sys/sys/hotplug.h

   1 /*      $OpenBSD: hotplug.h,v 1.5 2006/05/28 16:52:34 mk Exp $  */
   2 /*
   3  * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #ifndef _SYS_HOTPLUG_H_
  19 #define _SYS_HOTPLUG_H_
  20
  21 #include <sys/bus.h>
  22
  23 /*
  24  * Minimal device structures.
  25  * Note that all ``system'' device types are listed here.
  26  */
  27 enum obsd_devclass {
  28         DV_DULL,                /* generic, no special info */
  29         DV_CPU,                 /* CPU (carries resource utilization) */
  30         DV_DISK,                /* disk drive (label, etc) */
  31         DV_IFNET,               /* network interface */
  32         DV_TAPE,                /* tape device */
  33         DV_TTY                  /* serial line interface (???) */
  34 };
  35
  36 /*
  37  * Public interface for enqueuing and dequeueing device
  38  * attachment and detachment notifications.
  39  */
  40
  41 #define HOTPLUG_DEVAT           0x01    /* device attached      */
  42 #define HOTPLUG_DEVDT           0x02    /* device detached      */
  43
  44 struct hotplug_event {
  45         int             he_type;        /* event type           */
  46         enum obsd_devclass      he_devclass;    /* device class         */
  47         char            he_devname[16]; /* device name          */
  48 };
  49
  50 #ifdef _KERNEL
  51 struct hotplug_device {
  52         cdev_t  dev;
  53         char    *name;
  54 };
  55 void    hotplug_device_attach(device_t dev);
  56 void    hotplug_device_detach(device_t dev);
  57 #endif
  58
  59 #endif  /* _SYS_HOTPLUG_H_ */