gpu: nvgpu: read gobs_per_comptagline_per_slice

Add code to read NV_PLTCG_LTCS_LTSS_CBC_PARAM2_GOBS_PER_COMPTAGLINE_PER_SLICE
during t18x ltc init and store it for use in CDE code.

Change-Id: I4d4a3a6c7e3ad369d8359ff838e7040a0521b441
Signed-off-by: Jussi Rasanen <jrasanen@nvidia.com>
Reviewed-on: http://git-master/r/673150
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
index 03454240..beda3038 100644
--- a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
@@ -1,7 +1,7 @@
 /*
  * GP10B L2
  *
- * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -59,6 +59,10 @@ static int gp10b_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
                 512 << ltc_ltcs_ltss_cbc_param_cache_line_size_v(cbc_param);
         u32 slices_per_ltc =
                 ltc_ltcs_ltss_cbc_param_slices_per_ltc_v(cbc_param);
+        u32 cbc_param2 =
+                gk20a_readl(g, ltc_ltcs_ltss_cbc_param2_r());
+        u32 gobs_per_comptagline_per_slice =
+                ltc_ltcs_ltss_cbc_param2_gobs_per_comptagline_per_slice_v(cbc_param2);
 
         u32 compbit_backing_size;
 
@@ -96,6 +100,8 @@ static int gp10b_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
                 compbit_backing_size);
         gk20a_dbg_info("max comptag lines : %d",
                 max_comptag_lines);
+        gk20a_dbg_info("gobs_per_comptagline_per_slice: %d",
+                gobs_per_comptagline_per_slice);
 
         if (tegra_platform_is_linsim())
                 err = gk20a_ltc_alloc_phys_cbc(g, compbit_backing_size);
@@ -112,6 +118,7 @@ static int gp10b_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
         gr->comptags_per_cacheline = comptags_per_cacheline;
         gr->slices_per_ltc = slices_per_ltc;
         gr->cacheline_size = cacheline_size;
+        gr->gobs_per_comptagline_per_slice = gobs_per_comptagline_per_slice;
 
         return 0;
 }
@@ -136,3 +143,4 @@ void gp10b_init_ltc(struct gpu_ops *gops)
         gops->ltc.sync_debugfs = gk20a_ltc_sync_debugfs;
 #endif
 }
+