diff options
Diffstat (limited to 'arch/alpha/include/asm/ioctl.h')
-rw-r--r-- | arch/alpha/include/asm/ioctl.h | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/arch/alpha/include/asm/ioctl.h b/arch/alpha/include/asm/ioctl.h deleted file mode 100644 index fc63727..0000000 --- a/arch/alpha/include/asm/ioctl.h +++ /dev/null @@ -1,66 +0,0 @@ -#ifndef _ALPHA_IOCTL_H -#define _ALPHA_IOCTL_H - -/* - * The original linux ioctl numbering scheme was just a general - * "anything goes" setup, where more or less random numbers were - * assigned. Sorry, I was clueless when I started out on this. - * - * On the alpha, we'll try to clean it up a bit, using a more sane - * ioctl numbering, and also trying to be compatible with OSF/1 in - * the process. I'd like to clean it up for the i386 as well, but - * it's so painful recognizing both the new and the old numbers.. - */ - -#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) \ - ((unsigned int) \ - (((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 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) - -/* ...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) - -#endif /* _ALPHA_IOCTL_H */ |