1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2019 Google LLC
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #ifndef _UFSHCD_CRYPTO_H
7*4882a593Smuzhiyun #define _UFSHCD_CRYPTO_H
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #ifdef CONFIG_SCSI_UFS_CRYPTO
10*4882a593Smuzhiyun #include "ufshcd.h"
11*4882a593Smuzhiyun #include "ufshci.h"
12*4882a593Smuzhiyun
ufshcd_prepare_lrbp_crypto(struct request * rq,struct ufshcd_lrb * lrbp)13*4882a593Smuzhiyun static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
14*4882a593Smuzhiyun struct ufshcd_lrb *lrbp)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun if (!rq || !rq->crypt_keyslot) {
17*4882a593Smuzhiyun lrbp->crypto_key_slot = -1;
18*4882a593Smuzhiyun return;
19*4882a593Smuzhiyun }
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun lrbp->crypto_key_slot = blk_ksm_get_slot_idx(rq->crypt_keyslot);
22*4882a593Smuzhiyun lrbp->data_unit_num = rq->crypt_ctx->bc_dun[0];
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun static inline void
ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb * lrbp,u32 * dword_0,u32 * dword_1,u32 * dword_3)26*4882a593Smuzhiyun ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
27*4882a593Smuzhiyun u32 *dword_1, u32 *dword_3)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun if (lrbp->crypto_key_slot >= 0) {
30*4882a593Smuzhiyun *dword_0 |= UTP_REQ_DESC_CRYPTO_ENABLE_CMD;
31*4882a593Smuzhiyun *dword_0 |= lrbp->crypto_key_slot;
32*4882a593Smuzhiyun *dword_1 = lower_32_bits(lrbp->data_unit_num);
33*4882a593Smuzhiyun *dword_3 = upper_32_bits(lrbp->data_unit_num);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
ufshcd_crypto_clear_prdt(struct ufs_hba * hba,struct ufshcd_lrb * lrbp)37*4882a593Smuzhiyun static inline void ufshcd_crypto_clear_prdt(struct ufs_hba *hba,
38*4882a593Smuzhiyun struct ufshcd_lrb *lrbp)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun if (!(hba->quirks & UFSHCD_QUIRK_KEYS_IN_PRDT))
41*4882a593Smuzhiyun return;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun if (!lrbp->cmd->request->crypt_ctx)
44*4882a593Smuzhiyun return;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun memzero_explicit(lrbp->ucd_prdt_ptr,
47*4882a593Smuzhiyun hba->sg_entry_size * scsi_sg_count(lrbp->cmd));
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun bool ufshcd_crypto_enable(struct ufs_hba *hba);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun void ufshcd_init_crypto(struct ufs_hba *hba);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
57*4882a593Smuzhiyun struct request_queue *q);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun #else /* CONFIG_SCSI_UFS_CRYPTO */
60*4882a593Smuzhiyun
ufshcd_prepare_lrbp_crypto(struct request * rq,struct ufshcd_lrb * lrbp)61*4882a593Smuzhiyun static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
62*4882a593Smuzhiyun struct ufshcd_lrb *lrbp) { }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun static inline void
ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb * lrbp,u32 * dword_0,u32 * dword_1,u32 * dword_3)65*4882a593Smuzhiyun ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
66*4882a593Smuzhiyun u32 *dword_1, u32 *dword_3) { }
67*4882a593Smuzhiyun
ufshcd_crypto_clear_prdt(struct ufs_hba * hba,struct ufshcd_lrb * lrbp)68*4882a593Smuzhiyun static inline void ufshcd_crypto_clear_prdt(struct ufs_hba *hba,
69*4882a593Smuzhiyun struct ufshcd_lrb *lrbp) { }
70*4882a593Smuzhiyun
ufshcd_crypto_enable(struct ufs_hba * hba)71*4882a593Smuzhiyun static inline bool ufshcd_crypto_enable(struct ufs_hba *hba)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun return false;
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
ufshcd_hba_init_crypto_capabilities(struct ufs_hba * hba)76*4882a593Smuzhiyun static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
77*4882a593Smuzhiyun {
78*4882a593Smuzhiyun return 0;
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
ufshcd_init_crypto(struct ufs_hba * hba)81*4882a593Smuzhiyun static inline void ufshcd_init_crypto(struct ufs_hba *hba) { }
82*4882a593Smuzhiyun
ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba * hba,struct request_queue * q)83*4882a593Smuzhiyun static inline void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
84*4882a593Smuzhiyun struct request_queue *q) { }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun #endif /* CONFIG_SCSI_UFS_CRYPTO */
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun #endif /* _UFSHCD_CRYPTO_H */
89