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,u32 * dword_0,u32 * dword_1,u32 * dword_3)29 ufshcd_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 
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,u32 * dword_0,u32 * dword_1,u32 * dword_3)54 ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
55 				   u32 *dword_1, u32 *dword_3) { }
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