On Tue, Nov 29, 2016 at 03:39:48PM -0600, Bjorn Helgaas wrote:
Here's another stab at this writeup. I'd appreciate any comments!
Changes from v1 to v2:
- Consumer/Producer is defined for Extended Address Space descriptors; should be ignored for QWord/DWord/Word Address Space descriptors
- New arches may use Extended Address Space descriptors in PNP0A03 for bridge registers, including ECAM (if the arch adds support for this)
- Add more details about MCFG and _CBA (Lv's suggestion)
- Incorporate Rafael's suggestions
Bjorn Helgaas (1): PCI: Add information about describing PCI in ACPI
Documentation/PCI/00-INDEX | 2 Documentation/PCI/acpi-info.txt | 180 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 182 insertions(+) create mode 100644 Documentation/PCI/acpi-info.txt
It's very late in the cycle, but I'm considering trying to squeeze this into v4.9 on the grounds that:
- It's only a documentation change and can't break anything, and
- Distributing it more widely may help the arm64 firmware ecosystem
But I don't want to disseminate misleading or incorrect information, so if it needs clarification or wordsmithing, or even just maturation, I'll wait until v4.10.
The Consumer/Producer stuff, in particular, doesn't seem 100% settled yet. Your thoughts, and especially your improvements, are welcome!
Bjorn