1 #ifndef _SCSI_PRIV_H
2 #define _SCSI_PRIV_H
3
4 #include <linux/device.h>
5
6 struct request_queue;
7 struct scsi_cmnd;
8 struct scsi_device;
9 struct scsi_host_template;
10 struct Scsi_Host;
11 struct scsi_nl_hdr;
12
13
14 /*
15 * Scsi Error Handler Flags
16 */
17 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
18
19 #define SCSI_SENSE_VALID(scmd) \
20 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
21
22 /* hosts.c */
23 extern int scsi_init_hosts(void);
24 extern void scsi_exit_hosts(void);
25
26 /* scsi.c */
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);
34 #else
35 static inline void scsi_log_send(struct scsi_cmnd *cmd)
36 { };
37 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
38 { };
39 #endif
40
41 /* scsi_scan.c */
42 int scsi_complete_async_scans(void);
43
44 /* scsi_devinfo.c */
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);
50
51 /* scsi_error.c */
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);
65
66 /* scsi_lib.c */
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);
77 struct request_queue;
78 struct request;
79 extern int scsi_prep_fn(struct request_queue *, struct request *);
80
81 /* scsi_proc.c */
82 #ifdef CONFIG_SCSI_PROC_FS
83 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
84 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
85 extern void scsi_proc_host_add(struct Scsi_Host *);
86 extern void scsi_proc_host_rm(struct Scsi_Host *);
87 extern int scsi_init_procfs(void);
88 extern void scsi_exit_procfs(void);
89 #else
90 # define scsi_proc_hostdir_add(sht) do { } while (0)
91 # define scsi_proc_hostdir_rm(sht) do { } while (0)
92 # define scsi_proc_host_add(shost) do { } while (0)
93 # define scsi_proc_host_rm(shost) do { } while (0)
94 # define scsi_init_procfs() (0)
95 # define scsi_exit_procfs() do { } while (0)
96 #endif /* CONFIG_PROC_FS */
97
98 /* scsi_scan.c */
99 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
100 unsigned int, unsigned int, int);
101 extern void scsi_forget_host(struct Scsi_Host *);
102 extern void scsi_rescan_device(struct device *);
103
104 /* scsi_sysctl.c */
105 #ifdef CONFIG_SYSCTL
106 extern int scsi_init_sysctl(void);
107 extern void scsi_exit_sysctl(void);
108 #else
109 # define scsi_init_sysctl() (0)
110 # define scsi_exit_sysctl() do { } while (0)
111 #endif /* CONFIG_SYSCTL */
112
113 /* scsi_sysfs.c */
114 extern int scsi_sysfs_add_sdev(struct scsi_device *);
115 extern int scsi_sysfs_add_host(struct Scsi_Host *);
116 extern int scsi_sysfs_register(void);
117 extern void scsi_sysfs_unregister(void);
118 extern void scsi_sysfs_device_initialize(struct scsi_device *);
119 extern int scsi_sysfs_target_initialize(struct scsi_device *);
120 extern struct scsi_transport_template blank_transport_template;
121 extern void __scsi_remove_device(struct scsi_device *);
122
123 extern struct bus_type scsi_bus_type;
124
125 /* scsi_netlink.c */
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;
130 #else
131 static inline void scsi_netlink_init(void) {}
132 static inline void scsi_netlink_exit(void) {}
133 #endif
134
135 /*
136 * internal scsi timeout functions: for use by mid-layer and transport
137 * classes.
138 */
139
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);
143
144 #endif /* _SCSI_PRIV_H */
145
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