Date: Sun, 09 Aug 2009 20:25:49 +0900 (JST) From: Takahashi Yoshihiro <nyan@jp.FreeBSD.org> To: mav@freebsd.org Cc: freebsd-arch@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Do we still need ATA disk CHS addressing? Message-ID: <20090809.202549.27838630.nyan@jp.FreeBSD.org> In-Reply-To: <4A7DF076.4070203@FreeBSD.org> References: <4A7DF076.4070203@FreeBSD.org>
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In article <4A7DF076.4070203@FreeBSD.org> Alexander Motin <mav@freebsd.org> writes: > 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. > > Have anybody seen ATA drive without LBA support in last years? > Any other objections against removing it? 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. --- TAKAHASHI Yoshihiro <nyan@jp.FreeBSD.org>
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