forked from Qortal/Brooklyn
04c1822c0a
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42 lines
1002 B
C
42 lines
1002 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* MMC crypto engine (inline encryption) support
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*
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* Copyright 2020 Google LLC
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*/
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#include <linux/blk-crypto.h>
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#include <linux/mmc/host.h>
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#include "core.h"
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#include "crypto.h"
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#include "queue.h"
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void mmc_crypto_set_initial_state(struct mmc_host *host)
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{
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/* Reset might clear all keys, so reprogram all the keys. */
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if (host->caps2 & MMC_CAP2_CRYPTO)
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blk_ksm_reprogram_all_keys(&host->ksm);
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}
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void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host)
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{
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if (host->caps2 & MMC_CAP2_CRYPTO)
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blk_ksm_register(&host->ksm, q);
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}
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EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue);
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void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)
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{
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struct request *req = mmc_queue_req_to_req(mqrq);
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struct mmc_request *mrq = &mqrq->brq.mrq;
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if (!req->crypt_ctx)
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return;
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mrq->crypto_ctx = req->crypt_ctx;
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if (req->crypt_keyslot)
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mrq->crypto_key_slot = blk_ksm_get_slot_idx(req->crypt_keyslot);
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}
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EXPORT_SYMBOL_GPL(mmc_crypto_prepare_req);
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