- Create skeleton and add basic functionality for the Hyper-V
compute device driver (dxgkrnl).
- Register for PCI and VMBus driver notifications and handle
initialization of VMBus channels.
- Connect the dxgkrnl module to the drivers/hv/ Makefile and Kconfig
- Create a MAINTAINERS entry
A VMBus channel is a communication interface between the Hyper-V guest
and the host. The are two type of VMBus channels, used in the driver:
- the global channel
- per virtual compute device channel
A PCI device is created for each virtual compute device, projected
by the host. The device vendor is PCI_VENDOR_ID_MICROSOFT and device
id is PCI_DEVICE_ID_VIRTUAL_RENDER. dxg_pci_probe_device handles
arrival of such devices. The PCI config space of the virtual compute
device has luid of the corresponding virtual compute device VM
bus channel. This is how the compute device adapter objects are
linked to VMBus channels.
VMBus interface version is exchanged by reading/writing the PCI config
space of the virtual compute device.
The IO space is used to handle CPU accessible compute device
allocations. Hyper-V allocates IO space for the global VMBus channel.
Signed-off-by: Iouri Tarassov <iourit@linux.microsoft.com>
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