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Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Liu, Shaoyun <Shaoyun.Liu@xxxxxxx>
Sent: Tuesday, October 1, 2019 4:03 PM To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx> Cc: Liu, Shaoyun <Shaoyun.Liu@xxxxxxx> Subject: [PATCH] drm/amdgpu : enable msix for amdgpu driver We might used out of the msi resources in some cloud project
which have a lot gpu devices(including PF and VF), msix can provide enough resources from system level view Change-Id: I9f03762074ac416c07f27b8f00c052ca93c7d6cb Signed-off-by: shaoyunl <shaoyun.liu@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c index d1d5e7f..1bd27ea 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c @@ -245,8 +245,9 @@ int amdgpu_irq_init(struct amdgpu_device *adev) adev->irq.msi_enabled = false; if (amdgpu_msi_ok(adev)) { - int ret = pci_enable_msi(adev->pdev); - if (!ret) { + int nvec = pci_alloc_irq_vectors(adev->pdev, 1, pci_msix_vec_count(adev->pdev), + PCI_IRQ_MSI | PCI_IRQ_MSIX) + if (nvec > 0) { adev->irq.msi_enabled = true; dev_dbg(adev->dev, "amdgpu: using MSI.\n"); } -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx |
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