drivers/scsi/ufs/ufshcd-crypto.h

   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
  13 static 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
  25 static inline void
  26 ufshcd_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
  37 bool ufshcd_crypto_enable(struct ufs_hba *hba);
  38
  39 int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
  40
  41 void ufshcd_init_crypto(struct ufs_hba *hba);
  42
  43 void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
  44                                             struct request_queue *q);
  45
  46 #else /* CONFIG_SCSI_UFS_CRYPTO */
  47
  48 static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
  49                                               struct ufshcd_lrb *lrbp) { }
  50
  51 static inline void
  52 ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
  53                                    u32 *dword_1, u32 *dword_3) { }
  54
  55 static inline bool ufshcd_crypto_enable(struct ufs_hba *hba)
  56 {
  57         return false;
  58 }
  59
  60 static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
  61 {
  62         return 0;
  63 }
  64
  65 static inline void ufshcd_init_crypto(struct ufs_hba *hba) { }
  66
  67 static inline void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
  68                                                 struct request_queue *q) { }
  69
  70 #endif /* CONFIG_SCSI_UFS_CRYPTO */
  71
  72 #endif /* _UFSHCD_CRYPTO_H */