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Bryan Wu1394f032007-05-06 14:50:22 -07001#ifndef _BLACKFIN_PAGE_H
2#define _BLACKFIN_PAGE_H
3
4/* PAGE_SHIFT determines the page size */
5
6#define PAGE_SHIFT 12
Mike Frysinger520473b2007-07-12 12:20:20 +08007#ifdef __ASSEMBLY__
8#define PAGE_SIZE (1 << PAGE_SHIFT)
9#else
Bryan Wu1394f032007-05-06 14:50:22 -070010#define PAGE_SIZE (1UL << PAGE_SHIFT)
Mike Frysinger520473b2007-07-12 12:20:20 +080011#endif
Bryan Wu1394f032007-05-06 14:50:22 -070012#define PAGE_MASK (~(PAGE_SIZE-1))
13
Bryan Wu1394f032007-05-06 14:50:22 -070014#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 */
30typedef struct {
31 unsigned long pte;
32} pte_t;
33typedef struct {
34 unsigned long pmd[16];
35} pmd_t;
36typedef struct {
37 unsigned long pgd;
38} pgd_t;
39typedef struct {
40 unsigned long pgprot;
41} pgprot_t;
Martin Schwidefsky257ce732008-02-09 03:13:00 -080042typedef struct page *pgtable_t;
Bryan Wu1394f032007-05-06 14:50:22 -070043
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
57extern unsigned long memory_start;
58extern 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__ */
Bryan Wu1394f032007-05-06 14:50:22 -070090
91#endif /* _BLACKFIN_PAGE_H */