4 #include <linux/device.h>
10 struct scsi_host_template;
16 * Scsi Error Handler Flags
18 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
20 #define SCSI_SENSE_VALID(scmd) \
21 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
24 extern int scsi_init_hosts(void);
25 extern void scsi_exit_hosts(void);
28 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
29 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
30 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
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 extern int scsi_get_device_flags(struct scsi_device *sdev,
43 const unsigned char *vendor,
44 const unsigned char *model);
45 extern int __init scsi_init_devinfo(void);
46 extern void scsi_exit_devinfo(void);
49 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
50 extern int scsi_error_handler(void *host);
51 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
52 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
53 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
54 void scsi_eh_ready_devs(struct Scsi_Host *shost,
55 struct list_head *work_q,
56 struct list_head *done_q);
57 int scsi_eh_get_sense(struct list_head *work_q,
58 struct list_head *done_q);
59 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
62 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
63 extern void scsi_device_unbusy(struct scsi_device *sdev);
64 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
65 extern void scsi_next_command(struct scsi_cmnd *cmd);
66 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
67 extern void scsi_run_host_queues(struct Scsi_Host *shost);
68 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
69 extern void scsi_free_queue(struct request_queue *q);
70 extern int scsi_init_queue(void);
71 extern void scsi_exit_queue(void);
74 extern int scsi_prep_fn(struct request_queue *, struct request *);
75 extern struct kmem_cache *scsi_sdb_cache;
78 #ifdef CONFIG_SCSI_PROC_FS
79 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
80 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
81 extern void scsi_proc_host_add(struct Scsi_Host *);
82 extern void scsi_proc_host_rm(struct Scsi_Host *);
83 extern int scsi_init_procfs(void);
84 extern void scsi_exit_procfs(void);
86 # define scsi_proc_hostdir_add(sht) do { } while (0)
87 # define scsi_proc_hostdir_rm(sht) do { } while (0)
88 # define scsi_proc_host_add(shost) do { } while (0)
89 # define scsi_proc_host_rm(shost) do { } while (0)
90 # define scsi_init_procfs() (0)
91 # define scsi_exit_procfs() do { } while (0)
92 #endif /* CONFIG_PROC_FS */
95 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
96 unsigned int, unsigned int, int);
97 extern void scsi_forget_host(struct Scsi_Host *);
98 extern void scsi_rescan_device(struct device *);
102 extern int scsi_init_sysctl(void);
103 extern void scsi_exit_sysctl(void);
105 # define scsi_init_sysctl() (0)
106 # define scsi_exit_sysctl() do { } while (0)
107 #endif /* CONFIG_SYSCTL */
110 extern int scsi_sysfs_add_sdev(struct scsi_device *);
111 extern int scsi_sysfs_add_host(struct Scsi_Host *);
112 extern int scsi_sysfs_register(void);
113 extern void scsi_sysfs_unregister(void);
114 extern void scsi_sysfs_device_initialize(struct scsi_device *);
115 extern int scsi_sysfs_target_initialize(struct scsi_device *);
116 extern struct scsi_transport_template blank_transport_template;
117 extern void __scsi_remove_device(struct scsi_device *);
119 extern struct bus_type scsi_bus_type;
120 extern struct attribute_group *scsi_sysfs_shost_attr_groups[];
123 #ifdef CONFIG_SCSI_NETLINK
124 extern void scsi_netlink_init(void);
125 extern void scsi_netlink_exit(void);
126 extern struct sock *scsi_nl_sock;
128 static inline void scsi_netlink_init(void) {}
129 static inline void scsi_netlink_exit(void) {}
133 * internal scsi timeout functions: for use by mid-layer and transport
137 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
138 extern int scsi_internal_device_block(struct scsi_device *sdev);
139 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
141 #endif /* _SCSI_PRIV_H */