kopia lustrzana https://github.com/espressif/esp-idf
68 wiersze
1.5 KiB
C
68 wiersze
1.5 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <sys/lock.h>
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#include "esp_crypto_lock.h"
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/* Lock overview:
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SHA: peripheral independent, but DMA is shared with AES
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AES: peripheral independent, but DMA is shared with SHA
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MPI/RSA: independent
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HMAC: needs SHA
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DS: needs HMAC (which needs SHA), AES and MPI
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*/
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/*
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* Single lock for SHA, HMAC, DS and AES peripherals.
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* SHA and AES share a reserved GDMA channel.
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* DS uses HMAC, HMAC uses SHA, so they may also not be used simulaneously.
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*/
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static _lock_t s_crypto_sha_aes_hmac_ds_lock;
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/* Lock for the MPI/RSA peripheral, also used by the DS peripheral */
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static _lock_t s_crypto_mpi_lock;
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void esp_crypto_ds_lock_acquire(void)
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{
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_lock_acquire_recursive(&s_crypto_sha_aes_hmac_ds_lock);
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}
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void esp_crypto_ds_lock_release(void)
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{
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_lock_release_recursive(&s_crypto_sha_aes_hmac_ds_lock);
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}
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void esp_crypto_hmac_lock_acquire(void)
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{
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_lock_acquire_recursive(&s_crypto_sha_aes_hmac_ds_lock);
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}
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void esp_crypto_hmac_lock_release(void)
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{
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_lock_release_recursive(&s_crypto_sha_aes_hmac_ds_lock);
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}
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void esp_crypto_sha_aes_lock_acquire(void)
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{
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_lock_acquire_recursive(&s_crypto_sha_aes_hmac_ds_lock);
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}
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void esp_crypto_sha_aes_lock_release(void)
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{
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_lock_release_recursive(&s_crypto_sha_aes_hmac_ds_lock);
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}
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void esp_crypto_mpi_lock_acquire(void)
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{
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_lock_acquire(&s_crypto_mpi_lock);
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}
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void esp_crypto_mpi_lock_release(void)
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{
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_lock_release(&s_crypto_mpi_lock);
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}
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