xref: /openbmc/linux/drivers/scsi/scsi_priv.h (revision 68198dca)
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
39 static inline void scsi_log_send(struct scsi_cmnd *cmd)
40 	{ };
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 {
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 						 int key);
60 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
61 					char *model, char *strflags,
62 					blist_flags_t flags, int key);
63 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
64 extern int scsi_dev_info_add_list(int key, const char *name);
65 extern int scsi_dev_info_remove_list(int key);
66 
67 extern int __init scsi_init_devinfo(void);
68 extern void scsi_exit_devinfo(void);
69 
70 /* scsi_error.c */
71 extern void scmd_eh_abort_handler(struct work_struct *work);
72 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
73 extern int scsi_error_handler(void *host);
74 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
75 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
76 extern void scsi_eh_scmd_add(struct scsi_cmnd *);
77 void scsi_eh_ready_devs(struct Scsi_Host *shost,
78 			struct list_head *work_q,
79 			struct list_head *done_q);
80 int scsi_eh_get_sense(struct list_head *work_q,
81 		      struct list_head *done_q);
82 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
83 
84 /* scsi_lib.c */
85 extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
86 extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
87 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
88 extern void scsi_device_unbusy(struct scsi_device *sdev);
89 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
90 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
91 extern void scsi_run_host_queues(struct Scsi_Host *shost);
92 extern void scsi_requeue_run_queue(struct work_struct *work);
93 extern struct request_queue *scsi_old_alloc_queue(struct scsi_device *sdev);
94 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
95 extern void scsi_start_queue(struct scsi_device *sdev);
96 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
97 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
98 extern int scsi_init_queue(void);
99 extern void scsi_exit_queue(void);
100 extern void scsi_evt_thread(struct work_struct *work);
101 struct request_queue;
102 struct request;
103 
104 /* scsi_proc.c */
105 #ifdef CONFIG_SCSI_PROC_FS
106 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
107 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
108 extern void scsi_proc_host_add(struct Scsi_Host *);
109 extern void scsi_proc_host_rm(struct Scsi_Host *);
110 extern int scsi_init_procfs(void);
111 extern 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 /* CONFIG_PROC_FS */
120 
121 /* scsi_scan.c */
122 extern char scsi_scan_type[];
123 extern int scsi_complete_async_scans(void);
124 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
125 				   unsigned int, u64, enum scsi_scan_mode);
126 extern void scsi_forget_host(struct Scsi_Host *);
127 extern void scsi_rescan_device(struct device *);
128 
129 /* scsi_sysctl.c */
130 #ifdef CONFIG_SYSCTL
131 extern int scsi_init_sysctl(void);
132 extern void scsi_exit_sysctl(void);
133 #else
134 # define scsi_init_sysctl()		(0)
135 # define scsi_exit_sysctl()		do { } while (0)
136 #endif /* CONFIG_SYSCTL */
137 
138 /* scsi_sysfs.c */
139 extern int scsi_sysfs_add_sdev(struct scsi_device *);
140 extern int scsi_sysfs_add_host(struct Scsi_Host *);
141 extern int scsi_sysfs_register(void);
142 extern void scsi_sysfs_unregister(void);
143 extern void scsi_sysfs_device_initialize(struct scsi_device *);
144 extern int scsi_sysfs_target_initialize(struct scsi_device *);
145 extern struct scsi_transport_template blank_transport_template;
146 extern void __scsi_remove_device(struct scsi_device *);
147 
148 extern struct bus_type scsi_bus_type;
149 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
150 
151 /* scsi_netlink.c */
152 #ifdef CONFIG_SCSI_NETLINK
153 extern void scsi_netlink_init(void);
154 extern void scsi_netlink_exit(void);
155 extern struct sock *scsi_nl_sock;
156 #else
157 static inline void scsi_netlink_init(void) {}
158 static inline void scsi_netlink_exit(void) {}
159 #endif
160 
161 /* scsi_pm.c */
162 #ifdef CONFIG_PM
163 extern const struct dev_pm_ops scsi_bus_pm_ops;
164 
165 extern void scsi_autopm_get_target(struct scsi_target *);
166 extern void scsi_autopm_put_target(struct scsi_target *);
167 extern int scsi_autopm_get_host(struct Scsi_Host *);
168 extern void scsi_autopm_put_host(struct Scsi_Host *);
169 #else
170 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
171 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
172 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
173 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
174 #endif /* CONFIG_PM */
175 
176 extern struct async_domain scsi_sd_pm_domain;
177 extern struct async_domain scsi_sd_probe_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
184 static inline void scsi_dh_add_device(struct scsi_device *sdev) { }
185 static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
186 #endif
187 static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
188 
189 /*
190  * internal scsi timeout functions: for use by mid-layer and transport
191  * classes.
192  */
193 
194 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT	600	/* units in seconds */
195 
196 #endif /* _SCSI_PRIV_H */
197