drm/v3d: Create a CPU job extension for the reset performance query job

A CPU job is a type of job that performs operations that requires CPU
intervention. A reset performance query job is a job that resets the
performance queries by resetting the values of the perfmons. Moreover,
we also reset the syncobjs related to the availability of the query.

So, create a user extension for the CPU job that enables the creation
of a reset performance job. This user extension will allow the creation of
a CPU job that resets the perfmons values and resets the availability syncobj.

Signed-off-by: Maíra Canal <[email protected]>
Reviewed-by: Iago Toral Quiroga <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

1 files changed, 30 insertions, 0 deletions

diff --git a/include/uapi/drm/v3d_drm.h b/include/uapi/drm/v3d_drm.h
index f7defbf3d043..d609bdf29fd6 100644
--- a/include/uapi/drm/v3d_drm.h
+++ b/include/uapi/drm/v3d_drm.h
@@ -76,6 +76,7 @@ struct drm_v3d_extension {
 #define DRM_V3D_EXT_ID_CPU_TIMESTAMP_QUERY		0x03
 #define DRM_V3D_EXT_ID_CPU_RESET_TIMESTAMP_QUERY	0x04
 #define DRM_V3D_EXT_ID_CPU_COPY_TIMESTAMP_QUERY	0x05
+#define DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY	0x06
 	__u32 flags; /* mbz */
 };
 
@@ -492,6 +493,32 @@ struct drm_v3d_copy_timestamp_query {
 	__u64 syncs;
 };
 
+/**
+ * struct drm_v3d_reset_performance_query - ioctl extension for the CPU job to
+ * reset performance queries
+ *
+ * When an extension DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY is defined, it
+ * points to this extension to define a reset performance submission. This CPU
+ * job will reset the performance queries by resetting the values of the
+ * performance monitors. Moreover, it will reset the syncobj to reset query
+ * availability.
+ */
+struct drm_v3d_reset_performance_query {
+	struct drm_v3d_extension base;
+
+	/* Array of performance queries's syncobjs to indicate its availability */
+	__u64 syncs;
+
+	/* Number of queries */
+	__u32 count;
+
+	/* Number of performance monitors */
+	__u32 nperfmons;
+
+	/* Array of u64 user-pointers that point to an array of kperfmon_ids */
+	__u64 kperfmon_ids;
+};
+
 struct drm_v3d_submit_cpu {
 	/* Pointer to a u32 array of the BOs that are referenced by the job.
 	 *
@@ -507,6 +534,9 @@ struct drm_v3d_submit_cpu {
 	 * For DRM_V3D_EXT_ID_CPU_COPY_TIMESTAMP_QUERY, it must contain two
 	 * BOs. The first is the BO where the timestamp queries will be written
 	 * to. The second is the BO that contains the timestamp.
+	 *
+	 * For DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY, it must contain no
+	 * BOs.
 	 */
 	__u64 bo_handles;