Commit d162219c authored Aug 18, 2020 by Tomas Winkler Committed by Greg Kroah-Hartman Aug 18, 2020

mei: virtio: virtualization frontend driver

This frontend driver implements MEI hw interface based on virtio
framework to let MEI driver work without changes under virtualization.
It requires a backend service in the ACRN device-model on the service
OS side to make it work. The backend service will emulate mei routing
and assign vtags for each mei vritio device.

The backend service is available in ACRN device-model at github.
For more information, please refer to https://projectacrn.org



The ACRN virtio sub device id for MEI is is 0x8602.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Wang Yu <yu1.wang@intel.com>
Signed-off-by: Liu Shuo <shuo.a.liu@intel.com>
Link: https://lore.kernel.org/r/20200818115147.2567012-14-tomas.winkler@intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 2257b74e

drivers/misc/mei/Kconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -46,4 +46,14 @@ config INTEL_MEI_TXE
		Supported SoCs:
		Intel Bay Trail

		config INTEL_MEI_VIRTIO
		tristate "Intel MEI interface emulation with virtio framework"
		select INTEL_MEI
		depends on X86 && PCI && VIRTIO_PCI
		help
		This module implements mei hw emulation over virtio transport.
		The module will be called mei_virtio.
		Enable this if your virtual machine supports virtual mei
		device over virtio.

		source "drivers/misc/mei/hdcp/Kconfig"

drivers/misc/mei/Makefile

+3 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,9 @@ obj-$(CONFIG_INTEL_MEI_TXE) += mei-txe.o
		mei-txe-objs := pci-txe.o
		mei-txe-objs += hw-txe.o

		obj-$(CONFIG_INTEL_MEI_VIRTIO) += mei-virtio.o
		mei-virtio-objs := hw-virtio.o

		mei-$(CONFIG_EVENT_TRACING) += mei-trace.o
		CFLAGS_mei-trace.o = -I$(src)

drivers/misc/mei/hw-virtio.c

0 → 100644

+874 −0

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