Re: [QUESTION] 440EPx with PCI to PCIe bridge error
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2009-01-05 21:18:50
On Mon, 2009-01-05 at 15:09 -0500, Steven A. Falco wrote:
I have a Sequoia board (440EPx) with kernel 2.6.27.9. I've recently plugged in a PLX adapter board to convert one of the PCI connectors on the Sequoia to PCIe. When the kernel boots, I get the following error messages regarding mem resource allocation. Device 0000:00:0c.0 is the PCI<->PCIe bridge, and device 0000:01:00.0 is an FPGA PCIe evaluation board.
Please enable DEBUG in arch/powerpc/kernel/pci-common.c and pci_32.c and send us a full log. It might also be useful to do that on top of 2.6.28 in case some of the changes that went in after .27 make a difference. I think I'll turn those DEBUG into something that can be enabled from the kernel command line one of these days :-) Cheers, Ben.
PCI host bridge /plb/pci@1ec000000 (primary) ranges: MEM 0x0000000180000000..0x000000018fffffff -> 0x0000000080000000 IO 0x00000001e8000000..0x00000001e80fffff -> 0x0000000000000000 4xx PCI DMA offset set to 0x00000000 PCI: Probing PCI hardware PCI: Hiding 4xx host bridge resources 0000:00:00.0 pci 0000:00:0c.0: PME# supported from D0 D1 D3hot pci 0000:00:0c.0: PME# disabled pci 0000:00:0c.0: BAR 8: can't allocate mem resource [0x180000000-0x18fffffff] pci 0000:01:00.0: BAR 1: can't allocate mem resource [0x1f0000000-0x1ffffffff] pci 0000:01:00.0: BAR 0: can't allocate mem resource [0x180000000-0x18007ffff] pci 0000:00:0c.0: PCI bridge, secondary bus 0000:01 pci 0000:00:0c.0: IO window: disabled pci 0000:00:0c.0: MEM window: disabled pci 0000:00:0c.0: PREFETCH window: disabled Plain PCI cards plugged directly into the Sequoia work fine. Is there something I have to add to the .dts file to represent the PCI<->PCIe bridge? Thanks, Steve _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev