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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 */
25#define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */
26
27#define SCSI_SENSE_VALID(scmd) \
28 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
29
30/*
31 * Special value for scanning to specify scanning or rescanning of all
32 * possible channels, (target) ids, or luns on a given shost.
33 */
34#define SCAN_WILD_CARD ~0
35
36/* hosts.c */
37extern int scsi_init_hosts(void);
38extern void scsi_exit_hosts(void);
39
40/* scsi.c */
41extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
42extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
43extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -070044extern int scsi_insert_special_req(struct scsi_request *sreq, int);
45extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
46 struct scsi_request *sreq);
47extern void __scsi_release_request(struct scsi_request *sreq);
48extern void __scsi_done(struct scsi_cmnd *cmd);
49#ifdef CONFIG_SCSI_LOGGING
50void scsi_log_send(struct scsi_cmnd *cmd);
51void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
52#else
53static inline void scsi_log_send(struct scsi_cmnd *cmd)
54 { };
55static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
56 { };
57#endif
58
59/* scsi_devinfo.c */
60extern int scsi_get_device_flags(struct scsi_device *sdev,
61 unsigned char *vendor, unsigned char *model);
62extern int __init scsi_init_devinfo(void);
63extern void scsi_exit_devinfo(void);
64
65/* scsi_error.c */
Christoph Hellwigfe1b2d52005-09-06 14:15:37 +020066extern void scsi_add_timer(struct scsi_cmnd *, int,
67 void (*)(struct scsi_cmnd *));
68extern int scsi_delete_timer(struct scsi_cmnd *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069extern void scsi_times_out(struct scsi_cmnd *cmd);
70extern int scsi_error_handler(void *host);
71extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
72extern void scsi_eh_wakeup(struct Scsi_Host *shost);
73extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
74
75/* scsi_lib.c */
76extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
77extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
78extern void scsi_device_unbusy(struct scsi_device *sdev);
79extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
80extern void scsi_next_command(struct scsi_cmnd *cmd);
81extern void scsi_run_host_queues(struct Scsi_Host *shost);
82extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
83extern void scsi_free_queue(struct request_queue *q);
84extern int scsi_init_queue(void);
85extern void scsi_exit_queue(void);
86
87/* scsi_proc.c */
88#ifdef CONFIG_SCSI_PROC_FS
89extern void scsi_proc_hostdir_add(struct scsi_host_template *);
90extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
91extern void scsi_proc_host_add(struct Scsi_Host *);
92extern void scsi_proc_host_rm(struct Scsi_Host *);
93extern int scsi_init_procfs(void);
94extern void scsi_exit_procfs(void);
95#else
96# define scsi_proc_hostdir_add(sht) do { } while (0)
97# define scsi_proc_hostdir_rm(sht) do { } while (0)
98# define scsi_proc_host_add(shost) do { } while (0)
99# define scsi_proc_host_rm(shost) do { } while (0)
100# define scsi_init_procfs() (0)
101# define scsi_exit_procfs() do { } while (0)
102#endif /* CONFIG_PROC_FS */
103
104/* scsi_scan.c */
105extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
106 unsigned int, unsigned int, int);
107extern void scsi_forget_host(struct Scsi_Host *);
108extern void scsi_rescan_device(struct device *);
109
110/* scsi_sysctl.c */
111#ifdef CONFIG_SYSCTL
112extern int scsi_init_sysctl(void);
113extern void scsi_exit_sysctl(void);
114#else
115# define scsi_init_sysctl() (0)
116# define scsi_exit_sysctl() do { } while (0)
117#endif /* CONFIG_SYSCTL */
118
119/* scsi_sysfs.c */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120extern int scsi_sysfs_add_sdev(struct scsi_device *);
121extern int scsi_sysfs_add_host(struct Scsi_Host *);
122extern int scsi_sysfs_register(void);
123extern void scsi_sysfs_unregister(void);
124extern void scsi_sysfs_device_initialize(struct scsi_device *);
125extern int scsi_sysfs_target_initialize(struct scsi_device *);
126extern struct scsi_transport_template blank_transport_template;
Alan Stern903f4fe2005-07-26 10:20:53 -0400127extern void __scsi_remove_device(struct scsi_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129extern struct bus_type scsi_bus_type;
130
131/*
132 * internal scsi timeout functions: for use by mid-layer and transport
133 * classes.
134 */
135
136#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
137extern int scsi_internal_device_block(struct scsi_device *sdev);
138extern int scsi_internal_device_unblock(struct scsi_device *sdev);
139
140#endif /* _SCSI_PRIV_H */