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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24 #ifndef __AMDGPU_RESET_H__
25 #define __AMDGPU_RESET_H__
29 enum AMDGPU_RESET_FLAGS {
31 AMDGPU_NEED_FULL_RESET = 0,
32 AMDGPU_SKIP_HW_RESET = 1,
33 AMDGPU_RESET_FOR_DEVICE_REMOVE = 2,
36 struct amdgpu_reset_context {
37 enum amd_reset_method method;
38 struct amdgpu_device *reset_req_dev;
39 struct amdgpu_job *job;
40 struct amdgpu_hive_info *hive;
41 struct list_head *reset_device_list;
45 struct amdgpu_reset_handler {
46 enum amd_reset_method reset_method;
47 struct list_head handler_list;
48 int (*prepare_env)(struct amdgpu_reset_control *reset_ctl,
49 struct amdgpu_reset_context *context);
50 int (*prepare_hwcontext)(struct amdgpu_reset_control *reset_ctl,
51 struct amdgpu_reset_context *context);
52 int (*perform_reset)(struct amdgpu_reset_control *reset_ctl,
53 struct amdgpu_reset_context *context);
54 int (*restore_hwcontext)(struct amdgpu_reset_control *reset_ctl,
55 struct amdgpu_reset_context *context);
56 int (*restore_env)(struct amdgpu_reset_control *reset_ctl,
57 struct amdgpu_reset_context *context);
59 int (*do_reset)(struct amdgpu_device *adev);
62 struct amdgpu_reset_control {
64 struct work_struct reset_work;
65 struct mutex reset_lock;
66 struct list_head reset_handlers;
68 enum amd_reset_method active_reset;
69 struct amdgpu_reset_handler *(*get_reset_handler)(
70 struct amdgpu_reset_control *reset_ctl,
71 struct amdgpu_reset_context *context);
72 void (*async_reset)(struct work_struct *work);
76 enum amdgpu_reset_domain_type {
81 struct amdgpu_reset_domain {
83 struct workqueue_struct *wq;
84 enum amdgpu_reset_domain_type type;
85 struct rw_semaphore sem;
86 atomic_t in_gpu_reset;
91 int amdgpu_reset_init(struct amdgpu_device *adev);
92 int amdgpu_reset_fini(struct amdgpu_device *adev);
94 int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
95 struct amdgpu_reset_context *reset_context);
97 int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
98 struct amdgpu_reset_context *reset_context);
100 int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
101 struct amdgpu_reset_handler *handler);
103 struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
106 void amdgpu_reset_destroy_reset_domain(struct kref *ref);
108 static inline bool amdgpu_reset_get_reset_domain(struct amdgpu_reset_domain *domain)
110 return kref_get_unless_zero(&domain->refcount) != 0;
113 static inline void amdgpu_reset_put_reset_domain(struct amdgpu_reset_domain *domain)
116 kref_put(&domain->refcount, amdgpu_reset_destroy_reset_domain);
119 static inline bool amdgpu_reset_domain_schedule(struct amdgpu_reset_domain *domain,
120 struct work_struct *work)
122 return queue_work(domain->wq, work);
125 void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain);
127 void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain);