_CMD
_META|_CMD|_PUN,_PUN, _PUN, _CTR,
_DOL|_PUN, _PUN, _META|_CMD|_PUN,_QF|_PUN,
_META|_CMD|_PUN,_META|_PUN, _GLOB|_PUN, _PUN,
_DIG|_XD, _DIG|_XD, _PUN, _META|_CMD|_PUN,
#define iscmdmeta(c) cmap(c, _CMD)
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_IDLE);
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_STANDBY);
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_CHKPWR);
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_IDENT);
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_SETF);
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_READ_EXT);
CSR_WRITE_1(chan->cmd + _CMD, ATA_CMD_READ);