LXR linux/arch/arc/include/asm/hugepage.h

   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#define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
  62extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
  63                                unsigned long end);
  64
  65/* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/
  66#define pmdp_establish generic_pmdp_establish
  67
  68#endif
  69