drm/amdgpu: introduce a stolen reserved buffer to protect specific buffer region (v2)

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Some ASICs such as Yellow Carp needs to reserve a region of video memory
to avoid access from driver. So this patch is to introduce a stolen
reserved buffer to protect specific buffer region.

v2: free this buffer in amdgpu_ttm_fini.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-and-Tested-by: Aaron Liu <aaron.liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Huang Rui 2020-12-16 17:21:27 +08:00 • committed by Alex Deucher

parent cba00ce82d

commit e15a5fb9b6

5 changed files with 32 additions and 0 deletions

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16

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

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1

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h

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10

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

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4

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h

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1

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

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