4 #include <linux/device.h>
9 struct scsi_host_template
;
15 * Scsi Error Handler Flags
17 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
19 #define SCSI_SENSE_VALID(scmd) \
20 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
23 extern int scsi_init_hosts(void);
24 extern void scsi_exit_hosts(void);
27 extern int scsi_dispatch_cmd(struct scsi_cmnd
*cmd
);
28 extern int scsi_setup_command_freelist(struct Scsi_Host
*shost
);
29 extern void scsi_destroy_command_freelist(struct Scsi_Host
*shost
);
30 extern void __scsi_done(struct scsi_cmnd
*cmd
);
31 #ifdef CONFIG_SCSI_LOGGING
32 void scsi_log_send(struct scsi_cmnd
*cmd
);
33 void scsi_log_completion(struct scsi_cmnd
*cmd
, int disposition
);
35 static inline void scsi_log_send(struct scsi_cmnd
*cmd
)
37 static inline void scsi_log_completion(struct scsi_cmnd
*cmd
, int disposition
)
42 int scsi_complete_async_scans(void);
45 extern int scsi_get_device_flags(struct scsi_device
*sdev
,
46 const unsigned char *vendor
,
47 const unsigned char *model
);
48 extern int __init
scsi_init_devinfo(void);
49 extern void scsi_exit_devinfo(void);
52 extern void scsi_add_timer(struct scsi_cmnd
*, int,
53 void (*)(struct scsi_cmnd
*));
54 extern int scsi_delete_timer(struct scsi_cmnd
*);
55 extern void scsi_times_out(struct scsi_cmnd
*cmd
);
56 extern int scsi_error_handler(void *host
);
57 extern int scsi_decide_disposition(struct scsi_cmnd
*cmd
);
58 extern void scsi_eh_wakeup(struct Scsi_Host
*shost
);
59 extern int scsi_eh_scmd_add(struct scsi_cmnd
*, int);
60 void scsi_eh_ready_devs(struct Scsi_Host
*shost
,
61 struct list_head
*work_q
,
62 struct list_head
*done_q
);
63 int scsi_eh_get_sense(struct list_head
*work_q
,
64 struct list_head
*done_q
);
67 extern int scsi_maybe_unblock_host(struct scsi_device
*sdev
);
68 extern void scsi_device_unbusy(struct scsi_device
*sdev
);
69 extern int scsi_queue_insert(struct scsi_cmnd
*cmd
, int reason
);
70 extern void scsi_next_command(struct scsi_cmnd
*cmd
);
71 extern void scsi_io_completion(struct scsi_cmnd
*, unsigned int);
72 extern void scsi_run_host_queues(struct Scsi_Host
*shost
);
73 extern struct request_queue
*scsi_alloc_queue(struct scsi_device
*sdev
);
74 extern void scsi_free_queue(struct request_queue
*q
);
75 extern int scsi_init_queue(void);
76 extern void scsi_exit_queue(void);
79 extern int scsi_prep_fn(struct request_queue
*, struct request
*);
80 extern struct kmem_cache
*scsi_sdb_cache
;
83 #ifdef CONFIG_SCSI_PROC_FS
84 extern void scsi_proc_hostdir_add(struct scsi_host_template
*);
85 extern void scsi_proc_hostdir_rm(struct scsi_host_template
*);
86 extern void scsi_proc_host_add(struct Scsi_Host
*);
87 extern void scsi_proc_host_rm(struct Scsi_Host
*);
88 extern int scsi_init_procfs(void);
89 extern void scsi_exit_procfs(void);
91 # define scsi_proc_hostdir_add(sht) do { } while (0)
92 # define scsi_proc_hostdir_rm(sht) do { } while (0)
93 # define scsi_proc_host_add(shost) do { } while (0)
94 # define scsi_proc_host_rm(shost) do { } while (0)
95 # define scsi_init_procfs() (0)
96 # define scsi_exit_procfs() do { } while (0)
97 #endif /* CONFIG_PROC_FS */
100 extern int scsi_scan_host_selected(struct Scsi_Host
*, unsigned int,
101 unsigned int, unsigned int, int);
102 extern void scsi_forget_host(struct Scsi_Host
*);
103 extern void scsi_rescan_device(struct device
*);
107 extern int scsi_init_sysctl(void);
108 extern void scsi_exit_sysctl(void);
110 # define scsi_init_sysctl() (0)
111 # define scsi_exit_sysctl() do { } while (0)
112 #endif /* CONFIG_SYSCTL */
115 extern int scsi_sysfs_add_sdev(struct scsi_device
*);
116 extern int scsi_sysfs_add_host(struct Scsi_Host
*);
117 extern int scsi_sysfs_register(void);
118 extern void scsi_sysfs_unregister(void);
119 extern void scsi_sysfs_device_initialize(struct scsi_device
*);
120 extern int scsi_sysfs_target_initialize(struct scsi_device
*);
121 extern struct scsi_transport_template blank_transport_template
;
122 extern void __scsi_remove_device(struct scsi_device
*);
124 extern struct bus_type scsi_bus_type
;
125 extern struct attribute_group
*scsi_sysfs_shost_attr_groups
[];
128 #ifdef CONFIG_SCSI_NETLINK
129 extern void scsi_netlink_init(void);
130 extern void scsi_netlink_exit(void);
131 extern struct sock
*scsi_nl_sock
;
133 static inline void scsi_netlink_init(void) {}
134 static inline void scsi_netlink_exit(void) {}
138 * internal scsi timeout functions: for use by mid-layer and transport
142 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
143 extern int scsi_internal_device_block(struct scsi_device
*sdev
);
144 extern int scsi_internal_device_unblock(struct scsi_device
*sdev
);
146 #endif /* _SCSI_PRIV_H */