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, 10 insertions, 0 deletions

diff --git a/include/linux/tegra_vgpu.h b/include/linux/tegra_vgpu.h
index 4f1c7926..9ecc44a7 100644
--- a/include/linux/tegra_vgpu.h
+++ b/include/linux/tegra_vgpu.h
@@ -99,6 +99,8 @@ enum {
         TEGRA_VGPU_CMD_CHANNEL_CYCLESTATS_SNAPSHOT = 63,
         TEGRA_VGPU_CMD_TSG_OPEN = 64,
         TEGRA_VGPU_CMD_GET_GPU_LOAD = 65,
+        TEGRA_VGPU_CMD_SUSPEND_CONTEXTS = 66,
+        TEGRA_VGPU_CMD_RESUME_CONTEXTS = 67,
 };
 
 struct tegra_vgpu_connect_params {
@@ -454,6 +456,12 @@ struct tegra_vgpu_gpu_load_params {
         u32 load;
 };
 
+struct tegra_vgpu_suspend_resume_contexts {
+        u32 num_channels;
+        u16 resident_chid;
+        u16 chids[];
+};
+
 struct tegra_vgpu_cmd_msg {
         u32 cmd;
         int ret;
@@ -500,6 +508,8 @@ struct tegra_vgpu_cmd_msg {
                 struct tegra_vgpu_constants_params constants;
                 struct tegra_vgpu_channel_cyclestats_snapshot_params cyclestats_snapshot;
                 struct tegra_vgpu_gpu_load_params gpu_load;
+                struct tegra_vgpu_suspend_resume_contexts suspend_contexts;
+                struct tegra_vgpu_suspend_resume_contexts resume_contexts;
                 char padding[192];
         } params;
 };