On Monday 09 December 2013, Catalin Marinas wrote:
CONFIG_PCI does not exist on arm64 yet (we have some internal patches but may not be ready to be posted before the holidays; they try to share code with other archs, so more discussions before merging). We could add CONFIG_PCI and some dummy functions on arm64 for development (not to be upstreamed) or Hanjun could continue to use the current patch before we get PCI working. In the order of priorities, we'll have to merge PCI before ACPI anyway.
Well, lack of PCI support on ARM64 is a much better reason for accepting the patch than potential use on non-server platforms of course.
What is the status of the PCI work though? I suspect it won't be all that hard to add minimal PCI support for a simple mmconfig plus fixed I/O space based host of the kind that qemu can easily provide.
The hard part that we want to share code with other architectures is supporting pluggable host controllers, and I think we can defer that a bit.
Arnd