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1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle | |
7 | * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. | |
8 | */ | |
9 | ||
10 | #ifndef _ASM_NIOS2_PGALLOC_H | |
11 | #define _ASM_NIOS2_PGALLOC_H | |
12 | ||
13 | #include <linux/mm.h> | |
14 | ||
15 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, | |
16 | pte_t *pte) | |
17 | { | |
18 | set_pmd(pmd, __pmd((unsigned long)pte)); | |
19 | } | |
20 | ||
21 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, | |
22 | pgtable_t pte) | |
23 | { | |
24 | set_pmd(pmd, __pmd((unsigned long)page_address(pte))); | |
25 | } | |
26 | #define pmd_pgtable(pmd) pmd_page(pmd) | |
27 | ||
28 | /* | |
29 | * Initialize a new pmd table with invalid pointers. | |
30 | */ | |
31 | extern void pmd_init(unsigned long page, unsigned long pagetable); | |
32 | ||
33 | extern pgd_t *pgd_alloc(struct mm_struct *mm); | |
34 | ||
35 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) | |
36 | { | |
37 | free_pages((unsigned long)pgd, PGD_ORDER); | |
38 | } | |
39 | ||
40 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, | |
41 | unsigned long address) | |
42 | { | |
43 | pte_t *pte; | |
44 | ||
565299d0 | 45 | pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_ZERO, PTE_ORDER); |
cbd15b3f LFT |
46 | |
47 | return pte; | |
48 | } | |
49 | ||
50 | static inline pgtable_t pte_alloc_one(struct mm_struct *mm, | |
51 | unsigned long address) | |
52 | { | |
53 | struct page *pte; | |
54 | ||
565299d0 | 55 | pte = alloc_pages(GFP_KERNEL, PTE_ORDER); |
cbd15b3f LFT |
56 | if (pte) { |
57 | if (!pgtable_page_ctor(pte)) { | |
58 | __free_page(pte); | |
59 | return NULL; | |
60 | } | |
61 | clear_highpage(pte); | |
62 | } | |
63 | return pte; | |
64 | } | |
65 | ||
66 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) | |
67 | { | |
68 | free_pages((unsigned long)pte, PTE_ORDER); | |
69 | } | |
70 | ||
71 | static inline void pte_free(struct mm_struct *mm, struct page *pte) | |
72 | { | |
73 | pgtable_page_dtor(pte); | |
74 | __free_pages(pte, PTE_ORDER); | |
75 | } | |
76 | ||
77 | #define __pte_free_tlb(tlb, pte, addr) \ | |
78 | do { \ | |
79 | pgtable_page_dtor(pte); \ | |
80 | tlb_remove_page((tlb), (pte)); \ | |
81 | } while (0) | |
82 | ||
83 | #define check_pgt_cache() do { } while (0) | |
84 | ||
85 | #endif /* _ASM_NIOS2_PGALLOC_H */ |