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 /* Single lock for SHA and AES engine which both use the crypto DMA */
20 
21 static _lock_t s_crypto_dma_lock;
22 
23 /* Lock for the MPI/RSA peripheral, also used by the DS peripheral */
24 static _lock_t s_crypto_mpi_lock;
25 
esp_crypto_dma_lock_acquire(void)26 void esp_crypto_dma_lock_acquire(void)
27 {
28     _lock_acquire(&s_crypto_dma_lock);
29 }
30 
esp_crypto_dma_lock_release(void)31 void esp_crypto_dma_lock_release(void)
32 {
33     _lock_release(&s_crypto_dma_lock);
34 }
35 
esp_crypto_mpi_lock_acquire(void)36 void esp_crypto_mpi_lock_acquire(void)
37 {
38     _lock_acquire(&s_crypto_mpi_lock);
39 }
40 
esp_crypto_mpi_lock_release(void)41 void esp_crypto_mpi_lock_release(void)
42 {
43     _lock_release(&s_crypto_mpi_lock);
44 }
45