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, 51 insertions, 0 deletions

diff --git a/include/hw/timer/stellaris-gptm.h b/include/hw/timer/stellaris-gptm.h
new file mode 100644
index 000000000..fde1fc6f0
--- /dev/null
+++ b/include/hw/timer/stellaris-gptm.h
@@ -0,0 +1,51 @@
+/*
+ * Luminary Micro Stellaris General Purpose Timer Module
+ *
+ * Copyright (c) 2006 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#ifndef HW_TIMER_STELLARIS_GPTM_H
+#define HW_TIMER_STELLARIS_GPTM_H
+
+#include "qom/object.h"
+#include "hw/sysbus.h"
+#include "hw/irq.h"
+#include "hw/clock.h"
+
+#define TYPE_STELLARIS_GPTM "stellaris-gptm"
+OBJECT_DECLARE_SIMPLE_TYPE(gptm_state, STELLARIS_GPTM)
+
+/*
+ * QEMU interface:
+ *  + sysbus MMIO region 0: register bank
+ *  + sysbus IRQ 0: timer interrupt
+ *  + unnamed GPIO output 0: trigger output for the ADC
+ *  + Clock input "clk": the 32-bit countdown timer runs at this speed
+ */
+struct gptm_state {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+    uint32_t config;
+    uint32_t mode[2];
+    uint32_t control;
+    uint32_t state;
+    uint32_t mask;
+    uint32_t load[2];
+    uint32_t match[2];
+    uint32_t prescale[2];
+    uint32_t match_prescale[2];
+    uint32_t rtc;
+    int64_t tick[2];
+    struct gptm_state *opaque[2];
+    QEMUTimer *timer[2];
+    /* The timers have an alternate output used to trigger the ADC.  */
+    qemu_irq trigger;
+    qemu_irq irq;
+    Clock *clk;
+};
+
+#endif