diff options
Diffstat (limited to 'arch/mips/include/asm/ioctl.h')
| -rw-r--r-- | arch/mips/include/asm/ioctl.h | 85 |
1 files changed, 7 insertions, 78 deletions
diff --git a/arch/mips/include/asm/ioctl.h b/arch/mips/include/asm/ioctl.h index 916163401b2c..c515a1a4c47c 100644 --- a/arch/mips/include/asm/ioctl.h +++ b/arch/mips/include/asm/ioctl.h @@ -3,40 +3,16 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 1995, 96, 99, 2001 Ralf Baechle + * Copyright (C) 1995, 96, 99, 2001 Ralf Baechle <ralf@linux-mips.org> + * Copyright (C) 2009 Wind River Systems + * Written by Ralf Baechle <ralf@linux-mips.org> */ -#ifndef _ASM_IOCTL_H -#define _ASM_IOCTL_H +#ifndef __ASM_IOCTL_H +#define __ASM_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.. - * - * The same applies for for the MIPS ABI; in fact even the macros - * from Linux/Alpha fit almost perfectly. - */ - -#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 @@ -46,53 +22,6 @@ #define _IOC_READ 2U #define _IOC_WRITE 4U -/* - * The following are included for compatibility - */ -#define _IOC_VOID 0x20000000 -#define _IOC_OUT 0x40000000 -#define _IOC_IN 0x80000000 -#define _IOC_INOUT (IOC_IN|IOC_OUT) - -#define _IOC(dir, type, nr, size) \ - (((dir) << _IOC_DIRSHIFT) | \ - ((type) << _IOC_TYPESHIFT) | \ - ((nr) << _IOC_NRSHIFT) | \ - ((size) << _IOC_SIZESHIFT)) - -#ifdef __KERNEL__ -/* 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) -#else -#define _IOC_TYPECHECK(t) (sizeof(t)) -#endif - -/* 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) - -/* ...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) +#include <asm-generic/ioctl.h> -#endif /* _ASM_IOCTL_H */ +#endif /* __ASM_IOCTL_H */ |
