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drm/amdgpu: add VRAM lost query

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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>
This commit is contained in:
Christian König 2017-10-09 17:53:06 +02:00 committed by Alex Deucher
parent 7a0a48ddf6
commit 1f7251b73e
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View file

@ -763,6 +763,9 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
}
return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
}
case AMDGPU_INFO_VRAM_LOST_COUNTER:
ui32 = atomic_read(&adev->vram_lost_counter);
return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->query);
return -EINVAL;

1
include/uapi/drm/amdgpu_drm.h
View file

@ -657,6 +657,7 @@ struct drm_amdgpu_cs_chunk_data {
#define AMDGPU_INFO_SENSOR_VDDGFX 0x7
/* Number of VRAM page faults on CPU access. */
#define AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS 0x1E
#define AMDGPU_INFO_VRAM_LOST_COUNTER 0x1F
#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT 0
#define AMDGPU_INFO_MMR_SE_INDEX_MASK 0xff