From bd660f4f111161f60392dd02424c3a3d2240dc2f Mon Sep 17 00:00:00 2001
From: shaoyunl <shaoyun.liu@amd.com>
Date: Tue, 1 Oct 2019 15:52:31 -0400
Subject: drm/amdgpu : enable msix for amdgpu driver
Git-commit: bd660f4f111161f60392dd02424c3a3d2240dc2f
Patch-mainline: v5.5-rc1
References: bsc#1152489
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
Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
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 d1d5e7f9b9be..50771b2757dc 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");
}
--
2.28.0