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;
33 pte_t *pte;
34
35 page = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
36 if(!page)
37 return NULL;
38 if (!pgtable_page_ctor(page)) {
39 __free_page(page);
40 return NULL;
41 }
42
43 pte = kmap(page);
44 __flush_page_to_ram(pte);
45 flush_tlb_kernel_page(pte);
46 nocache_page(pte);
47 kunmap(page);
48 return page;
49 }
50
pte_free(struct mm_struct * mm,pgtable_t page)51 static inline void pte_free(struct mm_struct *mm, pgtable_t page)
52 {
53 pgtable_page_dtor(page);
54 cache_page(kmap(page));
55 kunmap(page);
56 __free_page(page);
57 }
58
__pte_free_tlb(struct mmu_gather * tlb,pgtable_t page,unsigned long address)59 static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,
60 unsigned long address)
61 {
62 pgtable_page_dtor(page);
63 cache_page(kmap(page));
64 kunmap(page);
65 __free_page(page);
66 }
67
68
pmd_alloc_one(struct mm_struct * mm,unsigned long address)69 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
70 {
71 return get_pointer_table();
72 }
73
pmd_free(struct mm_struct * mm,pmd_t * pmd)74 static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
75 {
76 return free_pointer_table(pmd);
77 }
78
__pmd_free_tlb(struct mmu_gather * tlb,pmd_t * pmd,unsigned long address)79 static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
80 unsigned long address)
81 {
82 return free_pointer_table(pmd);
83 }
84
85
pgd_free(struct mm_struct * mm,pgd_t * pgd)86 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
87 {
88 pmd_free(mm, (pmd_t *)pgd);
89 }
90
pgd_alloc(struct mm_struct * mm)91 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
92 {
93 return (pgd_t *)get_pointer_table();
94 }
95
96
pmd_populate_kernel(struct mm_struct * mm,pmd_t * pmd,pte_t * pte)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
pmd_populate(struct mm_struct * mm,pmd_t * pmd,pgtable_t page)102 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
103 {
104 pmd_set(pmd, page_address(page));
105 }
106 #define pmd_pgtable(pmd) pmd_page(pmd)
107
pgd_populate(struct mm_struct * mm,pgd_t * pgd,pmd_t * pmd)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 */
114