Re: Cannot access PCI device

[Paul Mackerras]

Zehetbauer Thomas writes:

> Hi! I am trying to access a custom PCI device on a Walnut Rev. D system
> running Hard Hat Linux Rev. 1.2 with Montavista kernel snapshot
> 01.04.12. The following code is beeing executed in the probe function of
> a kernel module and works well on Linux 2.4.2/Intel but returns useless
> values on PowerPC.

What kernel version is this?  We have fixed a few bugs in the PCI code
on PPC lately.

> ### begin ppc result ###
> Found PCI device 10ee:4030 (Xilinx, Inc.)
> pci_resource_start=10000000
> pci_resource_end=0
> PCI_BASE_ADDRESS_0=ffff0000

This looks bogus, it looks like the firmware hasn't assigned an
address to this device.  Current PPC kernels should assign a
reasonable address in this case - this is something that has been
fixed since 2.4.2 came out.

Paul.