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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 */