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 request;
   8 struct scsi_cmnd;
   9 struct scsi_device;
  10 struct scsi_host_template;
  11 struct Scsi_Host;
  12 struct scsi_nl_hdr;
  13
  14
  15 /*
  16  * Scsi Error Handler Flags
  17  */
  18 #define SCSI_EH_CANCEL_CMD      0x0001  /* Cancel this cmd */
  19
  20 #define SCSI_SENSE_VALID(scmd) \
  21         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  22
  23 /* hosts.c */
  24 extern int scsi_init_hosts(void);
  25 extern void scsi_exit_hosts(void);
  26
  27 /* scsi.c */
  28 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
  29 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  30 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  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 enum blk_eh_timer_return scsi_times_out(struct request *req);
  50 extern int scsi_error_handler(void *host);
  51 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  52 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  53 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  54 void scsi_eh_ready_devs(struct Scsi_Host *shost,
  55                         struct list_head *work_q,
  56                         struct list_head *done_q);
  57 int scsi_eh_get_sense(struct list_head *work_q,
  58                       struct list_head *done_q);
  59 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  60
  61 /* scsi_lib.c */
  62 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  63 extern void scsi_device_unbusy(struct scsi_device *sdev);
  64 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  65 extern void scsi_next_command(struct scsi_cmnd *cmd);
  66 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  67 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  68 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  69 extern void scsi_free_queue(struct request_queue *q);
  70 extern int scsi_init_queue(void);
  71 extern void scsi_exit_queue(void);
  72 struct request_queue;
  73 struct request;
  74 extern int scsi_prep_fn(struct request_queue *, struct request *);
  75 extern struct kmem_cache *scsi_sdb_cache;
  76
  77 /* scsi_proc.c */
  78 #ifdef CONFIG_SCSI_PROC_FS
  79 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  80 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  81 extern void scsi_proc_host_add(struct Scsi_Host *);
  82 extern void scsi_proc_host_rm(struct Scsi_Host *);
  83 extern int scsi_init_procfs(void);
  84 extern void scsi_exit_procfs(void);
  85 #else
  86 # define scsi_proc_hostdir_add(sht)     do { } while (0)
  87 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
  88 # define scsi_proc_host_add(shost)      do { } while (0)
  89 # define scsi_proc_host_rm(shost)       do { } while (0)
  90 # define scsi_init_procfs()             (0)
  91 # define scsi_exit_procfs()             do { } while (0)
  92 #endif /* CONFIG_PROC_FS */
  93
  94 /* scsi_scan.c */
  95 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
  96                                    unsigned int, unsigned int, int);
  97 extern void scsi_forget_host(struct Scsi_Host *);
  98 extern void scsi_rescan_device(struct device *);
  99
 100 /* scsi_sysctl.c */
 101 #ifdef CONFIG_SYSCTL
 102 extern int scsi_init_sysctl(void);
 103 extern void scsi_exit_sysctl(void);
 104 #else
 105 # define scsi_init_sysctl()             (0)
 106 # define scsi_exit_sysctl()             do { } while (0)
 107 #endif /* CONFIG_SYSCTL */
 108
 109 /* scsi_sysfs.c */
 110 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 111 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 112 extern int scsi_sysfs_register(void);
 113 extern void scsi_sysfs_unregister(void);
 114 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 115 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 116 extern struct scsi_transport_template blank_transport_template;
 117 extern void __scsi_remove_device(struct scsi_device *);
 118
 119 extern struct bus_type scsi_bus_type;
 120 extern struct attribute_group *scsi_sysfs_shost_attr_groups[];
 121
 122 /* scsi_netlink.c */
 123 #ifdef CONFIG_SCSI_NETLINK
 124 extern void scsi_netlink_init(void);
 125 extern void scsi_netlink_exit(void);
 126 extern struct sock *scsi_nl_sock;
 127 #else
 128 static inline void scsi_netlink_init(void) {}
 129 static inline void scsi_netlink_exit(void) {}
 130 #endif
 131
 132 /*
 133  * internal scsi timeout functions: for use by mid-layer and transport
 134  * classes.
 135  */
 136
 137 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 138 extern int scsi_internal_device_block(struct scsi_device *sdev);
 139 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
 140
 141 #endif /* _SCSI_PRIV_H */