Annotation of prex-old/sys/include/device.h, Revision 1.1
1.1 ! nbrk 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: */
! 29:
! 30: #ifndef _DEVICE_H
! 31: #define _DEVICE_H
! 32:
! 33: /*
! 34: * Device I/O table
! 35: */
! 36: struct devio {
! 37: int (*open) (device_t, int);
! 38: int (*close)(device_t);
! 39: int (*read) (device_t, char *, size_t *, int);
! 40: int (*write)(device_t, char *, size_t *, int);
! 41: int (*ioctl)(device_t, int, u_long);
! 42: int (*event)(int);
! 43: };
! 44:
! 45: /*
! 46: * Device structure
! 47: */
! 48: struct device {
! 49: int magic; /* magic number */
! 50: int ref_count; /* reference count */
! 51: int flags; /* device characteristics */
! 52: struct list link; /* linkage on device list */
! 53: struct devio *devio; /* device i/o table */
! 54: char name[MAXDEVNAME]; /* name of device */
! 55: };
! 56:
! 57: #define device_valid(dev) (kern_area(dev) && ((dev)->magic == DEVICE_MAGIC))
! 58:
! 59: extern int device_open(const char *, int, device_t *);
! 60: extern int device_close(device_t);
! 61: extern int device_read(device_t, void *, size_t *, int);
! 62: extern int device_write(device_t, void *, size_t *, int);
! 63: extern int device_ioctl(device_t, int, u_long);
! 64: extern int device_info(struct info_device *);
! 65: extern void device_dump(void);
! 66: extern void device_init(void);
! 67:
! 68: #endif /* !_DEVICE_H */
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