qla_isr.c 48.6 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 <scsi/scsi_tcq.h>

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static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
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static void qla2x00_status_entry(scsi_qla_host_t *, void *);
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static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
static void qla2x00_error_entry(scsi_qla_host_t *, 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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{
	scsi_qla_host_t	*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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	ha = (scsi_qla_host_t *) dev_id;
	if (!ha) {
		printk(KERN_INFO
		    "%s(): NULL host pointer\n", __func__);
		return (IRQ_NONE);
	}

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

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	spin_lock(&ha->hardware_lock);
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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);

			ha->isp_ops->fw_dump(ha, 1);
			set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
			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) {
				qla2x00_mbx_completion(ha, 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);
				qla2x00_async_event(ha, mb);
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			} else {
				/*EMPTY*/
				DEBUG2(printk("scsi(%ld): Unrecognized "
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				    "interrupt type (%d).\n",
				    ha->host_no, mb[0]));
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			}
			/* Release mailbox registers. */
			WRT_REG_WORD(&reg->semaphore, 0);
			RD_REG_WORD(&reg->semaphore);
		} else {
			qla2x00_process_response_queue(ha);

			WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
			RD_REG_WORD(&reg->hccr);
		}
	}
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	spin_unlock(&ha->hardware_lock);
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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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{
	scsi_qla_host_t	*ha;
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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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	ha = (scsi_qla_host_t *) dev_id;
	if (!ha) {
		printk(KERN_INFO
		    "%s(): NULL host pointer\n", __func__);
		return (IRQ_NONE);
	}

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

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	spin_lock(&ha->hardware_lock);
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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 (pci_channel_offline(ha->pdev))
				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(ha, 1);
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			set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
			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(ha, 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);
			qla2x00_async_event(ha, mb);
			break;
		case 0x13:
			qla2x00_process_response_queue(ha);
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			break;
		case 0x15:
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			mb[0] = MBA_CMPLT_1_16BIT;
			mb[1] = MSW(stat);
			qla2x00_async_event(ha, 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);
			qla2x00_async_event(ha, mb);
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			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
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			    "(%d).\n",
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			    ha->host_no, stat & 0xff));
			break;
		}
		WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
		RD_REG_WORD_RELAXED(&reg->hccr);
	}
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	spin_unlock(&ha->hardware_lock);
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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
qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
{
	uint16_t	cnt;
	uint16_t __iomem *wptr;
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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",
		    __func__, ha->host_no, ha->mcp->mb[0]));
	} else {
		DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
		    __func__, ha->host_no));
	}
}

/**
 * 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 *ha, uint16_t *mb)
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{
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#define LS_UNKNOWN	2
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	static char	*link_speeds[5] = { "1", "2", "?", "4", "8" };
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	char		*link_speed;
	uint16_t	handle_cnt;
	uint16_t	cnt;
	uint32_t	handles[5];
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	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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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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	scsi_qla_host_t	*vha;
	int		i;
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	/* Setup to process RIO completion. */
	handle_cnt = 0;
	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;
	}

	switch (mb[0]) {
	case MBA_SCSI_COMPLETION:	/* Fast Post */
		if (!ha->flags.online)
			break;

		for (cnt = 0; cnt < handle_cnt; cnt++)
			qla2x00_process_completed_request(ha, handles[cnt]);
		break;

	case MBA_RESET:			/* Reset */
		DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));

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

	case MBA_SYSTEM_ERR:		/* System Error */
		qla_printk(KERN_INFO, ha,
		    "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
		    mb[1], mb[2], mb[3]);

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		qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]);
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		ha->isp_ops->fw_dump(ha, 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");
				ha->flags.online = 0;
			} else
				set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
		} else if (mb[1] == 0) {
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			qla_printk(KERN_INFO, ha,
			    "Unrecoverable Hardware Error: adapter marked "
			    "OFFLINE!\n");
			ha->flags.online = 0;
		} else
			set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
		break;

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

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		qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]);
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		set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
		break;

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

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		qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]);
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		set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
		break;

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

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

		if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
			atomic_set(&ha->loop_state, LOOP_DOWN);
			atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
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			qla2x00_mark_all_devices_lost(ha, 1);
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		}

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

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		set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
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		set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
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		ha->flags.management_server_logged_in = 0;
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		qla2x00_post_aen_work(ha, 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];
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			ha->link_data_rate = PORT_SPEED_1GB;
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		} else {
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			link_speed = link_speeds[LS_UNKNOWN];
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			if (mb[1] < 5)
				link_speed = link_speeds[mb[1]];
			ha->link_data_rate = mb[1];
		}

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

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

	case MBA_LOOP_DOWN:		/* Loop Down Event */
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		DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
		    "(%x %x %x).\n", ha->host_no, mb[1], mb[2], mb[3]));
		qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
		    mb[1], mb[2], mb[3]);
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		if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
			atomic_set(&ha->loop_state, LOOP_DOWN);
			atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
			ha->device_flags |= DFLG_NO_CABLE;
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			qla2x00_mark_all_devices_lost(ha, 1);
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		}

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

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		ha->flags.management_server_logged_in = 0;
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		ha->link_data_rate = PORT_SPEED_UNKNOWN;
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		qla2x00_post_aen_work(ha, 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",
		    ha->host_no, mb[1]));
		qla_printk(KERN_INFO, ha,
		    "LIP reset occured (%x).\n", mb[1]);

		if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
			atomic_set(&ha->loop_state, LOOP_DOWN);
			atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
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			qla2x00_mark_all_devices_lost(ha, 1);
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		}

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

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		set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);

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

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

		DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
		    ha->host_no));

		/*
		 * Until there's a transition from loop down to loop up, treat
		 * this as loop down only.
		 */
		if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
			atomic_set(&ha->loop_state, LOOP_DOWN);
			if (!atomic_read(&ha->loop_down_timer))
				atomic_set(&ha->loop_down_timer,
				    LOOP_DOWN_TIME);
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			qla2x00_mark_all_devices_lost(ha, 1);
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		}

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

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		if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
			set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
		}
		set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
513
		set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
514 515

		ha->flags.gpsc_supported = 1;
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		ha->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",
		    ha->host_no));
		qla_printk(KERN_INFO, ha,
		    "Configuration change detected: value=%x.\n", mb[1]);

		if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
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			atomic_set(&ha->loop_state, LOOP_DOWN);
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			if (!atomic_read(&ha->loop_down_timer))
				atomic_set(&ha->loop_down_timer,
				    LOOP_DOWN_TIME);
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			qla2x00_mark_all_devices_lost(ha, 1);
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		}

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

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

	case MBA_PORT_UPDATE:		/* Port database update */
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		if ((ha->flags.npiv_supported) && (ha->num_vhosts)) {
			for_each_mapped_vp_idx(ha, i) {
				list_for_each_entry(vha, &ha->vp_list,
				    vp_list) {
					if ((mb[3] & 0xff)
					    == vha->vp_idx) {
						ha = vha;
						break;
					}
				}
			}
		}
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		/*
		 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
		 * event etc. earlier indicating loop is down) then process
		 * it.  Otherwise ignore it and Wait for RSCN to come in.
		 */
		atomic_set(&ha->loop_down_timer, 0);
		if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
		    atomic_read(&ha->loop_state) != LOOP_DEAD) {
			DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
568 569
			    "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
			    mb[2], mb[3]));
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			break;
		}

		DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
		    ha->host_no));
		DEBUG(printk(KERN_INFO
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		    "scsi(%ld): Port database changed %04x %04x %04x.\n",
		    ha->host_no, mb[1], mb[2], mb[3]));
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		/*
		 * Mark all devices as missing so we will login again.
		 */
		atomic_set(&ha->loop_state, LOOP_UP);

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		qla2x00_mark_all_devices_lost(ha, 1);
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		ha->flags.rscn_queue_overflow = 1;

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

	case MBA_RSCN_UPDATE:		/* State Change Registration */
593 594 595 596 597 598 599 600 601 602 603 604
		if ((ha->flags.npiv_supported) && (ha->num_vhosts)) {
			for_each_mapped_vp_idx(ha, i) {
				list_for_each_entry(vha, &ha->vp_list,
				    vp_list) {
					if ((mb[3] & 0xff)
					    == vha->vp_idx) {
						ha = vha;
						break;
					}
				}
			}
		}
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		DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
		    ha->host_no));
		DEBUG(printk(KERN_INFO
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		    "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
		    ha->host_no, mb[1], mb[2], mb[3]));
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		rscn_entry = (mb[1] << 16) | mb[2];
		host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
		    ha->d_id.b.al_pa;
		if (rscn_entry == host_pid) {
			DEBUG(printk(KERN_INFO
			    "scsi(%ld): Ignoring RSCN update to local host "
			    "port ID (%06x)\n",
			    ha->host_no, host_pid));
			break;
		}

		rscn_queue_index = ha->rscn_in_ptr + 1;
		if (rscn_queue_index == MAX_RSCN_COUNT)
			rscn_queue_index = 0;
		if (rscn_queue_index != ha->rscn_out_ptr) {
			ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
			ha->rscn_in_ptr = rscn_queue_index;
		} else {
			ha->flags.rscn_queue_overflow = 1;
		}

		atomic_set(&ha->loop_state, LOOP_UPDATE);
		atomic_set(&ha->loop_down_timer, 0);
		ha->flags.management_server_logged_in = 0;

		set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
		set_bit(RSCN_UPDATE, &ha->dpc_flags);
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		qla2x00_post_aen_work(ha, FCH_EVT_RSCN, rscn_entry);
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		break;

	/* case MBA_RIO_RESPONSE: */
	case MBA_ZIO_RESPONSE:
		DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
		    ha->host_no));
		DEBUG(printk(KERN_INFO
		    "scsi(%ld): [R|Z]IO update completion.\n",
		    ha->host_no));

650
		if (IS_FWI2_CAPABLE(ha))
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			qla24xx_process_response_queue(ha);
		else
			qla2x00_process_response_queue(ha);
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		break;
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	case MBA_DISCARD_RND_FRAME:
		DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
		    "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
		break;
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	case MBA_TRACE_NOTIFICATION:
		DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
		ha->host_no, mb[1], mb[2]));
		break;
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	case MBA_ISP84XX_ALERT:
		DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
		    "%04x %04x %04x\n", ha->host_no, mb[1], mb[2], mb[3]));

		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;
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	}
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	if (!ha->parent && ha->num_vhosts)
		qla2x00_alert_all_vps(ha, mb);
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}

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static void
qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
{
	fc_port_t *fcport = data;

	if (fcport->ha->max_q_depth <= sdev->queue_depth)
		return;

	if (sdev->ordered_tags)
		scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
		    sdev->queue_depth + 1);
	else
		scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
		    sdev->queue_depth + 1);

	fcport->last_ramp_up = jiffies;

	DEBUG2(qla_printk(KERN_INFO, fcport->ha,
	    "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
	    fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
	    sdev->queue_depth));
}

static void
qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
{
	fc_port_t *fcport = data;

	if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
		return;

	DEBUG2(qla_printk(KERN_INFO, fcport->ha,
	    "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
	    fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
	    sdev->queue_depth));
}

static inline void
qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp)
{
	fc_port_t *fcport;
	struct scsi_device *sdev;

	sdev = sp->cmd->device;
	if (sdev->queue_depth >= ha->max_q_depth)
		return;

	fcport = sp->fcport;
	if (time_before(jiffies,
	    fcport->last_ramp_up + ql2xqfullrampup * HZ))
		return;
	if (time_before(jiffies,
	    fcport->last_queue_full + ql2xqfullrampup * HZ))
		return;

	starget_for_each_device(sdev->sdev_target, fcport,
	    qla2x00_adjust_sdev_qdepth_up);
}

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/**
 * qla2x00_process_completed_request() - Process a Fast Post response.
 * @ha: SCSI driver HA context
 * @index: SRB index
 */
static void
qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
{
	srb_t *sp;

	/* Validate handle. */
	if (index >= MAX_OUTSTANDING_COMMANDS) {
		DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
		    ha->host_no, index));
		qla_printk(KERN_WARNING, ha,
		    "Invalid SCSI completion handle %d.\n", index);

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

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

		CMD_COMPL_STATUS(sp->cmd) = 0L;
		CMD_SCSI_STATUS(sp->cmd) = 0L;

		/* Save ISP completion status */
		sp->cmd->result = DID_OK << 16;
797 798

		qla2x00_ramp_up_queue_depth(ha, sp);
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		qla2x00_sp_compl(ha, sp);
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	} else {
		DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
		    ha->host_no));
		qla_printk(KERN_WARNING, ha,
		    "Invalid ISP SCSI completion handle\n");

		set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
	}
}

/**
 * qla2x00_process_response_queue() - Process response queue entries.
 * @ha: SCSI driver HA context
 */
void
qla2x00_process_response_queue(struct scsi_qla_host *ha)
{
817
	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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	sts_entry_t	*pkt;
	uint16_t        handle_cnt;
	uint16_t        cnt;

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

	while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
		pkt = (sts_entry_t *)ha->response_ring_ptr;

		ha->rsp_ring_index++;
		if (ha->rsp_ring_index == ha->response_q_length) {
			ha->rsp_ring_index = 0;
			ha->response_ring_ptr = ha->response_ring;
		} else {
			ha->response_ring_ptr++;
		}

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

			qla2x00_error_entry(ha, pkt);
			((response_t *)pkt)->signature = RESPONSE_PROCESSED;
			wmb();
			continue;
		}

		switch (pkt->entry_type) {
		case STATUS_TYPE:
			qla2x00_status_entry(ha, pkt);
			break;
		case STATUS_TYPE_21:
			handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
			for (cnt = 0; cnt < handle_cnt; cnt++) {
				qla2x00_process_completed_request(ha,
				    ((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++) {
				qla2x00_process_completed_request(ha,
				    ((sts22_entry_t *)pkt)->handle[cnt]);
			}
			break;
		case STATUS_CONT_TYPE:
			qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
			break;
		default:
			/* Type Not Supported. */
			DEBUG4(printk(KERN_WARNING
			    "scsi(%ld): Received unknown response pkt type %x "
			    "entry status=%x.\n",
			    ha->host_no, pkt->entry_type, pkt->entry_status));
			break;
		}
		((response_t *)pkt)->signature = RESPONSE_PROCESSED;
		wmb();
	}

	/* Adjust ring index */
	WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
}

883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
static inline void
qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
{
	struct scsi_cmnd *cp = sp->cmd;

	if (sense_len >= SCSI_SENSE_BUFFERSIZE)
		sense_len = SCSI_SENSE_BUFFERSIZE;

	CMD_ACTUAL_SNSLEN(cp) = sense_len;
	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)
		sp->ha->status_srb = sp;

	DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
	    "cmd=%p pid=%ld\n", __func__, sp->ha->host_no, cp->device->channel,
	    cp->device->id, cp->device->lun, cp, cp->serial_number));
	if (sense_len)
		DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
		    CMD_ACTUAL_SNSLEN(cp)));
}

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/**
 * qla2x00_status_entry() - Process a Status IOCB entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
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qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
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{
	srb_t		*sp;
	fc_port_t	*fcport;
	struct scsi_cmnd *cp;
923 924
	sts_entry_t *sts;
	struct sts_entry_24xx *sts24;
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	uint16_t	comp_status;
	uint16_t	scsi_status;
	uint8_t		lscsi_status;
	int32_t		resid;
929
	uint32_t	sense_len, rsp_info_len, resid_len, fw_resid_len;
930 931 932 933
	uint8_t		*rsp_info, *sense_data;

	sts = (sts_entry_t *) pkt;
	sts24 = (struct sts_entry_24xx *) pkt;
934
	if (IS_FWI2_CAPABLE(ha)) {
935 936 937 938 939 940
		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;
	}
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	/* Fast path completion. */
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	if (comp_status == CS_COMPLETE && scsi_status == 0) {
		qla2x00_process_completed_request(ha, sts->handle);
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		return;
	}

	/* Validate handle. */
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	if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
		sp = ha->outstanding_cmds[sts->handle];
		ha->outstanding_cmds[sts->handle] = NULL;
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	} else
		sp = NULL;

	if (sp == NULL) {
		DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
		    ha->host_no));
		qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");

		set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
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		qla2xxx_wake_dpc(ha);
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		return;
	}
	cp = sp->cmd;
	if (cp == NULL) {
		DEBUG2(printk("scsi(%ld): Command already returned back to OS "
968
		    "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
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		qla_printk(KERN_WARNING, ha,
		    "Command is NULL: already returned to OS (sp=%p)\n", sp);

		return;
	}

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  	lscsi_status = scsi_status & STATUS_MASK;
	CMD_ENTRY_STATUS(cp) = sts->entry_status;
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	CMD_COMPL_STATUS(cp) = comp_status;
	CMD_SCSI_STATUS(cp) = scsi_status;

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	fcport = sp->fcport;
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982
	sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
983
	if (IS_FWI2_CAPABLE(ha)) {
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		sense_len = le32_to_cpu(sts24->sense_len);
		rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
		resid_len = le32_to_cpu(sts24->rsp_residual_count);
987
		fw_resid_len = le32_to_cpu(sts24->residual_len);
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		rsp_info = sts24->data;
		sense_data = sts24->data;
		host_to_fcp_swap(sts24->data, sizeof(sts24->data));
	} else {
		sense_len = le16_to_cpu(sts->req_sense_length);
		rsp_info_len = le16_to_cpu(sts->rsp_info_len);
		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) {
1001
		/* Sense data lies beyond any FCP RESPONSE data. */
1002
		if (IS_FWI2_CAPABLE(ha))
1003 1004
			sense_data += rsp_info_len;
		if (rsp_info_len > 3 && rsp_info[3]) {
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			DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
			    "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1007 1008 1009 1010 1011
			    "retrying command\n", ha->host_no,
			    cp->device->channel, cp->device->id,
			    cp->device->lun, rsp_info_len, rsp_info[0],
			    rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
			    rsp_info[5], rsp_info[6], rsp_info[7]));
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			cp->result = DID_BUS_BUSY << 16;
已提交
1014
			qla2x00_sp_compl(ha, sp);
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			return;
		}
	}

1019 1020 1021 1022 1023
	/* 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:
1029
	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)) {
1035
			resid = resid_len;
1036
			scsi_set_resid(cp, resid);
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			CMD_RESID_LEN(cp) = resid;
1038 1039

			if (!lscsi_status &&
1040
			    ((unsigned)(scsi_bufflen(cp) - resid) <
1041 1042
			     cp->underflow)) {
				qla_printk(KERN_INFO, ha,
1043 1044 1045 1046 1047 1048
					   "scsi(%ld:%d:%d:%d): Mid-layer underflow "
					   "detected (%x of %x bytes)...returning "
					   "error status.\n", ha->host_no,
					   cp->device->channel, cp->device->id,
					   cp->device->lun, resid,
					   scsi_bufflen(cp));
1049 1050 1051 1052

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

1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
		if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld): QUEUE FULL status detected "
			    "0x%x-0x%x.\n", ha->host_no, comp_status,
			    scsi_status));

			/* Adjust queue depth for all luns on the port. */
			fcport->last_queue_full = jiffies;
			starget_for_each_device(cp->device->sdev_target,
			    fcport, qla2x00_adjust_sdev_qdepth_down);
			break;
		}
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		if (lscsi_status != SS_CHECK_CONDITION)
			break;

1071
		memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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		if (!(scsi_status & SS_SENSE_LEN_VALID))
			break;

1075
		qla2x00_handle_sense(sp, sense_data, sense_len);
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		break;

	case CS_DATA_UNDERRUN:
1079
		resid = resid_len;
1080
		/* Use F/W calculated residual length. */
1081 1082 1083 1084 1085 1086
		if (IS_FWI2_CAPABLE(ha)) {
			if (scsi_status & SS_RESIDUAL_UNDER &&
			    resid != fw_resid_len) {
				scsi_status &= ~SS_RESIDUAL_UNDER;
				lscsi_status = 0;
			}
1087
			resid = fw_resid_len;
1088
		}
1089

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		if (scsi_status & SS_RESIDUAL_UNDER) {
1091
			scsi_set_resid(cp, resid);
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			CMD_RESID_LEN(cp) = resid;
1093 1094 1095
		} else {
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld:%d:%d) UNDERRUN status detected "
1096 1097 1098 1099 1100
			    "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
			    "os_underflow=0x%x\n", ha->host_no,
			    cp->device->id, cp->device->lun, comp_status,
			    scsi_status, resid_len, resid, cp->cmnd[0],
			    cp->underflow));
1101

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		}

		/*
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		 * Check to see if SCSI Status is non zero. If so report SCSI
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		 * Status.
		 */
		if (lscsi_status != 0) {
			cp->result = DID_OK << 16 | lscsi_status;

1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
			if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
				DEBUG2(printk(KERN_INFO
				    "scsi(%ld): QUEUE FULL status detected "
				    "0x%x-0x%x.\n", ha->host_no, comp_status,
				    scsi_status));

				/*
				 * Adjust queue depth for all luns on the
				 * port.
				 */
				fcport->last_queue_full = jiffies;
				starget_for_each_device(
				    cp->device->sdev_target, fcport,
				    qla2x00_adjust_sdev_qdepth_down);
				break;
			}
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			if (lscsi_status != SS_CHECK_CONDITION)
				break;

1130
			memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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			if (!(scsi_status & SS_SENSE_LEN_VALID))
				break;

1134
			qla2x00_handle_sense(sp, sense_data, sense_len);
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		} else {
			/*
			 * If RISC reports underrun and target does not report
			 * it then we must have a lost frame, so tell upper
			 * layer to retry it by reporting a bus busy.
			 */
			if (!(scsi_status & SS_RESIDUAL_UNDER)) {
				DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1143 1144 1145 1146 1147
					      "frame(s) detected (%x of %x bytes)..."
					      "retrying command.\n", ha->host_no,
					      cp->device->channel, cp->device->id,
					      cp->device->lun, resid,
					      scsi_bufflen(cp)));
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				cp->result = DID_BUS_BUSY << 16;
				break;
			}

			/* Handle mid-layer underflow */
1154
			if ((unsigned)(scsi_bufflen(cp) - resid) <
L
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1155 1156
			    cp->underflow) {
				qla_printk(KERN_INFO, ha,
1157 1158 1159 1160 1161 1162
					   "scsi(%ld:%d:%d:%d): Mid-layer underflow "
					   "detected (%x of %x bytes)...returning "
					   "error status.\n", ha->host_no,
					   cp->device->channel, cp->device->id,
					   cp->device->lun, resid,
					   scsi_bufflen(cp));
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				cp->result = DID_ERROR << 16;
				break;
			}

			/* Everybody online, looking good... */
			cp->result = DID_OK << 16;
		}
		break;

	case CS_DATA_OVERRUN:
		DEBUG2(printk(KERN_INFO
		    "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1176 1177
		    ha->host_no, cp->device->id, cp->device->lun, comp_status,
		    scsi_status));
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		DEBUG2(printk(KERN_INFO
		    "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
		    cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
		    cp->cmnd[4], cp->cmnd[5]));
		DEBUG2(printk(KERN_INFO
		    "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
		    "status!\n",
1185
		    cp->serial_number, scsi_bufflen(cp), resid_len));
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		cp->result = DID_ERROR << 16;
		break;

	case CS_PORT_LOGGED_OUT:
	case CS_PORT_CONFIG_CHG:
	case CS_PORT_BUSY:
	case CS_INCOMPLETE:
	case CS_PORT_UNAVAILABLE:
		/*
		 * If the port is in Target Down state, return all IOs for this
		 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
		 * retry_queue.
		 */
		DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
		    "pid=%ld, compl status=0x%x, port state=0x%x\n",
1202 1203
		    ha->host_no, cp->device->id, cp->device->lun,
		    cp->serial_number, comp_status,
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1204 1205
		    atomic_read(&fcport->state)));

已提交
1206
		cp->result = DID_BUS_BUSY << 16;
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		if (atomic_read(&fcport->state) == FCS_ONLINE) {
1208
			qla2x00_mark_device_lost(ha, fcport, 1, 1);
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		}
		break;

	case CS_RESET:
		DEBUG2(printk(KERN_INFO
		    "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
		    ha->host_no, comp_status, scsi_status));

已提交
1217
		cp->result = DID_RESET << 16;
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		break;

	case CS_ABORTED:
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		/*
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		 * hv2.19.12 - DID_ABORT does not retry the request if we
		 * aborted this request then abort otherwise it must be a
		 * reset.
		 */
		DEBUG2(printk(KERN_INFO
		    "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
		    ha->host_no, comp_status, scsi_status));

		cp->result = DID_RESET << 16;
		break;

	case CS_TIMEOUT:
1234 1235
		cp->result = DID_BUS_BUSY << 16;

1236
		if (IS_FWI2_CAPABLE(ha)) {
1237 1238 1239 1240 1241 1242 1243
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
			    "0x%x-0x%x\n", ha->host_no, cp->device->channel,
			    cp->device->id, cp->device->lun, comp_status,
			    scsi_status));
			break;
		}
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		DEBUG2(printk(KERN_INFO
		    "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1246 1247 1248
		    "sflags=%x.\n", ha->host_no, cp->device->channel,
		    cp->device->id, cp->device->lun, comp_status, scsi_status,
		    le16_to_cpu(sts->status_flags)));
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1250 1251
		/* Check to see if logout occurred. */
		if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1252
			qla2x00_mark_device_lost(ha, fcport, 1, 1);
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		break;

	default:
		DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1257
		    "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
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		qla_printk(KERN_INFO, ha,
		    "Unknown status detected 0x%x-0x%x.\n",
		    comp_status, scsi_status);

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

	/* Place command on done queue. */
	if (ha->status_srb == NULL)
已提交
1268
		qla2x00_sp_compl(ha, sp);
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}

/**
 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 *
 * Extended sense data.
 */
static void
qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
{
	uint8_t		sense_sz = 0;
	srb_t		*sp = ha->status_srb;
	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 "
1289
			    "sp=%p.\n", __func__, sp));
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1290 1291
			qla_printk(KERN_INFO, ha,
			    "cmd is NULL: already returned to OS (sp=%p)\n",
A
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1292
			    sp);
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			ha->status_srb = NULL;
			return;
		}

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

		/* Move sense data. */
1305
		if (IS_FWI2_CAPABLE(ha))
1306
			host_to_fcp_swap(pkt->data, sizeof(pkt->data));
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		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) {
			ha->status_srb = NULL;
已提交
1316
			qla2x00_sp_compl(ha, sp);
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1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
		}
	}
}

/**
 * qla2x00_error_entry() - Process an error entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
1327
qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
L
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1328 1329 1330 1331 1332 1333 1334 1335 1336
{
	srb_t *sp;

#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
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1337
		qla_printk(KERN_ERR, ha,
L
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1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
		    "%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. */
	if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
		sp = ha->outstanding_cmds[pkt->handle];
	else
		sp = NULL;

	if (sp) {
		/* Free outstanding command slot. */
		ha->outstanding_cmds[pkt->handle] = NULL;
1356

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1357 1358 1359 1360 1361 1362 1363 1364 1365 1366
		/* 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;
		}
已提交
1367
		qla2x00_sp_compl(ha, sp);
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1369 1370
	} else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
	    COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
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		DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
		    ha->host_no));
		qla_printk(KERN_WARNING, ha,
		    "Error entry - invalid handle\n");

		set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1377
		qla2xxx_wake_dpc(ha);
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	}
}

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 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452
/**
 * qla24xx_mbx_completion() - Process mailbox command completions.
 * @ha: SCSI driver HA context
 * @mb0: Mailbox0 register
 */
static void
qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
{
	uint16_t	cnt;
	uint16_t __iomem *wptr;
	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",
		    __func__, ha->host_no, ha->mcp->mb[0]));
	} else {
		DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
		    __func__, ha->host_no));
	}
}

/**
 * qla24xx_process_response_queue() - Process response queue entries.
 * @ha: SCSI driver HA context
 */
void
qla24xx_process_response_queue(struct scsi_qla_host *ha)
{
	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
	struct sts_entry_24xx *pkt;

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

	while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
		pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;

		ha->rsp_ring_index++;
		if (ha->rsp_ring_index == ha->response_q_length) {
			ha->rsp_ring_index = 0;
			ha->response_ring_ptr = ha->response_ring;
		} else {
			ha->response_ring_ptr++;
		}

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

			qla2x00_error_entry(ha, (sts_entry_t *) pkt);
			((response_t *)pkt)->signature = RESPONSE_PROCESSED;
			wmb();
			continue;
		}

		switch (pkt->entry_type) {
		case STATUS_TYPE:
			qla2x00_status_entry(ha, pkt);
			break;
		case STATUS_CONT_TYPE:
			qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
			break;
1453 1454 1455 1456
		case VP_RPT_ID_IOCB_TYPE:
			qla24xx_report_id_acquisition(ha,
			    (struct vp_rpt_id_entry_24xx *)pkt);
			break;
1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472
		default:
			/* Type Not Supported. */
			DEBUG4(printk(KERN_WARNING
			    "scsi(%ld): Received unknown response pkt type %x "
			    "entry status=%x.\n",
			    ha->host_no, pkt->entry_type, pkt->entry_status));
			break;
		}
		((response_t *)pkt)->signature = RESPONSE_PROCESSED;
		wmb();
	}

	/* Adjust ring index */
	WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
}

1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518
static void
qla2xxx_check_risc_status(scsi_qla_host_t *ha)
{
	int rval;
	uint32_t cnt;
	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

	if (!IS_QLA25XX(ha))
		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);
}

1519 1520 1521 1522 1523 1524 1525 1526 1527 1528
/**
 * 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
1529
qla24xx_intr_handler(int irq, void *dev_id)
1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548
{
	scsi_qla_host_t	*ha;
	struct device_reg_24xx __iomem *reg;
	int		status;
	unsigned long	iter;
	uint32_t	stat;
	uint32_t	hccr;
	uint16_t	mb[4];

	ha = (scsi_qla_host_t *) dev_id;
	if (!ha) {
		printk(KERN_INFO
		    "%s(): NULL host pointer\n", __func__);
		return IRQ_NONE;
	}

	reg = &ha->iobase->isp24;
	status = 0;

1549
	spin_lock(&ha->hardware_lock);
1550 1551 1552
	for (iter = 50; iter--; ) {
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
1553 1554 1555
			if (pci_channel_offline(ha->pdev))
				break;

1556 1557 1558 1559 1560 1561
			if (ha->hw_event_pause_errors == 0)
				qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR,
				    0, MSW(stat), LSW(stat));
			else if (ha->hw_event_pause_errors < 0xffffffff)
				ha->hw_event_pause_errors++;

1562 1563 1564 1565
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
1566 1567 1568

			qla2xxx_check_risc_status(ha);

1569
			ha->isp_ops->fw_dump(ha, 1);
1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602
			set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
			break;
		} else if ((stat & HSRX_RISC_INT) == 0)
			break;

		switch (stat & 0xff) {
		case 0x1:
		case 0x2:
		case 0x10:
		case 0x11:
			qla24xx_mbx_completion(ha, MSW(stat));
			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);
			qla2x00_async_event(ha, mb);
			break;
		case 0x13:
			qla24xx_process_response_queue(ha);
			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
			    "(%d).\n",
			    ha->host_no, stat & 0xff));
			break;
		}
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
		RD_REG_DWORD_RELAXED(&reg->hccr);
	}
1603
	spin_unlock(&ha->hardware_lock);
1604 1605 1606 1607

	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);
1608
		complete(&ha->mbx_intr_comp);
1609 1610 1611 1612 1613
	}

	return IRQ_HANDLED;
}

1614 1615 1616 1617 1618 1619 1620 1621 1622
static irqreturn_t
qla24xx_msix_rsp_q(int irq, void *dev_id)
{
	scsi_qla_host_t	*ha;
	struct device_reg_24xx __iomem *reg;

	ha = dev_id;
	reg = &ha->iobase->isp24;

1623
	spin_lock_irq(&ha->hardware_lock);
1624 1625 1626 1627

	qla24xx_process_response_queue(ha);
	WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);

1628
	spin_unlock_irq(&ha->hardware_lock);
1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646

	return IRQ_HANDLED;
}

static irqreturn_t
qla24xx_msix_default(int irq, void *dev_id)
{
	scsi_qla_host_t	*ha;
	struct device_reg_24xx __iomem *reg;
	int		status;
	uint32_t	stat;
	uint32_t	hccr;
	uint16_t	mb[4];

	ha = dev_id;
	reg = &ha->iobase->isp24;
	status = 0;

1647
	spin_lock_irq(&ha->hardware_lock);
1648
	do {
1649 1650
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
1651 1652 1653
			if (pci_channel_offline(ha->pdev))
				break;

1654 1655 1656 1657 1658 1659
			if (ha->hw_event_pause_errors == 0)
				qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR,
				    0, MSW(stat), LSW(stat));
			else if (ha->hw_event_pause_errors < 0xffffffff)
				ha->hw_event_pause_errors++;

1660 1661 1662 1663
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
1664 1665 1666

			qla2xxx_check_risc_status(ha);

1667
			ha->isp_ops->fw_dump(ha, 1);
1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698
			set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
			break;
		} else if ((stat & HSRX_RISC_INT) == 0)
			break;

		switch (stat & 0xff) {
		case 0x1:
		case 0x2:
		case 0x10:
		case 0x11:
			qla24xx_mbx_completion(ha, MSW(stat));
			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);
			qla2x00_async_event(ha, mb);
			break;
		case 0x13:
			qla24xx_process_response_queue(ha);
			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
			    "(%d).\n",
			    ha->host_no, stat & 0xff));
			break;
		}
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1699
	} while (0);
1700
	spin_unlock_irq(&ha->hardware_lock);
1701 1702 1703 1704

	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);
1705
		complete(&ha->mbx_intr_comp);
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716
	}

	return IRQ_HANDLED;
}

/* Interrupt handling helpers. */

struct qla_init_msix_entry {
	uint16_t entry;
	uint16_t index;
	const char *name;
1717
	irq_handler_t handler;
1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785
};

static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = {
	{ QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
		"qla2xxx (default)", qla24xx_msix_default },

	{ QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
		"qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
};

static void
qla24xx_disable_msix(scsi_qla_host_t *ha)
{
	int i;
	struct qla_msix_entry *qentry;

	for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
		qentry = &ha->msix_entries[imsix_entries[i].index];
		if (qentry->have_irq)
			free_irq(qentry->msix_vector, ha);
	}
	pci_disable_msix(ha->pdev);
}

static int
qla24xx_enable_msix(scsi_qla_host_t *ha)
{
	int i, ret;
	struct msix_entry entries[QLA_MSIX_ENTRIES];
	struct qla_msix_entry *qentry;

	for (i = 0; i < QLA_MSIX_ENTRIES; i++)
		entries[i].entry = imsix_entries[i].entry;

	ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries));
	if (ret) {
		qla_printk(KERN_WARNING, ha,
		    "MSI-X: Failed to enable support -- %d/%d\n",
		    QLA_MSIX_ENTRIES, ret);
		goto msix_out;
	}
	ha->flags.msix_enabled = 1;

	for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
		qentry = &ha->msix_entries[imsix_entries[i].index];
		qentry->msix_vector = entries[i].vector;
		qentry->msix_entry = entries[i].entry;
		qentry->have_irq = 0;
		ret = request_irq(qentry->msix_vector,
		    imsix_entries[i].handler, 0, imsix_entries[i].name, ha);
		if (ret) {
			qla_printk(KERN_WARNING, ha,
			    "MSI-X: Unable to register handler -- %x/%d.\n",
			    imsix_entries[i].index, ret);
			qla24xx_disable_msix(ha);
			goto msix_out;
		}
		qentry->have_irq = 1;
	}

msix_out:
	return ret;
}

int
qla2x00_request_irqs(scsi_qla_host_t *ha)
{
	int ret;
1786
	device_reg_t __iomem *reg = ha->iobase;
1787 1788

	/* If possible, enable MSI-X. */
1789
	if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1790 1791
		goto skip_msix;

1792 1793
        if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
	    !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1794 1795 1796 1797 1798 1799 1800
		DEBUG2(qla_printk(KERN_WARNING, ha,
		    "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
		    ha->chip_revision, ha->fw_attributes));

		goto skip_msix;
	}

1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812
	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;
	}

1813 1814 1815 1816 1817
	ret = qla24xx_enable_msix(ha);
	if (!ret) {
		DEBUG2(qla_printk(KERN_INFO, ha,
		    "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
		    ha->fw_attributes));
1818
		goto clear_risc_ints;
1819 1820 1821 1822
	}
	qla_printk(KERN_WARNING, ha,
	    "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
skip_msix:
1823

1824
	if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1825 1826 1827 1828 1829 1830 1831 1832 1833
		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;
	}
skip_msi:

1834
	ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1835
	    IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1836
	if (ret) {
1837 1838 1839
		qla_printk(KERN_WARNING, ha,
		    "Failed to reserve interrupt %d already in use.\n",
		    ha->pdev->irq);
1840 1841 1842 1843 1844 1845 1846
		goto fail;
	}
	ha->flags.inta_enabled = 1;
	ha->host->irq = ha->pdev->irq;
clear_risc_ints:

	ha->isp_ops->disable_intrs(ha);
1847
	spin_lock_irq(&ha->hardware_lock);
1848 1849 1850 1851 1852 1853 1854
	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);
1855
	}
1856
	spin_unlock_irq(&ha->hardware_lock);
1857
	ha->isp_ops->enable_intrs(ha);
1858

1859
fail:
1860 1861 1862 1863 1864 1865 1866 1867 1868
	return ret;
}

void
qla2x00_free_irqs(scsi_qla_host_t *ha)
{

	if (ha->flags.msix_enabled)
		qla24xx_disable_msix(ha);
1869
	else if (ha->flags.inta_enabled) {
1870
		free_irq(ha->host->irq, ha);
1871 1872
		pci_disable_msi(ha->pdev);
	}
1873
}