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yaml
---
r: 104145
b: refs/heads/master
c: 278864f
h: refs/heads/master
i:
  104143: 7f93a76
v: v3
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Sam Ravnborg authored and David S. Miller committed Jul 18, 2008
1 parent 9affbee commit cdfeb36
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Showing 2 changed files with 2 additions and 68 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 09d3e1baa1f23bba39950990c5dddfb7fcc86238
refs/heads/master: 278864fac79c0c18b0a7f15ca589a4f0845b2fbc
68 changes: 1 addition & 67 deletions trunk/include/asm-sparc64/ioctl.h
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#ifndef _SPARC64_IOCTL_H
#define _SPARC64_IOCTL_H

/*
* Our DIR and SIZE overlap in order to simulteneously provide
* a non-zero _IOC_NONE (for binary compatibility) and
* 14 bits of size as on i386. Here's the layout:
*
* 0xE0000000 DIR
* 0x80000000 DIR = WRITE
* 0x40000000 DIR = READ
* 0x20000000 DIR = NONE
* 0x3FFF0000 SIZE (overlaps NONE bit)
* 0x0000FF00 TYPE
* 0x000000FF NR (CMD)
*/

#define _IOC_NRBITS 8
#define _IOC_TYPEBITS 8
#define _IOC_SIZEBITS 13 /* Actually 14, see below. */
#define _IOC_DIRBITS 3

#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1)
#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1)
#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1)
#define _IOC_XSIZEMASK ((1 << (_IOC_SIZEBITS+1))-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)

#define _IOC_NONE 1U
#define _IOC_READ 2U
#define _IOC_WRITE 4U

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

#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 in drivers despite the leading underscore... */
#define _IOC_DIR(nr) \
( (((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) != 0)? \
(((nr) >> _IOC_DIRSHIFT) & (_IOC_WRITE|_IOC_READ)): \
(((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_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) == 0)? \
0: (((nr) >> _IOC_SIZESHIFT) & _IOC_XSIZEMASK))

/* ...and for the PCMCIA and sound. */
#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_XSIZEMASK << _IOC_SIZESHIFT)
#define IOCSIZE_SHIFT (_IOC_SIZESHIFT)

#endif /* !(_SPARC64_IOCTL_H) */
#include <asm-sparc/ioctl.h>

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