From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/mmc/host/cqhci-crypto.h | 50 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 drivers/mmc/host/cqhci-crypto.h (limited to 'drivers/mmc/host/cqhci-crypto.h') diff --git a/drivers/mmc/host/cqhci-crypto.h b/drivers/mmc/host/cqhci-crypto.h new file mode 100644 index 0000000000..d7fb084f56 --- /dev/null +++ b/drivers/mmc/host/cqhci-crypto.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * CQHCI crypto engine (inline encryption) support + * + * Copyright 2020 Google LLC + */ + +#ifndef LINUX_MMC_CQHCI_CRYPTO_H +#define LINUX_MMC_CQHCI_CRYPTO_H + +#include + +#include "cqhci.h" + +#ifdef CONFIG_MMC_CRYPTO + +int cqhci_crypto_init(struct cqhci_host *host); + +/* + * Returns the crypto bits that should be set in bits 64-127 of the + * task descriptor. + */ +static inline u64 cqhci_crypto_prep_task_desc(struct mmc_request *mrq) +{ + if (!mrq->crypto_ctx) + return 0; + + /* We set max_dun_bytes_supported=4, so all DUNs should be 32-bit. */ + WARN_ON_ONCE(mrq->crypto_ctx->bc_dun[0] > U32_MAX); + + return CQHCI_CRYPTO_ENABLE_BIT | + CQHCI_CRYPTO_KEYSLOT(mrq->crypto_key_slot) | + mrq->crypto_ctx->bc_dun[0]; +} + +#else /* CONFIG_MMC_CRYPTO */ + +static inline int cqhci_crypto_init(struct cqhci_host *host) +{ + return 0; +} + +static inline u64 cqhci_crypto_prep_task_desc(struct mmc_request *mrq) +{ + return 0; +} + +#endif /* !CONFIG_MMC_CRYPTO */ + +#endif /* LINUX_MMC_CQHCI_CRYPTO_H */ -- cgit v1.2.3