Commit 40ad3e54 authored by Yifan Zha's avatar Yifan Zha Committed by Alex Deucher

drm/amdgpu: Skip the VRAM base offset on SRIOV

[Why]
As VF cannot read MMMC_VM_FB_OFFSET with L1 Policy(read 0xffffffff).
It leads to driver get the incorrect vram base offset.

[How]
Since SR-IOV is dGPU only, skip reading this register and set the
fb_offest to 0.
Acked-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarYifan Zha <Yifan.Zha@amd.com>
Signed-off-by: default avatarHorace Chen <horace.chen@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5818eae5
......@@ -649,6 +649,9 @@ static void gmc_v11_0_vram_gtt_location(struct amdgpu_device *adev,
amdgpu_gmc_gart_location(adev, mc);
/* base offset of vram pages */
if (amdgpu_sriov_vf(adev))
adev->vm_manager.vram_base_offset = 0;
else
adev->vm_manager.vram_base_offset = adev->mmhub.funcs->get_mc_fb_offset(adev);
}
......
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