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, 25 insertions, 0 deletions

diff --git a/include/hw/isa/apm.h b/include/hw/isa/apm.h
new file mode 100644
index 000000000..b6e070c00
--- /dev/null
+++ b/include/hw/isa/apm.h
@@ -0,0 +1,25 @@
+#ifndef APM_H
+#define APM_H
+
+#include "exec/memory.h"
+
+#define APM_CNT_IOPORT  0xb2
+#define ACPI_PORT_SMI_CMD APM_CNT_IOPORT
+
+typedef void (*apm_ctrl_changed_t)(uint32_t val, void *arg);
+
+typedef struct APMState {
+    uint8_t apmc;
+    uint8_t apms;
+
+    apm_ctrl_changed_t callback;
+    void *arg;
+    MemoryRegion io;
+} APMState;
+
+void apm_init(PCIDevice *dev, APMState *s, apm_ctrl_changed_t callback,
+              void *arg);
+
+extern const VMStateDescription vmstate_apm;
+
+#endif /* APM_H */