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drm/amdgpu: add VRAM lost query
Allows userspace to figure out if VRAM was lost. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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2 changed files with 4 additions and 0 deletions
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@ -763,6 +763,9 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
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}
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return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
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}
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case AMDGPU_INFO_VRAM_LOST_COUNTER:
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ui32 = atomic_read(&adev->vram_lost_counter);
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return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
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default:
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DRM_DEBUG_KMS("Invalid request %d\n", info->query);
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return -EINVAL;
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@ -657,6 +657,7 @@ struct drm_amdgpu_cs_chunk_data {
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#define AMDGPU_INFO_SENSOR_VDDGFX 0x7
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/* Number of VRAM page faults on CPU access. */
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#define AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS 0x1E
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#define AMDGPU_INFO_VRAM_LOST_COUNTER 0x1F
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#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT 0
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#define AMDGPU_INFO_MMR_SE_INDEX_MASK 0xff
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