Subject: [PATCH V3 00/21] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI

From: [email-masked] (Jeremy Linton)
Date: Thu, 14 Jan 2016 16:55:34 -0600

On 01/13/2016 07:20 AM, Tomasz Nowicki wrote:
>  From the functionality point of view this series might be split into the
> following logic parts:
> 1. Make MMCONFIG code arch-agnostic which allows all architectures to collect
>     PCI config regions and used when necessary.
> 2. Move non-arch specific bits to the core code.
> 3. Use MMCONFIG code and implement generic ACPI based PCI host controller driver.
> 4. Enable above driver on ARM64
>
> Patches has been built on top of 4.4 and can be found here:
> git at github.com:semihalf-nowicki-tomasz/linux.git (pci-acpi-v3)

I boot tested this on JunoR2 with a recent build of Tianocore EDK2.

It works enough to boot the machine with PCIe attached sata, and 
ethernet, but is throwing messages like:

[    1.094643] pci 0000:00:00.0: BAR 13: no space for [io  size 0x2000]
[    1.101022] pci 0000:00:00.0: BAR 13: failed to assign [io  size 0x2000]

Its also throwing:

[    1.029958] pci 0000:00:00.0: of_irq_parse_pci() failed with rc=-22
[    1.052784] pci 0000:00:00.0: of_irq_parse_pci() failed with rc=-22

(see other response for the DwordIo resource i'm using).