On Thu, Mar 14, 2013 at 04:48:47PM +0800, Hu Tao wrote:
> pvevent device is used to notify host(qemu) when guest panic
> happens.
>
> ref: http://lists.nongnu.org/archive/html/qemu-devel/2013-03/msg02293.html
>
> Signed-off-by: Hu Tao <hu...@cn.fujitsu.com>
> ---
> src/acpi-dsdt-isa.dsl | 30 ++++++++++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/src/acpi-dsdt-isa.dsl b/src/acpi-dsdt-isa.dsl
> index 23761db..d083245 100644
> --- a/src/acpi-dsdt-isa.dsl
> +++ b/src/acpi-dsdt-isa.dsl
> @@ -99,4 +99,34 @@ Scope(\_SB.PCI0.ISA) {
> IRQNoFlags() { 3 }
> })
> }
> +
> + Device(PEVT) {
> + Name(_HID, "MSFT0001")
We cannot use MSFT!
> + OperationRegion(PEOR, SystemIO, 0x0505, 0x01)
IO port should be received form QEMU by fw_cfg and patched here at run time.
> + Field(PEOR, ByteAcc, NoLock, Preserve) {
> + PEPT, 8,
> + }
> +
> + Method(_STA, 0, NotSerialized) {
> + Store(PEPT, Local0)
> + If (LEqual(Local0, Zero)) {
> + Return (0x00)
> + } Else {
> + Return (0x0F)
> + }
> + }
No probing. If QEMU does not provide IO port function should be patched
to return zero.
> +
> + Method(RDPT, 0, NotSerialized) {
> + Store(PEPT, Local0)
> + Return (Local0)
> + }
> +
> + Method(WRPT, 1, NotSerialized) {
> + Store(Arg0, PEPT)
> + }
> +
> + Name(_CRS, ResourceTemplate() {
> + IO(Decode16, 0x0505, 0x0505, 0x01, 0x01)
> + })
> + }
> }
> --
> 1.8.1.4
--
Gleb.
