[PATCH v3 7/7] drm/xe/uapi: Add a query flag for has_device_atomics_on_smem

[Nirmoy Das]

Add a query flag for xe->info.has_device_atomics_on_smem
as this is platform dependent. This flag can be use to inform
whether DRM_XE_VM_BIND_FLAG_DEVICE_ATOMICS can be effectively
applied for a given platform.

Signed-off-by: Nirmoy Das <nirmoy.das at intel.com>
---
 drivers/gpu/drm/xe/xe_query.c | 3 +++
 include/uapi/drm/xe_drm.h     | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_query.c b/drivers/gpu/drm/xe/xe_query.c
index df407d73e5f5..43272fdd5442 100644
--- a/drivers/gpu/drm/xe/xe_query.c
+++ b/drivers/gpu/drm/xe/xe_query.c
@@ -336,6 +336,9 @@ static int query_config(struct xe_device *xe, struct drm_xe_device_query *query)
 	if (xe_device_get_root_tile(xe)->mem.vram.usable_size)
 		config->info[DRM_XE_QUERY_CONFIG_FLAGS] =
 			DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM;
+	if (xe->info.has_device_atomics_on_smem)
+		config->info[DRM_XE_QUERY_CONFIG_FLAGS] |=
+			DRM_XE_QUERY_CONFIG_FLAG_HAS_DEV_ATOMIC_ON_SMEM;
 	config->info[DRM_XE_QUERY_CONFIG_MIN_ALIGNMENT] =
 		xe->info.vram_flags & XE_VRAM_FLAGS_NEED64K ? SZ_64K : SZ_4K;
 	config->info[DRM_XE_QUERY_CONFIG_VA_BITS] = xe->info.va_bits;
diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h
index ca4447e10ac9..80fff6fe3199 100644
--- a/include/uapi/drm/xe_drm.h
+++ b/include/uapi/drm/xe_drm.h
@@ -389,6 +389,8 @@ struct drm_xe_query_mem_regions {
  *
  *    - %DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM - Flag is set if the device
  *      has usable VRAM
+ *    - %DRM_XE_QUERY_CONFIG_FLAG_HAS_DEV_ATOMIC_ON_SMEM - Flag is set if the device
+ *      supports device atomics on system memory
  *  - %DRM_XE_QUERY_CONFIG_MIN_ALIGNMENT - Minimal memory alignment
  *    required by this device, typically SZ_4K or SZ_64K
  *  - %DRM_XE_QUERY_CONFIG_VA_BITS - Maximum bits of a virtual address
@@ -404,7 +406,8 @@ struct drm_xe_query_config {
 
 #define DRM_XE_QUERY_CONFIG_REV_AND_DEVICE_ID	0
 #define DRM_XE_QUERY_CONFIG_FLAGS			1
-	#define DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM	(1 << 0)
+	#define DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM		(1 << 0)
+	#define DRM_XE_QUERY_CONFIG_FLAG_HAS_DEV_ATOMIC_ON_SMEM	(1 << 1)
 #define DRM_XE_QUERY_CONFIG_MIN_ALIGNMENT		2
 #define DRM_XE_QUERY_CONFIG_VA_BITS			3
 #define DRM_XE_QUERY_CONFIG_MAX_EXEC_QUEUE_PRIORITY	4
-- 
2.42.0