Commit 1f7251b7 authored by Christian König's avatar Christian König Committed by Alex Deucher
Browse files

drm/amdgpu: add VRAM lost query 



Allows userspace to figure out if VRAM was lost.

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarNicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7a0a48dd

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

+3 −0
Original line number Diff line number Diff line
@@ -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;

include/uapi/drm/amdgpu_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -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

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