arch/arm/include/asm/stage2_pgtable.h

   1 /*
   2  * Copyright (C) 2016 - ARM Ltd
   3  *
   4  * stage2 page table helpers
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __ARM_S2_PGTABLE_H_
  20 #define __ARM_S2_PGTABLE_H_
  21
  22 #define stage2_pgd_none(pgd)                    pgd_none(pgd)
  23 #define stage2_pgd_clear(pgd)                   pgd_clear(pgd)
  24 #define stage2_pgd_present(pgd)                 pgd_present(pgd)
  25 #define stage2_pgd_populate(pgd, pud)           pgd_populate(NULL, pgd, pud)
  26 #define stage2_pud_offset(pgd, address)         pud_offset(pgd, address)
  27 #define stage2_pud_free(pud)                    pud_free(NULL, pud)
  28
  29 #define stage2_pud_none(pud)                    pud_none(pud)
  30 #define stage2_pud_clear(pud)                   pud_clear(pud)
  31 #define stage2_pud_present(pud)                 pud_present(pud)
  32 #define stage2_pud_populate(pud, pmd)           pud_populate(NULL, pud, pmd)
  33 #define stage2_pmd_offset(pud, address)         pmd_offset(pud, address)
  34 #define stage2_pmd_free(pmd)                    pmd_free(NULL, pmd)
  35
  36 #define stage2_pud_huge(pud)                    pud_huge(pud)
  37
  38 /* Open coded p*d_addr_end that can deal with 64bit addresses */
  39 static inline phys_addr_t stage2_pgd_addr_end(phys_addr_t addr, phys_addr_t end)
  40 {
  41         phys_addr_t boundary = (addr + PGDIR_SIZE) & PGDIR_MASK;
  42
  43         return (boundary - 1 < end - 1) ? boundary : end;
  44 }
  45
  46 #define stage2_pud_addr_end(addr, end)          (end)
  47
  48 static inline phys_addr_t stage2_pmd_addr_end(phys_addr_t addr, phys_addr_t end)
  49 {
  50         phys_addr_t boundary = (addr + PMD_SIZE) & PMD_MASK;
  51
  52         return (boundary - 1 < end - 1) ? boundary : end;
  53 }
  54
  55 #define stage2_pgd_index(addr)                          pgd_index(addr)
  56
  57 #define stage2_pte_table_empty(ptep)                    kvm_page_empty(ptep)
  58 #define stage2_pmd_table_empty(pmdp)                    kvm_page_empty(pmdp)
  59 #define stage2_pud_table_empty(pudp)                    false
  60
  61 #endif  /* __ARM_S2_PGTABLE_H_ */