/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"
#include "qla_target.h"

#include <linux/delay.h>
#include <linux/gfp.h>

static struct mb_cmd_name {
        uint16_t cmd;
        const char *str;
} mb_str[] = {
        {MBC_GET_PORT_DATABASE,         "GPDB"},
        {MBC_GET_ID_LIST,               "GIDList"},
        {MBC_GET_LINK_PRIV_STATS,       "Stats"},
        {MBC_GET_RESOURCE_COUNTS,       "ResCnt"},
};

static const char *mb_to_str(uint16_t cmd)
{
        int i;
        struct mb_cmd_name *e;

        for (i = 0; i < ARRAY_SIZE(mb_str); i++) {
                e = mb_str + i;
                if (cmd == e->cmd)
                        return e->str;
        }
        return "unknown";
}

static struct rom_cmd {
        uint16_t cmd;
} rom_cmds[] = {
        { MBC_LOAD_RAM },
        { MBC_EXECUTE_FIRMWARE },
        { MBC_READ_RAM_WORD },
        { MBC_MAILBOX_REGISTER_TEST },
        { MBC_VERIFY_CHECKSUM },
        { MBC_GET_FIRMWARE_VERSION },
        { MBC_LOAD_RISC_RAM },
        { MBC_DUMP_RISC_RAM },
        { MBC_LOAD_RISC_RAM_EXTENDED },
        { MBC_DUMP_RISC_RAM_EXTENDED },
        { MBC_WRITE_RAM_WORD_EXTENDED },
        { MBC_READ_RAM_EXTENDED },
        { MBC_GET_RESOURCE_COUNTS },
        { MBC_SET_FIRMWARE_OPTION },
        { MBC_MID_INITIALIZE_FIRMWARE },
        { MBC_GET_FIRMWARE_STATE },
        { MBC_GET_MEM_OFFLOAD_CNTRL_STAT },
        { MBC_GET_RETRY_COUNT },
        { MBC_TRACE_CONTROL },
        { MBC_INITIALIZE_MULTIQ },
        { MBC_IOCB_COMMAND_A64 },
        { MBC_GET_ADAPTER_LOOP_ID },
        { MBC_READ_SFP },
};

static int is_rom_cmd(uint16_t cmd)
{
        int i;
        struct  rom_cmd *wc;

        for (i = 0; i < ARRAY_SIZE(rom_cmds); i++) {
                wc = rom_cmds + i;
                if (wc->cmd == cmd)
                        return 1;
        }

        return 0;
}

/*
 * qla2x00_mailbox_command
 *      Issue mailbox command and waits for completion.
 *
 * Input:
 *      ha = adapter block pointer.
 *      mcp = driver internal mbx struct pointer.
 *
 * Output:
 *      mb[MAX_MAILBOX_REGISTER_COUNT] = returned mailbox data.
 *
 * Returns:
 *      0 : QLA_SUCCESS = cmd performed success
 *      1 : QLA_FUNCTION_FAILED   (error encountered)
 *      6 : QLA_FUNCTION_TIMEOUT (timeout condition encountered)
 *
 * Context:
 *      Kernel context.
 */
static int
qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
{
        int             rval, i;
        unsigned long    flags = 0;
        device_reg_t *reg;
        uint8_t         abort_active;
        uint8_t         io_lock_on;
        uint16_t        command = 0;
        uint16_t        *iptr;
        uint16_t __iomem *optr;
        uint32_t        cnt;
        uint32_t        mboxes;
        unsigned long   wait_time;
        struct qla_hw_data *ha = vha->hw;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);


        ql_dbg(ql_dbg_mbx, vha, 0x1000, "Entered %s.\n", __func__);

        if (ha->pdev->error_state > pci_channel_io_frozen) {
                ql_log(ql_log_warn, vha, 0x1001,
                    "error_state is greater than pci_channel_io_frozen, "
                    "exiting.\n");
                return QLA_FUNCTION_TIMEOUT;
        }

        if (vha->device_flags & DFLG_DEV_FAILED) {
                ql_log(ql_log_warn, vha, 0x1002,
                    "Device in failed state, exiting.\n");
                return QLA_FUNCTION_TIMEOUT;
        }

        /* if PCI error, then avoid mbx processing.*/
        if (test_bit(PFLG_DISCONNECTED, &base_vha->dpc_flags) &&
            test_bit(UNLOADING, &base_vha->dpc_flags)) {
                ql_log(ql_log_warn, vha, 0xd04e,
                    "PCI error, exiting.\n");
                return QLA_FUNCTION_TIMEOUT;
        }

        reg = ha->iobase;
        io_lock_on = base_vha->flags.init_done;

        rval = QLA_SUCCESS;
        abort_active = test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);


        if (ha->flags.pci_channel_io_perm_failure) {
                ql_log(ql_log_warn, vha, 0x1003,
                    "Perm failure on EEH timeout MBX, exiting.\n");
                return QLA_FUNCTION_TIMEOUT;
        }

        if (IS_P3P_TYPE(ha) && ha->flags.isp82xx_fw_hung) {
                /* Setting Link-Down error */
                mcp->mb[0] = MBS_LINK_DOWN_ERROR;
                ql_log(ql_log_warn, vha, 0x1004,
                    "FW hung = %d.\n", ha->flags.isp82xx_fw_hung);
                return QLA_FUNCTION_TIMEOUT;
        }

        /* check if ISP abort is active and return cmd with timeout */
        if ((test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
            test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
            test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) &&
            !is_rom_cmd(mcp->mb[0])) {
                ql_log(ql_log_info, vha, 0x1005,
                    "Cmd 0x%x aborted with timeout since ISP Abort is pending\n",
                    mcp->mb[0]);
                return QLA_FUNCTION_TIMEOUT;
        }

        /*
         * Wait for active mailbox commands to finish by waiting at most tov
         * seconds. This is to serialize actual issuing of mailbox cmds during
         * non ISP abort time.
         */
        if (!wait_for_completion_timeout(&ha->mbx_cmd_comp, mcp->tov * HZ)) {
                /* Timeout occurred. Return error. */
                ql_log(ql_log_warn, vha, 0xd035,
                    "Cmd access timeout, cmd=0x%x, Exiting.\n",
                    mcp->mb[0]);
                return QLA_FUNCTION_TIMEOUT;
        }

        ha->flags.mbox_busy = 1;
        /* Save mailbox command for debug */
        ha->mcp = mcp;

        ql_dbg(ql_dbg_mbx, vha, 0x1006,
            "Prepare to issue mbox cmd=0x%x.\n", mcp->mb[0]);

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Load mailbox registers. */
        if (IS_P3P_TYPE(ha))
                optr = (uint16_t __iomem *)&reg->isp82.mailbox_in[0];
        else if (IS_FWI2_CAPABLE(ha) && !(IS_P3P_TYPE(ha)))
                optr = (uint16_t __iomem *)&reg->isp24.mailbox0;
        else
                optr = (uint16_t __iomem *)MAILBOX_REG(ha, &reg->isp, 0);

        iptr = mcp->mb;
        command = mcp->mb[0];
        mboxes = mcp->out_mb;

        ql_dbg(ql_dbg_mbx, vha, 0x1111,
            "Mailbox registers (OUT):\n");
        for (cnt = 0; cnt < ha->mbx_count; cnt++) {
                if (IS_QLA2200(ha) && cnt == 8)
                        optr =
                            (uint16_t __iomem *)MAILBOX_REG(ha, &reg->isp, 8);
                if (mboxes & BIT_0) {
                        ql_dbg(ql_dbg_mbx, vha, 0x1112,
                            "mbox[%d]<-0x%04x\n", cnt, *iptr);
                        WRT_REG_WORD(optr, *iptr);
                }

                mboxes >>= 1;
                optr++;
                iptr++;
        }

        ql_dbg(ql_dbg_mbx + ql_dbg_buffer, vha, 0x1117,
            "I/O Address = %p.\n", optr);

        /* Issue set host interrupt command to send cmd out. */
        ha->flags.mbox_int = 0;
        clear_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);

        /* Unlock mbx registers and wait for interrupt */
        ql_dbg(ql_dbg_mbx, vha, 0x100f,
            "Going to unlock irq & waiting for interrupts. "
            "jiffies=%lx.\n", jiffies);

        /* Wait for mbx cmd completion until timeout */

        if ((!abort_active && io_lock_on) || IS_NOPOLLING_TYPE(ha)) {
                set_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);

                if (IS_P3P_TYPE(ha)) {
                        if (RD_REG_DWORD(&reg->isp82.hint) &
                                HINT_MBX_INT_PENDING) {
                                spin_unlock_irqrestore(&ha->hardware_lock,
                                        flags);
                                ha->flags.mbox_busy = 0;
                                ql_dbg(ql_dbg_mbx, vha, 0x1010,
                                    "Pending mailbox timeout, exiting.\n");
                                rval = QLA_FUNCTION_TIMEOUT;
                                goto premature_exit;
                        }
                        WRT_REG_DWORD(&reg->isp82.hint, HINT_MBX_INT_PENDING);
                } else if (IS_FWI2_CAPABLE(ha))
                        WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_SET_HOST_INT);
                else
                        WRT_REG_WORD(&reg->isp.hccr, HCCR_SET_HOST_INT);
                spin_unlock_irqrestore(&ha->hardware_lock, flags);

                wait_time = jiffies;
                if (!wait_for_completion_timeout(&ha->mbx_intr_comp,
                    mcp->tov * HZ)) {
                        ql_dbg(ql_dbg_mbx, vha, 0x117a,
                            "cmd=%x Timeout.\n", command);
                        spin_lock_irqsave(&ha->hardware_lock, flags);
                        clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
                        spin_unlock_irqrestore(&ha->hardware_lock, flags);
                }
                if (time_after(jiffies, wait_time + 5 * HZ))
                        ql_log(ql_log_warn, vha, 0x1015, "cmd=0x%x, waited %d msecs\n",
                            command, jiffies_to_msecs(jiffies - wait_time));
        } else {
                ql_dbg(ql_dbg_mbx, vha, 0x1011,
                    "Cmd=%x Polling Mode.\n", command);

                if (IS_P3P_TYPE(ha)) {
                        if (RD_REG_DWORD(&reg->isp82.hint) &
                                HINT_MBX_INT_PENDING) {
                                spin_unlock_irqrestore(&ha->hardware_lock,
                                        flags);
                                ha->flags.mbox_busy = 0;
                                ql_dbg(ql_dbg_mbx, vha, 0x1012,
                                    "Pending mailbox timeout, exiting.\n");
                                rval = QLA_FUNCTION_TIMEOUT;
                                goto premature_exit;
                        }
                        WRT_REG_DWORD(&reg->isp82.hint, HINT_MBX_INT_PENDING);
                } else if (IS_FWI2_CAPABLE(ha))
                        WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_SET_HOST_INT);
                else
                        WRT_REG_WORD(&reg->isp.hccr, HCCR_SET_HOST_INT);
                spin_unlock_irqrestore(&ha->hardware_lock, flags);

                wait_time = jiffies + mcp->tov * HZ; /* wait at most tov secs */
                while (!ha->flags.mbox_int) {
                        if (time_after(jiffies, wait_time))
                                break;

                        /* Check for pending interrupts. */
                        qla2x00_poll(ha->rsp_q_map[0]);

                        if (!ha->flags.mbox_int &&
                            !(IS_QLA2200(ha) &&
                            command == MBC_LOAD_RISC_RAM_EXTENDED))
                                msleep(10);
                } /* while */
                ql_dbg(ql_dbg_mbx, vha, 0x1013,
                    "Waited %d sec.\n",
                    (uint)((jiffies - (wait_time - (mcp->tov * HZ)))/HZ));
        }

        /* Check whether we timed out */
        if (ha->flags.mbox_int) {
                uint16_t *iptr2;

                ql_dbg(ql_dbg_mbx, vha, 0x1014,
                    "Cmd=%x completed.\n", command);

                /* Got interrupt. Clear the flag. */
                ha->flags.mbox_int = 0;
                clear_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);

                if (IS_P3P_TYPE(ha) && ha->flags.isp82xx_fw_hung) {
                        ha->flags.mbox_busy = 0;
                        /* Setting Link-Down error */
                        mcp->mb[0] = MBS_LINK_DOWN_ERROR;
                        ha->mcp = NULL;
                        rval = QLA_FUNCTION_FAILED;
                        ql_log(ql_log_warn, vha, 0xd048,
                            "FW hung = %d.\n", ha->flags.isp82xx_fw_hung);
                        goto premature_exit;
                }

                if (ha->mailbox_out[0] != MBS_COMMAND_COMPLETE)
                        rval = QLA_FUNCTION_FAILED;

                /* Load return mailbox registers. */
                iptr2 = mcp->mb;
                iptr = (uint16_t *)&ha->mailbox_out[0];
                mboxes = mcp->in_mb;

                ql_dbg(ql_dbg_mbx, vha, 0x1113,
                    "Mailbox registers (IN):\n");
                for (cnt = 0; cnt < ha->mbx_count; cnt++) {
                        if (mboxes & BIT_0) {
                                *iptr2 = *iptr;
                                ql_dbg(ql_dbg_mbx, vha, 0x1114,
                                    "mbox[%d]->0x%04x\n", cnt, *iptr2);
                        }

                        mboxes >>= 1;
                        iptr2++;
                        iptr++;
                }
        } else {

                uint16_t mb[8];
                uint32_t ictrl, host_status, hccr;
                uint16_t        w;

                if (IS_FWI2_CAPABLE(ha)) {
                        mb[0] = RD_REG_WORD(&reg->isp24.mailbox0);
                        mb[1] = RD_REG_WORD(&reg->isp24.mailbox1);
                        mb[2] = RD_REG_WORD(&reg->isp24.mailbox2);
                        mb[3] = RD_REG_WORD(&reg->isp24.mailbox3);
                        mb[7] = RD_REG_WORD(&reg->isp24.mailbox7);
                        ictrl = RD_REG_DWORD(&reg->isp24.ictrl);
                        host_status = RD_REG_DWORD(&reg->isp24.host_status);
                        hccr = RD_REG_DWORD(&reg->isp24.hccr);

                        ql_log(ql_log_warn, vha, 0xd04c,
                            "MBX Command timeout for cmd %x, iocontrol=%x jiffies=%lx "
                            "mb[0-3]=[0x%x 0x%x 0x%x 0x%x] mb7 0x%x host_status 0x%x hccr 0x%x\n",
                            command, ictrl, jiffies, mb[0], mb[1], mb[2], mb[3],
                            mb[7], host_status, hccr);

                } else {
                        mb[0] = RD_MAILBOX_REG(ha, &reg->isp, 0);
                        ictrl = RD_REG_WORD(&reg->isp.ictrl);
                        ql_dbg(ql_dbg_mbx + ql_dbg_buffer, vha, 0x1119,
                            "MBX Command timeout for cmd %x, iocontrol=%x jiffies=%lx "
                            "mb[0]=0x%x\n", command, ictrl, jiffies, mb[0]);
                }
                ql_dump_regs(ql_dbg_mbx + ql_dbg_buffer, vha, 0x1019);

                /* Capture FW dump only, if PCI device active */
                if (!pci_channel_offline(vha->hw->pdev)) {
                        pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
                        if (w == 0xffff || ictrl == 0xffffffff) {
                                /* This is special case if there is unload
                                 * of driver happening and if PCI device go
                                 * into bad state due to PCI error condition
                                 * then only PCI ERR flag would be set.
                                 * we will do premature exit for above case.
                                 */
                                ha->flags.mbox_busy = 0;
                                rval = QLA_FUNCTION_TIMEOUT;
                                goto premature_exit;
                        }

                        /* Attempt to capture firmware dump for further
                         * anallysis of the current formware state. we do not
                         * need to do this if we are intentionally generating
                         * a dump
                         */
                        if (mcp->mb[0] != MBC_GEN_SYSTEM_ERROR)
                                ha->isp_ops->fw_dump(vha, 0);
                        rval = QLA_FUNCTION_TIMEOUT;
                 }
        }

        ha->flags.mbox_busy = 0;

        /* Clean up */
        ha->mcp = NULL;

        if ((abort_active || !io_lock_on) && !IS_NOPOLLING_TYPE(ha)) {
                ql_dbg(ql_dbg_mbx, vha, 0x101a,
                    "Checking for additional resp interrupt.\n");

                /* polling mode for non isp_abort commands. */
                qla2x00_poll(ha->rsp_q_map[0]);
        }

        if (rval == QLA_FUNCTION_TIMEOUT &&
            mcp->mb[0] != MBC_GEN_SYSTEM_ERROR) {
                if (!io_lock_on || (mcp->flags & IOCTL_CMD) ||
                    ha->flags.eeh_busy) {
                        /* not in dpc. schedule it for dpc to take over. */
                        ql_dbg(ql_dbg_mbx, vha, 0x101b,
                            "Timeout, schedule isp_abort_needed.\n");

                        if (!test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) &&
                            !test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) &&
                            !test_bit(ISP_ABORT_RETRY, &vha->dpc_flags)) {
                                if (IS_QLA82XX(ha)) {
                                        ql_dbg(ql_dbg_mbx, vha, 0x112a,
                                            "disabling pause transmit on port "
                                            "0 & 1.\n");
                                        qla82xx_wr_32(ha,
                                            QLA82XX_CRB_NIU + 0x98,
                                            CRB_NIU_XG_PAUSE_CTL_P0|
                                            CRB_NIU_XG_PAUSE_CTL_P1);
                                }
                                ql_log(ql_log_info, base_vha, 0x101c,
                                    "Mailbox cmd timeout occurred, cmd=0x%x, "
                                    "mb[0]=0x%x, eeh_busy=0x%x. Scheduling ISP "
                                    "abort.\n", command, mcp->mb[0],
                                    ha->flags.eeh_busy);
                                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                                qla2xxx_wake_dpc(vha);
                        }
                } else if (!abort_active) {
                        /* call abort directly since we are in the DPC thread */
                        ql_dbg(ql_dbg_mbx, vha, 0x101d,
                            "Timeout, calling abort_isp.\n");

                        if (!test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) &&
                            !test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) &&
                            !test_bit(ISP_ABORT_RETRY, &vha->dpc_flags)) {
                                if (IS_QLA82XX(ha)) {
                                        ql_dbg(ql_dbg_mbx, vha, 0x112b,
                                            "disabling pause transmit on port "
                                            "0 & 1.\n");
                                        qla82xx_wr_32(ha,
                                            QLA82XX_CRB_NIU + 0x98,
                                            CRB_NIU_XG_PAUSE_CTL_P0|
                                            CRB_NIU_XG_PAUSE_CTL_P1);
                                }
                                ql_log(ql_log_info, base_vha, 0x101e,
                                    "Mailbox cmd timeout occurred, cmd=0x%x, "
                                    "mb[0]=0x%x. Scheduling ISP abort ",
                                    command, mcp->mb[0]);
                                set_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
                                clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                                /* Allow next mbx cmd to come in. */
                                complete(&ha->mbx_cmd_comp);
                                if (ha->isp_ops->abort_isp(vha)) {
                                        /* Failed. retry later. */
                                        set_bit(ISP_ABORT_NEEDED,
                                            &vha->dpc_flags);
                                }
                                clear_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
                                ql_dbg(ql_dbg_mbx, vha, 0x101f,
                                    "Finished abort_isp.\n");
                                goto mbx_done;
                        }
                }
        }

premature_exit:
        /* Allow next mbx cmd to come in. */
        complete(&ha->mbx_cmd_comp);

mbx_done:
        if (rval) {
                if (ql2xextended_error_logging & (ql_dbg_disc|ql_dbg_mbx)) {
                        pr_warn("%s [%s]-%04x:%ld: **** Failed", QL_MSGHDR,
                            dev_name(&ha->pdev->dev), 0x1020+0x800,
                            vha->host_no);
                        mboxes = mcp->in_mb;
                        cnt = 4;
                        for (i = 0; i < ha->mbx_count && cnt; i++, mboxes >>= 1)
                                if (mboxes & BIT_0) {
                                        printk(" mb[%u]=%x", i, mcp->mb[i]);
                                        cnt--;
                                }
                        pr_warn(" cmd=%x ****\n", command);
                }
                ql_dbg(ql_dbg_mbx, vha, 0x1198,
                    "host_status=%#x intr_ctrl=%#x intr_status=%#x\n",
                    RD_REG_DWORD(&reg->isp24.host_status),
                    RD_REG_DWORD(&reg->isp24.ictrl),
                    RD_REG_DWORD(&reg->isp24.istatus));
        } else {
                ql_dbg(ql_dbg_mbx, base_vha, 0x1021, "Done %s.\n", __func__);
        }

        return rval;
}

int
qla2x00_load_ram(scsi_qla_host_t *vha, dma_addr_t req_dma, uint32_t risc_addr,
    uint32_t risc_code_size)
{
        int rval;
        struct qla_hw_data *ha = vha->hw;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1022,
            "Entered %s.\n", __func__);

        if (MSW(risc_addr) || IS_FWI2_CAPABLE(ha)) {
                mcp->mb[0] = MBC_LOAD_RISC_RAM_EXTENDED;
                mcp->mb[8] = MSW(risc_addr);
                mcp->out_mb = MBX_8|MBX_0;
        } else {
                mcp->mb[0] = MBC_LOAD_RISC_RAM;
                mcp->out_mb = MBX_0;
        }
        mcp->mb[1] = LSW(risc_addr);
        mcp->mb[2] = MSW(req_dma);
        mcp->mb[3] = LSW(req_dma);
        mcp->mb[6] = MSW(MSD(req_dma));
        mcp->mb[7] = LSW(MSD(req_dma));
        mcp->out_mb |= MBX_7|MBX_6|MBX_3|MBX_2|MBX_1;
        if (IS_FWI2_CAPABLE(ha)) {
                mcp->mb[4] = MSW(risc_code_size);
                mcp->mb[5] = LSW(risc_code_size);
                mcp->out_mb |= MBX_5|MBX_4;
        } else {
                mcp->mb[4] = LSW(risc_code_size);
                mcp->out_mb |= MBX_4;
        }

        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1023,
                    "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1024,
                    "Done %s.\n", __func__);
        }

        return rval;
}

#define EXTENDED_BB_CREDITS     BIT_0
#define NVME_ENABLE_FLAG        BIT_3
static inline uint16_t qla25xx_set_sfp_lr_dist(struct qla_hw_data *ha)
{
        uint16_t mb4 = BIT_0;

        if (IS_QLA83XX(ha) || IS_QLA27XX(ha))
                mb4 |= ha->long_range_distance << LR_DIST_FW_POS;

        return mb4;
}

static inline uint16_t qla25xx_set_nvr_lr_dist(struct qla_hw_data *ha)
{
        uint16_t mb4 = BIT_0;

        if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
                struct nvram_81xx *nv = ha->nvram;

                mb4 |= LR_DIST_FW_FIELD(nv->enhanced_features);
        }

        return mb4;
}

/*
 * qla2x00_execute_fw
 *     Start adapter firmware.
 *
 * Input:
 *     ha = adapter block pointer.
 *     TARGET_QUEUE_LOCK must be released.
 *     ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *     qla2x00 local function return status code.
 *
 * Context:
 *     Kernel context.
 */
int
qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
{
        int rval;
        struct qla_hw_data *ha = vha->hw;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1025,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_EXECUTE_FIRMWARE;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_0;
        if (IS_FWI2_CAPABLE(ha)) {
                mcp->mb[1] = MSW(risc_addr);
                mcp->mb[2] = LSW(risc_addr);
                mcp->mb[3] = 0;
                mcp->mb[4] = 0;
                ha->flags.using_lr_setting = 0;
                if (IS_QLA25XX(ha) || IS_QLA81XX(ha) || IS_QLA83XX(ha) ||
                    IS_QLA27XX(ha)) {
                        if (ql2xautodetectsfp) {
                                if (ha->flags.detected_lr_sfp) {
                                        mcp->mb[4] |=
                                            qla25xx_set_sfp_lr_dist(ha);
                                        ha->flags.using_lr_setting = 1;
                                }
                        } else {
                                struct nvram_81xx *nv = ha->nvram;
                                /* set LR distance if specified in nvram */
                                if (nv->enhanced_features &
                                    NEF_LR_DIST_ENABLE) {
                                        mcp->mb[4] |=
                                            qla25xx_set_nvr_lr_dist(ha);
                                        ha->flags.using_lr_setting = 1;
                                }
                        }
                }

                if (ql2xnvmeenable && IS_QLA27XX(ha))
                        mcp->mb[4] |= NVME_ENABLE_FLAG;

                if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
                        struct nvram_81xx *nv = ha->nvram;
                        /* set minimum speed if specified in nvram */
                        if (nv->min_link_speed >= 2 &&
                            nv->min_link_speed <= 5) {
                                mcp->mb[4] |= BIT_4;
                                mcp->mb[11] = nv->min_link_speed;
                                mcp->out_mb |= MBX_11;
                                mcp->in_mb |= BIT_5;
                                vha->min_link_speed_feat = nv->min_link_speed;
                        }
                }

                if (ha->flags.exlogins_enabled)
                        mcp->mb[4] |= ENABLE_EXTENDED_LOGIN;

                if (ha->flags.exchoffld_enabled)
                        mcp->mb[4] |= ENABLE_EXCHANGE_OFFLD;

                mcp->out_mb |= MBX_4|MBX_3|MBX_2|MBX_1;
                mcp->in_mb |= MBX_3 | MBX_2 | MBX_1;
        } else {
                mcp->mb[1] = LSW(risc_addr);
                mcp->out_mb |= MBX_1;
                if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                        mcp->mb[2] = 0;
                        mcp->out_mb |= MBX_2;
                }
        }

        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1026,
                    "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
        } else {
                if (IS_FWI2_CAPABLE(ha)) {
                        ha->fw_ability_mask = mcp->mb[3] << 16 | mcp->mb[2];
                        ql_dbg(ql_dbg_mbx, vha, 0x119a,
                            "fw_ability_mask=%x.\n", ha->fw_ability_mask);
                        ql_dbg(ql_dbg_mbx, vha, 0x1027,
                            "exchanges=%x.\n", mcp->mb[1]);
                        if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
                                ha->max_speed_sup = mcp->mb[2] & BIT_0;
                                ql_dbg(ql_dbg_mbx, vha, 0x119b,
                                    "Maximum speed supported=%s.\n",
                                    ha->max_speed_sup ? "32Gps" : "16Gps");
                                if (vha->min_link_speed_feat) {
                                        ha->min_link_speed = mcp->mb[5];
                                        ql_dbg(ql_dbg_mbx, vha, 0x119c,
                                            "Minimum speed set=%s.\n",
                                            mcp->mb[5] == 5 ? "32Gps" :
                                            mcp->mb[5] == 4 ? "16Gps" :
                                            mcp->mb[5] == 3 ? "8Gps" :
                                            mcp->mb[5] == 2 ? "4Gps" :
                                                "unknown");
                                }
                        }
                }
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1028,
                    "Done.\n");
        }

        return rval;
}

/*
 * qla_get_exlogin_status
 *      Get extended login status
 *      uses the memory offload control/status Mailbox
 *
 * Input:
 *      ha:             adapter state pointer.
 *      fwopt:          firmware options
 *
 * Returns:
 *      qla2x00 local function status
 *
 * Context:
 *      Kernel context.
 */
#define FETCH_XLOGINS_STAT      0x8
int
qla_get_exlogin_status(scsi_qla_host_t *vha, uint16_t *buf_sz,
        uint16_t *ex_logins_cnt)
{
        int rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x118f,
            "Entered %s\n", __func__);

        memset(mcp->mb, 0 , sizeof(mcp->mb));
        mcp->mb[0] = MBC_GET_MEM_OFFLOAD_CNTRL_STAT;
        mcp->mb[1] = FETCH_XLOGINS_STAT;
        mcp->out_mb = MBX_1|MBX_0;
        mcp->in_mb = MBX_10|MBX_4|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;

        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1115, "Failed=%x.\n", rval);
        } else {
                *buf_sz = mcp->mb[4];
                *ex_logins_cnt = mcp->mb[10];

                ql_log(ql_log_info, vha, 0x1190,
                    "buffer size 0x%x, exchange login count=%d\n",
                    mcp->mb[4], mcp->mb[10]);

                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1116,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla_set_exlogin_mem_cfg
 *      set extended login memory configuration
 *      Mbx needs to be issues before init_cb is set
 *
 * Input:
 *      ha:             adapter state pointer.
 *      buffer:         buffer pointer
 *      phys_addr:      physical address of buffer
 *      size:           size of buffer
 *      TARGET_QUEUE_LOCK must be released
 *      ADAPTER_STATE_LOCK must be release
 *
 * Returns:
 *      qla2x00 local funxtion status code.
 *
 * Context:
 *      Kernel context.
 */
#define CONFIG_XLOGINS_MEM      0x3
int
qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha, dma_addr_t phys_addr)
{
        int             rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x111a,
            "Entered %s.\n", __func__);

        memset(mcp->mb, 0 , sizeof(mcp->mb));
        mcp->mb[0] = MBC_GET_MEM_OFFLOAD_CNTRL_STAT;
        mcp->mb[1] = CONFIG_XLOGINS_MEM;
        mcp->mb[2] = MSW(phys_addr);
        mcp->mb[3] = LSW(phys_addr);
        mcp->mb[6] = MSW(MSD(phys_addr));
        mcp->mb[7] = LSW(MSD(phys_addr));
        mcp->mb[8] = MSW(ha->exlogin_size);
        mcp->mb[9] = LSW(ha->exlogin_size);
        mcp->out_mb = MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_11|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x111b, "Failed=%x.\n", rval);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x118c,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla_get_exchoffld_status
 *      Get exchange offload status
 *      uses the memory offload control/status Mailbox
 *
 * Input:
 *      ha:             adapter state pointer.
 *      fwopt:          firmware options
 *
 * Returns:
 *      qla2x00 local function status
 *
 * Context:
 *      Kernel context.
 */
#define FETCH_XCHOFFLD_STAT     0x2
int
qla_get_exchoffld_status(scsi_qla_host_t *vha, uint16_t *buf_sz,
        uint16_t *ex_logins_cnt)
{
        int rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1019,
            "Entered %s\n", __func__);

        memset(mcp->mb, 0 , sizeof(mcp->mb));
        mcp->mb[0] = MBC_GET_MEM_OFFLOAD_CNTRL_STAT;
        mcp->mb[1] = FETCH_XCHOFFLD_STAT;
        mcp->out_mb = MBX_1|MBX_0;
        mcp->in_mb = MBX_10|MBX_4|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;

        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1155, "Failed=%x.\n", rval);
        } else {
                *buf_sz = mcp->mb[4];
                *ex_logins_cnt = mcp->mb[10];

                ql_log(ql_log_info, vha, 0x118e,
                    "buffer size 0x%x, exchange offload count=%d\n",
                    mcp->mb[4], mcp->mb[10]);

                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1156,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla_set_exchoffld_mem_cfg
 *      Set exchange offload memory configuration
 *      Mbx needs to be issues before init_cb is set
 *
 * Input:
 *      ha:             adapter state pointer.
 *      buffer:         buffer pointer
 *      phys_addr:      physical address of buffer
 *      size:           size of buffer
 *      TARGET_QUEUE_LOCK must be released
 *      ADAPTER_STATE_LOCK must be release
 *
 * Returns:
 *      qla2x00 local funxtion status code.
 *
 * Context:
 *      Kernel context.
 */
#define CONFIG_XCHOFFLD_MEM     0x3
int
qla_set_exchoffld_mem_cfg(scsi_qla_host_t *vha)
{
        int             rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1157,
            "Entered %s.\n", __func__);

        memset(mcp->mb, 0 , sizeof(mcp->mb));
        mcp->mb[0] = MBC_GET_MEM_OFFLOAD_CNTRL_STAT;
        mcp->mb[1] = CONFIG_XCHOFFLD_MEM;
        mcp->mb[2] = MSW(ha->exchoffld_buf_dma);
        mcp->mb[3] = LSW(ha->exchoffld_buf_dma);
        mcp->mb[6] = MSW(MSD(ha->exchoffld_buf_dma));
        mcp->mb[7] = LSW(MSD(ha->exchoffld_buf_dma));
        mcp->mb[8] = MSW(ha->exchoffld_size);
        mcp->mb[9] = LSW(ha->exchoffld_size);
        mcp->out_mb = MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_11|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1158, "Failed=%x.\n", rval);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1192,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_fw_version
 *      Get firmware version.
 *
 * Input:
 *      ha:             adapter state pointer.
 *      major:          pointer for major number.
 *      minor:          pointer for minor number.
 *      subminor:       pointer for subminor number.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_fw_version(scsi_qla_host_t *vha)
{
        int             rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1029,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_FIRMWARE_VERSION;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
        if (IS_QLA81XX(vha->hw) || IS_QLA8031(ha) || IS_QLA8044(ha))
                mcp->in_mb |= MBX_13|MBX_12|MBX_11|MBX_10|MBX_9|MBX_8;
        if (IS_FWI2_CAPABLE(ha))
                mcp->in_mb |= MBX_17|MBX_16|MBX_15;
        if (IS_QLA27XX(ha))
                mcp->in_mb |=
                    MBX_25|MBX_24|MBX_23|MBX_22|MBX_21|MBX_20|MBX_19|MBX_18|
                    MBX_14|MBX_13|MBX_11|MBX_10|MBX_9|MBX_8;

        mcp->flags = 0;
        mcp->tov = MBX_TOV_SECONDS;
        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS)
                goto failed;

        /* Return mailbox data. */
        ha->fw_major_version = mcp->mb[1];
        ha->fw_minor_version = mcp->mb[2];
        ha->fw_subminor_version = mcp->mb[3];
        ha->fw_attributes = mcp->mb[6];
        if (IS_QLA2100(vha->hw) || IS_QLA2200(vha->hw))
                ha->fw_memory_size = 0x1FFFF;           /* Defaults to 128KB. */
        else
                ha->fw_memory_size = (mcp->mb[5] << 16) | mcp->mb[4];

        if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
                ha->mpi_version[0] = mcp->mb[10] & 0xff;
                ha->mpi_version[1] = mcp->mb[11] >> 8;
                ha->mpi_version[2] = mcp->mb[11] & 0xff;
                ha->mpi_capabilities = (mcp->mb[12] << 16) | mcp->mb[13];
                ha->phy_version[0] = mcp->mb[8] & 0xff;
                ha->phy_version[1] = mcp->mb[9] >> 8;
                ha->phy_version[2] = mcp->mb[9] & 0xff;

        }

        if (IS_FWI2_CAPABLE(ha)) {
                ha->fw_attributes_h = mcp->mb[15];
                ha->fw_attributes_ext[0] = mcp->mb[16];
                ha->fw_attributes_ext[1] = mcp->mb[17];
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1139,
                    "%s: FW_attributes Upper: 0x%x, Lower: 0x%x.\n",
                    __func__, mcp->mb[15], mcp->mb[6]);
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x112f,
                    "%s: Ext_FwAttributes Upper: 0x%x, Lower: 0x%x.\n",
                    __func__, mcp->mb[17], mcp->mb[16]);

                if (ha->fw_attributes_h & 0x4)
                        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x118d,
                            "%s: Firmware supports Extended Login 0x%x\n",
                            __func__, ha->fw_attributes_h);

                if (ha->fw_attributes_h & 0x8)
                        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1191,
                            "%s: Firmware supports Exchange Offload 0x%x\n",
                            __func__, ha->fw_attributes_h);

                /*
                 * FW supports nvme and driver load parameter requested nvme.
                 * BIT 26 of fw_attributes indicates NVMe support.
                 */
                if ((ha->fw_attributes_h & 0x400) && ql2xnvmeenable)
                        vha->flags.nvme_enabled = 1;

        }

        if (IS_QLA27XX(ha)) {
                ha->mpi_version[0] = mcp->mb[10] & 0xff;
                ha->mpi_version[1] = mcp->mb[11] >> 8;
                ha->mpi_version[2] = mcp->mb[11] & 0xff;
                ha->pep_version[0] = mcp->mb[13] & 0xff;
                ha->pep_version[1] = mcp->mb[14] >> 8;
                ha->pep_version[2] = mcp->mb[14] & 0xff;
                ha->fw_shared_ram_start = (mcp->mb[19] << 16) | mcp->mb[18];
                ha->fw_shared_ram_end = (mcp->mb[21] << 16) | mcp->mb[20];
                ha->fw_ddr_ram_start = (mcp->mb[23] << 16) | mcp->mb[22];
                ha->fw_ddr_ram_end = (mcp->mb[25] << 16) | mcp->mb[24];
        }

failed:
        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x102a, "Failed=%x.\n", rval);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x102b,
                    "Done %s.\n", __func__);
        }
        return rval;
}

/*
 * qla2x00_get_fw_options
 *      Set firmware options.
 *
 * Input:
 *      ha = adapter block pointer.
 *      fwopt = pointer for firmware options.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_fw_options(scsi_qla_host_t *vha, uint16_t *fwopts)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x102c,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_FIRMWARE_OPTION;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x102d, "Failed=%x.\n", rval);
        } else {
                fwopts[0] = mcp->mb[0];
                fwopts[1] = mcp->mb[1];
                fwopts[2] = mcp->mb[2];
                fwopts[3] = mcp->mb[3];

                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x102e,
                    "Done %s.\n", __func__);
        }

        return rval;
}


/*
 * qla2x00_set_fw_options
 *      Set firmware options.
 *
 * Input:
 *      ha = adapter block pointer.
 *      fwopt = pointer for firmware options.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_set_fw_options(scsi_qla_host_t *vha, uint16_t *fwopts)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x102f,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_SET_FIRMWARE_OPTION;
        mcp->mb[1] = fwopts[1];
        mcp->mb[2] = fwopts[2];
        mcp->mb[3] = fwopts[3];
        mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_0;
        if (IS_FWI2_CAPABLE(vha->hw)) {
                mcp->in_mb |= MBX_1;
                mcp->mb[10] = fwopts[10];
                mcp->out_mb |= MBX_10;
        } else {
                mcp->mb[10] = fwopts[10];
                mcp->mb[11] = fwopts[11];
                mcp->mb[12] = 0;        /* Undocumented, but used */
                mcp->out_mb |= MBX_12|MBX_11|MBX_10;
        }
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        fwopts[0] = mcp->mb[0];

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1030,
                    "Failed=%x (%x/%x).\n", rval, mcp->mb[0], mcp->mb[1]);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1031,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_mbx_reg_test
 *      Mailbox register wrap test.
 *
 * Input:
 *      ha = adapter block pointer.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_mbx_reg_test(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1032,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_MAILBOX_REGISTER_TEST;
        mcp->mb[1] = 0xAAAA;
        mcp->mb[2] = 0x5555;
        mcp->mb[3] = 0xAA55;
        mcp->mb[4] = 0x55AA;
        mcp->mb[5] = 0xA5A5;
        mcp->mb[6] = 0x5A5A;
        mcp->mb[7] = 0x2525;
        mcp->out_mb = MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval == QLA_SUCCESS) {
                if (mcp->mb[1] != 0xAAAA || mcp->mb[2] != 0x5555 ||
                    mcp->mb[3] != 0xAA55 || mcp->mb[4] != 0x55AA)
                        rval = QLA_FUNCTION_FAILED;
                if (mcp->mb[5] != 0xA5A5 || mcp->mb[6] != 0x5A5A ||
                    mcp->mb[7] != 0x2525)
                        rval = QLA_FUNCTION_FAILED;
        }

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1033, "Failed=%x.\n", rval);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1034,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_verify_checksum
 *      Verify firmware checksum.
 *
 * Input:
 *      ha = adapter block pointer.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_verify_checksum(scsi_qla_host_t *vha, uint32_t risc_addr)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1035,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_VERIFY_CHECKSUM;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_0;
        if (IS_FWI2_CAPABLE(vha->hw)) {
                mcp->mb[1] = MSW(risc_addr);
                mcp->mb[2] = LSW(risc_addr);
                mcp->out_mb |= MBX_2|MBX_1;
                mcp->in_mb |= MBX_2|MBX_1;
        } else {
                mcp->mb[1] = LSW(risc_addr);
                mcp->out_mb |= MBX_1;
                mcp->in_mb |= MBX_1;
        }

        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1036,
                    "Failed=%x chm sum=%x.\n", rval, IS_FWI2_CAPABLE(vha->hw) ?
                    (mcp->mb[2] << 16) | mcp->mb[1] : mcp->mb[1]);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1037,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_issue_iocb
 *      Issue IOCB using mailbox command
 *
 * Input:
 *      ha = adapter state pointer.
 *      buffer = buffer pointer.
 *      phys_addr = physical address of buffer.
 *      size = size of buffer.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_issue_iocb_timeout(scsi_qla_host_t *vha, void *buffer,
    dma_addr_t phys_addr, size_t size, uint32_t tov)
{
        int             rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1038,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_IOCB_COMMAND_A64;
        mcp->mb[1] = 0;
        mcp->mb[2] = MSW(phys_addr);
        mcp->mb[3] = LSW(phys_addr);
        mcp->mb[6] = MSW(MSD(phys_addr));
        mcp->mb[7] = LSW(MSD(phys_addr));
        mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_2|MBX_0;
        mcp->tov = tov;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1039, "Failed=%x.\n", rval);
        } else {
                sts_entry_t *sts_entry = (sts_entry_t *) buffer;

                /* Mask reserved bits. */
                sts_entry->entry_status &=
                    IS_FWI2_CAPABLE(vha->hw) ? RF_MASK_24XX : RF_MASK;
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x103a,
                    "Done %s.\n", __func__);
        }

        return rval;
}

int
qla2x00_issue_iocb(scsi_qla_host_t *vha, void *buffer, dma_addr_t phys_addr,
    size_t size)
{
        return qla2x00_issue_iocb_timeout(vha, buffer, phys_addr, size,
            MBX_TOV_SECONDS);
}

/*
 * qla2x00_abort_command
 *      Abort command aborts a specified IOCB.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SB structure pointer.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_abort_command(srb_t *sp)
{
        unsigned long   flags = 0;
        int             rval;
        uint32_t        handle = 0;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;
        fc_port_t       *fcport = sp->fcport;
        scsi_qla_host_t *vha = fcport->vha;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;
        struct scsi_cmnd *cmd = GET_CMD_SP(sp);

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x103b,
            "Entered %s.\n", __func__);

        if (vha->flags.qpairs_available && sp->qpair)
                req = sp->qpair->req;
        else
                req = vha->req;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        for (handle = 1; handle < req->num_outstanding_cmds; handle++) {
                if (req->outstanding_cmds[handle] == sp)
                        break;
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        if (handle == req->num_outstanding_cmds) {
                /* command not found */
                return QLA_FUNCTION_FAILED;
        }

        mcp->mb[0] = MBC_ABORT_COMMAND;
        if (HAS_EXTENDED_IDS(ha))
                mcp->mb[1] = fcport->loop_id;
        else
                mcp->mb[1] = fcport->loop_id << 8;
        mcp->mb[2] = (uint16_t)handle;
        mcp->mb[3] = (uint16_t)(handle >> 16);
        mcp->mb[6] = (uint16_t)cmd->device->lun;
        mcp->out_mb = MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x103c, "Failed=%x.\n", rval);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x103d,
                    "Done %s.\n", __func__);
        }

        return rval;
}

int
qla2x00_abort_target(struct fc_port *fcport, uint64_t l, int tag)
{
        int rval, rval2;
        mbx_cmd_t  mc;
        mbx_cmd_t  *mcp = &mc;
        scsi_qla_host_t *vha;
        struct req_que *req;
        struct rsp_que *rsp;

        l = l;
        vha = fcport->vha;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x103e,
            "Entered %s.\n", __func__);

        req = vha->hw->req_q_map[0];
        rsp = req->rsp;
        mcp->mb[0] = MBC_ABORT_TARGET;
        mcp->out_mb = MBX_9|MBX_2|MBX_1|MBX_0;
        if (HAS_EXTENDED_IDS(vha->hw)) {
                mcp->mb[1] = fcport->loop_id;
                mcp->mb[10] = 0;
                mcp->out_mb |= MBX_10;
        } else {
                mcp->mb[1] = fcport->loop_id << 8;
        }
        mcp->mb[2] = vha->hw->loop_reset_delay;
        mcp->mb[9] = vha->vp_idx;

        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x103f,
                    "Failed=%x.\n", rval);
        }

        /* Issue marker IOCB. */
        rval2 = qla2x00_marker(vha, req, rsp, fcport->loop_id, 0,
                                                        MK_SYNC_ID);
        if (rval2 != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1040,
                    "Failed to issue marker IOCB (%x).\n", rval2);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1041,
                    "Done %s.\n", __func__);
        }

        return rval;
}

int
qla2x00_lun_reset(struct fc_port *fcport, uint64_t l, int tag)
{
        int rval, rval2;
        mbx_cmd_t  mc;
        mbx_cmd_t  *mcp = &mc;
        scsi_qla_host_t *vha;
        struct req_que *req;
        struct rsp_que *rsp;

        vha = fcport->vha;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1042,
            "Entered %s.\n", __func__);

        req = vha->hw->req_q_map[0];
        rsp = req->rsp;
        mcp->mb[0] = MBC_LUN_RESET;
        mcp->out_mb = MBX_9|MBX_3|MBX_2|MBX_1|MBX_0;
        if (HAS_EXTENDED_IDS(vha->hw))
                mcp->mb[1] = fcport->loop_id;
        else
                mcp->mb[1] = fcport->loop_id << 8;
        mcp->mb[2] = (u32)l;
        mcp->mb[3] = 0;
        mcp->mb[9] = vha->vp_idx;

        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1043, "Failed=%x.\n", rval);
        }

        /* Issue marker IOCB. */
        rval2 = qla2x00_marker(vha, req, rsp, fcport->loop_id, l,
                                                                MK_SYNC_ID_LUN);
        if (rval2 != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1044,
                    "Failed to issue marker IOCB (%x).\n", rval2);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1045,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_adapter_id
 *      Get adapter ID and topology.
 *
 * Input:
 *      ha = adapter block pointer.
 *      id = pointer for loop ID.
 *      al_pa = pointer for AL_PA.
 *      area = pointer for area.
 *      domain = pointer for domain.
 *      top = pointer for topology.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_adapter_id(scsi_qla_host_t *vha, uint16_t *id, uint8_t *al_pa,
    uint8_t *area, uint8_t *domain, uint16_t *top, uint16_t *sw_cap)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1046,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_ADAPTER_LOOP_ID;
        mcp->mb[9] = vha->vp_idx;
        mcp->out_mb = MBX_9|MBX_0;
        mcp->in_mb = MBX_9|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        if (IS_CNA_CAPABLE(vha->hw))
                mcp->in_mb |= MBX_13|MBX_12|MBX_11|MBX_10;
        if (IS_FWI2_CAPABLE(vha->hw))
                mcp->in_mb |= MBX_19|MBX_18|MBX_17|MBX_16;
        if (IS_QLA27XX(vha->hw))
                mcp->in_mb |= MBX_15;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);
        if (mcp->mb[0] == MBS_COMMAND_ERROR)
                rval = QLA_COMMAND_ERROR;
        else if (mcp->mb[0] == MBS_INVALID_COMMAND)
                rval = QLA_INVALID_COMMAND;

        /* Return data. */
        *id = mcp->mb[1];
        *al_pa = LSB(mcp->mb[2]);
        *area = MSB(mcp->mb[2]);
        *domain = LSB(mcp->mb[3]);
        *top = mcp->mb[6];
        *sw_cap = mcp->mb[7];

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1047, "Failed=%x.\n", rval);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1048,
                    "Done %s.\n", __func__);

                if (IS_CNA_CAPABLE(vha->hw)) {
                        vha->fcoe_vlan_id = mcp->mb[9] & 0xfff;
                        vha->fcoe_fcf_idx = mcp->mb[10];
                        vha->fcoe_vn_port_mac[5] = mcp->mb[11] >> 8;
                        vha->fcoe_vn_port_mac[4] = mcp->mb[11] & 0xff;
                        vha->fcoe_vn_port_mac[3] = mcp->mb[12] >> 8;
                        vha->fcoe_vn_port_mac[2] = mcp->mb[12] & 0xff;
                        vha->fcoe_vn_port_mac[1] = mcp->mb[13] >> 8;
                        vha->fcoe_vn_port_mac[0] = mcp->mb[13] & 0xff;
                }
                /* If FA-WWN supported */
                if (IS_FAWWN_CAPABLE(vha->hw)) {
                        if (mcp->mb[7] & BIT_14) {
                                vha->port_name[0] = MSB(mcp->mb[16]);
                                vha->port_name[1] = LSB(mcp->mb[16]);
                                vha->port_name[2] = MSB(mcp->mb[17]);
                                vha->port_name[3] = LSB(mcp->mb[17]);
                                vha->port_name[4] = MSB(mcp->mb[18]);
                                vha->port_name[5] = LSB(mcp->mb[18]);
                                vha->port_name[6] = MSB(mcp->mb[19]);
                                vha->port_name[7] = LSB(mcp->mb[19]);
                                fc_host_port_name(vha->host) =
                                    wwn_to_u64(vha->port_name);
                                ql_dbg(ql_dbg_mbx, vha, 0x10ca,
                                    "FA-WWN acquired %016llx\n",
                                    wwn_to_u64(vha->port_name));
                        }
                }

                if (IS_QLA27XX(vha->hw))
                        vha->bbcr = mcp->mb[15];
        }

        return rval;
}

/*
 * qla2x00_get_retry_cnt
 *      Get current firmware login retry count and delay.
 *
 * Input:
 *      ha = adapter block pointer.
 *      retry_cnt = pointer to login retry count.
 *      tov = pointer to login timeout value.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_retry_cnt(scsi_qla_host_t *vha, uint8_t *retry_cnt, uint8_t *tov,
    uint16_t *r_a_tov)
{
        int rval;
        uint16_t ratov;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1049,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_RETRY_COUNT;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x104a,
                    "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
        } else {
                /* Convert returned data and check our values. */
                *r_a_tov = mcp->mb[3] / 2;
                ratov = (mcp->mb[3]/2) / 10;  /* mb[3] value is in 100ms */
                if (mcp->mb[1] * ratov > (*retry_cnt) * (*tov)) {
                        /* Update to the larger values */
                        *retry_cnt = (uint8_t)mcp->mb[1];
                        *tov = ratov;
                }

                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x104b,
                    "Done %s mb3=%d ratov=%d.\n", __func__, mcp->mb[3], ratov);
        }

        return rval;
}

/*
 * qla2x00_init_firmware
 *      Initialize adapter firmware.
 *
 * Input:
 *      ha = adapter block pointer.
 *      dptr = Initialization control block pointer.
 *      size = size of initialization control block.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_init_firmware(scsi_qla_host_t *vha, uint16_t size)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x104c,
            "Entered %s.\n", __func__);

        if (IS_P3P_TYPE(ha) && ql2xdbwr)
                qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr,
                        (0x04 | (ha->portnum << 5) | (0 << 8) | (0 << 16)));

        if (ha->flags.npiv_supported)
                mcp->mb[0] = MBC_MID_INITIALIZE_FIRMWARE;
        else
                mcp->mb[0] = MBC_INITIALIZE_FIRMWARE;

        mcp->mb[1] = 0;
        mcp->mb[2] = MSW(ha->init_cb_dma);
        mcp->mb[3] = LSW(ha->init_cb_dma);
        mcp->mb[6] = MSW(MSD(ha->init_cb_dma));
        mcp->mb[7] = LSW(MSD(ha->init_cb_dma));
        mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        if (ha->ex_init_cb && ha->ex_init_cb->ex_version) {
                mcp->mb[1] = BIT_0;
                mcp->mb[10] = MSW(ha->ex_init_cb_dma);
                mcp->mb[11] = LSW(ha->ex_init_cb_dma);
                mcp->mb[12] = MSW(MSD(ha->ex_init_cb_dma));
                mcp->mb[13] = LSW(MSD(ha->ex_init_cb_dma));
                mcp->mb[14] = sizeof(*ha->ex_init_cb);
                mcp->out_mb |= MBX_14|MBX_13|MBX_12|MBX_11|MBX_10;
        }
        /* 1 and 2 should normally be captured. */
        mcp->in_mb = MBX_2|MBX_1|MBX_0;
        if (IS_QLA83XX(ha) || IS_QLA27XX(ha))
                /* mb3 is additional info about the installed SFP. */
                mcp->in_mb  |= MBX_3;
        mcp->buf_size = size;
        mcp->flags = MBX_DMA_OUT;
        mcp->tov = MBX_TOV_SECONDS;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x104d,
                    "Failed=%x mb[0]=%x, mb[1]=%x, mb[2]=%x, mb[3]=%x,.\n",
                    rval, mcp->mb[0], mcp->mb[1], mcp->mb[2], mcp->mb[3]);
        } else {
                if (IS_QLA27XX(ha)) {
                        if (mcp->mb[2] == 6 || mcp->mb[3] == 2)
                                ql_dbg(ql_dbg_mbx, vha, 0x119d,
                                    "Invalid SFP/Validation Failed\n");
                }
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x104e,
                    "Done %s.\n", __func__);
        }

        return rval;
}


/*
 * qla2x00_get_port_database
 *      Issue normal/enhanced get port database mailbox command
 *      and copy device name as necessary.
 *
 * Input:
 *      ha = adapter state pointer.
 *      dev = structure pointer.
 *      opt = enhanced cmd option byte.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_port_database(scsi_qla_host_t *vha, fc_port_t *fcport, uint8_t opt)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        port_database_t *pd;
        struct port_database_24xx *pd24;
        dma_addr_t pd_dma;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x104f,
            "Entered %s.\n", __func__);

        pd24 = NULL;
        pd = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, &pd_dma);
        if (pd  == NULL) {
                ql_log(ql_log_warn, vha, 0x1050,
                    "Failed to allocate port database structure.\n");
                fcport->query = 0;
                return QLA_MEMORY_ALLOC_FAILED;
        }

        mcp->mb[0] = MBC_GET_PORT_DATABASE;
        if (opt != 0 && !IS_FWI2_CAPABLE(ha))
                mcp->mb[0] = MBC_ENHANCED_GET_PORT_DATABASE;
        mcp->mb[2] = MSW(pd_dma);
        mcp->mb[3] = LSW(pd_dma);
        mcp->mb[6] = MSW(MSD(pd_dma));
        mcp->mb[7] = LSW(MSD(pd_dma));
        mcp->mb[9] = vha->vp_idx;
        mcp->out_mb = MBX_9|MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
        mcp->in_mb = MBX_0;
        if (IS_FWI2_CAPABLE(ha)) {
                mcp->mb[1] = fcport->loop_id;
                mcp->mb[10] = opt;
                mcp->out_mb |= MBX_10|MBX_1;
                mcp->in_mb |= MBX_1;
        } else if (HAS_EXTENDED_IDS(ha)) {
                mcp->mb[1] = fcport->loop_id;
                mcp->mb[10] = opt;
                mcp->out_mb |= MBX_10|MBX_1;
        } else {
                mcp->mb[1] = fcport->loop_id << 8 | opt;
                mcp->out_mb |= MBX_1;
        }
        mcp->buf_size = IS_FWI2_CAPABLE(ha) ?
            PORT_DATABASE_24XX_SIZE : PORT_DATABASE_SIZE;
        mcp->flags = MBX_DMA_IN;
        mcp->tov = (ha->login_timeout * 2) + (ha->login_timeout / 2);
        rval = qla2x00_mailbox_command(vha, mcp);
        if (rval != QLA_SUCCESS)
                goto gpd_error_out;

        if (IS_FWI2_CAPABLE(ha)) {
                uint64_t zero = 0;
                u8 current_login_state, last_login_state;

                pd24 = (struct port_database_24xx *) pd;

                /* Check for logged in state. */
                if (fcport->fc4f_nvme) {
                        current_login_state = pd24->current_login_state >> 4;
                        last_login_state = pd24->last_login_state >> 4;
                } else {
                        current_login_state = pd24->current_login_state & 0xf;
                        last_login_state = pd24->last_login_state & 0xf;
                }
                fcport->current_login_state = pd24->current_login_state;
                fcport->last_login_state = pd24->last_login_state;

                /* Check for logged in state. */
                if (current_login_state != PDS_PRLI_COMPLETE &&
                    last_login_state != PDS_PRLI_COMPLETE) {
                        ql_dbg(ql_dbg_mbx, vha, 0x119a,
                            "Unable to verify login-state (%x/%x) for loop_id %x.\n",
                            current_login_state, last_login_state,
                            fcport->loop_id);
                        rval = QLA_FUNCTION_FAILED;

                        if (!fcport->query)
                                goto gpd_error_out;
                }

                if (fcport->loop_id == FC_NO_LOOP_ID ||
                    (memcmp(fcport->port_name, (uint8_t *)&zero, 8) &&
                     memcmp(fcport->port_name, pd24->port_name, 8))) {
                        /* We lost the device mid way. */
                        rval = QLA_NOT_LOGGED_IN;
                        goto gpd_error_out;
                }

                /* Names are little-endian. */
                memcpy(fcport->node_name, pd24->node_name, WWN_SIZE);
                memcpy(fcport->port_name, pd24->port_name, WWN_SIZE);

                /* Get port_id of device. */
                fcport->d_id.b.domain = pd24->port_id[0];
                fcport->d_id.b.area = pd24->port_id[1];
                fcport->d_id.b.al_pa = pd24->port_id[2];
                fcport->d_id.b.rsvd_1 = 0;

                /* If not target must be initiator or unknown type. */
                if ((pd24->prli_svc_param_word_3[0] & BIT_4) == 0)
                        fcport->port_type = FCT_INITIATOR;
                else
                        fcport->port_type = FCT_TARGET;

                /* Passback COS information. */
                fcport->supported_classes = (pd24->flags & PDF_CLASS_2) ?
                                FC_COS_CLASS2 : FC_COS_CLASS3;

                if (pd24->prli_svc_param_word_3[0] & BIT_7)
                        fcport->flags |= FCF_CONF_COMP_SUPPORTED;
        } else {
                uint64_t zero = 0;

                /* Check for logged in state. */
                if (pd->master_state != PD_STATE_PORT_LOGGED_IN &&
                    pd->slave_state != PD_STATE_PORT_LOGGED_IN) {
                        ql_dbg(ql_dbg_mbx, vha, 0x100a,
                            "Unable to verify login-state (%x/%x) - "
                            "portid=%02x%02x%02x.\n", pd->master_state,
                            pd->slave_state, fcport->d_id.b.domain,
                            fcport->d_id.b.area, fcport->d_id.b.al_pa);
                        rval = QLA_FUNCTION_FAILED;
                        goto gpd_error_out;
                }

                if (fcport->loop_id == FC_NO_LOOP_ID ||
                    (memcmp(fcport->port_name, (uint8_t *)&zero, 8) &&
                     memcmp(fcport->port_name, pd->port_name, 8))) {
                        /* We lost the device mid way. */
                        rval = QLA_NOT_LOGGED_IN;
                        goto gpd_error_out;
                }

                /* Names are little-endian. */
                memcpy(fcport->node_name, pd->node_name, WWN_SIZE);
                memcpy(fcport->port_name, pd->port_name, WWN_SIZE);

                /* Get port_id of device. */
                fcport->d_id.b.domain = pd->port_id[0];
                fcport->d_id.b.area = pd->port_id[3];
                fcport->d_id.b.al_pa = pd->port_id[2];
                fcport->d_id.b.rsvd_1 = 0;

                /* If not target must be initiator or unknown type. */
                if ((pd->prli_svc_param_word_3[0] & BIT_4) == 0)
                        fcport->port_type = FCT_INITIATOR;
                else
                        fcport->port_type = FCT_TARGET;

                /* Passback COS information. */
                fcport->supported_classes = (pd->options & BIT_4) ?
                    FC_COS_CLASS2: FC_COS_CLASS3;
        }

gpd_error_out:
        dma_pool_free(ha->s_dma_pool, pd, pd_dma);
        fcport->query = 0;

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1052,
                    "Failed=%x mb[0]=%x mb[1]=%x.\n", rval,
                    mcp->mb[0], mcp->mb[1]);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1053,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_firmware_state
 *      Get adapter firmware state.
 *
 * Input:
 *      ha = adapter block pointer.
 *      dptr = pointer for firmware state.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_firmware_state(scsi_qla_host_t *vha, uint16_t *states)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1054,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_FIRMWARE_STATE;
        mcp->out_mb = MBX_0;
        if (IS_FWI2_CAPABLE(vha->hw))
                mcp->in_mb = MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
        else
                mcp->in_mb = MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        /* Return firmware states. */
        states[0] = mcp->mb[1];
        if (IS_FWI2_CAPABLE(vha->hw)) {
                states[1] = mcp->mb[2];
                states[2] = mcp->mb[3];  /* SFP info */
                states[3] = mcp->mb[4];
                states[4] = mcp->mb[5];
                states[5] = mcp->mb[6];  /* DPORT status */
        }

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1055, "Failed=%x.\n", rval);
        } else {
                if (IS_QLA27XX(ha)) {
                        if (mcp->mb[2] == 6 || mcp->mb[3] == 2)
                                ql_dbg(ql_dbg_mbx, vha, 0x119e,
                                    "Invalid SFP/Validation Failed\n");
                }

                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1056,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_port_name
 *      Issue get port name mailbox command.
 *      Returned name is in big endian format.
 *
 * Input:
 *      ha = adapter block pointer.
 *      loop_id = loop ID of device.
 *      name = pointer for name.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_port_name(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t *name,
    uint8_t opt)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1057,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_PORT_NAME;
        mcp->mb[9] = vha->vp_idx;
        mcp->out_mb = MBX_9|MBX_1|MBX_0;
        if (HAS_EXTENDED_IDS(vha->hw)) {
                mcp->mb[1] = loop_id;
                mcp->mb[10] = opt;
                mcp->out_mb |= MBX_10;
        } else {
                mcp->mb[1] = loop_id << 8 | opt;
        }

        mcp->in_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1058, "Failed=%x.\n", rval);
        } else {
                if (name != NULL) {
                        /* This function returns name in big endian. */
                        name[0] = MSB(mcp->mb[2]);
                        name[1] = LSB(mcp->mb[2]);
                        name[2] = MSB(mcp->mb[3]);
                        name[3] = LSB(mcp->mb[3]);
                        name[4] = MSB(mcp->mb[6]);
                        name[5] = LSB(mcp->mb[6]);
                        name[6] = MSB(mcp->mb[7]);
                        name[7] = LSB(mcp->mb[7]);
                }

                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1059,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla24xx_link_initialization
 *      Issue link initialization mailbox command.
 *
 * Input:
 *      ha = adapter block pointer.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla24xx_link_initialize(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1152,
            "Entered %s.\n", __func__);

        if (!IS_FWI2_CAPABLE(vha->hw) || IS_CNA_CAPABLE(vha->hw))
                return QLA_FUNCTION_FAILED;

        mcp->mb[0] = MBC_LINK_INITIALIZATION;
        mcp->mb[1] = BIT_4;
        if (vha->hw->operating_mode == LOOP)
                mcp->mb[1] |= BIT_6;
        else
                mcp->mb[1] |= BIT_5;
        mcp->mb[2] = 0;
        mcp->mb[3] = 0;
        mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1153, "Failed=%x.\n", rval);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1154,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_lip_reset
 *      Issue LIP reset mailbox command.
 *
 * Input:
 *      ha = adapter block pointer.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_lip_reset(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x105a,
            "Entered %s.\n", __func__);

        if (IS_CNA_CAPABLE(vha->hw)) {
                /* Logout across all FCFs. */
                mcp->mb[0] = MBC_LIP_FULL_LOGIN;
                mcp->mb[1] = BIT_1;
                mcp->mb[2] = 0;
                mcp->out_mb = MBX_2|MBX_1|MBX_0;
        } else if (IS_FWI2_CAPABLE(vha->hw)) {
                mcp->mb[0] = MBC_LIP_FULL_LOGIN;
                mcp->mb[1] = BIT_6;
                mcp->mb[2] = 0;
                mcp->mb[3] = vha->hw->loop_reset_delay;
                mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        } else {
                mcp->mb[0] = MBC_LIP_RESET;
                mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
                if (HAS_EXTENDED_IDS(vha->hw)) {
                        mcp->mb[1] = 0x00ff;
                        mcp->mb[10] = 0;
                        mcp->out_mb |= MBX_10;
                } else {
                        mcp->mb[1] = 0xff00;
                }
                mcp->mb[2] = vha->hw->loop_reset_delay;
                mcp->mb[3] = 0;
        }
        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x105b, "Failed=%x.\n", rval);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x105c,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_send_sns
 *      Send SNS command.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sns = pointer for command.
 *      cmd_size = command size.
 *      buf_size = response/command size.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_send_sns(scsi_qla_host_t *vha, dma_addr_t sns_phys_address,
    uint16_t cmd_size, size_t buf_size)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x105d,
            "Entered %s.\n", __func__);

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x105e,
            "Retry cnt=%d ratov=%d total tov=%d.\n",
            vha->hw->retry_count, vha->hw->login_timeout, mcp->tov);

        mcp->mb[0] = MBC_SEND_SNS_COMMAND;
        mcp->mb[1] = cmd_size;
        mcp->mb[2] = MSW(sns_phys_address);
        mcp->mb[3] = LSW(sns_phys_address);
        mcp->mb[6] = MSW(MSD(sns_phys_address));
        mcp->mb[7] = LSW(MSD(sns_phys_address));
        mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_0|MBX_1;
        mcp->buf_size = buf_size;
        mcp->flags = MBX_DMA_OUT|MBX_DMA_IN;
        mcp->tov = (vha->hw->login_timeout * 2) + (vha->hw->login_timeout / 2);
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x105f,
                    "Failed=%x mb[0]=%x mb[1]=%x.\n",
                    rval, mcp->mb[0], mcp->mb[1]);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1060,
                    "Done %s.\n", __func__);
        }

        return rval;
}

int
qla24xx_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain,
    uint8_t area, uint8_t al_pa, uint16_t *mb, uint8_t opt)
{
        int             rval;

        struct logio_entry_24xx *lg;
        dma_addr_t      lg_dma;
        uint32_t        iop[2];
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1061,
            "Entered %s.\n", __func__);

        if (vha->vp_idx && vha->qpair)
                req = vha->qpair->req;
        else
                req = ha->req_q_map[0];

        lg = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, &lg_dma);
        if (lg == NULL) {
                ql_log(ql_log_warn, vha, 0x1062,
                    "Failed to allocate login IOCB.\n");
                return QLA_MEMORY_ALLOC_FAILED;
        }

        lg->entry_type = LOGINOUT_PORT_IOCB_TYPE;
        lg->entry_count = 1;
        lg->handle = MAKE_HANDLE(req->id, lg->handle);
        lg->nport_handle = cpu_to_le16(loop_id);
        lg->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
        if (opt & BIT_0)
                lg->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
        if (opt & BIT_1)
                lg->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
        lg->port_id[0] = al_pa;
        lg->port_id[1] = area;
        lg->port_id[2] = domain;
        lg->vp_index = vha->vp_idx;
        rval = qla2x00_issue_iocb_timeout(vha, lg, lg_dma, 0,
            (ha->r_a_tov / 10 * 2) + 2);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1063,
                    "Failed to issue login IOCB (%x).\n", rval);
        } else if (lg->entry_status != 0) {
                ql_dbg(ql_dbg_mbx, vha, 0x1064,
                    "Failed to complete IOCB -- error status (%x).\n",
                    lg->entry_status);
                rval = QLA_FUNCTION_FAILED;
        } else if (lg->comp_status != cpu_to_le16(CS_COMPLETE)) {
                iop[0] = le32_to_cpu(lg->io_parameter[0]);
                iop[1] = le32_to_cpu(lg->io_parameter[1]);

                ql_dbg(ql_dbg_mbx, vha, 0x1065,
                    "Failed to complete IOCB -- completion  status (%x) "
                    "ioparam=%x/%x.\n", le16_to_cpu(lg->comp_status),
                    iop[0], iop[1]);

                switch (iop[0]) {
                case LSC_SCODE_PORTID_USED:
                        mb[0] = MBS_PORT_ID_USED;
                        mb[1] = LSW(iop[1]);
                        break;
                case LSC_SCODE_NPORT_USED:
                        mb[0] = MBS_LOOP_ID_USED;
                        break;
                case LSC_SCODE_NOLINK:
                case LSC_SCODE_NOIOCB:
                case LSC_SCODE_NOXCB:
                case LSC_SCODE_CMD_FAILED:
                case LSC_SCODE_NOFABRIC:
                case LSC_SCODE_FW_NOT_READY:
                case LSC_SCODE_NOT_LOGGED_IN:
                case LSC_SCODE_NOPCB:
                case LSC_SCODE_ELS_REJECT:
                case LSC_SCODE_CMD_PARAM_ERR:
                case LSC_SCODE_NONPORT:
                case LSC_SCODE_LOGGED_IN:
                case LSC_SCODE_NOFLOGI_ACC:
                default:
                        mb[0] = MBS_COMMAND_ERROR;
                        break;
                }
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1066,
                    "Done %s.\n", __func__);

                iop[0] = le32_to_cpu(lg->io_parameter[0]);

                mb[0] = MBS_COMMAND_COMPLETE;
                mb[1] = 0;
                if (iop[0] & BIT_4) {
                        if (iop[0] & BIT_8)
                                mb[1] |= BIT_1;
                } else
                        mb[1] = BIT_0;

                /* Passback COS information. */
                mb[10] = 0;
                if (lg->io_parameter[7] || lg->io_parameter[8])
                        mb[10] |= BIT_0;        /* Class 2. */
                if (lg->io_parameter[9] || lg->io_parameter[10])
                        mb[10] |= BIT_1;        /* Class 3. */
                if (lg->io_parameter[0] & cpu_to_le32(BIT_7))
                        mb[10] |= BIT_7;        /* Confirmed Completion
                                                 * Allowed
                                                 */
        }

        dma_pool_free(ha->s_dma_pool, lg, lg_dma);

        return rval;
}

/*
 * qla2x00_login_fabric
 *      Issue login fabric port mailbox command.
 *
 * Input:
 *      ha = adapter block pointer.
 *      loop_id = device loop ID.
 *      domain = device domain.
 *      area = device area.
 *      al_pa = device AL_PA.
 *      status = pointer for return status.
 *      opt = command options.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain,
    uint8_t area, uint8_t al_pa, uint16_t *mb, uint8_t opt)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1067,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_LOGIN_FABRIC_PORT;
        mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        if (HAS_EXTENDED_IDS(ha)) {
                mcp->mb[1] = loop_id;
                mcp->mb[10] = opt;
                mcp->out_mb |= MBX_10;
        } else {
                mcp->mb[1] = (loop_id << 8) | opt;
        }
        mcp->mb[2] = domain;
        mcp->mb[3] = area << 8 | al_pa;

        mcp->in_mb = MBX_7|MBX_6|MBX_2|MBX_1|MBX_0;
        mcp->tov = (ha->login_timeout * 2) + (ha->login_timeout / 2);
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        /* Return mailbox statuses. */
        if (mb != NULL) {
                mb[0] = mcp->mb[0];
                mb[1] = mcp->mb[1];
                mb[2] = mcp->mb[2];
                mb[6] = mcp->mb[6];
                mb[7] = mcp->mb[7];
                /* COS retrieved from Get-Port-Database mailbox command. */
                mb[10] = 0;
        }

        if (rval != QLA_SUCCESS) {
                /* RLU tmp code: need to change main mailbox_command function to
                 * return ok even when the mailbox completion value is not
                 * SUCCESS. The caller needs to be responsible to interpret
                 * the return values of this mailbox command if we're not
                 * to change too much of the existing code.
                 */
                if (mcp->mb[0] == 0x4001 || mcp->mb[0] == 0x4002 ||
                    mcp->mb[0] == 0x4003 || mcp->mb[0] == 0x4005 ||
                    mcp->mb[0] == 0x4006)
                        rval = QLA_SUCCESS;

                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1068,
                    "Failed=%x mb[0]=%x mb[1]=%x mb[2]=%x.\n",
                    rval, mcp->mb[0], mcp->mb[1], mcp->mb[2]);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1069,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_login_local_device
 *           Issue login loop port mailbox command.
 *
 * Input:
 *           ha = adapter block pointer.
 *           loop_id = device loop ID.
 *           opt = command options.
 *
 * Returns:
 *            Return status code.
 *
 * Context:
 *            Kernel context.
 *
 */
int
qla2x00_login_local_device(scsi_qla_host_t *vha, fc_port_t *fcport,
    uint16_t *mb_ret, uint8_t opt)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x106a,
            "Entered %s.\n", __func__);

        if (IS_FWI2_CAPABLE(ha))
                return qla24xx_login_fabric(vha, fcport->loop_id,
                    fcport->d_id.b.domain, fcport->d_id.b.area,
                    fcport->d_id.b.al_pa, mb_ret, opt);

        mcp->mb[0] = MBC_LOGIN_LOOP_PORT;
        if (HAS_EXTENDED_IDS(ha))
                mcp->mb[1] = fcport->loop_id;
        else
                mcp->mb[1] = fcport->loop_id << 8;
        mcp->mb[2] = opt;
        mcp->out_mb = MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_7|MBX_6|MBX_1|MBX_0;
        mcp->tov = (ha->login_timeout * 2) + (ha->login_timeout / 2);
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        /* Return mailbox statuses. */
        if (mb_ret != NULL) {
                mb_ret[0] = mcp->mb[0];
                mb_ret[1] = mcp->mb[1];
                mb_ret[6] = mcp->mb[6];
                mb_ret[7] = mcp->mb[7];
        }

        if (rval != QLA_SUCCESS) {
                /* AV tmp code: need to change main mailbox_command function to
                 * return ok even when the mailbox completion value is not
                 * SUCCESS. The caller needs to be responsible to interpret
                 * the return values of this mailbox command if we're not
                 * to change too much of the existing code.
                 */
                if (mcp->mb[0] == 0x4005 || mcp->mb[0] == 0x4006)
                        rval = QLA_SUCCESS;

                ql_dbg(ql_dbg_mbx, vha, 0x106b,
                    "Failed=%x mb[0]=%x mb[1]=%x mb[6]=%x mb[7]=%x.\n",
                    rval, mcp->mb[0], mcp->mb[1], mcp->mb[6], mcp->mb[7]);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x106c,
                    "Done %s.\n", __func__);
        }

        return (rval);
}

int
qla24xx_fabric_logout(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain,
    uint8_t area, uint8_t al_pa)
{
        int             rval;
        struct logio_entry_24xx *lg;
        dma_addr_t      lg_dma;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x106d,
            "Entered %s.\n", __func__);

        lg = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, &lg_dma);
        if (lg == NULL) {
                ql_log(ql_log_warn, vha, 0x106e,
                    "Failed to allocate logout IOCB.\n");
                return QLA_MEMORY_ALLOC_FAILED;
        }

        req = vha->req;
        lg->entry_type = LOGINOUT_PORT_IOCB_TYPE;
        lg->entry_count = 1;
        lg->handle = MAKE_HANDLE(req->id, lg->handle);
        lg->nport_handle = cpu_to_le16(loop_id);
        lg->control_flags =
            cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO|
                LCF_FREE_NPORT);
        lg->port_id[0] = al_pa;
        lg->port_id[1] = area;
        lg->port_id[2] = domain;
        lg->vp_index = vha->vp_idx;
        rval = qla2x00_issue_iocb_timeout(vha, lg, lg_dma, 0,
            (ha->r_a_tov / 10 * 2) + 2);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x106f,
                    "Failed to issue logout IOCB (%x).\n", rval);
        } else if (lg->entry_status != 0) {
                ql_dbg(ql_dbg_mbx, vha, 0x1070,
                    "Failed to complete IOCB -- error status (%x).\n",
                    lg->entry_status);
                rval = QLA_FUNCTION_FAILED;
        } else if (lg->comp_status != cpu_to_le16(CS_COMPLETE)) {
                ql_dbg(ql_dbg_mbx, vha, 0x1071,
                    "Failed to complete IOCB -- completion status (%x) "
                    "ioparam=%x/%x.\n", le16_to_cpu(lg->comp_status),
                    le32_to_cpu(lg->io_parameter[0]),
                    le32_to_cpu(lg->io_parameter[1]));
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1072,
                    "Done %s.\n", __func__);
        }

        dma_pool_free(ha->s_dma_pool, lg, lg_dma);

        return rval;
}

/*
 * qla2x00_fabric_logout
 *      Issue logout fabric port mailbox command.
 *
 * Input:
 *      ha = adapter block pointer.
 *      loop_id = device loop ID.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_fabric_logout(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain,
    uint8_t area, uint8_t al_pa)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1073,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_LOGOUT_FABRIC_PORT;
        mcp->out_mb = MBX_1|MBX_0;
        if (HAS_EXTENDED_IDS(vha->hw)) {
                mcp->mb[1] = loop_id;
                mcp->mb[10] = 0;
                mcp->out_mb |= MBX_10;
        } else {
                mcp->mb[1] = loop_id << 8;
        }

        mcp->in_mb = MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1074,
                    "Failed=%x mb[1]=%x.\n", rval, mcp->mb[1]);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1075,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_full_login_lip
 *      Issue full login LIP mailbox command.
 *
 * Input:
 *      ha = adapter block pointer.
 *      TARGET_QUEUE_LOCK must be released.
 *      ADAPTER_STATE_LOCK must be released.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_full_login_lip(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1076,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_LIP_FULL_LOGIN;
        mcp->mb[1] = IS_FWI2_CAPABLE(vha->hw) ? BIT_3 : 0;
        mcp->mb[2] = 0;
        mcp->mb[3] = 0;
        mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x1077, "Failed=%x.\n", rval);
        } else {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1078,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_id_list
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_id_list(scsi_qla_host_t *vha, void *id_list, dma_addr_t id_list_dma,
    uint16_t *entries)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1079,
            "Entered %s.\n", __func__);

        if (id_list == NULL)
                return QLA_FUNCTION_FAILED;

        mcp->mb[0] = MBC_GET_ID_LIST;
        mcp->out_mb = MBX_0;
        if (IS_FWI2_CAPABLE(vha->hw)) {
                mcp->mb[2] = MSW(id_list_dma);
                mcp->mb[3] = LSW(id_list_dma);
                mcp->mb[6] = MSW(MSD(id_list_dma));
                mcp->mb[7] = LSW(MSD(id_list_dma));
                mcp->mb[8] = 0;
                mcp->mb[9] = vha->vp_idx;
                mcp->out_mb |= MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2;
        } else {
                mcp->mb[1] = MSW(id_list_dma);
                mcp->mb[2] = LSW(id_list_dma);
                mcp->mb[3] = MSW(MSD(id_list_dma));
                mcp->mb[6] = LSW(MSD(id_list_dma));
                mcp->out_mb |= MBX_6|MBX_3|MBX_2|MBX_1;
        }
        mcp->in_mb = MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x107a, "Failed=%x.\n", rval);
        } else {
                *entries = mcp->mb[1];
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x107b,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_resource_cnts
 *      Get current firmware resource counts.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_resource_cnts(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x107c,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_RESOURCE_COUNTS;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_11|MBX_10|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
        if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw) || IS_QLA27XX(vha->hw))
                mcp->in_mb |= MBX_12;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                ql_dbg(ql_dbg_mbx, vha, 0x107d,
                    "Failed mb[0]=%x.\n", mcp->mb[0]);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x107e,
                    "Done %s mb1=%x mb2=%x mb3=%x mb6=%x mb7=%x mb10=%x "
                    "mb11=%x mb12=%x.\n", __func__, mcp->mb[1], mcp->mb[2],
                    mcp->mb[3], mcp->mb[6], mcp->mb[7], mcp->mb[10],
                    mcp->mb[11], mcp->mb[12]);

                ha->orig_fw_tgt_xcb_count =  mcp->mb[1];
                ha->cur_fw_tgt_xcb_count = mcp->mb[2];
                ha->cur_fw_xcb_count = mcp->mb[3];
                ha->orig_fw_xcb_count = mcp->mb[6];
                ha->cur_fw_iocb_count = mcp->mb[7];
                ha->orig_fw_iocb_count = mcp->mb[10];
                if (ha->flags.npiv_supported)
                        ha->max_npiv_vports = mcp->mb[11];
                if (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha))
                        ha->fw_max_fcf_count = mcp->mb[12];
        }

        return (rval);
}

/*
 * qla2x00_get_fcal_position_map
 *      Get FCAL (LILP) position map using mailbox command
 *
 * Input:
 *      ha = adapter state pointer.
 *      pos_map = buffer pointer (can be NULL).
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla2x00_get_fcal_position_map(scsi_qla_host_t *vha, char *pos_map)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        char *pmap;
        dma_addr_t pmap_dma;
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x107f,
            "Entered %s.\n", __func__);

        pmap = dma_pool_zalloc(ha->s_dma_pool, GFP_KERNEL, &pmap_dma);
        if (pmap  == NULL) {
                ql_log(ql_log_warn, vha, 0x1080,
                    "Memory alloc failed.\n");
                return QLA_MEMORY_ALLOC_FAILED;
        }

        mcp->mb[0] = MBC_GET_FC_AL_POSITION_MAP;
        mcp->mb[2] = MSW(pmap_dma);
        mcp->mb[3] = LSW(pmap_dma);
        mcp->mb[6] = MSW(MSD(pmap_dma));
        mcp->mb[7] = LSW(MSD(pmap_dma));
        mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
        mcp->in_mb = MBX_1|MBX_0;
        mcp->buf_size = FCAL_MAP_SIZE;
        mcp->flags = MBX_DMA_IN;
        mcp->tov = (ha->login_timeout * 2) + (ha->login_timeout / 2);
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval == QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx + ql_dbg_buffer, vha, 0x1081,
                    "mb0/mb1=%x/%X FC/AL position map size (%x).\n",
                    mcp->mb[0], mcp->mb[1], (unsigned)pmap[0]);
                ql_dump_buffer(ql_dbg_mbx + ql_dbg_buffer, vha, 0x111d,
                    pmap, pmap[0] + 1);

                if (pos_map)
                        memcpy(pos_map, pmap, FCAL_MAP_SIZE);
        }
        dma_pool_free(ha->s_dma_pool, pmap, pmap_dma);

        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_mbx, vha, 0x1082, "Failed=%x.\n", rval);
        } else {
                ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1083,
                    "Done %s.\n", __func__);
        }

        return rval;
}

/*
 * qla2x00_get_link_status
 *
 * Input:
 *      ha = adapter block pointer.
 *      loop_id = device loop ID.
 *      ret_buf = pointer to link status return buffer.
 *
 * Returns:
 *      0 = success.
 *      BIT_0 = mem alloc error.
 *      BIT_1 = mailbox error.
 */
int
qla2x00_get_link_status(scsi_qla_host_t *vha, uint16_t loop_id,
    struct link_statistics *stats, dma_addr_t stats_dma)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        uint32_t *iter = (void *)stats;
        ushort dwords = offsetof(typeof(*stats), link_up_cnt)/sizeof(*iter);
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1084,
            "Entered %s.\n", __func__);

        mcp->mb[0] = MBC_GET_LINK_STATUS;
        mcp->mb[2] = MSW(LSD(stats_dma));
        mcp->mb[3] = LSW(LSD(stats_dma));
        mcp->mb[6] = MSW(MSD(stats_dma));
        mcp->mb[7] = LSW(MSD(stats_dma));
        mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
        mcp->in_mb = MBX_0;
        if (IS_FWI2_CAPABLE(ha)) {
                mcp->mb[1] = loop_id;
                mcp->mb[4] = 0;
                mcp->mb[10] = 0;
                mcp->out_mb |= MBX_10|MBX_4|MBX_1;
                mcp->in_mb |= MBX_1;
        } else if (HAS_EXTENDED_IDS(ha)) {
                mcp->mb[1] = loop_id;
                mcp->mb[10] = 0;
                mcp->out_mb |= MBX_10|MBX_1;
        } else {
                mcp->mb[1] = loop_id << 8;
                mcp->out_mb |= MBX_1;
        }
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = IOCTL_CMD;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval == QLA_SUCCESS) {
                if (mcp->mb[0] != MBS_COMMAND_COMPLETE) {
                        ql_dbg(ql_dbg_mbx, vha, 0x1085,
                            "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
                        rval = QLA_FUNCTION_FAILED;
                } else {
                        /* Re-endianize - firmware data is le32. */
                        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1086,
                            "Done %s.\n", __func__);
                        for ( ; dwords--; iter++)
                                le32_to_cpus(iter);
                }
        } else {
                /* Failed. */
                ql_dbg(ql_dbg_mbx, vha, 0x1087, "Failed=%x.\n", rval);
        }

        return rval;
}

int
qla24xx_get_isp_stats(scsi_qla_host_t *vha, struct link_statistics *stats,
    dma_addr_t stats_dma, uint16_t options)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        uint32_t *iter, dwords;

        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1088,
            "Entered %s.\n", __func__);

        memset(&mc, 0, sizeof(mc));
        mc.mb[0] = MBC_GET_LINK_PRIV_STATS;
        mc.mb[2] = MSW(stats_dma);
        mc.mb[3] = LSW(stats_dma);
        mc.mb[6] = MSW(MSD(stats_dma));
        mc.mb[7] = LSW(MSD(stats_dma));
        mc.mb[8] = sizeof(struct link_statistics) / 4;
        mc.mb[9] = cpu_to_le16(vha->vp_idx);
        mc.mb[10] = cpu_to_le16(options);

        rval = qla24xx_send_mb_cmd(vha, &mc);

        if (rval == QLA_SUCCESS) {
                if (mcp->mb[0] != MBS_COMMAND_COMPLETE) {
                        ql_dbg(ql_dbg_mbx, vha, 0x1089,
                            "Failed mb[0]=%x.\n", mcp->mb[0]);
                        rval = QLA_FUNCTION_FAILED;
                } else {
                        ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x108a,
                            "Done %s.\n", __func__);
                        /* Re-endianize - firmware data is le32. */
                        dwords = sizeof(struct link_statistics) / 4;
                        iter = &stats->link_fail_cnt;
                        for ( ; dwords--; iter++)
                                le32_to_cpus(iter);
                }
        } else {
                /* Failed. */
                ql_dbg(ql_dbg_mbx, vha, 0x108b, "Failed=%x.\n", rval);
        }

        return rval;
}

int
qla24xx_abort_command(srb_t *sp)
{
        int             rval;