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
amdgpu_reset_init(struct amdgpu_device * adev)29 int amdgpu_reset_init(struct amdgpu_device *adev)
30 {
31 int ret = 0;
32
33 switch (amdgpu_ip_version(adev, MP1_HWIP, 0)) {
34 case IP_VERSION(13, 0, 2):
35 case IP_VERSION(13, 0, 6):
36 case IP_VERSION(13, 0, 14):
37 ret = aldebaran_reset_init(adev);
38 break;
39 case IP_VERSION(11, 0, 7):
40 ret = sienna_cichlid_reset_init(adev);
41 break;
42 case IP_VERSION(13, 0, 10):
43 ret = smu_v13_0_10_reset_init(adev);
44 break;
45 default:
46 break;
47 }
48
49 return ret;
50 }
51
amdgpu_reset_fini(struct amdgpu_device * adev)52 int amdgpu_reset_fini(struct amdgpu_device *adev)
53 {
54 int ret = 0;
55
56 switch (amdgpu_ip_version(adev, MP1_HWIP, 0)) {
57 case IP_VERSION(13, 0, 2):
58 case IP_VERSION(13, 0, 6):
59 case IP_VERSION(13, 0, 14):
60 ret = aldebaran_reset_fini(adev);
61 break;
62 case IP_VERSION(11, 0, 7):
63 ret = sienna_cichlid_reset_fini(adev);
64 break;
65 case IP_VERSION(13, 0, 10):
66 ret = smu_v13_0_10_reset_fini(adev);
67 break;
68 default:
69 break;
70 }
71
72 return ret;
73 }
74
amdgpu_reset_prepare_hwcontext(struct amdgpu_device * adev,struct amdgpu_reset_context * reset_context)75 int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
76 struct amdgpu_reset_context *reset_context)
77 {
78 struct amdgpu_reset_handler *reset_handler = NULL;
79
80 if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)
81 reset_handler = adev->reset_cntl->get_reset_handler(
82 adev->reset_cntl, reset_context);
83 if (!reset_handler)
84 return -EOPNOTSUPP;
85
86 return reset_handler->prepare_hwcontext(adev->reset_cntl,
87 reset_context);
88 }
89
amdgpu_reset_perform_reset(struct amdgpu_device * adev,struct amdgpu_reset_context * reset_context)90 int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
91 struct amdgpu_reset_context *reset_context)
92 {
93 int ret;
94 struct amdgpu_reset_handler *reset_handler = NULL;
95
96 if (adev->reset_cntl)
97 reset_handler = adev->reset_cntl->get_reset_handler(
98 adev->reset_cntl, reset_context);
99 if (!reset_handler)
100 return -EOPNOTSUPP;
101
102 ret = reset_handler->perform_reset(adev->reset_cntl, reset_context);
103 if (ret)
104 return ret;
105
106 return reset_handler->restore_hwcontext(adev->reset_cntl,
107 reset_context);
108 }
109
110
amdgpu_reset_destroy_reset_domain(struct kref * ref)111 void amdgpu_reset_destroy_reset_domain(struct kref *ref)
112 {
113 struct amdgpu_reset_domain *reset_domain = container_of(ref,
114 struct amdgpu_reset_domain,
115 refcount);
116 if (reset_domain->wq)
117 destroy_workqueue(reset_domain->wq);
118
119 kvfree(reset_domain);
120 }
121
amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,char * wq_name)122 struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
123 char *wq_name)
124 {
125 struct amdgpu_reset_domain *reset_domain;
126
127 reset_domain = kvzalloc(sizeof(struct amdgpu_reset_domain), GFP_KERNEL);
128 if (!reset_domain) {
129 DRM_ERROR("Failed to allocate amdgpu_reset_domain!");
130 return NULL;
131 }
132
133 reset_domain->type = type;
134 kref_init(&reset_domain->refcount);
135
136 reset_domain->wq = create_singlethread_workqueue(wq_name);
137 if (!reset_domain->wq) {
138 DRM_ERROR("Failed to allocate wq for amdgpu_reset_domain!");
139 amdgpu_reset_put_reset_domain(reset_domain);
140 return NULL;
141
142 }
143
144 atomic_set(&reset_domain->in_gpu_reset, 0);
145 atomic_set(&reset_domain->reset_res, 0);
146 init_rwsem(&reset_domain->sem);
147
148 return reset_domain;
149 }
150
amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain * reset_domain)151 void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain)
152 {
153 atomic_set(&reset_domain->in_gpu_reset, 1);
154 down_write(&reset_domain->sem);
155 }
156
157
amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain * reset_domain)158 void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain)
159 {
160 atomic_set(&reset_domain->in_gpu_reset, 0);
161 up_write(&reset_domain->sem);
162 }
163
amdgpu_reset_get_desc(struct amdgpu_reset_context * rst_ctxt,char * buf,size_t len)164 void amdgpu_reset_get_desc(struct amdgpu_reset_context *rst_ctxt, char *buf,
165 size_t len)
166 {
167 if (!buf || !len)
168 return;
169
170 switch (rst_ctxt->src) {
171 case AMDGPU_RESET_SRC_JOB:
172 if (rst_ctxt->job) {
173 snprintf(buf, len, "job hang on ring:%s",
174 rst_ctxt->job->base.sched->name);
175 } else {
176 strscpy(buf, "job hang", len);
177 }
178 break;
179 case AMDGPU_RESET_SRC_RAS:
180 strscpy(buf, "RAS error", len);
181 break;
182 case AMDGPU_RESET_SRC_MES:
183 strscpy(buf, "MES hang", len);
184 break;
185 case AMDGPU_RESET_SRC_HWS:
186 strscpy(buf, "HWS hang", len);
187 break;
188 case AMDGPU_RESET_SRC_USER:
189 strscpy(buf, "user trigger", len);
190 break;
191 default:
192 strscpy(buf, "unknown", len);
193 }
194 }
195