blob: 6472c9f88227182ddaf2e914dc14fdfcefd64c50 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _H8300_PAGE_H
2#define _H8300_PAGE_H
3
4#include <linux/config.h>
5
6/* PAGE_SHIFT determines the page size */
7
8#define PAGE_SHIFT (12)
9#define PAGE_SIZE (1UL << PAGE_SHIFT)
10#define PAGE_MASK (~(PAGE_SIZE-1))
11
12#ifdef __KERNEL__
13
14#include <asm/setup.h>
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#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#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
28#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
29
30/*
31 * These are used to make use of C type-checking..
32 */
33typedef struct { unsigned long pte; } pte_t;
34typedef struct { unsigned long pmd[16]; } pmd_t;
35typedef struct { unsigned long pgd; } pgd_t;
36typedef struct { unsigned long pgprot; } pgprot_t;
37
38#define pte_val(x) ((x).pte)
39#define pmd_val(x) ((&x)->pmd[0])
40#define pgd_val(x) ((x).pgd)
41#define pgprot_val(x) ((x).pgprot)
42
43#define __pte(x) ((pte_t) { (x) } )
44#define __pmd(x) ((pmd_t) { (x) } )
45#define __pgd(x) ((pgd_t) { (x) } )
46#define __pgprot(x) ((pgprot_t) { (x) } )
47
48/* to align the pointer to the (next) page boundary */
49#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
50
Linus Torvalds1da177e2005-04-16 15:20:36 -070051extern unsigned long memory_start;
52extern unsigned long memory_end;
53
54#endif /* !__ASSEMBLY__ */
55
56#include <asm/page_offset.h>
57
58#define PAGE_OFFSET (PAGE_OFFSET_RAW)
59
60#ifndef __ASSEMBLY__
61
Yoshinori Sato74ad74c2005-04-16 15:25:21 -070062#define __pa(vaddr) virt_to_phys(vaddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063#define __va(paddr) phys_to_virt((unsigned long)paddr)
64
65#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
66#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
67
68#define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
69#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
70#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
71#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
Yoshinori Sato74ad74c2005-04-16 15:25:21 -070072#define pfn_valid(page) (page < max_mapnr)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
KAMEZAWA Hiroyukidd6cc762006-03-27 01:15:41 -080074#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
76#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
77 ((void *)(kaddr) < (void *)memory_end))
78
79#endif /* __ASSEMBLY__ */
80
81#endif /* __KERNEL__ */
82
KAMEZAWA Hiroyukidd6cc762006-03-27 01:15:41 -080083#include <asm-generic/memory_model.h>
Stephen Rothwellfd4fd5a2005-09-03 15:54:30 -070084#include <asm-generic/page.h>
85
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#endif /* _H8300_PAGE_H */