taglinefilesource code
tPIO693drivers/block/cmd640.cmax_pio = id->tPIO;
tPIO1076drivers/block/ide-tape.cprintk ("PIO Cycle Timing Category: %d\n",id->tPIO);
tPIO128drivers/block/ide_modes.hpio = (id->tPIO < 2) ? id->tPIO : 2;
tPIO130include/linux/hdreg.hunsigned char  tPIO;    /* 0=slow, 1=medium, 2=fast */