projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |