[mirror_ubuntu-artful-kernel.git] / arch / powerpc / boot / page.h

#ifndef _PPC_BOOT_PAGE_H
#define _PPC_BOOT_PAGE_H
/*
 * Copyright (C) 2001 PPC64 Team, IBM Corp
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifdef __ASSEMBLY__
#define ASM_CONST(x) x
#else
#define __ASM_CONST(x) x##UL
#define ASM_CONST(x) __ASM_CONST(x)
#endif

/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT	12
#define PAGE_SIZE	(ASM_CONST(1) << PAGE_SHIFT)
#define PAGE_MASK	(~(PAGE_SIZE-1))

/* align addr on a size boundary - adjust address up/down if needed */
#define _ALIGN_UP(addr, size)	(((addr)+((size)-1))&(~((typeof(addr))(size)-1)))
#define _ALIGN_DOWN(addr, size)	((addr)&(~((typeof(addr))(size)-1)))

/* align addr on a size boundary - adjust address up if needed */
#define _ALIGN(addr,size)     _ALIGN_UP(addr,size)

/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr)	_ALIGN(addr, PAGE_SIZE)

#endif				/* _PPC_BOOT_PAGE_H */
Commit	Line	Data
decd300b OH	1	#ifndef _PPC_BOOT_PAGE_H
	2	#define _PPC_BOOT_PAGE_H
	3	/*
	4	* Copyright (C) 2001 PPC64 Team, IBM Corp
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the License, or (at your option) any later version.
	10	*/
	11
	12	#ifdef __ASSEMBLY__
	13	#define ASM_CONST(x) x
	14	#else
	15	#define __ASM_CONST(x) x##UL
	16	#define ASM_CONST(x) __ASM_CONST(x)
	17	#endif
	18
	19	/* PAGE_SHIFT determines the page size */
	20	#define PAGE_SHIFT 12
	21	#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
	22	#define PAGE_MASK (~(PAGE_SIZE-1))
	23
	24	/* align addr on a size boundary - adjust address up/down if needed */
f78f7ed7 AK	25	#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1)))
f78f7ed7 AK	26	#define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1)))
decd300b OH	27
	28	/* align addr on a size boundary - adjust address up if needed */
	29	#define _ALIGN(addr,size) _ALIGN_UP(addr,size)
	30
	31	/* to align the pointer to the (next) page boundary */
	32	#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
	33
	34	#endif /* _PPC_BOOT_PAGE_H */