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1da177e4 LT |
1 | #ifndef _ASM_M32R_PGALLOC_H |
2 | #define _ASM_M32R_PGALLOC_H | |
3 | ||
4 | /* $Id$ */ | |
5 | ||
1da177e4 LT |
6 | #include <linux/mm.h> |
7 | ||
8 | #include <asm/io.h> | |
9 | ||
10 | #define pmd_populate_kernel(mm, pmd, pte) \ | |
11 | set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) | |
12 | ||
13 | static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd, | |
14 | struct page *pte) | |
15 | { | |
16 | set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte))); | |
17 | } | |
18 | ||
19 | /* | |
20 | * Allocate and free page tables. | |
21 | */ | |
22 | static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm) | |
23 | { | |
24 | pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); | |
25 | ||
26 | return pgd; | |
27 | } | |
28 | ||
29 | static __inline__ void pgd_free(pgd_t *pgd) | |
30 | { | |
31 | free_page((unsigned long)pgd); | |
32 | } | |
33 | ||
34 | static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, | |
35 | unsigned long address) | |
36 | { | |
37 | pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); | |
38 | ||
39 | return pte; | |
40 | } | |
41 | ||
42 | static __inline__ struct page *pte_alloc_one(struct mm_struct *mm, | |
43 | unsigned long address) | |
44 | { | |
45 | struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO); | |
46 | ||
47 | ||
48 | return pte; | |
49 | } | |
50 | ||
51 | static __inline__ void pte_free_kernel(pte_t *pte) | |
52 | { | |
53 | free_page((unsigned long)pte); | |
54 | } | |
55 | ||
56 | static __inline__ void pte_free(struct page *pte) | |
57 | { | |
58 | __free_page(pte); | |
59 | } | |
60 | ||
61 | #define __pte_free_tlb(tlb, pte) pte_free((pte)) | |
62 | ||
63 | /* | |
64 | * allocating and freeing a pmd is trivial: the 1-entry pmd is | |
65 | * inside the pgd, so has no extra memory associated with it. | |
66 | * (In the PAE case we free the pmds as part of the pgd.) | |
67 | */ | |
68 | ||
69 | #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) | |
70 | #define pmd_free(x) do { } while (0) | |
71 | #define __pmd_free_tlb(tlb, x) do { } while (0) | |
72 | #define pgd_populate(mm, pmd, pte) BUG() | |
73 | ||
74 | #define check_pgt_cache() do { } while (0) | |
75 | ||
76 | #endif /* _ASM_M32R_PGALLOC_H */ | |
77 |