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