Re: [Xen-devel] RFC: [PATCH 1/3] Enhance platform support for PCI

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Fri, 2015-02-27 at 15:24 +0000, Ian Campbell wrote:

> In Linux dom0 we call it walking pci_mmcfg_list, which looking at
> arch/x86/pci/mmconfig-shared.c pci_parse_mcfg is populated by walking
> over a "struct acpi_table_mcfg"

BTW according to
http://lists.linaro.org/pipermail/fw-summit/2015-January/000070.html:

MCFG    Signature Reserved (signature == "MCFG")
        == Memory-mapped ConFiGuration space ==
        If the platform supports PCI/PCIe, an MCFG table is required.

Which for ACPI systems at least we can also parse in Xen. The contents
is in "PCI Firmware Specification, Revision 3.0" which I don't have a
copy of handy.

Ian.




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