On 09.10.2017 17:53, Christian König wrote:
> From: Christian König <christian.koenig at amd.com>
>
> Allows userspace to figure out if VRAM was lost.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
Yes, I think we can use this in Mesa. We'll need to actually code this
up, but for now this patch is:
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 +++
> include/uapi/drm/amdgpu_drm.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index 0fc36b2..49cc496 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -762,6 +762,9 @@ 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;
> diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
> index 3bf41a6..de0a2ac 100644
> --- a/include/uapi/drm/amdgpu_drm.h
> +++ b/include/uapi/drm/amdgpu_drm.h
> @@ -632,6 +632,7 @@ 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
>
--
Lerne, wie die Welt wirklich ist,
Aber vergiss niemals, wie sie sein sollte.
