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
  17 static 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
  23 static 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  */
  33 extern void pmd_init(unsigned long page, unsigned long pagetable);
  34
  35 extern pgd_t *pgd_alloc(struct mm_struct *mm);
  36
  37 static 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 */