fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / drivers / scsi / scsi_priv.h
blobeff0059518954b26c62b116cd737f9e11e78da6a
1 #ifndef _SCSI_PRIV_H
2 #define _SCSI_PRIV_H
4 #include <linux/device.h>
6 struct request_queue;
7 struct scsi_cmnd;
8 struct scsi_device;
9 struct scsi_host_template;
10 struct Scsi_Host;
11 struct scsi_nl_hdr;
15 * Scsi Error Handler Flags
17 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
19 #define SCSI_SENSE_VALID(scmd) \
20 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
22 /* hosts.c */
23 extern int scsi_init_hosts(void);
24 extern void scsi_exit_hosts(void);
26 /* scsi.c */
27 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
28 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
29 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
30 extern void __scsi_done(struct scsi_cmnd *cmd);
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
41 /* scsi_scan.c */
42 int scsi_complete_async_scans(void);
44 /* scsi_devinfo.c */
45 extern int scsi_get_device_flags(struct scsi_device *sdev,
46 const unsigned char *vendor,
47 const unsigned char *model);
48 extern int __init scsi_init_devinfo(void);
49 extern void scsi_exit_devinfo(void);
51 /* scsi_error.c */
52 extern void scsi_add_timer(struct scsi_cmnd *, int,
53 void (*)(struct scsi_cmnd *));
54 extern int scsi_delete_timer(struct scsi_cmnd *);
55 extern void scsi_times_out(struct scsi_cmnd *cmd);
56 extern int scsi_error_handler(void *host);
57 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
58 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
59 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
60 void scsi_eh_ready_devs(struct Scsi_Host *shost,
61 struct list_head *work_q,
62 struct list_head *done_q);
63 int scsi_eh_get_sense(struct list_head *work_q,
64 struct list_head *done_q);
66 /* scsi_lib.c */
67 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
68 extern void scsi_device_unbusy(struct scsi_device *sdev);
69 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
70 extern void scsi_next_command(struct scsi_cmnd *cmd);
71 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
72 extern void scsi_run_host_queues(struct Scsi_Host *shost);
73 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
74 extern void scsi_free_queue(struct request_queue *q);
75 extern int scsi_init_queue(void);
76 extern void scsi_exit_queue(void);
78 /* scsi_proc.c */
79 #ifdef CONFIG_SCSI_PROC_FS
80 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
81 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
82 extern void scsi_proc_host_add(struct Scsi_Host *);
83 extern void scsi_proc_host_rm(struct Scsi_Host *);
84 extern int scsi_init_procfs(void);
85 extern void scsi_exit_procfs(void);
86 #else
87 # define scsi_proc_hostdir_add(sht) do { } while (0)
88 # define scsi_proc_hostdir_rm(sht) do { } while (0)
89 # define scsi_proc_host_add(shost) do { } while (0)
90 # define scsi_proc_host_rm(shost) do { } while (0)
91 # define scsi_init_procfs() (0)
92 # define scsi_exit_procfs() do { } while (0)
93 #endif /* CONFIG_PROC_FS */
95 /* scsi_scan.c */
96 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
97 unsigned int, unsigned int, int);
98 extern void scsi_forget_host(struct Scsi_Host *);
99 extern void scsi_rescan_device(struct device *);
101 /* scsi_sysctl.c */
102 #ifdef CONFIG_SYSCTL
103 extern int scsi_init_sysctl(void);
104 extern void scsi_exit_sysctl(void);
105 #else
106 # define scsi_init_sysctl() (0)
107 # define scsi_exit_sysctl() do { } while (0)
108 #endif /* CONFIG_SYSCTL */
110 /* scsi_sysfs.c */
111 extern int scsi_sysfs_add_sdev(struct scsi_device *);
112 extern int scsi_sysfs_add_host(struct Scsi_Host *);
113 extern int scsi_sysfs_register(void);
114 extern void scsi_sysfs_unregister(void);
115 extern void scsi_sysfs_device_initialize(struct scsi_device *);
116 extern int scsi_sysfs_target_initialize(struct scsi_device *);
117 extern struct scsi_transport_template blank_transport_template;
118 extern void __scsi_remove_device(struct scsi_device *);
120 extern struct bus_type scsi_bus_type;
122 /* scsi_netlink.c */
123 #ifdef CONFIG_SCSI_NETLINK
124 extern void scsi_netlink_init(void);
125 extern void scsi_netlink_exit(void);
126 extern struct sock *scsi_nl_sock;
127 #else
128 static inline void scsi_netlink_init(void) {}
129 static inline void scsi_netlink_exit(void) {}
130 #endif
133 * internal scsi timeout functions: for use by mid-layer and transport
134 * classes.
137 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
138 extern int scsi_internal_device_block(struct scsi_device *sdev);
139 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
141 #endif /* _SCSI_PRIV_H */