gpu: nvgpu: support tuning per-ch deterministic opts

Add a new ioctl NVGPU_GPU_IOCTL_SET_DETERMINISTIC_OPTS to adjust
deterministic options on a per-channel basis. Currently, the only
supported option is to relax the no-railgating requirement on open
deterministic channels. This also disallows submits on such channels,
until the railgate option is reset.

Bug 200327089

Change-Id: If4f0f51fd1d40ad7407d13638150d7402479aff0
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1554563
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index e8db9d2c..756db415 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -439,6 +439,8 @@ int gk20a_init_gpu_characteristics(struct gk20a *g)
                                 NVGPU_SUPPORT_DETERMINISTIC_SUBMIT_FULL,
                                 true);
 
+        __nvgpu_set_enabled(g, NVGPU_SUPPORT_DETERMINISTIC_OPTS, true);
+
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_USERSPACE_MANAGED_AS, true);
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_TSG, true);