4 #include <linux/config.h>
6 /* PAGE_SHIFT determines the page size */
8 #define PAGE_SHIFT (12)
9 #define PAGE_SIZE (1UL << PAGE_SHIFT)
10 #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)
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
31 * These are used to make use of C type-checking..
33 typedef struct { unsigned long pte
; } pte_t
;
34 typedef struct { unsigned long pmd
[16]; } pmd_t
;
35 typedef struct { unsigned long pgd
; } pgd_t
;
36 typedef struct { unsigned long pgprot
; } pgprot_t
;
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)
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) } )
48 /* to align the pointer to the (next) page boundary */
49 #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
51 extern unsigned long memory_start
;
52 extern unsigned long memory_end
;
54 #endif /* !__ASSEMBLY__ */
56 #include <asm/page_offset.h>
58 #define PAGE_OFFSET (PAGE_OFFSET_RAW)
62 #define __pa(vaddr) virt_to_phys(vaddr)
63 #define __va(paddr) phys_to_virt((unsigned long)paddr)
65 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
66 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
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)
72 #define pfn_valid(page) (page < max_mapnr)
74 #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
76 #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
77 ((void *)(kaddr) < (void *)memory_end))
79 #endif /* __ASSEMBLY__ */
81 #endif /* __KERNEL__ */
83 #include <asm-generic/memory_model.h>
84 #include <asm-generic/page.h>
86 #endif /* _H8300_PAGE_H */