1
2#ifndef _SCSI_PRIV_H
3#define _SCSI_PRIV_H
4
5#include <linux/device.h>
6#include <linux/async.h>
7#include <scsi/scsi_device.h>
8
9struct request_queue;
10struct request;
11struct scsi_cmnd;
12struct scsi_device;
13struct scsi_target;
14struct scsi_host_template;
15struct Scsi_Host;
16struct scsi_nl_hdr;
17
18
19
20
21
22#define SCSI_EH_ABORT_SCHEDULED 0x0002
23
24#define SCSI_SENSE_VALID(scmd) \
25 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
26
27
28extern int scsi_init_hosts(void);
29extern void scsi_exit_hosts(void);
30
31
32extern bool scsi_use_blk_mq;
33int scsi_init_sense_cache(struct Scsi_Host *shost);
34void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
35#ifdef CONFIG_SCSI_LOGGING
36void scsi_log_send(struct scsi_cmnd *cmd);
37void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
38#else
39static inline void scsi_log_send(struct scsi_cmnd *cmd)
40 { };
41static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
42 { };
43#endif
44
45
46
47
48enum {
49 SCSI_DEVINFO_GLOBAL = 0,
50 SCSI_DEVINFO_SPI,
51};
52
53extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
54 const unsigned char *vendor,
55 const unsigned char *model);
56extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
57 const unsigned char *vendor,
58 const unsigned char *model,
59 int key);
60extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
61 char *model, char *strflags,
62 blist_flags_t flags, int key);
63extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
64extern int scsi_dev_info_add_list(int key, const char *name);
65extern int scsi_dev_info_remove_list(int key);
66
67extern int __init scsi_init_devinfo(void);
68extern void scsi_exit_devinfo(void);
69
70
71extern void scmd_eh_abort_handler(struct work_struct *work);
72extern enum blk_eh_timer_return scsi_times_out(struct request *req);
73extern int scsi_error_handler(void *host);
74extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
75extern void scsi_eh_wakeup(struct Scsi_Host *shost);
76extern void scsi_eh_scmd_add(struct scsi_cmnd *);
77void scsi_eh_ready_devs(struct Scsi_Host *shost,
78 struct list_head *work_q,
79 struct list_head *done_q);
80int scsi_eh_get_sense(struct list_head *work_q,
81 struct list_head *done_q);
82int scsi_noretry_cmd(struct scsi_cmnd *scmd);
83
84
85extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
86extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
87extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
88extern void scsi_device_unbusy(struct scsi_device *sdev);
89extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
90extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
91extern void scsi_run_host_queues(struct Scsi_Host *shost);
92extern void scsi_requeue_run_queue(struct work_struct *work);
93extern struct request_queue *scsi_old_alloc_queue(struct scsi_device *sdev);
94extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
95extern void scsi_start_queue(struct scsi_device *sdev);
96extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
97extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
98extern int scsi_init_queue(void);
99extern void scsi_exit_queue(void);
100extern void scsi_evt_thread(struct work_struct *work);
101struct request_queue;
102struct request;
103
104
105#ifdef CONFIG_SCSI_PROC_FS
106extern void scsi_proc_hostdir_add(struct scsi_host_template *);
107extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
108extern void scsi_proc_host_add(struct Scsi_Host *);
109extern void scsi_proc_host_rm(struct Scsi_Host *);
110extern int scsi_init_procfs(void);
111extern void scsi_exit_procfs(void);
112#else
113# define scsi_proc_hostdir_add(sht) do { } while (0)
114# define scsi_proc_hostdir_rm(sht) do { } while (0)
115# define scsi_proc_host_add(shost) do { } while (0)
116# define scsi_proc_host_rm(shost) do { } while (0)
117# define scsi_init_procfs() (0)
118# define scsi_exit_procfs() do { } while (0)
119#endif
120
121
122extern char scsi_scan_type[];
123extern int scsi_complete_async_scans(void);
124extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
125 unsigned int, u64, enum scsi_scan_mode);
126extern void scsi_forget_host(struct Scsi_Host *);
127extern void scsi_rescan_device(struct device *);
128
129
130#ifdef CONFIG_SYSCTL
131extern int scsi_init_sysctl(void);
132extern void scsi_exit_sysctl(void);
133#else
134# define scsi_init_sysctl() (0)
135# define scsi_exit_sysctl() do { } while (0)
136#endif
137
138
139extern int scsi_sysfs_add_sdev(struct scsi_device *);
140extern int scsi_sysfs_add_host(struct Scsi_Host *);
141extern int scsi_sysfs_register(void);
142extern void scsi_sysfs_unregister(void);
143extern void scsi_sysfs_device_initialize(struct scsi_device *);
144extern int scsi_sysfs_target_initialize(struct scsi_device *);
145extern struct scsi_transport_template blank_transport_template;
146extern void __scsi_remove_device(struct scsi_device *);
147
148extern struct bus_type scsi_bus_type;
149extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
150
151
152#ifdef CONFIG_SCSI_NETLINK
153extern void scsi_netlink_init(void);
154extern void scsi_netlink_exit(void);
155extern struct sock *scsi_nl_sock;
156#else
157static inline void scsi_netlink_init(void) {}
158static inline void scsi_netlink_exit(void) {}
159#endif
160
161
162#ifdef CONFIG_PM
163extern const struct dev_pm_ops scsi_bus_pm_ops;
164
165extern void scsi_autopm_get_target(struct scsi_target *);
166extern void scsi_autopm_put_target(struct scsi_target *);
167extern int scsi_autopm_get_host(struct Scsi_Host *);
168extern void scsi_autopm_put_host(struct Scsi_Host *);
169#else
170static inline void scsi_autopm_get_target(struct scsi_target *t) {}
171static inline void scsi_autopm_put_target(struct scsi_target *t) {}
172static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
173static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
174#endif
175
176extern struct async_domain scsi_sd_pm_domain;
177extern struct async_domain scsi_sd_probe_domain;
178
179
180#ifdef CONFIG_SCSI_DH
181void scsi_dh_add_device(struct scsi_device *sdev);
182void scsi_dh_release_device(struct scsi_device *sdev);
183#else
184static inline void scsi_dh_add_device(struct scsi_device *sdev) { }
185static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
186#endif
187static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
188
189
190
191
192
193
194#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600
195
196#endif
197