Date: Fri, 29 May 2009 18:13:58 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Alexander Motin <mav@freebsd.org> Cc: freebsd-amd64@FreeBSD.org Subject: Re: amd64/135040: FreeBSD/amd64 does not (always) detect disk on SB600/AliveXFire eSata 2 Message-ID: <200905291814.14876.jkim@FreeBSD.org> In-Reply-To: <200905292150.n4TLo4Ws090322@freefall.freebsd.org>
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On Friday 29 May 2009 05:50 pm, Alexander Motin wrote: > I have installed 4GB RAM into my ICH9 based system and it works > fine. 64bit support is optional for AHCI controllers. It is > controlled by one of capability bits and driver honors that flag. > But as I can see, Linux explicitly disables 64bit support for SB600 > controller, so it may be hardware problem. You can try to force > 32bit mode by commenting last two lines of ata_ahci_dmainit() > function. The Linux patch was reverted by an AMD developer and replaced with a BIOS quirk few days ago: http://thread.gmane.org/gmane.linux.ide/41082/ Basically, AMD says this is not a chip bug. FYI... Jung-uk Kimhome | help
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