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scsi_priv.h
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1 #ifndef _SCSI_PRIV_H
2 #define _SCSI_PRIV_H
3 
4 #include <linux/device.h>
5 #include <linux/async.h>
6 #include <scsi/scsi_device.h>
7 
8 struct request_queue;
9 struct request;
10 struct scsi_cmnd;
11 struct scsi_device;
12 struct scsi_target;
13 struct scsi_host_template;
14 struct Scsi_Host;
15 struct scsi_nl_hdr;
16 
17 
18 /*
19  * Scsi Error Handler Flags
20  */
21 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
22 
23 #define SCSI_SENSE_VALID(scmd) \
24  (((scmd)->sense_buffer[0] & 0x70) == 0x70)
25 
26 /* hosts.c */
27 extern int scsi_init_hosts(void);
28 extern void scsi_exit_hosts(void);
29 
30 /* scsi.c */
31 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
32 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
33 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
34 #ifdef CONFIG_SCSI_LOGGING
35 void scsi_log_send(struct scsi_cmnd *cmd);
36 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
37 #else
38 static inline void scsi_log_send(struct scsi_cmnd *cmd)
39  { };
40 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
41  { };
42 #endif
43 
44 /* scsi_devinfo.c */
45 
46 /* list of keys for the lists */
47 enum {
48  SCSI_DEVINFO_GLOBAL = 0,
49  SCSI_DEVINFO_SPI,
50 };
51 
52 extern int scsi_get_device_flags(struct scsi_device *sdev,
53  const unsigned char *vendor,
54  const unsigned char *model);
55 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
56  const unsigned char *vendor,
57  const unsigned char *model, int key);
58 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
59  char *model, char *strflags,
60  int flags, int key);
61 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
62 extern int scsi_dev_info_add_list(int key, const char *name);
63 extern int scsi_dev_info_remove_list(int key);
64 
65 extern int __init scsi_init_devinfo(void);
66 extern void scsi_exit_devinfo(void);
67 
68 /* scsi_error.c */
69 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
70 extern int scsi_error_handler(void *host);
71 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
72 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
73 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
74 void scsi_eh_ready_devs(struct Scsi_Host *shost,
75  struct list_head *work_q,
76  struct list_head *done_q);
77 int scsi_eh_get_sense(struct list_head *work_q,
78  struct list_head *done_q);
79 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
80 
81 /* scsi_lib.c */
82 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
83 extern void scsi_device_unbusy(struct scsi_device *sdev);
84 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
85 extern void scsi_next_command(struct scsi_cmnd *cmd);
86 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
87 extern void scsi_run_host_queues(struct Scsi_Host *shost);
88 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
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_complete_async_scans(void);
114 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
115  unsigned int, unsigned int, int);
116 extern void scsi_forget_host(struct Scsi_Host *);
117 extern void scsi_rescan_device(struct device *);
118 
119 /* scsi_sysctl.c */
120 #ifdef CONFIG_SYSCTL
121 extern int scsi_init_sysctl(void);
122 extern void scsi_exit_sysctl(void);
123 #else
124 # define scsi_init_sysctl() (0)
125 # define scsi_exit_sysctl() do { } while (0)
126 #endif /* CONFIG_SYSCTL */
127 
128 /* scsi_sysfs.c */
129 extern int scsi_sysfs_add_sdev(struct scsi_device *);
130 extern int scsi_sysfs_add_host(struct Scsi_Host *);
131 extern int scsi_sysfs_register(void);
132 extern void scsi_sysfs_unregister(void);
133 extern void scsi_sysfs_device_initialize(struct scsi_device *);
134 extern int scsi_sysfs_target_initialize(struct scsi_device *);
135 extern struct scsi_transport_template blank_transport_template;
136 extern void __scsi_remove_device(struct scsi_device *);
137 
138 extern struct bus_type scsi_bus_type;
139 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
140 
141 /* scsi_netlink.c */
142 #ifdef CONFIG_SCSI_NETLINK
143 extern void scsi_netlink_init(void);
144 extern void scsi_netlink_exit(void);
145 extern struct sock *scsi_nl_sock;
146 #else
147 static inline void scsi_netlink_init(void) {}
148 static inline void scsi_netlink_exit(void) {}
149 #endif
150 
151 /* scsi_pm.c */
152 #ifdef CONFIG_PM
153 extern const struct dev_pm_ops scsi_bus_pm_ops;
154 #endif
155 #ifdef CONFIG_PM_RUNTIME
156 extern void scsi_autopm_get_target(struct scsi_target *);
157 extern void scsi_autopm_put_target(struct scsi_target *);
158 extern int scsi_autopm_get_host(struct Scsi_Host *);
159 extern void scsi_autopm_put_host(struct Scsi_Host *);
160 #else
161 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
162 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
163 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
164 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
165 #endif /* CONFIG_PM_RUNTIME */
166 
167 extern struct async_domain scsi_sd_probe_domain;
168 
169 /*
170  * internal scsi timeout functions: for use by mid-layer and transport
171  * classes.
172  */
173 
174 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
175 extern int scsi_internal_device_block(struct scsi_device *sdev);
176 extern int scsi_internal_device_unblock(struct scsi_device *sdev,
177  enum scsi_device_state new_state);
178 
179 #endif /* _SCSI_PRIV_H */
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