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Jens, Thanks for the hint. I see. It is consistent with the other QUEUED commands. I'll stop asking here. ;-) Alex. > Date: Fri, 29 Jul 2005 10:56:57 +0200 > From: "Jens Axboe" <[EMAIL PROTECTED]> > To: "Alexander Krebs" <[EMAIL PROTECTED]> > cc: [email protected] > Subject: Re: [t13] sector count in FPDMA commands > > On Fri, Jul 29 2005, Alexander Krebs wrote: > > This message is from the T13 list server. > > > > > > Hi all, > > > > Could anybody please explain why the Features registers hold the > > sector count whereas the Sector Count registers hold the tag for the > > READ/WRITE FPDMA QUEUED commands? This looks weird to me. > > I can only guess for historic reasons, legacy queueing with > READ/WRITE_DMA_QUEUED also have that register layout. > > And yay for the FUA bit in the FPDMA commands, if only we could finally > get one of the reserved bits as an ORDERED bit SATA could finally be as > useful as SCSI for ordered writes. > > -- > Jens Axboe > >
