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scoutos / prex-0.9.0 / include / sys / ioctl.h @ 03e9c04a

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/*
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 * Copyright (c) 2005-2008, Kohsuke Ohtani
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the author nor the names of any co-contibutors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#ifndef _SYS_IOCTL_H_
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#define _SYS_IOCTL_H_
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#include <sys/cdefs.h>
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#include <sys/time.h>
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#include <sys/power.h>
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/*
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 * Ioctl's have the command encoded in the lower word, and the size of
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 * any in or out parameters in the upper word.  The high 3 bits of the
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 * upper word are used to encode the in/out status of the parameter.
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 */
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#define        IOCPARM_MASK        0xff                /* parameter length, at most 13 bits */
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#define        IOCPARM_LEN(x)        (((x) >> 16) & IOCPARM_MASK)
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#define        IOCBASECMD(x)        ((x) & ~(IOCPARM_MASK << 16))
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#define        IOCGROUP(x)        (((x) >> 8) & 0xff)
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#define IOCPARM_MAX        256
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#define        IOC_VOID        0x20000000        /* no parameters */
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#define        IOC_OUT                0x40000000        /* copy out parameters */
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#define        IOC_IN                0x80000000U        /* copy in parameters */
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#define        IOC_INOUT        (IOC_IN|IOC_OUT)
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#define        IOC_DIRMASK        0xe0000000
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/* Prex */
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#define IOC_IVAL        0x10000000        /* input argument is immediate value */
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#define IOC_OVAL        0x08000000        /* return value as output */
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#define        _IOC(inout,group,num,len) \
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        (u_long)(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
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#define        _IO(g,n)        _IOC(IOC_VOID,        (g), (n), 0)
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#define        _IOR(g,n,t)        _IOC(IOC_OUT,        (g), (n), sizeof(t))
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#define        _IOW(g,n,t)        _IOC(IOC_IN,        (g), (n), sizeof(t))
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/* this should be _IORW, but stdio got there first */
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#define        _IOWR(g,n,t)        _IOC(IOC_INOUT,        (g), (n), sizeof(t))
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#define        _IORN(g,n,t)        _IOC((IOC_OVAL|IOC_OUT), (g), (n), sizeof(t))
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#define        _IOWN(g,n,t)        _IOC((IOC_IVAL|IOC_IN),  (g), (n), sizeof(t))
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/*
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 * CPU frequency I/O control code
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 */
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#define CFIOC_GET_INFO                 _IOR('6', 0, struct cpufreqinfo)
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/*
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 * CPU frequency information
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 */
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struct cpufreqinfo {
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        int        maxfreq;        /* max speed in MHz */
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        int        maxvolts;        /* max power in mV */
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        int        freq;                /* current speed in MHz */
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        int        volts;                /* current power in mV */
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};
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/*
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 * Power management I/O control code
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 */
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#define PMIOC_CONNECT                 _IOW('P', 0, int)
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#define PMIOC_QUERY_EVENT         _IOW('P', 1, int)
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#define PMIOC_SET_POWER                 _IOW('P', 2, int)
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#define PMIOC_GET_SUSTMR         _IOR('P', 3, int)
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#define PMIOC_SET_SUSTMR         _IOW('P', 4, int)
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#define PMIOC_GET_DIMTMR         _IOR('P', 5, int)
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#define PMIOC_SET_DIMTMR         _IOW('P', 6, int)
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#define PMIOC_GET_POLICY         _IOR('P', 7, int)
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#define PMIOC_SET_POLICY         _IOW('P', 8, int)
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/*
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 * RTC I/O control code
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 */
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#define RTCIOC_GET_TIME                 _IOR('R', 0, struct __timeval)
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#define RTCIOC_SET_TIME                 _IOW('R', 1, struct __timeval)
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struct __timeval {
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        long        tv_sec;                /* seconds */
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        long        tv_usec;        /* and microseconds */
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};
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__BEGIN_DECLS
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int        ioctl(int, unsigned long, ...);
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__END_DECLS
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#endif        /* !_SYS_IOCTL_H_ */