Konstantin Belousov 3c700e2e4c Enhance qpi.c to make it usable on all Core-microarchitecture Xeons. ... Scan all buses for CSR bus, not stopping on the first failed match. Scan all slots for function 0 on the found bus, for instance on IvyBridge the slot 0 is not decoded at all. Since the scan is quite unsafe, and access to the buses is mostly useful for developers, enable the csr buses scan with the tunable. Current qpi.c makes too many assumptions about the uncore configuration buses location and about slots occupied. Also it restricts itself only to Nehalem CPUs. It is needed on all Core-based Xeons. On the 2600 v2 (IvyBridge) machine I have access to, the CSR buses have numbers 31 (BSP socket) and 63 (second socket), and there is no functions pci0.31.0.0 or pci0.63.0.0. According to the CPU datasheet, all devices on the uncore bus occupy slots >= 8. Practically, the attach to config buses is required for the intel-pcm pcm-memory.x tool to work, for instance. Reviewed by: jhb (previous version) Sponsored by: Mellanox Technologies MFC after: 1 week Differential revision: https://reviews.freebsd.org/D12268		2017-09-08 19:51:03 +00:00
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pci_bus.c	Convert PCIe Hot Plug to using pci_request_feature	2017-02-25 06:11:59 +00:00
qpi.c	Enhance qpi.c to make it usable on all Core-microarchitecture Xeons.	2017-09-08 19:51:03 +00:00