4 #include <linux/config.h>
5 #include <linux/device.h>
10 struct scsi_host_template;
16 * Magic values for certain scsi structs. Shouldn't ever be used.
18 #define SCSI_CMND_MAGIC 0xE25C23A5
19 #define SCSI_REQ_MAGIC 0x75F6D354
22 * Scsi Error Handler Flags
24 #define scsi_eh_eflags_chk(scp, flags) \
25 ((scp)->eh_eflags & (flags))
26 #define scsi_eh_eflags_set(scp, flags) \
27 do { (scp)->eh_eflags |= (flags); } while(0)
28 #define scsi_eh_eflags_clr(scp, flags) \
29 do { (scp)->eh_eflags &= ~(flags); } while(0)
30 #define scsi_eh_eflags_clr_all(scp) \
33 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
34 #define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */
36 #define SCSI_SENSE_VALID(scmd) \
37 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
40 * Special value for scanning to specify scanning or rescanning of all
41 * possible channels, (target) ids, or luns on a given shost.
43 #define SCAN_WILD_CARD ~0
46 extern int scsi_init_hosts(void);
47 extern void scsi_exit_hosts(void);
50 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
51 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
52 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
53 extern int scsi_insert_special_req(struct scsi_request *sreq, int);
54 extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
55 struct scsi_request *sreq);
56 extern void __scsi_release_request(struct scsi_request *sreq);
57 extern void __scsi_done(struct scsi_cmnd *cmd);
58 #ifdef CONFIG_SCSI_LOGGING
59 void scsi_log_send(struct scsi_cmnd *cmd);
60 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
62 static inline void scsi_log_send(struct scsi_cmnd *cmd)
64 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
69 extern int scsi_get_device_flags(struct scsi_device *sdev,
70 unsigned char *vendor, unsigned char *model);
71 extern int __init scsi_init_devinfo(void);
72 extern void scsi_exit_devinfo(void);
75 extern void scsi_times_out(struct scsi_cmnd *cmd);
76 extern int scsi_error_handler(void *host);
77 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
78 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
79 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
82 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
83 extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
84 extern void scsi_device_unbusy(struct scsi_device *sdev);
85 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
86 extern void scsi_next_command(struct scsi_cmnd *cmd);
87 extern void scsi_run_host_queues(struct Scsi_Host *shost);
88 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
89 extern void scsi_free_queue(struct request_queue *q);
90 extern int scsi_init_queue(void);
91 extern void scsi_exit_queue(void);
94 #ifdef CONFIG_SCSI_PROC_FS
95 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
96 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
97 extern void scsi_proc_host_add(struct Scsi_Host *);
98 extern void scsi_proc_host_rm(struct Scsi_Host *);
99 extern int scsi_init_procfs(void);
100 extern void scsi_exit_procfs(void);
102 # define scsi_proc_hostdir_add(sht) do { } while (0)
103 # define scsi_proc_hostdir_rm(sht) do { } while (0)
104 # define scsi_proc_host_add(shost) do { } while (0)
105 # define scsi_proc_host_rm(shost) do { } while (0)
106 # define scsi_init_procfs() (0)
107 # define scsi_exit_procfs() do { } while (0)
108 #endif /* CONFIG_PROC_FS */
111 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
112 unsigned int, unsigned int, int);
113 extern void scsi_forget_host(struct Scsi_Host *);
114 extern void scsi_rescan_device(struct device *);
118 extern int scsi_init_sysctl(void);
119 extern void scsi_exit_sysctl(void);
121 # define scsi_init_sysctl() (0)
122 # define scsi_exit_sysctl() do { } while (0)
123 #endif /* CONFIG_SYSCTL */
126 extern int scsi_sysfs_add_sdev(struct scsi_device *);
127 extern int scsi_sysfs_add_host(struct Scsi_Host *);
128 extern int scsi_sysfs_register(void);
129 extern void scsi_sysfs_unregister(void);
130 extern void scsi_sysfs_device_initialize(struct scsi_device *);
131 extern int scsi_sysfs_target_initialize(struct scsi_device *);
132 extern struct scsi_transport_template blank_transport_template;
134 extern struct bus_type scsi_bus_type;
137 * internal scsi timeout functions: for use by mid-layer and transport
141 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
142 extern int scsi_internal_device_block(struct scsi_device *sdev);
143 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
145 #endif /* _SCSI_PRIV_H */