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166dd20d79
linux/drivers/scsi/qla4xxx/ql4_init.c
Lalit Chandivade 166dd20d79 [SCSI] qla4xxx: Free Device Database (DDB) reserved by FW 
Firmware reserves DDBs if there are entries in the FLASH.
So there are no free DDBs left when a iSCSI login is initiated
by user space tool like iscsiadm.
Since now login is not controlled by firmware, LLD need to free
up the DDBs after firmware init. This will ensure free DDBs are
available for iSCSI logins using iscsiadm.

JIRA Key: UPSISCSI-151

Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-10-16 11:09:49 -05:00

933 lines
26 KiB
C
Raw Blame History

/*
* 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 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 marks a DDB entry INVALID
**/
void qla4xxx_free_ddb(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry)
{
/* 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--;
}
/**
* 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->ip_config.ipv6_addl_options &
IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
((ha->ip_config.ipv6_link_local_state ==
IP_ADDRSTATE_ACQUIRING) ||
(ha->ip_config.ipv6_addr0_state ==
IP_ADDRSTATE_ACQUIRING) ||
(ha->ip_config.ipv6_addr1_state ==
IP_ADDRSTATE_ACQUIRING))) {
ipv6_wait = 1;
if ((ha->ip_config.ipv6_link_local_state ==
IP_ADDRSTATE_PREFERRED) ||
(ha->ip_config.ipv6_addr0_state ==
IP_ADDRSTATE_PREFERRED) ||
(ha->ip_config.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->ip_config.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->ip_config.ipv6_default_router_state ==
IPV6_RTRSTATE_MANUAL) &&
(ha->ip_config.ipv6_link_local_state ==
IP_ADDRSTATE_TENTATIVE) &&
(memcmp(&ha->ip_config.ipv6_link_local_addr,
&ha->ip_config.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->ip_config.ipv6_link_local_state ==
IP_ADDRSTATE_ACQUIRING)
DEBUG2(printk("IPv6LinkLocal "));
if (ha->ip_config.ipv6_addr0_state ==
IP_ADDRSTATE_ACQUIRING)
DEBUG2(printk("IPv6Addr0 "));
if (ha->ip_config.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 void qla4xxx_set_model_info(struct scsi_qla_host *ha)
{
uint16_t board_id_string[8];
int i;
int size = sizeof(ha->nvram->isp4022.boardIdStr);
int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
for (i = 0; i < (size / 2) ; i++) {
board_id_string[i] = rd_nvram_word(ha, offset);
offset += 1;
}
memcpy(ha->model_name, board_id_string, size);
}
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;
}
if (is_qla4022(ha) || is_qla4032(ha))
qla4xxx_set_model_info(ha);
else
strcpy(ha->model_name, "QLA4010");
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_free_ddb_index - Free DDBs reserved by firmware
* @ha: pointer to adapter structure
*
* Since firmware is not running in autoconnect mode the DDB indices should
* be freed so that when login happens from user space there are free DDB
* indices available.
**/
static void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
{
int max_ddbs;
int ret;
uint32_t idx = 0, next_idx = 0;
uint32_t state = 0, conn_err = 0;
max_ddbs = is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
MAX_DEV_DB_ENTRIES;
for (idx = 0; idx < max_ddbs; idx = next_idx) {
ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
&next_idx, &state, &conn_err,
NULL, NULL);
if (ret == QLA_ERROR)
continue;
if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
state == DDB_DS_SESSION_FAILED) {
DEBUG2(ql4_printk(KERN_INFO, ha,
"Freeing DDB index = 0x%x\n", idx));
ret = qla4xxx_clear_ddb_entry(ha, idx);
if (ret == QLA_ERROR)
ql4_printk(KERN_ERR, ha,
"Unable to clear DDB index = "
"0x%x\n", idx);
}
if (next_idx == 0)
break;
}
}
/**
* qla4xxx_initialize_adapter - initiailizes hba
* @ha: Pointer to host adapter structure.
*
* This routine parforms all of the steps necessary to initialize the adapter.
*
**/
int qla4xxx_initialize_adapter(struct scsi_qla_host *ha)
{
int status = QLA_ERROR;
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_about_firmware(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;
qla4xxx_free_ddb_index(ha);
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" : "SUCCEEDED"));
return status;
}
/**
* 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;
int status = QLA_ERROR;
/* check for out of range index */
if (fw_ddb_index >= MAX_DDB_ENTRIES)
goto exit_ddb_event;
/* 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) {
ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
__func__, fw_ddb_index);
goto exit_ddb_event;
}
old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
DEBUG2(ql4_printk(KERN_INFO, ha,
"%s: DDB - old state = 0x%x, new state = 0x%x for "
"index [%d]\n", __func__,
ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
ddb_entry->fw_ddb_device_state = state;
switch (old_fw_ddb_device_state) {
case DDB_DS_LOGIN_IN_PROCESS:
switch (state) {
case DDB_DS_SESSION_ACTIVE:
case DDB_DS_DISCOVERY:
iscsi_conn_login_event(ddb_entry->conn,
ISCSI_CONN_STATE_LOGGED_IN);
qla4xxx_update_session_conn_param(ha, ddb_entry);
status = QLA_SUCCESS;
break;
case DDB_DS_SESSION_FAILED:
case DDB_DS_NO_CONNECTION_ACTIVE:
iscsi_conn_login_event(ddb_entry->conn,
ISCSI_CONN_STATE_FREE);
status = QLA_SUCCESS;
break;
}
break;
case DDB_DS_SESSION_ACTIVE:
if (state == DDB_DS_SESSION_FAILED) {
/*
* iscsi_session failure will cause userspace to
* stop the connection which in turn would block the
* iscsi_session and start relogin
*/
iscsi_session_failure(ddb_entry->sess->dd_data,
ISCSI_ERR_CONN_FAILED);
status = QLA_SUCCESS;
}
break;
default:
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
__func__));
break;
}
exit_ddb_event:
return status;
}
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