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drm/amdgpu: assign fb_start/end in mmhub v9.4 interface 

Align with mmhub v1.0.

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Le Ma 2019-04-22 17:14:59 +08:00 committed by Alex Deucher
parent cd1fd7b381
commit 6c54afc7e8
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c
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@ -39,10 +39,17 @@ u64 mmhub_v9_4_get_fb_location(struct amdgpu_device *adev)
{
/* The base should be same b/t 2 mmhubs on Acrturus. Read one here. */
u64 base = RREG32_SOC15(MMHUB, 0, mmVMSHAREDVC0_MC_VM_FB_LOCATION_BASE);
u64 top = RREG32_SOC15(MMHUB, 0, mmVMSHAREDVC0_MC_VM_FB_LOCATION_TOP);
base &= VMSHAREDVC0_MC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
base <<= 24;
top &= VMSHAREDVC0_MC_VM_FB_LOCATION_TOP__FB_TOP_MASK;
top <<= 24;
adev->gmc.fb_start = base;
adev->gmc.fb_end = top;
return base;
}