From 9256e8d47a2fa0bcb5d32e7fee8c674c476a480f Mon Sep 17 00:00:00 2001 From: Surbhi Kakarya Date: Mon, 25 Sep 2023 12:12:10 -0400 Subject: drm/amd: Disable XNACK on SRIOV environment The purpose of this patch is to disable XNACK or set XNACK OFF mode on SRIOV platform which doesn't support it. This will prevent user-space application to fail or result into unexpected behaviour whenever the application need to run test-case in XNACK ON mode. Signed-off-by: Surbhi Kakarya Reviewed-by: Shaoyun Liu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index a0aa624f5a92..f7d1d356ecdd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -1093,3 +1093,13 @@ u32 amdgpu_sriov_rreg(struct amdgpu_device *adev, else return RREG32(offset); } + +bool amdgpu_sriov_xnack_support(struct amdgpu_device *adev) +{ + bool xnack_mode = true; + + if (amdgpu_sriov_vf(adev) && adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 2)) + xnack_mode = false; + + return xnack_mode; +} -- cgit v1.2.3-70-g09d2