ATA_PACKET_CMD
fis[2] = ATA_PACKET_CMD;
ATA_IDX_OUTB(ch, ATA_COMMAND, ATA_PACKET_CMD);
fis[2] = ATA_PACKET_CMD;
ATA_OUTB(ch->r_mem, ATA_COMMAND, ATA_PACKET_CMD);
fis[2] = ATA_PACKET_CMD;
fis[2] = ATA_PACKET_CMD;
case ATA_PACKET_CMD: