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 */
stage2_pgd_addr_end(phys_addr_t addr,phys_addr_t end)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
stage2_pmd_addr_end(phys_addr_t addr,phys_addr_t end)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_ */
62