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aha/drivers/scsi/qla4xxx/ql4_mbx.c
Karen Higgins 16ed55f9de [SCSI] qla4xxx: Remove hiwat code so scsi eh does not get escalated when we can make progress 
Removed unnecessary hiwat code to free up the number available IOCBs.
Eliminates unnecessary eh_ escalations due to inability to obtain IOCB
pkt for marker.

v2.
- Remove define not used anymore and fix req_q_coun accounting.

Signed-off-by: Karen Higgins <karen.higgins@qlogic.com>
[michaelc: ported patch from qlogic.com driver to upstream]
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-07-30 08:50:01 -05:00

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/*
* QLogic iSCSI HBA Driver
* Copyright (c) 2003-2006 QLogic Corporation
*
* See LICENSE.qla4xxx for copyright and licensing details.
*/
#include "ql4_def.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"
/**
* qla4xxx_mailbox_command - issues mailbox commands
* @ha: Pointer to host adapter structure.
* @inCount: number of mailbox registers to load.
* @outCount: number of mailbox registers to return.
* @mbx_cmd: data pointer for mailbox in registers.
* @mbx_sts: data pointer for mailbox out registers.
*
* This routine sssue mailbox commands and waits for completion.
* If outCount is 0, this routine completes successfully WITHOUT waiting
* for the mailbox command to complete.
**/
static int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
uint8_t outCount, uint32_t *mbx_cmd,
uint32_t *mbx_sts)
{
int status = QLA_ERROR;
uint8_t i;
u_long wait_count;
uint32_t intr_status;
unsigned long flags = 0;
/* Make sure that pointers are valid */
if (!mbx_cmd || !mbx_sts) {
DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
"pointer\n", ha->host_no, __func__));
return status;
}
/* Mailbox code active */
wait_count = MBOX_TOV * 100;
while (wait_count--) {
mutex_lock(&ha->mbox_sem);
if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
set_bit(AF_MBOX_COMMAND, &ha->flags);
mutex_unlock(&ha->mbox_sem);
break;
}
mutex_unlock(&ha->mbox_sem);
if (!wait_count) {
DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
ha->host_no, __func__));
return status;
}
msleep(10);
}
/* To prevent overwriting mailbox registers for a command that has
* not yet been serviced, check to see if a previously issued
* mailbox command is interrupting.
* -----------------------------------------------------------------
*/
spin_lock_irqsave(&ha->hardware_lock, flags);
intr_status = readl(&ha->reg->ctrl_status);
if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
/* Service existing interrupt */
qla4xxx_interrupt_service_routine(ha, intr_status);
clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
}
/* Send the mailbox command to the firmware */
ha->mbox_status_count = outCount;
for (i = 0; i < outCount; i++)
ha->mbox_status[i] = 0;
/* Load all mailbox registers, except mailbox 0. */
for (i = 1; i < inCount; i++)
writel(mbx_cmd[i], &ha->reg->mailbox[i]);
/* Wakeup firmware */
writel(mbx_cmd[0], &ha->reg->mailbox[0]);
readl(&ha->reg->mailbox[0]);
writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait for completion */
/*
* If we don't want status, don't wait for the mailbox command to
* complete. For example, MBOX_CMD_RESET_FW doesn't return status,
* you must poll the inbound Interrupt Mask for completion.
*/
if (outCount == 0) {
status = QLA_SUCCESS;
goto mbox_exit;
}
/* Wait for command to complete */
wait_count = jiffies + MBOX_TOV * HZ;
while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
if (time_after_eq(jiffies, wait_count))
break;
spin_lock_irqsave(&ha->hardware_lock, flags);
intr_status = readl(&ha->reg->ctrl_status);
if (intr_status & INTR_PENDING) {
/*
* Service the interrupt.
* The ISR will save the mailbox status registers
* to a temporary storage location in the adapter
* structure.
*/
ha->mbox_status_count = outCount;
qla4xxx_interrupt_service_routine(ha, intr_status);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
msleep(10);
}
/* Check for mailbox timeout. */
if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
" Scheduling Adapter Reset\n", ha->host_no,
mbx_cmd[0]));
ha->mailbox_timeout_count++;
mbx_sts[0] = (-1);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
goto mbox_exit;
}
/*
* Copy the mailbox out registers to the caller's mailbox in/out
* structure.
*/
spin_lock_irqsave(&ha->hardware_lock, flags);
for (i = 0; i < outCount; i++)
mbx_sts[i] = ha->mbox_status[i];
/* Set return status and error flags (if applicable). */
switch (ha->mbox_status[0]) {
case MBOX_STS_COMMAND_COMPLETE:
status = QLA_SUCCESS;
break;
case MBOX_STS_INTERMEDIATE_COMPLETION:
status = QLA_SUCCESS;
break;
case MBOX_STS_BUSY:
DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
ha->host_no, __func__, mbx_cmd[0]));
ha->mailbox_timeout_count++;
break;
default:
DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
"sts = %08X ****\n", ha->host_no, __func__,
mbx_cmd[0], mbx_sts[0]));
break;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
mbox_exit:
mutex_lock(&ha->mbox_sem);
clear_bit(AF_MBOX_COMMAND, &ha->flags);
mutex_unlock(&ha->mbox_sem);
clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
return status;
}
/**
* qla4xxx_initialize_fw_cb - initializes firmware control block.
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
{
struct init_fw_ctrl_blk *init_fw_cb;
dma_addr_t init_fw_cb_dma;
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
int status = QLA_ERROR;
init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct init_fw_ctrl_blk),
&init_fw_cb_dma, GFP_KERNEL);
if (init_fw_cb == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
ha->host_no, __func__));
return 10;
}
memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
/* Get Initialize Firmware Control Block. */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
mbox_cmd[2] = LSDW(init_fw_cb_dma);
mbox_cmd[3] = MSDW(init_fw_cb_dma);
mbox_cmd[4] = sizeof(struct init_fw_ctrl_blk);
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
dma_free_coherent(&ha->pdev->dev,
sizeof(struct init_fw_ctrl_blk),
init_fw_cb, init_fw_cb_dma);
return status;
}
/* Initialize request and response queues. */
qla4xxx_init_rings(ha);
/* Fill in the request and response queue information. */
init_fw_cb->pri.rqq_consumer_idx = cpu_to_le16(ha->request_out);
init_fw_cb->pri.compq_producer_idx = cpu_to_le16(ha->response_in);
init_fw_cb->pri.rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
init_fw_cb->pri.compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
init_fw_cb->pri.rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
init_fw_cb->pri.rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
init_fw_cb->pri.compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
init_fw_cb->pri.compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
init_fw_cb->pri.shdwreg_addr_lo =
cpu_to_le32(LSDW(ha->shadow_regs_dma));
init_fw_cb->pri.shdwreg_addr_hi =
cpu_to_le32(MSDW(ha->shadow_regs_dma));
/* Set up required options. */
init_fw_cb->pri.fw_options |=
__constant_cpu_to_le16(FWOPT_SESSION_MODE |
FWOPT_INITIATOR_MODE);
init_fw_cb->pri.fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
/* Save some info in adapter structure. */
ha->firmware_options = le16_to_cpu(init_fw_cb->pri.fw_options);
ha->tcp_options = le16_to_cpu(init_fw_cb->pri.ipv4_tcp_opts);
ha->heartbeat_interval = init_fw_cb->pri.hb_interval;
memcpy(ha->ip_address, init_fw_cb->pri.ipv4_addr,
min(sizeof(ha->ip_address), sizeof(init_fw_cb->pri.ipv4_addr)));
memcpy(ha->subnet_mask, init_fw_cb->pri.ipv4_subnet,
min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->pri.ipv4_subnet)));
memcpy(ha->gateway, init_fw_cb->pri.ipv4_gw_addr,
min(sizeof(ha->gateway), sizeof(init_fw_cb->pri.ipv4_gw_addr)));
memcpy(ha->name_string, init_fw_cb->pri.iscsi_name,
min(sizeof(ha->name_string),
sizeof(init_fw_cb->pri.iscsi_name)));
/*memcpy(ha->alias, init_fw_cb->Alias,
min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
/* Save Command Line Paramater info */
ha->port_down_retry_count = le16_to_cpu(init_fw_cb->pri.conn_ka_timeout);
ha->discovery_wait = ql4xdiscoverywait;
/* Send Initialize Firmware Control Block. */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
mbox_cmd[1] = 0;
mbox_cmd[2] = LSDW(init_fw_cb_dma);
mbox_cmd[3] = MSDW(init_fw_cb_dma);
mbox_cmd[4] = sizeof(struct init_fw_ctrl_blk);
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) ==
QLA_SUCCESS)
status = QLA_SUCCESS;
else {
DEBUG2(printk("scsi%ld: %s: MBOX_CMD_INITIALIZE_FIRMWARE "
"failed w/ status %04X\n", ha->host_no, __func__,
mbox_sts[0]));
}
dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
init_fw_cb, init_fw_cb_dma);
return status;
}
/**
* qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
{
struct init_fw_ctrl_blk *init_fw_cb;
dma_addr_t init_fw_cb_dma;
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct init_fw_ctrl_blk),
&init_fw_cb_dma, GFP_KERNEL);
if (init_fw_cb == NULL) {
printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
__func__);
return 10;
}
/* Get Initialize Firmware Control Block. */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
mbox_cmd[2] = LSDW(init_fw_cb_dma);
mbox_cmd[3] = MSDW(init_fw_cb_dma);
mbox_cmd[4] = sizeof(struct init_fw_ctrl_blk);
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
ha->host_no, __func__));
dma_free_coherent(&ha->pdev->dev,
sizeof(struct init_fw_ctrl_blk),
init_fw_cb, init_fw_cb_dma);
return QLA_ERROR;
}
/* Save IP Address. */
memcpy(ha->ip_address, init_fw_cb->pri.ipv4_addr,
min(sizeof(ha->ip_address), sizeof(init_fw_cb->pri.ipv4_addr)));
memcpy(ha->subnet_mask, init_fw_cb->pri.ipv4_subnet,
min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->pri.ipv4_subnet)));
memcpy(ha->gateway, init_fw_cb->pri.ipv4_gw_addr,
min(sizeof(ha->gateway), sizeof(init_fw_cb->pri.ipv4_gw_addr)));
dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
init_fw_cb, init_fw_cb_dma);
return QLA_SUCCESS;
}
/**
* qla4xxx_get_firmware_state - gets firmware state of HBA
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
/* Get firmware version */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
"status %04X\n", ha->host_no, __func__,
mbox_sts[0]));
return QLA_ERROR;
}
ha->firmware_state = mbox_sts[1];
ha->board_id = mbox_sts[2];
ha->addl_fw_state = mbox_sts[3];
DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
ha->host_no, __func__, ha->firmware_state);)
return QLA_SUCCESS;
}
/**
* qla4xxx_get_firmware_status - retrieves firmware status
* @ha: Pointer to host adapter structure.
**/
int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
/* Get firmware version */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
"status %04X\n", ha->host_no, __func__,
mbox_sts[0]));
return QLA_ERROR;
}
return QLA_SUCCESS;
}
/**
* qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
* @ha: Pointer to host adapter structure.
* @fw_ddb_index: Firmware's device database index
* @fw_ddb_entry: Pointer to firmware's device database entry structure
* @num_valid_ddb_entries: Pointer to number of valid ddb entries
* @next_ddb_index: Pointer to next valid device database index
* @fw_ddb_device_state: Pointer to device state
**/
int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
uint16_t fw_ddb_index,
struct dev_db_entry *fw_ddb_entry,
dma_addr_t fw_ddb_entry_dma,
uint32_t *num_valid_ddb_entries,
uint32_t *next_ddb_index,
uint32_t *fw_ddb_device_state,
uint32_t *conn_err_detail,
uint16_t *tcp_source_port_num,
uint16_t *connection_id)
{
int status = QLA_ERROR;
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
/* Make sure the device index is valid */
if (fw_ddb_index >= MAX_DDB_ENTRIES) {
DEBUG2(printk("scsi%ld: %s: index [%d] out of range.\n",
ha->host_no, __func__, fw_ddb_index));
goto exit_get_fwddb;
}
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
mbox_cmd[1] = (uint32_t) fw_ddb_index;
mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
mbox_cmd[4] = sizeof(struct dev_db_entry);
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
QLA_ERROR) {
DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
" with status 0x%04X\n", ha->host_no, __func__,
mbox_sts[0]));
goto exit_get_fwddb;
}
if (fw_ddb_index != mbox_sts[1]) {
DEBUG2(printk("scsi%ld: %s: index mismatch [%d] != [%d].\n",
ha->host_no, __func__, fw_ddb_index,
mbox_sts[1]));
goto exit_get_fwddb;
}
if (fw_ddb_entry) {
dev_info(&ha->pdev->dev, "DDB[%d] MB0 %04x Tot %d Next %d "
"State %04x ConnErr %08x %d.%d.%d.%d:%04d \"%s\"\n",
fw_ddb_index, mbox_sts[0], mbox_sts[2], mbox_sts[3],
mbox_sts[4], mbox_sts[5], fw_ddb_entry->ip_addr[0],
fw_ddb_entry->ip_addr[1], fw_ddb_entry->ip_addr[2],
fw_ddb_entry->ip_addr[3],
le16_to_cpu(fw_ddb_entry->port),
fw_ddb_entry->iscsi_name);
}
if (num_valid_ddb_entries)
*num_valid_ddb_entries = mbox_sts[2];
if (next_ddb_index)
*next_ddb_index = mbox_sts[3];
if (fw_ddb_device_state)
*fw_ddb_device_state = mbox_sts[4];
/*
* RA: This mailbox has been changed to pass connection error and
* details. Its true for ISP4010 as per Version E - Not sure when it
* was changed. Get the time2wait from the fw_dd_entry field :
* default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
* struct.
*/
if (conn_err_detail)
*conn_err_detail = mbox_sts[5];
if (tcp_source_port_num)
*tcp_source_port_num = (uint16_t) mbox_sts[6] >> 16;
if (connection_id)
*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
status = QLA_SUCCESS;
exit_get_fwddb:
return status;
}
/**
* qla4xxx_set_fwddb_entry - sets a ddb entry.
* @ha: Pointer to host adapter structure.
* @fw_ddb_index: Firmware's device database index
* @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
*
* This routine initializes or updates the adapter's device database
* entry for the specified device. It also triggers a login for the
* specified device. Therefore, it may also be used as a secondary
* login routine when a NULL pointer is specified for the fw_ddb_entry.
**/
int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
dma_addr_t fw_ddb_entry_dma)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
/* Do not wait for completion. The firmware will send us an
* ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
*/
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
mbox_cmd[1] = (uint32_t) fw_ddb_index;
mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
mbox_cmd[4] = sizeof(struct dev_db_entry);
return qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
}
/**
* qla4xxx_get_crash_record - retrieves crash record.
* @ha: Pointer to host adapter structure.
*
* This routine retrieves a crash record from the QLA4010 after an 8002h aen.
**/
void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
struct crash_record *crash_record = NULL;
dma_addr_t crash_record_dma = 0;
uint32_t crash_record_size = 0;
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_cmd));
/* Get size of crash record. */
mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
ha->host_no, __func__));
goto exit_get_crash_record;
}
crash_record_size = mbox_sts[4];
if (crash_record_size == 0) {
DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
ha->host_no, __func__));
goto exit_get_crash_record;
}
/* Alloc Memory for Crash Record. */
crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
&crash_record_dma, GFP_KERNEL);
if (crash_record == NULL)
goto exit_get_crash_record;
/* Get Crash Record. */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_cmd));
mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
mbox_cmd[2] = LSDW(crash_record_dma);
mbox_cmd[3] = MSDW(crash_record_dma);
mbox_cmd[4] = crash_record_size;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS)
goto exit_get_crash_record;
/* Dump Crash Record. */
exit_get_crash_record:
if (crash_record)
dma_free_coherent(&ha->pdev->dev, crash_record_size,
crash_record, crash_record_dma);
}
/**
* qla4xxx_get_conn_event_log - retrieves connection event log
* @ha: Pointer to host adapter structure.
**/
void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
struct conn_event_log_entry *event_log = NULL;
dma_addr_t event_log_dma = 0;
uint32_t event_log_size = 0;
uint32_t num_valid_entries;
uint32_t oldest_entry = 0;
uint32_t max_event_log_entries;
uint8_t i;
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_cmd));
/* Get size of crash record. */
mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS)
goto exit_get_event_log;
event_log_size = mbox_sts[4];
if (event_log_size == 0)
goto exit_get_event_log;
/* Alloc Memory for Crash Record. */
event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
&event_log_dma, GFP_KERNEL);
if (event_log == NULL)
goto exit_get_event_log;
/* Get Crash Record. */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_cmd));
mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
mbox_cmd[2] = LSDW(event_log_dma);
mbox_cmd[3] = MSDW(event_log_dma);
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
"log!\n", ha->host_no, __func__));
goto exit_get_event_log;
}
/* Dump Event Log. */
num_valid_entries = mbox_sts[1];
max_event_log_entries = event_log_size /
sizeof(struct conn_event_log_entry);
if (num_valid_entries > max_event_log_entries)
oldest_entry = num_valid_entries % max_event_log_entries;
DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
ha->host_no, num_valid_entries));
if (ql4xextended_error_logging == 3) {
if (oldest_entry == 0) {
/* Circular Buffer has not wrapped around */
for (i=0; i < num_valid_entries; i++) {
qla4xxx_dump_buffer((uint8_t *)event_log+
(i*sizeof(*event_log)),
sizeof(*event_log));
}
}
else {
/* Circular Buffer has wrapped around -
* display accordingly*/
for (i=oldest_entry; i < max_event_log_entries; i++) {
qla4xxx_dump_buffer((uint8_t *)event_log+
(i*sizeof(*event_log)),
sizeof(*event_log));
}
for (i=0; i < oldest_entry; i++) {
qla4xxx_dump_buffer((uint8_t *)event_log+
(i*sizeof(*event_log)),
sizeof(*event_log));
}
}
}
exit_get_event_log:
if (event_log)
dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
event_log_dma);
}
/**
* qla4xxx_reset_lun - issues LUN Reset
* @ha: Pointer to host adapter structure.
* @db_entry: Pointer to device database entry
* @un_entry: Pointer to lun entry structure
*
* This routine performs a LUN RESET on the specified target/lun.
* The caller must ensure that the ddb_entry and lun_entry pointers
* are valid before calling this routine.
**/
int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
int lun)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
int status = QLA_SUCCESS;
DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
ddb_entry->os_target_id, lun));
/*
* Send lun reset command to ISP, so that the ISP will return all
* outstanding requests with RESET status
*/
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_LUN_RESET;
mbox_cmd[1] = ddb_entry->fw_ddb_index;
mbox_cmd[2] = lun << 8;
mbox_cmd[5] = 0x01; /* Immediate Command Enable */
qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
status = QLA_ERROR;
return status;
}
/**
* qla4xxx_reset_target - issues target Reset
* @ha: Pointer to host adapter structure.
* @db_entry: Pointer to device database entry
* @un_entry: Pointer to lun entry structure
*
* This routine performs a TARGET RESET on the specified target.
* The caller must ensure that the ddb_entry pointers
* are valid before calling this routine.
**/
int qla4xxx_reset_target(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
int status = QLA_SUCCESS;
DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
ddb_entry->os_target_id));
/*
* Send target reset command to ISP, so that the ISP will return all
* outstanding requests with RESET status
*/
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
mbox_cmd[1] = ddb_entry->fw_ddb_index;
mbox_cmd[5] = 0x01; /* Immediate Command Enable */
qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
&mbox_sts[0]);
if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
status = QLA_ERROR;
return status;
}
int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
uint32_t offset, uint32_t len)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_READ_FLASH;
mbox_cmd[1] = LSDW(dma_addr);
mbox_cmd[2] = MSDW(dma_addr);
mbox_cmd[3] = offset;
mbox_cmd[4] = len;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
"status %04X %04X, offset %08x, len %08x\n", ha->host_no,
__func__, mbox_sts[0], mbox_sts[1], offset, len));
return QLA_ERROR;
}
return QLA_SUCCESS;
}
/**
* qla4xxx_get_fw_version - gets firmware version
* @ha: Pointer to host adapter structure.
*
* Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
* hold an address for data. Make sure that we write 0 to those mailboxes,
* if unused.
**/
int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
/* Get firmware version. */
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
"status %04X\n", ha->host_no, __func__, mbox_sts[0]));
return QLA_ERROR;
}
/* Save firmware version information. */
ha->firmware_version[0] = mbox_sts[1];
ha->firmware_version[1] = mbox_sts[2];
ha->patch_number = mbox_sts[3];
ha->build_number = mbox_sts[4];
return QLA_SUCCESS;
}
static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
dma_addr_t dma_addr)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
mbox_cmd[2] = LSDW(dma_addr);
mbox_cmd[3] = MSDW(dma_addr);
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
ha->host_no, __func__, mbox_sts[0]));
return QLA_ERROR;
}
return QLA_SUCCESS;
}
static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
{
uint32_t mbox_cmd[MBOX_REG_COUNT];
uint32_t mbox_sts[MBOX_REG_COUNT];
memset(&mbox_cmd, 0, sizeof(mbox_cmd));
memset(&mbox_sts, 0, sizeof(mbox_sts));
mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
QLA_SUCCESS) {
if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
*ddb_index = mbox_sts[2];
} else {
DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
ha->host_no, __func__, mbox_sts[0]));
return QLA_ERROR;
}
} else {
*ddb_index = MAX_PRST_DEV_DB_ENTRIES;
}
return QLA_SUCCESS;
}
int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
{
struct dev_db_entry *fw_ddb_entry;
dma_addr_t fw_ddb_entry_dma;
uint32_t ddb_index;
int ret_val = QLA_SUCCESS;
fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
sizeof(*fw_ddb_entry),
&fw_ddb_entry_dma, GFP_KERNEL);
if (!fw_ddb_entry) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
ret_val = QLA_ERROR;
goto qla4xxx_send_tgts_exit;
}
ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
if (ret_val != QLA_SUCCESS)
goto qla4xxx_send_tgts_exit;
ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
if (ret_val != QLA_SUCCESS)
goto qla4xxx_send_tgts_exit;
memset(fw_ddb_entry->iscsi_alias, 0,
sizeof(fw_ddb_entry->iscsi_alias));
memset(fw_ddb_entry->iscsi_name, 0,
sizeof(fw_ddb_entry->iscsi_name));
memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
memset(fw_ddb_entry->tgt_addr, 0,
sizeof(fw_ddb_entry->tgt_addr));
fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
fw_ddb_entry->port = cpu_to_le16(ntohs(port));
fw_ddb_entry->ip_addr[0] = *ip;
fw_ddb_entry->ip_addr[1] = *(ip + 1);
fw_ddb_entry->ip_addr[2] = *(ip + 2);
fw_ddb_entry->ip_addr[3] = *(ip + 3);
ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
qla4xxx_send_tgts_exit:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
return ret_val;
}
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