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| author | Chunming Zhou <David1.Zhou@amd.com> | 2017-05-15 14:20:00 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-05-24 18:10:06 -0400 |
| commit | 0c49e0b8a43c8addb0498cd32390f4ef08b5dd27 (patch) | |
| tree | 154439f0b20cba71463f67ccaf5913a29ebf30d8 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | e0ec45063609b4a583e7f4d843275888f2480321 (diff) | |
| download | lwn-0c49e0b8a43c8addb0498cd32390f4ef08b5dd27.tar.gz lwn-0c49e0b8a43c8addb0498cd32390f4ef08b5dd27.zip | |
drm/amdgpu: check if vram is lost v2
backup first 64 byte of gart table as reset magic, check if magic is same
after gpu hw reset.
v2: use memcmp instead of manual innovation.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 8274d8e23e98..ec9774c0d1d9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1427,6 +1427,7 @@ typedef void (*amdgpu_wreg_t)(struct amdgpu_device*, uint32_t, uint32_t); typedef uint32_t (*amdgpu_block_rreg_t)(struct amdgpu_device*, uint32_t, uint32_t); typedef void (*amdgpu_block_wreg_t)(struct amdgpu_device*, uint32_t, uint32_t, uint32_t); +#define AMDGPU_RESET_MAGIC_NUM 64 struct amdgpu_device { struct device *dev; struct drm_device *ddev; @@ -1619,6 +1620,7 @@ struct amdgpu_device { /* record hw reset is performed */ bool has_hw_reset; + u8 reset_magic[AMDGPU_RESET_MAGIC_NUM]; }; |