drivers/scsi/scsi_priv.h

   1 #ifndef _SCSI_PRIV_H
   2 #define _SCSI_PRIV_H
   3
   4 #include <linux/device.h>
   5
   6 struct request_queue;
   7 struct scsi_cmnd;
   8 struct scsi_device;
   9 struct scsi_host_template;
  10 struct Scsi_Host;
  11
  12
  13 /*
  14  * Scsi Error Handler Flags
  15  */
  16 #define SCSI_EH_CANCEL_CMD      0x0001  /* Cancel this cmd */
  17
  18 #define SCSI_SENSE_VALID(scmd) \
  19         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  20
  21 /* hosts.c */
  22 extern int scsi_init_hosts(void);
  23 extern void scsi_exit_hosts(void);
  24
  25 /* scsi.c */
  26 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
  27 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  28 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  29 extern void __scsi_done(struct scsi_cmnd *cmd);
  30 extern int scsi_retry_command(struct scsi_cmnd *cmd);
  31 #ifdef CONFIG_SCSI_LOGGING
  32 void scsi_log_send(struct scsi_cmnd *cmd);
  33 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  34 #else
  35 static inline void scsi_log_send(struct scsi_cmnd *cmd)
  36         { };
  37 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  38         { };
  39 #endif
  40
  41 /* scsi_devinfo.c */
  42 extern int scsi_get_device_flags(struct scsi_device *sdev,
  43                                  const unsigned char *vendor,
  44                                  const unsigned char *model);
  45 extern int __init scsi_init_devinfo(void);
  46 extern void scsi_exit_devinfo(void);
  47
  48 /* scsi_error.c */
  49 extern void scsi_add_timer(struct scsi_cmnd *, int,
  50                 void (*)(struct scsi_cmnd *));
  51 extern int scsi_delete_timer(struct scsi_cmnd *);
  52 extern void scsi_times_out(struct scsi_cmnd *cmd);
  53 extern int scsi_error_handler(void *host);
  54 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  55 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  56 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  57
  58 /* scsi_lib.c */
  59 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  60 extern void scsi_device_unbusy(struct scsi_device *sdev);
  61 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  62 extern void scsi_next_command(struct scsi_cmnd *cmd);
  63 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  64 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  65 extern void scsi_free_queue(struct request_queue *q);
  66 extern int scsi_init_queue(void);
  67 extern void scsi_exit_queue(void);
  68
  69 /* scsi_proc.c */
  70 #ifdef CONFIG_SCSI_PROC_FS
  71 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  72 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  73 extern void scsi_proc_host_add(struct Scsi_Host *);
  74 extern void scsi_proc_host_rm(struct Scsi_Host *);
  75 extern int scsi_init_procfs(void);
  76 extern void scsi_exit_procfs(void);
  77 #else
  78 # define scsi_proc_hostdir_add(sht)     do { } while (0)
  79 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
  80 # define scsi_proc_host_add(shost)      do { } while (0)
  81 # define scsi_proc_host_rm(shost)       do { } while (0)
  82 # define scsi_init_procfs()             (0)
  83 # define scsi_exit_procfs()             do { } while (0)
  84 #endif /* CONFIG_PROC_FS */
  85
  86 /* scsi_scan.c */
  87 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
  88                                    unsigned int, unsigned int, int);
  89 extern void scsi_forget_host(struct Scsi_Host *);
  90 extern void scsi_rescan_device(struct device *);
  91
  92 /* scsi_sysctl.c */
  93 #ifdef CONFIG_SYSCTL
  94 extern int scsi_init_sysctl(void);
  95 extern void scsi_exit_sysctl(void);
  96 #else
  97 # define scsi_init_sysctl()             (0)
  98 # define scsi_exit_sysctl()             do { } while (0)
  99 #endif /* CONFIG_SYSCTL */
 100
 101 /* scsi_sysfs.c */
 102 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 103 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 104 extern int scsi_sysfs_register(void);
 105 extern void scsi_sysfs_unregister(void);
 106 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 107 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 108 extern struct scsi_transport_template blank_transport_template;
 109 extern void __scsi_remove_device(struct scsi_device *);
 110
 111 extern struct bus_type scsi_bus_type;
 112
 113 /*
 114  * internal scsi timeout functions: for use by mid-layer and transport
 115  * classes.
 116  */
 117
 118 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 119 extern int scsi_internal_device_block(struct scsi_device *sdev);
 120 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
 121
 122 #endif /* _SCSI_PRIV_H */