Date: Sun, 19 Mar 2000 17:34:05 -0500 From: "David E. Cross" <crossd@cs.rpi.edu> To: Warner Losh <imp@village.org> Cc: "David E. Cross" <crossd@cs.rpi.edu>, Doug Rabson <dfr@nlsystems.com>, freebsd-new-bus@FreeBSD.ORG, crossd@cs.rpi.edu Subject: Re: when is dinfo instantiated? Message-ID: <200003192234.RAA71131@cs.rpi.edu> In-Reply-To: Message from Warner Losh <imp@village.org> of "Sun, 19 Mar 2000 12:58:06 MST." <200003191958.MAA08753@harmony.village.org>
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> I'm confused here. The pci bus' parent will need to set the ivars > for the bus instance. The pci bus' parent is generally the nexus, > which doesn't set ivar information for the child instance. > > : Am I making an icorrect assumption that I should be able to get information > : for a PCI bus from this interface? > > Maybe. Are you expecting the parent pci bus to set the idev for the > child pci bus that you are looking at? Are you confusing parent and > child? > > The pci_probe routine will call pci_add_children to add children for > each of the slots on the pci bus. If a slot has a config, then that > child is added as a child of pci and its config info is set as the > ivar for the child, and pci_add_resources is called to populate the > child's resource structures. > > I think that the bridge chip will have the ivars of the parent bus, > but that bridge chip doesn't set ivars for the child pci bus that it > creates, nor should it. Maybe this is what you are running into. Ok... I think I am following this :) Basically, what I need is the type 1 header config for this bridge chip that a particular 'pci_attach()' is being called on behalf of. -- David Cross | email: crossd@cs.rpi.edu Acting Lab Director | NYSLP: FREEBSD Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd Rensselaer Polytechnic Institute, | Ph: 518.276.2860 Department of Computer Science | Fax: 518.276.4033 I speak only for myself. | WinNT:Linux::Linux:FreeBSD To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-new-bus" in the body of the message
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