4 #include <linux/config.h>
5 #include <linux/device.h>
10 struct scsi_host_template
;
16 * Magic values for certain scsi structs. Shouldn't ever be used.
18 #define SCSI_CMND_MAGIC 0xE25C23A5
19 #define SCSI_REQ_MAGIC 0x75F6D354
22 * Scsi Error Handler Flags
24 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
26 #define SCSI_SENSE_VALID(scmd) \
27 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
30 * Special value for scanning to specify scanning or rescanning of all
31 * possible channels, (target) ids, or luns on a given shost.
33 #define SCAN_WILD_CARD ~0
36 extern int scsi_init_hosts(void);
37 extern void scsi_exit_hosts(void);
40 extern int scsi_dispatch_cmd(struct scsi_cmnd
*cmd
);
41 extern int scsi_setup_command_freelist(struct Scsi_Host
*shost
);
42 extern void scsi_destroy_command_freelist(struct Scsi_Host
*shost
);
43 extern void scsi_init_cmd_from_req(struct scsi_cmnd
*cmd
,
44 struct scsi_request
*sreq
);
45 extern void __scsi_release_request(struct scsi_request
*sreq
);
46 extern void __scsi_done(struct scsi_cmnd
*cmd
);
47 extern int scsi_retry_command(struct scsi_cmnd
*cmd
);
48 #ifdef CONFIG_SCSI_LOGGING
49 void scsi_log_send(struct scsi_cmnd
*cmd
);
50 void scsi_log_completion(struct scsi_cmnd
*cmd
, int disposition
);
52 static inline void scsi_log_send(struct scsi_cmnd
*cmd
)
54 static inline void scsi_log_completion(struct scsi_cmnd
*cmd
, int disposition
)
59 extern int scsi_get_device_flags(struct scsi_device
*sdev
,
60 const unsigned char *vendor
,
61 const unsigned char *model
);
62 extern int __init
scsi_init_devinfo(void);
63 extern void scsi_exit_devinfo(void);
66 extern void scsi_add_timer(struct scsi_cmnd
*, int,
67 void (*)(struct scsi_cmnd
*));
68 extern int scsi_delete_timer(struct scsi_cmnd
*);
69 extern void scsi_times_out(struct scsi_cmnd
*cmd
);
70 extern int scsi_error_handler(void *host
);
71 extern int scsi_decide_disposition(struct scsi_cmnd
*cmd
);
72 extern void scsi_eh_wakeup(struct Scsi_Host
*shost
);
73 extern int scsi_eh_scmd_add(struct scsi_cmnd
*, int);
76 extern int scsi_maybe_unblock_host(struct scsi_device
*sdev
);
77 extern void scsi_setup_cmd_retry(struct scsi_cmnd
*cmd
);
78 extern void scsi_device_unbusy(struct scsi_device
*sdev
);
79 extern int scsi_queue_insert(struct scsi_cmnd
*cmd
, int reason
);
80 extern void scsi_next_command(struct scsi_cmnd
*cmd
);
81 extern void scsi_run_host_queues(struct Scsi_Host
*shost
);
82 extern struct request_queue
*scsi_alloc_queue(struct scsi_device
*sdev
);
83 extern void scsi_free_queue(struct request_queue
*q
);
84 extern int scsi_init_queue(void);
85 extern void scsi_exit_queue(void);
88 #ifdef CONFIG_SCSI_PROC_FS
89 extern void scsi_proc_hostdir_add(struct scsi_host_template
*);
90 extern void scsi_proc_hostdir_rm(struct scsi_host_template
*);
91 extern void scsi_proc_host_add(struct Scsi_Host
*);
92 extern void scsi_proc_host_rm(struct Scsi_Host
*);
93 extern int scsi_init_procfs(void);
94 extern void scsi_exit_procfs(void);
96 # define scsi_proc_hostdir_add(sht) do { } while (0)
97 # define scsi_proc_hostdir_rm(sht) do { } while (0)
98 # define scsi_proc_host_add(shost) do { } while (0)
99 # define scsi_proc_host_rm(shost) do { } while (0)
100 # define scsi_init_procfs() (0)
101 # define scsi_exit_procfs() do { } while (0)
102 #endif /* CONFIG_PROC_FS */
105 extern int scsi_scan_host_selected(struct Scsi_Host
*, unsigned int,
106 unsigned int, unsigned int, int);
107 extern void scsi_forget_host(struct Scsi_Host
*);
108 extern void scsi_rescan_device(struct device
*);
112 extern int scsi_init_sysctl(void);
113 extern void scsi_exit_sysctl(void);
115 # define scsi_init_sysctl() (0)
116 # define scsi_exit_sysctl() do { } while (0)
117 #endif /* CONFIG_SYSCTL */
120 extern int scsi_sysfs_add_sdev(struct scsi_device
*);
121 extern int scsi_sysfs_add_host(struct Scsi_Host
*);
122 extern int scsi_sysfs_register(void);
123 extern void scsi_sysfs_unregister(void);
124 extern void scsi_sysfs_device_initialize(struct scsi_device
*);
125 extern int scsi_sysfs_target_initialize(struct scsi_device
*);
126 extern struct scsi_transport_template blank_transport_template
;
127 extern void __scsi_remove_device(struct scsi_device
*);
129 extern struct bus_type scsi_bus_type
;
132 * internal scsi timeout functions: for use by mid-layer and transport
136 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
137 extern int scsi_internal_device_block(struct scsi_device
*sdev
);
138 extern int scsi_internal_device_unblock(struct scsi_device
*sdev
);
140 #endif /* _SCSI_PRIV_H */