32f1d1ca0e
Add functions to use eMMC inline encryption hardware capability inline with JEDEC eMMC v5.2 specification and to work with block keyslot manager. Also add crypto variant vops to handle quirks in individual inline encryption hardware. The vops fallback to default implementation which is JEDEC eMMC v5.2 compliant. Change-Id: I72b85d572d7c76b966e34b80e7e8eca83a2bb35f Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
183 lines
4.4 KiB
C
183 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright 2019 Google LLC
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*
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* Copyright (c) 2020 The Linux Foundation. All rights reserved.
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*
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*/
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#ifndef _CQHCI_CRYPTO_H
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#define _CQHCI_CRYPTO_H
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#ifdef CONFIG_MMC_CQHCI_CRYPTO
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#include <linux/mmc/host.h>
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#include "cqhci.h"
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static inline int cqhci_num_keyslots(struct cqhci_host *host)
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{
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return host->crypto_capabilities.config_count + 1;
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}
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static inline bool cqhci_keyslot_valid(struct cqhci_host *host,
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unsigned int slot)
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{
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/*
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* The actual number of configurations supported is (CFGC+1), so slot
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* numbers range from 0 to config_count inclusive.
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*/
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return slot < cqhci_num_keyslots(host);
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}
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static inline bool cqhci_host_is_crypto_supported(struct cqhci_host *host)
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{
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return host->crypto_capabilities.reg_val != 0;
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}
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static inline bool cqhci_is_crypto_enabled(struct cqhci_host *host)
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{
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return host->caps & CQHCI_CAP_CRYPTO_SUPPORT;
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}
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/* Functions implementing eMMC v5.2 specification behaviour */
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int cqhci_prepare_crypto_desc_spec(struct cqhci_host *host,
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struct mmc_request *mrq,
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u64 *ice_ctx);
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void cqhci_crypto_enable_spec(struct cqhci_host *host);
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void cqhci_crypto_disable_spec(struct cqhci_host *host);
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int cqhci_host_init_crypto_spec(struct cqhci_host *host,
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const struct keyslot_mgmt_ll_ops *ksm_ops);
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void cqhci_crypto_setup_rq_keyslot_manager_spec(struct cqhci_host *host,
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struct request_queue *q);
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void cqhci_crypto_destroy_rq_keyslot_manager_spec(struct cqhci_host *host,
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struct request_queue *q);
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void cqhci_crypto_set_vops(struct cqhci_host *host,
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struct cqhci_host_crypto_variant_ops *crypto_vops);
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/* Crypto Variant Ops Support */
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void cqhci_crypto_enable(struct cqhci_host *host);
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void cqhci_crypto_disable(struct cqhci_host *host);
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int cqhci_host_init_crypto(struct cqhci_host *host);
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void cqhci_crypto_setup_rq_keyslot_manager(struct cqhci_host *host,
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struct request_queue *q);
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void cqhci_crypto_destroy_rq_keyslot_manager(struct cqhci_host *host,
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struct request_queue *q);
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int cqhci_crypto_get_ctx(struct cqhci_host *host,
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struct mmc_request *mrq,
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u64 *ice_ctx);
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int cqhci_complete_crypto_desc(struct cqhci_host *host,
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struct mmc_request *mrq,
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u64 *ice_ctx);
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void cqhci_crypto_debug(struct cqhci_host *host);
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int cqhci_crypto_suspend(struct cqhci_host *host);
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int cqhci_crypto_resume(struct cqhci_host *host);
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int cqhci_crypto_reset(struct cqhci_host *host);
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int cqhci_crypto_recovery_finish(struct cqhci_host *host);
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int cqhci_crypto_cap_find(void *host_p, enum blk_crypto_mode_num crypto_mode,
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unsigned int data_unit_size);
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#else /* CONFIG_MMC_CQHCI_CRYPTO */
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static inline bool cqhci_keyslot_valid(struct cqhci_host *host,
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unsigned int slot)
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{
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return false;
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}
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static inline bool cqhci_host_is_crypto_supported(struct cqhci_host *host)
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{
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return false;
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}
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static inline bool cqhci_is_crypto_enabled(struct cqhci_host *host)
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{
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return false;
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}
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static inline void cqhci_crypto_enable(struct cqhci_host *host) { }
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static inline int cqhci_crypto_cap_find(void *host_p,
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enum blk_crypto_mode_num crypto_mode,
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unsigned int data_unit_size)
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{
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return 0;
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}
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static inline void cqhci_crypto_disable(struct cqhci_host *host) { }
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static inline int cqhci_host_init_crypto(struct cqhci_host *host)
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{
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return 0;
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}
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static inline void cqhci_crypto_setup_rq_keyslot_manager(
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struct cqhci_host *host,
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struct request_queue *q) { }
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static inline void
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cqhci_crypto_destroy_rq_keyslot_manager(struct cqhci_host *host,
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struct request_queue *q) { }
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static inline int cqhci_crypto_get_ctx(struct cqhci_host *host,
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struct mmc_request *mrq,
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u64 *ice_ctx)
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{
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*ice_ctx = 0;
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return 0;
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}
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static inline int cqhci_complete_crypto_desc(struct cqhci_host *host,
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struct mmc_request *mrq,
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u64 *ice_ctx)
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{
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return 0;
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}
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static inline void cqhci_crypto_debug(struct cqhci_host *host) { }
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static inline void cqhci_crypto_set_vops(struct cqhci_host *host,
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struct cqhci_host_crypto_variant_ops *crypto_vops) { }
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static inline int cqhci_crypto_suspend(struct cqhci_host *host)
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{
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return 0;
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}
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static inline int cqhci_crypto_resume(struct cqhci_host *host)
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{
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return 0;
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}
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static inline int cqhci_crypto_reset(struct cqhci_host *host)
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{
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return 0;
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}
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static inline int cqhci_crypto_recovery_finish(struct cqhci_host *host)
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{
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return 0;
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}
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#endif /* CONFIG_MMC_CQHCI_CRYPTO */
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#endif /* _CQHCI_CRYPTO_H */
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