| 1 | |
| 2 | |
| 3 | * MMC crypto engine (inline encryption) support
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| 4 | *
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| 5 | * Copyright 2020 Google LLC
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| 6 |
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| 7 |
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| 8 | #include <linux/blk-crypto.h>
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| 9 | #include <linux/mmc/host.h>
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| 10 |
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| 11 | #include "core.h"
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| 12 | #include "crypto.h"
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| 13 | #include "queue.h"
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| 14 |
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| 15 | void mmc_crypto_set_initial_state(struct mmc_host *host)
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| 16 | {
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| 17 |
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| 18 | if (host->caps2 & MMC_CAP2_CRYPTO)
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| 19 | blk_crypto_reprogram_all_keys(&host->crypto_profile);
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| 20 | }
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| 21 |
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| 22 | void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host)
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| 23 | {
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| 24 | if (host->caps2 & MMC_CAP2_CRYPTO)
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| 25 | blk_crypto_register(&host->crypto_profile, q);
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| 26 | }
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| 27 | EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue);
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| 28 |
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| 29 | void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)
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| 30 | {
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| 31 | struct request *req = mmc_queue_req_to_req(mqrq);
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| 32 | struct mmc_request *mrq = &mqrq->brq.mrq;
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| 33 | struct blk_crypto_keyslot *keyslot;
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| 34 |
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| 35 | if (!req->crypt_ctx)
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| 36 | return;
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| 37 |
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| 38 | mrq->crypto_ctx = req->crypt_ctx;
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| 39 |
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| 40 | keyslot = req->crypt_keyslot;
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| 41 | if (keyslot)
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| 42 | mrq->crypto_key_slot = blk_crypto_keyslot_index(keyslot);
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| 43 | }
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| 44 | EXPORT_SYMBOL_GPL(mmc_crypto_prepare_req);
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