xref: /linux/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h (revision ec63e2a4897075e427c121d863bd89c44578094f)
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 #ifndef __AMDGPU_XGMI_H__
23 #define __AMDGPU_XGMI_H__
24 
25 #include "amdgpu_psp.h"
26 
27 struct amdgpu_hive_info {
28 	uint64_t		hive_id;
29 	struct list_head	device_list;
30 	struct psp_xgmi_topology_info	topology_info;
31 	int number_devices;
32 	struct mutex hive_lock,
33 		     reset_lock;
34 };
35 
36 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock);
37 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
38 int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
39 void amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
40 
41 #endif
42