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

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * linux/arch/unicore32/mm/mm.h
   4 *
   5 * Code specific to PKUnity SoC and UniCore ISA
   6 *
   7 * Copyright (C) 2001-2010 GUAN Xue-tao
   8 */
   9#include <asm/hwdef-copro.h>
  10
  11/* the upper-most page table pointer */
  12extern pmd_t *top_pmd;
  13extern int sysctl_overcommit_memory;
  14
  15#define TOP_PTE(x)      pte_offset_kernel(top_pmd, x)
  16
  17static inline pmd_t *pmd_off(pgd_t *pgd, unsigned long virt)
  18{
  19        return pmd_offset((pud_t *)pgd, virt);
  20}
  21
  22static inline pmd_t *pmd_off_k(unsigned long virt)
  23{
  24        return pmd_off(pgd_offset_k(virt), virt);
  25}
  26
  27struct mem_type {
  28        unsigned int prot_pte;
  29        unsigned int prot_l1;
  30        unsigned int prot_sect;
  31};
  32
  33const struct mem_type *get_mem_type(unsigned int type);
  34
  35extern void __flush_dcache_page(struct address_space *, struct page *);
  36extern void hook_fault_code(int nr, int (*fn)
  37                (unsigned long, unsigned int, struct pt_regs *),
  38                int sig, int code, const char *name);
  39
  40void __init bootmem_init(void);
  41void uc32_mm_memblock_reserve(void);
  42