1  // Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
 2  //
 3  // Licensed under the Apache License, Version 2.0 (the "License");
 4  // you may not use this file except in compliance with the License.
 5  // You may obtain a copy of the License at
 6  
 7  //     http://www.apache.org/licenses/LICENSE-2.0
 8  //
 9  // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  #include <sys/lock.h>
16  
17  #include "esp_crypto_lock.h"
18  
19  /* Lock for the SHA peripheral, also used by the HMAC and DS peripheral */
20  static _lock_t s_crypto_sha_lock;
21  
22  /* Lock for the AES peripheral, also used by DS peripheral */
23  static _lock_t s_crypto_aes_lock;
24  
25  /* Lock for the MPI/RSA peripheral, also used by the DS peripheral */
26  static _lock_t s_crypto_mpi_lock;
27  
28  void esp_crypto_sha_lock_acquire(void)
29  {
30      _lock_acquire(&s_crypto_sha_lock);
31  }
32  
33  void esp_crypto_sha_lock_release(void)
34  {
35      _lock_release(&s_crypto_sha_lock);
36  }
37  
38  void esp_crypto_aes_lock_acquire(void)
39  {
40      _lock_acquire(&s_crypto_aes_lock);
41  }
42  
43  void esp_crypto_aes_lock_release(void)
44  {
45      _lock_release(&s_crypto_aes_lock);
46  }
47  
48  void esp_crypto_mpi_lock_acquire(void)
49  {
50      _lock_acquire(&s_crypto_mpi_lock);
51  }
52  
53  void esp_crypto_mpi_lock_release(void)
54  {
55      _lock_release(&s_crypto_mpi_lock);
56  }