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 int number_devices;
31 struct mutex hive_lock, reset_lock;
32 struct kobject *kobj;
33 struct device_attribute dev_attr;
34 struct amdgpu_device *adev;
35 int pstate; /*0 -- low , 1 -- high , -1 unknown*/
36 };
37
38 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock);
39 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
40 int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
41 void amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
42 int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
43 int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
44 struct amdgpu_device *peer_adev);
45
46 static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
47 struct amdgpu_device *bo_adev)
48 {
49 return (adev != bo_adev &&
50 adev->gmc.xgmi.hive_id &&
51 adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id);
52 }
53
54 #endif