Cleanup the MSI-X handling allowing us to use
the PCI-layer provided vector allocation.
Signed-off-by: Hannes Reinecke <h...@suse.com>
---
drivers/scsi/megaraid/megaraid_sas.h | 1 -
drivers/scsi/megaraid/megaraid_sas_base.c | 63 ++++++++++++++-----------------
2 files changed, 29 insertions(+), 35 deletions(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas.h
b/drivers/scsi/megaraid/megaraid_sas.h
index ca86c88..8f1d2b4 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2118,7 +2118,6 @@ struct megasas_instance {
u32 ctrl_context_pages;
struct megasas_ctrl_info *ctrl_info;
unsigned int msix_vectors;
- struct msix_entry msixentry[MEGASAS_MAX_MSIX_QUEUES];
struct megasas_irq_context irq_context[MEGASAS_MAX_MSIX_QUEUES];
u64 map_id;
u64 pd_seq_map_id;
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c
b/drivers/scsi/megaraid/megaraid_sas_base.c
index 3236632..e7e3efd 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4843,7 +4843,7 @@ int megasas_set_crash_dump_params(struct megasas_instance
*instance,
}
/*
- * megasas_setup_irqs_msix - register legacy interrupts.
+ * megasas_setup_irqs_ioapic - register legacy interrupts.
* @instance: Adapter soft state
*
* Do not enable interrupt, only setup ISRs.
@@ -4858,8 +4858,9 @@ int megasas_set_crash_dump_params(struct megasas_instance
*instance,
pdev = instance->pdev;
instance->irq_context[0].instance = instance;
instance->irq_context[0].MSIxIndex = 0;
- if (request_irq(pdev->irq, instance->instancet->service_isr,
- IRQF_SHARED, "megasas", &instance->irq_context[0])) {
+ if (request_irq(pci_irq_vector(pdev, 0),
+ instance->instancet->service_isr, IRQF_SHARED,
+ "megasas", &instance->irq_context[0])) {
dev_err(&instance->pdev->dev,
"Failed to register IRQ from %s %d\n",
__func__, __LINE__);
@@ -4880,28 +4881,23 @@ int megasas_set_crash_dump_params(struct
megasas_instance *instance,
static int
megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
{
- int i, j, cpu;
+ int i, j;
struct pci_dev *pdev;
pdev = instance->pdev;
/* Try MSI-x */
- cpu = cpumask_first(cpu_online_mask);
for (i = 0; i < instance->msix_vectors; i++) {
instance->irq_context[i].instance = instance;
instance->irq_context[i].MSIxIndex = i;
- if (request_irq(instance->msixentry[i].vector,
+ if (request_irq(pci_irq_vector(pdev, i),
instance->instancet->service_isr, 0, "megasas",
&instance->irq_context[i])) {
dev_err(&instance->pdev->dev,
"Failed to register IRQ for vector %d.\n", i);
- for (j = 0; j < i; j++) {
- if (smp_affinity_enable)
- irq_set_affinity_hint(
- instance->msixentry[j].vector,
NULL);
- free_irq(instance->msixentry[j].vector,
- &instance->irq_context[j]);
- }
+ for (j = 0; j < i; j++)
+ free_irq(pci_irq_vector(pdev, j),
+ &instance->irq_context[j]);
/* Retry irq register for IO_APIC*/
instance->msix_vectors = 0;
if (is_probe)
@@ -4909,14 +4905,6 @@ int megasas_set_crash_dump_params(struct
megasas_instance *instance,
else
return -1;
}
- if (smp_affinity_enable) {
- if (irq_set_affinity_hint(instance->msixentry[i].vector,
- get_cpu_mask(cpu)))
- dev_err(&instance->pdev->dev,
- "Failed to set affinity hint"
- " for cpu %d\n", cpu);
- cpu = cpumask_next(cpu, cpu_online_mask);
- }
}
return 0;
}
@@ -4933,14 +4921,12 @@ int megasas_set_crash_dump_params(struct
megasas_instance *instance,
if (instance->msix_vectors)
for (i = 0; i < instance->msix_vectors; i++) {
- if (smp_affinity_enable)
- irq_set_affinity_hint(
- instance->msixentry[i].vector, NULL);
- free_irq(instance->msixentry[i].vector,
+ free_irq(pci_irq_vector(instance->pdev, i),
&instance->irq_context[i]);
}
else
- free_irq(instance->pdev->irq, &instance->irq_context[0]);
+ free_irq(pci_irq_vector(instance->pdev, 0),
+ &instance->irq_context[0]);
}
/**
@@ -5018,6 +5004,7 @@ static int megasas_init_fw(struct megasas_instance
*instance)
int i, loop, fw_msix_count = 0;
struct IOV_111 *iovPtr;
struct fusion_context *fusion;
+ int irq_flags = PCI_IRQ_MSIX;
fusion = instance->ctrl_context;
@@ -5134,15 +5121,18 @@ static int megasas_init_fw(struct megasas_instance
*instance)
/* Don't bother allocating more MSI-X vectors than cpus */
instance->msix_vectors = min(instance->msix_vectors,
(unsigned int)num_online_cpus());
- for (i = 0; i < instance->msix_vectors; i++)
- instance->msixentry[i].entry = i;
- i = pci_enable_msix_range(instance->pdev, instance->msixentry,
- 1, instance->msix_vectors);
+ if (smp_affinity_enable)
+ irq_flags |= PCI_IRQ_AFFINITY;
+ i = pci_alloc_irq_vectors(instance->pdev, 1,
+ instance->msix_vectors, irq_flags);
if (i > 0)
instance->msix_vectors = i;
else
instance->msix_vectors = 0;
}
+ i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
+ if (i < 0)
+ goto fail_setup_irqs;
dev_info(&instance->pdev->dev,
"firmware supports msix\t: (%d)", fw_msix_count);
@@ -5587,7 +5577,6 @@ static int megasas_io_attach(struct megasas_instance
*instance)
/*
* Export parameters required by SCSI mid-layer
*/
- host->irq = instance->pdev->irq;
host->unique_id = instance->unique_id;
host->can_queue = instance->max_scsi_cmds;
host->this_id = instance->init_id;
@@ -6128,6 +6117,7 @@ static void megasas_shutdown_controller(struct
megasas_instance *instance,
int rval;
struct Scsi_Host *host;
struct megasas_instance *instance;
+ int irq_flags = PCI_IRQ_LEGACY;
instance = pci_get_drvdata(pdev);
host = instance->host;
@@ -6163,9 +6153,14 @@ static void megasas_shutdown_controller(struct
megasas_instance *instance,
goto fail_ready_state;
/* Now re-enable MSI-X */
- if (instance->msix_vectors &&
- pci_enable_msix_exact(instance->pdev, instance->msixentry,
- instance->msix_vectors))
+ if (instance->msix_vectors)
+ irq_flags = PCI_IRQ_MSIX;
+ if (smp_affinity_enable)
+ irq_flags |= PCI_IRQ_AFFINITY;
+ rval = pci_alloc_irq_vectors(instance->pdev, 1,
+ instance->msix_vectors ?
+ instance->msix_vectors : 1, irq_flags);
+ if (rval < 0)
goto fail_reenable_msix;
if (instance->ctrl_context) {
--
1.8.5.6
--
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