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fe6c1b86 VG |
1 | /* |
2 | * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com) | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | ||
10 | #ifndef _ASM_ARC_HUGEPAGE_H | |
11 | #define _ASM_ARC_HUGEPAGE_H | |
12 | ||
13 | #include <linux/types.h> | |
9849a569 | 14 | #define __ARCH_USE_5LEVEL_HACK |
fe6c1b86 VG |
15 | #include <asm-generic/pgtable-nopmd.h> |
16 | ||
17 | static inline pte_t pmd_pte(pmd_t pmd) | |
18 | { | |
19 | return __pte(pmd_val(pmd)); | |
20 | } | |
21 | ||
22 | static inline pmd_t pte_pmd(pte_t pte) | |
23 | { | |
24 | return __pmd(pte_val(pte)); | |
25 | } | |
26 | ||
27 | #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) | |
28 | #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) | |
29 | #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) | |
30 | #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) | |
31 | #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) | |
32 | #define pmd_mkhuge(pmd) pte_pmd(pte_mkhuge(pmd_pte(pmd))) | |
33 | #define pmd_mknotpresent(pmd) pte_pmd(pte_mknotpresent(pmd_pte(pmd))) | |
fe6c1b86 VG |
34 | #define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) |
35 | ||
36 | #define pmd_write(pmd) pte_write(pmd_pte(pmd)) | |
37 | #define pmd_young(pmd) pte_young(pmd_pte(pmd)) | |
38 | #define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd)) | |
39 | #define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) | |
fe6c1b86 VG |
40 | |
41 | #define mk_pmd(page, prot) pte_pmd(mk_pte(page, prot)) | |
42 | ||
43 | #define pmd_trans_huge(pmd) (pmd_val(pmd) & _PAGE_HW_SZ) | |
fe6c1b86 VG |
44 | |
45 | #define pfn_pmd(pfn, prot) (__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) | |
46 | ||
47 | static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) | |
48 | { | |
49 | /* | |
50 | * open-coded pte_modify() with additional retaining of HW_SZ bit | |
51 | * so that pmd_trans_huge() remains true for this PMD | |
52 | */ | |
53 | return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot)); | |
54 | } | |
55 | ||
56 | static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, | |
57 | pmd_t *pmdp, pmd_t pmd) | |
58 | { | |
59 | *pmdp = pmd; | |
60 | } | |
61 | ||
62 | extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, | |
63 | pmd_t *pmd); | |
64 | ||
fe6c1b86 VG |
65 | /* Generic variants assume pgtable_t is struct page *, hence need for these */ |
66 | #define __HAVE_ARCH_PGTABLE_DEPOSIT | |
67 | extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, | |
68 | pgtable_t pgtable); | |
69 | ||
70 | #define __HAVE_ARCH_PGTABLE_WITHDRAW | |
71 | extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); | |
72 | ||
722fe8fd VG |
73 | #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE |
74 | extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start, | |
75 | unsigned long end); | |
76 | ||
fe6c1b86 | 77 | #endif |