1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright 2019 Google LLC
 4 */
 5
 6#ifndef _UFSHCD_CRYPTO_H
 7#define _UFSHCD_CRYPTO_H
 8
 9#include <scsi/scsi_cmnd.h>
10#include <ufs/ufshcd.h>
11#include "ufshcd-priv.h"
12#include <ufs/ufshci.h>
13
14#ifdef CONFIG_SCSI_UFS_CRYPTO
15
16static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
17					      struct ufshcd_lrb *lrbp)
18{
19	if (!rq || !rq->crypt_keyslot) {
20		lrbp->crypto_key_slot = -1;
21		return;
22	}
23
24	lrbp->crypto_key_slot = blk_crypto_keyslot_index(rq->crypt_keyslot);
25	lrbp->data_unit_num = rq->crypt_ctx->bc_dun[0];
26}
27
28static inline void
29ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
30				   u32 *dword_1, u32 *dword_3)
31{
32	if (lrbp->crypto_key_slot >= 0) {
33		*dword_0 |= UTP_REQ_DESC_CRYPTO_ENABLE_CMD;
34		*dword_0 |= lrbp->crypto_key_slot;
35		*dword_1 = lower_32_bits(lrbp->data_unit_num);
36		*dword_3 = upper_32_bits(lrbp->data_unit_num);
37	}
38}
39
40bool ufshcd_crypto_enable(struct ufs_hba *hba);
41
42int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
43
44void ufshcd_init_crypto(struct ufs_hba *hba);
45
46void ufshcd_crypto_register(struct ufs_hba *hba, struct request_queue *q);
47
48#else /* CONFIG_SCSI_UFS_CRYPTO */
49
50static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
51					      struct ufshcd_lrb *lrbp) { }
52
53static inline void
54ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
55				   u32 *dword_1, u32 *dword_3) { }
56
57static inline bool ufshcd_crypto_enable(struct ufs_hba *hba)
58{
59	return false;
60}
61
62static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
63{
64	return 0;
65}
66
67static inline void ufshcd_init_crypto(struct ufs_hba *hba) { }
68
69static inline void ufshcd_crypto_register(struct ufs_hba *hba,
70					  struct request_queue *q) { }
71
72#endif /* CONFIG_SCSI_UFS_CRYPTO */
73
74#endif /* _UFSHCD_CRYPTO_H */