diff options
| author | Yifan Zha <Yifan.Zha@amd.com> | 2022-07-27 14:43:32 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-01 15:11:45 -0400 |
| commit | 40ad3e545b3da75f107450d32bcad8346fce5dcc (patch) | |
| tree | ce54f4ec16792fa24abaa77ff09d45064152e703 /drivers/gpu/drm/amd/amdgpu | |
| parent | 5818eae501c57e003de9e4f52a6001827e123a88 (diff) | |
| download | linux-40ad3e545b3da75f107450d32bcad8346fce5dcc.tar.bz2 | |
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: Christian König <christian.koenig@amd.com>
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Signed-off-by: Horace Chen <horace.chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c index 592729cb0f48..846ccb6cf07d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c @@ -649,7 +649,10 @@ static void gmc_v11_0_vram_gtt_location(struct amdgpu_device *adev, amdgpu_gmc_gart_location(adev, mc); /* base offset of vram pages */ - adev->vm_manager.vram_base_offset = adev->mmhub.funcs->get_mc_fb_offset(adev); + 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); } /** |