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 #define __ARCH_USE_5LEVEL_HACK 12 #include <asm-generic/pgtable-nopmd.h> 13 14 static inline pte_t pmd_pte(pmd_t pmd) 15 { 16 return __pte(pmd_val(pmd)); 17 } 18 19 static inline pmd_t pte_pmd(pte_t pte) 20 { 21 return __pmd(pte_val(pte)); 22 } 23 24 #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) 25 #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) 26 #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) 27 #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) 28 #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) 29 #define pmd_mkhuge(pmd) pte_pmd(pte_mkhuge(pmd_pte(pmd))) 30 #define pmd_mknotpresent(pmd) pte_pmd(pte_mknotpresent(pmd_pte(pmd))) 31 #define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) 32 33 #define pmd_write(pmd) pte_write(pmd_pte(pmd)) 34 #define pmd_young(pmd) pte_young(pmd_pte(pmd)) 35 #define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd)) 36 #define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) 37 38 #define mk_pmd(page, prot) pte_pmd(mk_pte(page, prot)) 39 40 #define pmd_trans_huge(pmd) (pmd_val(pmd) & _PAGE_HW_SZ) 41 42 #define pfn_pmd(pfn, prot) (__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) 43 44 static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) 45 { 46 /* 47 * open-coded pte_modify() with additional retaining of HW_SZ bit 48 * so that pmd_trans_huge() remains true for this PMD 49 */ 50 return __pmd((pmd_val(pmd) & (_PAGE_CHG_MASK | _PAGE_HW_SZ)) | pgprot_val(newprot)); 51 } 52 53 static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, 54 pmd_t *pmdp, pmd_t pmd) 55 { 56 *pmdp = pmd; 57 } 58 59 extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, 60 pmd_t *pmd); 61 62 /* Generic variants assume pgtable_t is struct page *, hence need for these */ 63 #define __HAVE_ARCH_PGTABLE_DEPOSIT 64 extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, 65 pgtable_t pgtable); 66 67 #define __HAVE_ARCH_PGTABLE_WITHDRAW 68 extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); 69 70 #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE 71 extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start, 72 unsigned long end); 73 74 /* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/ 75 #define pmdp_establish generic_pmdp_establish 76 77 #endif 78