1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright 2020 Google LLC 4 */ 5 6 #include <linux/blk-crypto.h> 7 #include <linux/blkdev.h> 8 #include <linux/keyslot-manager.h> 9 #include <linux/mmc/host.h> 10 11 #include "core.h" 12 #include "queue.h" 13 mmc_crypto_setup_queue(struct mmc_host * host,struct request_queue * q)14void mmc_crypto_setup_queue(struct mmc_host *host, struct request_queue *q) 15 { 16 if (host->caps2 & MMC_CAP2_CRYPTO) 17 q->ksm = host->ksm; 18 } 19 EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue); 20 mmc_crypto_free_host(struct mmc_host * host)21void mmc_crypto_free_host(struct mmc_host *host) 22 { 23 keyslot_manager_destroy(host->ksm); 24 } 25 mmc_crypto_prepare_req(struct mmc_queue_req * mqrq)26void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq) 27 { 28 struct request *req = mmc_queue_req_to_req(mqrq); 29 struct mmc_request *mrq = &mqrq->brq.mrq; 30 const struct bio_crypt_ctx *bc; 31 32 if (!bio_crypt_should_process(req)) 33 return; 34 35 bc = req->bio->bi_crypt_context; 36 mrq->crypto_key_slot = bc->bc_keyslot; 37 mrq->data_unit_num = bc->bc_dun[0]; 38 mrq->crypto_key = bc->bc_key; 39 } 40 EXPORT_SYMBOL_GPL(mmc_crypto_prepare_req); 41