Messages in this thread | | | Date | Tue, 08 Jun 2004 18:13:59 -0400 | From | Chris Friesen <> | Subject | help with pci probing at boot time |
| |
I'm trying to boot an mcpn765 card with 2.6.5 and I seem to be running into PCI issues.
There is a calling sequence in the 765 boot that goes like this:
arch_initcall(ppc_init); ppc_md.init() mcpn765_init2() mcpn765_setup_via_82c586b()
This last function tries to find a particular VIA bridge using pci_find_device(), and if it doesn't find it it dumps an error message and halts. This is what I'm seeing.
I tried to figure out how the PCI probing thing worked (I have CONFIG_HOTPLUG=n) but I couldn't figure out the call chain. (pci_devices gets added to by pci_bus_add_devices, which gets called by pci_do_scan_bus and pci_scan_bus_parented, but neither of those seems to get called by anyone in the ppc kernel, and all other callers of pci_bus_add_devices are hotplug-related or in another architecture.)
I instrumented the PCI probing functions, and they do not seem to be called before the ppc_init path, which presents difficulties since pci_find_device() doesn't have the data it needs to actually do its job.
Any suggestions?
Chris - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |