| Haavard Skinnemoen | 5f97f7f | 2006-09-25 23:32:13 -0700 | [diff] [blame^] | 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 */ |