gpu: nvgpu: add TSG support to channel event id

Add NVGPU_IOCTL_TSG_EVENT_ID_CTRL API for channel
event id support to TSGs

This API will accept an event_id (like BPT.INT or
BPT.PAUSE), a command to enable
the event, and return a file descriptor on which
we can raise the event (if cmd=enable)

Events generated for TSGs will reuse file
operations "gk20a_event_id_ops"

Bug 200089620

Change-Id: I2f563c6d3a0988eb670caac2d3c7c6795724792c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1030776
(cherry picked from commit 72b61fa266279038f013e582be80c21808e1038d)
Reviewed-on: http://git-master/r/1120319
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.h b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.h
index 7e0a75d1..ac872e30 100644
--- a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.h
@@ -51,6 +51,9 @@ struct tsg_gk20a {
         struct vm_gk20a *vm;
 
         u32 interleave_level;
+
+        struct list_head event_id_list;
+        struct mutex event_id_list_lock;
 };
 
 int gk20a_enable_tsg(struct tsg_gk20a *tsg);