| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | #ifndef _MOTOROLA_PGALLOC_H |
| 2 | #define _MOTOROLA_PGALLOC_H |
| 3 | |
| 4 | #include <asm/tlb.h> |
| 5 | #include <asm/tlbflush.h> |
| 6 | |
| 7 | extern pmd_t *get_pointer_table(void); |
| 8 | extern int free_pointer_table(pmd_t *); |
| 9 | |
| 10 | |
| 11 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) |
| 12 | { |
| 13 | pte_t *pte; |
| 14 | |
| 15 | pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO); |
| 16 | if (pte) { |
| 17 | __flush_page_to_ram(pte); |
| 18 | flush_tlb_kernel_page(pte); |
| 19 | nocache_page(pte); |
| 20 | } |
| 21 | |
| 22 | return pte; |
| 23 | } |
| 24 | |
| 25 | static inline void pte_free_kernel(pte_t *pte) |
| 26 | { |
| 27 | cache_page(pte); |
| 28 | free_page((unsigned long) pte); |
| 29 | } |
| 30 | |
| 31 | static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) |
| 32 | { |
| 33 | struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0); |
| 34 | pte_t *pte; |
| 35 | |
| 36 | if(!page) |
| 37 | return NULL; |
| 38 | |
| 39 | pte = kmap(page); |
| 40 | if (pte) { |
| 41 | __flush_page_to_ram(pte); |
| 42 | flush_tlb_kernel_page(pte); |
| 43 | nocache_page(pte); |
| 44 | } |
| 45 | kunmap(pte); |
| 46 | |
| 47 | return page; |
| 48 | } |
| 49 | |
| 50 | static inline void pte_free(struct page *page) |
| 51 | { |
| 52 | cache_page(kmap(page)); |
| 53 | kunmap(page); |
| 54 | __free_page(page); |
| 55 | } |
| 56 | |
| 57 | static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *page) |
| 58 | { |
| 59 | cache_page(kmap(page)); |
| 60 | kunmap(page); |
| 61 | __free_page(page); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) |
| 66 | { |
| 67 | return get_pointer_table(); |
| 68 | } |
| 69 | |
| 70 | static inline int pmd_free(pmd_t *pmd) |
| 71 | { |
| 72 | return free_pointer_table(pmd); |
| 73 | } |
| 74 | |
| 75 | static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) |
| 76 | { |
| 77 | return free_pointer_table(pmd); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | static inline void pgd_free(pgd_t *pgd) |
| 82 | { |
| 83 | pmd_free((pmd_t *)pgd); |
| 84 | } |
| 85 | |
| 86 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
| 87 | { |
| 88 | return (pgd_t *)get_pointer_table(); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) |
| 93 | { |
| 94 | pmd_set(pmd, pte); |
| 95 | } |
| 96 | |
| 97 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page) |
| 98 | { |
| 99 | pmd_set(pmd, page_address(page)); |
| 100 | } |
| 101 | |
| 102 | static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) |
| 103 | { |
| 104 | pgd_set(pgd, pmd); |
| 105 | } |
| 106 | |
| 107 | #endif /* _MOTOROLA_PGALLOC_H */ |