1 | /* |
2 | * Copyright 2017 Advanced Micro Devices, Inc. |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
5 | * copy of this software and associated documentation files (the "Software"), |
6 | * to deal in the Software without restriction, including without limitation |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
8 | * and/or sell copies of the Software, and to permit persons to whom the |
9 | * Software is furnished to do so, subject to the following conditions: |
10 | * |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
20 | * OTHER DEALINGS IN THE SOFTWARE. |
21 | * |
22 | */ |
23 | |
24 | #ifndef __AMDGPU_GART_H__ |
25 | #define __AMDGPU_GART_H__ |
26 | |
27 | #include <linux/types.h> |
28 | |
29 | /* |
30 | * GART structures, functions & helpers |
31 | */ |
32 | struct amdgpu_device; |
33 | struct amdgpu_bo; |
34 | |
35 | #define AMDGPU_GPU_PAGE_SIZE 4096 |
36 | #define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1) |
37 | #define AMDGPU_GPU_PAGE_SHIFT 12 |
38 | #define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK) |
39 | |
40 | #define AMDGPU_GPU_PAGES_IN_CPU_PAGE (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE) |
41 | |
42 | struct amdgpu_gart { |
43 | struct amdgpu_bo *bo; |
44 | /* CPU kmapped address of gart table */ |
45 | void *ptr; |
46 | unsigned num_gpu_pages; |
47 | unsigned num_cpu_pages; |
48 | unsigned table_size; |
49 | |
50 | /* Asic default pte flags */ |
51 | uint64_t gart_pte_flags; |
52 | }; |
53 | |
54 | int amdgpu_gart_table_ram_alloc(struct amdgpu_device *adev); |
55 | void amdgpu_gart_table_ram_free(struct amdgpu_device *adev); |
56 | int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev); |
57 | void amdgpu_gart_table_vram_free(struct amdgpu_device *adev); |
58 | int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev); |
59 | void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev); |
60 | int amdgpu_gart_init(struct amdgpu_device *adev); |
61 | void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev); |
62 | void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, |
63 | int pages); |
64 | void amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset, |
65 | int pages, dma_addr_t *dma_addr, uint64_t flags, |
66 | void *dst); |
67 | void amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset, |
68 | int pages, dma_addr_t *dma_addr, uint64_t flags); |
69 | void amdgpu_gart_invalidate_tlb(struct amdgpu_device *adev); |
70 | #endif |
71 | |