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feat(mbedtls/esp_crypto_shared_gdma): support AXI-DMA in the crypto shared gdma layer

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- In case of AXI-DMA, the DMA descriptors need to be 8 bytes aligned
lldesc_t do not satify this condition thus we need to replace it with
dma_descriptor_t (align(4) and align(8)) in esp_crypto_shared_gdma.

- Added new shared gdma start API that supports the dma_descriptor_t
DMA descriptor.

- Added some generic dma descriptor macros and helper functions

- replace lldesc_t with dma_descriptor_t
This commit is contained in:
harshal.patil
2023-10-12 14:51:04 +05:30
parent 2c570ed53b
commit 83dd60307f
13 changed files with 309 additions and 123 deletions
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23
components/mbedtls/port/include/esp_crypto_shared_gdma.h
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@@ -1,14 +1,15 @@
/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include "soc/lldesc.h"
#include "esp_crypto_dma.h"
#include "esp_private/gdma.h"
#include "esp_err.h"
#include "soc/lldesc.h"
#ifdef __cplusplus
extern "C" {
@@ -16,17 +17,31 @@ extern "C" {
/**
* @brief Start a GDMA transfer on the shared crypto DMA channel
* Only supports AHB-DMA.
*
* @note Will allocate a GDMA channel for AES & SHA if no such channel is already allocated
*
* @param input Input linked list descriptor
* @param output Output linked list descriptor
* @param input Input linked list descriptor (lldesc_t *)
* @param output Output linked list descriptor (lldesc_t *)
* @param peripheral Crypto peripheral to connect the DMA to, either GDMA_TRIG_PERIPH_AES or
* GDMA_TRIG_PERIPH_SHA
* @return esp_err_t ESP_FAIL if no GDMA channel available
*/
esp_err_t esp_crypto_shared_gdma_start(const lldesc_t *input, const lldesc_t *output, gdma_trigger_peripheral_t peripheral);
/**
* @brief Start a GDMA transfer on the shared crypto DMA channel
* Supports AXI-DMA and AHB-DMA.
*
* @note Will allocate a GDMA channel for AES & SHA if no such channel is already allocated
*
* @param input Input linked list descriptor (crypto_dma_desc_t *)
* @param output Output linked list descriptor (crypto_dma_desc_t *)
* @param peripheral Crypto peripheral to connect the DMA to, either GDMA_TRIG_PERIPH_AES or
* GDMA_TRIG_PERIPH_SHA
* @return esp_err_t ESP_FAIL if no GDMA channel available
*/
esp_err_t esp_crypto_shared_gdma_start_axi_ahb(const crypto_dma_desc_t *input, const crypto_dma_desc_t *output, gdma_trigger_peripheral_t peripheral);
/**
* @brief Frees any shared crypto DMA channel, if esp_crypto_shared_gdma_start is called after