1/*
2 * Copyright 2016 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 * Author: Monk.liu@amd.com
23 */
24
25#ifndef AMDGPU_CSA_MANAGER_H
26#define AMDGPU_CSA_MANAGER_H
27
28#define AMDGPU_CSA_SIZE (128 * 1024)
29
30uint32_t amdgpu_get_total_csa_size(struct amdgpu_device *adev);
31uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev);
32int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
33 u32 domain, uint32_t size);
34int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
35 struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va,
36 uint64_t csa_addr, uint32_t size);
37int amdgpu_unmap_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
38 struct amdgpu_bo *bo, struct amdgpu_bo_va *bo_va,
39 uint64_t csa_addr);
40void amdgpu_free_static_csa(struct amdgpu_bo **bo);
41
42#endif
43

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.h