And simplify the MSI-X logic in general - just request the two
vectors directly instead of going through an indirection table.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/scsi/qla4xxx/ql4_def.h | 18 +--------
drivers/scsi/qla4xxx/ql4_glbl.h | 1 -
drivers/scsi/qla4xxx/ql4_isr.c | 27 +++++--------
drivers/scsi/qla4xxx/ql4_nx.c | 89 +++++++++++------------------------------
4 files changed, 37 insertions(+), 98 deletions(-)
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
index a7cfc27..aeebefb 100644
--- a/drivers/scsi/qla4xxx/ql4_def.h
+++ b/drivers/scsi/qla4xxx/ql4_def.h
@@ -409,18 +409,9 @@ struct qla4_8xxx_legacy_intr_set {
/* MSI-X Support */
-#define QLA_MSIX_DEFAULT 0x00
-#define QLA_MSIX_RSP_Q 0x01
-
+#define QLA_MSIX_DEFAULT 0
+#define QLA_MSIX_RSP_Q 1
#define QLA_MSIX_ENTRIES 2
-#define QLA_MIDX_DEFAULT 0
-#define QLA_MIDX_RSP_Q 1
-
-struct ql4_msix_entry {
- int have_irq;
- uint16_t msix_vector;
- uint16_t msix_entry;
-};
/*
* ISP Operations
@@ -572,9 +563,6 @@ struct scsi_qla_host {
#define AF_IRQ_ATTACHED 10 /* 0x00000400 */
#define AF_DISABLE_ACB_COMPLETE 11 /* 0x00000800 */
#define AF_HA_REMOVAL 12 /* 0x00001000 */
-#define AF_INTx_ENABLED 15 /* 0x00008000 */
-#define AF_MSI_ENABLED 16 /* 0x00010000 */
-#define AF_MSIX_ENABLED 17 /* 0x00020000 */
#define AF_MBOX_COMMAND_NOPOLL 18 /* 0x00040000 */
#define AF_FW_RECOVERY 19 /* 0x00080000 */
#define AF_EEH_BUSY 20 /* 0x00100000 */
@@ -762,8 +750,6 @@ struct scsi_qla_host {
struct isp_operations *isp_ops;
struct ql82xx_hw_data hw;
- struct ql4_msix_entry msix_entries[QLA_MSIX_ENTRIES];
-
uint32_t nx_dev_init_timeout;
uint32_t nx_reset_timeout;
void *fw_dump;
diff --git a/drivers/scsi/qla4xxx/ql4_glbl.h b/drivers/scsi/qla4xxx/ql4_glbl.h
index 2559144..bce96a5 100644
--- a/drivers/scsi/qla4xxx/ql4_glbl.h
+++ b/drivers/scsi/qla4xxx/ql4_glbl.h
@@ -134,7 +134,6 @@ int qla4_8xxx_get_flash_info(struct scsi_qla_host *ha);
void qla4_82xx_enable_intrs(struct scsi_qla_host *ha);
void qla4_82xx_disable_intrs(struct scsi_qla_host *ha);
int qla4_8xxx_enable_msix(struct scsi_qla_host *ha);
-void qla4_8xxx_disable_msix(struct scsi_qla_host *ha);
irqreturn_t qla4_8xxx_msi_handler(int irq, void *dev_id);
irqreturn_t qla4_8xxx_default_intr_handler(int irq, void *dev_id);
irqreturn_t qla4_8xxx_msix_rsp_q(int irq, void *dev_id);
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
index 4f9c0f2..d2cd33d 100644
--- a/drivers/scsi/qla4xxx/ql4_isr.c
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -1107,7 +1107,7 @@ static void qla4_82xx_spurious_interrupt(struct scsi_qla_host *ha,
DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n"));
if (is_qla8022(ha)) {
writel(0, &ha->qla4_82xx_reg->host_int);
- if (test_bit(AF_INTx_ENABLED, &ha->flags))
+ if (!ha->pdev->msi_enabled && !ha->pdev->msix_enabled)
qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg,
0xfbff);
}
@@ -1564,19 +1564,18 @@ int qla4xxx_request_irqs(struct scsi_qla_host *ha)
try_msi:
/* Trying MSI */
- ret = pci_enable_msi(ha->pdev);
- if (!ret) {
+ ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
+ if (ret > 0) {
ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler,
0, 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);
+ pci_free_irq_vectors(ha->pdev);
}
}
@@ -1592,7 +1591,6 @@ int qla4xxx_request_irqs(struct scsi_qla_host *ha)
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 {
@@ -1614,14 +1612,11 @@ int qla4xxx_request_irqs(struct scsi_qla_host *ha)
void qla4xxx_free_irqs(struct scsi_qla_host *ha)
{
- if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) {
- 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);
- }
- }
+ if (!test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
+ return;
+
+ if (ha->pdev->msix_enabled)
+ free_irq(pci_irq_vector(ha->pdev, 1), ha);
+ free_irq(pci_irq_vector(ha->pdev, 0), ha);
+ pci_free_irq_vectors(ha->pdev);
}
diff --git a/drivers/scsi/qla4xxx/ql4_nx.c b/drivers/scsi/qla4xxx/ql4_nx.c
index bccd8b6..e91abb3 100644
--- a/drivers/scsi/qla4xxx/ql4_nx.c
+++ b/drivers/scsi/qla4xxx/ql4_nx.c
@@ -3945,7 +3945,7 @@ void qla4_82xx_process_mbox_intr(struct scsi_qla_host *ha, int out_count)
ha->isp_ops->interrupt_service_routine(ha, intr_status);
if (test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
- test_bit(AF_INTx_ENABLED, &ha->flags))
+ (!ha->pdev->msi_enabled && !ha->pdev->msix_enabled))
qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg,
0xfbff);
}
@@ -4174,78 +4174,37 @@ qla4_82xx_disable_intrs(struct scsi_qla_host *ha)
spin_unlock_irq(&ha->hardware_lock);
}
-struct ql4_init_msix_entry {
- uint16_t entry;
- uint16_t index;
- const char *name;
- irq_handler_t handler;
-};
-
-static struct ql4_init_msix_entry qla4_8xxx_msix_entries[QLA_MSIX_ENTRIES] = {
- { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
- "qla4xxx (default)",
- (irq_handler_t)qla4_8xxx_default_intr_handler },
- { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
- "qla4xxx (rsp_q)", (irq_handler_t)qla4_8xxx_msix_rsp_q },
-};
-
-void
-qla4_8xxx_disable_msix(struct scsi_qla_host *ha)
-{
- int i;
- struct ql4_msix_entry *qentry;
-
- for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
- qentry = &ha->msix_entries[qla4_8xxx_msix_entries[i].index];
- if (qentry->have_irq) {
- free_irq(qentry->msix_vector, ha);
- DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %s\n",
- __func__, qla4_8xxx_msix_entries[i].name));
- }
- }
- pci_disable_msix(ha->pdev);
- clear_bit(AF_MSIX_ENABLED, &ha->flags);
-}
-
int
qla4_8xxx_enable_msix(struct scsi_qla_host *ha)
{
- int i, ret;
- struct msix_entry entries[QLA_MSIX_ENTRIES];
- struct ql4_msix_entry *qentry;
-
- for (i = 0; i < QLA_MSIX_ENTRIES; i++)
- entries[i].entry = qla4_8xxx_msix_entries[i].entry;
+ int ret;
- ret = pci_enable_msix_exact(ha->pdev, entries, ARRAY_SIZE(entries));
- if (ret) {
+ ret = pci_alloc_irq_vectors(ha->pdev, QLA_MSIX_ENTRIES,
+ QLA_MSIX_ENTRIES, PCI_IRQ_MSIX);
+ if (ret < 0) {
ql4_printk(KERN_WARNING, ha,
"MSI-X: Failed to enable support -- %d/%d\n",
QLA_MSIX_ENTRIES, ret);
- goto msix_out;
- }
- set_bit(AF_MSIX_ENABLED, &ha->flags);
-
- for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
- qentry = &ha->msix_entries[qla4_8xxx_msix_entries[i].index];
- qentry->msix_vector = entries[i].vector;
- qentry->msix_entry = entries[i].entry;
- qentry->have_irq = 0;
- ret = request_irq(qentry->msix_vector,
- qla4_8xxx_msix_entries[i].handler, 0,
- qla4_8xxx_msix_entries[i].name, ha);
- if (ret) {
- ql4_printk(KERN_WARNING, ha,
- "MSI-X: Unable to register handler -- %x/%d.\n",
- qla4_8xxx_msix_entries[i].index, ret);
- qla4_8xxx_disable_msix(ha);
- goto msix_out;
- }
- qentry->have_irq = 1;
- DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %s\n",
- __func__, qla4_8xxx_msix_entries[i].name));
+ return ret;
}
-msix_out:
+
+ ret = request_irq(pci_irq_vector(ha->pdev, 0),
+ qla4_8xxx_default_intr_handler, 0, "qla4xxx (default)",
+ ha);
+ if (ret)
+ goto out_free_vectors;
+
+ ret = request_irq(pci_irq_vector(ha->pdev, 1),
+ qla4_8xxx_msix_rsp_q, 0, "qla4xxx (rsp_q)", ha);
+ if (ret)
+ goto out_free_default_irq;
+
+ return 0;
+
+out_free_default_irq:
+ free_irq(pci_irq_vector(ha->pdev, 0), ha);
+out_free_vectors:
+ pci_free_irq_vectors(ha->pdev);
return ret;
}
--
2.1.4
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