scsi_priv.h revision 5b7f16804ad90e7f7a10c05b6a2e782598d9745a 
1#ifndef _SCSI_PRIV_H
2#define _SCSI_PRIV_H
3
4#include <linux/device.h>
5
6struct request_queue;
7struct scsi_cmnd;
8struct scsi_device;
9struct scsi_host_template;
10struct Scsi_Host;
11struct 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 */
23extern int scsi_init_hosts(void);
24extern void scsi_exit_hosts(void);
25
26/* scsi.c */
27extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
28extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
29extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
30extern void __scsi_done(struct scsi_cmnd *cmd);
31#ifdef CONFIG_SCSI_LOGGING
32void scsi_log_send(struct scsi_cmnd *cmd);
33void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
34#else
35static inline void scsi_log_send(struct scsi_cmnd *cmd)
36	{ };
37static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
38	{ };
39#endif
40
41/* scsi_scan.c */
42int scsi_complete_async_scans(void);
43
44/* scsi_devinfo.c */
45extern int scsi_get_device_flags(struct scsi_device *sdev,
46				 const unsigned char *vendor,
47				 const unsigned char *model);
48extern int __init scsi_init_devinfo(void);
49extern void scsi_exit_devinfo(void);
50
51/* scsi_error.c */
52extern void scsi_add_timer(struct scsi_cmnd *, int,
53		void (*)(struct scsi_cmnd *));
54extern int scsi_delete_timer(struct scsi_cmnd *);
55extern void scsi_times_out(struct scsi_cmnd *cmd);
56extern int scsi_error_handler(void *host);
57extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
58extern void scsi_eh_wakeup(struct Scsi_Host *shost);
59extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
60void scsi_eh_ready_devs(struct Scsi_Host *shost,
61			struct list_head *work_q,
62			struct list_head *done_q);
63int scsi_eh_get_sense(struct list_head *work_q,
64		      struct list_head *done_q);
65
66/* scsi_lib.c */
67extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
68extern void scsi_device_unbusy(struct scsi_device *sdev);
69extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
70extern void scsi_next_command(struct scsi_cmnd *cmd);
71extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
72extern void scsi_run_host_queues(struct Scsi_Host *shost);
73extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
74extern void scsi_free_queue(struct request_queue *q);
75extern int scsi_init_queue(void);
76extern void scsi_exit_queue(void);
77struct request_queue;
78struct request;
79extern int scsi_prep_fn(struct request_queue *, struct request *);
80
81/* scsi_proc.c */
82#ifdef CONFIG_SCSI_PROC_FS
83extern void scsi_proc_hostdir_add(struct scsi_host_template *);
84extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
85extern void scsi_proc_host_add(struct Scsi_Host *);
86extern void scsi_proc_host_rm(struct Scsi_Host *);
87extern int scsi_init_procfs(void);
88extern 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 */
99extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
100				   unsigned int, unsigned int, int);
101extern void scsi_forget_host(struct Scsi_Host *);
102extern void scsi_rescan_device(struct device *);
103
104/* scsi_sysctl.c */
105#ifdef CONFIG_SYSCTL
106extern int scsi_init_sysctl(void);
107extern 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 */
114extern int scsi_sysfs_add_sdev(struct scsi_device *);
115extern int scsi_sysfs_add_host(struct Scsi_Host *);
116extern int scsi_sysfs_register(void);
117extern void scsi_sysfs_unregister(void);
118extern void scsi_sysfs_device_initialize(struct scsi_device *);
119extern int scsi_sysfs_target_initialize(struct scsi_device *);
120extern struct scsi_transport_template blank_transport_template;
121extern void __scsi_remove_device(struct scsi_device *);
122
123extern struct bus_type scsi_bus_type;
124
125/* scsi_netlink.c */
126#ifdef CONFIG_SCSI_NETLINK
127extern void scsi_netlink_init(void);
128extern void scsi_netlink_exit(void);
129extern struct sock *scsi_nl_sock;
130#else
131static inline void scsi_netlink_init(void) {}
132static 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 */
141extern int scsi_internal_device_block(struct scsi_device *sdev);
142extern int scsi_internal_device_unblock(struct scsi_device *sdev);
143
144#endif /* _SCSI_PRIV_H */
145