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 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 enum blk_eh_timer_return scsi_times_out(struct request *req);
53 extern int scsi_error_handler(void *host);
54 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
55 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
56 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
57 void scsi_eh_ready_devs(struct Scsi_Host *shost,
58 struct list_head *work_q,
59 struct list_head *done_q);
60 int scsi_eh_get_sense(struct list_head *work_q,
61 struct list_head *done_q);
62 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
65 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
66 extern void scsi_device_unbusy(struct scsi_device *sdev);
67 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
68 extern void scsi_next_command(struct scsi_cmnd *cmd);
69 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
70 extern void scsi_run_host_queues(struct Scsi_Host *shost);
71 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
72 extern void scsi_free_queue(struct request_queue *q);
73 extern int scsi_init_queue(void);
74 extern void scsi_exit_queue(void);
77 extern int scsi_prep_fn(struct request_queue *, struct request *);
78 extern struct kmem_cache *scsi_sdb_cache;
81 #ifdef CONFIG_SCSI_PROC_FS
82 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
83 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
84 extern void scsi_proc_host_add(struct Scsi_Host *);
85 extern void scsi_proc_host_rm(struct Scsi_Host *);
86 extern int scsi_init_procfs(void);
87 extern void scsi_exit_procfs(void);
89 # define scsi_proc_hostdir_add(sht) do { } while (0)
90 # define scsi_proc_hostdir_rm(sht) do { } while (0)
91 # define scsi_proc_host_add(shost) do { } while (0)
92 # define scsi_proc_host_rm(shost) do { } while (0)
93 # define scsi_init_procfs() (0)
94 # define scsi_exit_procfs() do { } while (0)
95 #endif /* CONFIG_PROC_FS */
98 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
99 unsigned int, unsigned int, int);
100 extern void scsi_forget_host(struct Scsi_Host *);
101 extern void scsi_rescan_device(struct device *);
105 extern int scsi_init_sysctl(void);
106 extern void scsi_exit_sysctl(void);
108 # define scsi_init_sysctl() (0)
109 # define scsi_exit_sysctl() do { } while (0)
110 #endif /* CONFIG_SYSCTL */
113 extern int scsi_sysfs_add_sdev(struct scsi_device *);
114 extern int scsi_sysfs_add_host(struct Scsi_Host *);
115 extern int scsi_sysfs_register(void);
116 extern void scsi_sysfs_unregister(void);
117 extern void scsi_sysfs_device_initialize(struct scsi_device *);
118 extern int scsi_sysfs_target_initialize(struct scsi_device *);
119 extern struct scsi_transport_template blank_transport_template;
120 extern void __scsi_remove_device(struct scsi_device *);
122 extern struct bus_type scsi_bus_type;
123 extern struct attribute_group *scsi_sysfs_shost_attr_groups[];
126 #ifdef CONFIG_SCSI_NETLINK
127 extern void scsi_netlink_init(void);
128 extern void scsi_netlink_exit(void);
129 extern struct sock *scsi_nl_sock;
131 static inline void scsi_netlink_init(void) {}
132 static inline void scsi_netlink_exit(void) {}
136 * internal scsi timeout functions: for use by mid-layer and transport
140 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
141 extern int scsi_internal_device_block(struct scsi_device *sdev);
142 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
144 #endif /* _SCSI_PRIV_H */