Hi, Am 15.03.2014 22:21, schrieb BALATON Zoltan: > I'm trying to change hw/ppc/mac_newworld.c and hw/pci-host/uninorth.c to > bring the mac99 machine type closer to what's seen in these dumps: > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=604134 > http://nandra.segv.jp/NetBSD/G4.dump-device-tree.txt > http://raveland.org/ports/eeprom.txt > http://mail-index.netbsd.org/port-macppc/2007/10/24/0000.html > > This machine seems to have 3 pci busses but the third is not important > just the other two: > > ff8721c0: /pci@f0000000 > ff898cd0: /uni-north-agp@b > ff898f40: /ATY,Rage128Ps@10 > ff873268: /pci@f2000000 > ff8742d8: /pci-bridge@d > ff876368: /mac-io@7 > > The first is actually an AGP bus with the onboard graphics card and the > second is where other devices are. It would be enough to create an empty > bus without the AGP graphics card for now and have the devices on the > second bus. The pci_pmac_init function in uninorth.c seems to have some > commented out code to try to model this but that does not work. Can > someone who understands this better please explain what should be done > to model the above? How to create two pci buses and connect them to > separate memory regions?
In earlier times QEMU did not properly support multiple PCI bus domains. Some code in http://git.qemu.org/?p=qemu.git;a=blob;f=hw/pci-host/uninorth.c;h=e72fe2a70b954bf5675ad0c8735fea6bad665be6;hb=HEAD is #if 0'ed out that you should take a look at. I had investigated that some time ago based on a G4 in our office and might be able to revive some patches... Please keep me CC'ed. Cheers, Andreas -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
