vservices: add the axon transport driver

The Axon transport driver adds a virtual services transport
driver for the OKL4 hypervisor Axons IPC interface, which
provides a secure high-performance scatter-gather style
inter-VM communication.

Change-Id: I2e1f573a43d3d89123687ab103f156aa83bdb893
Signed-off-by: Carl van Schaik <carl@cog.systems>
Git-commit: 88aed16076a3a860f3b2fa29a091989ff2a3b467
Git-repo: https://github.com/CogSystems/linux-msm/commits/msm-4.9-hyp
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>
[pheragu@codeaurora: Change of setup_timer API and the callback]
Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>

drivers/vservices/Makefile

@@ -11,4 +11,6 @@ obj-$(CONFIG_VSERVICES_SERVER) += core_server.o
 obj-$(CONFIG_VSERVICES_SKELETON_DRIVER) += vservices_skeleton_driver.o
 vservices_skeleton_driver-objs = skeleton_driver.o
 
+obj-$(CONFIG_VSERVICES_SUPPORT) += transport/
+
 obj-$(CONFIG_VSERVICES_SUPPORT) += protocol/

drivers/vservices/transport/Kconfig

@@ -4,4 +4,17 @@
 
 menu "Transport drivers"
 
+config VSERVICES_OKL4_AXON
+	tristate "OKL4 Microvisor Axon driver"
+	depends on VSERVICES_SUPPORT && OKL4_GUEST
+	default y
+	help
+	  This option adds support for Virtual Services sessions using an OKL4
+	  Microvisor Axon object as a transport.
+
+	  If this driver is to be used in a Cell that has multiple
+	  discontiguous regions in its physical memory pool, the
+	  CONFIG_DMA_CMA option must also be selected (or CONFIG_CMA
+	  in older kernels that do not have CONFIG_DMA_CMA).
+
 endmenu

drivers/vservices/transport/Makefile

@@ -1,2 +1,5 @@
 ccflags-y += -Werror
 ccflags-$(CONFIG_VSERVICES_DEBUG) += -DDEBUG
+
+obj-$(CONFIG_VSERVICES_OKL4_AXON)	+= vtransport_axon.o
+vtransport_axon-objs = axon.o