ls1046A下获取网口PHY的寄存器值

elephant4216 发表于 2022-10-10 14:18:16

你好：
请问在ls1046A下，怎样获取网口PHY各个寄存器的值？
谢谢！

elephant4216 发表于 2022-10-12 18:50:01

hai 发表于 2022-10-12 10:20
您好，我们这边是直接使用的ethtool fm1-amc3这个命令，这个能看到网口的协商结果还有是否处于link状态等 ...

嗯，是的，我实现了，分享如下：
修改文件：drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c
修改接口：dpa_ioctl
修改的地方：在接口dpa_ioctl的最后一个return之前加入如下的代码：
   if( cmd >= SIOCGMIIPHY && cmd <= SIOCSMIIREG)
{
struct dpa_priv_s *priv = netdev_priv(dev);
if( priv && priv->mac_dev && priv->mac_dev->phy_dev )
{
return phy_mii_ioctl(priv->mac_dev->phy_dev, rq, cmd);
}
else
{
netdev_warn(dev, "No phy device\n");
ret = -ENODEV;
}
}

上层使用如下工具就可以读取到网络接口的PHY寄存器了：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/mii.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <linux/sockios.h>
#include <linux/types.h>
#include <netinet/in.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <unistd.h>

#define reteck(ret) \
   if(ret < 0){ \
         printf("%m! \"%s\" : line: %d\n", __func__, __LINE__); \
         goto lab; \
   }

#define help() \
printf("mdio:\n");                \
printf("read all regs: mdio if\n");       \
printf("write regAddr to value : mdio if regAddr value\n"); \
printf("For example:\n");          \
printf("mdio fm1-mac5 \n");          \
printf("mdio fm1-mac5 0 0x1234\n\n");    \
exit(0);

int sockfd;

int main(int argc, char *argv[])
{
uint16_t data = {0};
struct mii_ioctl_data *mii = NULL;
struct ifreq ifr;
int ret;
uint16_t i;

if(argc == 1 || !strcmp(argv, "-h"))
{
   help();
}

if((argc != 2) && (argc != 4))
{
   help();
}

memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, argv, IFNAMSIZ - 1);

sockfd = socket(PF_LOCAL, SOCK_DGRAM, 0);
reteck(sockfd);

//get phy address in smi bus
ret = ioctl(sockfd, SIOCGMIIPHY, &ifr);
reteck(ret);

mii = (struct mii_ioctl_data*)&ifr.ifr_data;

if(argc == 2)
{
for( i =0 ;i < 32;i++)
{
mii->reg_num= i;
//printf("mii->reg_num = %d\n",mii->reg_num);

ret = ioctl(sockfd, SIOCGMIIREG, &ifr);
reteck(ret);
data = mii->val_out;
}

printf("%s\'s phyAddr = %d\n",ifr.ifr_name,mii->phy_id);
printf("All Phy Reg as follows:\n");
printf("--------------------------------------\n");
for(i = 0 ;i < 32; i++)
{
printf("regAddr = %2d,Val = 0x%04X ",i,data);
if( ((i+1) %2) == 0)
{
printf("\n");
}
}

printf("\n");
}
else if(argc == 4)
{
   mii->reg_num= (uint16_t)strtoul(argv, NULL, 0);
   mii->val_in = (uint16_t)strtoul(argv, NULL, 0);

   ret = ioctl(sockfd, SIOCSMIIREG, &ifr);
   reteck(ret);

   printf("write phy addr: 0x%xreg: 0x%xvalue : 0x%x\n\n", mii->phy_id, mii->reg_num, mii->val_in);
}

lab:
close(sockfd);
return 0;
}

hai 发表于 2022-10-10 14:48:38

可以在uboot阶段使用如下命令读取，详细的参数还是用看芯片手册。
例：
列举PHY：mdio list
读取寄存器0： mdio read 1 0x00
读取寄存器1：mdio read 1 0x01

elephant4216 发表于 2022-10-10 16:18:55

hai 发表于 2022-10-10 14:48
可以在uboot阶段使用如下命令读取，详细的参数还是用看芯片手册。
例：
列举PHY：mdio list

在uboot阶段验证OK，感谢！

另外，请教一下，在Linux下有什么工具可用吗？
使用ethtool提示如下，不知什么原因？
root@localhost:~#
root@localhost:~# ethtool -i fm1-mac5
driver: fsl_dpa
version: 5.10.35-rt39-svn80
firmware-version: 0
expansion-rom-version:
bus-info: soc:fsl,dpaa
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no 【提示no】
supports-priv-flags: no
root@localhost:~#
root@localhost:~#
root@localhost:~# ethtool -d fm1-mac5
Cannot get register dump: Operation not supported
root@localhost:~#

hai 发表于 2022-10-12 10:20:04

elephant4216 发表于 2022-10-10 16:18
在uboot阶段验证OK，感谢！

另外，请教一下，在Linux下有什么工具可用吗？

您好，我们这边是直接使用的ethtool fm1-amc3这个命令，这个能看到网口的协商结果还有是否处于link状态等等信息。但是ls系列的是不支持在ubuntu系统中读取phy寄存器状态的。如果想读取需要您自己改驱动。
root@localhost:~# ethtool fm1-mac3
Settings for fm1-mac3:
Supported ports: [ MII ]
Supported link modes: 10baseT/Half 10baseT/Full
                        100baseT/Half 100baseT/Full
                        1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes:10baseT/Half 10baseT/Full
                        100baseT/Half 100baseT/Full
                        1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: d
Wake-on: d
Current message level: 0xffffffff (-1)
      drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol 0xffff8000
Link detected: no

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ls1046A下获取网口PHY的寄存器值