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#ifdef CONFIG_SCSI_UFS_CRYPTO
10#include "ufshcd.h"
11#include "ufshci.h"
12
13static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
14					      struct ufshcd_lrb *lrbp)
15{
16	if (!rq || !rq->crypt_keyslot) {
17		lrbp->crypto_key_slot = -1;
18		return;
19	}
20
21	lrbp->crypto_key_slot = blk_ksm_get_slot_idx(rq->crypt_keyslot);
22	lrbp->data_unit_num = rq->crypt_ctx->bc_dun[0];
23}
24
25static inline void
26ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
27				   u32 *dword_1, u32 *dword_3)
28{
29	if (lrbp->crypto_key_slot >= 0) {
30		*dword_0 |= UTP_REQ_DESC_CRYPTO_ENABLE_CMD;
31		*dword_0 |= lrbp->crypto_key_slot;
32		*dword_1 = lower_32_bits(lrbp->data_unit_num);
33		*dword_3 = upper_32_bits(lrbp->data_unit_num);
34	}
35}
36
37bool ufshcd_crypto_enable(struct ufs_hba *hba);
38
39int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
40
41void ufshcd_init_crypto(struct ufs_hba *hba);
42
43void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
44					    struct request_queue *q);
45
46void ufshcd_crypto_destroy_keyslot_manager(struct ufs_hba *hba);
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_setup_rq_keyslot_manager(struct ufs_hba *hba,
70						struct request_queue *q) { }
71
72static inline void ufshcd_crypto_destroy_keyslot_manager(struct ufs_hba *hba)
73{ }
74
75#endif /* CONFIG_SCSI_UFS_CRYPTO */
76
77#endif /* _UFSHCD_CRYPTO_H */
78