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, 55 insertions, 0 deletions

diff --git a/include/hw/gpio/npcm7xx_gpio.h b/include/hw/gpio/npcm7xx_gpio.h
new file mode 100644
index 000000000..b1d771bd7
--- /dev/null
+++ b/include/hw/gpio/npcm7xx_gpio.h
@@ -0,0 +1,55 @@
+/*
+ * Nuvoton NPCM7xx General Purpose Input / Output (GPIO)
+ *
+ * Copyright 2020 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+#ifndef NPCM7XX_GPIO_H
+#define NPCM7XX_GPIO_H
+
+#include "exec/memory.h"
+#include "hw/sysbus.h"
+
+/* Number of pins managed by each controller. */
+#define NPCM7XX_GPIO_NR_PINS (32)
+
+/*
+ * Number of registers in our device state structure. Don't change this without
+ * incrementing the version_id in the vmstate.
+ */
+#define NPCM7XX_GPIO_NR_REGS (0x80 / sizeof(uint32_t))
+
+typedef struct NPCM7xxGPIOState {
+    SysBusDevice parent;
+
+    /* Properties to be defined by the SoC */
+    uint32_t reset_pu;
+    uint32_t reset_pd;
+    uint32_t reset_osrc;
+    uint32_t reset_odsc;
+
+    MemoryRegion mmio;
+
+    qemu_irq irq;
+    qemu_irq output[NPCM7XX_GPIO_NR_PINS];
+
+    uint32_t pin_level;
+    uint32_t ext_level;
+    uint32_t ext_driven;
+
+    uint32_t regs[NPCM7XX_GPIO_NR_REGS];
+} NPCM7xxGPIOState;
+
+#define TYPE_NPCM7XX_GPIO "npcm7xx-gpio"
+#define NPCM7XX_GPIO(obj) \
+    OBJECT_CHECK(NPCM7xxGPIOState, (obj), TYPE_NPCM7XX_GPIO)
+
+#endif /* NPCM7XX_GPIO_H */