gpu: nvgpu: gm20b: Comptag size must use LTC count

Calculation for comptag backing store must use number of LTCs instead
of number of FBPs.

Change-Id: If0aa636e09a3d24459987e626fe53bb7c96f1b15
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/453809
Reviewed-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c b/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c
index 683aa2ac..759b1d5a 100644
--- a/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c
@@ -58,21 +58,20 @@ static int gm20b_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
         if (max_comptag_lines > hw_max_comptag_lines)
                 max_comptag_lines = hw_max_comptag_lines;
 
-        /* no hybird fb */
         compbit_backing_size =
                 DIV_ROUND_UP(max_comptag_lines, comptags_per_cacheline) *
-                cacheline_size * slices_per_ltc * gr->num_fbps;
+                cacheline_size * slices_per_ltc * g->ltc_count;
 
-        /* aligned to 2KB * num_fbps */
+        /* aligned to 2KB * ltc_count */
         compbit_backing_size +=
-                gr->num_fbps << ltc_ltcs_ltss_cbc_base_alignment_shift_v();
+                g->ltc_count << ltc_ltcs_ltss_cbc_base_alignment_shift_v();
 
         /* must be a multiple of 64KB */
         compbit_backing_size = roundup(compbit_backing_size, 64*1024);
 
         max_comptag_lines =
                 (compbit_backing_size * comptags_per_cacheline) /
-                cacheline_size * slices_per_ltc * gr->num_fbps;
+                cacheline_size * slices_per_ltc * g->ltc_count;
 
         if (max_comptag_lines > hw_max_comptag_lines)
                 max_comptag_lines = hw_max_comptag_lines;