mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 12:21:37 +00:00
a37c8875a7
Standardize on _ASM_POWERPC_... prefix for all #include exclusion symbols. Fixup all the non-compilers. Signed-off-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
#ifndef _ASM_POWERPC_IOCTL_H
|
|
#define _ASM_POWERPC_IOCTL_H
|
|
|
|
|
|
/*
|
|
* this was copied from the alpha as it's a bit cleaner there.
|
|
* -- Cort
|
|
*/
|
|
|
|
#define _IOC_NRBITS 8
|
|
#define _IOC_TYPEBITS 8
|
|
#define _IOC_SIZEBITS 13
|
|
#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_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 _IOC_NONE could be 0, but OSF/1 gives it a bit.
|
|
* And this turns out useful to catch old ioctl numbers in header
|
|
* files for us.
|
|
*/
|
|
#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))
|
|
|
|
/* provoke compile error for invalid uses of size argument */
|
|
extern unsigned int __invalid_size_argument_for_IOC;
|
|
#define _IOC_TYPECHECK(t) \
|
|
((sizeof(t) == sizeof(t[1]) && \
|
|
sizeof(t) < (1 << _IOC_SIZEBITS)) ? \
|
|
sizeof(t) : __invalid_size_argument_for_IOC)
|
|
|
|
/* used to create numbers */
|
|
#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0)
|
|
#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size)))
|
|
#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
|
|
#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
|
|
#define _IOR_BAD(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size))
|
|
#define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size))
|
|
#define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
|
|
|
|
/* used to decode them.. */
|
|
#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)
|
|
|
|
/* various drivers, such as the pcmcia stuff, need these... */
|
|
#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)
|
|
|
|
#endif /* _ASM_POWERPC_IOCTL_H */
|