/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com) */ #ifndef _ASM_ARC_HUGEPAGE_H #define _ASM_ARC_HUGEPAGE_H #include <linux/types.h> #define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> static inline pte_t pmd_pte(pmd_t pmd) { return __pte(pmd_val(pmd)); } static inline pmd_t pte_pmd(pte_t pte) { return __pmd(pte_val(pte)); } #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) #define pmd_mkhuge(pmd) pte_pmd(pte_mkhuge(pmd_pte(pmd))) #define pmd_mknotpresent(pmd) pte_pmd(pte_mknotpresent(pmd_pte(pmd))) #define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) #define pmd_write(pmd) pte_write(pmd_pte(pmd)) #define pmd_young(pmd) pte_young(pmd_pte(pmd)) #define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd)) #define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) #define mk_pmd(page, prot) pte_pmd(mk_pte(page, prot)) #define pmd_trans_huge(pmd) (pmd_val(pmd) & _PAGE_HW_SZ) #define pfn_pmd(pfn, prot) (__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) { /* * open-coded pte_modify() with additional retaining of HW_SZ bit * so that pmd_trans_huge() remains true for this PMD */ return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot)); } static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd) { *pmdp = pmd; } extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd); /* Generic variants assume pgtable_t is struct page *, hence need for these */ #define __HAVE_ARCH_PGTABLE_DEPOSIT extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, pgtable_t pgtable); #define __HAVE_ARCH_PGTABLE_WITHDRAW extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); /* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/ #define pmdp_establish generic_pmdp_establish #endif