REG_PAUSE_CFG
{ REG_PAUSE_CFG(0), 0x00000000 },
{ REG_PAUSE_CFG(1), 0x00000000 },
{ REG_PAUSE_CFG(2), 0x00000000 },
{ REG_PAUSE_CFG(3), 0x00000000 },
vsc_read(mac->adapter, REG_PAUSE_CFG(port), &v);
vsc_write(mac->adapter, REG_PAUSE_CFG(port), v);