esp-idf/components/esp_eth/include/esp_eth_mac.h
Ondrej Kosta 4051b80b4d esp_netif: remove dependency of L2 TAP Interface from netif_lwip
esp_eth: extended infrastructure to optionally provide more advanced access to MAC/PHY layers
2022-04-08 16:40:29 +02:00

584 lines
19 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdbool.h>
#include "esp_eth_com.h"
#include "sdkconfig.h"
#ifdef __cplusplus
extern "C" {
#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 Start Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
*
* @return
* - ESP_OK: start Ethernet MAC successfully
* - ESP_FAIL: start Ethernet MAC failed because some other error occurred
*
*/
esp_err_t (*start)(esp_eth_mac_t *mac);
/**
* @brief Stop Ethernet MAC
*
* @param[in] mac: Ethernet MAC instance
*
* @return
* - ESP_OK: stop Ethernet MAC successfully
* - ESP_FAIL: stop Ethernet MAC failed because some error occurred
*
*/
esp_err_t (*stop)(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_SIZE: number of actually sent bytes differs to expected
* - ESP_FAIL: transmit packet failed because some other error occurred
*
* @note Returned error codes may differ for each specific MAC chip.
*
*/
esp_err_t (*transmit)(esp_eth_mac_t *mac, uint8_t *buf, uint32_t length);
/**
* @brief Transmit packet from Ethernet MAC constructed with special parameters at Layer2.
*
* @param[in] mac: Ethernet MAC instance
* @param[in] argc: number variable arguments
* @param[in] args: variable arguments
*
* @note Typical intended use case is to make possible to construct a frame from multiple higher layer
* buffers without a need of buffer reallocations. However, other use cases are not limited.
*
* @return
* - ESP_OK: transmit packet successfully
* - ESP_ERR_INVALID_SIZE: number of actually sent bytes differs to expected
* - ESP_FAIL: transmit packet failed because some other error occurred
*
* @note Returned error codes may differ for each specific MAC chip.
*
*/
esp_err_t (*transmit_vargs)(esp_eth_mac_t *mac, uint32_t argc, va_list args);
/**
* @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 Enable flow control on MAC layer or not
*
* @param[in] mac: Ethernet MAC instance
* @param[in] enable: set true to enable flow control; set false to disable flow control
*
* @return
* - ESP_OK: set flow control successfully
* - ESP_FAIL: set flow control failed because some error occurred
*
*/
esp_err_t (*enable_flow_ctrl)(esp_eth_mac_t *mac, bool enable);
/**
* @brief Set the PAUSE ability of peer node
*
* @param[in] mac: Ethernet MAC instance
* @param[in] ability: zero indicates that pause function is supported by link partner; non-zero indicates that pause function is not supported by link partner
*
* @return
* - ESP_OK: set peer pause ability successfully
* - ESP_FAIL: set peer pause ability failed because some error occurred
*/
esp_err_t (*set_peer_pause_ability)(esp_eth_mac_t *mac, uint32_t ability);
/**
* @brief Custom IO function of MAC driver. This function is intended to extend common options of esp_eth_ioctl to cover specifics of MAC chip.
*
* @note This function may not be assigned when the MAC chip supports only most common set of configuration options.
*
* @param[in] mac: Ethernet MAC instance
* @param[in] cmd: IO control command
* @param[in, out] data: address of data for `set` command or address where to store the data when used with `get` command
*
* @return
* - ESP_OK: process io command successfully
* - ESP_ERR_INVALID_ARG: process io command failed because of some invalid argument
* - ESP_FAIL: process io command failed because some other error occurred
* - ESP_ERR_NOT_SUPPORTED: requested feature is not supported
*/
esp_err_t (*custom_ioctl)(esp_eth_mac_t *mac, uint32_t cmd, void *data);
/**
* @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 RMII Clock Mode Options
*
*/
typedef enum {
/**
* @brief Default values configured using Kconfig are going to be used when "Default" selected.
*
*/
EMAC_CLK_DEFAULT,
/**
* @brief Input RMII Clock from external. EMAC Clock GPIO number needs to be configured when this option is selected.
*
* @note MAC will get RMII clock from outside. Note that ESP32 only supports GPIO0 to input the RMII clock.
*
*/
EMAC_CLK_EXT_IN,
/**
* @brief Output RMII Clock from internal APLL Clock. EMAC Clock GPIO number needs to be configured when this option is selected.
*
*/
EMAC_CLK_OUT
} emac_rmii_clock_mode_t;
/**
* @brief RMII Clock GPIO number Options
*
*/
typedef enum {
/**
* @brief MAC will get RMII clock from outside at this GPIO.
*
* @note ESP32 only supports GPIO0 to input the RMII clock.
*
*/
EMAC_CLK_IN_GPIO = 0,
/**
* @brief Output RMII Clock from internal APLL Clock available at GPIO0
*
* @note GPIO0 can be set to output a pre-divided PLL clock (test only!). Enabling this option will configure GPIO0 to output a 50MHz clock.
* In fact this clock doesnt have directly relationship with EMAC peripheral. Sometimes this clock wont work well with your PHY chip.
* You might need to add some extra devices after GPIO0 (e.g. inverter). Note that outputting RMII clock on GPIO0 is an experimental practice.
* If you want the Ethernet to work with WiFi, dont select GPIO0 output mode for stability.
*
*/
EMAC_APPL_CLK_OUT_GPIO = 0,
/**
* @brief Output RMII Clock from internal APLL Clock available at GPIO16
*
*/
EMAC_CLK_OUT_GPIO = 16,
/**
* @brief Inverted Output RMII Clock from internal APLL Clock available at GPIO17
*
*/
EMAC_CLK_OUT_180_GPIO = 17
} emac_rmii_clock_gpio_t;
/**
* @brief Ethernet MAC Clock Configuration
*
*/
typedef union {
struct {
// MII interface is not fully implemented...
// Reserved for GPIO number, clock source, etc. in MII mode
} mii; /*!< EMAC MII Clock Configuration */
struct {
emac_rmii_clock_mode_t clock_mode; /*!< RMII Clock Mode Configuration */
emac_rmii_clock_gpio_t clock_gpio; /*!< RMII Clock GPIO Configuration */
} rmii; /*!< EMAC RMII Clock Configuration */
} eth_mac_clock_config_t;
/**
* @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 */
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 */
#define ETH_MAC_FLAG_PIN_TO_CORE (1 << 1) /*!< Pin MAC task to the CPU core where driver installation happened */
/**
* @brief Default configuration for Ethernet MAC object
*
*/
#define ETH_MAC_DEFAULT_CONFIG() \
{ \
.sw_reset_timeout_ms = 100, \
.rx_task_stack_size = 2048, \
.rx_task_prio = 15, \
.flags = 0, \
}
#if CONFIG_ETH_USE_ESP32_EMAC
/**
* @brief EMAC specific configuration
*
*/
typedef struct {
int smi_mdc_gpio_num; /*!< SMI MDC GPIO number, set to -1 could bypass the SMI GPIO configuration */
int smi_mdio_gpio_num; /*!< SMI MDIO GPIO number, set to -1 could bypass the SMI GPIO configuration */
eth_data_interface_t interface; /*!< EMAC Data interface to PHY (MII/RMII) */
eth_mac_clock_config_t clock_config; /*!< EMAC Interface clock configuration */
eth_mac_dma_burst_len_t dma_burst_len; /*!< EMAC DMA burst length for both Tx and Rx */
} eth_esp32_emac_config_t;
/**
* @brief Default ESP32's EMAC specific configuration
*
*/
#define ETH_ESP32_EMAC_DEFAULT_CONFIG() \
{ \
.smi_mdc_gpio_num = 23, \
.smi_mdio_gpio_num = 18, \
.interface = EMAC_DATA_INTERFACE_RMII, \
.clock_config = \
{ \
.rmii = \
{ \
.clock_mode = EMAC_CLK_DEFAULT, \
.clock_gpio = EMAC_CLK_IN_GPIO \
} \
}, \
.dma_burst_len = ETH_DMA_BURST_LEN_32 \
}
/**
* @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_esp32_emac_config_t *esp32_config, const eth_mac_config_t *config);
#endif // CONFIG_ETH_USE_ESP32_EMAC
#if CONFIG_ETH_SPI_ETHERNET_DM9051
/**
* @brief DM9051 specific configuration
*
*/
typedef struct {
void *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_SPI_ETHERNET_W5500
/**
* @brief W5500 specific configuration
*
*/
typedef struct {
void *spi_hdl; /*!< Handle of SPI device driver */
int int_gpio_num; /*!< Interrupt GPIO number */
} eth_w5500_config_t;
/**
* @brief Default W5500 specific configuration
*
*/
#define ETH_W5500_DEFAULT_CONFIG(spi_device) \
{ \
.spi_hdl = spi_device, \
.int_gpio_num = 4, \
}
/**
* @brief Create W5500 Ethernet MAC instance
*
* @param w5500_config: W5500 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_w5500(const eth_w5500_config_t *w5500_config, const eth_mac_config_t *mac_config);
#endif // CONFIG_ETH_SPI_ETHERNET_W5500
#if CONFIG_ETH_SPI_ETHERNET_KSZ8851SNL
/**
* @brief KSZ8851SNL specific configuration
*
*/
typedef struct {
void *spi_hdl; /*!< Handle of SPI device driver */
int int_gpio_num; /*!< Interrupt GPIO number */
} eth_ksz8851snl_config_t;
/**
* @brief Default KSZ8851SNL specific configuration
*
*/
#define ETH_KSZ8851SNL_DEFAULT_CONFIG(spi_device) \
{ \
.spi_hdl = spi_device, \
.int_gpio_num = 14, \
}
/**
* @brief Create KSZ8851SNL Ethernet MAC instance
*
* @param ksz8851snl_config: KSZ8851SNL 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_ksz8851snl(const eth_ksz8851snl_config_t *ksz8851snl_config, const eth_mac_config_t *mac_config);
#endif // CONFIG_ETH_SPI_ETHERNET_KSZ8851
#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