1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp106/mm_gp106.c b/drivers/gpu/nvgpu/gp106/mm_gp106.c
new file mode 100644
index 00000000..72122e4f
--- /dev/null
+++ b/drivers/gpu/nvgpu/gp106/mm_gp106.c
@@ -0,0 +1,43 @@
+/*
+ * GP106 memory management
+ *
+ * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "gk20a/gk20a.h"
+#include "gp10b/mm_gp10b.h"
+#include "gp106/mm_gp106.h"
+
+#include <nvgpu/hw/gp106/hw_fb_gp106.h>
+
+size_t gp106_mm_get_vidmem_size(struct gk20a *g)
+{
+        u32 range = gk20a_readl(g, fb_mmu_local_memory_range_r());
+        u32 mag = fb_mmu_local_memory_range_lower_mag_v(range);
+        u32 scale = fb_mmu_local_memory_range_lower_scale_v(range);
+        u32 ecc = fb_mmu_local_memory_range_ecc_mode_v(range);
+        size_t bytes = ((size_t)mag << scale) * SZ_1M;
+
+        if (ecc)
+                bytes = bytes / 16 * 15;
+
+        return bytes;
+}