Date: Wed, 6 Oct 2004 07:22:58 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/pci pci_bus.c Message-ID: <200410060722.i967MwsJ014694@repoman.freebsd.org>
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imp 2004-10-06 07:22:58 UTC
FreeBSD src repository
Modified files:
sys/i386/pci pci_bus.c
Log:
For legacy PCI bridges, limit memory allocation to the top 32MB of
RAM. Many older, legacy bridges only allow allocation from this
range. This only appies to devices who don't have their memory
assigned by the BIOS (since we allocate the ranges so assigned
exactly), so should have minimal impact.
Hoewver, for CardBus bridges (cbb), they rarely get the resources
allocated by the BIOS, and this patch helps them greatly. Typically
the 'bad Vcc' messages are caused by this problem.
Revision Changes Path
1.113 +24 -4 src/sys/i386/pci/pci_bus.c
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