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/* This code originally came from a nice man, I don't have your name,
* please email cokane@pohl.ececs.uc.edu for proper recognition
* it is basically a derivative of some sys/dhio.h file to work with the 3dfx
* cards
*/
#ifndef TDFX_IO_H
#define TDFX_IO_H
#ifndef KERNEL
#include <sys/types.h>
#endif
/*
* define an ioctl here
*/
#define DHIOCRESET _IO('D', 0) /* reset the voodoo device */
#define GETVOODOO 0x3302
#define SETVOODOO 0x3303
#define MOREVOODOO 0x3300
#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 _IOCV(dir,type,nr,size) \
(((dir) << _IOC_DIRSHIFT) | \
((type) << _IOC_TYPESHIFT) | \
((nr) << _IOC_NRSHIFT) | \
((size) << _IOC_SIZESHIFT))
/* used to create numbers */
#define _IOV(type,nr) _IOCV(_IOC_NONE,(type),(nr),0)
#define _IORV(type,nr,size) _IOCV(_IOC_READ,(type),(nr),sizeof(size))
#define _IOWV(type,nr,size) _IOCV(_IOC_WRITE,(type),(nr),sizeof(size))
#define _IOWRV(type,nr,size) _IOCV(_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 IOCV_IN (_IOC_WRITE << _IOC_DIRSHIFT)
#define IOCV_OUT (_IOC_READ << _IOC_DIRSHIFT)
#define IOCV_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
#define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT)
#define IOCSIZE_SHIFT (_IOC_SIZESHIFT)
#endif
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