src/sys/modules/hyperv/pcib, branch release/13.2.0 FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=release%2F13.2.0 2017-03-04T10:10:17Z sys/modules: normalize .CURDIR-relative paths to SRCTOP 2017-03-04T10:10:17Z Enji Cooper ngie@FreeBSD.org 2017-03-04T10:10:17Z urn:sha1:193d9e768ba63fcfb187cfd17f461f7d41345048 This simplifies make output/logic Tested with: `cd sys/modules; make ALL_MODULES=` on amd64 MFC after: 1 month Sponsored by: Dell EMC Isilon hyperv/pcib: change the file name: pcib.c -> vmbus_pcib.c 2016-11-18T06:44:18Z Dexuan Cui dexuan@FreeBSD.org 2016-11-18T06:44:18Z urn:sha1:8c582c7c58f3400b0f5b949a9aa685a58546249f This makes the file name and the variable naming in the file consistent. Reviewed by: sephe Approved by: sephe (mentor) MFC after: 1 week Sponsored by: Microsoft hyperv/pcib: Fix the build for some kernel configs 2016-11-18T05:33:01Z Dexuan Cui dexuan@FreeBSD.org 2016-11-18T05:33:01Z urn:sha1:531582f5a9c7cb64a6fc53fe45a3716fd250feed Add the dependency on pci explicitly for the pcib and vmbus drivers. The related Makefiles are updated accordingly too. Reviewed by: sephe Approved by: sephe (mentor) MFC after: 1 week Sponsored by: Microsoft hyperv/pcib: enable PCIe pass-through (a.k.a. Discrete Device Assignment) 2016-11-16T09:25:00Z Dexuan Cui dexuan@FreeBSD.org 2016-11-16T09:25:00Z urn:sha1:871c968b3ae6904d1ce7bd08388e5c4c1498fdc9 The feature enables us to pass through physical PCIe devices to FreeBSD VM running on Hyper-V (Windows Server 2016) to get near-native performance with low CPU utilization. The patch implements a PCI bridge driver to support the feature: 1) The pcib driver talks to the host to discover device(s) and presents the device(s) to FreeBSD's pci driver via PCI configuration space (note: to access the configuration space, we don't use the standard I/O port 0xCF8/CFC method; instead, we use an MMIO-based method supplied by Hyper-V, which is very similar to the 0xCF8/CFC method). 2) The pcib driver allocates resources for the device(s) and initialize the related BARs, when the device driver's attach method is invoked; 3) The pcib driver talks to the host to create MSI/MSI-X interrupt remapping between the guest and the host; 4) The pcib driver supports device hot add/remove. Reviewed by: sephe Approved by: sephe (mentor) MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D8332