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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_M32R_PGALLOC_H
2#define _ASM_M32R_PGALLOC_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#include <linux/mm.h>
5
6#include <asm/io.h>
7
8#define pmd_populate_kernel(mm, pmd, pte) \
9 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
10
11static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
Martin Schwidefsky2f569af2008-02-08 04:22:04 -080012 pgtable_t pte)
Linus Torvalds1da177e2005-04-16 15:20:36 -070013{
14 set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
15}
Martin Schwidefsky2f569af2008-02-08 04:22:04 -080016#define pmd_pgtable(pmd) pmd_page(pmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
18/*
19 * Allocate and free page tables.
20 */
21static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
22{
23 pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
24
25 return pgd;
26}
27
Benjamin Herrenschmidt5e541972008-02-04 22:29:14 -080028static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
Linus Torvalds1da177e2005-04-16 15:20:36 -070029{
30 free_page((unsigned long)pgd);
31}
32
33static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
34 unsigned long address)
35{
36 pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
37
38 return pte;
39}
40
Martin Schwidefsky2f569af2008-02-08 04:22:04 -080041static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 unsigned long address)
43{
44 struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
45
Martin Schwidefsky2f569af2008-02-08 04:22:04 -080046 pgtable_page_ctor(pte);
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 return pte;
48}
49
Benjamin Herrenschmidt5e541972008-02-04 22:29:14 -080050static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
Linus Torvalds1da177e2005-04-16 15:20:36 -070051{
52 free_page((unsigned long)pte);
53}
54
Martin Schwidefsky2f569af2008-02-08 04:22:04 -080055static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
Linus Torvalds1da177e2005-04-16 15:20:36 -070056{
Martin Schwidefsky2f569af2008-02-08 04:22:04 -080057 pgtable_page_dtor(pte);
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 __free_page(pte);
59}
60
Benjamin Herrenschmidt9e1b32c2009-07-22 15:44:28 +100061#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63/*
64 * allocating and freeing a pmd is trivial: the 1-entry pmd is
65 * inside the pgd, so has no extra memory associated with it.
66 * (In the PAE case we free the pmds as part of the pgd.)
67 */
68
69#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
Benjamin Herrenschmidt5e541972008-02-04 22:29:14 -080070#define pmd_free(mm, x) do { } while (0)
Benjamin Herrenschmidt9e1b32c2009-07-22 15:44:28 +100071#define __pmd_free_tlb(tlb, x, addr) do { } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#define pgd_populate(mm, pmd, pte) BUG()
73
74#define check_pgt_cache() do { } while (0)
75
76#endif /* _ASM_M32R_PGALLOC_H */