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