1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/device.h>
6 #include <linux/async.h>
7 #include <scsi/scsi_device.h>
14 struct scsi_host_template
;
20 * Scsi Error Handler Flags
22 #define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */
24 #define SCSI_SENSE_VALID(scmd) \
25 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
28 extern int scsi_init_hosts(void);
29 extern void scsi_exit_hosts(void);
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
);
39 static inline void scsi_log_send(struct scsi_cmnd
*cmd
)
41 static inline void scsi_log_completion(struct scsi_cmnd
*cmd
, int disposition
)
47 /* list of keys for the lists */
49 SCSI_DEVINFO_GLOBAL
= 0,
53 extern int scsi_get_device_flags(struct scsi_device
*sdev
,
54 const unsigned char *vendor
,
55 const unsigned char *model
);
56 extern int scsi_get_device_flags_keyed(struct scsi_device
*sdev
,
57 const unsigned char *vendor
,
58 const unsigned char *model
, int key
);
59 extern int scsi_dev_info_list_add_keyed(int compatible
, char *vendor
,
60 char *model
, char *strflags
,
62 extern int scsi_dev_info_list_del_keyed(char *vendor
, char *model
, int key
);
63 extern int scsi_dev_info_add_list(int key
, const char *name
);
64 extern int scsi_dev_info_remove_list(int key
);
66 extern int __init
scsi_init_devinfo(void);
67 extern void scsi_exit_devinfo(void);
70 extern void scmd_eh_abort_handler(struct work_struct
*work
);
71 extern enum blk_eh_timer_return
scsi_times_out(struct request
*req
);
72 extern int scsi_error_handler(void *host
);
73 extern int scsi_decide_disposition(struct scsi_cmnd
*cmd
);
74 extern void scsi_eh_wakeup(struct Scsi_Host
*shost
);
75 extern void scsi_eh_scmd_add(struct scsi_cmnd
*);
76 void scsi_eh_ready_devs(struct Scsi_Host
*shost
,
77 struct list_head
*work_q
,
78 struct list_head
*done_q
);
79 int scsi_eh_get_sense(struct list_head
*work_q
,
80 struct list_head
*done_q
);
81 int scsi_noretry_cmd(struct scsi_cmnd
*scmd
);
84 extern void scsi_add_cmd_to_list(struct scsi_cmnd
*cmd
);
85 extern void scsi_del_cmd_from_list(struct scsi_cmnd
*cmd
);
86 extern int scsi_maybe_unblock_host(struct scsi_device
*sdev
);
87 extern void scsi_device_unbusy(struct scsi_device
*sdev
);
88 extern void scsi_queue_insert(struct scsi_cmnd
*cmd
, int reason
);
89 extern void scsi_io_completion(struct scsi_cmnd
*, unsigned int);
90 extern void scsi_run_host_queues(struct Scsi_Host
*shost
);
91 extern void scsi_requeue_run_queue(struct work_struct
*work
);
92 extern struct request_queue
*scsi_old_alloc_queue(struct scsi_device
*sdev
);
93 extern struct request_queue
*scsi_mq_alloc_queue(struct scsi_device
*sdev
);
94 extern void scsi_start_queue(struct scsi_device
*sdev
);
95 extern int scsi_mq_setup_tags(struct Scsi_Host
*shost
);
96 extern void scsi_mq_destroy_tags(struct Scsi_Host
*shost
);
97 extern int scsi_init_queue(void);
98 extern void scsi_exit_queue(void);
99 extern void scsi_evt_thread(struct work_struct
*work
);
100 struct request_queue
;
104 #ifdef CONFIG_SCSI_PROC_FS
105 extern void scsi_proc_hostdir_add(struct scsi_host_template
*);
106 extern void scsi_proc_hostdir_rm(struct scsi_host_template
*);
107 extern void scsi_proc_host_add(struct Scsi_Host
*);
108 extern void scsi_proc_host_rm(struct Scsi_Host
*);
109 extern int scsi_init_procfs(void);
110 extern void scsi_exit_procfs(void);
112 # define scsi_proc_hostdir_add(sht) do { } while (0)
113 # define scsi_proc_hostdir_rm(sht) do { } while (0)
114 # define scsi_proc_host_add(shost) do { } while (0)
115 # define scsi_proc_host_rm(shost) do { } while (0)
116 # define scsi_init_procfs() (0)
117 # define scsi_exit_procfs() do { } while (0)
118 #endif /* CONFIG_PROC_FS */
121 extern char scsi_scan_type
[];
122 extern int scsi_complete_async_scans(void);
123 extern int scsi_scan_host_selected(struct Scsi_Host
*, unsigned int,
124 unsigned int, u64
, enum scsi_scan_mode
);
125 extern void scsi_forget_host(struct Scsi_Host
*);
126 extern void scsi_rescan_device(struct device
*);
130 extern int scsi_init_sysctl(void);
131 extern void scsi_exit_sysctl(void);
133 # define scsi_init_sysctl() (0)
134 # define scsi_exit_sysctl() do { } while (0)
135 #endif /* CONFIG_SYSCTL */
138 extern int scsi_sysfs_add_sdev(struct scsi_device
*);
139 extern int scsi_sysfs_add_host(struct Scsi_Host
*);
140 extern int scsi_sysfs_register(void);
141 extern void scsi_sysfs_unregister(void);
142 extern void scsi_sysfs_device_initialize(struct scsi_device
*);
143 extern int scsi_sysfs_target_initialize(struct scsi_device
*);
144 extern struct scsi_transport_template blank_transport_template
;
145 extern void __scsi_remove_device(struct scsi_device
*);
147 extern struct bus_type scsi_bus_type
;
148 extern const struct attribute_group
*scsi_sysfs_shost_attr_groups
[];
151 #ifdef CONFIG_SCSI_NETLINK
152 extern void scsi_netlink_init(void);
153 extern void scsi_netlink_exit(void);
154 extern struct sock
*scsi_nl_sock
;
156 static inline void scsi_netlink_init(void) {}
157 static inline void scsi_netlink_exit(void) {}
162 extern const struct dev_pm_ops scsi_bus_pm_ops
;
164 extern void scsi_autopm_get_target(struct scsi_target
*);
165 extern void scsi_autopm_put_target(struct scsi_target
*);
166 extern int scsi_autopm_get_host(struct Scsi_Host
*);
167 extern void scsi_autopm_put_host(struct Scsi_Host
*);
169 static inline void scsi_autopm_get_target(struct scsi_target
*t
) {}
170 static inline void scsi_autopm_put_target(struct scsi_target
*t
) {}
171 static inline int scsi_autopm_get_host(struct Scsi_Host
*h
) { return 0; }
172 static inline void scsi_autopm_put_host(struct Scsi_Host
*h
) {}
173 #endif /* CONFIG_PM */
175 extern struct async_domain scsi_sd_pm_domain
;
176 extern struct async_domain scsi_sd_probe_domain
;
179 #ifdef CONFIG_SCSI_DH
180 void scsi_dh_add_device(struct scsi_device
*sdev
);
181 void scsi_dh_release_device(struct scsi_device
*sdev
);
183 static inline void scsi_dh_add_device(struct scsi_device
*sdev
) { }
184 static inline void scsi_dh_release_device(struct scsi_device
*sdev
) { }
186 static inline void scsi_dh_remove_device(struct scsi_device
*sdev
) { }
189 * internal scsi timeout functions: for use by mid-layer and transport
193 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
195 #endif /* _SCSI_PRIV_H */