Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright 2021 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 */
23
24#include "amdgpu_reset.h"
25#include "aldebaran.h"
26#include "sienna_cichlid.h"
27#include "smu_v13_0_10.h"
28
29int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
30 struct amdgpu_reset_handler *handler)
31{
32 /* TODO: Check if handler exists? */
33 list_add_tail(&handler->handler_list, &reset_ctl->reset_handlers);
34 return 0;
35}
36
37int amdgpu_reset_init(struct amdgpu_device *adev)
38{
39 int ret = 0;
40
41 switch (adev->ip_versions[MP1_HWIP][0]) {
42 case IP_VERSION(13, 0, 2):
43 case IP_VERSION(13, 0, 6):
44 ret = aldebaran_reset_init(adev);
45 break;
46 case IP_VERSION(11, 0, 7):
47 ret = sienna_cichlid_reset_init(adev);
48 break;
49 case IP_VERSION(13, 0, 10):
50 ret = smu_v13_0_10_reset_init(adev);
51 break;
52 default:
53 break;
54 }
55
56 return ret;
57}
58
59int amdgpu_reset_fini(struct amdgpu_device *adev)
60{
61 int ret = 0;
62
63 switch (adev->ip_versions[MP1_HWIP][0]) {
64 case IP_VERSION(13, 0, 2):
65 case IP_VERSION(13, 0, 6):
66 ret = aldebaran_reset_fini(adev);
67 break;
68 case IP_VERSION(11, 0, 7):
69 ret = sienna_cichlid_reset_fini(adev);
70 break;
71 case IP_VERSION(13, 0, 10):
72 ret = smu_v13_0_10_reset_fini(adev);
73 break;
74 default:
75 break;
76 }
77
78 return ret;
79}
80
81int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
82 struct amdgpu_reset_context *reset_context)
83{
84 struct amdgpu_reset_handler *reset_handler = NULL;
85
86 if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)
87 reset_handler = adev->reset_cntl->get_reset_handler(
88 adev->reset_cntl, reset_context);
89 if (!reset_handler)
90 return -ENOSYS;
91
92 return reset_handler->prepare_hwcontext(adev->reset_cntl,
93 reset_context);
94}
95
96int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
97 struct amdgpu_reset_context *reset_context)
98{
99 int ret;
100 struct amdgpu_reset_handler *reset_handler = NULL;
101
102 if (adev->reset_cntl)
103 reset_handler = adev->reset_cntl->get_reset_handler(
104 adev->reset_cntl, reset_context);
105 if (!reset_handler)
106 return -ENOSYS;
107
108 ret = reset_handler->perform_reset(adev->reset_cntl, reset_context);
109 if (ret)
110 return ret;
111
112 return reset_handler->restore_hwcontext(adev->reset_cntl,
113 reset_context);
114}
115
116
117void amdgpu_reset_destroy_reset_domain(struct kref *ref)
118{
119 struct amdgpu_reset_domain *reset_domain = container_of(ref,
120 struct amdgpu_reset_domain,
121 refcount);
122 if (reset_domain->wq)
123 destroy_workqueue(reset_domain->wq);
124
125 kvfree(reset_domain);
126}
127
128struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
129 char *wq_name)
130{
131 struct amdgpu_reset_domain *reset_domain;
132
133 reset_domain = kvzalloc(sizeof(struct amdgpu_reset_domain), GFP_KERNEL);
134 if (!reset_domain) {
135 DRM_ERROR("Failed to allocate amdgpu_reset_domain!");
136 return NULL;
137 }
138
139 reset_domain->type = type;
140 kref_init(&reset_domain->refcount);
141
142 reset_domain->wq = create_singlethread_workqueue(wq_name);
143 if (!reset_domain->wq) {
144 DRM_ERROR("Failed to allocate wq for amdgpu_reset_domain!");
145 amdgpu_reset_put_reset_domain(reset_domain);
146 return NULL;
147
148 }
149
150 atomic_set(&reset_domain->in_gpu_reset, 0);
151 atomic_set(&reset_domain->reset_res, 0);
152 init_rwsem(&reset_domain->sem);
153
154 return reset_domain;
155}
156
157void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain)
158{
159 atomic_set(&reset_domain->in_gpu_reset, 1);
160 down_write(&reset_domain->sem);
161}
162
163
164void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain)
165{
166 atomic_set(&reset_domain->in_gpu_reset, 0);
167 up_write(&reset_domain->sem);
168}
169
170
171