fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-m68knommu / page.h
blob9efa0a9851b1ffb26aad17ce1b2a41658731e4ee
1 #ifndef _M68KNOMMU_PAGE_H
2 #define _M68KNOMMU_PAGE_H
4 #ifdef __KERNEL__
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))
12 #include <asm/setup.h>
14 #ifndef __ASSEMBLY__
16 #define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
17 #define free_user_page(page, addr) free_page(addr)
19 #define clear_page(page) memset((page), 0, PAGE_SIZE)
20 #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
22 #define clear_user_page(page, vaddr, pg) clear_page(page)
23 #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
25 #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
26 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
27 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
30 * These are used to make use of C type-checking..
32 typedef struct { unsigned long pte; } pte_t;
33 typedef struct { unsigned long pmd[16]; } pmd_t;
34 typedef struct { unsigned long pgd; } pgd_t;
35 typedef struct { unsigned long pgprot; } pgprot_t;
37 #define pte_val(x) ((x).pte)
38 #define pmd_val(x) ((&x)->pmd[0])
39 #define pgd_val(x) ((x).pgd)
40 #define pgprot_val(x) ((x).pgprot)
42 #define __pte(x) ((pte_t) { (x) } )
43 #define __pmd(x) ((pmd_t) { (x) } )
44 #define __pgd(x) ((pgd_t) { (x) } )
45 #define __pgprot(x) ((pgprot_t) { (x) } )
47 /* to align the pointer to the (next) page boundary */
48 #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
50 extern unsigned long memory_start;
51 extern unsigned long memory_end;
53 #endif /* !__ASSEMBLY__ */
55 #include <asm/page_offset.h>
57 #define PAGE_OFFSET (PAGE_OFFSET_RAW)
59 #ifndef __ASSEMBLY__
61 #define __pa(vaddr) virt_to_phys((void *)(vaddr))
62 #define __va(paddr) phys_to_virt((unsigned long)(paddr))
64 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
65 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
67 #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
68 #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
70 #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
71 #define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
72 #define pfn_valid(pfn) ((pfn) < max_mapnr)
74 #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
75 ((void *)(kaddr) < (void *)memory_end))
77 #endif /* __ASSEMBLY__ */
79 #include <asm-generic/page.h>
81 #endif /* __KERNEL__ */
83 #endif /* _M68KNOMMU_PAGE_H */