mirror of
https://github.com/espressif/esp-idf.git
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457ce080ae
Refactor the AES driver and add HAL, LL and caps. Add better support for running AES-GCM fully in hardware.
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
// Copyright 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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//
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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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/*******************************************************************************
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* NOTICE
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* The ll is not public api, don't use in application code.
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* See readme.md in soc/include/hal/readme.md
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******************************************************************************/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "soc/hwcrypto_reg.h"
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#include "soc/dport_reg.h"
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typedef enum {
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CRYPTO_DMA_AES= 0,
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CRYPTO_DMA_SHA,
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} crypto_dma_mode_t;
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/**
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* @brief Resets the DMA
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*
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*/
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static inline void crypto_dma_ll_reset(void)
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{
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SET_PERI_REG_MASK(CRYPTO_DMA_CONF0_REG, CONF0_REG_AHBM_RST | CONF0_REG_OUT_RST | CONF0_REG_AHBM_FIFO_RST);
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CLEAR_PERI_REG_MASK(CRYPTO_DMA_CONF0_REG, CONF0_REG_AHBM_RST | CONF0_REG_OUT_RST | CONF0_REG_AHBM_FIFO_RST);
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}
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/**
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* @brief Selects the crypto DMA mode
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*
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* @param mode Mode to use, AES or SHA
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*/
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static inline void crypto_dma_ll_set_mode(crypto_dma_mode_t mode)
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{
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REG_WRITE(CRYPTO_DMA_AES_SHA_SELECT_REG, mode);
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}
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/**
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* @brief Sets up the outlink for a transfer
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*
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* @param outlink_addr Address of the outlink buffer
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*/
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static inline void crypto_dma_ll_outlink_set(uint32_t outlink_addr)
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{
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CLEAR_PERI_REG_MASK(CRYPTO_DMA_OUT_LINK_REG, OUT_LINK_REG_OUTLINK_ADDR);
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SET_PERI_REG_MASK(CRYPTO_DMA_OUT_LINK_REG, outlink_addr & OUT_LINK_REG_OUTLINK_ADDR);
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}
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/**
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* @brief Sets up the inlink for a transfer
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*
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* @param inlink_addr Address of the inlink buffer
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*/
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static inline void crypto_dma_ll_inlink_set(uint32_t inlink_addr)
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{
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CLEAR_PERI_REG_MASK(CRYPTO_DMA_IN_LINK_REG, IN_LINK_REG_INLINK_ADDR);
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SET_PERI_REG_MASK(CRYPTO_DMA_IN_LINK_REG, inlink_addr & IN_LINK_REG_INLINK_ADDR);
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}
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/**
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* @brief Starts the outlink
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*
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*/
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static inline void crypto_dma_ll_outlink_start(void)
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{
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SET_PERI_REG_MASK(CRYPTO_DMA_OUT_LINK_REG, OUT_LINK_REG_OUTLINK_START);
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}
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/**
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* @brief Starts the inlink
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*
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*/
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static inline void crypto_dma_ll_inlink_start(void)
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{
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SET_PERI_REG_MASK(CRYPTO_DMA_IN_LINK_REG, IN_LINK_REG_INLINK_START);
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}
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static inline bool crypto_dma_ll_inlink_is_eof(void)
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{
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return ((REG_READ(CRYPTO_DMA_INT_RAW_REG) & INT_RAW_IN_SUC_EOF) == INT_RAW_IN_SUC_EOF);
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}
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#ifdef __cplusplus
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}
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#endif
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