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drm/xe/irq: allocate all possible msix interrupts

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If platform supports MSIX, driver needs to allocate all possible
interrupts.

v2:
  - drop msix_cap and use the api return code instead.
  - fix commit message.

v3:
  - pass specific type in irq flags.

Cc: Ohad Sharabi <osharabi@habana.ai>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Dani Liberman <dliberman@habana.ai>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240124075058.2302235-1-dliberman@habana.ai
This commit is contained in:
Dani Liberman
2024-01-24 09:50:58 +02:00
committed by Lucas De Marchi
parent eb538b5574
commit 82bd83a0cf
1 changed files with 15 additions and 2 deletions
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17
drivers/gpu/drm/xe/xe_irq.c
View File

@@ -683,8 +683,9 @@ static void irq_uninstall(struct drm_device *drm, void *arg)
int xe_irq_install(struct xe_device *xe)
{
struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
unsigned int irq_flags = PCI_IRQ_MSIX;
irq_handler_t irq_handler;
int err, irq;
int err, irq, nvec;
irq_handler = xe_irq_handler(xe);
if (!irq_handler) {
@@ -694,7 +695,19 @@ int xe_irq_install(struct xe_device *xe)
xe_irq_reset(xe);
err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI | PCI_IRQ_MSIX);
nvec = pci_msix_vec_count(pdev);
if (nvec <= 0) {
if (nvec == -EINVAL) {
/* MSIX capability is not supported in the device, using MSI */
irq_flags = PCI_IRQ_MSI;
nvec = 1;
} else {
drm_err(&xe->drm, "MSIX: Failed getting count\n");
return nvec;
}
}
err = pci_alloc_irq_vectors(pdev, nvec, nvec, irq_flags);
if (err < 0) {
drm_err(&xe->drm, "MSI/MSIX: Failed to enable support %d\n", err);
return err;