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 75