kopia lustrzana https://github.com/espressif/esp-idf
52 wiersze
1.4 KiB
C
52 wiersze
1.4 KiB
C
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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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/* Single lock for SHA and AES, sharing a reserved GDMA channel */
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static _lock_t s_crypto_sha_aes_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_sha_aes_lock_acquire(void)
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{
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_lock_acquire(&s_crypto_sha_aes_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(&s_crypto_sha_aes_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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