ZYNQ. LwIP.PHY.KSZ9031RNX

新一块板子

米尔科技的 z-turn 使用的PHY芯片是Micrel的 KSZ9031RNX 而不是zedboard上的Marvell的。

直接使用lwip的echo server demo时会报错，无法启动。

在网上找了很久终于找到几篇关于这个问题的文章。

修改PHY的驱动 xemacpsif_physpeed.c 文件

该芯片的PHY Identifier 是 0x0022

bsp设置中修改参数以提速

MEM_SIZE 524288
MEMP_N_PBUF 1024
MEMP_N_TCP_SEG 1024

PBUF_POOL_SIZE 8192

TCP_MSS 4096
TCP_SND_BUF 65535
TCP_WND 65535

N_RX_DESCRIPTORS = 512
N_TX_DESCRIPTORS = 512

TCP_IP_TX_CHECKSUM_OFFLOAD= true
TCP_IP_RX_CHECKSUM_OFFLOAD= true

//********* 2018/11/27********

添加的代码

Code：

#define PHY_MICREL_IDENTIFIER                0x0022    //added by Liny

//added by Liny

static u32_t get_Micrel_phy_speed(XEmacPs *xemacpsp, u32_t phy_addr)

{

    u16_t temp;

    u16_t control;

    u16_t status;

    u16_t status_speed;

    u32_t timeout_counter = ;

    u32_t temp_speed;

    //u32_t phyregtemp;

    xil_printf("Start Micrel PHY autonegotiation  \r\n");

    //Auto-negotiation Advertisement REG

    XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_AUTONEGO_ADVERTISE_REG, &control);  //reg 0x04

    control |= IEEE_ASYMMETRIC_PAUSE_MASK;   //0x0800

    control |= IEEE_PAUSE_MASK;

    control |= ADVERTISE_100;

    control |= ADVERTISE_10;

    XEmacPs_PhyWrite(xemacpsp, phy_addr, IEEE_AUTONEGO_ADVERTISE_REG, control);

    //1000Basic-T Control REG

    XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_1000_ADVERTISE_REG_OFFSET, &control);

    control |= ADVERTISE_1000;

    XEmacPs_PhyWrite(xemacpsp, phy_addr, IEEE_1000_ADVERTISE_REG_OFFSET,control);

    //

//    XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_COPPER_SPECIFIC_CONTROL_REG, &control);  //reg 0x0f

//    control |= (7 << 12);

//    control |= (1 << 11);

//    XEmacPs_PhyWrite(xemacpsp, phy_addr, IEEE_COPPER_SPECIFIC_CONTROL_REG, control);

    //basic Control

    XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, &control);        //reg 0x00

    control |= IEEE_CTRL_AUTONEGOTIATE_ENABLE;

    control |= IEEE_STAT_AUTONEGOTIATE_RESTART;

    XEmacPs_PhyWrite(xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, control);

    //basic Control

    XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, &control);

    control |= IEEE_CTRL_RESET_MASK;

    XEmacPs_PhyWrite(xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, control);

    while () {

        XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, &control);

        if (control & IEEE_CTRL_RESET_MASK)

            continue;

        else

            break;

    }

    //read extended staus

    XEmacPs_PhyRead(xemacpsp, phy_addr, 0x0f, &status);

    xil_printf("extened status:0x%x \r\n",status);

    //read baisc status reg

    XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_STATUS_REG_OFFSET, &status);

    xil_printf("Waiting for PHY to complete autonegotiation.\r\n");

    while ( !(status & IEEE_STAT_AUTONEGOTIATE_COMPLETE) ) {

        sleep();

        XEmacPs_PhyRead(xemacpsp, phy_addr,

        IEEE_COPPER_SPECIFIC_STATUS_REG_2,  &temp);

        timeout_counter++;

        if (timeout_counter == ) {

            xil_printf("Auto negotiation error \r\n");

            return XST_FAILURE;

        }

        XEmacPs_PhyRead(xemacpsp, phy_addr, IEEE_STATUS_REG_OFFSET, &status);

    }

    xil_printf("autonegotiation complete \r\n");

    //#define IEEE_1000BASE_STATUS_REG 0x0a

    #define MICREL_PHY_CONTROL_REG 0x1f

    //XEmacPs_PhyRead(xemacpsp, phy_addr,IEEE_SPECIFIC_STATUS_REG, &status_speed);

    //XEmacPs_PhyRead(xemacpsp, phy_addr,IEEE_1000BASE_STATUS_REG, &status_speed);

    //if (status_speed & 0x0800) {

    //xil_printf("micrel phy ksz9031 speed 1000 \r\n");

    //return 1000;

    //}

    //modify by Liny

    XEmacPs_PhyRead(xemacpsp, phy_addr,MICREL_PHY_CONTROL_REG,

    &status_speed); // 读取寄存器17,改为31  0x1f  VS_PHY_CONTROL_REG  IEEE_SPECIFIC_STATUS_REG

    if (!(status_speed & 0x01)) {  //link on 原来0x400,第10 位

        xil_printf("PHY Link stutus:not failing \r\n");

        temp_speed = status_speed & 0x70; // 读取最高两位速度  [6:4]status_speed & IEEE_SPEED_MASK

        if (temp_speed == 0x40)//IEEE_SPEED_1000

            return ;

        else if(temp_speed == 0x20)//IEEE_SPEED_100

            return ;

        else

            return ;

    }

    return XST_SUCCESS;

}

//added by Liny

static u32_t get_IEEE_phy_speed(XEmacPs *xemacpsp, u32_t phy_addr)

{

    u16_t phy_identity;

    u32_t RetStatus;

    XEmacPs_PhyRead(xemacpsp, phy_addr, PHY_IDENTIFIER_1_REG,

                    &phy_identity);

    if (phy_identity == PHY_TI_IDENTIFIER) {

        RetStatus = get_TI_phy_speed(xemacpsp, phy_addr);

    } else if (phy_identity == PHY_REALTEK_IDENTIFIER) {

        RetStatus = get_Realtek_phy_speed(xemacpsp, phy_addr);

    }

    //added by Liny

    else if(phy_identity == PHY_MICREL_IDENTIFIER){

    RetStatus = get_Micrel_phy_speed(xemacpsp, phy_addr);

    }

    //added by Liny

    else {

        RetStatus = get_Marvell_phy_speed(xemacpsp, phy_addr);

    }

    return RetStatus;

}

via：

https://forums.xilinx.com/t5/Embedded-Development-Tools/2015-4-lwip-KSZ9031-link-issues/m-p/696975

https://blog.csdn.net/yezizhangxinya/article/details/55805512?locationNum=4&fps=1

https://blog.csdn.net/he_wen_jie/article/details/51880845

https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842366/Standalone+LWIP+library

https://blog.csdn.net/ma_cheng_yuan/article/details/78527205?utm_source=copy

巴特西

ZYNQ. LwIP.PHY.KSZ9031RNX

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