[linux-block.git] / include / asm-v850 / page.h

/*
 * include/asm-v850/page.h -- VM ops
 *
 *  Copyright (C) 2001,02,03,05  NEC Electronics Corporation
 *  Copyright (C) 2001,02,03,05  Miles Bader <miles@gnu.org>
 *
 * 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.
 *
 * Written by Miles Bader <miles@gnu.org>
 */

#ifndef __V850_PAGE_H__
#define __V850_PAGE_H__

#ifdef __KERNEL__

#include <asm/machdep.h>


#define PAGE_SHIFT	12
#define PAGE_SIZE       (1UL << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))


/*
 * PAGE_OFFSET -- the first address of the first page of memory. For archs with
 * no MMU this corresponds to the first free page in physical memory (aligned
 * on a page boundary).
 */
#ifndef PAGE_OFFSET
#define PAGE_OFFSET  0x0000000
#endif


#ifndef __ASSEMBLY__

#define STRICT_MM_TYPECHECKS

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

#define clear_user_page(addr, vaddr, page)	\
	do { 	clear_page(addr);		\
		flush_dcache_page(page);	\
	} while (0)
#define copy_user_page(to, from, vaddr, page)	\
	do {	copy_page(to, from);		\
		flush_dcache_page(page);	\
	} while (0)

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

typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd; } pmd_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;

#define pte_val(x)      ((x).pte)
#define pmd_val(x)      ((x).pmd)
#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) } )

#else /* !STRICT_MM_TYPECHECKS */
/*
 * .. while these make it easier on the compiler
 */

typedef unsigned long pte_t;
typedef unsigned long pmd_t;
typedef unsigned long pgd_t;
typedef unsigned long pgprot_t;

#define pte_val(x)      (x)
#define pmd_val(x)      (x)
#define pgd_val(x)      (x)
#define pgprot_val(x)   (x)

#define __pte(x)        (x)
#define __pmd(x)        (x)
#define __pgd(x)        (x)
#define __pgprot(x)     (x)

#endif /* STRICT_MM_TYPECHECKS */

#endif /* !__ASSEMBLY__ */


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


/* No current v850 processor has virtual memory.  */
#define __virt_to_phys(addr)	(addr)
#define __phys_to_virt(addr)	(addr)

#define virt_to_pfn(kaddr)	(__virt_to_phys (kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn)	__phys_to_virt ((pfn) << PAGE_SHIFT)

#define MAP_NR(kaddr) \
  (((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT)
#define virt_to_page(kaddr)	(mem_map + MAP_NR (kaddr))
#define page_to_virt(page) \
  ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)

#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
#define pfn_valid(pfn)	        ((pfn) < max_mapnr)

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


#define __pa(x)		     __virt_to_phys ((unsigned long)(x))
#define __va(x)		     ((void *)__phys_to_virt ((unsigned long)(x)))


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

#endif /* KERNEL */

#endif /* __V850_PAGE_H__ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/asm-v850/page.h -- VM ops
	3	*
e9c3d6b9 MB	4	* Copyright (C) 2001,02,03,05 NEC Electronics Corporation
e9c3d6b9 MB	5	* Copyright (C) 2001,02,03,05 Miles Bader <miles@gnu.org>
1da177e4 LT	6	*
	7	* This file is subject to the terms and conditions of the GNU General
	8	* Public License. See the file COPYING in the main directory of this
	9	* archive for more details.
	10	*
	11	* Written by Miles Bader <miles@gnu.org>
	12	*/
	13
	14	#ifndef __V850_PAGE_H__
	15	#define __V850_PAGE_H__
	16
2a1b181e DW	17	#ifdef __KERNEL__
2a1b181e DW	18
1da177e4 LT	19	#include <asm/machdep.h>
	20
	21
	22	#define PAGE_SHIFT 12
	23	#define PAGE_SIZE (1UL << PAGE_SHIFT)
	24	#define PAGE_MASK (~(PAGE_SIZE-1))
	25
	26
	27	/*
	28	* PAGE_OFFSET -- the first address of the first page of memory. For archs with
	29	* no MMU this corresponds to the first free page in physical memory (aligned
	30	* on a page boundary).
	31	*/
	32	#ifndef PAGE_OFFSET
	33	#define PAGE_OFFSET 0x0000000
	34	#endif
	35
	36
1da177e4 LT	37	#ifndef __ASSEMBLY__
	38
	39	#define STRICT_MM_TYPECHECKS
	40
	41	#define clear_page(page) memset ((void *)(page), 0, PAGE_SIZE)
	42	#define copy_page(to, from) memcpy ((void )(to), (void )from, PAGE_SIZE)
	43
	44	#define clear_user_page(addr, vaddr, page) \
	45	do { clear_page(addr); \
	46	flush_dcache_page(page); \
	47	} while (0)
	48	#define copy_user_page(to, from, vaddr, page) \
	49	do { copy_page(to, from); \
	50	flush_dcache_page(page); \
	51	} while (0)
	52
	53	#ifdef STRICT_MM_TYPECHECKS
	54	/*
	55	* These are used to make use of C type-checking..
	56	*/
	57
	58	typedef struct { unsigned long pte; } pte_t;
	59	typedef struct { unsigned long pmd; } pmd_t;
	60	typedef struct { unsigned long pgd; } pgd_t;
	61	typedef struct { unsigned long pgprot; } pgprot_t;
	62
	63	#define pte_val(x) ((x).pte)
	64	#define pmd_val(x) ((x).pmd)
	65	#define pgd_val(x) ((x).pgd)
	66	#define pgprot_val(x) ((x).pgprot)
	67
	68	#define __pte(x) ((pte_t) { (x) } )
	69	#define __pmd(x) ((pmd_t) { (x) } )
	70	#define __pgd(x) ((pgd_t) { (x) } )
	71	#define __pgprot(x) ((pgprot_t) { (x) } )
	72
	73	#else /* !STRICT_MM_TYPECHECKS */
	74	/*
	75	* .. while these make it easier on the compiler
	76	*/
	77
	78	typedef unsigned long pte_t;
	79	typedef unsigned long pmd_t;
	80	typedef unsigned long pgd_t;
	81	typedef unsigned long pgprot_t;
	82
	83	#define pte_val(x) (x)
	84	#define pmd_val(x) (x)
	85	#define pgd_val(x) (x)
	86	#define pgprot_val(x) (x)
	87
	88	#define __pte(x) (x)
	89	#define __pmd(x) (x)
	90	#define __pgd(x) (x)
	91	#define __pgprot(x) (x)
	92
	93	#endif /* STRICT_MM_TYPECHECKS */
	94
	95	#endif /* !__ASSEMBLY__ */
	96
	97
	98	/* to align the pointer to the (next) page boundary */
	99	#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
	100
101
1da177e4 LT	102	/* No current v850 processor has virtual memory. */
	103	#define __virt_to_phys(addr) (addr)
	104	#define __phys_to_virt(addr) (addr)
	105
	106	#define virt_to_pfn(kaddr) (__virt_to_phys (kaddr) >> PAGE_SHIFT)
	107	#define pfn_to_virt(pfn) __phys_to_virt ((pfn) << PAGE_SHIFT)
	108
	109	#define MAP_NR(kaddr) \
	110	(((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT)
	111	#define virt_to_page(kaddr) (mem_map + MAP_NR (kaddr))
	112	#define page_to_virt(page) \
	113	((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
	114
e6009f1b	115	#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
e9c3d6b9	116	#define pfn_valid(pfn) ((pfn) < max_mapnr)
1da177e4 LT	117
	118	#define virt_addr_valid(kaddr) \
	119	(((void )(kaddr) >= (void )PAGE_OFFSET) && MAP_NR (kaddr) < max_mapnr)
	120
	121
	122	#define __pa(x) __virt_to_phys ((unsigned long)(x))
	123	#define __va(x) ((void *)__phys_to_virt ((unsigned long)(x)))
	124
	125
e6009f1b	126	#include <asm-generic/memory_model.h>
fd4fd5aa SR	127	#include <asm-generic/page.h>
fd4fd5aa SR	128
2a1b181e DW	129	#endif /* KERNEL */
2a1b181e DW	130
1da177e4	131	#endif /* __V850_PAGE_H__ */