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esp-idf/components/esp_eth/include/esp_eth_mac.h

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// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
#include "esp_eth_com.h"
#include "sdkconfig.h"
#if CONFIG_ETH_USE_SPI_ETHERNET
#include "driver/spi_master.h"
#endif
/**
* @brief Ethernet MAC
*
*/
typedef struct esp_eth_mac_s esp_eth_mac_t;
/**
* @brief Ethernet MAC
*
*/
struct esp_eth_mac_s {
/**
* @brief Set mediator for Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
* @param[in] eth: Ethernet mediator
*
* @return
* - ESP_OK: set mediator for Ethernet MAC successfully
* - ESP_ERR_INVALID_ARG: set mediator for Ethernet MAC failed because of invalid argument
*
*/
esp_err_t (*set_mediator)(esp_eth_mac_t *mac, esp_eth_mediator_t *eth);
/**
* @brief Initialize Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
*
* @return
* - ESP_OK: initialize Ethernet MAC successfully
* - ESP_ERR_TIMEOUT: initialize Ethernet MAC failed because of timeout
* - ESP_FAIL: initialize Ethernet MAC failed because some other error occurred
*
*/
esp_err_t (*init)(esp_eth_mac_t *mac);
/**
* @brief Deinitialize Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
*
* @return
* - ESP_OK: deinitialize Ethernet MAC successfully
* - ESP_FAIL: deinitialize Ethernet MAC failed because some error occurred
*
*/
esp_err_t (*deinit)(esp_eth_mac_t *mac);
/**
* @brief Transmit packet from Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
* @param[in] buf: packet buffer to transmit
* @param[in] length: length of packet
*
* @return
* - ESP_OK: transmit packet successfully
* - ESP_ERR_INVALID_ARG: transmit packet failed because of invalid argument
* - ESP_ERR_INVALID_STATE: transmit packet failed because of wrong state of MAC
* - ESP_FAIL: transmit packet failed because some other error occurred
*
*/
esp_err_t (*transmit)(esp_eth_mac_t *mac, uint8_t *buf, uint32_t length);
/**
* @brief Receive packet from Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
* @param[out] buf: packet buffer which will preserve the received frame
* @param[out] length: length of the received packet
*
* @note Memory of buf is allocated in the Layer2, make sure it get free after process.
* @note Before this function got invoked, the value of "length" should set by user, equals the size of buffer.
* After the function returned, the value of "length" means the real length of received data.
*
* @return
* - ESP_OK: receive packet successfully
* - ESP_ERR_INVALID_ARG: receive packet failed because of invalid argument
* - ESP_ERR_INVALID_SIZE: input buffer size is not enough to hold the incoming data.
* in this case, value of returned "length" indicates the real size of incoming data.
* - ESP_FAIL: receive packet failed because some other error occurred
*
*/
esp_err_t (*receive)(esp_eth_mac_t *mac, uint8_t *buf, uint32_t *length);
/**
* @brief Read PHY register
*
* @param[in] mac: Ethernet MAC instance
* @param[in] phy_addr: PHY chip address (0~31)
* @param[in] phy_reg: PHY register index code
* @param[out] reg_value: PHY register value
*
* @return
* - ESP_OK: read PHY register successfully
* - ESP_ERR_INVALID_ARG: read PHY register failed because of invalid argument
* - ESP_ERR_INVALID_STATE: read PHY register failed because of wrong state of MAC
* - ESP_ERR_TIMEOUT: read PHY register failed because of timeout
* - ESP_FAIL: read PHY register failed because some other error occurred
*
*/
esp_err_t (*read_phy_reg)(esp_eth_mac_t *mac, uint32_t phy_addr, uint32_t phy_reg, uint32_t *reg_value);
/**
* @brief Write PHY register
*
* @param[in] mac: Ethernet MAC instance
* @param[in] phy_addr: PHY chip address (0~31)
* @param[in] phy_reg: PHY register index code
* @param[in] reg_value: PHY register value
*
* @return
* - ESP_OK: write PHY register successfully
* - ESP_ERR_INVALID_STATE: write PHY register failed because of wrong state of MAC
* - ESP_ERR_TIMEOUT: write PHY register failed because of timeout
* - ESP_FAIL: write PHY register failed because some other error occurred
*
*/
esp_err_t (*write_phy_reg)(esp_eth_mac_t *mac, uint32_t phy_addr, uint32_t phy_reg, uint32_t reg_value);
/**
* @brief Set MAC address
*
* @param[in] mac: Ethernet MAC instance
* @param[in] addr: MAC address
*
* @return
* - ESP_OK: set MAC address successfully
* - ESP_ERR_INVALID_ARG: set MAC address failed because of invalid argument
* - ESP_FAIL: set MAC address failed because some other error occurred
*
*/
esp_err_t (*set_addr)(esp_eth_mac_t *mac, uint8_t *addr);
/**
* @brief Get MAC address
*
* @param[in] mac: Ethernet MAC instance
* @param[out] addr: MAC address
*
* @return
* - ESP_OK: get MAC address successfully
* - ESP_ERR_INVALID_ARG: get MAC address failed because of invalid argument
* - ESP_FAIL: get MAC address failed because some other error occurred
*
*/
esp_err_t (*get_addr)(esp_eth_mac_t *mac, uint8_t *addr);
/**
* @brief Set speed of MAC
*
* @param[in] ma:c Ethernet MAC instance
* @param[in] speed: MAC speed
*
* @return
* - ESP_OK: set MAC speed successfully
* - ESP_ERR_INVALID_ARG: set MAC speed failed because of invalid argument
* - ESP_FAIL: set MAC speed failed because some other error occurred
*
*/
esp_err_t (*set_speed)(esp_eth_mac_t *mac, eth_speed_t speed);
/**
* @brief Set duplex mode of MAC
*
* @param[in] mac: Ethernet MAC instance
* @param[in] duplex: MAC duplex
*
* @return
* - ESP_OK: set MAC duplex mode successfully
* - ESP_ERR_INVALID_ARG: set MAC duplex failed because of invalid argument
* - ESP_FAIL: set MAC duplex failed because some other error occurred
*
*/
esp_err_t (*set_duplex)(esp_eth_mac_t *mac, eth_duplex_t duplex);
/**
* @brief Set link status of MAC
*
* @param[in] mac: Ethernet MAC instance
* @param[in] link: Link status
*
* @return
* - ESP_OK: set link status successfully
* - ESP_ERR_INVALID_ARG: set link status failed because of invalid argument
* - ESP_FAIL: set link status failed because some other error occurred
*
*/
esp_err_t (*set_link)(esp_eth_mac_t *mac, eth_link_t link);
/**
* @brief Set promiscuous of MAC
*
* @param[in] mac: Ethernet MAC instance
* @param[in] enable: set true to enable promiscuous mode; set false to disable promiscuous mode
*
* @return
* - ESP_OK: set promiscuous mode successfully
* - ESP_FAIL: set promiscuous mode failed because some error occurred
*
*/
esp_err_t (*set_promiscuous)(esp_eth_mac_t *mac, bool enable);
/**
* @brief Free memory of Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
*
* @return
* - ESP_OK: free Ethernet MAC instance successfully
* - ESP_FAIL: free Ethernet MAC instance failed because some error occurred
*
*/
esp_err_t (*del)(esp_eth_mac_t *mac);
};
/**
* @brief Configuration of Ethernet MAC object
*
*/
typedef struct {
uint32_t sw_reset_timeout_ms; /*!< Software reset timeout value (Unit: ms) */
uint32_t rx_task_stack_size; /*!< Stack size of the receive task */
uint32_t rx_task_prio; /*!< Priority of the receive task */
int smi_mdc_gpio_num; /*!< SMI MDC GPIO number */
int smi_mdio_gpio_num; /*!< SMI MDIO GPIO number */
uint32_t flags; /*!< Flags that specify extra capability for mac driver */
} eth_mac_config_t;
#define ETH_MAC_FLAG_WORK_WITH_CACHE_DISABLE (1 << 0) /*!< MAC driver can work when cache is disabled */
/**
* @brief Default configuration for Ethernet MAC object
*
*/
#define ETH_MAC_DEFAULT_CONFIG() \
{ \
.sw_reset_timeout_ms = 100, \
.rx_task_stack_size = 4096, \
.rx_task_prio = 15, \
.smi_mdc_gpio_num = 23, \
.smi_mdio_gpio_num = 18, \
.flags = 0, \
}
#if CONFIG_ETH_USE_ESP32_EMAC
/**
* @brief Create ESP32 Ethernet MAC instance
*
* @param config: Ethernet MAC configuration
*
* @return
* - instance: create MAC instance successfully
* - NULL: create MAC instance failed because some error occurred
*/
esp_eth_mac_t *esp_eth_mac_new_esp32(const eth_mac_config_t *config);
#endif // CONFIG_ETH_USE_ESP32_EMAC
#if CONFIG_ETH_SPI_ETHERNET_DM9051
/**
* @brief DM9051 specific configuration
*
*/
typedef struct {
spi_device_handle_t spi_hdl; /*!< Handle of SPI device driver */
int int_gpio_num; /*!< Interrupt GPIO number */
} eth_dm9051_config_t;
/**
* @brief Default DM9051 specific configuration
*
*/
#define ETH_DM9051_DEFAULT_CONFIG(spi_device) \
{ \
.spi_hdl = spi_device, \
.int_gpio_num = 4, \
}
/**
* @brief Create DM9051 Ethernet MAC instance
*
* @param dm9051_config: DM9051 specific configuration
* @param mac_config: Ethernet MAC configuration
*
* @return
* - instance: create MAC instance successfully
* - NULL: create MAC instance failed because some error occurred
*/
esp_eth_mac_t *esp_eth_mac_new_dm9051(const eth_dm9051_config_t *dm9051_config, const eth_mac_config_t *mac_config);
#endif // CONFIG_ETH_SPI_ETHERNET_DM9051
#if CONFIG_ETH_USE_OPENETH
/**
* @brief Create OpenCores Ethernet MAC instance
*
* @param config: Ethernet MAC configuration
*
* @return
* - instance: create MAC instance successfully
* - NULL: create MAC instance failed because some error occurred
*/
esp_eth_mac_t *esp_eth_mac_new_openeth(const eth_mac_config_t *config);
#endif // CONFIG_ETH_USE_OPENETH
#ifdef __cplusplus
}
#endif
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