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linux/drivers/scsi/qla4xxx/ql4_init.c
Vikas Chaudhary fc7657c9d9 [SCSI] qla4xxx: cleanup function qla4xxx_process_ddb_changed 
We don't need to check ddb old state we can take action
based on ddb new state.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-03-23 12:53:01 -05:00

1496 lines
45 KiB
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/*
* QLogic iSCSI HBA Driver
* Copyright (c) 2003-2010 QLogic Corporation
*
* See LICENSE.qla4xxx for copyright and licensing details.
*/
#include <scsi/iscsi_if.h>
#include "ql4_def.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"
static struct ddb_entry *qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
uint32_t fw_ddb_index);
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_response_q_entries() - Initializes response queue entries.
* @ha: HA context
*
* Beginning of request ring has initialization control block already built
* by nvram config routine.
**/
static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
{
uint16_t cnt;
struct response *pkt;
pkt = (struct response *)ha->response_ptr;
for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
pkt->signature = RESPONSE_PROCESSED;
pkt++;
}
}
/**
* 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];
if (is_qla8022(ha)) {
writel(0,
(unsigned long __iomem *)&ha->qla4_8xxx_reg->req_q_out);
writel(0,
(unsigned long __iomem *)&ha->qla4_8xxx_reg->rsp_q_in);
writel(0,
(unsigned long __iomem *)&ha->qla4_8xxx_reg->rsp_q_out);
} else {
/*
* 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);
}
qla4xxx_init_response_q_entries(ha);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;
}
/**
* qla4xxx_get_sys_info - validate adapter MAC address(es)
* @ha: pointer to host adapter structure.
*
**/
int qla4xxx_get_sys_info(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_get_sys_info_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_get_sys_info;
}
/* 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_get_sys_info:
dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
sys_info_dma);
exit_get_sys_info_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)
{
/* Initialize aen queue */
ha->aen_q_count = MAX_AEN_ENTRIES;
return qla4xxx_get_firmware_status(ha);
}
static uint8_t
qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
{
uint8_t ipv4_wait = 0;
uint8_t ipv6_wait = 0;
int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
/* If both IPv4 & IPv6 are enabled, possibly only one
* IP address may be acquired, so check to see if we
* need to wait for another */
if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
((ha->addl_fw_state &
FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
ipv4_wait = 1;
}
if (((ha->ipv6_addl_options &
IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
((ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING) ||
(ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING) ||
(ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING))) {
ipv6_wait = 1;
if ((ha->ipv6_link_local_state ==
IP_ADDRSTATE_PREFERRED) ||
(ha->ipv6_addr0_state == IP_ADDRSTATE_PREFERRED) ||
(ha->ipv6_addr1_state == IP_ADDRSTATE_PREFERRED)) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
"Preferred IP configured."
" Don't wait!\n", ha->host_no,
__func__));
ipv6_wait = 0;
}
if (memcmp(&ha->ipv6_default_router_addr, ip_address,
IPv6_ADDR_LEN) == 0) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
"No Router configured. "
"Don't wait!\n", ha->host_no,
__func__));
ipv6_wait = 0;
}
if ((ha->ipv6_default_router_state ==
IPV6_RTRSTATE_MANUAL) &&
(ha->ipv6_link_local_state ==
IP_ADDRSTATE_TENTATIVE) &&
(memcmp(&ha->ipv6_link_local_addr,
&ha->ipv6_default_router_addr, 4) == 0)) {
DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
"IP configured. Don't wait!\n",
ha->host_no, __func__));
ipv6_wait = 0;
}
}
if (ipv4_wait || ipv6_wait) {
DEBUG2(printk("scsi%ld: %s: Wait for additional "
"IP(s) \"", ha->host_no, __func__));
if (ipv4_wait)
DEBUG2(printk("IPv4 "));
if (ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING)
DEBUG2(printk("IPv6LinkLocal "));
if (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING)
DEBUG2(printk("IPv6Addr0 "));
if (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING)
DEBUG2(printk("IPv6Addr1 "));
DEBUG2(printk("\"\n"));
}
}
return ipv4_wait|ipv6_wait;
}
static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
{
uint32_t timeout_count;
int ready = 0;
DEBUG2(ql4_printk(KERN_INFO, ha, "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_WAIT_AUTOCONNECT) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
"AUTOCONNECT in progress\n",
ha->host_no, __func__));
}
if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
" CONFIGURING IP\n",
ha->host_no, __func__));
/*
* Check for link state after 15 secs and if link is
* still DOWN then, cable is unplugged. Ignore "DHCP
* in Progress/CONFIGURING IP" bit to check if firmware
* is in ready state or not after 15 secs.
* This is applicable for both 2.x & 3.x firmware
*/
if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
" LINK UP (Cable plugged)\n",
ha->host_no, __func__));
} else if (ha->firmware_state &
(FW_STATE_CONFIGURING_IP |
FW_STATE_READY)) {
DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
"LINK DOWN (Cable unplugged)\n",
ha->host_no, __func__));
ha->firmware_state = FW_STATE_READY;
}
}
}
if (ha->firmware_state == FW_STATE_READY) {
/* If DHCP IP Addr is available, retrieve it now. */
if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
&ha->dpc_flags))
qla4xxx_get_dhcp_ip_address(ha);
if (!qla4xxx_wait_for_ip_config(ha) ||
timeout_count == 1) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"Firmware Ready..\n"));
/* The firmware is ready to process SCSI
commands. */
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: %s: MEDIA TYPE"
" - %s\n", ha->host_no,
__func__, (ha->addl_fw_state &
FW_ADDSTATE_OPTICAL_MEDIA)
!= 0 ? "OPTICAL" : "COPPER"));
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: %s: DHCPv4 STATE"
" Enabled %s\n", ha->host_no,
__func__, (ha->addl_fw_state &
FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
"YES" : "NO"));
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: %s: LINK %s\n",
ha->host_no, __func__,
(ha->addl_fw_state &
FW_ADDSTATE_LINK_UP) != 0 ?
"UP" : "DOWN"));
DEBUG2(ql4_printk(KERN_INFO, ha,
"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));
if (is_qla4032(ha) &&
!(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
(timeout_count < ADAPTER_INIT_TOV - 5)) {
break;
}
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_CONFIGURING_IP) {
DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
"it's waiting to configure an IP address\n",
ha->host_no, __func__));
ready = 1;
} else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
DEBUG2(printk("scsi%ld: %s: FW initialized, but "
"auto-discovery still in process\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;
if (is_aer_supported(ha) &&
test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
return status;
/* For 82xx, stop firmware before initializing because if BIOS
* has previously initialized firmware, then driver's initialize
* firmware will fail. */
if (is_qla8022(ha))
qla4_8xxx_stop_firmware(ha);
ql4_printk(KERN_INFO, ha, "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;
return qla4xxx_get_firmware_status(ha);
}
static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
uint32_t fw_ddb_index,
uint32_t *new_tgt)
{
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;
*new_tgt = 0;
/* 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_get_ddb_entry_no_free;
}
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));
goto exit_get_ddb_entry;
}
/* 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->iscsi_name,
ISCSI_NAME_SIZE) == 0) &&
(ddb_entry->tpgt ==
le32_to_cpu(fw_ddb_entry->tgt_portal_grp)) &&
(memcmp(ddb_entry->isid, fw_ddb_entry->isid,
sizeof(ddb_entry->isid)) == 0)) {
found++;
break;
}
}
/* if not found allocate new ddb */
if (!found) {
DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
"new ddb\n", ha->host_no, __func__,
fw_ddb_index));
*new_tgt = 1;
ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
}
exit_get_ddb_entry:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
fw_ddb_entry_dma);
exit_get_ddb_entry_no_free:
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
*
**/
static 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;
uint32_t conn_err;
if (ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
__func__));
goto exit_update_ddb_no_free;
}
/* 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_no_free;
}
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
fw_ddb_entry_dma, NULL, NULL,
&ddb_entry->fw_ddb_device_state, &conn_err,
&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->options = le16_to_cpu(fw_ddb_entry->options);
ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
ddb_entry->task_mgmt_timeout =
le16_to_cpu(fw_ddb_entry->def_timeout);
ddb_entry->CmdSn = 0;
ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
ddb_entry->default_relogin_timeout =
le16_to_cpu(fw_ddb_entry->def_timeout);
ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
/* 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->port);
ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
min(sizeof(ddb_entry->iscsi_name),
sizeof(fw_ddb_entry->iscsi_name)));
memcpy(&ddb_entry->iscsi_alias[0], &fw_ddb_entry->iscsi_alias[0],
min(sizeof(ddb_entry->iscsi_alias),
sizeof(fw_ddb_entry->iscsi_alias)));
memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
ddb_entry->iscsi_max_burst_len = fw_ddb_entry->iscsi_max_burst_len;
ddb_entry->iscsi_max_outsnd_r2t = fw_ddb_entry->iscsi_max_outsnd_r2t;
ddb_entry->iscsi_first_burst_len = fw_ddb_entry->iscsi_first_burst_len;
ddb_entry->iscsi_max_rcv_data_seg_len =
fw_ddb_entry->iscsi_max_rcv_data_seg_len;
ddb_entry->iscsi_max_snd_data_seg_len =
fw_ddb_entry->iscsi_max_snd_data_seg_len;
if (ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
memcpy(&ddb_entry->remote_ipv6_addr,
fw_ddb_entry->ip_addr,
min(sizeof(ddb_entry->remote_ipv6_addr),
sizeof(fw_ddb_entry->ip_addr)));
memcpy(&ddb_entry->link_local_ipv6_addr,
fw_ddb_entry->link_local_ipv6_addr,
min(sizeof(ddb_entry->link_local_ipv6_addr),
sizeof(fw_ddb_entry->link_local_ipv6_addr)));
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
" ConnErr %08x IP %pI6 "
":%04d \"%s\"\n",
__func__, fw_ddb_index,
ddb_entry->fw_ddb_device_state,
conn_err, fw_ddb_entry->ip_addr,
le16_to_cpu(fw_ddb_entry->port),
fw_ddb_entry->iscsi_name));
} else
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
" ConnErr %08x IP %pI4 "
":%04d \"%s\"\n",
__func__, fw_ddb_index,
ddb_entry->fw_ddb_device_state,
conn_err, fw_ddb_entry->ip_addr,
le16_to_cpu(fw_ddb_entry->port),
fw_ddb_entry->iscsi_name));
exit_update_ddb:
if (fw_ddb_entry)
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
exit_update_ddb_no_free:
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.
**/
static 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->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;
}
/**
* qla4_is_relogin_allowed - Are we allowed to login?
* @ha: Pointer to host adapter structure.
* @conn_err: Last connection error associated with the ddb
*
* This routine tests the given connection error to determine if
* we are allowed to login.
**/
int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err)
{
uint32_t err_code, login_rsp_sts_class;
int relogin = 1;
err_code = ((conn_err & 0x00ff0000) >> 16);
login_rsp_sts_class = ((conn_err & 0x0000ff00) >> 8);
if (err_code == 0x1c || err_code == 0x06) {
DEBUG2(ql4_printk(KERN_INFO, ha,
": conn_err=0x%08x, send target completed"
" or access denied failure\n", conn_err));
relogin = 0;
}
if ((err_code == 0x08) && (login_rsp_sts_class == 0x02)) {
/* Login Response PDU returned an error.
Login Response Status in Error Code Detail
indicates login should not be retried.*/
DEBUG2(ql4_printk(KERN_INFO, ha,
": conn_err=0x%08x, do not retry relogin\n",
conn_err));
relogin = 0;
}
return relogin;
}
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));
}
/**
* qla4xxx_build_ddb_list - 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.
* A relogin (set_ddb) is issued for DDBs that are not online.
**/
static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
{
int status = QLA_ERROR;
uint32_t fw_ddb_index = 0;
uint32_t next_fw_ddb_index = 0;
uint32_t ddb_state;
uint32_t conn_err;
struct ddb_entry *ddb_entry;
struct dev_db_entry *fw_ddb_entry = NULL;
dma_addr_t fw_ddb_entry_dma;
uint32_t ipv6_device;
uint32_t new_tgt;
qla4xxx_flush_AENS(ha);
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(ql4_printk(KERN_INFO, ha, "%s: DMA alloc failed\n",
__func__));
goto exit_build_ddb_list_no_free;
}
ql4_printk(KERN_INFO, ha, "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, fw_ddb_entry,
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));
goto exit_build_ddb_list;
}
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));
ipv6_device = le16_to_cpu(fw_ddb_entry->options) &
DDB_OPT_IPV6_DEVICE;
if (qla4_is_relogin_allowed(ha, conn_err) &&
((!ipv6_device &&
*((uint32_t *)fw_ddb_entry->ip_addr))
|| ipv6_device)) {
qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
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 %d failed\n",
ha->host_no,
__func__, fw_ddb_index));
goto exit_build_ddb_list;
}
}
}
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, &new_tgt);
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));
goto exit_build_ddb_list;
}
/* 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));
goto exit_build_ddb_list;
}
next_one:
/* We know we've reached the last device when
* next_fw_ddb_index is 0 */
if (next_fw_ddb_index == 0)
break;
}
status = QLA_SUCCESS;
ql4_printk(KERN_INFO, ha, "DDB list done..\n");
exit_build_ddb_list:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
fw_ddb_entry_dma);
exit_build_ddb_list_no_free:
return status;
}
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;
/* Perform device discovery and build ddb list. */
status = qla4xxx_build_ddb_list(ha);
return status;
}
/**
* qla4xxx_reinitialize_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));
iscsi_unblock_session(ddb_entry->sess);
} 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 ddb [%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;
}
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 */
ql4_printk(KERN_INFO, ha, "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 {
ql4_printk(KERN_WARNING, ha,
"scsi%ld: %s: EEProm checksum invalid. "
"Please update your EEPROM\n", ha->host_no,
__func__);
/* Attempt to set defaults */
if (is_qla4010(ha))
extHwConfig.Asuint32_t = 0x1912;
else if (is_qla4022(ha) | is_qla4032(ha))
extHwConfig.Asuint32_t = 0x0023;
else
return QLA_ERROR;
}
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;
}
/**
* qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
* @ha: HA context
*/
void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
{
pci_set_master(ha->pdev);
}
void qla4xxx_pci_config(struct scsi_qla_host *ha)
{
uint16_t w;
int status;
ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
pci_set_master(ha->pdev);
status = pci_set_mwi(ha->pdev);
/*
* 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 |= 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;
unsigned long max_wait_time;
unsigned long flags;
uint32_t mbox_status;
ql4_printk(KERN_INFO, ha, "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) | is_qla4032(ha))
writel(set_rmask(NVR_WRITE_ENABLE),
&ha->reg->u1.isp4022.nvram);
writel(2, &ha->reg->mailbox[6]);
readl(&ha->reg->mailbox[6]);
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. */
DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
"boot firmware to complete...\n",
ha->host_no, __func__, FIRMWARE_UP_TOV));
max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
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(KERN_INFO "scsi%ld: %s: Waiting for boot "
"firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
ha->host_no, __func__, ctrl_status, max_wait_time));
msleep_interruptible(250);
} while (!time_after_eq(jiffies, max_wait_time));
if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
DEBUG(printk(KERN_INFO "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;
}
int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
{
#define QL4_LOCK_DRVR_WAIT 60
#define QL4_LOCK_DRVR_SLEEP 1
int drvr_wait = QL4_LOCK_DRVR_WAIT;
while (drvr_wait) {
if (ql4xxx_lock_drvr(a) == 0) {
ssleep(QL4_LOCK_DRVR_SLEEP);
if (drvr_wait) {
DEBUG2(printk("scsi%ld: %s: Waiting for "
"Global Init Semaphore(%d)...\n",
a->host_no,
__func__, drvr_wait));
}
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 necessary steps to start the firmware for
* the QLA4010 adapter.
**/
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_qla4022(ha) | is_qla4032(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); /* NOTE: acquires drvr
* lock again, but ok */
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 acquire 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) {
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;
ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
ha->isp_ops->pci_config(ha);
ha->isp_ops->disable_intrs(ha);
/* Initialize the Host adapter request/response queues and firmware */
if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
goto exit_init_hba;
if (qla4xxx_get_fw_version(ha) == QLA_ERROR)
goto exit_init_hba;
if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
goto exit_init_hba;
if (qla4xxx_init_local_data(ha) == QLA_ERROR)
goto exit_init_hba;
status = qla4xxx_init_firmware(ha);
if (status == QLA_ERROR)
goto exit_init_hba;
/*
* 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_CONFIGURING_IP)
goto exit_init_online;
/* 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)
goto exit_init_online;
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_online:
set_bit(AF_ONLINE, &ha->flags);
exit_init_hba:
if (is_qla8022(ha) && (status == QLA_ERROR)) {
/* Since interrupts are registered in start_firmware for
* 82xx, release them here if initialize_adapter fails */
qla4xxx_free_irqs(ha);
}
DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
status == QLA_ERROR ? "FAILED" : "SUCCEDED"));
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;
uint32_t new_tgt;
/* First allocate a device structure */
ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
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 (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
/* Target has been bound to a new fw_ddb_index */
qla4xxx_free_ddb(ha, ddb_entry);
ddb_entry = qla4xxx_alloc_ddb(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, uint32_t conn_err)
{
struct ddb_entry * ddb_entry;
/* 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. */
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));
ddb_entry->fw_ddb_device_state = state;
/* Device is back online. */
if ((ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) &&
(atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)) {
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);
iscsi_unblock_session(ddb_entry->sess);
iscsi_session_event(ddb_entry->sess,
ISCSI_KEVENT_CREATE_SESSION);
/*
* Change the lun state to READY in case the lun TIMEOUT before
* the device came back.
*/
} else if (ddb_entry->fw_ddb_device_state != DDB_DS_SESSION_ACTIVE) {
/* Device went away, mark device missing */
if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
DEBUG2(ql4_printk(KERN_INFO, ha, "%s mark missing "
"ddb_entry 0x%p sess 0x%p conn 0x%p\n",
__func__, ddb_entry,
ddb_entry->sess, ddb_entry->conn));
qla4xxx_mark_device_missing(ha, ddb_entry);
}
/*
* Relogin if device state changed to a not active state.
* However, do not relogin if a RELOGIN is in process, or
* we are not allowed to relogin to this DDB.
*/
if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
!test_bit(DF_RELOGIN, &ddb_entry->flags) &&
qla4_is_relogin_allowed(ha, conn_err)) {
/*
* 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 pads 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);
DEBUG(printk("scsi%ld: %s: ddb[%d] "
"initiate relogin after %d seconds\n",
ha->host_no, __func__,
ddb_entry->fw_ddb_index,
ddb_entry->default_time2wait + 4));
} else {
DEBUG(printk("scsi%ld: %s: ddb[%d] "
"relogin not initiated, state = %d, "
"ddb_entry->flags = 0x%lx\n",
ha->host_no, __func__,
ddb_entry->fw_ddb_index,
ddb_entry->fw_ddb_device_state,
ddb_entry->flags));
}
}
return QLA_SUCCESS;
}
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