Date: Mon, 4 Jun 2001 21:07:54 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: John Polstra <jdp@polstra.com> Cc: alpha@freebsd.org Subject: Re: SCSI devices settling and illegal request Message-ID: <15132.12522.204808.968943@grasshopper.cs.duke.edu> In-Reply-To: <200106050057.f550vcb40499@vashon.polstra.com> References: <3B1C0B05.412793BB@enetis.net> <20010604180035.A18581@arrakis.tamu.edu> <15132.9197.86824.642979@grasshopper.cs.duke.edu> <200106050057.f550vcb40499@vashon.polstra.com>
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John Polstra writes: > In article <15132.9197.86824.642979@grasshopper.cs.duke.edu>, > Andrew Gallatin <gallatin@cs.duke.edu> wrote: > > > > The only cards I've seen that give a hoot what hose they're on are > > NCR/Sym cards. I suppose video cards would need to be on the zeroth > > hose too.. > > OK, I give up. What's a "hose"? > > John Modern server-class alphas (such as DS20, xp1000, AS4100, AS4000, AS1200, etc) may have totally separate PCI buses, with separate IO and memory spaces. Like a normal bus, each of these can have ppbs to child busses, etc. We call each collection of buses a hose. This terminology comes from the SRM console. See sys/alpha/pci/tsunami_pci.c and sys/alpha/mcbus/mcpcia.c for two examples. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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