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linux-stable/drivers/scsi/qla4xxx/ql4_init.c
Karen Higgins 7edd9a7b28 [SCSI] qla4xxx: cleanup DDB relogin logic during initialization 
Driver has capability to add device dynamically and present
them to OS, driver no longer need to wait for DDBs to come
online during driver initialization.
Driver still issues a relogin for DDBs that are not online,
but no longer wait for DDB to come online.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Karen Higgins <karen.higgins@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-03-23 12:52:59 -05:00

1507 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;
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) {
if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
iscsi_unblock_session(ddb_entry->sess);
}
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->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_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 {
/* 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) &&
!test_bit(DF_NO_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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