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/*

 * Copyright (c) 2005-2008, Kohsuke Ohtani

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the author nor the names of any co-contibutors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#ifndef _SYS_IOCTL_H_

#define _SYS_IOCTL_H_

#include <sys/cdefs.h>

#include <sys/time.h>

#include <sys/power.h>

/*

 * Ioctl's have the command encoded in the lower word, and the size of

 * any in or out parameters in the upper word.  The high 3 bits of the

 * upper word are used to encode the in/out status of the parameter.

 */

#define        IOCPARM_MASK        0xff                /* parameter length, at most 13 bits */

#define        IOCPARM_LEN(x)        (((x) >> 16) & IOCPARM_MASK)

#define        IOCBASECMD(x)        ((x) & ~(IOCPARM_MASK << 16))

#define        IOCGROUP(x)        (((x) >> 8) & 0xff)

#define IOCPARM_MAX        256

#define        IOC_VOID        0x20000000        /* no parameters */

#define        IOC_OUT                0x40000000        /* copy out parameters */

#define        IOC_IN                0x80000000U        /* copy in parameters */

#define        IOC_INOUT        (IOC_IN|IOC_OUT)

#define        IOC_DIRMASK        0xe0000000

/* Prex */

#define IOC_IVAL        0x10000000        /* input argument is immediate value */

#define IOC_OVAL        0x08000000        /* return value as output */

#define        _IOC(inout,group,num,len) \

        (u_long)(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))

#define        _IO(g,n)        _IOC(IOC_VOID,        (g), (n), 0)

#define        _IOR(g,n,t)        _IOC(IOC_OUT,        (g), (n), sizeof(t))

#define        _IOW(g,n,t)        _IOC(IOC_IN,        (g), (n), sizeof(t))

/* this should be _IORW, but stdio got there first */

#define        _IOWR(g,n,t)        _IOC(IOC_INOUT,        (g), (n), sizeof(t))

#define        _IORN(g,n,t)        _IOC((IOC_OVAL|IOC_OUT), (g), (n), sizeof(t))

#define        _IOWN(g,n,t)        _IOC((IOC_IVAL|IOC_IN),  (g), (n), sizeof(t))

/*

 * CPU frequency I/O control code

 */

#define CFIOC_GET_INFO                 _IOR('6', 0, struct cpufreqinfo)

/*

 * CPU frequency information

 */

struct cpufreqinfo {

        int        maxfreq;        /* max speed in MHz */

        int        maxvolts;        /* max power in mV */

        int        freq;                /* current speed in MHz */

        int        volts;                /* current power in mV */

};

/*

 * Power management I/O control code

 */

#define PMIOC_CONNECT                 _IOW('P', 0, int)

#define PMIOC_QUERY_EVENT         _IOW('P', 1, int)

#define PMIOC_SET_POWER                 _IOW('P', 2, int)

#define PMIOC_GET_SUSTMR         _IOR('P', 3, int)

#define PMIOC_SET_SUSTMR         _IOW('P', 4, int)

#define PMIOC_GET_DIMTMR         _IOR('P', 5, int)

#define PMIOC_SET_DIMTMR         _IOW('P', 6, int)

#define PMIOC_GET_POLICY         _IOR('P', 7, int)

#define PMIOC_SET_POLICY         _IOW('P', 8, int)

/*

 * RTC I/O control code

 */

#define RTCIOC_GET_TIME                 _IOR('R', 0, struct __timeval)

#define RTCIOC_SET_TIME                 _IOW('R', 1, struct __timeval)

struct __timeval {

        long        tv_sec;                /* seconds */

        long        tv_usec;        /* and microseconds */

};

__BEGIN_DECLS

int        ioctl(int, unsigned long, ...);

__END_DECLS

#endif        /* !_SYS_IOCTL_H_ */