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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) | |
3 | * Copyright 2003 PathScale, Inc. | |
4 | * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h | |
5 | * Licensed under the GPL | |
6 | */ | |
7 | ||
8 | #ifndef __UM_PGALLOC_H | |
9 | #define __UM_PGALLOC_H | |
10 | ||
11 | #include "linux/config.h" | |
12 | #include "linux/mm.h" | |
13 | #include "asm/fixmap.h" | |
14 | ||
15 | #define pmd_populate_kernel(mm, pmd, pte) \ | |
16 | set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) | |
17 | ||
18 | #define pmd_populate(mm, pmd, pte) \ | |
19 | set_pmd(pmd, __pmd(_PAGE_TABLE + \ | |
20 | ((unsigned long long)page_to_pfn(pte) << \ | |
21 | (unsigned long long) PAGE_SHIFT))) | |
22 | ||
23 | /* | |
24 | * Allocate and free page tables. | |
25 | */ | |
26 | extern pgd_t *pgd_alloc(struct mm_struct *); | |
27 | extern void pgd_free(pgd_t *pgd); | |
28 | ||
29 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); | |
30 | extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); | |
31 | ||
32 | static inline void pte_free_kernel(pte_t *pte) | |
33 | { | |
34 | free_page((unsigned long) pte); | |
35 | } | |
36 | ||
37 | static inline void pte_free(struct page *pte) | |
38 | { | |
39 | __free_page(pte); | |
40 | } | |
41 | ||
42 | #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) | |
43 | ||
44 | #ifdef CONFIG_3_LEVEL_PGTABLES | |
7ef93905 JD |
45 | |
46 | extern __inline__ void pmd_free(pmd_t *pmd) | |
47 | { | |
48 | free_page((unsigned long)pmd); | |
49 | } | |
50 | ||
51 | #define __pmd_free_tlb(tlb,x) tlb_remove_page((tlb),virt_to_page(x)) | |
1da177e4 LT |
52 | #endif |
53 | ||
54 | #define check_pgt_cache() do { } while (0) | |
55 | ||
56 | #endif | |
57 | ||
58 | /* | |
59 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
60 | * Emacs will notice this stuff at the end of the file and automatically | |
61 | * adjust the settings for this buffer only. This must remain at the end | |
62 | * of the file. | |
63 | * --------------------------------------------------------------------------- | |
64 | * Local variables: | |
65 | * c-file-style: "linux" | |
66 | * End: | |
67 | */ |