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drm/amdgpu: set system aperture to cover whole FB region in mmhub v9.4 

In XGMI configuration, the FB region covers vram region from peer
device, adjust system aperture to cover all of them

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 2019-04-26 16:36:44 +08:00 committed by Alex Deucher
parent 75b2fce2d8
commit 7d0670f441
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c
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@ -114,12 +114,11 @@ static void mmhub_v9_4_init_system_aperture_regs(struct amdgpu_device *adev,
WREG32_SOC15_OFFSET(MMHUB, 0,
mmVMSHAREDVC0_MC_VM_SYSTEM_APERTURE_LOW_ADDR,
hubid * MMHUB_INSTANCE_REGISTER_OFFSET,
min(adev->gmc.vram_start, adev->gmc.agp_start)
>> 18);
min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);
WREG32_SOC15_OFFSET(MMHUB, 0,
mmVMSHAREDVC0_MC_VM_SYSTEM_APERTURE_HIGH_ADDR,
hubid * MMHUB_INSTANCE_REGISTER_OFFSET,
max(adev->gmc.vram_end, adev->gmc.agp_end) >> 18);
max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18);
/* Set default page address. */
value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start +