1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright 2023 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25#ifndef __AMDGPU_SEQ64_H__
26#define __AMDGPU_SEQ64_H__
27
28#include "amdgpu_vm.h"
29
30#define AMDGPU_MAX_SEQ64_SLOTS (AMDGPU_VA_RESERVED_SEQ64_SIZE / sizeof(u64))
31
32struct amdgpu_seq64 {
33 struct amdgpu_bo *sbo;
34 u32 num_sem;
35 u64 gpu_addr;
36 u64 *cpu_base_addr;
37 DECLARE_BITMAP(used, AMDGPU_MAX_SEQ64_SLOTS);
38};
39
40void amdgpu_seq64_fini(struct amdgpu_device *adev);
41int amdgpu_seq64_init(struct amdgpu_device *adev);
42int amdgpu_seq64_alloc(struct amdgpu_device *adev, u64 *va, u64 *gpu_addr, u64 **cpu_addr);
43void amdgpu_seq64_free(struct amdgpu_device *adev, u64 gpu_addr);
44int amdgpu_seq64_map(struct amdgpu_device *adev, struct amdgpu_vm *vm,
45 struct amdgpu_bo_va **bo_va);
46void amdgpu_seq64_unmap(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv);
47
48#endif
49
50

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.h