gpu: sysfs mode for allowing access to registers

Through this sysfs entry, the register space becomes accessible.
This is be accessible root-only.

Bug 1523403

Change-Id: Ia46f130a0cfd8324c5b675d19e7cbfba9dcb17ca
Signed-off-by: sujeet baranwal <sbaranwal@nvidia.com>
Reviewed-on: http://git-master/r/454198
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/hw_ctxsw_prog_gk20a.h b/drivers/gpu/nvgpu/gk20a/hw_ctxsw_prog_gk20a.h
index 747566f0..3d9095a8 100644
--- a/drivers/gpu/nvgpu/gk20a/hw_ctxsw_prog_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/hw_ctxsw_prog_gk20a.h
@@ -214,6 +214,10 @@ static inline u32 ctxsw_prog_main_image_priv_access_map_config_mode_v(u32 r)
 {
         return (r >> 0) & 0x3;
 }
+static inline u32 ctxsw_prog_main_image_priv_access_map_config_mode_allow_all_f(void)
+{
+        return 0x0;
+}
 static inline u32 ctxsw_prog_main_image_priv_access_map_config_mode_use_map_f(void)
 {
         return 0x2;