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
13/*
14 * Hugetlb definitions.
15 */
16#define HPAGE_SHIFT		PMD_SHIFT
17#define HPAGE_SIZE		(_AC(1, UL) << HPAGE_SHIFT)
18#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
19
20static inline pte_t pmd_pte(pmd_t pmd)
21{
22	return __pte(pmd_val(pmd));
23}
24
25static inline pmd_t pte_pmd(pte_t pte)
26{
27	return __pmd(pte_val(pte));
28}
29
30#define pmd_wrprotect(pmd)	pte_pmd(pte_wrprotect(pmd_pte(pmd)))
31#define pmd_mkwrite_novma(pmd)	pte_pmd(pte_mkwrite_novma(pmd_pte(pmd)))
32#define pmd_mkdirty(pmd)	pte_pmd(pte_mkdirty(pmd_pte(pmd)))
33#define pmd_mkold(pmd)		pte_pmd(pte_mkold(pmd_pte(pmd)))
34#define pmd_mkyoung(pmd)	pte_pmd(pte_mkyoung(pmd_pte(pmd)))
35#define pmd_mkhuge(pmd)		pte_pmd(pte_mkhuge(pmd_pte(pmd)))
36#define pmd_mkinvalid(pmd)	pte_pmd(pte_mknotpresent(pmd_pte(pmd)))
37#define pmd_mkclean(pmd)	pte_pmd(pte_mkclean(pmd_pte(pmd)))
38
39#define pmd_write(pmd)		pte_write(pmd_pte(pmd))
40#define pmd_young(pmd)		pte_young(pmd_pte(pmd))
 
41#define pmd_dirty(pmd)		pte_dirty(pmd_pte(pmd))
42
43#define mk_pmd(page, prot)	pte_pmd(mk_pte(page, prot))
44
45#define pmd_trans_huge(pmd)	(pmd_val(pmd) & _PAGE_HW_SZ)
46
47#define pfn_pmd(pfn, prot)	(__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
48
49static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
50{
51        /*
52         * open-coded pte_modify() with additional retaining of HW_SZ bit
53         * so that pmd_trans_huge() remains true for this PMD
54         */
55        return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot));
56}
57
58static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
59			      pmd_t *pmdp, pmd_t pmd)
60{
61	*pmdp = pmd;
62}
63
64extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
65				 pmd_t *pmd);
 
 
 
 
 
 
 
 
66
67#define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
68extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
69				unsigned long end);
70
71/* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/
72#define pmdp_establish generic_pmdp_establish
73
74#endif

 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(pmd)	pte_pmd(pte_mkwrite(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_pfn(pmd)		pte_pfn(pmd_pte(pmd))
35#define pmd_dirty(pmd)		pte_dirty(pmd_pte(pmd))
36
37#define mk_pmd(page, prot)	pte_pmd(mk_pte(page, prot))
38
39#define pmd_trans_huge(pmd)	(pmd_val(pmd) & _PAGE_HW_SZ)
40
41#define pfn_pmd(pfn, prot)	(__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
42
43static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
44{
45        /*
46         * open-coded pte_modify() with additional retaining of HW_SZ bit
47         * so that pmd_trans_huge() remains true for this PMD
48         */
49        return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot));
50}
51
52static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
53			      pmd_t *pmdp, pmd_t pmd)
54{
55	*pmdp = pmd;
56}
57
58extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
59				 pmd_t *pmd);
60
61/* Generic variants assume pgtable_t is struct page *, hence need for these */
62#define __HAVE_ARCH_PGTABLE_DEPOSIT
63extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
64				       pgtable_t pgtable);
65
66#define __HAVE_ARCH_PGTABLE_WITHDRAW
67extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
68
69#define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
70extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
71				unsigned long end);
72
73/* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/
74#define pmdp_establish generic_pmdp_establish
75
76#endif