diff options
Diffstat (limited to 'target/linux/amazon/files/drivers/atm')
| -rw-r--r-- | target/linux/amazon/files/drivers/atm/amazon_tpe.c | 3074 |
1 files changed, 0 insertions, 3074 deletions
diff --git a/target/linux/amazon/files/drivers/atm/amazon_tpe.c b/target/linux/amazon/files/drivers/atm/amazon_tpe.c deleted file mode 100644 index b507494407..0000000000 --- a/target/linux/amazon/files/drivers/atm/amazon_tpe.c +++ /dev/null @@ -1,3074 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - */ -//----------------------------------------------------------------------- -/* - * Description: - * Driver for Infineon Amazon TPE - */ -//----------------------------------------------------------------------- -/* Author: peng.liu@infineon.com - * Created: 12-April-2004 - */ -//----------------------------------------------------------------------- -/* History - * Last changed on: 13 Oct. 2004 - * Last changed by: peng.liu@infineon.com - * Last changed on: 28 Jan. 2004 - * Last changed by: peng.liu@infineon.com - * Last changed Reason: - * - AAL5R may send more bytes than expected in MFL (so far, confirmed as 64 bytes) - */ -// 507261:tc.chen 2005/07/26 re-organize code address map to improve performance. -// 507281:tc.chen 2005/07/28 fix f4 segment isssue -/* 511045:linmars 2005/11/04 from Liu.Peng: change NRT_VBR bandwidth calculation based on scr instead of pcr */ - -#ifndef __KERNEL__ -#define __KERNEL__ -#endif -#ifndef EXPORT_SYMTAB -#define EXPORT_SYMTAB -#endif - -/*TPE level loopback, bypass AWARE DFE */ -#undef TPE_LOOPBACK - -/* enable debug options */ -#undef AMAZON_ATM_DEBUG - -/* enable rx error packet analysis */ -#undef AMAZON_ATM_DEBUG_RX - -/* test AAL5 Interrupt */ -#undef AMAZON_TPE_TEST_AAL5_INT - -/* dump packet */ -#undef AMAZON_TPE_DUMP - -/* read ARC register*/ -/* this register is located in side DFE module*/ -#undef AMAZON_TPE_READ_ARC - -/* software controlled reassembly */ -#undef AMAZON_TPE_SCR - -/* recovery from AAL5 bug */ -#undef AMAZON_TPE_AAL5_RECOVERY - -#if defined(AMAZON_TPE_READ_ARC) || defined(AMAZON_TPE_AAL5_RECOVERY) -#define ALPHAEUS_BASE_ADDR 0x31c00 -#define A_CFG_ADDR (ALPHAEUS_BASE_ADDR+0x04) -#define AR_CB0_STATUS_ADDR (ALPHAEUS_BASE_ADDR+0x2c) -#define AR_CB1_STATUS_ADDR (ALPHAEUS_BASE_ADDR+0x30) -#define AT_CELL0_ADDR (ALPHAEUS_BASE_ADDR+0x90) -#define AR_CELL0_ADDR (ALPHAEUS_BASE_ADDR+0x1a0) -#define AR_CD_CNT0_ADDR (ALPHAEUS_BASE_ADDR+0x1c8) -#endif - -#include <linux/module.h> -#include <linux/config.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/time.h> -#include <linux/atm.h> -#include <linux/atmdev.h> -#include <linux/netdevice.h> -#include <asm/byteorder.h> -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/atomic.h> -#include <asm/bitops.h> -#include <asm/system.h> - -#include <asm/amazon/amazon.h> -#include <asm/amazon/irq.h> - -#include <linux/in.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/ip.h> -#include <linux/tcp.h> -#include <linux/skbuff.h> -#include <linux/in6.h> -#include <linux/delay.h> -#include <asm/amazon/atm_defines.h> -#include <asm/amazon/amazon_dma.h> -#include <asm/amazon/amazon_tpe.h> - -#if defined(AMAZON_TPE_READ_ARC) || defined(AMAZON_TPE_AAL5_RECOVERY) -#include <asm/amazon/amazon_mei.h> -#include <asm/amazon/amazon_mei_app.h> -#endif - -#define AMAZON_TPE_EMSG(fmt, args...) printk( KERN_ERR "%s: " fmt,__FUNCTION__, ## args) - -/***************************************** External Functions *******************************************/ -extern unsigned int amazon_get_fpi_hz(void); -extern void mask_and_ack_amazon_irq(unsigned int irq_nr); -extern void amz_push_oam(unsigned char *); - -//amazon_mei.c -#if defined(AMAZON_TPE_READ_ARC) || defined(AMAZON_TPE_AAL5_RECOVERY) -extern MEI_ERROR meiDebugRead(u32 srcaddr, u32 *databuff, u32 databuffsize); -extern MEI_ERROR meiDebugWrite(u32 destaddr, u32 *databuff, u32 databuffsize); -#endif - -/***************************************** Internal Functions *******************************************/ -int amazon_atm_read_procmem(char *buf, char **start, off_t offset,int count, int *eof, void *data); -/***************************************** Global Data *******************************************/ -amazon_atm_dev_t g_atm_dev; //device data -static struct tq_struct swex_start_task; //BH task -static struct tq_struct swex_complete_task; //BH task -#ifdef AMAZON_TPE_SCR -static struct tq_struct a5r_task; //BH task -#endif -static struct dma_device_info g_dma_dev; //for DMA -static struct atm_dev * amazon_atm_devs[AMAZON_ATM_PORT_NUM]; -static struct oam_last_activity g_oam_time_stamp[AMAZON_ATM_MAX_VCC_NUM]; -static u8 g_oam_cell[AMAZON_AAL0_SDU+4]; //for OAM cells -#ifdef AMAZON_CHECK_LINK -static int adsl_link_status; //ADSL link status, 0:down, 1:up -#endif //AMAZON_CHECK_LINK -/***************************************** Module Parameters *************************************/ -// Parameter Definition for module -static int port_enable0 = 1; // Variable for parameter port_enable0 -static int port_enable1 = 0; // Variable for parameter port_enable1 -static int port_max_conn0 = 15; // Variable for parameter port_max_conn0 -static int port_max_conn1 = 0; // Variable for parameter port_max_conn1 -static int port_cell_rate_up0 = 7500; // Variable for parameter port_cell_rate_up0 -static int port_cell_rate_up1 = 7500; // Variable for parameter port_cell_rate_up1 - - -static int qsb_tau = 1; // Variable for parameter qsb_tau -static int qsb_srvm = 0xf; // Variable for parameter qsb_srvm -static int qsb_tstep = 4 ; // Variable for parameter qsb_tstep - -static int cbm_nrt = 3900; // Variable for parameter cbm_nrt -static int cbm_clp0 =3500; // Variable for parameter cbm_clp0 -static int cbm_clp1 =3200; // Variable for parameter cbm_clp1 -static int cbm_free_cell_no = AMAZON_ATM_FREE_CELLS; // Variable for parameter cbm_free_cell_no - -static int a5_fill_pattern = 0x7e; // Variable for parameter a5_fill_pattern '~' -static int a5s_mtu = 0x700; // mtu for tx -static int a5r_mtu = 0x700; // mtu for rx - -static int oam_q_threshold = 64; // oam queue threshold, minium value 64 -static int rx_q_threshold = 1000; // rx queue threshold, minium value 64 -static int tx_q_threshold = 800; // tx queue threshold, minium value 64 - -MODULE_PARM(port_max_conn0, "i"); -MODULE_PARM_DESC(port_max_conn0, "Maximum atm connection for port #0"); -MODULE_PARM(port_max_conn1, "i"); -MODULE_PARM_DESC(port_max_conn1, "Maximum atm connection for port #1"); -MODULE_PARM(port_enable0, "i"); -MODULE_PARM_DESC(port_enable0, "0 -> port disabled, 1->port enabled"); -MODULE_PARM(port_enable1, "i"); -MODULE_PARM_DESC(port_enable1, "0 -> port disabled, 1->port enabled"); -MODULE_PARM(port_cell_rate_up0, "i"); -MODULE_PARM_DESC(port_cell_rate_up0, "ATM port upstream rate in cells/s"); -MODULE_PARM(port_cell_rate_up1, "i"); -MODULE_PARM_DESC(port_cell_rate_up1, "ATM port upstream rate in cells/s"); - -MODULE_PARM(qsb_tau,"i"); -MODULE_PARM_DESC(qsb_tau, "Cell delay variation. value must be > 0"); -MODULE_PARM(qsb_srvm, "i"); -MODULE_PARM_DESC(qsb_srvm, "Maximum burst size"); -MODULE_PARM(qsb_tstep, "i"); -MODULE_PARM_DESC(qsb_tstep, "n*32 cycles per sbs cycles n=1,2,4"); - -MODULE_PARM(cbm_nrt, "i"); -MODULE_PARM_DESC(cbm_nrt, "Non real time threshold for cell buffer"); -MODULE_PARM(cbm_clp0, "i"); -MODULE_PARM_DESC(cbm_clp0, "Threshold for cells with cell loss priority 0"); -MODULE_PARM(cbm_clp1, "i"); -MODULE_PARM_DESC(cbm_clp1, "Threshold for cells with cell loss priority 1"); -MODULE_PARM(cbm_free_cell_no, "i"); -MODULE_PARM_DESC(cbm_free_cell_no, "Number of cells in the cell buffer manager"); - -MODULE_PARM(a5_fill_pattern, "i"); -MODULE_PARM_DESC(a5_fill_pattern, "filling pattern (PAD) for aal5 frames"); -MODULE_PARM(a5s_mtu, "i"); -MODULE_PARM_DESC(a5s_mtu, "max. SDU for upstream"); -MODULE_PARM(a5r_mtu, "i"); -MODULE_PARM_DESC(a5r_mtu, "max. SDU for downstream"); - -MODULE_PARM(oam_q_threshold, "i"); -MODULE_PARM_DESC(oam_q_threshold, "oam queue threshold"); - -MODULE_PARM(rx_q_threshold, "i"); -MODULE_PARM_DESC(rx_q_threshold, "downstream/rx queue threshold"); - -MODULE_PARM(tx_q_threshold, "i"); -MODULE_PARM_DESC(tx_q_threshold, "upstream/tx queue threshold"); - -/***************************************** local functions *************************************/ -/* Brief: valid QID - * Return: 1 if valid - * 0 if not - */ -static inline int valid_qid(int qid) -{ - return ( (qid>0) && (qid<AMAZON_ATM_MAX_QUEUE_NUM)); -} - -/* - * Brief: align to 16 bytes boundary - * Parameter: - * skb - * Description: - * use skb_reserve to adjust the data pointer - * don't change head pointer - * pls allocate extrac 16 bytes before call this function - */ -static void inline alloc_align_16(struct sk_buff * skb) -{ - if ( ( ((u32) (skb->data)) & 15) != 0){ - AMAZON_TPE_DMSG("need to adjust the alignment manually\n"); - skb_reserve(skb, 16 - (((u32) (skb->data)) & 15) ); - } - -} - -/* - * Brief: initialize the device according to the module paramters - * Return: not NULL - ok - * NULL - fails - * Description: arrange load parameters and call the hardware initialization routines - */ -static void atm_init_parameters(amazon_atm_dev_t *dev) -{ - //port setting - dev->ports[0].enable = port_enable0; - dev->ports[0].max_conn = port_max_conn0; - dev->ports[0].tx_max_cr = port_cell_rate_up0; - if (port_enable1){ - dev->ports[1].enable = port_enable1; - dev->ports[1].max_conn = port_max_conn1; - dev->ports[1].tx_max_cr = port_cell_rate_up1; - } - - //aal5 - dev->aal5.padding_byte = a5_fill_pattern; - dev->aal5.tx_max_sdu = a5s_mtu; - dev->aal5.rx_max_sdu = a5r_mtu; - - //cbm - dev->cbm.nrt_thr = cbm_nrt; - dev->cbm.clp0_thr = cbm_clp0; - dev->cbm.clp1_thr = cbm_clp1; - dev->cbm.free_cell_cnt = cbm_free_cell_no; - - //qsb - dev->qsb.tau = qsb_tau; - dev->qsb.tstepc =qsb_tstep; - dev->qsb.sbl = qsb_srvm; - - //allocate on the fly - dev->cbm.mem_addr = NULL; - dev->cbm.qd_addr = NULL; -} - - -/* Brief: Find QID for VCC - * Parameters: vcc - VCC data structure - * Return Value: -EINVAL - VCC not found - * qid - QID for this VCC - * Description: - * This function returns the QID of a given VCC - */ -static int amazon_atm_get_queue(struct atm_vcc* vcc) -{ - int i; - for (i=0;i<AMAZON_ATM_MAX_QUEUE_NUM;i++) { - if (g_atm_dev.queues[i].vcc == vcc) return i; - } - return -EINVAL; -} - - -/* - * Brief: Find QID for VPI/VCI - * Parameters: vpi - VPI to found - * vci - VCI to found - * - * Return Value: -EINVAL - VPI/VCI not found - * qid - QID for this VPI/VCI - * - * Description: - * This function returns the QID for a given VPI/VCI. itf doesn't matter - */ -static int amazon_atm_find_vpivci(u8 vpi, u16 vci) -{ - int i; - struct atm_vcc * vcc; - for (i=0;i<AMAZON_ATM_MAX_QUEUE_NUM;i++) { - if ( (vcc = g_atm_dev.queues[i].vcc)!= NULL) { - if ((vcc->vpi == vpi) && (vcc->vci == vci)) return i; - } - } - return -EINVAL; -} - -/* Brief: Find QID for VPI - * Parameters: vpi - VPI to found - * Return Value: -EINVAL - VPI not found - * qid - QID for this VPI - * - * Description: - * This function returns the QID for a given VPI. itf and VCI don't matter - */ -static int amazon_atm_find_vpi(u8 vpi) -{ - int i; - for (i=0;i<AMAZON_ATM_MAX_QUEUE_NUM;i++) { - if ( g_atm_dev.queues[i].vcc!= NULL) { - if (g_atm_dev.queues[i].vcc->vpi == vpi) return i; - } - } - return -EINVAL; -} - -/* - * Brief: Clears QID entries for VCC - * - * Parameters: vcc - VCC to found - * - * Description: - * This function searches for the given VCC and sets it to NULL if found. - */ -static inline void amazon_atm_clear_vcc(int i) -{ - g_atm_dev.queues[i].vcc = NULL; - g_atm_dev.queues[i].free = 1; -} - - -/* - * Brief: dump skb data - */ -static inline void dump_skb(u32 len, char * data) -{ -#ifdef AMAZON_TPE_DUMP - int i; - for(i=0;i<len;i++){ - printk("%2.2x ",(u8)(data[i])); - if (i % 16 == 15) - printk("\n"); - } - printk("\n"); -#endif -} - -/* - * Brief: dump queue descriptor - */ -static inline void dump_qd(int qid) -{ -#ifdef AMAZON_TPE_DUMP - u8 * qd_addr; - if (valid_qid(qid) != 1) return; - qd_addr = (u8 *) KSEG1ADDR((unsigned long)g_atm_dev.cbm.qd_addr); - AMAZON_TPE_EMSG("qid: %u [%8x][%8x][%8x][%8x]\n", qid - ,readl(qd_addr+qid*CBM_QD_SIZE+0x0) - ,readl(qd_addr+qid*CBM_QD_SIZE+0x4) - ,readl(qd_addr+qid*CBM_QD_SIZE+0x8) - ,readl(qd_addr+qid*CBM_QD_SIZE+0xc)); -#endif -} - -/* - * Brief: release TX skbuff - */ -static inline void amazon_atm_free_tx_skb_vcc(struct atm_vcc *vcc, struct sk_buff *skb) -{ - if ( vcc->pop != NULL) { - vcc->pop(vcc, skb); - } else { - dev_kfree_skb_any(skb); - } -} -/* - * Brief: release TX skbuff - */ -static inline void amazon_atm_free_tx_skb(struct sk_buff *skb) -{ - struct atm_vcc* vcc = ATM_SKB(skb)->vcc; - if (vcc!=NULL){ - amazon_atm_free_tx_skb_vcc(vcc,skb); - } else { - dev_kfree_skb_any(skb);//fchang:Added - } -} - -/* Brief: divide by 64 and round up - */ -static inline u32 divide_by_64_round_up(int input) -{ - u32 tmp1; - tmp1 = (u32) input; - tmp1 = (tmp1%64)?(tmp1/64 + 1): (tmp1/64); - if (tmp1 == 0) tmp1 = 1; - return tmp1; -} - -/* - * Brief: statistics - */ -#ifdef AMAZON_ATM_DEBUG -static inline void queue_statics(int qid, qs_t idx) -{ - if (valid_qid(qid)){ - g_atm_dev.queues[qid].qs[idx]++; - } -} -#else //not AMAZON_ATM_DEBUG -static inline void queue_statics(int qid, qs_t idx){} -#endif //AMAZON_ATM_DEBUG - - -/* Brief: set dma tx full, i.e. there is no available descriptors - */ -static void inline atm_dma_full(void) -{ - AMAZON_TPE_DMSG("ch0 is full\n"); - atomic_set(&g_atm_dev.dma_tx_free_0,0); -} - -/* - * Brief set dma tx free (at least one descript is available) - */ -inline static void atm_dma_free(void) -{ - AMAZON_TPE_DMSG("ch0 is free\n"); - atomic_set(&g_atm_dev.dma_tx_free_0,1); -} - - -/* Brief: return the status of DMA TX descriptors - * Parameters: TX channel (DMA_TX_CH0, TX_CH1) - * Return: - * 1: there are availabel TX descriptors - * 0: no available - * Description: - * - */ -inline int dma_may_send(int ch) -{ - if (atomic_read(&g_atm_dev.dma_tx_free_0)){ - return 1; - } - return 0; -} - -/******************************* global functions *********************************/ -/* - * Brief: SWIE Cell Extraction Start Routine - * and task routine for swex_complete_task - * Parameters: irq_stat - interrupt status - * - * Description: - * This is the routine for extracting cell. It will schedule itself if the hardware is busy. - * This routine runs in interrupt context - */ -void amazon_atm_swex(void * irq_stat) -{ - u32 ex_stat=0; - u32 addr; - // Read extraction status register - ex_stat = readl(CBM_HWEXSTAT0_ADDR); - - // Check if extraction/insertion is in progress - if ( (ex_stat & CBM_EXSTAT_SCB) || (ex_stat & CBM_EXSTAT_FB) || (test_and_set_bit(SWIE_LOCK, &(g_atm_dev.swie.lock))!=0)) { - AMAZON_TPE_DMSG(" extraction in progress. Will wait\n"); - swex_start_task.data = irq_stat; - queue_task(&swex_start_task, &tq_immediate); - mark_bh(IMMEDIATE_BH); - }else { - // Extract QID - g_atm_dev.swie.qid = (((u32)irq_stat) >> 24); - AMAZON_TPE_DMSG("extracting from qid=%u\n",g_atm_dev.swie.qid); - //read status word - addr = KSEG1ADDR((unsigned long)g_atm_dev.cbm.qd_addr); - addr = readl((addr + g_atm_dev.swie.qid * 0x10 + 4) & 0xFFFFFFC0); - addr = KSEG1ADDR(addr); - g_atm_dev.swie.sw = readl(addr+52)&SWIE_ADDITION_DATA_MASK; - AMAZON_TPE_DMSG("cell addition word: %8x \n", g_atm_dev.swie.sw); - - // Start extraction - AMAZON_WRITE_REGISTER_L(g_atm_dev.swie.qid | SWIE_CBM_PID_SUBADDR, CBM_HWEXPAR0_ADDR); - AMAZON_WRITE_REGISTER_L(SWIE_CBM_SCE0, CBM_HWEXCMD_ADDR); - } -} -#ifdef AMAZON_TPE_SCR -u32 g_a5r_wait=0; -/* - * Brief: AAL5 Packet Extraction Routine and task routine for a5r_task - * Parameters: irq_stat - interrupt status - * - * Description: - * This is the routine for extracting frame. It will schedule itself if the hardware is busy. - * This routine runs in interrupt context - */ -void amazon_atm_a5r(void* qid) -{ - volatile u32 ex_stat=0; - u32 addr; - u32 a5r_wait=0; - - ex_stat = readl(CBM_HWEXSTAT0_ADDR); -#if 0 - // Check if extraction/insertion is in progress - if ( (ex_stat & CBM_EXSTAT_SCB) || (ex_stat & CBM_EXSTAT_FB) ) { - AMAZON_TPE_DMSG(" extraction in progress. Will wait\n"); - a5r_task.data = qid; - queue_task(&a5r_task, &tq_immediate); - mark_bh(IMMEDIATE_BH); - }else { - AMAZON_TPE_DMSG("extracting from qid=%u\n",(u8)qid); - // Start extraction - AMAZON_WRITE_REGISTER_L(((u8)qid) | CBM_HWEXPAR_PN_A5, CBM_HWEXPAR0_ADDR); - AMAZON_WRITE_REGISTER_L(CBM_HWEXCMD_FE0, CBM_HWEXCMD_ADDR); - } -#else - //while ( (ex_stat & CBM_EXSTAT_SCB) || (ex_stat & CBM_EXSTAT_FB) ) { - while ( ex_stat != 0x80){ - a5r_wait++; - ex_stat = readl(CBM_HWEXSTAT0_ADDR); -#if 0 - if (a5r_wait >= 0xffffff){ - a5r_wait=0; - printk("."); - } -#endif - } - if (a5r_wait > g_a5r_wait){ - g_a5r_wait = a5r_wait; - } - AMAZON_WRITE_REGISTER_L(((u8)qid) | CBM_HWEXPAR_PN_A5, CBM_HWEXPAR0_ADDR); - AMAZON_WRITE_REGISTER_L(CBM_HWEXCMD_FE0, CBM_HWEXCMD_ADDR); -#endif -} - -#endif //AMAZON_TPE_SCR - -/* Brief: Handle F4/F5 OAM cell - * Return: - * 0 ok - * <0 fails - */ -static int inline amazon_handle_oam_cell(void *data, u8 vpi, u16 vci,u32 status) -{ - struct atm_vcc* vcc=NULL; - int qid; - if (!status&SWIE_EOAM_MASK){ - AMAZON_TPE_EMSG("unknown cell received, discarded\n"); - goto amazon_handle_oam_cell_err_exit; - }else if (status&SWIE_ECRC10ERROR_MASK){ - AMAZON_TPE_EMSG("CRC-10 Error Status:%8x, discarded\n", status); - goto amazon_handle_oam_cell_err_exit; - }else{ - if(status & (SWIE_EVCI3_MASK |SWIE_EVCI4_MASK)){ - //F4 level (VPI) OAM, Assume duplex - qid = amazon_atm_find_vpi(vpi)+CBM_RX_OFFSET; - }else if (status & (SWIE_EPTI4_MASK|SWIE_EPTI5_MASK)){ - //F5 level (VCI) OAM, Assume duplex - qid = amazon_atm_find_vpivci(vpi,vci)+CBM_RX_OFFSET; - }else{ - qid = -1; - AMAZON_TPE_EMSG("non-F4/F5 OAM cells?, discarded\n"); - goto amazon_handle_oam_cell_err_exit; - } - } - if (valid_qid(qid) && ((vcc = g_atm_dev.queues[qid].vcc)!=NULL)){ - //TODO, should we do this for ALL OAM types? (Actually only User and CC) - g_atm_dev.queues[qid].access_time=xtime; - if (vcc->push_oam){ - (*vcc->push_oam)(vcc,data); - }else{ - amz_push_oam(data); - } - }else{ - AMAZON_TPE_EMSG("no VCC yet\n"); - goto amazon_handle_oam_cell_err_exit; - } - return 0; -amazon_handle_oam_cell_err_exit: - dump_skb(AMAZON_AAL0_SDU,(char *)data); - return -1; -} - -/* Brief: SWIE Cell Extraction Finish Routine - * and task routine for swex_complete_task - * Description: - * 1.Allocate a buffer of type struct sk_buff - * 2.Copy the data from the temporary memory to this buffer - * 3.Push the data to upper layer - * 4.Update the statistical data if necessary - * 5.Release the temporary data - - */ -void amazon_atm_swex_push(void * data) -{ - struct atm_vcc* vcc=NULL; - struct sk_buff* skb=NULL; - struct amazon_atm_cell_header * cell_header; - u32 status; - int qid; - if (!data){ - AMAZON_TPE_EMSG("data is NULL\n"); - return; - } - qid = ((u8*)data)[AMAZON_AAL0_SDU]; - status = ((u32*)data)[ATM_AAL0_SDU/4]; - cell_header = (struct amazon_atm_cell_header *) data; - if (valid_qid(qid) != 1){ - AMAZON_TPE_EMSG("error qid: %u\n",qid); - AMAZON_TPE_EMSG("unknown cells recieved\n"); - }else if (qid == AMAZON_ATM_OAM_Q_ID){ - //OAM or RM or OTHER cell - //Find real connection - -#ifdef IKOS_MINI_BOOT - //for OAM loop back test - dump_skb(56,(char *)data); - //kfree(data); using g_oam_cell - return; -#endif //IKOS_MINI_BOOT -#ifdef TPE_LOOPBACK - amz_push_oam(data); - return; -#endif//TPE_LOOPBACK - int ret = 0; - ret = amazon_handle_oam_cell(data,cell_header->bit.vpi,cell_header->bit.vci,status); - if (ret == 0) - return; - }else{ - //should be normal AAL0 cells - // Get VCC - vcc = g_atm_dev.queues[qid].vcc; - if (vcc != NULL) { - AMAZON_TPE_DMSG("push to upper layer\n"); - skb = dev_alloc_skb(AMAZON_AAL0_SDU); - if (skb != NULL) { - //skb->dev=vcc->dev; - memcpy(skb_put(skb, AMAZON_AAL0_SDU), data, AMAZON_AAL0_SDU); - skb->stamp = xtime; - ATM_SKB(skb)->vcc = vcc; - (*g_atm_dev.queues[qid].push)(vcc,skb,0); - }else{ - AMAZON_TPE_EMSG(" No memory left for incoming AAL0 cell! Cell discarded!\n"); - //inform the upper layer - (*g_atm_dev.queues[qid].push)(vcc,skb,-ENOMEM); - atomic_inc(&vcc->stats->rx_drop); - } - }else{ - AMAZON_TPE_EMSG("invalid qid %u\n",qid); - } - } - //kfree(data); using g_oam_cell -} - -/* - * Brief: Interrupt handler for software cell extraction (done) - * Parameters: irq - CPPN for this interrupt - * data - Device ID for this interrupt - * regs - Register file - * - * Description: - * When a software extraction is finished this interrupt is issued. - * It reads the cell data and sends it to the ATM stack. - */ -void amazon_atm_swex_isr(int irq, void *data, struct pt_regs *regs) -{ - u32 * cell = NULL; - int i; - //ATM_AAL0 SDU + QID - AMAZON_TPE_DMSG("SWIE extraction done\n"); - cell = (u32 *) g_oam_cell; - if (cell != NULL){ - //convert to host byte order from big endian - for(i=0;i<ATM_AAL0_SDU;i+=4){ - cell[i/4]=readl(SWIE_ECELL_ADDR+i); - } - cell[ATM_AAL0_SDU/4]= g_atm_dev.swie.sw; - ((u8*)cell)[AMAZON_AAL0_SDU] = g_atm_dev.swie.qid; -#ifdef IKOS_MINI_BOOT - for(i=0;i<ATM_AAL0_SDU;i+=4){ - AMAZON_TPE_DMSG("[%2x][%2x][%2x][%2x]\n", - ((char*)cell)[i], - ((char*)cell)[i+1], - ((char*)cell)[i+2], - ((char*)cell)[i+3] - ); - } - AMAZON_TPE_DMSG("qid: %u\n", ((u8*)cell)[AMAZON_AAL0_SDU]); - amazon_atm_swex_push((void *) cell); -#else //not IKOS_MINI_BOOT - swex_complete_task.data = cell; - queue_task(&swex_complete_task,&tq_immediate); - mark_bh(IMMEDIATE_BH); -#endif //not IKOS_MINI_BOOT - }else{ - AMAZON_TPE_EMSG("no memory for receiving AAL0 cell\n"); - } - - /* release the lock and check */ - if (test_and_clear_bit(SWIE_LOCK,&(g_atm_dev.swie.lock)) == 0){ - AMAZON_TPE_EMSG("swie lock is already released\n"); - } - wake_up(&g_atm_dev.swie.sleep); -} -/* Brief: Interrupt handler for software cell insertion - * - * Parameters: irq - CPPN for this interrupt - * data - Device ID for this interrupt - * regs - Register file - * - * Description: - * When a software insertion is finished this interrupt is issued. - * The only purpose is to release the semaphore and read the status register. - */ -void amazon_atm_swin_isr(int irq, void *data, struct pt_regs *regs) -{ - AMAZON_TPE_DMSG("SWIE insertion done\n"); - /* release the lock and check */ - if (test_and_clear_bit(SWIE_LOCK,&(g_atm_dev.swie.lock)) == 0){ - AMAZON_TPE_EMSG("swie lock is already released"); - } - // Release semaphore - up(&g_atm_dev.swie.in_sem); - -} -/* Brief: Interrupt handler for software cell insertion & extraction - * Parameters: irq - CPPN for this interrupt - * data - Device ID for this interrupt - * regs - Register file - * Description: - * When a software insertion or extractionis finished this interrupt is issued. - */ -void amazon_atm_swie_isr(int irq, void *data, struct pt_regs *regs) -{ - u32 status=0; - // Read status register - status = readl(SWIE_ISTAT_ADDR); - AMAZON_TPE_DMSG("insertion status: %8x\n", status); - if (status & SWIE_ISTAT_DONE){ - //clear interrupt in peripheral and ICU - AMAZON_WRITE_REGISTER_L(SRC_TOS_MIPS | SRC_CLRR|SRC_SRE_ENABLE | AMAZON_SWIE_INT, SWIE_ISRC_ADDR); - mask_and_ack_amazon_irq(AMAZON_SWIE_INT); - - amazon_atm_swin_isr(irq,data,regs); - } - status = readl(SWIE_ESTAT_ADDR); - AMAZON_TPE_DMSG("extraction status: %8x\n", status); - if (status & SWIE_ESTAT_DONE){ - //clear interrupt - AMAZON_WRITE_REGISTER_L(SRC_TOS_MIPS | SRC_CLRR|SRC_SRE_ENABLE | AMAZON_SWIE_INT, SWIE_ESRC_ADDR); - mask_and_ack_amazon_irq(AMAZON_SWIE_INT); - - amazon_atm_swex_isr(irq,data,regs); - } - //clear interrupt in ICU -} - -/* - * Brief: Insert ATM cell into CBM - * Parameters: queue - Target queue - * cell - Pointer to cell data - * Return Value: EBUSY - CBM is busy - * 0 - OK, cell inserted - * Description: - * This function inserts a cell into the CBM using the software insertion - * method. The format of the cell should be - * Little Endian (address starting from 0) - * H3, H2, H1, H0, P3, P2, P1, P0, P7, P6, P5, P4, ..., P47, P46, P45, P44 - * Big Endian (address starting from 0) - * H0, H1, H2, H3, P0, P1, P2, P3, P4, P5, P6, P7, ..., P44, P45, P46, P47 - * This function does not free memory!!! - */ -int amazon_atm_swin(u8 queue, void* cell) -{ - u32 status=0; - int i; - // Read status register - status = readl(SWIE_ISTAT_ADDR); - AMAZON_TPE_DMSG(" SWIE status=0x%08x\n",status); - - AMAZON_TPE_DMSG(" Inserting cell qid=%u\n",queue); - -#ifdef AMAZON_CHECK_LINK - if (adsl_link_status == 0){ - return -EFAULT; - } -#endif //AMAZON_CHECK_LINK - - // Get semaphore (if possible) - if (down_interruptible(&g_atm_dev.swie.in_sem)) { - return -ERESTARTSYS; - } - /* try to set lock */ - wait_event_interruptible(g_atm_dev.swie.sleep,(test_and_set_bit(SWIE_LOCK,&(g_atm_dev.swie.lock)) == 0)); - if (signal_pending(current)){ - return -ERESTARTSYS; - } - - // Store cell in CBM memory - for(i=0;i<ATM_AAL0_SDU;i+=4){ - AMAZON_WRITE_REGISTER_L(((u32*)cell)[i/4],SWIE_ICELL_ADDR+i); - } - //Store queue id - AMAZON_WRITE_REGISTER_L((u32) queue,SWIE_IQID_ADDR); - - //Start SWIE - AMAZON_WRITE_REGISTER_L(SWIE_ICMD_START,SWIE_ICMD_ADDR); - - return 0; -} - -#ifdef AMAZON_ATM_DEBUG -/* - * Brief: Interrupt handler for HTU - * - * Parameters: irq - CPPN for this interrupt - * data - Device ID for this interrupt - * regs - Register file - * - */ -void amazon_atm_htu_isr(int irq, void *data, struct pt_regs *regs) -{ - u32 irq_stat=0; - - // Read interrupt status register - irq_stat = readl(HTU_ISR0_ADDR); - AMAZON_TPE_DMSG("HTU status: %8x\n",irq_stat); - //Clear interrupt in CBM and ICU - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_HTU_INT, HTU_SRC0_ADDR); - mask_and_ack_amazon_irq(AMAZON_HTU_INT); - // Check if Any Cell Arrived - if (irq_stat & (HTU_ISR_NE | HTU_ISR_PNE) ) { - AMAZON_TPE_EMSG("INFNOENTRY %8x\n", readl(HTU_INFNOENTRY_ADDR)); - }else if (irq_stat & (HTU_ISR_TORD|HTU_ISR_PT)){ - AMAZON_TPE_EMSG("Time Out %8x\n", readl(HTU_INFTIMEOUT_ADDR)); - }else if (irq_stat & HTU_ISR_IT){ - AMAZON_TPE_EMSG("Interrupt Test\n"); - }else if (irq_stat & HTU_ISR_OTOC){ - AMAZON_TPE_EMSG("Overflow of Time Out Counter\n"); - }else if (irq_stat & HTU_ISR_ONEC){ - AMAZON_TPE_EMSG("Overflow of No Entry Counter\n"); - }else{ - AMAZON_TPE_EMSG("unknown HTU interrupt occurs %8x\n", irq_stat); - } - -} -#endif //AMAZON_ATM_DEBUG - -#ifdef AMAZON_TPE_TEST_AAL5_INT -/* - * Brief: Interrupt handler for AAL5 - * - * Parameters: irq - CPPN for this interrupt - * data - Device ID for this interrupt - * regs - Register file - * - */ -void amazon_atm_aal5_isr(int irq, void *data, struct pt_regs *regs) -{ - volatile u32 irq_stat=0; - - // Read interrupt status register - irq_stat = readl(AAL5_SISR0_ADDR); - if (irq_stat){ - AMAZON_TPE_EMSG("A5S status: %8x\n",irq_stat); - //Clear interrupt in CBM and ICU - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_AAL5_INT, AAL5_SSRC0_ADDR); - mask_and_ack_amazon_irq(AMAZON_AAL5_INT); - } - irq_stat = readl(AAL5_RISR0_ADDR); - if (irq_stat){ - AMAZON_TPE_EMSG("A5R status: %8x\n",irq_stat); - //Clear interrupt in CBM and ICU - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_AAL5_INT, AAL5_RSRC0_ADDR); - mask_and_ack_amazon_irq(AMAZON_AAL5_INT); - } -} -#endif //AMAZON_TPE_TEST_AAL5_INT - -/* - * Brief: Interrupt handler for CBM - * - * Parameters: irq - CPPN for this interrupt - * data - Device ID for this interrupt - * regs - Register file - * - * Description: - * This is the MIPS interrupt handler for the CBM. It processes incoming cells - * for SWIE queues. - */ -void amazon_atm_cbm_isr(int irq, void *data, struct pt_regs *regs) -{ - u32 irq_stat=0; - u8 qid=0; - - // Read interrupt status register - while ( (irq_stat = readl(CBM_INTINF0_ADDR))){ - AMAZON_TPE_DMSG("CBM INT status: %8x\n",irq_stat); - //Clear interrupt in CBM and ICU - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_CBM_INT, CBM_SRC0_ADDR); - qid = (u8) ((irq_stat & CBM_INTINF0_QID_MASK)>>CBM_INTINF0_QID_SHIFT); -#ifdef AMAZON_TPE_SCR - if (irq_stat & CBM_INTINF0_EF){ - amazon_atm_a5r((void*)qid); - } -#endif - // Check if Any Cell Arrived - if (irq_stat & CBM_INTINF0_ACA) { - amazon_atm_swex((void *)irq_stat); - } - //TX AAL5 PDU discard - if (irq_stat & CBM_INTINF0_OPF){ - if ( (qid) < CBM_RX_OFFSET ){ - g_atm_dev.mib_counter.tx_drop++; - } - queue_statics(qid, QS_HW_DROP); - } - if (irq_stat & (CBM_INTINF0_ERR|CBM_INTINF0_Q0E|CBM_INTINF0_Q0I|CBM_INTINF0_RDE)){ - AMAZON_TPE_EMSG("CBM INT status: %8x\n",irq_stat); - if (irq_stat & CBM_INTINF0_ERR){ - AMAZON_TPE_EMSG("CBM Error: FPI Bus Error\n"); - } - if (irq_stat & CBM_INTINF0_Q0E){ - AMAZON_TPE_EMSG("CBM Error: Queue 0 Extract\n"); - } - if (irq_stat & CBM_INTINF0_Q0I){ - AMAZON_TPE_EMSG("CBM Error: Queue 0 Extract\n"); - } - if (irq_stat & CBM_INTINF0_RDE){ - AMAZON_TPE_EMSG("CBM Error: Read Empty Queue %u\n",qid); - dump_qd(qid); - } - } - } - mask_and_ack_amazon_irq(AMAZON_CBM_INT); -} - -/* Brief: check the status word after AAL SDU after reassembly - */ -static inline void check_aal5_error(u8 stw0, u8 stw1, int qid) -{ - if (stw0 & AAL5_STW0_MFL){ - AMAZON_TPE_DMSG("Maximum Frame Length\n"); - g_atm_dev.queues[qid].aal5VccOverSizedSDUs++; - } - if (stw0 & AAL5_STW0_CRC){ - AMAZON_TPE_DMSG("CRC\n"); - g_atm_dev.queues[qid].aal5VccCrcErrors++; - } -#ifdef AMAZON_ATM_DEBUG_RX - AMAZON_TPE_EMSG("qid:%u stw0:%8x stw1:%8x\n",qid,stw0,stw1); -#endif -} - -/* Brief: Process DMA rx data - * Parameters: - dma_dev: pointer to the dma_device_info, provided by us when register the dma device - * Return: no - * Description: DMA interrupt handerl with OoS support. It is called when there is some data in rx direction. - * - */ -//507261:tc.chen void atm_process_dma_rx(struct dma_device_info* dma_dev) -void __system atm_process_dma_rx(struct dma_device_info* dma_dev) -{ - u8 * head=NULL; - u32 length=0; - u8 stw0=0; - u8 stw1=0; - - struct sk_buff * skb=NULL; - struct atm_vcc * vcc=NULL; - int qid=0; -#ifdef AMAZON_ATM_DEBUG_RX - static int dma_rx_dump=0; - static u32 seq=0; - - seq++; - if (dma_rx_dump>0){ - printk("\n=========================[%u]=========================\n",seq); - } -#endif - length=dma_device_read(dma_dev,&head,(void**)&skb); - AMAZON_TPE_DMSG("receive %8p[%u] from DMA\n", head,length); - if (head == NULL||length<=0) { - AMAZON_TPE_DMSG("dma_read null \n"); - goto error_exit; - } - - if (length > (g_atm_dev.aal5.rx_max_sdu+64)){ - AMAZON_TPE_EMSG("received packet too large (%u)\n",length); - goto error_exit; - } - //check AAL5R trail for error and qid - //last byte is qid - length--; - qid = (int) head[length]; - AMAZON_TPE_DMSG("head[%u] qid %u\n",length, qid); - //STW0 is always 4 bytes before qid - length -= 4; - stw0 = head[length]&0xff; - AMAZON_TPE_DMSG("head[%u] stw0 %8x\n",length, stw0); - //position of STW1 depends on the BE bits - length = length-4 + (stw0&AAL5_STW0_BE); - stw1 = head[length]&0xff; - AMAZON_TPE_DMSG("head[%u] stw1 %8x\n",length, stw1); - if ( (stw0 & AAL5_STW0_MASK) || (stw1 & AAL5_STW1_MASK) ){ - //AAL5 Error - check_aal5_error(stw0, stw1,qid); - goto error_exit; - } - //make data pointers consistent - //UU + CPI - length -= 2; - AMAZON_TPE_DMSG("packet length %u\n", length); - - //error: cannot restore the qid - if (valid_qid(qid) != 1){ - AMAZON_TPE_EMSG("received frame in invalid qid %u!\n", qid); - goto error_exit; - } - vcc = g_atm_dev.queues[qid].vcc; - if (vcc == NULL){ - AMAZON_TPE_EMSG("received frame in invalid vcc, qid=%u!\n",qid); - goto error_exit; - } - if (skb == NULL){ - AMAZON_TPE_EMSG("cannot restore skb pointer!\n"); - goto error_exit; - } - skb_put(skb,length); - skb->stamp = xtime; - g_atm_dev.queues[qid].access_time=xtime; - if ((*g_atm_dev.queues[qid].push)(vcc,skb,0)){ - g_atm_dev.mib_counter.rx_drop++; - queue_statics(qid, QS_SW_DROP); - }else{ - g_atm_dev.mib_counter.rx++; - adsl_led_flash();//joelin adsl led - queue_statics(qid, QS_PKT); - AMAZON_TPE_DMSG("push successful!\n"); - } -#ifdef AMAZON_ATM_DEBUG_RX - if (dma_rx_dump>0){ - printk("\nOK packet [dump=%u] length=%u\n",dma_rx_dump,length); - dump_skb(length+7, head); - } - if (dma_rx_dump >0) dma_rx_dump--; -#endif - return ; -error_exit: -#ifdef AMAZON_ATM_DEBUG_RX - if ( (head!=NULL) && (length >0)){ - AMAZON_TPE_EMSG("length=%u\n",length); - dump_skb(length+5, head); - } - dma_rx_dump++; -#endif - g_atm_dev.mib_counter.rx_err++; - queue_statics(qid, QS_ERR); - /* - if (vcc){ - (*g_atm_dev.queues[qid].push)(vcc,skb,1); - } - */ - if (skb != NULL) { - dev_kfree_skb_any(skb); - } - return; -} - -/*Brief: ISR for DMA pseudo interrupt - *Parameter: - dma_dev: pointer to the dma_device_info, provided by us when register the dma device - intr_status: - RCV_INT: rx data available - TX_BUF_FULL_INT: tx descriptor run out of - TRANSMIT_CPT_INT: tx descriptor available again - *Return: - 0 for success??? - */ -//507261:tc.chen int amazon_atm_dma_handler(struct dma_device_info* dma_dev, int intr_status) -int __system amazon_atm_dma_handler(struct dma_device_info* dma_dev, int intr_status) -{ - AMAZON_TPE_DMSG("status:%u\n",intr_status); - switch (intr_status) { - case RCV_INT: - atm_process_dma_rx(dma_dev); - break; - case TX_BUF_FULL_INT: - //TX full: no descriptors - atm_dma_full(); - break; - case TRANSMIT_CPT_INT: - //TX free: at least one descriptor - atm_dma_free(); - break; - default: - AMAZON_TPE_EMSG("unknown status!\n"); - } - return 0; -} - -/*Brief: free buffer for DMA tx - *Parameter: - dataptr: pointers to data buffer - opt: optional parameter, used to convey struct skb pointer, passwd in dma_device_write - *Return: - 0 for success??? - *Description: - called by DMA module to release data buffer after DMA tx transaction - *Error: - cannot restore skb pointer - */ -int amazon_atm_free_tx(u8*dataptr, void* opt) -{ - struct sk_buff *skb; - if (opt){ - AMAZON_TPE_DMSG("free skb%8p\n",opt); - skb = (struct sk_buff *)opt; - amazon_atm_free_tx_skb(skb); - }else{ - AMAZON_TPE_EMSG("BUG: cannot restore skb pointer!\n"); - } - return 0; -} - -/*Brief: allocate buffer & do alignment - */ -inline struct sk_buff * amazon_atm_alloc_buffer(int len) -{ - struct sk_buff *skb; - skb = dev_alloc_skb(len+16); - if (skb){ - //alignment requriements (4x32 bits (16 bytes) boundary) - alloc_align_16(skb); - } - return skb; -} - -/*Brief: allocate buffer for DMA rx - *Parameter: - len: length - opt: optional data to convey the skb pointer, which will be returned to me in interrupt handler, - *Return: - pointer to buffer, NULL means error? - *Description: - must make sure byte alignment - */ - -u8* amazon_atm_alloc_rx(int len, int* offset, void **opt) -{ - struct sk_buff *skb; - *offset = 0; - skb = amazon_atm_alloc_buffer(len); - if (skb){ - AMAZON_TPE_DMSG("alloc skb->data:%8p len:%u\n",skb->data,len); - *(struct sk_buff**)opt = skb; - }else{ - AMAZON_TPE_DMSG("no memory for receiving atm frame!\n"); - return NULL; - } - return skb->data; -} - - - - -/* Brief: Allocate kernel memory for sending a datagram. - * Parameters - * vcc virtual connection - * size data buffer size - * Return: - * NULL fail - * sk_buff a pointer to a sk_buff - * Description: - * This function can allocate our own additional memory for AAL5S inbound - * header (8bytes). We have to replace the protocol default one (alloc_tx in /net/atm/common.c) - * when we open the device. - * byte alignment is done is DMA driver. - */ -struct sk_buff *amazon_atm_alloc_tx(struct atm_vcc *vcc,unsigned int size) -{ - struct sk_buff *skb; - - if (!dma_may_send(DMA_TX_CH0)){ - AMAZON_TPE_EMSG("no DMA descriptor available!\n"); - return NULL; - } - //AAL5 inbound header space + alignment extra buffer - size+=8+AAL5S_INBOUND_HEADER; - - if (atomic_read(&vcc->tx_inuse) && !atm_may_send(vcc,size)) { - AMAZON_TPE_EMSG("Sorry tx_inuse = %u, size = %u, sndbuf = %u\n", - atomic_read(&vcc->tx_inuse),size,vcc->sk->sndbuf); - return NULL; - } - - skb = amazon_atm_alloc_buffer(size); - if (skb == NULL){ - AMAZON_TPE_EMSG("no memory\n"); - return NULL; - } - AMAZON_TPE_DMSG("dev_alloc_skb(%u) = %x\n", skb->len, (u32)skb); - AMAZON_TPE_DMSG("tx_inuse %u += %u\n",atomic_read(&vcc->tx_inuse),skb->truesize); - atomic_add(skb->truesize+ATM_PDU_OVHD,&vcc->tx_inuse); - - //reserve for AAL5 inbound header - skb_reserve(skb,AAL5S_INBOUND_HEADER); - return skb; -} - - -/* Brief: change per queue QSB setting according to vcc qos parameters - * Paramters: - * vcc: atm_vcc pointer - * qid: CBM queue id (1~15) - * Return: - */ -static inline void set_qsb(struct atm_vcc *vcc, struct atm_qos *qos, int qid) -{ - qsb_qptl_t qptl; - qsb_qvpt_t qvpt; - u32 tmp=0; - unsigned int qsb_clk; - - qsb_clk = amazon_get_fpi_hz()>>1; - - AMAZON_TPE_EMSG("Class=%u MAX_PCR=%u PCR=%u MIN_PCR=%u SCR=%u MBS=%u CDV=%u\n" - ,qos->txtp.traffic_class - ,qos->txtp.max_pcr - ,qos->txtp.pcr - ,qos->txtp.min_pcr - ,qos->txtp.scr - ,qos->txtp.mbs - ,qos->txtp.cdv - ); - - // PCR limiter - if (qos->txtp.max_pcr == 0){ - qptl.bit.tprs = 0; /* 0 disables the PCR limiter */ - }else { - // peak cell rate will be slightly lower than requested (maximum rate / pcr)= (qsbclock/2^3 * timestep/4)/pcr - tmp = (( (qsb_clk * g_atm_dev.qsb.tstepc)>>5)/ qos->txtp.max_pcr ) + 1; - // check if an overfow occured - if (tmp > QSB_TP_TS_MAX) { - AMAZON_TPE_EMSG("max_pcr is too small, max_pcr:%u tprs:%u\n",qos->txtp.max_pcr, tmp); - qptl.bit.tprs = QSB_TP_TS_MAX; - }else{ - qptl.bit.tprs = tmp; - } - } - //WFQ - if (qos->txtp.traffic_class == ATM_CBR || qos->txtp.traffic_class ==ATM_VBR_RT){ - // real time queue gets weighted fair queueing bypass - qptl.bit.twfq = 0; - }else if (qos->txtp.traffic_class ==ATM_VBR_NRT ||qos->txtp.traffic_class ==ATM_UBR_PLUS ){ - // wfq calculation here are based on virtual cell rates, to reduce granularity for large rates - // wfq factor is maximum cell rate / garenteed cell rate. - //qptl.bit.twfq = g_atm_dev.qsb.min_cr * QSB_WFQ_NONUBR_MAX / qos->txtp.min_pcr; - if (qos->txtp.min_pcr == 0) { - AMAZON_TPE_EMSG("<warning> MIN_PCR should not be zero\n"); - qptl.bit.twfq = QSB_WFQ_NONUBR_MAX; - }else{ - tmp = QSB_GCR_MIN * QSB_WFQ_NONUBR_MAX / qos->txtp.min_pcr; - if (tmp == 0 ){ - qptl.bit.twfq = 1; - }else if (tmp > QSB_WFQ_NONUBR_MAX){ - AMAZON_TPE_EMSG("min_pcr is too small, min_pcr:%u twfq:%u\n",qos->txtp.min_pcr, tmp); - qptl.bit.twfq = QSB_WFQ_NONUBR_MAX; - }else{ - qptl.bit.twfq = tmp; - } - } - }else if (qos->txtp.traffic_class == ATM_UBR){ - // ubr bypass, twfq set to maximum value - qptl.bit.twfq = QSB_WFQ_UBR_BYPASS; - }else{ - //tx is diabled, treated as UBR - AMAZON_TPE_EMSG("<warning> unsupported traffic class %u \n", qos->txtp.traffic_class); - qos->txtp.traffic_class = ATM_UBR; - qptl.bit.twfq = QSB_WFQ_UBR_BYPASS; - } - - //SCR Leaky Bucket Shaper VBR.0/VBR.1 - if (qos->txtp.traffic_class ==ATM_VBR_RT || qos->txtp.traffic_class ==ATM_VBR_NRT){ - if (qos->txtp.scr == 0){ - //SCR == 0 disable the shaper - qvpt.bit.ts = 0; - qvpt.bit.taus = 0; - }else{ - //CLP - if (vcc->atm_options&ATM_ATMOPT_CLP){ - //CLP1 - qptl.bit.vbr = 1; - }else{ - //CLP0 - qptl.bit.vbr = 0; - } - //TS and TauS - tmp = (( (qsb_clk * g_atm_dev.qsb.tstepc)>>5)/ qos->txtp.scr ) + 1; - if (tmp > QSB_TP_TS_MAX) { - AMAZON_TPE_EMSG("scr is too small, scr:%u ts:%u\n",qos->txtp.scr, tmp); - qvpt.bit.ts = QSB_TP_TS_MAX; - }else{ - qvpt.bit.ts = tmp; - } - tmp = (qos->txtp.mbs - 1)*(qvpt.bit.ts - qptl.bit.tprs)/64; - if (tmp > QSB_TAUS_MAX){ - AMAZON_TPE_EMSG("mbs is too large, mbr:%u taus:%u\n",qos->txtp.mbs, tmp); - qvpt.bit.taus = QSB_TAUS_MAX; - }else if (tmp == 0){ - qvpt.bit.taus = 1; - }else{ - qvpt.bit.taus = tmp; - } - } - }else{ - qvpt.w0 = 0; - } - //write the QSB Queue Parameter Table (QPT) - AMAZON_WRITE_REGISTER_L(QSB_QPT_SET_MASK,QSB_RTM_ADDR); - AMAZON_WRITE_REGISTER_L(qptl.w0, QSB_RTD_ADDR); - AMAZON_WRITE_REGISTER_L((QSB_TABLESEL_QPT<<QSB_TABLESEL_SHIFT) - | QSB_RAMAC_REG_LOW - | QSB_WRITE - | qid - ,QSB_RAMAC_ADDR); - //write the QSB Queue VBR Parameter Table (QVPT) - AMAZON_WRITE_REGISTER_L(QSB_QVPT_SET_MASK,QSB_RTM_ADDR); - AMAZON_WRITE_REGISTER_L(qvpt.w0, QSB_RTD_ADDR); - AMAZON_WRITE_REGISTER_L((QSB_TABLESEL_QVPT<<QSB_TABLESEL_SHIFT) - | QSB_RAMAC_REG_LOW - | QSB_WRITE - | qid - ,QSB_RAMAC_ADDR); - AMAZON_TPE_EMSG("tprs:%u twfq:%u ts:%u taus:%u\n",qptl.bit.tprs,qptl.bit.twfq,qvpt.bit.ts,qvpt.bit.taus); -} - -/* - * Brief: create/change CBM queue descriptor - * Parameter: - * vcc: atm_vcc pointer - * qid: CBM queue id (1~15) - */ -static inline void set_qd(struct atm_vcc *vcc, u32 qid) -{ - u32 tx_config=0,rx_config=0; - u32 itf = (u32) vcc->itf; - u32 dma_qos=0; - u8 * qd_addr=NULL; - - tx_config|=CBM_QD_W3_WM_EN|CBM_QD_W3_CLPt; - //RT: check if the connection is a real time connection - if (vcc->qos.txtp.traffic_class == ATM_CBR || vcc->qos.txtp.traffic_class == ATM_VBR_RT){ - tx_config|= CBM_QD_W3_RT; - }else{ - tx_config|= CBM_QD_W3_AAL5; //don't set the AAL5 flag if it is a RT service - } - rx_config = tx_config; - - if(vcc->qos.aal == ATM_AAL5){ - //QoS: DMA QoS according to the traffic class - switch (vcc->qos.txtp.traffic_class){ - case ATM_CBR: dma_qos = CBR_DMA_QOS;break; - case ATM_VBR_RT: dma_qos = VBR_RT_DMA_QOS;break; - case ATM_VBR_NRT: dma_qos = VBR_NRT_DMA_QOS;break; - case ATM_UBR_PLUS: dma_qos = UBR_PLUS_DMA_QOS;break; - case ATM_UBR: dma_qos = UBR_DMA_QOS;break; - } - - //TX: upstream, AAL5(EPD or PPD), NOINT, SBid - tx_config |= CBM_QD_W3_DIR_UP|CBM_QD_W3_INT_NOINT|(itf&CBM_QD_W3_SBID_MASK); - //RX: DMA QoS, downstream, no interrupt, AAL5(EPD, PPD), NO INT, HCR -#ifdef AMAZON_TPE_SCR - rx_config |= dma_qos|CBM_QD_W3_DIR_DOWN|CBM_QD_W3_INT_EOF; -#else - rx_config |= dma_qos|CBM_QD_W3_DIR_DOWN|CBM_QD_W3_INT_NOINT|CBM_QD_W3_HCR; -#endif - }else { - //should be AAL0 - //upstream, NOINT, SBid - tx_config |= CBM_QD_W3_DIR_UP|CBM_QD_W3_INT_NOINT|(itf&CBM_QD_W3_SBID_MASK); - //RX: downstream, ACA interrupt, - rx_config |= CBM_QD_W3_DIR_DOWN|CBM_QD_W3_INT_ACA; - } - - //Threshold: maximum threshold for tx/rx queue, which is adjustable in steps of 64 cells - tx_config |= ( (divide_by_64_round_up(tx_q_threshold)&0xffff)<<CBM_QD_W3_THRESHOLD_SHIFT) & CBM_QD_W3_THRESHOLD_MASK; - rx_config |= ( (divide_by_64_round_up(rx_q_threshold)&0xffff)<<CBM_QD_W3_THRESHOLD_SHIFT) & CBM_QD_W3_THRESHOLD_MASK; - - qd_addr = (u8*) KSEG1ADDR((unsigned long)g_atm_dev.cbm.qd_addr); - //TX - AMAZON_WRITE_REGISTER_L(tx_config, (qd_addr+qid*CBM_QD_SIZE + 0xc)); - AMAZON_WRITE_REGISTER_L(0, (qd_addr+qid*CBM_QD_SIZE + 0x8)); - //RX - AMAZON_WRITE_REGISTER_L(rx_config, (qd_addr+(qid+CBM_RX_OFFSET)*CBM_QD_SIZE + 0xc)); - AMAZON_WRITE_REGISTER_L(0, (qd_addr+(qid+CBM_RX_OFFSET)*CBM_QD_SIZE + 0x8)); -} -/* - * Brief: add HTU table entry - * Parameter: - * vpi.vci: - * qid: CBM queue id (DEST is qid + CBM_RX_OFFSET) - * idx: entry id (starting from zero to 14) - * Return: - * 0: sucessful - * EIO: HTU table entry cannot be written - */ - -inline int set_htu_entry(u8 vpi, u16 vci, u8 qid, u8 idx) -{ - int i = 0; - u32 tmp1=0; - while ((tmp1 = readl(HTU_RAMSTAT_ADDR))!=0 && i < 1024) i++; - if (i > 1024) - { - AMAZON_TPE_EMSG("timeout\n"); - return -EIO; - } - // write address register, - AMAZON_WRITE_REGISTER_L(idx, HTU_RAMADDR_ADDR); - // configure transmit queue - tmp1 = vpi<<24|vci<<8; - tmp1|= HTU_RAMDAT1_VCON // valid connection the entry is not validated here !!!!!!!!!!!!!!!! - |HTU_RAMDAT1_VCI3 // vci3 -> oam queue - |HTU_RAMDAT1_VCI4 // vci4 -> oam queue - |HTU_RAMDAT1_VCI6 // vci6 -> rm queue - |HTU_RAMDAT1_PTI4 // pti4 -> oam queue - |HTU_RAMDAT1_PTI5; // pti5 -> oam queue - - // ramdat 1 (in params & oam handling) - AMAZON_WRITE_REGISTER_L( tmp1, HTU_RAMDAT1_ADDR); - // ramdat 2 (out params & oam handling) - tmp1 = ((qid+CBM_RX_OFFSET)&HTU_RAMDAT2_QID_MASK) - |HTU_RAMDAT2_PTI6 - |HTU_RAMDAT2_PTI7 - |HTU_RAMDAT2_F4U - |HTU_RAMDAT2_F5U - ; - AMAZON_WRITE_REGISTER_L( tmp1, HTU_RAMDAT2_ADDR); - wmb(); - // write HTU entry - AMAZON_WRITE_REGISTER_L(HTU_RAMCMD_WR, HTU_RAMCMD_ADDR); - return 0; -} -/* - * Brief: add HTU table entry - * Parameter: - * vcc: atm_vcc pointer - * qid: CBM queue id - * Return: - * 0: sucessful - * EIO: HTU table entry cannot be written - */ -inline static int set_htu(struct atm_vcc *vcc, u32 qid) -{ - return set_htu_entry(vcc->vpi, vcc->vci, qid, (qid - CBM_DEFAULT_Q_OFFSET)); -} - -/* - * Brief: allocate a queue - * Return: - * <=0 no available queues - * >0 qid - */ -static int atm_allocate_q(short itf) -{ - int i; - u32 tmp1=0; - int qid=0; - amazon_atm_port_t * dev; - dev = &g_atm_dev.ports[itf]; - //find start queue id for this interface - for (i=0; i< itf; i++) - { - qid+= g_atm_dev.ports[i].max_conn; - } - // apply default queue offset ( oam, free cell queue, others, rm ) - qid += CBM_DEFAULT_Q_OFFSET; - tmp1 = qid; - // search for a free queue - while ( (qid<tmp1+dev->max_conn) - && ( g_atm_dev.queues[qid].free != 1)) { - qid++;; - } - // if none was found, send failure message and return - if ( tmp1+dev->max_conn == qid) - { - return -EFAULT; - } - return qid; - -} -/* Brief: open a aal5 or aal0 connection - */ -static int atm_open(struct atm_vcc *vcc, push_back_t push) -{ - int err=0; - int qid=0; - amazon_atm_port_t * port = & g_atm_dev.ports[vcc->itf]; - unsigned long flags; - /***************** check bandwidth ******************/ - /* 511045:linmars change ATM_VBR_NRT to use scr instead of pcr */ - if ((vcc->qos.txtp.traffic_class==ATM_CBR&&vcc->qos.txtp.max_pcr>port->tx_rem_cr) - ||(vcc->qos.txtp.traffic_class==ATM_VBR_RT&&vcc->qos.txtp.max_pcr>port->tx_rem_cr) - ||(vcc->qos.txtp.traffic_class==ATM_VBR_NRT&&vcc->qos.txtp.scr>port->tx_rem_cr) - ||(vcc->qos.txtp.traffic_class==ATM_UBR_PLUS&&vcc->qos.txtp.min_pcr>port->tx_rem_cr) - ) { - AMAZON_TPE_EMSG("not enough bandwidth left (%u) cells per seconds \n",port->tx_rem_cr); - return -EINVAL; - } - if ( (qid = amazon_atm_find_vpivci(vcc->vpi, vcc->vci)) >0 ){ - AMAZON_TPE_EMSG("vpi:%u vci:%u is alreay open on queue:%u\n", vcc->vpi, vcc->vci, qid); - return -EADDRINUSE; - } - - /***************** allocate entry queueID for this port *****************/ - if ( (qid=atm_allocate_q(vcc->itf)) <= 0){ - AMAZON_TPE_EMSG("port: %u max:%u qid: %u\n", vcc->itf, port->max_conn, qid); - AMAZON_TPE_EMSG("no availabel connections for this port:%u\n",vcc->itf); - return -EINVAL; - } - /**************QSB parameters and CBM descriptors*************/ - set_qsb(vcc, &vcc->qos, qid); - set_qd(vcc, qid); - mb(); - err=set_htu(vcc,qid); - if (err){ - AMAZON_TPE_EMSG("set htu entry fails %u\n",err); - return err; - } - /************set internal mapping*************/ - local_irq_save(flags); - g_atm_dev.queues[qid].free = 0; - g_atm_dev.queues[qid].vcc = vcc; - g_atm_dev.queues[qid].push = push; - g_atm_dev.queues[qid+CBM_RX_OFFSET].free = 0; - g_atm_dev.queues[qid+CBM_RX_OFFSET].vcc = vcc; - g_atm_dev.queues[qid+CBM_RX_OFFSET].push = push; - /******************reserve bandwidth**********************/ - if (vcc->qos.txtp.traffic_class == ATM_CBR){ - //CBR, real time connection, reserve PCR - port->tx_cur_cr += vcc->qos.txtp.max_pcr; - port->tx_rem_cr -= vcc->qos.txtp.max_pcr; - }else if (vcc->qos.txtp.traffic_class == ATM_VBR_RT){ - //VBR_RT, real time connection, reserve PCR - port->tx_cur_cr += vcc->qos.txtp.max_pcr; - port->tx_rem_cr -= vcc->qos.txtp.max_pcr; - }else if (vcc->qos.txtp.traffic_class == ATM_VBR_NRT){ - //VBR_NRT, reserve SCR - port->tx_cur_cr += vcc->qos.txtp.pcr; - port->tx_rem_cr -= vcc->qos.txtp.pcr; - }else if (vcc->qos.txtp.traffic_class == ATM_UBR_PLUS){ - //UBR_PLUS, reserve MCR - port->tx_cur_cr += vcc->qos.txtp.min_pcr; - port->tx_rem_cr -= vcc->qos.txtp.min_pcr; - } - local_irq_restore(flags); - return err; -} -/* Brief: Open ATM connection - * Parameters: atm_vcc - Pointer to VCC data structure - * vpi - VPI value for new connection - * vci - VCI value for new connection - * - * Return: 0 - sucessful - * -ENOMEM - No memory available - * -EINVAL - No bandwidth/queue/ or unsupported AAL type - * Description: - * This function opens an ATM connection on a specific device/interface - * - */ -int amazon_atm_open(struct atm_vcc *vcc,push_back_t push) -{ - int err=0; - - AMAZON_TPE_DMSG("vpi %u vci %u itf %u aal %u\n" - ,vcc->vpi - ,vcc->vci - ,vcc->itf - ,vcc->qos.aal - ); - - AMAZON_TPE_DMSG("tx cl %u bw %u mtu %u\n" - ,vcc->qos.txtp.traffic_class - ,vcc->qos.txtp.max_pcr - ,vcc->qos.txtp.max_sdu - ); - AMAZON_TPE_DMSG("rx cl %u bw %u mtu %u\n" - ,vcc->qos.rxtp.traffic_class - ,vcc->qos.rxtp.max_pcr - ,vcc->qos.rxtp.max_sdu - ); - if (vcc->qos.aal == ATM_AAL5 || vcc->qos.aal == ATM_AAL0){ - err = atm_open(vcc,push); - }else{ - AMAZON_TPE_EMSG("unsupported aal type %u\n", vcc->qos.aal); - err = -EPROTONOSUPPORT; - }; - if (err == 0 ){ - //replace the default memory allocation function with our own - vcc->alloc_tx = amazon_atm_alloc_tx; - set_bit(ATM_VF_READY,&vcc->flags); - } - return err; -} - -/* Brief: Send ATM OAM cell - * Parameters: atm_vcc - Pointer to VCC data structure - * skb - Pointer to sk_buff structure, that contains the data - * Return: 0 - sucessful - * -ENOMEM - No memory available - * -EINVAL - Not supported - * Description: - * This function sends a cell over and ATM connection - * We always release the skb - * TODO: flags handling (ATM_OF_IMMED, ATM_OF_INRATE) - */ -int amazon_atm_send_oam(struct atm_vcc *vcc, void * cell, int flags) -{ - int err=0; - int qid=0; - struct amazon_atm_cell_header * cell_header; - // Get cell header - cell_header = (struct amazon_atm_cell_header*) cell; - if ((cell_header->bit.pti == ATM_PTI_SEGF5) || (cell_header->bit.pti == ATM_PTI_E2EF5)) { - qid = amazon_atm_find_vpivci( cell_header->bit.vpi, cell_header->bit.vci); - }else if (cell_header->bit.vci == 0x3 || cell_header->bit.vci == 0x4) { - //507281:tc.chen qid = amazon_atm_find_vpi((int) cell_header->bit.vpi); - // 507281:tc.chen start - u8 f4_vpi; - f4_vpi = cell_header->bit.vpi; - qid = amazon_atm_find_vpi(f4_vpi ); - // 507281:tc.chen end - }else{ - //non-OAM cells, always invalid - qid = -EINVAL; - } - if (qid == -EINVAL) { - err = -EINVAL; - AMAZON_TPE_EMSG("not valid AAL0 packet\n"); - }else{ - //send the cell using swie -#ifdef TPE_LOOPBACK - err = amazon_atm_swin(AMAZON_ATM_OAM_Q_ID, cell); -#else - err = amazon_atm_swin(qid, cell); -#endif - } - //kfree(cell); - return err; -} - -/* Brief: Send AAL5 frame through DMA - * Parameters: vpi - virtual path id - * vci - virtual circuit id - * clp - cell loss priority - * qid - CBM queue to be sent to - * skb - packet to be sent - * Return: 0 - sucessful - * -ENOMEM - No memory available - * -EINVAL - Not supported - * Description: - * This function sends a AAL5 frame over and ATM connection - * 1. make sure that the data is aligned to 4x32-bit boundary - * 2. provide the inbound data (CPCS-UU and CPI, not used here) - * 3. set CLPn - * 4. send the frame by DMA - * 5. release the buffer ??? - ** use our own allocation alloc_tx - ** we make sure the alignment and additional memory - *** we always release the skb - - */ -int amazon_atm_dma_tx(u8 vpi, u16 vci, u8 clp, u8 qid, struct sk_buff *skb) -{ - int err=0,need_pop=1; - u32 * data=NULL; - int nwrite=0; - struct sk_buff *skb_tmp; - u32 len=skb->len; - - //AAL5S inbound header 8 bytes - if (skb->len > g_atm_dev.aal5.tx_max_sdu - AAL5S_INBOUND_HEADER) { - AMAZON_TPE_DMSG("tx_max_sdu:%u\n",g_atm_dev.aal5.tx_max_sdu); - AMAZON_TPE_DMSG("skb too large [%u]!\n",skb->len); - err = -EMSGSIZE; - goto atm_dma_tx_error_exit; - } - - //Check the byte alignment requirement and header space - if ( ( ((u32)(skb->data)%16) !=AAL5S_INBOUND_HEADER)|| (skb_headroom(skb)<AAL5S_INBOUND_HEADER)){ - //not aligned or no space for header, fall back to memcpy - skb_tmp = dev_alloc_skb(skb->len+16); - if (skb_tmp==NULL){ - err = - ENOMEM; - goto atm_dma_tx_error_exit; - } - alloc_align_16(skb_tmp); - g_atm_dev.aal5.cnt_cpy++; - skb_reserve(skb_tmp,AAL5S_INBOUND_HEADER); - memcpy(skb_put(skb_tmp,skb->len), skb->data, skb->len); - amazon_atm_free_tx_skb(skb); - need_pop=0; - skb = skb_tmp; - } - //Provide AAL5S inbound header - data = (u32 *)skb_push(skb,8); - data[0] = __be32_to_cpu(vpi<<20|vci<<4|clp); - data[1] = __be32_to_cpu(g_atm_dev.aal5.padding_byte<<8|qid); - - len = skb->len; - - //send through DMA - AMAZON_TPE_DMSG("AAL5S header 0 %8x\n", data[0]); - AMAZON_TPE_DMSG("AAL5S header 0 %8x\n", data[1]); - AMAZON_TPE_DMSG("about to call dma_write len: %u\n", len); - nwrite=dma_device_write( &g_dma_dev,skb->data,len,skb); - if (nwrite != len) { - //DMA descriptors full -// AMAZON_TPE_EMSG("AAL5 packet drop due to DMA nwrite:%u skb->len:%u\n", nwrite,len); - AMAZON_TPE_DMSG("AAL5 packet drop due to DMA nwrite:%u skb->len:%u\n", nwrite,len); - err = -EAGAIN; - goto atm_dma_tx_drop_exit; - } - AMAZON_TPE_DMSG("just finish call dma_write\n"); - //release in the "dma done" call-back - return 0; -atm_dma_tx_error_exit: - g_atm_dev.mib_counter.tx_err++; - queue_statics(qid, QS_ERR); - goto atm_dma_tx_exit; - -atm_dma_tx_drop_exit: - g_atm_dev.mib_counter.tx_drop++; - queue_statics(qid, QS_SW_DROP); -atm_dma_tx_exit: - if (need_pop){ - amazon_atm_free_tx_skb(skb); - }else{ - dev_kfree_skb_any(skb); - } - return err; -} - -/* Brief: Send AAL0/AAL5 packet - * Parameters: atm_vcc - Pointer to VCC data structure - * skb - Pointer to sk_buff structure, that contains the data - * Return: 0 - sucessful - * -ENOMEM - No memory available - * -EINVAL - Not supported - * Description: - * See amazon_atm_dma_tx - */ -int amazon_atm_send(struct atm_vcc *vcc,struct sk_buff *skb) -{ - int qid=0; - u8 clp=0; - int err=0; - u32 wm=0; - - if (vcc == NULL || skb == NULL){ - AMAZON_TPE_EMSG("invalid parameter\n"); - return -EINVAL; - } - ATM_SKB(skb)->vcc = vcc; - qid = amazon_atm_get_queue(vcc); - if (valid_qid(qid) != 1) { - AMAZON_TPE_EMSG("invalid vcc!\n"); - err = -EINVAL; - goto atm_send_err_exit; - } - - //Send AAL0 using SWIN - if (vcc->qos.aal == ATM_AAL0){ -#ifdef TPE_LOOPBACK - err=amazon_atm_swin((qid+CBM_RX_OFFSET), skb->data); -#else - err=amazon_atm_swin(qid, skb->data); -#endif - if (err){ - goto atm_send_err_exit; - } - goto atm_send_exit; - } - - //Should be AAl5 - //MIB counter - g_atm_dev.mib_counter.tx++; - adsl_led_flash();//joelin adsl led - queue_statics(qid, QS_PKT); - -#ifdef AMAZON_CHECK_LINK - //check adsl link - if (adsl_link_status == 0){ - //link down - AMAZON_TPE_DMSG("ADSL link down, discarded!\n"); - err=-EFAULT; - goto atm_send_drop_exit; - } -#endif - clp = (vcc->atm_options&ATM_ATMOPT_CLP)?1:0; - //check watermark first - wm = readl(CBM_WMSTAT0_ADDR); - if ( (wm & (1<<qid)) - ||( (vcc->qos.txtp.traffic_class != ATM_CBR - &&vcc->qos.txtp.traffic_class != ATM_VBR_RT) - &(wm & (CBM_WM_NRT_MASK | (clp&CBM_WM_CLP1_MASK)) ))){ - //wm hit: discard - AMAZON_TPE_DMSG("watermark hit, discarded!\n"); - err=-EFAULT; - goto atm_send_drop_exit; - } -#ifdef TPE_LOOPBACK - return amazon_atm_dma_tx(vcc->vpi, vcc->vci,clp, (qid+CBM_RX_OFFSET),skb); -#else - return amazon_atm_dma_tx(vcc->vpi, vcc->vci,clp, qid,skb); -#endif - -atm_send_exit: - amazon_atm_free_tx_skb_vcc(vcc,skb); - return 0; - -atm_send_drop_exit: - g_atm_dev.mib_counter.tx_drop++; - queue_statics(qid,QS_SW_DROP); -atm_send_err_exit: - amazon_atm_free_tx_skb_vcc(vcc,skb); - return err; -} - -/* Brief: Return ATM port related MIB - * Parameter: interface number - atm_cell_ifEntry_t - */ -int amazon_atm_cell_mib(atm_cell_ifEntry_t* to,u32 itf) -{ - g_atm_dev.mib_counter.htu_unp += readl(HTU_MIBCIUP); - to->ifInUnknownProtos = g_atm_dev.mib_counter.htu_unp; -#ifdef AMAZON_TPE_READ_ARC - u32 reg_val=0; - meiDebugRead((AR_CELL0_ADDR+itf*4),®_val,1); - g_atm_dev.mib_counter.rx_cells += reg_val; - reg_val=0; - meiDebugWrite((AR_CELL0_ADDR+itf*4),®_val,1); - to->ifHCInOctets_h = (g_atm_dev.mib_counter.rx_cells * 53)>>32; - to->ifHCInOctets_l = (g_atm_dev.mib_counter.rx_cells * 53) & 0xffff; - - meiDebugRead((AT_CELL0_ADDR+itf*4),®_val,1); - g_atm_dev.mib_counter.tx_cells += reg_val; - reg_val=0; - meiDebugWrite((AT_CELL0_ADDR+itf*4),®_val,1); - to->ifHCOutOctets_h = (g_atm_dev.mib_counter.tx_cells * 53)>>32; - to->ifHCOutOctets_l = (g_atm_dev.mib_counter.rx_cells * 53) & 0xffff; - - meiDebugRead((AR_CD_CNT0_ADDR+itf*4),®_val,1); - g_atm_dev.mib_counter.rx_err_cells += reg_val; - reg_val=0; - meiDebugWrite((AR_CD_CNT0_ADDR+itf*4),®_val,1); - to->ifInErrors = g_atm_dev.mib_counter.rx_err_cells; - - to->ifOutErrors = 0; -#else - to->ifHCInOctets_h = 0; - to->ifHCInOctets_l = 0; - to->ifHCOutOctets_h = 0; - to->ifHCOutOctets_l = 0; - to->ifInErrors = 0; - to->ifOutErrors = 0; -#endif - return 0; -} - -/* Brief: Return ATM AAL5 related MIB - * Parameter: - atm_aal5_ifEntry_t - */ -int amazon_atm_aal5_mib(atm_aal5_ifEntry_t* to) -{ - u32 reg_l,reg_h; - //AAL5R received Octets from ATM - reg_l = readl(AAL5_RIOL_ADDR); - reg_h = readl(AAL5_RIOM_ADDR); - g_atm_dev.mib_counter.rx_cnt_h +=reg_h; - if (reg_l + g_atm_dev.mib_counter.rx_cnt_l < reg_l){ - g_atm_dev.mib_counter.rx_cnt_h++; - } - - g_atm_dev.mib_counter.rx_cnt_l+= reg_l; - //AAL5S sent Octets to ATM - reg_l = readl(AAL5_SOOL_ADDR); - reg_h = readl(AAL5_SOOM_ADDR); - g_atm_dev.mib_counter.tx_cnt_h +=reg_h; - if (reg_l + g_atm_dev.mib_counter.tx_cnt_l < reg_l){ - g_atm_dev.mib_counter.tx_cnt_h++; - } - g_atm_dev.mib_counter.tx_cnt_l+= reg_l; - - - g_atm_dev.mib_counter.tx_ppd += readl(CBM_AAL5ODIS_ADDR); - g_atm_dev.mib_counter.rx_drop += readl(CBM_AAL5IDIS_ADDR); - - //store - to->ifHCInOctets_h = g_atm_dev.mib_counter.rx_cnt_h; - to->ifHCInOctets_l = g_atm_dev.mib_counter.rx_cnt_l; - to->ifHCOutOctets_h = g_atm_dev.mib_counter.tx_cnt_h; - to->ifHCOutOctets_l = g_atm_dev.mib_counter.tx_cnt_l; - to->ifOutDiscards = g_atm_dev.mib_counter.tx_drop; - to->ifInDiscards = g_atm_dev.mib_counter.rx_drop; - - //Software provided counters - //packets passed to higher layer - to->ifInUcastPkts = g_atm_dev.mib_counter.rx; - //packets passed from higher layer - to->ifOutUcastPkts = g_atm_dev.mib_counter.tx; - //number of wrong downstream packets - to->ifInErrors = g_atm_dev.mib_counter.rx_err; - //number of wrong upstream packets - to->ifOutErros = g_atm_dev.mib_counter.tx_err; - - return 0; -} -/* Brief: Return ATM AAL5 VCC related MIB from internale use - * Parameter: - * qid - * atm_aal5_vcc_t - */ -static int __amazon_atm_vcc_mib(int qid, atm_aal5_vcc_t* to) -{ - //aal5VccCrcErrors - to->aal5VccCrcErrors = g_atm_dev.queues[qid].aal5VccCrcErrors; - to->aal5VccOverSizedSDUs =g_atm_dev.queues[qid].aal5VccOverSizedSDUs; - to->aal5VccSarTimeOuts = 0; //not supported yet - return 0; -} -/* Brief: Return ATM AAL5 VCC related MIB from vpi/vci - * Parameter: atm_vcc - * atm_aal5_vcc_t - */ -int amazon_atm_vcc_mib_x(int vpi, int vci,atm_aal5_vcc_t* to) -{ - int qid=0; - int err=0; - qid = amazon_atm_find_vpivci(vpi, vci); - if (qid >0 ){ - err = __amazon_atm_vcc_mib(qid,to); - }else{ - return -EINVAL; - } - return err; -} - - -/* Brief: Return ATM AAL5 VCC related MIB - * Parameter: atm_vcc - * atm_aal5_vcc_t - */ -int amazon_atm_vcc_mib(struct atm_vcc *vcc,atm_aal5_vcc_t* to) -{ - int qid=0; - int err=0; - qid = amazon_atm_get_queue(vcc); - if (qid >0 ){ - err = __amazon_atm_vcc_mib(qid,to); - }else{ - return -EINVAL; - } - return err; -} - -/* Brief: Close ATM connection - * Parameters: atm_vcc - Pointer to VCC data structure - * Return: no - * Description: - * This function closes the given ATM connection - */ -void amazon_atm_close(struct atm_vcc *vcc){ - int i; - int qid=0; - u32 tmp1; - u8 * qd_addr; - unsigned long flags; - if (vcc == NULL){ - AMAZON_TPE_EMSG("invalid parameter. vcc is null\n"); - return; - } - u32 itf = (u32) vcc->itf; - //release bandwidth - if (vcc->qos.txtp.traffic_class == ATM_CBR){ - g_atm_dev.ports[itf].tx_rem_cr += vcc->qos.txtp.max_pcr; - g_atm_dev.ports[itf].tx_cur_cr -= vcc->qos.txtp.max_pcr; - }else if (vcc->qos.txtp.traffic_class == ATM_VBR_RT){ - g_atm_dev.ports[itf].tx_rem_cr += vcc->qos.txtp.max_pcr; - g_atm_dev.ports[itf].tx_cur_cr -= vcc->qos.txtp.max_pcr; - }else if (vcc->qos.txtp.traffic_class == ATM_VBR_NRT){ - g_atm_dev.ports[itf].tx_rem_cr += vcc->qos.txtp.pcr; - g_atm_dev.ports[itf].tx_cur_cr -= vcc->qos.txtp.pcr; - }else if (vcc->qos.txtp.traffic_class == ATM_UBR_PLUS){ - g_atm_dev.ports[itf].tx_rem_cr += vcc->qos.txtp.min_pcr; - g_atm_dev.ports[itf].tx_cur_cr -= vcc->qos.txtp.min_pcr; - } - - qid = amazon_atm_get_queue(vcc); - if (qid == -EINVAL){ - AMAZON_TPE_EMSG("unknown vcc %u.%u.%u\n", vcc->itf, vcc->vpi, vcc->vci); - return; - } - local_irq_save(flags); - //Disable HTU entry - i=0; - while ((tmp1 = readl(HTU_RAMSTAT_ADDR))!=0 && i < HTU_RAM_ACCESS_MAX) i++; - if (i == HTU_RAM_ACCESS_MAX){ - AMAZON_TPE_EMSG("HTU RAM ACCESS out of time\n"); - } - - // write address register - AMAZON_WRITE_REGISTER_L(qid - CBM_DEFAULT_Q_OFFSET, HTU_RAMADDR_ADDR); - // invalidate the connection - AMAZON_WRITE_REGISTER_L(0, HTU_RAMDAT1_ADDR); - // write command - AMAZON_WRITE_REGISTER_L(HTU_RAMCMD_WR,HTU_RAMCMD_ADDR); - - qd_addr = (u8 *) KSEG1ADDR((unsigned long)g_atm_dev.cbm.qd_addr); -#ifdef AMAZON_ATM_DEBUG - tmp1 = readl(qd_addr+qid*CBM_QD_SIZE+0x8) & 0xffff; - AMAZON_TPE_DMSG("TX queue has %u cells \n", tmp1); - tmp1 = readl( qd_addr+(qid+CBM_RX_OFFSET)*CBM_QD_SIZE+0x08)&0xffff; - AMAZON_TPE_DMSG("RX queue has %u cells \n", tmp1); -#endif - // set threshold of txqueue to 0 - tmp1 = readl(qd_addr+qid*CBM_QD_SIZE+0x0c); - tmp1&= (~ CBM_QD_W3_THRESHOLD_MASK); - AMAZON_WRITE_REGISTER_L(tmp1, (qd_addr+qid*CBM_QD_SIZE+0x0c)); - // set threshold of rxqueue to 0 - tmp1 = readl( qd_addr+(qid+CBM_RX_OFFSET)*CBM_QD_SIZE+0x0c); - tmp1&= (~ CBM_QD_W3_THRESHOLD_MASK); - AMAZON_WRITE_REGISTER_L(tmp1,(qd_addr+(qid+CBM_RX_OFFSET)*CBM_QD_SIZE+0x0c)); - - //clear internal mapping - amazon_atm_clear_vcc(qid); - amazon_atm_clear_vcc(qid+CBM_RX_OFFSET); - - local_irq_restore(flags); -} - - -/* Brief: initialize internal data structure - */ -static void atm_constructor(amazon_atm_dev_t * dev) -{ - int i; - memset(dev,0,sizeof(amazon_atm_dev_t)); - atm_init_parameters(dev); - //internal: queue "free" flag - for(i=1;i<AMAZON_ATM_MAX_QUEUE_NUM;i++) { - //dev->queues[i].vcc=NULL; - dev->queues[i].free = 1; - } - for(i=0;i<AMAZON_ATM_PORT_NUM;i++){ - dev->ports[i].tx_rem_cr = dev->ports[i].tx_max_cr; - } - //MIB - atomic_set(&dev->dma_tx_free_0,1); //initially there should be free descriptors -} - -/* Brief: return round up base-2 logarithm - */ -static inline int get_log_2(u32 value) -{ - int i=0,j=1; - while (i<11){ - if (j>=value) break; - j=j<<1; - i++; - } - AMAZON_TPE_DMSG("round up base-2 logarithm of %u is %u\n", value, i); - return i; -} - -/* Brief: TPE hardware initialization - * Parameter: specifiy the configurations of the hardware - */ -static inline int atm_init_hard(amazon_atm_dev_t * dev) -{ - int i; - u32 tmp1, tmp2, tmp3; - u8 * mem_addr=NULL; - u8 * qd_addr=NULL; - //PMU power on the module 1st - *(AMAZON_PMU_PWDCR) = (*AMAZON_PMU_PWDCR) | (AMAZON_PMU_PWDCR_TPE); - //Reset the module - *(AMAZON_RST_REQ) = (* AMAZON_RST_REQ) | (AMAZON_RST_REQ_TPE); - mb(); - mdelay(100); - *(AMAZON_RST_REQ) = (* AMAZON_RST_REQ) & (~(AMAZON_RST_REQ_TPE)); - mb(); - - unsigned long qsb_clk = amazon_get_fpi_hz()>>1; - /*********allocate & arrange memory for CBM *********/ - if (dev->cbm.mem_addr == NULL){ - dev->cbm.allocated = 1; - mem_addr = (u8 *)__get_free_pages(GFP_KERNEL, get_log_2(((CBM_CELL_SIZE * dev->cbm.free_cell_cnt) >>PAGE_SHIFT) + 1)); - if (mem_addr != NULL){ - dev->cbm.mem_addr = mem_addr; - } else { - goto init_no_mem; - } - } - if (dev->cbm.qd_addr == NULL){ -#ifdef CONFIG_USE_VENUS - //to work around a bug, bit15 of QDOFF address should be 1,Aug4, 2004 - //thus, we allocate 64k memory - qd_addr = (u8 *)__get_free_pages(GFP_KERNEL, 4); - if (qd_addr != NULL) { - dev->cbm.qd_addr_free = (u8*) (((unsigned long) qd_addr)); - dev->cbm.qd_addr = (u8*) (((unsigned long) qd_addr) | 0x8000); - }else{ - goto init_no_mem; - } -#else //CONFIG_USE_VENUS - qd_addr = (u8 *)kmalloc( CBM_QD_SIZE * AMAZON_ATM_MAX_QUEUE_NUM, GFP_KERNEL); - if (qd_addr != NULL) { - dev->cbm.qd_addr = qd_addr; - }else { - goto init_no_mem; - } -#endif //CONFIG_USE_VENUS - } -//#ifndef CONFIG_MIPS_UNCACHED - mem_addr = (u8 *)KSEG1ADDR((unsigned long)dev->cbm.mem_addr); - qd_addr = (u8 *)KSEG1ADDR((unsigned long)dev->cbm.qd_addr); -//#endif - //CBM reset cell queue memory, 64 bytes / cell - memset_io(mem_addr, 0, CBM_CELL_SIZE * dev->cbm.free_cell_cnt); - //make a link list, last 4 bytes is pointer - for(i=1;i<dev->cbm.free_cell_cnt;i++){ - AMAZON_WRITE_REGISTER_L(CPHYSADDR((mem_addr + CBM_CELL_SIZE * i)),(mem_addr + CBM_CELL_SIZE * (i-1) + 0x3c)); - } - //reset queue descriptor - memset_io(qd_addr, 0, CBM_QD_SIZE * AMAZON_ATM_MAX_QUEUE_NUM); - //init word 0-2 of q0 (free cell list) - //address of last cell - AMAZON_WRITE_REGISTER_L(CPHYSADDR((mem_addr + CBM_CELL_SIZE * (dev->cbm.free_cell_cnt-1))), qd_addr); - //address of first cell - AMAZON_WRITE_REGISTER_L(CPHYSADDR((mem_addr)), (qd_addr + 4)); - //no. of free cells - AMAZON_WRITE_REGISTER_L(dev->cbm.free_cell_cnt,(qd_addr + 8)); - //init q descriptor for OAM receiving - AMAZON_WRITE_REGISTER_L((CBM_QD_W3_INT_ACA | (divide_by_64_round_up(oam_q_threshold)&0xff)<< CBM_QD_W3_THRESHOLD_SHIFT), (qd_addr + AMAZON_ATM_OAM_Q_ID * CBM_QD_SIZE + 0x0c)); -// AMAZON_WRITE_REGISTER_L((CBM_QD_W3_INT_ACA | (u32)oam_q_threshold<< CBM_QD_W3_THRESHOLD_SHIFT), (qd_addr + AMAZON_ATM_OAM_Q_ID * CBM_QD_SIZE + 0x0c)); - //config CBM - //set offset address and threshold - AMAZON_WRITE_REGISTER_L(CPHYSADDR(qd_addr), CBM_QDOFF_ADDR); - AMAZON_WRITE_REGISTER_L(((dev->cbm.nrt_thr&CBM_THR_MASK)|CBM_WM_3_1), CBM_NRTTHR_ADDR); - AMAZON_WRITE_REGISTER_L(((dev->cbm.clp0_thr&CBM_THR_MASK)|CBM_WM_3_1), CBM_CLP0THR_ADDR); - AMAZON_WRITE_REGISTER_L(((dev->cbm.clp1_thr&CBM_THR_MASK)|CBM_WM_3_1), CBM_CLP1THR_ADDR); - //config interrupts - AMAZON_WRITE_REGISTER_L( CBM_IMR_MASK & (~(CBM_IMR_ACA|CBM_IMR_Q0E|CBM_IMR_Q0I|CBM_IMR_RDE|CBM_IMR_OPF|CBM_IMR_ERR -#ifdef AMAZON_ATM_DEBUG - |CBM_IMR_DISC|CBM_IMR_QFD|CBM_IMR_NFCA|CBM_IMR_CLP1TR|CBM_IMR_CLP0TR|CBM_IMR_NRTTR|CBM_IMR_QTR -#endif -#ifdef AMAZON_TPE_SCR - |CBM_IMR_EF -#endif - )), CBM_IMR0_ADDR); - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_CBM_INT, CBM_SRC0_ADDR); - - //HTU - //RAM entry for number of possible connections per interface - tmp1 = dev->ports[0].max_conn?dev->ports[0].max_conn-1:0; - AMAZON_WRITE_REGISTER_L(tmp1, HTU_RX0_ADDR); - for(i=1;i<AMAZON_ATM_PORT_NUM;i++){ - tmp1+=dev->ports[i].max_conn; - AMAZON_WRITE_REGISTER_L(tmp1, HTU_RX0_ADDR + 4 * i); - } - dev->cbm.max_q_off = tmp1+1; - //Queue ID for OAM/RM/Other cells - AMAZON_WRITE_REGISTER_L (AMAZON_ATM_OAM_Q_ID, HTU_DESTOAM_ADDR); - AMAZON_WRITE_REGISTER_L( AMAZON_ATM_RM_Q_ID, HTU_DESTRM_ADDR); - AMAZON_WRITE_REGISTER_L( AMAZON_ATM_OTHER_Q_ID, HTU_DESTOTHER_ADDR); - //Timeout - AMAZON_WRITE_REGISTER_L((u32) HTUTIMEOUT, HTU_TIMEOUT_ADDR); -#ifdef AMAZON_ATM_DEBUG - AMAZON_WRITE_REGISTER_L((u32) HTU_ISR_MASK - &(~(HTU_ISR_NE|HTU_ISR_TORD|HTU_ISR_OTOC|HTU_ISR_ONEC|HTU_ISR_PNE|HTU_ISR_PT)), HTU_IMR0_ADDR); - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS|SRC_SRE_ENABLE|AMAZON_HTU_INT,HTU_SRC0_ADDR); -#endif - //QSB - //global setting, TstepC, SBL, Tau - //Tau - AMAZON_WRITE_REGISTER_L(dev->qsb.tau, QSB_TAU_ADDR); - //SBL - AMAZON_WRITE_REGISTER_L(dev->qsb.sbl, QSB_SBL_ADDR); - //tstep - AMAZON_WRITE_REGISTER_L(dev->qsb.tstepc>>1, QSB_CONFIG_ADDR); - - //port settting - for(i=0;i<AMAZON_ATM_PORT_NUM;i++){ - if ( (dev->ports[i].enable) && (dev->ports[i].tx_max_cr!=0) ){ - tmp1 = ((qsb_clk * dev->qsb.tstepc) >>1) / dev->ports[i].tx_max_cr; - tmp2 = tmp1 / 64; //integer value of Tsb - tmp3 = tmp1%64 + 1; //fractional part of Tsb - //carry over to integer part (?) - if (tmp3 == 64) { - tmp3 = 0; - tmp2++; - } - if (tmp2 == 0){ - tmp2 = 1; - tmp3 = 1; - } - //1. set mask 2. write value to data transfer register 3. start the transfer - //SCT(FracRate) - AMAZON_WRITE_REGISTER_L(QSB_SET_SCT_MASK, QSB_RTM_ADDR); - AMAZON_WRITE_REGISTER_L(tmp3,QSB_RTD_ADDR); - AMAZON_WRITE_REGISTER_L(((QSB_TABLESEL_SCT<<QSB_TABLESEL_SHIFT)|QSB_RAMAC_REG_LOW|QSB_WRITE|i),QSB_RAMAC_ADDR); - //SPT(SBV + PN + IntRage) - AMAZON_WRITE_REGISTER_L(QSB_SET_SPT_MASK, QSB_RTM_ADDR); - AMAZON_WRITE_REGISTER_L(QSB_SPT_SBVALID|tmp2|(i<<16),QSB_RTD_ADDR); - AMAZON_WRITE_REGISTER_L(((QSB_TABLESEL_SPT<<QSB_TABLESEL_SHIFT)|QSB_RAMAC_REG_LOW|QSB_WRITE|i),QSB_RAMAC_ADDR); - - - } - } - - //SWIE: Setup Service Request Control Registers to enable interrupts - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_SWIE_INT, SWIE_ISRC_ADDR); - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_SWIE_INT, SWIE_ESRC_ADDR); - - wmb(); -#ifdef AMAZON_TPE_TEST_AAL5_INT - AMAZON_WRITE_REGISTER_L(AAL5R_ISR_FE,AAL5_RIMR0_ADDR); - AMAZON_WRITE_REGISTER_L(0, AAL5_SIMR0_ADDR); - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_AAL5_INT,AAL5_SSRC0_ADDR); - AMAZON_WRITE_REGISTER_L(SRC_CLRR|SRC_TOS_MIPS | SRC_SRE_ENABLE | AMAZON_AAL5_INT,AAL5_RSRC0_ADDR); -#endif //AMAZON_TPE_TEST_AAL5_INT - - AMAZON_WRITE_REGISTER_L(dev->aal5.tx_max_sdu,AAL5_SMFL_ADDR); - AMAZON_WRITE_REGISTER_L(dev->aal5.rx_max_sdu,AAL5_RMFL_ADDR); - AMAZON_WRITE_REGISTER_L(AAL5_SCMD_MODE_POLL // enable polling mode - |AAL5_SCMD_SS - |AAL5_SCMD_AR - ,AAL5_SCMD_ADDR); - //start CBM - AMAZON_WRITE_REGISTER_L(CBM_CFG_START,CBM_CFG_ADDR); - wmb(); - return 0; -init_no_mem: - if (mem_addr != NULL) free_pages((unsigned long)mem_addr,get_log_2(((CBM_CELL_SIZE * dev->cbm.free_cell_cnt) >>PAGE_SHIFT) + 1)); - -#ifdef CONFIG_USE_VENUS - //to work around a bug, bit15 of QDOFF address should be 1 - if (qd_addr != NULL) free_pages((unsigned long)qd_addr,4); -#else //CONFIG_USE_VENUS - if (qd_addr != NULL) kfree(qd_addr); -#endif //CONFIG_USE_VENUS - return -ENOMEM; -} - -/* - * Brief: Create entry in /proc for status information - */ -void atm_create_proc(void) -{ - create_proc_read_entry("amazon_atm", 0,NULL, amazon_atm_read_procmem,(void*)PROC_ATM); - create_proc_read_entry("amazon_atm_mib", 0,NULL, amazon_atm_read_procmem,(void*)PROC_MIB); - create_proc_read_entry("amazon_atm_vcc", 0,NULL, amazon_atm_read_procmem,(void*)PROC_VCC); -#if 0 - create_proc_read_entry("amazon_atm_aal5", 0,NULL, amazon_atm_read_procmem,(void*)PROC_AAL5); - create_proc_read_entry("amazon_atm_cbm", 0,NULL, amazon_atm_read_procmem,(void*)PROC_CBM); - create_proc_read_entry("amazon_atm_htu", 0,NULL, amazon_atm_read_procmem,(void*)PROC_HTU); - create_proc_read_entry("amazon_atm_qsb", 0,NULL, amazon_atm_read_procmem,(void*)PROC_QSB); - create_proc_read_entry("amazon_atm_swie", 0,NULL, amazon_atm_read_procmem,(void*)PROC_SWIE); -#endif -} - -/* - * Brief: Delete entry in /proc for status information - */ -void atm_delete_proc(void) -{ - remove_proc_entry("amazon_atm", NULL); - remove_proc_entry("amazon_atm_mib", NULL); - remove_proc_entry("amazon_atm_vcc", NULL); -#if 0 - remove_proc_entry("amazon_atm_aal5", NULL); - remove_proc_entry("amazon_atm_cbm", NULL); - remove_proc_entry("amazon_atm_htu", NULL); - remove_proc_entry("amazon_atm_qsb", NULL); - remove_proc_entry("amazon_atm_swie", NULL); -#endif -} -/* Brief: Initialize ATM module - * Parameters: no - * Return: &g_atm_dev - sucessful - * NULL - fails: - * 1. invalid parameter - * 2. No memory available - * Description: - * This function configure the TPE components according to the input info, - * -CBM - * -HTU - * -QSB - * -AAL5 - * - */ -amazon_atm_dev_t * amazon_atm_create(void) -{ - int i; - AMAZON_TPE_DMSG("atm_init\n"); - /************initialize global data structure****************/ - atm_constructor(&g_atm_dev); - /***********allocate kernel resources****************/ - //bottom halfs for SWEX - swex_start_task.routine = amazon_atm_swex; - swex_start_task.data = NULL; - swex_complete_task.routine = amazon_atm_swex_push; - swex_complete_task.data = NULL; -#ifdef AMAZON_TPE_SCR - a5r_task.routine = amazon_atm_a5r; - a5r_task.data = NULL; -#endif //AMAZON_TPE_SCR - //SWIN semaphore - sema_init(&(g_atm_dev.swie.in_sem), 1); - //SWIE lock - clear_bit(SWIE_LOCK, &(g_atm_dev.swie.lock)); - //SWIE wait queue - init_waitqueue_head(&(g_atm_dev.swie.sleep)); - atm_create_proc(); - - //register DMA - memset(&g_dma_dev,0,sizeof(struct dma_device_info)); - strcpy(g_dma_dev.device_name,"TPE"); - g_dma_dev.weight=1; - g_dma_dev.num_tx_chan=2; - g_dma_dev.num_rx_chan=2; - g_dma_dev.ack=1; - g_dma_dev.tx_burst_len=4; - g_dma_dev.rx_burst_len=4; - //DMA TX - - for(i=0;i<1;i++){ - g_dma_dev.tx_chan[i].weight=QOS_DEFAULT_WGT; - g_dma_dev.tx_chan[i].desc_num=10; - g_dma_dev.tx_chan[i].packet_size=g_atm_dev.aal5.tx_max_sdu + AAL5S_INBOUND_HEADER; - g_dma_dev.tx_chan[i].control=1; - } - //DMA RX - for(i=0;i<2;i++){ - g_dma_dev.rx_chan[i].weight=QOS_DEFAULT_WGT; - /* BingTao's suggestion, change from 5->10 will prevent packet loss in NO_TX_INT mode */ - g_dma_dev.rx_chan[i].desc_num=10; - g_dma_dev.rx_chan[i].packet_size=(g_atm_dev.aal5.rx_max_sdu + AAL5R_TRAILER_LEN+0x10f)&(~0xf); - g_dma_dev.rx_chan[i].control=1; - } - g_dma_dev.intr_handler=amazon_atm_dma_handler; - g_dma_dev.buffer_alloc=amazon_atm_alloc_rx; - g_dma_dev.buffer_free=amazon_atm_free_tx; - dma_device_register(&g_dma_dev); -/***********intialize the atm hardware ****************/ - if ( atm_init_hard(&g_atm_dev) != 0){ - return NULL; - } - //start CBM - AMAZON_WRITE_REGISTER_L(CBM_CFG_START,CBM_CFG_ADDR); - wmb(); - - //Start HTU - AMAZON_WRITE_REGISTER_L(HTU_CFG_START ,HTU_CFG_ADDR); - wmb(); - - - // Register interrupts for insertion and extraction - request_irq(AMAZON_SWIE_INT, amazon_atm_swie_isr, IRQF_DISABLED, "tpe_swie", NULL); - request_irq(AMAZON_CBM_INT, amazon_atm_cbm_isr, IRQF_DISABLED, "tpe_cbm", NULL); -#ifdef AMAZON_ATM_DEBUG - request_irq(AMAZON_HTU_INT , amazon_atm_htu_isr, IRQF_DISABLED, "tpe_htu", NULL); -#endif -#ifdef AMAZON_TPE_TEST_AAL5_INT - request_irq(AMAZON_AAL5_INT, amazon_atm_aal5_isr, IRQF_DISABLED, "tpe_aal5", NULL); -#endif - return &g_atm_dev; -} - -/* Brief: clean up atm - * Parameters: no - * Return: no - * Description: - * Disable the device. - */ -void amazon_atm_cleanup(void){ - int i; - clear_bit(SWIE_LOCK, &(g_atm_dev.swie.lock)); - wake_up(&g_atm_dev.swie.sleep); - up(&g_atm_dev.swie.in_sem); - // diable SWIE interrupts - AMAZON_WRITE_REGISTER_L(0, SWIE_ISRC_ADDR); - AMAZON_WRITE_REGISTER_L(0, SWIE_ESRC_ADDR); - wmb(); - - // Disable schedulers ( including interrupts )----------------------- - for (i = 0; i < AMAZON_ATM_PORT_NUM; i++); - { - AMAZON_WRITE_REGISTER_L(QSB_SET_SPT_SBVALID_MASK, QSB_RTM_ADDR); - AMAZON_WRITE_REGISTER_L( 0 ,QSB_RTD_ADDR); - AMAZON_WRITE_REGISTER_L( (QSB_TABLESEL_SPT<<QSB_TABLESEL_SHIFT) - | QSB_RAMAC_REG_LOW - | QSB_WRITE - | i, - QSB_RAMAC_ADDR); - } - // disable QSB_Interrupts - AMAZON_WRITE_REGISTER_L( 0, QSB_IMR_ADDR); - AMAZON_WRITE_REGISTER_L( 0, QSB_SRC_ADDR); - // disable CBM interrupts - AMAZON_WRITE_REGISTER_L( 0 , CBM_IMR0_ADDR); - AMAZON_WRITE_REGISTER_L( 0 , CBM_SRC0_ADDR); - // set CBM start bit to 0 - AMAZON_WRITE_REGISTER_L(0,CBM_CFG_ADDR); - // request hardware extraction of queue 0, wich should force the CBM - // to recognize that the start bit is not set - AMAZON_WRITE_REGISTER_L(CBM_HWEXPAR_PN_A5, CBM_HWEXPAR0_ADDR); - // write frame extraction command into the hw extract command register - AMAZON_WRITE_REGISTER_L(CBM_HWEXCMD_FE0, CBM_HWEXCMD_ADDR); - // disable htu - // disable all HTU interrupts - AMAZON_WRITE_REGISTER_L(0 ,HTU_IMR0_ADDR); - AMAZON_WRITE_REGISTER_L(0 ,HTU_SRC0_ADDR); - - if (g_atm_dev.cbm.allocated){ - free_pages((unsigned long)g_atm_dev.cbm.mem_addr, get_log_2(((CBM_CELL_SIZE * g_atm_dev.cbm.free_cell_cnt) >>PAGE_SHIFT)+1)); -#ifdef CONFIG_USE_VENUS - //to work around a bug, bit15 of QDOFF address should be 1 - free_pages((unsigned long)g_atm_dev.cbm.qd_addr_free,4); -#else //CONFIG_USE_VENUS - kfree(g_atm_dev.cbm.qd_addr); -#endif //CONFIG_USE_VENUS - } - atm_delete_proc(); - // free interrupts for insertion and extraction - dma_device_unregister(&g_dma_dev); - free_irq(AMAZON_SWIE_INT, NULL); - free_irq(AMAZON_CBM_INT, NULL); -#ifdef AMAZON_ATM_DEBUG - free_irq(AMAZON_HTU_INT, NULL); -#endif -#ifdef AMAZON_TPE_TEST_AAL5_INT - free_irq(AMAZON_AAL5_INT, NULL); -#endif - -} - -/************************ ATM network interface ***********************************************/ -/* Brief: getsockopt - */ -int amazon_atm_getsockopt(struct atm_vcc *vcc, int level, int optname, char *optval, int optlen) -{ - int err=0; - atm_aal5_vcc_t mib_vcc; - AMAZON_TPE_DMSG("1\n"); - switch (optname){ - case SO_AMAZON_ATM_MIB_VCC: - AMAZON_TPE_DMSG("2\n"); - err = amazon_atm_vcc_mib(vcc, &mib_vcc); - AMAZON_TPE_DMSG("%u\n",mib_vcc.aal5VccCrcErrors); - err = copy_to_user((void *)optval,&mib_vcc, sizeof(mib_vcc)); - AMAZON_TPE_DMSG("err %u\n",err); - break; - default: - return -EFAULT; - } - return err; -} - -/* Brief: IOCTL - */ - -int amazon_atm_ioctl(struct atm_dev *dev,unsigned int cmd,void *arg) -{ - int err=0; - //MIB - atm_cell_ifEntry_t mib_cell; - atm_aal5_ifEntry_t mib_aal5; - atm_aal5_vcc_x_t mib_vcc; - if (_IOC_TYPE(cmd) != AMAZON_ATM_IOC_MAGIC) return -ENOTTY; - if (_IOC_NR(cmd) > AMAZON_ATM_IOC_MAXNR) return -ENOTTY; - - if (_IOC_DIR(cmd) & _IOC_READ) - err = !access_ok(VERIFY_WRITE, (void *)arg, _IOC_SIZE(cmd)); - else if (_IOC_DIR(cmd) & _IOC_WRITE) - err = !access_ok(VERIFY_READ, (void *)arg, _IOC_SIZE(cmd)); - if (err) { - AMAZON_TPE_EMSG("acess verification fails \n"); - return -EFAULT; - } - switch(cmd) { - case AMAZON_ATM_MIB_CELL: - err = amazon_atm_cell_mib(&mib_cell,(u32)arg); - if (err==0){ - err = __copy_to_user((void *)arg,&mib_cell,sizeof(mib_cell)); - }else{ - AMAZON_TPE_EMSG("cannot get MIB ATM_CELL\n"); - } - break; - case AMAZON_ATM_MIB_AAL5: - err = amazon_atm_aal5_mib(&mib_aal5); - if (err==0){ - err=__copy_to_user(arg, &mib_aal5, sizeof(mib_aal5)); - }else{ - AMAZON_TPE_EMSG("cannot get MIB ATM_AAL5\n"); - } - break; - case AMAZON_ATM_MIB_VCC: - err=__copy_from_user(&mib_vcc,arg, sizeof(mib_vcc)); - AMAZON_TPE_DMSG("return of copy_from_user %x\n",err); - err = amazon_atm_vcc_mib_x(mib_vcc.vpi, mib_vcc.vci, &(mib_vcc.mib_vcc)); - if (err==0){ - err=__copy_to_user(arg, &mib_vcc, sizeof(mib_vcc)); - }else{ - AMAZON_TPE_EMSG("cannot get MIB ATM_VCC\n"); - } - - default: - return -ENOTTY; - } - return err; -} -/* Brief: return a link list of OAM related time stamp info - * Parameter: none - * Return: - a link list of "struct oam_last_activity" data - * Description: - Each time, a F4/F5 cell or AAL5 packet is received, the time stamp is updated. - Through this call, u get a list of this time stamp for all active connection. - Please note that u have read-only access. - */ -const struct oam_last_activity* get_oam_time_stamp() -{ - int i,j; - for(i=CBM_DEFAULT_Q_OFFSET+CBM_RX_OFFSET,j=0;i<CBM_RX_OFFSET+CBM_DEFAULT_Q_OFFSET+AMAZON_ATM_MAX_VCC_NUM;i++){ - if (g_atm_dev.queues[i].free != 1 && g_atm_dev.queues[i].vcc != NULL){ - //active connection - if (j !=0 ){ - g_oam_time_stamp[j-1].next = &g_oam_time_stamp[j]; - } - g_oam_time_stamp[j].vpi = g_atm_dev.queues[i].vcc->vpi; - g_oam_time_stamp[j].vci = g_atm_dev.queues[i].vcc->vci; - g_oam_time_stamp[j].stamp = g_atm_dev.queues[i].access_time; - g_oam_time_stamp[j].next = NULL; - j++; - } - } - if (j==0) { - return NULL; - }else{ - return g_oam_time_stamp; - } -} - - -/* Brief: call back routine for rx - * Parameter: - * vcc atm_vcc pointer - * skb data if no error - err error flag, 0: no error, 1:error - * Return: - * 0 - * <>0 cannot push up - * Description: - * release the packet if cannot push up - */ -static int amazon_atm_net_push(struct atm_vcc *vcc,struct sk_buff *skb, int err) -{ - if (err){ - if (vcc && vcc->stats) { - atomic_inc(&vcc->stats->rx_err); - } - }else{ - ATM_SKB(skb)->vcc = vcc; - - if (!atm_charge(vcc, skb->truesize)){ - //no space this vcc - AMAZON_TPE_EMSG("no space for this vcc\n"); - dev_kfree_skb_any(skb); - return -ENOMEM; - } - atomic_inc(&vcc->stats->rx); - AMAZON_TPE_DMSG("push to vcc\n"); - vcc->push(vcc,skb); - } - return 0; -} -int amazon_atm_net_send_oam(struct atm_vcc*vcc, void *cell, int flags) -{ - return amazon_atm_send_oam(vcc,cell,flags); -} - -int amazon_atm_net_send(struct atm_vcc *vcc,struct sk_buff *skb) -{ - int err=0; - if (vcc->qos.aal == ATM_AAL0 || vcc->qos.aal == ATM_AAL5) { - err=amazon_atm_send(vcc,skb); - }else{ - //not supported - err = -EPROTONOSUPPORT; - } - if (err){ - atomic_inc(&vcc->stats->tx_err); - }else{ - atomic_inc(&vcc->stats->tx); - } - AMAZON_TPE_DMSG("sent, tx_inuse:%u\n", atomic_read(&vcc->tx_inuse)); - return err; -} - -int amazon_atm_net_open(struct atm_vcc *vcc,short vpi, int vci) -{ - vcc->itf = (int) vcc->dev->dev_data; - vcc->vpi = vpi; - vcc->vci = vci; - return(amazon_atm_open(vcc,amazon_atm_net_push)); -} - -static int amazon_atm_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flgs) -{ - int qid; - - if (vcc == NULL || qos == NULL){ - AMAZON_TPE_EMSG("invalid parameters\n"); - return -EINVAL; - } - qid = amazon_atm_get_queue(vcc); - if (valid_qid(qid) != 1) { - AMAZON_TPE_EMSG("no vcc connection opened\n"); - return -EINVAL; - } - set_qsb(vcc,qos,qid); - return 0; -} - -static struct atmdev_ops amazon_atm_ops = { - open: amazon_atm_net_open, - close: amazon_atm_close, - ioctl: amazon_atm_ioctl, - send: amazon_atm_net_send, - send_oam: amazon_atm_net_send_oam, -// getsockopt: amazon_atm_getsockopt, - change_qos: amazon_atm_change_qos, -// proc_read: amazon_atm_proc_read, - owner: THIS_MODULE, -}; // ATM device callback functions - -/* - * brief "/proc" function - */ -int amazon_atm_read_procmem(char *buf, char **start, off_t offset,int count, int *eof, void *data) -{ - int buf_off=0; /* for buf */ - int i=0,j=0; - int type= (u32)data;//which module - atm_aal5_ifEntry_t mib_aal5; - atm_cell_ifEntry_t mib_cell; - atm_aal5_vcc_t mib_vcc; - switch(type){ - case PROC_MIB: - //MIB counter - amazon_atm_aal5_mib(&mib_aal5); - //TX: - buf_off+=sprintf(buf+buf_off,"\n============= AAL5 Upstream =========\n"); - buf_off+=sprintf(buf+buf_off,"received %u (pkts) from upper layer\n", mib_aal5.ifOutUcastPkts); - buf_off+=sprintf(buf+buf_off,"errors: %u (pkts)\n",mib_aal5.ifOutErros); - buf_off+=sprintf(buf+buf_off,"discards: %u (ptks)\n", mib_aal5.ifOutDiscards); - buf_off+=sprintf(buf+buf_off,"transmitted: %x-%x (bytes) \n", - mib_aal5.ifHCOutOctets_h, mib_aal5.ifHCOutOctets_l); - //RX: - buf_off+=sprintf(buf+buf_off,"\n============= AAL5 Downstream =========\n"); - buf_off+=sprintf(buf+buf_off,"received %x-%x (bytes)\n", - mib_aal5.ifHCInOctets_h,mib_aal5.ifHCInOctets_l); - buf_off+=sprintf(buf+buf_off,"discards: %u (ptks)\n",mib_aal5.ifInDiscards); - buf_off+=sprintf(buf+buf_off,"errors: %u (ptks)\n",mib_aal5.ifInErrors); - buf_off+=sprintf(buf+buf_off,"passed %u (ptks) to upper layer\n",mib_aal5.ifInUcastPkts); - - //Cell level - buf_off+=sprintf(buf+buf_off,"\n============= ATM Cell =========\n"); - amazon_atm_cell_mib(&mib_cell,0); -#ifdef AMAZON_TPE_READ_ARC - buf_off+=sprintf(buf+buf_off,"Port 0: downstream received: %x-%x (bytes)\n",mib_cell.ifHCInOctets_h,mib_cell.ifHCInOctets_l); - buf_off+=sprintf(buf+buf_off,"Port 0: upstream transmitted: %x-%x (bytes)\n",mib_cell.ifHCOutOctets_h,mib_cell.ifHCOutOctets_l); - buf_off+=sprintf(buf+buf_off,"Port 0: downstream errors: %u (cells)\n",mib_cell.ifInErrors); - amazon_atm_cell_mib(&mib_cell,1); - buf_off+=sprintf(buf+buf_off,"Port 1: downstream received: %x-%x (bytes)\n",mib_cell.ifHCInOctets_h,mib_cell.ifHCInOctets_l); - buf_off+=sprintf(buf+buf_off,"Port 1: upstream transmitted: %x-%x (bytes)\n",mib_cell.ifHCOutOctets_h,mib_cell.ifHCOutOctets_l); - buf_off+=sprintf(buf+buf_off,"Port 1: downstream errors: %u (cells)\n",mib_cell.ifInErrors); -#endif - buf_off+=sprintf(buf+buf_off,"HTU discards: %u (cells)\n",mib_cell.ifInUnknownProtos); - - buf_off+=sprintf(buf+buf_off,"\n====== Specials =====\n"); - buf_off+=sprintf(buf+buf_off,"AAL5S PPD: %u (cells)\n",g_atm_dev.mib_counter.tx_ppd); -#ifdef AMAZON_TPE_SCR - buf_off+=sprintf(buf+buf_off,"Reassembly wait: %u \n",g_a5r_wait); -#endif - break; - case PROC_ATM: - //Interface (Port) - buf_off+=sprintf(buf+buf_off,"[Interfaces]\n"); - for(i=0;i<AMAZON_ATM_PORT_NUM;i++){ - if (g_atm_dev.ports[i].enable==0){ - buf_off+=sprintf(buf+buf_off,"\tport[%u] not in use\n",i); - }else{ - buf_off+=sprintf(buf+buf_off,"\tport[%u]\n\t\tmax_conn=%u\n" - ,i - ,g_atm_dev.ports[i].max_conn - ); - buf_off+=sprintf(buf+buf_off,"\t\ttx_max=%u\n\t\trem=%u\n\t\tcur=%u\n" - ,g_atm_dev.ports[i].tx_max_cr - ,g_atm_dev.ports[i].tx_rem_cr - ,g_atm_dev.ports[i].tx_cur_cr - ); - } - - } - //Units Info - //AAL5 - buf_off+=sprintf(buf+buf_off,"[AAL5]\n\tpad=%c(%x)\n\trx_mtu=%u\n\ttx_mtu=%u\n" - ,g_atm_dev.aal5.padding_byte - ,g_atm_dev.aal5.padding_byte - ,g_atm_dev.aal5.rx_max_sdu - ,g_atm_dev.aal5.tx_max_sdu - ); - //CBM - buf_off+=sprintf(buf+buf_off, - "[CBM]\n\tnrt_thr=%u\n\tclp0_thr=%u\n\tclp1_thr=%u\n\ttx_q_threshold=%u\n\trx_q_threshold=%u\n\toam_q_threshold=%u\n\tfree_cell_cnt=%u\n" - ,g_atm_dev.cbm.nrt_thr - ,g_atm_dev.cbm.clp0_thr - ,g_atm_dev.cbm.clp1_thr - ,tx_q_threshold - ,rx_q_threshold - ,oam_q_threshold - ,g_atm_dev.cbm.free_cell_cnt - ); - //QSB - buf_off+=sprintf(buf+buf_off,"[QSB]\n\ttau=%u\n\ttstepc=%u\n\tsbl=%u\n" - ,g_atm_dev.qsb.tau - ,g_atm_dev.qsb.tstepc - ,g_atm_dev.qsb.sbl - ); - buf_off+=sprintf(buf+buf_off,"[Debugging]\n\taal5_need_copy=%u\n",g_atm_dev.aal5.cnt_cpy); - break; - case PROC_VCC: - for(i=CBM_DEFAULT_Q_OFFSET,j=0;i<g_atm_dev.cbm.max_q_off+CBM_DEFAULT_Q_OFFSET;i++){ - if (g_atm_dev.queues[i].free!=1){ - buf_off+=sprintf(buf+buf_off,"vcc[%u]\n\tvpi=%u vci=%u itf=%u qid=%u access_time=%u.%u\n" - ,j++ - ,g_atm_dev.queues[i].vcc->vpi - ,g_atm_dev.queues[i].vcc->vci - ,g_atm_dev.queues[i].vcc->itf - ,i - ,(u32)g_atm_dev.queues[i+CBM_RX_OFFSET].access_time.tv_sec - ,(u32)g_atm_dev.queues[i+CBM_RX_OFFSET].access_time.tv_usec - ); - buf_off+=sprintf(buf+buf_off,"\tqos_tx class=%u max_pcr=%u pcr=%u min_pcr=%u scr=%u mbs=%u cdv=%u\n" - ,g_atm_dev.queues[i].vcc->qos.txtp.traffic_class - ,g_atm_dev.queues[i].vcc->qos.txtp.max_pcr - ,g_atm_dev.queues[i].vcc->qos.txtp.pcr - ,g_atm_dev.queues[i].vcc->qos.txtp.min_pcr - ,g_atm_dev.queues[i].vcc->qos.txtp.scr - ,g_atm_dev.queues[i].vcc->qos.txtp.mbs - ,g_atm_dev.queues[i].vcc->qos.txtp.cdv - ); - buf_off+=sprintf(buf+buf_off,"\tqos_rx class=%u max_pcr=%u pcr=%u min_pcr=%u scr=%u mbs=%u cdv=%u\n" - ,g_atm_dev.queues[i].vcc->qos.rxtp.traffic_class - ,g_atm_dev.queues[i].vcc->qos.rxtp.max_pcr - ,g_atm_dev.queues[i].vcc->qos.rxtp.pcr - ,g_atm_dev.queues[i].vcc->qos.rxtp.min_pcr - ,g_atm_dev.queues[i].vcc->qos.rxtp.scr - ,g_atm_dev.queues[i].vcc->qos.rxtp.mbs - ,g_atm_dev.queues[i].vcc->qos.rxtp.cdv - ); - __amazon_atm_vcc_mib((i+CBM_RX_OFFSET),&mib_vcc); - buf_off+=sprintf(buf+buf_off,"\tCRC error=%u\n", mib_vcc.aal5VccCrcErrors); - buf_off+=sprintf(buf+buf_off,"\toversized packet=%u\n", mib_vcc.aal5VccOverSizedSDUs); -#ifdef AMAZON_ATM_DEBUG - if ( valid_qid(i+CBM_RX_OFFSET)){ - buf_off+=sprintf(buf+buf_off,"\tdownstream statics\n" ); - buf_off+=sprintf(buf+buf_off,"\t\tpackets=%u\n",g_atm_dev.queues[i+CBM_RX_OFFSET].qs[QS_PKT]); - buf_off+=sprintf(buf+buf_off,"\t\terr_packets=%u\n",g_atm_dev.queues[i+CBM_RX_OFFSET].qs[QS_ERR] ); - buf_off+=sprintf(buf+buf_off,"\t\tsw_dropped=%u\n",g_atm_dev.queues[i+CBM_RX_OFFSET].qs[QS_SW_DROP] ); - } - - buf_off+=sprintf(buf+buf_off,"\tupstream statics\n" ); - buf_off+=sprintf(buf+buf_off,"\t\tpackets=%u\n",g_atm_dev.queues[i].qs[QS_PKT]); - buf_off+=sprintf(buf+buf_off,"\t\terr_packets=%u\n",g_atm_dev.queues[i].qs[QS_ERR] ); - buf_off+=sprintf(buf+buf_off,"\t\thw_dropped=%u\n",g_atm_dev.queues[i].qs[QS_HW_DROP] ); - buf_off+=sprintf(buf+buf_off,"\t\tsw_dropped=%u\n",g_atm_dev.queues[i].qs[QS_SW_DROP] ); - -#endif - - } - - } - break; - default: - break; - } - if(buf_off>0) *eof = 1; - return buf_off; -} - -#ifdef AMAZON_TPE_AAL5_RECOVERY -extern int (*tpe_reset)(void); -extern int (*tpe_start)(void); -extern int (*tpe_inject)(void); -/* Brief: Reset TPE hardware - * Description - * This is a wordaround for AAL5 bug. It tries to reset TPE. - * take care of software - * setup all previous connection - */ -int amazon_tpe_reset(void) -{ - struct atm_vcc * vcc; - int err=0; - int i; - u8 * qd_addr; - u32 reg_l, reg_h; - unsigned int a_cfg_value=0; - unsigned int a_cfg_old_value=0; - atm_aal5_ifEntry_t mib_aal5; - atm_cell_ifEntry_t mib_cell; - - //make sure all cells transmitting out first - //Segmentation done - amazon_atm_aal5_mib(&mib_aal5); - reg_l = g_atm_dev.mib_counter.tx_cnt_l; - reg_h = g_atm_dev.mib_counter.tx_cnt_h; - while(1){ - mdelay(10); - amazon_atm_aal5_mib(&mib_aal5); - if( (reg_l == g_atm_dev.mib_counter.tx_cnt_l) && (reg_h == g_atm_dev.mib_counter.tx_cnt_h) ){ - break; - } - AMAZON_TPE_DMSG("AAL5 Segmentation still in progress!\n"); - reg_l = g_atm_dev.mib_counter.tx_cnt_l; - reg_h = g_atm_dev.mib_counter.tx_cnt_h; - } - //QSB done - qd_addr = (u8 *) KSEG1ADDR((unsigned long)g_atm_dev.cbm.qd_addr); - for (i=1;i<15;i++){ - while ( (err=readl(qd_addr+i*CBM_QD_SIZE+0x8)&0xffff) !=0 ){ - mdelay(20); - AMAZON_TPE_DMSG("queue %u not empty (%u)\n",i,err); - } - } - //insurance for interfaces between Aware and CARB - mdelay(100); - amazon_atm_cell_mib(&mib_cell,0); - amazon_atm_cell_mib(&mib_cell,1); - amazon_atm_aal5_mib(&mib_aal5); - - mb(); - while ( (AMAZON_READ_REGISTER_L(AR_CELLRDY_BC0) != 0 ) || (AMAZON_READ_REGISTER_L(AR_CELLRDY_BC0) != 0 ) ){ - AMAZON_TPE_EMSG("\nwaiting for AWARE"); - AMAZON_TPE_EMSG(" BC0 %u ", AMAZON_READ_REGISTER_L(AR_CELLRDY_BC0)); - AMAZON_TPE_EMSG(" BC1 %u ", AMAZON_READ_REGISTER_L(AR_CELLRDY_BC1)); - AMAZON_TPE_EMSG("\n"); - mdelay(1); - } - // disable AAI module - meiDebugRead(A_CFG_ADDR,&a_cfg_value,1); - a_cfg_old_value=a_cfg_value; - a_cfg_value &= (~(0x2800)); - meiDebugWrite(A_CFG_ADDR,&a_cfg_value,1); - //clear buffer - a_cfg_value = 0x1; - meiDebugWrite(AR_CB0_STATUS_ADDR,&a_cfg_value,1); - meiDebugWrite(AR_CB1_STATUS_ADDR,&a_cfg_value,1); - - if ( atm_init_hard(&g_atm_dev) != 0){ - return -EIO; - } - sema_init(&(g_atm_dev.swie.in_sem), 1); - //SWIE lock - clear_bit(SWIE_LOCK, &(g_atm_dev.swie.lock)); - //SWIE wait queue - init_waitqueue_head(&(g_atm_dev.swie.sleep)); - - for (i=CBM_DEFAULT_Q_OFFSET;i<AMAZON_ATM_MAX_QUEUE_NUM/2;i++) { - vcc = g_atm_dev.queues[i].vcc; - if (vcc != NULL){ - set_qsb(vcc, &vcc->qos, i); - set_qd(vcc, i); - mb(); - err=set_htu(vcc,i); - if (err){ - AMAZON_TPE_EMSG("set htu entry fails %u\n",err); - } - } - } - meiDebugWrite(A_CFG_ADDR,&a_cfg_old_value,1); -#if 0 - //reset DFE - *(AMAZON_RST_REQ) = (* AMAZON_RST_REQ) | (AMAZON_RST_REQ_DFE); - mb(); - *(AMAZON_RST_REQ) = (* AMAZON_RST_REQ) & (~AMAZON_RST_REQ_DFE); - mb(); -#endif - - return 0; -} - -/* Brief: Send a ATM EoP packet to save DMA channel - */ -int amazon_tpe_inject_debug_cell(void) -{ - //Send a ATM cell to save DMA channel - u8 qid; - unsigned char atm_cell[48]; - qid = 0x11; - AMAZON_TPE_DMSG("qid = %d\n",qid); - memset(atm_cell,0,48); - atm_cell[3] = 0x2; - if ( amazon_atm_swin(qid,atm_cell)) { - AMAZON_TPE_EMSG("cannot insert EoP cell\n"); - return -1; - } - return 0; -} - -/* Brief: start HTU (TPE) - */ - -int amazon_tpe_start(void) -{ - AMAZON_WRITE_REGISTER_L(HTU_CFG_START ,HTU_CFG_ADDR); - wmb(); - return 0; -} -#endif //AMAZON_TPE_AAL5_RECOVERY - -#ifdef AMAZON_CHECK_LINK -extern int (*adsl_link_notify)(int); -/* Brief: notify link status of ADSL link - * Parameters: 0 link down - * 1 link up - * Returns: 0 OK - * Details: called by MEI driver - * should update status and inform upper layer - */ -int amazon_tpe_link_notify(int status) -{ - adsl_link_status = status; - AMAZON_TPE_DMSG("link status %s\n",(status==1)?"Up":"Down"); - if (status == 0){ - //wait until no cells in upstream queues - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(2*HZ); - } - return 0; -} -#endif //ifdef AMAZON_CHECK_LINK - -/* - * Brief: Initialize ATM module - * - * Return Value: ENOMEM - No memory available - * EBUSY - Cannot register atm device - * ERESTARTSYS - Process interrupted by other signal - * 0 - OK, module initialized - * - * Description: - * This function registers an atm device for all UTOPIA devices. - * It also allocates memory for the private device data structures - */ -int __init amazon_atm_net_init(void) -{ - int i; - int err=0; - amazon_atm_dev_t *dev = NULL; - - if ((dev=amazon_atm_create()) != NULL){ - for(i=0;i<AMAZON_ATM_PORT_NUM;i++){ - if (!dev->ports[i].enable){ - amazon_atm_devs[i] = NULL; - continue; - } - amazon_atm_devs[i] =atm_dev_register("amazon_atm",&amazon_atm_ops,-1,0UL); - if (amazon_atm_devs[i] == NULL){ - AMAZON_TPE_EMSG("atm_dev_register fails\n"); - err = -EIO; - goto amazon_atm_net_init_exit; - }else{ - AMAZON_TPE_DMSG("registering device %u\n",i); - amazon_atm_devs[i]->ci_range.vpi_bits = 8; - amazon_atm_devs[i]->ci_range.vci_bits = 16; - amazon_atm_devs[i]->link_rate = dev->ports[i].tx_max_cr; - amazon_atm_devs[i]->dev_data = (void *) i; - } - } - - }else{ - err = -ENOMEM; - AMAZON_TPE_EMSG("cannot init atm device\n"); - goto amazon_atm_net_init_exit; - } -#ifdef AMAZON_TPE_AAL5_RECOVERY - tpe_reset = & amazon_tpe_reset; - tpe_start = & amazon_tpe_start; - tpe_inject = & amazon_tpe_inject_debug_cell; -#endif //AMAZON_TPE_AAL5_RECOVERY -#ifdef AMAZON_CHECK_LINK - adsl_link_notify=amazon_tpe_link_notify; -#endif //AMAZON_CHECK_LINK -amazon_atm_net_init_exit: - return err; -} - -void __exit amazon_atm_net_cleanup(void) -{ - int i; - amazon_atm_cleanup(); - for(i=0;i<AMAZON_ATM_PORT_NUM;i++){ - if (amazon_atm_devs[i] != NULL){ - AMAZON_TPE_DMSG("unregister dev %u\n",i); - atm_dev_deregister(amazon_atm_devs[i]); - } - } - return; -} -EXPORT_SYMBOL(get_oam_time_stamp); - -MODULE_LICENSE ("GPL"); -MODULE_AUTHOR("Infineon IFAP DC COM peng.liu@infineon.com"); -MODULE_DESCRIPTION("AMAZON ATM driver"); - -module_init(amazon_atm_net_init); -module_exit(amazon_atm_net_cleanup); - - - - - |