LXR linux/arch/nios2/include/asm/pgalloc.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
   7 * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
   8 */
   9
  10#ifndef _ASM_NIOS2_PGALLOC_H
  11#define _ASM_NIOS2_PGALLOC_H
  12
  13#include <linux/mm.h>
  14
  15#include <asm-generic/pgalloc.h>        /* for pte_{alloc,free}_one */
  16
  17static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
  18        pte_t *pte)
  19{
  20        set_pmd(pmd, __pmd((unsigned long)pte));
  21}
  22
  23static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
  24        pgtable_t pte)
  25{
  26        set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
  27}
  28#define pmd_pgtable(pmd) pmd_page(pmd)
  29
  30/*
  31 * Initialize a new pmd table with invalid pointers.
  32 */
  33extern void pmd_init(unsigned long page, unsigned long pagetable);
  34
  35extern pgd_t *pgd_alloc(struct mm_struct *mm);
  36
  37static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  38{
  39        free_pages((unsigned long)pgd, PGD_ORDER);
  40}
  41
  42#define __pte_free_tlb(tlb, pte, addr)                          \
  43        do {                                                    \
  44                pgtable_pte_page_dtor(pte);                     \
  45                tlb_remove_page((tlb), (pte));                  \
  46        } while (0)
  47
  48#endif /* _ASM_NIOS2_PGALLOC_H */
  49