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, 66 insertions, 0 deletions

diff --git a/include/hw/misc/allwinner-h3-sysctrl.h b/include/hw/misc/allwinner-h3-sysctrl.h
new file mode 100644
index 000000000..ec1c22053
--- /dev/null
+++ b/include/hw/misc/allwinner-h3-sysctrl.h
@@ -0,0 +1,66 @@
+/*
+ * Allwinner H3 System Control emulation
+ *
+ * Copyright (C) 2019 Niek Linnenbank <nieklinnenbank@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HW_MISC_ALLWINNER_H3_SYSCTRL_H
+#define HW_MISC_ALLWINNER_H3_SYSCTRL_H
+
+#include "qom/object.h"
+#include "hw/sysbus.h"
+
+/**
+ * @name Constants
+ * @{
+ */
+
+/** Highest register address used by System Control device */
+#define AW_H3_SYSCTRL_REGS_MAXADDR   (0x30)
+
+/** Total number of known registers */
+#define AW_H3_SYSCTRL_REGS_NUM       ((AW_H3_SYSCTRL_REGS_MAXADDR / \
+                                      sizeof(uint32_t)) + 1)
+
+/** @} */
+
+/**
+ * @name Object model
+ * @{
+ */
+
+#define TYPE_AW_H3_SYSCTRL    "allwinner-h3-sysctrl"
+OBJECT_DECLARE_SIMPLE_TYPE(AwH3SysCtrlState, AW_H3_SYSCTRL)
+
+/** @} */
+
+/**
+ * Allwinner H3 System Control object instance state
+ */
+struct AwH3SysCtrlState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+
+    /** Maps I/O registers in physical memory */
+    MemoryRegion iomem;
+
+    /** Array of hardware registers */
+    uint32_t regs[AW_H3_SYSCTRL_REGS_NUM];
+
+};
+
+#endif /* HW_MISC_ALLWINNER_H3_SYSCTRL_H */