1 /* SPDX-License-Identifier: GPL-2.0 */
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
9 struct request_queue;
10 struct request;
11 struct scsi_cmnd;
12 struct scsi_device;
13 struct scsi_target;
14 struct scsi_host_template;
15 struct Scsi_Host;
16 struct scsi_nl_hdr;
17
18
19 /*
20 * Scsi Error Handler Flags
21 */
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 */
28 extern int scsi_init_hosts(void);
29 extern void scsi_exit_hosts(void);
30
31 /* scsi.c */
32 extern bool scsi_use_blk_mq;
33 int scsi_init_sense_cache(struct Scsi_Host *shost);
34 void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
35 #ifdef CONFIG_SCSI_LOGGING
36 void scsi_log_send(struct scsi_cmnd *cmd);
37 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
38 #else
scsi_log_send(struct scsi_cmnd * cmd)39 static inline void scsi_log_send(struct scsi_cmnd *cmd)
40 { };
scsi_log_completion(struct scsi_cmnd * cmd,int disposition)41 static 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 */
48 enum scsi_devinfo_key {
49 SCSI_DEVINFO_GLOBAL = 0,
50 SCSI_DEVINFO_SPI,
51 };
52
53 extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
54 const unsigned char *vendor,
55 const unsigned char *model);
56 extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
57 const unsigned char *vendor,
58 const unsigned char *model,
59 enum scsi_devinfo_key key);
60 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
61 char *model, char *strflags,
62 blist_flags_t flags,
63 enum scsi_devinfo_key key);
64 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model,
65 enum scsi_devinfo_key key);
66 extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name);
67 extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key);
68
69 extern int __init scsi_init_devinfo(void);
70 extern void scsi_exit_devinfo(void);
71
72 /* scsi_error.c */
73 extern void scmd_eh_abort_handler(struct work_struct *work);
74 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
75 extern int scsi_error_handler(void *host);
76 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
77 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
78 extern void scsi_eh_scmd_add(struct scsi_cmnd *);
79 void scsi_eh_ready_devs(struct Scsi_Host *shost,
80 struct list_head *work_q,
81 struct list_head *done_q);
82 int scsi_eh_get_sense(struct list_head *work_q,
83 struct list_head *done_q);
84 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
85
86 /* scsi_lib.c */
87 extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
88 extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
89 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
90 extern void scsi_device_unbusy(struct scsi_device *sdev);
91 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
92 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
93 extern void scsi_run_host_queues(struct Scsi_Host *shost);
94 extern void scsi_requeue_run_queue(struct work_struct *work);
95 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
96 extern void scsi_start_queue(struct scsi_device *sdev);
97 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
98 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
99 extern int scsi_init_queue(void);
100 extern void scsi_exit_queue(void);
101 extern void scsi_evt_thread(struct work_struct *work);
102 struct request_queue;
103 struct request;
104
105 /* scsi_proc.c */
106 #ifdef CONFIG_SCSI_PROC_FS
107 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
108 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
109 extern void scsi_proc_host_add(struct Scsi_Host *);
110 extern void scsi_proc_host_rm(struct Scsi_Host *);
111 extern int scsi_init_procfs(void);
112 extern void scsi_exit_procfs(void);
113 #else
114 # define scsi_proc_hostdir_add(sht) do { } while (0)
115 # define scsi_proc_hostdir_rm(sht) do { } while (0)
116 # define scsi_proc_host_add(shost) do { } while (0)
117 # define scsi_proc_host_rm(shost) do { } while (0)
118 # define scsi_init_procfs() (0)
119 # define scsi_exit_procfs() do { } while (0)
120 #endif /* CONFIG_PROC_FS */
121
122 /* scsi_scan.c */
123 extern char scsi_scan_type[];
124 extern int scsi_complete_async_scans(void);
125 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
126 unsigned int, u64, enum scsi_scan_mode);
127 extern void scsi_forget_host(struct Scsi_Host *);
128 extern void scsi_rescan_device(struct device *);
129
130 /* scsi_sysctl.c */
131 #ifdef CONFIG_SYSCTL
132 extern int scsi_init_sysctl(void);
133 extern void scsi_exit_sysctl(void);
134 #else
135 # define scsi_init_sysctl() (0)
136 # define scsi_exit_sysctl() do { } while (0)
137 #endif /* CONFIG_SYSCTL */
138
139 /* scsi_sysfs.c */
140 extern int scsi_sysfs_add_sdev(struct scsi_device *);
141 extern int scsi_sysfs_add_host(struct Scsi_Host *);
142 extern int scsi_sysfs_register(void);
143 extern void scsi_sysfs_unregister(void);
144 extern void scsi_sysfs_device_initialize(struct scsi_device *);
145 extern int scsi_sysfs_target_initialize(struct scsi_device *);
146 extern struct scsi_transport_template blank_transport_template;
147 extern void __scsi_remove_device(struct scsi_device *);
148
149 extern struct bus_type scsi_bus_type;
150 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
151
152 /* scsi_netlink.c */
153 #ifdef CONFIG_SCSI_NETLINK
154 extern void scsi_netlink_init(void);
155 extern void scsi_netlink_exit(void);
156 extern struct sock *scsi_nl_sock;
157 #else
scsi_netlink_init(void)158 static inline void scsi_netlink_init(void) {}
scsi_netlink_exit(void)159 static inline void scsi_netlink_exit(void) {}
160 #endif
161
162 /* scsi_pm.c */
163 #ifdef CONFIG_PM
164 extern const struct dev_pm_ops scsi_bus_pm_ops;
165
166 extern void scsi_autopm_get_target(struct scsi_target *);
167 extern void scsi_autopm_put_target(struct scsi_target *);
168 extern int scsi_autopm_get_host(struct Scsi_Host *);
169 extern void scsi_autopm_put_host(struct Scsi_Host *);
170 #else
scsi_autopm_get_target(struct scsi_target * t)171 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
scsi_autopm_put_target(struct scsi_target * t)172 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
scsi_autopm_get_host(struct Scsi_Host * h)173 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
scsi_autopm_put_host(struct Scsi_Host * h)174 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
175 #endif /* CONFIG_PM */
176
177 extern struct async_domain scsi_sd_pm_domain;
178
179 /* scsi_dh.c */
180 #ifdef CONFIG_SCSI_DH
181 void scsi_dh_add_device(struct scsi_device *sdev);
182 void scsi_dh_release_device(struct scsi_device *sdev);
183 #else
scsi_dh_add_device(struct scsi_device * sdev)184 static inline void scsi_dh_add_device(struct scsi_device *sdev) { }
scsi_dh_release_device(struct scsi_device * sdev)185 static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
186 #endif
187
188 /*
189 * internal scsi timeout functions: for use by mid-layer and transport
190 * classes.
191 */
192
193 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
194
195 #endif /* _SCSI_PRIV_H */
196