1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * drivers/hyperhold/hp_device.h
4 *
5 * Copyright (c) 2020-2022 Huawei Technologies Co., Ltd.
6 */
7
8#ifndef _HP_DEVICE_H_
9#define _HP_DEVICE_H_
10
11#include <linux/kernel.h>
12#include <linux/blkdev.h>
13#include <crypto/skcipher.h>
14
15enum {
16	HP_DEV_ENCRYPT,
17	HP_DEV_DECRYPT,
18};
19
20struct hp_device {
21	struct file *filp;
22	struct block_device *bdev;
23	u32 old_block_size;
24	u64 dev_size;
25	u32 sec_size;
26
27	struct crypto_skcipher *ctfm;
28	struct blk_crypto_key *blk_key;
29};
30
31void unbind_bdev(struct hp_device *dev);
32bool bind_bdev(struct hp_device *dev, const char *name);
33bool crypto_init(struct hp_device *dev, bool soft);
34void crypto_deinit(struct hp_device *dev);
35int soft_crypt_page(struct crypto_skcipher *ctfm,
36	struct page *dst_page, struct page *src_page, unsigned int op);
37void inline_crypt_bio(struct blk_crypto_key *blk_key, struct bio *bio);
38#endif
39