[deliverable/linux.git] / include / asm-blackfin / page.h

#ifndef _BLACKFIN_PAGE_H
#define _BLACKFIN_PAGE_H

/* PAGE_SHIFT determines the page size */

#define PAGE_SHIFT	12
#ifdef __ASSEMBLY__
#define PAGE_SIZE	(1 << PAGE_SHIFT)
#else
#define PAGE_SIZE	(1UL << PAGE_SHIFT)
#endif
#define PAGE_MASK	(~(PAGE_SIZE-1))

#include <asm/setup.h>

#ifndef __ASSEMBLY__

#define get_user_page(vaddr)		__get_free_page(GFP_KERNEL)
#define free_user_page(page, addr)	free_page(addr)

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

#define clear_user_page(page, vaddr,pg)	clear_page(page)
#define copy_user_page(to, from, vaddr,pg)	copy_page(to, from)

/*
 * These are used to make use of C type-checking..
 */
typedef struct {
	unsigned long pte;
} pte_t;
typedef struct {
	unsigned long pmd[16];
} pmd_t;
typedef struct {
	unsigned long pgd;
} pgd_t;
typedef struct {
	unsigned long pgprot;
} pgprot_t;
typedef struct page *pgtable_t;

#define pte_val(x)	((x).pte)
#define pmd_val(x)	((&x)->pmd[0])
#define pgd_val(x)	((x).pgd)
#define pgprot_val(x)	((x).pgprot)

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

/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)

extern unsigned long memory_start;
extern unsigned long memory_end;

#endif				/* !__ASSEMBLY__ */

#include <asm/page_offset.h>
#include <asm/io.h>

#define PAGE_OFFSET		(PAGE_OFFSET_RAW)

#ifndef __ASSEMBLY__

#define __pa(vaddr)		virt_to_phys((void *)(vaddr))
#define __va(paddr)		phys_to_virt((unsigned long)(paddr))

#define MAP_NR(addr)		(((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)

#define virt_to_pfn(kaddr)	(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn)	__va((pfn) << PAGE_SHIFT)
#define virt_to_page(addr)	(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define page_to_virt(page)	((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define VALID_PAGE(page)	((page - mem_map) < max_mapnr)

#define pfn_to_page(pfn)	virt_to_page(pfn_to_virt(pfn))
#define page_to_pfn(page)	virt_to_pfn(page_to_virt(page))
#define pfn_valid(pfn)	        ((pfn) < max_mapnr)

#define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
				((void *)(kaddr) < (void *)memory_end))

#include <asm-generic/page.h>

#endif				/* __ASSEMBLY__ */

#endif				/* _BLACKFIN_PAGE_H */
Commit	Line	Data
1394f032 BW	1	#ifndef _BLACKFIN_PAGE_H
	2	#define _BLACKFIN_PAGE_H
	3
	4	/* PAGE_SHIFT determines the page size */
	5
	6	#define PAGE_SHIFT 12
520473b0 MF	7	#ifdef __ASSEMBLY__
	8	#define PAGE_SIZE (1 << PAGE_SHIFT)
	9	#else
1394f032	10	#define PAGE_SIZE (1UL << PAGE_SHIFT)
520473b0	11	#endif
1394f032 BW	12	#define PAGE_MASK (~(PAGE_SIZE-1))
1394f032 BW	13
1394f032 BW	14	#include <asm/setup.h>
	15
	16	#ifndef __ASSEMBLY__
	17
	18	#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
	19	#define free_user_page(page, addr) free_page(addr)
	20
	21	#define clear_page(page) memset((page), 0, PAGE_SIZE)
	22	#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
	23
	24	#define clear_user_page(page, vaddr,pg) clear_page(page)
	25	#define copy_user_page(to, from, vaddr,pg) copy_page(to, from)
	26
	27	/*
	28	* These are used to make use of C type-checking..
	29	*/
	30	typedef struct {
	31	unsigned long pte;
	32	} pte_t;
	33	typedef struct {
	34	unsigned long pmd[16];
	35	} pmd_t;
	36	typedef struct {
	37	unsigned long pgd;
	38	} pgd_t;
	39	typedef struct {
	40	unsigned long pgprot;
	41	} pgprot_t;
257ce734	42	typedef struct page *pgtable_t;
1394f032 BW	43
	44	#define pte_val(x) ((x).pte)
	45	#define pmd_val(x) ((&x)->pmd[0])
	46	#define pgd_val(x) ((x).pgd)
	47	#define pgprot_val(x) ((x).pgprot)
	48
	49	#define __pte(x) ((pte_t) { (x) } )
	50	#define __pmd(x) ((pmd_t) { (x) } )
	51	#define __pgd(x) ((pgd_t) { (x) } )
	52	#define __pgprot(x) ((pgprot_t) { (x) } )
	53
	54	/* to align the pointer to the (next) page boundary */
	55	#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
	56
	57	extern unsigned long memory_start;
	58	extern unsigned long memory_end;
	59
	60	#endif /* !__ASSEMBLY__ */
	61
	62	#include <asm/page_offset.h>
	63	#include <asm/io.h>
	64
	65	#define PAGE_OFFSET (PAGE_OFFSET_RAW)
	66
	67	#ifndef __ASSEMBLY__
	68
	69	#define __pa(vaddr) virt_to_phys((void *)(vaddr))
	70	#define __va(paddr) phys_to_virt((unsigned long)(paddr))
	71
	72	#define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
	73
	74	#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
	75	#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
	76	#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
	77	#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
	78	#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
	79
	80	#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
	81	#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
	82	#define pfn_valid(pfn) ((pfn) < max_mapnr)
	83
	84	#define virt_addr_valid(kaddr) (((void )(kaddr) >= (void )PAGE_OFFSET) && \
	85	((void )(kaddr) < (void )memory_end))
	86
	87	#include <asm-generic/page.h>
	88
	89	#endif /* __ASSEMBLY__ */
1394f032 BW	90
1394f032 BW	91	#endif /* _BLACKFIN_PAGE_H */