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![Arnd Bergmann](/assets/img/avatar_default.png)
The qla4_83xx_rd_reg_indirect() function can fail when it is unable to read a register, but not all callers check its return value before using the register data, and gcc correctly warns about this: qla4xxx/ql4_83xx.c: In function 'qla4_83xx_process_reset_template': qla4xxx/ql4_83xx.c:1073:36: warning: 'value' may be used uninitialized in this function ha->reset_tmplt.array[index++] = value; ^ qla4xxx/ql4_83xx.c:1050:11: note: 'value' was declared here uint32_t value; ^ qla4xxx/ql4_83xx.c:902:8: warning: 'value' may be used uninitialized in this function value &= p_rmw_hdr->test_mask; ^ qla4xxx/ql4_83xx.c:895:11: note: 'value' was declared here uint32_t value; ^ In file included from ../include/linux/io.h:25:0, from ../include/linux/pci.h:31, from ../drivers/scsi/qla4xxx/ql4_def.h:16, from ../drivers/scsi/qla4xxx/ql4_83xx.c:10: asm/io.h:101:2: warning: 'value' may be used uninitialized in this function asm volatile("str %1, %0" ^ qla4xxx/ql4_83xx.c:874:11: note: 'value' was declared here uint32_t value; ^ Unfortunately, I don't see any helpful way to add proper error handling for this case, and the failure scenario for rd_reg seems rather obscure, so this bails out and makes the rd_reg accessor set the result to 0xffffffff so we at least get a predictable value. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1596 lines
44 KiB
C
1596 lines
44 KiB
C
/*
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* QLogic iSCSI HBA Driver
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* Copyright (c) 2003-2013 QLogic Corporation
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*
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* See LICENSE.qla4xxx for copyright and licensing details.
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*/
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#include <linux/ratelimit.h>
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#include "ql4_def.h"
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#include "ql4_version.h"
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#include "ql4_glbl.h"
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#include "ql4_dbg.h"
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#include "ql4_inline.h"
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uint32_t qla4_83xx_rd_reg(struct scsi_qla_host *ha, ulong addr)
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{
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return readl((void __iomem *)(ha->nx_pcibase + addr));
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}
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void qla4_83xx_wr_reg(struct scsi_qla_host *ha, ulong addr, uint32_t val)
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{
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writel(val, (void __iomem *)(ha->nx_pcibase + addr));
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}
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static int qla4_83xx_set_win_base(struct scsi_qla_host *ha, uint32_t addr)
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{
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uint32_t val;
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int ret_val = QLA_SUCCESS;
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qla4_83xx_wr_reg(ha, QLA83XX_CRB_WIN_FUNC(ha->func_num), addr);
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val = qla4_83xx_rd_reg(ha, QLA83XX_CRB_WIN_FUNC(ha->func_num));
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if (val != addr) {
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ql4_printk(KERN_ERR, ha, "%s: Failed to set register window : addr written 0x%x, read 0x%x!\n",
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__func__, addr, val);
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ret_val = QLA_ERROR;
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}
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return ret_val;
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}
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int qla4_83xx_rd_reg_indirect(struct scsi_qla_host *ha, uint32_t addr,
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uint32_t *data)
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{
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int ret_val;
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ret_val = qla4_83xx_set_win_base(ha, addr);
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if (ret_val == QLA_SUCCESS) {
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*data = qla4_83xx_rd_reg(ha, QLA83XX_WILDCARD);
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} else {
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*data = 0xffffffff;
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ql4_printk(KERN_ERR, ha, "%s: failed read of addr 0x%x!\n",
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__func__, addr);
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}
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return ret_val;
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}
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int qla4_83xx_wr_reg_indirect(struct scsi_qla_host *ha, uint32_t addr,
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uint32_t data)
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{
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int ret_val;
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ret_val = qla4_83xx_set_win_base(ha, addr);
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if (ret_val == QLA_SUCCESS)
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qla4_83xx_wr_reg(ha, QLA83XX_WILDCARD, data);
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else
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ql4_printk(KERN_ERR, ha, "%s: failed wrt to addr 0x%x, data 0x%x\n",
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__func__, addr, data);
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return ret_val;
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}
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static int qla4_83xx_flash_lock(struct scsi_qla_host *ha)
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{
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int lock_owner;
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int timeout = 0;
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uint32_t lock_status = 0;
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int ret_val = QLA_SUCCESS;
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while (lock_status == 0) {
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lock_status = qla4_83xx_rd_reg(ha, QLA83XX_FLASH_LOCK);
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if (lock_status)
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break;
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if (++timeout >= QLA83XX_FLASH_LOCK_TIMEOUT / 20) {
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lock_owner = qla4_83xx_rd_reg(ha,
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QLA83XX_FLASH_LOCK_ID);
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ql4_printk(KERN_ERR, ha, "%s: flash lock by func %d failed, held by func %d\n",
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__func__, ha->func_num, lock_owner);
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ret_val = QLA_ERROR;
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break;
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}
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msleep(20);
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}
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qla4_83xx_wr_reg(ha, QLA83XX_FLASH_LOCK_ID, ha->func_num);
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return ret_val;
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}
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static void qla4_83xx_flash_unlock(struct scsi_qla_host *ha)
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{
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/* Reading FLASH_UNLOCK register unlocks the Flash */
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qla4_83xx_wr_reg(ha, QLA83XX_FLASH_LOCK_ID, 0xFF);
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qla4_83xx_rd_reg(ha, QLA83XX_FLASH_UNLOCK);
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}
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int qla4_83xx_flash_read_u32(struct scsi_qla_host *ha, uint32_t flash_addr,
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uint8_t *p_data, int u32_word_count)
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{
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int i;
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uint32_t u32_word;
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uint32_t addr = flash_addr;
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int ret_val = QLA_SUCCESS;
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ret_val = qla4_83xx_flash_lock(ha);
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if (ret_val == QLA_ERROR)
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goto exit_lock_error;
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if (addr & 0x03) {
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ql4_printk(KERN_ERR, ha, "%s: Illegal addr = 0x%x\n",
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__func__, addr);
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ret_val = QLA_ERROR;
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goto exit_flash_read;
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}
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for (i = 0; i < u32_word_count; i++) {
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ret_val = qla4_83xx_wr_reg_indirect(ha,
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QLA83XX_FLASH_DIRECT_WINDOW,
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(addr & 0xFFFF0000));
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if (ret_val == QLA_ERROR) {
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ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW\n!",
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__func__, addr);
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goto exit_flash_read;
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}
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ret_val = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_FLASH_DIRECT_DATA(addr),
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&u32_word);
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if (ret_val == QLA_ERROR) {
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ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
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__func__, addr);
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goto exit_flash_read;
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}
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*(__le32 *)p_data = le32_to_cpu(u32_word);
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p_data = p_data + 4;
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addr = addr + 4;
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}
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exit_flash_read:
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qla4_83xx_flash_unlock(ha);
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exit_lock_error:
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return ret_val;
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}
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int qla4_83xx_lockless_flash_read_u32(struct scsi_qla_host *ha,
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uint32_t flash_addr, uint8_t *p_data,
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int u32_word_count)
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{
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uint32_t i;
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uint32_t u32_word;
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uint32_t flash_offset;
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uint32_t addr = flash_addr;
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int ret_val = QLA_SUCCESS;
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flash_offset = addr & (QLA83XX_FLASH_SECTOR_SIZE - 1);
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if (addr & 0x3) {
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ql4_printk(KERN_ERR, ha, "%s: Illegal addr = 0x%x\n",
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__func__, addr);
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ret_val = QLA_ERROR;
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goto exit_lockless_read;
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}
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ret_val = qla4_83xx_wr_reg_indirect(ha, QLA83XX_FLASH_DIRECT_WINDOW,
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addr);
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if (ret_val == QLA_ERROR) {
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ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW!\n",
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__func__, addr);
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goto exit_lockless_read;
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}
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/* Check if data is spread across multiple sectors */
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if ((flash_offset + (u32_word_count * sizeof(uint32_t))) >
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(QLA83XX_FLASH_SECTOR_SIZE - 1)) {
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/* Multi sector read */
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for (i = 0; i < u32_word_count; i++) {
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ret_val = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_FLASH_DIRECT_DATA(addr),
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&u32_word);
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if (ret_val == QLA_ERROR) {
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ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
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__func__, addr);
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goto exit_lockless_read;
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}
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*(__le32 *)p_data = le32_to_cpu(u32_word);
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p_data = p_data + 4;
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addr = addr + 4;
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flash_offset = flash_offset + 4;
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if (flash_offset > (QLA83XX_FLASH_SECTOR_SIZE - 1)) {
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/* This write is needed once for each sector */
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ret_val = qla4_83xx_wr_reg_indirect(ha,
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QLA83XX_FLASH_DIRECT_WINDOW,
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addr);
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if (ret_val == QLA_ERROR) {
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ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW!\n",
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__func__, addr);
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goto exit_lockless_read;
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}
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flash_offset = 0;
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}
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}
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} else {
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/* Single sector read */
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for (i = 0; i < u32_word_count; i++) {
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ret_val = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_FLASH_DIRECT_DATA(addr),
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&u32_word);
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if (ret_val == QLA_ERROR) {
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ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
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__func__, addr);
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goto exit_lockless_read;
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}
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*(__le32 *)p_data = le32_to_cpu(u32_word);
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p_data = p_data + 4;
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addr = addr + 4;
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}
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}
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exit_lockless_read:
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return ret_val;
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}
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void qla4_83xx_rom_lock_recovery(struct scsi_qla_host *ha)
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{
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if (qla4_83xx_flash_lock(ha))
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ql4_printk(KERN_INFO, ha, "%s: Resetting rom lock\n", __func__);
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/*
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* We got the lock, or someone else is holding the lock
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* since we are restting, forcefully unlock
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*/
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qla4_83xx_flash_unlock(ha);
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}
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#define INTENT_TO_RECOVER 0x01
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#define PROCEED_TO_RECOVER 0x02
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static int qla4_83xx_lock_recovery(struct scsi_qla_host *ha)
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{
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uint32_t lock = 0, lockid;
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int ret_val = QLA_ERROR;
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lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
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/* Check for other Recovery in progress, go wait */
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if ((lockid & 0x3) != 0)
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goto exit_lock_recovery;
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/* Intent to Recover */
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ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
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(ha->func_num << 2) | INTENT_TO_RECOVER);
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msleep(200);
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/* Check Intent to Recover is advertised */
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lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
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if ((lockid & 0x3C) != (ha->func_num << 2))
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goto exit_lock_recovery;
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ql4_printk(KERN_INFO, ha, "%s: IDC Lock recovery initiated for func %d\n",
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__func__, ha->func_num);
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/* Proceed to Recover */
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ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
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(ha->func_num << 2) | PROCEED_TO_RECOVER);
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/* Force Unlock */
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ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, 0xFF);
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ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_UNLOCK);
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/* Clear bits 0-5 in IDC_RECOVERY register*/
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ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY, 0);
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/* Get lock */
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lock = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK);
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if (lock) {
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lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK_ID);
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lockid = ((lockid + (1 << 8)) & ~0xFF) | ha->func_num;
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ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, lockid);
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ret_val = QLA_SUCCESS;
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}
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exit_lock_recovery:
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return ret_val;
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}
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#define QLA83XX_DRV_LOCK_MSLEEP 200
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int qla4_83xx_drv_lock(struct scsi_qla_host *ha)
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{
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int timeout = 0;
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uint32_t status = 0;
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int ret_val = QLA_SUCCESS;
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uint32_t first_owner = 0;
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uint32_t tmo_owner = 0;
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uint32_t lock_id;
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uint32_t func_num;
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uint32_t lock_cnt;
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while (status == 0) {
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status = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK);
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if (status) {
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/* Increment Counter (8-31) and update func_num (0-7) on
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* getting a successful lock */
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lock_id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
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lock_id = ((lock_id + (1 << 8)) & ~0xFF) | ha->func_num;
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qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, lock_id);
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break;
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}
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if (timeout == 0)
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/* Save counter + ID of function holding the lock for
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* first failure */
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first_owner = ha->isp_ops->rd_reg_direct(ha,
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QLA83XX_DRV_LOCK_ID);
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if (++timeout >=
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(QLA83XX_DRV_LOCK_TIMEOUT / QLA83XX_DRV_LOCK_MSLEEP)) {
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tmo_owner = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
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func_num = tmo_owner & 0xFF;
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lock_cnt = tmo_owner >> 8;
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ql4_printk(KERN_INFO, ha, "%s: Lock by func %d failed after 2s, lock held by func %d, lock count %d, first_owner %d\n",
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__func__, ha->func_num, func_num, lock_cnt,
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(first_owner & 0xFF));
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if (first_owner != tmo_owner) {
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/* Some other driver got lock, OR same driver
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* got lock again (counter value changed), when
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* we were waiting for lock.
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* Retry for another 2 sec */
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ql4_printk(KERN_INFO, ha, "%s: IDC lock failed for func %d\n",
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__func__, ha->func_num);
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timeout = 0;
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} else {
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/* Same driver holding lock > 2sec.
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* Force Recovery */
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ret_val = qla4_83xx_lock_recovery(ha);
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if (ret_val == QLA_SUCCESS) {
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/* Recovered and got lock */
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ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d successful\n",
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__func__, ha->func_num);
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break;
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}
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/* Recovery Failed, some other function
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* has the lock, wait for 2secs and retry */
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ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d failed, Retrying timeout\n",
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__func__, ha->func_num);
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timeout = 0;
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}
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}
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msleep(QLA83XX_DRV_LOCK_MSLEEP);
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}
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return ret_val;
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}
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void qla4_83xx_drv_unlock(struct scsi_qla_host *ha)
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{
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int id;
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id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
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if ((id & 0xFF) != ha->func_num) {
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ql4_printk(KERN_ERR, ha, "%s: IDC Unlock by %d failed, lock owner is %d\n",
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__func__, ha->func_num, (id & 0xFF));
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return;
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}
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/* Keep lock counter value, update the ha->func_num to 0xFF */
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qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, (id | 0xFF));
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qla4_83xx_rd_reg(ha, QLA83XX_DRV_UNLOCK);
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}
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void qla4_83xx_set_idc_dontreset(struct scsi_qla_host *ha)
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{
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uint32_t idc_ctrl;
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idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
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idc_ctrl |= DONTRESET_BIT0;
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qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
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DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
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idc_ctrl));
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}
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void qla4_83xx_clear_idc_dontreset(struct scsi_qla_host *ha)
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{
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uint32_t idc_ctrl;
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idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
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idc_ctrl &= ~DONTRESET_BIT0;
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qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
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DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
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idc_ctrl));
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}
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int qla4_83xx_idc_dontreset(struct scsi_qla_host *ha)
|
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{
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uint32_t idc_ctrl;
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idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
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return idc_ctrl & DONTRESET_BIT0;
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}
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|
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/*-------------------------IDC State Machine ---------------------*/
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|
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enum {
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UNKNOWN_CLASS = 0,
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NIC_CLASS,
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FCOE_CLASS,
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ISCSI_CLASS
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};
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|
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struct device_info {
|
|
int func_num;
|
|
int device_type;
|
|
int port_num;
|
|
};
|
|
|
|
int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t drv_active;
|
|
uint32_t dev_part, dev_part1, dev_part2;
|
|
int i;
|
|
struct device_info device_map[16];
|
|
int func_nibble;
|
|
int nibble;
|
|
int nic_present = 0;
|
|
int iscsi_present = 0;
|
|
int iscsi_func_low = 0;
|
|
|
|
/* Use the dev_partition register to determine the PCI function number
|
|
* and then check drv_active register to see which driver is loaded */
|
|
dev_part1 = qla4_83xx_rd_reg(ha,
|
|
ha->reg_tbl[QLA8XXX_CRB_DEV_PART_INFO]);
|
|
dev_part2 = qla4_83xx_rd_reg(ha, QLA83XX_CRB_DEV_PART_INFO2);
|
|
drv_active = qla4_83xx_rd_reg(ha, ha->reg_tbl[QLA8XXX_CRB_DRV_ACTIVE]);
|
|
|
|
/* Each function has 4 bits in dev_partition Info register,
|
|
* Lower 2 bits - device type, Upper 2 bits - physical port number */
|
|
dev_part = dev_part1;
|
|
for (i = nibble = 0; i <= 15; i++, nibble++) {
|
|
func_nibble = dev_part & (0xF << (nibble * 4));
|
|
func_nibble >>= (nibble * 4);
|
|
device_map[i].func_num = i;
|
|
device_map[i].device_type = func_nibble & 0x3;
|
|
device_map[i].port_num = func_nibble & 0xC;
|
|
|
|
if (device_map[i].device_type == NIC_CLASS) {
|
|
if (drv_active & (1 << device_map[i].func_num)) {
|
|
nic_present++;
|
|
break;
|
|
}
|
|
} else if (device_map[i].device_type == ISCSI_CLASS) {
|
|
if (drv_active & (1 << device_map[i].func_num)) {
|
|
if (!iscsi_present ||
|
|
(iscsi_present &&
|
|
(iscsi_func_low > device_map[i].func_num)))
|
|
iscsi_func_low = device_map[i].func_num;
|
|
|
|
iscsi_present++;
|
|
}
|
|
}
|
|
|
|
/* For function_num[8..15] get info from dev_part2 register */
|
|
if (nibble == 7) {
|
|
nibble = 0;
|
|
dev_part = dev_part2;
|
|
}
|
|
}
|
|
|
|
/* NIC, iSCSI and FCOE are the Reset owners based on order, NIC gets
|
|
* precedence over iSCSI and FCOE and iSCSI over FCOE, based on drivers
|
|
* present. */
|
|
if (!nic_present && (ha->func_num == iscsi_func_low)) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: can reset - NIC not present and lower iSCSI function is %d\n",
|
|
__func__, ha->func_num));
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* qla4_83xx_need_reset_handler - Code to start reset sequence
|
|
* @ha: pointer to adapter structure
|
|
*
|
|
* Note: IDC lock must be held upon entry
|
|
**/
|
|
void qla4_83xx_need_reset_handler(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t dev_state, drv_state, drv_active;
|
|
unsigned long reset_timeout, dev_init_timeout;
|
|
|
|
ql4_printk(KERN_INFO, ha, "%s: Performing ISP error recovery\n",
|
|
__func__);
|
|
|
|
if (!test_bit(AF_8XXX_RST_OWNER, &ha->flags)) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: reset acknowledged\n",
|
|
__func__));
|
|
qla4_8xxx_set_rst_ready(ha);
|
|
|
|
/* Non-reset owners ACK Reset and wait for device INIT state
|
|
* as part of Reset Recovery by Reset Owner */
|
|
dev_init_timeout = jiffies + (ha->nx_dev_init_timeout * HZ);
|
|
|
|
do {
|
|
if (time_after_eq(jiffies, dev_init_timeout)) {
|
|
ql4_printk(KERN_INFO, ha, "%s: Non Reset owner dev init timeout\n",
|
|
__func__);
|
|
break;
|
|
}
|
|
|
|
ha->isp_ops->idc_unlock(ha);
|
|
msleep(1000);
|
|
ha->isp_ops->idc_lock(ha);
|
|
|
|
dev_state = qla4_8xxx_rd_direct(ha,
|
|
QLA8XXX_CRB_DEV_STATE);
|
|
} while (dev_state == QLA8XXX_DEV_NEED_RESET);
|
|
} else {
|
|
qla4_8xxx_set_rst_ready(ha);
|
|
reset_timeout = jiffies + (ha->nx_reset_timeout * HZ);
|
|
drv_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_STATE);
|
|
drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
|
|
|
|
ql4_printk(KERN_INFO, ha, "%s: drv_state = 0x%x, drv_active = 0x%x\n",
|
|
__func__, drv_state, drv_active);
|
|
|
|
while (drv_state != drv_active) {
|
|
if (time_after_eq(jiffies, reset_timeout)) {
|
|
ql4_printk(KERN_INFO, ha, "%s: %s: RESET TIMEOUT! drv_state: 0x%08x, drv_active: 0x%08x\n",
|
|
__func__, DRIVER_NAME, drv_state,
|
|
drv_active);
|
|
break;
|
|
}
|
|
|
|
ha->isp_ops->idc_unlock(ha);
|
|
msleep(1000);
|
|
ha->isp_ops->idc_lock(ha);
|
|
|
|
drv_state = qla4_8xxx_rd_direct(ha,
|
|
QLA8XXX_CRB_DRV_STATE);
|
|
drv_active = qla4_8xxx_rd_direct(ha,
|
|
QLA8XXX_CRB_DRV_ACTIVE);
|
|
}
|
|
|
|
if (drv_state != drv_active) {
|
|
ql4_printk(KERN_INFO, ha, "%s: Reset_owner turning off drv_active of non-acking function 0x%x\n",
|
|
__func__, (drv_active ^ drv_state));
|
|
drv_active = drv_active & drv_state;
|
|
qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_ACTIVE,
|
|
drv_active);
|
|
}
|
|
|
|
clear_bit(AF_8XXX_RST_OWNER, &ha->flags);
|
|
/* Start Reset Recovery */
|
|
qla4_8xxx_device_bootstrap(ha);
|
|
}
|
|
}
|
|
|
|
void qla4_83xx_get_idc_param(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t idc_params, ret_val;
|
|
|
|
ret_val = qla4_83xx_flash_read_u32(ha, QLA83XX_IDC_PARAM_ADDR,
|
|
(uint8_t *)&idc_params, 1);
|
|
if (ret_val == QLA_SUCCESS) {
|
|
ha->nx_dev_init_timeout = idc_params & 0xFFFF;
|
|
ha->nx_reset_timeout = (idc_params >> 16) & 0xFFFF;
|
|
} else {
|
|
ha->nx_dev_init_timeout = ROM_DEV_INIT_TIMEOUT;
|
|
ha->nx_reset_timeout = ROM_DRV_RESET_ACK_TIMEOUT;
|
|
}
|
|
|
|
DEBUG2(ql4_printk(KERN_DEBUG, ha,
|
|
"%s: ha->nx_dev_init_timeout = %d, ha->nx_reset_timeout = %d\n",
|
|
__func__, ha->nx_dev_init_timeout,
|
|
ha->nx_reset_timeout));
|
|
}
|
|
|
|
/*-------------------------Reset Sequence Functions-----------------------*/
|
|
|
|
static void qla4_83xx_dump_reset_seq_hdr(struct scsi_qla_host *ha)
|
|
{
|
|
uint8_t *phdr;
|
|
|
|
if (!ha->reset_tmplt.buff) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Error: Invalid reset_seq_template\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
|
|
phdr = ha->reset_tmplt.buff;
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"Reset Template: 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X\n",
|
|
*phdr, *(phdr+1), *(phdr+2), *(phdr+3), *(phdr+4),
|
|
*(phdr+5), *(phdr+6), *(phdr+7), *(phdr + 8),
|
|
*(phdr+9), *(phdr+10), *(phdr+11), *(phdr+12),
|
|
*(phdr+13), *(phdr+14), *(phdr+15)));
|
|
}
|
|
|
|
static int qla4_83xx_copy_bootloader(struct scsi_qla_host *ha)
|
|
{
|
|
uint8_t *p_cache;
|
|
uint32_t src, count, size;
|
|
uint64_t dest;
|
|
int ret_val = QLA_SUCCESS;
|
|
|
|
src = QLA83XX_BOOTLOADER_FLASH_ADDR;
|
|
dest = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_ADDR);
|
|
size = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_SIZE);
|
|
|
|
/* 128 bit alignment check */
|
|
if (size & 0xF)
|
|
size = (size + 16) & ~0xF;
|
|
|
|
/* 16 byte count */
|
|
count = size/16;
|
|
|
|
p_cache = vmalloc(size);
|
|
if (p_cache == NULL) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Failed to allocate memory for boot loader cache\n",
|
|
__func__);
|
|
ret_val = QLA_ERROR;
|
|
goto exit_copy_bootloader;
|
|
}
|
|
|
|
ret_val = qla4_83xx_lockless_flash_read_u32(ha, src, p_cache,
|
|
size / sizeof(uint32_t));
|
|
if (ret_val == QLA_ERROR) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Error reading firmware from flash\n",
|
|
__func__);
|
|
goto exit_copy_error;
|
|
}
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Read firmware from flash\n",
|
|
__func__));
|
|
|
|
/* 128 bit/16 byte write to MS memory */
|
|
ret_val = qla4_8xxx_ms_mem_write_128b(ha, dest, (uint32_t *)p_cache,
|
|
count);
|
|
if (ret_val == QLA_ERROR) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Error writing firmware to MS\n",
|
|
__func__);
|
|
goto exit_copy_error;
|
|
}
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Wrote firmware size %d to MS\n",
|
|
__func__, size));
|
|
|
|
exit_copy_error:
|
|
vfree(p_cache);
|
|
|
|
exit_copy_bootloader:
|
|
return ret_val;
|
|
}
|
|
|
|
static int qla4_83xx_check_cmd_peg_status(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t val, ret_val = QLA_ERROR;
|
|
int retries = CRB_CMDPEG_CHECK_RETRY_COUNT;
|
|
|
|
do {
|
|
val = qla4_83xx_rd_reg(ha, QLA83XX_CMDPEG_STATE);
|
|
if (val == PHAN_INITIALIZE_COMPLETE) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Command Peg initialization complete. State=0x%x\n",
|
|
__func__, val));
|
|
ret_val = QLA_SUCCESS;
|
|
break;
|
|
}
|
|
msleep(CRB_CMDPEG_CHECK_DELAY);
|
|
} while (--retries);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* qla4_83xx_poll_reg - Poll the given CRB addr for duration msecs till
|
|
* value read ANDed with test_mask is equal to test_result.
|
|
*
|
|
* @ha : Pointer to adapter structure
|
|
* @addr : CRB register address
|
|
* @duration : Poll for total of "duration" msecs
|
|
* @test_mask : Mask value read with "test_mask"
|
|
* @test_result : Compare (value&test_mask) with test_result.
|
|
**/
|
|
static int qla4_83xx_poll_reg(struct scsi_qla_host *ha, uint32_t addr,
|
|
int duration, uint32_t test_mask,
|
|
uint32_t test_result)
|
|
{
|
|
uint32_t value;
|
|
uint8_t retries;
|
|
int ret_val = QLA_SUCCESS;
|
|
|
|
ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
|
|
if (ret_val == QLA_ERROR)
|
|
goto exit_poll_reg;
|
|
|
|
retries = duration / 10;
|
|
do {
|
|
if ((value & test_mask) != test_result) {
|
|
msleep(duration / 10);
|
|
ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
|
|
if (ret_val == QLA_ERROR)
|
|
goto exit_poll_reg;
|
|
|
|
ret_val = QLA_ERROR;
|
|
} else {
|
|
ret_val = QLA_SUCCESS;
|
|
break;
|
|
}
|
|
} while (retries--);
|
|
|
|
exit_poll_reg:
|
|
if (ret_val == QLA_ERROR) {
|
|
ha->reset_tmplt.seq_error++;
|
|
ql4_printk(KERN_ERR, ha, "%s: Poll Failed: 0x%08x 0x%08x 0x%08x\n",
|
|
__func__, value, test_mask, test_result);
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
static int qla4_83xx_reset_seq_checksum_test(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t sum = 0;
|
|
uint16_t *buff = (uint16_t *)ha->reset_tmplt.buff;
|
|
int u16_count = ha->reset_tmplt.hdr->size / sizeof(uint16_t);
|
|
int ret_val;
|
|
|
|
while (u16_count-- > 0)
|
|
sum += *buff++;
|
|
|
|
while (sum >> 16)
|
|
sum = (sum & 0xFFFF) + (sum >> 16);
|
|
|
|
/* checksum of 0 indicates a valid template */
|
|
if (~sum) {
|
|
ret_val = QLA_SUCCESS;
|
|
} else {
|
|
ql4_printk(KERN_ERR, ha, "%s: Reset seq checksum failed\n",
|
|
__func__);
|
|
ret_val = QLA_ERROR;
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* qla4_83xx_read_reset_template - Read Reset Template from Flash
|
|
* @ha: Pointer to adapter structure
|
|
**/
|
|
void qla4_83xx_read_reset_template(struct scsi_qla_host *ha)
|
|
{
|
|
uint8_t *p_buff;
|
|
uint32_t addr, tmplt_hdr_def_size, tmplt_hdr_size;
|
|
uint32_t ret_val;
|
|
|
|
ha->reset_tmplt.seq_error = 0;
|
|
ha->reset_tmplt.buff = vmalloc(QLA83XX_RESTART_TEMPLATE_SIZE);
|
|
if (ha->reset_tmplt.buff == NULL) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Failed to allocate reset template resources\n",
|
|
__func__);
|
|
goto exit_read_reset_template;
|
|
}
|
|
|
|
p_buff = ha->reset_tmplt.buff;
|
|
addr = QLA83XX_RESET_TEMPLATE_ADDR;
|
|
|
|
tmplt_hdr_def_size = sizeof(struct qla4_83xx_reset_template_hdr) /
|
|
sizeof(uint32_t);
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Read template hdr size %d from Flash\n",
|
|
__func__, tmplt_hdr_def_size));
|
|
|
|
/* Copy template header from flash */
|
|
ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
|
|
tmplt_hdr_def_size);
|
|
if (ret_val != QLA_SUCCESS) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Failed to read reset template\n",
|
|
__func__);
|
|
goto exit_read_template_error;
|
|
}
|
|
|
|
ha->reset_tmplt.hdr =
|
|
(struct qla4_83xx_reset_template_hdr *)ha->reset_tmplt.buff;
|
|
|
|
/* Validate the template header size and signature */
|
|
tmplt_hdr_size = ha->reset_tmplt.hdr->hdr_size/sizeof(uint32_t);
|
|
if ((tmplt_hdr_size != tmplt_hdr_def_size) ||
|
|
(ha->reset_tmplt.hdr->signature != RESET_TMPLT_HDR_SIGNATURE)) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Template Header size %d is invalid, tmplt_hdr_def_size %d\n",
|
|
__func__, tmplt_hdr_size, tmplt_hdr_def_size);
|
|
goto exit_read_template_error;
|
|
}
|
|
|
|
addr = QLA83XX_RESET_TEMPLATE_ADDR + ha->reset_tmplt.hdr->hdr_size;
|
|
p_buff = ha->reset_tmplt.buff + ha->reset_tmplt.hdr->hdr_size;
|
|
tmplt_hdr_def_size = (ha->reset_tmplt.hdr->size -
|
|
ha->reset_tmplt.hdr->hdr_size) / sizeof(uint32_t);
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Read rest of the template size %d\n",
|
|
__func__, ha->reset_tmplt.hdr->size));
|
|
|
|
/* Copy rest of the template */
|
|
ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
|
|
tmplt_hdr_def_size);
|
|
if (ret_val != QLA_SUCCESS) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Failed to read reset template\n",
|
|
__func__);
|
|
goto exit_read_template_error;
|
|
}
|
|
|
|
/* Integrity check */
|
|
if (qla4_83xx_reset_seq_checksum_test(ha)) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Reset Seq checksum failed!\n",
|
|
__func__);
|
|
goto exit_read_template_error;
|
|
}
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Reset Seq checksum passed, Get stop, start and init seq offsets\n",
|
|
__func__));
|
|
|
|
/* Get STOP, START, INIT sequence offsets */
|
|
ha->reset_tmplt.init_offset = ha->reset_tmplt.buff +
|
|
ha->reset_tmplt.hdr->init_seq_offset;
|
|
ha->reset_tmplt.start_offset = ha->reset_tmplt.buff +
|
|
ha->reset_tmplt.hdr->start_seq_offset;
|
|
ha->reset_tmplt.stop_offset = ha->reset_tmplt.buff +
|
|
ha->reset_tmplt.hdr->hdr_size;
|
|
qla4_83xx_dump_reset_seq_hdr(ha);
|
|
|
|
goto exit_read_reset_template;
|
|
|
|
exit_read_template_error:
|
|
vfree(ha->reset_tmplt.buff);
|
|
|
|
exit_read_reset_template:
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* qla4_83xx_read_write_crb_reg - Read from raddr and write value to waddr.
|
|
*
|
|
* @ha : Pointer to adapter structure
|
|
* @raddr : CRB address to read from
|
|
* @waddr : CRB address to write to
|
|
**/
|
|
static void qla4_83xx_read_write_crb_reg(struct scsi_qla_host *ha,
|
|
uint32_t raddr, uint32_t waddr)
|
|
{
|
|
uint32_t value;
|
|
|
|
qla4_83xx_rd_reg_indirect(ha, raddr, &value);
|
|
qla4_83xx_wr_reg_indirect(ha, waddr, value);
|
|
}
|
|
|
|
/**
|
|
* qla4_83xx_rmw_crb_reg - Read Modify Write crb register
|
|
*
|
|
* This function read value from raddr, AND with test_mask,
|
|
* Shift Left,Right/OR/XOR with values RMW header and write value to waddr.
|
|
*
|
|
* @ha : Pointer to adapter structure
|
|
* @raddr : CRB address to read from
|
|
* @waddr : CRB address to write to
|
|
* @p_rmw_hdr : header with shift/or/xor values.
|
|
**/
|
|
static void qla4_83xx_rmw_crb_reg(struct scsi_qla_host *ha, uint32_t raddr,
|
|
uint32_t waddr,
|
|
struct qla4_83xx_rmw *p_rmw_hdr)
|
|
{
|
|
uint32_t value;
|
|
|
|
if (p_rmw_hdr->index_a)
|
|
value = ha->reset_tmplt.array[p_rmw_hdr->index_a];
|
|
else
|
|
qla4_83xx_rd_reg_indirect(ha, raddr, &value);
|
|
|
|
value &= p_rmw_hdr->test_mask;
|
|
value <<= p_rmw_hdr->shl;
|
|
value >>= p_rmw_hdr->shr;
|
|
value |= p_rmw_hdr->or_value;
|
|
value ^= p_rmw_hdr->xor_value;
|
|
|
|
qla4_83xx_wr_reg_indirect(ha, waddr, value);
|
|
|
|
return;
|
|
}
|
|
|
|
static void qla4_83xx_write_list(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
struct qla4_83xx_entry *p_entry;
|
|
uint32_t i;
|
|
|
|
p_entry = (struct qla4_83xx_entry *)
|
|
((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
|
|
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
qla4_83xx_wr_reg_indirect(ha, p_entry->arg1, p_entry->arg2);
|
|
if (p_hdr->delay)
|
|
udelay((uint32_t)(p_hdr->delay));
|
|
}
|
|
}
|
|
|
|
static void qla4_83xx_read_write_list(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
struct qla4_83xx_entry *p_entry;
|
|
uint32_t i;
|
|
|
|
p_entry = (struct qla4_83xx_entry *)
|
|
((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
|
|
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
qla4_83xx_read_write_crb_reg(ha, p_entry->arg1, p_entry->arg2);
|
|
if (p_hdr->delay)
|
|
udelay((uint32_t)(p_hdr->delay));
|
|
}
|
|
}
|
|
|
|
static void qla4_83xx_poll_list(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
long delay;
|
|
struct qla4_83xx_entry *p_entry;
|
|
struct qla4_83xx_poll *p_poll;
|
|
uint32_t i;
|
|
uint32_t value;
|
|
|
|
p_poll = (struct qla4_83xx_poll *)
|
|
((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
|
|
|
|
/* Entries start after 8 byte qla4_83xx_poll, poll header contains
|
|
* the test_mask, test_value. */
|
|
p_entry = (struct qla4_83xx_entry *)((char *)p_poll +
|
|
sizeof(struct qla4_83xx_poll));
|
|
|
|
delay = (long)p_hdr->delay;
|
|
if (!delay) {
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
|
|
p_poll->test_mask,
|
|
p_poll->test_value);
|
|
}
|
|
} else {
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
if (qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
|
|
p_poll->test_mask,
|
|
p_poll->test_value)) {
|
|
qla4_83xx_rd_reg_indirect(ha, p_entry->arg1,
|
|
&value);
|
|
qla4_83xx_rd_reg_indirect(ha, p_entry->arg2,
|
|
&value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qla4_83xx_poll_write_list(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
long delay;
|
|
struct qla4_83xx_quad_entry *p_entry;
|
|
struct qla4_83xx_poll *p_poll;
|
|
uint32_t i;
|
|
|
|
p_poll = (struct qla4_83xx_poll *)
|
|
((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
|
|
p_entry = (struct qla4_83xx_quad_entry *)
|
|
((char *)p_poll + sizeof(struct qla4_83xx_poll));
|
|
delay = (long)p_hdr->delay;
|
|
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
qla4_83xx_wr_reg_indirect(ha, p_entry->dr_addr,
|
|
p_entry->dr_value);
|
|
qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
|
|
p_entry->ar_value);
|
|
if (delay) {
|
|
if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
|
|
p_poll->test_mask,
|
|
p_poll->test_value)) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Timeout Error: poll list, item_num %d, entry_num %d\n",
|
|
__func__, i,
|
|
ha->reset_tmplt.seq_index));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qla4_83xx_read_modify_write(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
struct qla4_83xx_entry *p_entry;
|
|
struct qla4_83xx_rmw *p_rmw_hdr;
|
|
uint32_t i;
|
|
|
|
p_rmw_hdr = (struct qla4_83xx_rmw *)
|
|
((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
|
|
p_entry = (struct qla4_83xx_entry *)
|
|
((char *)p_rmw_hdr + sizeof(struct qla4_83xx_rmw));
|
|
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
qla4_83xx_rmw_crb_reg(ha, p_entry->arg1, p_entry->arg2,
|
|
p_rmw_hdr);
|
|
if (p_hdr->delay)
|
|
udelay((uint32_t)(p_hdr->delay));
|
|
}
|
|
}
|
|
|
|
static void qla4_83xx_pause(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
if (p_hdr->delay)
|
|
mdelay((uint32_t)((long)p_hdr->delay));
|
|
}
|
|
|
|
static void qla4_83xx_poll_read_list(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
long delay;
|
|
int index;
|
|
struct qla4_83xx_quad_entry *p_entry;
|
|
struct qla4_83xx_poll *p_poll;
|
|
uint32_t i;
|
|
uint32_t value;
|
|
|
|
p_poll = (struct qla4_83xx_poll *)
|
|
((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
|
|
p_entry = (struct qla4_83xx_quad_entry *)
|
|
((char *)p_poll + sizeof(struct qla4_83xx_poll));
|
|
delay = (long)p_hdr->delay;
|
|
|
|
for (i = 0; i < p_hdr->count; i++, p_entry++) {
|
|
qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
|
|
p_entry->ar_value);
|
|
if (delay) {
|
|
if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
|
|
p_poll->test_mask,
|
|
p_poll->test_value)) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Timeout Error: poll list, Item_num %d, entry_num %d\n",
|
|
__func__, i,
|
|
ha->reset_tmplt.seq_index));
|
|
} else {
|
|
index = ha->reset_tmplt.array_index;
|
|
qla4_83xx_rd_reg_indirect(ha, p_entry->dr_addr,
|
|
&value);
|
|
ha->reset_tmplt.array[index++] = value;
|
|
|
|
if (index == QLA83XX_MAX_RESET_SEQ_ENTRIES)
|
|
ha->reset_tmplt.array_index = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qla4_83xx_seq_end(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
ha->reset_tmplt.seq_end = 1;
|
|
}
|
|
|
|
static void qla4_83xx_template_end(struct scsi_qla_host *ha,
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr)
|
|
{
|
|
ha->reset_tmplt.template_end = 1;
|
|
|
|
if (ha->reset_tmplt.seq_error == 0) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s: Reset sequence completed SUCCESSFULLY.\n",
|
|
__func__));
|
|
} else {
|
|
ql4_printk(KERN_ERR, ha, "%s: Reset sequence completed with some timeout errors.\n",
|
|
__func__);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qla4_83xx_process_reset_template - Process reset template.
|
|
*
|
|
* Process all entries in reset template till entry with SEQ_END opcode,
|
|
* which indicates end of the reset template processing. Each entry has a
|
|
* Reset Entry header, entry opcode/command, with size of the entry, number
|
|
* of entries in sub-sequence and delay in microsecs or timeout in millisecs.
|
|
*
|
|
* @ha : Pointer to adapter structure
|
|
* @p_buff : Common reset entry header.
|
|
**/
|
|
static void qla4_83xx_process_reset_template(struct scsi_qla_host *ha,
|
|
char *p_buff)
|
|
{
|
|
int index, entries;
|
|
struct qla4_83xx_reset_entry_hdr *p_hdr;
|
|
char *p_entry = p_buff;
|
|
|
|
ha->reset_tmplt.seq_end = 0;
|
|
ha->reset_tmplt.template_end = 0;
|
|
entries = ha->reset_tmplt.hdr->entries;
|
|
index = ha->reset_tmplt.seq_index;
|
|
|
|
for (; (!ha->reset_tmplt.seq_end) && (index < entries); index++) {
|
|
|
|
p_hdr = (struct qla4_83xx_reset_entry_hdr *)p_entry;
|
|
switch (p_hdr->cmd) {
|
|
case OPCODE_NOP:
|
|
break;
|
|
case OPCODE_WRITE_LIST:
|
|
qla4_83xx_write_list(ha, p_hdr);
|
|
break;
|
|
case OPCODE_READ_WRITE_LIST:
|
|
qla4_83xx_read_write_list(ha, p_hdr);
|
|
break;
|
|
case OPCODE_POLL_LIST:
|
|
qla4_83xx_poll_list(ha, p_hdr);
|
|
break;
|
|
case OPCODE_POLL_WRITE_LIST:
|
|
qla4_83xx_poll_write_list(ha, p_hdr);
|
|
break;
|
|
case OPCODE_READ_MODIFY_WRITE:
|
|
qla4_83xx_read_modify_write(ha, p_hdr);
|
|
break;
|
|
case OPCODE_SEQ_PAUSE:
|
|
qla4_83xx_pause(ha, p_hdr);
|
|
break;
|
|
case OPCODE_SEQ_END:
|
|
qla4_83xx_seq_end(ha, p_hdr);
|
|
break;
|
|
case OPCODE_TMPL_END:
|
|
qla4_83xx_template_end(ha, p_hdr);
|
|
break;
|
|
case OPCODE_POLL_READ_LIST:
|
|
qla4_83xx_poll_read_list(ha, p_hdr);
|
|
break;
|
|
default:
|
|
ql4_printk(KERN_ERR, ha, "%s: Unknown command ==> 0x%04x on entry = %d\n",
|
|
__func__, p_hdr->cmd, index);
|
|
break;
|
|
}
|
|
|
|
/* Set pointer to next entry in the sequence. */
|
|
p_entry += p_hdr->size;
|
|
}
|
|
|
|
ha->reset_tmplt.seq_index = index;
|
|
}
|
|
|
|
static void qla4_83xx_process_stop_seq(struct scsi_qla_host *ha)
|
|
{
|
|
ha->reset_tmplt.seq_index = 0;
|
|
qla4_83xx_process_reset_template(ha, ha->reset_tmplt.stop_offset);
|
|
|
|
if (ha->reset_tmplt.seq_end != 1)
|
|
ql4_printk(KERN_ERR, ha, "%s: Abrupt STOP Sub-Sequence end.\n",
|
|
__func__);
|
|
}
|
|
|
|
static void qla4_83xx_process_start_seq(struct scsi_qla_host *ha)
|
|
{
|
|
qla4_83xx_process_reset_template(ha, ha->reset_tmplt.start_offset);
|
|
|
|
if (ha->reset_tmplt.template_end != 1)
|
|
ql4_printk(KERN_ERR, ha, "%s: Abrupt START Sub-Sequence end.\n",
|
|
__func__);
|
|
}
|
|
|
|
static void qla4_83xx_process_init_seq(struct scsi_qla_host *ha)
|
|
{
|
|
qla4_83xx_process_reset_template(ha, ha->reset_tmplt.init_offset);
|
|
|
|
if (ha->reset_tmplt.seq_end != 1)
|
|
ql4_printk(KERN_ERR, ha, "%s: Abrupt INIT Sub-Sequence end.\n",
|
|
__func__);
|
|
}
|
|
|
|
static int qla4_83xx_restart(struct scsi_qla_host *ha)
|
|
{
|
|
int ret_val = QLA_SUCCESS;
|
|
uint32_t idc_ctrl;
|
|
|
|
qla4_83xx_process_stop_seq(ha);
|
|
|
|
/*
|
|
* Collect minidump.
|
|
* If IDC_CTRL BIT1 is set, clear it on going to INIT state and
|
|
* don't collect minidump
|
|
*/
|
|
idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
|
|
if (idc_ctrl & GRACEFUL_RESET_BIT1) {
|
|
qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
|
|
(idc_ctrl & ~GRACEFUL_RESET_BIT1));
|
|
ql4_printk(KERN_INFO, ha, "%s: Graceful RESET: Not collecting minidump\n",
|
|
__func__);
|
|
} else {
|
|
qla4_8xxx_get_minidump(ha);
|
|
}
|
|
|
|
qla4_83xx_process_init_seq(ha);
|
|
|
|
if (qla4_83xx_copy_bootloader(ha)) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Copy bootloader, firmware restart failed!\n",
|
|
__func__);
|
|
ret_val = QLA_ERROR;
|
|
goto exit_restart;
|
|
}
|
|
|
|
qla4_83xx_wr_reg(ha, QLA83XX_FW_IMAGE_VALID, QLA83XX_BOOT_FROM_FLASH);
|
|
qla4_83xx_process_start_seq(ha);
|
|
|
|
exit_restart:
|
|
return ret_val;
|
|
}
|
|
|
|
int qla4_83xx_start_firmware(struct scsi_qla_host *ha)
|
|
{
|
|
int ret_val = QLA_SUCCESS;
|
|
|
|
ret_val = qla4_83xx_restart(ha);
|
|
if (ret_val == QLA_ERROR) {
|
|
ql4_printk(KERN_ERR, ha, "%s: Restart error\n", __func__);
|
|
goto exit_start_fw;
|
|
} else {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Restart done\n",
|
|
__func__));
|
|
}
|
|
|
|
ret_val = qla4_83xx_check_cmd_peg_status(ha);
|
|
if (ret_val == QLA_ERROR)
|
|
ql4_printk(KERN_ERR, ha, "%s: Peg not initialized\n",
|
|
__func__);
|
|
|
|
exit_start_fw:
|
|
return ret_val;
|
|
}
|
|
|
|
/*----------------------Interrupt Related functions ---------------------*/
|
|
|
|
static void qla4_83xx_disable_iocb_intrs(struct scsi_qla_host *ha)
|
|
{
|
|
if (test_and_clear_bit(AF_83XX_IOCB_INTR_ON, &ha->flags))
|
|
qla4_8xxx_intr_disable(ha);
|
|
}
|
|
|
|
static void qla4_83xx_disable_mbox_intrs(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t mb_int, ret;
|
|
|
|
if (test_and_clear_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
|
|
ret = readl(&ha->qla4_83xx_reg->mbox_int);
|
|
mb_int = ret & ~INT_ENABLE_FW_MB;
|
|
writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
|
|
writel(1, &ha->qla4_83xx_reg->leg_int_mask);
|
|
}
|
|
}
|
|
|
|
void qla4_83xx_disable_intrs(struct scsi_qla_host *ha)
|
|
{
|
|
qla4_83xx_disable_mbox_intrs(ha);
|
|
qla4_83xx_disable_iocb_intrs(ha);
|
|
}
|
|
|
|
static void qla4_83xx_enable_iocb_intrs(struct scsi_qla_host *ha)
|
|
{
|
|
if (!test_bit(AF_83XX_IOCB_INTR_ON, &ha->flags)) {
|
|
qla4_8xxx_intr_enable(ha);
|
|
set_bit(AF_83XX_IOCB_INTR_ON, &ha->flags);
|
|
}
|
|
}
|
|
|
|
void qla4_83xx_enable_mbox_intrs(struct scsi_qla_host *ha)
|
|
{
|
|
uint32_t mb_int;
|
|
|
|
if (!test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
|
|
mb_int = INT_ENABLE_FW_MB;
|
|
writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
|
|
writel(0, &ha->qla4_83xx_reg->leg_int_mask);
|
|
set_bit(AF_83XX_MBOX_INTR_ON, &ha->flags);
|
|
}
|
|
}
|
|
|
|
|
|
void qla4_83xx_enable_intrs(struct scsi_qla_host *ha)
|
|
{
|
|
qla4_83xx_enable_mbox_intrs(ha);
|
|
qla4_83xx_enable_iocb_intrs(ha);
|
|
}
|
|
|
|
|
|
void qla4_83xx_queue_mbox_cmd(struct scsi_qla_host *ha, uint32_t *mbx_cmd,
|
|
int incount)
|
|
{
|
|
int i;
|
|
|
|
/* Load all mailbox registers, except mailbox 0. */
|
|
for (i = 1; i < incount; i++)
|
|
writel(mbx_cmd[i], &ha->qla4_83xx_reg->mailbox_in[i]);
|
|
|
|
writel(mbx_cmd[0], &ha->qla4_83xx_reg->mailbox_in[0]);
|
|
|
|
/* Set Host Interrupt register to 1, to tell the firmware that
|
|
* a mailbox command is pending. Firmware after reading the
|
|
* mailbox command, clears the host interrupt register */
|
|
writel(HINT_MBX_INT_PENDING, &ha->qla4_83xx_reg->host_intr);
|
|
}
|
|
|
|
void qla4_83xx_process_mbox_intr(struct scsi_qla_host *ha, int outcount)
|
|
{
|
|
int intr_status;
|
|
|
|
intr_status = readl(&ha->qla4_83xx_reg->risc_intr);
|
|
if (intr_status) {
|
|
ha->mbox_status_count = outcount;
|
|
ha->isp_ops->interrupt_service_routine(ha, intr_status);
|
|
}
|
|
}
|
|
|
|
/**
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* qla4_83xx_isp_reset - Resets ISP and aborts all outstanding commands.
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* @ha: pointer to host adapter structure.
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**/
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int qla4_83xx_isp_reset(struct scsi_qla_host *ha)
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{
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int rval;
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uint32_t dev_state;
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ha->isp_ops->idc_lock(ha);
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dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
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if (ql4xdontresethba)
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qla4_83xx_set_idc_dontreset(ha);
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if (dev_state == QLA8XXX_DEV_READY) {
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/* If IDC_CTRL DONTRESETHBA_BIT0 is set dont do reset
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* recovery */
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if (qla4_83xx_idc_dontreset(ha) == DONTRESET_BIT0) {
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ql4_printk(KERN_ERR, ha, "%s: Reset recovery disabled\n",
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__func__);
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rval = QLA_ERROR;
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goto exit_isp_reset;
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}
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DEBUG2(ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET\n",
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__func__));
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qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
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QLA8XXX_DEV_NEED_RESET);
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} else {
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/* If device_state is NEED_RESET, go ahead with
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* Reset,irrespective of ql4xdontresethba. This is to allow a
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* non-reset-owner to force a reset. Non-reset-owner sets
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* the IDC_CTRL BIT0 to prevent Reset-owner from doing a Reset
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* and then forces a Reset by setting device_state to
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* NEED_RESET. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"%s: HW state already set to NEED_RESET\n",
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__func__));
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}
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/* For ISP8324 and ISP8042, Reset owner is NIC, iSCSI or FCOE based on
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* priority and which drivers are present. Unlike ISP8022, the function
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* setting NEED_RESET, may not be the Reset owner. */
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if (qla4_83xx_can_perform_reset(ha))
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set_bit(AF_8XXX_RST_OWNER, &ha->flags);
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ha->isp_ops->idc_unlock(ha);
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rval = qla4_8xxx_device_state_handler(ha);
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ha->isp_ops->idc_lock(ha);
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qla4_8xxx_clear_rst_ready(ha);
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exit_isp_reset:
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ha->isp_ops->idc_unlock(ha);
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if (rval == QLA_SUCCESS)
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clear_bit(AF_FW_RECOVERY, &ha->flags);
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return rval;
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}
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static void qla4_83xx_dump_pause_control_regs(struct scsi_qla_host *ha)
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{
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u32 val = 0, val1 = 0;
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int i, status = QLA_SUCCESS;
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status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL, &val);
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DEBUG2(ql4_printk(KERN_INFO, ha, "SRE-Shim Ctrl:0x%x\n", val));
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/* Port 0 Rx Buffer Pause Threshold Registers. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"Port 0 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
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for (i = 0; i < 8; i++) {
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4), &val);
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DEBUG2(pr_info("0x%x ", val));
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}
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DEBUG2(pr_info("\n"));
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/* Port 1 Rx Buffer Pause Threshold Registers. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"Port 1 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
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for (i = 0; i < 8; i++) {
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4), &val);
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DEBUG2(pr_info("0x%x ", val));
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}
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DEBUG2(pr_info("\n"));
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/* Port 0 RxB Traffic Class Max Cell Registers. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"Port 0 RxB Traffic Class Max Cell Registers[3..0]:"));
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for (i = 0; i < 4; i++) {
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4), &val);
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DEBUG2(pr_info("0x%x ", val));
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}
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DEBUG2(pr_info("\n"));
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/* Port 1 RxB Traffic Class Max Cell Registers. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"Port 1 RxB Traffic Class Max Cell Registers[3..0]:"));
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for (i = 0; i < 4; i++) {
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4), &val);
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DEBUG2(pr_info("0x%x ", val));
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}
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DEBUG2(pr_info("\n"));
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/* Port 0 RxB Rx Traffic Class Stats. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"Port 0 RxB Rx Traffic Class Stats [TC7..TC0]"));
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for (i = 7; i >= 0; i--) {
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT0_RXB_TC_STATS,
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&val);
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val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT0_RXB_TC_STATS,
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(val | (i << 29)));
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT0_RXB_TC_STATS,
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&val);
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DEBUG2(pr_info("0x%x ", val));
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}
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DEBUG2(pr_info("\n"));
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/* Port 1 RxB Rx Traffic Class Stats. */
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"Port 1 RxB Rx Traffic Class Stats [TC7..TC0]"));
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for (i = 7; i >= 0; i--) {
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT1_RXB_TC_STATS,
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&val);
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val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT1_RXB_TC_STATS,
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(val | (i << 29)));
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status = qla4_83xx_rd_reg_indirect(ha,
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QLA83XX_PORT1_RXB_TC_STATS,
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&val);
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DEBUG2(pr_info("0x%x ", val));
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}
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DEBUG2(pr_info("\n"));
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status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
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&val);
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status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
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&val1);
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DEBUG2(ql4_printk(KERN_INFO, ha,
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"IFB-Pause Thresholds: Port 2:0x%x, Port 3:0x%x\n",
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val, val1));
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}
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static void __qla4_83xx_disable_pause(struct scsi_qla_host *ha)
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{
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int i;
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/* set SRE-Shim Control Register */
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL,
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QLA83XX_SET_PAUSE_VAL);
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for (i = 0; i < 8; i++) {
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/* Port 0 Rx Buffer Pause Threshold Registers. */
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qla4_83xx_wr_reg_indirect(ha,
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QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4),
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QLA83XX_SET_PAUSE_VAL);
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/* Port 1 Rx Buffer Pause Threshold Registers. */
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qla4_83xx_wr_reg_indirect(ha,
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QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4),
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QLA83XX_SET_PAUSE_VAL);
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}
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for (i = 0; i < 4; i++) {
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/* Port 0 RxB Traffic Class Max Cell Registers. */
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qla4_83xx_wr_reg_indirect(ha,
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QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4),
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QLA83XX_SET_TC_MAX_CELL_VAL);
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/* Port 1 RxB Traffic Class Max Cell Registers. */
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qla4_83xx_wr_reg_indirect(ha,
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QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4),
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QLA83XX_SET_TC_MAX_CELL_VAL);
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}
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
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QLA83XX_SET_PAUSE_VAL);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
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QLA83XX_SET_PAUSE_VAL);
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ql4_printk(KERN_INFO, ha, "Disabled pause frames successfully.\n");
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}
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/**
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* qla4_83xx_eport_init - Initialize EPort.
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* @ha: Pointer to host adapter structure.
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*
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* If EPort hardware is in reset state before disabling pause, there would be
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* serious hardware wedging issues. To prevent this perform eport init everytime
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* before disabling pause frames.
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**/
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static void qla4_83xx_eport_init(struct scsi_qla_host *ha)
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{
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/* Clear the 8 registers */
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_REG, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT0, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT1, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT2, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT3, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_SRE_SHIM, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_EPG_SHIM, 0x0);
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_ETHER_PCS, 0x0);
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/* Write any value to Reset Control register */
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qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_CONTROL, 0xFF);
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ql4_printk(KERN_INFO, ha, "EPORT is out of reset.\n");
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}
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void qla4_83xx_disable_pause(struct scsi_qla_host *ha)
|
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{
|
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ha->isp_ops->idc_lock(ha);
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/* Before disabling pause frames, ensure that eport is not in reset */
|
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qla4_83xx_eport_init(ha);
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qla4_83xx_dump_pause_control_regs(ha);
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__qla4_83xx_disable_pause(ha);
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ha->isp_ops->idc_unlock(ha);
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}
|
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|
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/**
|
|
* qla4_83xx_is_detached - Check if we are marked invisible.
|
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* @ha: Pointer to host adapter structure.
|
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**/
|
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int qla4_83xx_is_detached(struct scsi_qla_host *ha)
|
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{
|
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uint32_t drv_active;
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|
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drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
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|
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if (test_bit(AF_INIT_DONE, &ha->flags) &&
|
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!(drv_active & (1 << ha->func_num))) {
|
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DEBUG2(ql4_printk(KERN_INFO, ha, "%s: drv_active = 0x%X\n",
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__func__, drv_active));
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return QLA_SUCCESS;
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}
|
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|
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return QLA_ERROR;
|
|
}
|