tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 * Scsi Error Handler Flags
20 */
21#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
22#define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */
23
24#define SCSI_SENSE_VALID(scmd) \
25 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
26
27/* hosts.c */
28extern int scsi_init_hosts(void);
29extern void scsi_exit_hosts(void);
30
31/* scsi.c */
32extern bool scsi_use_blk_mq;
33extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
34extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
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/* scsi_devinfo.c */
46
47/* list of keys for the lists */
48enum {
49 SCSI_DEVINFO_GLOBAL = 0,
50 SCSI_DEVINFO_SPI,
51};
52
53extern int scsi_get_device_flags(struct scsi_device *sdev,
54 const unsigned char *vendor,
55 const unsigned char *model);
56extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
57 const unsigned char *vendor,
58 const unsigned char *model, int key);
59extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
60 char *model, char *strflags,
61 int flags, int key);
62extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
63extern int scsi_dev_info_add_list(int key, const char *name);
64extern int scsi_dev_info_remove_list(int key);
65
66extern int __init scsi_init_devinfo(void);
67extern void scsi_exit_devinfo(void);
68
69/* scsi_error.c */
70extern void scmd_eh_abort_handler(struct work_struct *work);
71extern enum blk_eh_timer_return scsi_times_out(struct request *req);
72extern int scsi_error_handler(void *host);
73extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
74extern void scsi_eh_wakeup(struct Scsi_Host *shost);
75extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
76void scsi_eh_ready_devs(struct Scsi_Host *shost,
77 struct list_head *work_q,
78 struct list_head *done_q);
79int scsi_eh_get_sense(struct list_head *work_q,
80 struct list_head *done_q);
81int scsi_noretry_cmd(struct scsi_cmnd *scmd);
82
83/* scsi_lib.c */
84extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
85extern void scsi_device_unbusy(struct scsi_device *sdev);
86extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
87extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
88extern void scsi_run_host_queues(struct Scsi_Host *shost);
89extern void scsi_requeue_run_queue(struct work_struct *work);
90extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
91extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
92extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
93extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
94extern int scsi_init_queue(void);
95extern void scsi_exit_queue(void);
96extern void scsi_evt_thread(struct work_struct *work);
97struct request_queue;
98struct request;
99extern struct kmem_cache *scsi_sdb_cache;
100
101/* scsi_proc.c */
102#ifdef CONFIG_SCSI_PROC_FS
103extern void scsi_proc_hostdir_add(struct scsi_host_template *);
104extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
105extern void scsi_proc_host_add(struct Scsi_Host *);
106extern void scsi_proc_host_rm(struct Scsi_Host *);
107extern int scsi_init_procfs(void);
108extern void scsi_exit_procfs(void);
109#else
110# define scsi_proc_hostdir_add(sht) do { } while (0)
111# define scsi_proc_hostdir_rm(sht) do { } while (0)
112# define scsi_proc_host_add(shost) do { } while (0)
113# define scsi_proc_host_rm(shost) do { } while (0)
114# define scsi_init_procfs() (0)
115# define scsi_exit_procfs() do { } while (0)
116#endif /* CONFIG_PROC_FS */
117
118/* scsi_scan.c */
119extern char scsi_scan_type[];
120extern int scsi_complete_async_scans(void);
121extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
122 unsigned int, u64, enum scsi_scan_mode);
123extern void scsi_forget_host(struct Scsi_Host *);
124extern void scsi_rescan_device(struct device *);
125
126/* scsi_sysctl.c */
127#ifdef CONFIG_SYSCTL
128extern int scsi_init_sysctl(void);
129extern void scsi_exit_sysctl(void);
130#else
131# define scsi_init_sysctl() (0)
132# define scsi_exit_sysctl() do { } while (0)
133#endif /* CONFIG_SYSCTL */
134
135/* scsi_sysfs.c */
136extern int scsi_sysfs_add_sdev(struct scsi_device *);
137extern int scsi_sysfs_add_host(struct Scsi_Host *);
138extern int scsi_sysfs_register(void);
139extern void scsi_sysfs_unregister(void);
140extern void scsi_sysfs_device_initialize(struct scsi_device *);
141extern int scsi_sysfs_target_initialize(struct scsi_device *);
142extern struct scsi_transport_template blank_transport_template;
143extern void __scsi_remove_device(struct scsi_device *);
144
145extern struct bus_type scsi_bus_type;
146extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
147
148/* scsi_netlink.c */
149#ifdef CONFIG_SCSI_NETLINK
150extern void scsi_netlink_init(void);
151extern void scsi_netlink_exit(void);
152extern struct sock *scsi_nl_sock;
153#else
154static inline void scsi_netlink_init(void) {}
155static inline void scsi_netlink_exit(void) {}
156#endif
157
158/* scsi_pm.c */
159#ifdef CONFIG_PM
160extern const struct dev_pm_ops scsi_bus_pm_ops;
161
162extern void scsi_autopm_get_target(struct scsi_target *);
163extern void scsi_autopm_put_target(struct scsi_target *);
164extern int scsi_autopm_get_host(struct Scsi_Host *);
165extern void scsi_autopm_put_host(struct Scsi_Host *);
166#else
167static inline void scsi_autopm_get_target(struct scsi_target *t) {}
168static inline void scsi_autopm_put_target(struct scsi_target *t) {}
169static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
170static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
171#endif /* CONFIG_PM */
172
173extern struct async_domain scsi_sd_pm_domain;
174extern struct async_domain scsi_sd_probe_domain;
175
176/* scsi_dh.c */
177#ifdef CONFIG_SCSI_DH
178int scsi_dh_add_device(struct scsi_device *sdev);
179void scsi_dh_release_device(struct scsi_device *sdev);
180#else
181static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
182static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
183#endif
184static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
185
186/*
187 * internal scsi timeout functions: for use by mid-layer and transport
188 * classes.
189 */
190
191#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
192extern int scsi_internal_device_block(struct scsi_device *sdev);
193extern int scsi_internal_device_unblock(struct scsi_device *sdev,
194 enum scsi_device_state new_state);
195
196#endif /* _SCSI_PRIV_H */