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drm/amdgpu: Free VGA stolen memory as soon as possible.

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Reserved VRAM is used to avoid overriding pre OS FB.
Once our display stack takes over we don't need the reserved
VRAM anymore.

v2:
Remove comment, we know actually why we need to reserve the stolen VRAM.
Fix return type for amdgpu_ttm_late_init.
v3:
Return 0 in amdgpu_bo_late_init, rebase on changes to previous patch
v4: rebase
v5:
For GMC9 reserve always just 9M and keep the stolem memory around
until GART table curruption on S3 resume is resolved.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky
2018-04-06 14:54:10 -05:00
committed by Alex Deucher
parent ebdef28ebb
commit 6f752ec2c2
8 changed files with 46 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@@ -852,6 +852,13 @@ int amdgpu_bo_init(struct amdgpu_device *adev)
return amdgpu_ttm_init(adev);
}
int amdgpu_bo_late_init(struct amdgpu_device *adev)
{
amdgpu_ttm_late_init(adev);
return 0;
}
void amdgpu_bo_fini(struct amdgpu_device *adev)
{
amdgpu_ttm_fini(adev);