1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
4 */
5
6
7 #ifndef _ASM_ARC_HUGEPAGE_H
8 #define _ASM_ARC_HUGEPAGE_H
9
10 #include <linux/types.h>
11 #include <asm-generic/pgtable-nopmd.h>
12
pmd_pte(pmd_t pmd)13 static inline pte_t pmd_pte(pmd_t pmd)
14 {
15 return __pte(pmd_val(pmd));
16 }
17
pte_pmd(pte_t pte)18 static inline pmd_t pte_pmd(pte_t pte)
19 {
20 return __pmd(pte_val(pte));
21 }
22
23 #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
24 #define pmd_mkwrite_novma(pmd) pte_pmd(pte_mkwrite_novma(pmd_pte(pmd)))
25 #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
26 #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
27 #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd)))
28 #define pmd_mkhuge(pmd) pte_pmd(pte_mkhuge(pmd_pte(pmd)))
29 #define pmd_mkinvalid(pmd) pte_pmd(pte_mknotpresent(pmd_pte(pmd)))
30 #define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd)))
31
32 #define pmd_write(pmd) pte_write(pmd_pte(pmd))
33 #define pmd_young(pmd) pte_young(pmd_pte(pmd))
34 #define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
35
36 #define mk_pmd(page, prot) pte_pmd(mk_pte(page, prot))
37
38 #define pmd_trans_huge(pmd) (pmd_val(pmd) & _PAGE_HW_SZ)
39
40 #define pfn_pmd(pfn, prot) (__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
41
pmd_modify(pmd_t pmd,pgprot_t newprot)42 static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
43 {
44 /*
45 * open-coded pte_modify() with additional retaining of HW_SZ bit
46 * so that pmd_trans_huge() remains true for this PMD
47 */
48 return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot));
49 }
50
set_pmd_at(struct mm_struct * mm,unsigned long addr,pmd_t * pmdp,pmd_t pmd)51 static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
52 pmd_t *pmdp, pmd_t pmd)
53 {
54 *pmdp = pmd;
55 }
56
57 extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
58 pmd_t *pmd);
59
60 #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
61 extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
62 unsigned long end);
63
64 /* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/
65 #define pmdp_establish generic_pmdp_establish
66
67 #endif
68
