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
27struct 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
38struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock);
39int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
40int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
41void amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
42int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
43int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
44		struct amdgpu_device *peer_adev);
45
46static 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