[PATCH i-g-t 1/2] drm-uapi/xe: Sync with topology query uapi updates

[Lucas De Marchi]

Align with kernel commit 7108b4a589cd ("drm/xe/uapi: Expose SIMD16 EU
mask in topology query") which adds one item to topology query.

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 include/drm-uapi/xe_drm.h | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/include/drm-uapi/xe_drm.h b/include/drm-uapi/xe_drm.h
index 3bab3fdaa..29425d7fd 100644
--- a/include/drm-uapi/xe_drm.h
+++ b/include/drm-uapi/xe_drm.h
@@ -3,8 +3,8 @@
  * Copyright © 2023 Intel Corporation
  */
 
-#ifndef _XE_DRM_H_
-#define _XE_DRM_H_
+#ifndef _UAPI_XE_DRM_H_
+#define _UAPI_XE_DRM_H_
 
 #include "drm.h"
 
@@ -134,7 +134,7 @@ extern "C" {
  * redefine the interface more easily than an ever growing struct of
  * increasing complexity, and for large parts of that interface to be
  * entirely optional. The downside is more pointer chasing; chasing across
- * the boundary with pointers encapsulated inside u64.
+ * the __user boundary with pointers encapsulated inside u64.
  *
  * Example chaining:
  *
@@ -517,7 +517,14 @@ struct drm_xe_query_gt_list {
  *    available per Dual Sub Slices (DSS). For example a query response
  *    containing the following in mask:
  *    ``EU_PER_DSS    ff ff 00 00 00 00 00 00``
- *    means each DSS has 16 EU.
+ *    means each DSS has 16 SIMD8 EUs. This type may be omitted if device
+ *    doesn't have SIMD8 EUs.
+ *  - %DRM_XE_TOPO_SIMD16_EU_PER_DSS - To query the mask of SIMD16 Execution
+ *    Units (EU) available per Dual Sub Slices (DSS). For example a query
+ *    response containing the following in mask:
+ *    ``SIMD16_EU_PER_DSS    ff ff 00 00 00 00 00 00``
+ *    means each DSS has 16 SIMD16 EUs. This type may be omitted if device
+ *    doesn't have SIMD16 EUs.
  */
 struct drm_xe_query_topology_mask {
 	/** @gt_id: GT ID the mask is associated with */
@@ -527,6 +534,7 @@ struct drm_xe_query_topology_mask {
 #define DRM_XE_TOPO_DSS_COMPUTE		2
 #define DRM_XE_TOPO_L3_BANK		3
 #define DRM_XE_TOPO_EU_PER_DSS		4
+#define DRM_XE_TOPO_SIMD16_EU_PER_DSS	5
 	/** @type: type of mask */
 	__u16 type;
 
@@ -783,7 +791,13 @@ struct drm_xe_gem_create {
 #define DRM_XE_GEM_CPU_CACHING_WC                      2
 	/**
 	 * @cpu_caching: The CPU caching mode to select for this object. If
-	 * mmaping the object the mode selected here will also be used.
+	 * mmaping the object the mode selected here will also be used. The
+	 * exception is when mapping system memory (including data evicted
+	 * to system) on discrete GPUs. The caching mode selected will
+	 * then be overridden to DRM_XE_GEM_CPU_CACHING_WB, and coherency
+	 * between GPU- and CPU is guaranteed. The caching mode of
+	 * existing CPU-mappings will be updated transparently to
+	 * user-space clients.
 	 */
 	__u16 cpu_caching;
 	/** @pad: MBZ */
@@ -1684,4 +1698,4 @@ struct drm_xe_oa_stream_info {
 }
 #endif
 
-#endif /* _XE_DRM_H_ */
+#endif /* _UAPI_XE_DRM_H_ */
-- 
2.43.0