/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2008 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"

#include <linux/delay.h>


/*
 * 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;
        unsigned long    flags = 0;
        device_reg_t __iomem *reg;
        uint8_t         abort_active;
        uint8_t         io_lock_on;
        uint16_t        command;
        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);

        if (ha->pdev->error_state > pci_channel_io_frozen)
                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);

        DEBUG11(printk("%s(%ld): entered.\n", __func__, base_vha->host_no));

        /*
         * 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. */
                DEBUG2_3_11(printk("%s(%ld): cmd access timeout. "
                    "Exiting.\n", __func__, base_vha->host_no));
                return QLA_FUNCTION_TIMEOUT;
        }

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

        DEBUG11(printk("scsi(%ld): prepare to issue mbox cmd=0x%x.\n",
            base_vha->host_no, mcp->mb[0]));

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Load mailbox registers. */
        if (IS_FWI2_CAPABLE(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;

        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)
                        WRT_REG_WORD(optr, *iptr);

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

#if defined(QL_DEBUG_LEVEL_1)
        printk("%s(%ld): Loaded MBX registers (displayed in bytes) = \n",
            __func__, base_vha->host_no);
        qla2x00_dump_buffer((uint8_t *)mcp->mb, 16);
        printk("\n");
        qla2x00_dump_buffer(((uint8_t *)mcp->mb + 0x10), 16);
        printk("\n");
        qla2x00_dump_buffer(((uint8_t *)mcp->mb + 0x20), 8);
        printk("\n");
        printk("%s(%ld): I/O address = %p.\n", __func__, base_vha->host_no,
                optr);
        qla2x00_dump_regs(base_vha);
#endif

        /* 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 */
        DEBUG11(printk("%s(%ld): going to unlock irq & waiting for interrupt. "
            "jiffies=%lx.\n", __func__, base_vha->host_no, 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_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_for_completion_timeout(&ha->mbx_intr_comp, mcp->tov * HZ);

                clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);

        } else {
                DEBUG3_11(printk("%s(%ld): cmd=%x POLLING MODE.\n", __func__,
                    base_vha->host_no, command));

                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 (command != MBC_LOAD_RISC_RAM_EXTENDED &&
                            !ha->flags.mbox_int)
                                msleep(10);
                } /* while */
        }

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

                DEBUG3_11(printk("%s(%ld): cmd %x completed.\n", __func__,
                    base_vha->host_no, command));

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

                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;
                for (cnt = 0; cnt < ha->mbx_count; cnt++) {
                        if (mboxes & BIT_0)
                                *iptr2 = *iptr;

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

#if defined(QL_DEBUG_LEVEL_2) || defined(QL_DEBUG_LEVEL_3) || \
                defined(QL_DEBUG_LEVEL_11)
                uint16_t mb0;
                uint32_t ictrl;

                if (IS_FWI2_CAPABLE(ha)) {
                        mb0 = RD_REG_WORD(&reg->isp24.mailbox0);
                        ictrl = RD_REG_DWORD(&reg->isp24.ictrl);
                } else {
                        mb0 = RD_MAILBOX_REG(ha, &reg->isp, 0);
                        ictrl = RD_REG_WORD(&reg->isp.ictrl);
                }
                printk("%s(%ld): **** MB Command Timeout for cmd %x ****\n",
                    __func__, base_vha->host_no, command);
                printk("%s(%ld): icontrol=%x jiffies=%lx\n", __func__,
                    base_vha->host_no, ictrl, jiffies);
                printk("%s(%ld): *** mailbox[0] = 0x%x ***\n", __func__,
                    base_vha->host_no, mb0);
                qla2x00_dump_regs(base_vha);
#endif

                rval = QLA_FUNCTION_TIMEOUT;
        }

        ha->flags.mbox_busy = 0;

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

        if ((abort_active || !io_lock_on) && !IS_NOPOLLING_TYPE(ha)) {
                DEBUG11(printk("%s(%ld): checking for additional resp "
                    "interrupt.\n", __func__, base_vha->host_no));

                /* 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)) {
                        /* not in dpc. schedule it for dpc to take over. */
                        DEBUG(printk("%s(%ld): timeout schedule "
                        "isp_abort_needed.\n", __func__,
                        base_vha->host_no));
                        DEBUG2_3_11(printk("%s(%ld): timeout schedule "
                        "isp_abort_needed.\n", __func__,
                        base_vha->host_no));
                        qla_printk(KERN_WARNING, ha,
                            "Mailbox command timeout occurred. Scheduling ISP "
                            "abort.\n");
                        set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
                        qla2xxx_wake_dpc(vha);
                } else if (!abort_active) {
                        /* call abort directly since we are in the DPC thread */
                        DEBUG(printk("%s(%ld): timeout calling abort_isp\n",
                            __func__, base_vha->host_no));
                        DEBUG2_3_11(printk("%s(%ld): timeout calling "
                            "abort_isp\n", __func__, base_vha->host_no));
                        qla_printk(KERN_WARNING, ha,
                            "Mailbox command timeout occurred. Issuing ISP "
                            "abort.\n");

                        set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
                        clear_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
                        if (qla2x00_abort_isp(base_vha)) {
                                /* Failed. retry later. */
                                set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
                        }
                        clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
                        DEBUG(printk("%s(%ld): finished abort_isp\n", __func__,
                            base_vha->host_no));
                        DEBUG2_3_11(printk("%s(%ld): finished abort_isp\n",
                            __func__, base_vha->host_no));
                }
        }

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

        if (rval) {
                DEBUG2_3_11(printk("%s(%ld): **** FAILED. mbx0=%x, mbx1=%x, "
                    "mbx2=%x, cmd=%x ****\n", __func__, base_vha->host_no,
                    mcp->mb[0], mcp->mb[1], mcp->mb[2], command));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__,
                base_vha->host_no));
        }

        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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x.\n", __func__,
                    vha->host_no, rval, mcp->mb[0]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

/*
 * 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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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;
                mcp->out_mb |= MBX_4|MBX_3|MBX_2|MBX_1;
                mcp->in_mb |= 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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x.\n", __func__,
                    vha->host_no, rval, mcp->mb[0]));
        } else {
                if (IS_FWI2_CAPABLE(ha)) {
                        DEBUG11(printk("%s(%ld): done exchanges=%x.\n",
                            __func__, vha->host_no, mcp->mb[1]));
                } else {
                        DEBUG11(printk("%s(%ld): done.\n", __func__,
                            vha->host_no));
                }
        }

        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, uint16_t *major, uint16_t *minor,
    uint16_t *subminor, uint16_t *attributes, uint32_t *memory, uint8_t *mpi,
    uint32_t *mpi_caps, uint8_t *phy)
{
        int             rval;
        mbx_cmd_t       mc;
        mbx_cmd_t       *mcp = &mc;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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))
                mcp->in_mb |= MBX_13|MBX_12|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. */
        *major = mcp->mb[1];
        *minor = mcp->mb[2];
        *subminor = mcp->mb[3];
        *attributes = mcp->mb[6];
        if (IS_QLA2100(vha->hw) || IS_QLA2200(vha->hw))
                *memory = 0x1FFFF;                      /* Defaults to 128KB. */
        else
                *memory = (mcp->mb[5] << 16) | mcp->mb[4];
        if (IS_QLA81XX(vha->hw)) {
                mpi[0] = mcp->mb[10] & 0xff;
                mpi[1] = mcp->mb[11] >> 8;
                mpi[2] = mcp->mb[11] & 0xff;
                *mpi_caps = (mcp->mb[12] << 16) | mcp->mb[13];
                phy[0] = mcp->mb[8] & 0xff;
                phy[1] = mcp->mb[9] >> 8;
                phy[2] = mcp->mb[9] & 0xff;
        }
failed:
        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        } else {
                /*EMPTY*/
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }
        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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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*/
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        } else {
                fwopts[0] = mcp->mb[0];
                fwopts[1] = mcp->mb[1];
                fwopts[2] = mcp->mb[2];
                fwopts[3] = mcp->mb[3];

                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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;
        } 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*/
                DEBUG2_3_11(printk("%s(%ld): failed=%x (%x/%x).\n", __func__,
                    vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                /*EMPTY*/
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_mbx_reg_test(%ld): entered.\n", vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_mbx_reg_test(%ld): failed=%x.\n",
                    vha->host_no, rval));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_mbx_reg_test(%ld): done.\n",
                    vha->host_no));
        }

        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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x chk sum=%x.\n", __func__,
                    vha->host_no, rval, IS_FWI2_CAPABLE(vha->hw) ?
                    (mcp->mb[2] << 16) | mcp->mb[1]: mcp->mb[1]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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.
 */
static 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;

        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*/
                DEBUG(printk("qla2x00_issue_iocb(%ld): failed rval 0x%x\n",
                    vha->host_no, 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;
        }

        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 = vha->req;

        DEBUG11(printk("qla2x00_abort_command(%ld): entered.\n", vha->host_no));

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

        if (handle == MAX_OUTSTANDING_COMMANDS) {
                /* 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)sp->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) {
                DEBUG2_3_11(printk("qla2x00_abort_command(%ld): failed=%x.\n",
                    vha->host_no, rval));
        } else {
                DEBUG11(printk("qla2x00_abort_command(%ld): done.\n",
                    vha->host_no));
        }

        return rval;
}

int
qla2x00_abort_target(struct fc_port *fcport, unsigned int 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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, fcport->vha->host_no));

        l = l;
        vha = fcport->vha;
        req = vha->hw->req_q_map[tag];
        rsp = vha->hw->rsp_q_map[tag];
        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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        }

        /* Issue marker IOCB. */
        rval2 = qla2x00_marker(vha, req, rsp, fcport->loop_id, 0,
                                                        MK_SYNC_ID);
        if (rval2 != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue Marker IOCB "
                    "(%x).\n", __func__, vha->host_no, rval2));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

int
qla2x00_lun_reset(struct fc_port *fcport, unsigned int 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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, fcport->vha->host_no));

        vha = fcport->vha;
        req = vha->hw->req_q_map[tag];
        rsp = vha->hw->rsp_q_map[tag];
        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] = 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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        }

        /* Issue marker IOCB. */
        rval2 = qla2x00_marker(vha, req, rsp, fcport->loop_id, l,
                                                                MK_SYNC_ID_LUN);
        if (rval2 != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue Marker IOCB "
                    "(%x).\n", __func__, vha->host_no, rval2));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_get_adapter_id(%ld): entered.\n",
            vha->host_no));

        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_QLA81XX(vha->hw))
                mcp->in_mb |= MBX_13|MBX_12|MBX_11|MBX_10;
        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*/
                DEBUG2_3_11(printk("qla2x00_get_adapter_id(%ld): failed=%x.\n",
                    vha->host_no, rval));
        } else {
                DEBUG11(printk("qla2x00_get_adapter_id(%ld): done.\n",
                    vha->host_no));

                if (IS_QLA81XX(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;
                }
        }

        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;

        DEBUG11(printk("qla2x00_get_retry_cnt(%ld): entered.\n",
                        vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_get_retry_cnt(%ld): failed = %x.\n",
                    vha->host_no, 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;
                }

                DEBUG11(printk("qla2x00_get_retry_cnt(%ld): done. mb3=%d "
                    "ratov=%d.\n", vha->host_no, 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;

        DEBUG11(printk("qla2x00_init_firmware(%ld): entered.\n",
            vha->host_no));

        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 (IS_QLA81XX(ha) && 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;
        }
        mcp->in_mb = MBX_0;
        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*/
                DEBUG2_3_11(printk("qla2x00_init_firmware(%ld): failed=%x "
                    "mb0=%x.\n",
                    vha->host_no, rval, mcp->mb[0]));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_init_firmware(%ld): done.\n",
                    vha->host_no));
        }

        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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        pd24 = NULL;
        pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &pd_dma);
        if (pd  == NULL) {
                DEBUG2_3(printk("%s(%ld): failed to allocate Port Database "
                    "structure.\n", __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(pd, 0, max(PORT_DATABASE_SIZE, PORT_DATABASE_24XX_SIZE));

        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)) {
                pd24 = (struct port_database_24xx *) pd;

                /* Check for logged in state. */
                if (pd24->current_login_state != PDS_PRLI_COMPLETE &&
                    pd24->last_login_state != PDS_PRLI_COMPLETE) {
                        DEBUG2(printk("%s(%ld): Unable to verify "
                            "login-state (%x/%x) for loop_id %x\n",
                            __func__, vha->host_no,
                            pd24->current_login_state,
                            pd24->last_login_state, fcport->loop_id));
                        rval = QLA_FUNCTION_FAILED;
                        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;
        } else {
                /* Check for logged in state. */
                if (pd->master_state != PD_STATE_PORT_LOGGED_IN &&
                    pd->slave_state != PD_STATE_PORT_LOGGED_IN) {
                        rval = QLA_FUNCTION_FAILED;
                        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);

        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
                    __func__, vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_get_firmware_state(%ld): entered.\n",
            vha->host_no));

        mcp->mb[0] = MBC_GET_FIRMWARE_STATE;
        mcp->out_mb = MBX_0;
        if (IS_FWI2_CAPABLE(vha->hw))
                mcp->in_mb = 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];
                states[3] = mcp->mb[4];
                states[4] = mcp->mb[5];
        }

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                DEBUG2_3_11(printk("qla2x00_get_firmware_state(%ld): "
                    "failed=%x.\n", vha->host_no, rval));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_get_firmware_state(%ld): done.\n",
                    vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_get_port_name(%ld): entered.\n",
            vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_get_port_name(%ld): failed=%x.\n",
                    vha->host_no, 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]);
                }

                DEBUG11(printk("qla2x00_get_port_name(%ld): done.\n",
                    vha->host_no));
        }

        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;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        if (IS_QLA81XX(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*/
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n",
                    __func__, vha->host_no, rval));
        } else {
                /*EMPTY*/
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_send_sns(%ld): entered.\n",
            vha->host_no));

        DEBUG11(printk("qla2x00_send_sns: 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*/
                DEBUG(printk("qla2x00_send_sns(%ld): failed=%x mb[0]=%x "
                    "mb[1]=%x.\n", vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
                DEBUG2_3_11(printk("qla2x00_send_sns(%ld): failed=%x mb[0]=%x "
                    "mb[1]=%x.\n", vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_send_sns(%ld): done.\n", vha->host_no));
        }

        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;
        struct rsp_que *rsp;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        if (ha->flags.cpu_affinity_enabled)
                req = ha->req_q_map[0];
        else
                req = vha->req;
        rsp = req->rsp;

        lg = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &lg_dma);
        if (lg == NULL) {
                DEBUG2_3(printk("%s(%ld): failed to allocate Login IOCB.\n",
                    __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(lg, 0, sizeof(struct logio_entry_24xx));

        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 = __constant_cpu_to_le16(LCF_COMMAND_PLOGI);
        if (opt & BIT_0)
                lg->control_flags |= __constant_cpu_to_le16(LCF_COND_PLOGI);
        if (opt & BIT_1)
                lg->control_flags |= __constant_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(vha, lg, lg_dma, 0);
        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue Login IOCB "
                    "(%x).\n", __func__, vha->host_no, rval));
        } else if (lg->entry_status != 0) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- error status (%x).\n", __func__, vha->host_no,
                    lg->entry_status));
                rval = QLA_FUNCTION_FAILED;
        } else if (lg->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
                iop[0] = le32_to_cpu(lg->io_parameter[0]);
                iop[1] = le32_to_cpu(lg->io_parameter[1]);

                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- completion status (%x)  ioparam=%x/%x.\n", __func__,
                    vha->host_no, 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 {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));

                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. */
        }

        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;

        DEBUG11(printk("qla2x00_login_fabric(%ld): entered.\n", vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_login_fabric(%ld): failed=%x "
                    "mb[0]=%x mb[1]=%x mb[2]=%x.\n", vha->host_no, rval,
                    mcp->mb[0], mcp->mb[1], mcp->mb[2]));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_login_fabric(%ld): done.\n",
                    vha->host_no));
        }

        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;

        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);

        DEBUG3(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        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;

                DEBUG(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x "
                    "mb[6]=%x mb[7]=%x.\n", __func__, vha->host_no, rval,
                    mcp->mb[0], mcp->mb[1], mcp->mb[6], mcp->mb[7]));
                DEBUG2_3(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x "
                    "mb[6]=%x mb[7]=%x.\n", __func__, vha->host_no, rval,
                    mcp->mb[0], mcp->mb[1], mcp->mb[6], mcp->mb[7]));
        } else {
                /*EMPTY*/
                DEBUG3(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;
        struct rsp_que *rsp;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        lg = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &lg_dma);
        if (lg == NULL) {
                DEBUG2_3(printk("%s(%ld): failed to allocate Logout IOCB.\n",
                    __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(lg, 0, sizeof(struct logio_entry_24xx));

        if (ql2xmaxqueues > 1)
                req = ha->req_q_map[0];
        else
                req = vha->req;
        rsp = req->rsp;
        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 =
            __constant_cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
        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(vha, lg, lg_dma, 0);
        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue Logout IOCB "
                    "(%x).\n", __func__, vha->host_no, rval));
        } else if (lg->entry_status != 0) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- error status (%x).\n", __func__, vha->host_no,
                    lg->entry_status));
                rval = QLA_FUNCTION_FAILED;
        } else if (lg->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
                DEBUG2_3_11(printk("%s(%ld %d): failed to complete IOCB "
                    "-- completion status (%x)  ioparam=%x/%x.\n", __func__,
                    vha->host_no, vha->vp_idx, le16_to_cpu(lg->comp_status),
                    le32_to_cpu(lg->io_parameter[0]),
                    le32_to_cpu(lg->io_parameter[1])));
        } else {
                /*EMPTY*/
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_fabric_logout(%ld): entered.\n",
            vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_fabric_logout(%ld): failed=%x "
                    "mbx1=%x.\n", vha->host_no, rval, mcp->mb[1]));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_fabric_logout(%ld): done.\n",
                    vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_full_login_lip(%ld): entered.\n",
            vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_full_login_lip(%ld): failed=%x.\n",
                    vha->host_no, rval));
        } else {
                /*EMPTY*/
                DEBUG11(printk("qla2x00_full_login_lip(%ld): done.\n",
                    vha->host_no));
        }

        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;

        DEBUG11(printk("qla2x00_get_id_list(%ld): entered.\n",
            vha->host_no));

        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*/
                DEBUG2_3_11(printk("qla2x00_get_id_list(%ld): failed=%x.\n",
                    vha->host_no, rval));
        } else {
                *entries = mcp->mb[1];
                DEBUG11(printk("qla2x00_get_id_list(%ld): done.\n",
                    vha->host_no));
        }

        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, uint16_t *cur_xchg_cnt,
    uint16_t *orig_xchg_cnt, uint16_t *cur_iocb_cnt,
    uint16_t *orig_iocb_cnt, uint16_t *max_npiv_vports)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

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

        if (rval != QLA_SUCCESS) {
                /*EMPTY*/
                DEBUG2_3_11(printk("%s(%ld): failed = %x.\n", __func__,
                    vha->host_no, mcp->mb[0]));
        } else {
                DEBUG11(printk("%s(%ld): done. mb1=%x mb2=%x mb3=%x mb6=%x "
                    "mb7=%x mb10=%x mb11=%x.\n", __func__, vha->host_no,
                    mcp->mb[1], mcp->mb[2], mcp->mb[3], mcp->mb[6], mcp->mb[7],
                    mcp->mb[10], mcp->mb[11]));

                if (cur_xchg_cnt)
                        *cur_xchg_cnt = mcp->mb[3];
                if (orig_xchg_cnt)
                        *orig_xchg_cnt = mcp->mb[6];
                if (cur_iocb_cnt)
                        *cur_iocb_cnt = mcp->mb[7];
                if (orig_iocb_cnt)
                        *orig_iocb_cnt = mcp->mb[10];
                if (vha->hw->flags.npiv_supported && max_npiv_vports)
                        *max_npiv_vports = mcp->mb[11];
        }

        return (rval);
}

#if defined(QL_DEBUG_LEVEL_3)
/*
 * 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;

        pmap = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &pmap_dma);
        if (pmap  == NULL) {
                DEBUG2_3_11(printk("%s(%ld): **** Mem Alloc Failed ****",
                    __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(pmap, 0, FCAL_MAP_SIZE);

        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) {
                DEBUG11(printk("%s(%ld): (mb0=%x/mb1=%x) FC/AL Position Map "
                    "size (%x)\n", __func__, vha->host_no, mcp->mb[0],
                    mcp->mb[1], (unsigned)pmap[0]));
                DEBUG11(qla2x00_dump_buffer(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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}
#endif

/*
 * 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 *siter, *diter, dwords;
        struct qla_hw_data *ha = vha->hw;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_GET_LINK_STATUS;
        mcp->mb[2] = MSW(stats_dma);
        mcp->mb[3] = LSW(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) {
                        DEBUG2_3_11(printk("%s(%ld): cmd failed. mbx0=%x.\n",
                            __func__, vha->host_no, mcp->mb[0]));
                        rval = QLA_FUNCTION_FAILED;
                } else {
                        /* Copy over data -- firmware data is LE. */
                        dwords = offsetof(struct link_statistics, unused1) / 4;
                        siter = diter = &stats->link_fail_cnt;
                        while (dwords--)
                                *diter++ = le32_to_cpu(*siter++);
                }
        } else {
                /* Failed. */
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        }

        return rval;
}

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

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_GET_LINK_PRIV_STATS;
        mcp->mb[2] = MSW(stats_dma);
        mcp->mb[3] = LSW(stats_dma);
        mcp->mb[6] = MSW(MSD(stats_dma));
        mcp->mb[7] = LSW(MSD(stats_dma));
        mcp->mb[8] = sizeof(struct link_statistics) / 4;
        mcp->mb[9] = vha->vp_idx;
        mcp->mb[10] = 0;
        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
        mcp->in_mb = MBX_2|MBX_1|MBX_0;
        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) {
                        DEBUG2_3_11(printk("%s(%ld): cmd failed. mbx0=%x.\n",
                            __func__, vha->host_no, mcp->mb[0]));
                        rval = QLA_FUNCTION_FAILED;
                } else {
                        /* Copy over data -- firmware data is LE. */
                        dwords = sizeof(struct link_statistics) / 4;
                        siter = diter = &stats->link_fail_cnt;
                        while (dwords--)
                                *diter++ = le32_to_cpu(*siter++);
                }
        } else {
                /* Failed. */
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        }

        return rval;
}

int
qla24xx_abort_command(srb_t *sp)
{
        int             rval;
        unsigned long   flags = 0;

        struct abort_entry_24xx *abt;
        dma_addr_t      abt_dma;
        uint32_t        handle;
        fc_port_t       *fcport = sp->fcport;
        struct scsi_qla_host *vha = fcport->vha;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = vha->req;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        spin_lock_irqsave(&ha->hardware_lock, flags);
        for (handle = 1; handle < MAX_OUTSTANDING_COMMANDS; handle++) {
                if (req->outstanding_cmds[handle] == sp)
                        break;
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
        if (handle == MAX_OUTSTANDING_COMMANDS) {
                /* Command not found. */
                return QLA_FUNCTION_FAILED;
        }

        abt = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &abt_dma);
        if (abt == NULL) {
                DEBUG2_3(printk("%s(%ld): failed to allocate Abort IOCB.\n",
                    __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(abt, 0, sizeof(struct abort_entry_24xx));

        abt->entry_type = ABORT_IOCB_TYPE;
        abt->entry_count = 1;
        abt->handle = MAKE_HANDLE(req->id, abt->handle);
        abt->nport_handle = cpu_to_le16(fcport->loop_id);
        abt->handle_to_abort = handle;
        abt->port_id[0] = fcport->d_id.b.al_pa;
        abt->port_id[1] = fcport->d_id.b.area;
        abt->port_id[2] = fcport->d_id.b.domain;
        abt->vp_index = fcport->vp_idx;

        abt->req_que_no = cpu_to_le16(req->id);

        rval = qla2x00_issue_iocb(vha, abt, abt_dma, 0);
        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue IOCB (%x).\n",
                    __func__, vha->host_no, rval));
        } else if (abt->entry_status != 0) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- error status (%x).\n", __func__, vha->host_no,
                    abt->entry_status));
                rval = QLA_FUNCTION_FAILED;
        } else if (abt->nport_handle != __constant_cpu_to_le16(0)) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- completion status (%x).\n", __func__, vha->host_no,
                    le16_to_cpu(abt->nport_handle)));
                rval = QLA_FUNCTION_FAILED;
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        dma_pool_free(ha->s_dma_pool, abt, abt_dma);

        return rval;
}

struct tsk_mgmt_cmd {
        union {
                struct tsk_mgmt_entry tsk;
                struct sts_entry_24xx sts;
        } p;
};

static int
__qla24xx_issue_tmf(char *name, uint32_t type, struct fc_port *fcport,
    unsigned int l, int tag)
{
        int             rval, rval2;
        struct tsk_mgmt_cmd *tsk;
        dma_addr_t      tsk_dma;
        scsi_qla_host_t *vha;
        struct qla_hw_data *ha;
        struct req_que *req;
        struct rsp_que *rsp;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, fcport->vha->host_no));

        vha = fcport->vha;
        ha = vha->hw;
        req = vha->req;
        if (ha->flags.cpu_affinity_enabled)
                rsp = ha->rsp_q_map[tag + 1];
        else
                rsp = req->rsp;
        tsk = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &tsk_dma);
        if (tsk == NULL) {
                DEBUG2_3(printk("%s(%ld): failed to allocate Task Management "
                    "IOCB.\n", __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(tsk, 0, sizeof(struct tsk_mgmt_cmd));

        tsk->p.tsk.entry_type = TSK_MGMT_IOCB_TYPE;
        tsk->p.tsk.entry_count = 1;
        tsk->p.tsk.handle = MAKE_HANDLE(req->id, tsk->p.tsk.handle);
        tsk->p.tsk.nport_handle = cpu_to_le16(fcport->loop_id);
        tsk->p.tsk.timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
        tsk->p.tsk.control_flags = cpu_to_le32(type);
        tsk->p.tsk.port_id[0] = fcport->d_id.b.al_pa;
        tsk->p.tsk.port_id[1] = fcport->d_id.b.area;
        tsk->p.tsk.port_id[2] = fcport->d_id.b.domain;
        tsk->p.tsk.vp_index = fcport->vp_idx;
        if (type == TCF_LUN_RESET) {
                int_to_scsilun(l, &tsk->p.tsk.lun);
                host_to_fcp_swap((uint8_t *)&tsk->p.tsk.lun,
                    sizeof(tsk->p.tsk.lun));
        }

        rval = qla2x00_issue_iocb(vha, tsk, tsk_dma, 0);
        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue %s Reset IOCB "
                    "(%x).\n", __func__, vha->host_no, name, rval));
        } else if (tsk->p.sts.entry_status != 0) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- error status (%x).\n", __func__, vha->host_no,
                    tsk->p.sts.entry_status));
                rval = QLA_FUNCTION_FAILED;
        } else if (tsk->p.sts.comp_status !=
            __constant_cpu_to_le16(CS_COMPLETE)) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- completion status (%x).\n", __func__,
                    vha->host_no, le16_to_cpu(tsk->p.sts.comp_status)));
                rval = QLA_FUNCTION_FAILED;
        }

        /* Issue marker IOCB. */
        rval2 = qla2x00_marker(vha, req, rsp, fcport->loop_id, l,
            type == TCF_LUN_RESET ? MK_SYNC_ID_LUN: MK_SYNC_ID);
        if (rval2 != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue Marker IOCB "
                    "(%x).\n", __func__, vha->host_no, rval2));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        dma_pool_free(ha->s_dma_pool, tsk, tsk_dma);

        return rval;
}

int
qla24xx_abort_target(struct fc_port *fcport, unsigned int l, int tag)
{
        return __qla24xx_issue_tmf("Target", TCF_TARGET_RESET, fcport, l, tag);
}

int
qla24xx_lun_reset(struct fc_port *fcport, unsigned int l, int tag)
{
        return __qla24xx_issue_tmf("Lun", TCF_LUN_RESET, fcport, l, tag);
}

int
qla2x00_system_error(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;
        struct qla_hw_data *ha = vha->hw;

        if (!IS_QLA23XX(ha) && !IS_FWI2_CAPABLE(ha))
                return QLA_FUNCTION_FAILED;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_GEN_SYSTEM_ERROR;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_0;
        mcp->tov = 5;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

/**
 * qla2x00_set_serdes_params() -
 * @ha: HA context
 *
 * Returns
 */
int
qla2x00_set_serdes_params(scsi_qla_host_t *vha, uint16_t sw_em_1g,
    uint16_t sw_em_2g, uint16_t sw_em_4g)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_SERDES_PARAMS;
        mcp->mb[1] = BIT_0;
        mcp->mb[2] = sw_em_1g | BIT_15;
        mcp->mb[3] = sw_em_2g | BIT_15;
        mcp->mb[4] = sw_em_4g | BIT_15;
        mcp->out_mb = MBX_4|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*/
                DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__,
                    vha->host_no, rval, mcp->mb[0]));
        } else {
                /*EMPTY*/
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

int
qla2x00_stop_firmware(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

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

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_STOP_FIRMWARE;
        mcp->out_mb = MBX_0;
        mcp->in_mb = MBX_0;
        mcp->tov = 5;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
                if (mcp->mb[0] == MBS_INVALID_COMMAND)
                        rval = QLA_INVALID_COMMAND;
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

int
qla2x00_enable_eft_trace(scsi_qla_host_t *vha, dma_addr_t eft_dma,
    uint16_t buffers)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

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

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_TRACE_CONTROL;
        mcp->mb[1] = TC_EFT_ENABLE;
        mcp->mb[2] = LSW(eft_dma);
        mcp->mb[3] = MSW(eft_dma);
        mcp->mb[4] = LSW(MSD(eft_dma));
        mcp->mb[5] = MSW(MSD(eft_dma));
        mcp->mb[6] = buffers;
        mcp->mb[7] = TC_AEN_DISABLE;
        mcp->out_mb = MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
        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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
                    __func__, vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

int
qla2x00_disable_eft_trace(scsi_qla_host_t *vha)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

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

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_TRACE_CONTROL;
        mcp->mb[1] = TC_EFT_DISABLE;
        mcp->out_mb = MBX_1|MBX_0;
        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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
                    __func__, vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

int
qla2x00_enable_fce_trace(scsi_qla_host_t *vha, dma_addr_t fce_dma,
    uint16_t buffers, uint16_t *mb, uint32_t *dwords)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        if (!IS_QLA25XX(vha->hw) && !IS_QLA81XX(vha->hw))
                return QLA_FUNCTION_FAILED;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_TRACE_CONTROL;
        mcp->mb[1] = TC_FCE_ENABLE;
        mcp->mb[2] = LSW(fce_dma);
        mcp->mb[3] = MSW(fce_dma);
        mcp->mb[4] = LSW(MSD(fce_dma));
        mcp->mb[5] = MSW(MSD(fce_dma));
        mcp->mb[6] = buffers;
        mcp->mb[7] = TC_AEN_DISABLE;
        mcp->mb[8] = 0;
        mcp->mb[9] = TC_FCE_DEFAULT_RX_SIZE;
        mcp->mb[10] = TC_FCE_DEFAULT_TX_SIZE;
        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|
            MBX_1|MBX_0;
        mcp->in_mb = 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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
                    __func__, vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));

                if (mb)
                        memcpy(mb, mcp->mb, 8 * sizeof(*mb));
                if (dwords)
                        *dwords = buffers;
        }

        return rval;
}

int
qla2x00_disable_fce_trace(scsi_qla_host_t *vha, uint64_t *wr, uint64_t *rd)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

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

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_TRACE_CONTROL;
        mcp->mb[1] = TC_FCE_DISABLE;
        mcp->mb[2] = TC_FCE_DISABLE_TRACE;
        mcp->out_mb = MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_9|MBX_8|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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
                    __func__, vha->host_no, rval, mcp->mb[0], mcp->mb[1]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));

                if (wr)
                        *wr = (uint64_t) mcp->mb[5] << 48 |
                            (uint64_t) mcp->mb[4] << 32 |
                            (uint64_t) mcp->mb[3] << 16 |
                            (uint64_t) mcp->mb[2];
                if (rd)
                        *rd = (uint64_t) mcp->mb[9] << 48 |
                            (uint64_t) mcp->mb[8] << 32 |
                            (uint64_t) mcp->mb[7] << 16 |
                            (uint64_t) mcp->mb[6];
        }

        return rval;
}

int
qla2x00_read_sfp(scsi_qla_host_t *vha, dma_addr_t sfp_dma, uint16_t addr,
    uint16_t off, uint16_t count)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

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

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_READ_SFP;
        mcp->mb[1] = addr;
        mcp->mb[2] = MSW(sfp_dma);
        mcp->mb[3] = LSW(sfp_dma);
        mcp->mb[6] = MSW(MSD(sfp_dma));
        mcp->mb[7] = LSW(MSD(sfp_dma));
        mcp->mb[8] = count;
        mcp->mb[9] = off;
        mcp->mb[10] = 0;
        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|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) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__,
                    vha->host_no, rval, mcp->mb[0]));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

int
qla2x00_set_idma_speed(scsi_qla_host_t *vha, uint16_t loop_id,
    uint16_t port_speed, uint16_t *mb)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        if (!IS_IIDMA_CAPABLE(vha->hw))
                return QLA_FUNCTION_FAILED;

        DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));

        mcp->mb[0] = MBC_PORT_PARAMS;
        mcp->mb[1] = loop_id;
        mcp->mb[2] = BIT_0;
        if (IS_QLA81XX(vha->hw))
                mcp->mb[3] = port_speed & (BIT_5|BIT_4|BIT_3|BIT_2|BIT_1|BIT_0);
        else
                mcp->mb[3] = port_speed & (BIT_2|BIT_1|BIT_0);
        mcp->mb[9] = vha->vp_idx;
        mcp->out_mb = MBX_9|MBX_3|MBX_2|MBX_1|MBX_0;
        mcp->in_mb = MBX_3|MBX_1|MBX_0;
        mcp->tov = MBX_TOV_SECONDS;
        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[3] = mcp->mb[3];
        }

        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                    vha->host_no, rval));
        } else {
                DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
        }

        return rval;
}

void
qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
        struct vp_rpt_id_entry_24xx *rptid_entry)
{
        uint8_t vp_idx;
        uint16_t stat = le16_to_cpu(rptid_entry->vp_idx);
        struct qla_hw_data *ha = vha->hw;
        scsi_qla_host_t *vp;
        scsi_qla_host_t *tvp;

        if (rptid_entry->entry_status != 0)
                return;

        if (rptid_entry->format == 0) {
                DEBUG15(printk("%s:format 0 : scsi(%ld) number of VPs setup %d,"
                        " number of VPs acquired %d\n", __func__, vha->host_no,
                        MSB(le16_to_cpu(rptid_entry->vp_count)),
                        LSB(le16_to_cpu(rptid_entry->vp_count))));
                DEBUG15(printk("%s primary port id %02x%02x%02x\n", __func__,
                        rptid_entry->port_id[2], rptid_entry->port_id[1],
                        rptid_entry->port_id[0]));
        } else if (rptid_entry->format == 1) {
                vp_idx = LSB(stat);
                DEBUG15(printk("%s:format 1: scsi(%ld): VP[%d] enabled "
                    "- status %d - "
                    "with port id %02x%02x%02x\n", __func__, vha->host_no,
                    vp_idx, MSB(stat),
                    rptid_entry->port_id[2], rptid_entry->port_id[1],
                    rptid_entry->port_id[0]));
                if (vp_idx == 0)
                        return;

                if (MSB(stat) == 1) {
                        DEBUG2(printk("scsi(%ld): Could not acquire ID for "
                            "VP[%d].\n", vha->host_no, vp_idx));
                        return;
                }

                list_for_each_entry_safe(vp, tvp, &ha->vp_list, list)
                        if (vp_idx == vp->vp_idx)
                                break;
                if (!vp)
                        return;

                vp->d_id.b.domain = rptid_entry->port_id[2];
                vp->d_id.b.area =  rptid_entry->port_id[1];
                vp->d_id.b.al_pa = rptid_entry->port_id[0];

                /*
                 * Cannot configure here as we are still sitting on the
                 * response queue. Handle it in dpc context.
                 */
                set_bit(VP_IDX_ACQUIRED, &vp->vp_flags);
                set_bit(VP_DPC_NEEDED, &vha->dpc_flags);

                qla2xxx_wake_dpc(vha);
        }
}

/*
 * qla24xx_modify_vp_config
 *      Change VP configuration for vha
 *
 * Input:
 *      vha = adapter block pointer.
 *
 * Returns:
 *      qla2xxx local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla24xx_modify_vp_config(scsi_qla_host_t *vha)
{
        int             rval;
        struct vp_config_entry_24xx *vpmod;
        dma_addr_t      vpmod_dma;
        struct qla_hw_data *ha = vha->hw;
        struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);

        /* This can be called by the parent */

        vpmod = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &vpmod_dma);
        if (!vpmod) {
                DEBUG2_3(printk("%s(%ld): failed to allocate Modify VP "
                    "IOCB.\n", __func__, vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }

        memset(vpmod, 0, sizeof(struct vp_config_entry_24xx));
        vpmod->entry_type = VP_CONFIG_IOCB_TYPE;
        vpmod->entry_count = 1;
        vpmod->command = VCT_COMMAND_MOD_ENABLE_VPS;
        vpmod->vp_count = 1;
        vpmod->vp_index1 = vha->vp_idx;
        vpmod->options_idx1 = BIT_3|BIT_4|BIT_5;
        memcpy(vpmod->node_name_idx1, vha->node_name, WWN_SIZE);
        memcpy(vpmod->port_name_idx1, vha->port_name, WWN_SIZE);
        vpmod->entry_count = 1;

        rval = qla2x00_issue_iocb(base_vha, vpmod, vpmod_dma, 0);
        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue VP config IOCB"
                        "(%x).\n", __func__, base_vha->host_no, rval));
        } else if (vpmod->comp_status != 0) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                        "-- error status (%x).\n", __func__, base_vha->host_no,
                        vpmod->comp_status));
                rval = QLA_FUNCTION_FAILED;
        } else if (vpmod->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- completion status (%x).\n", __func__, base_vha->host_no,
                    le16_to_cpu(vpmod->comp_status)));
                rval = QLA_FUNCTION_FAILED;
        } else {
                /* EMPTY */
                DEBUG11(printk("%s(%ld): done.\n", __func__,
                                                        base_vha->host_no));
                fc_vport_set_state(vha->fc_vport, FC_VPORT_INITIALIZING);
        }
        dma_pool_free(ha->s_dma_pool, vpmod, vpmod_dma);

        return rval;
}

/*
 * qla24xx_control_vp
 *      Enable a virtual port for given host
 *
 * Input:
 *      ha = adapter block pointer.
 *      vhba = virtual adapter (unused)
 *      index = index number for enabled VP
 *
 * Returns:
 *      qla2xxx local function return status code.
 *
 * Context:
 *      Kernel context.
 */
int
qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
{
        int             rval;
        int             map, pos;
        struct vp_ctrl_entry_24xx   *vce;
        dma_addr_t      vce_dma;
        struct qla_hw_data *ha = vha->hw;
        int     vp_index = vha->vp_idx;
        struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);

        DEBUG11(printk("%s(%ld): entered. Enabling index %d\n", __func__,
            vha->host_no, vp_index));

        if (vp_index == 0 || vp_index >= ha->max_npiv_vports)
                return QLA_PARAMETER_ERROR;

        vce = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &vce_dma);
        if (!vce) {
                DEBUG2_3(printk("%s(%ld): "
                    "failed to allocate VP Control IOCB.\n", __func__,
                    base_vha->host_no));
                return QLA_MEMORY_ALLOC_FAILED;
        }
        memset(vce, 0, sizeof(struct vp_ctrl_entry_24xx));

        vce->entry_type = VP_CTRL_IOCB_TYPE;
        vce->entry_count = 1;
        vce->command = cpu_to_le16(cmd);
        vce->vp_count = __constant_cpu_to_le16(1);

        /* index map in firmware starts with 1; decrement index
         * this is ok as we never use index 0
         */
        map = (vp_index - 1) / 8;
        pos = (vp_index - 1) & 7;
        mutex_lock(&ha->vport_lock);
        vce->vp_idx_map[map] |= 1 << pos;
        mutex_unlock(&ha->vport_lock);

        rval = qla2x00_issue_iocb(base_vha, vce, vce_dma, 0);
        if (rval != QLA_SUCCESS) {
                DEBUG2_3_11(printk("%s(%ld): failed to issue VP control IOCB"
                    "(%x).\n", __func__, base_vha->host_no, rval));
                printk("%s(%ld): failed to issue VP control IOCB"
                    "(%x).\n", __func__, base_vha->host_no, rval);
        } else if (vce->entry_status != 0) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- error status (%x).\n", __func__, base_vha->host_no,
                    vce->entry_status));
                printk("%s(%ld): failed to complete IOCB "
                    "-- error status (%x).\n", __func__, base_vha->host_no,
                    vce->entry_status);
                rval = QLA_FUNCTION_FAILED;
        } else if (vce->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
                DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
                    "-- completion status (%x).\n", __func__, base_vha->host_no,
                    le16_to_cpu(vce->comp_status)));
                printk("%s(%ld): failed to complete IOCB "
                    "-- completion status (%x).\n", __func__, base_vha->host_no,
                    le16_to_cpu(vce->comp_status));
                rval = QLA_FUNCTION_FAILED;
        } else {
                DEBUG2(printk("%s(%ld): done.\n", __func__, base_vha->host_no));
        }

        dma_pool_free(ha->s_dma_pool, vce, vce_dma);

        return rval;
}

/*
 * qla2x00_send_change_request
 *      Receive or disable RSCN request from fabric controller
 *
 * Input:
 *      ha = adapter block pointer
 *      format = registration format:
 *              0 - Reserved
 *              1 - Fabric detected registration
 *              2 - N_port detected registration
 *              3 - Full registration
 *              FF - clear registration
 *      vp_idx = Virtual port index
 *
 * Returns:
 *      qla2x00 local function return status code.
 *
 * Context:
 *      Kernel Context
 */

int
qla2x00_send_change_request(scsi_qla_host_t *vha, uint16_t format,
                            uint16_t vp_idx)
{
        int rval;
        mbx_cmd_t mc;
        mbx_cmd_t *mcp = &mc;

        /*
         * This command is implicitly executed by firmware during login for the
         * physical hosts
         */
        if (vp_idx == 0)
                return QLA_FUNCTION_FAILED;

        mcp->mb[0] = MBC_SEND_CHANGE_REQUEST;
        mcp->mb[1] = format;
        mcp->mb[9] = vp_idx;
        mcp->out_mb = MBX_9|MBX_1|MBX_0;
        mcp->in_mb = MBX_0|MBX_1;
        mcp->tov = MBX_TOV_SECONDS;
        mcp->flags = 0;
        rval = qla2x00_mailbox_command(vha, mcp);

        if (rval == QLA_SUCCESS) {
                if (mcp->mb[0] != MBS_COMMAND_COMPLETE) {
                        rval = BIT_1;
                }
        } else
                rval = BIT_1;

        return rval;
}

int