diff options
Diffstat (limited to 'drivers/gpu/nvgpu/gp106/mm_gp106.c')
-rw-r--r-- | drivers/gpu/nvgpu/gp106/mm_gp106.c | 41 |
1 files changed, 41 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..3309a0d7 --- /dev/null +++ b/drivers/gpu/nvgpu/gp106/mm_gp106.c | |||
@@ -0,0 +1,41 @@ | |||
1 | /* | ||
2 | * GP106 memory management | ||
3 | * | ||
4 | * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify it | ||
7 | * under the terms and conditions of the GNU General Public License, | ||
8 | * version 2, as published by the Free Software Foundation. | ||
9 | * | ||
10 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
13 | * more details. | ||
14 | */ | ||
15 | |||
16 | #include "gk20a/gk20a.h" | ||
17 | #include "gp10b/mm_gp10b.h" | ||
18 | #include "gp106/mm_gp106.h" | ||
19 | |||
20 | #include "hw_fb_gp106.h" | ||
21 | |||
22 | static size_t gp106_mm_get_vidmem_size(struct gk20a *g) | ||
23 | { | ||
24 | u32 range = gk20a_readl(g, fb_mmu_local_memory_range_r()); | ||
25 | u32 mag = fb_mmu_local_memory_range_lower_mag_v(range); | ||
26 | u32 scale = fb_mmu_local_memory_range_lower_scale_v(range); | ||
27 | u32 ecc = fb_mmu_local_memory_range_ecc_mode_v(range); | ||
28 | size_t bytes = ((size_t)mag << scale) * SZ_1M; | ||
29 | |||
30 | if (ecc) | ||
31 | bytes = bytes / 16 * 15; | ||
32 | |||
33 | return bytes; | ||
34 | } | ||
35 | |||
36 | void gp106_init_mm(struct gpu_ops *gops) | ||
37 | { | ||
38 | gp10b_init_mm(gops); | ||
39 | gops->mm.get_vidmem_size = gp106_mm_get_vidmem_size; | ||
40 | gops->mm.get_physical_addr_bits = NULL; | ||
41 | } | ||