Date: Tue, 3 Dec 2002 00:34:21 -0800 (PST) From: Warner Losh <imp@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/pci pci_pci.c Message-ID: <200212030834.gB38YLFX017766@repoman.freebsd.org>
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imp 2002/12/03 00:34:21 PST
Modified files:
sys/dev/pci pci_pci.c
Log:
Properly account for prefetchable memory when a request is being made.
We allow the request to go through if it matches either a prefetchable
or a non-prefetchable part of the bridge. We do not check to make
sure it is the right kind of memory because most drivers to not yet
properly set RF_PREFETCHABLE (only cardbus seems to do so, and I'm not
entirely sure it does it right). RF_PREFETCHABLE was invented for
cardbus, so hasn't been properly documented yet.
This is still overridable by hw.pci.allow_unsupported_io_ranges, but
the need for that is greatly reduced, especially for the nvida driver.
Approved by: re
Reviewed by: jhb and many testers
Submitted by: Matt Emmerton (although this has been reworked somewhat)
Revision Changes Path
1.22 +112 -47 src/sys/dev/pci/pci_pci.c
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