[linux-2.6-block.git] / arch / score / include / asm / page.h

#ifndef _ASM_SCORE_PAGE_H
#define _ASM_SCORE_PAGE_H

#include <linux/pfn.h>

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

#ifdef __KERNEL__

#ifndef __ASSEMBLY__

#define PAGE_UP(addr)	(((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
#define PAGE_DOWN(addr)	((addr)&(~((PAGE_SIZE)-1)))

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

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

/*
 * PAGE_OFFSET -- the first address of the first page of memory. When not
 * using MMU this corresponds to the first free page in physical memory (aligned
 * on a page boundary).
 */
#define PAGE_OFFSET		(0xA0000000UL)

#define clear_page(pgaddr)			memset((pgaddr), 0, PAGE_SIZE)
#define copy_page(to, from)			memcpy((to), (from), PAGE_SIZE)

#define clear_user_page(pgaddr, vaddr, page)	memset((pgaddr), 0, PAGE_SIZE)
#define copy_user_page(vto, vfrom, vaddr, topg) \
			memcpy((vto), (vfrom), PAGE_SIZE)

/*
 * These are used to make use of C type-checking..
 */

typedef struct { unsigned long pte; } pte_t;		/* page table entry */
typedef struct { unsigned long pgd; } pgd_t;		/* PGD table entry */
typedef struct { unsigned long pgprot; } pgprot_t;
typedef struct page *pgtable_t;

#define pte_val(x)	((x).pte)
#define pgd_val(x)	((x).pgd)
#define pgprot_val(x)	((x).pgprot)

#define __pte(x)	((pte_t) { (x) })
#define __pgd(x)	((pgd_t) { (x) })
#define __pgprot(x)	((pgprot_t) { (x) })

extern unsigned long max_low_pfn;
extern unsigned long min_low_pfn;
extern unsigned long max_pfn;

#define __pa(x)		((unsigned long)(x) - PAGE_OFFSET)
#define __va(x)		((void *)((unsigned long) (x) + PAGE_OFFSET))

#define phys_to_pfn(phys)	(PFN_DOWN(phys))
#define pfn_to_phys(pfn)	(PFN_PHYS(pfn))

#define virt_to_pfn(vaddr)	(phys_to_pfn((__pa(vaddr))))
#define pfn_to_virt(pfn)	__va(pfn_to_phys((pfn)))

#define virt_to_page(vaddr)	(pfn_to_page(virt_to_pfn(vaddr)))
#define page_to_virt(page)	(pfn_to_virt(page_to_pfn(page)))

#define page_to_phys(page)	(pfn_to_phys(page_to_pfn(page)))
#define page_to_bus(page)	(page_to_phys(page))
#define phys_to_page(paddr)	(pfn_to_page(phys_to_pfn(paddr)))

#define pfn_valid(pfn)		((pfn) >= min_low_pfn && (pfn) < max_mapnr)

#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)

#endif /* __ASSEMBLY__ */

#define virt_addr_valid(vaddr)	(pfn_valid(virt_to_pfn(vaddr)))

#endif /* __KERNEL__ */

#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>

#endif /* _ASM_SCORE_PAGE_H */
Commit	Line	Data
6bc9a396 CL	1	#ifndef _ASM_SCORE_PAGE_H
	2	#define _ASM_SCORE_PAGE_H
	3
	4	#include <linux/pfn.h>
	5
	6	/* PAGE_SHIFT determines the page size */
	7	#define PAGE_SHIFT (12)
	8	#define PAGE_SIZE (1UL << PAGE_SHIFT)
	9	#define PAGE_MASK (~(PAGE_SIZE-1))
	10
	11	#ifdef __KERNEL__
	12
	13	#ifndef __ASSEMBLY__
	14
	15	#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
	16	#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1)))
	17
	18	/* align addr on a size boundary - adjust address up/down if needed */
	19	#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1)))
	20	#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1)))
	21
	22	/* align addr on a size boundary - adjust address up if needed */
	23	#define _ALIGN(addr, size) _ALIGN_UP(addr, size)
	24
	25	/*
	26	* PAGE_OFFSET -- the first address of the first page of memory. When not
	27	* using MMU this corresponds to the first free page in physical memory (aligned
	28	* on a page boundary).
	29	*/
	30	#define PAGE_OFFSET (0xA0000000UL)
	31
	32	#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
	33	#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
	34
	35	#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
	36	#define copy_user_page(vto, vfrom, vaddr, topg) \
	37	memcpy((vto), (vfrom), PAGE_SIZE)
	38
	39	/*
	40	* These are used to make use of C type-checking..
	41	*/
	42
	43	typedef struct { unsigned long pte; } pte_t; /* page table entry */
	44	typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */
	45	typedef struct { unsigned long pgprot; } pgprot_t;
	46	typedef struct page *pgtable_t;
	47
	48	#define pte_val(x) ((x).pte)
	49	#define pgd_val(x) ((x).pgd)
	50	#define pgprot_val(x) ((x).pgprot)
	51
	52	#define __pte(x) ((pte_t) { (x) })
	53	#define __pgd(x) ((pgd_t) { (x) })
	54	#define __pgprot(x) ((pgprot_t) { (x) })
	55
	56	extern unsigned long max_low_pfn;
	57	extern unsigned long min_low_pfn;
	58	extern unsigned long max_pfn;
	59
ffa818b4 CL	60	#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
ffa818b4 CL	61	#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
6bc9a396 CL	62
	63	#define phys_to_pfn(phys) (PFN_DOWN(phys))
	64	#define pfn_to_phys(pfn) (PFN_PHYS(pfn))
	65
	66	#define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr))))
	67	#define pfn_to_virt(pfn) __va(pfn_to_phys((pfn)))
	68
	69	#define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr)))
	70	#define page_to_virt(page) (pfn_to_virt(page_to_pfn(page)))
	71
	72	#define page_to_phys(page) (pfn_to_phys(page_to_pfn(page)))
	73	#define page_to_bus(page) (page_to_phys(page))
	74	#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
	75
	76	#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr)
	77
	78	#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
	79
	80	#endif /* __ASSEMBLY__ */
	81
	82	#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
	83
	84	#endif /* __KERNEL__ */
	85
	86	#define VM_DATA_DEFAULT_FLAGS (VM_READ \| VM_WRITE \| VM_EXEC \| \
	87	VM_MAYREAD \| VM_MAYWRITE \| VM_MAYEXEC)
	88
	89	#include <asm-generic/memory_model.h>
	90	#include <asm-generic/getorder.h>
	91
	92	#endif /* _ASM_SCORE_PAGE_H */