gpu: nvgpu: gv11b: Enable perfmon.

t19x PMU ucode uses RPC mechanism for
PERFMON commands.

- Declared  "pmu_init_perfmon",
  "pmu_perfmon_start_sampling",
  "pmu_perfmon_stop_sampling" and
  "pmu_perfmon_get_samples" in pmu ops
  to differenciate for chips using RPC & legacy
  cmd/msg mechanism.
- Defined and used PERFMON RPC commands for t19x
  	- INIT
	- START
	- STOP
	- QUERY
- Adds RPC handler for PERFMON RPC commands.
- For guerying GPU utilization/load, we need to send PERFMON_QUERY
  RPC command for gv11b.
- Enables perfmon for gv11b.

Bug 2039013

Change-Id: Ic32326f81d48f11bc772afb8fee2dee6e427a699
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1614114
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Tested-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

4 files changed, 10 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/debug_pmu.c b/drivers/gpu/nvgpu/common/linux/debug_pmu.c
index ec997e28..a8a8870e 100644
--- a/drivers/gpu/nvgpu/common/linux/debug_pmu.c
+++ b/drivers/gpu/nvgpu/common/linux/debug_pmu.c
@@ -352,11 +352,11 @@ static ssize_t perfmon_events_enable_write(struct file *file,
                 if (val && !g->pmu.perfmon_sampling_enabled &&
                                 nvgpu_is_enabled(g, NVGPU_PMU_PERFMON)) {
                         g->pmu.perfmon_sampling_enabled = true;
-                        nvgpu_pmu_perfmon_start_sampling(&(g->pmu));
+                        g->ops.pmu.pmu_perfmon_start_sampling(&(g->pmu));
                 } else if (!val && g->pmu.perfmon_sampling_enabled &&
                                 nvgpu_is_enabled(g, NVGPU_PMU_PERFMON)) {
                         g->pmu.perfmon_sampling_enabled = false;
-                        nvgpu_pmu_perfmon_stop_sampling(&(g->pmu));
+                        g->ops.pmu.pmu_perfmon_stop_sampling(&(g->pmu));
                 }
                 gk20a_idle(g);
         } else {
diff --git a/drivers/gpu/nvgpu/common/linux/platform_gv11b_tegra.c b/drivers/gpu/nvgpu/common/linux/platform_gv11b_tegra.c
index d972b88a..a452896f 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gv11b_tegra.c
+++ b/drivers/gpu/nvgpu/common/linux/platform_gv11b_tegra.c
@@ -208,6 +208,7 @@ struct gk20a_platform t19x_gpu_tegra_platform = {
         .can_slcg               = false,
         .can_blcg               = false,
         .can_elcg               = false,
+        .enable_perfmon         = true,
 
         /* power management callbacks */
         .suspend = gv11b_tegra_suspend,
diff --git a/drivers/gpu/nvgpu/common/linux/vgpu/gp10b/vgpu_hal_gp10b.c b/drivers/gpu/nvgpu/common/linux/vgpu/gp10b/vgpu_hal_gp10b.c
index d5fd5102..3f99eb9e 100644
--- a/drivers/gpu/nvgpu/common/linux/vgpu/gp10b/vgpu_hal_gp10b.c
+++ b/drivers/gpu/nvgpu/common/linux/vgpu/gp10b/vgpu_hal_gp10b.c
@@ -417,6 +417,9 @@ static const struct gpu_ops vgpu_gp10b_ops = {
                 .pmu_mutex_release = gk20a_pmu_mutex_release,
                 .write_dmatrfbase = gp10b_write_dmatrfbase,
                 .pmu_elpg_statistics = gp10b_pmu_elpg_statistics,
+                .pmu_init_perfmon = nvgpu_pmu_init_perfmon,
+                .pmu_perfmon_start_sampling = nvgpu_pmu_perfmon_start_sampling,
+                .pmu_perfmon_stop_sampling = nvgpu_pmu_perfmon_stop_sampling,
                 .pmu_pg_init_param = gp10b_pg_gr_init,
                 .pmu_pg_supported_engines_list = gk20a_pmu_pg_engines_list,
                 .pmu_pg_engines_feature_list = gk20a_pmu_pg_feature_list,
diff --git a/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_hal_gv11b.c b/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_hal_gv11b.c
index 132ce6e5..c8752f91 100644
--- a/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_hal_gv11b.c
+++ b/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_hal_gv11b.c
@@ -461,6 +461,10 @@ static const struct gpu_ops vgpu_gv11b_ops = {
                 .pmu_mutex_release = gk20a_pmu_mutex_release,
                 .write_dmatrfbase = gp10b_write_dmatrfbase,
                 .pmu_elpg_statistics = gp106_pmu_elpg_statistics,
+                .pmu_init_perfmon = nvgpu_pmu_init_perfmon_rpc,
+                .pmu_perfmon_start_sampling = nvgpu_pmu_perfmon_start_sampling_rpc,
+                .pmu_perfmon_stop_sampling = nvgpu_pmu_perfmon_stop_sampling_rpc,
+                .pmu_perfmon_get_samples_rpc = nvgpu_pmu_perfmon_get_samples_rpc,
                 .pmu_pg_init_param = gv11b_pg_gr_init,
                 .pmu_pg_supported_engines_list = gk20a_pmu_pg_engines_list,
                 .pmu_pg_engines_feature_list = gk20a_pmu_pg_feature_list,