gpu: nvgpu: gp10b: Implement L2 query

Bug 1567274

Change-Id: I0b8eaebc0949e70f6d8bfbb101048a3d95bec5e3
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/602858
Reviewed-by: Automatic_Commit_Validation_User

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
new file mode 100644
index 00000000..9f5c16ba
--- /dev/null
+++ b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
@@ -0,0 +1,47 @@
+/*
+ * GP10B L2
+ *
+ * Copyright (c) 2014, 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,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/types.h>
+
+#include "gk20a/gk20a.h"
+#include "gm20b/ltc_gm20b.h"
+#include "hw_ltc_gp10b.h"
+
+static int gp10b_determine_L2_size_bytes(struct gk20a *g)
+{
+        u32 tmp;
+        int ret;
+
+        gk20a_dbg_fn("");
+
+        tmp = gk20a_readl(g, ltc_ltc0_lts0_tstg_info_1_r());
+
+        ret = g->ltc_count *
+                ltc_ltc0_lts0_tstg_info_1_slice_size_in_kb_v(tmp) *
+                ltc_ltc0_lts0_tstg_info_1_slices_per_l2_v(tmp);
+
+        gk20a_dbg(gpu_dbg_info, "L2 size: %d\n", ret);
+
+        gk20a_dbg_fn("done");
+
+        return ret;
+}
+
+void gp10b_init_ltc(struct gpu_ops *gops)
+{
+        gm20b_init_ltc(gops);
+
+        gops->ltc.determine_L2_size_bytes = gp10b_determine_L2_size_bytes;
+}