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 <drm/task_barrier.h>
26#include "amdgpu_psp.h"
27#include "amdgpu_ras.h"
28
29struct amdgpu_hive_info {
30 struct kobject kobj;
31 uint64_t hive_id;
32 struct list_head device_list;
33 struct list_head node;
34 atomic_t number_devices;
35 struct mutex hive_lock;
36 int hi_req_count;
37 struct amdgpu_device *hi_req_gpu;
38 struct task_barrier tb;
39 enum {
40 AMDGPU_XGMI_PSTATE_MIN,
41 AMDGPU_XGMI_PSTATE_MAX_VEGA20,
42 AMDGPU_XGMI_PSTATE_UNKNOWN
43 } pstate;
44
45 struct amdgpu_reset_domain *reset_domain;
46 uint32_t device_remove_count;
47 atomic_t ras_recovery;
48};
49
50struct amdgpu_pcs_ras_field {
51 const char *err_name;
52 uint32_t pcs_err_mask;
53 uint32_t pcs_err_shift;
54};
55
56extern struct amdgpu_xgmi_ras xgmi_ras;
57struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev);
58void amdgpu_put_xgmi_hive(struct amdgpu_hive_info *hive);
59int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
60int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
61int amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
62int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
63int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
64 struct amdgpu_device *peer_adev);
65int amdgpu_xgmi_get_num_links(struct amdgpu_device *adev,
66 struct amdgpu_device *peer_adev);
67uint64_t amdgpu_xgmi_get_relative_phy_addr(struct amdgpu_device *adev,
68 uint64_t addr);
69static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
70 struct amdgpu_device *bo_adev)
71{
72 return (amdgpu_use_xgmi_p2p &&
73 adev != bo_adev &&
74 adev->gmc.xgmi.hive_id &&
75 adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id);
76}
77int amdgpu_xgmi_ras_sw_init(struct amdgpu_device *adev);
78
79#endif
80

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