gpu: nvgpu: add API to recover TSG

- add and export API "gk20a_fifo_recover_tsg()" to
  recover a TSG
- if TSG is running on any engine, then trigger MMU fault
  on those engines
- otherwise, abort each channel in TSG

- modify channel specific API engines_on_ch() to generic
  engines_on_id() which will take an ID and a flag to specify
  whether ID is for channel or TSG and return engines running
  on that ID

- modify channel specific API get_faulty_channel() to generic
  get_faulty_id_type() which will take pointers to ID and type
  of ID (either a regular channel or TSG)

- remove runlist update from recover_ch() since
  no need to touch runlist during recovery

- set error notifier first and then only abort the channels
  for TSG recovery path

- also, add necessary accessors to get engine
  status type as TSG

Bug 1470692

Change-Id: I7137f611f80916b3d256d4b0dc6e5cf1e93eef6f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/497873
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/hw_fifo_gm20b.h b/drivers/gpu/nvgpu/gm20b/hw_fifo_gm20b.h
index 09e311ef..e0f41d34 100644
--- a/drivers/gpu/nvgpu/gm20b/hw_fifo_gm20b.h
+++ b/drivers/gpu/nvgpu/gm20b/hw_fifo_gm20b.h
@@ -390,6 +390,10 @@ static inline u32 fifo_engine_status_id_type_chid_v(void)
 {
         return 0x00000000;
 }
+static inline u32 fifo_engine_status_id_type_tsgid_v(void)
+{
+        return 0x00000001;
+}
 static inline u32 fifo_engine_status_ctx_status_v(u32 r)
 {
         return (r >> 13) & 0x7;
@@ -474,6 +478,10 @@ static inline u32 fifo_pbdma_status_id_type_chid_v(void)
 {
         return 0x00000000;
 }
+static inline u32 fifo_pbdma_status_id_type_tsgid_v(void)
+{
+        return 0x00000001;
+}
 static inline u32 fifo_pbdma_status_chan_status_v(u32 r)
 {
         return (r >> 13) & 0x7;