gpu: nvgpu: gv11b: disable SWDX spill buffer invalidates

Disable SWDX spill buffer invalidates as is required by HW. Since this
register is context-switched, add these in the GR init sequence.

Bug 2040262

Change-Id: I0be10d12516bce6ce6f8fb0e8af5b67f8af92257
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1650563
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
index 67bd4b88..46f5ffb5 100644
--- a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
@@ -2777,6 +2777,13 @@ int gr_gv11b_init_fs_state(struct gk20a *g)
                         g->gr.fecs_feature_override_ecc_val);
         }
 
+        /* Disable SWDX spill buffer invalidates */
+        data = gk20a_readl(g, gr_gpcs_swdx_spill_unit_r());
+        data = set_field(
+                data, gr_gpcs_swdx_spill_unit_spill_buffer_cache_mgmt_mode_m(),
+                gr_gpcs_swdx_spill_unit_spill_buffer_cache_mgmt_mode_disabled_f());
+        gk20a_writel(g, gr_gpcs_swdx_spill_unit_r(), data);
+
         err = gr_gk20a_init_fs_state(g);
         if (err)
                 return err;