2 * Copyright 2021 Advanced Micro Devices, Inc.
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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
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15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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24 #ifndef __AMDGPU_RESET_H__
25 #define __AMDGPU_RESET_H__
29 #define AMDGPU_RESET_MAX_HANDLERS 5
31 enum AMDGPU_RESET_FLAGS {
33 AMDGPU_NEED_FULL_RESET = 0,
34 AMDGPU_SKIP_HW_RESET = 1,
35 AMDGPU_SKIP_COREDUMP = 2,
39 enum AMDGPU_RESET_SRCS {
40 AMDGPU_RESET_SRC_UNKNOWN,
45 AMDGPU_RESET_SRC_USER,
48 struct amdgpu_reset_context {
49 enum amd_reset_method method;
50 struct amdgpu_device *reset_req_dev;
51 struct amdgpu_job *job;
52 struct amdgpu_hive_info *hive;
53 struct list_head *reset_device_list;
55 enum AMDGPU_RESET_SRCS src;
58 struct amdgpu_reset_handler {
59 enum amd_reset_method reset_method;
60 int (*prepare_env)(struct amdgpu_reset_control *reset_ctl,
61 struct amdgpu_reset_context *context);
62 int (*prepare_hwcontext)(struct amdgpu_reset_control *reset_ctl,
63 struct amdgpu_reset_context *context);
64 int (*perform_reset)(struct amdgpu_reset_control *reset_ctl,
65 struct amdgpu_reset_context *context);
66 int (*restore_hwcontext)(struct amdgpu_reset_control *reset_ctl,
67 struct amdgpu_reset_context *context);
68 int (*restore_env)(struct amdgpu_reset_control *reset_ctl,
69 struct amdgpu_reset_context *context);
71 int (*do_reset)(struct amdgpu_device *adev);
74 struct amdgpu_reset_control {
76 struct work_struct reset_work;
77 struct mutex reset_lock;
78 struct amdgpu_reset_handler *(
79 *reset_handlers)[AMDGPU_RESET_MAX_HANDLERS];
81 enum amd_reset_method active_reset;
82 struct amdgpu_reset_handler *(*get_reset_handler)(
83 struct amdgpu_reset_control *reset_ctl,
84 struct amdgpu_reset_context *context);
85 void (*async_reset)(struct work_struct *work);
89 enum amdgpu_reset_domain_type {
94 struct amdgpu_reset_domain {
96 struct workqueue_struct *wq;
97 enum amdgpu_reset_domain_type type;
98 struct rw_semaphore sem;
99 atomic_t in_gpu_reset;
103 int amdgpu_reset_init(struct amdgpu_device *adev);
104 int amdgpu_reset_fini(struct amdgpu_device *adev);
106 int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
107 struct amdgpu_reset_context *reset_context);
109 int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
110 struct amdgpu_reset_context *reset_context);
112 int amdgpu_reset_prepare_env(struct amdgpu_device *adev,
113 struct amdgpu_reset_context *reset_context);
114 int amdgpu_reset_restore_env(struct amdgpu_device *adev,
115 struct amdgpu_reset_context *reset_context);
117 struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
120 void amdgpu_reset_destroy_reset_domain(struct kref *ref);
122 static inline bool amdgpu_reset_get_reset_domain(struct amdgpu_reset_domain *domain)
124 return kref_get_unless_zero(&domain->refcount) != 0;
127 static inline void amdgpu_reset_put_reset_domain(struct amdgpu_reset_domain *domain)
130 kref_put(&domain->refcount, amdgpu_reset_destroy_reset_domain);
133 static inline bool amdgpu_reset_domain_schedule(struct amdgpu_reset_domain *domain,
134 struct work_struct *work)
136 return queue_work(domain->wq, work);
139 static inline bool amdgpu_reset_pending(struct amdgpu_reset_domain *domain)
141 lockdep_assert_held(&domain->sem);
142 return rwsem_is_contended(&domain->sem);
145 void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain);
147 void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain);
149 void amdgpu_reset_get_desc(struct amdgpu_reset_context *rst_ctxt, char *buf,
152 #define for_each_handler(i, handler, reset_ctl) \
153 for (i = 0; (i < AMDGPU_RESET_MAX_HANDLERS) && \
154 (handler = (*reset_ctl->reset_handlers)[i]); \
157 extern struct amdgpu_reset_handler xgmi_reset_on_init_handler;
158 int amdgpu_reset_do_xgmi_reset_on_init(
159 struct amdgpu_reset_context *reset_context);
161 bool amdgpu_reset_in_recovery(struct amdgpu_device *adev);