diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 19:13:17 -0400 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 01:55:19 -0400 |
commit | 8ede0bdb63305d3353efd97e9af6210afb05734e (patch) | |
tree | a9500a323d0a2dcadca43c23b5c20186f6d9b724 /include/asm-um/pgtable-3level.h | |
parent | 8569c9140bd41089f9b6be8837ca421102714a90 (diff) |
x86, um: initial part of asm-um move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/asm-um/pgtable-3level.h')
-rw-r--r-- | include/asm-um/pgtable-3level.h | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/include/asm-um/pgtable-3level.h b/include/asm-um/pgtable-3level.h deleted file mode 100644 index 0446f456b428..000000000000 --- a/include/asm-um/pgtable-3level.h +++ /dev/null | |||
@@ -1,146 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright 2003 PathScale Inc | ||
3 | * Derived from include/asm-i386/pgtable.h | ||
4 | * Licensed under the GPL | ||
5 | */ | ||
6 | |||
7 | #ifndef __UM_PGTABLE_3LEVEL_H | ||
8 | #define __UM_PGTABLE_3LEVEL_H | ||
9 | |||
10 | #include <asm-generic/pgtable-nopud.h> | ||
11 | |||
12 | /* PGDIR_SHIFT determines what a third-level page table entry can map */ | ||
13 | |||
14 | #ifdef CONFIG_64BIT | ||
15 | #define PGDIR_SHIFT 30 | ||
16 | #else | ||
17 | #define PGDIR_SHIFT 31 | ||
18 | #endif | ||
19 | #define PGDIR_SIZE (1UL << PGDIR_SHIFT) | ||
20 | #define PGDIR_MASK (~(PGDIR_SIZE-1)) | ||
21 | |||
22 | /* PMD_SHIFT determines the size of the area a second-level page table can | ||
23 | * map | ||
24 | */ | ||
25 | |||
26 | #define PMD_SHIFT 21 | ||
27 | #define PMD_SIZE (1UL << PMD_SHIFT) | ||
28 | #define PMD_MASK (~(PMD_SIZE-1)) | ||
29 | |||
30 | /* | ||
31 | * entries per page directory level | ||
32 | */ | ||
33 | |||
34 | #define PTRS_PER_PTE 512 | ||
35 | #ifdef CONFIG_64BIT | ||
36 | #define PTRS_PER_PMD 512 | ||
37 | #define PTRS_PER_PGD 512 | ||
38 | #else | ||
39 | #define PTRS_PER_PMD 1024 | ||
40 | #define PTRS_PER_PGD 1024 | ||
41 | #endif | ||
42 | |||
43 | #define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE) | ||
44 | #define FIRST_USER_ADDRESS 0 | ||
45 | |||
46 | #define pte_ERROR(e) \ | ||
47 | printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e), \ | ||
48 | pte_val(e)) | ||
49 | #define pmd_ERROR(e) \ | ||
50 | printk("%s:%d: bad pmd %p(%016lx).\n", __FILE__, __LINE__, &(e), \ | ||
51 | pmd_val(e)) | ||
52 | #define pgd_ERROR(e) \ | ||
53 | printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e), \ | ||
54 | pgd_val(e)) | ||
55 | |||
56 | #define pud_none(x) (!(pud_val(x) & ~_PAGE_NEWPAGE)) | ||
57 | #define pud_bad(x) ((pud_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE) | ||
58 | #define pud_present(x) (pud_val(x) & _PAGE_PRESENT) | ||
59 | #define pud_populate(mm, pud, pmd) \ | ||
60 | set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd))) | ||
61 | |||
62 | #ifdef CONFIG_64BIT | ||
63 | #define set_pud(pudptr, pudval) set_64bit((phys_t *) (pudptr), pud_val(pudval)) | ||
64 | #else | ||
65 | #define set_pud(pudptr, pudval) (*(pudptr) = (pudval)) | ||
66 | #endif | ||
67 | |||
68 | static inline int pgd_newpage(pgd_t pgd) | ||
69 | { | ||
70 | return(pgd_val(pgd) & _PAGE_NEWPAGE); | ||
71 | } | ||
72 | |||
73 | static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; } | ||
74 | |||
75 | #ifdef CONFIG_64BIT | ||
76 | #define set_pmd(pmdptr, pmdval) set_64bit((phys_t *) (pmdptr), pmd_val(pmdval)) | ||
77 | #else | ||
78 | #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval)) | ||
79 | #endif | ||
80 | |||
81 | struct mm_struct; | ||
82 | extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address); | ||
83 | |||
84 | static inline void pud_clear (pud_t *pud) | ||
85 | { | ||
86 | set_pud(pud, __pud(_PAGE_NEWPAGE)); | ||
87 | } | ||
88 | |||
89 | #define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK) | ||
90 | #define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PAGE_MASK)) | ||
91 | |||
92 | /* Find an entry in the second-level page table.. */ | ||
93 | #define pmd_offset(pud, address) ((pmd_t *) pud_page_vaddr(*(pud)) + \ | ||
94 | pmd_index(address)) | ||
95 | |||
96 | static inline unsigned long pte_pfn(pte_t pte) | ||
97 | { | ||
98 | return phys_to_pfn(pte_val(pte)); | ||
99 | } | ||
100 | |||
101 | static inline pte_t pfn_pte(pfn_t page_nr, pgprot_t pgprot) | ||
102 | { | ||
103 | pte_t pte; | ||
104 | phys_t phys = pfn_to_phys(page_nr); | ||
105 | |||
106 | pte_set_val(pte, phys, pgprot); | ||
107 | return pte; | ||
108 | } | ||
109 | |||
110 | static inline pmd_t pfn_pmd(pfn_t page_nr, pgprot_t pgprot) | ||
111 | { | ||
112 | return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot)); | ||
113 | } | ||
114 | |||
115 | /* | ||
116 | * Bits 0 through 3 are taken in the low part of the pte, | ||
117 | * put the 32 bits of offset into the high part. | ||
118 | */ | ||
119 | #define PTE_FILE_MAX_BITS 32 | ||
120 | |||
121 | #ifdef CONFIG_64BIT | ||
122 | |||
123 | #define pte_to_pgoff(p) ((p).pte >> 32) | ||
124 | |||
125 | #define pgoff_to_pte(off) ((pte_t) { ((off) << 32) | _PAGE_FILE }) | ||
126 | |||
127 | #else | ||
128 | |||
129 | #define pte_to_pgoff(pte) ((pte).pte_high) | ||
130 | |||
131 | #define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) }) | ||
132 | |||
133 | #endif | ||
134 | |||
135 | #endif | ||
136 | |||
137 | /* | ||
138 | * Overrides for Emacs so that we follow Linus's tabbing style. | ||
139 | * Emacs will notice this stuff at the end of the file and automatically | ||
140 | * adjust the settings for this buffer only. This must remain at the end | ||
141 | * of the file. | ||
142 | * --------------------------------------------------------------------------- | ||
143 | * Local variables: | ||
144 | * c-file-style: "linux" | ||
145 | * End: | ||
146 | */ | ||