ql4_init.c

Go to the documentation of this file.

/*
 * QLogic iSCSI HBA Driver
 * Copyright (c)  2003-2012 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));
}

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--;
}

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++;
    }
}

int qla4xxx_init_rings(struct scsi_qla_host *ha)
{
    unsigned long flags = 0;
    int i;

    /* 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_82xx_reg->req_q_out);
        writel(0,
            (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_in);
        writel(0,
            (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_out);
    } else if (is_qla8032(ha)) {
        writel(0,
               (unsigned long __iomem *)&ha->qla4_83xx_reg->req_q_in);
        writel(0,
               (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_in);
        writel(0,
               (unsigned long __iomem *)&ha->qla4_83xx_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);

    /* Initialize mailbox active array */
    for (i = 0; i < MAX_MRB; i++)
        ha->active_mrb_array[i] = NULL;

    spin_unlock_irqrestore(&ha->hardware_lock, flags);

    return QLA_SUCCESS;
}

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;
}

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;
}

void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
{
    int status;
    uint32_t capture_debug_level;
    int hdr_entry_bit, k;
    void *md_tmp;
    dma_addr_t md_tmp_dma;
    struct qla4_8xxx_minidump_template_hdr *md_hdr;

    if (ha->fw_dump) {
        ql4_printk(KERN_WARNING, ha,
               "Firmware dump previously allocated.\n");
        return;
    }

    status = qla4xxx_req_template_size(ha);
    if (status != QLA_SUCCESS) {
        ql4_printk(KERN_INFO, ha,
               "scsi%ld: Failed to get template size\n",
               ha->host_no);
        return;
    }

    clear_bit(AF_82XX_FW_DUMPED, &ha->flags);

    /* Allocate memory for saving the template */
    md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
                    &md_tmp_dma, GFP_KERNEL);

    /* Request template */
    status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
    if (status != QLA_SUCCESS) {
        ql4_printk(KERN_INFO, ha,
               "scsi%ld: Failed to get minidump template\n",
               ha->host_no);
        goto alloc_cleanup;
    }

    md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;

    capture_debug_level = md_hdr->capture_debug_level;

    /* Get capture mask based on module loadtime setting. */
    if (ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F)
        ha->fw_dump_capture_mask = ql4xmdcapmask;
    else
        ha->fw_dump_capture_mask = capture_debug_level;

    md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;

    DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
              md_hdr->num_of_entries));
    DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
              ha->fw_dump_tmplt_size));
    DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
              ha->fw_dump_capture_mask));

    /* Calculate fw_dump_size */
    for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
         hdr_entry_bit <<= 1, k++) {
        if (hdr_entry_bit & ha->fw_dump_capture_mask)
            ha->fw_dump_size += md_hdr->capture_size_array[k];
    }

    /* Total firmware dump size including command header */
    ha->fw_dump_size += ha->fw_dump_tmplt_size;
    ha->fw_dump = vmalloc(ha->fw_dump_size);
    if (!ha->fw_dump)
        goto alloc_cleanup;

    DEBUG2(ql4_printk(KERN_INFO, ha,
              "Minidump Tempalate Size = 0x%x KB\n",
              ha->fw_dump_tmplt_size));
    DEBUG2(ql4_printk(KERN_INFO, ha,
              "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));

    memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
    ha->fw_dump_tmplt_hdr = ha->fw_dump;

alloc_cleanup:
    dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
              md_tmp, md_tmp_dma);
}

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;
}

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_qla80XX(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;

    if (is_qla80XX(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
        qla4xxx_alloc_fw_dump(ha);

    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;
}

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;
}

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);
            writel(set_rmask(CSR_SCSI_COMPLETION_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;
}
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_DEV_DB_ENTRIES_40XX :
                     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) {
            next_idx++;
            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;
    }
}

int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
{
    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;

    if (is_reset == RESET_ADAPTER)
        qla4xxx_build_ddb_list(ha, is_reset);

    set_bit(AF_ONLINE, &ha->flags);
exit_init_hba:
    if (is_qla80XX(ha) && (status == QLA_ERROR)) {
        /* Since interrupts are registered in start_firmware for
         * 80XX, 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;
}

int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
               struct ddb_entry *ddb_entry, uint32_t state)
{
    uint32_t old_fw_ddb_device_state;
    int status = QLA_ERROR;

    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:
            qla4xxx_update_session_conn_param(ha, ddb_entry);
            ddb_entry->unblock_sess(ddb_entry->sess);
            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:
    case DDB_DS_DISCOVERY:
        switch (state) {
        case 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;
        case DDB_DS_NO_CONNECTION_ACTIVE:
            clear_bit(fw_ddb_index, ha->ddb_idx_map);
            status = QLA_SUCCESS;
            break;
        }
        break;
    case DDB_DS_SESSION_FAILED:
        switch (state) {
        case DDB_DS_SESSION_ACTIVE:
        case DDB_DS_DISCOVERY:
            ddb_entry->unblock_sess(ddb_entry->sess);
            qla4xxx_update_session_conn_param(ha, ddb_entry);
            status = QLA_SUCCESS;
            break;
        case DDB_DS_SESSION_FAILED:
            iscsi_session_failure(ddb_entry->sess->dd_data,
                          ISCSI_ERR_CONN_FAILED);
            status = QLA_SUCCESS;
            break;
        }
        break;
    default:
        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
                __func__));
        break;
    }
    return status;
}

void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
{
    /*
     * 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);

}

int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
                 struct ddb_entry *ddb_entry, uint32_t state)
{
    uint32_t old_fw_ddb_device_state;
    int status = QLA_ERROR;

    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:
    case DDB_DS_NO_CONNECTION_ACTIVE:
        switch (state) {
        case DDB_DS_SESSION_ACTIVE:
            ddb_entry->unblock_sess(ddb_entry->sess);
            qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
            status = QLA_SUCCESS;
            break;
        case DDB_DS_SESSION_FAILED:
            iscsi_block_session(ddb_entry->sess);
            if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
                qla4xxx_arm_relogin_timer(ddb_entry);
            status = QLA_SUCCESS;
            break;
        }
        break;
    case DDB_DS_SESSION_ACTIVE:
        switch (state) {
        case DDB_DS_SESSION_FAILED:
            iscsi_block_session(ddb_entry->sess);
            if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
                qla4xxx_arm_relogin_timer(ddb_entry);
            status = QLA_SUCCESS;
            break;
        }
        break;
    case DDB_DS_SESSION_FAILED:
        switch (state) {
        case DDB_DS_SESSION_ACTIVE:
            ddb_entry->unblock_sess(ddb_entry->sess);
            qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
            status = QLA_SUCCESS;
            break;
        case DDB_DS_SESSION_FAILED:
            if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
                qla4xxx_arm_relogin_timer(ddb_entry);
            status = QLA_SUCCESS;
            break;
        }
        break;
    default:
        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
                  __func__));
        break;
    }
    return status;
}

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;
    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);

        if (state == DDB_DS_NO_CONNECTION_ACTIVE)
            clear_bit(fw_ddb_index, ha->ddb_idx_map);

        goto exit_ddb_event;
    }

    ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);

exit_ddb_event:
    return status;
}

void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
{
    struct iscsi_session *sess;
    struct ddb_entry *ddb_entry;
    struct scsi_qla_host *ha;
    struct dev_db_entry *fw_ddb_entry = NULL;
    dma_addr_t fw_ddb_dma;
    uint32_t mbx_sts = 0;
    int ret;

    sess = cls_session->dd_data;
    ddb_entry = sess->dd_data;
    ha =  ddb_entry->ha;

    if (!test_bit(AF_LINK_UP, &ha->flags))
        return;

    if (ddb_entry->ddb_type != FLASH_DDB) {
        DEBUG2(ql4_printk(KERN_INFO, ha,
                  "Skipping login to non FLASH DB"));
        goto exit_login;
    }

    fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
                      &fw_ddb_dma);
    if (fw_ddb_entry == NULL) {
        DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
        goto exit_login;
    }

    if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
        ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
        if (ret == QLA_ERROR)
            goto exit_login;

        ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
        ha->tot_ddbs++;
    }

    memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
           sizeof(struct dev_db_entry));
    ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;

    ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
                    fw_ddb_dma, &mbx_sts);
    if (ret == QLA_ERROR) {
        DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
        goto exit_login;
    }

    ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
    ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
    if (ret == QLA_ERROR) {
        ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
               sess->targetname);
        goto exit_login;
    }

exit_login:
    if (fw_ddb_entry)
        dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
}