gpu: nvgpu: Post GR_SEMAPHORE_WRITE_AWAKEN event

Post GR_SEMAPHORE_WRITE_AWAKEN event on semaphore write awken
interrupt for channel.

BUG 200223530

Change-Id: I19eb61578d1c562be84e20ecaff9fb3bc9ace516
Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
Reviewed-on: http://git-master/r/1193726
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

2 files changed, 12 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 35e4f0b8..a3448b2c 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -5436,6 +5436,16 @@ static int gk20a_gr_handle_semaphore_pending(struct gk20a *g,
         struct fifo_gk20a *f = &g->fifo;
         struct channel_gk20a *ch = &f->channel[isr_data->chid];
 
+        if (gk20a_is_channel_marked_as_tsg(ch)) {
+                struct tsg_gk20a *tsg = &g->fifo.tsg[ch->tsgid];
+
+                gk20a_tsg_event_id_post_event(tsg,
+                        NVGPU_IOCTL_CHANNEL_EVENT_ID_GR_SEMAPHORE_WRITE_AWAKEN);
+        } else {
+                gk20a_channel_event_id_post_event(ch,
+                        NVGPU_IOCTL_CHANNEL_EVENT_ID_GR_SEMAPHORE_WRITE_AWAKEN);
+        }
+
         wake_up_interruptible_all(&ch->semaphore_wq);
 
         return 0;
diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index fe4e6de9..e65c8d74 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -1138,7 +1138,8 @@ struct nvgpu_event_id_ctrl_args {
 #define NVGPU_IOCTL_CHANNEL_EVENT_ID_BPT_INT            0
 #define NVGPU_IOCTL_CHANNEL_EVENT_ID_BPT_PAUSE          1
 #define NVGPU_IOCTL_CHANNEL_EVENT_ID_BLOCKING_SYNC      2
-#define NVGPU_IOCTL_CHANNEL_EVENT_ID_MAX                5
+#define NVGPU_IOCTL_CHANNEL_EVENT_ID_GR_SEMAPHORE_WRITE_AWAKEN  5
+#define NVGPU_IOCTL_CHANNEL_EVENT_ID_MAX                6
 
 #define NVGPU_IOCTL_CHANNEL_EVENT_ID_CMD_ENABLE         1