gds_va is unnecessary.
Marek
On Thu, Mar 30, 2023 at 3:18 PM Alex Deucher <alexander.deuc...@amd.com>
wrote:
> For GFX11, the UMD needs to allocate some shadow buffers
> to be used for preemption. The UMD allocates the buffers
> and passes the GPU virtual address to the kernel since the
> kernel will program the packet that specified these
> addresses as part of its IB submission frame.
>
> v2: UMD passes shadow init to tell kernel when to initialize
> the shadow
>
> Reviewed-by: Christian König <christian.koe...@amd.com>
> Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
> ---
> include/uapi/drm/amdgpu_drm.h | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
> index b6eb90df5d05..3d9474af6566 100644
> --- a/include/uapi/drm/amdgpu_drm.h
> +++ b/include/uapi/drm/amdgpu_drm.h
> @@ -592,6 +592,7 @@ struct drm_amdgpu_gem_va {
> #define AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES 0x07
> #define AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT 0x08
> #define AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL 0x09
> +#define AMDGPU_CHUNK_ID_CP_GFX_SHADOW 0x0a
>
> struct drm_amdgpu_cs_chunk {
> __u32 chunk_id;
> @@ -708,6 +709,15 @@ struct drm_amdgpu_cs_chunk_data {
> };
> };
>
> +#define AMDGPU_CS_CHUNK_CP_GFX_SHADOW_FLAGS_INIT_SHADOW 0x1
> +
> +struct drm_amdgpu_cs_chunk_cp_gfx_shadow {
> + __u64 shadow_va;
> + __u64 csa_va;
> + __u64 gds_va;
> + __u64 flags;
> +};
> +
> /*
> * Query h/w info: Flag that this is integrated (a.h.a. fusion) GPU
> *
> --
> 2.39.2
>
>
