acpi: introduce TYPE_ACPI_DEVICE_IF interface

... it will be used to abstract generic ACPI bits from
device that implements ACPI interface.

ACPIOSTInfo type is used for passing-through raw _OST
event/status codes reported by guest OS to a management
layer. It lets management tools interpret values
as specified by ACPI spec if it is interested in it.

QEMU doesn't encode these values as enum, since it
doesn't need to handle them and it allows interface
to scale well without any changes in QEMU while guest
OS and management evolves in time.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/qapi-schema.json b/qapi-schema.json
index d51a208c05..ff30ace82b 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3245,3 +3245,34 @@
 # Since: 2.1
 ##
 { 'command': 'query-memory-devices', 'returns': ['MemoryDeviceInfo'] }
+
+## @ACPISlotType
+#
+# @DIMM: memory slot
+#
+{ 'enum': 'ACPISlotType', 'data': [ 'DIMM' ] }
+
+## @ACPIOSTInfo
+#
+# OSPM Status Indication for a device
+# For description of possible values of @source and @status fields
+# see "_OST (OSPM Status Indication)" chapter of ACPI5.0 spec.
+#
+# @device: #optional device ID associated with slot
+#
+# @slot: slot ID, unique per slot of a given @slot-type
+#
+# @slot-type: type of the slot
+#
+# @source: an integer containing the source event
+#
+# @status: an integer containing the status code
+#
+# Since: 2.1
+##
+{ 'type': 'ACPIOSTInfo',
+  'data'  : { '*device': 'str',
+              'slot': 'str',
+              'slot-type': 'ACPISlotType',
+              'source': 'int',
+              'status': 'int' } }