blob: 425dd567b5b955424ef4f995ddf49decdf4637fd [file] [log] [blame]
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -07001/*
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 */