diff options
Diffstat (limited to 'target/linux/adm5120/files-3.8/drivers/usb')
8 files changed, 0 insertions, 4707 deletions
diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-dbg.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-dbg.c deleted file mode 100644 index 2d5dc2a5a7..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-dbg.c +++ /dev/null @@ -1,836 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-dbg.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -/*-------------------------------------------------------------------------*/ - -static inline char *ed_typestring(int ed_type) -{ - switch (ed_type) { - case PIPE_CONTROL: - return "ctrl"; - case PIPE_BULK: - return "bulk"; - case PIPE_INTERRUPT: - return "intr"; - case PIPE_ISOCHRONOUS: - return "isoc"; - } - return "(bad ed_type)"; -} - -static inline char *ed_statestring(int state) -{ - switch (state) { - case ED_IDLE: - return "IDLE"; - case ED_UNLINK: - return "UNLINK"; - case ED_OPER: - return "OPER"; - } - return "?STATE"; -} - -static inline char *pipestring(int pipe) -{ - return ed_typestring(usb_pipetype(pipe)); -} - -static inline char *td_pidstring(u32 info) -{ - switch (info & TD_DP) { - case TD_DP_SETUP: - return "SETUP"; - case TD_DP_IN: - return "IN"; - case TD_DP_OUT: - return "OUT"; - } - return "?PID"; -} - -static inline char *td_togglestring(u32 info) -{ - switch (info & TD_T) { - case TD_T_DATA0: - return "DATA0"; - case TD_T_DATA1: - return "DATA1"; - case TD_T_CARRY: - return "CARRY"; - } - return "?TOGGLE"; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef DEBUG - -/* debug| print the main components of an URB - * small: 0) header + data packets 1) just header - */ -static void __attribute__((unused)) -urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small, int status) -{ - unsigned int pipe = urb->pipe; - - if (!urb->dev || !urb->dev->bus) { - admhc_dbg(ahcd, "%s URB: no dev", str); - return; - } - -#ifndef ADMHC_VERBOSE_DEBUG - if (status != 0) -#endif - admhc_dbg(ahcd, "URB-%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d " - "stat=%d\n", - str, - urb, - usb_pipedevice(pipe), - usb_pipeendpoint(pipe), - usb_pipeout(pipe) ? "out" : "in", - pipestring(pipe), - urb->transfer_flags, - urb->actual_length, - urb->transfer_buffer_length, - status); - -#ifdef ADMHC_VERBOSE_DEBUG - if (!small) { - int i, len; - - if (usb_pipecontrol(pipe)) { - admhc_dbg(ahcd, "setup(8):"); - for (i = 0; i < 8 ; i++) - printk(KERN_INFO" %02x", ((__u8 *)urb->setup_packet)[i]); - printk(KERN_INFO "\n"); - } - if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) { - admhc_dbg(ahcd, "data(%d/%d):", - urb->actual_length, - urb->transfer_buffer_length); - len = usb_pipeout(pipe) ? - urb->transfer_buffer_length : urb->actual_length; - for (i = 0; i < 16 && i < len; i++) - printk(KERN_INFO " %02x", ((__u8 *)urb->transfer_buffer)[i]); - printk(KERN_INFO "%s stat:%d\n", i < len ? "..." : "", status); - } - } -#endif /* ADMHC_VERBOSE_DEBUG */ -} - -#define admhc_dbg_sw(ahcd, next, size, format, arg...) \ - do { \ - if (next) { \ - unsigned s_len; \ - s_len = scnprintf(*next, *size, format, ## arg); \ - *size -= s_len; *next += s_len; \ - } else \ - admhc_dbg(ahcd, format, ## arg); \ - } while (0); - - -static void admhc_dump_intr_mask(struct admhcd *ahcd, char *label, u32 mask, - char **next, unsigned *size) -{ - admhc_dbg_sw(ahcd, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", - label, - mask, - (mask & ADMHC_INTR_INTA) ? " INTA" : "", - (mask & ADMHC_INTR_FATI) ? " FATI" : "", - (mask & ADMHC_INTR_SWI) ? " SWI" : "", - (mask & ADMHC_INTR_TDC) ? " TDC" : "", - (mask & ADMHC_INTR_FNO) ? " FNO" : "", - (mask & ADMHC_INTR_SO) ? " SO" : "", - (mask & ADMHC_INTR_INSM) ? " INSM" : "", - (mask & ADMHC_INTR_BABI) ? " BABI" : "", - (mask & ADMHC_INTR_7) ? " !7!" : "", - (mask & ADMHC_INTR_6) ? " !6!" : "", - (mask & ADMHC_INTR_RESI) ? " RESI" : "", - (mask & ADMHC_INTR_SOFI) ? " SOFI" : "" - ); -} - -static void maybe_print_eds(struct admhcd *ahcd, char *label, u32 value, - char **next, unsigned *size) -{ - if (value) - admhc_dbg_sw(ahcd, next, size, "%s %08x\n", label, value); -} - -static char *buss2string(int state) -{ - switch (state) { - case ADMHC_BUSS_RESET: - return "reset"; - case ADMHC_BUSS_RESUME: - return "resume"; - case ADMHC_BUSS_OPER: - return "operational"; - case ADMHC_BUSS_SUSPEND: - return "suspend"; - } - return "?state"; -} - -static void -admhc_dump_status(struct admhcd *ahcd, char **next, unsigned *size) -{ - struct admhcd_regs __iomem *regs = ahcd->regs; - u32 temp; - - temp = admhc_readl(ahcd, ®s->gencontrol); - admhc_dbg_sw(ahcd, next, size, - "gencontrol 0x%08x%s%s%s%s\n", - temp, - (temp & ADMHC_CTRL_UHFE) ? " UHFE" : "", - (temp & ADMHC_CTRL_SIR) ? " SIR" : "", - (temp & ADMHC_CTRL_DMAA) ? " DMAA" : "", - (temp & ADMHC_CTRL_SR) ? " SR" : "" - ); - - temp = admhc_readl(ahcd, ®s->host_control); - admhc_dbg_sw(ahcd, next, size, - "host_control 0x%08x BUSS=%s%s\n", - temp, - buss2string(temp & ADMHC_HC_BUSS), - (temp & ADMHC_HC_DMAE) ? " DMAE" : "" - ); - - admhc_dump_intr_mask(ahcd, "int_status", - admhc_readl(ahcd, ®s->int_status), - next, size); - admhc_dump_intr_mask(ahcd, "int_enable", - admhc_readl(ahcd, ®s->int_enable), - next, size); - - maybe_print_eds(ahcd, "hosthead", - admhc_readl(ahcd, ®s->hosthead), next, size); -} - -#define dbg_port_sw(hc, num, value, next, size) \ - admhc_dbg_sw(hc, next, size, \ - "portstatus [%d] " \ - "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ - num, temp, \ - (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \ - (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \ - (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \ - (temp & ADMHC_PS_PESC) ? " PESC" : "", \ - (temp & ADMHC_PS_CSC) ? " CSC" : "", \ - \ - (temp & ADMHC_PS_LSDA) ? " LSDA" : "", \ - (temp & ADMHC_PS_PPS) ? " PPS" : "", \ - (temp & ADMHC_PS_PRS) ? " PRS" : "", \ - (temp & ADMHC_PS_POCI) ? " POCI" : "", \ - (temp & ADMHC_PS_PSS) ? " PSS" : "", \ - \ - (temp & ADMHC_PS_PES) ? " PES" : "", \ - (temp & ADMHC_PS_CCS) ? " CCS" : "" \ - ); - - -static void -admhc_dump_roothub( - struct admhcd *ahcd, - int verbose, - char **next, - unsigned *size) -{ - u32 temp, i; - - temp = admhc_read_rhdesc(ahcd); - if (temp == ~(u32)0) - return; - - if (verbose) { - admhc_dbg_sw(ahcd, next, size, - "rhdesc %08x%s%s%s%s%s%s PPCM=%02x%s%s%s%s NUMP=%d(%d)\n", - temp, - (temp & ADMHC_RH_CRWE) ? " CRWE" : "", - (temp & ADMHC_RH_OCIC) ? " OCIC" : "", - (temp & ADMHC_RH_LPSC) ? " LPSC" : "", - (temp & ADMHC_RH_LPSC) ? " DRWE" : "", - (temp & ADMHC_RH_LPSC) ? " OCI" : "", - (temp & ADMHC_RH_LPSC) ? " LPS" : "", - ((temp & ADMHC_RH_PPCM) >> 16), - (temp & ADMHC_RH_NOCP) ? " NOCP" : "", - (temp & ADMHC_RH_OCPM) ? " OCPM" : "", - (temp & ADMHC_RH_NPS) ? " NPS" : "", - (temp & ADMHC_RH_PSM) ? " PSM" : "", - (temp & ADMHC_RH_NUMP), ahcd->num_ports - ); - } - - for (i = 0; i < ahcd->num_ports; i++) { - temp = admhc_read_portstatus(ahcd, i); - dbg_port_sw(ahcd, i, temp, next, size); - } -} - -static void admhc_dump(struct admhcd *ahcd, int verbose) -{ - admhc_dbg(ahcd, "ADMHC ahcd state\n"); - - /* dumps some of the state we know about */ - admhc_dump_status(ahcd, NULL, NULL); - admhc_dbg(ahcd, "current frame #%04x\n", - admhc_frame_no(ahcd)); - - admhc_dump_roothub(ahcd, verbose, NULL, NULL); -} - -static const char data0[] = "DATA0"; -static const char data1[] = "DATA1"; - -static void admhc_dump_td(const struct admhcd *ahcd, const char *label, - const struct td *td) -{ - u32 tmp; - - admhc_dbg(ahcd, "%s td %p; urb %p index %d; hwNextTD %08x\n", - label, td, - td->urb, td->index, - hc32_to_cpup(ahcd, &td->hwNextTD)); - - tmp = hc32_to_cpup(ahcd, &td->hwINFO); - admhc_dbg(ahcd, " status %08x%s CC=%x EC=%d %s %s ISI=%x FN=%x\n", - tmp, - (tmp & TD_OWN) ? " OWN" : "", - TD_CC_GET(tmp), - TD_EC_GET(tmp), - td_togglestring(tmp), - td_pidstring(tmp), - TD_ISI_GET(tmp), - TD_FN_GET(tmp)); - - tmp = hc32_to_cpup(ahcd, &td->hwCBL); - admhc_dbg(ahcd, " dbp %08x; cbl %08x; LEN=%d%s\n", - hc32_to_cpup(ahcd, &td->hwDBP), - tmp, - TD_BL_GET(tmp), - (tmp & TD_IE) ? " IE" : ""); -} - -/* caller MUST own hcd spinlock if verbose is set! */ -static void __attribute__((unused)) -admhc_dump_ed(const struct admhcd *ahcd, const char *label, - const struct ed *ed, int verbose) -{ - u32 tmp = hc32_to_cpu(ahcd, ed->hwINFO); - - admhc_dbg(ahcd, "%s ed %p %s type %s; next ed %08x\n", - label, - ed, ed_statestring(ed->state), ed_typestring(ed->type), - hc32_to_cpup(ahcd, &ed->hwNextED)); - - admhc_dbg(ahcd, " info %08x MAX=%d%s%s%s%s EP=%d DEV=%d\n", tmp, - ED_MPS_GET(tmp), - (tmp & ED_ISO) ? " ISO" : "", - (tmp & ED_SKIP) ? " SKIP" : "", - (tmp & ED_SPEED_FULL) ? " FULL" : " LOW", - (tmp & ED_INT) ? " INT" : "", - ED_EN_GET(tmp), - ED_FA_GET(tmp)); - - tmp = hc32_to_cpup(ahcd, &ed->hwHeadP); - admhc_dbg(ahcd, " tds: head %08x tail %08x %s%s%s\n", - tmp & TD_MASK, - hc32_to_cpup(ahcd, &ed->hwTailP), - (tmp & ED_C) ? data1 : data0, - (tmp & ED_H) ? " HALT" : "", - verbose ? " td list follows" : " (not listing)"); - - if (verbose) { - struct list_head *tmp; - - /* use ed->td_list because HC concurrently modifies - * hwNextTD as it accumulates ed_donelist. - */ - list_for_each(tmp, &ed->td_list) { - struct td *td; - td = list_entry(tmp, struct td, td_list); - admhc_dump_td(ahcd, " ->", td); - } - } -} - -#else /* ifdef DEBUG */ - -static inline void urb_print(struct admhcd *ahcd, struct urb * urb, char * str, - int small, int status) {} -static inline void admhc_dump_ed(const struct admhcd *ahcd, const char *label, - const struct ed *ed, int verbose) {} -static inline void admhc_dump_td(const struct admhcd *ahcd, const char *label, - const struct td *td) {} -static inline void admhc_dump(struct admhcd *ahcd, int verbose) {} - -#undef ADMHC_VERBOSE_DEBUG - -#endif /* DEBUG */ - -/*-------------------------------------------------------------------------*/ - -#ifdef STUB_DEBUG_FILES - -static inline void create_debug_files(struct admhcd *bus) { } -static inline void remove_debug_files(struct admhcd *bus) { } - -#else - -static int debug_async_open(struct inode *, struct file *); -static int debug_periodic_open(struct inode *, struct file *); -static int debug_registers_open(struct inode *, struct file *); -static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); -static int debug_close(struct inode *, struct file *); - -static const struct file_operations debug_async_fops = { - .owner = THIS_MODULE, - .open = debug_async_open, - .read = debug_output, - .release = debug_close, - .llseek = default_llseek, -}; -static const struct file_operations debug_periodic_fops = { - .owner = THIS_MODULE, - .open = debug_periodic_open, - .read = debug_output, - .release = debug_close, - .llseek = default_llseek, -}; -static const struct file_operations debug_registers_fops = { - .owner = THIS_MODULE, - .open = debug_registers_open, - .read = debug_output, - .release = debug_close, - .llseek = default_llseek, -}; - -static struct dentry *admhc_debug_root; - -struct debug_buffer { - ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ - struct admhcd *ahcd; - struct mutex mutex; /* protect filling of buffer */ - size_t count; /* number of characters filled into buffer */ - char *page; -}; - -static ssize_t -show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) -{ - unsigned temp; - unsigned size = count; - - if (!ed) - return 0; - - /* dump a snapshot of the bulk or control schedule */ - while (ed) { - u32 info = hc32_to_cpu(ahcd, ed->hwINFO); - u32 headp = hc32_to_cpu(ahcd, ed->hwHeadP); - u32 tailp = hc32_to_cpu(ahcd, ed->hwTailP); - struct list_head *entry; - struct td *td; - - temp = scnprintf(buf, size, - "ed/%p %s %s %cs dev%d ep%d %s%smax %d %08x%s%s %s" - " h:%08x t:%08x", - ed, - ed_statestring(ed->state), - ed_typestring(ed->type), - (info & ED_SPEED_FULL) ? 'f' : 'l', - info & ED_FA_MASK, - (info >> ED_EN_SHIFT) & ED_EN_MASK, - (info & ED_INT) ? "INT " : "", - (info & ED_ISO) ? "ISO " : "", - (info >> ED_MPS_SHIFT) & ED_MPS_MASK , - info, - (info & ED_SKIP) ? " S" : "", - (headp & ED_H) ? " H" : "", - (headp & ED_C) ? data1 : data0, - headp & ED_MASK, tailp); - size -= temp; - buf += temp; - - list_for_each(entry, &ed->td_list) { - u32 dbp, cbl; - - td = list_entry(entry, struct td, td_list); - info = hc32_to_cpup(ahcd, &td->hwINFO); - dbp = hc32_to_cpup(ahcd, &td->hwDBP); - cbl = hc32_to_cpup(ahcd, &td->hwCBL); - - temp = scnprintf(buf, size, - "\n\ttd/%p %s %d %s%scc=%x urb %p (%08x,%08x)", - td, - td_pidstring(info), - TD_BL_GET(cbl), - (info & TD_OWN) ? "" : "DONE ", - (cbl & TD_IE) ? "IE " : "", - TD_CC_GET(info), td->urb, info, cbl); - size -= temp; - buf += temp; - } - - temp = scnprintf(buf, size, "\n"); - size -= temp; - buf += temp; - - ed = ed->ed_next; - } - - return count - size; -} - -static ssize_t fill_async_buffer(struct debug_buffer *buf) -{ - struct admhcd *ahcd; - size_t temp; - unsigned long flags; - - ahcd = buf->ahcd; - - spin_lock_irqsave(&ahcd->lock, flags); - temp = show_list(ahcd, buf->page, PAGE_SIZE, ahcd->ed_head); - spin_unlock_irqrestore(&ahcd->lock, flags); - - return temp; -} - - -#define DBG_SCHED_LIMIT 64 - -static ssize_t fill_periodic_buffer(struct debug_buffer *buf) -{ - struct admhcd *ahcd; - struct ed **seen, *ed; - unsigned long flags; - unsigned temp, size, seen_count; - char *next; - unsigned i; - - seen = kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC); - if (!seen) - return 0; - seen_count = 0; - - ahcd = buf->ahcd; - next = buf->page; - size = PAGE_SIZE; - - temp = scnprintf(next, size, "size = %d\n", NUM_INTS); - size -= temp; - next += temp; - - /* dump a snapshot of the periodic schedule (and load) */ - spin_lock_irqsave(&ahcd->lock, flags); - for (i = 0; i < NUM_INTS; i++) { - ed = ahcd->periodic[i]; - if (!ed) - continue; - - temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load[i]); - size -= temp; - next += temp; - - do { - temp = scnprintf(next, size, " ed%d/%p", - ed->interval, ed); - size -= temp; - next += temp; - for (temp = 0; temp < seen_count; temp++) { - if (seen[temp] == ed) - break; - } - - /* show more info the first time around */ - if (temp == seen_count) { - u32 info = hc32_to_cpu(ahcd, ed->hwINFO); - struct list_head *entry; - unsigned qlen = 0; - - /* qlen measured here in TDs, not urbs */ - list_for_each(entry, &ed->td_list) - qlen++; - temp = scnprintf(next, size, - " (%cs dev%d ep%d%s qlen %u" - " max %d %08x%s%s)", - (info & ED_SPEED_FULL) ? 'f' : 'l', - ED_FA_GET(info), - ED_EN_GET(info), - (info & ED_ISO) ? "iso" : "int", - qlen, - ED_MPS_GET(info), - info, - (info & ED_SKIP) ? " K" : "", - (ed->hwHeadP & - cpu_to_hc32(ahcd, ED_H)) ? - " H" : ""); - size -= temp; - next += temp; - - if (seen_count < DBG_SCHED_LIMIT) - seen[seen_count++] = ed; - - ed = ed->ed_next; - - } else { - /* we've seen it and what's after */ - temp = 0; - ed = NULL; - } - - } while (ed); - - temp = scnprintf(next, size, "\n"); - size -= temp; - next += temp; - } - spin_unlock_irqrestore(&ahcd->lock, flags); - kfree(seen); - - return PAGE_SIZE - size; -} - - -#undef DBG_SCHED_LIMIT - -static ssize_t fill_registers_buffer(struct debug_buffer *buf) -{ - struct usb_hcd *hcd; - struct admhcd *ahcd; - struct admhcd_regs __iomem *regs; - unsigned long flags; - unsigned temp, size; - char *next; - u32 rdata; - - ahcd = buf->ahcd; - hcd = admhc_to_hcd(ahcd); - regs = ahcd->regs; - next = buf->page; - size = PAGE_SIZE; - - spin_lock_irqsave(&ahcd->lock, flags); - - /* dump driver info, then registers in spec order */ - - admhc_dbg_sw(ahcd, &next, &size, - "bus %s, device %s\n" - "%s\n" - "%s\n", - hcd->self.controller->bus->name, - dev_name(hcd->self.controller), - hcd->product_desc, - hcd_name); - - if (!HCD_HW_ACCESSIBLE(hcd)) { - size -= scnprintf(next, size, - "SUSPENDED (no register access)\n"); - goto done; - } - - admhc_dump_status(ahcd, &next, &size); - - /* other registers mostly affect frame timings */ - rdata = admhc_readl(ahcd, ®s->fminterval); - temp = scnprintf(next, size, - "fmintvl 0x%08x %sFSLDP=0x%04x FI=0x%04x\n", - rdata, (rdata & ADMHC_SFI_FIT) ? "FIT " : "", - (rdata >> ADMHC_SFI_FSLDP_SHIFT) & ADMHC_SFI_FSLDP_MASK, - rdata & ADMHC_SFI_FI_MASK); - size -= temp; - next += temp; - - rdata = admhc_readl(ahcd, ®s->fmnumber); - temp = scnprintf(next, size, "fmnumber 0x%08x %sFR=0x%04x FN=%04x\n", - rdata, (rdata & ADMHC_SFN_FRT) ? "FRT " : "", - (rdata >> ADMHC_SFN_FR_SHIFT) & ADMHC_SFN_FR_MASK, - rdata & ADMHC_SFN_FN_MASK); - size -= temp; - next += temp; - - /* TODO: use predefined bitmask */ - rdata = admhc_readl(ahcd, ®s->lsthresh); - temp = scnprintf(next, size, "lsthresh 0x%04x\n", - rdata & 0x3fff); - size -= temp; - next += temp; - - temp = scnprintf(next, size, "hub poll timer: %s\n", - admhcd_to_hcd(ahcd)->poll_rh ? "ON" : "OFF"); - size -= temp; - next += temp; - - /* roothub */ - admhc_dump_roothub(ahcd, 1, &next, &size); - -done: - spin_unlock_irqrestore(&ahcd->lock, flags); - return PAGE_SIZE - size; -} - - -static struct debug_buffer *alloc_buffer(struct admhcd *ahcd, - ssize_t (*fill_func)(struct debug_buffer *)) -{ - struct debug_buffer *buf; - - buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); - - if (buf) { - buf->ahcd = ahcd; - buf->fill_func = fill_func; - mutex_init(&buf->mutex); - } - - return buf; -} - -static int fill_buffer(struct debug_buffer *buf) -{ - int ret = 0; - - if (!buf->page) - buf->page = (char *)get_zeroed_page(GFP_KERNEL); - - if (!buf->page) { - ret = -ENOMEM; - goto out; - } - - ret = buf->fill_func(buf); - - if (ret >= 0) { - buf->count = ret; - ret = 0; - } - -out: - return ret; -} - -static ssize_t debug_output(struct file *file, char __user *user_buf, - size_t len, loff_t *offset) -{ - struct debug_buffer *buf = file->private_data; - int ret = 0; - - mutex_lock(&buf->mutex); - if (buf->count == 0) { - ret = fill_buffer(buf); - if (ret != 0) { - mutex_unlock(&buf->mutex); - goto out; - } - } - mutex_unlock(&buf->mutex); - - ret = simple_read_from_buffer(user_buf, len, offset, - buf->page, buf->count); - -out: - return ret; -} - -static int debug_close(struct inode *inode, struct file *file) -{ - struct debug_buffer *buf = file->private_data; - - if (buf) { - if (buf->page) - free_page((unsigned long)buf->page); - kfree(buf); - } - - return 0; -} - -static int debug_async_open(struct inode *inode, struct file *file) -{ - file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); - - return file->private_data ? 0 : -ENOMEM; -} - -static int debug_periodic_open(struct inode *inode, struct file *file) -{ - file->private_data = alloc_buffer(inode->i_private, - fill_periodic_buffer); - - return file->private_data ? 0 : -ENOMEM; -} - -static int debug_registers_open(struct inode *inode, struct file *file) -{ - file->private_data = alloc_buffer(inode->i_private, - fill_registers_buffer); - - return file->private_data ? 0 : -ENOMEM; -} - -static inline void create_debug_files(struct admhcd *ahcd) -{ - struct usb_bus *bus = &admhcd_to_hcd(ahcd)->self; - - ahcd->debug_dir = debugfs_create_dir(bus->bus_name, admhc_debug_root); - if (!ahcd->debug_dir) - goto dir_error; - - ahcd->debug_async = debugfs_create_file("async", S_IRUGO, - ahcd->debug_dir, ahcd, - &debug_async_fops); - if (!ahcd->debug_async) - goto async_error; - - ahcd->debug_periodic = debugfs_create_file("periodic", S_IRUGO, - ahcd->debug_dir, ahcd, - &debug_periodic_fops); - if (!ahcd->debug_periodic) - goto periodic_error; - - ahcd->debug_registers = debugfs_create_file("registers", S_IRUGO, - ahcd->debug_dir, ahcd, - &debug_registers_fops); - if (!ahcd->debug_registers) - goto registers_error; - - admhc_dbg(ahcd, "created debug files\n"); - return; - -registers_error: - debugfs_remove(ahcd->debug_periodic); -periodic_error: - debugfs_remove(ahcd->debug_async); -async_error: - debugfs_remove(ahcd->debug_dir); -dir_error: - ahcd->debug_periodic = NULL; - ahcd->debug_async = NULL; - ahcd->debug_dir = NULL; -} - -static inline void remove_debug_files(struct admhcd *ahcd) -{ - debugfs_remove(ahcd->debug_registers); - debugfs_remove(ahcd->debug_periodic); - debugfs_remove(ahcd->debug_async); - debugfs_remove(ahcd->debug_dir); -} - -#endif - -/*-------------------------------------------------------------------------*/ diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-drv.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-drv.c deleted file mode 100644 index 798fd22081..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-drv.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-au1xxx.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * (C) Copyright 2002 Hewlett-Packard Company - * - * Written by Christopher Hoover <ch@hpl.hp.com> - * Based on fragments of previous driver by Russell King et al. - * - * Modified for LH7A404 from ahcd-sa1111.c - * by Durgesh Pattamatta <pattamattad@sharpsec.com> - * Modified for AMD Alchemy Au1xxx - * by Matt Porter <mporter@kernel.crashing.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/platform_device.h> -#include <linux/signal.h> - -#include <asm/bootinfo.h> -#include <asm/mach-adm5120/adm5120_defs.h> - -#ifdef DEBUG -#define HCD_DBG(f, a...) printk(KERN_DEBUG "%s: " f, hcd_name, ## a) -#else -#define HCD_DBG(f, a...) do {} while (0) -#endif -#define HCD_ERR(f, a...) printk(KERN_ERR "%s: " f, hcd_name, ## a) -#define HCD_INFO(f, a...) printk(KERN_INFO "%s: " f, hcd_name, ## a) - -/*-------------------------------------------------------------------------*/ - -static int admhc_adm5120_probe(const struct hc_driver *driver, - struct platform_device *dev) -{ - int retval; - struct usb_hcd *hcd; - int irq; - struct resource *regs; - - /* sanity checks */ - regs = platform_get_resource(dev, IORESOURCE_MEM, 0); - if (!regs) { - HCD_DBG("no IOMEM resource found\n"); - return -ENODEV; - } - - irq = platform_get_irq(dev, 0); - if (irq < 0) { - HCD_DBG("no IRQ resource found\n"); - return -ENODEV; - } - - hcd = usb_create_hcd(driver, &dev->dev, "ADM5120"); - if (!hcd) - return -ENOMEM; - - hcd->rsrc_start = regs->start; - hcd->rsrc_len = regs->end - regs->start + 1; - - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - HCD_DBG("request_mem_region failed\n"); - retval = -EBUSY; - goto err_dev; - } - - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - HCD_DBG("ioremap failed\n"); - retval = -ENOMEM; - goto err_mem; - } - - admhc_hcd_init(hcd_to_admhcd(hcd)); - - retval = usb_add_hcd(hcd, irq, 0); - if (retval) - goto err_io; - - return 0; - -err_io: - iounmap(hcd->regs); -err_mem: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); -err_dev: - usb_put_hcd(hcd); - return retval; -} - - -/* may be called without controller electrically present */ -/* may be called with controller, bus, and devices active */ - -static void admhc_adm5120_remove(struct usb_hcd *hcd, - struct platform_device *dev) -{ - usb_remove_hcd(hcd); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); -} - -static int admhc_adm5120_start(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int ret; - - ret = admhc_init(ahcd); - if (ret < 0) { - HCD_ERR("unable to init %s\n", hcd->self.bus_name); - goto err; - } - - ret = admhc_run(ahcd); - if (ret < 0) { - HCD_ERR("unable to run %s\n", hcd->self.bus_name); - goto err_stop; - } - - return 0; - -err_stop: - admhc_stop(hcd); -err: - return ret; -} - -static const struct hc_driver adm5120_hc_driver = { - .description = hcd_name, - .product_desc = "ADM5120 built-in USB 1.1 Host Controller", - .hcd_priv_size = sizeof(struct admhcd), - - /* - * generic hardware linkage - */ - .irq = admhc_irq, - .flags = HCD_USB11 | HCD_MEMORY, - - /* - * basic lifecycle operations - */ - .start = admhc_adm5120_start, - .stop = admhc_stop, - .shutdown = admhc_shutdown, - - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = admhc_urb_enqueue, - .urb_dequeue = admhc_urb_dequeue, - .endpoint_disable = admhc_endpoint_disable, - - /* - * scheduling support - */ - .get_frame_number = admhc_get_frame_number, - - /* - * root hub support - */ - .hub_status_data = admhc_hub_status_data, - .hub_control = admhc_hub_control, -#ifdef CONFIG_PM - .bus_suspend = admhc_bus_suspend, - .bus_resume = admhc_bus_resume, -#endif - .start_port_reset = admhc_start_port_reset, -}; - -static int usb_hcd_adm5120_probe(struct platform_device *pdev) -{ - int ret; - - ret = admhc_adm5120_probe(&adm5120_hc_driver, pdev); - - return ret; -} - -static int usb_hcd_adm5120_remove(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - admhc_adm5120_remove(hcd, pdev); - - return 0; -} - -#ifdef CONFIG_PM -/* TODO */ -static int usb_hcd_adm5120_suspend(struct platform_device *dev) -{ - struct usb_hcd *hcd = platform_get_drvdata(dev); - - return 0; -} - -static int usb_hcd_adm5120_resume(struct platform_device *dev) -{ - struct usb_hcd *hcd = platform_get_drvdata(dev); - - return 0; -} -#else -#define usb_hcd_adm5120_suspend NULL -#define usb_hcd_adm5120_resume NULL -#endif /* CONFIG_PM */ - -static struct platform_driver usb_hcd_adm5120_driver = { - .probe = usb_hcd_adm5120_probe, - .remove = usb_hcd_adm5120_remove, - .shutdown = usb_hcd_platform_shutdown, - .suspend = usb_hcd_adm5120_suspend, - .resume = usb_hcd_adm5120_resume, - .driver = { - .name = "adm5120-hcd", - .owner = THIS_MODULE, - }, -}; - diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c deleted file mode 100644 index f721ec1ff8..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c +++ /dev/null @@ -1,843 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-hcd.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net> - * - * [ Initialisation is based on Linus' ] - * [ uhci code and gregs ahcd fragments ] - * [ (C) Copyright 1999 Linus Torvalds ] - * [ (C) Copyright 1999 Gregory P. Smith] - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/pci.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/init.h> -#include <linux/timer.h> -#include <linux/list.h> -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/hcd.h> -#include <linux/dma-mapping.h> -#include <linux/dmapool.h> -#include <linux/debugfs.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <asm/unaligned.h> -#include <asm/byteorder.h> - -#define DRIVER_VERSION "0.27.0" -#define DRIVER_AUTHOR "Gabor Juhos <juhosg@openwrt.org>" -#define DRIVER_DESC "ADMtek USB 1.1 Host Controller Driver" - -/*-------------------------------------------------------------------------*/ - -#undef ADMHC_VERBOSE_DEBUG /* not always helpful */ - -/* For initializing controller (mask in an HCFS mode too) */ -#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR - -#define ADMHC_INTR_INIT \ - (ADMHC_INTR_MIE | ADMHC_INTR_INSM | ADMHC_INTR_FATI \ - | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI) - -/*-------------------------------------------------------------------------*/ - -static const char hcd_name[] = "admhc-hcd"; - -#define STATECHANGE_DELAY msecs_to_jiffies(300) - -#include "adm5120.h" - -static void admhc_dump(struct admhcd *ahcd, int verbose); -static int admhc_init(struct admhcd *ahcd); -static void admhc_stop(struct usb_hcd *hcd); - -#include "adm5120-dbg.c" -#include "adm5120-mem.c" -#include "adm5120-pm.c" -#include "adm5120-hub.c" -#include "adm5120-q.c" - -/*-------------------------------------------------------------------------*/ - -/* - * queue up an urb for anything except the root hub - */ -static int admhc_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, - gfp_t mem_flags) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - struct ed *ed; - struct urb_priv *urb_priv; - unsigned int pipe = urb->pipe; - int td_cnt = 0; - unsigned long flags; - int ret = 0; - -#ifdef ADMHC_VERBOSE_DEBUG - spin_lock_irqsave(&ahcd->lock, flags); - urb_print(ahcd, urb, "ENQEUE", usb_pipein(pipe), -EINPROGRESS); - spin_unlock_irqrestore(&ahcd->lock, flags); -#endif - - /* every endpoint has an ed, locate and maybe (re)initialize it */ - ed = ed_get(ahcd, urb->ep, urb->dev, pipe, urb->interval); - if (!ed) - return -ENOMEM; - - /* for the private part of the URB we need the number of TDs */ - switch (ed->type) { - case PIPE_CONTROL: - if (urb->transfer_buffer_length > TD_DATALEN_MAX) - /* td_submit_urb() doesn't yet handle these */ - return -EMSGSIZE; - - /* 1 TD for setup, 1 for ACK, plus ... */ - td_cnt = 2; - /* FALLTHROUGH */ - case PIPE_BULK: - /* one TD for every 4096 Bytes (can be up to 8K) */ - td_cnt += urb->transfer_buffer_length / TD_DATALEN_MAX; - /* ... and for any remaining bytes ... */ - if ((urb->transfer_buffer_length % TD_DATALEN_MAX) != 0) - td_cnt++; - /* ... and maybe a zero length packet to wrap it up */ - if (td_cnt == 0) - td_cnt++; - else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0 - && (urb->transfer_buffer_length - % usb_maxpacket(urb->dev, pipe, - usb_pipeout(pipe))) == 0) - td_cnt++; - break; - case PIPE_INTERRUPT: - /* - * for Interrupt IN/OUT transactions, each ED contains - * only 1 TD. - * TODO: check transfer_buffer_length? - */ - td_cnt = 1; - break; - case PIPE_ISOCHRONOUS: - /* number of packets from URB */ - td_cnt = urb->number_of_packets; - break; - } - - urb_priv = urb_priv_alloc(ahcd, td_cnt, mem_flags); - if (!urb_priv) - return -ENOMEM; - - urb_priv->ed = ed; - - spin_lock_irqsave(&ahcd->lock, flags); - /* don't submit to a dead HC */ - if (!HCD_HW_ACCESSIBLE(hcd)) { - ret = -ENODEV; - goto fail; - } - if (!HC_IS_RUNNING(hcd->state)) { - ret = -ENODEV; - goto fail; - } - - ret = usb_hcd_link_urb_to_ep(hcd, urb); - if (ret) - goto fail; - - /* schedule the ed if needed */ - if (ed->state == ED_IDLE) { - ret = ed_schedule(ahcd, ed); - if (ret < 0) { - usb_hcd_unlink_urb_from_ep(hcd, urb); - goto fail; - } - if (ed->type == PIPE_ISOCHRONOUS) { - u16 frame = admhc_frame_no(ahcd); - - /* delay a few frames before the first TD */ - frame += max_t (u16, 8, ed->interval); - frame &= ~(ed->interval - 1); - frame |= ed->branch; - urb->start_frame = frame; - - /* yes, only URB_ISO_ASAP is supported, and - * urb->start_frame is never used as input. - */ - } - } else if (ed->type == PIPE_ISOCHRONOUS) - urb->start_frame = ed->last_iso + ed->interval; - - /* fill the TDs and link them to the ed; and - * enable that part of the schedule, if needed - * and update count of queued periodic urbs - */ - urb->hcpriv = urb_priv; - td_submit_urb(ahcd, urb); - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "admhc_urb_enqueue", urb_priv->ed, 1); -#endif - -fail: - if (ret) - urb_priv_free(ahcd, urb_priv); - - spin_unlock_irqrestore(&ahcd->lock, flags); - return ret; -} - -/* - * decouple the URB from the HC queues (TDs, urb_priv); - * reporting is always done - * asynchronously, and we might be dealing with an urb that's - * partially transferred, or an ED with other urbs being unlinked. - */ -static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, - int status) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - unsigned long flags; - int ret; - - spin_lock_irqsave(&ahcd->lock, flags); - -#ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "DEQUEUE", 1, status); -#endif - ret = usb_hcd_check_unlink_urb(hcd, urb, status); - if (ret) { - /* Do nothing */ - ; - } else if (HC_IS_RUNNING(hcd->state)) { - struct urb_priv *urb_priv; - - /* Unless an IRQ completed the unlink while it was being - * handed to us, flag it for unlink and giveback, and force - * some upcoming INTR_SF to call finish_unlinks() - */ - urb_priv = urb->hcpriv; - if (urb_priv) { - if (urb_priv->ed->state == ED_OPER) - start_ed_unlink(ahcd, urb_priv->ed); - } - } else { - /* - * with HC dead, we won't respect hc queue pointers - * any more ... just clean up every urb's memory. - */ - if (urb->hcpriv) - finish_urb(ahcd, urb, status); - } - spin_unlock_irqrestore(&ahcd->lock, flags); - - return ret; -} - -/*-------------------------------------------------------------------------*/ - -/* frees config/altsetting state for endpoints, - * including ED memory, dummy TD, and bulk/intr data toggle - */ - -static void admhc_endpoint_disable(struct usb_hcd *hcd, - struct usb_host_endpoint *ep) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - unsigned long flags; - struct ed *ed = ep->hcpriv; - unsigned limit = 1000; - - /* ASSERT: any requests/urbs are being unlinked */ - /* ASSERT: nobody can be submitting urbs for this any more */ - - if (!ed) - return; - -#ifdef ADMHC_VERBOSE_DEBUG - spin_lock_irqsave(&ahcd->lock, flags); - admhc_dump_ed(ahcd, "EP-DISABLE", ed, 1); - spin_unlock_irqrestore(&ahcd->lock, flags); -#endif - -rescan: - spin_lock_irqsave(&ahcd->lock, flags); - - if (!HC_IS_RUNNING(hcd->state)) { -sanitize: - ed->state = ED_IDLE; - finish_unlinks(ahcd, 0); - } - - switch (ed->state) { - case ED_UNLINK: /* wait for hw to finish? */ - /* major IRQ delivery trouble loses INTR_SOFI too... */ - if (limit-- == 0) { - admhc_warn(ahcd, "IRQ INTR_SOFI lossage\n"); - goto sanitize; - } - spin_unlock_irqrestore(&ahcd->lock, flags); - schedule_timeout_uninterruptible(1); - goto rescan; - case ED_IDLE: /* fully unlinked */ - if (list_empty(&ed->td_list)) { - td_free(ahcd, ed->dummy); - ed_free(ahcd, ed); - break; - } - /* else FALL THROUGH */ - default: - /* caller was supposed to have unlinked any requests; - * that's not our job. can't recover; must leak ed. - */ - admhc_err(ahcd, "leak ed %p (#%02x) state %d%s\n", - ed, ep->desc.bEndpointAddress, ed->state, - list_empty(&ed->td_list) ? "" : " (has tds)"); - td_free(ahcd, ed->dummy); - break; - } - - ep->hcpriv = NULL; - - spin_unlock_irqrestore(&ahcd->lock, flags); -} - -static int admhc_get_frame_number(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - - return admhc_frame_no(ahcd); -} - -static void admhc_usb_reset(struct admhcd *ahcd) -{ -#if 0 - ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control); - ahcd->hc_control &= OHCI_CTRL_RWC; - admhc_writel(ahcd, ahcd->hc_control, &ahcd->regs->control); -#else - /* FIXME */ - ahcd->host_control = ADMHC_BUSS_RESET; - admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control); -#endif -} - -/* admhc_shutdown forcibly disables IRQs and DMA, helping kexec and - * other cases where the next software may expect clean state from the - * "firmware". this is bus-neutral, unlike shutdown() methods. - */ -static void -admhc_shutdown(struct usb_hcd *hcd) -{ - struct admhcd *ahcd; - - ahcd = hcd_to_admhcd(hcd); - admhc_intr_disable(ahcd, ADMHC_INTR_MIE); - admhc_dma_disable(ahcd); - admhc_usb_reset(ahcd); - /* flush the writes */ - admhc_writel_flush(ahcd); -} - -/*-------------------------------------------------------------------------* - * HC functions - *-------------------------------------------------------------------------*/ - -static void admhc_eds_cleanup(struct admhcd *ahcd) -{ - if (ahcd->ed_tails[PIPE_INTERRUPT]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_INTERRUPT]); - ahcd->ed_tails[PIPE_INTERRUPT] = NULL; - } - - if (ahcd->ed_tails[PIPE_ISOCHRONOUS]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_ISOCHRONOUS]); - ahcd->ed_tails[PIPE_ISOCHRONOUS] = NULL; - } - - if (ahcd->ed_tails[PIPE_CONTROL]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_CONTROL]); - ahcd->ed_tails[PIPE_CONTROL] = NULL; - } - - if (ahcd->ed_tails[PIPE_BULK]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_BULK]); - ahcd->ed_tails[PIPE_BULK] = NULL; - } - - ahcd->ed_head = NULL; -} - -#define ED_DUMMY_INFO (ED_SPEED_FULL | ED_SKIP) - -static int admhc_eds_init(struct admhcd *ahcd) -{ - struct ed *ed; - - ed = ed_create(ahcd, PIPE_INTERRUPT, ED_DUMMY_INFO); - if (!ed) - goto err; - - ahcd->ed_tails[PIPE_INTERRUPT] = ed; - - ed = ed_create(ahcd, PIPE_ISOCHRONOUS, ED_DUMMY_INFO); - if (!ed) - goto err; - - ahcd->ed_tails[PIPE_ISOCHRONOUS] = ed; - ed->ed_prev = ahcd->ed_tails[PIPE_INTERRUPT]; - ahcd->ed_tails[PIPE_INTERRUPT]->ed_next = ed; - ahcd->ed_tails[PIPE_INTERRUPT]->hwNextED = cpu_to_hc32(ahcd, ed->dma); - - ed = ed_create(ahcd, PIPE_CONTROL, ED_DUMMY_INFO); - if (!ed) - goto err; - - ahcd->ed_tails[PIPE_CONTROL] = ed; - ed->ed_prev = ahcd->ed_tails[PIPE_ISOCHRONOUS]; - ahcd->ed_tails[PIPE_ISOCHRONOUS]->ed_next = ed; - ahcd->ed_tails[PIPE_ISOCHRONOUS]->hwNextED = cpu_to_hc32(ahcd, ed->dma); - - ed = ed_create(ahcd, PIPE_BULK, ED_DUMMY_INFO); - if (!ed) - goto err; - - ahcd->ed_tails[PIPE_BULK] = ed; - ed->ed_prev = ahcd->ed_tails[PIPE_CONTROL]; - ahcd->ed_tails[PIPE_CONTROL]->ed_next = ed; - ahcd->ed_tails[PIPE_CONTROL]->hwNextED = cpu_to_hc32(ahcd, ed->dma); - - ahcd->ed_head = ahcd->ed_tails[PIPE_INTERRUPT]; - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "ed intr", ahcd->ed_tails[PIPE_INTERRUPT], 1); - admhc_dump_ed(ahcd, "ed isoc", ahcd->ed_tails[PIPE_ISOCHRONOUS], 1); - admhc_dump_ed(ahcd, "ed ctrl", ahcd->ed_tails[PIPE_CONTROL], 1); - admhc_dump_ed(ahcd, "ed bulk", ahcd->ed_tails[PIPE_BULK], 1); -#endif - - return 0; - -err: - admhc_eds_cleanup(ahcd); - return -ENOMEM; -} - -/* init memory, and kick BIOS/SMM off */ - -static int admhc_init(struct admhcd *ahcd) -{ - struct usb_hcd *hcd = admhcd_to_hcd(ahcd); - int ret; - - admhc_disable(ahcd); - ahcd->regs = hcd->regs; - - /* Disable HC interrupts */ - admhc_intr_disable(ahcd, ADMHC_INTR_MIE); - - /* Read the number of ports unless overridden */ - if (ahcd->num_ports == 0) - ahcd->num_ports = admhc_read_rhdesc(ahcd) & ADMHC_RH_NUMP; - - ret = admhc_mem_init(ahcd); - if (ret) - goto err; - - /* init dummy endpoints */ - ret = admhc_eds_init(ahcd); - if (ret) - goto err; - - create_debug_files(ahcd); - - return 0; - -err: - admhc_stop(hcd); - return ret; -} - -/*-------------------------------------------------------------------------*/ - -/* Start an OHCI controller, set the BUS operational - * resets USB and controller - * enable interrupts - */ -static int admhc_run(struct admhcd *ahcd) -{ - u32 val; - int first = ahcd->fminterval == 0; - struct usb_hcd *hcd = admhcd_to_hcd(ahcd); - - admhc_disable(ahcd); - - /* boot firmware should have set this up (5.1.1.3.1) */ - if (first) { - val = admhc_readl(ahcd, &ahcd->regs->fminterval); - ahcd->fminterval = val & ADMHC_SFI_FI_MASK; - if (ahcd->fminterval != FI) - admhc_dbg(ahcd, "fminterval delta %d\n", - ahcd->fminterval - FI); - ahcd->fminterval |= - (FSLDP(ahcd->fminterval) << ADMHC_SFI_FSLDP_SHIFT); - /* also: power/overcurrent flags in rhdesc */ - } - -#if 0 /* TODO: not applicable */ - /* Reset USB nearly "by the book". RemoteWakeupConnected has - * to be checked in case boot firmware (BIOS/SMM/...) has set up - * wakeup in a way the bus isn't aware of (e.g., legacy PCI PM). - * If the bus glue detected wakeup capability then it should - * already be enabled; if so we'll just enable it again. - */ - if ((ahcd->hc_control & OHCI_CTRL_RWC) != 0) - device_set_wakeup_capable(hcd->self.controller, 1); -#endif - - switch (ahcd->host_control & ADMHC_HC_BUSS) { - case ADMHC_BUSS_OPER: - val = 0; - break; - case ADMHC_BUSS_SUSPEND: - /* FALLTHROUGH ? */ - case ADMHC_BUSS_RESUME: - ahcd->host_control = ADMHC_BUSS_RESUME; - val = 10 /* msec wait */; - break; - /* case ADMHC_BUSS_RESET: */ - default: - ahcd->host_control = ADMHC_BUSS_RESET; - val = 50 /* msec wait */; - break; - } - admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control); - - /* flush the writes */ - admhc_writel_flush(ahcd); - - msleep(val); - val = admhc_read_rhdesc(ahcd); - if (!(val & ADMHC_RH_NPS)) { - /* power down each port */ - for (val = 0; val < ahcd->num_ports; val++) - admhc_write_portstatus(ahcd, val, ADMHC_PS_CPP); - } - /* flush those writes */ - admhc_writel_flush(ahcd); - - /* 2msec timelimit here means no irqs/preempt */ - spin_lock_irq(&ahcd->lock); - - admhc_writel(ahcd, ADMHC_CTRL_SR, &ahcd->regs->gencontrol); - val = 30; /* ... allow extra time */ - while ((admhc_readl(ahcd, &ahcd->regs->gencontrol) & ADMHC_CTRL_SR) != 0) { - if (--val == 0) { - spin_unlock_irq(&ahcd->lock); - admhc_err(ahcd, "USB HC reset timed out!\n"); - return -1; - } - udelay(1); - } - - /* enable HOST mode, before access any host specific register */ - admhc_writel(ahcd, ADMHC_CTRL_UHFE, &ahcd->regs->gencontrol); - - /* Tell the controller where the descriptor list is */ - admhc_writel(ahcd, (u32)ahcd->ed_head->dma, &ahcd->regs->hosthead); - - periodic_reinit(ahcd); - - /* use rhsc irqs after khubd is fully initialized */ - set_bit(HCD_FLAG_POLL_RH, &hcd->flags); - hcd->uses_new_polling = 1; - -#if 0 - /* wake on ConnectStatusChange, matching external hubs */ - admhc_writel(ahcd, RH_HS_DRWE, &ahcd->regs->roothub.status); -#else - /* FIXME roothub_write_status (ahcd, ADMHC_RH_DRWE); */ -#endif - - /* Choose the interrupts we care about now, others later on demand */ - admhc_intr_ack(ahcd, ~0); - admhc_intr_enable(ahcd, ADMHC_INTR_INIT); - - admhc_writel(ahcd, ADMHC_RH_NPS | ADMHC_RH_LPSC, &ahcd->regs->rhdesc); - - /* flush those writes */ - admhc_writel_flush(ahcd); - - /* start controller operations */ - ahcd->host_control = ADMHC_BUSS_OPER; - admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control); - - val = 20; - while ((admhc_readl(ahcd, &ahcd->regs->host_control) - & ADMHC_HC_BUSS) != ADMHC_BUSS_OPER) { - if (--val == 0) { - spin_unlock_irq(&ahcd->lock); - admhc_err(ahcd, "unable to setup operational mode!\n"); - return -1; - } - mdelay(1); - } - - hcd->state = HC_STATE_RUNNING; - - ahcd->next_statechange = jiffies + STATECHANGE_DELAY; - -#if 0 - /* FIXME: enabling DMA is always failed here for an unknown reason */ - admhc_dma_enable(ahcd); - - val = 200; - while ((admhc_readl(ahcd, &ahcd->regs->host_control) - & ADMHC_HC_DMAE) != ADMHC_HC_DMAE) { - if (--val == 0) { - spin_unlock_irq(&ahcd->lock); - admhc_err(ahcd, "unable to enable DMA!\n"); - admhc_dump(ahcd, 1); - return -1; - } - mdelay(1); - } - -#endif - - spin_unlock_irq(&ahcd->lock); - - mdelay(ADMHC_POTPGT); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* an interrupt happens */ - -static irqreturn_t admhc_irq(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - struct admhcd_regs __iomem *regs = ahcd->regs; - u32 ints; - - ints = admhc_readl(ahcd, ®s->int_status); - if ((ints & ADMHC_INTR_INTA) == 0) { - /* no unmasked interrupt status is set */ - return IRQ_NONE; - } - - ints &= admhc_readl(ahcd, ®s->int_enable); - - if (ints & ADMHC_INTR_FATI) { - /* e.g. due to PCI Master/Target Abort */ - admhc_disable(ahcd); - admhc_err(ahcd, "Fatal Error, controller disabled\n"); - admhc_dump(ahcd, 1); - admhc_usb_reset(ahcd); - } - - if (ints & ADMHC_INTR_BABI) { - admhc_intr_disable(ahcd, ADMHC_INTR_BABI); - admhc_intr_ack(ahcd, ADMHC_INTR_BABI); - admhc_err(ahcd, "Babble Detected\n"); - } - - if (ints & ADMHC_INTR_INSM) { - admhc_vdbg(ahcd, "Root Hub Status Change\n"); - ahcd->next_statechange = jiffies + STATECHANGE_DELAY; - admhc_intr_ack(ahcd, ADMHC_INTR_RESI | ADMHC_INTR_INSM); - - /* NOTE: Vendors didn't always make the same implementation - * choices for RHSC. Many followed the spec; RHSC triggers - * on an edge, like setting and maybe clearing a port status - * change bit. With others it's level-triggered, active - * until khubd clears all the port status change bits. We'll - * always disable it here and rely on polling until khubd - * re-enables it. - */ - admhc_intr_disable(ahcd, ADMHC_INTR_INSM); - usb_hcd_poll_rh_status(hcd); - } else if (ints & ADMHC_INTR_RESI) { - /* For connect and disconnect events, we expect the controller - * to turn on RHSC along with RD. But for remote wakeup events - * this might not happen. - */ - admhc_vdbg(ahcd, "Resume Detect\n"); - admhc_intr_ack(ahcd, ADMHC_INTR_RESI); - set_bit(HCD_FLAG_POLL_RH, &hcd->flags); - if (ahcd->autostop) { - spin_lock(&ahcd->lock); - admhc_rh_resume(ahcd); - spin_unlock(&ahcd->lock); - } else - usb_hcd_resume_root_hub(hcd); - } - - if (ints & ADMHC_INTR_TDC) { - admhc_vdbg(ahcd, "Transfer Descriptor Complete\n"); - admhc_intr_ack(ahcd, ADMHC_INTR_TDC); - if (HC_IS_RUNNING(hcd->state)) - admhc_intr_disable(ahcd, ADMHC_INTR_TDC); - spin_lock(&ahcd->lock); - admhc_td_complete(ahcd); - spin_unlock(&ahcd->lock); - if (HC_IS_RUNNING(hcd->state)) - admhc_intr_enable(ahcd, ADMHC_INTR_TDC); - } - - if (ints & ADMHC_INTR_SO) { - /* could track INTR_SO to reduce available PCI/... bandwidth */ - admhc_vdbg(ahcd, "Schedule Overrun\n"); - } - -#if 1 - spin_lock(&ahcd->lock); - if (ahcd->ed_rm_list) - finish_unlinks(ahcd, admhc_frame_no(ahcd)); - - if ((ints & ADMHC_INTR_SOFI) != 0 && !ahcd->ed_rm_list - && HC_IS_RUNNING(hcd->state)) - admhc_intr_disable(ahcd, ADMHC_INTR_SOFI); - spin_unlock(&ahcd->lock); -#else - if (ints & ADMHC_INTR_SOFI) { - admhc_vdbg(ahcd, "Start Of Frame\n"); - spin_lock(&ahcd->lock); - - /* handle any pending ED removes */ - finish_unlinks(ahcd, admhc_frameno(ahcd)); - - /* leaving INTR_SOFI enabled when there's still unlinking - * to be done in the (next frame). - */ - if ((ahcd->ed_rm_list == NULL) || - HC_IS_RUNNING(hcd->state) == 0) - /* - * disable INTR_SOFI if there are no unlinking to be - * done (in the next frame) - */ - admhc_intr_disable(ahcd, ADMHC_INTR_SOFI); - - spin_unlock(&ahcd->lock); - } -#endif - - if (HC_IS_RUNNING(hcd->state)) { - admhc_intr_ack(ahcd, ints); - admhc_intr_enable(ahcd, ADMHC_INTR_MIE); - admhc_writel_flush(ahcd); - } - - return IRQ_HANDLED; -} - -/*-------------------------------------------------------------------------*/ - -static void admhc_stop(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - - admhc_dump(ahcd, 1); - - flush_scheduled_work(); - - admhc_usb_reset(ahcd); - admhc_intr_disable(ahcd, ADMHC_INTR_MIE); - - free_irq(hcd->irq, hcd); - hcd->irq = -1; - - remove_debug_files(ahcd); - admhc_eds_cleanup(ahcd); - admhc_mem_cleanup(ahcd); -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_ADM5120 -#include "adm5120-drv.c" -#define PLATFORM_DRIVER usb_hcd_adm5120_driver -#endif - -#if !defined(PLATFORM_DRIVER) -#error "missing bus glue for admhc-hcd" -#endif - -#define DRIVER_INFO DRIVER_DESC " version " DRIVER_VERSION - -static int __init admhc_hcd_mod_init(void) -{ - int ret = 0; - - if (usb_disabled()) - return -ENODEV; - - pr_info("%s: " DRIVER_INFO "\n", hcd_name); - pr_info("%s: block sizes: ed %Zd td %Zd\n", hcd_name, - sizeof(struct ed), sizeof(struct td)); - set_bit(USB_OHCI_LOADED, &usb_hcds_loaded); - -#ifdef DEBUG - admhc_debug_root = debugfs_create_dir("admhc", usb_debug_root); - if (!admhc_debug_root) { - ret = -ENOENT; - goto error_debug; - } -#endif - -#ifdef PLATFORM_DRIVER - ret = platform_driver_register(&PLATFORM_DRIVER); - if (ret < 0) - goto error_platform; -#endif - - return ret; - -#ifdef PLATFORM_DRIVER - platform_driver_unregister(&PLATFORM_DRIVER); -error_platform: -#endif - -#ifdef DEBUG - debugfs_remove(admhc_debug_root); - admhc_debug_root = NULL; -error_debug: -#endif - clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded); - return ret; -} -module_init(admhc_hcd_mod_init); - -static void __exit admhc_hcd_mod_exit(void) -{ - platform_driver_unregister(&PLATFORM_DRIVER); -#ifdef DEBUG - debugfs_remove(admhc_debug_root); -#endif - clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded); -} -module_exit(admhc_hcd_mod_exit); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_INFO); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL v2"); diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hub.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hub.c deleted file mode 100644 index 8cabaf902d..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hub.c +++ /dev/null @@ -1,430 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-hub.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -/*-------------------------------------------------------------------------*/ - -/* - * ADM5120 Root Hub ... the nonsharable stuff - */ - -#define dbg_port(hc, label, num, value) \ - admhc_dbg(hc, \ - "%s port%d " \ - "= 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ - label, num, value, \ - (value & ADMHC_PS_PRSC) ? " PRSC" : "", \ - (value & ADMHC_PS_OCIC) ? " OCIC" : "", \ - (value & ADMHC_PS_PSSC) ? " PSSC" : "", \ - (value & ADMHC_PS_PESC) ? " PESC" : "", \ - (value & ADMHC_PS_CSC) ? " CSC" : "", \ - \ - (value & ADMHC_PS_LSDA) ? " LSDA" : "", \ - (value & ADMHC_PS_PPS) ? " PPS" : "", \ - (value & ADMHC_PS_PRS) ? " PRS" : "", \ - (value & ADMHC_PS_POCI) ? " POCI" : "", \ - (value & ADMHC_PS_PSS) ? " PSS" : "", \ - \ - (value & ADMHC_PS_PES) ? " PES" : "", \ - (value & ADMHC_PS_CCS) ? " CCS" : "" \ - ); - -#define dbg_port_write(hc, label, num, value) \ - admhc_dbg(hc, \ - "%s port%d " \ - "= 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ - label, num, value, \ - (value & ADMHC_PS_PRSC) ? " PRSC" : "", \ - (value & ADMHC_PS_OCIC) ? " OCIC" : "", \ - (value & ADMHC_PS_PSSC) ? " PSSC" : "", \ - (value & ADMHC_PS_PESC) ? " PESC" : "", \ - (value & ADMHC_PS_CSC) ? " CSC" : "", \ - \ - (value & ADMHC_PS_CPP) ? " CPP" : "", \ - (value & ADMHC_PS_SPP) ? " SPP" : "", \ - (value & ADMHC_PS_SPR) ? " SPR" : "", \ - (value & ADMHC_PS_CPS) ? " CPS" : "", \ - (value & ADMHC_PS_SPS) ? " SPS" : "", \ - \ - (value & ADMHC_PS_SPE) ? " SPE" : "", \ - (value & ADMHC_PS_CPE) ? " CPE" : "" \ - ); - -/*-------------------------------------------------------------------------*/ - -/* build "status change" packet (one or two bytes) from HC registers */ - -static int -admhc_hub_status_data(struct usb_hcd *hcd, char *buf) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int i, changed = 0, length = 1; - int any_connected = 0; - unsigned long flags; - u32 status; - - spin_lock_irqsave(&ahcd->lock, flags); - if (!HCD_HW_ACCESSIBLE(hcd)) - goto done; - - /* init status */ - status = admhc_read_rhdesc(ahcd); - if (status & (ADMHC_RH_LPSC | ADMHC_RH_OCIC)) - buf[0] = changed = 1; - else - buf[0] = 0; - if (ahcd->num_ports > 7) { - buf[1] = 0; - length++; - } - - /* look at each port */ - for (i = 0; i < ahcd->num_ports; i++) { - status = admhc_read_portstatus(ahcd, i); - - /* can't autostop if ports are connected */ - any_connected |= (status & ADMHC_PS_CCS); - - if (status & (ADMHC_PS_CSC | ADMHC_PS_PESC | ADMHC_PS_PSSC - | ADMHC_PS_OCIC | ADMHC_PS_PRSC)) { - changed = 1; - if (i < 7) - buf[0] |= 1 << (i + 1); - else - buf[1] |= 1 << (i - 7); - } - } - - if (admhc_root_hub_state_changes(ahcd, changed, - any_connected)) - set_bit(HCD_FLAG_POLL_RH, &hcd->flags); - else - clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - -done: - spin_unlock_irqrestore(&ahcd->lock, flags); - - return changed ? length : 0; -} - -/*-------------------------------------------------------------------------*/ - -static int admhc_get_hub_descriptor(struct admhcd *ahcd, char *buf) -{ - struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf; - u32 rh = admhc_read_rhdesc(ahcd); - u16 temp; - - desc->bDescriptorType = USB_DT_HUB; /* Hub-descriptor */ - desc->bPwrOn2PwrGood = ADMHC_POTPGT/2; /* use default value */ - desc->bHubContrCurrent = 0x00; /* 0mA */ - - desc->bNbrPorts = ahcd->num_ports; - temp = 1 + (ahcd->num_ports / 8); - desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; - - /* FIXME */ - temp = 0; - if (rh & ADMHC_RH_NPS) /* no power switching? */ - temp |= 0x0002; - if (rh & ADMHC_RH_PSM) /* per-port power switching? */ - temp |= 0x0001; - if (rh & ADMHC_RH_NOCP) /* no overcurrent reporting? */ - temp |= 0x0010; - else if (rh & ADMHC_RH_OCPM) /* per-port overcurrent reporting? */ - temp |= 0x0008; - desc->wHubCharacteristics = (__force __u16)cpu_to_hc16(ahcd, temp); - - /* ports removable, and usb 1.0 legacy PortPwrCtrlMask */ - desc->u.hs.DeviceRemovable[0] = 0; - desc->u.hs.DeviceRemovable[0] = ~0; - - return 0; -} - -static int admhc_get_hub_status(struct admhcd *ahcd, char *buf) -{ - struct usb_hub_status *hs = (struct usb_hub_status *)buf; - u32 t = admhc_read_rhdesc(ahcd); - u16 status, change; - - status = 0; - status |= (t & ADMHC_RH_LPS) ? HUB_STATUS_LOCAL_POWER : 0; - status |= (t & ADMHC_RH_OCI) ? HUB_STATUS_OVERCURRENT : 0; - - change = 0; - change |= (t & ADMHC_RH_LPSC) ? HUB_CHANGE_LOCAL_POWER : 0; - change |= (t & ADMHC_RH_OCIC) ? HUB_CHANGE_OVERCURRENT : 0; - - hs->wHubStatus = (__force __u16)cpu_to_hc16(ahcd, status); - hs->wHubChange = (__force __u16)cpu_to_hc16(ahcd, change); - - return 0; -} - -static int admhc_get_port_status(struct admhcd *ahcd, unsigned port, char *buf) -{ - struct usb_port_status *ps = (struct usb_port_status *)buf; - u32 t = admhc_read_portstatus(ahcd, port); - u16 status, change; - - status = 0; - status |= (t & ADMHC_PS_CCS) ? USB_PORT_STAT_CONNECTION : 0; - status |= (t & ADMHC_PS_PES) ? USB_PORT_STAT_ENABLE : 0; - status |= (t & ADMHC_PS_PSS) ? USB_PORT_STAT_SUSPEND : 0; - status |= (t & ADMHC_PS_POCI) ? USB_PORT_STAT_OVERCURRENT : 0; - status |= (t & ADMHC_PS_PRS) ? USB_PORT_STAT_RESET : 0; - status |= (t & ADMHC_PS_PPS) ? USB_PORT_STAT_POWER : 0; - status |= (t & ADMHC_PS_LSDA) ? USB_PORT_STAT_LOW_SPEED : 0; - - change = 0; - change |= (t & ADMHC_PS_CSC) ? USB_PORT_STAT_C_CONNECTION : 0; - change |= (t & ADMHC_PS_PESC) ? USB_PORT_STAT_C_ENABLE : 0; - change |= (t & ADMHC_PS_PSSC) ? USB_PORT_STAT_C_SUSPEND : 0; - change |= (t & ADMHC_PS_OCIC) ? USB_PORT_STAT_C_OVERCURRENT : 0; - change |= (t & ADMHC_PS_PRSC) ? USB_PORT_STAT_C_RESET : 0; - - ps->wPortStatus = (__force __u16)cpu_to_hc16(ahcd, status); - ps->wPortChange = (__force __u16)cpu_to_hc16(ahcd, change); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_OTG - -static int admhc_start_port_reset(struct usb_hcd *hcd, unsigned port) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - u32 status; - - if (!port) - return -EINVAL; - port--; - - /* start port reset before HNP protocol times out */ - status = admhc_read_portstatus(ahcd, port); - if (!(status & ADMHC_PS_CCS)) - return -ENODEV; - - /* khubd will finish the reset later */ - admhc_write_portstatus(ahcd, port, ADMHC_PS_PRS); - return 0; -} - -static void start_hnp(struct admhcd *ahcd); - -#else - -#define admhc_start_port_reset NULL - -#endif - -/*-------------------------------------------------------------------------*/ - - -/* See usb 7.1.7.5: root hubs must issue at least 50 msec reset signaling, - * not necessarily continuous ... to guard against resume signaling. - * The short timeout is safe for non-root hubs, and is backward-compatible - * with earlier Linux hosts. - */ -#ifdef CONFIG_USB_SUSPEND -#define PORT_RESET_MSEC 50 -#else -#define PORT_RESET_MSEC 10 -#endif - -/* this timer value might be vendor-specific ... */ -#define PORT_RESET_HW_MSEC 10 - -/* wrap-aware logic morphed from <linux/jiffies.h> */ -#define tick_before(t1, t2) ((s16)(((s16)(t1)) - ((s16)(t2))) < 0) - -/* called from some task, normally khubd */ -static inline int admhc_port_reset(struct admhcd *ahcd, unsigned port) -{ - u32 t; - - admhc_vdbg(ahcd, "reset port%d\n", port); - t = admhc_read_portstatus(ahcd, port); - if (!(t & ADMHC_PS_CCS)) - return -ENODEV; - - admhc_write_portstatus(ahcd, port, ADMHC_PS_SPR); - mdelay(10); - admhc_write_portstatus(ahcd, port, (ADMHC_PS_SPE | ADMHC_PS_CSC)); - mdelay(100); - - return 0; -} - -static inline int admhc_port_enable(struct admhcd *ahcd, unsigned port) -{ - u32 t; - - admhc_vdbg(ahcd, "enable port%d\n", port); - t = admhc_read_portstatus(ahcd, port); - if (!(t & ADMHC_PS_CCS)) - return -ENODEV; - - admhc_write_portstatus(ahcd, port, ADMHC_PS_SPE); - - return 0; -} - -static inline int admhc_port_disable(struct admhcd *ahcd, unsigned port) -{ - u32 t; - - admhc_vdbg(ahcd, "disable port%d\n", port); - t = admhc_read_portstatus(ahcd, port); - if (!(t & ADMHC_PS_CCS)) - return -ENODEV; - - admhc_write_portstatus(ahcd, port, ADMHC_PS_CPE); - - return 0; -} - -static inline int admhc_port_write(struct admhcd *ahcd, unsigned port, - u32 val) -{ -#ifdef ADMHC_VERBOSE_DEBUG - dbg_port_write(ahcd, "write", port, val); -#endif - admhc_write_portstatus(ahcd, port, val); - - return 0; -} - -static int admhc_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, - u16 wIndex, char *buf, u16 wLength) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int ports = ahcd->num_ports; - int ret = 0; - - if (unlikely(!HCD_HW_ACCESSIBLE(hcd))) - return -ESHUTDOWN; - - switch (typeReq) { - case ClearHubFeature: - switch (wValue) { - case C_HUB_OVER_CURRENT: -#if 0 /* FIXME */ - admhc_writel(ahcd, ADMHC_RH_OCIC, - &ahcd->regs->roothub.status); -#endif - case C_HUB_LOCAL_POWER: - break; - default: - goto error; - } - break; - case ClearPortFeature: - if (!wIndex || wIndex > ports) - goto error; - wIndex--; - - switch (wValue) { - case USB_PORT_FEAT_ENABLE: - ret = admhc_port_disable(ahcd, wIndex); - break; - case USB_PORT_FEAT_SUSPEND: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_CPS); - break; - case USB_PORT_FEAT_POWER: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_CPP); - break; - case USB_PORT_FEAT_C_CONNECTION: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_CSC); - break; - case USB_PORT_FEAT_C_ENABLE: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_PESC); - break; - case USB_PORT_FEAT_C_SUSPEND: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_PSSC); - break; - case USB_PORT_FEAT_C_OVER_CURRENT: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_OCIC); - break; - case USB_PORT_FEAT_C_RESET: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_PRSC); - break; - default: - goto error; - } - break; - case GetHubDescriptor: - ret = admhc_get_hub_descriptor(ahcd, buf); - break; - case GetHubStatus: - ret = admhc_get_hub_status(ahcd, buf); - break; - case GetPortStatus: - if (!wIndex || wIndex > ports) - goto error; - wIndex--; - - ret = admhc_get_port_status(ahcd, wIndex, buf); - break; - case SetHubFeature: - switch (wValue) { - case C_HUB_OVER_CURRENT: - /* FIXME: this can be cleared, yes? */ - case C_HUB_LOCAL_POWER: - break; - default: - goto error; - } - break; - case SetPortFeature: - if (!wIndex || wIndex > ports) - goto error; - wIndex--; - - switch (wValue) { - case USB_PORT_FEAT_ENABLE: - ret = admhc_port_enable(ahcd, wIndex); - break; - case USB_PORT_FEAT_RESET: - ret = admhc_port_reset(ahcd, wIndex); - break; - case USB_PORT_FEAT_SUSPEND: -#ifdef CONFIG_USB_OTG - if (hcd->self.otg_port == (wIndex + 1) - && hcd->self.b_hnp_enable) - start_hnp(ahcd); - else -#endif - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_SPS); - break; - case USB_PORT_FEAT_POWER: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_SPP); - break; - default: - goto error; - } - break; - - default: -error: - /* "protocol stall" on error */ - ret = -EPIPE; - } - - return ret; -} - diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-mem.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-mem.c deleted file mode 100644 index 79fff70e2d..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-mem.c +++ /dev/null @@ -1,202 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-mem.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -/*-------------------------------------------------------------------------*/ - -/* - * OHCI deals with three types of memory: - * - data used only by the HCD ... kmalloc is fine - * - async and periodic schedules, shared by HC and HCD ... these - * need to use dma_pool or dma_alloc_coherent - * - driver buffers, read/written by HC ... the hcd glue or the - * device driver provides us with dma addresses - * - * There's also "register" data, which is memory mapped. - * No memory seen by this driver (or any HCD) may be paged out. - */ - -/*-------------------------------------------------------------------------*/ - -static void admhc_hcd_init(struct admhcd *ahcd) -{ - ahcd->next_statechange = jiffies; - spin_lock_init(&ahcd->lock); - INIT_LIST_HEAD(&ahcd->pending); -} - -/*-------------------------------------------------------------------------*/ - -static int admhc_mem_init(struct admhcd *ahcd) -{ - ahcd->td_cache = dma_pool_create("admhc_td", - admhcd_to_hcd(ahcd)->self.controller, - sizeof(struct td), - TD_ALIGN, /* byte alignment */ - 0 /* no page-crossing issues */ - ); - if (!ahcd->td_cache) - goto err; - - ahcd->ed_cache = dma_pool_create("admhc_ed", - admhcd_to_hcd(ahcd)->self.controller, - sizeof(struct ed), - ED_ALIGN, /* byte alignment */ - 0 /* no page-crossing issues */ - ); - if (!ahcd->ed_cache) - goto err_td_cache; - - return 0; - -err_td_cache: - dma_pool_destroy(ahcd->td_cache); - ahcd->td_cache = NULL; -err: - return -ENOMEM; -} - -static void admhc_mem_cleanup(struct admhcd *ahcd) -{ - if (ahcd->td_cache) { - dma_pool_destroy(ahcd->td_cache); - ahcd->td_cache = NULL; - } - - if (ahcd->ed_cache) { - dma_pool_destroy(ahcd->ed_cache); - ahcd->ed_cache = NULL; - } -} - -/*-------------------------------------------------------------------------*/ - -/* ahcd "done list" processing needs this mapping */ -static inline struct td *dma_to_td(struct admhcd *ahcd, dma_addr_t td_dma) -{ - struct td *td; - - td_dma &= TD_MASK; - td = ahcd->td_hash[TD_HASH_FUNC(td_dma)]; - while (td && td->td_dma != td_dma) - td = td->td_hash; - - return td; -} - -/* TDs ... */ -static struct td *td_alloc(struct admhcd *ahcd, gfp_t mem_flags) -{ - dma_addr_t dma; - struct td *td; - - td = dma_pool_alloc(ahcd->td_cache, mem_flags, &dma); - if (!td) - return NULL; - - /* in case ahcd fetches it, make it look dead */ - memset(td, 0, sizeof *td); - td->hwNextTD = cpu_to_hc32(ahcd, dma); - td->td_dma = dma; - /* hashed in td_fill */ - - return td; -} - -static void td_free(struct admhcd *ahcd, struct td *td) -{ - struct td **prev = &ahcd->td_hash[TD_HASH_FUNC(td->td_dma)]; - - while (*prev && *prev != td) - prev = &(*prev)->td_hash; - if (*prev) - *prev = td->td_hash; -#if 0 - /* TODO: remove */ - else if ((td->hwINFO & cpu_to_hc32(ahcd, TD_DONE)) != 0) - admhc_dbg(ahcd, "no hash for td %p\n", td); -#else - else if ((td->flags & TD_FLAG_DONE) != 0) - admhc_dbg(ahcd, "no hash for td %p\n", td); -#endif - dma_pool_free(ahcd->td_cache, td, td->td_dma); -} - -/*-------------------------------------------------------------------------*/ - -/* EDs ... */ -static struct ed *ed_alloc(struct admhcd *ahcd, gfp_t mem_flags) -{ - dma_addr_t dma; - struct ed *ed; - - ed = dma_pool_alloc(ahcd->ed_cache, mem_flags, &dma); - if (!ed) - return NULL; - - memset(ed, 0, sizeof(*ed)); - ed->dma = dma; - - INIT_LIST_HEAD(&ed->td_list); - INIT_LIST_HEAD(&ed->urb_list); - - return ed; -} - -static void ed_free(struct admhcd *ahcd, struct ed *ed) -{ - dma_pool_free(ahcd->ed_cache, ed, ed->dma); -} - -/*-------------------------------------------------------------------------*/ - -/* URB priv ... */ -static void urb_priv_free(struct admhcd *ahcd, struct urb_priv *urb_priv) -{ - int i; - - for (i = 0; i < urb_priv->td_cnt; i++) - if (urb_priv->td[i]) - td_free(ahcd, urb_priv->td[i]); - - list_del(&urb_priv->pending); - kfree(urb_priv); -} - -static struct urb_priv *urb_priv_alloc(struct admhcd *ahcd, int num_tds, - gfp_t mem_flags) -{ - struct urb_priv *priv; - - /* allocate the private part of the URB */ - priv = kzalloc(sizeof(*priv) + sizeof(struct td) * num_tds, mem_flags); - if (!priv) - goto err; - - /* allocate the TDs (deferring hash chain updates) */ - for (priv->td_cnt = 0; priv->td_cnt < num_tds; priv->td_cnt++) { - priv->td[priv->td_cnt] = td_alloc(ahcd, mem_flags); - if (priv->td[priv->td_cnt] == NULL) - goto err_free; - } - - INIT_LIST_HEAD(&priv->pending); - - return priv; - -err_free: - urb_priv_free(ahcd, priv); -err: - return NULL; -} diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-pm.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-pm.c deleted file mode 100644 index 7d7fc2438f..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-pm.c +++ /dev/null @@ -1,449 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from fragments of the OHCI driver. - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#define OHCI_SCHED_ENABLES \ - (OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE) - -#ifdef CONFIG_PM -static int admhc_restart(struct admhcd *ahcd); - -static int admhc_rh_suspend(struct admhcd *ahcd, int autostop) -__releases(ahcd->lock) -__acquires(ahcd->lock) -{ - int status = 0; - - ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control); - switch (ahcd->hc_control & OHCI_CTRL_HCFS) { - case OHCI_USB_RESUME: - admhc_dbg(ahcd, "resume/suspend?\n"); - ahcd->hc_control &= ~OHCI_CTRL_HCFS; - ahcd->hc_control |= OHCI_USB_RESET; - admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control); - (void) admhc_readl(ahcd, &ahcd->regs->control); - /* FALL THROUGH */ - case OHCI_USB_RESET: - status = -EBUSY; - admhc_dbg(ahcd, "needs reinit!\n"); - goto done; - case OHCI_USB_SUSPEND: - if (!ahcd->autostop) { - admhc_dbg(ahcd, "already suspended\n"); - goto done; - } - } - admhc_dbg(ahcd, "%s root hub\n", - autostop ? "auto-stop" : "suspend"); - - /* First stop any processing */ - if (!autostop && (ahcd->hc_control & OHCI_SCHED_ENABLES)) { - ahcd->hc_control &= ~OHCI_SCHED_ENABLES; - admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control); - ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control); - admhc_writel(ahcd, OHCI_INTR_SF, &ahcd->regs->intrstatus); - - /* sched disables take effect on the next frame, - * then the last WDH could take 6+ msec - */ - admhc_dbg(ahcd, "stopping schedules ...\n"); - ahcd->autostop = 0; - spin_unlock_irq (&ahcd->lock); - msleep (8); - spin_lock_irq(&ahcd->lock); - } - dl_done_list (ahcd); - finish_unlinks (ahcd, admhc_frame_no(ahcd)); - - /* maybe resume can wake root hub */ - if (device_may_wakeup(&admhcd_to_hcd(ahcd)->self.root_hub->dev) || - autostop) - ahcd->hc_control |= OHCI_CTRL_RWE; - else { - admhc_writel(ahcd, OHCI_INTR_RHSC, &ahcd->regs->intrdisable); - ahcd->hc_control &= ~OHCI_CTRL_RWE; - } - - /* Suspend hub ... this is the "global (to this bus) suspend" mode, - * which doesn't imply ports will first be individually suspended. - */ - ahcd->hc_control &= ~OHCI_CTRL_HCFS; - ahcd->hc_control |= OHCI_USB_SUSPEND; - admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control); - (void) admhc_readl(ahcd, &ahcd->regs->control); - - /* no resumes until devices finish suspending */ - if (!autostop) { - ahcd->next_statechange = jiffies + msecs_to_jiffies (5); - ahcd->autostop = 0; - } - -done: - return status; -} - -static inline struct ed *find_head(struct ed *ed) -{ - /* for bulk and control lists */ - while (ed->ed_prev) - ed = ed->ed_prev; - return ed; -} - -/* caller has locked the root hub */ -static int admhc_rh_resume(struct admhcd *ahcd) -__releases(ahcd->lock) -__acquires(ahcd->lock) -{ - struct usb_hcd *hcd = admhcd_to_hcd (ahcd); - u32 temp, enables; - int status = -EINPROGRESS; - int autostopped = ahcd->autostop; - - ahcd->autostop = 0; - ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control); - - if (ahcd->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) { - /* this can happen after resuming a swsusp snapshot */ - if (hcd->state == HC_STATE_RESUMING) { - admhc_dbg(ahcd, "BIOS/SMM active, control %03x\n", - ahcd->hc_control); - status = -EBUSY; - /* this happens when pmcore resumes HC then root */ - } else { - admhc_dbg(ahcd, "duplicate resume\n"); - status = 0; - } - } else switch (ahcd->hc_control & OHCI_CTRL_HCFS) { - case OHCI_USB_SUSPEND: - ahcd->hc_control &= ~(OHCI_CTRL_HCFS|OHCI_SCHED_ENABLES); - ahcd->hc_control |= OHCI_USB_RESUME; - admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control); - (void) admhc_readl(ahcd, &ahcd->regs->control); - admhc_dbg(ahcd, "%s root hub\n", - autostopped ? "auto-start" : "resume"); - break; - case OHCI_USB_RESUME: - /* HCFS changes sometime after INTR_RD */ - admhc_dbg(ahcd, "%swakeup root hub\n", - autostopped ? "auto-" : ""); - break; - case OHCI_USB_OPER: - /* this can happen after resuming a swsusp snapshot */ - admhc_dbg(ahcd, "snapshot resume? reinit\n"); - status = -EBUSY; - break; - default: /* RESET, we lost power */ - admhc_dbg(ahcd, "lost power\n"); - status = -EBUSY; - } - if (status == -EBUSY) { - if (!autostopped) { - spin_unlock_irq (&ahcd->lock); - (void) ahcd_init (ahcd); - status = admhc_restart (ahcd); - spin_lock_irq(&ahcd->lock); - } - return status; - } - if (status != -EINPROGRESS) - return status; - if (autostopped) - goto skip_resume; - spin_unlock_irq (&ahcd->lock); - - /* Some controllers (lucent erratum) need extra-long delays */ - msleep (20 /* usb 11.5.1.10 */ + 12 /* 32 msec counter */ + 1); - - temp = admhc_readl(ahcd, &ahcd->regs->control); - temp &= OHCI_CTRL_HCFS; - if (temp != OHCI_USB_RESUME) { - admhc_err (ahcd, "controller won't resume\n"); - spin_lock_irq(&ahcd->lock); - return -EBUSY; - } - - /* disable old schedule state, reinit from scratch */ - admhc_writel(ahcd, 0, &ahcd->regs->ed_controlhead); - admhc_writel(ahcd, 0, &ahcd->regs->ed_controlcurrent); - admhc_writel(ahcd, 0, &ahcd->regs->ed_bulkhead); - admhc_writel(ahcd, 0, &ahcd->regs->ed_bulkcurrent); - admhc_writel(ahcd, 0, &ahcd->regs->ed_periodcurrent); - admhc_writel(ahcd, (u32) ahcd->hcca_dma, &ahcd->ahcd->regs->hcca); - - /* Sometimes PCI D3 suspend trashes frame timings ... */ - periodic_reinit(ahcd); - - /* the following code is executed with ahcd->lock held and - * irqs disabled if and only if autostopped is true - */ - -skip_resume: - /* interrupts might have been disabled */ - admhc_writel(ahcd, OHCI_INTR_INIT, &ahcd->regs->int_enable); - if (ahcd->ed_rm_list) - admhc_writel(ahcd, OHCI_INTR_SF, &ahcd->regs->int_enable); - - /* Then re-enable operations */ - admhc_writel(ahcd, OHCI_USB_OPER, &ahcd->regs->control); - (void) admhc_readl(ahcd, &ahcd->regs->control); - if (!autostopped) - msleep (3); - - temp = ahcd->hc_control; - temp &= OHCI_CTRL_RWC; - temp |= OHCI_CONTROL_INIT | OHCI_USB_OPER; - ahcd->hc_control = temp; - admhc_writel(ahcd, temp, &ahcd->regs->control); - (void) admhc_readl(ahcd, &ahcd->regs->control); - - /* TRSMRCY */ - if (!autostopped) { - msleep (10); - spin_lock_irq(&ahcd->lock); - } - /* now ahcd->lock is always held and irqs are always disabled */ - - /* keep it alive for more than ~5x suspend + resume costs */ - ahcd->next_statechange = jiffies + STATECHANGE_DELAY; - - /* maybe turn schedules back on */ - enables = 0; - temp = 0; - if (!ahcd->ed_rm_list) { - if (ahcd->ed_controltail) { - admhc_writel(ahcd, - find_head (ahcd->ed_controltail)->dma, - &ahcd->regs->ed_controlhead); - enables |= OHCI_CTRL_CLE; - temp |= OHCI_CLF; - } - if (ahcd->ed_bulktail) { - admhc_writel(ahcd, find_head (ahcd->ed_bulktail)->dma, - &ahcd->regs->ed_bulkhead); - enables |= OHCI_CTRL_BLE; - temp |= OHCI_BLF; - } - } - if (hcd->self.bandwidth_isoc_reqs || hcd->self.bandwidth_int_reqs) - enables |= OHCI_CTRL_PLE|OHCI_CTRL_IE; - if (enables) { - admhc_dbg(ahcd, "restarting schedules ... %08x\n", enables); - ahcd->hc_control |= enables; - admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control); - if (temp) - admhc_writel(ahcd, temp, &ahcd->regs->cmdstatus); - (void) admhc_readl(ahcd, &ahcd->regs->control); - } - - return 0; -} - -static int admhc_bus_suspend(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int rc; - - spin_lock_irq(&ahcd->lock); - - if (unlikely(!HCD_HW_ACCESSIBLE(hcd))) - rc = -ESHUTDOWN; - else - rc = admhc_rh_suspend(ahcd, 0); - spin_unlock_irq(&ahcd->lock); - return rc; -} - -static int admhc_bus_resume(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int rc; - - if (time_before(jiffies, ahcd->next_statechange)) - msleep(5); - - spin_lock_irq(&ahcd->lock); - - if (unlikely(!HCD_HW_ACCESSIBLE(hcd))) - rc = -ESHUTDOWN; - else - rc = admhc_rh_resume(ahcd); - spin_unlock_irq(&ahcd->lock); - - /* poll until we know a device is connected or we autostop */ - if (rc == 0) - usb_hcd_poll_rh_status(hcd); - return rc; -} - -/* Carry out polling-, autostop-, and autoresume-related state changes */ -static int admhc_root_hub_state_changes(struct admhcd *ahcd, int changed, - int any_connected) -{ - int poll_rh = 1; - - switch (ahcd->hc_control & OHCI_CTRL_HCFS) { - - case OHCI_USB_OPER: - /* keep on polling until we know a device is connected - * and RHSC is enabled */ - if (!ahcd->autostop) { - if (any_connected || - !device_may_wakeup(&admhcd_to_hcd(ahcd) - ->self.root_hub->dev)) { - if (admhc_readl(ahcd, &ahcd->regs->int_enable) & - OHCI_INTR_RHSC) - poll_rh = 0; - } else { - ahcd->autostop = 1; - ahcd->next_statechange = jiffies + HZ; - } - - /* if no devices have been attached for one second, autostop */ - } else { - if (changed || any_connected) { - ahcd->autostop = 0; - ahcd->next_statechange = jiffies + - STATECHANGE_DELAY; - } else if (time_after_eq(jiffies, - ahcd->next_statechange) - && !ahcd->ed_rm_list - && !(ahcd->hc_control & - OHCI_SCHED_ENABLES)) { - ahcd_rh_suspend(ahcd, 1); - } - } - break; - - /* if there is a port change, autostart or ask to be resumed */ - case OHCI_USB_SUSPEND: - case OHCI_USB_RESUME: - if (changed) { - if (ahcd->autostop) - admhc_rh_resume(ahcd); - else - usb_hcd_resume_root_hub(admhcd_to_hcd(ahcd)); - } else { - /* everything is idle, no need for polling */ - poll_rh = 0; - } - break; - } - return poll_rh; -} - -/*-------------------------------------------------------------------------*/ - -/* must not be called from interrupt context */ -static int admhc_restart(struct admhcd *ahcd) -{ - int temp; - int i; - struct urb_priv *priv; - - /* mark any devices gone, so they do nothing till khubd disconnects. - * recycle any "live" eds/tds (and urbs) right away. - * later, khubd disconnect processing will recycle the other state, - * (either as disconnect/reconnect, or maybe someday as a reset). - */ - spin_lock_irq(&ahcd->lock); - admhc_disable(ahcd); - usb_root_hub_lost_power(admhcd_to_hcd(ahcd)->self.root_hub); - if (!list_empty(&ahcd->pending)) - admhc_dbg(ahcd, "abort schedule...\n"); - list_for_each_entry(priv, &ahcd->pending, pending) { - struct urb *urb = priv->td[0]->urb; - struct ed *ed = priv->ed; - - switch (ed->state) { - case ED_OPER: - ed->state = ED_UNLINK; - ed->hwINFO |= cpu_to_hc32(ahcd, ED_DEQUEUE); - ed_deschedule (ahcd, ed); - - ed->ed_next = ahcd->ed_rm_list; - ed->ed_prev = NULL; - ahcd->ed_rm_list = ed; - /* FALLTHROUGH */ - case ED_UNLINK: - break; - default: - admhc_dbg(ahcd, "bogus ed %p state %d\n", - ed, ed->state); - } - - if (!urb->unlinked) - urb->unlinked = -ESHUTDOWN; - } - finish_unlinks(ahcd, 0); - spin_unlock_irq(&ahcd->lock); - - /* paranoia, in case that didn't work: */ - - /* empty the interrupt branches */ - for (i = 0; i < NUM_INTS; i++) ahcd->load[i] = 0; - for (i = 0; i < NUM_INTS; i++) ahcd->hcca->int_table[i] = 0; - - /* no EDs to remove */ - ahcd->ed_rm_list = NULL; - - /* empty control and bulk lists */ - ahcd->ed_controltail = NULL; - ahcd->ed_bulktail = NULL; - - if ((temp = admhc_run(ahcd)) < 0) { - admhc_err(ahcd, "can't restart, %d\n", temp); - return temp; - } else { - /* here we "know" root ports should always stay powered, - * and that if we try to turn them back on the root hub - * will respond to CSC processing. - */ - i = ahcd->num_ports; - while (i--) - admhc_writel(ahcd, RH_PS_PSS, - &ahcd->regs->portstatus[i]); - admhc_dbg(ahcd, "restart complete\n"); - } - return 0; -} - -#else /* CONFIG_PM */ - -static inline int admhc_rh_resume(struct admhcd *ahcd) -{ - return 0; -} - -/* Carry out polling-related state changes. - * autostop isn't used when CONFIG_PM is turned off. - */ -static int admhc_root_hub_state_changes(struct admhcd *ahcd, int changed, - int any_connected) -{ - /* If INSM is enabled, don't poll */ - if (admhc_readl(ahcd, &ahcd->regs->int_enable) & ADMHC_INTR_INSM) - return 0; - - /* If no status changes are pending, enable status-change interrupts */ - if (!changed) { - admhc_intr_enable(ahcd, ADMHC_INTR_INSM); - return 0; - } - - return 1; -} - -#endif /* CONFIG_PM */ - diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-q.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-q.c deleted file mode 100644 index cd9c8920af..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-q.c +++ /dev/null @@ -1,964 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-q.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/irq.h> -#include <linux/slab.h> - -/*-------------------------------------------------------------------------*/ - -/* - * URB goes back to driver, and isn't reissued. - * It's completely gone from HC data structures. - * PRECONDITION: ahcd lock held, irqs blocked. - */ -static void -finish_urb(struct admhcd *ahcd, struct urb *urb, int status) -__releases(ahcd->lock) -__acquires(ahcd->lock) -{ - urb_priv_free(ahcd, urb->hcpriv); - - if (likely(status == -EINPROGRESS)) - status = 0; - - switch (usb_pipetype(urb->pipe)) { - case PIPE_ISOCHRONOUS: - admhcd_to_hcd(ahcd)->self.bandwidth_isoc_reqs--; - break; - case PIPE_INTERRUPT: - admhcd_to_hcd(ahcd)->self.bandwidth_int_reqs--; - break; - } - -#ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "RET", usb_pipeout(urb->pipe), status); -#endif - - /* urb->complete() can reenter this HCD */ - usb_hcd_unlink_urb_from_ep(admhcd_to_hcd(ahcd), urb); - spin_unlock(&ahcd->lock); - usb_hcd_giveback_urb(admhcd_to_hcd(ahcd), urb, status); - spin_lock(&ahcd->lock); -} - - -/*-------------------------------------------------------------------------* - * ED handling functions - *-------------------------------------------------------------------------*/ - -#if 0 /* FIXME */ -/* search for the right schedule branch to use for a periodic ed. - * does some load balancing; returns the branch, or negative errno. - */ -static int balance(struct admhcd *ahcd, int interval, int load) -{ - int i, branch = -ENOSPC; - - /* iso periods can be huge; iso tds specify frame numbers */ - if (interval > NUM_INTS) - interval = NUM_INTS; - - /* search for the least loaded schedule branch of that period - * that has enough bandwidth left unreserved. - */ - for (i = 0; i < interval ; i++) { - if (branch < 0 || ahcd->load[branch] > ahcd->load[i]) { - int j; - - /* usb 1.1 says 90% of one frame */ - for (j = i; j < NUM_INTS; j += interval) { - if ((ahcd->load[j] + load) > 900) - break; - } - if (j < NUM_INTS) - continue; - branch = i; - } - } - return branch; -} -#endif - -/*-------------------------------------------------------------------------*/ - -#if 0 /* FIXME */ -/* both iso and interrupt requests have periods; this routine puts them - * into the schedule tree in the apppropriate place. most iso devices use - * 1msec periods, but that's not required. - */ -static void periodic_link(struct admhcd *ahcd, struct ed *ed) -{ - unsigned i; - - admhc_vdbg(ahcd, "link %sed %p branch %d [%dus.], interval %d\n", - (ed->hwINFO & cpu_to_hc32(ahcd, ED_ISO)) ? "iso " : "", - ed, ed->branch, ed->load, ed->interval); - - for (i = ed->branch; i < NUM_INTS; i += ed->interval) { - struct ed **prev = &ahcd->periodic[i]; - __hc32 *prev_p = &ahcd->hcca->int_table[i]; - struct ed *here = *prev; - - /* sorting each branch by period (slow before fast) - * lets us share the faster parts of the tree. - * (plus maybe: put interrupt eds before iso) - */ - while (here && ed != here) { - if (ed->interval > here->interval) - break; - prev = &here->ed_next; - prev_p = &here->hwNextED; - here = *prev; - } - if (ed != here) { - ed->ed_next = here; - if (here) - ed->hwNextED = *prev_p; - wmb(); - *prev = ed; - *prev_p = cpu_to_hc32(ahcd, ed->dma); - wmb(); - } - ahcd->load[i] += ed->load; - } - admhcd_to_hcd(ahcd)->self.bandwidth_allocated += ed->load / ed->interval; -} -#endif - -/* link an ed into the HC chain */ - -static int ed_schedule(struct admhcd *ahcd, struct ed *ed) -{ - struct ed *old_tail; - - if (admhcd_to_hcd(ahcd)->state == HC_STATE_QUIESCING) - return -EAGAIN; - - ed->state = ED_OPER; - - old_tail = ahcd->ed_tails[ed->type]; - - ed->ed_next = old_tail->ed_next; - if (ed->ed_next) { - ed->ed_next->ed_prev = ed; - ed->hwNextED = cpu_to_hc32(ahcd, ed->ed_next->dma); - } - ed->ed_prev = old_tail; - - old_tail->ed_next = ed; - old_tail->hwNextED = cpu_to_hc32(ahcd, ed->dma); - - ahcd->ed_tails[ed->type] = ed; - - admhc_dma_enable(ahcd); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -#if 0 /* FIXME */ -/* scan the periodic table to find and unlink this ED */ -static void periodic_unlink(struct admhcd *ahcd, struct ed *ed) -{ - int i; - - for (i = ed->branch; i < NUM_INTS; i += ed->interval) { - struct ed *temp; - struct ed **prev = &ahcd->periodic[i]; - __hc32 *prev_p = &ahcd->hcca->int_table[i]; - - while (*prev && (temp = *prev) != ed) { - prev_p = &temp->hwNextED; - prev = &temp->ed_next; - } - if (*prev) { - *prev_p = ed->hwNextED; - *prev = ed->ed_next; - } - ahcd->load[i] -= ed->load; - } - - admhcd_to_hcd(ahcd)->self.bandwidth_allocated -= ed->load / ed->interval; - admhc_vdbg(ahcd, "unlink %sed %p branch %d [%dus.], interval %d\n", - (ed->hwINFO & cpu_to_hc32(ahcd, ED_ISO)) ? "iso " : "", - ed, ed->branch, ed->load, ed->interval); -} -#endif - -/* unlink an ed from the HC chain. - * just the link to the ed is unlinked. - * the link from the ed still points to another operational ed or 0 - * so the HC can eventually finish the processing of the unlinked ed - * (assuming it already started that, which needn't be true). - * - * ED_UNLINK is a transient state: the HC may still see this ED, but soon - * it won't. ED_SKIP means the HC will finish its current transaction, - * but won't start anything new. The TD queue may still grow; device - * drivers don't know about this HCD-internal state. - * - * When the HC can't see the ED, something changes ED_UNLINK to one of: - * - * - ED_OPER: when there's any request queued, the ED gets rescheduled - * immediately. HC should be working on them. - * - * - ED_IDLE: when there's no TD queue. there's no reason for the HC - * to care about this ED; safe to disable the endpoint. - * - * When finish_unlinks() runs later, after SOF interrupt, it will often - * complete one or more URB unlinks before making that state change. - */ -static void ed_deschedule(struct admhcd *ahcd, struct ed *ed) -{ - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "ED-DESCHED", ed, 1); -#endif - - ed->hwINFO |= cpu_to_hc32(ahcd, ED_SKIP); - wmb(); - ed->state = ED_UNLINK; - - /* remove this ED from the HC list */ - ed->ed_prev->hwNextED = ed->hwNextED; - - /* and remove it from our list also */ - ed->ed_prev->ed_next = ed->ed_next; - - if (ed->ed_next) - ed->ed_next->ed_prev = ed->ed_prev; - - if (ahcd->ed_tails[ed->type] == ed) - ahcd->ed_tails[ed->type] = ed->ed_prev; -} - -/*-------------------------------------------------------------------------*/ - -static struct ed *ed_create(struct admhcd *ahcd, unsigned int type, u32 info) -{ - struct ed *ed; - struct td *td; - - ed = ed_alloc(ahcd, GFP_ATOMIC); - if (!ed) - goto err; - - /* dummy td; end of td list for this ed */ - td = td_alloc(ahcd, GFP_ATOMIC); - if (!td) - goto err_free_ed; - - switch (type) { - case PIPE_INTERRUPT: - info |= ED_INT; - break; - case PIPE_ISOCHRONOUS: - info |= ED_ISO; - break; - } - - ed->dummy = td; - ed->state = ED_IDLE; - ed->type = type; - - ed->hwINFO = cpu_to_hc32(ahcd, info); - ed->hwTailP = cpu_to_hc32(ahcd, td->td_dma); - ed->hwHeadP = ed->hwTailP; /* ED_C, ED_H zeroed */ - - return ed; - -err_free_ed: - ed_free(ahcd, ed); -err: - return NULL; -} - -/* get and maybe (re)init an endpoint. init _should_ be done only as part - * of enumeration, usb_set_configuration() or usb_set_interface(). - */ -static struct ed *ed_get(struct admhcd *ahcd, struct usb_host_endpoint *ep, - struct usb_device *udev, unsigned int pipe, int interval) -{ - struct ed *ed; - unsigned long flags; - - spin_lock_irqsave(&ahcd->lock, flags); - - ed = ep->hcpriv; - if (!ed) { - u32 info; - - /* FIXME: usbcore changes dev->devnum before SET_ADDRESS - * succeeds ... otherwise we wouldn't need "pipe". - */ - info = usb_pipedevice(pipe); - info |= (ep->desc.bEndpointAddress & ~USB_DIR_IN) << ED_EN_SHIFT; - info |= le16_to_cpu(ep->desc.wMaxPacketSize) << ED_MPS_SHIFT; - if (udev->speed == USB_SPEED_FULL) - info |= ED_SPEED_FULL; - - ed = ed_create(ahcd, usb_pipetype(pipe), info); - if (ed) - ep->hcpriv = ed; - } - - spin_unlock_irqrestore(&ahcd->lock, flags); - - return ed; -} - -/*-------------------------------------------------------------------------*/ - -/* request unlinking of an endpoint from an operational HC. - * put the ep on the rm_list - * real work is done at the next start frame (SOFI) hardware interrupt - * caller guarantees HCD is running, so hardware access is safe, - * and that ed->state is ED_OPER - */ -static void start_ed_unlink(struct admhcd *ahcd, struct ed *ed) -{ - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "ED-UNLINK", ed, 1); -#endif - - ed->hwINFO |= cpu_to_hc32(ahcd, ED_DEQUEUE); - ed_deschedule(ahcd, ed); - - /* add this ED into the remove list */ - ed->ed_rm_next = ahcd->ed_rm_list; - ahcd->ed_rm_list = ed; - - /* enable SOF interrupt */ - admhc_intr_ack(ahcd, ADMHC_INTR_SOFI); - admhc_intr_enable(ahcd, ADMHC_INTR_SOFI); - /* flush those writes */ - admhc_writel_flush(ahcd); - - /* SOF interrupt might get delayed; record the frame counter value that - * indicates when the HC isn't looking at it, so concurrent unlinks - * behave. frame_no wraps every 2^16 msec, and changes right before - * SOF is triggered. - */ - ed->tick = admhc_frame_no(ahcd) + 1; -} - -/*-------------------------------------------------------------------------* - * TD handling functions - *-------------------------------------------------------------------------*/ - -/* enqueue next TD for this URB (OHCI spec 5.2.8.2) */ - -static void -td_fill(struct admhcd *ahcd, u32 info, dma_addr_t data, int len, - struct urb *urb, int index) -{ - struct td *td, *td_pt; - struct urb_priv *urb_priv = urb->hcpriv; - int hash; - u32 cbl = 0; - -#if 1 - if (index == (urb_priv->td_cnt - 1) && - ((urb->transfer_flags & URB_NO_INTERRUPT) == 0)) - cbl |= TD_IE; -#else - if (index == (urb_priv->td_cnt - 1)) - cbl |= TD_IE; -#endif - - /* use this td as the next dummy */ - td_pt = urb_priv->td[index]; - - /* fill the old dummy TD */ - td = urb_priv->td[index] = urb_priv->ed->dummy; - urb_priv->ed->dummy = td_pt; - - td->ed = urb_priv->ed; - td->next_dl_td = NULL; - td->index = index; - td->urb = urb; - td->data_dma = data; - if (!len) - data = 0; - - if (data) - cbl |= (len & TD_BL_MASK); - - info |= TD_OWN; - - /* setup hardware specific fields */ - td->hwINFO = cpu_to_hc32(ahcd, info); - td->hwDBP = cpu_to_hc32(ahcd, data); - td->hwCBL = cpu_to_hc32(ahcd, cbl); - td->hwNextTD = cpu_to_hc32(ahcd, td_pt->td_dma); - - /* append to queue */ - list_add_tail(&td->td_list, &td->ed->td_list); - - /* hash it for later reverse mapping */ - hash = TD_HASH_FUNC(td->td_dma); - td->td_hash = ahcd->td_hash[hash]; - ahcd->td_hash[hash] = td; - - /* HC might read the TD (or cachelines) right away ... */ - wmb(); - td->ed->hwTailP = td->hwNextTD; -} - -/*-------------------------------------------------------------------------*/ - -/* Prepare all TDs of a transfer, and queue them onto the ED. - * Caller guarantees HC is active. - * Usually the ED is already on the schedule, so TDs might be - * processed as soon as they're queued. - */ -static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) -{ - struct urb_priv *urb_priv = urb->hcpriv; - dma_addr_t data; - int data_len = urb->transfer_buffer_length; - int cnt = 0; - u32 info = 0; - int is_out = usb_pipeout(urb->pipe); - u32 toggle = 0; - - /* OHCI handles the bulk/interrupt data toggles itself. We just - * use the device toggle bits for resetting, and rely on the fact - * that resetting toggle is meaningless if the endpoint is active. - */ - - if (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), is_out)) { - toggle = TD_T_CARRY; - } else { - toggle = TD_T_DATA0; - usb_settoggle(urb->dev, usb_pipeendpoint (urb->pipe), - is_out, 1); - } - - urb_priv->td_idx = 0; - list_add(&urb_priv->pending, &ahcd->pending); - - if (data_len) - data = urb->transfer_dma; - else - data = 0; - - /* NOTE: TD_CC is set so we can tell which TDs the HC processed by - * using TD_CC_GET, as well as by seeing them on the done list. - * (CC = NotAccessed ... 0x0F, or 0x0E in PSWs for ISO.) - */ - switch (urb_priv->ed->type) { - case PIPE_INTERRUPT: - info = is_out - ? TD_T_CARRY | TD_SCC_NOTACCESSED | TD_DP_OUT - : TD_T_CARRY | TD_SCC_NOTACCESSED | TD_DP_IN; - - /* setup service interval and starting frame number */ - info |= (urb->start_frame & TD_FN_MASK); - info |= (urb->interval & TD_ISI_MASK) << TD_ISI_SHIFT; - - td_fill(ahcd, info, data, data_len, urb, cnt); - cnt++; - - admhcd_to_hcd(ahcd)->self.bandwidth_int_reqs++; - break; - - case PIPE_BULK: - info = is_out - ? TD_SCC_NOTACCESSED | TD_DP_OUT - : TD_SCC_NOTACCESSED | TD_DP_IN; - - /* TDs _could_ transfer up to 8K each */ - while (data_len > TD_DATALEN_MAX) { - td_fill(ahcd, info | ((cnt) ? TD_T_CARRY : toggle), - data, TD_DATALEN_MAX, urb, cnt); - data += TD_DATALEN_MAX; - data_len -= TD_DATALEN_MAX; - cnt++; - } - - td_fill(ahcd, info | ((cnt) ? TD_T_CARRY : toggle), data, - data_len, urb, cnt); - cnt++; - - if ((urb->transfer_flags & URB_ZERO_PACKET) - && (cnt < urb_priv->td_cnt)) { - td_fill(ahcd, info | ((cnt) ? TD_T_CARRY : toggle), - 0, 0, urb, cnt); - cnt++; - } - break; - - /* control manages DATA0/DATA1 toggle per-request; SETUP resets it, - * any DATA phase works normally, and the STATUS ack is special. - */ - case PIPE_CONTROL: - /* fill a TD for the setup */ - info = TD_SCC_NOTACCESSED | TD_DP_SETUP | TD_T_DATA0; - td_fill(ahcd, info, urb->setup_dma, 8, urb, cnt++); - - if (data_len > 0) { - /* fill a TD for the data */ - info = TD_SCC_NOTACCESSED | TD_T_DATA1; - info |= is_out ? TD_DP_OUT : TD_DP_IN; - /* NOTE: mishandles transfers >8K, some >4K */ - td_fill(ahcd, info, data, data_len, urb, cnt++); - } - - /* fill a TD for the ACK */ - info = (is_out || data_len == 0) - ? TD_SCC_NOTACCESSED | TD_DP_IN | TD_T_DATA1 - : TD_SCC_NOTACCESSED | TD_DP_OUT | TD_T_DATA1; - td_fill(ahcd, info, data, 0, urb, cnt++); - - break; - - /* ISO has no retransmit, so no toggle; - * Each TD could handle multiple consecutive frames (interval 1); - * we could often reduce the number of TDs here. - */ - case PIPE_ISOCHRONOUS: - info = is_out - ? TD_T_CARRY | TD_SCC_NOTACCESSED | TD_DP_OUT - : TD_T_CARRY | TD_SCC_NOTACCESSED | TD_DP_IN; - - for (cnt = 0; cnt < urb->number_of_packets; cnt++) { - int frame = urb->start_frame; - - frame += cnt * urb->interval; - frame &= TD_FN_MASK; - td_fill(ahcd, info | frame, - data + urb->iso_frame_desc[cnt].offset, - urb->iso_frame_desc[cnt].length, urb, cnt); - } - admhcd_to_hcd(ahcd)->self.bandwidth_isoc_reqs++; - break; - } - - if (urb_priv->td_cnt != cnt) - admhc_err(ahcd, "bad number of tds created for urb %p\n", urb); -} - -/*-------------------------------------------------------------------------* - * Done List handling functions - *-------------------------------------------------------------------------*/ - -/* calculate transfer length/status and update the urb */ -static int td_done(struct admhcd *ahcd, struct urb *urb, struct td *td) -{ - struct urb_priv *urb_priv = urb->hcpriv; - u32 info; - u32 bl; - u32 tdDBP; - int type = usb_pipetype(urb->pipe); - int cc; - int status = -EINPROGRESS; - - info = hc32_to_cpup(ahcd, &td->hwINFO); - tdDBP = hc32_to_cpup(ahcd, &td->hwDBP); - bl = TD_BL_GET(hc32_to_cpup(ahcd, &td->hwCBL)); - cc = TD_CC_GET(info); - - /* ISO ... drivers see per-TD length/status */ - if (type == PIPE_ISOCHRONOUS) { - /* TODO */ - int dlen = 0; - - /* NOTE: assumes FC in tdINFO == 0, and that - * only the first of 0..MAXPSW psws is used. - */ - if (info & TD_CC) /* hc didn't touch? */ - return status; - - if (usb_pipeout(urb->pipe)) - dlen = urb->iso_frame_desc[td->index].length; - else { - /* short reads are always OK for ISO */ - if (cc == TD_CC_DATAUNDERRUN) - cc = TD_CC_NOERROR; - dlen = tdDBP - td->data_dma + bl; - } - - urb->actual_length += dlen; - urb->iso_frame_desc[td->index].actual_length = dlen; - urb->iso_frame_desc[td->index].status = cc_to_error[cc]; - - if (cc != TD_CC_NOERROR) - admhc_vdbg(ahcd, - "urb %p iso td %p (%d) len %d cc %d\n", - urb, td, 1 + td->index, dlen, cc); - - /* BULK, INT, CONTROL ... drivers see aggregate length/status, - * except that "setup" bytes aren't counted and "short" transfers - * might not be reported as errors. - */ - } else { - /* update packet status if needed (short is normally ok) */ - if (cc == TD_CC_DATAUNDERRUN - && !(urb->transfer_flags & URB_SHORT_NOT_OK)) - cc = TD_CC_NOERROR; - - if (cc != TD_CC_NOERROR && cc < TD_CC_HCD0) - status = cc_to_error[cc]; - - - /* count all non-empty packets except control SETUP packet */ - if ((type != PIPE_CONTROL || td->index != 0) && tdDBP != 0) - urb->actual_length += tdDBP - td->data_dma + bl; - - if (cc != TD_CC_NOERROR && cc < TD_CC_HCD0) - admhc_vdbg(ahcd, - "urb %p td %p (%d) cc %d, len=%d/%d\n", - urb, td, td->index, cc, - urb->actual_length, - urb->transfer_buffer_length); - } - - list_del(&td->td_list); - urb_priv->td_idx++; - - return status; -} - -/*-------------------------------------------------------------------------*/ - -static void ed_halted(struct admhcd *ahcd, struct td *td, int cc) -{ - struct urb *urb = td->urb; - struct urb_priv *urb_priv = urb->hcpriv; - struct ed *ed = td->ed; - struct list_head *tmp = td->td_list.next; - __hc32 toggle = ed->hwHeadP & cpu_to_hc32(ahcd, ED_C); - - admhc_dump_ed(ahcd, "ed halted", td->ed, 1); - /* clear ed halt; this is the td that caused it, but keep it inactive - * until its urb->complete() has a chance to clean up. - */ - ed->hwINFO |= cpu_to_hc32(ahcd, ED_SKIP); - wmb(); - ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_H); - - /* Get rid of all later tds from this urb. We don't have - * to be careful: no errors and nothing was transferred. - * Also patch the ed so it looks as if those tds completed normally. - */ - while (tmp != &ed->td_list) { - struct td *next; - - next = list_entry(tmp, struct td, td_list); - tmp = next->td_list.next; - - if (next->urb != urb) - break; - - /* NOTE: if multi-td control DATA segments get supported, - * this urb had one of them, this td wasn't the last td - * in that segment (TD_R clear), this ed halted because - * of a short read, _and_ URB_SHORT_NOT_OK is clear ... - * then we need to leave the control STATUS packet queued - * and clear ED_SKIP. - */ - list_del(&next->td_list); - urb_priv->td_cnt++; - ed->hwHeadP = next->hwNextTD | toggle; - } - - /* help for troubleshooting: report anything that - * looks odd ... that doesn't include protocol stalls - * (or maybe some other things) - */ - switch (cc) { - case TD_CC_DATAUNDERRUN: - if ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0) - break; - /* fallthrough */ - case TD_CC_STALL: - if (usb_pipecontrol(urb->pipe)) - break; - /* fallthrough */ - default: - admhc_dbg(ahcd, - "urb %p path %s ep%d%s %08x cc %d --> status %d\n", - urb, urb->dev->devpath, - usb_pipeendpoint (urb->pipe), - usb_pipein(urb->pipe) ? "in" : "out", - hc32_to_cpu(ahcd, td->hwINFO), - cc, cc_to_error[cc]); - } -} - -/*-------------------------------------------------------------------------*/ - -/* there are some urbs/eds to unlink; called in_irq(), with HCD locked */ -static void -finish_unlinks(struct admhcd *ahcd, u16 tick) -{ - struct ed *ed, **last; - -rescan_all: - for (last = &ahcd->ed_rm_list, ed = *last; ed != NULL; ed = *last) { - struct list_head *entry, *tmp; - int completed, modified; - __hc32 *prev; - - /* only take off EDs that the HC isn't using, accounting for - * frame counter wraps and EDs with partially retired TDs - */ - if (likely(HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state))) { - if (tick_before(tick, ed->tick)) { -skip_ed: - last = &ed->ed_rm_next; - continue; - } -#if 0 - if (!list_empty(&ed->td_list)) { - struct td *td; - u32 head; - - td = list_entry(ed->td_list.next, struct td, - td_list); - head = hc32_to_cpu(ahcd, ed->hwHeadP) & - TD_MASK; - - /* INTR_WDH may need to clean up first */ - if (td->td_dma != head) - goto skip_ed; - } -#endif - } - - /* reentrancy: if we drop the schedule lock, someone might - * have modified this list. normally it's just prepending - * entries (which we'd ignore), but paranoia won't hurt. - */ - *last = ed->ed_rm_next; - ed->ed_rm_next = NULL; - modified = 0; - - /* unlink urbs as requested, but rescan the list after - * we call a completion since it might have unlinked - * another (earlier) urb - * - * When we get here, the HC doesn't see this ed. But it - * must not be rescheduled until all completed URBs have - * been given back to the driver. - */ -rescan_this: - completed = 0; - prev = &ed->hwHeadP; - list_for_each_safe(entry, tmp, &ed->td_list) { - struct td *td; - struct urb *urb; - struct urb_priv *urb_priv; - __hc32 savebits; - u32 tdINFO; - int status; - - td = list_entry(entry, struct td, td_list); - urb = td->urb; - urb_priv = td->urb->hcpriv; - - if (!urb->unlinked) { - prev = &td->hwNextTD; - continue; - } - - if ((urb_priv) == NULL) - continue; - - /* patch pointer hc uses */ - savebits = *prev & ~cpu_to_hc32(ahcd, TD_MASK); - *prev = td->hwNextTD | savebits; - /* If this was unlinked, the TD may not have been - * retired ... so manually save dhe data toggle. - * The controller ignores the value we save for - * control and ISO endpoints. - */ - tdINFO = hc32_to_cpup(ahcd, &td->hwINFO); - if ((tdINFO & TD_T) == TD_T_DATA0) - ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_C); - else if ((tdINFO & TD_T) == TD_T_DATA1) - ed->hwHeadP |= cpu_to_hc32(ahcd, ED_C); - - /* HC may have partly processed this TD */ -#ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "PARTIAL", 0); -#endif - status = td_done(ahcd, urb, td); - - /* if URB is done, clean up */ - if (urb_priv->td_idx == urb_priv->td_cnt) { - modified = completed = 1; - finish_urb(ahcd, urb, status); - } - } - if (completed && !list_empty(&ed->td_list)) - goto rescan_this; - - /* ED's now officially unlinked, hc doesn't see */ - ed->state = ED_IDLE; - ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_H); - ed->hwNextED = 0; - wmb(); - ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP | ED_DEQUEUE); - - /* but if there's work queued, reschedule */ - if (!list_empty(&ed->td_list)) { - if (HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state)) - ed_schedule(ahcd, ed); - } - - if (modified) - goto rescan_all; - } -} - -/*-------------------------------------------------------------------------*/ -/* - * Process normal completions (error or success) and clean the schedules. - * - * This is the main path for handing urbs back to drivers. The only other - * normal path is finish_unlinks(), which unlinks URBs using ed_rm_list, - * instead of scanning the (re-reversed) donelist as this does. - */ - -static void ed_unhalt(struct admhcd *ahcd, struct ed *ed, struct urb *urb) -{ - struct list_head *entry, *tmp; - __hc32 toggle = ed->hwHeadP & cpu_to_hc32(ahcd, ED_C); - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "UNHALT", ed, 0); -#endif - /* clear ed halt; this is the td that caused it, but keep it inactive - * until its urb->complete() has a chance to clean up. - */ - ed->hwINFO |= cpu_to_hc32(ahcd, ED_SKIP); - wmb(); - ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_H); - - list_for_each_safe(entry, tmp, &ed->td_list) { - struct td *td = list_entry(entry, struct td, td_list); - __hc32 info; - - if (td->urb != urb) - break; - - info = td->hwINFO; - info &= ~cpu_to_hc32(ahcd, TD_CC | TD_OWN); - td->hwINFO = info; - - ed->hwHeadP = td->hwNextTD | toggle; - wmb(); - } - -} - -static void ed_intr_refill(struct admhcd *ahcd, struct ed *ed) -{ - __hc32 toggle = ed->hwHeadP & cpu_to_hc32(ahcd, ED_C); - - ed->hwHeadP = ed->hwTailP | toggle; -} - - -static inline int is_ed_halted(struct admhcd *ahcd, struct ed *ed) -{ - return ((hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) == ED_H); -} - -static inline int is_td_halted(struct admhcd *ahcd, struct ed *ed, - struct td *td) -{ - return ((hc32_to_cpup(ahcd, &ed->hwHeadP) & TD_MASK) == - (hc32_to_cpup(ahcd, &td->hwNextTD) & TD_MASK)); -} - -static void ed_update(struct admhcd *ahcd, struct ed *ed) -{ - struct list_head *entry, *tmp; - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "UPDATE", ed, 1); -#endif - - list_for_each_safe(entry, tmp, &ed->td_list) { - struct td *td = list_entry(entry, struct td, td_list); - struct urb *urb = td->urb; - struct urb_priv *urb_priv = urb->hcpriv; - int status; - - if (hc32_to_cpup(ahcd, &td->hwINFO) & TD_OWN) - break; - - /* update URB's length and status from TD */ - status = td_done(ahcd, urb, td); - if (is_ed_halted(ahcd, ed) && is_td_halted(ahcd, ed, td)) - ed_unhalt(ahcd, ed, urb); - - if (ed->type == PIPE_INTERRUPT) - ed_intr_refill(ahcd, ed); - - /* If all this urb's TDs are done, call complete() */ - if (urb_priv->td_idx == urb_priv->td_cnt) - finish_urb(ahcd, urb, status); - - /* clean schedule: unlink EDs that are no longer busy */ - if (list_empty(&ed->td_list)) { - if (ed->state == ED_OPER) - start_ed_unlink(ahcd, ed); - - /* ... reenabling halted EDs only after fault cleanup */ - } else if ((ed->hwINFO & cpu_to_hc32(ahcd, - ED_SKIP | ED_DEQUEUE)) - == cpu_to_hc32(ahcd, ED_SKIP)) { - td = list_entry(ed->td_list.next, struct td, td_list); -#if 0 - if (!(td->hwINFO & cpu_to_hc32(ahcd, TD_DONE))) { - ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP); - /* ... hc may need waking-up */ - switch (ed->type) { - case PIPE_CONTROL: - admhc_writel(ahcd, OHCI_CLF, - &ahcd->regs->cmdstatus); - break; - case PIPE_BULK: - admhc_writel(ahcd, OHCI_BLF, - &ahcd->regs->cmdstatus); - break; - } - } -#else - if ((td->hwINFO & cpu_to_hc32(ahcd, TD_OWN))) - ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP); -#endif - } - - } -} - -/* there are some tds completed; called in_irq(), with HCD locked */ -static void admhc_td_complete(struct admhcd *ahcd) -{ - struct ed *ed; - - for (ed = ahcd->ed_head; ed; ed = ed->ed_next) { - if (ed->state != ED_OPER) - continue; - - ed_update(ahcd, ed); - } -} diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120.h b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120.h deleted file mode 100644 index e47aac8e7a..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120.h +++ /dev/null @@ -1,755 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci.h - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -/* - * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to - * __leXX (normally) or __beXX (given OHCI_BIG_ENDIAN), depending on the - * host controller implementation. - */ -typedef __u32 __bitwise __hc32; -typedef __u16 __bitwise __hc16; - -/* - * OHCI Endpoint Descriptor (ED) ... holds TD queue - * See OHCI spec, section 4.2 - * - * This is a "Queue Head" for those transfers, which is why - * both EHCI and UHCI call similar structures a "QH". - */ - -#define TD_DATALEN_MAX 4096 - -#define ED_ALIGN 16 -#define ED_MASK ((u32)~(ED_ALIGN-1)) /* strip hw status in low addr bits */ - -struct ed { - /* first fields are hardware-specified */ - __hc32 hwINFO; /* endpoint config bitmap */ - /* info bits defined by hcd */ -#define ED_DEQUEUE (1 << 27) - /* info bits defined by the hardware */ -#define ED_MPS_SHIFT 16 -#define ED_MPS_MASK ((1 << 11)-1) -#define ED_MPS_GET(x) (((x) >> ED_MPS_SHIFT) & ED_MPS_MASK) -#define ED_ISO (1 << 15) /* isochronous endpoint */ -#define ED_SKIP (1 << 14) -#define ED_SPEED_FULL (1 << 13) /* fullspeed device */ -#define ED_INT (1 << 11) /* interrupt endpoint */ -#define ED_EN_SHIFT 7 /* endpoint shift */ -#define ED_EN_MASK ((1 << 4)-1) /* endpoint mask */ -#define ED_EN_GET(x) (((x) >> ED_EN_SHIFT) & ED_EN_MASK) -#define ED_FA_MASK ((1 << 7)-1) /* function address mask */ -#define ED_FA_GET(x) ((x) & ED_FA_MASK) - __hc32 hwTailP; /* tail of TD list */ - __hc32 hwHeadP; /* head of TD list (hc r/w) */ -#define ED_C (0x02) /* toggle carry */ -#define ED_H (0x01) /* halted */ - __hc32 hwNextED; /* next ED in list */ - - /* rest are purely for the driver's use */ - dma_addr_t dma; /* addr of ED */ - struct td *dummy; /* next TD to activate */ - - struct list_head urb_list; /* list of our URBs */ - - /* host's view of schedule */ - struct ed *ed_next; /* on schedule list */ - struct ed *ed_prev; /* for non-interrupt EDs */ - struct ed *ed_rm_next; /* on rm list */ - struct list_head td_list; /* "shadow list" of our TDs */ - - /* create --> IDLE --> OPER --> ... --> IDLE --> destroy - * usually: OPER --> UNLINK --> (IDLE | OPER) --> ... - */ - u8 state; /* ED_{IDLE,UNLINK,OPER} */ -#define ED_IDLE 0x00 /* NOT linked to HC */ -#define ED_UNLINK 0x01 /* being unlinked from hc */ -#define ED_OPER 0x02 /* IS linked to hc */ - - u8 type; /* PIPE_{BULK,...} */ - - /* periodic scheduling params (for intr and iso) */ - u8 branch; - u16 interval; - u16 load; - u16 last_iso; /* iso only */ - - /* HC may see EDs on rm_list until next frame (frame_no == tick) */ - u16 tick; -} __attribute__ ((aligned(ED_ALIGN))); - -/* - * OHCI Transfer Descriptor (TD) ... one per transfer segment - * See OHCI spec, sections 4.3.1 (general = control/bulk/interrupt) - * and 4.3.2 (iso) - */ - -#define TD_ALIGN 32 -#define TD_MASK ((u32)~(TD_ALIGN-1)) /* strip hw status in low addr bits */ - -struct td { - /* first fields are hardware-specified */ - __hc32 hwINFO; /* transfer info bitmask */ - - /* hwINFO bits */ -#define TD_OWN (1 << 31) /* owner of the descriptor */ -#define TD_CC_SHIFT 27 /* condition code */ -#define TD_CC_MASK 0xf -#define TD_CC (TD_CC_MASK << TD_CC_SHIFT) -#define TD_CC_GET(x) (((x) >> TD_CC_SHIFT) & TD_CC_MASK) - -#define TD_EC_SHIFT 25 /* error count */ -#define TD_EC_MASK 0x3 -#define TD_EC (TD_EC_MASK << TD_EC_SHIFT) -#define TD_EC_GET(x) ((x >> TD_EC_SHIFT) & TD_EC_MASK) -#define TD_T_SHIFT 23 /* data toggle state */ -#define TD_T_MASK 0x3 -#define TD_T (TD_T_MASK << TD_T_SHIFT) -#define TD_T_DATA0 (0x2 << TD_T_SHIFT) /* DATA0 */ -#define TD_T_DATA1 (0x3 << TD_T_SHIFT) /* DATA1 */ -#define TD_T_CARRY (0x0 << TD_T_SHIFT) /* uses ED_C */ -#define TD_T_GET(x) (((x) >> TD_T_SHIFT) & TD_T_MASK) -#define TD_DP_SHIFT 21 /* direction/pid */ -#define TD_DP_MASK 0x3 -#define TD_DP (TD_DP_MASK << TD_DP_SHIFT) -#define TD_DP_GET (((x) >> TD_DP_SHIFT) & TD_DP_MASK) -#define TD_DP_SETUP (0x0 << TD_DP_SHIFT) /* SETUP pid */ -#define TD_DP_OUT (0x1 << TD_DP_SHIFT) /* OUT pid */ -#define TD_DP_IN (0x2 << TD_DP_SHIFT) /* IN pid */ -#define TD_ISI_SHIFT 8 /* Interrupt Service Interval */ -#define TD_ISI_MASK 0x3f -#define TD_ISI_GET(x) (((x) >> TD_ISI_SHIFT) & TD_ISI_MASK) -#define TD_FN_MASK 0x3f /* frame number */ -#define TD_FN_GET(x) ((x) & TD_FN_MASK) - - __hc32 hwDBP; /* Data Buffer Pointer (or 0) */ - __hc32 hwCBL; /* Controller/Buffer Length */ - - /* hwCBL bits */ -#define TD_BL_MASK 0xffff /* buffer length */ -#define TD_BL_GET(x) ((x) & TD_BL_MASK) -#define TD_IE (1 << 16) /* interrupt enable */ - __hc32 hwNextTD; /* Next TD Pointer */ - - /* rest are purely for the driver's use */ - __u8 index; - struct ed *ed; - struct td *td_hash; /* dma-->td hashtable */ - struct td *next_dl_td; - struct urb *urb; - - dma_addr_t td_dma; /* addr of this TD */ - dma_addr_t data_dma; /* addr of data it points to */ - - struct list_head td_list; /* "shadow list", TDs on same ED */ - - u32 flags; -#define TD_FLAG_DONE (1 << 17) /* retired to done list */ -#define TD_FLAG_ISO (1 << 16) /* copy of ED_ISO */ -} __attribute__ ((aligned(TD_ALIGN))); /* c/b/i need 16; only iso needs 32 */ - -/* - * Hardware transfer status codes -- CC from td->hwINFO - */ -#define TD_CC_NOERROR 0x00 -#define TD_CC_CRC 0x01 -#define TD_CC_BITSTUFFING 0x02 -#define TD_CC_DATATOGGLEM 0x03 -#define TD_CC_STALL 0x04 -#define TD_CC_DEVNOTRESP 0x05 -#define TD_CC_PIDCHECKFAIL 0x06 -#define TD_CC_UNEXPECTEDPID 0x07 -#define TD_CC_DATAOVERRUN 0x08 -#define TD_CC_DATAUNDERRUN 0x09 - /* 0x0A, 0x0B reserved for hardware */ -#define TD_CC_BUFFEROVERRUN 0x0C -#define TD_CC_BUFFERUNDERRUN 0x0D - /* 0x0E, 0x0F reserved for HCD */ -#define TD_CC_HCD0 0x0E -#define TD_CC_NOTACCESSED 0x0F - -/* - * preshifted status codes - */ -#define TD_SCC_NOTACCESSED (TD_CC_NOTACCESSED << TD_CC_SHIFT) - - -/* map OHCI TD status codes (CC) to errno values */ -static const int cc_to_error[16] = { - /* No Error */ 0, - /* CRC Error */ -EILSEQ, - /* Bit Stuff */ -EPROTO, - /* Data Togg */ -EILSEQ, - /* Stall */ -EPIPE, - /* DevNotResp */ -ETIME, - /* PIDCheck */ -EPROTO, - /* UnExpPID */ -EPROTO, - /* DataOver */ -EOVERFLOW, - /* DataUnder */ -EREMOTEIO, - /* (for hw) */ -EIO, - /* (for hw) */ -EIO, - /* BufferOver */ -ECOMM, - /* BuffUnder */ -ENOSR, - /* (for HCD) */ -EALREADY, - /* (for HCD) */ -EALREADY -}; - -#define NUM_INTS 32 - -/* - * This is the structure of the OHCI controller's memory mapped I/O region. - * You must use readl() and writel() (in <asm/io.h>) to access these fields!! - * Layout is in section 7 (and appendix B) of the spec. - */ -struct admhcd_regs { - __hc32 gencontrol; /* General Control */ - __hc32 int_status; /* Interrupt Status */ - __hc32 int_enable; /* Interrupt Enable */ - __hc32 reserved00; - __hc32 host_control; /* Host General Control */ - __hc32 reserved01; - __hc32 fminterval; /* Frame Interval */ - __hc32 fmnumber; /* Frame Number */ - __hc32 reserved02; - __hc32 reserved03; - __hc32 reserved04; - __hc32 reserved05; - __hc32 reserved06; - __hc32 reserved07; - __hc32 reserved08; - __hc32 reserved09; - __hc32 reserved10; - __hc32 reserved11; - __hc32 reserved12; - __hc32 reserved13; - __hc32 reserved14; - __hc32 reserved15; - __hc32 reserved16; - __hc32 reserved17; - __hc32 reserved18; - __hc32 reserved19; - __hc32 reserved20; - __hc32 reserved21; - __hc32 lsthresh; /* Low Speed Threshold */ - __hc32 rhdesc; /* Root Hub Descriptor */ -#define MAX_ROOT_PORTS 2 - __hc32 portstatus[MAX_ROOT_PORTS]; /* Port Status */ - __hc32 hosthead; /* Host Descriptor Head */ -} __attribute__ ((aligned(32))); - -/* - * General Control register bits - */ -#define ADMHC_CTRL_UHFE (1 << 0) /* USB Host Function Enable */ -#define ADMHC_CTRL_SIR (1 << 1) /* Software Interrupt request */ -#define ADMHC_CTRL_DMAA (1 << 2) /* DMA Arbitration Control */ -#define ADMHC_CTRL_SR (1 << 3) /* Software Reset */ - -/* - * Host General Control register bits - */ -#define ADMHC_HC_BUSS 0x3 /* USB bus state */ -#define ADMHC_BUSS_RESET 0x0 -#define ADMHC_BUSS_RESUME 0x1 -#define ADMHC_BUSS_OPER 0x2 -#define ADMHC_BUSS_SUSPEND 0x3 -#define ADMHC_HC_DMAE (1 << 2) /* DMA enable */ - -/* - * Interrupt Status/Enable register bits - */ -#define ADMHC_INTR_SOFI (1 << 4) /* start of frame */ -#define ADMHC_INTR_RESI (1 << 5) /* resume detected */ -#define ADMHC_INTR_6 (1 << 6) /* unknown */ -#define ADMHC_INTR_7 (1 << 7) /* unknown */ -#define ADMHC_INTR_BABI (1 << 8) /* babble detected */ -#define ADMHC_INTR_INSM (1 << 9) /* root hub status change */ -#define ADMHC_INTR_SO (1 << 10) /* scheduling overrun */ -#define ADMHC_INTR_FNO (1 << 11) /* frame number overflow */ -#define ADMHC_INTR_TDC (1 << 20) /* transfer descriptor completed */ -#define ADMHC_INTR_SWI (1 << 29) /* software interrupt */ -#define ADMHC_INTR_FATI (1 << 30) /* fatal error */ -#define ADMHC_INTR_INTA (1 << 31) /* interrupt active */ - -#define ADMHC_INTR_MIE (1 << 31) /* master interrupt enable */ - -/* - * SOF Frame Interval register bits - */ -#define ADMHC_SFI_FI_MASK ((1 << 14)-1) /* Frame Interval value */ -#define ADMHC_SFI_FSLDP_SHIFT 16 -#define ADMHC_SFI_FSLDP_MASK ((1 << 15)-1) -#define ADMHC_SFI_FIT (1 << 31) /* Frame Interval Toggle */ - -/* - * SOF Frame Number register bits - */ -#define ADMHC_SFN_FN_MASK ((1 << 16)-1) /* Frame Number Mask */ -#define ADMHC_SFN_FR_SHIFT 16 /* Frame Remaining Shift */ -#define ADMHC_SFN_FR_MASK ((1 << 14)-1) /* Frame Remaining Mask */ -#define ADMHC_SFN_FRT (1 << 31) /* Frame Remaining Toggle */ - -/* - * Root Hub Descriptor register bits - */ -#define ADMHC_RH_NUMP 0xff /* number of ports */ -#define ADMHC_RH_PSM (1 << 8) /* power switching mode */ -#define ADMHC_RH_NPS (1 << 9) /* no power switching */ -#define ADMHC_RH_OCPM (1 << 10) /* over current protection mode */ -#define ADMHC_RH_NOCP (1 << 11) /* no over current protection */ -#define ADMHC_RH_PPCM (0xff << 16) /* port power control */ - -#define ADMHC_RH_LPS (1 << 24) /* local power switch */ -#define ADMHC_RH_OCI (1 << 25) /* over current indicator */ - -/* status change bits */ -#define ADMHC_RH_LPSC (1 << 26) /* local power switch change */ -#define ADMHC_RH_OCIC (1 << 27) /* over current indicator change */ - -#define ADMHC_RH_DRWE (1 << 28) /* device remote wakeup enable */ -#define ADMHC_RH_CRWE (1 << 29) /* clear remote wakeup enable */ - -#define ADMHC_RH_CGP (1 << 24) /* clear global power */ -#define ADMHC_RH_SGP (1 << 26) /* set global power */ - -/* - * Port Status register bits - */ -#define ADMHC_PS_CCS (1 << 0) /* current connect status */ -#define ADMHC_PS_PES (1 << 1) /* port enable status */ -#define ADMHC_PS_PSS (1 << 2) /* port suspend status */ -#define ADMHC_PS_POCI (1 << 3) /* port over current indicator */ -#define ADMHC_PS_PRS (1 << 4) /* port reset status */ -#define ADMHC_PS_PPS (1 << 8) /* port power status */ -#define ADMHC_PS_LSDA (1 << 9) /* low speed device attached */ - -/* status change bits */ -#define ADMHC_PS_CSC (1 << 16) /* connect status change */ -#define ADMHC_PS_PESC (1 << 17) /* port enable status change */ -#define ADMHC_PS_PSSC (1 << 18) /* port suspend status change */ -#define ADMHC_PS_OCIC (1 << 19) /* over current indicator change */ -#define ADMHC_PS_PRSC (1 << 20) /* port reset status change */ - -/* port feature bits */ -#define ADMHC_PS_CPE (1 << 0) /* clear port enable */ -#define ADMHC_PS_SPE (1 << 1) /* set port enable */ -#define ADMHC_PS_SPS (1 << 2) /* set port suspend */ -#define ADMHC_PS_CPS (1 << 3) /* clear suspend status */ -#define ADMHC_PS_SPR (1 << 4) /* set port reset */ -#define ADMHC_PS_SPP (1 << 8) /* set port power */ -#define ADMHC_PS_CPP (1 << 9) /* clear port power */ - -/* - * the POTPGT value is not defined in the ADMHC, so define a dummy value - */ -#define ADMHC_POTPGT 2 /* in ms */ - -/* hcd-private per-urb state */ -struct urb_priv { - struct ed *ed; - struct list_head pending; /* URBs on the same ED */ - - u32 td_cnt; /* # tds in this request */ - u32 td_idx; /* index of the current td */ - struct td *td[0]; /* all TDs in this request */ -}; - -#define TD_HASH_SIZE 64 /* power'o'two */ -/* sizeof (struct td) ~= 64 == 2^6 ... */ -#define TD_HASH_FUNC(td_dma) ((td_dma ^ (td_dma >> 6)) % TD_HASH_SIZE) - -/* - * This is the full ADMHCD controller description - * - * Note how the "proper" USB information is just - * a subset of what the full implementation needs. (Linus) - */ - -struct admhcd { - spinlock_t lock; - - /* - * I/O memory used to communicate with the HC (dma-consistent) - */ - struct admhcd_regs __iomem *regs; - - /* - * hcd adds to schedule for a live hc any time, but removals finish - * only at the start of the next frame. - */ - - struct ed *ed_head; - struct ed *ed_tails[4]; - - struct ed *ed_rm_list; /* to be removed */ - - struct ed *periodic[NUM_INTS]; /* shadow int_table */ - -#if 0 /* TODO: remove? */ - /* - * OTG controllers and transceivers need software interaction; - * other external transceivers should be software-transparent - */ - struct otg_transceiver *transceiver; - void (*start_hnp)(struct admhcd *ahcd); -#endif - - /* - * memory management for queue data structures - */ - struct dma_pool *td_cache; - struct dma_pool *ed_cache; - struct td *td_hash[TD_HASH_SIZE]; - struct list_head pending; - - /* - * driver state - */ - int num_ports; - int load[NUM_INTS]; - u32 host_control; /* copy of the host_control reg */ - unsigned long next_statechange; /* suspend/resume */ - u32 fminterval; /* saved register */ - unsigned autostop:1; /* rh auto stopping/stopped */ - - unsigned long flags; /* for HC bugs */ -#define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */ -#define OHCI_QUIRK_SUPERIO 0x02 /* natsemi */ -#define OHCI_QUIRK_INITRESET 0x04 /* SiS, OPTi, ... */ -#define OHCI_QUIRK_BE_DESC 0x08 /* BE descriptors */ -#define OHCI_QUIRK_BE_MMIO 0x10 /* BE registers */ -#define OHCI_QUIRK_ZFMICRO 0x20 /* Compaq ZFMicro chipset*/ - /* there are also chip quirks/bugs in init logic */ - -#ifdef DEBUG - struct dentry *debug_dir; - struct dentry *debug_async; - struct dentry *debug_periodic; - struct dentry *debug_registers; -#endif -}; - -/* convert between an hcd pointer and the corresponding ahcd_hcd */ -static inline struct admhcd *hcd_to_admhcd(struct usb_hcd *hcd) -{ - return (struct admhcd *)(hcd->hcd_priv); -} -static inline struct usb_hcd *admhcd_to_hcd(const struct admhcd *ahcd) -{ - return container_of((void *)ahcd, struct usb_hcd, hcd_priv); -} - -/*-------------------------------------------------------------------------*/ - -#ifndef DEBUG -#define STUB_DEBUG_FILES -#endif /* DEBUG */ - -#ifdef DEBUG -# define admhc_dbg(ahcd, fmt, args...) \ - printk(KERN_DEBUG "adm5120-hcd: " fmt, ## args) -#else -# define admhc_dbg(ahcd, fmt, args...) do { } while (0) -#endif - -#define admhc_err(ahcd, fmt, args...) \ - printk(KERN_ERR "adm5120-hcd: " fmt, ## args) -#define admhc_info(ahcd, fmt, args...) \ - printk(KERN_INFO "adm5120-hcd: " fmt, ## args) -#define admhc_warn(ahcd, fmt, args...) \ - printk(KERN_WARNING "adm5120-hcd: " fmt, ## args) - -#ifdef ADMHC_VERBOSE_DEBUG -# define admhc_vdbg admhc_dbg -#else -# define admhc_vdbg(ahcd, fmt, args...) do { } while (0) -#endif - -/*-------------------------------------------------------------------------*/ - -/* - * While most USB host controllers implement their registers and - * in-memory communication descriptors in little-endian format, - * a minority (notably the IBM STB04XXX and the Motorola MPC5200 - * processors) implement them in big endian format. - * - * In addition some more exotic implementations like the Toshiba - * Spider (aka SCC) cell southbridge are "mixed" endian, that is, - * they have a different endianness for registers vs. in-memory - * descriptors. - * - * This attempts to support either format at compile time without a - * runtime penalty, or both formats with the additional overhead - * of checking a flag bit. - * - * That leads to some tricky Kconfig rules howevber. There are - * different defaults based on some arch/ppc platforms, though - * the basic rules are: - * - * Controller type Kconfig options needed - * --------------- ---------------------- - * little endian CONFIG_USB_ADMHC_LITTLE_ENDIAN - * - * fully big endian CONFIG_USB_ADMHC_BIG_ENDIAN_DESC _and_ - * CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO - * - * mixed endian CONFIG_USB_ADMHC_LITTLE_ENDIAN _and_ - * CONFIG_USB_OHCI_BIG_ENDIAN_{MMIO,DESC} - * - * (If you have a mixed endian controller, you -must- also define - * CONFIG_USB_ADMHC_LITTLE_ENDIAN or things will not work when building - * both your mixed endian and a fully big endian controller support in - * the same kernel image). - */ - -#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_DESC -#ifdef CONFIG_USB_ADMHC_LITTLE_ENDIAN -#define big_endian_desc(ahcd) (ahcd->flags & OHCI_QUIRK_BE_DESC) -#else -#define big_endian_desc(ahcd) 1 /* only big endian */ -#endif -#else -#define big_endian_desc(ahcd) 0 /* only little endian */ -#endif - -#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO -#ifdef CONFIG_USB_ADMHC_LITTLE_ENDIAN -#define big_endian_mmio(ahcd) (ahcd->flags & OHCI_QUIRK_BE_MMIO) -#else -#define big_endian_mmio(ahcd) 1 /* only big endian */ -#endif -#else -#define big_endian_mmio(ahcd) 0 /* only little endian */ -#endif - -/* - * Big-endian read/write functions are arch-specific. - * Other arches can be added if/when they're needed. - * - */ -static inline unsigned int admhc_readl(const struct admhcd *ahcd, - __hc32 __iomem *regs) -{ -#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO - return big_endian_mmio(ahcd) ? - readl_be(regs) : - readl(regs); -#else - return readl(regs); -#endif -} - -static inline void admhc_writel(const struct admhcd *ahcd, - const unsigned int val, __hc32 __iomem *regs) -{ -#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO - big_endian_mmio(ahcd) ? - writel_be(val, regs) : - writel(val, regs); -#else - writel(val, regs); -#endif -} - -static inline void admhc_writel_flush(const struct admhcd *ahcd) -{ -#if 0 - /* TODO: remove? */ - (void) admhc_readl(ahcd, &ahcd->regs->gencontrol); -#endif -} - - -/*-------------------------------------------------------------------------*/ - -/* cpu to ahcd */ -static inline __hc16 cpu_to_hc16(const struct admhcd *ahcd, const u16 x) -{ - return big_endian_desc(ahcd) ? - (__force __hc16)cpu_to_be16(x) : - (__force __hc16)cpu_to_le16(x); -} - -static inline __hc16 cpu_to_hc16p(const struct admhcd *ahcd, const u16 *x) -{ - return big_endian_desc(ahcd) ? - cpu_to_be16p(x) : - cpu_to_le16p(x); -} - -static inline __hc32 cpu_to_hc32(const struct admhcd *ahcd, const u32 x) -{ - return big_endian_desc(ahcd) ? - (__force __hc32)cpu_to_be32(x) : - (__force __hc32)cpu_to_le32(x); -} - -static inline __hc32 cpu_to_hc32p(const struct admhcd *ahcd, const u32 *x) -{ - return big_endian_desc(ahcd) ? - cpu_to_be32p(x) : - cpu_to_le32p(x); -} - -/* ahcd to cpu */ -static inline u16 hc16_to_cpu(const struct admhcd *ahcd, const __hc16 x) -{ - return big_endian_desc(ahcd) ? - be16_to_cpu((__force __be16)x) : - le16_to_cpu((__force __le16)x); -} - -static inline u16 hc16_to_cpup(const struct admhcd *ahcd, const __hc16 *x) -{ - return big_endian_desc(ahcd) ? - be16_to_cpup((__force __be16 *)x) : - le16_to_cpup((__force __le16 *)x); -} - -static inline u32 hc32_to_cpu(const struct admhcd *ahcd, const __hc32 x) -{ - return big_endian_desc(ahcd) ? - be32_to_cpu((__force __be32)x) : - le32_to_cpu((__force __le32)x); -} - -static inline u32 hc32_to_cpup(const struct admhcd *ahcd, const __hc32 *x) -{ - return big_endian_desc(ahcd) ? - be32_to_cpup((__force __be32 *)x) : - le32_to_cpup((__force __le32 *)x); -} - -/*-------------------------------------------------------------------------*/ - -static inline u16 admhc_frame_no(const struct admhcd *ahcd) -{ - u32 t; - - t = admhc_readl(ahcd, &ahcd->regs->fmnumber) & ADMHC_SFN_FN_MASK; - return (u16)t; -} - -static inline u16 admhc_frame_remain(const struct admhcd *ahcd) -{ - u32 t; - - t = admhc_readl(ahcd, &ahcd->regs->fmnumber) >> ADMHC_SFN_FR_SHIFT; - t &= ADMHC_SFN_FR_MASK; - return (u16)t; -} - -/*-------------------------------------------------------------------------*/ - -static inline void admhc_disable(struct admhcd *ahcd) -{ - admhcd_to_hcd(ahcd)->state = HC_STATE_HALT; -} - -#define FI 0x2edf /* 12000 bits per frame (-1) */ -#define FSLDP(fi) (0x7fff & ((6 * ((fi) - 1200)) / 7)) -#define FIT ADMHC_SFI_FIT -#define LSTHRESH 0x628 /* lowspeed bit threshold */ - -static inline void periodic_reinit(struct admhcd *ahcd) -{ -#if 0 - u32 fi = ahcd->fminterval & ADMHC_SFI_FI_MASK; - u32 fit = admhc_readl(ahcd, &ahcd->regs->fminterval) & FIT; - - /* TODO: adjust FSLargestDataPacket value too? */ - admhc_writel(ahcd, (fit ^ FIT) | ahcd->fminterval, - &ahcd->regs->fminterval); -#else - u32 fit = admhc_readl(ahcd, &ahcd->regs->fminterval) & FIT; - - /* TODO: adjust FSLargestDataPacket value too? */ - admhc_writel(ahcd, (fit ^ FIT) | ahcd->fminterval, - &ahcd->regs->fminterval); -#endif -} - -static inline u32 admhc_read_rhdesc(struct admhcd *ahcd) -{ - return admhc_readl(ahcd, &ahcd->regs->rhdesc); -} - -static inline u32 admhc_read_portstatus(struct admhcd *ahcd, int port) -{ - return admhc_readl(ahcd, &ahcd->regs->portstatus[port]); -} - -static inline void admhc_write_portstatus(struct admhcd *ahcd, int port, - u32 value) -{ - admhc_writel(ahcd, value, &ahcd->regs->portstatus[port]); -} - -static inline void roothub_write_status(struct admhcd *ahcd, u32 value) -{ - /* FIXME: read-only bits must be masked out */ - admhc_writel(ahcd, value, &ahcd->regs->rhdesc); -} - -static inline void admhc_intr_disable(struct admhcd *ahcd, u32 ints) -{ - u32 t; - - t = admhc_readl(ahcd, &ahcd->regs->int_enable); - t &= ~(ints); - admhc_writel(ahcd, t, &ahcd->regs->int_enable); - /* TODO: flush writes ?*/ -} - -static inline void admhc_intr_enable(struct admhcd *ahcd, u32 ints) -{ - u32 t; - - t = admhc_readl(ahcd, &ahcd->regs->int_enable); - t |= ints; - admhc_writel(ahcd, t, &ahcd->regs->int_enable); - /* TODO: flush writes ?*/ -} - -static inline void admhc_intr_ack(struct admhcd *ahcd, u32 ints) -{ - admhc_writel(ahcd, ints, &ahcd->regs->int_status); -} - -static inline void admhc_dma_enable(struct admhcd *ahcd) -{ - u32 t; - - t = admhc_readl(ahcd, &ahcd->regs->host_control); - if (t & ADMHC_HC_DMAE) - return; - - t |= ADMHC_HC_DMAE; - admhc_writel(ahcd, t, &ahcd->regs->host_control); - admhc_vdbg(ahcd, "DMA enabled\n"); -} - -static inline void admhc_dma_disable(struct admhcd *ahcd) -{ - u32 t; - - t = admhc_readl(ahcd, &ahcd->regs->host_control); - if (!(t & ADMHC_HC_DMAE)) - return; - - t &= ~ADMHC_HC_DMAE; - admhc_writel(ahcd, t, &ahcd->regs->host_control); - admhc_vdbg(ahcd, "DMA disabled\n"); -} |