On Wed, Dec 08, 2004 at 05:10:54PM -0800, Chris Love wrote: > Hi folks, > > We have an Ocotea reference board (PPC 440GX) w/256M and have > tried running both stable 2.4.26 and 2.6.10-rc3 kernels from > penguinppc.org. For now the bootloader is still PIBS, though > we'll get U-Boot installed shortly. > > As a first experiment we've tried installing a legacy card > with an Intel 82559 device on it. The warning seen from > pci_setup_device() suggests that PCI config space wasn't > read cleanly: a header type of 0x7f is encountered. Nothing > shows up under /proc/bus/pci. The card we'd actually like to > install has a transparent bridge (Intel 21152) and other devices > behind the bridge. Both cards are PCI-33 versus PCI-X.
Sounds like something is wrong with your hardware configuration. > To ask some really stupid questions first: what is the state of > PCI support with linux on this board? Have others tried to do > something like this with 33/66 Mhz PCI devices or am I in > uncharted waters? No, this works fine for many other people, so don't get too worried. Do verify that you have jumpered for 33Mhz operation since you are using a 33Mhz device. PIBS should warn you about this and advise to make the change, but maybe you have a different version than I've seen. What rev. ocotea board and version of PIBS do you have? > Of the PCI #defines in platforms/ocotea.h I can correlate most > with data from the user's manual, but not the following: > > #define OCOTEA_PCI_LOWER_IO 0x00000000 > #define OCOTEA_PCI_UPPER_IO 0x0000ffff > #define OCOTEA_PCI_LOWER_MEM 0x80000000 > #define OCOTEA_PCI_UPPER_MEM 0xffffefff > > Is there some documentation I'm missing on these values? The code is self-documenting as they say. :) These are the address ranges used by the pci_auto code to assign base addresses to each BAR that is encountered. -Matt
