162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * MMC crypto engine (inline encryption) support 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright 2020 Google LLC 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <linux/blk-crypto.h> 962306a36Sopenharmony_ci#include <linux/mmc/host.h> 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include "core.h" 1262306a36Sopenharmony_ci#include "crypto.h" 1362306a36Sopenharmony_ci#include "queue.h" 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_civoid mmc_crypto_set_initial_state(struct mmc_host *host) 1662306a36Sopenharmony_ci{ 1762306a36Sopenharmony_ci /* Reset might clear all keys, so reprogram all the keys. */ 1862306a36Sopenharmony_ci if (host->caps2 & MMC_CAP2_CRYPTO) 1962306a36Sopenharmony_ci blk_crypto_reprogram_all_keys(&host->crypto_profile); 2062306a36Sopenharmony_ci} 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_civoid mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host) 2362306a36Sopenharmony_ci{ 2462306a36Sopenharmony_ci if (host->caps2 & MMC_CAP2_CRYPTO) 2562306a36Sopenharmony_ci blk_crypto_register(&host->crypto_profile, q); 2662306a36Sopenharmony_ci} 2762306a36Sopenharmony_ciEXPORT_SYMBOL_GPL(mmc_crypto_setup_queue); 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_civoid mmc_crypto_prepare_req(struct mmc_queue_req *mqrq) 3062306a36Sopenharmony_ci{ 3162306a36Sopenharmony_ci struct request *req = mmc_queue_req_to_req(mqrq); 3262306a36Sopenharmony_ci struct mmc_request *mrq = &mqrq->brq.mrq; 3362306a36Sopenharmony_ci struct blk_crypto_keyslot *keyslot; 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci if (!req->crypt_ctx) 3662306a36Sopenharmony_ci return; 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci mrq->crypto_ctx = req->crypt_ctx; 3962306a36Sopenharmony_ci 4062306a36Sopenharmony_ci keyslot = req->crypt_keyslot; 4162306a36Sopenharmony_ci if (keyslot) 4262306a36Sopenharmony_ci mrq->crypto_key_slot = blk_crypto_keyslot_index(keyslot); 4362306a36Sopenharmony_ci} 4462306a36Sopenharmony_ciEXPORT_SYMBOL_GPL(mmc_crypto_prepare_req); 45