drm/xe/oa/uapi: Define and parse OA sync properties

[ Upstream commit c8507a25cebd179db935dd266a33c51bef1b1e80 ]

Now that we have laid the groundwork, introduce OA sync properties in the
uapi and parse the input xe_sync array as is done elsewhere in the
driver. Also add DRM_XE_OA_CAPS_SYNCS bit in OA capabilities for userspace.

v2: Fix and document DRM_XE_SYNC_TYPE_USER_FENCE for OA (Matt B)
    Add DRM_XE_OA_CAPS_SYNCS bit to OA capabilities (Jose)

Acked-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241022200352.1192560-3-ashutosh.dixit@intel.com
Stable-dep-of: f0ed39830e60 ("xe/oa: Fix query mode of operation for OAR/OAC")
Signed-off-by: Sasha Levin <sashal@kernel.org>

include/uapi/drm/xe_drm.h

@@ -1485,6 +1485,7 @@ struct drm_xe_oa_unit {
 	/** @capabilities: OA capabilities bit-mask */
 	__u64 capabilities;
 #define DRM_XE_OA_CAPS_BASE		(1 << 0)
+#define DRM_XE_OA_CAPS_SYNCS		(1 << 1)
 
 	/** @oa_timestamp_freq: OA timestamp freq */
 	__u64 oa_timestamp_freq;
@@ -1634,6 +1635,22 @@ enum drm_xe_oa_property_id {
 	 * to be disabled for the stream exec queue.
 	 */
 	DRM_XE_OA_PROPERTY_NO_PREEMPT,
+
+	/**
+	 * @DRM_XE_OA_PROPERTY_NUM_SYNCS: Number of syncs in the sync array
+	 * specified in @DRM_XE_OA_PROPERTY_SYNCS
+	 */
+	DRM_XE_OA_PROPERTY_NUM_SYNCS,
+
+	/**
+	 * @DRM_XE_OA_PROPERTY_SYNCS: Pointer to struct @drm_xe_sync array
+	 * with array size specified via @DRM_XE_OA_PROPERTY_NUM_SYNCS. OA
+	 * configuration will wait till input fences signal. Output fences
+	 * will signal after the new OA configuration takes effect. For
+	 * @DRM_XE_SYNC_TYPE_USER_FENCE, @addr is a user pointer, similar
+	 * to the VM bind case.
+	 */
+	DRM_XE_OA_PROPERTY_SYNCS,
 };
 
 /**