diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c index 32ce0e679dc7..83af307e97cd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c @@ -278,6 +278,21 @@ static bool amdgpu_msi_ok(struct amdgpu_device *adev) return true; } +static void amdgpu_restore_msix(struct amdgpu_device *adev) +{ + u16 ctrl; + + pci_read_config_word(adev->pdev, adev->pdev->msix_cap + PCI_MSIX_FLAGS, &ctrl); + if (!(ctrl & PCI_MSIX_FLAGS_ENABLE)) + return; + + /* VF FLR */ + ctrl &= ~PCI_MSIX_FLAGS_ENABLE; + pci_write_config_word(adev->pdev, adev->pdev->msix_cap + PCI_MSIX_FLAGS, ctrl); + ctrl |= PCI_MSIX_FLAGS_ENABLE; + pci_write_config_word(adev->pdev, adev->pdev->msix_cap + PCI_MSIX_FLAGS, ctrl); +} + /** * amdgpu_irq_init - initialize interrupt handling * @@ -569,6 +584,9 @@ void amdgpu_irq_gpu_reset_resume_helper(struct amdgpu_device *adev) { int i, j, k; + if (amdgpu_sriov_vf(adev)) + amdgpu_restore_msix(adev); + for (i = 0; i < AMDGPU_IRQ_CLIENTID_MAX; ++i) { if (!adev->irq.client[i].sources) continue; |