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
13static inline pte_t pmd_pte(pmd_t pmd)
14{
15	return __pte(pmd_val(pmd));
16}
17
18static 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
42static 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
51static 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
57extern 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
61extern 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