Date: Sun, 9 Aug 2009 15:47:24 +0200 From: Ed Schouten <ed@80386.nl> To: Takahashi Yoshihiro <nyan@jp.FreeBSD.org> Cc: mav@freebsd.org, freebsd-hardware@freebsd.org, freebsd-arch@freebsd.org Subject: Re: Do we still need ATA disk CHS addressing? Message-ID: <20090809134724.GX1292@hoeg.nl> In-Reply-To: <20090809.202549.27838630.nyan@jp.FreeBSD.org> References: <4A7DF076.4070203@FreeBSD.org> <20090809.202549.27838630.nyan@jp.FreeBSD.org>
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--82NP6SxOLIStdcnZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Takahashi Yoshihiro <nyan@jp.FreeBSD.org> wrote: > In article <4A7DF076.4070203@FreeBSD.org> > Alexander Motin <mav@freebsd.org> writes: >=20 > > While preparing wrapping ATA(4) low-level drivers code into CAM SIM, I > > would like to remove CHS addressing support to make code cleaner. CHS > > addressing is officially declared obsoleted and replaced by LBA. Since > > ATA/ATAPI-6 specification (October 2001) it is even no longer > > documented. > >=20 > > Have anybody seen ATA drive without LBA support in last years? > > Any other objections against removing it? >=20 > PC98 uses CHS addressing because the internal interface works for very > old HDD only, so I hope it remains if possible. But if you need a lot > of works for CHS support, I agree to remove it. Wouldn't it be possible to keep the old ATA code in the tree for users who want to use stuff like this? --=20 Ed Schouten <ed@80386.nl> WWW: http://80386.nl/ --82NP6SxOLIStdcnZ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEARECAAYFAkp+02sACgkQ52SDGA2eCwX+WgCfUg1hvFE15FXG3FU/VQz+khir ks4An2iOA1oAzUKd2O+oGONmX0hGacCM =xRVr -----END PGP SIGNATURE----- --82NP6SxOLIStdcnZ--
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