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 int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
33 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
34 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
35 #ifdef CONFIG_SCSI_LOGGING
36 void scsi_log_send(struct scsi_cmnd *cmd);
37 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
39 static inline void scsi_log_send(struct scsi_cmnd *cmd)
41 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
47 /* list of keys for the lists */
49 SCSI_DEVINFO_GLOBAL = 0,
53 extern int scsi_get_device_flags(struct scsi_device *sdev,
54 const unsigned char *vendor,
55 const unsigned char *model);
56 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
57 const unsigned char *vendor,
58 const unsigned char *model, int key);
59 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
60 char *model, char *strflags,
62 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
63 extern int scsi_dev_info_add_list(int key, const char *name);
64 extern int scsi_dev_info_remove_list(int key);
66 extern int __init scsi_init_devinfo(void);
67 extern void scsi_exit_devinfo(void);
70 extern void scmd_eh_abort_handler(struct work_struct *work);
71 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
72 extern int scsi_error_handler(void *host);
73 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
74 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
75 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
76 void scsi_eh_ready_devs(struct Scsi_Host *shost,
77 struct list_head *work_q,
78 struct list_head *done_q);
79 int scsi_eh_get_sense(struct list_head *work_q,
80 struct list_head *done_q);
81 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
84 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
85 extern void scsi_device_unbusy(struct scsi_device *sdev);
86 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
87 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
88 extern void scsi_run_host_queues(struct Scsi_Host *shost);
89 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
90 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
91 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
92 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
93 extern int scsi_init_queue(void);
94 extern void scsi_exit_queue(void);
97 extern struct kmem_cache *scsi_sdb_cache;
100 #ifdef CONFIG_SCSI_PROC_FS
101 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
102 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
103 extern void scsi_proc_host_add(struct Scsi_Host *);
104 extern void scsi_proc_host_rm(struct Scsi_Host *);
105 extern int scsi_init_procfs(void);
106 extern void scsi_exit_procfs(void);
108 # define scsi_proc_hostdir_add(sht) do { } while (0)
109 # define scsi_proc_hostdir_rm(sht) do { } while (0)
110 # define scsi_proc_host_add(shost) do { } while (0)
111 # define scsi_proc_host_rm(shost) do { } while (0)
112 # define scsi_init_procfs() (0)
113 # define scsi_exit_procfs() do { } while (0)
114 #endif /* CONFIG_PROC_FS */
117 extern char scsi_scan_type[];
118 extern int scsi_complete_async_scans(void);
119 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
120 unsigned int, u64, int);
121 extern void scsi_forget_host(struct Scsi_Host *);
122 extern void scsi_rescan_device(struct device *);
126 extern int scsi_init_sysctl(void);
127 extern void scsi_exit_sysctl(void);
129 # define scsi_init_sysctl() (0)
130 # define scsi_exit_sysctl() do { } while (0)
131 #endif /* CONFIG_SYSCTL */
134 extern int scsi_sysfs_add_sdev(struct scsi_device *);
135 extern int scsi_sysfs_add_host(struct Scsi_Host *);
136 extern int scsi_sysfs_register(void);
137 extern void scsi_sysfs_unregister(void);
138 extern void scsi_sysfs_device_initialize(struct scsi_device *);
139 extern int scsi_sysfs_target_initialize(struct scsi_device *);
140 extern struct scsi_transport_template blank_transport_template;
141 extern void __scsi_remove_device(struct scsi_device *);
143 extern struct bus_type scsi_bus_type;
144 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
147 #ifdef CONFIG_SCSI_NETLINK
148 extern void scsi_netlink_init(void);
149 extern void scsi_netlink_exit(void);
150 extern struct sock *scsi_nl_sock;
152 static inline void scsi_netlink_init(void) {}
153 static inline void scsi_netlink_exit(void) {}
158 extern const struct dev_pm_ops scsi_bus_pm_ops;
160 #ifdef CONFIG_PM_RUNTIME
161 extern void scsi_autopm_get_target(struct scsi_target *);
162 extern void scsi_autopm_put_target(struct scsi_target *);
163 extern int scsi_autopm_get_host(struct Scsi_Host *);
164 extern void scsi_autopm_put_host(struct Scsi_Host *);
166 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
167 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
168 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
169 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
170 #endif /* CONFIG_PM_RUNTIME */
172 extern struct async_domain scsi_sd_pm_domain;
173 extern struct async_domain scsi_sd_probe_domain;
176 * internal scsi timeout functions: for use by mid-layer and transport
180 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
181 extern int scsi_internal_device_block(struct scsi_device *sdev);
182 extern int scsi_internal_device_unblock(struct scsi_device *sdev,
183 enum scsi_device_state new_state);
185 #endif /* _SCSI_PRIV_H */