desc->descr.next); -+ np->txpackets--; -+ netif_wake_queue(dev); -+ } -+ np->ctxt_out.next = 0; -+ if (np->txpackets) { -+ np->ctxt_out.saved_data = (void *) -+ virt_to_phys(&np->catch_tx_desc->descr); -+ np->ctxt_out.saved_data_buf = -+ np->catch_tx_desc->descr.buf; -+ -+ /* restart the DMA */ -+ DMA_START_CONTEXT(np->dma_out_inst, -+ (int) virt_to_phys(&np->ctxt_out)); -+ } -+ else { -+ /* let the next packet restart the DMA */ -+ np->ctxt_out.saved_data = (void *) -+ virt_to_phys(&np->active_tx_desc->descr); -+ np->sender_started = 0; -+ } -+ -+ spin_unlock_irqrestore(&np->lock, flags); -+ np->stats.tx_errors++; -+ } -+ -+ REG_WR_INT(eth, np->eth_inst, rw_ack_intr, ack_intr); -+ clr_err.clr = 1; -+ REG_WR(eth, np->eth_inst, rw_clr_err, clr_err); -+ -+ update_rx_stats(np); -+ update_tx_stats(np); -+ -+ return IRQ_HANDLED; -+} -+ -+/* We have a good packet(s), get it/them out of the buffers. */ -+static void -+crisv32_eth_receive_packet(struct net_device *dev) -+{ -+ int length; -+ struct sk_buff *skb; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ struct sk_buff *tmp; -+ unsigned long flags; -+ -+ DEBUG(printk("crisv32_receive_packet\n")); -+ -+ /* Activate LED */ -+ spin_lock_irqsave(&np->leds->led_lock, flags); -+ if (!np->leds->led_active && time_after(jiffies, np->leds->led_next_time)) { -+ /* light the network leds depending on the current speed. */ -+ crisv32_set_network_leds(LED_ACTIVITY, dev); -+ -+ /* Set the earliest time we may clear the LED */ -+ np->leds->led_next_time = jiffies + NET_FLASH_TIME; -+ np->leds->led_active = 1; -+ np->leds->clear_led_timer.data = (unsigned long) dev; -+ mod_timer(&np->leds->clear_led_timer, jiffies + HZ/10); -+ } -+ spin_unlock_irqrestore(&np->leds->led_lock, flags); -+ -+ /* Discard CRC (4 bytes). */ -+ length = (np->active_rx_desc->descr.after) - -+ (np->active_rx_desc->descr.buf) - 4; -+ -+ /* Update received packet statistics. */ -+ np->stats.rx_bytes += length; -+ -+ if (np->active_rx_desc != np->last_rx_desc) { -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ if (np->gigabit_mode) { -+ skb = dev_alloc_skb(length); -+ if(!skb) { -+ np->stats.rx_errors++; -+ printk(KERN_NOTICE "%s: memory squeeze," -+ " dropping packet.", dev->name); -+ return; -+ } -+ /* Allocate room for the packet body. */ -+ skb_put(skb, length - ETHER_HEAD_LEN); -+ /* Allocate room for the header and copy the data to -+ * the SKB */ -+ memcpy(skb_push(skb, ETHER_HEAD_LEN), -+ crisv32_intmem_phys_to_virt((unsigned long)np->active_rx_desc->descr.buf), length); -+ skb->dev = dev; -+ skb->protocol = eth_type_trans(skb, dev); -+ skb->ip_summed = CHECKSUM_NONE; -+ /* Send the packet to the upper layer. */ -+ netif_rx(skb); -+ np->last_rx_desc = -+ (void *) phys_to_virt(np->last_rx_desc->descr.next); -+ } else { -+#endif -+ tmp = dev_alloc_skb(MAX_MEDIA_DATA_SIZE); -+ if (!tmp) { -+ np->stats.rx_errors++; -+ printk(KERN_NOTICE "%s: memory squeeze," -+ " dropping packet.", -+ dev->name); -+ return; -+ } -+ skb = np->active_rx_desc->skb; -+ np->active_rx_desc->skb = tmp; -+ skb_put(skb, length); -+ -+ np->active_rx_desc->descr.buf = -+ (void *) virt_to_phys(np->active_rx_desc->skb->data); -+ np->active_rx_desc->descr.after = -+ np->active_rx_desc->descr.buf + MAX_MEDIA_DATA_SIZE; -+ -+ skb->dev = dev; -+ skb->protocol = eth_type_trans(skb, dev); -+ skb->ip_summed = CHECKSUM_NONE; -+ -+ /* Send the packet to the upper layer. */ -+ netif_rx(skb); -+ np->last_rx_desc = -+ phys_to_virt((int) -+ np->last_rx_desc->descr.next); -+ } -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ } -+#endif -+ /* -+ * When the input DMA reaches eol precaution must be taken, otherwise -+ * the DMA could stop. The problem occurs if the eol flag is re-placed -+ * on the descriptor that the DMA stands on before the DMA proceed to -+ * the next descriptor. This case could, for example, happen if there -+ * is a traffic burst and then the network goes silent. To prevent this -+ * we make sure that we do not set the eol flag on the descriptor that -+ * the DMA stands on. -+ */ -+ if(virt_to_phys(&np->active_rx_desc->descr) != -+ REG_RD_INT(dma, np->dma_in_inst, rw_saved_data)) { -+ np->active_rx_desc->descr.after = -+ np->active_rx_desc->descr.buf + MAX_MEDIA_DATA_SIZE; -+ np->active_rx_desc->descr.eol = 1; -+ np->active_rx_desc->descr.in_eop = 0; -+ np->active_rx_desc = -+ phys_to_virt((int)np->active_rx_desc->descr.next); -+ barrier(); -+ np->prev_rx_desc->descr.eol = 0; -+ flush_dma_descr(&np->prev_rx_desc->descr, 0); // Workaround cache bug -+ np->prev_rx_desc = -+ phys_to_virt((int)np->prev_rx_desc->descr.next); -+ flush_dma_descr(&np->prev_rx_desc->descr, 1); // Workaround cache bug -+ } else { -+ np->new_rx_package = 0; -+ } -+} -+ -+/* -+ * This function (i.e. hard_start_xmit) is protected from concurent calls by a -+ * spinlock (xmit_lock) in the net_device structure. -+ */ -+static int -+crisv32_eth_send_packet(struct sk_buff *skb, struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ unsigned char *buf = skb->data; -+ unsigned long flags; -+ -+ dev->trans_start = jiffies; -+ -+ spin_lock_irqsave(&np->leds->led_lock, flags); -+ if (!np->leds->led_active && time_after(jiffies, np->leds->led_next_time)) { -+ /* light the network leds depending on the current speed. */ -+ crisv32_set_network_leds(LED_ACTIVITY, dev); -+ -+ /* Set the earliest time we may clear the LED */ -+ np->leds->led_next_time = jiffies + NET_FLASH_TIME; -+ np->leds->led_active = 1; -+ np->leds->clear_led_timer.data = (unsigned long) dev; -+ mod_timer(&np->leds->clear_led_timer, jiffies + HZ/10); -+ } -+ spin_unlock_irqrestore(&np->leds->led_lock, flags); -+ -+ /* -+ * Need to disable irq to avoid updating pointer in interrupt while -+ * sending packets. -+ */ -+ spin_lock_irqsave(&np->lock, flags); -+ -+ np->active_tx_desc->skb = skb; -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ if (np->gigabit_mode) { -+ if(np->intmem_tx_buf_active->free) { -+ memcpy(np->intmem_tx_buf_active->buf, -+ skb->data, skb->len); -+ np->intmem_tx_buf_active->free = 0; -+ crisv32_eth_hw_send_packet( -+ np->intmem_tx_buf_active->buf, skb->len, np); -+ np->intmem_tx_buf_active = -+ np->intmem_tx_buf_active->next; -+ } else { -+ printk("%s: Internal tx memory buffer not free!\n\r", -+ __FILE__); -+ spin_unlock_irqrestore(&np->lock, flags); -+ return 1; -+ } -+ } -+ else -+#endif -+ { -+ crisv32_eth_hw_send_packet(buf, skb->len, np); -+ } -+ /* Stop queue if full. */ -+ if (np->active_tx_desc == np->catch_tx_desc) -+ netif_stop_queue(dev); -+ -+ np->txpackets++; -+ spin_unlock_irqrestore(&np->lock, flags); -+ -+ return 0; -+} -+ -+ -+static void -+crisv32_eth_hw_send_packet(unsigned char *buf, int length, void *priv) -+{ -+ struct crisv32_ethernet_local *np = -+ (struct crisv32_ethernet_local *) priv; -+ -+ /* Configure the tx dma descriptor. */ -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ if (np->gigabit_mode) { -+ np->active_tx_desc->descr.buf = (unsigned char *) crisv32_intmem_virt_to_phys(buf); -+ } else -+#endif -+ { -+ np->active_tx_desc->descr.buf = (unsigned char *) virt_to_phys(buf); -+ } -+ -+ np->active_tx_desc->descr.after = np->active_tx_desc->descr.buf + -+ length; -+ np->active_tx_desc->descr.intr = 1; -+ np->active_tx_desc->descr.out_eop = 1; -+ -+ /* Move eol. */ -+ np->active_tx_desc->descr.eol = 1; -+ np->prev_tx_desc->descr.eol = 0; -+ -+ -+ /* Update pointers. */ -+ np->prev_tx_desc = np->active_tx_desc; -+ np->active_tx_desc = phys_to_virt((int)np->active_tx_desc->descr.next); -+ -+ /* Start DMA. */ -+ crisv32_start_dma_out(np); -+} -+ -+static void -+crisv32_start_dma_out(struct crisv32_ethernet_local* np) -+{ -+ if (!np->sender_started) { -+ /* Start DMA for the first time. */ -+ np->ctxt_out.saved_data_buf = np->prev_tx_desc->descr.buf; -+ REG_WR(dma, np->dma_out_inst, rw_group_down, -+ (int) virt_to_phys(&np->ctxt_out)); -+ DMA_WR_CMD(np->dma_out_inst, regk_dma_load_c); -+ DMA_WR_CMD(np->dma_out_inst, regk_dma_load_d | regk_dma_burst); -+ np->sender_started = 1; -+ } else { -+ DMA_CONTINUE_DATA(np->dma_out_inst); -+ } -+} -+ -+/* -+ * Called by upper layers if they decide it took too long to complete sending -+ * a packet - we need to reset and stuff. -+ */ -+static void -+crisv32_eth_tx_timeout(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ reg_dma_rw_cfg cfg = {0}; -+ reg_dma_rw_stat stat = {0}; -+ unsigned long flags; -+ -+ printk(KERN_WARNING "%s: transmit timed out\n", dev->name); -+ -+ -+ spin_lock_irqsave(&np->lock, flags); -+ crisv32_ethernet_bug(dev); -+ -+ np->txpackets = 0; -+ /* Update error stats. */ -+ np->stats.tx_errors++; -+ -+ /* Reset the TX DMA in case it has hung on something. */ -+ cfg.en = 0; -+ REG_WR(dma, np->dma_out_inst, rw_cfg, cfg); -+ -+ do { -+ stat = REG_RD(dma, np->dma_out_inst, rw_stat); -+ } while (stat.mode != regk_dma_rst); -+ -+ /* Reset the tranceiver. */ -+ crisv32_eth_reset_tranceiver(dev); -+ -+ /* Get rid of the packets that never got an interrupt. */ -+ do { -+ if (np->catch_tx_desc->skb) -+ dev_kfree_skb(np->catch_tx_desc->skb); -+ -+ np->catch_tx_desc->skb = 0; -+ np->catch_tx_desc = -+ phys_to_virt((int)np->catch_tx_desc->descr.next); -+ } while (np->catch_tx_desc != np->active_tx_desc); -+ -+ -+ /* Start output DMA. */ -+ REG_WR(dma, np->dma_out_inst, rw_group_down, -+ (int) virt_to_phys(&np->ctxt_out)); -+ DMA_WR_CMD(np->dma_out_inst, regk_dma_load_c); -+ DMA_WR_CMD(np->dma_out_inst, regk_dma_load_d | regk_dma_burst); -+ spin_unlock_irqrestore(&np->lock, flags); -+ -+ /* Tell the upper layers we're ok again. */ -+ netif_wake_queue(dev); -+} -+ -+/* -+ * Set or clear the multicast filter for this adaptor. -+ * num_addrs == -1 Promiscuous mode, receive all packets -+ * num_addrs == 0 Normal mode, clear multicast list -+ * num_addrs > 0 Multicast mode, receive normal and MC packets, -+ * and do best-effort filtering. -+ */ -+static void -+crisv32_eth_set_multicast_list(struct net_device *dev) -+{ -+ int num_addr = dev->mc_count; -+ unsigned long int lo_bits; -+ unsigned long int hi_bits; -+ reg_eth_rw_rec_ctrl rec_ctrl = {0}; -+ reg_eth_rw_ga_lo ga_lo = {0}; -+ reg_eth_rw_ga_hi ga_hi = {0}; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ if (dev->flags & IFF_PROMISC) { -+ /* Promiscuous mode. */ -+ lo_bits = 0xfffffffful; -+ hi_bits = 0xfffffffful; -+ -+ /* Enable individual receive. */ -+ rec_ctrl = (reg_eth_rw_rec_ctrl) REG_RD(eth, np->eth_inst, -+ rw_rec_ctrl); -+ rec_ctrl.individual = regk_eth_yes; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+ } else if (dev->flags & IFF_ALLMULTI) { -+ /* Enable all multicasts. */ -+ lo_bits = 0xfffffffful; -+ hi_bits = 0xfffffffful; -+ -+ /* Disable individual receive */ -+ rec_ctrl = -+ (reg_eth_rw_rec_ctrl) REG_RD(eth, np->eth_inst, rw_rec_ctrl); -+ rec_ctrl.individual = regk_eth_no; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+ } else if (num_addr == 0) { -+ /* Normal, clear the mc list. */ -+ lo_bits = 0x00000000ul; -+ hi_bits = 0x00000000ul; -+ -+ /* Disable individual receive */ -+ rec_ctrl = -+ (reg_eth_rw_rec_ctrl) REG_RD(eth, np->eth_inst, rw_rec_ctrl); -+ rec_ctrl.individual = regk_eth_no; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+ } else { -+ /* MC mode, receive normal and MC packets. */ -+ char hash_ix; -+ struct dev_mc_list *dmi = dev->mc_list; -+ int i; -+ char *baddr; -+ lo_bits = 0x00000000ul; -+ hi_bits = 0x00000000ul; -+ -+ for (i = 0; i < num_addr; i++) { -+ /* Calculate the hash index for the GA registers. */ -+ hash_ix = 0; -+ baddr = dmi->dmi_addr; -+ hash_ix ^= (*baddr) & 0x3f; -+ hash_ix ^= ((*baddr) >> 6) & 0x03; -+ ++baddr; -+ hash_ix ^= ((*baddr) << 2) & 0x03c; -+ hash_ix ^= ((*baddr) >> 4) & 0xf; -+ ++baddr; -+ hash_ix ^= ((*baddr) << 4) & 0x30; -+ hash_ix ^= ((*baddr) >> 2) & 0x3f; -+ ++baddr; -+ hash_ix ^= (*baddr) & 0x3f; -+ hash_ix ^= ((*baddr) >> 6) & 0x03; -+ ++baddr; -+ hash_ix ^= ((*baddr) << 2) & 0x03c; -+ hash_ix ^= ((*baddr) >> 4) & 0xf; -+ ++baddr; -+ hash_ix ^= ((*baddr) << 4) & 0x30; -+ hash_ix ^= ((*baddr) >> 2) & 0x3f; -+ -+ hash_ix &= 0x3f; -+ -+ if (hash_ix > 32) -+ hi_bits |= (1 << (hash_ix - 32)); -+ else -+ lo_bits |= (1 << hash_ix); -+ -+ dmi = dmi->next; -+ } -+ -+ /* Disable individual receive. */ -+ rec_ctrl = -+ (reg_eth_rw_rec_ctrl) REG_RD(eth, np->eth_inst, rw_rec_ctrl); -+ rec_ctrl.individual = regk_eth_no; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+ } -+ -+ ga_lo.tbl = (unsigned int) lo_bits; -+ ga_hi.tbl = (unsigned int) hi_bits; -+ -+ REG_WR(eth, np->eth_inst, rw_ga_lo, ga_lo); -+ REG_WR(eth, np->eth_inst, rw_ga_hi, ga_hi); -+} -+ -+static int -+crisv32_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -+{ -+ struct mii_ioctl_data *data = if_mii(ifr); -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ int old_autoneg; -+ -+ spin_lock(&np->lock); /* Preempt protection */ -+ switch (cmd) { -+ case SIOCGMIIPHY: /* Get PHY address */ -+ data->phy_id = np->mdio_phy_addr; -+ break; -+ case SIOCGMIIREG: /* Read MII register */ -+ data->val_out = crisv32_eth_get_mdio_reg(dev, -+ data->reg_num); -+ break; -+ case SIOCSMIIREG: /* Write MII register */ -+ crisv32_eth_set_mdio_reg(dev, data->reg_num, -+ data->val_in); -+ break; -+ case SET_ETH_ENABLE_LEDS: -+ use_network_leds = 1; -+ break; -+ case SET_ETH_DISABLE_LEDS: -+ use_network_leds = 0; -+ break; -+ case SET_ETH_AUTONEG: -+ old_autoneg = autoneg_normal; -+ autoneg_normal = *(int*)data; -+ if (autoneg_normal != old_autoneg) -+ crisv32_eth_negotiate(dev); -+ break; -+ default: -+ spin_unlock(&np->lock); /* Preempt protection */ -+ return -EINVAL; -+ } -+ spin_unlock(&np->lock); -+ return 0; -+} -+ -+static int crisv32_eth_get_settings(struct net_device *dev, -+ struct ethtool_cmd *ecmd) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ /* What about GMII and 1000xpause? not included in ethtool.h */ -+ ecmd->supported = SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII | -+ SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | -+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ ecmd->supported |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; -+#endif -+ ecmd->port = PORT_TP; -+ ecmd->transceiver = XCVR_EXTERNAL; -+ ecmd->phy_address = np->mdio_phy_addr; -+ ecmd->speed = np->current_speed; -+ ecmd->duplex = np->full_duplex; -+ ecmd->advertising = ADVERTISED_TP; -+ -+ if (np->current_duplex == autoneg && np->current_speed_selection == 0) -+ ecmd->advertising |= ADVERTISED_Autoneg; -+ else { -+ ecmd->advertising |= -+ ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | -+ ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ ecmd->advertising |= ADVERTISED_1000baseT_Half | -+ ADVERTISED_1000baseT_Full; -+#endif -+ if (np->current_speed_selection == 10) -+ ecmd->advertising &= ~(ADVERTISED_100baseT_Half | -+ ADVERTISED_100baseT_Full | -+ ADVERTISED_1000baseT_Half | -+ ADVERTISED_1000baseT_Full); -+ -+ else if (np->current_speed_selection == 100) -+ ecmd->advertising &= ~(ADVERTISED_10baseT_Half | -+ ADVERTISED_10baseT_Full | -+ ADVERTISED_1000baseT_Half | -+ ADVERTISED_1000baseT_Full); -+ -+ else if (np->current_speed_selection == 1000) -+ ecmd->advertising &= ~(ADVERTISED_10baseT_Half | -+ ADVERTISED_10baseT_Full | -+ ADVERTISED_100baseT_Half | -+ ADVERTISED_100baseT_Full); -+ -+ if (np->current_duplex == half) -+ ecmd->advertising &= ~(ADVERTISED_10baseT_Full | -+ ADVERTISED_100baseT_Full | -+ ADVERTISED_1000baseT_Full); -+ else if (np->current_duplex == full) -+ ecmd->advertising &= ~(ADVERTISED_10baseT_Half | -+ ADVERTISED_100baseT_Half | -+ ADVERTISED_1000baseT_Half); -+ } -+ -+ ecmd->autoneg = AUTONEG_ENABLE; -+ return 0; -+} -+ -+static int crisv32_eth_set_settings(struct net_device *dev, -+ struct ethtool_cmd *ecmd) -+{ -+ if (ecmd->autoneg == AUTONEG_ENABLE) { -+ crisv32_eth_set_duplex(dev, autoneg); -+ crisv32_eth_set_speed(dev, 0); -+ } else { -+ crisv32_eth_set_duplex(dev, ecmd->duplex); -+ crisv32_eth_set_speed(dev, ecmd->speed); -+ } -+ -+ return 0; -+} -+ -+static void crisv32_eth_get_drvinfo(struct net_device *dev, -+ struct ethtool_drvinfo *info) -+{ -+ strncpy(info->driver, "ETRAX FS", sizeof(info->driver) - 1); -+ strncpy(info->version, "$Revision: 1.96 $", sizeof(info->version) - 1); -+ strncpy(info->fw_version, "N/A", sizeof(info->fw_version) - 1); -+ strncpy(info->bus_info, "N/A", sizeof(info->bus_info) - 1); -+} -+ -+static int crisv32_eth_nway_reset(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ if (np->current_duplex == autoneg && np->current_speed_selection == 0) -+ crisv32_eth_negotiate(dev); -+ return 0; -+} -+ -+static struct ethtool_ops crisv32_ethtool_ops = { -+ .get_settings = crisv32_eth_get_settings, -+ .set_settings = crisv32_eth_set_settings, -+ .get_drvinfo = crisv32_eth_get_drvinfo, -+ .nway_reset = crisv32_eth_nway_reset, -+ .get_link = ethtool_op_get_link, -+}; -+ -+/* Is this function really needed? Use ethtool instead? */ -+static int -+crisv32_eth_set_config(struct net_device *dev, struct ifmap *map) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->lock); /* Preempt protection */ -+ -+ switch(map->port) { -+ case IF_PORT_UNKNOWN: -+ /* Use autoneg */ -+ crisv32_eth_set_speed(dev, 0); -+ crisv32_eth_set_duplex(dev, autoneg); -+ break; -+ case IF_PORT_10BASET: -+ crisv32_eth_set_speed(dev, 10); -+ crisv32_eth_set_duplex(dev, autoneg); -+ break; -+ case IF_PORT_100BASET: -+ case IF_PORT_100BASETX: -+ crisv32_eth_set_speed(dev, 100); -+ crisv32_eth_set_duplex(dev, autoneg); -+ break; -+ case IF_PORT_100BASEFX: -+ case IF_PORT_10BASE2: -+ case IF_PORT_AUI: -+ spin_unlock(&np->lock); -+ return -EOPNOTSUPP; -+ break; -+ default: -+ printk(KERN_ERR "%s: Invalid media selected", -+ dev->name); -+ spin_unlock(&np->lock); -+ return -EINVAL; -+ } -+ spin_unlock(&np->lock); -+ return 0; -+} -+ -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+/* -+ * Switch the behaviour of the tx and rx buffers using -+ * external or internal memory. Usage of the internal -+ * memory is required for gigabit operation. -+ */ -+static void -+crisv32_eth_switch_intmem_usage(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ int i; -+ reg_dma_rw_stat stat; -+ reg_dma_rw_cfg cfg = {0}; -+ reg_dma_rw_intr_mask intr_mask_in = { .in_eop = regk_dma_yes }; -+ reg_dma_rw_ack_intr ack_intr = { .data = 1,.in_eop = 1 }; -+ unsigned char *intmem_tmp; -+ -+ /* Notify the kernel that the interface has stopped */ -+ netif_stop_queue(dev); -+ -+ /* Stop the receiver DMA */ -+ cfg.en = regk_dma_no; -+ REG_WR(dma, np->dma_in_inst, rw_cfg, cfg); -+ -+ if (!(np->gigabit_mode)) { -+ /* deallocate SKBs in rx_desc */ -+ for (i = 0; i < NBR_RX_DESC; i++) -+ dev_kfree_skb(np->dma_rx_descr_list[i].skb); -+ -+ /* Init TX*/ -+ for(i=0; i < NBR_INTMEM_TX_BUF; i++) { -+ /* Allocate internal memory */ -+ intmem_tmp = NULL; -+ intmem_tmp = crisv32_intmem_alloc(MAX_MEDIA_DATA_SIZE, -+ 32); -+ /* Check that we really got the memory */ -+ if (intmem_tmp == NULL) { -+ printk(KERN_ERR "%s: Can't allocate intmem for" -+ " RX buffer nbr: %d\n", dev->name, i); -+ return; -+ } -+ /* Setup the list entry */ -+ np->tx_intmem_buf_list[i].free = 1; -+ np->tx_intmem_buf_list[i].buf = intmem_tmp; -+ np->tx_intmem_buf_list[i].next = &np->tx_intmem_buf_list[i + 1]; -+ } -+ /* Setup the last list entry */ -+ np->tx_intmem_buf_list[NBR_INTMEM_TX_BUF - 1].next = &np->tx_intmem_buf_list[0]; -+ /* Setup initial pointer */ -+ np->intmem_tx_buf_active = np->tx_intmem_buf_list; -+ np->intmem_tx_buf_catch = np->tx_intmem_buf_list; -+ -+ /* Init RX */ -+ for (i=0; i < NBR_INTMEM_RX_DESC; i++) { -+ /* Allocate internal memory */ -+ intmem_tmp = NULL; -+ intmem_tmp = crisv32_intmem_alloc(MAX_MEDIA_DATA_SIZE, 32); -+ /* Check that we really got the memory */ -+ if (intmem_tmp == NULL) { -+ printk(KERN_ERR "%s: Can't allocate intmem for" -+ " desc nbr: %d\n", dev->name, i); -+ return; -+ } -+ /* Setup the descriptors*/ -+ np->dma_rx_descr_list[i].skb = NULL; -+ np->dma_rx_descr_list[i].descr.buf = -+ (void *) crisv32_intmem_virt_to_phys(intmem_tmp); -+ np->dma_rx_descr_list[i].descr.after = -+ (void *) crisv32_intmem_virt_to_phys(intmem_tmp + MAX_MEDIA_DATA_SIZE); -+ np->dma_rx_descr_list[i].descr.eol = 0; -+ np->dma_rx_descr_list[i].descr.in_eop = 0; -+ np->dma_rx_descr_list[i].descr.next = -+ (void *) virt_to_phys(&np->dma_rx_descr_list[i+1].descr); -+ } -+ /* Setup the last rx descriptor */ -+ np->dma_rx_descr_list[NBR_INTMEM_RX_DESC - 1].descr.eol = 1; -+ np->dma_rx_descr_list[NBR_INTMEM_RX_DESC - 1].descr.next = -+ (void*) virt_to_phys(&np->dma_rx_descr_list[0].descr); -+ /* Initialise initial receive pointers. */ -+ np->active_rx_desc = &np->dma_rx_descr_list[0]; -+ np->prev_rx_desc = &np->dma_rx_descr_list[NBR_INTMEM_RX_DESC - 1]; -+ np->last_rx_desc = np->prev_rx_desc; -+ -+ np->gigabit_mode = 1; -+ } else { -+ /* dealloc TX intmem */ -+ for(i=0; i < NBR_INTMEM_TX_BUF; i++) -+ crisv32_intmem_free(np->tx_intmem_buf_list[i].buf); -+ -+ /* dealloc RX intmem */ -+ for (i=0; i < NBR_INTMEM_RX_DESC; i++) -+ crisv32_intmem_free(crisv32_intmem_phys_to_virt((unsigned long)np->dma_rx_descr_list[i].descr.buf)); -+ -+ /* Setup new rx_desc and alloc SKBs */ -+ for (i = 0; i < NBR_RX_DESC; i++) { -+ struct sk_buff *skb; -+ -+ skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE); -+ np->dma_rx_descr_list[i].skb = skb; -+ np->dma_rx_descr_list[i].descr.buf = -+ (char*)virt_to_phys(skb->data); -+ np->dma_rx_descr_list[i].descr.after = -+ (char*)virt_to_phys(skb->data + MAX_MEDIA_DATA_SIZE); -+ -+ np->dma_rx_descr_list[i].descr.eol = 0; -+ np->dma_rx_descr_list[i].descr.in_eop = 0; -+ np->dma_rx_descr_list[i].descr.next = -+ (void *) virt_to_phys(&np->dma_rx_descr_list[i + 1].descr); -+ } -+ -+ np->dma_rx_descr_list[NBR_RX_DESC - 1].descr.eol = 1; -+ np->dma_rx_descr_list[NBR_RX_DESC - 1].descr.next = -+ (void *) virt_to_phys(&np->dma_rx_descr_list[0].descr); -+ -+ /* Initialise initial receive pointers. */ -+ np->active_rx_desc = &np->dma_rx_descr_list[0]; -+ np->prev_rx_desc = &np->dma_rx_descr_list[NBR_RX_DESC - 1]; -+ np->last_rx_desc = np->prev_rx_desc; -+ -+ np->gigabit_mode = 0; -+ } -+ -+ /* Fill context descriptors. */ -+ np->ctxt_in.next = 0; -+ np->ctxt_in.saved_data = -+ (dma_descr_data *) virt_to_phys(&np->dma_rx_descr_list[0].descr); -+ np->ctxt_in.saved_data_buf = np->dma_rx_descr_list[0].descr.buf; -+ -+ /* Enable irq and make sure that the irqs are cleared. */ -+ REG_WR(dma, np->dma_in_inst, rw_intr_mask, intr_mask_in); -+ REG_WR(dma, np->dma_in_inst, rw_ack_intr, ack_intr); -+ -+ /* Start input dma */ -+ cfg.en = regk_dma_yes; -+ REG_WR(dma, np->dma_in_inst, rw_cfg, cfg); -+ REG_WR(dma, np->dma_in_inst, rw_group_down, -+ (int) virt_to_phys(&np->ctxt_in)); -+ -+ DMA_WR_CMD(np->dma_in_inst, regk_dma_load_c); -+ DMA_WR_CMD(np->dma_in_inst, regk_dma_load_d | regk_dma_burst); -+ -+ netif_wake_queue(dev); -+ -+ stat = REG_RD(dma, np->dma_in_inst, rw_stat); -+} -+#endif -+ -+static void -+crisv32_eth_negotiate(struct net_device *dev) -+{ -+ unsigned short data = -+ crisv32_eth_get_mdio_reg(dev, MII_ADVERTISE); -+ unsigned short ctrl1000 = -+ crisv32_eth_get_mdio_reg(dev, MII_CTRL1000); -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ /* Make all capabilities available */ -+ data |= ADVERTISE_10HALF | ADVERTISE_10FULL | -+ ADVERTISE_100HALF | ADVERTISE_100FULL; -+ ctrl1000 |= ADVERTISE_1000HALF | ADVERTISE_1000FULL; -+ -+ /* Remove the speed capabilities that we that do not want */ -+ switch (np->current_speed_selection) { -+ case 10 : -+ data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL); -+ ctrl1000 &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL); -+ break; -+ case 100 : -+ data &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL); -+ ctrl1000 &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL); -+ break; -+ case 1000 : -+ data &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL | -+ ADVERTISE_100HALF | ADVERTISE_100FULL); -+ break; -+ } -+ -+ /* Remove the duplex capabilites that we do not want */ -+ if (np->current_duplex == full) { -+ data &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF); -+ ctrl1000 &= ~(ADVERTISE_1000HALF); -+ } -+ else if (np->current_duplex == half) { -+ data &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL); -+ ctrl1000 &= ~(ADVERTISE_1000FULL); -+ } -+ -+ crisv32_eth_set_mdio_reg(dev, MII_ADVERTISE, data); -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ crisv32_eth_set_mdio_reg(dev, MII_CTRL1000, ctrl1000); -+#endif -+ -+ /* Renegotiate with link partner */ -+ if (autoneg_normal) { -+ data = crisv32_eth_get_mdio_reg(dev, MII_BMCR); -+ data |= BMCR_ANENABLE | BMCR_ANRESTART; -+ } -+ crisv32_eth_set_mdio_reg(dev, MII_BMCR, data); -+} -+static void -+crisv32_eth_check_speed(unsigned long idev) -+{ -+ static int led_initiated = 0; -+ struct net_device *dev = (struct net_device *) idev; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ unsigned long data; -+ int old_speed; -+ unsigned long flags; -+ -+ BUG_ON(!np); -+ BUG_ON(!np->transceiver); -+ -+ spin_lock(&np->transceiver_lock); -+ -+ old_speed = np->current_speed; -+ data = crisv32_eth_get_mdio_reg(dev, MII_BMSR); -+ -+ if (!(data & BMSR_LSTATUS)) -+ np->current_speed = 0; -+ else -+ np->transceiver->check_speed(dev); -+ -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ if ((old_speed != np->current_speed) -+ && ((old_speed == 1000) || (np->current_speed == 1000))) { -+ /* Switch between mii and gmii */ -+ reg_eth_rw_gen_ctrl gen_ctrl = REG_RD(eth, np->eth_inst, -+ rw_gen_ctrl); -+ reg_eth_rw_tr_ctrl tr_ctrl = REG_RD(eth, np->eth_inst, -+ rw_tr_ctrl); -+ if (old_speed == 1000) { -+ gen_ctrl.phy = regk_eth_mii; -+ gen_ctrl.gtxclk_out = regk_eth_no; -+ tr_ctrl.carrier_ext = regk_eth_no; -+ } -+ else { -+ gen_ctrl.phy = regk_eth_gmii; -+ gen_ctrl.gtxclk_out = regk_eth_yes; -+ tr_ctrl.carrier_ext = regk_eth_yes; -+ } -+ REG_WR(eth, np->eth_inst, rw_tr_ctrl, tr_ctrl); -+ REG_WR(eth, np->eth_inst, rw_gen_ctrl, gen_ctrl); -+ -+ crisv32_eth_switch_intmem_usage(dev); -+ } -+#endif -+ -+ spin_lock_irqsave(&np->leds->led_lock, flags); -+ if ((old_speed != np->current_speed) || !led_initiated) { -+ led_initiated = 1; -+ np->leds->clear_led_timer.data = (unsigned long) dev; -+ if (np->current_speed) { -+ netif_carrier_on(dev); -+ crisv32_set_network_leds(LED_LINK, dev); -+ } else { -+ netif_carrier_off(dev); -+ crisv32_set_network_leds(LED_NOLINK, dev); -+ } -+ } -+ spin_unlock_irqrestore(&np->leds->led_lock, flags); -+ -+ /* Reinitialize the timer. */ -+ np->speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; -+ add_timer(&np->speed_timer); -+ -+ spin_unlock(&np->transceiver_lock); -+} -+ -+static void -+crisv32_eth_set_speed(struct net_device *dev, unsigned long speed) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ spin_lock(&np->transceiver_lock); -+ if (np->current_speed_selection != speed) { -+ np->current_speed_selection = speed; -+ crisv32_eth_negotiate(dev); -+ } -+ spin_unlock(&np->transceiver_lock); -+} -+ -+static void -+crisv32_eth_check_duplex(unsigned long idev) -+{ -+ struct net_device *dev = (struct net_device *) idev; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ reg_eth_rw_rec_ctrl rec_ctrl; -+ int old_duplex = np->full_duplex; -+ -+ np->transceiver->check_duplex(dev); -+ -+ if (old_duplex != np->full_duplex) { -+ /* Duplex changed. */ -+ rec_ctrl = (reg_eth_rw_rec_ctrl) REG_RD(eth, np->eth_inst, -+ rw_rec_ctrl); -+ rec_ctrl.duplex = np->full_duplex; -+ REG_WR(eth, np->eth_inst, rw_rec_ctrl, rec_ctrl); -+ } -+ -+ /* Reinitialize the timer. */ -+ np->duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; -+ add_timer(&np->duplex_timer); -+} -+ -+static void -+crisv32_eth_set_duplex(struct net_device *dev, enum duplex new_duplex) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ spin_lock(&np->transceiver_lock); -+ if (np->current_duplex != new_duplex) { -+ np->current_duplex = new_duplex; -+ crisv32_eth_negotiate(dev); -+ } -+ spin_unlock(&np->transceiver_lock); -+} -+ -+static int -+crisv32_eth_probe_transceiver(struct net_device *dev) -+{ -+ unsigned int phyid_high; -+ unsigned int phyid_low; -+ unsigned int oui; -+ struct transceiver_ops *ops = NULL; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ /* Probe MDIO physical address. */ -+ for (np->mdio_phy_addr = 0; -+ np->mdio_phy_addr <= 31; np->mdio_phy_addr++) { -+ if (crisv32_eth_get_mdio_reg(dev, MII_BMSR) != 0xffff) -+ break; -+ } -+ -+ if (np->mdio_phy_addr == 32) -+ return -ENODEV; -+ -+ /* Get manufacturer. */ -+ phyid_high = crisv32_eth_get_mdio_reg(dev, MII_PHYSID1); -+ phyid_low = crisv32_eth_get_mdio_reg(dev, MII_PHYSID2); -+ -+ oui = (phyid_high << 6) | (phyid_low >> 10); -+ -+ for (ops = &transceivers[0]; ops->oui; ops++) { -+ if (ops->oui == oui) -+ break; -+ } -+ -+ np->transceiver = ops; -+ return 0; -+} -+ -+static void -+generic_check_speed(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MII_ADVERTISE); -+ if ((data & ADVERTISE_100FULL) || -+ (data & ADVERTISE_100HALF)) -+ np->current_speed = 100; -+ else -+ np->current_speed = 10; -+} -+ -+static void -+generic_check_duplex(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MII_ADVERTISE); -+ if ((data & ADVERTISE_10FULL) || -+ (data & ADVERTISE_100FULL)) -+ np->full_duplex = 1; -+ else -+ np->full_duplex = 0; -+} -+ -+static void -+broadcom_check_speed(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_AUX_CTRL_STATUS_REG); -+ np->current_speed = (data & MDIO_BC_SPEED ? 100 : 10); -+} -+ -+static void -+broadcom_check_duplex(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_AUX_CTRL_STATUS_REG); -+ np->full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; -+} -+ -+static void -+tdk_check_speed(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_TDK_DIAGNOSTIC_REG); -+ np->current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); -+} -+ -+static void -+tdk_check_duplex(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_TDK_DIAGNOSTIC_REG); -+ np->full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; -+ -+} -+ -+static void -+intel_check_speed(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_INT_STATUS_REG_2); -+ np->current_speed = (data & MDIO_INT_SPEED ? 100 : 10); -+} -+ -+static void -+intel_check_duplex(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_INT_STATUS_REG_2); -+ np->full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; -+} -+ -+static void -+national_check_speed(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_NAT_LINK_AN_REG); -+ if (data & MDIO_NAT_1000) -+ np->current_speed = 1000; -+ else if (data & MDIO_NAT_100) -+ np->current_speed = 100; -+ else -+ np->current_speed = 10; -+} -+ -+static void -+national_check_duplex(struct net_device *dev) -+{ -+ unsigned long data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MDIO_NAT_LINK_AN_REG); -+ if (data & MDIO_NAT_FULL_DUPLEX_IND) -+ np->full_duplex = 1; -+ else -+ np->full_duplex = 0; -+} -+ -+static void -+crisv32_eth_reset_tranceiver(struct net_device *dev) -+{ -+ int i; -+ unsigned short cmd; -+ unsigned short data; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ data = crisv32_eth_get_mdio_reg(dev, MII_BMCR); -+ -+ cmd = (MDIO_START << 14) -+ | (MDIO_WRITE << 12) -+ | (np->mdio_phy_addr << 7) -+ | (MII_BMCR << 2); -+ -+ crisv32_eth_send_mdio_cmd(dev, cmd, 1); -+ -+ data |= 0x8000; -+ -+ /* Magic value is number of bits. */ -+ for (i = 15; i >= 0; i--) -+ crisv32_eth_send_mdio_bit(dev, GET_BIT(i, data)); -+} -+ -+static unsigned short -+crisv32_eth_get_mdio_reg(struct net_device *dev, unsigned char reg_num) -+{ -+ int i; -+ unsigned short cmd; /* Data to be sent on MDIO port. */ -+ unsigned short data; /* Data read from MDIO. */ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ /* Start of frame, OP Code, Physical Address, Register Address. */ -+ cmd = (MDIO_START << 14) -+ | (MDIO_READ << 12) -+ | (np->mdio_phy_addr << 7) -+ | (reg_num << 2); -+ -+ crisv32_eth_send_mdio_cmd(dev, cmd, 0); -+ -+ data = 0; -+ -+ /* Receive data. Magic value is number of bits. */ -+ for (i = 15; i >= 0; i--) -+ data |= (crisv32_eth_receive_mdio_bit(dev) << i); -+ -+ return data; -+} -+ -+static void -+crisv32_eth_set_mdio_reg(struct net_device *dev, unsigned char reg, int value) -+{ -+ int bitCounter; -+ unsigned short cmd; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ cmd = (MDIO_START << 14) -+ | (MDIO_WRITE << 12) -+ | (np->mdio_phy_addr << 7) -+ | (reg << 2); -+ -+ crisv32_eth_send_mdio_cmd(dev, cmd, 1); -+ -+ /* Data... */ -+ for (bitCounter=15; bitCounter>=0 ; bitCounter--) { -+ crisv32_eth_send_mdio_bit(dev, GET_BIT(bitCounter, value)); -+ } -+} -+ -+static void -+crisv32_eth_send_mdio_cmd(struct net_device *dev, unsigned short cmd, -+ int write_cmd) -+{ -+ int i; -+ unsigned char data = 0x2; -+ -+ /* Preamble. Magic value is number of bits. */ -+ for (i = 31; i >= 0; i--) -+ crisv32_eth_send_mdio_bit(dev, GET_BIT(i, MDIO_PREAMBLE)); -+ -+ for (i = 15; i >= 2; i--) -+ crisv32_eth_send_mdio_bit(dev, GET_BIT(i, cmd)); -+ -+ /* Turnaround. */ -+ for (i = 1; i >= 0; i--) -+ if (write_cmd) -+ crisv32_eth_send_mdio_bit(dev, GET_BIT(i, data)); -+ else -+ crisv32_eth_receive_mdio_bit(dev); -+} -+ -+static void -+crisv32_eth_send_mdio_bit(struct net_device *dev, unsigned char bit) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ reg_eth_rw_mgm_ctrl mgm_ctrl = { -+ .mdoe = regk_eth_yes, -+ .mdio = bit & 1 -+ }; -+ -+ REG_WR(eth, np->eth_inst, rw_mgm_ctrl, mgm_ctrl); -+ -+ udelay(1); -+ -+ mgm_ctrl.mdc = 1; -+ REG_WR(eth, np->eth_inst, rw_mgm_ctrl, mgm_ctrl); -+ -+ udelay(1); -+} -+ -+static unsigned char -+crisv32_eth_receive_mdio_bit(struct net_device *dev) -+{ -+ reg_eth_r_stat stat; -+ reg_eth_rw_mgm_ctrl mgm_ctrl = {0}; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ -+ REG_WR(eth, np->eth_inst, rw_mgm_ctrl, mgm_ctrl); -+ stat = REG_RD(eth, np->eth_inst, r_stat); -+ -+ udelay(1); -+ -+ mgm_ctrl.mdc = 1; -+ REG_WR(eth, np->eth_inst, rw_mgm_ctrl, mgm_ctrl); -+ -+ udelay(1); -+ return stat.mdio; -+} -+ -+static void -+crisv32_clear_network_leds(unsigned long priv) -+{ -+ struct net_device *dev = (struct net_device*)priv; -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ unsigned long flags; -+ -+ spin_lock_irqsave(&np->leds->led_lock, flags); -+ if (np->leds->led_active && time_after(jiffies, np->leds->led_next_time)) { -+ crisv32_set_network_leds(LED_NOACTIVITY, dev); -+ -+ /* Set the earliest time we may set the LED */ -+ np->leds->led_next_time = jiffies + NET_FLASH_PAUSE; -+ np->leds->led_active = 0; -+ } -+ spin_unlock_irqrestore(&np->leds->led_lock, flags); -+} -+ -+static void -+crisv32_set_network_leds(int active, struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ int light_leds = 0; -+ -+ if (np->leds->ledgrp == LED_GRP_NONE) -+ return; -+ -+ if (active == LED_NOLINK) { -+ if (dev == crisv32_dev[0]) -+ np->leds->ifisup[0] = 0; -+ else -+ np->leds->ifisup[1] = 0; -+ } -+ else if (active == LED_LINK) { -+ if (dev == crisv32_dev[0]) -+ np->leds->ifisup[0] = 1; -+ else -+ np->leds->ifisup[1] = 1; -+#if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK) -+ light_leds = 1; -+ } else { -+ light_leds = (active == LED_NOACTIVITY); -+#elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY) -+ light_leds = 0; -+ } else { -+ light_leds = (active == LED_ACTIVITY); -+#else -+#error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY" -+#endif -+ } -+ -+ if (!use_network_leds) { -+ NET_LED_SET(np->leds->ledgrp,LED_OFF); -+ return; -+ } -+ -+ if (!np->current_speed) { -+ /* Set link down if none of the interfaces that use this led group is up */ -+ if ((np->leds->ifisup[0] + np->leds->ifisup[1]) == 0) { -+#if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION) -+ /* Make LED red, link is down */ -+ NET_LED_SET(np->leds->ledgrp,LED_RED); -+#else -+ NET_LED_SET(np->leds->ledgrp,LED_OFF); -+#endif -+ } -+ } -+ else if (light_leds) { -+ if (np->current_speed == 10) { -+ NET_LED_SET(np->leds->ledgrp,LED_ORANGE); -+ } else { -+ NET_LED_SET(np->leds->ledgrp,LED_GREEN); -+ } -+ } -+ else { -+ NET_LED_SET(np->leds->ledgrp,LED_OFF); -+ } -+} -+ -+#ifdef CONFIG_NET_POLL_CONTROLLER -+static void -+crisv32_netpoll(struct net_device* netdev) -+{ -+ crisv32rx_eth_interrupt(DMA0_INTR_VECT, netdev, NULL); -+} -+#endif -+ -+#ifdef CONFIG_CPU_FREQ -+static int -+crisv32_ethernet_freq_notifier(struct notifier_block *nb, -+ unsigned long val, void *data) -+{ -+ struct cpufreq_freqs *freqs = data; -+ if (val == CPUFREQ_POSTCHANGE) { -+ int i; -+ for (i = 0; i < 2; i++) { -+ struct net_device* dev = crisv32_dev[i]; -+ unsigned short data; -+ if (dev == NULL) -+ continue; -+ -+ data = crisv32_eth_get_mdio_reg(dev, MII_BMCR); -+ if (freqs->new == 200000) -+ data &= ~BMCR_PDOWN; -+ else -+ data |= BMCR_PDOWN; -+ crisv32_eth_set_mdio_reg(dev, MII_BMCR, data); -+ } -+ } -+ return 0; -+} -+#endif -+ -+/* -+ * Must be called with the np->lock held. -+ */ -+static void crisv32_ethernet_bug(struct net_device *dev) -+{ -+ struct crisv32_ethernet_local *np = netdev_priv(dev); -+ dma_descr_data *dma_pos; -+ dma_descr_data *in_dma_pos; -+ reg_dma_rw_stat stat = {0}; -+ reg_dma_rw_stat in_stat = {0}; -+ int i; -+ -+ /* Get the current output dma position. */ -+ stat = REG_RD(dma, np->dma_out_inst, rw_stat); -+ dma_pos = phys_to_virt(REG_RD_INT(dma, np->dma_out_inst, rw_data)); -+ in_stat = REG_RD(dma, np->dma_in_inst, rw_stat); -+ in_dma_pos = phys_to_virt(REG_RD_INT(dma, np->dma_in_inst, rw_data)); -+ -+ printk("%s:\n" -+ "stat.list_state=%x\n" -+ "stat.mode=%x\n" -+ "stat.stream_cmd_src=%x\n" -+ "dma_pos=%x\n" -+ "in_stat.list_state=%x\n" -+ "in_stat.mode=%x\n" -+ "in_stat.stream_cmd_src=%x\n" -+ "in_dma_pos=%x\n" -+ "catch=%x active=%x\n" -+ "packets=%d queue=%d\n" -+ "intr_vect.r_vect=%x\n" -+ "dma.r_masked_intr=%x dma.rw_ack_intr=%x " -+ "dma.r_intr=%x dma.rw_intr_masked=%x\n" -+ "eth.r_stat=%x\n", -+ __func__, -+ stat.list_state, stat.mode, stat.stream_cmd_src, -+ (unsigned int)dma_pos, -+ in_stat.list_state, in_stat.mode, in_stat.stream_cmd_src, -+ (unsigned int)in_dma_pos, -+ (unsigned int)&np->catch_tx_desc->descr, -+ (unsigned int)&np->active_tx_desc->descr, -+ np->txpackets, -+ netif_queue_stopped(dev), -+ REG_RD_INT(intr_vect, regi_irq, r_vect), -+ REG_RD_INT(dma, np->dma_out_inst, r_masked_intr), -+ REG_RD_INT(dma, np->dma_out_inst, rw_ack_intr), -+ REG_RD_INT(dma, np->dma_out_inst, r_intr), -+ REG_RD_INT(dma, np->dma_out_inst, rw_intr_mask), -+ REG_RD_INT(eth, np->eth_inst, r_stat)); -+ -+ printk("tx-descriptors:\n"); -+ for (i = 0; i < NBR_TX_DESC; i++) { -+ printk("txdesc[%d]=0x%x\n", i, (unsigned int) -+ virt_to_phys(&np->dma_tx_descr_list[i].descr)); -+ printk("txdesc[%d].skb=0x%x\n", i, -+ (unsigned int)np->dma_tx_descr_list[i].skb); -+ printk("txdesc[%d].buf=0x%x\n", i, -+ (unsigned int)np->dma_tx_descr_list[i].descr.buf); -+ printk("txdesc[%d].after=0x%x\n", i, -+ (unsigned int)np->dma_tx_descr_list[i].descr.after); -+ printk("txdesc[%d].intr=%x\n", i, -+ np->dma_tx_descr_list[i].descr.intr); -+ printk("txdesc[%d].eol=%x\n", i, -+ np->dma_tx_descr_list[i].descr.eol); -+ printk("txdesc[%d].out_eop=%x\n", i, -+ np->dma_tx_descr_list[i].descr.out_eop); -+ printk("txdesc[%d].wait=%x\n", i, -+ np->dma_tx_descr_list[i].descr.wait); -+ } -+} -+ -+ -+static int -+crisv32_init_module(void) -+{ -+ return crisv32_ethernet_init(); -+} -+ -+module_init(crisv32_init_module); -diff -urN linux-2.6.19.2.orig/drivers/net/cris/eth_v32.h linux-2.6.19.2.dev/drivers/net/cris/eth_v32.h ---- linux-2.6.19.2.orig/drivers/net/cris/eth_v32.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.19.2.dev/drivers/net/cris/eth_v32.h 2007-02-06 11:10:37.000000000 +0100 -@@ -0,0 +1,248 @@ -+/* -+ * Definitions for ETRAX FS ethernet driver. -+ * -+ * Copyright (C) 2003, 2004, 2005 Axis Communications. -+ */ -+ -+#ifndef _ETRAX_ETHERNET_H_ -+#define _ETRAX_ETHERNET_H_ -+ -+#include <asm/arch/hwregs/dma.h> -+ -+ -+#define MAX_MEDIA_DATA_SIZE 1522 /* Max packet size. */ -+ -+#define NBR_RX_DESC 64 /* Number of RX descriptors. */ -+#define NBR_TX_DESC 16 /* Number of TX descriptors. */ -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+#define NBR_INTMEM_RX_DESC 5 /* Number of RX descriptors in int. mem. -+ * when running in gigabit mode. -+ * Should be less then NBR_RX_DESC -+ */ -+#define NBR_INTMEM_TX_BUF 4 /* Number of TX buffers in int. mem -+ * when running in gigabit mode. -+ * Should be less than NBR_TX_DESC -+ */ -+#endif -+ -+/* Large packets are sent directly to upper layers while small packets -+ * are copied (to reduce memory waste). The following constant -+ * decides the breakpoint. -+ */ -+#define RX_COPYBREAK (256) -+ -+#define ETHER_HEAD_LEN (14) -+ -+/* -+** MDIO constants. -+*/ -+#define MDIO_START 0x1 -+#define MDIO_READ 0x2 -+#define MDIO_WRITE 0x1 -+#define MDIO_PREAMBLE 0xfffffffful -+ -+/* Broadcom specific */ -+#define MDIO_AUX_CTRL_STATUS_REG 0x18 -+#define MDIO_BC_FULL_DUPLEX_IND 0x1 -+#define MDIO_BC_SPEED 0x2 -+ -+/* TDK specific */ -+#define MDIO_TDK_DIAGNOSTIC_REG 18 -+#define MDIO_TDK_DIAGNOSTIC_RATE 0x400 -+#define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 -+ -+/*Intel LXT972A specific*/ -+#define MDIO_INT_STATUS_REG_2 0x0011 -+#define MDIO_INT_FULL_DUPLEX_IND ( 0x0001 << 9 ) -+#define MDIO_INT_SPEED ( 0x0001 << 14 ) -+ -+/*National Semiconductor DP83865 specific*/ -+#define MDIO_NAT_LINK_AN_REG 0x11 -+#define MDIO_NAT_1000 (0x0001 << 4) -+#define MDIO_NAT_100 (0x0001 << 3) -+#define MDIO_NAT_FULL_DUPLEX_IND (0x0001 << 1) -+ -+/* Network flash constants */ -+#define NET_FLASH_TIME (HZ/50) /* 20 ms */ -+#define NET_FLASH_PAUSE (HZ/100) /* 10 ms */ -+#define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 seconds. */ -+#define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 seconds. */ -+ -+/* Duplex settings. */ -+enum duplex { -+ half, -+ full, -+ autoneg -+}; -+ -+/* Some transceivers requires special handling. */ -+struct transceiver_ops { -+ unsigned int oui; -+ void (*check_speed) (struct net_device * dev); -+ void (*check_duplex) (struct net_device * dev); -+}; -+ -+typedef struct crisv32_eth_descr { -+ dma_descr_data descr __attribute__ ((__aligned__(32))); -+ struct sk_buff *skb; -+ unsigned char *linearized_packet; -+} crisv32_eth_descr; -+ -+ -+ -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+struct tx_buffer_list { -+ struct tx_buffer_list *next; -+ unsigned char *buf; -+ char free; -+}; -+#endif -+ -+/* LED stuff */ -+#define LED_GRP_0 0 -+#define LED_GRP_1 1 -+#define LED_GRP_NONE 2 -+ -+#define LED_ACTIVITY 0 -+#define LED_NOACTIVITY 1 -+#define LED_LINK 2 -+#define LED_NOLINK 3 -+ -+struct crisv32_eth_leds { -+ unsigned int ledgrp; -+ int led_active; -+ unsigned long led_next_time; -+ struct timer_list clear_led_timer; -+ spinlock_t led_lock; /* Protect LED state */ -+ int ifisup[2]; -+}; -+ -+#define NET_LED_SET(x,y) \ -+ do { \ -+ if (x == 0) LED_NETWORK_GRP0_SET(y); \ -+ if (x == 1) LED_NETWORK_GRP1_SET(y); \ -+ } while (0) -+ -+/* Information that need to be kept for each device. */ -+struct crisv32_ethernet_local { -+ dma_descr_context ctxt_in __attribute__ ((__aligned__(32))); -+ dma_descr_context ctxt_out __attribute__ ((__aligned__(32))); -+ -+ crisv32_eth_descr *active_rx_desc; -+ crisv32_eth_descr *prev_rx_desc; -+ crisv32_eth_descr *last_rx_desc; -+ -+ crisv32_eth_descr *active_tx_desc; -+ crisv32_eth_descr *prev_tx_desc; -+ crisv32_eth_descr *catch_tx_desc; -+ -+ crisv32_eth_descr dma_rx_descr_list[NBR_RX_DESC]; -+ crisv32_eth_descr dma_tx_descr_list[NBR_TX_DESC]; -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+ struct tx_buffer_list tx_intmem_buf_list[NBR_INTMEM_TX_BUF]; -+ struct tx_buffer_list *intmem_tx_buf_active; -+ struct tx_buffer_list *intmem_tx_buf_catch; -+ char gigabit_mode; -+#endif -+ char new_rx_package; -+ -+ /* DMA and ethernet registers for the device. */ -+ int eth_inst; -+ int dma_in_inst; -+ int dma_out_inst; -+ -+ /* Network speed indication. */ -+ struct timer_list speed_timer; -+ int current_speed; /* Speed read from tranceiver */ -+ int current_speed_selection; /* Speed selected by user */ -+ int sender_started; -+ int txpackets; -+ -+ struct crisv32_eth_leds *leds; -+ -+ /* Duplex. */ -+ struct timer_list duplex_timer; -+ int full_duplex; -+ enum duplex current_duplex; -+ -+ struct net_device_stats stats; -+ -+ /* Transciever address. */ -+ unsigned int mdio_phy_addr; -+ -+ struct transceiver_ops *transceiver; -+ -+ /* -+ * TX control lock. This protects the transmit buffer ring state along -+ * with the "tx full" state of the driver. This means all netif_queue -+ * flow control actions are protected by this lock as well. -+ */ -+ spinlock_t lock; -+ spinlock_t transceiver_lock; /* Protect transceiver state. */ -+}; -+ -+/* Function prototypes. */ -+static int crisv32_ethernet_init(void); -+static int crisv32_ethernet_device_init(struct net_device* dev); -+static int crisv32_eth_open(struct net_device *dev); -+static int crisv32_eth_close(struct net_device *dev); -+static int crisv32_eth_set_mac_address(struct net_device *dev, void *vpntr); -+static irqreturn_t crisv32rx_eth_interrupt(int irq, void *dev_id); -+static irqreturn_t crisv32tx_eth_interrupt(int irq, void *dev_id); -+static irqreturn_t crisv32nw_eth_interrupt(int irq, void *dev_id); -+static void crisv32_eth_receive_packet(struct net_device *dev); -+static int crisv32_eth_send_packet(struct sk_buff *skb, struct net_device *dev); -+static void crisv32_eth_hw_send_packet(unsigned char *buf, int length, -+ void *priv); -+static void crisv32_eth_tx_timeout(struct net_device *dev); -+static void crisv32_eth_set_multicast_list(struct net_device *dev); -+static int crisv32_eth_ioctl(struct net_device *dev, struct ifreq *ifr, -+ int cmd); -+static int crisv32_eth_set_config(struct net_device* dev, struct ifmap* map); -+#ifdef CONFIG_CRIS_MACH_ARTPEC3 -+static void crisv32_eth_switch_intmem_usage(struct net_device *dev); -+#endif -+static void crisv32_eth_negotiate(struct net_device *dev); -+static void crisv32_eth_check_speed(unsigned long idev); -+static void crisv32_eth_set_speed(struct net_device *dev, unsigned long speed); -+static void crisv32_eth_check_duplex(unsigned long idev); -+static void crisv32_eth_set_duplex(struct net_device *dev, enum duplex); -+static int crisv32_eth_probe_transceiver(struct net_device *dev); -+ -+static struct ethtool_ops crisv32_ethtool_ops; -+ -+static void generic_check_speed(struct net_device *dev); -+static void generic_check_duplex(struct net_device *dev); -+static void broadcom_check_speed(struct net_device *dev); -+static void broadcom_check_duplex(struct net_device *dev); -+static void tdk_check_speed(struct net_device *dev); -+static void tdk_check_duplex(struct net_device *dev); -+static void intel_check_speed(struct net_device* dev); -+static void intel_check_duplex(struct net_device *dev); -+static void national_check_speed(struct net_device* dev); -+static void national_check_duplex(struct net_device *dev); -+ -+#ifdef CONFIG_NET_POLL_CONTROLLER -+static void crisv32_netpoll(struct net_device* dev); -+#endif -+ -+static void crisv32_clear_network_leds(unsigned long dummy); -+static void crisv32_set_network_leds(int active, struct net_device* dev); -+ -+static void crisv32_eth_reset_tranceiver(struct net_device *dev); -+static unsigned short crisv32_eth_get_mdio_reg(struct net_device *dev, -+ unsigned char reg_num); -+static void crisv32_eth_set_mdio_reg(struct net_device *dev, -+ unsigned char reg_num, -+ int val); -+static void crisv32_eth_send_mdio_cmd(struct net_device *dev, -+ unsigned short cmd, int write_cmd); -+static void crisv32_eth_send_mdio_bit(struct net_device *dev, -+ unsigned char bit); -+static unsigned char crisv32_eth_receive_mdio_bit(struct net_device *dev); -+ -+static struct net_device_stats *crisv32_get_stats(struct net_device *dev); -+static void crisv32_start_dma_out(struct crisv32_ethernet_local* np); -+ -+ -+#endif /* _ETRAX_ETHERNET_H_ */ |