Date: Thu, 3 Aug 2006 16:01:01 -0600 From: "Sean Thomson" <psthomso@hotmail.com> To: =?iso-8859-1?Q?S=F8ren_Schmidt?= <sos@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: RE: Question on SATA Hotplug, NCQ and Port Multiplier support Message-ID: <BAY102-W6E880361B34036ADE267CCE530@phx.gbl>
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> Sean Thomson wrote:> > Howdy Folks,> > > > I'm trying to find out what t= he current/future support for SATA hotplug,=20 > > NCQ, and Port Multiplier is. Specifically, I'm tied to intel's ICH9 SAT= A controller=20 > >and pegged to implement the features if they aren't planned or available= . That=20 > > last part is up in the air, pending what I find out and how long it'll = take.> > > > After poking around the mailing list, I found that Soren had = mentioned=20 > > that he is working on NCQ and I can really only find references to > > hot plug in the context of RAID. Is hot plug generally supported for=20 > > controllers that support it? From experience in another OS, port=20 > >multiplier was not even on the radar as nobody was asking for=20 > > it, so I'm guessing that the level of interest is just as low here.> > = > > Anyway, any guidance would be greatly appreciated!> > > SATA hotplug= /hotremoval is implemented for all chips I have access to > and that suppor= ts it.> > NCQ is planned and in the works but not for general consumption y= et.> Port multipliers, well, I have had lots of trouble even locating someo= ne > that actually has one, but a couble of days ago I got the word from on= e > of our supporting vendors that an evalution version should be in the > = mail, more to follow on that as things unfold.> > Both NCQ and portmultipli= ers needs support from the chipset, so it > depends on those features being= present and that I can get docs on how > its done. Docs are lacking here a= s usual, but at least chips that does > AHCI (Intel, JMicron and VIA) and P= romise chips will be supported.> > -S=F8ren> > =20 Thanks S=F8ren, I appreciate the response. The chipset is an intel AHCI chi= pset,=20 so its covered. =20 As far as the port multiplier is concerned, I found one by Silicon Image=20 (CGS-3726-A1). It should work. If you don't get one from your supporting vendor, let me know and I'll see if I can get the one I just mentioned =20 thanks! Sean _________________________________________________________________ Try Live.com: where your online world comes together - with news, sports, w= eather, and much more. http://www.live.com/getstarted=
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