1 #ifndef _BLACKFIN_PAGE_H
2 #define _BLACKFIN_PAGE_H
4 /* PAGE_SHIFT determines the page size */
8 #define PAGE_SIZE (1 << PAGE_SHIFT)
10 #define PAGE_SIZE (1UL << PAGE_SHIFT)
12 #define PAGE_MASK (~(PAGE_SIZE-1))
14 #include <asm/setup.h>
18 #define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
19 #define free_user_page(page, addr) free_page(addr)
21 #define clear_page(page) memset((page), 0, PAGE_SIZE)
22 #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
24 #define clear_user_page(page, vaddr,pg) clear_page(page)
25 #define copy_user_page(to, from, vaddr,pg) copy_page(to, from)
28 * These are used to make use of C type-checking..
34 unsigned long pmd[16];
43 #define pte_val(x) ((x).pte)
44 #define pmd_val(x) ((&x)->pmd[0])
45 #define pgd_val(x) ((x).pgd)
46 #define pgprot_val(x) ((x).pgprot)
48 #define __pte(x) ((pte_t) { (x) } )
49 #define __pmd(x) ((pmd_t) { (x) } )
50 #define __pgd(x) ((pgd_t) { (x) } )
51 #define __pgprot(x) ((pgprot_t) { (x) } )
53 /* to align the pointer to the (next) page boundary */
54 #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
56 extern unsigned long memory_start;
57 extern unsigned long memory_end;
59 #endif /* !__ASSEMBLY__ */
61 #include <asm/page_offset.h>
64 #define PAGE_OFFSET (PAGE_OFFSET_RAW)
68 #define __pa(vaddr) virt_to_phys((void *)(vaddr))
69 #define __va(paddr) phys_to_virt((unsigned long)(paddr))
71 #define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
73 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
74 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
75 #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
76 #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
77 #define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
79 #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
80 #define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
81 #define pfn_valid(pfn) ((pfn) < max_mapnr)
83 #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
84 ((void *)(kaddr) < (void *)memory_end))
86 #include <asm-generic/page.h>
88 #endif /* __ASSEMBLY__ */
90 #endif /* _BLACKFIN_PAGE_H */