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, 60 insertions, 0 deletions

diff --git a/include/hw/isa/superio.h b/include/hw/isa/superio.h
new file mode 100644
index 000000000..b9f5c1915
--- /dev/null
+++ b/include/hw/isa/superio.h
@@ -0,0 +1,60 @@
+/*
+ * Generic ISA Super I/O
+ *
+ * Copyright (c) 2018 Philippe Mathieu-Daudé
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef HW_ISA_SUPERIO_H
+#define HW_ISA_SUPERIO_H
+
+#include "sysemu/sysemu.h"
+#include "hw/isa/isa.h"
+#include "qom/object.h"
+
+#define TYPE_ISA_SUPERIO "isa-superio"
+typedef struct ISASuperIOClass ISASuperIOClass;
+typedef struct ISASuperIODevice ISASuperIODevice;
+DECLARE_OBJ_CHECKERS(ISASuperIODevice, ISASuperIOClass,
+                     ISA_SUPERIO, TYPE_ISA_SUPERIO)
+
+#define SUPERIO_MAX_SERIAL_PORTS 4
+
+struct ISASuperIODevice {
+    /*< private >*/
+    ISADevice parent_obj;
+    /*< public >*/
+
+    ISADevice *parallel[MAX_PARALLEL_PORTS];
+    ISADevice *serial[SUPERIO_MAX_SERIAL_PORTS];
+    ISADevice *floppy;
+    ISADevice *kbc;
+    ISADevice *ide;
+};
+
+typedef struct ISASuperIOFuncs {
+    size_t count;
+    bool (*is_enabled)(ISASuperIODevice *sio, uint8_t index);
+    uint16_t (*get_iobase)(ISASuperIODevice *sio, uint8_t index);
+    unsigned int (*get_irq)(ISASuperIODevice *sio, uint8_t index);
+    unsigned int (*get_dma)(ISASuperIODevice *sio, uint8_t index);
+} ISASuperIOFuncs;
+
+struct ISASuperIOClass {
+    /*< private >*/
+    ISADeviceClass parent_class;
+    /*< public >*/
+    DeviceRealize parent_realize;
+
+    ISASuperIOFuncs parallel;
+    ISASuperIOFuncs serial;
+    ISASuperIOFuncs floppy;
+    ISASuperIOFuncs ide;
+};
+
+#define TYPE_FDC37M81X_SUPERIO  "fdc37m81x-superio"
+#define TYPE_SMC37C669_SUPERIO  "smc37c669-superio"
+
+#endif /* HW_ISA_SUPERIO_H */