LXR linux/arch/unicore32/mm/mm.h

   1/*
   2 * linux/arch/unicore32/mm/mm.h
   3 *
   4 * Code specific to PKUnity SoC and UniCore ISA
   5 *
   6 * Copyright (C) 2001-2010 GUAN Xue-tao
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12#include <asm/hwdef-copro.h>
  13
  14/* the upper-most page table pointer */
  15extern pmd_t *top_pmd;
  16extern int sysctl_overcommit_memory;
  17
  18#define TOP_PTE(x)      pte_offset_kernel(top_pmd, x)
  19
  20static inline pmd_t *pmd_off(pgd_t *pgd, unsigned long virt)
  21{
  22        return pmd_offset((pud_t *)pgd, virt);
  23}
  24
  25static inline pmd_t *pmd_off_k(unsigned long virt)
  26{
  27        return pmd_off(pgd_offset_k(virt), virt);
  28}
  29
  30struct mem_type {
  31        unsigned int prot_pte;
  32        unsigned int prot_l1;
  33        unsigned int prot_sect;
  34};
  35
  36const struct mem_type *get_mem_type(unsigned int type);
  37
  38extern void __flush_dcache_page(struct address_space *, struct page *);
  39extern void hook_fault_code(int nr, int (*fn)
  40                (unsigned long, unsigned int, struct pt_regs *),
  41                int sig, int code, const char *name);
  42
  43void __init bootmem_init(void);
  44void uc32_mm_memblock_reserve(void);
  45