gpu: nvgpu: vgpu: suspend/resume contexts

Add ability to suspend/resume contexts for a debug session
(NVGPU_DBG_GPU_IOCTL_SUSPEND_RESUME_CONTEXTS), in virtualized
case:
- added hal function to resume contexts.
- added vgpu support for suspend contexts, i.e. build a list
of channel ids, and send TEGRA_VGPU_CMD_SUSPEND_CONTEXTS
- added vgpu support for resume contexts, i.e. build a list
of channel ids, and send TEGRA_VGPU_CMD_RESUME_CONTEXTS

Bug 1791111

Change-Id: Icc1c00d94a94dab6384ac263fb811c00fa4b07bf
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1294761
(cherry picked from commit d17a38eda312ffa92ce92e5bafc30727a8b76c4e)
Reviewed-on: http://git-master/r/1299059
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Cory Perry <cperry@nvidia.com>
Tested-by: Cory Perry <cperry@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/gr_gm20b.c b/drivers/gpu/nvgpu/gm20b/gr_gm20b.c
index de3f879a..5b5fa82c 100644
--- a/drivers/gpu/nvgpu/gm20b/gr_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/gr_gm20b.c
@@ -1589,6 +1589,7 @@ void gm20b_init_gr(struct gpu_ops *gops)
         gops->gr.update_sm_error_state = gm20b_gr_update_sm_error_state;
         gops->gr.clear_sm_error_state = gm20b_gr_clear_sm_error_state;
         gops->gr.suspend_contexts = gr_gk20a_suspend_contexts;
+        gops->gr.resume_contexts = gr_gk20a_resume_contexts;
         gops->gr.get_preemption_mode_flags = gr_gm20b_get_preemption_mode_flags;
         gops->gr.fuse_override = gm20b_gr_fuse_override;
         gops->gr.init_sm_id_table = gr_gk20a_init_sm_id_table;