Date: Sun, 20 Oct 2002 12:30:17 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: phk@critter.freebsd.dk Cc: dillon@apollo.backplane.com, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: [src] cvs commit: src/sys/i386/pci pci_bus.c Message-ID: <20021020.123017.75895671.imp@bsdimp.com> In-Reply-To: <53727.1035138112@critter.freebsd.dk> References: <20021020.122029.53328411.imp@bsdimp.com> <53727.1035138112@critter.freebsd.dk>
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In message: <53727.1035138112@critter.freebsd.dk>
Poul-Henning Kamp <phk@critter.freebsd.dk> writes:
: In message <20021020.122029.53328411.imp@bsdimp.com>, "M. Warner Losh" writes:
:
: >I susepct the right fix is:
: >
: > if (id == 0xffffffff)
: > continue;
:
: The question is if we want to have a
: #define PCI_NOTHING 0xffffffff
: somewhere...
We'd need it for each width. The PCI standard defines that no
hardware decoding the address is to return 0xff for each of the bytes
read.
PCI_NOTHING_32
PCI_NOTHING_16 and
PCI_NOTHING_8
seems a little silly to me.
Warner
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