From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erik Slagter Subject: Re: libata and PATA devices Date: Thu, 11 Aug 2005 12:17:20 +0200 Message-ID: <1123755440.4226.28.camel@localhost.localdomain> References: <200508071949.03782.inform@tiker.net> <42F6B8CD.4050100@gmail.com> <20050808030239.GA27502@havoc.gtf.org> <1123495856.22328.62.camel@localhost.localdomain> <42F8B41C.4040408@rtr.ca> <42FACCA8.6050408@pobox.com> <1123753051.4226.22.camel@localhost.localdomain> <58cb370e05081103031cb9ccdb@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-+jBXhtTUyxt1t+AtVqnK" Return-path: Received: from oldconomy.demon.nl ([212.238.217.56]:16049 "EHLO artemis.slagter.name") by vger.kernel.org with ESMTP id S964868AbVHKKSF (ORCPT ); Thu, 11 Aug 2005 06:18:05 -0400 In-Reply-To: <58cb370e05081103031cb9ccdb@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Bartlomiej Zolnierkiewicz Cc: Jeff Garzik , Mark Lord , linux-ide@vger.kernel.org --=-+jBXhtTUyxt1t+AtVqnK Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2005-08-11 at 12:03 +0200, Bartlomiej Zolnierkiewicz wrote: > > > > Most current laptops ship with a PATA hard drive, and a PATA > > > > ATAPI drive. The easiest way to make them usable under Linux-2.6 >=20 > New laptops rather ship with: >=20 > SATA (or PATA + bridge) hard disk and PATA ATAPI drive How do I find out? As ICH6M features both PATA and SATA connections, I don't see why they'd use a PATA bridge... The DVD drives use PATA anyway, btw. > > You are sort of contradicting yourself. My setup (Dell laptop with ICH6= M > > and PATA harddisk) defaults to using libata for the PATA hardisk. Only > Are you sure? Yes I am sure. I can give you all the data to verify it yourself. > I suspect that you have SATA-PATA converter inside the laptop That would be a possibility, but I don't why. > (or you are simply not using vanilla kernel). You bet I always use vanilla kernels. > > with a specific patch (which adds the PCI id to the IDE driver's id > > list, and which was not quite accepted here) the IDE driver will > > recognise the ICH6M and use it (and then it works fine). >=20 > Yes, current situation with ICH6M support really sucks as many laptops > are set to use combined mode and don't have BIOS option to disable it Yeah, grmbl. > so users end up with unusable ATAPI device (=3D=3D limited to PIO mode > only because DMA region is already reserved by libata and cannot be > used by IDE driver). But with the patch (that adds the ID to the IDE driver), it all works. > OTOH IDE driver should handle combined mode just fine and provide=20 > working ATAPI DMA (+ SMART support for HDD). I prefer to not go > this way but the libata development is *extremely* slow (I'm not blaming > anyone just stating the fact)... I guess you have a quite bunch of users willing to test here ;-) --=-+jBXhtTUyxt1t+AtVqnK Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) iD8DBQBC+yWwJgD/6j32wUYRAn0zAJwJTvMoGZPn4VtZ2KOYBps/o0lDMwCfYKst 4rdTuHUtDFRQlNWJONK5IkI= =oZBH -----END PGP SIGNATURE----- --=-+jBXhtTUyxt1t+AtVqnK--