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_target;
11 struct scsi_host_template;
12 struct Scsi_Host;
13 struct scsi_nl_hdr;
14
15
16 /*
17 * Scsi Error Handler Flags
18 */
19 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
20
21 #define SCSI_SENSE_VALID(scmd) \
22 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
23
24 /* hosts.c */
25 extern int scsi_init_hosts(void);
26 extern void scsi_exit_hosts(void);
27
28 /* scsi.c */
29 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
30 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
31 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
32 #ifdef CONFIG_SCSI_LOGGING
33 void scsi_log_send(struct scsi_cmnd *cmd);
34 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
35 #else
scsi_log_send(struct scsi_cmnd * cmd)36 static inline void scsi_log_send(struct scsi_cmnd *cmd)
37 { };
scsi_log_completion(struct scsi_cmnd * cmd,int disposition)38 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
39 { };
40 #endif
41
42 /* scsi_devinfo.c */
43
44 /* list of keys for the lists */
45 enum {
46 SCSI_DEVINFO_GLOBAL = 0,
47 SCSI_DEVINFO_SPI,
48 SCSI_DEVINFO_DH,
49 };
50
51 extern int scsi_get_device_flags(struct scsi_device *sdev,
52 const unsigned char *vendor,
53 const unsigned char *model);
54 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
55 const unsigned char *vendor,
56 const unsigned char *model, int key);
57 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
58 char *model, char *strflags,
59 int flags, int key);
60 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
61 extern int scsi_dev_info_add_list(int key, const char *name);
62 extern int scsi_dev_info_remove_list(int key);
63
64 extern int __init scsi_init_devinfo(void);
65 extern void scsi_exit_devinfo(void);
66
67 /* scsi_error.c */
68 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
69 extern int scsi_error_handler(void *host);
70 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
71 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
72 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
73 void scsi_eh_ready_devs(struct Scsi_Host *shost,
74 struct list_head *work_q,
75 struct list_head *done_q);
76 int scsi_eh_get_sense(struct list_head *work_q,
77 struct list_head *done_q);
78 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
79
80 /* scsi_lib.c */
81 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
82 extern void scsi_device_unbusy(struct scsi_device *sdev);
83 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
84 extern void scsi_next_command(struct scsi_cmnd *cmd);
85 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
86 extern void scsi_run_host_queues(struct Scsi_Host *shost);
87 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
88 extern void scsi_free_queue(struct request_queue *q);
89 extern int scsi_init_queue(void);
90 extern void scsi_exit_queue(void);
91 struct request_queue;
92 struct request;
93 extern struct kmem_cache *scsi_sdb_cache;
94
95 /* scsi_proc.c */
96 #ifdef CONFIG_SCSI_PROC_FS
97 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
98 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
99 extern void scsi_proc_host_add(struct Scsi_Host *);
100 extern void scsi_proc_host_rm(struct Scsi_Host *);
101 extern int scsi_init_procfs(void);
102 extern void scsi_exit_procfs(void);
103 #else
104 # define scsi_proc_hostdir_add(sht) do { } while (0)
105 # define scsi_proc_hostdir_rm(sht) do { } while (0)
106 # define scsi_proc_host_add(shost) do { } while (0)
107 # define scsi_proc_host_rm(shost) do { } while (0)
108 # define scsi_init_procfs() (0)
109 # define scsi_exit_procfs() do { } while (0)
110 #endif /* CONFIG_PROC_FS */
111
112 /* scsi_scan.c */
113 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
114 unsigned int, unsigned int, int);
115 extern void scsi_forget_host(struct Scsi_Host *);
116 extern void scsi_rescan_device(struct device *);
117
118 /* scsi_sysctl.c */
119 #ifdef CONFIG_SYSCTL
120 extern int scsi_init_sysctl(void);
121 extern void scsi_exit_sysctl(void);
122 #else
123 # define scsi_init_sysctl() (0)
124 # define scsi_exit_sysctl() do { } while (0)
125 #endif /* CONFIG_SYSCTL */
126
127 /* scsi_sysfs.c */
128 extern int scsi_sysfs_add_sdev(struct scsi_device *);
129 extern int scsi_sysfs_add_host(struct Scsi_Host *);
130 extern int scsi_sysfs_register(void);
131 extern void scsi_sysfs_unregister(void);
132 extern void scsi_sysfs_device_initialize(struct scsi_device *);
133 extern int scsi_sysfs_target_initialize(struct scsi_device *);
134 extern struct scsi_transport_template blank_transport_template;
135 extern void __scsi_remove_device(struct scsi_device *);
136
137 extern struct bus_type scsi_bus_type;
138 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
139
140 /* scsi_netlink.c */
141 #ifdef CONFIG_SCSI_NETLINK
142 extern void scsi_netlink_init(void);
143 extern void scsi_netlink_exit(void);
144 extern struct sock *scsi_nl_sock;
145 #else
scsi_netlink_init(void)146 static inline void scsi_netlink_init(void) {}
scsi_netlink_exit(void)147 static inline void scsi_netlink_exit(void) {}
148 #endif
149
150 /* scsi_pm.c */
151 #ifdef CONFIG_PM
152 extern const struct dev_pm_ops scsi_bus_pm_ops;
153 #endif
154 #ifdef CONFIG_PM_RUNTIME
155 extern void scsi_autopm_get_target(struct scsi_target *);
156 extern void scsi_autopm_put_target(struct scsi_target *);
157 extern int scsi_autopm_get_host(struct Scsi_Host *);
158 extern void scsi_autopm_put_host(struct Scsi_Host *);
159 #else
scsi_autopm_get_target(struct scsi_target * t)160 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
scsi_autopm_put_target(struct scsi_target * t)161 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
scsi_autopm_get_host(struct Scsi_Host * h)162 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
scsi_autopm_put_host(struct Scsi_Host * h)163 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
164 #endif /* CONFIG_PM_RUNTIME */
165
166 /*
167 * internal scsi timeout functions: for use by mid-layer and transport
168 * classes.
169 */
170
171 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
172 extern int scsi_internal_device_block(struct scsi_device *sdev);
173 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
174
175 #endif /* _SCSI_PRIV_H */
176