gpu: nvgpu: add kernel APIs for TSG support

Add support to create/destroy TSGs using node "/dev/nvhost-tsg-gpu"

Provide below IOCTLs to bind/unbind channels to/from TSGs :

NVGPU_TSG_IOCTL_BIND_CHANNEL
NVGPU_TSG_IOCTL_UNBIND_CHANNEL

Bug 1470692

Change-Id: Iaf9f16a522379eb943906624548f8d28fc6d4486
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/416610

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 36697e02..4d236a70 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -83,6 +83,9 @@ struct channel_gk20a {
         bool vpr;
         pid_t pid;
 
+        int tsgid;
+        struct list_head ch_entry; /* channel's entry in TSG */
+
         struct list_head jobs;
         struct mutex jobs_lock;
         struct mutex submit_lock;