powerpc: introduce the ePAPR embedded hypervisor vmpic driver
authorAshish Kalra <ashish.kalra@freescale.com>
Thu, 19 May 2011 13:54:28 +0000 (08:54 -0500)
committerKumar Gala <galak@kernel.crashing.org>
Mon, 27 Jun 2011 13:30:26 +0000 (08:30 -0500)
commit3a93261f70c7b92f84fb211b66f1d4e66c0b3dce
tree83c9ce69a93bc16621e957fcab4b54d60a1d5678
parentbd497fc9782769d5bce58fbf468eabfce9e98ce0
powerpc: introduce the ePAPR embedded hypervisor vmpic driver

The Freescale ePAPR reference hypervisor provides interrupt controller
services via a hypercall interface, instead of emulating the MPIC
controller.  This is called the VMPIC.

The ePAPR "virtual interrupt controller" provides interrupt controller
services for external interrupts.  External interrupts received by a
partition can come from two sources:

  - Hardware interrupts - hardware interrupts come from external
    interrupt lines or on-chip I/O devices.
  - Virtual interrupts - virtual interrupts are generated by the hypervisor
    as part of some hypervisor service or hypervisor-created virtual device.

Both types of interrupts are processed using the same programming model and
same set of hypercalls.

Signed-off-by: Ashish Kalra <ashish.kalra@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
arch/powerpc/include/asm/ehv_pic.h [new file with mode: 0644]
arch/powerpc/platforms/Kconfig
arch/powerpc/sysdev/Makefile
arch/powerpc/sysdev/ehv_pic.c [new file with mode: 0644]