gpu: nvgpu: set correct timeslice value

Scale timeslice register value based on platform
specific ptimer scale koefficient.

Expose timeslice values through debugfs to simplify performance
tuning.

bug 1605552
bug 1603226

Change-Id: I49f86f22d58d26a366ee1b5f5a9ab9d7f896ad25
Signed-off-by: Kirill Artamonov <kartamonov@nvidia.com>
Reviewed-on: http://git-master/r/800007
(cherry picked from commit 00c85ef24cf28ffaa81eb53fff7edef1c699220a)
Reviewed-on: http://git-master/r/808251
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 8290e7e7..bec2d2a0 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -491,6 +491,11 @@ struct gk20a {
         u32 ch_wdt_enabled;
         struct mutex ch_wdt_lock;
 
+        /* Channel priorities */
+        u32 timeslice_low_priority_us;
+        u32 timeslice_medium_priority_us;
+        u32 timeslice_high_priority_us;
+
         bool slcg_enabled;
         bool blcg_enabled;
         bool elcg_enabled;
@@ -510,6 +515,10 @@ struct gk20a {
         struct dentry *debugfs_bypass_smmu;
         struct dentry *debugfs_disable_bigpage;
         struct dentry *debugfs_gr_default_attrib_cb_size;
+
+        struct dentry * debugfs_timeslice_low_priority_us;
+        struct dentry * debugfs_timeslice_medium_priority_us;
+        struct dentry * debugfs_timeslice_high_priority_us;
 #endif
         struct gk20a_ctxsw_ucode_info ctxsw_ucode_info;