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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2020, Microsoft Corporation.
* Pavel Tatashin <[email protected]>
*/
#ifndef _ASM_TRANS_TABLE_H
#define _ASM_TRANS_TABLE_H
#include <linux/bits.h>
#include <linux/types.h>
#include <asm/pgtable-types.h>
/*
* trans_alloc_page
* - Allocator that should return exactly one zeroed page, if this
* allocator fails, trans_pgd_create_copy() and trans_pgd_map_page()
* return -ENOMEM error.
*
* trans_alloc_arg
* - Passed to trans_alloc_page as an argument
*/
struct trans_pgd_info {
void * (*trans_alloc_page)(void *arg);
void *trans_alloc_arg;
};
int trans_pgd_create_copy(struct trans_pgd_info *info, pgd_t **trans_pgd,
unsigned long start, unsigned long end);
int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd,
void *page, unsigned long dst_addr, pgprot_t pgprot);
int trans_pgd_idmap_page(struct trans_pgd_info *info, phys_addr_t *trans_ttbr0,
unsigned long *t0sz, void *page);
#endif /* _ASM_TRANS_TABLE_H */