Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 59 insertions, 0 deletions

diff --git a/include/hw/acpi/acpi_dev_interface.h b/include/hw/acpi/acpi_dev_interface.h
new file mode 100644
index 000000000..ea6056ab9
--- /dev/null
+++ b/include/hw/acpi/acpi_dev_interface.h
@@ -0,0 +1,59 @@
+#ifndef ACPI_DEV_INTERFACE_H
+#define ACPI_DEV_INTERFACE_H
+
+#include "qapi/qapi-types-acpi.h"
+#include "qom/object.h"
+#include "hw/boards.h"
+#include "hw/qdev-core.h"
+
+/* These values are part of guest ABI, and can not be changed */
+typedef enum {
+    ACPI_PCI_HOTPLUG_STATUS = 2,
+    ACPI_CPU_HOTPLUG_STATUS = 4,
+    ACPI_MEMORY_HOTPLUG_STATUS = 8,
+    ACPI_NVDIMM_HOTPLUG_STATUS = 16,
+    ACPI_VMGENID_CHANGE_STATUS = 32,
+    ACPI_POWER_DOWN_STATUS = 64,
+} AcpiEventStatusBits;
+
+#define TYPE_ACPI_DEVICE_IF "acpi-device-interface"
+
+typedef struct AcpiDeviceIfClass AcpiDeviceIfClass;
+DECLARE_CLASS_CHECKERS(AcpiDeviceIfClass, ACPI_DEVICE_IF,
+                       TYPE_ACPI_DEVICE_IF)
+#define ACPI_DEVICE_IF(obj) \
+     INTERFACE_CHECK(AcpiDeviceIf, (obj), \
+                     TYPE_ACPI_DEVICE_IF)
+
+typedef struct AcpiDeviceIf AcpiDeviceIf;
+
+void acpi_send_event(DeviceState *dev, AcpiEventStatusBits event);
+
+/**
+ * AcpiDeviceIfClass:
+ *
+ * ospm_status: returns status of ACPI device objects, reported
+ *              via _OST method if device supports it.
+ * send_event: inject a specified event into guest
+ * madt_cpu: fills @entry with Interrupt Controller Structure
+ *           for CPU indexed by @uid in @apic_ids array,
+ *           returned structure types are:
+ *           0 - Local APIC, 9 - Local x2APIC, 0xB - GICC
+ *
+ * Interface is designed for providing unified interface
+ * to generic ACPI functionality that could be used without
+ * knowledge about internals of actual device that implements
+ * ACPI interface.
+ */
+struct AcpiDeviceIfClass {
+    /* <private> */
+    InterfaceClass parent_class;
+
+    /* <public> */
+    void (*ospm_status)(AcpiDeviceIf *adev, ACPIOSTInfoList ***list);
+    void (*send_event)(AcpiDeviceIf *adev, AcpiEventStatusBits ev);
+    void (*madt_cpu)(AcpiDeviceIf *adev, int uid,
+                     const CPUArchIdList *apic_ids, GArray *entry,
+                     bool force_enabled);
+};
+#endif