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
8struct request_queue;
9struct request;
10struct scsi_cmnd;
11struct scsi_device;
12struct scsi_target;
13struct scsi_host_template;
14struct Scsi_Host;
15struct scsi_nl_hdr;
16
17
18
19
20
21#define SCSI_EH_CANCEL_CMD 0x0001
22
23#define SCSI_SENSE_VALID(scmd) \
24 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
25
26
27extern int scsi_init_hosts(void);
28extern void scsi_exit_hosts(void);
29
30
31extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
32extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
33extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
34#ifdef CONFIG_SCSI_LOGGING
35void scsi_log_send(struct scsi_cmnd *cmd);
36void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
37#else
38static inline void scsi_log_send(struct scsi_cmnd *cmd)
39 { };
40static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
41 { };
42#endif
43
44
45
46
47enum {
48 SCSI_DEVINFO_GLOBAL = 0,
49 SCSI_DEVINFO_SPI,
50};
51
52extern int scsi_get_device_flags(struct scsi_device *sdev,
53 const unsigned char *vendor,
54 const unsigned char *model);
55extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
56 const unsigned char *vendor,
57 const unsigned char *model, int key);
58extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
59 char *model, char *strflags,
60 int flags, int key);
61extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
62extern int scsi_dev_info_add_list(int key, const char *name);
63extern int scsi_dev_info_remove_list(int key);
64
65extern int __init scsi_init_devinfo(void);
66extern void scsi_exit_devinfo(void);
67
68
69extern enum blk_eh_timer_return scsi_times_out(struct request *req);
70extern int scsi_error_handler(void *host);
71extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
72extern void scsi_eh_wakeup(struct Scsi_Host *shost);
73extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
74void scsi_eh_ready_devs(struct Scsi_Host *shost,
75 struct list_head *work_q,
76 struct list_head *done_q);
77int scsi_eh_get_sense(struct list_head *work_q,
78 struct list_head *done_q);
79int scsi_noretry_cmd(struct scsi_cmnd *scmd);
80
81
82extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
83extern void scsi_device_unbusy(struct scsi_device *sdev);
84extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
85extern void scsi_next_command(struct scsi_cmnd *cmd);
86extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
87extern void scsi_run_host_queues(struct Scsi_Host *shost);
88extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
89extern int scsi_init_queue(void);
90extern void scsi_exit_queue(void);
91struct request_queue;
92struct request;
93extern struct kmem_cache *scsi_sdb_cache;
94
95
96#ifdef CONFIG_SCSI_PROC_FS
97extern void scsi_proc_hostdir_add(struct scsi_host_template *);
98extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
99extern void scsi_proc_host_add(struct Scsi_Host *);
100extern void scsi_proc_host_rm(struct Scsi_Host *);
101extern int scsi_init_procfs(void);
102extern 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
111
112
113extern int scsi_complete_async_scans(void);
114extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
115 unsigned int, unsigned int, int);
116extern void scsi_forget_host(struct Scsi_Host *);
117extern void scsi_rescan_device(struct device *);
118
119
120#ifdef CONFIG_SYSCTL
121extern int scsi_init_sysctl(void);
122extern void scsi_exit_sysctl(void);
123#else
124# define scsi_init_sysctl() (0)
125# define scsi_exit_sysctl() do { } while (0)
126#endif
127
128
129extern int scsi_sysfs_add_sdev(struct scsi_device *);
130extern int scsi_sysfs_add_host(struct Scsi_Host *);
131extern int scsi_sysfs_register(void);
132extern void scsi_sysfs_unregister(void);
133extern void scsi_sysfs_device_initialize(struct scsi_device *);
134extern int scsi_sysfs_target_initialize(struct scsi_device *);
135extern struct scsi_transport_template blank_transport_template;
136extern void __scsi_remove_device(struct scsi_device *);
137
138extern struct bus_type scsi_bus_type;
139extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
140
141
142#ifdef CONFIG_SCSI_NETLINK
143extern void scsi_netlink_init(void);
144extern void scsi_netlink_exit(void);
145extern struct sock *scsi_nl_sock;
146#else
147static inline void scsi_netlink_init(void) {}
148static inline void scsi_netlink_exit(void) {}
149#endif
150
151
152#ifdef CONFIG_PM
153extern const struct dev_pm_ops scsi_bus_pm_ops;
154#endif
155#ifdef CONFIG_PM_RUNTIME
156extern void scsi_autopm_get_target(struct scsi_target *);
157extern void scsi_autopm_put_target(struct scsi_target *);
158extern int scsi_autopm_get_host(struct Scsi_Host *);
159extern void scsi_autopm_put_host(struct Scsi_Host *);
160#else
161static inline void scsi_autopm_get_target(struct scsi_target *t) {}
162static inline void scsi_autopm_put_target(struct scsi_target *t) {}
163static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
164static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
165#endif
166
167extern struct async_domain scsi_sd_probe_domain;
168
169
170
171
172
173
174#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600
175extern int scsi_internal_device_block(struct scsi_device *sdev);
176extern int scsi_internal_device_unblock(struct scsi_device *sdev,
177 enum scsi_device_state new_state);
178
179#endif
180