qla_isr.c 66.1 KB
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/*
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 * QLogic Fibre Channel HBA Driver
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 * Copyright (c)  2003-2008 QLogic Corporation
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 *
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 * See LICENSE.qla2xxx for copyright and licensing details.
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 */
#include "qla_def.h"

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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_bsg_fc.h>
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#include <scsi/scsi_eh.h>
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static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
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static void qla2x00_process_completed_request(struct scsi_qla_host *,
	struct req_que *, uint32_t);
static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
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static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
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static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
	sts_entry_t *);
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/**
 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
 * @irq:
 * @dev_id: SCSI driver HA context
 *
 * Called by system whenever the host adapter generates an interrupt.
 *
 * Returns handled flag.
 */
irqreturn_t
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qla2100_intr_handler(int irq, void *dev_id)
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{
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	scsi_qla_host_t	*vha;
	struct qla_hw_data *ha;
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	struct device_reg_2xxx __iomem *reg;
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	int		status;
	unsigned long	iter;
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	uint16_t	hccr;
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	uint16_t	mb[4];
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	struct rsp_que *rsp;
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	unsigned long	flags;
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	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
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		printk(KERN_INFO
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		    "%s(): NULL response queue pointer\n", __func__);
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		return (IRQ_NONE);
	}

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

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	spin_lock_irqsave(&ha->hardware_lock, flags);
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	vha = pci_get_drvdata(ha->pdev);
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	for (iter = 50; iter--; ) {
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		hccr = RD_REG_WORD(&reg->hccr);
		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 hammmer to get
			 * out of the RISC PAUSED state.
			 */
			WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
			RD_REG_WORD(&reg->hccr);

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			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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			break;
		} else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
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			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. */
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			mb[0] = RD_MAILBOX_REG(ha, reg, 0);
			if (mb[0] > 0x3fff && mb[0] < 0x8000) {
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				qla2x00_mbx_completion(vha, mb[0]);
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				status |= MBX_INTERRUPT;
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			} 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);
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				qla2x00_async_event(vha, rsp, mb);
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			} else {
				/*EMPTY*/
				DEBUG2(printk("scsi(%ld): Unrecognized "
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				    "interrupt type (%d).\n",
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				    vha->host_no, mb[0]));
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			}
			/* Release mailbox registers. */
			WRT_REG_WORD(&reg->semaphore, 0);
			RD_REG_WORD(&reg->semaphore);
		} else {
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			qla2x00_process_response_queue(rsp);
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			WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
			RD_REG_WORD(&reg->hccr);
		}
	}
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	spin_unlock_irqrestore(&ha->hardware_lock, flags);
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	if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
	    (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
		set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
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		complete(&ha->mbx_intr_comp);
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	}

	return (IRQ_HANDLED);
}

/**
 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 * @irq:
 * @dev_id: SCSI driver HA context
 *
 * Called by system whenever the host adapter generates an interrupt.
 *
 * Returns handled flag.
 */
irqreturn_t
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qla2300_intr_handler(int irq, void *dev_id)
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{
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	scsi_qla_host_t	*vha;
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	struct device_reg_2xxx __iomem *reg;
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	int		status;
	unsigned long	iter;
	uint32_t	stat;
	uint16_t	hccr;
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	uint16_t	mb[4];
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	struct rsp_que *rsp;
	struct qla_hw_data *ha;
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	unsigned long	flags;
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	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
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		printk(KERN_INFO
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		    "%s(): NULL response queue pointer\n", __func__);
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		return (IRQ_NONE);
	}

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

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

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			hccr = RD_REG_WORD(&reg->hccr);
			if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
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				qla_printk(KERN_INFO, ha, "Parity error -- "
				    "HCCR=%x, Dumping firmware!\n", hccr);
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			else
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				qla_printk(KERN_INFO, ha, "RISC paused -- "
				    "HCCR=%x, Dumping firmware!\n", hccr);
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			/*
			 * Issue a "HARD" reset in order for the RISC
			 * interrupt bit to be cleared.  Schedule a big
			 * hammmer to get out of the RISC PAUSED state.
			 */
			WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
			RD_REG_WORD(&reg->hccr);
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			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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			break;
		} else if ((stat & HSR_RISC_INT) == 0)
			break;

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

			/* Release mailbox registers. */
			WRT_REG_WORD(&reg->semaphore, 0);
			break;
		case 0x12:
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			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);
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			qla2x00_async_event(vha, rsp, mb);
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			break;
		case 0x13:
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			qla2x00_process_response_queue(rsp);
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			break;
		case 0x15:
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			mb[0] = MBA_CMPLT_1_16BIT;
			mb[1] = MSW(stat);
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			qla2x00_async_event(vha, rsp, mb);
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			break;
		case 0x16:
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			mb[0] = MBA_SCSI_COMPLETION;
			mb[1] = MSW(stat);
			mb[2] = RD_MAILBOX_REG(ha, reg, 2);
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			qla2x00_async_event(vha, rsp, mb);
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			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
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			    "(%d).\n",
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			    vha->host_no, stat & 0xff));
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			break;
		}
		WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
		RD_REG_WORD_RELAXED(&reg->hccr);
	}
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	spin_unlock_irqrestore(&ha->hardware_lock, flags);
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	if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
	    (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
		set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
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		complete(&ha->mbx_intr_comp);
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	}

	return (IRQ_HANDLED);
}

/**
 * qla2x00_mbx_completion() - Process mailbox command completions.
 * @ha: SCSI driver HA context
 * @mb0: Mailbox0 register
 */
static void
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qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
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{
	uint16_t	cnt;
	uint16_t __iomem *wptr;
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	struct qla_hw_data *ha = vha->hw;
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	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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	/* Load return mailbox registers. */
	ha->flags.mbox_int = 1;
	ha->mailbox_out[0] = mb0;
	wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);

	for (cnt = 1; cnt < ha->mbx_count; cnt++) {
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		if (IS_QLA2200(ha) && cnt == 8)
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			wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
		if (cnt == 4 || cnt == 5)
			ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
		else
			ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
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		wptr++;
	}

	if (ha->mcp) {
		DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
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		    __func__, vha->host_no, ha->mcp->mb[0]));
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	} else {
		DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
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		    __func__, vha->host_no));
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	}
}

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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;
	uint16_t __iomem *wptr;
	uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];

	/* Seed data -- mailbox1 -> mailbox7. */
	wptr = (uint16_t __iomem *)&reg24->mailbox1;
	for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
		mb[cnt] = RD_REG_WORD(wptr);

	DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
	    "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
	    event[aen & 0xff],
	    mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));

	/* Acknowledgement needed? [Notify && non-zero timeout]. */
	timeout = (descr >> 8) & 0xf;
	if (aen != MBA_IDC_NOTIFY || !timeout)
		return;

	DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
	    "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));

	rval = qla2x00_post_idc_ack_work(vha, mb);
	if (rval != QLA_SUCCESS)
		qla_printk(KERN_WARNING, vha->hw,
		    "IDC failed to post ACK.\n");
}

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/**
 * qla2x00_async_event() - Process aynchronous events.
 * @ha: SCSI driver HA context
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 * @mb: Mailbox registers (0 - 3)
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 */
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void
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qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
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{
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#define LS_UNKNOWN	2
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	static char	*link_speeds[] = { "1", "2", "?", "4", "8", "10" };
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	char		*link_speed;
	uint16_t	handle_cnt;
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	uint16_t	cnt, mbx;
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	uint32_t	handles[5];
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	struct qla_hw_data *ha = vha->hw;
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	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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	struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
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	uint32_t	rscn_entry, host_pid;
	uint8_t		rscn_queue_index;
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	unsigned long	flags;
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	/* Setup to process RIO completion. */
	handle_cnt = 0;
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	if (IS_QLA8XXX_TYPE(ha))
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		goto skip_rio;
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	switch (mb[0]) {
	case MBA_SCSI_COMPLETION:
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		handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
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		handle_cnt = 1;
		break;
	case MBA_CMPLT_1_16BIT:
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		handles[0] = mb[1];
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		handle_cnt = 1;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_2_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
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		handle_cnt = 2;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_3_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
		handles[2] = mb[3];
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		handle_cnt = 3;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_4_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
		handles[2] = mb[3];
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		handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
		handle_cnt = 4;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_5_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
		handles[2] = mb[3];
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		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:
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		handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
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		handles[1] = le32_to_cpu(
		    ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
		    RD_MAILBOX_REG(ha, reg, 6));
		handle_cnt = 2;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	default:
		break;
	}
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skip_rio:
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	switch (mb[0]) {
	case MBA_SCSI_COMPLETION:	/* Fast Post */
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		if (!vha->flags.online)
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			break;

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

	case MBA_RESET:			/* Reset */
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		DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
			vha->host_no));
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		set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
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		break;

	case MBA_SYSTEM_ERR:		/* System Error */
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		mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
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		qla_printk(KERN_INFO, ha,
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		    "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
		    "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
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		ha->isp_ops->fw_dump(vha, 1);
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		if (IS_FWI2_CAPABLE(ha)) {
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			if (mb[1] == 0 && mb[2] == 0) {
				qla_printk(KERN_ERR, ha,
				    "Unrecoverable Hardware Error: adapter "
				    "marked OFFLINE!\n");
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				vha->flags.online = 0;
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			} else
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				set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		} else if (mb[1] == 0) {
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			qla_printk(KERN_INFO, ha,
			    "Unrecoverable Hardware Error: adapter marked "
			    "OFFLINE!\n");
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			vha->flags.online = 0;
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		} else
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			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		break;

	case MBA_REQ_TRANSFER_ERR:	/* Request Transfer Error */
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		DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
		    vha->host_no, mb[1]));
		qla_printk(KERN_WARNING, ha,
		    "ISP Request Transfer Error (%x).\n", mb[1]);
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		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		break;

	case MBA_RSP_TRANSFER_ERR:	/* Response Transfer Error */
		DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
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		    vha->host_no));
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		qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");

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

	case MBA_WAKEUP_THRES:		/* Request Queue Wake-up */
		DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
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		    vha->host_no));
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		break;

	case MBA_LIP_OCCURRED:		/* Loop Initialization Procedure */
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		DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
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		    mb[1]));
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		qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
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		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, 1);
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		}

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

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		set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
		set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
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467 468
		vha->flags.management_server_logged_in = 0;
		qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
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		break;

	case MBA_LOOP_UP:		/* Loop Up Event */
		if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
			link_speed = link_speeds[0];
474
			ha->link_data_rate = PORT_SPEED_1GB;
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		} else {
476
			link_speed = link_speeds[LS_UNKNOWN];
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			if (mb[1] < 5)
				link_speed = link_speeds[mb[1]];
479 480
			else if (mb[1] == 0x13)
				link_speed = link_speeds[5];
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			ha->link_data_rate = mb[1];
		}

		DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
485
		    vha->host_no, link_speed));
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		qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
		    link_speed);

489 490
		vha->flags.management_server_logged_in = 0;
		qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
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		break;

	case MBA_LOOP_DOWN:		/* Loop Down Event */
494
		mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
495
		DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
496 497 498 499 500
		    "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
		    mbx));
		qla_printk(KERN_INFO, ha,
		    "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
		    mbx);
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502 503 504 505 506
		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, 1);
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		}

509 510 511
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
512 513
		}

514
		vha->flags.management_server_logged_in = 0;
515
		ha->link_data_rate = PORT_SPEED_UNKNOWN;
516
		qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
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		break;

	case MBA_LIP_RESET:		/* LIP reset occurred */
		DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
521
		    vha->host_no, mb[1]));
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		qla_printk(KERN_INFO, ha,
523
		    "LIP reset occurred (%x).\n", mb[1]);
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525 526 527 528
		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, 1);
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		}

531 532 533
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
534 535
		}

536
		set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
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		ha->operating_mode = LOOP;
539 540
		vha->flags.management_server_logged_in = 0;
		qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
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		break;

543
	/* case MBA_DCBX_COMPLETE: */
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	case MBA_POINT_TO_POINT:	/* Point-to-Point */
		if (IS_QLA2100(ha))
			break;

548
		if (IS_QLA8XXX_TYPE(ha))
549 550 551 552 553
			DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
			    "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
		else
			DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
			    "received.\n", vha->host_no));
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		/*
		 * Until there's a transition from loop down to loop up, treat
		 * this as loop down only.
		 */
559 560 561 562
		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,
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				    LOOP_DOWN_TIME);
564
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

567 568 569
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
570 571
		}

572 573 574 575 576
		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);
577 578

		ha->flags.gpsc_supported = 1;
579
		vha->flags.management_server_logged_in = 0;
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		break;

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

		DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
		    "received.\n",
588
		    vha->host_no));
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		qla_printk(KERN_INFO, ha,
		    "Configuration change detected: value=%x.\n", mb[1]);

592 593 594 595
		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,
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				    LOOP_DOWN_TIME);
597
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

600 601 602
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
603 604
		}

605 606
		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
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		break;

	case MBA_PORT_UPDATE:		/* Port database update */
610 611 612 613 614 615 616 617 618 619 620 621 622 623 624
		/*
		 * 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
		 */
625 626 627 628
		if (IS_QLA2XXX_MIDTYPE(ha) &&
		    ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
			(mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
			break;
629

630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649
		/* Global event -- port logout or port unavailable. */
		if (mb[1] == 0xffff && mb[2] == 0x7) {
			DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
			    vha->host_no));
			DEBUG(printk(KERN_INFO
			    "scsi(%ld): Port unavailable %04x %04x %04x.\n",
			    vha->host_no, mb[1], mb[2], mb[3]));

			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, 1);
			}

			if (vha->vp_idx) {
				atomic_set(&vha->vp_state, VP_FAILED);
				fc_vport_set_state(vha->fc_vport,
				    FC_VPORT_FAILED);
650
				qla2x00_mark_all_devices_lost(vha, 1);
651 652 653 654 655 656 657
			}

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

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		/*
659
		 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
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		 * event etc. earlier indicating loop is down) then process
		 * it.  Otherwise ignore it and Wait for RSCN to come in.
		 */
663 664 665
		atomic_set(&vha->loop_down_timer, 0);
		if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
		    atomic_read(&vha->loop_state) != LOOP_DEAD) {
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			DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
667
			    "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
668
			    mb[2], mb[3]));
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			break;
		}

		DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
673
		    vha->host_no));
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		DEBUG(printk(KERN_INFO
675
		    "scsi(%ld): Port database changed %04x %04x %04x.\n",
676
		    vha->host_no, mb[1], mb[2], mb[3]));
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		/*
		 * Mark all devices as missing so we will login again.
		 */
681
		atomic_set(&vha->loop_state, LOOP_UP);
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683
		qla2x00_mark_all_devices_lost(vha, 1);
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685
		vha->flags.rscn_queue_overflow = 1;
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687 688
		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
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		break;

	case MBA_RSCN_UPDATE:		/* State Change Registration */
692
		/* Check if the Vport has issued a SCR */
693
		if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
694 695
			break;
		/* Only handle SCNs for our Vport index. */
696
		if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
697
			break;
698

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		DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
700
		    vha->host_no));
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		DEBUG(printk(KERN_INFO
702
		    "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
703
		    vha->host_no, mb[1], mb[2], mb[3]));
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705
		rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
706 707
		host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
				| vha->d_id.b.al_pa;
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		if (rscn_entry == host_pid) {
			DEBUG(printk(KERN_INFO
			    "scsi(%ld): Ignoring RSCN update to local host "
			    "port ID (%06x)\n",
712
			    vha->host_no, host_pid));
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			break;
		}

716 717
		/* Ignore reserved bits from RSCN-payload. */
		rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
718
		rscn_queue_index = vha->rscn_in_ptr + 1;
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		if (rscn_queue_index == MAX_RSCN_COUNT)
			rscn_queue_index = 0;
721 722 723
		if (rscn_queue_index != vha->rscn_out_ptr) {
			vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
			vha->rscn_in_ptr = rscn_queue_index;
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		} else {
725
			vha->flags.rscn_queue_overflow = 1;
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		}

728 729 730
		atomic_set(&vha->loop_state, LOOP_UPDATE);
		atomic_set(&vha->loop_down_timer, 0);
		vha->flags.management_server_logged_in = 0;
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732 733 734
		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		set_bit(RSCN_UPDATE, &vha->dpc_flags);
		qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
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		break;

	/* case MBA_RIO_RESPONSE: */
	case MBA_ZIO_RESPONSE:
739
		DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
740
		    vha->host_no));
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742
		if (IS_FWI2_CAPABLE(ha))
743
			qla24xx_process_response_queue(vha, rsp);
744
		else
745
			qla2x00_process_response_queue(rsp);
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		break;
747 748 749

	case MBA_DISCARD_RND_FRAME:
		DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
750
		    "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
751
		break;
752 753 754

	case MBA_TRACE_NOTIFICATION:
		DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
755
		vha->host_no, mb[1], mb[2]));
756
		break;
757 758 759

	case MBA_ISP84XX_ALERT:
		DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
760
		    "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792

		spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
		switch (mb[1]) {
		case A84_PANIC_RECOVERY:
			qla_printk(KERN_INFO, ha, "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];
			DEBUG2(qla_printk(KERN_INFO, ha, "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];
			DEBUG2(qla_printk(KERN_INFO, ha, "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;
			DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
			    "firmware version %x\n",
			    ha->cs84xx->gold_fw_version));
			break;
		default:
			qla_printk(KERN_ERR, ha,
			    "Alert 84xx: Invalid Alert %04x %04x %04x\n",
			    mb[1], mb[2], mb[3]);
		}
		spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
		break;
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807
	case MBA_DCBX_START:
		DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
		    vha->host_no, mb[1], mb[2], mb[3]));
		break;
	case MBA_DCBX_PARAM_UPDATE:
		DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
		    "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
		break;
	case MBA_FCF_CONF_ERR:
		DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
		    "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
		break;
	case MBA_IDC_COMPLETE:
	case MBA_IDC_NOTIFY:
	case MBA_IDC_TIME_EXT:
808
		qla81xx_idc_event(vha, mb[0], mb[1]);
809
		break;
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	}
811

812
	if (!vha->vp_idx && ha->num_vhosts)
813
		qla2x00_alert_all_vps(rsp, mb);
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}

/**
 * qla2x00_process_completed_request() - Process a Fast Post response.
 * @ha: SCSI driver HA context
 * @index: SRB index
 */
static void
822 823
qla2x00_process_completed_request(struct scsi_qla_host *vha,
				struct req_que *req, uint32_t index)
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{
	srb_t *sp;
826
	struct qla_hw_data *ha = vha->hw;
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	/* Validate handle. */
	if (index >= MAX_OUTSTANDING_COMMANDS) {
		DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
831
		    vha->host_no, index));
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		qla_printk(KERN_WARNING, ha,
		    "Invalid SCSI completion handle %d.\n", index);

835
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		return;
	}

839
	sp = req->outstanding_cmds[index];
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	if (sp) {
		/* Free outstanding command slot. */
842
		req->outstanding_cmds[index] = NULL;
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		/* Save ISP completion status */
		sp->cmd->result = DID_OK << 16;
846
		qla2x00_sp_compl(ha, sp);
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	} else {
848
		DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
849
			" handle(0x%x)\n", vha->host_no, req->id, index));
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		qla_printk(KERN_WARNING, ha,
		    "Invalid ISP SCSI completion handle\n");

853
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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	}
}

857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885
static 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 = NULL;
	uint16_t index;

	index = LSW(pkt->handle);
	if (index >= MAX_OUTSTANDING_COMMANDS) {
		qla_printk(KERN_WARNING, ha,
		    "%s: Invalid completion handle (%x).\n", func, index);
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
		goto done;
	}
	sp = req->outstanding_cmds[index];
	if (!sp) {
		qla_printk(KERN_WARNING, ha,
		    "%s: Invalid completion handle (%x) -- timed-out.\n", func,
		    index);
		return sp;
	}
	if (sp->handle != index) {
		qla_printk(KERN_WARNING, ha,
		    "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
		    index);
		return NULL;
	}
886

887
	req->outstanding_cmds[index] = NULL;
888

889 890 891 892 893 894 895 896 897 898 899 900
done:
	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;
901 902
	struct srb_iocb *lio;
	struct srb_ctx *ctx;
903
	uint16_t *data;
904
	uint16_t status;
905 906 907 908 909

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

910 911 912
	ctx = sp->ctx;
	lio = ctx->u.iocb_cmd;
	type = ctx->name;
913
	fcport = sp->fcport;
914
	data = lio->u.logio.data;
915

916
	data[0] = MBS_COMMAND_ERROR;
917
	data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
918
	    QLA_LOGIO_LOGIN_RETRIED : 0;
919 920 921 922 923 924 925 926 927 928
	if (mbx->entry_status) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error entry - entry-status=%x "
		    "status=%x state-flag=%x status-flags=%x.\n",
		    fcport->vha->host_no, sp->handle, type,
		    mbx->entry_status, le16_to_cpu(mbx->status),
		    le16_to_cpu(mbx->state_flags),
		    le16_to_cpu(mbx->status_flags)));
		DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));

929
		goto logio_done;
930 931
	}

932
	status = le16_to_cpu(mbx->status);
933
	if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
934 935 936
	    le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
		status = 0;
	if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
937 938 939 940 941 942
		DEBUG2(printk(KERN_DEBUG
		    "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
		    fcport->vha->host_no, sp->handle, type,
		    le16_to_cpu(mbx->mb1)));

		data[0] = MBS_COMMAND_COMPLETE;
943
		if (ctx->type == SRB_LOGIN_CMD) {
944 945 946 947 948
			fcport->port_type = FCT_TARGET;
			if (le16_to_cpu(mbx->mb1) & BIT_0)
				fcport->port_type = FCT_INITIATOR;
			if (le16_to_cpu(mbx->mb1) & BIT_1)
				fcport->flags |= FCF_FCP2_DEVICE;
949
		}
950
		goto logio_done;
951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967
	}

	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;
	}

	DEBUG2(printk(KERN_WARNING
	    "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
	    "mb6=%x mb7=%x.\n",
968
	    fcport->vha->host_no, sp->handle, type, status,
969 970 971 972
	    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)));

973
logio_done:
974
	lio->done(sp);
975 976
}

977 978 979 980 981 982 983 984
static void
qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct sts_entry_24xx *pkt, int iocb_type)
{
	const char func[] = "ELS_CT_IOCB";
	const char *type;
	struct qla_hw_data *ha = vha->hw;
	srb_t *sp;
985
	struct srb_ctx *sp_bsg;
986 987 988 989 990 991 992 993
	struct fc_bsg_job *bsg_job;
	uint16_t comp_status;
	uint32_t fw_status[3];
	uint8_t* fw_sts_ptr;

	sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
	if (!sp)
		return;
994 995
	sp_bsg = sp->ctx;
	bsg_job = sp_bsg->u.bsg_job;
996 997

	type = NULL;
998
	switch (sp_bsg->type) {
999 1000 1001 1002 1003 1004 1005 1006 1007 1008
	case SRB_ELS_CMD_RPT:
	case SRB_ELS_CMD_HST:
		type = "els";
		break;
	case SRB_CT_CMD:
		type = "ct pass-through";
		break;
	default:
		qla_printk(KERN_WARNING, ha,
		    "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1009
		    sp_bsg->type);
1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062
		return;
	}

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

	/* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
	 * fc payload  to the caller
	 */
	bsg_job->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) {
			bsg_job->reply->result = DID_OK << 16;
			bsg_job->reply->reply_payload_rcv_len =
				le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);

			DEBUG2(qla_printk(KERN_WARNING, ha,
			    "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
			    "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
				vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
				le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
			fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
			memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
		}
		else {
			DEBUG2(qla_printk(KERN_WARNING, ha,
			    "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
			    "error subcode 1=0x%x error subcode 2=0x%x.\n",
				vha->host_no, sp->handle, type, comp_status,
				le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
				le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
			bsg_job->reply->result = DID_ERROR << 16;
			bsg_job->reply->reply_payload_rcv_len = 0;
			fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
			memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
		}
		DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
	}
	else {
		bsg_job->reply->result =  DID_OK << 16;;
		bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
		bsg_job->reply_len = 0;
	}

	dma_unmap_sg(&ha->pdev->dev,
	    bsg_job->request_payload.sg_list,
	    bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
	dma_unmap_sg(&ha->pdev->dev,
	    bsg_job->reply_payload.sg_list,
	    bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1063 1064
	if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
	    (sp_bsg->type == SRB_CT_CMD))
1065 1066 1067 1068 1069 1070
		kfree(sp->fcport);
	kfree(sp->ctx);
	mempool_free(sp, ha->srb_mempool);
	bsg_job->job_done(bsg_job);
}

1071 1072 1073 1074 1075 1076 1077 1078
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;
1079 1080
	struct srb_iocb *lio;
	struct srb_ctx *ctx;
1081
	uint16_t *data;
1082 1083 1084 1085 1086 1087
	uint32_t iop[2];

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

1088 1089 1090
	ctx = sp->ctx;
	lio = ctx->u.iocb_cmd;
	type = ctx->name;
1091
	fcport = sp->fcport;
1092
	data = lio->u.logio.data;
1093

1094
	data[0] = MBS_COMMAND_ERROR;
1095
	data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1096
		QLA_LOGIO_LOGIN_RETRIED : 0;
1097 1098 1099 1100 1101 1102 1103
	if (logio->entry_status) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
		    fcport->vha->host_no, sp->handle, type,
		    logio->entry_status));
		DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));

1104
		goto logio_done;
1105 1106 1107 1108 1109 1110 1111 1112 1113
	}

	if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
		DEBUG2(printk(KERN_DEBUG
		    "scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
		    fcport->vha->host_no, sp->handle, type,
		    le32_to_cpu(logio->io_parameter[0])));

		data[0] = MBS_COMMAND_COMPLETE;
1114
		if (ctx->type != SRB_LOGIN_CMD)
1115
			goto logio_done;
1116 1117 1118 1119 1120

		iop[0] = le32_to_cpu(logio->io_parameter[0]);
		if (iop[0] & BIT_4) {
			fcport->port_type = FCT_TARGET;
			if (iop[0] & BIT_8)
1121
				fcport->flags |= FCF_FCP2_DEVICE;
1122 1123 1124 1125 1126 1127 1128 1129
		}
		if (iop[0] & BIT_5)
			fcport->port_type = FCT_INITIATOR;
		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;

1130
		goto logio_done;
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160
	}

	iop[0] = le32_to_cpu(logio->io_parameter[0]);
	iop[1] = le32_to_cpu(logio->io_parameter[1]);
	switch (iop[0]) {
	case LSC_SCODE_PORTID_USED:
		data[0] = MBS_PORT_ID_USED;
		data[1] = LSW(iop[1]);
		break;
	case LSC_SCODE_NPORT_USED:
		data[0] = MBS_LOOP_ID_USED;
		break;
	case LSC_SCODE_CMD_FAILED:
		if ((iop[1] & 0xff) == 0x05) {
			data[0] = MBS_NOT_LOGGED_IN;
			break;
		}
		/* Fall through. */
	default:
		data[0] = MBS_COMMAND_ERROR;
		break;
	}

	DEBUG2(printk(KERN_WARNING
	    "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
	    fcport->vha->host_no, sp->handle, type,
	    le16_to_cpu(logio->comp_status),
	    le32_to_cpu(logio->io_parameter[0]),
	    le32_to_cpu(logio->io_parameter[1])));

1161
logio_done:
1162
	lio->done(sp);
1163 1164
}

1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
static void
qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct tsk_mgmt_entry *tsk)
{
	const char func[] = "TMF-IOCB";
	const char *type;
	fc_port_t *fcport;
	srb_t *sp;
	struct srb_iocb *iocb;
	struct srb_ctx *ctx;
	struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
	int error = 1;

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

	ctx = sp->ctx;
	iocb = ctx->u.iocb_cmd;
	type = ctx->name;
	fcport = sp->fcport;

	if (sts->entry_status) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error - entry-status(%x).\n",
		    fcport->vha->host_no, sp->handle, type,
		    sts->entry_status));
	} else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error - completion status(%x).\n",
		    fcport->vha->host_no, sp->handle, type,
		    sts->comp_status));
	} else if (!(le16_to_cpu(sts->scsi_status) &
	    SS_RESPONSE_INFO_LEN_VALID)) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error - no response info(%x).\n",
		    fcport->vha->host_no, sp->handle, type,
		    sts->scsi_status));
	} else if (le32_to_cpu(sts->rsp_data_len) < 4) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error - not enough response(%d).\n",
		    fcport->vha->host_no, sp->handle, type,
		    sts->rsp_data_len));
	} else if (sts->data[3]) {
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error - response(%x).\n",
		    fcport->vha->host_no, sp->handle, type,
		    sts->data[3]));
	} else {
		error = 0;
	}

	if (error) {
		iocb->u.tmf.data = error;
		DEBUG2(qla2x00_dump_buffer((uint8_t *)sts, sizeof(*sts)));
	}

	iocb->done(sp);
}

static void
qla24xx_marker_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
    struct mrk_entry_24xx *mrk)
{
	const char func[] = "MRK-IOCB";
	const char *type;
	fc_port_t *fcport;
	srb_t *sp;
	struct srb_iocb *iocb;
	struct srb_ctx *ctx;
	struct sts_entry_24xx *sts = (struct sts_entry_24xx *)mrk;

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

	ctx = sp->ctx;
	iocb = ctx->u.iocb_cmd;
	type = ctx->name;
	fcport = sp->fcport;

	if (sts->entry_status) {
		iocb->u.marker.data = 1;
		DEBUG2(printk(KERN_WARNING
		    "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
		    fcport->vha->host_no, sp->handle, type,
		    sts->entry_status));
		DEBUG2(qla2x00_dump_buffer((uint8_t *)mrk, sizeof(*sts)));
	}

	iocb->done(sp);
}

L
Linus Torvalds 已提交
1258 1259 1260 1261 1262
/**
 * qla2x00_process_response_queue() - Process response queue entries.
 * @ha: SCSI driver HA context
 */
void
1263
qla2x00_process_response_queue(struct rsp_que *rsp)
L
Linus Torvalds 已提交
1264
{
1265 1266
	struct scsi_qla_host *vha;
	struct qla_hw_data *ha = rsp->hw;
1267
	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
L
Linus Torvalds 已提交
1268 1269 1270
	sts_entry_t	*pkt;
	uint16_t        handle_cnt;
	uint16_t        cnt;
1271

1272
	vha = pci_get_drvdata(ha->pdev);
L
Linus Torvalds 已提交
1273

1274
	if (!vha->flags.online)
L
Linus Torvalds 已提交
1275 1276
		return;

1277 1278
	while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
		pkt = (sts_entry_t *)rsp->ring_ptr;
L
Linus Torvalds 已提交
1279

1280 1281 1282 1283
		rsp->ring_index++;
		if (rsp->ring_index == rsp->length) {
			rsp->ring_index = 0;
			rsp->ring_ptr = rsp->ring;
L
Linus Torvalds 已提交
1284
		} else {
1285
			rsp->ring_ptr++;
L
Linus Torvalds 已提交
1286 1287 1288 1289
		}

		if (pkt->entry_status != 0) {
			DEBUG3(printk(KERN_INFO
1290
			    "scsi(%ld): Process error entry.\n", vha->host_no));
L
Linus Torvalds 已提交
1291

1292
			qla2x00_error_entry(vha, rsp, pkt);
L
Linus Torvalds 已提交
1293 1294 1295 1296 1297 1298 1299
			((response_t *)pkt)->signature = RESPONSE_PROCESSED;
			wmb();
			continue;
		}

		switch (pkt->entry_type) {
		case STATUS_TYPE:
1300
			qla2x00_status_entry(vha, rsp, pkt);
L
Linus Torvalds 已提交
1301 1302 1303 1304
			break;
		case STATUS_TYPE_21:
			handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
			for (cnt = 0; cnt < handle_cnt; cnt++) {
1305
				qla2x00_process_completed_request(vha, rsp->req,
L
Linus Torvalds 已提交
1306 1307 1308 1309 1310 1311
				    ((sts21_entry_t *)pkt)->handle[cnt]);
			}
			break;
		case STATUS_TYPE_22:
			handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
			for (cnt = 0; cnt < handle_cnt; cnt++) {
1312
				qla2x00_process_completed_request(vha, rsp->req,
L
Linus Torvalds 已提交
1313 1314 1315 1316
				    ((sts22_entry_t *)pkt)->handle[cnt]);
			}
			break;
		case STATUS_CONT_TYPE:
1317
			qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
L
Linus Torvalds 已提交
1318
			break;
1319 1320 1321
		case MBX_IOCB_TYPE:
			qla2x00_mbx_iocb_entry(vha, rsp->req,
			    (struct mbx_entry *)pkt);
1322
			break;
L
Linus Torvalds 已提交
1323 1324 1325 1326 1327
		default:
			/* Type Not Supported. */
			DEBUG4(printk(KERN_WARNING
			    "scsi(%ld): Received unknown response pkt type %x "
			    "entry status=%x.\n",
1328
			    vha->host_no, pkt->entry_type, pkt->entry_status));
L
Linus Torvalds 已提交
1329 1330 1331 1332 1333 1334 1335
			break;
		}
		((response_t *)pkt)->signature = RESPONSE_PROCESSED;
		wmb();
	}

	/* Adjust ring index */
1336
	WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
L
Linus Torvalds 已提交
1337 1338
}

1339
static inline void
1340 1341
qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
	struct rsp_que *rsp)
1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357
{
	struct scsi_cmnd *cp = sp->cmd;

	if (sense_len >= SCSI_SENSE_BUFFERSIZE)
		sense_len = SCSI_SENSE_BUFFERSIZE;

	sp->request_sense_length = sense_len;
	sp->request_sense_ptr = cp->sense_buffer;
	if (sp->request_sense_length > 32)
		sense_len = 32;

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

	sp->request_sense_ptr += sense_len;
	sp->request_sense_length -= sense_len;
	if (sp->request_sense_length != 0)
1358
		rsp->status_srb = sp;
1359 1360

	DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1361
	    "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
1362 1363
	    cp->device->channel, cp->device->id, cp->device->lun, cp,
	    cp->serial_number));
1364
	if (sense_len)
1365
		DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1366 1367
}

1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
struct scsi_dif_tuple {
	__be16 guard;       /* Checksum */
	__be16 app_tag;         /* APPL identifer */
	__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 void
qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
{
	struct scsi_cmnd *cmd = sp->cmd;
	struct scsi_dif_tuple	*ep =
			(struct scsi_dif_tuple *)&sts24->data[20];
	struct scsi_dif_tuple	*ap =
			(struct scsi_dif_tuple *)&sts24->data[12];
	uint32_t	e_ref_tag, a_ref_tag;
	uint16_t	e_app_tag, a_app_tag;
	uint16_t	e_guard, a_guard;

	e_ref_tag = be32_to_cpu(ep->ref_tag);
	a_ref_tag = be32_to_cpu(ap->ref_tag);
	e_app_tag = be16_to_cpu(ep->app_tag);
	a_app_tag = be16_to_cpu(ap->app_tag);
	e_guard = be16_to_cpu(ep->guard);
	a_guard = be16_to_cpu(ap->guard);

	DEBUG18(printk(KERN_DEBUG
	    "%s(): iocb(s) %p Returned STATUS\n", __func__, sts24));

	DEBUG18(printk(KERN_ERR "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));


	/* check guard */
	if (e_guard != a_guard) {
		scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
		    0x10, 0x1);
		set_driver_byte(cmd, DRIVER_SENSE);
		set_host_byte(cmd, DID_ABORT);
		cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
		return;
	}

	/* check appl tag */
	if (e_app_tag != a_app_tag) {
		scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
		    0x10, 0x2);
		set_driver_byte(cmd, DRIVER_SENSE);
		set_host_byte(cmd, DID_ABORT);
		cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
		return;
	}

	/* check ref tag */
	if (e_ref_tag != a_ref_tag) {
		scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
		    0x10, 0x3);
		set_driver_byte(cmd, DRIVER_SENSE);
		set_host_byte(cmd, DID_ABORT);
		cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
		return;
	}
}

L
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1440 1441 1442 1443 1444 1445
/**
 * qla2x00_status_entry() - Process a Status IOCB entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
1446
qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
L
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1447 1448 1449 1450
{
	srb_t		*sp;
	fc_port_t	*fcport;
	struct scsi_cmnd *cp;
1451 1452
	sts_entry_t *sts;
	struct sts_entry_24xx *sts24;
L
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1453 1454
	uint16_t	comp_status;
	uint16_t	scsi_status;
1455
	uint16_t	ox_id;
L
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1456 1457
	uint8_t		lscsi_status;
	int32_t		resid;
1458
	uint32_t	sense_len, rsp_info_len, resid_len, fw_resid_len;
1459
	uint8_t		*rsp_info, *sense_data;
1460
	struct qla_hw_data *ha = vha->hw;
1461 1462 1463
	uint32_t handle;
	uint16_t que;
	struct req_que *req;
1464
	int logit = 1;
1465 1466 1467

	sts = (sts_entry_t *) pkt;
	sts24 = (struct sts_entry_24xx *) pkt;
1468
	if (IS_FWI2_CAPABLE(ha)) {
1469 1470 1471 1472 1473 1474
		comp_status = le16_to_cpu(sts24->comp_status);
		scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
	} else {
		comp_status = le16_to_cpu(sts->comp_status);
		scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
	}
1475 1476 1477
	handle = (uint32_t) LSW(sts->handle);
	que = MSW(sts->handle);
	req = ha->req_q_map[que];
1478

L
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1479
	/* Fast path completion. */
1480
	if (comp_status == CS_COMPLETE && scsi_status == 0) {
1481
		qla2x00_process_completed_request(vha, req, handle);
L
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1482 1483 1484 1485 1486

		return;
	}

	/* Validate handle. */
1487 1488 1489
	if (handle < MAX_OUTSTANDING_COMMANDS) {
		sp = req->outstanding_cmds[handle];
		req->outstanding_cmds[handle] = NULL;
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1490 1491 1492 1493
	} else
		sp = NULL;

	if (sp == NULL) {
1494 1495 1496
		qla_printk(KERN_WARNING, ha,
		    "scsi(%ld): Invalid status handle (0x%x).\n", vha->host_no,
		    sts->handle);
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1498 1499
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
		qla2xxx_wake_dpc(vha);
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		return;
	}
	cp = sp->cmd;
	if (cp == NULL) {
		qla_printk(KERN_WARNING, ha,
1505 1506
		    "scsi(%ld): Command already returned (0x%x/%p).\n",
		    vha->host_no, sts->handle, sp);
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1507 1508 1509 1510

		return;
	}

1511
  	lscsi_status = scsi_status & STATUS_MASK;
L
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1512

1513
	fcport = sp->fcport;
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1514

1515
	ox_id = 0;
1516
	sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1517
	if (IS_FWI2_CAPABLE(ha)) {
1518 1519 1520 1521 1522 1523 1524 1525
		if (scsi_status & SS_SENSE_LEN_VALID)
			sense_len = le32_to_cpu(sts24->sense_len);
		if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
			rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
		if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
			resid_len = le32_to_cpu(sts24->rsp_residual_count);
		if (comp_status == CS_DATA_UNDERRUN)
			fw_resid_len = le32_to_cpu(sts24->residual_len);
1526 1527 1528
		rsp_info = sts24->data;
		sense_data = sts24->data;
		host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1529
		ox_id = le16_to_cpu(sts24->ox_id);
1530
	} else {
1531 1532 1533 1534
		if (scsi_status & SS_SENSE_LEN_VALID)
			sense_len = le16_to_cpu(sts->req_sense_length);
		if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
			rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1535 1536 1537 1538 1539
		resid_len = le32_to_cpu(sts->residual_length);
		rsp_info = sts->rsp_info;
		sense_data = sts->req_sense_data;
	}

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	/* Check for any FCP transport errors. */
	if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1542
		/* Sense data lies beyond any FCP RESPONSE data. */
1543
		if (IS_FWI2_CAPABLE(ha))
1544 1545
			sense_data += rsp_info_len;
		if (rsp_info_len > 3 && rsp_info[3]) {
1546 1547 1548 1549
			DEBUG2(qla_printk(KERN_INFO, ha,
			    "scsi(%ld:%d:%d): FCP I/O protocol failure "
			    "(0x%x/0x%x).\n", vha->host_no, cp->device->id,
			    cp->device->lun, rsp_info_len, rsp_info[3]));
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1550 1551

			cp->result = DID_BUS_BUSY << 16;
1552
			goto out;
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		}
	}

1556 1557 1558 1559 1560
	/* Check for overrun. */
	if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
	    scsi_status & SS_RESIDUAL_OVER)
		comp_status = CS_DATA_OVERRUN;

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	/*
	 * Based on Host and scsi status generate status code for Linux
	 */
	switch (comp_status) {
	case CS_COMPLETE:
1566
	case CS_QUEUE_FULL:
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		if (scsi_status == 0) {
			cp->result = DID_OK << 16;
			break;
		}
		if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1572
			resid = resid_len;
1573
			scsi_set_resid(cp, resid);
1574 1575

			if (!lscsi_status &&
1576
			    ((unsigned)(scsi_bufflen(cp) - resid) <
1577 1578
			     cp->underflow)) {
				qla_printk(KERN_INFO, ha,
1579 1580 1581 1582
				    "scsi(%ld:%d:%d): Mid-layer underflow "
				    "detected (0x%x of 0x%x bytes).\n",
				    vha->host_no, cp->device->id,
				    cp->device->lun, resid, scsi_bufflen(cp));
1583 1584 1585 1586

				cp->result = DID_ERROR << 16;
				break;
			}
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		}
		cp->result = DID_OK << 16 | lscsi_status;

1590
		if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1591 1592 1593
			DEBUG2(qla_printk(KERN_INFO, ha,
			    "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
			    vha->host_no, cp->device->id, cp->device->lun));
1594 1595
			break;
		}
1596
		logit = 0;
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		if (lscsi_status != SS_CHECK_CONDITION)
			break;

1600
		memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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		if (!(scsi_status & SS_SENSE_LEN_VALID))
			break;

1604
		qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
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		break;

	case CS_DATA_UNDERRUN:
1608
		/* Use F/W calculated residual length. */
1609 1610 1611 1612
		resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
		scsi_set_resid(cp, resid);
		if (scsi_status & SS_RESIDUAL_UNDER) {
			if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1613 1614 1615
				DEBUG2(qla_printk(KERN_INFO, ha,
				    "scsi(%ld:%d:%d) Dropped frame(s) detected "
				    "(0x%x of 0x%x bytes).\n", vha->host_no,
1616 1617 1618 1619 1620
				    cp->device->id, cp->device->lun, resid,
				    scsi_bufflen(cp)));

				cp->result = DID_ERROR << 16 | lscsi_status;
				break;
1621
			}
1622

1623 1624 1625 1626
			if (!lscsi_status &&
			    ((unsigned)(scsi_bufflen(cp) - resid) <
			    cp->underflow)) {
				qla_printk(KERN_INFO, ha,
1627 1628 1629
				    "scsi(%ld:%d:%d): Mid-layer underflow "
				    "detected (0x%x of 0x%x bytes).\n",
				    vha->host_no, cp->device->id,
1630
				    cp->device->lun, resid, scsi_bufflen(cp));
1631

1632 1633 1634 1635
				cp->result = DID_ERROR << 16;
				break;
			}
		} else if (!lscsi_status) {
1636 1637 1638
			DEBUG2(qla_printk(KERN_INFO, ha,
			    "scsi(%ld:%d:%d) Dropped frame(s) detected (0x%x "
			    "of 0x%x bytes).\n", vha->host_no, cp->device->id,
1639 1640 1641 1642
			    cp->device->lun, resid, scsi_bufflen(cp)));

			cp->result = DID_ERROR << 16;
			break;
L
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		}

1645
		cp->result = DID_OK << 16 | lscsi_status;
1646
		logit = 0;
1647

L
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1648
		/*
A
Andrew Vasquez 已提交
1649
		 * Check to see if SCSI Status is non zero. If so report SCSI
L
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		 * Status.
		 */
		if (lscsi_status != 0) {
1653
			if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1654 1655 1656 1657 1658
				DEBUG2(qla_printk(KERN_INFO, ha,
				    "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
				    vha->host_no, cp->device->id,
				    cp->device->lun));
				logit = 1;
1659 1660
				break;
			}
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			if (lscsi_status != SS_CHECK_CONDITION)
				break;

1664
			memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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			if (!(scsi_status & SS_SENSE_LEN_VALID))
				break;

1668
			qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
L
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		}
		break;

	case CS_PORT_LOGGED_OUT:
	case CS_PORT_CONFIG_CHG:
	case CS_PORT_BUSY:
	case CS_INCOMPLETE:
	case CS_PORT_UNAVAILABLE:
1677
	case CS_TIMEOUT:
1678 1679 1680 1681 1682 1683
		/*
		 * We are going to have the fc class block the rport
		 * while we try to recover so instruct the mid layer
		 * to requeue until the class decides how to handle this.
		 */
		cp->result = DID_TRANSPORT_DISRUPTED << 16;
1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697

		if (comp_status == CS_TIMEOUT) {
			if (IS_FWI2_CAPABLE(ha))
				break;
			else if ((le16_to_cpu(sts->status_flags) &
			    SF_LOGOUT_SENT) == 0)
				break;
		}

		DEBUG2(qla_printk(KERN_INFO, ha,
			"scsi(%ld:%d:%d) Port down status: port-state=0x%x\n",
			vha->host_no, cp->device->id, cp->device->lun,
			atomic_read(&fcport->state)));

1698
		if (atomic_read(&fcport->state) == FCS_ONLINE)
1699
			qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
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1700 1701 1702 1703 1704 1705
		break;

	case CS_RESET:
	case CS_ABORTED:
		cp->result = DID_RESET << 16;
		break;
1706 1707 1708 1709

	case CS_DIF_ERROR:
		qla2x00_handle_dif_error(sp, sts24);
		break;
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1710 1711 1712 1713 1714
	default:
		cp->result = DID_ERROR << 16;
		break;
	}

1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725
out:
	if (logit)
		DEBUG2(qla_printk(KERN_INFO, ha,
		    "scsi(%ld:%d:%d) FCP command status: 0x%x-0x%x (0x%x) "
		    "oxid=0x%x ser=0x%lx cdb=%02x%02x%02x len=0x%x "
		    "rsp_info=0x%x resid=0x%x fw_resid=0x%x\n", vha->host_no,
		    cp->device->id, cp->device->lun, comp_status, scsi_status,
		    cp->result, ox_id, cp->serial_number, cp->cmnd[0],
		    cp->cmnd[1], cp->cmnd[2], scsi_bufflen(cp), rsp_info_len,
		    resid_len, fw_resid_len));

1726
	if (rsp->status_srb == NULL)
1727
		qla2x00_sp_compl(ha, sp);
L
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1728 1729 1730 1731 1732 1733 1734 1735 1736 1737
}

/**
 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 *
 * Extended sense data.
 */
static void
1738
qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
L
Linus Torvalds 已提交
1739 1740
{
	uint8_t		sense_sz = 0;
1741 1742
	struct qla_hw_data *ha = rsp->hw;
	srb_t		*sp = rsp->status_srb;
L
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1743 1744 1745 1746 1747 1748
	struct scsi_cmnd *cp;

	if (sp != NULL && sp->request_sense_length != 0) {
		cp = sp->cmd;
		if (cp == NULL) {
			DEBUG2(printk("%s(): Cmd already returned back to OS "
1749
			    "sp=%p.\n", __func__, sp));
L
Linus Torvalds 已提交
1750 1751
			qla_printk(KERN_INFO, ha,
			    "cmd is NULL: already returned to OS (sp=%p)\n",
A
Andrew Vasquez 已提交
1752
			    sp);
L
Linus Torvalds 已提交
1753

1754
			rsp->status_srb = NULL;
L
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1755 1756 1757 1758 1759 1760 1761 1762 1763 1764
			return;
		}

		if (sp->request_sense_length > sizeof(pkt->data)) {
			sense_sz = sizeof(pkt->data);
		} else {
			sense_sz = sp->request_sense_length;
		}

		/* Move sense data. */
1765
		if (IS_FWI2_CAPABLE(ha))
1766
			host_to_fcp_swap(pkt->data, sizeof(pkt->data));
L
Linus Torvalds 已提交
1767 1768 1769 1770 1771 1772 1773 1774
		memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
		DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));

		sp->request_sense_ptr += sense_sz;
		sp->request_sense_length -= sense_sz;

		/* Place command on done queue. */
		if (sp->request_sense_length == 0) {
1775
			rsp->status_srb = NULL;
1776
			qla2x00_sp_compl(ha, sp);
L
Linus Torvalds 已提交
1777 1778 1779 1780 1781 1782 1783 1784 1785 1786
		}
	}
}

/**
 * qla2x00_error_entry() - Process an error entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
1787
qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
L
Linus Torvalds 已提交
1788 1789
{
	srb_t *sp;
1790
	struct qla_hw_data *ha = vha->hw;
1791 1792 1793
	uint32_t handle = LSW(pkt->handle);
	uint16_t que = MSW(pkt->handle);
	struct req_que *req = ha->req_q_map[que];
L
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1794 1795 1796 1797 1798 1799
#if defined(QL_DEBUG_LEVEL_2)
	if (pkt->entry_status & RF_INV_E_ORDER)
		qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
	else if (pkt->entry_status & RF_INV_E_COUNT)
		qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
	else if (pkt->entry_status & RF_INV_E_PARAM)
A
Andrew Vasquez 已提交
1800
		qla_printk(KERN_ERR, ha,
L
Linus Torvalds 已提交
1801 1802 1803 1804 1805 1806 1807 1808 1809 1810
		    "%s: Invalid Entry Parameter\n", __func__);
	else if (pkt->entry_status & RF_INV_E_TYPE)
		qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
	else if (pkt->entry_status & RF_BUSY)
		qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
	else
		qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
#endif

	/* Validate handle. */
1811 1812
	if (handle < MAX_OUTSTANDING_COMMANDS)
		sp = req->outstanding_cmds[handle];
L
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1813 1814 1815 1816 1817
	else
		sp = NULL;

	if (sp) {
		/* Free outstanding command slot. */
1818
		req->outstanding_cmds[handle] = NULL;
1819

L
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1820 1821 1822 1823 1824 1825 1826 1827 1828 1829
		/* Bad payload or header */
		if (pkt->entry_status &
		    (RF_INV_E_ORDER | RF_INV_E_COUNT |
		     RF_INV_E_PARAM | RF_INV_E_TYPE)) {
			sp->cmd->result = DID_ERROR << 16;
		} else if (pkt->entry_status & RF_BUSY) {
			sp->cmd->result = DID_BUS_BUSY << 16;
		} else {
			sp->cmd->result = DID_ERROR << 16;
		}
1830
		qla2x00_sp_compl(ha, sp);
L
Linus Torvalds 已提交
1831

1832 1833
	} else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
	    COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
L
Linus Torvalds 已提交
1834
		DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1835
		    vha->host_no));
L
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1836 1837 1838
		qla_printk(KERN_WARNING, ha,
		    "Error entry - invalid handle\n");

1839 1840
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
		qla2xxx_wake_dpc(vha);
L
Linus Torvalds 已提交
1841 1842 1843
	}
}

1844 1845 1846 1847 1848 1849
/**
 * qla24xx_mbx_completion() - Process mailbox command completions.
 * @ha: SCSI driver HA context
 * @mb0: Mailbox0 register
 */
static void
1850
qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1851 1852 1853
{
	uint16_t	cnt;
	uint16_t __iomem *wptr;
1854
	struct qla_hw_data *ha = vha->hw;
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868
	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

	/* Load return mailbox registers. */
	ha->flags.mbox_int = 1;
	ha->mailbox_out[0] = mb0;
	wptr = (uint16_t __iomem *)&reg->mailbox1;

	for (cnt = 1; cnt < ha->mbx_count; cnt++) {
		ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
		wptr++;
	}

	if (ha->mcp) {
		DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1869
		    __func__, vha->host_no, ha->mcp->mb[0]));
1870 1871
	} else {
		DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1872
		    __func__, vha->host_no));
1873 1874 1875 1876 1877 1878 1879
	}
}

/**
 * qla24xx_process_response_queue() - Process response queue entries.
 * @ha: SCSI driver HA context
 */
1880 1881
void qla24xx_process_response_queue(struct scsi_qla_host *vha,
	struct rsp_que *rsp)
1882 1883
{
	struct sts_entry_24xx *pkt;
1884
	struct qla_hw_data *ha = vha->hw;
1885

1886
	if (!vha->flags.online)
1887 1888
		return;

1889 1890
	while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
		pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1891

1892 1893 1894 1895
		rsp->ring_index++;
		if (rsp->ring_index == rsp->length) {
			rsp->ring_index = 0;
			rsp->ring_ptr = rsp->ring;
1896
		} else {
1897
			rsp->ring_ptr++;
1898 1899 1900 1901
		}

		if (pkt->entry_status != 0) {
			DEBUG3(printk(KERN_INFO
1902
			    "scsi(%ld): Process error entry.\n", vha->host_no));
1903

1904
			qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1905 1906 1907 1908 1909 1910 1911
			((response_t *)pkt)->signature = RESPONSE_PROCESSED;
			wmb();
			continue;
		}

		switch (pkt->entry_type) {
		case STATUS_TYPE:
1912
			qla2x00_status_entry(vha, rsp, pkt);
1913 1914
			break;
		case STATUS_CONT_TYPE:
1915
			qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1916
			break;
1917
		case VP_RPT_ID_IOCB_TYPE:
1918
			qla24xx_report_id_acquisition(vha,
1919 1920
			    (struct vp_rpt_id_entry_24xx *)pkt);
			break;
1921 1922 1923 1924
		case LOGINOUT_PORT_IOCB_TYPE:
			qla24xx_logio_entry(vha, rsp->req,
			    (struct logio_entry_24xx *)pkt);
			break;
1925 1926 1927 1928 1929 1930 1931 1932
		case TSK_MGMT_IOCB_TYPE:
			qla24xx_tm_iocb_entry(vha, rsp->req,
			    (struct tsk_mgmt_entry *)pkt);
			break;
		case MARKER_TYPE:
			qla24xx_marker_iocb_entry(vha, rsp->req,
			    (struct mrk_entry_24xx *)pkt);
			break;
1933 1934 1935 1936 1937 1938 1939
                case CT_IOCB_TYPE:
			qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
			clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
			break;
                case ELS_IOCB_TYPE:
			qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
			break;
1940 1941 1942 1943 1944
		default:
			/* Type Not Supported. */
			DEBUG4(printk(KERN_WARNING
			    "scsi(%ld): Received unknown response pkt type %x "
			    "entry status=%x.\n",
1945
			    vha->host_no, pkt->entry_type, pkt->entry_status));
1946 1947 1948 1949 1950 1951 1952
			break;
		}
		((response_t *)pkt)->signature = RESPONSE_PROCESSED;
		wmb();
	}

	/* Adjust ring index */
1953 1954 1955 1956 1957
	if (IS_QLA82XX(ha)) {
		struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
		WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
	} else
		WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1958 1959
}

1960
static void
1961
qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1962 1963 1964
{
	int rval;
	uint32_t cnt;
1965
	struct qla_hw_data *ha = vha->hw;
1966 1967
	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

1968
	if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
		return;

	rval = QLA_SUCCESS;
	WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
	RD_REG_DWORD(&reg->iobase_addr);
	WRT_REG_DWORD(&reg->iobase_window, 0x0001);
	for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
	    rval == QLA_SUCCESS; cnt--) {
		if (cnt) {
			WRT_REG_DWORD(&reg->iobase_window, 0x0001);
			udelay(10);
		} else
			rval = QLA_FUNCTION_TIMEOUT;
	}
	if (rval == QLA_SUCCESS)
		goto next_test;

	WRT_REG_DWORD(&reg->iobase_window, 0x0003);
	for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
	    rval == QLA_SUCCESS; cnt--) {
		if (cnt) {
			WRT_REG_DWORD(&reg->iobase_window, 0x0003);
			udelay(10);
		} else
			rval = QLA_FUNCTION_TIMEOUT;
	}
	if (rval != QLA_SUCCESS)
		goto done;

next_test:
	if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
		qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");

done:
	WRT_REG_DWORD(&reg->iobase_window, 0x0000);
	RD_REG_DWORD(&reg->iobase_window);
}

2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
/**
 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 * @irq:
 * @dev_id: SCSI driver HA context
 *
 * Called by system whenever the host adapter generates an interrupt.
 *
 * Returns handled flag.
 */
irqreturn_t
2017
qla24xx_intr_handler(int irq, void *dev_id)
2018
{
2019 2020
	scsi_qla_host_t	*vha;
	struct qla_hw_data *ha;
2021 2022 2023 2024 2025 2026
	struct device_reg_24xx __iomem *reg;
	int		status;
	unsigned long	iter;
	uint32_t	stat;
	uint32_t	hccr;
	uint16_t	mb[4];
2027
	struct rsp_que *rsp;
2028
	unsigned long	flags;
2029

2030 2031
	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
2032
		printk(KERN_INFO
2033
		    "%s(): NULL response queue pointer\n", __func__);
2034 2035 2036
		return IRQ_NONE;
	}

2037
	ha = rsp->hw;
2038 2039 2040
	reg = &ha->iobase->isp24;
	status = 0;

2041 2042 2043
	if (unlikely(pci_channel_offline(ha->pdev)))
		return IRQ_HANDLED;

2044
	spin_lock_irqsave(&ha->hardware_lock, flags);
2045
	vha = pci_get_drvdata(ha->pdev);
2046 2047 2048
	for (iter = 50; iter--; ) {
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
2049
			if (unlikely(pci_channel_offline(ha->pdev)))
2050 2051
				break;

2052 2053 2054 2055
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
2056

2057
			qla2xxx_check_risc_status(vha);
2058

2059 2060
			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2061 2062 2063 2064 2065 2066 2067 2068 2069
			break;
		} else if ((stat & HSRX_RISC_INT) == 0)
			break;

		switch (stat & 0xff) {
		case 0x1:
		case 0x2:
		case 0x10:
		case 0x11:
2070
			qla24xx_mbx_completion(vha, MSW(stat));
2071 2072 2073 2074 2075 2076 2077 2078
			status |= MBX_INTERRUPT;

			break;
		case 0x12:
			mb[0] = MSW(stat);
			mb[1] = RD_REG_WORD(&reg->mailbox1);
			mb[2] = RD_REG_WORD(&reg->mailbox2);
			mb[3] = RD_REG_WORD(&reg->mailbox3);
2079
			qla2x00_async_event(vha, rsp, mb);
2080 2081
			break;
		case 0x13:
2082
		case 0x14:
2083
			qla24xx_process_response_queue(vha, rsp);
2084 2085 2086 2087
			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
			    "(%d).\n",
2088
			    vha->host_no, stat & 0xff));
2089 2090 2091 2092 2093
			break;
		}
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
		RD_REG_DWORD_RELAXED(&reg->hccr);
	}
2094
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
2095 2096 2097 2098

	if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
	    (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
		set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2099
		complete(&ha->mbx_intr_comp);
2100 2101 2102 2103 2104
	}

	return IRQ_HANDLED;
}

2105 2106 2107
static irqreturn_t
qla24xx_msix_rsp_q(int irq, void *dev_id)
{
2108 2109
	struct qla_hw_data *ha;
	struct rsp_que *rsp;
2110
	struct device_reg_24xx __iomem *reg;
2111
	struct scsi_qla_host *vha;
2112
	unsigned long flags;
2113

2114 2115 2116 2117 2118 2119 2120
	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
		printk(KERN_INFO
		"%s(): NULL response queue pointer\n", __func__);
		return IRQ_NONE;
	}
	ha = rsp->hw;
2121 2122
	reg = &ha->iobase->isp24;

2123
	spin_lock_irqsave(&ha->hardware_lock, flags);
2124

2125
	vha = pci_get_drvdata(ha->pdev);
2126
	qla24xx_process_response_queue(vha, rsp);
2127
	if (!ha->flags.disable_msix_handshake) {
2128 2129 2130
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
		RD_REG_DWORD_RELAXED(&reg->hccr);
	}
2131
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
2132 2133 2134 2135

	return IRQ_HANDLED;
}

2136 2137 2138 2139 2140
static irqreturn_t
qla25xx_msix_rsp_q(int irq, void *dev_id)
{
	struct qla_hw_data *ha;
	struct rsp_que *rsp;
2141
	struct device_reg_24xx __iomem *reg;
2142
	unsigned long flags;
2143 2144 2145 2146 2147 2148 2149 2150 2151

	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
		printk(KERN_INFO
			"%s(): NULL response queue pointer\n", __func__);
		return IRQ_NONE;
	}
	ha = rsp->hw;

2152 2153 2154
	/* Clear the interrupt, if enabled, for this response queue */
	if (rsp->options & ~BIT_6) {
		reg = &ha->iobase->isp24;
2155
		spin_lock_irqsave(&ha->hardware_lock, flags);
2156 2157
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
		RD_REG_DWORD_RELAXED(&reg->hccr);
2158
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
2159
	}
2160 2161 2162 2163 2164
	queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);

	return IRQ_HANDLED;
}

2165 2166 2167
static irqreturn_t
qla24xx_msix_default(int irq, void *dev_id)
{
2168 2169 2170
	scsi_qla_host_t	*vha;
	struct qla_hw_data *ha;
	struct rsp_que *rsp;
2171 2172 2173 2174 2175
	struct device_reg_24xx __iomem *reg;
	int		status;
	uint32_t	stat;
	uint32_t	hccr;
	uint16_t	mb[4];
2176
	unsigned long flags;
2177

2178 2179 2180 2181 2182 2183 2184
	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
		DEBUG(printk(
		"%s(): NULL response queue pointer\n", __func__));
		return IRQ_NONE;
	}
	ha = rsp->hw;
2185 2186 2187
	reg = &ha->iobase->isp24;
	status = 0;

2188
	spin_lock_irqsave(&ha->hardware_lock, flags);
2189
	vha = pci_get_drvdata(ha->pdev);
2190
	do {
2191 2192
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
2193
			if (unlikely(pci_channel_offline(ha->pdev)))
2194 2195
				break;

2196 2197 2198 2199
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
2200

2201
			qla2xxx_check_risc_status(vha);
2202

2203 2204
			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2205 2206 2207 2208 2209 2210 2211 2212 2213
			break;
		} else if ((stat & HSRX_RISC_INT) == 0)
			break;

		switch (stat & 0xff) {
		case 0x1:
		case 0x2:
		case 0x10:
		case 0x11:
2214
			qla24xx_mbx_completion(vha, MSW(stat));
2215 2216 2217 2218 2219 2220 2221 2222
			status |= MBX_INTERRUPT;

			break;
		case 0x12:
			mb[0] = MSW(stat);
			mb[1] = RD_REG_WORD(&reg->mailbox1);
			mb[2] = RD_REG_WORD(&reg->mailbox2);
			mb[3] = RD_REG_WORD(&reg->mailbox3);
2223
			qla2x00_async_event(vha, rsp, mb);
2224 2225
			break;
		case 0x13:
2226
		case 0x14:
2227
			qla24xx_process_response_queue(vha, rsp);
2228 2229 2230 2231
			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
			    "(%d).\n",
2232
			    vha->host_no, stat & 0xff));
2233 2234 2235
			break;
		}
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2236
	} while (0);
2237
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
2238 2239 2240 2241

	if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
	    (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
		set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2242
		complete(&ha->mbx_intr_comp);
2243 2244 2245 2246 2247 2248 2249 2250
	}
	return IRQ_HANDLED;
}

/* Interrupt handling helpers. */

struct qla_init_msix_entry {
	const char *name;
2251
	irq_handler_t handler;
2252 2253
};

2254
static struct qla_init_msix_entry msix_entries[3] = {
2255 2256
	{ "qla2xxx (default)", qla24xx_msix_default },
	{ "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2257
	{ "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2258 2259
};

2260 2261 2262 2263 2264
static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
	{ "qla2xxx (default)", qla82xx_msix_default },
	{ "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
};

2265
static void
2266
qla24xx_disable_msix(struct qla_hw_data *ha)
2267 2268 2269 2270
{
	int i;
	struct qla_msix_entry *qentry;

2271 2272
	for (i = 0; i < ha->msix_count; i++) {
		qentry = &ha->msix_entries[i];
2273
		if (qentry->have_irq)
2274
			free_irq(qentry->vector, qentry->rsp);
2275 2276
	}
	pci_disable_msix(ha->pdev);
2277 2278 2279
	kfree(ha->msix_entries);
	ha->msix_entries = NULL;
	ha->flags.msix_enabled = 0;
2280 2281 2282
}

static int
2283
qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2284
{
2285
#define MIN_MSIX_COUNT	2
2286
	int i, ret;
2287
	struct msix_entry *entries;
2288
	struct qla_msix_entry *qentry;
2289 2290

	entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2291
			GFP_KERNEL);
2292 2293
	if (!entries)
		return -ENOMEM;
2294

2295 2296
	for (i = 0; i < ha->msix_count; i++)
		entries[i].entry = i;
2297

2298
	ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2299
	if (ret) {
2300 2301 2302
		if (ret < MIN_MSIX_COUNT)
			goto msix_failed;

2303
		qla_printk(KERN_WARNING, ha,
2304 2305 2306 2307 2308
			"MSI-X: Failed to enable support -- %d/%d\n"
			" Retry with %d vectors\n", ha->msix_count, ret, ret);
		ha->msix_count = ret;
		ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
		if (ret) {
2309
msix_failed:
2310 2311 2312 2313 2314
			qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
				" support, giving up -- %d/%d\n",
				ha->msix_count, ret);
			goto msix_out;
		}
2315
		ha->max_rsp_queues = ha->msix_count - 1;
2316 2317 2318 2319 2320
	}
	ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
				ha->msix_count, GFP_KERNEL);
	if (!ha->msix_entries) {
		ret = -ENOMEM;
2321 2322 2323 2324
		goto msix_out;
	}
	ha->flags.msix_enabled = 1;

2325 2326 2327 2328
	for (i = 0; i < ha->msix_count; i++) {
		qentry = &ha->msix_entries[i];
		qentry->vector = entries[i].vector;
		qentry->entry = entries[i].entry;
2329
		qentry->have_irq = 0;
2330
		qentry->rsp = NULL;
2331 2332
	}

2333 2334 2335
	/* Enable MSI-X vectors for the base queue */
	for (i = 0; i < 2; i++) {
		qentry = &ha->msix_entries[i];
2336 2337 2338 2339 2340 2341 2342 2343 2344
		if (IS_QLA82XX(ha)) {
			ret = request_irq(qentry->vector,
				qla82xx_msix_entries[i].handler,
				0, qla82xx_msix_entries[i].name, rsp);
		} else {
			ret = request_irq(qentry->vector,
				msix_entries[i].handler,
				0, msix_entries[i].name, rsp);
		}
2345 2346
		if (ret) {
			qla_printk(KERN_WARNING, ha,
2347 2348
			"MSI-X: Unable to register handler -- %x/%d.\n",
			qentry->vector, ret);
2349 2350 2351 2352 2353 2354 2355
			qla24xx_disable_msix(ha);
			ha->mqenable = 0;
			goto msix_out;
		}
		qentry->have_irq = 1;
		qentry->rsp = rsp;
		rsp->msix = qentry;
2356 2357 2358
	}

	/* Enable MSI-X vector for response queue update for queue 0 */
2359
	if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2360 2361
		ha->mqenable = 1;

2362
msix_out:
2363
	kfree(entries);
2364 2365 2366 2367
	return ret;
}

int
2368
qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2369 2370
{
	int ret;
2371
	device_reg_t __iomem *reg = ha->iobase;
2372 2373

	/* If possible, enable MSI-X. */
2374
	if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2375
		!IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387
		goto skip_msi;

	if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
		(ha->pdev->subsystem_device == 0x7040 ||
		ha->pdev->subsystem_device == 0x7041 ||
		ha->pdev->subsystem_device == 0x1705)) {
		DEBUG2(qla_printk(KERN_WARNING, ha,
			"MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
			ha->pdev->subsystem_vendor,
			ha->pdev->subsystem_device));
		goto skip_msi;
	}
2388

2389 2390
	if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
		!QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2391
		DEBUG2(qla_printk(KERN_WARNING, ha,
2392 2393
		"MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
			ha->pdev->revision, ha->fw_attributes));
2394 2395 2396
		goto skip_msix;
	}

2397
	ret = qla24xx_enable_msix(ha, rsp);
2398 2399 2400 2401
	if (!ret) {
		DEBUG2(qla_printk(KERN_INFO, ha,
		    "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
		    ha->fw_attributes));
2402
		goto clear_risc_ints;
2403 2404
	}
	qla_printk(KERN_WARNING, ha,
2405
	    "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
2406
skip_msix:
2407

2408 2409
	if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
	    !IS_QLA8001(ha))
2410 2411 2412 2413 2414 2415
		goto skip_msi;

	ret = pci_enable_msi(ha->pdev);
	if (!ret) {
		DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
		ha->flags.msi_enabled = 1;
2416 2417 2418
	} else
		qla_printk(KERN_WARNING, ha,
		    "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2419 2420
skip_msi:

2421
	ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2422
	    IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2423
	if (ret) {
2424 2425 2426
		qla_printk(KERN_WARNING, ha,
		    "Failed to reserve interrupt %d already in use.\n",
		    ha->pdev->irq);
2427 2428 2429 2430 2431
		goto fail;
	}
	ha->flags.inta_enabled = 1;
clear_risc_ints:

2432 2433 2434 2435
	/*
	 * FIXME: Noted that 8014s were being dropped during NK testing.
	 * Timing deltas during MSI-X/INTa transitions?
	 */
2436
	if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2437
		goto fail;
2438
	spin_lock_irq(&ha->hardware_lock);
2439 2440 2441 2442 2443 2444 2445
	if (IS_FWI2_CAPABLE(ha)) {
		WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
		WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
	} else {
		WRT_REG_WORD(&reg->isp.semaphore, 0);
		WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
		WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2446
	}
2447
	spin_unlock_irq(&ha->hardware_lock);
2448

2449
fail:
2450 2451 2452 2453
	return ret;
}

void
2454
qla2x00_free_irqs(scsi_qla_host_t *vha)
2455
{
2456
	struct qla_hw_data *ha = vha->hw;
2457
	struct rsp_que *rsp = ha->rsp_q_map[0];
2458 2459 2460

	if (ha->flags.msix_enabled)
		qla24xx_disable_msix(ha);
2461
	else if (ha->flags.msi_enabled) {
2462
		free_irq(ha->pdev->irq, rsp);
2463
		pci_disable_msi(ha->pdev);
2464 2465
	} else
		free_irq(ha->pdev->irq, rsp);
2466
}
2467

2468 2469 2470 2471

int qla25xx_request_irq(struct rsp_que *rsp)
{
	struct qla_hw_data *ha = rsp->hw;
2472
	struct qla_init_msix_entry *intr = &msix_entries[2];
2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486
	struct qla_msix_entry *msix = rsp->msix;
	int ret;

	ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
	if (ret) {
		qla_printk(KERN_WARNING, ha,
			"MSI-X: Unable to register handler -- %x/%d.\n",
			msix->vector, ret);
		return ret;
	}
	msix->have_irq = 1;
	msix->rsp = rsp;
	return ret;
}