Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
115 lines
2.8 KiB
C
115 lines
2.8 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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#ifndef _UFSHCD_CRYPTO_H
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#define _UFSHCD_CRYPTO_H
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#include <scsi/scsi_cmnd.h>
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#include <ufs/ufshcd.h>
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#include "ufshcd-priv.h"
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#include <ufs/ufshci.h>
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#ifdef CONFIG_SCSI_UFS_CRYPTO
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static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
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struct ufshcd_lrb *lrbp)
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{
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if (!rq || !rq->crypt_keyslot) {
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lrbp->crypto_key_slot = -1;
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return;
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}
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lrbp->crypto_key_slot = blk_crypto_keyslot_index(rq->crypt_keyslot);
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lrbp->data_unit_num = rq->crypt_ctx->bc_dun[0];
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}
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static inline void
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ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp,
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struct request_desc_header *h)
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{
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if (lrbp->crypto_key_slot < 0)
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return;
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h->enable_crypto = 1;
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h->cci = lrbp->crypto_key_slot;
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h->dunl = cpu_to_le32(lower_32_bits(lrbp->data_unit_num));
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h->dunu = cpu_to_le32(upper_32_bits(lrbp->data_unit_num));
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}
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static inline int ufshcd_crypto_fill_prdt(struct ufs_hba *hba,
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struct scsi_cmnd *cmd)
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{
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const struct bio_crypt_ctx *crypt_ctx = scsi_cmd_to_rq(cmd)->crypt_ctx;
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struct ufshcd_lrb *lrbp = scsi_cmd_priv(cmd);
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if (crypt_ctx && hba->vops && hba->vops->fill_crypto_prdt)
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return hba->vops->fill_crypto_prdt(hba, crypt_ctx,
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lrbp->ucd_prdt_ptr,
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scsi_sg_count(cmd));
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return 0;
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}
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static inline void ufshcd_crypto_clear_prdt(struct ufs_hba *hba,
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struct scsi_cmnd *cmd)
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{
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struct ufshcd_lrb *lrbp = scsi_cmd_priv(cmd);
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if (!(hba->quirks & UFSHCD_QUIRK_KEYS_IN_PRDT))
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return;
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if (!(scsi_cmd_to_rq(cmd)->crypt_ctx))
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return;
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/* Zeroize the PRDT because it can contain cryptographic keys. */
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memzero_explicit(lrbp->ucd_prdt_ptr,
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ufshcd_sg_entry_size(hba) * scsi_sg_count(cmd));
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}
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bool ufshcd_crypto_enable(struct ufs_hba *hba);
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int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
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void ufshcd_init_crypto(struct ufs_hba *hba);
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void ufshcd_crypto_register(struct ufs_hba *hba, struct request_queue *q);
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#else /* CONFIG_SCSI_UFS_CRYPTO */
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static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
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struct ufshcd_lrb *lrbp) { }
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static inline void
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ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp,
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struct request_desc_header *h) { }
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static inline int ufshcd_crypto_fill_prdt(struct ufs_hba *hba,
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struct scsi_cmnd *cmd)
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{
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return 0;
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}
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static inline void ufshcd_crypto_clear_prdt(struct ufs_hba *hba,
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struct scsi_cmnd *cmd)
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{
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}
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static inline bool ufshcd_crypto_enable(struct ufs_hba *hba)
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{
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return false;
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}
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static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
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{
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return 0;
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}
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static inline void ufshcd_init_crypto(struct ufs_hba *hba) { }
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static inline void ufshcd_crypto_register(struct ufs_hba *hba,
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struct request_queue *q) { }
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#endif /* CONFIG_SCSI_UFS_CRYPTO */
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#endif /* _UFSHCD_CRYPTO_H */
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