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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _SCSI_PRIV_H
2#define _SCSI_PRIV_H
3
4#include <linux/config.h>
5#include <linux/device.h>
6
7struct request_queue;
8struct scsi_cmnd;
9struct scsi_device;
10struct scsi_host_template;
11struct scsi_request;
12struct Scsi_Host;
13
14
15/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 * Magic values for certain scsi structs. Shouldn't ever be used.
17 */
18#define SCSI_CMND_MAGIC 0xE25C23A5
19#define SCSI_REQ_MAGIC 0x75F6D354
20
21/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 * Scsi Error Handler Flags
23 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#define SCSI_SENSE_VALID(scmd) \
27 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
28
Linus Torvalds1da177e2005-04-16 15:20:36 -070029/* hosts.c */
30extern int scsi_init_hosts(void);
31extern void scsi_exit_hosts(void);
32
33/* scsi.c */
34extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
35extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
36extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -070037extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
38 struct scsi_request *sreq);
39extern void __scsi_release_request(struct scsi_request *sreq);
40extern void __scsi_done(struct scsi_cmnd *cmd);
Jens Axboe1aea6432006-01-09 16:03:03 +010041extern int scsi_retry_command(struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#ifdef CONFIG_SCSI_LOGGING
43void scsi_log_send(struct scsi_cmnd *cmd);
44void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
45#else
46static inline void scsi_log_send(struct scsi_cmnd *cmd)
47 { };
48static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
49 { };
50#endif
51
52/* scsi_devinfo.c */
53extern int scsi_get_device_flags(struct scsi_device *sdev,
James Bottomley7f23e142005-12-01 12:50:13 -060054 const unsigned char *vendor,
55 const unsigned char *model);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056extern int __init scsi_init_devinfo(void);
57extern void scsi_exit_devinfo(void);
58
59/* scsi_error.c */
Christoph Hellwigfe1b2d52005-09-06 14:15:37 +020060extern void scsi_add_timer(struct scsi_cmnd *, int,
61 void (*)(struct scsi_cmnd *));
62extern int scsi_delete_timer(struct scsi_cmnd *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063extern void scsi_times_out(struct scsi_cmnd *cmd);
64extern int scsi_error_handler(void *host);
65extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
66extern void scsi_eh_wakeup(struct Scsi_Host *shost);
67extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
68
69/* scsi_lib.c */
70extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
71extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
72extern void scsi_device_unbusy(struct scsi_device *sdev);
73extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
74extern void scsi_next_command(struct scsi_cmnd *cmd);
75extern void scsi_run_host_queues(struct Scsi_Host *shost);
76extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
77extern void scsi_free_queue(struct request_queue *q);
78extern int scsi_init_queue(void);
79extern void scsi_exit_queue(void);
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114extern 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;
Alan Stern903f4fe2005-07-26 10:20:53 -0400121extern void __scsi_remove_device(struct scsi_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123extern struct bus_type scsi_bus_type;
124
125/*
126 * internal scsi timeout functions: for use by mid-layer and transport
127 * classes.
128 */
129
130#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
131extern int scsi_internal_device_block(struct scsi_device *sdev);
132extern int scsi_internal_device_unblock(struct scsi_device *sdev);
133
134#endif /* _SCSI_PRIV_H */