From: Dave Eckhardt <davide+p9@cs.cmu.edu>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Install: SATA
Date: Fri, 16 Sep 2005 12:12:22 -0400 [thread overview]
Message-ID: <18774.1126887142@piper.nectar.cs.cmu.edu> (raw)
In-Reply-To: <d64a489805091607527b7120a1@mail.gmail.com>
> It seems the install disk does not recognize my SATA disk.
While SATA controllers speak essentially the old IDE
protocol over the new wire to the disk, most/many of
them speak an entirely different protocol over the PCI
bus to the CPU than the old IDE register/value set,
meaning you need not just a new driver but N new drivers,
one per SATA chipset manufacturer. Progress!
The one exception I know of is the "Silicon Image SiI
3112 SATALink" which you can buy in cards from SIIG
(doubtless others). A trivial patch to the existing
Plan 9 IDE driver makes that chip *almost* work for
me (DMA is busted). If somebody wants I'll submit it
(before poking at the DMA problem, which is why I've
been holding off, which will take a while).
Dave Eckhardt
prev parent reply other threads:[~2005-09-16 16:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-16 14:52 Aaron Griffin
2005-09-16 16:12 ` Dave Eckhardt [this message]
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