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stm32-bsp-eth-dhcp-files.patch
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stm32-bsp-eth-dhcp-files.patch
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From af0c1609df44eeafb3f39f8fe64c85c07a0c7ef3 Mon Sep 17 00:00:00 2001
From: Robin Mueller <[email protected]>
Date: Sun, 24 Oct 2021 12:38:42 +0200
Subject: [PATCH] Added STM32 files which are added via patch
---
lwip/ports/drivers/stm32h7/app_dhcp.c | 208 +++++
lwip/ports/drivers/stm32h7/app_ethernet.c | 191 +++++
lwip/ports/drivers/stm32h7/ethernetif.c | 748 ++++++++++++++++++
.../stm32h7/include/rtems_lwip/app_dhcp.h | 51 ++
.../stm32h7/include/rtems_lwip/app_ethernet.h | 64 ++
.../stm32h7/include/rtems_lwip/ethernetif.h | 59 ++
6 files changed, 1321 insertions(+)
create mode 100644 lwip/ports/drivers/stm32h7/app_dhcp.c
create mode 100644 lwip/ports/drivers/stm32h7/app_ethernet.c
create mode 100644 lwip/ports/drivers/stm32h7/ethernetif.c
create mode 100644 lwip/ports/drivers/stm32h7/include/rtems_lwip/app_dhcp.h
create mode 100644 lwip/ports/drivers/stm32h7/include/rtems_lwip/app_ethernet.h
create mode 100644 lwip/ports/drivers/stm32h7/include/rtems_lwip/ethernetif.h
diff --git a/lwip/ports/drivers/stm32h7/app_dhcp.c b/lwip/ports/drivers/stm32h7/app_dhcp.c
new file mode 100644
index 0000000..0685670
--- /dev/null
+++ b/lwip/ports/drivers/stm32h7/app_dhcp.c
@@ -0,0 +1,208 @@
+/* Includes ------------------------------------------------------------------*/
+#include "app_dhcp.h"
+#include "port_conf.h"
+#include "ethernetif.h"
+#include "stm32h7xx_hal.h"
+#include "lwip/opt.h"
+#include "lwip/dhcp.h"
+#include "lwip/ip_addr.h"
+#include "rtems_lwip.h"
+#include "rtems_lwip_conf.h"
+
+#if NO_SYS == 0
+#include "lwip/sys.h"
+#endif
+#include <sys/unistd.h>
+
+#if LWIP_DHCP
+#ifndef MAX_DHCP_TRIES
+#define MAX_DHCP_TRIES 4
+#endif /* MAX_DHCP_TRIES */
+
+
+#if NO_SYS == 1
+static uint32_t DHCPfineTimer = 0;
+
+#endif /* NO_SYS == 1*/
+
+static void dhcp_thread(void* argument);
+
+LwipThreadArgs dhcp_args;
+uint8_t DHCP_state = DHCP_START;
+
+#if NO_SYS == 0
+void rtems_lwip_start_dhcp_thread(uint32_t task_interval_ms,
+ size_t task_stack, uint8_t task_priority) {
+ dhcp_args.netif = rtems_lwip_get_netif(0);
+ dhcp_args.task_interval_ms = task_interval_ms;
+ sys_thread_new("DHCP", dhcp_thread, (void*) &dhcp_args, task_stack, task_priority);
+}
+#endif /* NO_SYS == 0 */
+
+/**
+ * @brief This is the thread dedicated to DHCP handling
+ * @param argument: network interface
+ * @retval None
+ */
+void dhcp_thread(void* argument)
+{
+ ip_addr_t ipaddr;
+ ip_addr_t netmask;
+ ip_addr_t gw;
+ struct dhcp *dhcp = NULL;
+ LwipThreadArgs* args = (LwipThreadArgs*) argument;
+ if(args == NULL) {
+ printf("dhcp_thread: Passed arguments are invalid!\n\r");
+ exit(1);
+ }
+
+ struct netif* netif = args->netif;
+ if(netif == NULL) {
+ printf("dhcp_thread: Passed netif is invalid!\n\r");
+ exit(1);
+ }
+
+ if(args->task_interval_ms == 0) {
+ printf("dhcp_thread: Invalid task interval!\n\r");
+ exit(1);
+ }
+
+ for (;;) {
+ switch (DHCP_state) {
+ case DHCP_START: {
+ ip_addr_set_zero_ip4(&netif->ip_addr);
+ ip_addr_set_zero_ip4(&netif->netmask);
+ ip_addr_set_zero_ip4(&netif->gw);
+ DHCP_state = DHCP_WAIT_ADDRESS;
+
+ dhcp_start(netif);
+ }
+ break;
+ case DHCP_WAIT_ADDRESS: {
+ if (dhcp_supplied_address(netif)) {
+ DHCP_state = DHCP_ADDRESS_ASSIGNED;
+#if RTEMS_LWIP_DHCP_PRINTOUT == 1
+ printf("IP address assigned by a DHCP server: %s\n\r",
+ ip4addr_ntoa(netif_ip4_addr(netif)));
+#endif
+ }
+ else {
+ dhcp = (struct dhcp *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP);
+
+ /* DHCP timeout */
+ if (dhcp->tries > MAX_DHCP_TRIES) {
+ DHCP_state = DHCP_TIMEOUT;
+#if RTEMS_LWIP_DHCP_PRINTOUT == 1
+ uint8_t iptxt[20];
+ sprintf((char *)iptxt, "%s", ip4addr_ntoa(netif_ip4_addr(netif)));
+ printf("DHCP timeout\n\r");
+ printf("Setting static IP address %s..\n\r", iptxt);
+#endif
+ /* Static address used */
+ rtems_lwip_determine_static_ipv4_address(&ipaddr, &netmask, &gw);
+ netif_set_addr(netif, ip_2_ip4(&ipaddr), ip_2_ip4(&netmask), ip_2_ip4(&gw));
+ }
+ }
+ }
+ break;
+ case DHCP_LINK_DOWN: {
+ DHCP_state = DHCP_OFF;
+ }
+ break;
+ default: break;
+ }
+
+ usleep(args->task_interval_ms * 1000);
+ }
+}
+
+#if NO_SYS == 1
+
+void DHCP_Process(struct netif *netif);
+
+/**
+ * @brief DHCP periodic check
+ * @param netif
+ * @retval None
+ */
+void dhcp_periodic_handle(struct netif *netif)
+{
+ /* Fine DHCP periodic process every 500ms */
+ if (HAL_GetTick() - DHCPfineTimer >= RTEMS_LWIP_DHCP_TASK_INTERVAL_MS) {
+ DHCPfineTimer = HAL_GetTick();
+ /* process DHCP state machine */
+ DHCP_Process(netif);
+ }
+}
+
+/**
+ * @brief DHCP_Process_Handle
+ * @param None
+ * @retval None
+ */
+void DHCP_Process(struct netif *netif)
+{
+ ip_addr_t ipaddr;
+ ip_addr_t netmask;
+ ip_addr_t gw;
+ struct dhcp *dhcp = NULL;
+ switch (DHCP_state) {
+ case DHCP_START: {
+ ip_addr_set_zero_ip4(&netif->ip_addr);
+ ip_addr_set_zero_ip4(&netif->netmask);
+ ip_addr_set_zero_ip4(&netif->gw);
+ dhcp_start(netif);
+ DHCP_state = DHCP_WAIT_ADDRESS;
+ }
+ break;
+
+ case DHCP_WAIT_ADDRESS: {
+ if (dhcp_supplied_address(netif)) {
+ DHCP_state = DHCP_ADDRESS_ASSIGNED;
+ printf("IP address assigned by a DHCP server: %s\n\r", ip4addr_ntoa(netif_ip4_addr(netif)));
+ }
+ else
+ {
+ dhcp = (struct dhcp *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP);
+
+ /* DHCP timeout */
+ if (dhcp->tries > MAX_DHCP_TRIES)
+ {
+ DHCP_state = DHCP_TIMEOUT;
+
+ uint8_t iptxt[20];
+ sprintf((char *)iptxt, "%s", ip4addr_ntoa(netif_ip4_addr(netif)));
+ printf("DHCP timeout\n\r");
+ printf("Setting static IP address %s..\n\r", iptxt);
+ /* Static address used */
+ rtems_lwip_determine_static_ipv4_address(&ipaddr, &netmask, &gw);
+ netif_set_addr(netif, &ipaddr, &netmask, &gw);
+
+ }
+ }
+ }
+ break;
+ case DHCP_LINK_DOWN: {
+ /* Stop DHCP */
+ //dhcp_release_and_stop(netif);
+ DHCP_state = DHCP_OFF;
+ }
+ break;
+ default: break;
+ }
+}
+
+#endif /* NO_SYS == 1 */
+
+void set_dhcp_state(uint8_t new_state)
+{
+ DHCP_state = new_state;
+}
+
+uint8_t get_dhcp_state()
+{
+ return DHCP_state;
+}
+
+#endif /* LWIP_DHCP */
+
diff --git a/lwip/ports/drivers/stm32h7/app_ethernet.c b/lwip/ports/drivers/stm32h7/app_ethernet.c
new file mode 100644
index 0000000..0536886
--- /dev/null
+++ b/lwip/ports/drivers/stm32h7/app_ethernet.c
@@ -0,0 +1,191 @@
+/**
+ ******************************************************************************
+ * @file LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/app_ethernet.c
+ * @author MCD Application Team
+ * @brief Ethernet specefic module
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* Includes ------------------------------------------------------------------*/
+#include "rtems_lwip_conf.h"
+#include "rtems_lwip.h"
+#include "stm32h7/lan8742.h"
+#include "stm32h7xx_hal.h"
+#include "lwip/opt.h"
+#if LWIP_DHCP
+#include "lwip/dhcp.h"
+#endif
+
+#if NO_SYS == 0
+#include "lwip/sys.h"
+#endif
+
+#include "app_ethernet.h"
+#include "app_dhcp.h"
+#include "ethernetif.h"
+
+/* Private typedef -----------------------------------------------------------*/
+LwipThreadArgs linkArgs;
+
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+#if NO_SYS == 1
+uint32_t ethernet_link_timer = 0;
+#endif
+
+/* Private function prototypes -----------------------------------------------*/
+#if LWIP_DHCP
+void set_dhcp_state(uint8_t new_state);
+#endif
+static void ethernet_link_thread( void* argument );
+lan8742_Object_t* get_lan_phy_handle();
+ETH_HandleTypeDef* get_eth_handle();
+
+/* Private functions ---------------------------------------------------------*/
+/**
+ * @brief Notify the User about the nework interface config status
+ * @param netif: the network interface
+ * @retval None
+ */
+void ethernet_link_status_updated(struct netif *netif)
+{
+ if (netif_is_up(netif)) {
+#if LWIP_DHCP
+ printf("Ethernet link up. Setting DHCP state..\n\r");
+ /* Update DHCP state machine */
+ set_dhcp_state(DHCP_START);
+#endif /* LWIP_DHCP */
+ }
+ else {
+#if LWIP_DHCP
+ printf("Ethernet link down. Setting DHCP state..\n\r");
+ /* Update DHCP state machine */
+ set_dhcp_state(DHCP_LINK_DOWN);
+#endif /* LWIP_DHCP */
+ }
+}
+
+#if LWIP_NETIF_LINK_CALLBACK == 1 && NO_SYS == 1
+/**
+ * @brief Ethernet Link periodic check
+ * @param netif
+ * @retval None
+ */
+void ethernet_link_periodic_handle(struct netif *netif)
+{
+ uint32_t time_now = HAL_GetTick();
+ /* Ethernet Link every 100ms */
+ if (time_now - ethernet_link_timer >= 100) {
+ ethernet_link_timer = time_now;
+ ethernet_link_check_state(netif);
+ }
+}
+#endif
+
+#if NO_SYS == 0
+
+void rtems_lwip_start_link_thread(uint32_t task_interval_ms,
+ size_t task_stack, uint8_t task_priority) {
+ linkArgs.netif = rtems_lwip_get_netif(0);
+ linkArgs.task_interval_ms = task_interval_ms;
+ sys_thread_new("LINK", ethernet_link_thread, (void*) &linkArgs, task_stack, task_priority);
+}
+
+#endif
+
+/**
+ * @brief Check the ETH link state and update netif accordingly.
+ * @param argument: netif
+ * @retval None
+ */
+void ethernet_link_thread( void* argument )
+{
+ ETH_MACConfigTypeDef MACConf;
+ int32_t PHYLinkState;
+ uint32_t linkchanged = 0, speed = 0, duplex =0;
+ LwipThreadArgs* args = (LwipThreadArgs*) argument;
+ if(args == NULL) {
+ printf("ethernet_link_thread: Passed arguments are invalid!\n\r");
+ exit(1);
+ }
+
+ struct netif *netif = args->netif;
+ if(netif == NULL) {
+ printf("ethernet_link_thread: Passed netif is invalid!\n\r");
+ exit(1);
+ }
+
+ if(args->task_interval_ms == 0) {
+ printf("ethernet_link_thread: Invalid task interval!\n\r");
+ exit(1);
+ }
+
+ lan8742_Object_t* lan = get_lan_phy_handle();
+ ETH_HandleTypeDef* eth = get_eth_handle();
+ for(;;) {
+
+ PHYLinkState = LAN8742_GetLinkState(lan);
+
+ if(netif_is_link_up(netif) && (PHYLinkState <= LAN8742_STATUS_LINK_DOWN)) {
+ HAL_ETH_Stop_IT(eth);
+ netif_set_down(netif);
+ netif_set_link_down(netif);
+ }
+ else if(!netif_is_link_up(netif) && (PHYLinkState > LAN8742_STATUS_LINK_DOWN)) {
+ switch (PHYLinkState) {
+ case LAN8742_STATUS_100MBITS_FULLDUPLEX: {
+ duplex = ETH_FULLDUPLEX_MODE;
+ speed = ETH_SPEED_100M;
+ linkchanged = 1;
+ break;
+ }
+ case LAN8742_STATUS_100MBITS_HALFDUPLEX: {
+ duplex = ETH_HALFDUPLEX_MODE;
+ speed = ETH_SPEED_100M;
+ linkchanged = 1;
+ break;
+ }
+ case LAN8742_STATUS_10MBITS_FULLDUPLEX: {
+ duplex = ETH_FULLDUPLEX_MODE;
+ speed = ETH_SPEED_10M;
+ linkchanged = 1;
+ break;
+ }
+ case LAN8742_STATUS_10MBITS_HALFDUPLEX: {
+ duplex = ETH_HALFDUPLEX_MODE;
+ speed = ETH_SPEED_10M;
+ linkchanged = 1;
+ break;
+ }
+ default:
+ break;
+ }
+
+ if(linkchanged) {
+ /* Get MAC Config MAC */
+ HAL_ETH_GetMACConfig(eth, &MACConf);
+ MACConf.DuplexMode = duplex;
+ MACConf.Speed = speed;
+ HAL_ETH_SetMACConfig(eth, &MACConf);
+ HAL_ETH_Start_IT(eth);
+ netif_set_up(netif);
+ netif_set_link_up(netif);
+ }
+ }
+
+ usleep(args->task_interval_ms * 1000);
+ }
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/lwip/ports/drivers/stm32h7/ethernetif.c b/lwip/ports/drivers/stm32h7/ethernetif.c
new file mode 100644
index 0000000..61014df
--- /dev/null
+++ b/lwip/ports/drivers/stm32h7/ethernetif.c
@@ -0,0 +1,748 @@
+/**
+ ******************************************************************************
+ * @file LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/ethernetif.c
+ * @author MCD Application Team
+ * @brief This file implements Ethernet network interface drivers for lwIP
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_hal.h"
+#include "port_conf.h"
+#include "lwip/timeouts.h"
+#include "netif/ethernet.h"
+#include "netif/etharp.h"
+#include "lwip/stats.h"
+#include "lwip/snmp.h"
+#include "lwip/tcpip.h"
+#include "ethernetif.h"
+
+#include "lan8742.h"
+#include <string.h>
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define DMA_DESCRIPTOR_ALIGNMENT ( 0x20 )
+
+/* Define those to better describe your network interface. */
+#define IFNAME0 's'
+#define IFNAME1 't'
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/*
+@Note: This interface is implemented to operate in zero-copy mode only:
+ - Rx buffers are allocated statically and passed directly to the LwIP stack,
+ they will return back to ETH DMA after been processed by the stack.
+ - Tx Buffers will be allocated from LwIP stack memory heap,
+ then passed to ETH HAL driver.
+
+@Notes:
+ 1.a. ETH DMA Rx descriptors must be contiguous, the default count is 4,
+ to customize it please redefine ETH_RX_DESC_CNT in stm32xxxx_hal_conf.h
+ 1.b. ETH DMA Tx descriptors must be contiguous, the default count is 4,
+ to customize it please redefine ETH_TX_DESC_CNT in stm32xxxx_hal_conf.h
+
+ 2.a. Rx Buffers number must be between ETH_RX_DESC_CNT and 2*ETH_RX_DESC_CNT
+ 2.b. Rx Buffers must have the same size: ETH_RX_BUFFER_SIZE, this value must
+ passed to ETH DMA in the init field (EthHandle.Init.RxBuffLen)
+ 2.c The RX Ruffers addresses and sizes must be properly defined to be aligned
+ to L1-CACHE line size (32 bytes).
+*/
+
+#ifdef __rtems__
+netif_init_fn eth_lwip_init_fnc = ðernetif_init;
+
+/* Put into special RTEMS section and align correctly */
+ETH_DMADescTypeDef DMARxDscrTab[ETH_RX_DESC_CNT] __attribute__((section(".bsp_nocache"), __aligned__(DMA_DESCRIPTOR_ALIGNMENT))); /* Ethernet Rx DMA Descriptors */
+/* Put into special RTEMS section and align correctly */
+ETH_DMADescTypeDef DMATxDscrTab[ETH_TX_DESC_CNT] __attribute__((section(".bsp_nocache"), __aligned__(DMA_DESCRIPTOR_ALIGNMENT))); /* Ethernet Tx DMA Descriptors */
+/* Ethernet Receive Buffers. Just place somewhere is BSS instead of explicitely placing it */
+uint8_t Rx_Buff[ETH_RX_DESC_CNT][ETH_RX_BUFFER_SIZE] RTEMS_ALIGNED(DMA_DESCRIPTOR_ALIGNMENT);
+#endif /* __rtems__ */
+
+ETH_HandleTypeDef EthHandle;
+ETH_TxPacketConfig TxConfig;
+
+lan8742_Object_t LAN8742;
+
+#if NO_SYS == 0
+sys_sem_t RxPktSemaphore; /* Semaphore to signal incoming packets */
+#endif
+
+/* Private function prototypes -----------------------------------------------*/
+#if !STATIC_IP_ADDRESS && NO_SYS == 0 && LWIP_NETIF_API == 1
+void set_dhcp_state(uint8_t new_state);
+#endif
+
+uint8_t determine_mpu_region_size_select(size_t lwip_heap_size);
+static void low_level_init(struct netif *netif);
+static err_t low_level_output(struct netif *netif, struct pbuf *p);
+void ethernet_link_check_state(struct netif *netif);
+
+void pbuf_free_custom(struct pbuf *p);
+
+int32_t ETH_PHY_IO_Init(void);
+int32_t ETH_PHY_IO_DeInit (void);
+int32_t ETH_PHY_IO_ReadReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t *pRegVal);
+int32_t ETH_PHY_IO_WriteReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t RegVal);
+int32_t ETH_PHY_IO_GetTick(void);
+
+
+lan8742_IOCtx_t LAN8742_IOCtx = {ETH_PHY_IO_Init,
+ ETH_PHY_IO_DeInit,
+ ETH_PHY_IO_WriteReg,
+ ETH_PHY_IO_ReadReg,
+ ETH_PHY_IO_GetTick};
+
+LWIP_MEMPOOL_DECLARE(RX_POOL, 10, sizeof(struct pbuf_custom), "Zero-copy RX PBUF pool");
+
+/* Private functions ---------------------------------------------------------*/
+/*******************************************************************************
+ LL Driver Interface ( LwIP stack --> ETH)
+*******************************************************************************/
+
+/**
+ * @brief Should be called at the beginning of the program to set up the
+ * network interface. It calls the function low_level_init() to do the
+ * actual setup of the hardware.
+ *
+ * This function should be passed as a parameter to netif_add().
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @return ERR_OK if the loopif is initialized
+ * ERR_MEM if private data couldn't be allocated
+ * any other err_t on error
+ */
+err_t ethernetif_init(struct netif *netif)
+{
+ LWIP_ASSERT("netif != NULL", (netif != NULL));
+
+#ifdef __rtems__
+#if RTEMS_LWIP_PROTECT_LWIP_HEAP_WITH_MPU == 1
+ mpu_config_tx_buffers(LWIP_RAM_HEAP_POINTER, MEM_SIZE);
+#endif /* RTEMS_LWIP_PROTECT_LWIP_HEAP_WITH_MPU == 1 */
+#endif /* __rtems__ */
+
+#if LWIP_NETIF_HOSTNAME
+ /* Initialize interface hostname */
+ netif->hostname = "lwip";
+#endif /* LWIP_NETIF_HOSTNAME */
+
+#if NO_SYS == 0
+ /*
+ * Initialize the snmp variables and counters inside the struct netif.
+ * The last argument should be replaced with your link speed, in units
+ * of bits per second.
+ */
+ MIB2_INIT_NETIF(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);
+#endif
+
+ netif->name[0] = IFNAME0;
+ netif->name[1] = IFNAME1;
+
+ /* We directly use etharp_output() here to save a function call.
+ * You can instead declare your own function an call etharp_output()
+ * from it if you have to do some checks before sending (e.g. if link
+ * is available...) */
+ netif->output = etharp_output;
+ netif->linkoutput = low_level_output;
+
+ /* This is already done by the generic driver, so the internal state machine is set accordingly */
+#if !STATIC_IP_ADDRESS && NO_SYS == 0 && LWIP_NETIF_API == 1
+ set_dhcp_state(DHCP_WAIT_ADDRESS);
+#endif
+
+ /* initialize the hardware */
+ low_level_init(netif);
+
+ return ERR_OK;
+}
+
+/**
+ * @brief In this function, the hardware should be initialized.
+ * Called from ethernetif_init().
+ *
+ * @param netif the already initialized lwip network interface structure
+ * for this ethernetif
+ */
+static void low_level_init(struct netif *netif)
+{
+#if NO_SYS == 0
+ int32_t PHYLinkState;
+ ETH_MACConfigTypeDef MACConf;
+ uint32_t duplex, speed = 0;
+#endif
+ uint32_t idx = 0;
+ uint8_t macaddress[6]= {ETH_MAC_ADDR0, ETH_MAC_ADDR1, ETH_MAC_ADDR2, ETH_MAC_ADDR3, ETH_MAC_ADDR4, ETH_MAC_ADDR5};
+
+ EthHandle.Instance = ETH;
+ EthHandle.Init.MACAddr = macaddress;
+ EthHandle.Init.MediaInterface = HAL_ETH_RMII_MODE;
+ EthHandle.Init.RxDesc = DMARxDscrTab;
+ EthHandle.Init.TxDesc = DMATxDscrTab;
+ EthHandle.Init.RxBuffLen = ETH_RX_BUFFER_SIZE;
+
+ /* configure ethernet peripheral (GPIOs, clocks, MAC, DMA) */
+ HAL_ETH_Init(&EthHandle);
+
+#if NO_SYS == 0
+ /* Enable the Ethernet global Interrupt */
+ HAL_NVIC_SetPriority(ETH_IRQn, 0x7, 0);
+ HAL_NVIC_EnableIRQ(ETH_IRQn);
+#endif
+
+ /* set MAC hardware address length */
+ netif->hwaddr_len = ETH_HWADDR_LEN;
+
+ /* set MAC hardware address */
+ netif->hwaddr[0] = ETH_MAC_ADDR0;
+ netif->hwaddr[1] = ETH_MAC_ADDR1;
+ netif->hwaddr[2] = ETH_MAC_ADDR2;
+ netif->hwaddr[3] = ETH_MAC_ADDR3;
+ netif->hwaddr[4] = ETH_MAC_ADDR4;
+ netif->hwaddr[5] = ETH_MAC_ADDR5;
+
+ /* maximum transfer unit */
+ netif->mtu = ETH_MAX_PAYLOAD;
+
+ /* device capabilities */
+ /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
+ netif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
+
+ for(idx = 0; idx < ETH_RX_DESC_CNT; idx ++)
+ {
+ HAL_ETH_DescAssignMemory(&EthHandle, idx, Rx_Buff[idx], NULL);
+ }
+
+ /* Initialize the RX POOL */
+ LWIP_MEMPOOL_INIT(RX_POOL);
+
+ memset(&TxConfig, 0 , sizeof(ETH_TxPacketConfig));
+ TxConfig.Attributes = ETH_TX_PACKETS_FEATURES_CSUM | ETH_TX_PACKETS_FEATURES_CRCPAD;
+ TxConfig.ChecksumCtrl = ETH_CHECKSUM_IPHDR_PAYLOAD_INSERT_PHDR_CALC;
+ TxConfig.CRCPadCtrl = ETH_CRC_PAD_INSERT;
+
+#ifdef __rtems__
+#if NO_SYS == 0
+ /* create a binary semaphore used for informing ethernetif of frame reception */
+ sys_sem_new(&RxPktSemaphore, 1);
+
+ /* create the task that handles the ETH_MAC */
+ sys_thread_new(
+ "ETHM",
+ (lwip_thread_fn) ethernetif_input,
+ netif,
+ RTEMS_LWIP_INTERFACE_THREAD_STACK_SIZE,
+ RTEMS_LWIP_INTERFACE_THREAD_PRIORITY
+ );
+#endif /* NO_SYS == 0 */
+#endif /* __rtems__ */
+
+ /* Set PHY IO functions */
+ LAN8742_RegisterBusIO(&LAN8742, &LAN8742_IOCtx);
+
+ /* Initialize the LAN8742 ETH PHY */
+ LAN8742_Init(&LAN8742);
+
+#if NO_SYS == 0
+ PHYLinkState = LAN8742_GetLinkState(&LAN8742);
+
+ /* Get link state */
+ if(PHYLinkState <= LAN8742_STATUS_LINK_DOWN)
+ {
+ netif_set_link_down(netif);
+ netif_set_down(netif);
+ }
+ else
+ {
+ switch (PHYLinkState)
+ {
+ case LAN8742_STATUS_100MBITS_FULLDUPLEX:
+ duplex = ETH_FULLDUPLEX_MODE;
+ speed = ETH_SPEED_100M;
+ break;
+ case LAN8742_STATUS_100MBITS_HALFDUPLEX:
+ duplex = ETH_HALFDUPLEX_MODE;
+ speed = ETH_SPEED_100M;
+ break;
+ case LAN8742_STATUS_10MBITS_FULLDUPLEX:
+ duplex = ETH_FULLDUPLEX_MODE;
+ speed = ETH_SPEED_10M;
+ break;
+ case LAN8742_STATUS_10MBITS_HALFDUPLEX:
+ duplex = ETH_HALFDUPLEX_MODE;
+ speed = ETH_SPEED_10M;
+ break;
+ default:
+ duplex = ETH_FULLDUPLEX_MODE;
+ speed = ETH_SPEED_100M;
+ break;
+ }
+
+ /* Get MAC Config MAC */
+ HAL_ETH_GetMACConfig(&EthHandle, &MACConf);
+ MACConf.DuplexMode = duplex;
+ MACConf.Speed = speed;
+ HAL_ETH_SetMACConfig(&EthHandle, &MACConf);
+ HAL_ETH_Start_IT(&EthHandle);
+#ifdef __rtems__
+ /* Install the ETH IRQ for RTEMS */
+ rtems_interrupt_handler_install(ETH_IRQn, NULL, RTEMS_INTERRUPT_UNIQUE,
+ (rtems_interrupt_handler) &HAL_ETH_IRQHandler, &EthHandle);
+#endif
+ netif_set_up(netif);
+ netif_set_link_up(netif);
+ }
+#endif
+
+ ethernet_link_check_state(netif);
+}
+
+/**
+ * @brief This function should do the actual transmission of the packet. The packet is
+ * contained in the pbuf that is passed to the function. This pbuf
+ * might be chained.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
+ * @return ERR_OK if the packet could be sent
+ * an err_t value if the packet couldn't be sent
+ *
+ * @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
+ * strange results. You might consider waiting for space in the DMA queue
+ * to become available since the stack doesn't retry to send a packet
+ * dropped because of memory failure (except for the TCP timers).
+ */
+static err_t low_level_output(struct netif *netif, struct pbuf *p)
+{
+ uint32_t i=0;
+ struct pbuf *q;
+ err_t errval = ERR_OK;
+ ETH_BufferTypeDef Txbuffer[ETH_TX_DESC_CNT];
+
+ memset(Txbuffer, 0 , ETH_TX_DESC_CNT*sizeof(ETH_BufferTypeDef));
+
+ for(q = p; q != NULL; q = q->next)
+ {
+ if(i >= ETH_TX_DESC_CNT)
+ return ERR_IF;
+
+ Txbuffer[i].buffer = q->payload;
+ Txbuffer[i].len = q->len;
+
+#ifdef __rtems__
+ /* For the socket API, a custom send buffer might be used which is not protected by the
+ MPU. Therefore, clean DCache here as well */
+#if RTEMS_LWIP_PROTECT_LWIP_HEAP_WITH_MPU == 0 || LWIP_SOCKET == 1
+ /* Cleaning cache isn't necessary if the tx buffers are in a not-cacheable MPU region. */
+ uint8_t *dataStart = q->payload;
+ uint8_t *lineStart = (uint8_t *)((uint32_t)dataStart & ~31);
+ SCB_CleanDCache_by_Addr((uint32_t *)lineStart, q->len + (dataStart - lineStart));
+#endif
+#endif
+
+ if(i>0)
+ {
+ Txbuffer[i-1].next = &Txbuffer[i];
+ }
+
+ if(q->next == NULL)
+ {
+ Txbuffer[i].next = NULL;
+ }
+
+ i++;
+ }
+
+ TxConfig.Length = p->tot_len;
+ TxConfig.TxBuffer = Txbuffer;
+
+ HAL_ETH_Transmit(&EthHandle, &TxConfig, RTEMS_LWIP_ETH_DMA_TRANSMIT_TIMEOUT);
+
+ return errval;
+}
+
+/**
+ * @brief Should allocate a pbuf and transfer the bytes of the incoming
+ * packet from the interface into the pbuf.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @return a pbuf filled with the received packet (including MAC header)
+ * NULL on memory error
+ */
+static struct pbuf * low_level_input(struct netif *netif)
+{
+ struct pbuf *p = NULL;
+ ETH_BufferTypeDef RxBuff[ETH_RX_DESC_CNT];
+ uint32_t framelength = 0, i = 0;;
+ struct pbuf_custom* custom_pbuf;
+
+ memset(RxBuff, 0 , ETH_RX_DESC_CNT*sizeof(ETH_BufferTypeDef));
+
+ for(i = 0; i < ETH_RX_DESC_CNT -1; i++)
+ {
+ RxBuff[i].next=&RxBuff[i+1];
+ }
+
+#if NO_SYS == 0
+ if(HAL_ETH_GetRxDataBuffer(&EthHandle, RxBuff) == HAL_OK) {
+#else
+ if (HAL_ETH_IsRxDataAvailable(&EthHandle)) {
+#endif /* NO_SYS != 0 */
+
+#if NO_SYS == 1
+ HAL_ETH_GetRxDataBuffer(&EthHandle, RxBuff);
+#endif /* NO_SYS == 1 */
+
+ HAL_ETH_GetRxDataLength(&EthHandle, &framelength);
+
+ /* Build Rx descriptor to be ready for next data reception */
+ HAL_ETH_BuildRxDescriptors(&EthHandle);
+
+ /* Invalidate data cache for ETH Rx Buffers */
+ SCB_InvalidateDCache_by_Addr((uint32_t *)RxBuff->buffer, framelength);
+
+ custom_pbuf = (struct pbuf_custom*)LWIP_MEMPOOL_ALLOC(RX_POOL);
+ if(custom_pbuf != NULL)
+ {
+ custom_pbuf->custom_free_function = pbuf_free_custom;
+
+ p = pbuf_alloced_custom(PBUF_RAW, framelength, PBUF_REF, custom_pbuf, RxBuff->buffer, framelength);
+ }
+
+ }
+
+ return p;
+}
+
+#if NO_SYS == 0
+/**
+ * @brief This function is the ethernetif_input task, it is processed when a packet
+ * is ready to be read from the interface. It uses the function low_level_input()
+ * that should handle the actual reception of bytes from the network
+ * interface. Then the type of the received packet is determined and
+ * the appropriate input function is called.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ */
+void ethernetif_input(struct netif *netif)
+{
+ struct pbuf *p;
+
+ for( ;; )
+ {
+ if (sys_arch_sem_wait(&RxPktSemaphore, 0) != SYS_ARCH_TIMEOUT)
+ {
+ do
+ {
+ p = low_level_input( netif );
+ if (p != NULL)
+ {
+ if (netif->input( p, netif) != ERR_OK )
+ {
+ pbuf_free(p);
+ }
+ }
+
+ }while(p!=NULL);
+ }
+ }
+}
+#else
+/**
+ * @brief This function is the ethernetif_input task, it is processed when a packet
+ * is ready to be read from the interface. It uses the function low_level_input()
+ * that should handle the actual reception of bytes from the network
+ * interface. Then the type of the received packet is determined and
+ * the appropriate input function is called.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ */
+void ethernetif_input(struct netif *netif)
+{
+ err_t err;
+ struct pbuf *p;
+
+ /* move received packet into a new pbuf */
+ p = low_level_input(netif);
+
+ /* no packet could be read, silently ignore this */
+ if (p == NULL) return;
+
+ /* entry point to the LwIP stack */
+ err = netif->input(p, netif);
+
+ if (err != ERR_OK)
+ {
+ LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
+ pbuf_free(p);
+ p = NULL;
+ }
+}
+#endif /* NO_SYS == 1 */
+
+/**
+ * @brief Custom Rx pbuf free callback
+ * @param pbuf: pbuf to be freed
+ * @retval None
+ */
+void pbuf_free_custom(struct pbuf *p)
+{
+ struct pbuf_custom* custom_pbuf = (struct pbuf_custom*)p;
+ LWIP_MEMPOOL_FREE(RX_POOL, custom_pbuf);
+}
+
+
+/*******************************************************************************
+ Ethernet MSP Routines
+*******************************************************************************/
+/**
+ * @brief Note: HAL_ETH_MspInit of RTEMS BSP is used.
+ * @param heth: ETH handle
+ * @retval None
+*/
+
+#if NO_SYS == 0
+/**
+ * @brief Ethernet Rx Transfer completed callback
+ * @param heth: ETH handle
+ * @retval None
+ */
+void HAL_ETH_RxCpltCallback(ETH_HandleTypeDef *heth)
+{
+ sys_sem_signal(&RxPktSemaphore);
+}
+#endif
+
+/*******************************************************************************
+ PHI IO Functions
+*******************************************************************************/
+/**
+ * @brief Initializes the MDIO interface GPIO and clocks.
+ * @param None
+ * @retval 0 if OK, -1 if ERROR
+ */
+int32_t ETH_PHY_IO_Init(void)
+{
+ /* We assume that MDIO GPIO configuration is already done
+ in the ETH_MspInit() else it should be done here
+ */
+
+ /* Configure the MDIO Clock */
+ HAL_ETH_SetMDIOClockRange(&EthHandle);
+
+ return 0;
+}
+
+/**
+ * @brief De-Initializes the MDIO interface .
+ * @param None
+ * @retval 0 if OK, -1 if ERROR
+ */
+int32_t ETH_PHY_IO_DeInit (void)
+{
+ return 0;
+}
+
+/**
+ * @brief Read a PHY register through the MDIO interface.
+ * @param DevAddr: PHY port address
+ * @param RegAddr: PHY register address
+ * @param pRegVal: pointer to hold the register value