[linux-2.6-block.git] / arch / powerpc / boot / page.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _PPC_BOOT_PAGE_H
#define _PPC_BOOT_PAGE_H
/*
 * Copyright (C) 2001 PPC64 Team, IBM Corp
 */

#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
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
decd300b OH	2	#ifndef _PPC_BOOT_PAGE_H
	3	#define _PPC_BOOT_PAGE_H
	4	/*
	5	* Copyright (C) 2001 PPC64 Team, IBM Corp
decd300b OH	6	*/
	7
	8	#ifdef __ASSEMBLY__
	9	#define ASM_CONST(x) x
	10	#else
	11	#define __ASM_CONST(x) x##UL
	12	#define ASM_CONST(x) __ASM_CONST(x)
	13	#endif
	14
	15	/* PAGE_SHIFT determines the page size */
	16	#define PAGE_SHIFT 12
	17	#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
	18	#define PAGE_MASK (~(PAGE_SIZE-1))
	19
	20	/* align addr on a size boundary - adjust address up/down if needed */
f78f7ed7 AK	21	#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1)))
f78f7ed7 AK	22	#define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1)))
decd300b OH	23
	24	/* align addr on a size boundary - adjust address up if needed */
	25	#define _ALIGN(addr,size) _ALIGN_UP(addr,size)
	26
	27	/* to align the pointer to the (next) page boundary */
	28	#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
	29
	30	#endif /* _PPC_BOOT_PAGE_H */