gpu: nvgpu: Disable rd_coalesce for all chips

Disable read coalescing for all chips.

Bug 200314091

Change-Id: Iaa3f58f94369ae1edae0620083eca4594be730fd
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1518308
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 58558159..4878fdd6 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -408,6 +408,7 @@ struct gpu_ops {
                 void (*resume_single_sm)(struct gk20a *g,
                                 u32 gpc, u32 tpc, u32 sm);
                 void (*resume_all_sms)(struct gk20a *g);
+                void (*disable_rd_coalesce)(struct gk20a *g);
         } gr;
         struct {
                 void (*init_hw)(struct gk20a *g);
diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 608b011a..cd1d31a5 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -4521,6 +4521,9 @@ static int gk20a_init_gr_setup_hw(struct gk20a *g)
         if (g->ops.fb.init_cbc)
                 g->ops.fb.init_cbc(g, gr);
 
+        if (g->ops.gr.disable_rd_coalesce)
+                g->ops.gr.disable_rd_coalesce(g);
+
         /* load ctx init */
         for (i = 0; i < sw_ctx_load->count; i++)
                 gk20a_writel(g, sw_ctx_load->l[i].addr,