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scsi: pmcraid: switch to pci_alloc_irq_vectors 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2016-11-18 07:28:16 +01:00 committed by Martin K. Petersen
parent 984dc46c57
commit eab5c1503b
2 changed files with 37 additions and 48 deletions
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84
drivers/scsi/pmcraid.c
View File

@ -4587,16 +4587,14 @@ static void pmcraid_tasklet_function(unsigned long instance)
static
void pmcraid_unregister_interrupt_handler(struct pmcraid_instance *pinstance)
{
struct pci_dev *pdev = pinstance->pdev;
int i;
for (i = 0; i < pinstance->num_hrrq; i++)
free_irq(pinstance->hrrq_vector[i].vector,
&(pinstance->hrrq_vector[i]));
free_irq(pci_irq_vector(pdev, i), &pinstance->hrrq_vector[i]);
if (pinstance->interrupt_mode) {
pci_disable_msix(pinstance->pdev);
pinstance->interrupt_mode = 0;
}
pinstance->interrupt_mode = 0;
pci_free_irq_vectors(pdev);
}
/**
@ -4609,60 +4607,52 @@ void pmcraid_unregister_interrupt_handler(struct pmcraid_instance *pinstance)
static int
pmcraid_register_interrupt_handler(struct pmcraid_instance *pinstance)
{
int rc;
struct pci_dev *pdev = pinstance->pdev;
unsigned int irq_flag = PCI_IRQ_LEGACY, flag;
int num_hrrq, rc, i;
irq_handler_t isr;
if ((pmcraid_enable_msix) &&
(pci_find_capability(pdev, PCI_CAP_ID_MSIX))) {
int num_hrrq = PMCRAID_NUM_MSIX_VECTORS;
struct msix_entry entries[PMCRAID_NUM_MSIX_VECTORS];
int i;
for (i = 0; i < PMCRAID_NUM_MSIX_VECTORS; i++)
entries[i].entry = i;
if (pmcraid_enable_msix)
irq_flag |= PCI_IRQ_MSIX;
num_hrrq = pci_enable_msix_range(pdev, entries, 1, num_hrrq);
if (num_hrrq < 0)
goto pmcraid_isr_legacy;
num_hrrq = pci_alloc_irq_vectors(pdev, 1, PMCRAID_NUM_MSIX_VECTORS,
irq_flag);
if (num_hrrq < 0)
return num_hrrq;
for (i = 0; i < num_hrrq; i++) {
pinstance->hrrq_vector[i].hrrq_id = i;
pinstance->hrrq_vector[i].drv_inst = pinstance;
pinstance->hrrq_vector[i].vector = entries[i].vector;
rc = request_irq(pinstance->hrrq_vector[i].vector,
pmcraid_isr_msix, 0,
PMCRAID_DRIVER_NAME,
&(pinstance->hrrq_vector[i]));
if (pdev->msix_enabled) {
flag = 0;
isr = pmcraid_isr_msix;
} else {
flag = IRQF_SHARED;
isr = pmcraid_isr;
}
if (rc) {
int j;
for (j = 0; j < i; j++)
free_irq(entries[j].vector,
&(pinstance->hrrq_vector[j]));
pci_disable_msix(pdev);
goto pmcraid_isr_legacy;
}
}
for (i = 0; i < num_hrrq; i++) {
struct pmcraid_isr_param *vec = &pinstance->hrrq_vector[i];
pinstance->num_hrrq = num_hrrq;
vec->hrrq_id = i;
vec->drv_inst = pinstance;
rc = request_irq(pci_irq_vector(pdev, i), isr, flag,
PMCRAID_DRIVER_NAME, vec);
if (rc)
goto out_unwind;
}
pinstance->num_hrrq = num_hrrq;
if (pdev->msix_enabled) {
pinstance->interrupt_mode = 1;
iowrite32(DOORBELL_INTR_MODE_MSIX,
pinstance->int_regs.host_ioa_interrupt_reg);
ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
goto pmcraid_isr_out;
}
pmcraid_isr_legacy:
/* If MSI-X registration failed fallback to legacy mode, where
* only one hrrq entry will be used
*/
pinstance->hrrq_vector[0].hrrq_id = 0;
pinstance->hrrq_vector[0].drv_inst = pinstance;
pinstance->hrrq_vector[0].vector = pdev->irq;
pinstance->num_hrrq = 1;
return 0;
rc = request_irq(pdev->irq, pmcraid_isr, IRQF_SHARED,
PMCRAID_DRIVER_NAME, &pinstance->hrrq_vector[0]);
pmcraid_isr_out:
out_unwind:
while (--i > 0)
free_irq(pci_irq_vector(pdev, i), &pinstance->hrrq_vector[i]);
pci_free_irq_vectors(pdev);
return rc;
}

1
drivers/scsi/pmcraid.h
View File

@ -628,7 +628,6 @@ struct pmcraid_interrupts {
/* ISR parameters LLD allocates (one for each MSI-X if enabled) vectors */
struct pmcraid_isr_param {
struct pmcraid_instance *drv_inst;
u16 vector; /* allocated msi-x vector */
u8 hrrq_id; /* hrrq entry index */
};