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drm/amdgpu: Skip using MC FB Offset when APU flag is set for SRIOV. 

The MC_VM_FB_OFFSET is PF only register. It cannot be read on VF.
So, the driver should not use MC_VM_FB_OFFSET address to set the
address of dev->gmc.aper_base.

Signed-off-by: Gavin Wan <Gavin.Wan@amd.com>
Reviewed-by: Zhigang Luo <zhigang.luo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Gavin Wan 2023-04-03 17:49:41 -04:00 committed by Alex Deucher
parent 63630c9e5c
commit b0a3bbf947
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
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@ -1644,7 +1644,8 @@ static int gmc_v9_0_mc_init(struct amdgpu_device *adev)
*/
/* check whether both host-gpu and gpu-gpu xgmi links exist */
if (((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev)) ||
if ((!amdgpu_sriov_vf(adev) &&
(adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev)) ||
(adev->gmc.xgmi.supported &&
adev->gmc.xgmi.connected_to_cpu)) {
adev->gmc.aper_base =