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kernel_optimize_test/drivers/scsi/qla4xxx/ql4_init.c
David Somayajulu afaf5a2d34 [SCSI] Initial Commit of qla4xxx 
open-iSCSI driver for Qlogic Corporation's iSCSI HBAs

Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04 13:34:04 -05:00

1341 lines
38 KiB
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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"
/*
* QLogic ISP4xxx Hardware Support Function Prototypes.
*/
static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
{
uint32_t value;
uint8_t func_number;
unsigned long flags;
/* Get the function number */
spin_lock_irqsave(&ha->hardware_lock, flags);
value = readw(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
func_number = (uint8_t) ((value >> 4) & 0x30);
switch (value & ISP_CONTROL_FN_MASK) {
case ISP_CONTROL_FN0_SCSI:
ha->mac_index = 1;
break;
case ISP_CONTROL_FN1_SCSI:
ha->mac_index = 3;
break;
default:
DEBUG2(printk("scsi%ld: %s: Invalid function number, "
"ispControlStatus = 0x%x\n", ha->host_no,
__func__, value));
break;
}
DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
ha->mac_index));
}
/**
* qla4xxx_free_ddb - deallocate ddb
* @ha: pointer to host adapter structure.
* @ddb_entry: pointer to device database entry
*
* This routine deallocates and unlinks the specified ddb_entry from the
* adapter's
**/
void qla4xxx_free_ddb(struct scsi_qla_host *ha, struct ddb_entry *ddb_entry)
{
/* Remove device entry from list */
list_del_init(&ddb_entry->list);
/* Remove device pointer from index mapping arrays */
ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
(struct ddb_entry *) INVALID_ENTRY;
ha->tot_ddbs--;
/* Free memory and scsi-ml struct for device entry */
qla4xxx_destroy_sess(ddb_entry);
}
/**
* qla4xxx_free_ddb_list - deallocate all ddbs
* @ha: pointer to host adapter structure.
*
* This routine deallocates and removes all devices on the sppecified adapter.
**/
void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
{
struct list_head *ptr;
struct ddb_entry *ddb_entry;
while (!list_empty(&ha->ddb_list)) {
ptr = ha->ddb_list.next;
/* Free memory for device entry and remove */
ddb_entry = list_entry(ptr, struct ddb_entry, list);
qla4xxx_free_ddb(ha, ddb_entry);
}
}
/**
* qla4xxx_init_rings - initialize hw queues
* @ha: pointer to host adapter structure.
*
* This routine initializes the internal queues for the specified adapter.
* The QLA4010 requires us to restart the queues at index 0.
* The QLA4000 doesn't care, so just default to QLA4010's requirement.
**/
int qla4xxx_init_rings(struct scsi_qla_host *ha)
{
unsigned long flags = 0;
/* Initialize request queue. */
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->request_out = 0;
ha->request_in = 0;
ha->request_ptr = &ha->request_ring[ha->request_in];
ha->req_q_count = REQUEST_QUEUE_DEPTH;
/* Initialize response queue. */
ha->response_in = 0;
ha->response_out = 0;
ha->response_ptr = &ha->response_ring[ha->response_out];
/*
* Initialize DMA Shadow registers. The firmware is really supposed to
* take care of this, but on some uniprocessor systems, the shadow
* registers aren't cleared-- causing the interrupt_handler to think
* there are responses to be processed when there aren't.
*/
ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
wmb();
writel(0, &ha->reg->req_q_in);
writel(0, &ha->reg->rsp_q_out);
readl(&ha->reg->rsp_q_out);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
}
/**
* qla4xxx_validate_mac_address - validate adapter MAC address(es)
* @ha: pointer to host adapter structure.
*
**/
static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
{
struct flash_sys_info *sys_info;
dma_addr_t sys_info_dma;
int status = QLA_ERROR;
sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
&sys_info_dma, GFP_KERNEL);
if (sys_info == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
goto exit_validate_mac_no_free;
}
memset(sys_info, 0, sizeof(*sys_info));
/* Get flash sys info */
if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
sizeof(*sys_info)) != QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
"failed\n", ha->host_no, __func__));
goto exit_validate_mac;
}
/* Save M.A.C. address & serial_number */
memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
min(sizeof(ha->my_mac),
sizeof(sys_info->physAddr[0].address)));
memcpy(ha->serial_number, &sys_info->acSerialNumber,
min(sizeof(ha->serial_number),
sizeof(sys_info->acSerialNumber)));
status = QLA_SUCCESS;
exit_validate_mac:
dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
sys_info_dma);
exit_validate_mac_no_free:
return status;
}
/**
* qla4xxx_init_local_data - initialize adapter specific local data
* @ha: pointer to host adapter structure.
*
**/
static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
{
/* Initilize aen queue */
ha->aen_q_count = MAX_AEN_ENTRIES;
return qla4xxx_get_firmware_status(ha);
}
static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
{
uint32_t timeout_count;
int ready = 0;
DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
timeout_count--) {
if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
qla4xxx_get_dhcp_ip_address(ha);
/* Get firmware state. */
if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: unable to get firmware "
"state\n", ha->host_no, __func__));
break;
}
if (ha->firmware_state & FW_STATE_ERROR) {
DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
" occurred\n", ha->host_no, __func__));
break;
}
if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
/*
* The firmware has not yet been issued an Initialize
* Firmware command, so issue it now.
*/
if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
break;
/* Go back and test for ready state - no wait. */
continue;
}
if (ha->firmware_state == FW_STATE_READY) {
DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
/* The firmware is ready to process SCSI commands. */
DEBUG2(dev_info(&ha->pdev->dev,
"scsi%ld: %s: MEDIA TYPE - %s\n",
ha->host_no,
__func__, (ha->addl_fw_state &
FW_ADDSTATE_OPTICAL_MEDIA)
!= 0 ? "OPTICAL" : "COPPER"));
DEBUG2(dev_info(&ha->pdev->dev,
"scsi%ld: %s: DHCP STATE Enabled "
"%s\n",
ha->host_no, __func__,
(ha->addl_fw_state &
FW_ADDSTATE_DHCP_ENABLED) != 0 ?
"YES" : "NO"));
DEBUG2(dev_info(&ha->pdev->dev,
"scsi%ld: %s: LINK %s\n",
ha->host_no, __func__,
(ha->addl_fw_state &
FW_ADDSTATE_LINK_UP) != 0 ?
"UP" : "DOWN"));
DEBUG2(dev_info(&ha->pdev->dev,
"scsi%ld: %s: iSNS Service "
"Started %s\n",
ha->host_no, __func__,
(ha->addl_fw_state &
FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
"YES" : "NO"));
ready = 1;
break;
}
DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
"seconds expired= %d\n", ha->host_no, __func__,
ha->firmware_state, ha->addl_fw_state,
timeout_count));
msleep(1000);
} /* end of for */
if (timeout_count <= 0)
DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
ha->host_no, __func__));
if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS) {
DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
" grab an IP address from DHCP server\n",
ha->host_no, __func__));
ready = 1;
}
return ready;
}
/**
* qla4xxx_init_firmware - initializes the firmware.
* @ha: pointer to host adapter structure.
*
**/
static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
{
int status = QLA_ERROR;
dev_info(&ha->pdev->dev, "Initializing firmware..\n");
if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
"control block\n", ha->host_no, __func__));
return status;
}
if (!qla4xxx_fw_ready(ha))
return status;
set_bit(AF_ONLINE, &ha->flags);
return qla4xxx_get_firmware_status(ha);
}
static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
uint32_t fw_ddb_index)
{
struct dev_db_entry *fw_ddb_entry = NULL;
dma_addr_t fw_ddb_entry_dma;
struct ddb_entry *ddb_entry = NULL;
int found = 0;
uint32_t device_state;
/* Make sure the dma buffer is valid */
fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
sizeof(*fw_ddb_entry),
&fw_ddb_entry_dma, GFP_KERNEL);
if (fw_ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
return NULL;
}
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
fw_ddb_entry_dma, NULL, NULL,
&device_state, NULL, NULL, NULL) ==
QLA_ERROR) {
DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
"fw_ddb_index %d\n", ha->host_no, __func__,
fw_ddb_index));
return NULL;
}
/* Allocate DDB if not already allocated. */
DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
__func__, fw_ddb_index));
list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
ISCSI_NAME_SIZE) == 0) {
found++;
break;
}
}
if (!found) {
DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
"new ddb\n", ha->host_no, __func__,
fw_ddb_index));
ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
}
/* if not found allocate new ddb */
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
fw_ddb_entry_dma);
return ddb_entry;
}
/**
* qla4xxx_update_ddb_entry - update driver's internal ddb
* @ha: pointer to host adapter structure.
* @ddb_entry: pointer to device database structure to be filled
* @fw_ddb_index: index of the ddb entry in fw ddb table
*
* This routine updates the driver's internal device database entry
* with information retrieved from the firmware's device database
* entry for the specified device. The ddb_entry->fw_ddb_index field
* must be initialized prior to calling this routine
*
**/
int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry,
uint32_t fw_ddb_index)
{
struct dev_db_entry *fw_ddb_entry = NULL;
dma_addr_t fw_ddb_entry_dma;
int status = QLA_ERROR;
if (ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
__func__));
goto exit_update_ddb;
}
/* Make sure the dma buffer is valid */
fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
sizeof(*fw_ddb_entry),
&fw_ddb_entry_dma, GFP_KERNEL);
if (fw_ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
goto exit_update_ddb;
}
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
fw_ddb_entry_dma, NULL, NULL,
&ddb_entry->fw_ddb_device_state, NULL,
&ddb_entry->tcp_source_port_num,
&ddb_entry->connection_id) ==
QLA_ERROR) {
DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
"fw_ddb_index %d\n", ha->host_no, __func__,
fw_ddb_index));
goto exit_update_ddb;
}
status = QLA_SUCCESS;
ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
ddb_entry->task_mgmt_timeout =
le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
ddb_entry->CmdSn = 0;
ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
ddb_entry->default_relogin_timeout =
le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
/* Update index in case it changed */
ddb_entry->fw_ddb_index = fw_ddb_index;
ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
ddb_entry->port = le16_to_cpu(fw_ddb_entry->portNumber);
ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->TargetPortalGroup);
memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
min(sizeof(ddb_entry->iscsi_name),
sizeof(fw_ddb_entry->iscsiName)));
memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
ha->host_no, __func__, fw_ddb_index,
ddb_entry->fw_ddb_device_state, status));
exit_update_ddb:
if (fw_ddb_entry)
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
return status;
}
/**
* qla4xxx_alloc_ddb - allocate device database entry
* @ha: Pointer to host adapter structure.
* @fw_ddb_index: Firmware's device database index
*
* This routine allocates a ddb_entry, ititializes some values, and
* inserts it into the ddb list.
**/
struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
uint32_t fw_ddb_index)
{
struct ddb_entry *ddb_entry;
DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
__func__, fw_ddb_index));
ddb_entry = qla4xxx_alloc_sess(ha);
if (ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
"to add fw_ddb_index [%d]\n",
ha->host_no, __func__, fw_ddb_index));
return ddb_entry;
}
ddb_entry->fw_ddb_index = fw_ddb_index;
atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
atomic_set(&ddb_entry->relogin_timer, 0);
atomic_set(&ddb_entry->relogin_retry_count, 0);
atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
list_add_tail(&ddb_entry->list, &ha->ddb_list);
ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
ha->tot_ddbs++;
return ddb_entry;
}
/**
* qla4xxx_configure_ddbs - builds driver ddb list
* @ha: Pointer to host adapter structure.
*
* This routine searches for all valid firmware ddb entries and builds
* an internal ddb list. Ddbs that are considered valid are those with
* a device state of SESSION_ACTIVE.
**/
static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
{
int status = QLA_SUCCESS;
uint32_t fw_ddb_index = 0;
uint32_t next_fw_ddb_index = 0;
uint32_t ddb_state;
uint32_t conn_err, err_code;
struct ddb_entry *ddb_entry;
dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
fw_ddb_index = next_fw_ddb_index) {
/* First, let's see if a device exists here */
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
&next_fw_ddb_index, &ddb_state,
&conn_err, NULL, NULL) ==
QLA_ERROR) {
DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
"fw_ddb_index %d failed", ha->host_no,
__func__, fw_ddb_index));
return QLA_ERROR;
}
DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
"next_fw_ddb_index=%d.\n", ha->host_no, __func__,
fw_ddb_index, ddb_state, next_fw_ddb_index));
/* Issue relogin, if necessary. */
if (ddb_state == DDB_DS_SESSION_FAILED ||
ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
/* Try and login to device */
DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
ha->host_no, __func__, fw_ddb_index));
err_code = ((conn_err & 0x00ff0000) >> 16);
if (err_code == 0x1c || err_code == 0x06) {
DEBUG2(printk("scsi%ld: %s send target "
"completed "
"or access denied failure\n",
ha->host_no, __func__));
} else
qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
}
if (ddb_state != DDB_DS_SESSION_ACTIVE)
goto next_one;
/*
* if fw_ddb with session active state found,
* add to ddb_list
*/
DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
ha->host_no, __func__, fw_ddb_index));
/* Add DDB to internal our ddb list. */
ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
if (ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
"for device at fw_ddb_index %d\n",
ha->host_no, __func__, fw_ddb_index));
return QLA_ERROR;
}
/* Fill in the device structure */
if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
QLA_ERROR) {
ha->fw_ddb_index_map[fw_ddb_index] =
(struct ddb_entry *)INVALID_ENTRY;
DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
"for fw_ddb_index %d.\n",
ha->host_no, __func__, fw_ddb_index));
return QLA_ERROR;
}
next_one:
/* We know we've reached the last device when
* next_fw_ddb_index is 0 */
if (next_fw_ddb_index == 0)
break;
}
dev_info(&ha->pdev->dev, "DDB list done..\n");
return status;
}
struct qla4_relog_scan {
int halt_wait;
uint32_t conn_err;
uint32_t err_code;
uint32_t fw_ddb_index;
uint32_t next_fw_ddb_index;
uint32_t fw_ddb_device_state;
};
static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
{
struct ddb_entry *ddb_entry;
/*
* Don't want to do a relogin if connection
* error is 0x1c.
*/
rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
if (rs->err_code == 0x1c || rs->err_code == 0x06) {
DEBUG2(printk(
"scsi%ld: %s send target"
" completed or "
"access denied failure\n",
ha->host_no, __func__));
} else {
/* We either have a device that is in
* the process of relogging in or a
* device that is waiting to be
* relogged in */
rs->halt_wait = 0;
ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
rs->fw_ddb_index);
if (ddb_entry == NULL)
return QLA_ERROR;
if (ddb_entry->dev_scan_wait_to_start_relogin != 0
&& time_after_eq(jiffies,
ddb_entry->
dev_scan_wait_to_start_relogin))
{
ddb_entry->dev_scan_wait_to_start_relogin = 0;
qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
}
}
return QLA_SUCCESS;
}
static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
struct qla4_relog_scan *rs)
{
int error;
/* scan for relogins
* ----------------- */
for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
rs->fw_ddb_index = rs->next_fw_ddb_index) {
if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
NULL, &rs->next_fw_ddb_index,
&rs->fw_ddb_device_state,
&rs->conn_err, NULL, NULL)
== QLA_ERROR)
return QLA_ERROR;
if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
rs->halt_wait = 0;
if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
error = qla4_test_rdy(ha, rs);
if (error)
return error;
}
/* We know we've reached the last device when
* next_fw_ddb_index is 0 */
if (rs->next_fw_ddb_index == 0)
break;
}
return QLA_SUCCESS;
}
/**
* qla4xxx_devices_ready - wait for target devices to be logged in
* @ha: pointer to adapter structure
*
* This routine waits up to ql4xdiscoverywait seconds
* F/W database during driver load time.
**/
static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
{
int error;
unsigned long discovery_wtime;
struct qla4_relog_scan rs;
discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
do {
/* poll for AEN. */
qla4xxx_get_firmware_state(ha);
if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
/* Set time-between-relogin timer */
qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
}
/* if no relogins active or needed, halt discvery wait */
rs.halt_wait = 1;
error = qla4_scan_for_relogin(ha, &rs);
if (rs.halt_wait) {
DEBUG2(printk("scsi%ld: %s: Delay halted. Devices "
"Ready.\n", ha->host_no, __func__));
return QLA_SUCCESS;
}
msleep(2000);
} while (!time_after_eq(jiffies, discovery_wtime));
DEBUG3(qla4xxx_get_conn_event_log(ha));
return QLA_SUCCESS;
}
static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
{
unsigned long wtime;
/* Flush the 0x8014 AEN from the firmware as a result of
* Auto connect. We are basically doing get_firmware_ddb()
* to determine whether we need to log back in or not.
* Trying to do a set ddb before we have processed 0x8014
* will result in another set_ddb() for the same ddb. In other
* words there will be stale entries in the aen_q.
*/
wtime = jiffies + (2 * HZ);
do {
if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
if (ha->firmware_state & (BIT_2 | BIT_0))
return;
if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
msleep(1000);
} while (!time_after_eq(jiffies, wtime));
}
static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
{
uint16_t fw_ddb_index;
int status = QLA_SUCCESS;
/* free the ddb list if is not empty */
if (!list_empty(&ha->ddb_list))
qla4xxx_free_ddb_list(ha);
for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
ha->fw_ddb_index_map[fw_ddb_index] =
(struct ddb_entry *)INVALID_ENTRY;
ha->tot_ddbs = 0;
qla4xxx_flush_AENS(ha);
/*
* First perform device discovery for active
* fw ddb indexes and build
* ddb list.
*/
if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
return status;
/* Wait for an AEN */
qla4xxx_devices_ready(ha);
/*
* Targets can come online after the inital discovery, so processing
* the aens here will catch them.
*/
if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
return status;
}
/**
* qla4xxx_update_ddb_list - update the driver ddb list
* @ha: pointer to host adapter structure.
*
* This routine obtains device information from the F/W database after
* firmware or adapter resets. The device table is preserved.
**/
int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
{
int status = QLA_SUCCESS;
struct ddb_entry *ddb_entry, *detemp;
/* Update the device information for all devices. */
list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
qla4xxx_update_ddb_entry(ha, ddb_entry,
ddb_entry->fw_ddb_index);
if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
"ONLINE\n", ha->host_no, __func__,
ddb_entry->fw_ddb_index));
} else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
qla4xxx_mark_device_missing(ha, ddb_entry);
}
return status;
}
/**
* qla4xxx_relogin_device - re-establish session
* @ha: Pointer to host adapter structure.
* @ddb_entry: Pointer to device database entry
*
* This routine does a session relogin with the specified device.
* The ddb entry must be assigned prior to making this call.
**/
int qla4xxx_relogin_device(struct scsi_qla_host *ha,
struct ddb_entry * ddb_entry)
{
uint16_t relogin_timer;
relogin_timer = max(ddb_entry->default_relogin_timeout,
(uint16_t)RELOGIN_TOV);
atomic_set(&ddb_entry->relogin_timer, relogin_timer);
DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
ddb_entry->fw_ddb_index, relogin_timer));
qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
return QLA_SUCCESS;
}
/**
* qla4010_get_topcat_presence - check if it is QLA4040 TopCat Chip
* @ha: Pointer to host adapter structure.
*
**/
static int qla4010_get_topcat_presence(struct scsi_qla_host *ha)
{
unsigned long flags;
uint16_t topcat;
if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS)
return QLA_ERROR;
spin_lock_irqsave(&ha->hardware_lock, flags);
topcat = rd_nvram_word(ha, offsetof(struct eeprom_data,
isp4010.topcat));
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if ((topcat & TOPCAT_MASK) == TOPCAT_PRESENT)
set_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
else
clear_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
ql4xxx_unlock_nvram(ha);
return QLA_SUCCESS;
}
static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
{
unsigned long flags;
union external_hw_config_reg extHwConfig;
DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
__func__));
if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
return (QLA_ERROR);
if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
ql4xxx_unlock_flash(ha);
return (QLA_ERROR);
}
/* Get EEPRom Parameters from NVRAM and validate */
dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
spin_lock_irqsave(&ha->hardware_lock, flags);
extHwConfig.Asuint32_t =
rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
spin_unlock_irqrestore(&ha->hardware_lock, flags);
} else {
/*
* QLogic adapters should always have a valid NVRAM.
* If not valid, do not load.
*/
dev_warn(&ha->pdev->dev,
"scsi%ld: %s: EEProm checksum invalid. "
"Please update your EEPROM\n", ha->host_no,
__func__);
/* set defaults */
if (is_qla4010(ha))
extHwConfig.Asuint32_t = 0x1912;
else if (is_qla4022(ha))
extHwConfig.Asuint32_t = 0x0023;
}
DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
ha->host_no, __func__, extHwConfig.Asuint32_t));
spin_lock_irqsave(&ha->hardware_lock, flags);
writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
readl(isp_ext_hw_conf(ha));
spin_unlock_irqrestore(&ha->hardware_lock, flags);
ql4xxx_unlock_nvram(ha);
ql4xxx_unlock_flash(ha);
return (QLA_SUCCESS);
}
static void qla4x00_pci_config(struct scsi_qla_host *ha)
{
uint16_t w, mwi;
dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
pci_set_master(ha->pdev);
mwi = 0;
if (pci_set_mwi(ha->pdev))
mwi = PCI_COMMAND_INVALIDATE;
/*
* We want to respect framework's setting of PCI configuration space
* command register and also want to make sure that all bits of
* interest to us are properly set in command register.
*/
pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
w &= ~PCI_COMMAND_INTX_DISABLE;
pci_write_config_word(ha->pdev, PCI_COMMAND, w);
}
static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
{
int status = QLA_ERROR;
uint32_t max_wait_time;
unsigned long flags;
uint32_t mbox_status;
dev_info(&ha->pdev->dev, "Starting firmware ...\n");
/*
* Start firmware from flash ROM
*
* WORKAROUND: Stuff a non-constant value that the firmware can
* use as a seed for a random number generator in MB7 prior to
* setting BOOT_ENABLE. Fixes problem where the TCP
* connections use the same TCP ports after each reboot,
* causing some connections to not get re-established.
*/
DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
ha->host_no, __func__));
spin_lock_irqsave(&ha->hardware_lock, flags);
writel(jiffies, &ha->reg->mailbox[7]);
if (is_qla4022(ha))
writel(set_rmask(NVR_WRITE_ENABLE),
&ha->reg->u1.isp4022.nvram);
writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait for firmware to come UP. */
max_wait_time = FIRMWARE_UP_TOV * 4;
do {
uint32_t ctrl_status;
spin_lock_irqsave(&ha->hardware_lock, flags);
ctrl_status = readw(&ha->reg->ctrl_status);
mbox_status = readw(&ha->reg->mailbox[0]);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
break;
if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
break;
DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
"complete... ctrl_sts=0x%x, remaining=%d\n",
ha->host_no, __func__, ctrl_status,
max_wait_time));
msleep(250);
} while ((max_wait_time--));
if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
DEBUG(printk("scsi%ld: %s: Firmware has started\n",
ha->host_no, __func__));
spin_lock_irqsave(&ha->hardware_lock, flags);
writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
&ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
status = QLA_SUCCESS;
} else {
printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
"- mbox status 0x%x\n", ha->host_no, __func__,
mbox_status);
status = QLA_ERROR;
}
return status;
}
static int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
{
#define QL4_LOCK_DRVR_WAIT 300
#define QL4_LOCK_DRVR_SLEEP 100
int drvr_wait = QL4_LOCK_DRVR_WAIT;
while (drvr_wait) {
if (ql4xxx_lock_drvr(a) == 0) {
msleep(QL4_LOCK_DRVR_SLEEP);
if (drvr_wait) {
DEBUG2(printk("scsi%ld: %s: Waiting for "
"Global Init Semaphore...n",
a->host_no,
__func__));
}
drvr_wait -= QL4_LOCK_DRVR_SLEEP;
} else {
DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
"acquired.n", a->host_no, __func__));
return QLA_SUCCESS;
}
}
return QLA_ERROR;
}
/**
* qla4xxx_start_firmware - starts qla4xxx firmware
* @ha: Pointer to host adapter structure.
*
* This routine performs the neccessary steps to start the firmware for
* the QLA4010 adapter.
**/
static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
{
unsigned long flags = 0;
uint32_t mbox_status;
int status = QLA_ERROR;
int soft_reset = 1;
int config_chip = 0;
if (is_qla4010(ha)){
if (qla4010_get_topcat_presence(ha) != QLA_SUCCESS)
return QLA_ERROR;
}
if (is_qla4022(ha))
ql4xxx_set_mac_number(ha);
if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
return QLA_ERROR;
spin_lock_irqsave(&ha->hardware_lock, flags);
DEBUG2(printk("scsi%ld: %s: port_ctrl = 0x%08X\n", ha->host_no,
__func__, readw(isp_port_ctrl(ha))));
DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
__func__, readw(isp_port_status(ha))));
/* Is Hardware already initialized? */
if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
DEBUG(printk("scsi%ld: %s: Hardware has already been "
"initialized\n", ha->host_no, __func__));
/* Receive firmware boot acknowledgement */
mbox_status = readw(&ha->reg->mailbox[0]);
DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
"0x%x\n", ha->host_no, __func__, mbox_status));
/* Is firmware already booted? */
if (mbox_status == 0) {
/* F/W not running, must be config by net driver */
config_chip = 1;
soft_reset = 0;
} else {
writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
&ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s: Get firmware "
"state -- state = 0x%x\n",
ha->host_no,
__func__, ha->firmware_state));
/* F/W is running */
if (ha->firmware_state &
FW_STATE_CONFIG_WAIT) {
DEBUG2(printk("scsi%ld: %s: Firmware "
"in known state -- "
"config and "
"boot, state = 0x%x\n",
ha->host_no, __func__,
ha->firmware_state));
config_chip = 1;
soft_reset = 0;
}
} else {
DEBUG2(printk("scsi%ld: %s: Firmware in "
"unknown state -- resetting,"
" state = "
"0x%x\n", ha->host_no, __func__,
ha->firmware_state));
}
spin_lock_irqsave(&ha->hardware_lock, flags);
}
} else {
DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
"started - resetting\n", ha->host_no, __func__));
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
ha->host_no, __func__, soft_reset, config_chip));
if (soft_reset) {
DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
__func__));
status = qla4xxx_soft_reset(ha);
if (status == QLA_ERROR) {
DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
ha->host_no, __func__));
ql4xxx_unlock_drvr(ha);
return QLA_ERROR;
}
config_chip = 1;
/* Reset clears the semaphore, so aquire again */
if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
return QLA_ERROR;
}
if (config_chip) {
if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
status = qla4xxx_start_firmware_from_flash(ha);
}
ql4xxx_unlock_drvr(ha);
if (status == QLA_SUCCESS) {
qla4xxx_get_fw_version(ha);
if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
qla4xxx_get_crash_record(ha);
} else {
DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
ha->host_no, __func__));
}
return status;
}
/**
* qla4xxx_initialize_adapter - initiailizes hba
* @ha: Pointer to host adapter structure.
* @renew_ddb_list: Indicates what to do with the adapter's ddb list
* after adapter recovery has completed.
* 0=preserve ddb list, 1=destroy and rebuild ddb list
*
* This routine parforms all of the steps necessary to initialize the adapter.
*
**/
int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
uint8_t renew_ddb_list)
{
int status = QLA_ERROR;
int8_t ip_address[IP_ADDR_LEN] = {0} ;
ha->eeprom_cmd_data = 0;
qla4x00_pci_config(ha);
qla4xxx_disable_intrs(ha);
/* Initialize the Host adapter request/response queues and firmware */
if (qla4xxx_start_firmware(ha) == QLA_ERROR)
return status;
if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
return status;
if (qla4xxx_init_local_data(ha) == QLA_ERROR)
return status;
status = qla4xxx_init_firmware(ha);
if (status == QLA_ERROR)
return status;
/*
* FW is waiting to get an IP address from DHCP server: Skip building
* the ddb_list and wait for DHCP lease acquired aen to come in
* followed by 0x8014 aen" to trigger the tgt discovery process.
*/
if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
return status;
/* Skip device discovery if ip and subnet is zero */
if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
return status;
if (renew_ddb_list == PRESERVE_DDB_LIST) {
/*
* We want to preserve lun states (i.e. suspended, etc.)
* for recovery initiated by the driver. So just update
* the device states for the existing ddb_list.
*/
qla4xxx_reinitialize_ddb_list(ha);
} else if (renew_ddb_list == REBUILD_DDB_LIST) {
/*
* We want to build the ddb_list from scratch during
* driver initialization and recovery initiated by the
* INT_HBA_RESET IOCTL.
*/
status = qla4xxx_initialize_ddb_list(ha);
if (status == QLA_ERROR) {
DEBUG2(printk("%s(%ld) Error occurred during build"
"ddb list\n", __func__, ha->host_no));
goto exit_init_hba;
}
}
if (!ha->tot_ddbs) {
DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
"present in Firmware device database\n",
ha->host_no));
}
exit_init_hba:
return status;
}
/**
* qla4xxx_add_device_dynamically - ddb addition due to an AEN
* @ha: Pointer to host adapter structure.
* @fw_ddb_index: Firmware's device database index
*
* This routine processes adds a device as a result of an 8014h AEN.
**/
static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
uint32_t fw_ddb_index)
{
struct ddb_entry * ddb_entry;
/* First allocate a device structure */
ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
if (ddb_entry == NULL) {
DEBUG2(printk(KERN_WARNING
"scsi%ld: Unable to allocate memory to add "
"fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
return;
}
if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
QLA_ERROR) {
ha->fw_ddb_index_map[fw_ddb_index] =
(struct ddb_entry *)INVALID_ENTRY;
DEBUG2(printk(KERN_WARNING
"scsi%ld: failed to add new device at index "
"[%d]\n Unable to retrieve fw ddb entry\n",
ha->host_no, fw_ddb_index));
qla4xxx_free_ddb(ha, ddb_entry);
return;
}
if (qla4xxx_add_sess(ddb_entry)) {
DEBUG2(printk(KERN_WARNING
"scsi%ld: failed to add new device at index "
"[%d]\n Unable to add connection and session\n",
ha->host_no, fw_ddb_index));
qla4xxx_free_ddb(ha, ddb_entry);
}
}
/**
* qla4xxx_process_ddb_changed - process ddb state change
* @ha - Pointer to host adapter structure.
* @fw_ddb_index - Firmware's device database index
* @state - Device state
*
* This routine processes a Decive Database Changed AEN Event.
**/
int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
uint32_t fw_ddb_index, uint32_t state)
{
struct ddb_entry * ddb_entry;
uint32_t old_fw_ddb_device_state;
/* check for out of range index */
if (fw_ddb_index >= MAX_DDB_ENTRIES)
return QLA_ERROR;
/* Get the corresponging ddb entry */
ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
/* Device does not currently exist in our database. */
if (ddb_entry == NULL) {
if (state == DDB_DS_SESSION_ACTIVE)
qla4xxx_add_device_dynamically(ha, fw_ddb_index);
return QLA_SUCCESS;
}
/* Device already exists in our database. */
old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
"index [%d]\n", ha->host_no, __func__,
ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
if (old_fw_ddb_device_state == state &&
state == DDB_DS_SESSION_ACTIVE) {
/* Do nothing, state not changed. */
return QLA_SUCCESS;
}
ddb_entry->fw_ddb_device_state = state;
/* Device is back online. */
if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
atomic_set(&ddb_entry->port_down_timer,
ha->port_down_retry_count);
atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
atomic_set(&ddb_entry->relogin_retry_count, 0);
atomic_set(&ddb_entry->relogin_timer, 0);
clear_bit(DF_RELOGIN, &ddb_entry->flags);
clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
iscsi_if_create_session_done(ddb_entry->conn);
/*
* Change the lun state to READY in case the lun TIMEOUT before
* the device came back.
*/
} else {
/* Device went away, try to relogin. */
/* Mark device missing */
if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
qla4xxx_mark_device_missing(ha, ddb_entry);
/*
* Relogin if device state changed to a not active state.
* However, do not relogin if this aen is a result of an IOCTL
* logout (DF_NO_RELOGIN) or if this is a discovered device.
*/
if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
!test_bit(DF_RELOGIN, &ddb_entry->flags) &&
!test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
!test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
/*
* This triggers a relogin. After the relogin_timer
* expires, the relogin gets scheduled. We must wait a
* minimum amount of time since receiving an 0x8014 AEN
* with failed device_state or a logout response before
* we can issue another relogin.
*/
/* Firmware padds this timeout: (time2wait +1).
* Driver retry to login should be longer than F/W.
* Otherwise F/W will fail
* set_ddb() mbx cmd with 0x4005 since it still
* counting down its time2wait.
*/
atomic_set(&ddb_entry->relogin_timer, 0);
atomic_set(&ddb_entry->retry_relogin_timer,
ddb_entry->default_time2wait + 4);
}
}
return QLA_SUCCESS;
}
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