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path: root/drivers/scsi/qla4xxx/ql4_isr.c
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Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_isr.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_isr.c396
1 files changed, 329 insertions, 67 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
index 596c3031483..aa65697a86b 100644
--- a/drivers/scsi/qla4xxx/ql4_isr.c
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -118,13 +118,12 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha,
srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
if (!srb) {
- /* FIXMEdg: Don't we need to reset ISP in this case??? */
DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid "
"handle 0x%x, sp=%p. This cmd may have already "
"been completed.\n", ha->host_no, __func__,
le32_to_cpu(sts_entry->handle), srb));
- dev_warn(&ha->pdev->dev, "%s invalid status entry:"
- " handle=0x%0x\n", __func__, sts_entry->handle);
+ ql4_printk(KERN_WARNING, ha, "%s invalid status entry:"
+ " handle=0x%0x\n", __func__, sts_entry->handle);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
return;
}
@@ -135,8 +134,8 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha,
"OS pkt->handle=%d srb=%p srb->state:%d\n",
ha->host_no, __func__, sts_entry->handle,
srb, srb->state));
- dev_warn(&ha->pdev->dev, "Command is NULL:"
- " already returned to OS (srb=%p)\n", srb);
+ ql4_printk(KERN_WARNING, ha, "Command is NULL:"
+ " already returned to OS (srb=%p)\n", srb);
return;
}
@@ -293,6 +292,10 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha,
case SCS_DEVICE_LOGGED_OUT:
case SCS_DEVICE_UNAVAILABLE:
+ DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: SCS_DEVICE "
+ "state: 0x%x\n", ha->host_no,
+ cmd->device->channel, cmd->device->id,
+ cmd->device->lun, sts_entry->completionStatus));
/*
* Mark device missing so that we won't continue to
* send I/O to this device. We should get a ddb
@@ -339,16 +342,14 @@ status_entry_exit:
* This routine process response queue completions in interrupt context.
* Hardware_lock locked upon entry
**/
-static void qla4xxx_process_response_queue(struct scsi_qla_host * ha)
+void qla4xxx_process_response_queue(struct scsi_qla_host *ha)
{
uint32_t count = 0;
struct srb *srb = NULL;
struct status_entry *sts_entry;
/* Process all responses from response queue */
- while ((ha->response_in =
- (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in)) !=
- ha->response_out) {
+ while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) {
sts_entry = (struct status_entry *) ha->response_ptr;
count++;
@@ -413,14 +414,14 @@ static void qla4xxx_process_response_queue(struct scsi_qla_host * ha)
sts_entry->hdr.entryType));
goto exit_prq_error;
}
+ ((struct response *)sts_entry)->signature = RESPONSE_PROCESSED;
+ wmb();
}
/*
- * Done with responses, update the ISP For QLA4010, this also clears
- * the interrupt.
+ * Tell ISP we're done with response(s). This also clears the interrupt.
*/
- writel(ha->response_out, &ha->reg->rsp_q_out);
- readl(&ha->reg->rsp_q_out);
+ ha->isp_ops->complete_iocb(ha);
return;
@@ -430,9 +431,7 @@ exit_prq_invalid_handle:
sts_entry->completionStatus));
exit_prq_error:
- writel(ha->response_out, &ha->reg->rsp_q_out);
- readl(&ha->reg->rsp_q_out);
-
+ ha->isp_ops->complete_iocb(ha);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
}
@@ -448,7 +447,7 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
uint32_t mbox_status)
{
int i;
- uint32_t mbox_stat2, mbox_stat3;
+ uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
if ((mbox_status == MBOX_STS_BUSY) ||
(mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) ||
@@ -460,27 +459,37 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
* Copy all mailbox registers to a temporary
* location and set mailbox command done flag
*/
- for (i = 1; i < ha->mbox_status_count; i++)
- ha->mbox_status[i] =
- readl(&ha->reg->mailbox[i]);
+ for (i = 0; i < ha->mbox_status_count; i++)
+ ha->mbox_status[i] = is_qla8022(ha)
+ ? readl(&ha->qla4_8xxx_reg->mailbox_out[i])
+ : readl(&ha->reg->mailbox[i]);
set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+
+ if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags))
+ complete(&ha->mbx_intr_comp);
}
} else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
+ for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
+ mbox_sts[i] = is_qla8022(ha)
+ ? readl(&ha->qla4_8xxx_reg->mailbox_out[i])
+ : readl(&ha->reg->mailbox[i]);
+
/* Immediately process the AENs that don't require much work.
* Only queue the database_changed AENs */
if (ha->aen_log.count < MAX_AEN_ENTRIES) {
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] =
- readl(&ha->reg->mailbox[i]);
+ mbox_sts[i];
ha->aen_log.count++;
}
switch (mbox_status) {
case MBOX_ASTS_SYSTEM_ERROR:
/* Log Mailbox registers */
+ ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__);
if (ql4xdontresethba) {
- DEBUG2(printk("%s:Dont Reset HBA\n",
- __func__));
+ DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n",
+ ha->host_no, __func__));
} else {
set_bit(AF_GET_CRASH_RECORD, &ha->flags);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
@@ -502,18 +511,15 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
if (test_bit(AF_INIT_DONE, &ha->flags))
set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
- DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x Adapter"
- " LINK UP\n", ha->host_no,
- mbox_status));
+ ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__);
break;
case MBOX_ASTS_LINK_DOWN:
clear_bit(AF_LINK_UP, &ha->flags);
- set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
+ if (test_bit(AF_INIT_DONE, &ha->flags))
+ set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
- DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x Adapter"
- " LINK DOWN\n", ha->host_no,
- mbox_status));
+ ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__);
break;
case MBOX_ASTS_HEARTBEAT:
@@ -539,12 +545,17 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
break;
case MBOX_ASTS_IP_ADDR_STATE_CHANGED:
- mbox_stat2 = readl(&ha->reg->mailbox[2]);
- mbox_stat3 = readl(&ha->reg->mailbox[3]);
-
- if ((mbox_stat3 == 5) && (mbox_stat2 == 3))
+ printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, "
+ "mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0],
+ mbox_sts[2], mbox_sts[3]);
+
+ /* mbox_sts[2] = Old ACB state
+ * mbox_sts[3] = new ACB state */
+ if ((mbox_sts[3] == ACB_STATE_VALID) &&
+ (mbox_sts[2] == ACB_STATE_TENTATIVE))
set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
- else if ((mbox_stat3 == 2) && (mbox_stat2 == 5))
+ else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) &&
+ (mbox_sts[2] == ACB_STATE_VALID))
set_bit(DPC_RESET_HA, &ha->dpc_flags);
break;
@@ -553,9 +564,8 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
/* No action */
DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, "
"mbox_sts[1]=%04x, mbox_sts[2]=%04x\n",
- ha->host_no, mbox_status,
- readl(&ha->reg->mailbox[1]),
- readl(&ha->reg->mailbox[2])));
+ ha->host_no, mbox_sts[0],
+ mbox_sts[1], mbox_sts[2]));
break;
case MBOX_ASTS_SELF_TEST_FAILED:
@@ -563,10 +573,8 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
/* No action */
DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, "
"mbox_sts[2]=%04x, mbox_sts[3]=%04x\n",
- ha->host_no, mbox_status,
- readl(&ha->reg->mailbox[1]),
- readl(&ha->reg->mailbox[2]),
- readl(&ha->reg->mailbox[3])));
+ ha->host_no, mbox_sts[0], mbox_sts[1],
+ mbox_sts[2], mbox_sts[3]));
break;
case MBOX_ASTS_DATABASE_CHANGED:
@@ -577,21 +585,17 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
/* decrement available counter */
ha->aen_q_count--;
- for (i = 1; i < MBOX_AEN_REG_COUNT; i++)
+ for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
ha->aen_q[ha->aen_in].mbox_sts[i] =
- readl(&ha->reg->mailbox[i]);
-
- ha->aen_q[ha->aen_in].mbox_sts[0] = mbox_status;
+ mbox_sts[i];
/* print debug message */
DEBUG2(printk("scsi%ld: AEN[%d] %04x queued"
- " mb1:0x%x mb2:0x%x mb3:0x%x mb4:0x%x\n",
- ha->host_no, ha->aen_in,
- mbox_status,
- ha->aen_q[ha->aen_in].mbox_sts[1],
- ha->aen_q[ha->aen_in].mbox_sts[2],
- ha->aen_q[ha->aen_in].mbox_sts[3],
- ha->aen_q[ha->aen_in]. mbox_sts[4]));
+ " mb1:0x%x mb2:0x%x mb3:0x%x mb4:0x%x\n",
+ ha->host_no, ha->aen_in, mbox_sts[0],
+ mbox_sts[1], mbox_sts[2], mbox_sts[3],
+ mbox_sts[4]));
+
/* advance pointer */
ha->aen_in++;
if (ha->aen_in == MAX_AEN_ENTRIES)
@@ -603,18 +607,16 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
DEBUG2(printk("scsi%ld: %s: aen %04x, queue "
"overflowed! AEN LOST!!\n",
ha->host_no, __func__,
- mbox_status));
+ mbox_sts[0]));
DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n",
ha->host_no));
for (i = 0; i < MAX_AEN_ENTRIES; i++) {
DEBUG2(printk("AEN[%d] %04x %04x %04x "
- "%04x\n", i,
- ha->aen_q[i].mbox_sts[0],
- ha->aen_q[i].mbox_sts[1],
- ha->aen_q[i].mbox_sts[2],
- ha->aen_q[i].mbox_sts[3]));
+ "%04x\n", i, mbox_sts[0],
+ mbox_sts[1], mbox_sts[2],
+ mbox_sts[3]));
}
}
break;
@@ -622,7 +624,7 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
default:
DEBUG2(printk(KERN_WARNING
"scsi%ld: AEN %04x UNKNOWN\n",
- ha->host_no, mbox_status));
+ ha->host_no, mbox_sts[0]));
break;
}
} else {
@@ -634,6 +636,30 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
}
/**
+ * qla4_8xxx_interrupt_service_routine - isr
+ * @ha: pointer to host adapter structure.
+ *
+ * This is the main interrupt service routine.
+ * hardware_lock locked upon entry. runs in interrupt context.
+ **/
+void qla4_8xxx_interrupt_service_routine(struct scsi_qla_host *ha,
+ uint32_t intr_status)
+{
+ /* Process response queue interrupt. */
+ if (intr_status & HSRX_RISC_IOCB_INT)
+ qla4xxx_process_response_queue(ha);
+
+ /* Process mailbox/asynch event interrupt.*/
+ if (intr_status & HSRX_RISC_MB_INT)
+ qla4xxx_isr_decode_mailbox(ha,
+ readl(&ha->qla4_8xxx_reg->mailbox_out[0]));
+
+ /* clear the interrupt */
+ writel(0, &ha->qla4_8xxx_reg->host_int);
+ readl(&ha->qla4_8xxx_reg->host_int);
+}
+
+/**
* qla4xxx_interrupt_service_routine - isr
* @ha: pointer to host adapter structure.
*
@@ -660,6 +686,28 @@ void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,
}
/**
+ * qla4_8xxx_spurious_interrupt - processes spurious interrupt
+ * @ha: pointer to host adapter structure.
+ * @reqs_count: .
+ *
+ **/
+static void qla4_8xxx_spurious_interrupt(struct scsi_qla_host *ha,
+ uint8_t reqs_count)
+{
+ if (reqs_count)
+ return;
+
+ DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n"));
+ if (is_qla8022(ha)) {
+ writel(0, &ha->qla4_8xxx_reg->host_int);
+ if (test_bit(AF_INTx_ENABLED, &ha->flags))
+ qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg,
+ 0xfbff);
+ }
+ ha->spurious_int_count++;
+}
+
+/**
* qla4xxx_intr_handler - hardware interrupt handler.
* @irq: Unused
* @dev_id: Pointer to host adapter structure
@@ -689,15 +737,14 @@ irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id)
/*
* Read interrupt status
*/
- if (le32_to_cpu(ha->shadow_regs->rsp_q_in) !=
+ if (ha->isp_ops->rd_shdw_rsp_q_in(ha) !=
ha->response_out)
intr_status = CSR_SCSI_COMPLETION_INTR;
else
intr_status = readl(&ha->reg->ctrl_status);
if ((intr_status &
- (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) ==
- 0) {
+ (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == 0) {
if (reqs_count == 0)
ha->spurious_int_count++;
break;
@@ -739,22 +786,159 @@ irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id)
&ha->reg->ctrl_status);
readl(&ha->reg->ctrl_status);
- if (!ql4_mod_unload)
+ if (!test_bit(AF_HBA_GOING_AWAY, &ha->flags))
set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
break;
} else if (intr_status & INTR_PENDING) {
- qla4xxx_interrupt_service_routine(ha, intr_status);
+ ha->isp_ops->interrupt_service_routine(ha, intr_status);
ha->total_io_count++;
if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
break;
+ }
+ }
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * qla4_8xxx_intr_handler - hardware interrupt handler.
+ * @irq: Unused
+ * @dev_id: Pointer to host adapter structure
+ **/
+irqreturn_t qla4_8xxx_intr_handler(int irq, void *dev_id)
+{
+ struct scsi_qla_host *ha = dev_id;
+ uint32_t intr_status;
+ uint32_t status;
+ unsigned long flags = 0;
+ uint8_t reqs_count = 0;
+
+ ha->isr_count++;
+ status = qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
+ if (!(status & ha->nx_legacy_intr.int_vec_bit))
+ return IRQ_NONE;
+
+ status = qla4_8xxx_rd_32(ha, ISR_INT_STATE_REG);
+ if (!ISR_IS_LEGACY_INTR_TRIGGERED(status)) {
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "%s legacy Int not triggered\n", __func__));
+ return IRQ_NONE;
+ }
+
+ /* clear the interrupt */
+ qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff);
+
+ /* read twice to ensure write is flushed */
+ qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
+ qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ while (1) {
+ if (!(readl(&ha->qla4_8xxx_reg->host_int) &
+ ISRX_82XX_RISC_INT)) {
+ qla4_8xxx_spurious_interrupt(ha, reqs_count);
+ break;
+ }
+ intr_status = readl(&ha->qla4_8xxx_reg->host_status);
+ if ((intr_status &
+ (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) {
+ qla4_8xxx_spurious_interrupt(ha, reqs_count);
+ break;
+ }
+
+ ha->isp_ops->interrupt_service_routine(ha, intr_status);
+
+ /* Enable Interrupt */
+ qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff);
- intr_status = 0;
+ if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
+ break;
+ }
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return IRQ_HANDLED;
+}
+
+irqreturn_t
+qla4_8xxx_msi_handler(int irq, void *dev_id)
+{
+ struct scsi_qla_host *ha;
+
+ ha = (struct scsi_qla_host *) dev_id;
+ if (!ha) {
+ DEBUG2(printk(KERN_INFO
+ "qla4xxx: MSIX: Interrupt with NULL host ptr\n"));
+ return IRQ_NONE;
+ }
+
+ ha->isr_count++;
+ /* clear the interrupt */
+ qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff);
+
+ /* read twice to ensure write is flushed */
+ qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
+ qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
+
+ return qla4_8xxx_default_intr_handler(irq, dev_id);
+}
+
+/**
+ * qla4_8xxx_default_intr_handler - hardware interrupt handler.
+ * @irq: Unused
+ * @dev_id: Pointer to host adapter structure
+ *
+ * This interrupt handler is called directly for MSI-X, and
+ * called indirectly for MSI.
+ **/
+irqreturn_t
+qla4_8xxx_default_intr_handler(int irq, void *dev_id)
+{
+ struct scsi_qla_host *ha = dev_id;
+ unsigned long flags;
+ uint32_t intr_status;
+ uint8_t reqs_count = 0;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ while (1) {
+ if (!(readl(&ha->qla4_8xxx_reg->host_int) &
+ ISRX_82XX_RISC_INT)) {
+ qla4_8xxx_spurious_interrupt(ha, reqs_count);
+ break;
+ }
+
+ intr_status = readl(&ha->qla4_8xxx_reg->host_status);
+ if ((intr_status &
+ (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) {
+ qla4_8xxx_spurious_interrupt(ha, reqs_count);
+ break;
}
+
+ ha->isp_ops->interrupt_service_routine(ha, intr_status);
+
+ if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
+ break;
}
+ ha->isr_count++;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return IRQ_HANDLED;
+}
+irqreturn_t
+qla4_8xxx_msix_rsp_q(int irq, void *dev_id)
+{
+ struct scsi_qla_host *ha = dev_id;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla4xxx_process_response_queue(ha);
+ writel(0, &ha->qla4_8xxx_reg->host_int);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ ha->isr_count++;
return IRQ_HANDLED;
}
@@ -825,7 +1009,7 @@ void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen)
((ddb_entry->default_time2wait +
4) * HZ);
- DEBUG2(printk("scsi%ld: ddb index [%d] initate"
+ DEBUG2(printk("scsi%ld: ddb [%d] initate"
" RELOGIN after %d seconds\n",
ha->host_no,
ddb_entry->fw_ddb_index,
@@ -847,3 +1031,81 @@ void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
+int qla4xxx_request_irqs(struct scsi_qla_host *ha)
+{
+ int ret;
+
+ if (!is_qla8022(ha))
+ goto try_intx;
+
+ if (ql4xenablemsix == 2)
+ goto try_msi;
+
+ if (ql4xenablemsix == 0 || ql4xenablemsix != 1)
+ goto try_intx;
+
+ /* Trying MSI-X */
+ ret = qla4_8xxx_enable_msix(ha);
+ if (!ret) {
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "MSI-X: Enabled (0x%X).\n", ha->revision_id));
+ goto irq_attached;
+ }
+
+ ql4_printk(KERN_WARNING, ha,
+ "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
+
+try_msi:
+ /* Trying MSI */
+ ret = pci_enable_msi(ha->pdev);
+ if (!ret) {
+ ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler,
+ IRQF_DISABLED|IRQF_SHARED, DRIVER_NAME, ha);
+ if (!ret) {
+ DEBUG2(ql4_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
+ set_bit(AF_MSI_ENABLED, &ha->flags);
+ goto irq_attached;
+ } else {
+ ql4_printk(KERN_WARNING, ha,
+ "MSI: Failed to reserve interrupt %d "
+ "already in use.\n", ha->pdev->irq);
+ pci_disable_msi(ha->pdev);
+ }
+ }
+ ql4_printk(KERN_WARNING, ha,
+ "MSI: Falling back-to INTx mode -- %d.\n", ret);
+
+try_intx:
+ /* Trying INTx */
+ ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
+ IRQF_DISABLED|IRQF_SHARED, DRIVER_NAME, ha);
+ if (!ret) {
+ DEBUG2(ql4_printk(KERN_INFO, ha, "INTx: Enabled.\n"));
+ set_bit(AF_INTx_ENABLED, &ha->flags);
+ goto irq_attached;
+
+ } else {
+ ql4_printk(KERN_WARNING, ha,
+ "INTx: Failed to reserve interrupt %d already in"
+ " use.\n", ha->pdev->irq);
+ return ret;
+ }
+
+irq_attached:
+ set_bit(AF_IRQ_ATTACHED, &ha->flags);
+ ha->host->irq = ha->pdev->irq;
+ ql4_printk(KERN_INFO, ha, "%s: irq %d attached\n",
+ __func__, ha->pdev->irq);
+ return ret;
+}
+
+void qla4xxx_free_irqs(struct scsi_qla_host *ha)
+{
+ if (test_bit(AF_MSIX_ENABLED, &ha->flags))
+ qla4_8xxx_disable_msix(ha);
+ else if (test_and_clear_bit(AF_MSI_ENABLED, &ha->flags)) {
+ free_irq(ha->pdev->irq, ha);
+ pci_disable_msi(ha->pdev);
+ } else if (test_and_clear_bit(AF_INTx_ENABLED, &ha->flags))
+ free_irq(ha->pdev->irq, ha);
+}