31dac92e5f
OpenCores Ethernet MAC has a relatively simple interface, and is already supported in QEMU. This makes it a good candidate for enabling network support when running IDF apps in QEMU, compared to the relatively more complex task of writing a QEMU model of ESP32 EMAC. This driver is written with QEMU in mind: it does not implement or handle things that aren't implemented or handled in the QEMU model: error flags, error interrupts. The transmit part of the driver also assumes that the TX operation is done immediately when the TX descriptor is written (which is the case with QEMU), hence waiting for the TX operation to complete is not necessary. For simplicity, the driver assumes that the peripheral register occupy the same memory range as the ESP32 EMAC registers, and the same interrupt source number is used.
319 lines
9.9 KiB
C
319 lines
9.9 KiB
C
// Copyright 2019 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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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#include "esp_eth_com.h"
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#include "sdkconfig.h"
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#if CONFIG_ETH_USE_SPI_ETHERNET
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#include "driver/gpio.h"
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#include "driver/spi_master.h"
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#endif
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/**
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* @brief Ethernet MAC
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*
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*/
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typedef struct esp_eth_mac_s esp_eth_mac_t;
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/**
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* @brief Ethernet MAC
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*
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*/
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struct esp_eth_mac_s {
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/**
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* @brief Set mediator for Ethernet MAC
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] eth: Ethernet mediator
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*
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* @return
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* - ESP_OK: set mediator for Ethernet MAC successfully
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* - ESP_ERR_INVALID_ARG: set mediator for Ethernet MAC failed because of invalid argument
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*
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*/
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esp_err_t (*set_mediator)(esp_eth_mac_t *mac, esp_eth_mediator_t *eth);
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/**
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* @brief Initialize Ethernet MAC
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*
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* @param[in] mac: Ethernet MAC instance
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*
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* @return
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* - ESP_OK: initialize Ethernet MAC successfully
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* - ESP_ERR_TIMEOUT: initialize Ethernet MAC failed because of timeout
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* - ESP_FAIL: initialize Ethernet MAC failed because some other error occurred
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*
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*/
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esp_err_t (*init)(esp_eth_mac_t *mac);
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/**
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* @brief Deinitialize Ethernet MAC
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*
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* @param[in] mac: Ethernet MAC instance
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*
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* @return
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* - ESP_OK: deinitialize Ethernet MAC successfully
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* - ESP_FAIL: deinitialize Ethernet MAC failed because some error occurred
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*
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*/
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esp_err_t (*deinit)(esp_eth_mac_t *mac);
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/**
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* @brief Transmit packet from Ethernet MAC
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] buf: packet buffer to transmit
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* @param[in] length: length of packet
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*
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* @return
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* - ESP_OK: transmit packet successfully
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* - ESP_ERR_INVALID_ARG: transmit packet failed because of invalid argument
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* - ESP_ERR_INVALID_STATE: transmit packet failed because of wrong state of MAC
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* - ESP_FAIL: transmit packet failed because some other error occurred
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*
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*/
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esp_err_t (*transmit)(esp_eth_mac_t *mac, uint8_t *buf, uint32_t length);
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/**
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* @brief Receive packet from Ethernet MAC
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[out] buf: packet buffer which will preserve the received frame
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* @param[out] length: length of the received packet
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*
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* @note Memory of buf is allocated in the Layer2, make sure it get free after process.
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* @note Before this function got invoked, the value of "length" should set by user, equals the size of buffer.
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* After the function returned, the value of "length" means the real length of received data.
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*
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* @return
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* - ESP_OK: receive packet successfully
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* - ESP_ERR_INVALID_ARG: receive packet failed because of invalid argument
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* - ESP_ERR_INVALID_SIZE: input buffer size is not enough to hold the incoming data.
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* in this case, value of returned "length" indicates the real size of incoming data.
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* - ESP_FAIL: receive packet failed because some other error occurred
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*
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*/
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esp_err_t (*receive)(esp_eth_mac_t *mac, uint8_t *buf, uint32_t *length);
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/**
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* @brief Read PHY register
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] phy_addr: PHY chip address (0~31)
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* @param[in] phy_reg: PHY register index code
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* @param[out] reg_value: PHY register value
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*
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* @return
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* - ESP_OK: read PHY register successfully
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* - ESP_ERR_INVALID_ARG: read PHY register failed because of invalid argument
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* - ESP_ERR_INVALID_STATE: read PHY register failed because of wrong state of MAC
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* - ESP_ERR_TIMEOUT: read PHY register failed because of timeout
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* - ESP_FAIL: read PHY register failed because some other error occurred
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*
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*/
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esp_err_t (*read_phy_reg)(esp_eth_mac_t *mac, uint32_t phy_addr, uint32_t phy_reg, uint32_t *reg_value);
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/**
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* @brief Write PHY register
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] phy_addr: PHY chip address (0~31)
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* @param[in] phy_reg: PHY register index code
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* @param[in] reg_value: PHY register value
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*
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* @return
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* - ESP_OK: write PHY register successfully
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* - ESP_ERR_INVALID_STATE: write PHY register failed because of wrong state of MAC
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* - ESP_ERR_TIMEOUT: write PHY register failed because of timeout
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* - ESP_FAIL: write PHY register failed because some other error occurred
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*
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*/
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esp_err_t (*write_phy_reg)(esp_eth_mac_t *mac, uint32_t phy_addr, uint32_t phy_reg, uint32_t reg_value);
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/**
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* @brief Set MAC address
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] addr: MAC address
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*
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* @return
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* - ESP_OK: set MAC address successfully
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* - ESP_ERR_INVALID_ARG: set MAC address failed because of invalid argument
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* - ESP_FAIL: set MAC address failed because some other error occurred
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*
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*/
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esp_err_t (*set_addr)(esp_eth_mac_t *mac, uint8_t *addr);
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/**
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* @brief Get MAC address
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[out] addr: MAC address
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*
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* @return
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* - ESP_OK: get MAC address successfully
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* - ESP_ERR_INVALID_ARG: get MAC address failed because of invalid argument
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* - ESP_FAIL: get MAC address failed because some other error occurred
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*
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*/
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esp_err_t (*get_addr)(esp_eth_mac_t *mac, uint8_t *addr);
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/**
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* @brief Set speed of MAC
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*
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* @param[in] ma:c Ethernet MAC instance
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* @param[in] speed: MAC speed
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*
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* @return
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* - ESP_OK: set MAC speed successfully
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* - ESP_ERR_INVALID_ARG: set MAC speed failed because of invalid argument
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* - ESP_FAIL: set MAC speed failed because some other error occurred
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*
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*/
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esp_err_t (*set_speed)(esp_eth_mac_t *mac, eth_speed_t speed);
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/**
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* @brief Set duplex mode of MAC
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] duplex: MAC duplex
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*
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* @return
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* - ESP_OK: set MAC duplex mode successfully
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* - ESP_ERR_INVALID_ARG: set MAC duplex failed because of invalid argument
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* - ESP_FAIL: set MAC duplex failed because some other error occurred
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*
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*/
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esp_err_t (*set_duplex)(esp_eth_mac_t *mac, eth_duplex_t duplex);
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/**
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* @brief Set link status of MAC
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] link: Link status
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*
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* @return
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* - ESP_OK: set link status successfully
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* - ESP_ERR_INVALID_ARG: set link status failed because of invalid argument
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* - ESP_FAIL: set link status failed because some other error occurred
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*
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*/
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esp_err_t (*set_link)(esp_eth_mac_t *mac, eth_link_t link);
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/**
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* @brief Set promiscuous of MAC
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*
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* @param[in] mac: Ethernet MAC instance
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* @param[in] enable: set true to enable promiscuous mode; set false to disable promiscuous mode
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*
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* @return
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* - ESP_OK: set promiscuous mode successfully
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* - ESP_FAIL: set promiscuous mode failed because some error occurred
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*
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*/
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esp_err_t (*set_promiscuous)(esp_eth_mac_t *mac, bool enable);
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/**
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* @brief Free memory of Ethernet MAC
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*
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* @param[in] mac: Ethernet MAC instance
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*
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* @return
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* - ESP_OK: free Ethernet MAC instance successfully
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* - ESP_FAIL: free Ethernet MAC instance failed because some error occurred
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*
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*/
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esp_err_t (*del)(esp_eth_mac_t *mac);
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};
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/**
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* @brief Configuration of Ethernet MAC object
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*
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*/
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typedef struct {
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uint32_t sw_reset_timeout_ms; /*!< Software reset timeout value (Unit: ms) */
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uint32_t rx_task_stack_size; /*!< Stack size of the receive task */
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uint32_t rx_task_prio; /*!< Priority of the receive task */
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} eth_mac_config_t;
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/**
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* @brief Default configuration for Ethernet MAC object
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*
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*/
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#define ETH_MAC_DEFAULT_CONFIG() \
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{ \
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.sw_reset_timeout_ms = 100, \
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.rx_task_stack_size = 4096, \
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.rx_task_prio = 15, \
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}
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#if CONFIG_ETH_USE_ESP32_EMAC
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/**
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* @brief Create ESP32 Ethernet MAC instance
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*
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* @param config: Ethernet MAC configuration
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*
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* @return
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* - instance: create MAC instance successfully
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* - NULL: create MAC instance failed because some error occurred
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*/
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esp_eth_mac_t *esp_eth_mac_new_esp32(const eth_mac_config_t *config);
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#endif
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#if CONFIG_ETH_SPI_ETHERNET_DM9051
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/**
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* @brief DM9051 specific configuration
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*
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*/
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typedef struct {
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spi_device_handle_t spi_hdl; /*!< Handle of SPI device driver */
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} eth_dm9051_config_t;
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/**
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* @brief Default DM9051 specific configuration
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*
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*/
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#define ETH_DM9051_DEFAULT_CONFIG(spi_device) \
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{ \
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.spi_hdl = spi_device, \
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}
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/**
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* @brief Create DM9051 Ethernet MAC instance
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*
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* @param dm9051_config: DM9051 specific configuration
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* @param mac_config: Ethernet MAC configuration
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*
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* @return
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* - instance: create MAC instance successfully
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* - NULL: create MAC instance failed because some error occurred
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*/
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esp_eth_mac_t *esp_eth_mac_new_dm9051(const eth_dm9051_config_t *dm9051_config, const eth_mac_config_t *mac_config);
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#endif
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#if CONFIG_ETH_USE_OPENETH
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esp_eth_mac_t *esp_eth_mac_new_openeth(const eth_mac_config_t *config);
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#endif // CONFIG_ETH_USE_OPENETH
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#ifdef __cplusplus
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}
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#endif
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