drivers/scsi/scsi_priv.h

   1 #ifndef _SCSI_PRIV_H
   2 #define _SCSI_PRIV_H
   3
   4 #include <linux/config.h>
   5 #include <linux/device.h>
   6
   7 struct request_queue;
   8 struct scsi_cmnd;
   9 struct scsi_device;
  10 struct scsi_host_template;
  11 struct Scsi_Host;
  12
  13
  14 /*
  15  * Scsi Error Handler Flags
  16  */
  17 #define SCSI_EH_CANCEL_CMD      0x0001  /* Cancel this cmd */
  18
  19 #define SCSI_SENSE_VALID(scmd) \
  20         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  21
  22 /* hosts.c */
  23 extern int scsi_init_hosts(void);
  24 extern void scsi_exit_hosts(void);
  25
  26 /* scsi.c */
  27 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
  28 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  29 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  30 extern void __scsi_done(struct scsi_cmnd *cmd);
  31 extern int scsi_retry_command(struct scsi_cmnd *cmd);
  32 #ifdef CONFIG_SCSI_LOGGING
  33 void scsi_log_send(struct scsi_cmnd *cmd);
  34 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  35 #else
  36 static inline void scsi_log_send(struct scsi_cmnd *cmd)
  37         { };
  38 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  39         { };
  40 #endif
  41
  42 /* scsi_devinfo.c */
  43 extern int scsi_get_device_flags(struct scsi_device *sdev,
  44                                  const unsigned char *vendor,
  45                                  const unsigned char *model);
  46 extern int __init scsi_init_devinfo(void);
  47 extern void scsi_exit_devinfo(void);
  48
  49 /* scsi_error.c */
  50 extern void scsi_add_timer(struct scsi_cmnd *, int,
  51                 void (*)(struct scsi_cmnd *));
  52 extern int scsi_delete_timer(struct scsi_cmnd *);
  53 extern void scsi_times_out(struct scsi_cmnd *cmd);
  54 extern int scsi_error_handler(void *host);
  55 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  56 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  57 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  58
  59 /* scsi_lib.c */
  60 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  61 extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
  62 extern void scsi_device_unbusy(struct scsi_device *sdev);
  63 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  64 extern void scsi_next_command(struct scsi_cmnd *cmd);
  65 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  66 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  67 extern void scsi_free_queue(struct request_queue *q);
  68 extern int scsi_init_queue(void);
  69 extern void scsi_exit_queue(void);
  70
  71 /* scsi_proc.c */
  72 #ifdef CONFIG_SCSI_PROC_FS
  73 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  74 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  75 extern void scsi_proc_host_add(struct Scsi_Host *);
  76 extern void scsi_proc_host_rm(struct Scsi_Host *);
  77 extern int scsi_init_procfs(void);
  78 extern void scsi_exit_procfs(void);
  79 #else
  80 # define scsi_proc_hostdir_add(sht)     do { } while (0)
  81 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
  82 # define scsi_proc_host_add(shost)      do { } while (0)
  83 # define scsi_proc_host_rm(shost)       do { } while (0)
  84 # define scsi_init_procfs()             (0)
  85 # define scsi_exit_procfs()             do { } while (0)
  86 #endif /* CONFIG_PROC_FS */
  87
  88 /* scsi_scan.c */
  89 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
  90                                    unsigned int, unsigned int, int);
  91 extern void scsi_forget_host(struct Scsi_Host *);
  92 extern void scsi_rescan_device(struct device *);
  93
  94 /* scsi_sysctl.c */
  95 #ifdef CONFIG_SYSCTL
  96 extern int scsi_init_sysctl(void);
  97 extern void scsi_exit_sysctl(void);
  98 #else
  99 # define scsi_init_sysctl()             (0)
 100 # define scsi_exit_sysctl()             do { } while (0)
 101 #endif /* CONFIG_SYSCTL */
 102
 103 /* scsi_sysfs.c */
 104 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 105 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 106 extern int scsi_sysfs_register(void);
 107 extern void scsi_sysfs_unregister(void);
 108 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 109 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 110 extern struct scsi_transport_template blank_transport_template;
 111 extern void __scsi_remove_device(struct scsi_device *);
 112
 113 extern struct bus_type scsi_bus_type;
 114
 115 /*
 116  * internal scsi timeout functions: for use by mid-layer and transport
 117  * classes.
 118  */
 119
 120 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   (HZ*60)
 121 extern int scsi_internal_device_block(struct scsi_device *sdev);
 122 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
 123
 124 #endif /* _SCSI_PRIV_H */