1 /* $NetBSD: amdgpu_xgmi.h,v 1.3 2021/12/19 10:59:01 riastradh Exp $ */
2
3 /*
4 * Copyright 2016 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24 #ifndef __AMDGPU_XGMI_H__
25 #define __AMDGPU_XGMI_H__
26
27 #include <drm/task_barrier.h>
28 #include "amdgpu_psp.h"
29
30 struct amdgpu_hive_info {
31 uint64_t hive_id;
32 struct list_head device_list;
33 int number_devices;
34 struct mutex hive_lock, reset_lock;
35 struct kobject *kobj;
36 #ifdef CONFIG_SYSFS
37 struct device_attribute dev_attr;
38 #endif
39 struct amdgpu_device *adev;
40 int pstate; /*0 -- low , 1 -- high , -1 unknown*/
41 struct task_barrier tb;
42 };
43
44 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock);
45 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
46 int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
47 void amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
48 int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
49 int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
50 struct amdgpu_device *peer_adev);
51 int amdgpu_xgmi_ras_late_init(struct amdgpu_device *adev);
52 void amdgpu_xgmi_ras_fini(struct amdgpu_device *adev);
53
amdgpu_xgmi_same_hive(struct amdgpu_device * adev,struct amdgpu_device * bo_adev)54 static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
55 struct amdgpu_device *bo_adev)
56 {
57 return (adev != bo_adev &&
58 adev->gmc.xgmi.hive_id &&
59 adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id);
60 }
61
62 #endif
63