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Annotation of prex-old/sys/include/device.h, Revision 1.1.1.1.2.1

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);
1.1.1.1.2.1! nbrk       41:        int     (*ioctl)(device_t, u_long, void *);
1.1       nbrk       42:        int     (*event)(int);
                     43: };
                     44:
                     45: /*
                     46:  * Device structure
                     47:  */
                     48: struct device {
                     49:        int             magic;          /* magic number */
1.1.1.1.2.1! nbrk       50:        int             refcnt;         /* reference count */
1.1       nbrk       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);
1.1.1.1.2.1! nbrk       63: extern int      device_ioctl(device_t, u_long, void *);
1.1       nbrk       64: extern int      device_info(struct info_device *);
                     65: extern void     device_init(void);
                     66:
                     67: #endif /* !_DEVICE_H */