/**
* Setup MSIX based interrupt.
*/
int
bfad_setup_intr(struct bfad_s *bfad)
{
int error = 0;
u32 mask = 0, i, num_bit = 0, max_bit = 0;
struct msix_entry msix_entries[MAX_MSIX_ENTRY];
/* Call BFA to get the msix map for this PCI function. */
bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
/* Set up the msix entry table */
bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
if (!msix_disable) {
error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
if (error) {
/*
* Only error number of vector is available.
* We don't have a mechanism to map multiple
* interrupts into one vector, so even if we
* can try to request less vectors, we don't
* know how to associate interrupt events to
* vectors. Linux doesn't dupicate vectors
* in the MSIX table for this case.
*/
printk(KERN_WARNING "bfad%d: "
"pci_enable_msix failed (%d),"
" use line based.\n", bfad->inst_no, error);
goto line_based;
}
/* Save the vectors */
for (i = 0; i < bfad->nvec; i++) {
bfa_trc(bfad, msix_entries[i].vector);
bfad->msix_tab[i].msix.vector = msix_entries[i].vector;
}
bfa_msix_init(&bfad->bfa, bfad->nvec);
bfad->bfad_flags |= BFAD_MSIX_ON;
return error;
}
line_based:
error = 0;
if (request_irq
(bfad->pcidev->irq, (irq_handler_t) bfad_intx, BFAD_IRQ_FLAGS,
BFAD_DRIVER_NAME, bfad) != 0) {
/* Enable interrupt handler failed */
return 1;
}
return error;
}
int
bfad_setup_intr(struct bfad_s *bfad)
{
int error = 0;
u32 mask = 0, i, num_bit = 0, max_bit = 0;
struct msix_entry msix_entries[MAX_MSIX_ENTRY];
bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
if (!msix_disable) {
error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
if (error) {
printk(KERN_WARNING "bfad%d: "
"pci_enable_msix failed (%d),"
" use line based.\n", bfad->inst_no, error);
goto line_based;
}
for (i = 0; i < bfad->nvec; i++) {
bfa_trc(bfad, msix_entries[i].vector);
bfad->msix_tab[i].msix.vector = msix_entries[i].vector;
}
bfa_msix_init(&bfad->bfa, bfad->nvec);
bfad->bfad_flags |= BFAD_MSIX_ON;
return error;
}
line_based:
error = 0;
if (request_irq
(bfad->pcidev->irq, (irq_handler_t) bfad_intx, BFAD_IRQ_FLAGS,
BFAD_DRIVER_NAME, bfad) != 0) {
return 1;
}
return error;
}
