/*
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* linux/arch/unicore32/mm/mm.h
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Copyright (C) 2001-2010 GUAN Xue-tao
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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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#include <asm/hwdef-copro.h>
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/* the upper-most page table pointer */
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extern pmd_t *top_pmd;
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extern int sysctl_overcommit_memory;
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#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
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static inline pmd_t *pmd_off(pgd_t *pgd, unsigned long virt)
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{
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return pmd_offset((pud_t *)pgd, virt);
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}
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static inline pmd_t *pmd_off_k(unsigned long virt)
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{
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return pmd_off(pgd_offset_k(virt), virt);
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}
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struct mem_type {
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unsigned int prot_pte;
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unsigned int prot_l1;
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unsigned int prot_sect;
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};
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const struct mem_type *get_mem_type(unsigned int type);
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extern void __flush_dcache_page(struct address_space *, struct page *);
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extern void hook_fault_code(int nr, int (*fn)
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(unsigned long, unsigned int, struct pt_regs *),
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int sig, int code, const char *name);
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void __init bootmem_init(void);
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void uc32_mm_memblock_reserve(void);
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