gpu: nvgpu: pg stat read update

- Added struct pmu_pg_stats_data to extract
data from multiple version of pmu pg statistics

- Added pmu_pg_stats_v2 interface to fetch
PG statistics data from PMU

- Added MSCG debugfs node to read mscg
statistics from PMU.

- Added pmu_elpg_statistics HAL support for
  gp106 PG statistics read.

- Made changes to gp104/gp106
  pmu_elpg_statistics HAL to support
  for struct pmu_pg_stats_data

JIRA DNVGPU-165

Change-Id: I2b9e89c0fae90deb45006c4478170b9a97b56603
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1252798
(cherry picked from commit 3c073b15fd991db8d65b3171b02c161294be40cd)
Reviewed-on: http://git-master/r/1271615
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gp106/pmu_gp106.c b/drivers/gpu/nvgpu/gp106/pmu_gp106.c
index eecd7351..c28073b6 100644
--- a/drivers/gpu/nvgpu/gp106/pmu_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/pmu_gp106.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -258,6 +258,23 @@ static int gp106_pg_param_init(struct gk20a *g, u32 pg_engine_id)
         return 0;
 }
 
+static void gp106_pmu_elpg_statistics(struct gk20a *g, u32 pg_engine_id,
+                struct pmu_pg_stats_data *pg_stat_data)
+{
+        struct pmu_gk20a *pmu = &g->pmu;
+        struct pmu_pg_stats_v2 stats;
+
+        pmu_copy_from_dmem(pmu,
+                pmu->stat_dmem_offset[pg_engine_id],
+                (u8 *)&stats, sizeof(struct pmu_pg_stats_v2), 0);
+
+        pg_stat_data->ingating_time = stats.total_sleep_time_us;
+        pg_stat_data->ungating_time = stats.total_non_sleep_time_us;
+        pg_stat_data->gating_cnt = stats.entry_count;
+        pg_stat_data->avg_entry_latency_us = stats.entry_latency_avg_us;
+        pg_stat_data->avg_exit_latency_us = stats.exit_latency_avg_us;
+}
+
 void gp106_init_pmu_ops(struct gpu_ops *gops)
 {
         gk20a_dbg_fn("");
@@ -279,7 +296,7 @@ void gp106_init_pmu_ops(struct gpu_ops *gops)
         gops->pmu.lspmuwprinitdone = 0;
         gops->pmu.fecsbootstrapdone = false;
         gops->pmu.write_dmatrfbase = gp10b_write_dmatrfbase;
-        gops->pmu.pmu_elpg_statistics = gp10b_pmu_elpg_statistics;
+        gops->pmu.pmu_elpg_statistics = gp106_pmu_elpg_statistics;
         gops->pmu.pmu_pg_init_param = gp106_pg_param_init;
         gops->pmu.pmu_pg_supported_engines_list = gp106_pmu_pg_engines_list;
         gops->pmu.pmu_pg_engines_feature_list = gp106_pmu_pg_feature_list;