1 // SPDX-License-Identifier: GPL-2.0-only
3 * MMC crypto engine (inline encryption) support
5 * Copyright 2020 Google LLC
8 #include <linux/blk-crypto.h>
9 #include <linux/mmc/host.h>
15 void mmc_crypto_set_initial_state(struct mmc_host
*host
)
17 /* Reset might clear all keys, so reprogram all the keys. */
18 if (host
->caps2
& MMC_CAP2_CRYPTO
)
19 blk_crypto_reprogram_all_keys(&host
->crypto_profile
);
22 void mmc_crypto_setup_queue(struct request_queue
*q
, struct mmc_host
*host
)
24 if (host
->caps2
& MMC_CAP2_CRYPTO
)
25 blk_crypto_register(&host
->crypto_profile
, q
);
27 EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue
);
29 void mmc_crypto_prepare_req(struct mmc_queue_req
*mqrq
)
31 struct request
*req
= mmc_queue_req_to_req(mqrq
);
32 struct mmc_request
*mrq
= &mqrq
->brq
.mrq
;
33 struct blk_crypto_keyslot
*keyslot
;
38 mrq
->crypto_ctx
= req
->crypt_ctx
;
40 keyslot
= req
->crypt_keyslot
;
42 mrq
->crypto_key_slot
= blk_crypto_keyslot_index(keyslot
);
44 EXPORT_SYMBOL_GPL(mmc_crypto_prepare_req
);