drivers/ufs/core/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 #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,
  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
  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,
  55                                    struct request_desc_header *h) { }
  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 */