Prex Home / Browse Source - Prex Version: 0.9.0

root/sys/include/device.h

INCLUDED FROM

   1 /*-
   2  * Copyright (c) 2005-2007, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #ifndef _DEVICE_H
  31 #define _DEVICE_H
  33 #include <sys/cdefs.h>
  34 #include <types.h>
  35 #include <sys/device.h>
  37 /*
  38  * Device object
  39  */
  40 struct device {
  41         struct device   *next;          /* linkage on list of all devices */
  42         struct driver   *driver;        /* pointer to the driver object */
  43         char            name[MAXDEVNAME]; /* name of device */
  44         int             flags;          /* D_* flags defined above */
  45         int             active;         /* device has not been destroyed */
  46         int             refcnt;         /* reference count */
  47         void            *private;       /* private storage */
  48 };
__BEGIN_DECLS
  51 int      device_open(const char *, int, device_t *);
  52 int      device_close(device_t);
  53 int      device_read(device_t, void *, size_t *, int);
  54 int      device_write(device_t, void *, size_t *, int);
  55 int      device_ioctl(device_t, u_long, void *);
  56 int      device_info(struct devinfo *);
  57 void     device_init(void);
__BEGIN_DECLS
  60 #endif /* !_DEVICE_H */