// SPDX-License-Identifier: GPL-2.0-only
/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 */
#include "qla_def.h"
#include "qla_target.h"
#include "qla_gbl.h"

#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/cpu.h>
#include <linux/t10-pi.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_bsg_fc.h>
#include <scsi/scsi_eh.h>
#include <scsi/fc/fc_fs.h>
#include <linux/nvme-fc-driver.h>

static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
static int qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
        sts_entry_t *);
static void qla27xx_process_purex_fpin(struct scsi_qla_host *vha,
        struct purex_item *item);
static struct purex_item *qla24xx_alloc_purex_item(scsi_qla_host_t *vha,
        uint16_t size);
static struct purex_item *qla24xx_copy_std_pkt(struct scsi_qla_host *vha,
        void *pkt);
static struct purex_item *qla27xx_copy_fpin_pkt(struct scsi_qla_host *vha,
        void **pkt, struct rsp_que **rsp);

static void
qla27xx_process_purex_fpin(struct scsi_qla_host *vha, struct purex_item *item)
{
        void *pkt = &item->iocb;
        uint16_t pkt_size = item->size;

        ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x508d,
               "%s: Enter\n", __func__);

        ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x508e,
               "-------- ELS REQ -------\n");
        ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x508f,
                       pkt, pkt_size);

        fc_host_fpin_rcv(vha->host, pkt_size, (char *)pkt);
}

const char *const port_state_str[] = {
        "Unknown",
        "UNCONFIGURED",
        "DEAD",
        "LOST",
        "ONLINE"
};

static void
qla24xx_process_abts(struct scsi_qla_host *vha, struct purex_item *pkt)
{
        struct abts_entry_24xx *abts =
            (struct abts_entry_24xx *)&pkt->iocb;
        struct qla_hw_data *ha = vha->hw;
        struct els_entry_24xx *rsp_els;
        struct abts_entry_24xx *abts_rsp;
        dma_addr_t dma;
        uint32_t fctl;
        int rval;

        ql_dbg(ql_dbg_init, vha, 0x0286, "%s: entered.\n", __func__);

        ql_log(ql_log_warn, vha, 0x0287,
            "Processing ABTS xchg=%#x oxid=%#x rxid=%#x seqid=%#x seqcnt=%#x\n",
            abts->rx_xch_addr_to_abort, abts->ox_id, abts->rx_id,
            abts->seq_id, abts->seq_cnt);
        ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x0287,
            "-------- ABTS RCV -------\n");
        ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x0287,
            (uint8_t *)abts, sizeof(*abts));

        rsp_els = dma_alloc_coherent(&ha->pdev->dev, sizeof(*rsp_els), &dma,
            GFP_KERNEL);
        if (!rsp_els) {
                ql_log(ql_log_warn, vha, 0x0287,
                    "Failed allocate dma buffer ABTS/ELS RSP.\n");
                return;
        }

        /* terminate exchange */
        rsp_els->entry_type = ELS_IOCB_TYPE;
        rsp_els->entry_count = 1;
        rsp_els->nport_handle = cpu_to_le16(~0);
        rsp_els->rx_xchg_address = abts->rx_xch_addr_to_abort;
        rsp_els->control_flags = cpu_to_le16(EPD_RX_XCHG);
        ql_dbg(ql_dbg_init, vha, 0x0283,
            "Sending ELS Response to terminate exchange %#x...\n",
            abts->rx_xch_addr_to_abort);
        ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x0283,
            "-------- ELS RSP -------\n");
        ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x0283,
            (uint8_t *)rsp_els, sizeof(*rsp_els));
        rval = qla2x00_issue_iocb(vha, rsp_els, dma, 0);
        if (rval) {
                ql_log(ql_log_warn, vha, 0x0288,
                    "%s: iocb failed to execute -> %x\n", __func__, rval);
        } else if (rsp_els->comp_status) {
                ql_log(ql_log_warn, vha, 0x0289,
                    "%s: iocb failed to complete -> completion=%#x subcode=(%#x,%#x)\n",
                    __func__, rsp_els->comp_status,
                    rsp_els->error_subcode_1, rsp_els->error_subcode_2);
        } else {
                ql_dbg(ql_dbg_init, vha, 0x028a,
                    "%s: abort exchange done.\n", __func__);
        }

        /* send ABTS response */
        abts_rsp = (void *)rsp_els;
        memset(abts_rsp, 0, sizeof(*abts_rsp));
        abts_rsp->entry_type = ABTS_RSP_TYPE;
        abts_rsp->entry_count = 1;
        abts_rsp->nport_handle = abts->nport_handle;
        abts_rsp->vp_idx = abts->vp_idx;
        abts_rsp->sof_type = abts->sof_type & 0xf0;
        abts_rsp->rx_xch_addr = abts->rx_xch_addr;
        abts_rsp->d_id[0] = abts->s_id[0];
        abts_rsp->d_id[1] = abts->s_id[1];
        abts_rsp->d_id[2] = abts->s_id[2];
        abts_rsp->r_ctl = FC_ROUTING_BLD | FC_R_CTL_BLD_BA_ACC;
        abts_rsp->s_id[0] = abts->d_id[0];
        abts_rsp->s_id[1] = abts->d_id[1];
        abts_rsp->s_id[2] = abts->d_id[2];
        abts_rsp->cs_ctl = abts->cs_ctl;
        /* include flipping bit23 in fctl */
        fctl = ~(abts->f_ctl[2] | 0x7F) << 16 |
            FC_F_CTL_LAST_SEQ | FC_F_CTL_END_SEQ | FC_F_CTL_SEQ_INIT;
        abts_rsp->f_ctl[0] = fctl >> 0 & 0xff;
        abts_rsp->f_ctl[1] = fctl >> 8 & 0xff;
        abts_rsp->f_ctl[2] = fctl >> 16 & 0xff;
        abts_rsp->type = FC_TYPE_BLD;
        abts_rsp->rx_id = abts->rx_id;
        abts_rsp->ox_id = abts->ox_id;
        abts_rsp->payload.ba_acc.aborted_rx_id = abts->rx_id;
        abts_rsp->payload.ba_acc.aborted_ox_id = abts->ox_id;
        abts_rsp->payload.ba_acc.high_seq_cnt = cpu_to_le16(~0);
        abts_rsp->rx_xch_addr_to_abort = abts->rx_xch_addr_to_abort;
        ql_dbg(ql_dbg_init, vha, 0x028b,
            "Sending BA ACC response to ABTS %#x...\n",
            abts->rx_xch_addr_to_abort);
        ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x028b,
            "-------- ELS RSP -------\n");
        ql_dump_buffer(ql_dbg_init + ql_dbg_verbose, vha, 0x028b,
            (uint8_t *)abts_rsp, sizeof(*abts_rsp));
        rval = qla2x00_issue_iocb(vha, abts_rsp, dma, 0);
        if (rval) {
                ql_log(ql_log_warn, vha, 0x028c,
                    "%s: iocb failed to execute -> %x\n", __func__, rval);
        } else if (abts_rsp->comp_status) {
                ql_log(ql_log_warn, vha, 0x028d,
                    "%s: iocb failed to complete -> completion=%#x subcode=(%#x,%#x)\n",
                    __func__, abts_rsp->comp_status,
                    abts_rsp->payload.error.subcode1,
                    abts_rsp->payload.error.subcode2);
        } else {
                ql_dbg(ql_dbg_init, vha, 0x028ea,
                    "%s: done.\n", __func__);
        }

        dma_free_coherent(&ha->pdev->dev, sizeof(*rsp_els), rsp_els, dma);
}

/**
 * __qla_consume_iocb - this routine is used to tell fw driver has processed
 *   or consumed the head IOCB along with the continuation IOCB's from the
 *   provided respond queue.
 * @vha: host adapter pointer
 * @pkt: pointer to current packet.  On return, this pointer shall move
 *       to the next packet.
 * @rsp: respond queue pointer.
 *
 * it is assumed pkt is the head iocb, not the continuation iocbk
 */
void __qla_consume_iocb(struct scsi_qla_host *vha,
        void **pkt, struct rsp_que **rsp)
{
        struct rsp_que *rsp_q = *rsp;
        response_t *new_pkt;
        uint16_t entry_count_remaining;
        struct purex_entry_24xx *purex = *pkt;

        entry_count_remaining = purex->entry_count;
        while (entry_count_remaining > 0) {
                new_pkt = rsp_q->ring_ptr;
                *pkt = new_pkt;

                rsp_q->ring_index++;
                if (rsp_q->ring_index == rsp_q->length) {
                        rsp_q->ring_index = 0;
                        rsp_q->ring_ptr = rsp_q->ring;
                } else {
                        rsp_q->ring_ptr++;
                }

                new_pkt->signature = RESPONSE_PROCESSED;
                /* flush signature */
                wmb();
                --entry_count_remaining;
        }
}

/**
 * __qla_copy_purex_to_buffer - extract ELS payload from Purex IOCB
 *    and save to provided buffer
 * @vha: host adapter pointer
 * @pkt: pointer Purex IOCB
 * @rsp: respond queue
 * @buf: extracted ELS payload copy here
 * @buf_len: buffer length
 */
int __qla_copy_purex_to_buffer(struct scsi_qla_host *vha,
        void **pkt, struct rsp_que **rsp, u8 *buf, u32 buf_len)
{
        struct purex_entry_24xx *purex = *pkt;
        struct rsp_que *rsp_q = *rsp;
        sts_cont_entry_t *new_pkt;
        uint16_t no_bytes = 0, total_bytes = 0, pending_bytes = 0;
        uint16_t buffer_copy_offset = 0;
        uint16_t entry_count_remaining;
        u16 tpad;

        entry_count_remaining = purex->entry_count;
        total_bytes = (le16_to_cpu(purex->frame_size) & 0x0FFF)
                - PURX_ELS_HEADER_SIZE;

        /*
         * end of payload may not end in 4bytes boundary.  Need to
         * round up / pad for room to swap, before saving data
         */
        tpad = roundup(total_bytes, 4);

        if (buf_len < tpad) {
                ql_dbg(ql_dbg_async, vha, 0x5084,
                    "%s buffer is too small %d < %d\n",
                    __func__, buf_len, tpad);
                __qla_consume_iocb(vha, pkt, rsp);
                return -EIO;
        }

        pending_bytes = total_bytes = tpad;
        no_bytes = (pending_bytes > sizeof(purex->els_frame_payload))  ?
            sizeof(purex->els_frame_payload) : pending_bytes;

        memcpy(buf, &purex->els_frame_payload[0], no_bytes);
        buffer_copy_offset += no_bytes;
        pending_bytes -= no_bytes;
        --entry_count_remaining;

        ((response_t *)purex)->signature = RESPONSE_PROCESSED;
        /* flush signature */
        wmb();

        do {
                while ((total_bytes > 0) && (entry_count_remaining > 0)) {
                        new_pkt = (sts_cont_entry_t *)rsp_q->ring_ptr;
                        *pkt = new_pkt;

                        if (new_pkt->entry_type != STATUS_CONT_TYPE) {
                                ql_log(ql_log_warn, vha, 0x507a,
                                    "Unexpected IOCB type, partial data 0x%x\n",
                                    buffer_copy_offset);
                                break;
                        }

                        rsp_q->ring_index++;
                        if (rsp_q->ring_index == rsp_q->length) {
                                rsp_q->ring_index = 0;
                                rsp_q->ring_ptr = rsp_q->ring;
                        } else {
                                rsp_q->ring_ptr++;
                        }
                        no_bytes = (pending_bytes > sizeof(new_pkt->data)) ?
                            sizeof(new_pkt->data) : pending_bytes;
                        if ((buffer_copy_offset + no_bytes) <= total_bytes) {
                                memcpy((buf + buffer_copy_offset), new_pkt->data,
                                    no_bytes);
                                buffer_copy_offset += no_bytes;
                                pending_bytes -= no_bytes;
                                --entry_count_remaining;
                        } else {
                                ql_log(ql_log_warn, vha, 0x5044,
                                    "Attempt to copy more that we got, optimizing..%x\n",
                                    buffer_copy_offset);
                                memcpy((buf + buffer_copy_offset), new_pkt->data,
                                    total_bytes - buffer_copy_offset);
                        }

                        ((response_t *)new_pkt)->signature = RESPONSE_PROCESSED;
                        /* flush signature */
                        wmb();
                }

                if (pending_bytes != 0 || entry_count_remaining != 0) {
                        ql_log(ql_log_fatal, vha, 0x508b,
                            "Dropping partial Data, underrun bytes = 0x%x, entry cnts 0x%x\n",
                            total_bytes, entry_count_remaining);
                        return -EIO;
                }
        } while (entry_count_remaining > 0);

        be32_to_cpu_array((u32 *)buf, (__be32 *)buf, total_bytes >> 2);

        return 0;
}

/**
 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
 * @irq: interrupt number
 * @dev_id: SCSI driver HA context
 *
 * Called by system whenever the host adapter generates an interrupt.
 *
 * Returns handled flag.
 */
irqreturn_t
qla2100_intr_handler(int irq, void *dev_id)
{
        scsi_qla_host_t *vha;
        struct qla_hw_data *ha;
        struct device_reg_2xxx __iomem *reg;
        int             status;
        unsigned long   iter;
        uint16_t        hccr;
        uint16_t        mb[8];
        struct rsp_que *rsp;
        unsigned long   flags;

        rsp = (struct rsp_que *) dev_id;
        if (!rsp) {
                ql_log(ql_log_info, NULL, 0x505d,
                    "%s: NULL response queue pointer.\n", __func__);
                return (IRQ_NONE);
        }

        ha = rsp->hw;
        reg = &ha->iobase->isp;
        status = 0;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        vha = pci_get_drvdata(ha->pdev);
        for (iter = 50; iter--; ) {
                hccr = rd_reg_word(&reg->hccr);
                if (qla2x00_check_reg16_for_disconnect(vha, hccr))
                        break;
                if (hccr & HCCR_RISC_PAUSE) {
                        if (pci_channel_offline(ha->pdev))
                                break;

                        /*
                         * Issue a "HARD" reset in order for the RISC interrupt
                         * bit to be cleared.  Schedule a big hammer to get
                         * out of the RISC PAUSED state.
                         */
                        wrt_reg_word(&reg->hccr, HCCR_RESET_RISC);
                        rd_reg_word(&reg->hccr);

                        ha->isp_ops->fw_dump(vha);
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                        break;
                } else if ((rd_reg_word(&reg->istatus) & ISR_RISC_INT) == 0)
                        break;

                if (rd_reg_word(&reg->semaphore) & BIT_0) {
                        wrt_reg_word(&reg->hccr, HCCR_CLR_RISC_INT);
                        rd_reg_word(&reg->hccr);

                        /* Get mailbox data. */
                        mb[0] = RD_MAILBOX_REG(ha, reg, 0);
                        if (mb[0] > 0x3fff && mb[0] < 0x8000) {
                                qla2x00_mbx_completion(vha, mb[0]);
                                status |= MBX_INTERRUPT;
                        } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
                                mb[1] = RD_MAILBOX_REG(ha, reg, 1);
                                mb[2] = RD_MAILBOX_REG(ha, reg, 2);
                                mb[3] = RD_MAILBOX_REG(ha, reg, 3);
                                qla2x00_async_event(vha, rsp, mb);
                        } else {
                                /*EMPTY*/
                                ql_dbg(ql_dbg_async, vha, 0x5025,
                                    "Unrecognized interrupt type (%d).\n",
                                    mb[0]);
                        }
                        /* Release mailbox registers. */
                        wrt_reg_word(&reg->semaphore, 0);
                        rd_reg_word(&reg->semaphore);
                } else {
                        qla2x00_process_response_queue(rsp);

                        wrt_reg_word(&reg->hccr, HCCR_CLR_RISC_INT);
                        rd_reg_word(&reg->hccr);
                }
        }
        qla2x00_handle_mbx_completion(ha, status);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return (IRQ_HANDLED);
}

bool
qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
{
        /* Check for PCI disconnection */
        if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
                if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
                    !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
                    !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
                        qla_schedule_eeh_work(vha);
                }
                return true;
        } else
                return false;
}

bool
qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
{
        return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
}

/**
 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 * @irq: interrupt number
 * @dev_id: SCSI driver HA context
 *
 * Called by system whenever the host adapter generates an interrupt.
 *
 * Returns handled flag.
 */
irqreturn_t
qla2300_intr_handler(int irq, void *dev_id)
{
        scsi_qla_host_t *vha;
        struct device_reg_2xxx __iomem *reg;
        int             status;
        unsigned long   iter;
        uint32_t        stat;
        uint16_t        hccr;
        uint16_t        mb[8];
        struct rsp_que *rsp;
        struct qla_hw_data *ha;
        unsigned long   flags;

        rsp = (struct rsp_que *) dev_id;
        if (!rsp) {
                ql_log(ql_log_info, NULL, 0x5058,
                    "%s: NULL response queue pointer.\n", __func__);
                return (IRQ_NONE);
        }

        ha = rsp->hw;
        reg = &ha->iobase->isp;
        status = 0;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        vha = pci_get_drvdata(ha->pdev);
        for (iter = 50; iter--; ) {
                stat = rd_reg_dword(&reg->u.isp2300.host_status);
                if (qla2x00_check_reg32_for_disconnect(vha, stat))
                        break;
                if (stat & HSR_RISC_PAUSED) {
                        if (unlikely(pci_channel_offline(ha->pdev)))
                                break;

                        hccr = rd_reg_word(&reg->hccr);

                        if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
                                ql_log(ql_log_warn, vha, 0x5026,
                                    "Parity error -- HCCR=%x, Dumping "
                                    "firmware.\n", hccr);
                        else
                                ql_log(ql_log_warn, vha, 0x5027,
                                    "RISC paused -- HCCR=%x, Dumping "
                                    "firmware.\n", hccr);

                        /*
                         * Issue a "HARD" reset in order for the RISC
                         * interrupt bit to be cleared.  Schedule a big
                         * hammer to get out of the RISC PAUSED state.
                         */
                        wrt_reg_word(&reg->hccr, HCCR_RESET_RISC);
                        rd_reg_word(&reg->hccr);

                        ha->isp_ops->fw_dump(vha);
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                        break;
                } else if ((stat & HSR_RISC_INT) == 0)
                        break;

                switch (stat & 0xff) {
                case 0x1:
                case 0x2:
                case 0x10:
                case 0x11:
                        qla2x00_mbx_completion(vha, MSW(stat));
                        status |= MBX_INTERRUPT;

                        /* Release mailbox registers. */
                        wrt_reg_word(&reg->semaphore, 0);
                        break;
                case 0x12:
                        mb[0] = MSW(stat);
                        mb[1] = RD_MAILBOX_REG(ha, reg, 1);
                        mb[2] = RD_MAILBOX_REG(ha, reg, 2);
                        mb[3] = RD_MAILBOX_REG(ha, reg, 3);
                        qla2x00_async_event(vha, rsp, mb);
                        break;
                case 0x13:
                        qla2x00_process_response_queue(rsp);
                        break;
                case 0x15:
                        mb[0] = MBA_CMPLT_1_16BIT;
                        mb[1] = MSW(stat);
                        qla2x00_async_event(vha, rsp, mb);
                        break;
                case 0x16:
                        mb[0] = MBA_SCSI_COMPLETION;
                        mb[1] = MSW(stat);
                        mb[2] = RD_MAILBOX_REG(ha, reg, 2);
                        qla2x00_async_event(vha, rsp, mb);
                        break;
                default:
                        ql_dbg(ql_dbg_async, vha, 0x5028,
                            "Unrecognized interrupt type (%d).\n", stat & 0xff);
                        break;
                }
                wrt_reg_word(&reg->hccr, HCCR_CLR_RISC_INT);
                rd_reg_word_relaxed(&reg->hccr);
        }
        qla2x00_handle_mbx_completion(ha, status);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return (IRQ_HANDLED);
}

/**
 * qla2x00_mbx_completion() - Process mailbox command completions.
 * @vha: SCSI driver HA context
 * @mb0: Mailbox0 register
 */
static void
qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
{
        uint16_t        cnt;
        uint32_t        mboxes;
        __le16 __iomem *wptr;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        /* Read all mbox registers? */
        WARN_ON_ONCE(ha->mbx_count > 32);
        mboxes = (1ULL << ha->mbx_count) - 1;
        if (!ha->mcp)
                ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
        else
                mboxes = ha->mcp->in_mb;

        /* Load return mailbox registers. */
        ha->flags.mbox_int = 1;
        ha->mailbox_out[0] = mb0;
        mboxes >>= 1;
        wptr = MAILBOX_REG(ha, reg, 1);

        for (cnt = 1; cnt < ha->mbx_count; cnt++) {
                if (IS_QLA2200(ha) && cnt == 8)
                        wptr = MAILBOX_REG(ha, reg, 8);
                if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
                        ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
                else if (mboxes & BIT_0)
                        ha->mailbox_out[cnt] = rd_reg_word(wptr);

                wptr++;
                mboxes >>= 1;
        }
}

static void
qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
{
        static char *event[] =
                { "Complete", "Request Notification", "Time Extension" };
        int rval;
        struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
        struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
        __le16 __iomem *wptr;
        uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];

        /* Seed data -- mailbox1 -> mailbox7. */
        if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
                wptr = &reg24->mailbox1;
        else if (IS_QLA8044(vha->hw))
                wptr = &reg82->mailbox_out[1];
        else
                return;

        for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
                mb[cnt] = rd_reg_word(wptr);

        ql_dbg(ql_dbg_async, vha, 0x5021,
            "Inter-Driver Communication %s -- "
            "%04x %04x %04x %04x %04x %04x %04x.\n",
            event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
            mb[4], mb[5], mb[6]);
        switch (aen) {
        /* Handle IDC Error completion case. */
        case MBA_IDC_COMPLETE:
                if (mb[1] >> 15) {
                        vha->hw->flags.idc_compl_status = 1;
                        if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
                                complete(&vha->hw->dcbx_comp);
                }
                break;

        case MBA_IDC_NOTIFY:
                /* Acknowledgement needed? [Notify && non-zero timeout]. */
                timeout = (descr >> 8) & 0xf;
                ql_dbg(ql_dbg_async, vha, 0x5022,
                    "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
                    vha->host_no, event[aen & 0xff], timeout);

                if (!timeout)
                        return;
                rval = qla2x00_post_idc_ack_work(vha, mb);
                if (rval != QLA_SUCCESS)
                        ql_log(ql_log_warn, vha, 0x5023,
                            "IDC failed to post ACK.\n");
                break;
        case MBA_IDC_TIME_EXT:
                vha->hw->idc_extend_tmo = descr;
                ql_dbg(ql_dbg_async, vha, 0x5087,
                    "%lu Inter-Driver Communication %s -- "
                    "Extend timeout by=%d.\n",
                    vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
                break;
        }
}

#define LS_UNKNOWN      2
const char *
qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
{
        static const char *const link_speeds[] = {
                "1", "2", "?", "4", "8", "16", "32", "64", "10"
        };
#define QLA_LAST_SPEED (ARRAY_SIZE(link_speeds) - 1)

        if (IS_QLA2100(ha) || IS_QLA2200(ha))
                return link_speeds[0];
        else if (speed == 0x13)
                return link_speeds[QLA_LAST_SPEED];
        else if (speed < QLA_LAST_SPEED)
                return link_speeds[speed];
        else
                return link_speeds[LS_UNKNOWN];
}

static void
qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
{
        struct qla_hw_data *ha = vha->hw;

        /*
         * 8200 AEN Interpretation:
         * mb[0] = AEN code
         * mb[1] = AEN Reason code
         * mb[2] = LSW of Peg-Halt Status-1 Register
         * mb[6] = MSW of Peg-Halt Status-1 Register
         * mb[3] = LSW of Peg-Halt Status-2 register
         * mb[7] = MSW of Peg-Halt Status-2 register
         * mb[4] = IDC Device-State Register value
         * mb[5] = IDC Driver-Presence Register value
         */
        ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
            "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
            mb[0], mb[1], mb[2], mb[6]);
        ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
            "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
            "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);

        if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
                                IDC_HEARTBEAT_FAILURE)) {
                ha->flags.nic_core_hung = 1;
                ql_log(ql_log_warn, vha, 0x5060,
                    "83XX: F/W Error Reported: Check if reset required.\n");

                if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
                        uint32_t protocol_engine_id, fw_err_code, err_level;

                        /*
                         * IDC_PEG_HALT_STATUS_CHANGE interpretation:
                         *  - PEG-Halt Status-1 Register:
                         *      (LSW = mb[2], MSW = mb[6])
                         *      Bits 0-7   = protocol-engine ID
                         *      Bits 8-28  = f/w error code
                         *      Bits 29-31 = Error-level
                         *          Error-level 0x1 = Non-Fatal error
                         *          Error-level 0x2 = Recoverable Fatal error
                         *          Error-level 0x4 = UnRecoverable Fatal error
                         *  - PEG-Halt Status-2 Register:
                         *      (LSW = mb[3], MSW = mb[7])
                         */
                        protocol_engine_id = (mb[2] & 0xff);
                        fw_err_code = (((mb[2] & 0xff00) >> 8) |
                            ((mb[6] & 0x1fff) << 8));
                        err_level = ((mb[6] & 0xe000) >> 13);
                        ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
                            "Register: protocol_engine_id=0x%x "
                            "fw_err_code=0x%x err_level=0x%x.\n",
                            protocol_engine_id, fw_err_code, err_level);
                        ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
                            "Register: 0x%x%x.\n", mb[7], mb[3]);
                        if (err_level == ERR_LEVEL_NON_FATAL) {
                                ql_log(ql_log_warn, vha, 0x5063,
                                    "Not a fatal error, f/w has recovered itself.\n");
                        } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
                                ql_log(ql_log_fatal, vha, 0x5064,
                                    "Recoverable Fatal error: Chip reset "
                                    "required.\n");
                                qla83xx_schedule_work(vha,
                                    QLA83XX_NIC_CORE_RESET);
                        } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
                                ql_log(ql_log_fatal, vha, 0x5065,
                                    "Unrecoverable Fatal error: Set FAILED "
                                    "state, reboot required.\n");
                                qla83xx_schedule_work(vha,
                                    QLA83XX_NIC_CORE_UNRECOVERABLE);
                        }
                }

                if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
                        uint16_t peg_fw_state, nw_interface_link_up;
                        uint16_t nw_interface_signal_detect, sfp_status;
                        uint16_t htbt_counter, htbt_monitor_enable;
                        uint16_t sfp_additional_info, sfp_multirate;
                        uint16_t sfp_tx_fault, link_speed, dcbx_status;

                        /*
                         * IDC_NIC_FW_REPORTED_FAILURE interpretation:
                         *  - PEG-to-FC Status Register:
                         *      (LSW = mb[2], MSW = mb[6])
                         *      Bits 0-7   = Peg-Firmware state
                         *      Bit 8      = N/W Interface Link-up
                         *      Bit 9      = N/W Interface signal detected
                         *      Bits 10-11 = SFP Status
                         *        SFP Status 0x0 = SFP+ transceiver not expected
                         *        SFP Status 0x1 = SFP+ transceiver not present
                         *        SFP Status 0x2 = SFP+ transceiver invalid
                         *        SFP Status 0x3 = SFP+ transceiver present and
                         *        valid
                         *      Bits 12-14 = Heartbeat Counter
                         *      Bit 15     = Heartbeat Monitor Enable
                         *      Bits 16-17 = SFP Additional Info
                         *        SFP info 0x0 = Unregocnized transceiver for
                         *        Ethernet
                         *        SFP info 0x1 = SFP+ brand validation failed
                         *        SFP info 0x2 = SFP+ speed validation failed
                         *        SFP info 0x3 = SFP+ access error
                         *      Bit 18     = SFP Multirate
                         *      Bit 19     = SFP Tx Fault
                         *      Bits 20-22 = Link Speed
                         *      Bits 23-27 = Reserved
                         *      Bits 28-30 = DCBX Status
                         *        DCBX Status 0x0 = DCBX Disabled
                         *        DCBX Status 0x1 = DCBX Enabled
                         *        DCBX Status 0x2 = DCBX Exchange error
                         *      Bit 31     = Reserved
                         */
                        peg_fw_state = (mb[2] & 0x00ff);
                        nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
                        nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
                        sfp_status = ((mb[2] & 0x0c00) >> 10);
                        htbt_counter = ((mb[2] & 0x7000) >> 12);
                        htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
                        sfp_additional_info = (mb[6] & 0x0003);
                        sfp_multirate = ((mb[6] & 0x0004) >> 2);
                        sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
                        link_speed = ((mb[6] & 0x0070) >> 4);
                        dcbx_status = ((mb[6] & 0x7000) >> 12);

                        ql_log(ql_log_warn, vha, 0x5066,
                            "Peg-to-Fc Status Register:\n"
                            "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
                            "nw_interface_signal_detect=0x%x"
                            "\nsfp_statis=0x%x.\n ", peg_fw_state,
                            nw_interface_link_up, nw_interface_signal_detect,
                            sfp_status);
                        ql_log(ql_log_warn, vha, 0x5067,
                            "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
                            "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
                            htbt_counter, htbt_monitor_enable,
                            sfp_additional_info, sfp_multirate);
                        ql_log(ql_log_warn, vha, 0x5068,
                            "sfp_tx_fault=0x%x, link_state=0x%x, "
                            "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
                            dcbx_status);

                        qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
                }

                if (mb[1] & IDC_HEARTBEAT_FAILURE) {
                        ql_log(ql_log_warn, vha, 0x5069,
                            "Heartbeat Failure encountered, chip reset "
                            "required.\n");

                        qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
                }
        }

        if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
                ql_log(ql_log_info, vha, 0x506a,
                    "IDC Device-State changed = 0x%x.\n", mb[4]);
                if (ha->flags.nic_core_reset_owner)
                        return;
                qla83xx_schedule_work(vha, MBA_IDC_AEN);
        }
}

int
qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
{
        struct qla_hw_data *ha = vha->hw;
        scsi_qla_host_t *vp;
        uint32_t vp_did;
        unsigned long flags;
        int ret = 0;

        if (!ha->num_vhosts)
                return ret;

        spin_lock_irqsave(&ha->vport_slock, flags);
        list_for_each_entry(vp, &ha->vp_list, list) {
                vp_did = vp->d_id.b24;
                if (vp_did == rscn_entry) {
                        ret = 1;
                        break;
                }
        }
        spin_unlock_irqrestore(&ha->vport_slock, flags);

        return ret;
}

fc_port_t *
qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
{
        fc_port_t *f, *tf;

        f = tf = NULL;
        list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
                if (f->loop_id == loop_id)
                        return f;
        return NULL;
}

fc_port_t *
qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
{
        fc_port_t *f, *tf;

        f = tf = NULL;
        list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
                if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
                        if (incl_deleted)
                                return f;
                        else if (f->deleted == 0)
                                return f;
                }
        }
        return NULL;
}

fc_port_t *
qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
        u8 incl_deleted)
{
        fc_port_t *f, *tf;

        f = tf = NULL;
        list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
                if (f->d_id.b24 == id->b24) {
                        if (incl_deleted)
                                return f;
                        else if (f->deleted == 0)
                                return f;
                }
        }
        return NULL;
}

/* Shall be called only on supported adapters. */
static void
qla27xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
{
        struct qla_hw_data *ha = vha->hw;
        bool reset_isp_needed = false;

        ql_log(ql_log_warn, vha, 0x02f0,
               "MPI Heartbeat stop. MPI reset is%s needed. "
               "MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
               mb[1] & BIT_8 ? "" : " not",
               mb[0], mb[1], mb[2], mb[3]);

        if ((mb[1] & BIT_8) == 0)
                return;

        ql_log(ql_log_warn, vha, 0x02f1,
               "MPI Heartbeat stop. FW dump needed\n");

        if (ql2xfulldump_on_mpifail) {
                ha->isp_ops->fw_dump(vha);
                reset_isp_needed = true;
        }

        ha->isp_ops->mpi_fw_dump(vha, 1);

        if (reset_isp_needed) {
                vha->hw->flags.fw_init_done = 0;
                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                qla2xxx_wake_dpc(vha);
        }
}

static struct purex_item *
qla24xx_alloc_purex_item(scsi_qla_host_t *vha, uint16_t size)
{
        struct purex_item *item = NULL;
        uint8_t item_hdr_size = sizeof(*item);

        if (size > QLA_DEFAULT_PAYLOAD_SIZE) {
                item = kzalloc(item_hdr_size +
                    (size - QLA_DEFAULT_PAYLOAD_SIZE), GFP_ATOMIC);
        } else {
                if (atomic_inc_return(&vha->default_item.in_use) == 1) {
                        item = &vha->default_item;
                        goto initialize_purex_header;
                } else {
                        item = kzalloc(item_hdr_size, GFP_ATOMIC);
                }
        }
        if (!item) {
                ql_log(ql_log_warn, vha, 0x5092,
                       ">> Failed allocate purex list item.\n");

                return NULL;
        }

initialize_purex_header:
        item->vha = vha;
        item->size = size;
        return item;
}

static void
qla24xx_queue_purex_item(scsi_qla_host_t *vha, struct purex_item *pkt,
                         void (*process_item)(struct scsi_qla_host *vha,
                                              struct purex_item *pkt))
{
        struct purex_list *list = &vha->purex_list;
        ulong flags;

        pkt->process_item = process_item;

        spin_lock_irqsave(&list->lock, flags);
        list_add_tail(&pkt->list, &list->head);
        spin_unlock_irqrestore(&list->lock, flags);

        set_bit(PROCESS_PUREX_IOCB, &vha->dpc_flags);
}

/**
 * qla24xx_copy_std_pkt() - Copy over purex ELS which is
 * contained in a single IOCB.
 * purex packet.
 * @vha: SCSI driver HA context
 * @pkt: ELS packet
 */
static struct purex_item
*qla24xx_copy_std_pkt(struct scsi_qla_host *vha, void *pkt)
{
        struct purex_item *item;

        item = qla24xx_alloc_purex_item(vha,
                                        QLA_DEFAULT_PAYLOAD_SIZE);
        if (!item)
                return item;

        memcpy(&item->iocb, pkt, sizeof(item->iocb));
        return item;
}

/**
 * qla27xx_copy_fpin_pkt() - Copy over fpin packets that can

 * span over multiple IOCBs.
 * @vha: SCSI driver HA context
 * @pkt: ELS packet
 * @rsp: Response queue
 */
static struct purex_item *
qla27xx_copy_fpin_pkt(struct scsi_qla_host *vha, void **pkt,
                      struct rsp_que **rsp)
{
        struct purex_entry_24xx *purex = *pkt;
        struct rsp_que *rsp_q = *rsp;
        sts_cont_entry_t *new_pkt;
        uint16_t no_bytes = 0, total_bytes = 0, pending_bytes = 0;
        uint16_t buffer_copy_offset = 0;
        uint16_t entry_count, entry_count_remaining;
        struct purex_item *item;
        void *fpin_pkt = NULL;

        total_bytes = (le16_to_cpu(purex->frame_size) & 0x0FFF)
            - PURX_ELS_HEADER_SIZE;
        pending_bytes = total_bytes;
        entry_count = entry_count_remaining = purex->entry_count;
        no_bytes = (pending_bytes > sizeof(purex->els_frame_payload))  ?
                   sizeof(purex->els_frame_payload) : pending_bytes;
        ql_log(ql_log_info, vha, 0x509a,
               "FPIN ELS, frame_size 0x%x, entry count %d\n",
               total_bytes, entry_count);

        item = qla24xx_alloc_purex_item(vha, total_bytes);
        if (!item)
                return item;

        fpin_pkt = &item->iocb;

        memcpy(fpin_pkt, &purex->els_frame_payload[0], no_bytes);
        buffer_copy_offset += no_bytes;
        pending_bytes -= no_bytes;
        --entry_count_remaining;

        ((response_t *)purex)->signature = RESPONSE_PROCESSED;
        wmb();

        do {
                while ((total_bytes > 0) && (entry_count_remaining > 0)) {
                        if (rsp_q->ring_ptr->signature == RESPONSE_PROCESSED) {
                                ql_dbg(ql_dbg_async, vha, 0x5084,
                                       "Ran out of IOCBs, partial data 0x%x\n",
                                       buffer_copy_offset);
                                cpu_relax();
                                continue;
                        }

                        new_pkt = (sts_cont_entry_t *)rsp_q->ring_ptr;
                        *pkt = new_pkt;

                        if (new_pkt->entry_type != STATUS_CONT_TYPE) {
                                ql_log(ql_log_warn, vha, 0x507a,
                                       "Unexpected IOCB type, partial data 0x%x\n",
                                       buffer_copy_offset);
                                break;
                        }

                        rsp_q->ring_index++;
                        if (rsp_q->ring_index == rsp_q->length) {
                                rsp_q->ring_index = 0;
                                rsp_q->ring_ptr = rsp_q->ring;
                        } else {
                                rsp_q->ring_ptr++;
                        }
                        no_bytes = (pending_bytes > sizeof(new_pkt->data)) ?
                            sizeof(new_pkt->data) : pending_bytes;
                        if ((buffer_copy_offset + no_bytes) <= total_bytes) {
                                memcpy(((uint8_t *)fpin_pkt +
                                    buffer_copy_offset), new_pkt->data,
                                    no_bytes);
                                buffer_copy_offset += no_bytes;
                                pending_bytes -= no_bytes;
                                --entry_count_remaining;
                        } else {
                                ql_log(ql_log_warn, vha, 0x5044,
                                       "Attempt to copy more that we got, optimizing..%x\n",
                                       buffer_copy_offset);
                                memcpy(((uint8_t *)fpin_pkt +
                                    buffer_copy_offset), new_pkt->data,
                                    total_bytes - buffer_copy_offset);
                        }

                        ((response_t *)new_pkt)->signature = RESPONSE_PROCESSED;
                        wmb();
                }

                if (pending_bytes != 0 || entry_count_remaining != 0) {
                        ql_log(ql_log_fatal, vha, 0x508b,
                               "Dropping partial FPIN, underrun bytes = 0x%x, entry cnts 0x%x\n",
                               total_bytes, entry_count_remaining);
                        qla24xx_free_purex_item(item);
                        return NULL;
                }
        } while (entry_count_remaining > 0);
        host_to_fcp_swap((uint8_t *)&item->iocb, total_bytes);
        return item;
}

/**
 * qla2x00_async_event() - Process aynchronous events.
 * @vha: SCSI driver HA context
 * @rsp: response queue
 * @mb: Mailbox registers (0 - 3)
 */
void
qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
{
        uint16_t        handle_cnt;
        uint16_t        cnt, mbx;
        uint32_t        handles[5];
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
        struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
        uint32_t        rscn_entry, host_pid;
        unsigned long   flags;
        fc_port_t       *fcport = NULL;

        if (!vha->hw->flags.fw_started)
                return;

        /* Setup to process RIO completion. */
        handle_cnt = 0;
        if (IS_CNA_CAPABLE(ha))
                goto skip_rio;
        switch (mb[0]) {
        case MBA_SCSI_COMPLETION:
                handles[0] = make_handle(mb[2], mb[1]);
                handle_cnt = 1;
                break;
        case MBA_CMPLT_1_16BIT:
                handles[0] = mb[1];
                handle_cnt = 1;
                mb[0] = MBA_SCSI_COMPLETION;
                break;
        case MBA_CMPLT_2_16BIT:
                handles[0] = mb[1];
                handles[1] = mb[2];
                handle_cnt = 2;
                mb[0] = MBA_SCSI_COMPLETION;
                break;
        case MBA_CMPLT_3_16BIT:
                handles[0] = mb[1];
                handles[1] = mb[2];
                handles[2] = mb[3];
                handle_cnt = 3;
                mb[0] = MBA_SCSI_COMPLETION;
                break;
        case MBA_CMPLT_4_16BIT:
                handles[0] = mb[1];
                handles[1] = mb[2];
                handles[2] = mb[3];
                handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
                handle_cnt = 4;
                mb[0] = MBA_SCSI_COMPLETION;
                break;
        case MBA_CMPLT_5_16BIT:
                handles[0] = mb[1];
                handles[1] = mb[2];
                handles[2] = mb[3];
                handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
                handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
                handle_cnt = 5;
                mb[0] = MBA_SCSI_COMPLETION;
                break;
        case MBA_CMPLT_2_32BIT:
                handles[0] = make_handle(mb[2], mb[1]);
                handles[1] = make_handle(RD_MAILBOX_REG(ha, reg, 7),
                                         RD_MAILBOX_REG(ha, reg, 6));
                handle_cnt = 2;
                mb[0] = MBA_SCSI_COMPLETION;
                break;
        default:
                break;
        }
skip_rio:
        switch (mb[0]) {
        case MBA_SCSI_COMPLETION:       /* Fast Post */
                if (!vha->flags.online)
                        break;

                for (cnt = 0; cnt < handle_cnt; cnt++)
                        qla2x00_process_completed_request(vha, rsp->req,
                                handles[cnt]);
                break;

        case MBA_RESET:                 /* Reset */
                ql_dbg(ql_dbg_async, vha, 0x5002,
                    "Asynchronous RESET.\n");

                set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
                break;

        case MBA_SYSTEM_ERR:            /* System Error */
                mbx = 0;

                vha->hw_err_cnt++;

                if (IS_QLA81XX(ha) || IS_QLA83XX(ha) ||
                    IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
                        u16 m[4];

                        m[0] = rd_reg_word(&reg24->mailbox4);
                        m[1] = rd_reg_word(&reg24->mailbox5);
                        m[2] = rd_reg_word(&reg24->mailbox6);
                        mbx = m[3] = rd_reg_word(&reg24->mailbox7);

                        ql_log(ql_log_warn, vha, 0x5003,
                            "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh mbx4=%xh mbx5=%xh mbx6=%xh mbx7=%xh.\n",
                            mb[1], mb[2], mb[3], m[0], m[1], m[2], m[3]);
                } else
                        ql_log(ql_log_warn, vha, 0x5003,
                            "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n ",
                            mb[1], mb[2], mb[3]);

                if ((IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
                    rd_reg_word(&reg24->mailbox7) & BIT_8)
                        ha->isp_ops->mpi_fw_dump(vha, 1);
                ha->isp_ops->fw_dump(vha);
                ha->flags.fw_init_done = 0;
                QLA_FW_STOPPED(ha);

                if (IS_FWI2_CAPABLE(ha)) {
                        if (mb[1] == 0 && mb[2] == 0) {
                                ql_log(ql_log_fatal, vha, 0x5004,
                                    "Unrecoverable Hardware Error: adapter "
                                    "marked OFFLINE!\n");
                                vha->flags.online = 0;
                                vha->device_flags |= DFLG_DEV_FAILED;
                        } else {
                                /* Check to see if MPI timeout occurred */
                                if ((mbx & MBX_3) && (ha->port_no == 0))
                                        set_bit(MPI_RESET_NEEDED,
                                            &vha->dpc_flags);

                                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                        }
                } else if (mb[1] == 0) {
                        ql_log(ql_log_fatal, vha, 0x5005,
                            "Unrecoverable Hardware Error: adapter marked "
                            "OFFLINE!\n");
                        vha->flags.online = 0;
                        vha->device_flags |= DFLG_DEV_FAILED;
                } else
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                break;

        case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
                ql_log(ql_log_warn, vha, 0x5006,
                    "ISP Request Transfer Error (%x).\n",  mb[1]);

                vha->hw_err_cnt++;

                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                break;

        case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
                ql_log(ql_log_warn, vha, 0x5007,
                    "ISP Response Transfer Error (%x).\n", mb[1]);

                vha->hw_err_cnt++;

                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                break;

        case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
                ql_dbg(ql_dbg_async, vha, 0x5008,
                    "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
                break;

        case MBA_LOOP_INIT_ERR:
                ql_log(ql_log_warn, vha, 0x5090,
                    "LOOP INIT ERROR (%x).\n", mb[1]);
                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                break;

        case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
                ha->flags.lip_ae = 1;

                ql_dbg(ql_dbg_async, vha, 0x5009,
                    "LIP occurred (%x).\n", mb[1]);

                if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
                        atomic_set(&vha->loop_state, LOOP_DOWN);
                        atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
                        qla2x00_mark_all_devices_lost(vha);
                }

                if (vha->vp_idx) {
                        atomic_set(&vha->vp_state, VP_FAILED);
                        fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
                }

                set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
                set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);

                vha->flags.management_server_logged_in = 0;
                qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
                break;

        case MBA_LOOP_UP:               /* Loop Up Event */
                if (IS_QLA2100(ha) || IS_QLA2200(ha))
                        ha->link_data_rate = PORT_SPEED_1GB;
                else
                        ha->link_data_rate = mb[1];

                ql_log(ql_log_info, vha, 0x500a,
                    "LOOP UP detected (%s Gbps).\n",
                    qla2x00_get_link_speed_str(ha, ha->link_data_rate));

                if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
                        if (mb[2] & BIT_0)
                                ql_log(ql_log_info, vha, 0x11a0,
                                    "FEC=enabled (link up).\n");
                }

                vha->flags.management_server_logged_in = 0;
                qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);

                if (vha->link_down_time < vha->hw->port_down_retry_count) {
                        vha->short_link_down_cnt++;
                        vha->link_down_time = QLA2XX_MAX_LINK_DOWN_TIME;
                }

                break;

        case MBA_LOOP_DOWN:             /* Loop Down Event */
                SAVE_TOPO(ha);
                ha->flags.lip_ae = 0;
                ha->current_topology = 0;
                vha->link_down_time = 0;

                mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
                        ? rd_reg_word(&reg24->mailbox4) : 0;
                mbx = (IS_P3P_TYPE(ha)) ? rd_reg_word(&reg82->mailbox_out[4])
                        : mbx;
                ql_log(ql_log_info, vha, 0x500b,
                    "LOOP DOWN detected (%x %x %x %x).\n",
                    mb[1], mb[2], mb[3], mbx);

                if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
                        atomic_set(&vha->loop_state, LOOP_DOWN);
                        atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
                        /*
                         * In case of loop down, restore WWPN from
                         * NVRAM in case of FA-WWPN capable ISP
                         * Restore for Physical Port only
                         */
                        if (!vha->vp_idx) {
                                if (ha->flags.fawwpn_enabled &&
                                    (ha->current_topology == ISP_CFG_F)) {
                                        void *wwpn = ha->init_cb->port_name;

                                        memcpy(vha->port_name, wwpn, WWN_SIZE);
                                        fc_host_port_name(vha->host) =
                                            wwn_to_u64(vha->port_name);
                                        ql_dbg(ql_dbg_init + ql_dbg_verbose,
                                            vha, 0x00d8, "LOOP DOWN detected,"
                                            "restore WWPN %016llx\n",
                                            wwn_to_u64(vha->port_name));
                                }

                                clear_bit(VP_CONFIG_OK, &vha->vp_flags);
                        }

                        vha->device_flags |= DFLG_NO_CABLE;
                        qla2x00_mark_all_devices_lost(vha);
                }

                if (vha->vp_idx) {
                        atomic_set(&vha->vp_state, VP_FAILED);
                        fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
                }

                vha->flags.management_server_logged_in = 0;
                ha->link_data_rate = PORT_SPEED_UNKNOWN;
                qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
                break;

        case MBA_LIP_RESET:             /* LIP reset occurred */
                ql_dbg(ql_dbg_async, vha, 0x500c,
                    "LIP reset occurred (%x).\n", mb[1]);

                if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
                        atomic_set(&vha->loop_state, LOOP_DOWN);
                        atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
                        qla2x00_mark_all_devices_lost(vha);
                }

                if (vha->vp_idx) {
                        atomic_set(&vha->vp_state, VP_FAILED);
                        fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
                }

                set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);

                ha->operating_mode = LOOP;
                vha->flags.management_server_logged_in = 0;
                qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
                break;

        /* case MBA_DCBX_COMPLETE: */
        case MBA_POINT_TO_POINT:        /* Point-to-Point */
                ha->flags.lip_ae = 0;

                if (IS_QLA2100(ha))
                        break;

                if (IS_CNA_CAPABLE(ha)) {
                        ql_dbg(ql_dbg_async, vha, 0x500d,
                            "DCBX Completed -- %04x %04x %04x.\n",
                            mb[1], mb[2], mb[3]);
                        if (ha->notify_dcbx_comp && !vha->vp_idx)
                                complete(&ha->dcbx_comp);

                } else
                        ql_dbg(ql_dbg_async, vha, 0x500e,
                            "Asynchronous P2P MODE received.\n");

                /*
                 * Until there's a transition from loop down to loop up, treat
                 * this as loop down only.
                 */
                if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
                        atomic_set(&vha->loop_state, LOOP_DOWN);
                        if (!atomic_read(&vha->loop_down_timer))
                                atomic_set(&vha->loop_down_timer,
                                    LOOP_DOWN_TIME);
                        if (!N2N_TOPO(ha))
                                qla2x00_mark_all_devices_lost(vha);
                }

                if (vha->vp_idx) {
                        atomic_set(&vha->vp_state, VP_FAILED);
                        fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
                }

                if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
                        set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);

                set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
                set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);

                vha->flags.management_server_logged_in = 0;
                break;

        case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
                if (IS_QLA2100(ha))
                        break;

                ql_dbg(ql_dbg_async, vha, 0x500f,
                    "Configuration change detected: value=%x.\n", mb[1]);

                if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
                        atomic_set(&vha->loop_state, LOOP_DOWN);
                        if (!atomic_read(&vha->loop_down_timer))
                                atomic_set(&vha->loop_down_timer,
                                    LOOP_DOWN_TIME);
                        qla2x00_mark_all_devices_lost(vha);
                }

                if (vha->vp_idx) {
                        atomic_set(&vha->vp_state, VP_FAILED);
                        fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
                }

                set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
                set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
                break;

        case MBA_PORT_UPDATE:           /* Port database update */
                /*
                 * Handle only global and vn-port update events
                 *
                 * Relevant inputs:
                 * mb[1] = N_Port handle of changed port
                 * OR 0xffff for global event
                 * mb[2] = New login state
                 * 7 = Port logged out
                 * mb[3] = LSB is vp_idx, 0xff = all vps
                 *
                 * Skip processing if:
                 *       Event is global, vp_idx is NOT all vps,
                 *           vp_idx does not match
                 *       Event is not global, vp_idx does not match
                 */
                if (IS_QLA2XXX_MIDTYPE(ha) &&
                    ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
                        (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
                        break;

                if (mb[2] == 0x7) {
                        ql_dbg(ql_dbg_async, vha, 0x5010,
                            "Port %s %04x %04x %04x.\n",
                            mb[1] == 0xffff ? "unavailable" : "logout",
                            mb[1], mb[2], mb[3]);

                        if (mb[1] == 0xffff)
                                goto global_port_update;

                        if (mb[1] == NPH_SNS_LID(ha)) {
                                set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
                                set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
                                break;
                        }

                        /* use handle_cnt for loop id/nport handle */
                        if (IS_FWI2_CAPABLE(ha))
                                handle_cnt = NPH_SNS;
                        else
                                handle_cnt = SIMPLE_NAME_SERVER;
                        if (mb[1] == handle_cnt) {
                                set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
                                set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
                                break;
                        }

                        /* Port logout */
                        fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
                        if (!fcport)
                                break;
                        if (atomic_read(&fcport->state) != FCS_ONLINE)
                                break;
                        ql_dbg(ql_dbg_async, vha, 0x508a,
                            "Marking port lost loopid=%04x portid=%06x.\n",
                            fcport->loop_id, fcport->d_id.b24);
                        if (qla_ini_mode_enabled(vha)) {
                                fcport->logout_on_delete = 0;
                                qlt_schedule_sess_for_deletion(fcport);
                        }
                        break;

global_port_update:
                        if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
                                atomic_set(&vha->loop_state, LOOP_DOWN);
                                atomic_set(&vha->loop_down_timer,
                                    LOOP_DOWN_TIME);
                                vha->device_flags |= DFLG_NO_CABLE;
                                qla2x00_mark_all_devices_lost(vha);
                        }

                        if (vha->vp_idx) {
                                atomic_set(&vha->vp_state, VP_FAILED);
                                fc_vport_set_state(vha->fc_vport,
                                    FC_VPORT_FAILED);
                                qla2x00_mark_all_devices_lost(vha);
                        }

                        vha->flags.management_server_logged_in = 0;
                        ha->link_data_rate = PORT_SPEED_UNKNOWN;
                        break;
                }

                /*
                 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
                 * event etc. earlier indicating loop is down) then process
                 * it.  Otherwise ignore it and Wait for RSCN to come in.
                 */
                atomic_set(&vha->loop_down_timer, 0);
                if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
                        !ha->flags.n2n_ae  &&
                    atomic_read(&vha->loop_state) != LOOP_DEAD) {
                        ql_dbg(ql_dbg_async, vha, 0x5011,
                            "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
                            mb[1], mb[2], mb[3]);
                        break;
                }

                ql_dbg(ql_dbg_async, vha, 0x5012,
                    "Port database changed %04x %04x %04x.\n",
                    mb[1], mb[2], mb[3]);

                /*
                 * Mark all devices as missing so we will login again.
                 */
                atomic_set(&vha->loop_state, LOOP_UP);
                vha->scan.scan_retry = 0;

                set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
                set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
                set_bit(VP_CONFIG_OK, &vha->vp_flags);
                break;

        case MBA_RSCN_UPDATE:           /* State Change Registration */
                /* Check if the Vport has issued a SCR */
                if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
                        break;
                /* Only handle SCNs for our Vport index. */
                if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
                        break;

                ql_log(ql_log_warn, vha, 0x5013,
                       "RSCN database changed -- %04x %04x %04x.\n",
                       mb[1], mb[2], mb[3]);

                rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
                host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
                                | vha->d_id.b.al_pa;
                if (rscn_entry == host_pid) {
                        ql_dbg(ql_dbg_async, vha, 0x5014,
                            "Ignoring RSCN update to local host "
                            "port ID (%06x).\n", host_pid);
                        break;
                }

                /* Ignore reserved bits from RSCN-payload. */
                rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];

                /* Skip RSCNs for virtual ports on the same physical port */
                if (qla2x00_is_a_vp_did(vha, rscn_entry))
                        break;

                atomic_set(&vha->loop_down_timer, 0);
                vha->flags.management_server_logged_in = 0;
                {
                        struct event_arg ea;

                        memset(&ea, 0, sizeof(ea));
                        ea.id.b24 = rscn_entry;
                        ea.id.b.rsvd_1 = rscn_entry >> 24;
                        qla2x00_handle_rscn(vha, &ea);
                        qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
                }
                break;
        case MBA_CONGN_NOTI_RECV:
                if (!ha->flags.scm_enabled ||
                    mb[1] != QLA_CON_PRIMITIVE_RECEIVED)
                        break;

                if (mb[2] == QLA_CONGESTION_ARB_WARNING) {
                        ql_dbg(ql_dbg_async, vha, 0x509b,
                               "Congestion Warning %04x %04x.\n", mb[1], mb[2]);
                } else if (mb[2] == QLA_CONGESTION_ARB_ALARM) {
                        ql_log(ql_log_warn, vha, 0x509b,
                               "Congestion Alarm %04x %04x.\n", mb[1], mb[2]);
                }
                break;
        /* case MBA_RIO_RESPONSE: */
        case MBA_ZIO_RESPONSE:
                ql_dbg(ql_dbg_async, vha, 0x5015,
                    "[R|Z]IO update completion.\n");

                if (IS_FWI2_CAPABLE(ha))
                        qla24xx_process_response_queue(vha, rsp);
                else
                        qla2x00_process_response_queue(rsp);
                break;

        case MBA_DISCARD_RND_FRAME:
                ql_dbg(ql_dbg_async, vha, 0x5016,
                    "Discard RND Frame -- %04x %04x %04x.\n",
                    mb[1], mb[2], mb[3]);
                vha->interface_err_cnt++;
                break;

        case MBA_TRACE_NOTIFICATION:
                ql_dbg(ql_dbg_async, vha, 0x5017,
                    "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
                break;

        case MBA_ISP84XX_ALERT:
                ql_dbg(ql_dbg_async, vha, 0x5018,
                    "ISP84XX Alert Notification -- %04x %04x %04x.\n",
                    mb[1], mb[2], mb[3]);

                spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
                switch (mb[1]) {
                case A84_PANIC_RECOVERY:
                        ql_log(ql_log_info, vha, 0x5019,
                            "Alert 84XX: panic recovery %04x %04x.\n",
                            mb[2], mb[3]);
                        break;
                case A84_OP_LOGIN_COMPLETE:
                        ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
                        ql_log(ql_log_info, vha, 0x501a,
                            "Alert 84XX: firmware version %x.\n",
                            ha->cs84xx->op_fw_version);
                        break;
                case A84_DIAG_LOGIN_COMPLETE:
                        ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
                        ql_log(ql_log_info, vha, 0x501b,
                            "Alert 84XX: diagnostic firmware version %x.\n",
                            ha->cs84xx->diag_fw_version);
                        break;
                case A84_GOLD_LOGIN_COMPLETE:
                        ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
                        ha->cs84xx->fw_update = 1;
                        ql_log(ql_log_info, vha, 0x501c,
                            "Alert 84XX: gold firmware version %x.\n",
                            ha->cs84xx->gold_fw_version);
                        break;
                default:
                        ql_log(ql_log_warn, vha, 0x501d,
                            "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
                            mb[1], mb[2], mb[3]);
                }
                spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
                break;
        case MBA_DCBX_START:
                ql_dbg(ql_dbg_async, vha, 0x501e,
                    "DCBX Started -- %04x %04x %04x.\n",
                    mb[1], mb[2], mb[3]);
                break;
        case MBA_DCBX_PARAM_UPDATE:
                ql_dbg(ql_dbg_async, vha, 0x501f,
                    "DCBX Parameters Updated -- %04x %04x %04x.\n",
                    mb[1], mb[2], mb[3]);
                break;
        case MBA_FCF_CONF_ERR:
                ql_dbg(ql_dbg_async, vha, 0x5020,
                    "FCF Configuration Error -- %04x %04x %04x.\n",
                    mb[1], mb[2], mb[3]);
                break;
        case MBA_IDC_NOTIFY:
                if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
                        mb[4] = rd_reg_word(&reg24->mailbox4);
                        if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
                            (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
                            (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
                                set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
                                /*
                                 * Extend loop down timer since port is active.
                                 */
                                if (atomic_read(&vha->loop_state) == LOOP_DOWN)
                                        atomic_set(&vha->loop_down_timer,
                                            LOOP_DOWN_TIME);
                                qla2xxx_wake_dpc(vha);
                        }
                }
                fallthrough;
        case MBA_IDC_COMPLETE:
                if (ha->notify_lb_portup_comp && !vha->vp_idx)
                        complete(&ha->lb_portup_comp);
                fallthrough;
        case MBA_IDC_TIME_EXT:
                if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
                    IS_QLA8044(ha))
                        qla81xx_idc_event(vha, mb[0], mb[1]);
                break;

        case MBA_IDC_AEN:
                if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
                        vha->hw_err_cnt++;
                        qla27xx_handle_8200_aen(vha, mb);
                } else if (IS_QLA83XX(ha)) {
                        mb[4] = rd_reg_word(&reg24->mailbox4);
                        mb[5] = rd_reg_word(&reg24->mailbox5);
                        mb[6] = rd_reg_word(&reg24->mailbox6);
                        mb[7] = rd_reg_word(&reg24->mailbox7);
                        qla83xx_handle_8200_aen(vha, mb);
                } else {
                        ql_dbg(ql_dbg_async, vha, 0x5052,
                            "skip Heartbeat processing mb0-3=[0x%04x] [0x%04x] [0x%04x] [0x%04x]\n",
                            mb[0], mb[1], mb[2], mb[3]);
                }
                break;

        case MBA_DPORT_DIAGNOSTICS:
                ql_dbg(ql_dbg_async, vha, 0x5052,
                    "D-Port Diagnostics: %04x %04x %04x %04x\n",
                    mb[0], mb[1], mb[2], mb[3]);
                memcpy(vha->dport_data, mb, sizeof(vha->dport_data));
                if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
                        static char *results[] = {
                            "start", "done(pass)", "done(error)", "undefined" };
                        static char *types[] = {
                            "none", "dynamic", "static", "other" };
                        uint result = mb[1] >> 0 & 0x3;
                        uint type = mb[1] >> 6 & 0x3;
                        uint sw = mb[1] >> 15 & 0x1;
                        ql_dbg(ql_dbg_async, vha, 0x5052,
                            "D-Port Diagnostics: result=%s type=%s [sw=%u]\n",
                            results[result], types[type], sw);
                        if (result == 2) {
                                static char *reasons[] = {
                                    "reserved", "unexpected reject",
                                    "unexpected phase", "retry exceeded",
                                    "timed out", "not supported",
                                    "user stopped" };
                                uint reason = mb[2] >> 0 & 0xf;
                                uint phase = mb[2] >> 12 & 0xf;
                                ql_dbg(ql_dbg_async, vha, 0x5052,
                                    "D-Port Diagnostics: reason=%s phase=%u \n",
                                    reason < 7 ? reasons[reason] : "other",
                                    phase >> 1);
                        }
                }
                break;

        case MBA_TEMPERATURE_ALERT:
                ql_dbg(ql_dbg_async, vha, 0x505e,
                    "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
                break;

        case MBA_TRANS_INSERT:
                ql_dbg(ql_dbg_async, vha, 0x5091,
                    "Transceiver Insertion: %04x\n", mb[1]);
                set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
                break;

        case MBA_TRANS_REMOVE:
                ql_dbg(ql_dbg_async, vha, 0x5091, "Transceiver Removal\n");
                break;

        default:
                ql_dbg(ql_dbg_async, vha, 0x5057,
                    "Unknown AEN:%04x %04x %04x %04x\n",
                    mb[0], mb[1], mb[2], mb[3]);
        }

        qlt_async_event(mb[0], vha, mb);

        if (!vha->vp_idx && ha->num_vhosts)
                qla2x00_alert_all_vps(rsp, mb);
}

/**
 * qla2x00_process_completed_request() - Process a Fast Post response.
 * @vha: SCSI driver HA context
 * @req: request queue
 * @index: SRB index
 */
void
qla2x00_process_completed_request(struct scsi_qla_host *vha,
                                  struct req_que *req, uint32_t index)
{
        srb_t *sp;
        struct qla_hw_data *ha = vha->hw;

        /* Validate handle. */
        if (index >= req->num_outstanding_cmds) {
                ql_log(ql_log_warn, vha, 0x3014,
                    "Invalid SCSI command index (%x).\n", index);

                if (IS_P3P_TYPE(ha))
                        set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
                else
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                return;
        }

        sp = req->outstanding_cmds[index];
        if (sp) {
                /* Free outstanding command slot. */
                req->outstanding_cmds[index] = NULL;

                /* Save ISP completion status */
                sp->done(sp, DID_OK << 16);
        } else {
                ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");

                if (IS_P3P_TYPE(ha))
                        set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
                else
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
        }
}

srb_t *
qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
    struct req_que *req, void *iocb)
{
        struct qla_hw_data *ha = vha->hw;
        sts_entry_t *pkt = iocb;
        srb_t *sp;
        uint16_t index;

        if (pkt->handle == QLA_SKIP_HANDLE)
                return NULL;

        index = LSW(pkt->handle);
        if (index >= req->num_outstanding_cmds) {
                ql_log(ql_log_warn, vha, 0x5031,
                           "%s: Invalid command index (%x) type %8ph.\n",
                           func, index, iocb);
                if (IS_P3P_TYPE(ha))
                        set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
                else
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                return NULL;
        }
        sp = req->outstanding_cmds[index];
        if (!sp) {
                ql_log(ql_log_warn, vha, 0x5032,
                        "%s: Invalid completion handle (%x) -- timed-out.\n",
                        func, index);
                return NULL;
        }
        if (sp->handle != index) {
                ql_log(ql_log_warn, vha, 0x5033,
                        "%s: SRB handle (%x) mismatch %x.\n", func,
                        sp->handle, index);
                return NULL;
        }

        req->outstanding_cmds[index] = NULL;
        return sp;
}

static void
qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct mbx_entry *mbx)
{
        const char func[] = "MBX-IOCB";
        const char *type;
        fc_port_t *fcport;
        srb_t *sp;
        struct srb_iocb *lio;
        uint16_t *data;
        uint16_t status;

        sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
        if (!sp)
                return;

        lio = &sp->u.iocb_cmd;
        type = sp->name;
        fcport = sp->fcport;
        data = lio->u.logio.data;

        data[0] = MBS_COMMAND_ERROR;
        data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
            QLA_LOGIO_LOGIN_RETRIED : 0;
        if (mbx->entry_status) {
                ql_dbg(ql_dbg_async, vha, 0x5043,
                    "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
                    "entry-status=%x status=%x state-flag=%x "
                    "status-flags=%x.\n", type, sp->handle,
                    fcport->d_id.b.domain, fcport->d_id.b.area,
                    fcport->d_id.b.al_pa, mbx->entry_status,
                    le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
                    le16_to_cpu(mbx->status_flags));

                ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
                    mbx, sizeof(*mbx));

                goto logio_done;
        }

        status = le16_to_cpu(mbx->status);
        if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
            le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
                status = 0;
        if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
                ql_dbg(ql_dbg_async, vha, 0x5045,
                    "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
                    type, sp->handle, fcport->d_id.b.domain,
                    fcport->d_id.b.area, fcport->d_id.b.al_pa,
                    le16_to_cpu(mbx->mb1));

                data[0] = MBS_COMMAND_COMPLETE;
                if (sp->type == SRB_LOGIN_CMD) {
                        fcport->port_type = FCT_TARGET;
                        if (le16_to_cpu(mbx->mb1) & BIT_0)
                                fcport->port_type = FCT_INITIATOR;
                        else if (le16_to_cpu(mbx->mb1) & BIT_1)
                                fcport->flags |= FCF_FCP2_DEVICE;
                }
                goto logio_done;
        }

        data[0] = le16_to_cpu(mbx->mb0);
        switch (data[0]) {
        case MBS_PORT_ID_USED:
                data[1] = le16_to_cpu(mbx->mb1);
                break;
        case MBS_LOOP_ID_USED:
                break;
        default:
                data[0] = MBS_COMMAND_ERROR;
                break;
        }

        ql_log(ql_log_warn, vha, 0x5046,
            "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
            "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
            fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
            status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
            le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
            le16_to_cpu(mbx->mb7));

logio_done:
        sp->done(sp, 0);
}

static void
qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct mbx_24xx_entry *pkt)
{
        const char func[] = "MBX-IOCB2";
        struct qla_hw_data *ha = vha->hw;
        srb_t *sp;
        struct srb_iocb *si;
        u16 sz, i;
        int res;

        sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
        if (!sp)
                return;

        if (sp->type == SRB_SCSI_CMD ||
            sp->type == SRB_NVME_CMD ||
            sp->type == SRB_TM_CMD) {
                ql_log(ql_log_warn, vha, 0x509d,
                        "Inconsistent event entry type %d\n", sp->type);
                if (IS_P3P_TYPE(ha))
                        set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
                else
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                return;
        }

        si = &sp->u.iocb_cmd;
        sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));

        for (i = 0; i < sz; i++)
                si->u.mbx.in_mb[i] = pkt->mb[i];

        res = (si->u.mbx.in_mb[0] & MBS_MASK);

        sp->done(sp, res);
}

static void
qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct nack_to_isp *pkt)
{
        const char func[] = "nack";
        srb_t *sp;
        int res = 0;

        sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
        if (!sp)
                return;

        if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
                res = QLA_FUNCTION_FAILED;

        sp->done(sp, res);
}

static void
qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
    sts_entry_t *pkt, int iocb_type)
{
        const char func[] = "CT_IOCB";
        const char *type;
        srb_t *sp;
        struct bsg_job *bsg_job;
        struct fc_bsg_reply *bsg_reply;
        uint16_t comp_status;
        int res = 0;

        sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
        if (!sp)
                return;

        switch (sp->type) {
        case SRB_CT_CMD:
            bsg_job = sp->u.bsg_job;
            bsg_reply = bsg_job->reply;

            type = "ct pass-through";

            comp_status = le16_to_cpu(pkt->comp_status);

            /*
             * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
             * fc payload  to the caller
             */
            bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
            bsg_job->reply_len = sizeof(struct fc_bsg_reply);

            if (comp_status != CS_COMPLETE) {
                    if (comp_status == CS_DATA_UNDERRUN) {
                            res = DID_OK << 16;
                            bsg_reply->reply_payload_rcv_len =
                                le16_to_cpu(pkt->rsp_info_len);

                            ql_log(ql_log_warn, vha, 0x5048,
                                "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
                                type, comp_status,
                                bsg_reply->reply_payload_rcv_len);
                    } else {
                            ql_log(ql_log_warn, vha, 0x5049,
                                "CT pass-through-%s error comp_status=0x%x.\n",
                                type, comp_status);
                            res = DID_ERROR << 16;
                            bsg_reply->reply_payload_rcv_len = 0;
                    }
                    ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
                        pkt, sizeof(*pkt));
            } else {
                    res = DID_OK << 16;
                    bsg_reply->reply_payload_rcv_len =
                        bsg_job->reply_payload.payload_len;
                    bsg_job->reply_len = 0;
            }
            break;
        case SRB_CT_PTHRU_CMD:
            /*
             * borrowing sts_entry_24xx.comp_status.
             * same location as ct_entry_24xx.comp_status
             */
             res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
                 (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
                 sp->name);
             break;
        }

        sp->done(sp, res);
}

static void
qla24xx_els_ct_entry(scsi_qla_host_t *v, struct req_que *req,
    struct sts_entry_24xx *pkt, int iocb_type)
{
        struct els_sts_entry_24xx *ese = (struct els_sts_entry_24xx *)pkt;
        const char func[] = "ELS_CT_IOCB";
        const char *type;
        srb_t *sp;
        struct bsg_job *bsg_job;
        struct fc_bsg_reply *bsg_reply;
        uint16_t comp_status;
        uint32_t fw_status[3];
        int res, logit = 1;
        struct srb_iocb *els;
        uint n;
        scsi_qla_host_t *vha;
        struct els_sts_entry_24xx *e = (struct els_sts_entry_24xx *)pkt;

        sp = qla2x00_get_sp_from_handle(v, func, req, pkt);
        if (!sp)
                return;
        bsg_job = sp->u.bsg_job;
        vha = sp->vha;

        type = NULL;

        comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
        fw_status[1] = le32_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
        fw_status[2] = le32_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);

        switch (sp->type) {
        case SRB_ELS_CMD_RPT:
        case SRB_ELS_CMD_HST:
                type = "rpt hst";
                break;
        case SRB_ELS_CMD_HST_NOLOGIN:
                type = "els";
                {
                        struct els_entry_24xx *els = (void *)pkt;
                        struct qla_bsg_auth_els_request *p =
                                (struct qla_bsg_auth_els_request *)bsg_job->request;

                        ql_dbg(ql_dbg_user, vha, 0x700f,
                             "%s %s. portid=%02x%02x%02x status %x xchg %x bsg ptr %p\n",
                             __func__, sc_to_str(p->e.sub_cmd),
                             e->d_id[2], e->d_id[1], e->d_id[0],
                             comp_status, p->e.extra_rx_xchg_address, bsg_job);

                        if (!(le16_to_cpu(els->control_flags) & ECF_PAYLOAD_DESCR_MASK)) {
                                if (sp->remap.remapped) {
                                        n = sg_copy_from_buffer(bsg_job->reply_payload.sg_list,
                                                bsg_job->reply_payload.sg_cnt,
                                                sp->remap.rsp.buf,
                                                sp->remap.rsp.len);
                                        ql_dbg(ql_dbg_user + ql_dbg_verbose, vha, 0x700e,
                                           "%s: SG copied %x of %x\n",
                                           __func__, n, sp->remap.rsp.len);
                                } else {
                                        ql_dbg(ql_dbg_user, vha, 0x700f,
                                           "%s: NOT REMAPPED (error)...!!!\n",
                                           __func__);
                                }
                        }
                }
                break;
        case SRB_CT_CMD:
                type = "ct pass-through";
                break;
        case SRB_ELS_DCMD:
                type = "Driver ELS logo";
                if (iocb_type != ELS_IOCB_TYPE) {
                        ql_dbg(ql_dbg_user, vha, 0x5047,
                            "Completing %s: (%p) type=%d.\n",
                            type, sp, sp->type);
                        sp->done(sp, 0);
                        return;
                }
                break;
        case SRB_CT_PTHRU_CMD:
                /* borrowing sts_entry_24xx.comp_status.
                   same location as ct_entry_24xx.comp_status
                 */
                res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
                        (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
                        sp->name);
                sp->done(sp, res);
                return;
        default:
                ql_dbg(ql_dbg_user, vha, 0x503e,
                    "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
                return;
        }

        if (iocb_type == ELS_IOCB_TYPE) {
                els = &sp->u.iocb_cmd;
                els->u.els_plogi.fw_status[0] = cpu_to_le32(fw_status[0]);
                els->u.els_plogi.fw_status[1] = cpu_to_le32(fw_status[1]);
                els->u.els_plogi.fw_status[2] = cpu_to_le32(fw_status[2]);
                els->u.els_plogi.comp_status = cpu_to_le16(fw_status[0]);
                if (comp_status == CS_COMPLETE) {
                        res =  DID_OK << 16;
                } else {
                        if (comp_status == CS_DATA_UNDERRUN) {
                                res =  DID_OK << 16;
                                els->u.els_plogi.len = cpu_to_le16(le32_to_cpu(
                                        ese->total_byte_count));

                                if (sp->remap.remapped &&
                                    ((u8 *)sp->remap.rsp.buf)[0] == ELS_LS_ACC) {
                                        ql_dbg(ql_dbg_user, vha, 0x503f,
                                            "%s IOCB Done LS_ACC %02x%02x%02x -> %02x%02x%02x",
                                            __func__, e->s_id[0], e->s_id[2], e->s_id[1],
                                            e->d_id[2], e->d_id[1], e->d_id[0]);
                                        logit = 0;
                                }

                        } else if (comp_status == CS_PORT_LOGGED_OUT) {
                                ql_dbg(ql_dbg_disc, vha, 0x911e,
                                       "%s %d schedule session deletion\n",
                                       __func__, __LINE__);

                                els->u.els_plogi.len = 0;
                                res = DID_IMM_RETRY << 16;
                                qlt_schedule_sess_for_deletion(sp->fcport);
                        } else {
                                els->u.els_plogi.len = 0;
                                res = DID_ERROR << 16;
                        }

                        if (logit) {
                                if (sp->remap.remapped &&
                                    ((u8 *)sp->remap.rsp.buf)[0] == ELS_LS_RJT) {
                                        ql_dbg(ql_dbg_user, vha, 0x503f,
                                            "%s IOCB Done LS_RJT hdl=%x comp_status=0x%x\n",
                                            type, sp->handle, comp_status);

                                        ql_dbg(ql_dbg_user, vha, 0x503f,
                                            "subcode 1=0x%x subcode 2=0x%x bytes=0x%x %02x%02x%02x -> %02x%02x%02x\n",
                                            fw_status[1], fw_status[2],
                                            le32_to_cpu(((struct els_sts_entry_24xx *)
                                                pkt)->total_byte_count),
                                            e->s_id[0], e->s_id[2], e->s_id[1],
                                            e->d_id[2], e->d_id[1], e->d_id[0]);
                                } else {
                                        ql_log(ql_log_info, vha, 0x503f,
                                            "%s IOCB Done hdl=%x comp_status=0x%x\n",
                                            type, sp->handle, comp_status);
                                        ql_log(ql_log_info, vha, 0x503f,
                                            "subcode 1=0x%x subcode 2=0x%x bytes=0x%x %02x%02x%02x -> %02x%02x%02x\n",
                                            fw_status[1], fw_status[2],
                                            le32_to_cpu(((struct els_sts_entry_24xx *)
                                                pkt)->total_byte_count),
                                            e->s_id[0], e->s_id[2], e->s_id[1],
                                            e->d_id[2], e->d_id[1], e->d_id[0]);
                                }
                        }
                }
                goto els_ct_done;
        }

        /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
         * fc payload  to the caller
         */
        bsg_job = sp->u.bsg_job;
        bsg_reply = bsg_job->reply;
        bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
        bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);

        if (comp_status != CS_COMPLETE) {
                if (comp_status == CS_DATA_UNDERRUN) {
                        res = DID_OK << 16;
                        bsg_reply->reply_payload_rcv_len =
                                le32_to_cpu(ese->total_byte_count);

                        ql_dbg(ql_dbg_user, vha, 0x503f,
                            "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
                            "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
                            type, sp->handle, comp_status, fw_status[1], fw_status[2],
                            le32_to_cpu(ese->total_byte_count));
                } else {
                        ql_dbg(ql_dbg_user, vha, 0x5040,
                            "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
                            "error subcode 1=0x%x error subcode 2=0x%x.\n",
                            type, sp->handle, comp_status,
                            le32_to_cpu(ese->error_subcode_1),
                            le32_to_cpu(ese->error_subcode_2));
                        res = DID_ERROR << 16;
                        bsg_reply->reply_payload_rcv_len = 0;
                }
                memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
                       fw_status, sizeof(fw_status));
                ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
                    pkt, sizeof(*pkt));
        }
        else {
                res =  DID_OK << 16;
                bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
                bsg_job->reply_len = 0;
        }
els_ct_done:

        sp->done(sp, res);
}

static void
qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct logio_entry_24xx *logio)
{
        const char func[] = "LOGIO-IOCB";
        const char *type;
        fc_port_t *fcport;
        srb_t *sp;
        struct srb_iocb *lio;
        uint16_t *data;
        uint32_t iop[2];
        int logit = 1;

        sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
        if (!sp)
                return;

        lio = &sp->u.iocb_cmd;
        type = sp->name;
        fcport = sp->fcport;
        data = lio->u.logio.data;

        data[0] = MBS_COMMAND_ERROR;
        data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
                QLA_LOGIO_LOGIN_RETRIED : 0;
        if (logio->entry_status) {
                ql_log(ql_log_warn, fcport->vha, 0x5034,
                    "Async-%s error entry - %8phC hdl=%x"
                    "portid=%02x%02x%02x entry-status=%x.\n",
                    type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
                    fcport->d_id.b.area, fcport->d_id.b.al_pa,
                    logio->entry_status);
                ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
                    logio, sizeof(*logio));

                goto logio_done;
        }

        if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
                ql_dbg(ql_dbg_async, sp->vha, 0x5036,
                    "Async-%s complete: handle=%x pid=%06x wwpn=%8phC iop0=%x\n",
                    type, sp->handle, fcport->d_id.b24, fcport->port_name,
                    le32_to_cpu(logio->io_parameter[0]));

                vha->hw->exch_starvation = 0;
                data[0] = MBS_COMMAND_COMPLETE;

                if (sp->type == SRB_PRLI_CMD) {
                        lio->u.logio.iop[0] =
                            le32_to_cpu(logio->io_parameter[0]);
                        lio->u.logio.iop[1] =
                            le32_to_cpu(logio->io_parameter[1]);
                        goto logio_done;
                }

                if (sp->type != SRB_LOGIN_CMD)
                        goto logio_done;

                lio->u.logio.iop[1] = le32_to_cpu(logio->io_parameter[5]);
                if (le32_to_cpu(logio->io_parameter[5]) & LIO_COMM_FEAT_FCSP)
                        fcport->flags |= FCF_FCSP_DEVICE;

                iop[0] = le32_to_cpu(logio->io_parameter[0]);
                if (iop[0] & BIT_4) {
                        fcport->port_type = FCT_TARGET;
                        if (iop[0] & BIT_8)
                                fcport->flags |= FCF_FCP2_DEVICE;
                } else if (iop[0] & BIT_5)
                        fcport->port_type = FCT_INITIATOR;

                if (iop[0] & BIT_7)
                        fcport->flags |= FCF_CONF_COMP_SUPPORTED;

                if (logio->io_parameter[7] || logio->io_parameter[8])
                        fcport->supported_classes |= FC_COS_CLASS2;
                if (logio->io_parameter[9] || logio->io_parameter[10])
                        fcport->supported_classes |= FC_COS_CLASS3;

                goto logio_done;
        }

        iop[0] = le32_to_cpu(logio->io_parameter[0]);
        iop[1] = le32_to_cpu(logio->io_parameter[1]);
        lio->u.logio.iop[0] = iop[0];
        lio->u.logio.iop[1] = iop[1];
        switch (iop[0]) {
        case LSC_SCODE_PORTID_USED:
                data[0] = MBS_PORT_ID_USED;
                data[1] = LSW(iop[1]);
                logit = 0;
                break;
        case LSC_SCODE_NPORT_USED:
                data[0] = MBS_LOOP_ID_USED;
                logit = 0;
                break;
        case LSC_SCODE_CMD_FAILED:
                if (iop[1] == 0x0606) {
                        /*
                         * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
                         * Target side acked.
                         */
                        data[0] = MBS_COMMAND_COMPLETE;
                        goto logio_done;
                }
                data[0] = MBS_COMMAND_ERROR;
                break;
        case LSC_SCODE_NOXCB:
                vha->hw->exch_starvation++;
                if (vha->hw->exch_starvation > 5) {
                        ql_log(ql_log_warn, vha, 0xd046,
                            "Exchange starvation. Resetting RISC\n");

                        vha->hw->exch_starvation = 0;

                        if (IS_P3P_TYPE(vha->hw))
                                set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
                        else
                                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                        qla2xxx_wake_dpc(vha);
                }
                fallthrough;
        default:
                data[0] = MBS_COMMAND_ERROR;
                break;
        }

        if (logit)
                ql_log(ql_log_warn, sp->vha, 0x5037, "Async-%s failed: "
                       "handle=%x pid=%06x wwpn=%8phC comp_status=%x iop0=%x iop1=%x\n",
                       type, sp->handle, fcport->d_id.b24, fcport->port_name,
                       le16_to_cpu(logio->comp_status),
                       le32_to_cpu(logio->io_parameter[0]),
                       le32_to_cpu(logio->io_parameter[1]));
        else
                ql_dbg(ql_dbg_disc, sp->vha, 0x5037, "Async-%s failed: "
                       "handle=%x pid=%06x wwpn=%8phC comp_status=%x iop0=%x iop1=%x\n",
                       type, sp->handle, fcport->d_id.b24, fcport->port_name,
                       le16_to_cpu(logio->comp_status),
                       le32_to_cpu(logio->io_parameter[0]),
                       le32_to_cpu(logio->io_parameter[1]));

logio_done:
        sp->done(sp, 0);
}

static void
qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
{
        const char func[] = "TMF-IOCB";
        const char *type;
        fc_port_t *fcport;
        srb_t *sp;
        struct srb_iocb *iocb;
        struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
        u16 comp_status;

        sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
        if (!sp)
                return;

        comp_status = le16_to_cpu(sts->comp_status);
        iocb = &sp->u.iocb_cmd;
        type = sp->name;
        fcport = sp->fcport;
        iocb->u.tmf.data = QLA_SUCCESS;

        if (sts->entry_status) {
                ql_log(ql_log_warn, fcport->vha, 0x5038,
                    "Async-%s error - hdl=%x entry-status(%x).\n",
                    type, sp->handle, sts->entry_status);
                iocb->u.tmf.data = QLA_FUNCTION_FAILED;
        } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
                ql_log(ql_log_warn, fcport->vha, 0x5039,
                    "Async-%s error - hdl=%x completion status(%x).\n",
                    type, sp->handle, comp_status);
                iocb->u.tmf.data = QLA_FUNCTION_FAILED;
        } else if ((le16_to_cpu(sts->scsi_status) &
            SS_RESPONSE_INFO_LEN_VALID)) {
                if (le32_to_cpu(sts->rsp_data_len) < 4) {
                        ql_log(ql_log_warn, fcport->vha, 0x503b,
                            "Async-%s error - hdl=%x not enough response(%d).\n",
                            type, sp->handle, sts->rsp_data_len);
                } else if (sts->data[3]) {
                        ql_log(ql_log_warn, fcport->vha, 0x503c,
                            "Async-%s error - hdl=%x response(%x).\n",
                            type, sp->handle, sts->data[3]);
                        iocb->u.tmf.data = QLA_FUNCTION_FAILED;
                }
        }

        switch (comp_status) {
        case CS_PORT_LOGGED_OUT:
        case CS_PORT_CONFIG_CHG:
        case CS_PORT_BUSY:
        case CS_INCOMPLETE:
        case CS_PORT_UNAVAILABLE:
        case CS_TIMEOUT:
        case CS_RESET:
                if (atomic_read(&fcport->state) == FCS_ONLINE) {
                        ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
                               "-Port to be marked lost on fcport=%02x%02x%02x, current port state= %s comp_status %x.\n",
                               fcport->d_id.b.domain, fcport->d_id.b.area,
                               fcport->d_id.b.al_pa,
                               port_state_str[FCS_ONLINE],
                               comp_status);

                        qlt_schedule_sess_for_deletion(fcport);
                }
                break;

        default:
                break;
        }

        if (iocb->u.tmf.data != QLA_SUCCESS)
                ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
                    sts, sizeof(*sts));

        sp->done(sp, 0);
}

static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
    void *tsk, srb_t *sp)
{
        fc_port_t *fcport;
        struct srb_iocb *iocb;
        struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
        uint16_t        state_flags;
        struct nvmefc_fcp_req *fd;
        uint16_t        ret = QLA_SUCCESS;
        __le16          comp_status = sts->comp_status;
        int             logit = 0;

        iocb = &sp->u.iocb_cmd;
        fcport = sp->fcport;
        iocb->u.nvme.comp_status = comp_status;
        state_flags  = le16_to_cpu(sts->state_flags);
        fd = iocb->u.nvme.desc;

        if (unlikely(iocb->u.nvme.aen_op))
                atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
        else
                sp->qpair->cmd_completion_cnt++;

        if (unlikely(comp_status != CS_COMPLETE))
                logit = 1;

        fd->transferred_length = fd->payload_length -
            le32_to_cpu(sts->residual_len);

        /*
         * State flags: Bit 6 and 0.
         * If 0 is set, we don't care about 6.
         * both cases resp was dma'd to host buffer
         * if both are 0, that is good path case.
         * if six is set and 0 is clear, we need to
         * copy resp data from status iocb to resp buffer.
         */
        if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
                iocb->u.nvme.rsp_pyld_len = 0;
        } else if ((state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP)) ==
                        (SF_FCP_RSP_DMA | SF_NVME_ERSP)) {
                /* Response already DMA'd to fd->rspaddr. */
                iocb->u.nvme.rsp_pyld_len = sts->nvme_rsp_pyld_len;
        } else if ((state_flags & SF_FCP_RSP_DMA)) {
                /*
                 * Non-zero value in first 12 bytes of NVMe_RSP IU, treat this
                 * as an error.
                 */
                iocb->u.nvme.rsp_pyld_len = 0;
                fd->transferred_length = 0;
                ql_dbg(ql_dbg_io, fcport->vha, 0x307a,
                        "Unexpected values in NVMe_RSP IU.\n");
                logit = 1;
        } else if (state_flags & SF_NVME_ERSP) {
                uint32_t *inbuf, *outbuf;
                uint16_t iter;

                inbuf = (uint32_t *)&sts->nvme_ersp_data;
                outbuf = (uint32_t *)fd->rspaddr;
                iocb->u.nvme.rsp_pyld_len = sts->nvme_rsp_pyld_len;
                if (unlikely(le16_to_cpu(iocb->u.nvme.rsp_pyld_len) >
                    sizeof(struct nvme_fc_ersp_iu))) {
                        if (ql_mask_match(ql_dbg_io)) {
                                WARN_ONCE(1, "Unexpected response payload length %u.\n",
                                    iocb->u.nvme.rsp_pyld_len);
                                ql_log(ql_log_warn, fcport->vha, 0x5100,
                                    "Unexpected response payload length %u.\n",
                                    iocb->u.nvme.rsp_pyld_len);
                        }
                        iocb->u.nvme.rsp_pyld_len =
                                cpu_to_le16(sizeof(struct nvme_fc_ersp_iu));
                }
                iter = le16_to_cpu(iocb->u.nvme.rsp_pyld_len) >> 2;
                for (; iter; iter--)
                        *outbuf++ = swab32(*inbuf++);
        }

        if (state_flags & SF_NVME_ERSP) {
                struct nvme_fc_ersp_iu *rsp_iu = fd->rspaddr;
                u32 tgt_xfer_len;

                tgt_xfer_len = be32_to_cpu(rsp_iu->xfrd_len);
                if (fd->transferred_length != tgt_xfer_len) {
                        ql_log(ql_log_warn, fcport->vha, 0x3079,
                               "Dropped frame(s) detected (sent/rcvd=%u/%u).\n",
                               tgt_xfer_len, fd->transferred_length);
                        logit = 1;
                } else if (le16_to_cpu(comp_status) == CS_DATA_UNDERRUN) {
                        /*
                         * Do not log if this is just an underflow and there
                         * is no data loss.
                         */
                        logit = 0;
                }
        }

        if (unlikely(logit))
                ql_log(ql_dbg_io, fcport->vha, 0x5060,
                   "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
                   sp->name, sp->handle, comp_status,
                   fd->transferred_length, le32_to_cpu(sts->residual_len),
                   sts->ox_id);

        /*
         * If transport error then Failure (HBA rejects request)
         * otherwise transport will handle.
         */
        switch (le16_to_cpu(comp_status)) {
        case CS_COMPLETE:
                break;

        case CS_RESET:
        case CS_PORT_UNAVAILABLE:
        case CS_PORT_LOGGED_OUT:
                fcport->nvme_flag |= NVME_FLAG_RESETTING;
                if (atomic_read(&fcport->state) == FCS_ONLINE) {
                        ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
                               "Port to be marked lost on fcport=%06x, current "
                               "port state= %s comp_status %x.\n",
                               fcport->d_id.b24, port_state_str[FCS_ONLINE],
                               comp_status);

                        qlt_schedule_sess_for_deletion(fcport);
                }
                fallthrough;
        case CS_ABORTED:
        case CS_PORT_BUSY:
                fd->transferred_length = 0;
                iocb->u.nvme.rsp_pyld_len = 0;
                ret = QLA_ABORTED;
                break;
        case CS_DATA_UNDERRUN:
                break;
        default:
                ret = QLA_FUNCTION_FAILED;
                break;
        }
        sp->done(sp, ret);
}

static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
    struct vp_ctrl_entry_24xx *vce)
{
        const char func[] = "CTRLVP-IOCB";
        srb_t *sp;
        int rval = QLA_SUCCESS;

        sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
        if (!sp)
                return;

        if (vce->entry_status != 0) {
                ql_dbg(ql_dbg_vport, vha, 0x10c4,
                    "%s: Failed to complete IOCB -- error status (%x)\n",
                    sp->name, vce->entry_status);
                rval = QLA_FUNCTION_FAILED;
        } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
                ql_dbg(ql_dbg_vport, vha, 0x10c5,
                    "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
                    sp->name, le16_to_cpu(vce->comp_status),
                    le16_to_cpu(vce->vp_idx_failed));
                rval = QLA_FUNCTION_FAILED;
        } else {
                ql_dbg(ql_dbg_vport, vha, 0x10c6,
                    "Done %s.\n", __func__);
        }

        sp->rc = rval;
        sp->done(sp, rval);
}

/* Process a single response queue entry. */
static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
                                           struct rsp_que *rsp,
                                           sts_entry_t *pkt)
{
        sts21_entry_t *sts21_entry;
        sts22_entry_t *sts22_entry;
        uint16_t handle_cnt;
        uint16_t cnt;

        switch (pkt->entry_type) {
        case STATUS_TYPE:
                qla2x00_status_entry(vha, rsp, pkt);
                break;
        case STATUS_TYPE_21:
                sts21_entry = (sts21_entry_t *)pkt;
                handle_cnt = sts21_entry->handle_count;
                for (cnt = 0; cnt < handle_cnt; cnt++)
                        qla2x00_process_completed_request(vha, rsp->req,
                                                sts21_entry->handle[cnt]);
                break;
        case STATUS_TYPE_22:
                sts22_entry = (sts22_entry_t *)pkt;
                handle_cnt = sts22_entry->handle_count;
                for (cnt = 0; cnt < handle_cnt; cnt++)
                        qla2x00_process_completed_request(vha, rsp->req,
                                                sts22_entry->handle[cnt]);
                break;
        case STATUS_CONT_TYPE:
                qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
                break;
        case MBX_IOCB_TYPE:
                qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
                break;
        case CT_IOCB_TYPE:
                qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
                break;
        default:
                /* Type Not Supported. */
                ql_log(ql_log_warn, vha, 0x504a,
                       "Received unknown response pkt type %x entry status=%x.\n",
                       pkt->entry_type, pkt->entry_status);
                break;
        }
}

/**
 * qla2x00_process_response_queue() - Process response queue entries.
 * @rsp: response queue
 */
void
qla2x00_process_response_queue(struct rsp_que *rsp)
{
        struct scsi_qla_host *vha;
        struct qla_hw_data *ha = rsp->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        sts_entry_t     *pkt;

        vha = pci_get_drvdata(ha->pdev);

        if (!vha->flags.online)
                return;

        while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
                pkt = (sts_entry_t *)rsp->ring_ptr;

                rsp->ring_index++;
                if (rsp->ring_index == rsp->length) {
                        rsp->ring_index = 0;
                        rsp->ring_ptr = rsp->ring;
                } else {
                        rsp->ring_ptr++;
                }

                if (pkt->entry_status != 0) {
                        qla2x00_error_entry(vha, rsp, pkt);
                        ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
                        wmb();
                        continue;
                }

                qla2x00_process_response_entry(vha, rsp, pkt);
                ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
                wmb();
        }

        /* Adjust ring index */
        wrt_reg_word(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
}

static inline void
qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
                     uint32_t sense_len, struct rsp_que *rsp, int res)
{
        struct scsi_qla_host *vha = sp->vha;
        struct scsi_cmnd *cp = GET_CMD_SP(sp);
        uint32_t track_sense_len;

        if (sense_len >= SCSI_SENSE_BUFFERSIZE)
                sense_len = SCSI_SENSE_BUFFERSIZE;

        SET_CMD_SENSE_LEN(sp, sense_len);
        SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
        track_sense_len = sense_len;

        if (sense_len > par_sense_len)
                sense_len = par_sense_len;

        memcpy(cp->sense_buffer, sense_data, sense_len);

        SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
        track_sense_len -= sense_len;
        SET_CMD_SENSE_LEN(sp, track_sense_len);

        if (track_sense_len != 0) {
                rsp->status_srb = sp;
                cp->result = res;
        }

        if (sense_len) {
                ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
                    "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
                    sp->vha->host_no, cp->device->id, cp->device->lun,
                    cp);
                ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
                    cp->sense_buffer, sense_len);
        }
}

struct scsi_dif_tuple {
        __be16 guard;       /* Checksum */
        __be16 app_tag;         /* APPL identifier */
        __be32 ref_tag;         /* Target LBA or indirect LBA */
};

/*
 * Checks the guard or meta-data for the type of error
 * detected by the HBA. In case of errors, we set the
 * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
 * to indicate to the kernel that the HBA detected error.
 */
static inline int
qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
{
        struct scsi_qla_host *vha = sp->vha;
        struct scsi_cmnd *cmd = GET_CMD_SP(sp);
        uint8_t         *ap = &sts24->data[12];
        uint8_t         *ep = &sts24->data[20];
        uint32_t        e_ref_tag, a_ref_tag;
        uint16_t        e_app_tag, a_app_tag;
        uint16_t        e_guard, a_guard;

        /*
         * swab32 of the "data" field in the beginning of qla2x00_status_entry()
         * would make guard field appear at offset 2
         */
        a_guard   = get_unaligned_le16(ap + 2);
        a_app_tag = get_unaligned_le16(ap + 0);
        a_ref_tag = get_unaligned_le32(ap + 4);
        e_guard   = get_unaligned_le16(ep + 2);
        e_app_tag = get_unaligned_le16(ep + 0);
        e_ref_tag = get_unaligned_le32(ep + 4);

        ql_dbg(ql_dbg_io, vha, 0x3023,
            "iocb(s) %p Returned STATUS.\n", sts24);

        ql_dbg(ql_dbg_io, vha, 0x3024,
            "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
            " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
            " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
            cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
            a_app_tag, e_app_tag, a_guard, e_guard);

        /*
         * Ignore sector if:
         * For type     3: ref & app tag is all 'f's
         * For type 0,1,2: app tag is all 'f's
         */
        if (a_app_tag == be16_to_cpu(T10_PI_APP_ESCAPE) &&
            (scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3 ||
             a_ref_tag == be32_to_cpu(T10_PI_REF_ESCAPE))) {
                uint32_t blocks_done, resid;
                sector_t lba_s = scsi_get_lba(cmd);

                /* 2TB boundary case covered automatically with this */
                blocks_done = e_ref_tag - (uint32_t)lba_s + 1;

                resid = scsi_bufflen(cmd) - (blocks_done *
                    cmd->device->sector_size);

                scsi_set_resid(cmd, resid);
                cmd->result = DID_OK << 16;

                /* Update protection tag */
                if (scsi_prot_sg_count(cmd)) {
                        uint32_t i, j = 0, k = 0, num_ent;
                        struct scatterlist *sg;
                        struct t10_pi_tuple *spt;

                        /* Patch the corresponding protection tags */
                        scsi_for_each_prot_sg(cmd, sg,
                            scsi_prot_sg_count(cmd), i) {
                                num_ent = sg_dma_len(sg) / 8;
                                if (k + num_ent < blocks_done) {
                                        k += num_ent;
                                        continue;
                                }
                                j = blocks_done - k - 1;
                                k = blocks_done;
                                break;
                        }

                        if (k != blocks_done) {
                                ql_log(ql_log_warn, vha, 0x302f,
                                    "unexpected tag values tag:lba=%x:%llx)\n",
                                    e_ref_tag, (unsigned long long)lba_s);
                                return 1;
                        }

                        spt = page_address(sg_page(sg)) + sg->offset;
                        spt += j;

                        spt->app_tag = T10_PI_APP_ESCAPE;
                        if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
                                spt->ref_tag = T10_PI_REF_ESCAPE;
                }

                return 0;
        }

        /* check guard */
        if (e_guard != a_guard) {
                scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1);
                set_host_byte(cmd, DID_ABORT);
                return 1;
        }

        /* check ref tag */
        if (e_ref_tag != a_ref_tag) {
                scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3);
                set_host_byte(cmd, DID_ABORT);
                return 1;
        }

        /* check appl tag */
        if (e_app_tag != a_app_tag) {
                scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2);
                set_host_byte(cmd, DID_ABORT);
                return 1;
        }

        return 1;
}

static void
qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
                                  struct req_que *req, uint32_t index)
{
        struct qla_hw_data *ha = vha->hw;
        srb_t *sp;
        uint16_t        comp_status;
        uint16_t        scsi_status;
        uint16_t thread_id;
        uint32_t rval = EXT_STATUS_OK;
        struct bsg_job *bsg_job = NULL;
        struct fc_bsg_request *bsg_request;
        struct fc_bsg_reply *bsg_reply;
        sts_entry_t *sts = pkt;
        struct sts_entry_24xx *sts24 = pkt;

        /* Validate handle. */
        if (index >= req->num_outstanding_cmds) {
                ql_log(ql_log_warn, vha, 0x70af,
                    "Invalid SCSI completion handle 0x%x.\n", index);
                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                return;
        }

        sp = req->outstanding_cmds[index];
        if (!sp) {
                ql_log(ql_log_warn, vha, 0x70b0,
                    "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
                    req->id, index);

                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                return;