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1da177e4 LT |
1 | #ifndef _ASM_M32R_PGALLOC_H |
2 | #define _ASM_M32R_PGALLOC_H | |
3 | ||
4 | /* $Id$ */ | |
5 | ||
6 | #include <linux/config.h> | |
7 | #include <linux/mm.h> | |
8 | ||
9 | #include <asm/io.h> | |
10 | ||
11 | #define pmd_populate_kernel(mm, pmd, pte) \ | |
12 | set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) | |
13 | ||
14 | static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd, | |
15 | struct page *pte) | |
16 | { | |
17 | set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte))); | |
18 | } | |
19 | ||
20 | /* | |
21 | * Allocate and free page tables. | |
22 | */ | |
23 | static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm) | |
24 | { | |
25 | pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); | |
26 | ||
27 | return pgd; | |
28 | } | |
29 | ||
30 | static __inline__ void pgd_free(pgd_t *pgd) | |
31 | { | |
32 | free_page((unsigned long)pgd); | |
33 | } | |
34 | ||
35 | static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, | |
36 | unsigned long address) | |
37 | { | |
38 | pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); | |
39 | ||
40 | return pte; | |
41 | } | |
42 | ||
43 | static __inline__ struct page *pte_alloc_one(struct mm_struct *mm, | |
44 | unsigned long address) | |
45 | { | |
46 | struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO); | |
47 | ||
48 | ||
49 | return pte; | |
50 | } | |
51 | ||
52 | static __inline__ void pte_free_kernel(pte_t *pte) | |
53 | { | |
54 | free_page((unsigned long)pte); | |
55 | } | |
56 | ||
57 | static __inline__ void pte_free(struct page *pte) | |
58 | { | |
59 | __free_page(pte); | |
60 | } | |
61 | ||
62 | #define __pte_free_tlb(tlb, pte) pte_free((pte)) | |
63 | ||
64 | /* | |
65 | * allocating and freeing a pmd is trivial: the 1-entry pmd is | |
66 | * inside the pgd, so has no extra memory associated with it. | |
67 | * (In the PAE case we free the pmds as part of the pgd.) | |
68 | */ | |
69 | ||
70 | #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) | |
71 | #define pmd_free(x) do { } while (0) | |
72 | #define __pmd_free_tlb(tlb, x) do { } while (0) | |
73 | #define pgd_populate(mm, pmd, pte) BUG() | |
74 | ||
75 | #define check_pgt_cache() do { } while (0) | |
76 | ||
77 | #endif /* _ASM_M32R_PGALLOC_H */ | |
78 |