Am 17.03.2014 23:14, schrieb BALATON Zoltan: > On Mon, 17 Mar 2014, Andreas Färber wrote: >> 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've seen these #if 0'ed parts but just enabling them does not seem to > be enough. I don't know enough about how should all this work and found > no documentation or examples to follow so I hope someone can explain > what it takes to create two pci buses (so devices added to the first get > 0:dev:func and those added to the second get 1:dev:func addresses) and > these busses have their Cfg/IO/MMIO space mapped to different addresses. > The patch I came up with so far did not work. The pci buses and memory > map from the dumps I've seen should look like this: > > 0000:00:0b.0 Host bridge [0600]: Apple Computer Inc. UniNorth AGP > [106b:0020] > 0000:00:10.0 VGA compatible controller [0300]: ATI Technologies Inc > Radeon R200 QL [Radeon 8500 LE] [1002:514c] > > 0001:10:0b.0 Host bridge [0600]: Apple Computer Inc. UniNorth PCI > [106b:001f] > 0001:10:0d.0 PCI bridge [0604]: Digital Equipment Corporation DECchip > 21154 [1011:0026] (rev 05) > 0001:11:07.0 Unassigned class [ff00]: Apple Computer Inc. KeyLargo Mac > I/O [106b:0022] (rev 02) > > corresponding to this openfirmware tree: > > ff8721c0: /pci@f0000000 > ff898cd0: /uni-north-agp@b > ff898f40: /ATY,Rage128Ps@10 > ff873268: /pci@f2000000 > ff8742d8: /pci-bridge@d > ff876368: /mac-io@7 > > and the memory mapping is: > > 80000000-8fffffff : /pci@f2000000 > 80000000-800fffff : PCI Bus 0001:11 > 80000000-8007ffff : 0001:11:07.0 > 80000000-8007ffff : 0.80000000:mac-io > > 90000000-9fffffff : /pci@f0000000 > 90000000-9000ffff : 0000:00:10.0 > 90000000-9000ffff : radeonfb mmio > > f1000000-f1ffffff : /pci@f0000000 > f3000000-f3ffffff : /pci@f2000000 > >> 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. > > If you have any info/patches for this they are very welcome.
Just stumbled over a text file of our G4: --->8--- 0000:00:0b.0 Apple Computer Inc. UniNorth AGP [106b:0020] 0001:10:0b.0 Apple Computer Inc. UniNorth PCI [106b:001f] 0001:10:0d.0 Digital Equipment Corporation DECchip 21154 [1011:0026] 0002:21:0b.0 Apple Computer Inc. UniNorth Internal PCI [106b:001e] --->8--- The first three match yours, but I have an additional internal PCI. Cheers, Andreas P.S. Forgot to mention, do not add #if 0s in patches. Either keep code compiling or drop it properly. Otherwise it will bit-rot. -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
