1 #ifndef _SCSI_PRIV_H
2 #define _SCSI_PRIV_H
3
4 #include <linux/config.h>
5 #include <linux/device.h>
6
7 struct request_queue;
8 struct scsi_cmnd;
9 struct scsi_device;
10 struct scsi_host_template;
11 struct scsi_request;
12 struct Scsi_Host;
13
14
15 /*
16 * These are the values that the owner field can take.
17 * They are used as an indication of who the command belongs to.
18 */
19 #define SCSI_OWNER_HIGHLEVEL 0x100
20 #define SCSI_OWNER_MIDLEVEL 0x101
21 #define SCSI_OWNER_LOWLEVEL 0x102
22 #define SCSI_OWNER_ERROR_HANDLER 0x103
23 #define SCSI_OWNER_BH_HANDLER 0x104
24 #define SCSI_OWNER_NOBODY 0x105
25
26 /*
27 * Magic values for certain scsi structs. Shouldn't ever be used.
28 */
29 #define SCSI_CMND_MAGIC 0xE25C23A5
30 #define SCSI_REQ_MAGIC 0x75F6D354
31
32 /*
33 * Flag bit for the internal_timeout array
34 */
35 #define NORMAL_TIMEOUT 0
36
37 /*
38 * Scsi Error Handler Flags
39 */
40 #define scsi_eh_eflags_chk(scp, flags) \
41 ((scp)->eh_eflags & (flags))
42 #define scsi_eh_eflags_set(scp, flags) \
43 do { (scp)->eh_eflags |= (flags); } while(0)
44 #define scsi_eh_eflags_clr(scp, flags) \
45 do { (scp)->eh_eflags &= ~(flags); } while(0)
46 #define scsi_eh_eflags_clr_all(scp) \
47 (scp->eh_eflags = 0)
48
49 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
50 #define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */
51
52 #define SCSI_SENSE_VALID(scmd) \
53 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
54
55 /*
56 * Special value for scanning to specify scanning or rescanning of all
57 * possible channels, (target) ids, or luns on a given shost.
58 */
59 #define SCAN_WILD_CARD ~0
60
61 /* hosts.c */
62 extern int scsi_init_hosts(void);
63 extern void scsi_exit_hosts(void);
64
65 /* scsi.c */
66 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
67 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
68 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
69 extern void scsi_done(struct scsi_cmnd *cmd);
70 extern int scsi_retry_command(struct scsi_cmnd *cmd);
71 extern int scsi_insert_special_req(struct scsi_request *sreq, int);
72 extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
73 struct scsi_request *sreq);
74 extern void __scsi_release_request(struct scsi_request *sreq);
75 extern void __scsi_done(struct scsi_cmnd *cmd);
76 #ifdef CONFIG_SCSI_LOGGING
77 void scsi_log_send(struct scsi_cmnd *cmd);
78 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
79 #else
80 static inline void scsi_log_send(struct scsi_cmnd *cmd)
81 { };
82 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
83 { };
84 #endif
85
86 /* scsi_devinfo.c */
87 extern int scsi_get_device_flags(struct scsi_device *sdev,
88 unsigned char *vendor, unsigned char *model);
89 extern int __init scsi_init_devinfo(void);
90 extern void scsi_exit_devinfo(void);
91
92 /* scsi_error.c */
93 extern void scsi_times_out(struct scsi_cmnd *cmd);
94 extern int scsi_error_handler(void *host);
95 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
96 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
97 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
98
99 /* scsi_lib.c */
100 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
101 extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
102 extern void scsi_device_unbusy(struct scsi_device *sdev);
103 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
104 extern void scsi_next_command(struct scsi_cmnd *cmd);
105 extern void scsi_run_host_queues(struct Scsi_Host *shost);
106 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
107 extern void scsi_free_queue(struct request_queue *q);
108 extern int scsi_init_queue(void);
109 extern void scsi_exit_queue(void);
110
111 /* scsi_proc.c */
112 #ifdef CONFIG_SCSI_PROC_FS
113 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
114 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
115 extern void scsi_proc_host_add(struct Scsi_Host *);
116 extern void scsi_proc_host_rm(struct Scsi_Host *);
117 extern int scsi_init_procfs(void);
118 extern void scsi_exit_procfs(void);
119 #else
120 # define scsi_proc_hostdir_add(sht) do { } while (0)
121 # define scsi_proc_hostdir_rm(sht) do { } while (0)
122 # define scsi_proc_host_add(shost) do { } while (0)
123 # define scsi_proc_host_rm(shost) do { } while (0)
124 # define scsi_init_procfs() (0)
125 # define scsi_exit_procfs() do { } while (0)
126 #endif /* CONFIG_PROC_FS */
127
128 /* scsi_scan.c */
129 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
130 unsigned int, unsigned int, int);
131 extern void scsi_forget_host(struct Scsi_Host *);
132 extern void scsi_rescan_device(struct device *);
133
134 /* scsi_sysctl.c */
135 #ifdef CONFIG_SYSCTL
136 extern int scsi_init_sysctl(void);
137 extern void scsi_exit_sysctl(void);
138 #else
139 # define scsi_init_sysctl() (0)
140 # define scsi_exit_sysctl() do { } while (0)
141 #endif /* CONFIG_SYSCTL */
142
143 /* scsi_sysfs.c */
144 extern void scsi_device_dev_release(struct device *);
145 extern int scsi_sysfs_add_sdev(struct scsi_device *);
146 extern int scsi_sysfs_add_host(struct Scsi_Host *);
147 extern int scsi_sysfs_register(void);
148 extern void scsi_sysfs_unregister(void);
149 extern void scsi_sysfs_device_initialize(struct scsi_device *);
150 extern int scsi_sysfs_target_initialize(struct scsi_device *);
151 extern struct scsi_transport_template blank_transport_template;
152
153 extern struct class sdev_class;
154 extern struct bus_type scsi_bus_type;
155
156 /*
157 * internal scsi timeout functions: for use by mid-layer and transport
158 * classes.
159 */
160
161 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
162 extern int scsi_internal_device_block(struct scsi_device *sdev);
163 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
164
165 #endif /* _SCSI_PRIV_H */
166
|
This page was automatically generated by the
LXR engine.
|