Date: Sat, 17 Jun 2000 11:19:13 -0700 From: Mike Smith <msmith@freebsd.org> To: =?ISO-8859-1?Q?G=E9rard_Roudier?= <groudier@club-internet.fr> Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: does the sym driver work with the xp1000 pci scsi controller? Message-ID: <200006171819.LAA00811@mass.osd.bsdi.com> In-Reply-To: Your message of "Sat, 17 Jun 2000 00:47:47 %2B0200." <Pine.LNX.4.10.10006170021340.2159-100000@linux.local>
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> > > > 4.0R HARDWARE.TXT? The only thing that I wrote in there that faintly appears > > > > relevant is: > > > > > > > > "Expansion: > > > > Don't try to use NCR/Symbios-chip based SCSI adapters in the PCI slots > > > > connected to hose 1. There is a not-yet-found FreeBSD bug that prevents this > > > > from working correctly. Not all VGA cards will work behind the PCI-PCI > > > > bridge (so in slots 4 & 5). Only cards that implement VGA-legacy adressing > > > > correctly will work. Workaround is to put the VGA card 'before' the bridge." > > Putting a VGA card behind a PCI-to-PCI bridge is probably not that clever, > but it does not seem that 2127X (Xÿ) core logics used with 21264's > utilize a PCI-to-PCI bridge for PCI BUS #1 (I mean both PCI BUS > controllers seem to be attached to the system BUS). Note that I have been > unable to find any detailed documentation about core logics used for the > 21264, so I may be just wrong on that point. :( It varies between systems. The above comment is based on my experiences with a DS20, which has two hoses, each directly connected to the nexus, each hose feeding a PCI bus. The VGA issue is so bad that even the SRM can't use a card that's not on hose 0. The Symbios issue may or may not be our fault (I think it probably is), and until we can be sure about that it's not worth a witchunt. -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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