1/*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 *   This program is free software; you can redistribute it and/or
5 *   modify it under the terms of the GNU General Public License
6 *   as published by the Free Software Foundation, version 2.
7 *
8 *   This program is distributed in the hope that it will be useful, but
9 *   WITHOUT ANY WARRANTY; without even the implied warranty of
10 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 *   NON INFRINGEMENT.  See the GNU General Public License for
12 *   more details.
13 */
14
15#ifndef _ASM_TILE_HUGETLB_H
16#define _ASM_TILE_HUGETLB_H
17
18#include <asm/page.h>
19
20
21static inline int is_hugepage_only_range(struct mm_struct *mm,
22					 unsigned long addr,
23					 unsigned long len) {
24	return 0;
25}
26
27/*
28 * If the arch doesn't supply something else, assume that hugepage
29 * size aligned regions are ok without further preparation.
30 */
31static inline int prepare_hugepage_range(struct file *file,
32					 unsigned long addr, unsigned long len)
33{
34	struct hstate *h = hstate_file(file);
35	if (len & ~huge_page_mask(h))
36		return -EINVAL;
37	if (addr & ~huge_page_mask(h))
38		return -EINVAL;
39	return 0;
40}
41
42static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
43{
44}
45
46static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
47					  unsigned long addr, unsigned long end,
48					  unsigned long floor,
49					  unsigned long ceiling)
50{
51	free_pgd_range(tlb, addr, end, floor, ceiling);
52}
53
54static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
55				   pte_t *ptep, pte_t pte)
56{
57	set_pte(ptep, pte);
58}
59
60static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
61					    unsigned long addr, pte_t *ptep)
62{
63	return ptep_get_and_clear(mm, addr, ptep);
64}
65
66static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
67					 unsigned long addr, pte_t *ptep)
68{
69	ptep_clear_flush(vma, addr, ptep);
70}
71
72static inline int huge_pte_none(pte_t pte)
73{
74	return pte_none(pte);
75}
76
77static inline pte_t huge_pte_wrprotect(pte_t pte)
78{
79	return pte_wrprotect(pte);
80}
81
82static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
83					   unsigned long addr, pte_t *ptep)
84{
85	ptep_set_wrprotect(mm, addr, ptep);
86}
87
88static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
89					     unsigned long addr, pte_t *ptep,
90					     pte_t pte, int dirty)
91{
92	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
93}
94
95static inline pte_t huge_ptep_get(pte_t *ptep)
96{
97	return *ptep;
98}
99
100static inline int arch_prepare_hugepage(struct page *page)
101{
102	return 0;
103}
104
105static inline void arch_release_hugepage(struct page *page)
106{
107}
108
109#endif /* _ASM_TILE_HUGETLB_H */
110