4 /* PAGE_SHIFT determines the page size */
6 #define PAGE_SHIFT (12)
7 #define PAGE_SIZE (1UL << PAGE_SHIFT)
8 #define PAGE_MASK (~(PAGE_SIZE-1))
10 #include <asm/setup.h>
14 #define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
15 #define free_user_page(page, addr) free_page(addr)
17 #define clear_page(page) memset((page), 0, PAGE_SIZE)
18 #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
20 #define clear_user_page(page, vaddr, pg) clear_page(page)
21 #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
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
28 * These are used to make use of C type-checking..
30 typedef struct { unsigned long pte; } pte_t;
31 typedef struct { unsigned long pmd[16]; } pmd_t;
32 typedef struct { unsigned long pgd; } pgd_t;
33 typedef struct { unsigned long pgprot; } pgprot_t;
34 typedef struct page *pgtable_t;
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)
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) } )
46 extern unsigned long memory_start;
47 extern unsigned long memory_end;
49 #endif /* !__ASSEMBLY__ */
51 #include <asm/page_offset.h>
53 #define PAGE_OFFSET (PAGE_OFFSET_RAW)
57 #define __pa(vaddr) virt_to_phys(vaddr)
58 #define __va(paddr) phys_to_virt((unsigned long)paddr)
60 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
61 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
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)
68 #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
70 #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
71 ((void *)(kaddr) < (void *)memory_end))
73 #endif /* __ASSEMBLY__ */
75 #include <asm-generic/memory_model.h>
76 #include <asm-generic/page.h>
78 #endif /* _H8300_PAGE_H */