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, 68 insertions, 0 deletions

diff --git a/include/hw/timer/allwinner-a10-pit.h b/include/hw/timer/allwinner-a10-pit.h
new file mode 100644
index 000000000..8435758ad
--- /dev/null
+++ b/include/hw/timer/allwinner-a10-pit.h
@@ -0,0 +1,68 @@
+#ifndef ALLWINNER_A10_PIT_H
+#define ALLWINNER_A10_PIT_H
+
+#include "hw/ptimer.h"
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define TYPE_AW_A10_PIT "allwinner-A10-timer"
+OBJECT_DECLARE_SIMPLE_TYPE(AwA10PITState, AW_A10_PIT)
+
+#define AW_A10_PIT_TIMER_NR    6
+#define AW_A10_PIT_TIMER_IRQ   0x1
+#define AW_A10_PIT_WDOG_IRQ    0x100
+
+#define AW_A10_PIT_TIMER_IRQ_EN    0
+#define AW_A10_PIT_TIMER_IRQ_ST    0x4
+
+#define AW_A10_PIT_TIMER_CONTROL   0x0
+#define AW_A10_PIT_TIMER_EN        0x1
+#define AW_A10_PIT_TIMER_RELOAD    0x2
+#define AW_A10_PIT_TIMER_MODE      0x80
+
+#define AW_A10_PIT_TIMER_INTERVAL  0x4
+#define AW_A10_PIT_TIMER_COUNT     0x8
+#define AW_A10_PIT_WDOG_CONTROL    0x90
+#define AW_A10_PIT_WDOG_MODE       0x94
+
+#define AW_A10_PIT_COUNT_CTL       0xa0
+#define AW_A10_PIT_COUNT_RL_EN     0x2
+#define AW_A10_PIT_COUNT_CLR_EN    0x1
+#define AW_A10_PIT_COUNT_LO        0xa4
+#define AW_A10_PIT_COUNT_HI        0xa8
+
+#define AW_A10_PIT_TIMER_BASE      0x10
+#define AW_A10_PIT_TIMER_BASE_END  \
+    (AW_A10_PIT_TIMER_BASE * 6 + AW_A10_PIT_TIMER_COUNT)
+
+#define AW_A10_PIT_DEFAULT_CLOCK   0x4
+
+
+typedef struct AwA10TimerContext {
+    AwA10PITState *container;
+    int index;
+} AwA10TimerContext;
+
+struct AwA10PITState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+    qemu_irq irq[AW_A10_PIT_TIMER_NR];
+    ptimer_state * timer[AW_A10_PIT_TIMER_NR];
+    AwA10TimerContext timer_context[AW_A10_PIT_TIMER_NR];
+    MemoryRegion iomem;
+    uint32_t clk_freq[4];
+
+    uint32_t irq_enable;
+    uint32_t irq_status;
+    uint32_t control[AW_A10_PIT_TIMER_NR];
+    uint32_t interval[AW_A10_PIT_TIMER_NR];
+    uint32_t count[AW_A10_PIT_TIMER_NR];
+    uint32_t watch_dog_mode;
+    uint32_t watch_dog_control;
+    uint32_t count_lo;
+    uint32_t count_hi;
+    uint32_t count_ctl;
+};
+
+#endif