mirror of https://gitee.com/openkylin/linux.git
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
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/*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_AVR32_PGTABLE_2LEVEL_H
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#define __ASM_AVR32_PGTABLE_2LEVEL_H
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#include <asm-generic/pgtable-nopmd.h>
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/*
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* Traditional 2-level paging structure
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*/
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#define PGDIR_SHIFT 22
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#define PTRS_PER_PGD 1024
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#define PTRS_PER_PTE 1024
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#ifndef __ASSEMBLY__
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#define pte_ERROR(e) \
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printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
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#define pgd_ERROR(e) \
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printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
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/*
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* Certain architectures need to do special things when PTEs
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* within a page table are directly modified. Thus, the following
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* hook is made available.
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*/
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#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
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#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep, pteval)
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/*
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* (pmds are folded into pgds so this doesn't get actually called,
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* but the define is needed for a generic inline function.)
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*/
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#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
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#define pte_pfn(x) ((unsigned long)(((x).pte >> PAGE_SHIFT)))
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#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
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#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
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#endif /* !__ASSEMBLY__ */
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#endif /* __ASM_AVR32_PGTABLE_2LEVEL_H */
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