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5f97f7f9 HS |
1 | /* |
2 | * Copyright (C) 2004-2006 Atmel Corporation | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | #ifndef __ASM_AVR32_PGTABLE_2LEVEL_H | |
9 | #define __ASM_AVR32_PGTABLE_2LEVEL_H | |
10 | ||
11 | #include <asm-generic/pgtable-nopmd.h> | |
12 | ||
13 | /* | |
14 | * Traditional 2-level paging structure | |
15 | */ | |
16 | #define PGDIR_SHIFT 22 | |
17 | #define PTRS_PER_PGD 1024 | |
18 | ||
19 | #define PTRS_PER_PTE 1024 | |
20 | ||
21 | #ifndef __ASSEMBLY__ | |
22 | #define pte_ERROR(e) \ | |
23 | printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) | |
24 | #define pgd_ERROR(e) \ | |
25 | printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) | |
26 | ||
27 | /* | |
28 | * Certain architectures need to do special things when PTEs | |
29 | * within a page table are directly modified. Thus, the following | |
30 | * hook is made available. | |
31 | */ | |
32 | #define set_pte(pteptr, pteval) (*(pteptr) = pteval) | |
33 | #define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep, pteval) | |
34 | ||
35 | /* | |
36 | * (pmds are folded into pgds so this doesn't get actually called, | |
37 | * but the define is needed for a generic inline function.) | |
38 | */ | |
39 | #define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval) | |
40 | ||
41 | #define pte_pfn(x) ((unsigned long)(((x).pte >> PAGE_SHIFT))) | |
42 | #define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) | |
43 | #define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) | |
44 | ||
45 | #endif /* !__ASSEMBLY__ */ | |
46 | ||
47 | #endif /* __ASM_AVR32_PGTABLE_2LEVEL_H */ |