Date: Thu, 18 Sep 2003 10:04:36 -0700 (PDT) From: Nate Lawson <nate@root.org> To: John Baldwin <jhb@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/include pci_cfgreg.h Message-ID: <20030918100414.I15008@root.org> In-Reply-To: <20030918170037.A8FF116A591@hub.freebsd.org> References: <20030918170037.A8FF116A591@hub.freebsd.org>
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On Thu, 18 Sep 2003, John Baldwin wrote: > Modified files: > sys/i386/include pci_cfgreg.h > Log: > Fix a busted constant related to PCI configuration acess method #1. The > reserved bits in the port that must be zero are 24:30, not 20:30. Bits > 16:23 are used to set the bus number. This meant that when we tested for > config mechanism #1, if the previous PCI configuration transaction sent > used a bus number greater than 15, one of the bits in 20:23 would be > non-zero and we would fail to use config mechanism #1 and thus fail to see > that PCI existed on the machine at all. > > Obtained from: Shanley's PCI System Architecture book > Tested by: des > Proxied through: njl > > Revision Changes Path > 1.10 +1 -1 src/sys/i386/include/pci_cfgreg.h Excellent! -Nate
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