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/arch/h8300/include/asm/page.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 78 lines | 50 code | 24 blank | 4 comment | 1 complexity | 132707e4a7487198bbc07bf01c9b5af2 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1#ifndef _H8300_PAGE_H
 2#define _H8300_PAGE_H
 3
 4/* PAGE_SHIFT determines the page size */
 5
 6#define PAGE_SHIFT	(12)
 7#define PAGE_SIZE	(1UL << PAGE_SHIFT)
 8#define PAGE_MASK	(~(PAGE_SIZE-1))
 9
10#include <asm/setup.h>
11
12#ifndef __ASSEMBLY__
13 
14#define get_user_page(vaddr)		__get_free_page(GFP_KERNEL)
15#define free_user_page(page, addr)	free_page(addr)
16
17#define clear_page(page)	memset((page), 0, PAGE_SIZE)
18#define copy_page(to,from)	memcpy((to), (from), PAGE_SIZE)
19
20#define clear_user_page(page, vaddr, pg)	clear_page(page)
21#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
22
23#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
24	alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
25#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
26
27/*
28 * These are used to make use of C type-checking..
29 */
30typedef struct { unsigned long pte; } pte_t;
31typedef struct { unsigned long pmd[16]; } pmd_t;
32typedef struct { unsigned long pgd; } pgd_t;
33typedef struct { unsigned long pgprot; } pgprot_t;
34typedef struct page *pgtable_t;
35
36#define pte_val(x)	((x).pte)
37#define pmd_val(x)	((&x)->pmd[0])
38#define pgd_val(x)	((x).pgd)
39#define pgprot_val(x)	((x).pgprot)
40
41#define __pte(x)	((pte_t) { (x) } )
42#define __pmd(x)	((pmd_t) { (x) } )
43#define __pgd(x)	((pgd_t) { (x) } )
44#define __pgprot(x)	((pgprot_t) { (x) } )
45
46extern unsigned long memory_start;
47extern unsigned long memory_end;
48
49#endif /* !__ASSEMBLY__ */
50
51#include <asm/page_offset.h>
52
53#define PAGE_OFFSET		(PAGE_OFFSET_RAW)
54
55#ifndef __ASSEMBLY__
56
57#define __pa(vaddr)		virt_to_phys(vaddr)
58#define __va(paddr)		phys_to_virt((unsigned long)paddr)
59
60#define virt_to_pfn(kaddr)	(__pa(kaddr) >> PAGE_SHIFT)
61#define pfn_to_virt(pfn)	__va((pfn) << PAGE_SHIFT)
62
63#define MAP_NR(addr)		(((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
64#define virt_to_page(addr)	(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
65#define page_to_virt(page)	((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
66#define pfn_valid(page)	        (page < max_mapnr)
67
68#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
69
70#define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
71				((void *)(kaddr) < (void *)memory_end))
72
73#endif /* __ASSEMBLY__ */
74
75#include <asm-generic/memory_model.h>
76#include <asm-generic/getorder.h>
77
78#endif /* _H8300_PAGE_H */