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rt-thread/bsp/stm32/stm32mp157a-st-ev1/board/ports/eth/drv_eth.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-07-20 thread-liu the first version
*/
#include "board.h"
#include "drv_config.h"
#include <netif/ethernetif.h>
#include "lwipopts.h"
#include "drv_eth.h"
#if defined(BSP_USING_GBE)
//#define DRV_DEBUG
//#define ETH_RX_DUMP
//#define ETH_TX_DUMP
#define LOG_TAG "drv.emac"
#include <drv_log.h>
#define MAX_ADDR_LEN 6
rt_base_t level;
#define TX_ADD_BASE 0x2FFC3000
#define RX_ADD_BASE 0x2FFC5000
#define TX_DMA_ADD_BASE 0x2FFC7000
#define RX_DMA_ADD_BASE 0x2FFC7100
#undef PHY_FULL_DUPLEX
#undef PHY_HALF_DUPLEX
#define PHY_LINK (1 << 0)
#define PHY_10M (1 << 1)
#define PHY_100M (1 << 2)
#define PHY_1000M (1 << 3)
#define PHY_FULL_DUPLEX (1 << 4)
#define PHY_HALF_DUPLEX (1 << 5)
#if defined(__ICCARM__)
/* transmit buffer */
#pragma location = TX_ADD_BASE
__no_init static rt_uint8_t txBuffer[ETH_TXBUFNB][ETH_TX_BUF_SIZE];
/* Receive buffer */
#pragma location = RX_ADD_BASE
__no_init static rt_uint8_t rxBuffer[ETH_RXBUFNB][ETH_RX_BUF_SIZE];
/* Transmit DMA descriptors */
#pragma location = TX_DMA_ADD_BASE
__no_init static TxDmaDesc txDmaDesc[ETH_TXBUFNB];
/* Receive DMA descriptors */
#pragma location = RX_DMA_ADD_BASE
__no_init static RxDmaDesc rxDmaDesc[ETH_RXBUFNB];
#elif defined(__ARMCC_VERSION)
/* transmit buffer */
static rt_uint8_t txBuffer[ETH_TXBUFNB][ETH_TX_BUF_SIZE] __attribute__((at(TX_ADD_BASE)));
/* Receive buffer */
static rt_uint8_t rxBuffer[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __attribute__((at(RX_ADD_BASE)));
/* Transmit DMA descriptors */
static TxDmaDesc txDmaDesc[ETH_TXBUFNB] __attribute__((at(TX_DMA_ADD_BASE)));
/* Receive DMA descriptors */
static RxDmaDesc rxDmaDesc[ETH_RXBUFNB] __attribute__((at(RX_DMA_ADD_BASE)));
#elif defined ( __GNUC__ )
/* transmit buffer */
static rt_uint8_t txBuffer[ETH_TXBUFNB][ETH_TX_BUF_SIZE] __attribute__((section(".TxArraySection")));
/* Receive buffer */
static rt_uint8_t rxBuffer[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __attribute__((section(".RxArraySection")));
/* Transmit DMA descriptors */
static TxDmaDesc txDmaDesc[ETH_TXBUFNB] __attribute__((section(".TxDecripSection")));
/* Receive DMA descriptors */
static RxDmaDesc rxDmaDesc[ETH_RXBUFNB] __attribute__((section(".RxDecripSection")));
#endif
//Current transmit descriptor
static rt_uint8_t txIndex = 0;
//Current receive descriptor
static rt_uint8_t rxIndex = 0;
/* eth */
static struct rt_event rx_event = {0};
#define ETH_TIME_OUT 100000
struct rt_stm32_eth
{
/* inherit from ethernet device */
struct eth_device parent;
#ifndef PHY_USING_INTERRUPT_MODE
rt_timer_t poll_link_timer;
#endif
/* interface address info, hw address */
rt_uint8_t dev_addr[MAX_ADDR_LEN];
/* eth speed */
uint32_t eth_speed;
/* eth duplex mode */
uint32_t eth_mode;
};
static struct rt_stm32_eth stm32_eth_device = {0};
#if defined(ETH_RX_DUMP) || defined(ETH_TX_DUMP)
#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
static void dump_hex(const rt_uint8_t *ptr, rt_size_t buflen)
{
unsigned char *buf = (unsigned char *)ptr;
int i, j;
for (i = 0; i < buflen; i += 16)
{
rt_kprintf("%08X: ", i);
for (j = 0; j < 16; j++)
if (i + j < buflen)
rt_kprintf("%02X ", buf[i + j]);
else
rt_kprintf(" ");
rt_kprintf(" ");
for (j = 0; j < 16; j++)
if (i + j < buflen)
rt_kprintf("%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
rt_kprintf("\n");
}
}
#endif
static rt_err_t phy_write_reg(uint8_t phy_addr, uint8_t reg_addr, uint16_t reg_value)
{
uint32_t temp;
volatile uint32_t tickstart = 0;
/* Take care not to alter MDC clock configuration */
temp = ETH->MACMDIOAR & ETH_MACMDIOAR_CR;
/* Set up a write operation */
temp |= ETH_MACMDIOAR_GOC_Val(1) | ETH_MACMDIOAR_GB;
/* PHY address */
temp |= (phy_addr << 21) & ETH_MACMDIOAR_PA;
/* Register address */
temp |= (reg_addr << 16) & ETH_MACMDIOAR_RDA;
/* Data to be written in the PHY register */
ETH->MACMDIODR = reg_value & ETH_MACMDIODR_GD;
/* Start a write operation */
ETH->MACMDIOAR = temp;
/* Wait for the write to complete */
tickstart = rt_tick_get();
while((ETH->MACMDIOAR & ETH_MACMDIOAR_GB) != 0)
{
/* judge timeout */
if((rt_tick_get() - tickstart) > ETH_TIME_OUT)
{
LOG_E("PHY write reg %02x date %04x timeout!", reg_addr, reg_value);
return RT_ETIMEOUT;
}
}
return RT_EOK;
}
static uint16_t phy_read_reg(uint8_t phy_addr, uint8_t reg_addr)
{
uint16_t reg_value = 0;
uint32_t status = 0;
volatile uint32_t tickstart = 0;
/* Take care not to alter MDC clock configuration */
status = ETH->MACMDIOAR & ETH_MACMDIOAR_CR;
/* Set up a read operation */
status |= ETH_MACMDIOAR_GOC_Val(3) | ETH_MACMDIOAR_GB;
/* PHY address */
status |= (phy_addr << 21) & ETH_MACMDIOAR_PA;
/* Register address */
status |= (reg_addr << 16) & ETH_MACMDIOAR_RDA;
/* Start a read operation */
ETH->MACMDIOAR = status;
/* Wait for the read to complete */
tickstart = rt_tick_get();
while((ETH->MACMDIOAR & ETH_MACMDIOAR_GB) != 0)
{
/* judge timeout */
if((rt_tick_get() - tickstart) > ETH_TIME_OUT)
{
LOG_E("PHY read reg %02x timeout!", reg_addr);
return RT_ETIMEOUT;
}
}
/* Get register value */
reg_value = ETH->MACMDIODR & ETH_MACMDIODR_GD;
return reg_value;
}
static rt_err_t update_mac_mode(void)
{
uint32_t status;
/* Read current MAC configuration */
status = ETH->MACCR;
if (stm32_eth_device.eth_speed & PHY_1000M)
{
status &= ~ETH_MACCR_PS;
status &= ~ETH_MACCR_FES;
}
else if (stm32_eth_device.eth_speed & PHY_100M)
{
status |= ETH_MACCR_PS;
status |= ETH_MACCR_FES;
}
/* 10M */
else
{
status |= ETH_MACCR_PS;
status &= ~ETH_MACCR_FES;
}
if (stm32_eth_device.eth_mode & PHY_FULL_DUPLEX)
{
status |= ETH_MACCR_DM;
}
else
{
status &= ~ETH_MACCR_DM;
}
/* Update MAC configuration register */
ETH->MACCR = status;
return RT_EOK;
}
static void HAL_ETH_MspInit(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(IS_ENGINEERING_BOOT_MODE())
{
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ETH;
PeriphClkInit.EthClockSelection = RCC_ETHCLKSOURCE_PLL4;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
/* Enable SYSCFG clock */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* Enable GPIO clocks */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
/* Select RGMII interface mode */
HAL_SYSCFG_ETHInterfaceSelect(SYSCFG_ETH_RGMII);
/* Enable Ethernet MAC clock */
__HAL_RCC_ETH1MAC_CLK_ENABLE();
__HAL_RCC_ETH1TX_CLK_ENABLE();
__HAL_RCC_ETH1RX_CLK_ENABLE();
/**ETH1 GPIO Configuration
PA1 ------> ETH1_RX_CLK
PA2 ------> ETH1_MDIO
PA7 ------> ETH1_RX_CTL
PB0 ------> ETH1_RXD2
PB1 ------> ETH1_RXD3
PB11 ------> ETH1_TX_CTL
PC1 ------> ETH1_MDC
PC2 ------> ETH1_TXD2
PC4 ------> ETH1_RXD0
PC5 ------> ETH1_RXD1
PE2 ------> ETH1_TXD3
PG4 ------> ETH1_GTX_CLK
PG5 ------> ETH1_CLK125
PG13 ------> ETH1_TXD0
PG14 ------> ETH1_TXD1
*/
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_11;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_2;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_13|GPIO_PIN_14;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
/* ETH interrupt Init */
HAL_NVIC_SetPriority(ETH1_IRQn, 0x01, 0x00);
HAL_NVIC_EnableIRQ(ETH1_IRQn);
/* Configure PHY_RST (PD10) */
GPIO_InitStruct.Pin = GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/* Reset PHY transceiver */
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_10, GPIO_PIN_RESET);
rt_thread_mdelay(20);
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_10, GPIO_PIN_SET);
rt_thread_mdelay(20);
}
static rt_err_t rt_stm32_eth_init(rt_device_t dev)
{
RT_ASSERT(dev != RT_NULL);
rt_uint32_t status;
int i = 0 ;
volatile uint32_t tickstart = 0;
uint8_t *macAddr = &stm32_eth_device.dev_addr[0];
/* Initialize RX/TX descriptor index */
rxIndex = txIndex = 0;
HAL_ETH_MspInit();
/* Reset Ethernet MAC peripheral */
__HAL_RCC_ETH1MAC_FORCE_RESET();
__HAL_RCC_ETH1MAC_RELEASE_RESET();
/* Ethernet Software reset */
ETH->DMAMR |= ETH_DMAMR_SWR;
/* Wait for the reset to complete */
tickstart = rt_tick_get();
while (READ_BIT(ETH->DMAMR, ETH_DMAMR_SWR))
{
if(((HAL_GetTick() - tickstart ) > ETH_TIME_OUT))
{
LOG_E("ETH software reset timeout!");
return -RT_ERROR;
}
}
/* Adjust MDC clock range depending on HCLK frequency */
ETH->MACMDIOAR = ETH_MACMDIOAR_CR_Val(5);
/* Use default MAC configuration */
ETH->MACCR = ETH_MACCR_DO;
/* Set the MAC address of the station */
ETH->MACA0LR = ((macAddr[3] << 24) | (macAddr[2] << 16) | (macAddr[1] << 8) | macAddr[0]);
ETH->MACA0HR = ((macAddr[5] << 8) | macAddr[4]);
/* The MAC supports 3 additional addresses for unicast perfect filtering */
ETH->MACA1LR = 0;
ETH->MACA1HR = 0;
ETH->MACA2LR = 0;
ETH->MACA2HR = 0;
ETH->MACA3LR = 0;
ETH->MACA3HR = 0;
/* Initialize hash table */
ETH->MACHT0R = 0;
ETH->MACHT1R = 0;
/* Configure the receive filter */
ETH->MACPFR = ETH_MACPFR_HPF | ETH_MACPFR_HMC;
/* Disable flow control */
ETH->MACQ0TXFCR = 0;
ETH->MACRXFCR = 0;
/* Enable the first RX queue */
ETH->MACRXQC0R = ETH_MACRXQC0R_RXQ0EN_Val(1);
/* Configure DMA operating mode */
ETH->DMAMR = ETH_DMAMR_INTM_Val(0) | ETH_DMAMR_PR_Val(0);
/* Configure system bus mode */
ETH->DMASBMR |= ETH_DMASBMR_AAL;
/* The DMA takes the descriptor table as contiguous */
ETH->DMAC0CR = ETH_DMAC0CR_DSL_Val(0);
/* Configure TX features */
ETH->DMAC0TXCR = ETH_DMAC0TXCR_TXPBL_Val(1);
/* Configure RX features */
ETH->DMAC0RXCR = ETH_DMAC0RXCR_RXPBL_Val(1) | ETH_DMAC0RXCR_RBSZ_Val(ETH_RX_BUF_SIZE);
/* Enable store and forward mode for transmission */
ETH->MTLTXQ0OMR = ETH_MTLTXQ0OMR_TQS_Val(7) | ETH_MTLTXQ0OMR_TXQEN_Val(2) | ETH_MTLTXQ0OMR_TSF;
/* Enable store and forward mode for reception */
ETH->MTLRXQ0OMR = ETH_MTLRXQ0OMR_RQS_Val(7) | ETH_MTLRXQ0OMR_RSF;
/* Initialize TX DMA descriptor list */
for (i = 0; i < ETH_TXBUFNB; i++)
{
/* The descriptor is initially owned by the application */
txDmaDesc[i].tdes0 = 0;
txDmaDesc[i].tdes1 = 0;
txDmaDesc[i].tdes2 = 0;
txDmaDesc[i].tdes3 = 0;
}
/* Initialize RX DMA descriptor list */
for (i = 0; i < ETH_RXBUFNB; i++)
{
/* The descriptor is initially owned by the DMA */
rxDmaDesc[i].rdes0 = (uint32_t)rxBuffer[i];
rxDmaDesc[i].rdes1 = 0;
rxDmaDesc[i].rdes2 = 0;
rxDmaDesc[i].rdes3 = ETH_RDES3_OWN | ETH_RDES3_IOC | ETH_RDES3_BUF1V;
}
/* Set Transmit Descriptor List Address Register */
ETH->DMAC0TXDLAR = (uint32_t)&txDmaDesc[0];
/* Length of the transmit descriptor ring */
ETH->DMAC0TXRLR = ETH_TXBUFNB - 1;
/* Set Receive Descriptor List Address Register */
ETH->DMAC0RXDLAR = (uint32_t)&rxDmaDesc[0];
/* Length of the receive descriptor ring */
ETH->DMAC0RXRLR = ETH_RXBUFNB - 1;
/* Prevent interrupts from being generated when the transmit statistic
* counters reach half their maximum value */
ETH->MMCTXIMR = ETH_MMCTXIMR_TXLPITRCIM | ETH_MMCTXIMR_TXLPIUSCIM | ETH_MMCTXIMR_TXGPKTIM | ETH_MMCTXIMR_TXMCOLGPIM | ETH_MMCTXIMR_TXSCOLGPIM;
/* Prevent interrupts from being generated when the receive statistic
* counters reach half their maximum value */
ETH->MMCRXIMR = ETH_MMCRXIMR_RXLPITRCIM | ETH_MMCRXIMR_RXLPIUSCIM | ETH_MMCRXIMR_RXUCGPIM | ETH_MMCRXIMR_RXALGNERPIM | ETH_MMCRXIMR_RXCRCERPIM;
/* Disable MAC interrupts */
ETH->MACIER = 0;
/* Enable the desired DMA interrupts */
ETH->DMAC0IER = ETH_DMAC0IER_NIE | ETH_DMAC0IER_RIE | ETH_DMAC0IER_TIE;
/* Enable MAC transmission and reception */
ETH->MACCR |= ETH_MACCR_TE | ETH_MACCR_RE;
/* Enable DMA transmission and reception */
ETH->DMAC0TXCR |= ETH_DMAC0TXCR_ST;
ETH->DMAC0RXCR |= ETH_DMAC0RXCR_SR;
/* Reset PHY transceiver */
phy_write_reg(RTL8211E_PHY_ADDR, RTL8211E_BMCR, RTL8211E_BMCR_RESET);
status = phy_read_reg(RTL8211E_PHY_ADDR, RTL8211E_BMCR);
/* Wait for the reset to complete */
tickstart = rt_tick_get();
while (status & RTL8211E_BMCR_RESET)
{
if((rt_tick_get() - tickstart) > ETH_TIME_OUT)
{
LOG_E("PHY software reset timeout!");
return RT_ETIMEOUT;
}
else
{
status = phy_read_reg(RTL8211E_PHY_ADDR, RTL8211E_BMCR);
}
}
/* The PHY will generate interrupts when link status changes are detected */
phy_write_reg(RTL8211E_PHY_ADDR, RTL8211E_INER, RTL8211E_INER_AN_COMPLETE | RTL8211E_INER_LINK_STATUS);
return RT_EOK;
}
static rt_err_t rt_stm32_eth_open(rt_device_t dev, rt_uint16_t oflag)
{
LOG_D("emac open");
return RT_EOK;
}
static rt_err_t rt_stm32_eth_close(rt_device_t dev)
{
LOG_D("emac close");
return RT_EOK;
}
static rt_ssize_t rt_stm32_eth_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
LOG_D("emac read");
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_ssize_t rt_stm32_eth_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
LOG_D("emac write");
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_err_t rt_stm32_eth_control(rt_device_t dev, int cmd, void *args)
{
switch (cmd)
{
case NIOCTL_GADDR:
/* get mac address */
if (args)
{
rt_memcpy(args, stm32_eth_device.dev_addr, 6);
}
else
{
return -RT_ERROR;
}
break;
default :
break;
}
return RT_EOK;
}
rt_err_t rt_stm32_eth_tx(rt_device_t dev, struct pbuf *p)
{
uint32_t framelen = 0;
struct pbuf *q = RT_NULL;
/* Copy user data to the transmit buffer */
for (q = p; q != NULL; q = q->next)
{
/* Make sure the current buffer is available for writing */
if((txDmaDesc[txIndex].tdes3 & ETH_TDES3_OWN) != 0)
{
LOG_D("buffer not valid");
return ERR_USE;
}
level = rt_hw_interrupt_disable();
rt_memcpy(&txBuffer[txIndex][framelen], q->payload, q->len);
framelen += q->len;
rt_hw_interrupt_enable(level);
/* Check the frame length */
if (framelen > ETH_TX_BUF_SIZE - 1)
{
LOG_D(" tx buffer frame length over : %d", framelen);
return ERR_USE;
}
}
#ifdef ETH_TX_DUMP
rt_kprintf("Tx dump, len= %d\r\n", framelen);
dump_hex(txBuffer[txIndex], framelen);
#endif
/* Set the start address of the buffer */
txDmaDesc[txIndex].tdes0 = (uint32_t)txBuffer[txIndex];
/* Write the number of bytes to send */
txDmaDesc[txIndex].tdes2 = ETH_TDES2_IOC | (framelen & ETH_TDES2_B1L);
/* Give the ownership of the descriptor to the DMA */
txDmaDesc[txIndex].tdes3 = ETH_TDES3_OWN | ETH_TDES3_FD | ETH_TDES3_LD;
/* Data synchronization barrier */
__DSB();
/* Clear TBU flag to resume processing */
ETH->DMAC0SR = ETH_DMAC0SR_TBU;
/* Instruct the DMA to poll the transmit descriptor list */
ETH->DMAC0TXDTPR = 0;
if (++txIndex > ETH_TXBUFNB - 1)
{
txIndex = 0;
}
return ERR_OK;
}
struct pbuf *rt_stm32_eth_rx(rt_device_t dev)
{
rt_uint32_t framelength = 0;
uint32_t framelen = 0;
struct pbuf *p = RT_NULL, *q = RT_NULL;
/* The current buffer is available for reading */
if (!(rxDmaDesc[rxIndex].rdes3 & ETH_RDES3_OWN))
{
/* FD and LD flags should be set */
if ((rxDmaDesc[rxIndex].rdes3 & ETH_RDES3_FD) && (rxDmaDesc[rxIndex].rdes3 & ETH_RDES3_LD))
{
/* Make sure no error occurred */
if(!(rxDmaDesc[rxIndex].rdes3 & ETH_RDES3_ES))
{
/* Retrieve the length of the frame */
framelength = rxDmaDesc[rxIndex].rdes3 & ETH_RDES3_PL;
/* check the frame length */
framelength = (framelength > ETH_RX_BUF_SIZE) ? ETH_RX_BUF_SIZE : framelength;
p = pbuf_alloc(PBUF_RAW, framelength, PBUF_RAM);
if (p != NULL)
{
for (q = p; q != NULL; q = q->next)
{
level=rt_hw_interrupt_disable();
rt_memcpy(q->payload, &rxBuffer[rxIndex][framelen], q->len);
framelen += q->len;
rt_hw_interrupt_enable(level);
if (framelen > framelength)
{
LOG_E("frame len is too long!");
return RT_NULL;
}
}
}
}
else
{
/* The received packet contains an error */
LOG_D("the received packet contains an error!");
return RT_NULL;
}
}
else
{
/* The packet is not valid */
LOG_D("the packet is not valid");
return RT_NULL;
}
/* Set the start address of the buffer */
rxDmaDesc[rxIndex].rdes0 = (uint32_t)rxBuffer[rxIndex];
/* Give the ownership of the descriptor back to the DMA */
rxDmaDesc[rxIndex].rdes3 = ETH_RDES3_OWN | ETH_RDES3_IOC | ETH_RDES3_BUF1V;
#ifdef ETH_RX_DUMP
rt_kprintf("Rx dump, len= %d\r\n", framelen);
dump_hex(rxBuffer[rxIndex], framelen);
#endif
/* Increment index and wrap around if necessary */
if (++rxIndex > ETH_RXBUFNB - 1)
{
rxIndex = 0;
}
/* Clear RBU flag to resume processing */
ETH->DMAC0SR = ETH_DMAC0SR_RBU;
/* Instruct the DMA to poll the receive descriptor list */
ETH->DMAC0RXDTPR = 0;
}
return p;
}
void ETH1_IRQHandler(void)
{
rt_uint32_t status = 0;
/* enter interrupt */
rt_interrupt_enter();
/* Read DMA status register */
status = ETH->DMAC0SR;
/* Frame transmitted */
if (status & ETH_DMAC0SR_TI)
{
/* Clear the Eth DMA Tx IT pending bits */
ETH->DMAC0SR = ETH_DMAC0SR_TI;
}
/* Frame received */
else if (status & ETH_DMAC0SR_RI)
{
/* Disable RIE interrupt */
ETH->DMAC0IER &= ~ETH_DMAC0IER_RIE;
rt_event_send(&rx_event, status);
}
/* ETH DMA Error */
if (status & ETH_DMAC0SR_AIS)
{
ETH->DMAC0IER &= ~ETH_DMAC0IER_AIE;
LOG_E("eth dam err");
}
/* Clear the interrupt flags */
ETH->DMAC0SR = ETH_DMAC0SR_NIS;
/* leave interrupt */
rt_interrupt_leave();
}
static void phy_linkchange()
{
rt_uint32_t status = 0;
/* Read status register to acknowledge the interrupt */
status = phy_read_reg(RTL8211E_PHY_ADDR, RTL8211E_INSR);
if (status & (RTL8211E_INSR_AN_COMPLETE | RTL8211E_INSR_LINK_STATUS))
{
status = phy_read_reg(RTL8211E_PHY_ADDR, RTL8211E_BMSR);
status = phy_read_reg(RTL8211E_PHY_ADDR, RTL8211E_BMSR);
if (status & RTL8211E_BMSR_LINK_STATUS)
{
LOG_D("link up");
status = phy_read_reg(RTL8211E_PHY_ADDR, RTL8211E_PHYSR);
switch (status & RTL8211E_PHYSR_SPEED)
{
case RTL8211E_PHYSR_SPEED_10MBPS:
{
LOG_D("speed: 10M");
stm32_eth_device.eth_speed |= PHY_10M;
break;
}
case RTL8211E_PHYSR_SPEED_100MBPS:
{
LOG_D("speed: 100M");
stm32_eth_device.eth_speed |= PHY_100M;
break;
}
case RTL8211E_PHYSR_SPEED_1000MBPS:
{
LOG_D("speed: 1000M");
stm32_eth_device.eth_speed |= PHY_1000M;
break;
}
/* Unknown speed */
default:
rt_kprintf("Invalid speed.");
break;
}
stm32_eth_device.eth_mode = (status & RTL8211E_PHYSR_DUPLEX)? PHY_FULL_DUPLEX : PHY_HALF_DUPLEX;
update_mac_mode();
/* send link up. */
eth_device_linkchange(&stm32_eth_device.parent, RT_TRUE);
}
else
{
LOG_D("link down");
eth_device_linkchange(&stm32_eth_device.parent, RT_FALSE);
}
}
}
#ifdef PHY_USING_INTERRUPT_MODE
static void eth_phy_isr(void *args)
{
rt_uint32_t status = 0;
phy_read_reg(RTL8211E_PHY_ADDR, PHY_INTERRUPT_FLAG_REG, (uint32_t *)&status);
LOG_D("phy interrupt status reg is 0x%X", status);
phy_linkchange();
}
#endif /* PHY_USING_INTERRUPT_MODE */
static void phy_monitor_thread_entry(void *parameter)
{
rt_uint32_t status = 0;
phy_linkchange();
#ifdef PHY_USING_INTERRUPT_MODE
/* configuration intterrupt pin */
rt_pin_mode(PHY_INT_PIN, PIN_MODE_INPUT_PULLUP);
rt_pin_attach_irq(PHY_INT_PIN, PIN_IRQ_MODE_FALLING, eth_phy_isr, (void *)"callbackargs");
rt_pin_irq_enable(PHY_INT_PIN, PIN_IRQ_ENABLE);
/* enable phy interrupt */
phy_write_reg(RTL8211E_PHY_ADDR, PHY_INTERRUPT_MASK_REG, PHY_INT_MASK);
#if defined(PHY_INTERRUPT_CTRL_REG)
phy_write_reg( RTL8211E_PHY_ADDR, PHY_INTERRUPT_CTRL_REG, PHY_INTERRUPT_EN);
#endif
#else /* PHY_USING_INTERRUPT_MODE */
stm32_eth_device.poll_link_timer = rt_timer_create("phylnk", (void (*)(void*))phy_linkchange,
NULL, RT_TICK_PER_SECOND, RT_TIMER_FLAG_PERIODIC);
if (!stm32_eth_device.poll_link_timer || rt_timer_start(stm32_eth_device.poll_link_timer) != RT_EOK)
{
LOG_E("Start link change detection timer failed");
}
#endif /* PHY_USING_INTERRUPT_MODE */
while(1)
{
if (rt_event_recv(&rx_event, 0xffffffff, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
RT_WAITING_FOREVER, &status) == RT_EOK)
{
/* check dma rx buffer */
if (ETH->DMAC0SR & ETH_DMAC0SR_RI)
{
/* Clear interrupt flag */
ETH->DMAC0SR = ETH_DMAC0SR_RI;
/* Process all pending packets */
while (rxDmaDesc[rxIndex].rdes3 & ETH_RDES3_PL)
{
/* trigger lwip receive thread */
eth_device_ready(&(stm32_eth_device.parent));
}
}
/* enable DMA interrupts */
ETH->DMAC0IER = ETH_DMAC0IER_NIE | ETH_DMAC0IER_RIE | ETH_DMAC0IER_TIE;
}
}
}
/* Register the EMAC device */
static int rt_hw_stm32_eth_init(void)
{
rt_err_t state = RT_EOK;
/* OUI 00-80-E1 STMICROELECTRONICS. */
stm32_eth_device.dev_addr[0] = 0x00;
stm32_eth_device.dev_addr[1] = 0x80;
stm32_eth_device.dev_addr[2] = 0xE1;
/* generate MAC addr from 96bit unique ID. */
stm32_eth_device.dev_addr[3] = *(rt_uint8_t *)(UID_BASE + 4);
stm32_eth_device.dev_addr[4] = *(rt_uint8_t *)(UID_BASE + 2);
stm32_eth_device.dev_addr[5] = *(rt_uint8_t *)(UID_BASE + 0);
stm32_eth_device.parent.parent.init = rt_stm32_eth_init;
stm32_eth_device.parent.parent.open = rt_stm32_eth_open;
stm32_eth_device.parent.parent.close = rt_stm32_eth_close;
stm32_eth_device.parent.parent.read = rt_stm32_eth_read;
stm32_eth_device.parent.parent.write = rt_stm32_eth_write;
stm32_eth_device.parent.parent.control = rt_stm32_eth_control;
stm32_eth_device.parent.parent.user_data = RT_NULL;
stm32_eth_device.parent.eth_rx = rt_stm32_eth_rx;
stm32_eth_device.parent.eth_tx = rt_stm32_eth_tx;
rt_event_init(&rx_event, "eth_rx", RT_IPC_FLAG_FIFO);
/* register eth device */
state = eth_device_init(&(stm32_eth_device.parent), "e0");
if (RT_EOK == state)
{
LOG_D("emac device init success");
}
else
{
LOG_E("emac device init faild: %d", state);
state = -RT_ERROR;
}
/* start phy monitor */
rt_thread_t tid;
tid = rt_thread_create("phy",
phy_monitor_thread_entry,
RT_NULL,
1024,
RT_THREAD_PRIORITY_MAX - 2,
2);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
}
else
{
state = -RT_ERROR;
}
return state;
}
INIT_DEVICE_EXPORT(rt_hw_stm32_eth_init);
#endif
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