LXR linux/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
  13static 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
  25static inline void
  26ufshcd_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
  37bool ufshcd_crypto_enable(struct ufs_hba *hba);
  38
  39int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba);
  40
  41void ufshcd_init_crypto(struct ufs_hba *hba);
  42
  43void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
  44                                            struct request_queue *q);
  45
  46void ufshcd_crypto_destroy_keyslot_manager(struct ufs_hba *hba);
  47
  48#else /* CONFIG_SCSI_UFS_CRYPTO */
  49
  50static inline void ufshcd_prepare_lrbp_crypto(struct request *rq,
  51                                              struct ufshcd_lrb *lrbp) { }
  52
  53static inline void
  54ufshcd_prepare_req_desc_hdr_crypto(struct ufshcd_lrb *lrbp, u32 *dword_0,
  55                                   u32 *dword_1, u32 *dword_3) { }
  56
  57static inline bool ufshcd_crypto_enable(struct ufs_hba *hba)
  58{
  59        return false;
  60}
  61
  62static inline int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
  63{
  64        return 0;
  65}
  66
  67static inline void ufshcd_init_crypto(struct ufs_hba *hba) { }
  68
  69static inline void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
  70                                                struct request_queue *q) { }
  71
  72static inline void ufshcd_crypto_destroy_keyslot_manager(struct ufs_hba *hba)
  73{ }
  74
  75#endif /* CONFIG_SCSI_UFS_CRYPTO */
  76
  77#endif /* _UFSHCD_CRYPTO_H */
  78