mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 00:10:09 +00:00
c31ae4bb4a
This provides a reliable way for asm-generic/types.h and other files to find out if it is running on a 32 or 64 bit platform. We cannot use CONFIG_64BIT for this in headers that are included from user space because CONFIG symbols are not available there. We also cannot do it inside of asm/types.h because some headers need the word size but cannot include types.h. The solution is to introduce a new header <asm/bitsperlong.h> that defines both __BITS_PER_LONG for user space and BITS_PER_LONG for usage in the kernel. The asm-generic version falls back to 32 bit unless the architecture overrides it, which I did for all 64 bit platforms. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1994, 1995, 1996, 1999 by Ralf Baechle
|
|
* Copyright (C) 2008 Wind River Systems,
|
|
* written by Ralf Baechle
|
|
* Copyright (C) 1999 Silicon Graphics, Inc.
|
|
*/
|
|
#ifndef _ASM_TYPES_H
|
|
#define _ASM_TYPES_H
|
|
|
|
/*
|
|
* We don't use int-l64.h for the kernel anymore but still use it for
|
|
* userspace to avoid code changes.
|
|
*/
|
|
#if (_MIPS_SZLONG == 64) && !defined(__KERNEL__)
|
|
# include <asm-generic/int-l64.h>
|
|
#else
|
|
# include <asm-generic/int-ll64.h>
|
|
#endif
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
typedef unsigned short umode_t;
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
/*
|
|
* These aren't exported outside the kernel to avoid name space clashes
|
|
*/
|
|
#ifdef __KERNEL__
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#if (defined(CONFIG_HIGHMEM) && defined(CONFIG_64BIT_PHYS_ADDR)) \
|
|
|| defined(CONFIG_64BIT)
|
|
typedef u64 dma_addr_t;
|
|
#else
|
|
typedef u32 dma_addr_t;
|
|
#endif
|
|
typedef u64 dma64_addr_t;
|
|
|
|
/*
|
|
* Don't use phys_t. You've been warned.
|
|
*/
|
|
#ifdef CONFIG_64BIT_PHYS_ADDR
|
|
typedef unsigned long long phys_t;
|
|
#else
|
|
typedef unsigned long phys_t;
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _ASM_TYPES_H */
|