1 #ifndef _SCSI_PRIV_H
2 #define _SCSI_PRIV_H
3
4 #include <linux/device.h>
5
6 struct request_queue;
7 struct request;
8 struct scsi_cmnd;
9 struct scsi_device;
10 struct scsi_host_template;
11 struct Scsi_Host;
12 struct scsi_nl_hdr;
13
14
15 /*
16 * Scsi Error Handler Flags
17 */
18 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
19
20 #define SCSI_SENSE_VALID(scmd) \
21 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
22
23 /* hosts.c */
24 extern int scsi_init_hosts(void);
25 extern void scsi_exit_hosts(void);
26
27 /* scsi.c */
28 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
29 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
30 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
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_devinfo.c */
42
43 /* list of keys for the lists */
44 enum {
45 SCSI_DEVINFO_GLOBAL = 0,
46 SCSI_DEVINFO_SPI,
47 };
48
49 extern int scsi_get_device_flags(struct scsi_device *sdev,
50 const unsigned char *vendor,
51 const unsigned char *model);
52 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
53 const unsigned char *vendor,
54 const unsigned char *model, int key);
55 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
56 char *model, char *strflags,
57 int flags, int key);
58 extern int scsi_dev_info_add_list(int key, const char *name);
59 extern int scsi_dev_info_remove_list(int key);
60
61 extern int __init scsi_init_devinfo(void);
62 extern void scsi_exit_devinfo(void);
63
64 /* scsi_error.c */
65 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
66 extern int scsi_error_handler(void *host);
67 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
68 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
69 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
70 void scsi_eh_ready_devs(struct Scsi_Host *shost,
71 struct list_head *work_q,
72 struct list_head *done_q);
73 int scsi_eh_get_sense(struct list_head *work_q,
74 struct list_head *done_q);
75 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
76
77 /* scsi_lib.c */
78 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
79 extern void scsi_device_unbusy(struct scsi_device *sdev);
80 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
81 extern void scsi_next_command(struct scsi_cmnd *cmd);
82 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
83 extern void scsi_run_host_queues(struct Scsi_Host *shost);
84 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
85 extern void scsi_free_queue(struct request_queue *q);
86 extern int scsi_init_queue(void);
87 extern void scsi_exit_queue(void);
88 struct request_queue;
89 struct request;
90 extern struct kmem_cache *scsi_sdb_cache;
91
92 /* scsi_proc.c */
93 #ifdef CONFIG_SCSI_PROC_FS
94 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
95 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
96 extern void scsi_proc_host_add(struct Scsi_Host *);
97 extern void scsi_proc_host_rm(struct Scsi_Host *);
98 extern int scsi_init_procfs(void);
99 extern void scsi_exit_procfs(void);
100 #else
101 # define scsi_proc_hostdir_add(sht) do { } while (0)
102 # define scsi_proc_hostdir_rm(sht) do { } while (0)
103 # define scsi_proc_host_add(shost) do { } while (0)
104 # define scsi_proc_host_rm(shost) do { } while (0)
105 # define scsi_init_procfs() (0)
106 # define scsi_exit_procfs() do { } while (0)
107 #endif /* CONFIG_PROC_FS */
108
109 /* scsi_scan.c */
110 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
111 unsigned int, unsigned int, int);
112 extern void scsi_forget_host(struct Scsi_Host *);
113 extern void scsi_rescan_device(struct device *);
114
115 /* scsi_sysctl.c */
116 #ifdef CONFIG_SYSCTL
117 extern int scsi_init_sysctl(void);
118 extern void scsi_exit_sysctl(void);
119 #else
120 # define scsi_init_sysctl() (0)
121 # define scsi_exit_sysctl() do { } while (0)
122 #endif /* CONFIG_SYSCTL */
123
124 /* scsi_sysfs.c */
125 extern int scsi_sysfs_add_sdev(struct scsi_device *);
126 extern int scsi_sysfs_add_host(struct Scsi_Host *);
127 extern int scsi_sysfs_register(void);
128 extern void scsi_sysfs_unregister(void);
129 extern void scsi_sysfs_device_initialize(struct scsi_device *);
130 extern int scsi_sysfs_target_initialize(struct scsi_device *);
131 extern struct scsi_transport_template blank_transport_template;
132 extern void __scsi_remove_device(struct scsi_device *);
133
134 extern struct bus_type scsi_bus_type;
135 extern struct attribute_group *scsi_sysfs_shost_attr_groups[];
136
137 /* scsi_netlink.c */
138 #ifdef CONFIG_SCSI_NETLINK
139 extern void scsi_netlink_init(void);
140 extern void scsi_netlink_exit(void);
141 extern struct sock *scsi_nl_sock;
142 #else
143 static inline void scsi_netlink_init(void) {}
144 static inline void scsi_netlink_exit(void) {}
145 #endif
146
147 /*
148 * internal scsi timeout functions: for use by mid-layer and transport
149 * classes.
150 */
151
152 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
153 extern int scsi_internal_device_block(struct scsi_device *sdev);
154 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
155
156 #endif /* _SCSI_PRIV_H */
157
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