4 #include <linux/device.h>
5 #include <linux/async.h>
6 #include <scsi/scsi_device.h>
13 struct scsi_host_template;
19 * Scsi Error Handler Flags
21 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
22 #define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */
24 #define SCSI_SENSE_VALID(scmd) \
25 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
28 extern int scsi_init_hosts(void);
29 extern void scsi_exit_hosts(void);
32 extern bool scsi_use_blk_mq;
33 void scsi_free_sense_buffer(struct Scsi_Host *shost,
34 unsigned char *sense_buffer);
35 unsigned char *scsi_alloc_sense_buffer(struct Scsi_Host *shost, gfp_t gfp_mask,
37 int scsi_init_sense_cache(struct Scsi_Host *shost);
38 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
39 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
40 #ifdef CONFIG_SCSI_LOGGING
41 void scsi_log_send(struct scsi_cmnd *cmd);
42 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
44 static inline void scsi_log_send(struct scsi_cmnd *cmd)
46 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
52 /* list of keys for the lists */
54 SCSI_DEVINFO_GLOBAL = 0,
58 extern int scsi_get_device_flags(struct scsi_device *sdev,
59 const unsigned char *vendor,
60 const unsigned char *model);
61 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
62 const unsigned char *vendor,
63 const unsigned char *model, int key);
64 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
65 char *model, char *strflags,
67 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
68 extern int scsi_dev_info_add_list(int key, const char *name);
69 extern int scsi_dev_info_remove_list(int key);
71 extern int __init scsi_init_devinfo(void);
72 extern void scsi_exit_devinfo(void);
75 extern void scmd_eh_abort_handler(struct work_struct *work);
76 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
77 extern int scsi_error_handler(void *host);
78 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
79 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
80 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
81 void scsi_eh_ready_devs(struct Scsi_Host *shost,
82 struct list_head *work_q,
83 struct list_head *done_q);
84 int scsi_eh_get_sense(struct list_head *work_q,
85 struct list_head *done_q);
86 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
89 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
90 extern void scsi_device_unbusy(struct scsi_device *sdev);
91 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
92 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
93 extern void scsi_run_host_queues(struct Scsi_Host *shost);
94 extern void scsi_requeue_run_queue(struct work_struct *work);
95 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
96 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
97 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
98 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
99 extern int scsi_init_queue(void);
100 extern void scsi_exit_queue(void);
101 extern void scsi_evt_thread(struct work_struct *work);
102 struct request_queue;
104 extern struct kmem_cache *scsi_sdb_cache;
107 #ifdef CONFIG_SCSI_PROC_FS
108 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
109 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
110 extern void scsi_proc_host_add(struct Scsi_Host *);
111 extern void scsi_proc_host_rm(struct Scsi_Host *);
112 extern int scsi_init_procfs(void);
113 extern void scsi_exit_procfs(void);
115 # define scsi_proc_hostdir_add(sht) do { } while (0)
116 # define scsi_proc_hostdir_rm(sht) do { } while (0)
117 # define scsi_proc_host_add(shost) do { } while (0)
118 # define scsi_proc_host_rm(shost) do { } while (0)
119 # define scsi_init_procfs() (0)
120 # define scsi_exit_procfs() do { } while (0)
121 #endif /* CONFIG_PROC_FS */
124 extern char scsi_scan_type[];
125 extern int scsi_complete_async_scans(void);
126 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
127 unsigned int, u64, enum scsi_scan_mode);
128 extern void scsi_forget_host(struct Scsi_Host *);
129 extern void scsi_rescan_device(struct device *);
133 extern int scsi_init_sysctl(void);
134 extern void scsi_exit_sysctl(void);
136 # define scsi_init_sysctl() (0)
137 # define scsi_exit_sysctl() do { } while (0)
138 #endif /* CONFIG_SYSCTL */
141 extern int scsi_sysfs_add_sdev(struct scsi_device *);
142 extern int scsi_sysfs_add_host(struct Scsi_Host *);
143 extern int scsi_sysfs_register(void);
144 extern void scsi_sysfs_unregister(void);
145 extern void scsi_sysfs_device_initialize(struct scsi_device *);
146 extern int scsi_sysfs_target_initialize(struct scsi_device *);
147 extern struct scsi_transport_template blank_transport_template;
148 extern void __scsi_remove_device(struct scsi_device *);
150 extern struct bus_type scsi_bus_type;
151 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
154 #ifdef CONFIG_SCSI_NETLINK
155 extern void scsi_netlink_init(void);
156 extern void scsi_netlink_exit(void);
157 extern struct sock *scsi_nl_sock;
159 static inline void scsi_netlink_init(void) {}
160 static inline void scsi_netlink_exit(void) {}
165 extern const struct dev_pm_ops scsi_bus_pm_ops;
167 extern void scsi_autopm_get_target(struct scsi_target *);
168 extern void scsi_autopm_put_target(struct scsi_target *);
169 extern int scsi_autopm_get_host(struct Scsi_Host *);
170 extern void scsi_autopm_put_host(struct Scsi_Host *);
172 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
173 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
174 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
175 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
176 #endif /* CONFIG_PM */
178 extern struct async_domain scsi_sd_pm_domain;
179 extern struct async_domain scsi_sd_probe_domain;
182 #ifdef CONFIG_SCSI_DH
183 int scsi_dh_add_device(struct scsi_device *sdev);
184 void scsi_dh_release_device(struct scsi_device *sdev);
186 static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
187 static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
189 static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
192 * internal scsi timeout functions: for use by mid-layer and transport
196 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
197 extern int scsi_internal_device_block(struct scsi_device *sdev);
198 extern int scsi_internal_device_unblock(struct scsi_device *sdev,
199 enum scsi_device_state new_state);
201 #endif /* _SCSI_PRIV_H */