qla_isr.c 48.4 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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	/* 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 */
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		DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", ha->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(&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,
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		    "LIP reset occurred (%x).\n", mb[1]);
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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);
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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);
511
		set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
512 513

		ha->flags.gpsc_supported = 1;
514
		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 */
		/*
546
		 * 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.
		 */
		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 "
554 555
			    "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
562 563
		    "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 */
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		/* Check if the Vport has issued a SCR */
		if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
			break;
		/* Only handle SCNs for our Vport index. */
		if (ha->parent && ha->vp_idx != (mb[3] & 0xff))
			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] & 0xff) << 16) | mb[2];
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		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;
		}

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

632
		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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}

689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
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;
779 780

		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)
{
799
	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);
}

865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883
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)
884
		sp->fcport->ha->status_srb = sp;
885 886

	DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
887 888 889
	    "cmd=%p pid=%ld\n", __func__, sp->fcport->ha->host_no,
	    cp->device->channel, cp->device->id, cp->device->lun, cp,
	    cp->serial_number));
890 891 892 893 894
	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
901
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;
906 907
	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;
912
	uint32_t	sense_len, rsp_info_len, resid_len, fw_resid_len;
913 914 915 916
	uint8_t		*rsp_info, *sense_data;

	sts = (sts_entry_t *) pkt;
	sts24 = (struct sts_entry_24xx *) pkt;
917
	if (IS_FWI2_CAPABLE(ha)) {
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		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. */
933 934 935
	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 "
951
		    "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;

963
	fcport = sp->fcport;
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965
	sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
966
	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);
970
		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) {
984
		/* Sense data lies beyond any FCP RESPONSE data. */
985
		if (IS_FWI2_CAPABLE(ha))
986 987
			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)..."
990 991 992 993 994
			    "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
997
			qla2x00_sp_compl(ha, sp);
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			return;
		}
	}

1002 1003 1004 1005 1006
	/* 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:
1012
	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)) {
1018
			resid = resid_len;
1019
			scsi_set_resid(cp, resid);
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			CMD_RESID_LEN(cp) = resid;
1021 1022

			if (!lscsi_status &&
1023
			    ((unsigned)(scsi_bufflen(cp) - resid) <
1024 1025
			     cp->underflow)) {
				qla_printk(KERN_INFO, ha,
1026 1027 1028 1029 1030 1031
					   "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));
1032 1033 1034 1035

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

1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
		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;

1054
		memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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		if (!(scsi_status & SS_SENSE_LEN_VALID))
			break;

1058
		qla2x00_handle_sense(sp, sense_data, sense_len);
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		break;

	case CS_DATA_UNDERRUN:
1062
		resid = resid_len;
1063
		/* Use F/W calculated residual length. */
1064
		if (IS_FWI2_CAPABLE(ha)) {
1065 1066 1067
			if (!(scsi_status & SS_RESIDUAL_UNDER)) {
				lscsi_status = 0;
			} else if (resid != fw_resid_len) {
1068 1069 1070
				scsi_status &= ~SS_RESIDUAL_UNDER;
				lscsi_status = 0;
			}
1071
			resid = fw_resid_len;
1072
		}
1073

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		if (scsi_status & SS_RESIDUAL_UNDER) {
1075
			scsi_set_resid(cp, resid);
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			CMD_RESID_LEN(cp) = resid;
1077 1078 1079
		} else {
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld:%d:%d) UNDERRUN status detected "
1080 1081 1082 1083 1084
			    "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));
1085

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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;

1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
			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;

1114
			memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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			if (!(scsi_status & SS_SENSE_LEN_VALID))
				break;

1118
			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 "
1127 1128 1129 1130 1131
					      "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 */
1138
			if ((unsigned)(scsi_bufflen(cp) - resid) <
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			    cp->underflow) {
				qla_printk(KERN_INFO, ha,
1141 1142 1143 1144 1145 1146
					   "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",
1160 1161
		    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",
1169
		    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",
1186 1187
		    ha->host_no, cp->device->id, cp->device->lun,
		    cp->serial_number, comp_status,
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		    atomic_read(&fcport->state)));

已提交
1190
		cp->result = DID_BUS_BUSY << 16;
1191 1192
		if (atomic_read(&fcport->state) == FCS_ONLINE)
			qla2x00_mark_device_lost(fcport->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
1200
		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:
1217 1218
		cp->result = DID_BUS_BUSY << 16;

1219
		if (IS_FWI2_CAPABLE(ha)) {
1220 1221 1222 1223 1224 1225 1226
			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 "
1229 1230 1231
		    "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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1233 1234
		/* Check to see if logout occurred. */
		if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1235
			qla2x00_mark_device_lost(fcport->ha, fcport, 1, 1);
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		break;

	default:
		DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1240
		    "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
1251
		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 "
1272
			    "sp=%p.\n", __func__, sp));
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			qla_printk(KERN_INFO, ha,
			    "cmd is NULL: already returned to OS (sp=%p)\n",
A
Andrew Vasquez 已提交
1275
			    sp);
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1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287

			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. */
1288
		if (IS_FWI2_CAPABLE(ha))
1289
			host_to_fcp_swap(pkt->data, sizeof(pkt->data));
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1290 1291 1292 1293 1294 1295 1296 1297 1298
		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
1299
			qla2x00_sp_compl(ha, sp);
L
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1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
		}
	}
}

/**
 * qla2x00_error_entry() - Process an error entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
1310
qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
L
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1311 1312 1313 1314 1315 1316 1317 1318 1319
{
	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
Andrew Vasquez 已提交
1320
		qla_printk(KERN_ERR, ha,
L
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1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338
		    "%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;
1339

L
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1340 1341 1342 1343 1344 1345 1346 1347 1348 1349
		/* 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
1350
		qla2x00_sp_compl(ha, sp);
L
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1351

1352 1353
	} else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
	    COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
L
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1354 1355 1356 1357 1358 1359
		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);
1360
		qla2xxx_wake_dpc(ha);
L
Linus Torvalds 已提交
1361 1362 1363
	}
}

1364 1365 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
/**
 * 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;
1436 1437 1438 1439
		case VP_RPT_ID_IOCB_TYPE:
			qla24xx_report_id_acquisition(ha,
			    (struct vp_rpt_id_entry_24xx *)pkt);
			break;
1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455
		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);
}

1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 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
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);
}

1502 1503 1504 1505 1506 1507 1508 1509 1510 1511
/**
 * 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
1512
qla24xx_intr_handler(int irq, void *dev_id)
1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531
{
	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;

1532
	spin_lock(&ha->hardware_lock);
1533 1534 1535
	for (iter = 50; iter--; ) {
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
1536 1537 1538
			if (pci_channel_offline(ha->pdev))
				break;

1539 1540 1541 1542 1543 1544
			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++;

1545 1546 1547 1548
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
1549 1550 1551

			qla2xxx_check_risc_status(ha);

1552
			ha->isp_ops->fw_dump(ha, 1);
1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585
			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);
	}
1586
	spin_unlock(&ha->hardware_lock);
1587 1588 1589 1590

	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);
1591
		complete(&ha->mbx_intr_comp);
1592 1593 1594 1595 1596
	}

	return IRQ_HANDLED;
}

1597 1598 1599 1600 1601 1602 1603 1604 1605
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;

1606
	spin_lock_irq(&ha->hardware_lock);
1607 1608 1609 1610

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

1611
	spin_unlock_irq(&ha->hardware_lock);
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629

	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;

1630
	spin_lock_irq(&ha->hardware_lock);
1631
	do {
1632 1633
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
1634 1635 1636
			if (pci_channel_offline(ha->pdev))
				break;

1637 1638 1639 1640 1641 1642
			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++;

1643 1644 1645 1646
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
1647 1648 1649

			qla2xxx_check_risc_status(ha);

1650
			ha->isp_ops->fw_dump(ha, 1);
1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681
			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);
1682
	} while (0);
1683
	spin_unlock_irq(&ha->hardware_lock);
1684 1685 1686 1687

	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);
1688
		complete(&ha->mbx_intr_comp);
1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699
	}

	return IRQ_HANDLED;
}

/* Interrupt handling helpers. */

struct qla_init_msix_entry {
	uint16_t entry;
	uint16_t index;
	const char *name;
1700
	irq_handler_t handler;
1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 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
};

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;
1769
	device_reg_t __iomem *reg = ha->iobase;
1770 1771

	/* If possible, enable MSI-X. */
1772
	if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1773 1774
		goto skip_msix;

1775 1776
        if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
	    !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1777 1778 1779 1780 1781 1782 1783
		DEBUG2(qla_printk(KERN_WARNING, ha,
		    "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
		    ha->chip_revision, ha->fw_attributes));

		goto skip_msix;
	}

1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795
	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;
	}

1796 1797 1798 1799 1800
	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));
1801
		goto clear_risc_ints;
1802 1803 1804 1805
	}
	qla_printk(KERN_WARNING, ha,
	    "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
skip_msix:
1806

1807
	if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1808 1809 1810 1811 1812 1813 1814 1815 1816
		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:

1817
	ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1818
	    IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1819
	if (ret) {
1820 1821 1822
		qla_printk(KERN_WARNING, ha,
		    "Failed to reserve interrupt %d already in use.\n",
		    ha->pdev->irq);
1823 1824 1825 1826 1827 1828 1829
		goto fail;
	}
	ha->flags.inta_enabled = 1;
	ha->host->irq = ha->pdev->irq;
clear_risc_ints:

	ha->isp_ops->disable_intrs(ha);
1830
	spin_lock_irq(&ha->hardware_lock);
1831 1832 1833 1834 1835 1836 1837
	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);
1838
	}
1839
	spin_unlock_irq(&ha->hardware_lock);
1840

1841
fail:
1842 1843 1844 1845 1846 1847 1848 1849 1850
	return ret;
}

void
qla2x00_free_irqs(scsi_qla_host_t *ha)
{

	if (ha->flags.msix_enabled)
		qla24xx_disable_msix(ha);
1851
	else if (ha->flags.inta_enabled) {
1852
		free_irq(ha->host->irq, ha);
1853 1854
		pci_disable_msi(ha->pdev);
	}
1855
}