1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Copyright (c) 2020, Microsoft Corporation.
5 * Pavel Tatashin <pasha.tatashin@soleen.com>
8 #ifndef _ASM_TRANS_TABLE_H
9 #define _ASM_TRANS_TABLE_H
11 #include <linux/bits.h>
12 #include <linux/types.h>
13 #include <asm/pgtable-types.h>
17 * - Allocator that should return exactly one zeroed page, if this
18 * allocator fails, trans_pgd_create_copy() and trans_pgd_map_page()
19 * return -ENOMEM error.
22 * - Passed to trans_alloc_page as an argument
25 struct trans_pgd_info {
26 void * (*trans_alloc_page)(void *arg);
27 void *trans_alloc_arg;
30 int trans_pgd_create_copy(struct trans_pgd_info *info, pgd_t **trans_pgd,
31 unsigned long start, unsigned long end);
33 int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd,
34 void *page, unsigned long dst_addr, pgprot_t pgprot);
36 int trans_pgd_idmap_page(struct trans_pgd_info *info, phys_addr_t *trans_ttbr0,
37 unsigned long *t0sz, void *page);
39 #endif /* _ASM_TRANS_TABLE_H */