Commit b0a3bbf9 authored by Gavin Wan's avatar Gavin Wan Committed by Alex Deucher
Browse files

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: default avatarGavin Wan <Gavin.Wan@amd.com>
Reviewed-by: default avatarZhigang Luo <zhigang.luo@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 63630c9e

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

+2 −1
Original line number Diff line number Diff line
@@ -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 =