kopia lustrzana https://github.com/espressif/esp-idf
76 wiersze
1.6 KiB
C
76 wiersze
1.6 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <sys/lock.h>
|
|
|
|
#include "esp_crypto_lock.h"
|
|
|
|
/* Lock overview:
|
|
SHA: peripheral independent, but DMA is shared with AES
|
|
AES: peripheral independent, but DMA is shared with SHA
|
|
MPI/RSA: independent
|
|
HMAC: needs SHA
|
|
DS: needs HMAC (which needs SHA), AES and MPI
|
|
*/
|
|
|
|
/* Lock for DS peripheral */
|
|
static _lock_t s_crypto_ds_lock;
|
|
|
|
/* Lock for HMAC peripheral */
|
|
static _lock_t s_crypto_hmac_lock;
|
|
|
|
/* Lock for the MPI/RSA peripheral, also used by the DS peripheral */
|
|
static _lock_t s_crypto_mpi_lock;
|
|
|
|
/* Single lock for SHA and AES, sharing a reserved GDMA channel */
|
|
static _lock_t s_crypto_sha_aes_lock;
|
|
|
|
void esp_crypto_hmac_lock_acquire(void)
|
|
{
|
|
_lock_acquire(&s_crypto_hmac_lock);
|
|
esp_crypto_sha_aes_lock_acquire();
|
|
}
|
|
|
|
void esp_crypto_hmac_lock_release(void)
|
|
{
|
|
esp_crypto_sha_aes_lock_release();
|
|
_lock_release(&s_crypto_hmac_lock);
|
|
}
|
|
|
|
void esp_crypto_ds_lock_acquire(void)
|
|
{
|
|
_lock_acquire(&s_crypto_ds_lock);
|
|
esp_crypto_hmac_lock_acquire();
|
|
esp_crypto_mpi_lock_acquire();
|
|
}
|
|
|
|
void esp_crypto_ds_lock_release(void)
|
|
{
|
|
esp_crypto_mpi_lock_release();
|
|
esp_crypto_hmac_lock_release();
|
|
_lock_release(&s_crypto_ds_lock);
|
|
}
|
|
|
|
void esp_crypto_sha_aes_lock_acquire(void)
|
|
{
|
|
_lock_acquire(&s_crypto_sha_aes_lock);
|
|
}
|
|
|
|
void esp_crypto_sha_aes_lock_release(void)
|
|
{
|
|
_lock_release(&s_crypto_sha_aes_lock);
|
|
}
|
|
|
|
void esp_crypto_mpi_lock_acquire(void)
|
|
{
|
|
_lock_acquire(&s_crypto_mpi_lock);
|
|
}
|
|
|
|
void esp_crypto_mpi_lock_release(void)
|
|
{
|
|
_lock_release(&s_crypto_mpi_lock);
|
|
}
|