2 * Copyright 2016 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 #ifndef __AMDGPU_XGMI_H__
23 #define __AMDGPU_XGMI_H__
25 #include <drm/task_barrier.h>
26 #include "amdgpu_psp.h"
27 #include "amdgpu_ras.h"
29 struct amdgpu_hive_info {
32 struct list_head device_list;
33 struct list_head node;
34 atomic_t number_devices;
35 struct mutex hive_lock;
37 struct amdgpu_device *hi_req_gpu;
38 struct task_barrier tb;
40 AMDGPU_XGMI_PSTATE_MIN,
41 AMDGPU_XGMI_PSTATE_MAX_VEGA20,
42 AMDGPU_XGMI_PSTATE_UNKNOWN
45 struct amdgpu_reset_domain *reset_domain;
46 atomic_t ras_recovery;
47 struct ras_event_manager event_mgr;
48 struct work_struct reset_on_init_work;
49 atomic_t requested_nps_mode;
52 struct amdgpu_pcs_ras_field {
54 uint32_t pcs_err_mask;
55 uint32_t pcs_err_shift;
58 extern struct amdgpu_xgmi_ras xgmi_ras;
59 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev);
60 void amdgpu_put_xgmi_hive(struct amdgpu_hive_info *hive);
61 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
62 int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
63 int amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
64 int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
65 int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
66 struct amdgpu_device *peer_adev);
67 int amdgpu_xgmi_get_num_links(struct amdgpu_device *adev,
68 struct amdgpu_device *peer_adev);
69 bool amdgpu_xgmi_get_is_sharing_enabled(struct amdgpu_device *adev,
70 struct amdgpu_device *peer_adev);
71 uint64_t amdgpu_xgmi_get_relative_phy_addr(struct amdgpu_device *adev,
73 static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
74 struct amdgpu_device *bo_adev)
76 return (amdgpu_use_xgmi_p2p &&
78 adev->gmc.xgmi.hive_id &&
79 adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id);
81 int amdgpu_xgmi_ras_sw_init(struct amdgpu_device *adev);
82 int amdgpu_xgmi_reset_on_init(struct amdgpu_device *adev);
84 int amdgpu_xgmi_request_nps_change(struct amdgpu_device *adev,
85 struct amdgpu_hive_info *hive,
87 int amdgpu_get_xgmi_link_status(struct amdgpu_device *adev,