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 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 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 50 static inline void ufshcd_prepare_lrbp_crypto(struct request *rq, 51 struct ufshcd_lrb *lrbp) { } 52 53 static inline void 54 ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0, 55 u32 *dword_1, u32 *dword_3) { } 56 57 static inline bool ufshcd_crypto_enable(struct ufs_hba *hba) 58 { 59 return false; 60 } 61 62 static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba) 63 { 64 return 0; 65 } 66 67 static inline void ufshcd_init_crypto(struct ufs_hba *hba) { } 68 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