gpu: nvgpu: gp10b: Fix clipping of alpha/beta size

Alpha and beta sizes need to be clipped to a maximum value. For
alpha CB we were using beta size in clipping, and for both we were
not using number of TPCs to determine the max value.

Change-Id: I0c925464ba4c9f575e6e59dd5ba7759aa1cb6381
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/752667
Reviewed-by: Automatic_Commit_Validation_User

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
index c6f5022b..045847b2 100644
--- a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
@@ -267,9 +267,9 @@ static int gr_gp10b_calc_global_ctx_buffer_size(struct gk20a *g)
                 + (gr->alpha_cb_default_size >> 1);
 
         gr->attrib_cb_size = min(gr->attrib_cb_size,
-                                 gr_gpc0_ppc0_cbm_beta_cb_size_v_f(0xffffffff));
-        gr->alpha_cb_size = min(gr->attrib_cb_size,
-                                 gr_gpc0_ppc0_cbm_alpha_cb_size_v_f(0xffffffff));
+                 gr_gpc0_ppc0_cbm_beta_cb_size_v_f(~0) / g->gr.tpc_count);
+        gr->alpha_cb_size = min(gr->alpha_cb_size,
+                 gr_gpc0_ppc0_cbm_alpha_cb_size_v_f(~0) / g->gr.tpc_count);
 
         size = gr->attrib_cb_size *
                 gr_gpc0_ppc0_cbm_beta_cb_size_v_granularity_v() *