anyone tried this? it seems they are used in some rackmount Apple machines and Dell 2650.
On 2009/05/23 00:51, Brad wrote: > I've had some of these diffs sitting around for awhile so I might as well > post them.. > > > Limit the BCM5701 B5 chipset to 32-bit mode as a workaround for a bug which > causes data corruption in combination with certain bridges. > > http://www.freebsd.org/cgi/query-pr.cgi?pr=128833 > > From FreeBSD > > > Index: if_bge.c > =================================================================== > RCS file: /cvs/src/sys/dev/pci/if_bge.c,v > retrieving revision 1.258 > diff -u -p -r1.258 if_bge.c > --- if_bge.c 3 Dec 2008 23:51:52 -0000 1.258 > +++ if_bge.c 15 Dec 2008 21:18:08 -0000 > @@ -1329,6 +1232,16 @@ bge_chipinit(struct bge_softc *sc) > #endif > > /* > + * BCM5701 B5 have a bug causing data corruption when using > + * 64-bit DMA reads, which can be terminated early and then > + * completed later as 32-bit accesses, in combination with > + * certain bridges. > + */ > + if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5701 && > + sc->bge_chipid == BGE_CHIPID_BCM5701_B5) > + BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_FORCE_PCI32); > + > + /* > * Disable memory write invalidate. Apparently it is not supported > * properly by these devices. > */ > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean.
