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https://github.com/espressif/esp-idf.git
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334 lines
14 KiB
C
334 lines
14 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include "esp_eth_com.h"
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#include "esp_eth_mac.h"
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#include "esp_eth_phy.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Handle of Ethernet driver
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*
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*/
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typedef void *esp_eth_handle_t;
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/**
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* @brief Configuration of Ethernet driver
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*
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*/
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typedef struct {
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/**
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* @brief Ethernet MAC object
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*
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*/
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esp_eth_mac_t *mac;
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/**
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* @brief Ethernet PHY object
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*
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*/
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esp_eth_phy_t *phy;
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/**
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* @brief Period time of checking Ethernet link status
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*
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*/
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uint32_t check_link_period_ms;
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/**
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* @brief Input frame buffer to user's stack
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*
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* @param[in] eth_handle: handle of Ethernet driver
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* @param[in] buffer: frame buffer that will get input to upper stack
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* @param[in] length: length of the frame buffer
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*
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* @return
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* - ESP_OK: input frame buffer to upper stack successfully
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* - ESP_FAIL: error occurred when inputting buffer to upper stack
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*
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*/
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esp_err_t (*stack_input)(esp_eth_handle_t eth_handle, uint8_t *buffer, uint32_t length, void *priv);
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/**
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* @brief Callback function invoked when lowlevel initialization is finished
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*
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* @param[in] eth_handle: handle of Ethernet driver
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*
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* @return
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* - ESP_OK: process extra lowlevel initialization successfully
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* - ESP_FAIL: error occurred when processing extra lowlevel initialization
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*/
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esp_err_t (*on_lowlevel_init_done)(esp_eth_handle_t eth_handle);
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/**
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* @brief Callback function invoked when lowlevel deinitialization is finished
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*
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* @param[in] eth_handle: handle of Ethernet driver
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*
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* @return
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* - ESP_OK: process extra lowlevel deinitialization successfully
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* - ESP_FAIL: error occurred when processing extra lowlevel deinitialization
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*/
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esp_err_t (*on_lowlevel_deinit_done)(esp_eth_handle_t eth_handle);
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/**
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* @brief Read PHY register
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*
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* @note Usually the PHY register read/write function is provided by MAC (SMI interface),
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* but if the PHY device is managed by other interface (e.g. I2C), then user needs to
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* implement the corresponding read/write.
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* Setting this to NULL means your PHY device is managed by MAC's SMI interface.
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*
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* @param[in] eth_handle: handle of Ethernet driver
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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_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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esp_err_t (*read_phy_reg)(esp_eth_handle_t eth_handle, 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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* @note Usually the PHY register read/write function is provided by MAC (SMI interface),
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* but if the PHY device is managed by other interface (e.g. I2C), then user needs to
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* implement the corresponding read/write.
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* Setting this to NULL means your PHY device is managed by MAC's SMI interface.
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*
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* @param[in] eth_handle: handle of Ethernet driver
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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_ARG: read PHY register failed because of invalid argument
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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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esp_err_t (*write_phy_reg)(esp_eth_handle_t eth_handle, uint32_t phy_addr, uint32_t phy_reg, uint32_t reg_value);
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} esp_eth_config_t;
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/**
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* @brief Command list for ioctl API
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*
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*/
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typedef enum {
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ETH_CMD_G_MAC_ADDR, /*!< Get MAC address */
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ETH_CMD_S_MAC_ADDR, /*!< Set MAC address */
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ETH_CMD_G_PHY_ADDR, /*!< Get PHY address */
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ETH_CMD_S_PHY_ADDR, /*!< Set PHY address */
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ETH_CMD_G_AUTONEGO, /*!< Get PHY Auto Negotiation */
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ETH_CMD_S_AUTONEGO, /*!< Set PHY Auto Negotiation */
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ETH_CMD_G_SPEED, /*!< Get Speed */
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ETH_CMD_S_SPEED, /*!< Set Speed */
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ETH_CMD_S_PROMISCUOUS, /*!< Set promiscuous mode */
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ETH_CMD_S_FLOW_CTRL, /*!< Set flow control */
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ETH_CMD_G_DUPLEX_MODE, /*!< Get Duplex mode */
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ETH_CMD_S_DUPLEX_MODE, /*!< Set Duplex mode */
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ETH_CMD_S_PHY_LOOPBACK, /*!< Set PHY loopback */
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ETH_CMD_CUSTOM_MAC_CMDS = 0x0FFF, // Offset for start of MAC custom commands
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ETH_CMD_CUSTOM_PHY_CMDS = 0x1FFF, // Offset for start of PHY custom commands
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} esp_eth_io_cmd_t;
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/**
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* @brief Default configuration for Ethernet driver
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*
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*/
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#define ETH_DEFAULT_CONFIG(emac, ephy) \
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{ \
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.mac = emac, \
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.phy = ephy, \
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.check_link_period_ms = 2000, \
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.stack_input = NULL, \
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.on_lowlevel_init_done = NULL, \
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.on_lowlevel_deinit_done = NULL, \
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.read_phy_reg = NULL, \
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.write_phy_reg = NULL, \
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}
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/**
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* @brief Install Ethernet driver
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*
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* @param[in] config: configuration of the Ethernet driver
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* @param[out] out_hdl: handle of Ethernet driver
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*
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* @return
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* - ESP_OK: install esp_eth driver successfully
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* - ESP_ERR_INVALID_ARG: install esp_eth driver failed because of some invalid argument
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* - ESP_ERR_NO_MEM: install esp_eth driver failed because there's no memory for driver
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* - ESP_FAIL: install esp_eth driver failed because some other error occurred
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*/
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esp_err_t esp_eth_driver_install(const esp_eth_config_t *config, esp_eth_handle_t *out_hdl);
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/**
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* @brief Uninstall Ethernet driver
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* @note It's not recommended to uninstall Ethernet driver unless it won't get used any more in application code.
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* To uninstall Ethernet driver, you have to make sure, all references to the driver are released.
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* Ethernet driver can only be uninstalled successfully when reference counter equals to one.
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*
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* @param[in] hdl: handle of Ethernet driver
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*
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* @return
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* - ESP_OK: uninstall esp_eth driver successfully
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* - ESP_ERR_INVALID_ARG: uninstall esp_eth driver failed because of some invalid argument
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* - ESP_ERR_INVALID_STATE: uninstall esp_eth driver failed because it has more than one reference
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* - ESP_FAIL: uninstall esp_eth driver failed because some other error occurred
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*/
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esp_err_t esp_eth_driver_uninstall(esp_eth_handle_t hdl);
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/**
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* @brief Start Ethernet driver **ONLY** in standalone mode (i.e. without TCP/IP stack)
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*
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* @note This API will start driver state machine and internal software timer (for checking link status).
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*
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* @param[in] hdl handle of Ethernet driver
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*
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* @return
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* - ESP_OK: start esp_eth driver successfully
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* - ESP_ERR_INVALID_ARG: start esp_eth driver failed because of some invalid argument
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* - ESP_ERR_INVALID_STATE: start esp_eth driver failed because driver has started already
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* - ESP_FAIL: start esp_eth driver failed because some other error occurred
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*/
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esp_err_t esp_eth_start(esp_eth_handle_t hdl);
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/**
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* @brief Stop Ethernet driver
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*
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* @note This function does the oppsite operation of `esp_eth_start`.
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*
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* @param[in] hdl handle of Ethernet driver
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* @return
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* - ESP_OK: stop esp_eth driver successfully
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* - ESP_ERR_INVALID_ARG: stop esp_eth driver failed because of some invalid argument
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* - ESP_ERR_INVALID_STATE: stop esp_eth driver failed because driver has not started yet
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* - ESP_FAIL: stop esp_eth driver failed because some other error occurred
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*/
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esp_err_t esp_eth_stop(esp_eth_handle_t hdl);
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/**
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* @brief Update Ethernet data input path (i.e. specify where to pass the input buffer)
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*
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* @note After install driver, Ethernet still don't know where to deliver the input buffer.
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* In fact, this API registers a callback function which get invoked when Ethernet received new packets.
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*
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* @param[in] hdl handle of Ethernet driver
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* @param[in] stack_input function pointer, which does the actual process on incoming packets
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* @param[in] priv private resource, which gets passed to `stack_input` callback without any modification
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* @return
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* - ESP_OK: update input path successfully
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* - ESP_ERR_INVALID_ARG: update input path failed because of some invalid argument
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* - ESP_FAIL: update input path failed because some other error occurred
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*/
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esp_err_t esp_eth_update_input_path(
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esp_eth_handle_t hdl,
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esp_err_t (*stack_input)(esp_eth_handle_t hdl, uint8_t *buffer, uint32_t length, void *priv),
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void *priv);
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/**
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* @brief General Transmit
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*
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* @param[in] hdl: handle of Ethernet driver
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* @param[in] buf: buffer of the packet to transfer
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* @param[in] length: length of the buffer to transfer
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*
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* @return
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* - ESP_OK: transmit frame buffer successfully
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* - ESP_ERR_INVALID_ARG: transmit frame buffer failed because of some invalid argument
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* - ESP_ERR_INVALID_STATE: invalid driver state (e.i. driver is not started)
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* - ESP_ERR_TIMEOUT: transmit frame buffer failed because HW was not get available in predefined period
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* - ESP_FAIL: transmit frame buffer failed because some other error occurred
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*/
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esp_err_t esp_eth_transmit(esp_eth_handle_t hdl, void *buf, size_t length);
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/**
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* @brief Special Transmit with variable number of arguments
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*
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* @param[in] hdl handle of Ethernet driver
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* @param[in] argc number variable arguments
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* @param ... variable arguments
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* @return
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* - ESP_OK: transmit successfull
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* - ESP_ERR_INVALID_STATE: invalid driver state (e.i. driver is not started)
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* - ESP_ERR_TIMEOUT: transmit frame buffer failed because HW was not get available in predefined period
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* - ESP_FAIL: transmit frame buffer failed because some other error occurred
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*/
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esp_err_t esp_eth_transmit_vargs(esp_eth_handle_t hdl, uint32_t argc, ...);
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/**
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* @brief Misc IO function of Etherent driver
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*
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* @param[in] hdl: handle of Ethernet driver
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* @param[in] cmd: IO control command
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* @param[in, out] data: address of data for `set` command or address where to store the data when used with `get` command
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*
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* @return
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* - ESP_OK: process io command successfully
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* - ESP_ERR_INVALID_ARG: process io command failed because of some invalid argument
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* - ESP_FAIL: process io command failed because some other error occurred
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* - ESP_ERR_NOT_SUPPORTED: requested feature is not supported
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*
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* The following common IO control commands are supported:
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* @li @c ETH_CMD_S_MAC_ADDR sets Ethernet interface MAC address. @c data argument is pointer to MAC address buffer with expected size of 6 bytes.
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* @li @c ETH_CMD_G_MAC_ADDR gets Ethernet interface MAC address. @c data argument is pointer to a buffer to which MAC address is to be copied. The buffer size must be at least 6 bytes.
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* @li @c ETH_CMD_S_PHY_ADDR sets PHY address in range of <0-31>. @c data argument is pointer to memory of uint32_t datatype from where the configuration option is read.
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* @li @c ETH_CMD_G_PHY_ADDR gets PHY address. @c data argument is pointer to memory of uint32_t datatype to which the PHY address is to be stored.
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* @li @c ETH_CMD_S_AUTONEGO enables or disables Ethernet link speed and duplex mode autonegotiation. @c data argument is pointer to memory of bool datatype from which the configuration option is read.
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* Preconditions: Ethernet driver needs to be stopped.
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* @li @c ETH_CMD_G_AUTONEGO gets current configuration of the Ethernet link speed and duplex mode autonegotiation. @c data argument is pointer to memory of bool datatype to which the current configuration is to be stored.
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* @li @c ETH_CMD_S_SPEED sets the Ethernet link speed. @c data argument is pointer to memory of eth_speed_t datatype from which the configuration option is read.
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* Preconditions: Ethernet driver needs to be stopped and auto-negotiation disabled.
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* @li @c ETH_CMD_G_SPEED gets current Ethernet link speed. @c data argument is pointer to memory of eth_speed_t datatype to which the speed is to be stored.
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* @li @c ETH_CMD_S_PROMISCUOUS sets/resets Ethernet interface promiscuous mode. @c data argument is pointer to memory of bool datatype from which the configuration option is read.
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* @li @c ETH_CMD_S_FLOW_CTRL sets/resets Ethernet interface flow control. @c data argument is pointer to memory of bool datatype from which the configuration option is read.
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* @li @c ETH_CMD_S_DUPLEX_MODE sets the Ethernet duplex mode. @c data argument is pointer to memory of eth_duplex_t datatype from which the configuration option is read.
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* Preconditions: Ethernet driver needs to be stopped and auto-negotiation disabled.
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* @li @c ETH_CMD_G_DUPLEX_MODE gets current Ethernet link duplex mode. @c data argument is pointer to memory of eth_duplex_t datatype to which the duplex mode is to be stored.
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* @li @c ETH_CMD_S_PHY_LOOPBACK sets/resets PHY to/from loopback mode. @c data argument is pointer to memory of bool datatype from which the configuration option is read.
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*
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* @li Note that additional control commands may be available for specific MAC or PHY chips. Please consult specific MAC or PHY documentation or driver code.
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*/
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esp_err_t esp_eth_ioctl(esp_eth_handle_t hdl, esp_eth_io_cmd_t cmd, void *data);
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/**
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* @brief Increase Ethernet driver reference
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* @note Ethernet driver handle can be obtained by os timer, netif, etc.
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* It's dangerous when thread A is using Ethernet but thread B uninstall the driver.
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* Using reference counter can prevent such risk, but care should be taken, when you obtain Ethernet driver,
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* this API must be invoked so that the driver won't be uninstalled during your using time.
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*
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*
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* @param[in] hdl: handle of Ethernet driver
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* @return
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* - ESP_OK: increase reference successfully
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* - ESP_ERR_INVALID_ARG: increase reference failed because of some invalid argument
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*/
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esp_err_t esp_eth_increase_reference(esp_eth_handle_t hdl);
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/**
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* @brief Decrease Ethernet driver reference
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*
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* @param[in] hdl: handle of Ethernet driver
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* @return
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* - ESP_OK: increase reference successfully
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* - ESP_ERR_INVALID_ARG: increase reference failed because of some invalid argument
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*/
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esp_err_t esp_eth_decrease_reference(esp_eth_handle_t hdl);
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#ifdef __cplusplus
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}
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#endif
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