Add UAPI to query the GFX shadow buffer requirements
for preemption on GFX11.  UMDs need to specify the shadow
areas for preemption.

Signed-off-by: Alex Deucher <alexander.deucher@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 3d9474af6566..19a806145371 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -886,6 +886,7 @@ struct drm_amdgpu_cs_chunk_cp_gfx_shadow {
        #define AMDGPU_INFO_VIDEO_CAPS_DECODE           0
        /* Subquery id: Encode */
        #define AMDGPU_INFO_VIDEO_CAPS_ENCODE           1
+#define AMDGPU_INFO_CP_GFX_SHADOW_SIZE         0x22