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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * MMC crypto engine (inline encryption) support
- *
- * Copyright 2020 Google LLC
- */
- #include <linux/blk-crypto.h>
- #include <linux/mmc/host.h>
- #include "core.h"
- #include "crypto.h"
- #include "queue.h"
- void mmc_crypto_set_initial_state(struct mmc_host *host)
- {
- /* Reset might clear all keys, so reprogram all the keys. */
- if (host->caps2 & MMC_CAP2_CRYPTO)
- blk_ksm_reprogram_all_keys(&host->ksm);
- }
- void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host)
- {
- if (host->caps2 & MMC_CAP2_CRYPTO)
- blk_ksm_register(&host->ksm, q);
- }
- EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue);
- void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)
- {
- struct request *req = mmc_queue_req_to_req(mqrq);
- struct mmc_request *mrq = &mqrq->brq.mrq;
- if (!req->crypt_ctx)
- return;
- mrq->crypto_ctx = req->crypt_ctx;
- if (req->crypt_keyslot)
- mrq->crypto_key_slot = blk_ksm_get_slot_idx(req->crypt_keyslot);
- }
- EXPORT_SYMBOL_GPL(mmc_crypto_prepare_req);
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