嵌入式linux c语言实现MDIO控制，修改交叉编译，实现MDIO指令自定义

//命令说明 //mdio cmd //访问mdio寄存器 #include <stdio.h> #include <stdlib.h> #include <unistd.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> ///////////////////////////////////////////////// //main #define reteck(ret) \ if(ret < 0){ \ printf("%m! \"%s\" : line: %d\n", __func__, __LINE__); \ goto lab; \ } #define version() \ printf("mdio cmd version: %s %s by gcc %s \n",__DATE__,__TIME__,__VERSION__); \ exit(0); #define help() \ printf("mdio v1.0.0 (%s %s) \n\n",__DATE__,__TIME__); \ printf("Usage: for mdio register access\n"); \ printf(" help : mdio -h|--help|h\n"); \ printf(" version : mdio -v|v|ver\n"); \ printf(" read operation : mdio interface read phyad reg_addr\n"); \ printf(" write operation : mdio interface write phyad reg_addr value\n"); \ printf(" read all phyregs: mdio interface readphy phyad\n"); \ printf("For example:\n"); \ printf("mdio eth1 read 1 0\n"); \ printf("mdio eth1 write 1 0 0x1140\n\n"); \ printf("mdio eth1 readphy 1\n\n"); \ exit(0); int sockfd; int main(int argc, char *argv[]) { int cmd_hit=0; ///////////////////////////////////////////////// // help / version if(argc == 1 || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help") || !strcmp(argv[1], "h") ){ cmd_hit=cmd_hit+1; help(); } if(argc == 2){ if(!strcmp(argv[1], "-v") | !strcmp(argv[1], "v") | !strcmp(argv[1], "ver")){ cmd_hit=cmd_hit+1; version(); } } ///////////////////////////////////////////////// // printf(" mdio ioctrl init!\n"); struct mii_ioctl_data *mii = NULL; struct ifreq ifr; int ret; int i; uint16_t phylist[32]; memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, argv[1], 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 == 4 & !strcmp(argv[2], "readphy") ){ cmd_hit=cmd_hit+1; mii->phy_id = (uint16_t)strtoul(argv[3], NULL, 0); for (i = 0; i < 32; ++i) { mii->reg_num = i; ret = ioctl(sockfd, SIOCGMIIREG, &ifr); reteck(ret); phylist[i]=mii->val_out; } printf("PHY regs at phyaddress 0x%x:\n", mii->phy_id); for (i = 0; i < 32; ++i) { printf("%d - 0x%04x\n", i, phylist[i]); } printf("\n"); }else if(argc == 5 & (!strcmp(argv[2], "read") | !strcmp(argv[2], "r")) ) { cmd_hit=cmd_hit+1; mii->phy_id = (uint16_t)strtoul(argv[3], NULL, 0); mii->reg_num = (uint16_t)strtoul(argv[4], NULL, 0); ret = ioctl(sockfd, SIOCGMIIREG, &ifr); reteck(ret); printf("read phy addr: 0x%x reg: 0x%x value : 0x%x\n\n", mii->phy_id, mii->reg_num, mii->val_out); }else if(argc == 6 & (!strcmp(argv[2], "write") | !strcmp(argv[2], "w")) ){ cmd_hit=cmd_hit+1; mii->phy_id = (uint16_t)strtoul(argv[3], NULL, 0); mii->reg_num = (uint16_t)strtoul(argv[4], NULL, 0); mii->val_in = (uint16_t)strtoul(argv[5], NULL, 0); ret = ioctl(sockfd, SIOCSMIIREG, &ifr); reteck(ret); printf("write phy addr: 0x%x reg: 0x%x value : 0x%x\n\n", mii->phy_id, mii->reg_num, mii->val_in); } else{ printf("Info: mdio err input cmd! \n"); } lab: close(sockfd); /////////////////////////////////////////////// //未匹配到以上命令参数，则报错退出 if(cmd_hit==0){ printf(" cmd param input error and quit!\n"); } ///////////////////////////////////////////////// return 0; }