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 */