video: tegra: host: Add eventlib support

This change adds support for eventlib completion events. Eventlib
is a library that is intended to interface with Tegra System Profiler
to deliver information about e.g. task start and completion events.

Bug 1996639

Change-Id: Ia5efcfb7ce54b7ee7822d6d5a153369b5a4ae535
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1580285
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/include/uapi/linux/nvhost_events.h b/include/uapi/linux/nvhost_events.h
new file mode 100644
index 000000000..1935f6edd
--- /dev/null
+++ b/include/uapi/linux/nvhost_events.h
@@ -0,0 +1,71 @@
+/*
+ * Eventlib interface for PVA
+ *
+ * Copyright (c) 2016-2017, NVIDIA Corporation.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef NVHOST_EVENTS_H
+#define NVHOST_EVENTS_H
+
+enum {
+        NVHOST_SCHEMA_VERSION = 1
+};
+
+#define NVHOST_EVENT_PROVIDER_NAME "nvhost"
+
+/* Marks that the task is moving to execution */
+struct nvhost_task_start {
+        /* Engine class ID */
+        u32 class_id;
+
+        /* Syncpoint ID */
+        u32 syncpt_id;
+
+        /* Threshold for task completion */
+        u32 syncpt_thresh;
+} __packed;
+
+/* Marks that the task is completed */
+struct nvhost_task_end {
+        /* Engine class ID */
+        u32 class_id;
+
+        /* Syncpoint ID */
+        u32 syncpt_id;
+
+        /* Threshold for task completion */
+        u32 syncpt_thresh;
+} __packed;
+
+enum {
+        /* struct nvhost_task_start */
+        NVHOST_TASK_START = 0,
+
+        /* struct nvhost_task_end */
+        NVHOST_TASK_END = 1,
+
+        NVHOST_NUM_EVENT_TYPES = 2
+};
+
+union nvhost_event_union {
+        struct nvhost_task_start task_start;
+        struct nvhost_task_end task_end;
+};
+
+enum {
+        NVHOST_NUM_CUSTOM_FILTER_FLAGS = 0
+};
+
+#endif /* NVHOST_EVENTS_H */