| 1 |
1276 |
phoenix |
/* $Id: ioctl.h,v 1.1.1.1 2004-04-15 03:01:11 phoenix Exp $ */
|
| 2 |
|
|
#ifndef _SPARC64_IOCTL_H
|
| 3 |
|
|
#define _SPARC64_IOCTL_H
|
| 4 |
|
|
|
| 5 |
|
|
/*
|
| 6 |
|
|
* Our DIR and SIZE overlap in order to simulteneously provide
|
| 7 |
|
|
* a non-zero _IOC_NONE (for binary compatibility) and
|
| 8 |
|
|
* 14 bits of size as on i386. Here's the layout:
|
| 9 |
|
|
*
|
| 10 |
|
|
* 0xE0000000 DIR
|
| 11 |
|
|
* 0x80000000 DIR = WRITE
|
| 12 |
|
|
* 0x40000000 DIR = READ
|
| 13 |
|
|
* 0x20000000 DIR = NONE
|
| 14 |
|
|
* 0x3FFF0000 SIZE (overlaps NONE bit)
|
| 15 |
|
|
* 0x0000FF00 TYPE
|
| 16 |
|
|
* 0x000000FF NR (CMD)
|
| 17 |
|
|
*/
|
| 18 |
|
|
|
| 19 |
|
|
#define _IOC_NRBITS 8
|
| 20 |
|
|
#define _IOC_TYPEBITS 8
|
| 21 |
|
|
#define _IOC_SIZEBITS 13 /* Actually 14, see below. */
|
| 22 |
|
|
#define _IOC_DIRBITS 3
|
| 23 |
|
|
|
| 24 |
|
|
#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1)
|
| 25 |
|
|
#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1)
|
| 26 |
|
|
#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1)
|
| 27 |
|
|
#define _IOC_XSIZEMASK ((1 << (_IOC_SIZEBITS+1))-1)
|
| 28 |
|
|
#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1)
|
| 29 |
|
|
|
| 30 |
|
|
#define _IOC_NRSHIFT 0
|
| 31 |
|
|
#define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS)
|
| 32 |
|
|
#define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS)
|
| 33 |
|
|
#define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS)
|
| 34 |
|
|
|
| 35 |
|
|
#define _IOC_NONE 1U
|
| 36 |
|
|
#define _IOC_READ 2U
|
| 37 |
|
|
#define _IOC_WRITE 4U
|
| 38 |
|
|
|
| 39 |
|
|
#define _IOC(dir,type,nr,size) \
|
| 40 |
|
|
(((dir) << _IOC_DIRSHIFT) | \
|
| 41 |
|
|
((type) << _IOC_TYPESHIFT) | \
|
| 42 |
|
|
((nr) << _IOC_NRSHIFT) | \
|
| 43 |
|
|
((size) << _IOC_SIZESHIFT))
|
| 44 |
|
|
|
| 45 |
|
|
#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0)
|
| 46 |
|
|
#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size))
|
| 47 |
|
|
#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size))
|
| 48 |
|
|
#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
|
| 49 |
|
|
|
| 50 |
|
|
/* Used to decode ioctl numbers in drivers despite the leading underscore... */
|
| 51 |
|
|
#define _IOC_DIR(nr) \
|
| 52 |
|
|
( (((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) != 0)? \
|
| 53 |
|
|
(((nr) >> _IOC_DIRSHIFT) & (_IOC_WRITE|_IOC_READ)): \
|
| 54 |
|
|
(((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) )
|
| 55 |
|
|
#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
|
| 56 |
|
|
#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
|
| 57 |
|
|
#define _IOC_SIZE(nr) \
|
| 58 |
|
|
((((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) == 0)? \
|
| 59 |
|
|
0: (((nr) >> _IOC_SIZESHIFT) & _IOC_XSIZEMASK))
|
| 60 |
|
|
|
| 61 |
|
|
/* ...and for the PCMCIA and sound. */
|
| 62 |
|
|
#define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT)
|
| 63 |
|
|
#define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT)
|
| 64 |
|
|
#define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
|
| 65 |
|
|
#define IOCSIZE_MASK (_IOC_XSIZEMASK << _IOC_SIZESHIFT)
|
| 66 |
|
|
#define IOCSIZE_SHIFT (_IOC_SIZESHIFT)
|
| 67 |
|
|
|
| 68 |
|
|
#endif /* !(_SPARC64_IOCTL_H) */
|
