/**** from <asm/ioctl.h> ****/

/* ioctl command encoding: 32 bits total, command in lower 16 bits,
 * size of the parameter structure in the lower 14 bits of the
 * upper 16 bits.
 * Encoding the size of the parameter structure in the ioctl request
 * is useful for catching programs compiled with old versions
 * and to avoid overwriting user space outside the user buffer area.
 * The highest 2 bits are reserved for indicating the ``access mode''.
 * NOTE: This limits the max parameter size to 16kB -1 !
 */

/*
 * The following is for compatibility across the various Linux
 * platforms.  The i386 ioctl numbering scheme doesn't really enforce
 * a type field.  De facto, however, the top 8 bits of the lower 16
 * bits are indeed used as a type field, so we might just as well make
 * this explicit here.  Please be sure to use the decoding macros
 * below from now on.
 */
#define _IOC_NRBITS     8
#define _IOC_TYPEBITS   8
#define _IOC_SIZEBITS   14
#define _IOC_DIRBITS    2

#define _IOC_NRMASK     ((1 << _IOC_NRBITS)-1)
#define _IOC_TYPEMASK   ((1 << _IOC_TYPEBITS)-1)
#define _IOC_SIZEMASK   ((1 << _IOC_SIZEBITS)-1)
#define _IOC_DIRMASK    ((1 << _IOC_DIRBITS)-1)

#define _IOC_NRSHIFT    0
#define _IOC_TYPESHIFT  (_IOC_NRSHIFT+_IOC_NRBITS)
#define _IOC_SIZESHIFT  (_IOC_TYPESHIFT+_IOC_TYPEBITS)
#define _IOC_DIRSHIFT   (_IOC_SIZESHIFT+_IOC_SIZEBITS)

/*
 * Direction bits.
 */
#define _IOC_NONE       0U
#define _IOC_WRITE      1U
#define _IOC_READ       2U

#define _IOC(dir,type,nr,size) \
        (((dir)  << _IOC_DIRSHIFT) | \
         ((type) << _IOC_TYPESHIFT) | \
         ((nr)   << _IOC_NRSHIFT) | \
         ((size) << _IOC_SIZESHIFT))

/* used to create numbers */
#define _IO(type,nr)            _IOC(_IOC_NONE,(type),(nr),0)
#define _IOR(type,nr,size)      _IOC(_IOC_READ,(type),(nr),sizeof(size))
#define _IOW(type,nr,size)      _IOC(_IOC_WRITE,(type),(nr),sizeof(size))
#define _IOWR(type,nr,size)     _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))

/* used to decode ioctl numbers.. */
#define _IOC_DIR(nr)            (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
#define _IOC_TYPE(nr)           (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
#define _IOC_NR(nr)             (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
#define _IOC_SIZE(nr)           (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)

/* ...and for the drivers/sound files... */

#define IOC_IN          (_IOC_WRITE << _IOC_DIRSHIFT)
#define IOC_OUT         (_IOC_READ << _IOC_DIRSHIFT)
#define IOC_INOUT       ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
#define IOCSIZE_MASK    (_IOC_SIZEMASK << _IOC_SIZESHIFT)
#define IOCSIZE_SHIFT   (_IOC_SIZESHIFT)

/**** From <asm/ioctls.h> ****/

/* 0x54 is just a magic number to make these relatively unique ('T') */

#define TCGETS          0x5401
#define TCSETS          0x5402
#define TCSETSW         0x5403
#define TCSETSF         0x5404
#define TCGETA          0x5405
#define TCSETA          0x5406
#define TCSETAW         0x5407
#define TCSETAF         0x5408
#define TCSBRK          0x5409
#define TCXONC          0x540A
#define TCFLSH          0x540B
#define TIOCEXCL        0x540C
#define TIOCNXCL        0x540D
#define TIOCSCTTY       0x540E
#define TIOCGPGRP       0x540F
#define TIOCSPGRP       0x5410
#define TIOCOUTQ        0x5411
#define TIOCSTI         0x5412
#define TIOCGWINSZ      0x5413
#define TIOCSWINSZ      0x5414
#define TIOCMGET        0x5415
#define TIOCMBIS        0x5416
#define TIOCMBIC        0x5417
#define TIOCMSET        0x5418
#define TIOCGSOFTCAR    0x5419
#define TIOCSSOFTCAR    0x541A
#define FIONREAD        0x541B
#define TIOCINQ         FIONREAD
#define TIOCLINUX       0x541C
#define TIOCCONS        0x541D
#define TIOCGSERIAL     0x541E
#define TIOCSSERIAL     0x541F
#define TIOCPKT         0x5420
#define FIONBIO         0x5421
#define TIOCNOTTY       0x5422
#define TIOCSETD        0x5423
#define TIOCGETD        0x5424
#define TCSBRKP         0x5425  /* Needed for POSIX tcsendbreak() */
#define TIOCTTYGSTRUCT  0x5426  /* For debugging only */
#define TIOCSBRK        0x5427  /* BSD compatibility */
#define TIOCCBRK        0x5428  /* BSD compatibility */
#define TIOCGSID        0x5429  /* Return the session ID of FD */
#define TIOCGPTN        _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
#define TIOCSPTLCK      _IOW('T',0x31, int)  /* Lock/unlock Pty */

#define FIONCLEX        0x5450  /* these numbers need to be adjusted. */
#define FIOCLEX         0x5451
#define FIOASYNC        0x5452
#define TIOCSERCONFIG   0x5453
#define TIOCSERGWILD    0x5454
#define TIOCSERSWILD    0x5455
#define TIOCGLCKTRMIOS  0x5456
#define TIOCSLCKTRMIOS  0x5457
#define TIOCSERGSTRUCT  0x5458 /* For debugging only */
#define TIOCSERGETLSR   0x5459 /* Get line status register */
#define TIOCSERGETMULTI 0x545A /* Get multiport config  */
#define TIOCSERSETMULTI 0x545B /* Set multiport config */

#define TIOCMIWAIT      0x545C  /* wait for a change on serial input line(s) */
#define TIOCGICOUNT     0x545D  /* read serial port inline interrupt counts */
#define TIOCGHAYESESP   0x545E  /* Get Hayes ESP configuration */
#define TIOCSHAYESESP   0x545F  /* Set Hayes ESP configuration */
#define FIOQSIZE        0x5460

/* Used for packet mode */
#define TIOCPKT_DATA             0
#define TIOCPKT_FLUSHREAD        1
#define TIOCPKT_FLUSHWRITE       2
#define TIOCPKT_STOP             4
#define TIOCPKT_START            8
#define TIOCPKT_NOSTOP          16
#define TIOCPKT_DOSTOP          32

#define TIOCSER_TEMT    0x01    /* Transmitter physically empty */

