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
ufshcd_prepare_lrbp_crypto(struct request * rq,struct ufshcd_lrb * lrbp)16 static 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
28 static inline void
ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb * lrbp,struct request_desc_header * h)29 ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp,
30 struct request_desc_header *h)
31 {
32 if (lrbp->crypto_key_slot < 0)
33 return;
34 h->enable_crypto = 1;
35 h->cci = lrbp->crypto_key_slot;
36 h->dunl = cpu_to_le32(lower_32_bits(lrbp->data_unit_num));
37 h->dunu = cpu_to_le32(upper_32_bits(lrbp->data_unit_num));
38 }
39
40 bool ufshcd_crypto_enable(struct ufs_hba *hba);
41
42 int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
43
44 void ufshcd_init_crypto(struct ufs_hba *hba);
45
46 void ufshcd_crypto_register(struct ufs_hba *hba, struct request_queue *q);
47
48 #else /* CONFIG_SCSI_UFS_CRYPTO */
49
ufshcd_prepare_lrbp_crypto(struct request * rq,struct ufshcd_lrb * lrbp)50 static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
51 struct ufshcd_lrb *lrbp) { }
52
53 static inline void
ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb * lrbp,struct request_desc_header * h)54 ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp,
55 struct request_desc_header *h) { }
56
ufshcd_crypto_enable(struct ufs_hba * hba)57 static inline bool ufshcd_crypto_enable(struct ufs_hba *hba)
58 {
59 return false;
60 }
61
ufshcd_hba_init_crypto_capabilities(struct ufs_hba * hba)62 static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
63 {
64 return 0;
65 }
66
ufshcd_init_crypto(struct ufs_hba * hba)67 static inline void ufshcd_init_crypto(struct ufs_hba *hba) { }
68
ufshcd_crypto_register(struct ufs_hba * hba,struct request_queue * q)69 static 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 */
75