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, 58 insertions, 0 deletions

diff --git a/include/hw/timer/renesas_tmr.h b/include/hw/timer/renesas_tmr.h
new file mode 100644
index 000000000..caf7eec0d
--- /dev/null
+++ b/include/hw/timer/renesas_tmr.h
@@ -0,0 +1,58 @@
+/*
+ * Renesas 8bit timer Object
+ *
+ * Copyright (c) 2018 Yoshinori Sato
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef HW_TIMER_RENESAS_TMR_H
+#define HW_TIMER_RENESAS_TMR_H
+
+#include "qemu/timer.h"
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define TYPE_RENESAS_TMR "renesas-tmr"
+typedef struct RTMRState RTMRState;
+DECLARE_INSTANCE_CHECKER(RTMRState, RTMR,
+                         TYPE_RENESAS_TMR)
+
+enum timer_event {
+    cmia = 0,
+    cmib = 1,
+    ovi = 2,
+    none = 3,
+    TMR_NR_EVENTS = 4
+};
+
+enum {
+    TMR_CH = 2,
+    TMR_NR_IRQ = 3 * TMR_CH
+};
+
+struct RTMRState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+
+    uint64_t input_freq;
+    MemoryRegion memory;
+
+    int64_t tick;
+    uint8_t tcnt[TMR_CH];
+    uint8_t tcora[TMR_CH];
+    uint8_t tcorb[TMR_CH];
+    uint8_t tcr[TMR_CH];
+    uint8_t tccr[TMR_CH];
+    uint8_t tcor[TMR_CH];
+    uint8_t tcsr[TMR_CH];
+    int64_t div_round[TMR_CH];
+    uint8_t next[TMR_CH];
+    qemu_irq cmia[TMR_CH];
+    qemu_irq cmib[TMR_CH];
+    qemu_irq ovi[TMR_CH];
+    QEMUTimer timer[TMR_CH];
+};
+
+#endif