4 #include <linux/device.h>
11 struct scsi_host_template;
17 * Scsi Error Handler Flags
19 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
21 #define SCSI_SENSE_VALID(scmd) \
22 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
25 extern int scsi_init_hosts(void);
26 extern void scsi_exit_hosts(void);
29 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
30 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
31 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
32 #ifdef CONFIG_SCSI_LOGGING
33 void scsi_log_send(struct scsi_cmnd *cmd);
34 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
36 static inline void scsi_log_send(struct scsi_cmnd *cmd)
38 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
44 /* list of keys for the lists */
46 SCSI_DEVINFO_GLOBAL = 0,
51 extern int scsi_get_device_flags(struct scsi_device *sdev,
52 const unsigned char *vendor,
53 const unsigned char *model);
54 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
55 const unsigned char *vendor,
56 const unsigned char *model, int key);
57 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
58 char *model, char *strflags,
60 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
61 extern int scsi_dev_info_add_list(int key, const char *name);
62 extern int scsi_dev_info_remove_list(int key);
64 extern int __init scsi_init_devinfo(void);
65 extern void scsi_exit_devinfo(void);
68 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
69 extern int scsi_error_handler(void *host);
70 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
71 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
72 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
73 void scsi_eh_ready_devs(struct Scsi_Host *shost,
74 struct list_head *work_q,
75 struct list_head *done_q);
76 int scsi_eh_get_sense(struct list_head *work_q,
77 struct list_head *done_q);
78 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
81 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
82 extern void scsi_device_unbusy(struct scsi_device *sdev);
83 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
84 extern void scsi_next_command(struct scsi_cmnd *cmd);
85 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
86 extern void scsi_run_host_queues(struct Scsi_Host *shost);
87 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
88 extern void scsi_free_queue(struct request_queue *q);
89 extern int scsi_init_queue(void);
90 extern void scsi_exit_queue(void);
93 extern struct kmem_cache *scsi_sdb_cache;
96 #ifdef CONFIG_SCSI_PROC_FS
97 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
98 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
99 extern void scsi_proc_host_add(struct Scsi_Host *);
100 extern void scsi_proc_host_rm(struct Scsi_Host *);
101 extern int scsi_init_procfs(void);
102 extern void scsi_exit_procfs(void);
104 # define scsi_proc_hostdir_add(sht) do { } while (0)
105 # define scsi_proc_hostdir_rm(sht) do { } while (0)
106 # define scsi_proc_host_add(shost) do { } while (0)
107 # define scsi_proc_host_rm(shost) do { } while (0)
108 # define scsi_init_procfs() (0)
109 # define scsi_exit_procfs() do { } while (0)
110 #endif /* CONFIG_PROC_FS */
113 extern int scsi_complete_async_scans(void);
114 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
115 unsigned int, unsigned int, int);
116 extern void scsi_forget_host(struct Scsi_Host *);
117 extern void scsi_rescan_device(struct device *);
121 extern int scsi_init_sysctl(void);
122 extern void scsi_exit_sysctl(void);
124 # define scsi_init_sysctl() (0)
125 # define scsi_exit_sysctl() do { } while (0)
126 #endif /* CONFIG_SYSCTL */
129 extern int scsi_sysfs_add_sdev(struct scsi_device *);
130 extern int scsi_sysfs_add_host(struct Scsi_Host *);
131 extern int scsi_sysfs_register(void);
132 extern void scsi_sysfs_unregister(void);
133 extern void scsi_sysfs_device_initialize(struct scsi_device *);
134 extern int scsi_sysfs_target_initialize(struct scsi_device *);
135 extern struct scsi_transport_template blank_transport_template;
136 extern void __scsi_remove_device(struct scsi_device *);
138 extern struct bus_type scsi_bus_type;
139 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
142 #ifdef CONFIG_SCSI_NETLINK
143 extern void scsi_netlink_init(void);
144 extern void scsi_netlink_exit(void);
145 extern struct sock *scsi_nl_sock;
147 static inline void scsi_netlink_init(void) {}
148 static inline void scsi_netlink_exit(void) {}
153 extern const struct dev_pm_ops scsi_bus_pm_ops;
155 #ifdef CONFIG_PM_RUNTIME
156 extern void scsi_autopm_get_target(struct scsi_target *);
157 extern void scsi_autopm_put_target(struct scsi_target *);
158 extern int scsi_autopm_get_host(struct Scsi_Host *);
159 extern void scsi_autopm_put_host(struct Scsi_Host *);
161 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
162 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
163 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
164 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
165 #endif /* CONFIG_PM_RUNTIME */
168 * internal scsi timeout functions: for use by mid-layer and transport
172 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
173 extern int scsi_internal_device_block(struct scsi_device *sdev);
174 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
176 #endif /* _SCSI_PRIV_H */