gpu: nvgpu: add fuse overrides for tpc disabling

- add fuse_override in gops. Implement it starting from gm20b.
- set cwd fs register, so cuda won't use disabled TPCs

Bug 1757262
Bug 200169697

Change-Id: If7bac58bd3a6bcf2925197ea5b7c2d10a77e0933
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
(cherry picked from commit 66cde7724815e9e5e85ab9b07fc985a78530222f)
Reviewed-on: http://git-master/r/1132177
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
Tested-by: Adeel Raza <araza@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 8b645cc2..c61bb235 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -4740,6 +4740,9 @@ static int gk20a_init_gr_setup_sw(struct gk20a *g)
                 return 0;
         }
 
+        if (g->ops.gr.fuse_override)
+                g->ops.gr.fuse_override(g);
+
         gr->g = g;
 
 #if defined(CONFIG_GK20A_CYCLE_STATS)