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
29 struct 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 rwlock 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 };
48
49 struct amdgpu_pcs_ras_field {
50 const char *err_name;
51 uint32_t pcs_err_mask;
52 uint32_t pcs_err_shift;
53 };
54
55 extern struct amdgpu_xgmi_ras xgmi_ras;
56 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev);
57 void amdgpu_put_xgmi_hive(struct amdgpu_hive_info *hive);
58 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
59 int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
60 int amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
61 int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
62 int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
63 struct amdgpu_device *peer_adev);
64 int amdgpu_xgmi_get_num_links(struct amdgpu_device *adev,
65 struct amdgpu_device *peer_adev);
66 uint64_t amdgpu_xgmi_get_relative_phy_addr(struct amdgpu_device *adev,
67 uint64_t addr);
amdgpu_xgmi_same_hive(struct amdgpu_device * adev,struct amdgpu_device * bo_adev)68 static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
69 struct amdgpu_device *bo_adev)
70 {
71 return (amdgpu_use_xgmi_p2p &&
72 adev != bo_adev &&
73 adev->gmc.xgmi.hive_id &&
74 adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id);
75 }
76 int amdgpu_xgmi_ras_sw_init(struct amdgpu_device *adev);
77
78 #endif
79