2 * Copyright 2021 Advanced Micro Devices, Inc.
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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,
38 struct amdgpu_reset_context {
39 enum amd_reset_method method;
40 struct amdgpu_device *reset_req_dev;
41 struct amdgpu_job *job;
42 struct amdgpu_hive_info *hive;
43 struct list_head *reset_device_list;
47 struct amdgpu_reset_handler {
48 enum amd_reset_method reset_method;
49 int (*prepare_env)(struct amdgpu_reset_control *reset_ctl,
50 struct amdgpu_reset_context *context);
51 int (*prepare_hwcontext)(struct amdgpu_reset_control *reset_ctl,
52 struct amdgpu_reset_context *context);
53 int (*perform_reset)(struct amdgpu_reset_control *reset_ctl,
54 struct amdgpu_reset_context *context);
55 int (*restore_hwcontext)(struct amdgpu_reset_control *reset_ctl,
56 struct amdgpu_reset_context *context);
57 int (*restore_env)(struct amdgpu_reset_control *reset_ctl,
58 struct amdgpu_reset_context *context);
60 int (*do_reset)(struct amdgpu_device *adev);
63 struct amdgpu_reset_control {
65 struct work_struct reset_work;
66 struct mutex reset_lock;
67 struct amdgpu_reset_handler *(
68 *reset_handlers)[AMDGPU_RESET_MAX_HANDLERS];
70 enum amd_reset_method active_reset;
71 struct amdgpu_reset_handler *(*get_reset_handler)(
72 struct amdgpu_reset_control *reset_ctl,
73 struct amdgpu_reset_context *context);
74 void (*async_reset)(struct work_struct *work);
78 enum amdgpu_reset_domain_type {
83 struct amdgpu_reset_domain {
85 struct workqueue_struct *wq;
86 enum amdgpu_reset_domain_type type;
87 struct rw_semaphore sem;
88 atomic_t in_gpu_reset;
92 int amdgpu_reset_init(struct amdgpu_device *adev);
93 int amdgpu_reset_fini(struct amdgpu_device *adev);
95 int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
96 struct amdgpu_reset_context *reset_context);
98 int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
99 struct amdgpu_reset_context *reset_context);
101 int amdgpu_reset_prepare_env(struct amdgpu_device *adev,
102 struct amdgpu_reset_context *reset_context);
103 int amdgpu_reset_restore_env(struct amdgpu_device *adev,
104 struct amdgpu_reset_context *reset_context);
106 struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
109 void amdgpu_reset_destroy_reset_domain(struct kref *ref);
111 static inline bool amdgpu_reset_get_reset_domain(struct amdgpu_reset_domain *domain)
113 return kref_get_unless_zero(&domain->refcount) != 0;
116 static inline void amdgpu_reset_put_reset_domain(struct amdgpu_reset_domain *domain)
119 kref_put(&domain->refcount, amdgpu_reset_destroy_reset_domain);
122 static inline bool amdgpu_reset_domain_schedule(struct amdgpu_reset_domain *domain,
123 struct work_struct *work)
125 return queue_work(domain->wq, work);
128 void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain);
130 void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain);
132 #define for_each_handler(i, handler, reset_ctl) \
133 for (i = 0; (i < AMDGPU_RESET_MAX_HANDLERS) && \
134 (handler = (*reset_ctl->reset_handlers)[i]); \