qla_isr.c 54.3 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);
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static void qla2x00_process_completed_request(struct scsi_qla_host *,
	struct req_que *, uint32_t);
static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
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static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
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static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
	sts_entry_t *);
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/**
 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
 * @irq:
 * @dev_id: SCSI driver HA context
 *
 * Called by system whenever the host adapter generates an interrupt.
 *
 * Returns handled flag.
 */
irqreturn_t
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qla2100_intr_handler(int irq, void *dev_id)
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{
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	scsi_qla_host_t	*vha;
	struct qla_hw_data *ha;
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	struct device_reg_2xxx __iomem *reg;
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	int		status;
	unsigned long	iter;
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	uint16_t	hccr;
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	uint16_t	mb[4];
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	struct rsp_que *rsp;
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	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
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		printk(KERN_INFO
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		    "%s(): NULL response queue pointer\n", __func__);
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		return (IRQ_NONE);
	}

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

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	spin_lock(&ha->hardware_lock);
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	vha = pci_get_drvdata(ha->pdev);
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	for (iter = 50; iter--; ) {
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		hccr = RD_REG_WORD(&reg->hccr);
		if (hccr & HCCR_RISC_PAUSE) {
			if (pci_channel_offline(ha->pdev))
				break;

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

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			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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			break;
		} else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
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			break;

		if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
			WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
			RD_REG_WORD(&reg->hccr);

			/* Get mailbox data. */
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			mb[0] = RD_MAILBOX_REG(ha, reg, 0);
			if (mb[0] > 0x3fff && mb[0] < 0x8000) {
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				qla2x00_mbx_completion(vha, mb[0]);
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				status |= MBX_INTERRUPT;
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			} else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
				mb[1] = RD_MAILBOX_REG(ha, reg, 1);
				mb[2] = RD_MAILBOX_REG(ha, reg, 2);
				mb[3] = RD_MAILBOX_REG(ha, reg, 3);
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				qla2x00_async_event(vha, rsp, mb);
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			} else {
				/*EMPTY*/
				DEBUG2(printk("scsi(%ld): Unrecognized "
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				    "interrupt type (%d).\n",
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				    vha->host_no, mb[0]));
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			}
			/* Release mailbox registers. */
			WRT_REG_WORD(&reg->semaphore, 0);
			RD_REG_WORD(&reg->semaphore);
		} else {
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			qla2x00_process_response_queue(rsp);
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			WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
			RD_REG_WORD(&reg->hccr);
		}
	}
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	spin_unlock(&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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{
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	scsi_qla_host_t	*vha;
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	struct device_reg_2xxx __iomem *reg;
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	int		status;
	unsigned long	iter;
	uint32_t	stat;
	uint16_t	hccr;
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	uint16_t	mb[4];
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	struct rsp_que *rsp;
	struct qla_hw_data *ha;
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	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
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		printk(KERN_INFO
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		    "%s(): NULL response queue pointer\n", __func__);
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		return (IRQ_NONE);
	}

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

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	spin_lock(&ha->hardware_lock);
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	vha = pci_get_drvdata(ha->pdev);
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	for (iter = 50; iter--; ) {
		stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
		if (stat & HSR_RISC_PAUSED) {
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			if (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(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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			break;
		} else if ((stat & HSR_RISC_INT) == 0)
			break;

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

			/* Release mailbox registers. */
			WRT_REG_WORD(&reg->semaphore, 0);
			break;
		case 0x12:
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			mb[0] = MSW(stat);
			mb[1] = RD_MAILBOX_REG(ha, reg, 1);
			mb[2] = RD_MAILBOX_REG(ha, reg, 2);
			mb[3] = RD_MAILBOX_REG(ha, reg, 3);
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			qla2x00_async_event(vha, rsp, mb);
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			break;
		case 0x13:
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			qla2x00_process_response_queue(rsp);
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			break;
		case 0x15:
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			mb[0] = MBA_CMPLT_1_16BIT;
			mb[1] = MSW(stat);
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			qla2x00_async_event(vha, rsp, mb);
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			break;
		case 0x16:
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			mb[0] = MBA_SCSI_COMPLETION;
			mb[1] = MSW(stat);
			mb[2] = RD_MAILBOX_REG(ha, reg, 2);
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			qla2x00_async_event(vha, rsp, mb);
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			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
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			    "(%d).\n",
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			    vha->host_no, stat & 0xff));
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			break;
		}
		WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
		RD_REG_WORD_RELAXED(&reg->hccr);
	}
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	spin_unlock(&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
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qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
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{
	uint16_t	cnt;
	uint16_t __iomem *wptr;
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	struct qla_hw_data *ha = vha->hw;
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	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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	/* Load return mailbox registers. */
	ha->flags.mbox_int = 1;
	ha->mailbox_out[0] = mb0;
	wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);

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

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

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

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

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

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

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

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

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/**
 * qla2x00_async_event() - Process aynchronous events.
 * @ha: SCSI driver HA context
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 * @mb: Mailbox registers (0 - 3)
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 */
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void
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qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
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{
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#define LS_UNKNOWN	2
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	static char	*link_speeds[] = { "1", "2", "?", "4", "8", "10" };
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	char		*link_speed;
	uint16_t	handle_cnt;
	uint16_t	cnt;
	uint32_t	handles[5];
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	struct qla_hw_data *ha = vha->hw;
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	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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	uint32_t	rscn_entry, host_pid;
	uint8_t		rscn_queue_index;
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	unsigned long	flags;
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	/* Setup to process RIO completion. */
	handle_cnt = 0;
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	if (IS_QLA81XX(ha))
		goto skip_rio;
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	switch (mb[0]) {
	case MBA_SCSI_COMPLETION:
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		handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
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		handle_cnt = 1;
		break;
	case MBA_CMPLT_1_16BIT:
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		handles[0] = mb[1];
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		handle_cnt = 1;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_2_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
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		handle_cnt = 2;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_3_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
		handles[2] = mb[3];
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		handle_cnt = 3;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_4_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
		handles[2] = mb[3];
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		handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
		handle_cnt = 4;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_5_16BIT:
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		handles[0] = mb[1];
		handles[1] = mb[2];
		handles[2] = mb[3];
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		handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
		handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
		handle_cnt = 5;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	case MBA_CMPLT_2_32BIT:
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		handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
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		handles[1] = le32_to_cpu(
		    ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
		    RD_MAILBOX_REG(ha, reg, 6));
		handle_cnt = 2;
		mb[0] = MBA_SCSI_COMPLETION;
		break;
	default:
		break;
	}
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skip_rio:
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	switch (mb[0]) {
	case MBA_SCSI_COMPLETION:	/* Fast Post */
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		if (!vha->flags.online)
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			break;

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

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

	case MBA_SYSTEM_ERR:		/* System Error */
		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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		ha->isp_ops->fw_dump(vha, 1);
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		if (IS_FWI2_CAPABLE(ha)) {
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			if (mb[1] == 0 && mb[2] == 0) {
				qla_printk(KERN_ERR, ha,
				    "Unrecoverable Hardware Error: adapter "
				    "marked OFFLINE!\n");
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				vha->flags.online = 0;
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			} else
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				set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		} else if (mb[1] == 0) {
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			qla_printk(KERN_INFO, ha,
			    "Unrecoverable Hardware Error: adapter marked "
			    "OFFLINE!\n");
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			vha->flags.online = 0;
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		} else
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			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		break;

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

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

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

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

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

	case MBA_LIP_OCCURRED:		/* Loop Initialization Procedure */
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		DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
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		    mb[1]));
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		qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
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		if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
			atomic_set(&vha->loop_state, LOOP_DOWN);
			atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

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

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

	case MBA_LOOP_UP:		/* Loop Up Event */
		if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
			link_speed = link_speeds[0];
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			ha->link_data_rate = PORT_SPEED_1GB;
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		} else {
468
			link_speed = link_speeds[LS_UNKNOWN];
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			if (mb[1] < 5)
				link_speed = link_speeds[mb[1]];
471 472
			else if (mb[1] == 0x13)
				link_speed = link_speeds[5];
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			ha->link_data_rate = mb[1];
		}

		DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
477
		    vha->host_no, link_speed));
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		qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
		    link_speed);

481 482
		vha->flags.management_server_logged_in = 0;
		qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
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		break;

	case MBA_LOOP_DOWN:		/* Loop Down Event */
486
		DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
487
		    "(%x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3]));
488 489
		qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
		    mb[1], mb[2], mb[3]);
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491 492 493 494 495
		if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
			atomic_set(&vha->loop_state, LOOP_DOWN);
			atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
			vha->device_flags |= DFLG_NO_CABLE;
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

498 499 500
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
501 502
		}

503
		vha->flags.management_server_logged_in = 0;
504
		ha->link_data_rate = PORT_SPEED_UNKNOWN;
505
		qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
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		break;

	case MBA_LIP_RESET:		/* LIP reset occurred */
		DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
510
		    vha->host_no, mb[1]));
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		qla_printk(KERN_INFO, ha,
512
		    "LIP reset occurred (%x).\n", mb[1]);
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514 515 516 517
		if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
			atomic_set(&vha->loop_state, LOOP_DOWN);
			atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

520 521 522
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
523 524
		}

525
		set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
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		ha->operating_mode = LOOP;
528 529
		vha->flags.management_server_logged_in = 0;
		qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
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		break;

532
	/* case MBA_DCBX_COMPLETE: */
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	case MBA_POINT_TO_POINT:	/* Point-to-Point */
		if (IS_QLA2100(ha))
			break;

537 538 539 540 541 542
		if (IS_QLA81XX(ha))
			DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
			    "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
		else
			DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
			    "received.\n", vha->host_no));
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		/*
		 * Until there's a transition from loop down to loop up, treat
		 * this as loop down only.
		 */
548 549 550 551
		if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
			atomic_set(&vha->loop_state, LOOP_DOWN);
			if (!atomic_read(&vha->loop_down_timer))
				atomic_set(&vha->loop_down_timer,
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				    LOOP_DOWN_TIME);
553
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

556 557 558
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
559 560
		}

561 562 563 564 565
		if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
			set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);

		set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
		set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
566 567

		ha->flags.gpsc_supported = 1;
568
		vha->flags.management_server_logged_in = 0;
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		break;

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

		DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
		    "received.\n",
577
		    vha->host_no));
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		qla_printk(KERN_INFO, ha,
		    "Configuration change detected: value=%x.\n", mb[1]);

581 582 583 584
		if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
			atomic_set(&vha->loop_state, LOOP_DOWN);
			if (!atomic_read(&vha->loop_down_timer))
				atomic_set(&vha->loop_down_timer,
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				    LOOP_DOWN_TIME);
586
			qla2x00_mark_all_devices_lost(vha, 1);
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		}

589 590 591
		if (vha->vp_idx) {
			atomic_set(&vha->vp_state, VP_FAILED);
			fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
592 593
		}

594 595
		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
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		break;

	case MBA_PORT_UPDATE:		/* Port database update */
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		/* Only handle SCNs for our Vport index. */
		if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
			break;

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		/*
604
		 * 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.
		 */
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		atomic_set(&vha->loop_down_timer, 0);
		if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
		    atomic_read(&vha->loop_state) != LOOP_DEAD) {
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			DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
612
			    "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
613
			    mb[2], mb[3]));
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			break;
		}

		DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
618
		    vha->host_no));
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		DEBUG(printk(KERN_INFO
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		    "scsi(%ld): Port database changed %04x %04x %04x.\n",
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		    vha->host_no, mb[1], mb[2], mb[3]));
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		/*
		 * Mark all devices as missing so we will login again.
		 */
626
		atomic_set(&vha->loop_state, LOOP_UP);
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628
		qla2x00_mark_all_devices_lost(vha, 1);
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		vha->flags.rscn_queue_overflow = 1;
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		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
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		break;

	case MBA_RSCN_UPDATE:		/* State Change Registration */
637
		/* Check if the Vport has issued a SCR */
638
		if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
639 640
			break;
		/* Only handle SCNs for our Vport index. */
641
		if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
642
			break;
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		DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
644
		    vha->host_no));
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		DEBUG(printk(KERN_INFO
646
		    "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
647
		    vha->host_no, mb[1], mb[2], mb[3]));
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649
		rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
650 651
		host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
				| vha->d_id.b.al_pa;
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		if (rscn_entry == host_pid) {
			DEBUG(printk(KERN_INFO
			    "scsi(%ld): Ignoring RSCN update to local host "
			    "port ID (%06x)\n",
656
			    vha->host_no, host_pid));
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			break;
		}

660 661
		/* Ignore reserved bits from RSCN-payload. */
		rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
662
		rscn_queue_index = vha->rscn_in_ptr + 1;
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		if (rscn_queue_index == MAX_RSCN_COUNT)
			rscn_queue_index = 0;
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		if (rscn_queue_index != vha->rscn_out_ptr) {
			vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
			vha->rscn_in_ptr = rscn_queue_index;
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		} else {
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			vha->flags.rscn_queue_overflow = 1;
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		}

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

	/* case MBA_RIO_RESPONSE: */
	case MBA_ZIO_RESPONSE:
683
		DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
684
		    vha->host_no));
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686
		if (IS_FWI2_CAPABLE(ha))
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			qla24xx_process_response_queue(vha, rsp);
688
		else
689
			qla2x00_process_response_queue(rsp);
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		break;
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	case MBA_DISCARD_RND_FRAME:
		DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
694
		    "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
695
		break;
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	case MBA_TRACE_NOTIFICATION:
		DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
699
		vha->host_no, mb[1], mb[2]));
700
		break;
701 702 703

	case MBA_ISP84XX_ALERT:
		DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
704
		    "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
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

		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;
737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
	case MBA_DCBX_START:
		DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
		    vha->host_no, mb[1], mb[2], mb[3]));
		break;
	case MBA_DCBX_PARAM_UPDATE:
		DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
		    "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
		break;
	case MBA_FCF_CONF_ERR:
		DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
		    "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
		break;
	case MBA_IDC_COMPLETE:
	case MBA_IDC_NOTIFY:
	case MBA_IDC_TIME_EXT:
752
		qla81xx_idc_event(vha, mb[0], mb[1]);
753
		break;
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	}
755

756
	if (!vha->vp_idx && ha->num_vhosts)
757
		qla2x00_alert_all_vps(rsp, mb);
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}

760 761 762 763
static void
qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
{
	fc_port_t *fcport = data;
764 765 766 767
	struct scsi_qla_host *vha = fcport->vha;
	struct qla_hw_data *ha = vha->hw;
	struct req_que *req = NULL;

768 769 770
	if (!ql2xqfulltracking)
		return;

771
	req = vha->req;
772 773 774
	if (!req)
		return;
	if (req->max_q_depth <= sdev->queue_depth)
775 776 777 778 779 780 781 782 783 784 785
		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;

786
	DEBUG2(qla_printk(KERN_INFO, ha,
787
	    "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
788
	    fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
789 790 791 792 793 794 795 796 797 798 799
	    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;

800
	DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
801
	    "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
802
	    fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
803 804 805 806
	    sdev->queue_depth));
}

static inline void
807 808
qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
								srb_t *sp)
809 810 811 812
{
	fc_port_t *fcport;
	struct scsi_device *sdev;

813 814 815
	if (!ql2xqfulltracking)
		return;

816
	sdev = sp->cmd->device;
817
	if (sdev->queue_depth >= req->max_q_depth)
818 819 820 821 822 823 824 825 826 827 828 829 830 831
		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
838 839
qla2x00_process_completed_request(struct scsi_qla_host *vha,
				struct req_que *req, uint32_t index)
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{
	srb_t *sp;
842
	struct qla_hw_data *ha = vha->hw;
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	/* Validate handle. */
	if (index >= MAX_OUTSTANDING_COMMANDS) {
		DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
847
		    vha->host_no, index));
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		qla_printk(KERN_WARNING, ha,
		    "Invalid SCSI completion handle %d.\n", index);

851
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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		return;
	}

855
	sp = req->outstanding_cmds[index];
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	if (sp) {
		/* Free outstanding command slot. */
858
		req->outstanding_cmds[index] = NULL;
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		/* Save ISP completion status */
		sp->cmd->result = DID_OK << 16;
862

863 864
		qla2x00_ramp_up_queue_depth(vha, req, sp);
		qla2x00_sp_compl(ha, sp);
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	} else {
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		DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
			" handle(%d)\n", vha->host_no, req->id, index));
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		qla_printk(KERN_WARNING, ha,
		    "Invalid ISP SCSI completion handle\n");

871
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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	}
}

/**
 * qla2x00_process_response_queue() - Process response queue entries.
 * @ha: SCSI driver HA context
 */
void
880
qla2x00_process_response_queue(struct rsp_que *rsp)
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{
882 883
	struct scsi_qla_host *vha;
	struct qla_hw_data *ha = rsp->hw;
884
	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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	sts_entry_t	*pkt;
	uint16_t        handle_cnt;
	uint16_t        cnt;
888

889
	vha = pci_get_drvdata(ha->pdev);
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891
	if (!vha->flags.online)
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		return;

894 895
	while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
		pkt = (sts_entry_t *)rsp->ring_ptr;
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897 898 899 900
		rsp->ring_index++;
		if (rsp->ring_index == rsp->length) {
			rsp->ring_index = 0;
			rsp->ring_ptr = rsp->ring;
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		} else {
902
			rsp->ring_ptr++;
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		}

		if (pkt->entry_status != 0) {
			DEBUG3(printk(KERN_INFO
907
			    "scsi(%ld): Process error entry.\n", vha->host_no));
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909
			qla2x00_error_entry(vha, rsp, pkt);
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			((response_t *)pkt)->signature = RESPONSE_PROCESSED;
			wmb();
			continue;
		}

		switch (pkt->entry_type) {
		case STATUS_TYPE:
917
			qla2x00_status_entry(vha, rsp, pkt);
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			break;
		case STATUS_TYPE_21:
			handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
			for (cnt = 0; cnt < handle_cnt; cnt++) {
922
				qla2x00_process_completed_request(vha, rsp->req,
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				    ((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++) {
929
				qla2x00_process_completed_request(vha, rsp->req,
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				    ((sts22_entry_t *)pkt)->handle[cnt]);
			}
			break;
		case STATUS_CONT_TYPE:
934
			qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
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			break;
		default:
			/* Type Not Supported. */
			DEBUG4(printk(KERN_WARNING
			    "scsi(%ld): Received unknown response pkt type %x "
			    "entry status=%x.\n",
941
			    vha->host_no, pkt->entry_type, pkt->entry_status));
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			break;
		}
		((response_t *)pkt)->signature = RESPONSE_PROCESSED;
		wmb();
	}

	/* Adjust ring index */
949
	WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
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}

952
static inline void
953 954
qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
	struct rsp_que *rsp)
955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970
{
	struct scsi_cmnd *cp = sp->cmd;

	if (sense_len >= SCSI_SENSE_BUFFERSIZE)
		sense_len = SCSI_SENSE_BUFFERSIZE;

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

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

	sp->request_sense_ptr += sense_len;
	sp->request_sense_length -= sense_len;
	if (sp->request_sense_length != 0)
971
		rsp->status_srb = sp;
972 973

	DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
974
	    "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
975 976
	    cp->device->channel, cp->device->id, cp->device->lun, cp,
	    cp->serial_number));
977
	if (sense_len)
978
		DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
979 980
}

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/**
 * qla2x00_status_entry() - Process a Status IOCB entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
987
qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
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{
	srb_t		*sp;
	fc_port_t	*fcport;
	struct scsi_cmnd *cp;
992 993
	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;
998
	uint32_t	sense_len, rsp_info_len, resid_len, fw_resid_len;
999
	uint8_t		*rsp_info, *sense_data;
1000
	struct qla_hw_data *ha = vha->hw;
1001 1002 1003
	uint32_t handle;
	uint16_t que;
	struct req_que *req;
1004 1005 1006

	sts = (sts_entry_t *) pkt;
	sts24 = (struct sts_entry_24xx *) pkt;
1007
	if (IS_FWI2_CAPABLE(ha)) {
1008 1009 1010 1011 1012 1013
		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;
	}
1014 1015 1016
	handle = (uint32_t) LSW(sts->handle);
	que = MSW(sts->handle);
	req = ha->req_q_map[que];
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	/* Fast path completion. */
1018
	if (comp_status == CS_COMPLETE && scsi_status == 0) {
1019
		qla2x00_process_completed_request(vha, req, handle);
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		return;
	}

	/* Validate handle. */
1025 1026 1027
	if (handle < MAX_OUTSTANDING_COMMANDS) {
		sp = req->outstanding_cmds[handle];
		req->outstanding_cmds[handle] = NULL;
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	} else
		sp = NULL;

	if (sp == NULL) {
		DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1033
		    vha->host_no));
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		qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");

1036 1037
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
		qla2xxx_wake_dpc(vha);
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		return;
	}
	cp = sp->cmd;
	if (cp == NULL) {
		DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1043
		    "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
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		qla_printk(KERN_WARNING, ha,
		    "Command is NULL: already returned to OS (sp=%p)\n", sp);

		return;
	}

1050
  	lscsi_status = scsi_status & STATUS_MASK;
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1051

1052
	fcport = sp->fcport;
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1053

1054
	sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1055
	if (IS_FWI2_CAPABLE(ha)) {
1056 1057 1058
		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);
1059
		fw_resid_len = le32_to_cpu(sts24->residual_len);
1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070
		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) {
1073
		/* Sense data lies beyond any FCP RESPONSE data. */
1074
		if (IS_FWI2_CAPABLE(ha))
1075 1076
			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)..."
1079
			    "retrying command\n", vha->host_no,
1080 1081 1082 1083
			    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;
1086
			qla2x00_sp_compl(ha, sp);
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			return;
		}
	}

1091 1092 1093 1094 1095
	/* 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:
1101
	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)) {
1107
			resid = resid_len;
1108
			scsi_set_resid(cp, resid);
1109 1110

			if (!lscsi_status &&
1111
			    ((unsigned)(scsi_bufflen(cp) - resid) <
1112 1113
			     cp->underflow)) {
				qla_printk(KERN_INFO, ha,
1114 1115
					   "scsi(%ld:%d:%d:%d): Mid-layer underflow "
					   "detected (%x of %x bytes)...returning "
1116
					   "error status.\n", vha->host_no,
1117 1118 1119
					   cp->device->channel, cp->device->id,
					   cp->device->lun, resid,
					   scsi_bufflen(cp));
1120 1121 1122 1123

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

1127 1128 1129
		if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld): QUEUE FULL status detected "
1130
			    "0x%x-0x%x.\n", vha->host_no, comp_status,
1131 1132 1133
			    scsi_status));

			/* Adjust queue depth for all luns on the port. */
1134 1135
			if (!ql2xqfulltracking)
				break;
1136 1137 1138 1139 1140
			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;

1144
		memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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		if (!(scsi_status & SS_SENSE_LEN_VALID))
			break;

1148
		qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
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		break;

	case CS_DATA_UNDERRUN:
1152
		resid = resid_len;
1153
		/* Use F/W calculated residual length. */
1154
		if (IS_FWI2_CAPABLE(ha)) {
1155 1156 1157
			if (!(scsi_status & SS_RESIDUAL_UNDER)) {
				lscsi_status = 0;
			} else if (resid != fw_resid_len) {
1158 1159 1160
				scsi_status &= ~SS_RESIDUAL_UNDER;
				lscsi_status = 0;
			}
1161
			resid = fw_resid_len;
1162
		}
1163

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		if (scsi_status & SS_RESIDUAL_UNDER) {
1165
			scsi_set_resid(cp, resid);
1166 1167 1168
		} else {
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld:%d:%d) UNDERRUN status detected "
1169
			    "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1170
			    "os_underflow=0x%x\n", vha->host_no,
1171 1172 1173
			    cp->device->id, cp->device->lun, comp_status,
			    scsi_status, resid_len, resid, cp->cmnd[0],
			    cp->underflow));
1174

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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;

1184 1185 1186
			if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
				DEBUG2(printk(KERN_INFO
				    "scsi(%ld): QUEUE FULL status detected "
1187
				    "0x%x-0x%x.\n", vha->host_no, comp_status,
1188 1189 1190 1191 1192 1193
				    scsi_status));

				/*
				 * Adjust queue depth for all luns on the
				 * port.
				 */
1194 1195
				if (!ql2xqfulltracking)
					break;
1196 1197 1198 1199 1200 1201
				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;

1205
			memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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			if (!(scsi_status & SS_SENSE_LEN_VALID))
				break;

1209
			qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
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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
1214
			 * layer to retry it by reporting an error.
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1215 1216 1217
			 */
			if (!(scsi_status & SS_RESIDUAL_UNDER)) {
				DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1218
					      "frame(s) detected (%x of %x bytes)..."
1219 1220 1221 1222
					      "retrying command.\n",
					vha->host_no, cp->device->channel,
					cp->device->id, cp->device->lun, resid,
					scsi_bufflen(cp)));
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1223

1224
				cp->result = DID_ERROR << 16;
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1225 1226 1227 1228
				break;
			}

			/* Handle mid-layer underflow */
1229
			if ((unsigned)(scsi_bufflen(cp) - resid) <
L
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1230 1231
			    cp->underflow) {
				qla_printk(KERN_INFO, ha,
1232 1233
					   "scsi(%ld:%d:%d:%d): Mid-layer underflow "
					   "detected (%x of %x bytes)...returning "
1234
					   "error status.\n", vha->host_no,
1235 1236 1237
					   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",
1251
		    vha->host_no, cp->device->id, cp->device->lun, comp_status,
1252
		    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",
1260
		    cp->serial_number, scsi_bufflen(cp), resid_len));
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1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276

		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",
1277
		    vha->host_no, cp->device->id, cp->device->lun,
1278
		    cp->serial_number, comp_status,
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1279 1280
		    atomic_read(&fcport->state)));

1281 1282 1283 1284 1285 1286
		/*
		 * We are going to have the fc class block the rport
		 * while we try to recover so instruct the mid layer
		 * to requeue until the class decides how to handle this.
		 */
		cp->result = DID_TRANSPORT_DISRUPTED << 16;
1287
		if (atomic_read(&fcport->state) == FCS_ONLINE)
1288
			qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
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1289 1290 1291 1292 1293
		break;

	case CS_RESET:
		DEBUG2(printk(KERN_INFO
		    "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1294
		    vha->host_no, comp_status, scsi_status));
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1295

已提交
1296
		cp->result = DID_RESET << 16;
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1297 1298 1299
		break;

	case CS_ABORTED:
A
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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",
1307
		    vha->host_no, comp_status, scsi_status));
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1308 1309 1310 1311 1312

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

	case CS_TIMEOUT:
1313 1314 1315 1316 1317 1318
		/*
		 * We are going to have the fc class block the rport
		 * while we try to recover so instruct the mid layer
		 * to requeue until the class decides how to handle this.
		 */
		cp->result = DID_TRANSPORT_DISRUPTED << 16;
1319

1320
		if (IS_FWI2_CAPABLE(ha)) {
1321 1322
			DEBUG2(printk(KERN_INFO
			    "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1323
			    "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1324 1325 1326 1327
			    cp->device->id, cp->device->lun, comp_status,
			    scsi_status));
			break;
		}
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1328 1329
		DEBUG2(printk(KERN_INFO
		    "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1330
		    "sflags=%x.\n", vha->host_no, cp->device->channel,
1331 1332
		    cp->device->id, cp->device->lun, comp_status, scsi_status,
		    le16_to_cpu(sts->status_flags)));
L
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1333

1334 1335
		/* Check to see if logout occurred. */
		if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1336
			qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
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		break;

	default:
		DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1341
		    "0x%x-0x%x.\n", vha->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. */
1351
	if (rsp->status_srb == NULL)
1352
		qla2x00_sp_compl(ha, sp);
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1353 1354 1355 1356 1357 1358 1359 1360 1361 1362
}

/**
 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 *
 * Extended sense data.
 */
static void
1363
qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
L
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1364 1365
{
	uint8_t		sense_sz = 0;
1366 1367
	struct qla_hw_data *ha = rsp->hw;
	srb_t		*sp = rsp->status_srb;
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	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 "
1374
			    "sp=%p.\n", __func__, sp));
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1375 1376
			qla_printk(KERN_INFO, ha,
			    "cmd is NULL: already returned to OS (sp=%p)\n",
A
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1377
			    sp);
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1378

1379
			rsp->status_srb = NULL;
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			return;
		}

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

		/* Move sense data. */
1390
		if (IS_FWI2_CAPABLE(ha))
1391
			host_to_fcp_swap(pkt->data, sizeof(pkt->data));
L
Linus Torvalds 已提交
1392 1393 1394 1395 1396 1397 1398 1399
		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) {
1400
			rsp->status_srb = NULL;
1401
			qla2x00_sp_compl(ha, sp);
L
Linus Torvalds 已提交
1402 1403 1404 1405 1406 1407 1408 1409 1410 1411
		}
	}
}

/**
 * qla2x00_error_entry() - Process an error entry.
 * @ha: SCSI driver HA context
 * @pkt: Entry pointer
 */
static void
1412
qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
L
Linus Torvalds 已提交
1413 1414
{
	srb_t *sp;
1415
	struct qla_hw_data *ha = vha->hw;
1416 1417 1418
	uint32_t handle = LSW(pkt->handle);
	uint16_t que = MSW(pkt->handle);
	struct req_que *req = ha->req_q_map[que];
L
Linus Torvalds 已提交
1419 1420 1421 1422 1423 1424
#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
1425
		qla_printk(KERN_ERR, ha,
L
Linus Torvalds 已提交
1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
		    "%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. */
1436 1437
	if (handle < MAX_OUTSTANDING_COMMANDS)
		sp = req->outstanding_cmds[handle];
L
Linus Torvalds 已提交
1438 1439 1440 1441 1442
	else
		sp = NULL;

	if (sp) {
		/* Free outstanding command slot. */
1443
		req->outstanding_cmds[handle] = NULL;
1444

L
Linus Torvalds 已提交
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454
		/* 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;
		}
1455
		qla2x00_sp_compl(ha, sp);
L
Linus Torvalds 已提交
1456

1457 1458
	} else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
	    COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
L
Linus Torvalds 已提交
1459
		DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1460
		    vha->host_no));
L
Linus Torvalds 已提交
1461 1462 1463
		qla_printk(KERN_WARNING, ha,
		    "Error entry - invalid handle\n");

1464 1465
		set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
		qla2xxx_wake_dpc(vha);
L
Linus Torvalds 已提交
1466 1467 1468
	}
}

1469 1470 1471 1472 1473 1474
/**
 * qla24xx_mbx_completion() - Process mailbox command completions.
 * @ha: SCSI driver HA context
 * @mb0: Mailbox0 register
 */
static void
1475
qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1476 1477 1478
{
	uint16_t	cnt;
	uint16_t __iomem *wptr;
1479
	struct qla_hw_data *ha = vha->hw;
1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493
	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",
1494
		    __func__, vha->host_no, ha->mcp->mb[0]));
1495 1496
	} else {
		DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1497
		    __func__, vha->host_no));
1498 1499 1500 1501 1502 1503 1504
	}
}

/**
 * qla24xx_process_response_queue() - Process response queue entries.
 * @ha: SCSI driver HA context
 */
1505 1506
void qla24xx_process_response_queue(struct scsi_qla_host *vha,
	struct rsp_que *rsp)
1507 1508 1509
{
	struct sts_entry_24xx *pkt;

1510
	if (!vha->flags.online)
1511 1512
		return;

1513 1514
	while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
		pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1515

1516 1517 1518 1519
		rsp->ring_index++;
		if (rsp->ring_index == rsp->length) {
			rsp->ring_index = 0;
			rsp->ring_ptr = rsp->ring;
1520
		} else {
1521
			rsp->ring_ptr++;
1522 1523 1524 1525
		}

		if (pkt->entry_status != 0) {
			DEBUG3(printk(KERN_INFO
1526
			    "scsi(%ld): Process error entry.\n", vha->host_no));
1527

1528
			qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1529 1530 1531 1532 1533 1534 1535
			((response_t *)pkt)->signature = RESPONSE_PROCESSED;
			wmb();
			continue;
		}

		switch (pkt->entry_type) {
		case STATUS_TYPE:
1536
			qla2x00_status_entry(vha, rsp, pkt);
1537 1538
			break;
		case STATUS_CONT_TYPE:
1539
			qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1540
			break;
1541
		case VP_RPT_ID_IOCB_TYPE:
1542
			qla24xx_report_id_acquisition(vha,
1543 1544
			    (struct vp_rpt_id_entry_24xx *)pkt);
			break;
1545 1546 1547 1548 1549
		default:
			/* Type Not Supported. */
			DEBUG4(printk(KERN_WARNING
			    "scsi(%ld): Received unknown response pkt type %x "
			    "entry status=%x.\n",
1550
			    vha->host_no, pkt->entry_type, pkt->entry_status));
1551 1552 1553 1554 1555 1556 1557
			break;
		}
		((response_t *)pkt)->signature = RESPONSE_PROCESSED;
		wmb();
	}

	/* Adjust ring index */
1558
	WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1559 1560
}

1561
static void
1562
qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1563 1564 1565
{
	int rval;
	uint32_t cnt;
1566
	struct qla_hw_data *ha = vha->hw;
1567 1568
	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

1569
	if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
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 1603 1604 1605 1606 1607
		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);
}

1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
/**
 * 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
1618
qla24xx_intr_handler(int irq, void *dev_id)
1619
{
1620 1621
	scsi_qla_host_t	*vha;
	struct qla_hw_data *ha;
1622 1623 1624 1625 1626 1627
	struct device_reg_24xx __iomem *reg;
	int		status;
	unsigned long	iter;
	uint32_t	stat;
	uint32_t	hccr;
	uint16_t	mb[4];
1628
	struct rsp_que *rsp;
1629

1630 1631
	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
1632
		printk(KERN_INFO
1633
		    "%s(): NULL response queue pointer\n", __func__);
1634 1635 1636
		return IRQ_NONE;
	}

1637
	ha = rsp->hw;
1638 1639 1640
	reg = &ha->iobase->isp24;
	status = 0;

1641
	spin_lock(&ha->hardware_lock);
1642
	vha = pci_get_drvdata(ha->pdev);
1643 1644 1645
	for (iter = 50; iter--; ) {
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
1646 1647 1648
			if (pci_channel_offline(ha->pdev))
				break;

1649 1650 1651 1652
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
1653

1654
			qla2xxx_check_risc_status(vha);
1655

1656 1657
			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1658 1659 1660 1661 1662 1663 1664 1665 1666
			break;
		} else if ((stat & HSRX_RISC_INT) == 0)
			break;

		switch (stat & 0xff) {
		case 0x1:
		case 0x2:
		case 0x10:
		case 0x11:
1667
			qla24xx_mbx_completion(vha, MSW(stat));
1668 1669 1670 1671 1672 1673 1674 1675
			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);
1676
			qla2x00_async_event(vha, rsp, mb);
1677 1678
			break;
		case 0x13:
1679
		case 0x14:
1680
			qla24xx_process_response_queue(vha, rsp);
1681 1682 1683 1684
			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
			    "(%d).\n",
1685
			    vha->host_no, stat & 0xff));
1686 1687 1688 1689 1690
			break;
		}
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
		RD_REG_DWORD_RELAXED(&reg->hccr);
	}
1691
	spin_unlock(&ha->hardware_lock);
1692 1693 1694 1695

	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);
1696
		complete(&ha->mbx_intr_comp);
1697 1698 1699 1700 1701
	}

	return IRQ_HANDLED;
}

1702 1703 1704
static irqreturn_t
qla24xx_msix_rsp_q(int irq, void *dev_id)
{
1705 1706
	struct qla_hw_data *ha;
	struct rsp_que *rsp;
1707
	struct device_reg_24xx __iomem *reg;
1708
	struct scsi_qla_host *vha;
1709

1710 1711 1712 1713 1714 1715 1716
	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
		printk(KERN_INFO
		"%s(): NULL response queue pointer\n", __func__);
		return IRQ_NONE;
	}
	ha = rsp->hw;
1717 1718
	reg = &ha->iobase->isp24;

1719
	spin_lock_irq(&ha->hardware_lock);
1720

1721 1722
	vha = qla25xx_get_host(rsp);
	qla24xx_process_response_queue(vha, rsp);
1723 1724
	WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);

1725
	spin_unlock_irq(&ha->hardware_lock);
1726 1727 1728 1729

	return IRQ_HANDLED;
}

1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748
static irqreturn_t
qla25xx_msix_rsp_q(int irq, void *dev_id)
{
	struct qla_hw_data *ha;
	struct rsp_que *rsp;

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

	queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);

	return IRQ_HANDLED;
}

1749 1750 1751
static irqreturn_t
qla24xx_msix_default(int irq, void *dev_id)
{
1752 1753 1754
	scsi_qla_host_t	*vha;
	struct qla_hw_data *ha;
	struct rsp_que *rsp;
1755 1756 1757 1758 1759 1760
	struct device_reg_24xx __iomem *reg;
	int		status;
	uint32_t	stat;
	uint32_t	hccr;
	uint16_t	mb[4];

1761 1762 1763 1764 1765 1766 1767
	rsp = (struct rsp_que *) dev_id;
	if (!rsp) {
		DEBUG(printk(
		"%s(): NULL response queue pointer\n", __func__));
		return IRQ_NONE;
	}
	ha = rsp->hw;
1768 1769 1770
	reg = &ha->iobase->isp24;
	status = 0;

1771
	spin_lock_irq(&ha->hardware_lock);
1772
	vha = pci_get_drvdata(ha->pdev);
1773
	do {
1774 1775
		stat = RD_REG_DWORD(&reg->host_status);
		if (stat & HSRX_RISC_PAUSED) {
1776 1777 1778
			if (pci_channel_offline(ha->pdev))
				break;

1779 1780 1781 1782
			hccr = RD_REG_DWORD(&reg->hccr);

			qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
			    "Dumping firmware!\n", hccr);
1783

1784
			qla2xxx_check_risc_status(vha);
1785

1786 1787
			ha->isp_ops->fw_dump(vha, 1);
			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1788 1789 1790 1791 1792 1793 1794 1795 1796
			break;
		} else if ((stat & HSRX_RISC_INT) == 0)
			break;

		switch (stat & 0xff) {
		case 0x1:
		case 0x2:
		case 0x10:
		case 0x11:
1797
			qla24xx_mbx_completion(vha, MSW(stat));
1798 1799 1800 1801 1802 1803 1804 1805
			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);
1806
			qla2x00_async_event(vha, rsp, mb);
1807 1808
			break;
		case 0x13:
1809
		case 0x14:
1810
			qla24xx_process_response_queue(vha, rsp);
1811 1812 1813 1814
			break;
		default:
			DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
			    "(%d).\n",
1815
			    vha->host_no, stat & 0xff));
1816 1817 1818
			break;
		}
		WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1819
	} while (0);
1820
	spin_unlock_irq(&ha->hardware_lock);
1821 1822 1823 1824

	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);
1825
		complete(&ha->mbx_intr_comp);
1826 1827 1828 1829 1830 1831 1832 1833 1834
	}

	return IRQ_HANDLED;
}

/* Interrupt handling helpers. */

struct qla_init_msix_entry {
	const char *name;
1835
	irq_handler_t handler;
1836 1837
};

1838
static struct qla_init_msix_entry msix_entries[3] = {
1839 1840
	{ "qla2xxx (default)", qla24xx_msix_default },
	{ "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1841
	{ "qla2xxx (multiq)", qla25xx_msix_rsp_q },
1842 1843 1844
};

static void
1845
qla24xx_disable_msix(struct qla_hw_data *ha)
1846 1847 1848 1849
{
	int i;
	struct qla_msix_entry *qentry;

1850 1851
	for (i = 0; i < ha->msix_count; i++) {
		qentry = &ha->msix_entries[i];
1852
		if (qentry->have_irq)
1853
			free_irq(qentry->vector, qentry->rsp);
1854 1855
	}
	pci_disable_msix(ha->pdev);
1856 1857 1858
	kfree(ha->msix_entries);
	ha->msix_entries = NULL;
	ha->flags.msix_enabled = 0;
1859 1860 1861
}

static int
1862
qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1863
{
1864
#define MIN_MSIX_COUNT	2
1865
	int i, ret;
1866
	struct msix_entry *entries;
1867
	struct qla_msix_entry *qentry;
1868 1869 1870 1871 1872

	entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
					GFP_KERNEL);
	if (!entries)
		return -ENOMEM;
1873

1874 1875
	for (i = 0; i < ha->msix_count; i++)
		entries[i].entry = i;
1876

1877
	ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1878
	if (ret) {
1879 1880 1881
		if (ret < MIN_MSIX_COUNT)
			goto msix_failed;

1882
		qla_printk(KERN_WARNING, ha,
1883 1884 1885 1886 1887
			"MSI-X: Failed to enable support -- %d/%d\n"
			" Retry with %d vectors\n", ha->msix_count, ret, ret);
		ha->msix_count = ret;
		ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
		if (ret) {
1888
msix_failed:
1889 1890 1891 1892 1893
			qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
				" support, giving up -- %d/%d\n",
				ha->msix_count, ret);
			goto msix_out;
		}
1894
		ha->max_rsp_queues = ha->msix_count - 1;
1895 1896 1897 1898 1899
	}
	ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
				ha->msix_count, GFP_KERNEL);
	if (!ha->msix_entries) {
		ret = -ENOMEM;
1900 1901 1902 1903
		goto msix_out;
	}
	ha->flags.msix_enabled = 1;

1904 1905 1906 1907
	for (i = 0; i < ha->msix_count; i++) {
		qentry = &ha->msix_entries[i];
		qentry->vector = entries[i].vector;
		qentry->entry = entries[i].entry;
1908
		qentry->have_irq = 0;
1909
		qentry->rsp = NULL;
1910 1911
	}

1912 1913 1914 1915 1916 1917 1918
	/* Enable MSI-X vectors for the base queue */
	for (i = 0; i < 2; i++) {
		qentry = &ha->msix_entries[i];
		ret = request_irq(qentry->vector, msix_entries[i].handler,
					0, msix_entries[i].name, rsp);
		if (ret) {
			qla_printk(KERN_WARNING, ha,
1919 1920
			"MSI-X: Unable to register handler -- %x/%d.\n",
			qentry->vector, ret);
1921 1922 1923 1924 1925 1926 1927
			qla24xx_disable_msix(ha);
			ha->mqenable = 0;
			goto msix_out;
		}
		qentry->have_irq = 1;
		qentry->rsp = rsp;
		rsp->msix = qentry;
1928 1929 1930
	}

	/* Enable MSI-X vector for response queue update for queue 0 */
1931
	if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
1932 1933
		ha->mqenable = 1;

1934
msix_out:
1935
	kfree(entries);
1936 1937 1938 1939
	return ret;
}

int
1940
qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
1941 1942
{
	int ret;
1943
	device_reg_t __iomem *reg = ha->iobase;
1944 1945

	/* If possible, enable MSI-X. */
1946 1947
	if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
	    !IS_QLA8432(ha) && !IS_QLA8001(ha))
1948 1949
		goto skip_msix;

1950 1951
	if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
		!QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1952
		DEBUG2(qla_printk(KERN_WARNING, ha,
1953 1954
		"MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
			ha->pdev->revision, ha->fw_attributes));
1955 1956 1957 1958

		goto skip_msix;
	}

1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
	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;
	}

1971
	ret = qla24xx_enable_msix(ha, rsp);
1972 1973 1974 1975
	if (!ret) {
		DEBUG2(qla_printk(KERN_INFO, ha,
		    "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
		    ha->fw_attributes));
1976
		goto clear_risc_ints;
1977 1978 1979 1980
	}
	qla_printk(KERN_WARNING, ha,
	    "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
skip_msix:
1981

1982 1983
	if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
	    !IS_QLA8001(ha))
1984 1985 1986 1987 1988 1989 1990 1991 1992
		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:

1993
	ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1994
	    IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
1995
	if (ret) {
1996 1997 1998
		qla_printk(KERN_WARNING, ha,
		    "Failed to reserve interrupt %d already in use.\n",
		    ha->pdev->irq);
1999 2000 2001 2002 2003
		goto fail;
	}
	ha->flags.inta_enabled = 1;
clear_risc_ints:

2004 2005 2006 2007 2008 2009
	/*
	 * FIXME: Noted that 8014s were being dropped during NK testing.
	 * Timing deltas during MSI-X/INTa transitions?
	 */
	if (IS_QLA81XX(ha))
		goto fail;
2010
	spin_lock_irq(&ha->hardware_lock);
2011 2012 2013 2014 2015 2016 2017
	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);
2018
	}
2019
	spin_unlock_irq(&ha->hardware_lock);
2020

2021
fail:
2022 2023 2024 2025
	return ret;
}

void
2026
qla2x00_free_irqs(scsi_qla_host_t *vha)
2027
{
2028
	struct qla_hw_data *ha = vha->hw;
2029
	struct rsp_que *rsp = ha->rsp_q_map[0];
2030 2031 2032

	if (ha->flags.msix_enabled)
		qla24xx_disable_msix(ha);
2033
	else if (ha->flags.inta_enabled) {
2034
		free_irq(ha->pdev->irq, rsp);
2035 2036
		pci_disable_msi(ha->pdev);
	}
2037
}
2038

2039 2040 2041 2042

int qla25xx_request_irq(struct rsp_que *rsp)
{
	struct qla_hw_data *ha = rsp->hw;
2043
	struct qla_init_msix_entry *intr = &msix_entries[2];
2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057
	struct qla_msix_entry *msix = rsp->msix;
	int ret;

	ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
	if (ret) {
		qla_printk(KERN_WARNING, ha,
			"MSI-X: Unable to register handler -- %x/%d.\n",
			msix->vector, ret);
		return ret;
	}
	msix->have_irq = 1;
	msix->rsp = rsp;
	return ret;
}
2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084

struct scsi_qla_host *
qla25xx_get_host(struct rsp_que *rsp)
{
	srb_t *sp;
	struct qla_hw_data *ha = rsp->hw;
	struct scsi_qla_host *vha = NULL;
	struct sts_entry_24xx *pkt;
	struct req_que *req;
	uint16_t que;
	uint32_t handle;

	pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
	que = MSW(pkt->handle);
	handle = (uint32_t) LSW(pkt->handle);
	req = ha->req_q_map[que];
	if (handle < MAX_OUTSTANDING_COMMANDS) {
		sp = req->outstanding_cmds[handle];
		if (sp)
			return  sp->fcport->vha;
		else
			goto base_que;
	}
base_que:
	vha = pci_get_drvdata(ha->pdev);
	return vha;
}