Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | ||
1da177e4 LT |
10 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) |
11 | { | |
12 | pte_t *pte; | |
13 | ||
32d6bd90 | 14 | pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); |
1da177e4 LT |
15 | if (pte) { |
16 | __flush_page_to_ram(pte); | |
17 | flush_tlb_kernel_page(pte); | |
18 | nocache_page(pte); | |
19 | } | |
20 | ||
21 | return pte; | |
22 | } | |
23 | ||
5e541973 | 24 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
1da177e4 LT |
25 | { |
26 | cache_page(pte); | |
27 | free_page((unsigned long) pte); | |
28 | } | |
29 | ||
2f569afd | 30 | static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) |
1da177e4 | 31 | { |
f84c914b | 32 | struct page *page; |
1da177e4 LT |
33 | pte_t *pte; |
34 | ||
32d6bd90 | 35 | page = alloc_pages(GFP_KERNEL|__GFP_ZERO, 0); |
1da177e4 LT |
36 | if(!page) |
37 | return NULL; | |
f84c914b KS |
38 | if (!pgtable_page_ctor(page)) { |
39 | __free_page(page); | |
40 | return NULL; | |
41 | } | |
1da177e4 LT |
42 | |
43 | pte = kmap(page); | |
dc71c7d5 AM |
44 | __flush_page_to_ram(pte); |
45 | flush_tlb_kernel_page(pte); | |
46 | nocache_page(pte); | |
47 | kunmap(page); | |
1da177e4 LT |
48 | return page; |
49 | } | |
50 | ||
2f569afd | 51 | static inline void pte_free(struct mm_struct *mm, pgtable_t page) |
1da177e4 | 52 | { |
2f569afd | 53 | pgtable_page_dtor(page); |
1da177e4 LT |
54 | cache_page(kmap(page)); |
55 | kunmap(page); | |
56 | __free_page(page); | |
57 | } | |
58 | ||
9e1b32ca BH |
59 | static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page, |
60 | unsigned long address) | |
1da177e4 | 61 | { |
2f569afd | 62 | pgtable_page_dtor(page); |
1da177e4 LT |
63 | cache_page(kmap(page)); |
64 | kunmap(page); | |
65 | __free_page(page); | |
66 | } | |
67 | ||
68 | ||
69 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) | |
70 | { | |
71 | return get_pointer_table(); | |
72 | } | |
73 | ||
5e541973 | 74 | static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd) |
1da177e4 LT |
75 | { |
76 | return free_pointer_table(pmd); | |
77 | } | |
78 | ||
9e1b32ca BH |
79 | static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, |
80 | unsigned long address) | |
1da177e4 LT |
81 | { |
82 | return free_pointer_table(pmd); | |
83 | } | |
84 | ||
85 | ||
5e541973 | 86 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) |
1da177e4 | 87 | { |
5e541973 | 88 | pmd_free(mm, (pmd_t *)pgd); |
1da177e4 LT |
89 | } |
90 | ||
91 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) | |
92 | { | |
93 | return (pgd_t *)get_pointer_table(); | |
94 | } | |
95 | ||
96 | ||
97 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) | |
98 | { | |
99 | pmd_set(pmd, pte); | |
100 | } | |
101 | ||
2f569afd | 102 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) |
1da177e4 LT |
103 | { |
104 | pmd_set(pmd, page_address(page)); | |
105 | } | |
2f569afd | 106 | #define pmd_pgtable(pmd) pmd_page(pmd) |
1da177e4 LT |
107 | |
108 | static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) | |
109 | { | |
110 | pgd_set(pgd, pmd); | |
111 | } | |
112 | ||
113 | #endif /* _MOTOROLA_PGALLOC_H */ |