VGE_MIICMD
CSR_WRITE_1(sc, VGE_MIICMD, 0);
CSR_WRITE_1(sc, VGE_MIICMD, 0);
CSR_WRITE_1(sc, VGE_MIICMD, VGE_MIICMD_MAUTO);
CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_RCMD);
if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_RCMD) == 0)
CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_WCMD);
if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_WCMD) == 0)