projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _M68KNOMMU_PAGE_H |
| 2 | #define _M68KNOMMU_PAGE_H | |
| 3 | ||
| 4 | #include <linux/config.h> | |
| 5 | ||
| 6 | /* PAGE_SHIFT determines the page size */ | |
| 7 | ||
| 8 | #define PAGE_SHIFT (12) | |
| 9 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
| 10 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
| 11 | ||
| 12 | #ifdef __KERNEL__ | |
| 13 | ||
| 14 | #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 | #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr) | |
| 28 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE | |
| 29 | ||
| 30 | /* | |
| 31 | * These are used to make use of C type-checking.. | |
| 32 | */ | |
| 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; | |
| 37 | ||
| 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) | |
| 42 | ||
| 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) } ) | |
| 47 | ||
| 48 | /* to align the pointer to the (next) page boundary */ | |
| 49 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
| 50 | ||
| 51 | /* Pure 2^n version of get_order */ | |
| 52 | extern __inline__ int get_order(unsigned long size) | |
| 53 | { | |
| 54 | int order; | |
| 55 | ||
| 56 | size = (size-1) >> (PAGE_SHIFT-1); | |
| 57 | order = -1; | |
| 58 | do { | |
| 59 | size >>= 1; | |
| 60 | order++; | |
| 61 | } while (size); | |
| 62 | return order; | |
| 63 | } | |
| 64 | ||
| 65 | extern unsigned long memory_start; | |
| 66 | extern unsigned long memory_end; | |
| 67 | ||
| 68 | #endif /* !__ASSEMBLY__ */ | |
| 69 | ||
| 70 | #include <asm/page_offset.h> | |
| 71 | ||
| 72 | #define PAGE_OFFSET (PAGE_OFFSET_RAW) | |
| 73 | ||
| 74 | #ifndef __ASSEMBLY__ | |
| 75 | ||
| 76 | #define __pa(vaddr) virt_to_phys((void *)vaddr) | |
| 77 | #define __va(paddr) phys_to_virt((unsigned long)paddr) | |
| 78 | ||
| 79 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | |
| 80 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | |
| 81 | ||
| 82 | #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | |
| 83 | #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) | |
| 84 | ||
| 85 | #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) | |
| 86 | #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) | |
| 87 | ||
| 88 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | |
| 89 | ((void *)(kaddr) < (void *)memory_end)) | |
| 90 | ||
| 91 | #endif /* __ASSEMBLY__ */ | |
| 92 | ||
| 93 | #endif /* __KERNEL__ */ | |
| 94 | ||
| 95 | #endif /* _M68KNOMMU_PAGE_H */ |