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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * MMC crypto engine (inline encryption) support4 *5 * Copyright 2020 Google LLC6 */7 8#include <linux/blk-crypto.h>9#include <linux/mmc/host.h>10 11#include "core.h"12#include "crypto.h"13#include "queue.h"14 15void mmc_crypto_set_initial_state(struct mmc_host *host)16{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);20}21 22void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host)23{24 if (host->caps2 & MMC_CAP2_CRYPTO)25 blk_crypto_register(&host->crypto_profile, q);26}27EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue);28 29void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)30{31 struct request *req = mmc_queue_req_to_req(mqrq);32 struct mmc_request *mrq = &mqrq->brq.mrq;33 struct blk_crypto_keyslot *keyslot;34 35 if (!req->crypt_ctx)36 return;37 38 mrq->crypto_ctx = req->crypt_ctx;39 40 keyslot = req->crypt_keyslot;41 if (keyslot)42 mrq->crypto_key_slot = blk_crypto_keyslot_index(keyslot);43}44EXPORT_SYMBOL_GPL(mmc_crypto_prepare_req);45