> > > > WDC_ is for ata/atapi, ATA_ is for ata only.
> > > 
> > > Yes.
> > > I didn't check recently, but I don't think there are atapi-specific bits yet
> > > (at last not in our atareg.h file)
> > 
> > we have ATA_CMD2_APM, ATA_CMD2_CFA, ATA_CMD2_RWQ.
> > all of them are not atapi specific, IIRC.
> 
> No, these are ATA specific. 

i misread your argument, sorry.
then, WDC_CAP_LBA48 and WDC_CAP_QUEUE should be renamed, right?
i doubt if separated flags for "enabled" registers are needed, though.

YAMAMOTO Takashi