1 files changed, 85 insertions, 0 deletions
diff --git a/include/hw/sysbus.h b/include/hw/sysbus.h
new file mode 100644
index 0000000000..7c2e3163fb
--- /dev/null
+++ b/include/hw/sysbus.h
@@ -0,0 +1,85 @@
+#ifndef HW_SYSBUS_H
+#define HW_SYSBUS_H 1
+
+/* Devices attached directly to the main system bus.  */
+
+#include "hw/qdev.h"
+#include "exec/memory.h"
+
+#define QDEV_MAX_MMIO 32
+#define QDEV_MAX_PIO 32
+#define QDEV_MAX_IRQ 512
+
+#define TYPE_SYSTEM_BUS "System"
+#define SYSTEM_BUS(obj) OBJECT_CHECK(IDEBus, (obj), TYPE_IDE_BUS)
+
+typedef struct SysBusDevice SysBusDevice;
+
+#define TYPE_SYS_BUS_DEVICE "sys-bus-device"
+#define SYS_BUS_DEVICE(obj) \
+     OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
+#define SYS_BUS_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
+#define SYS_BUS_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
+
+typedef struct SysBusDeviceClass {
+    DeviceClass parent_class;
+
+    int (*init)(SysBusDevice *dev);
+} SysBusDeviceClass;
+
+struct SysBusDevice {
+    DeviceState qdev;
+    int num_irq;
+    qemu_irq irqs[QDEV_MAX_IRQ];
+    qemu_irq *irqp[QDEV_MAX_IRQ];
+    int num_mmio;
+    struct {
+        hwaddr addr;
+        MemoryRegion *memory;
+    } mmio[QDEV_MAX_MMIO];
+    int num_pio;
+    pio_addr_t pio[QDEV_MAX_PIO];
+};
+
+/* Macros to compensate for lack of type inheritance in C.  */
+#define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
+
+void *sysbus_new(void);
+void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
+MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
+void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
+void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
+void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
+
+
+void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
+void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
+void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
+                             unsigned priority);
+void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
+                   MemoryRegion *mem);
+void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem);
+MemoryRegion *sysbus_address_space(SysBusDevice *dev);
+
+/* Legacy helper function for creating devices.  */
+DeviceState *sysbus_create_varargs(const char *name,
+                                 hwaddr addr, ...);
+DeviceState *sysbus_try_create_varargs(const char *name,
+                                       hwaddr addr, ...);
+static inline DeviceState *sysbus_create_simple(const char *name,
+                                              hwaddr addr,
+                                              qemu_irq irq)
+{
+    return sysbus_create_varargs(name, addr, irq, NULL);
+}
+
+static inline DeviceState *sysbus_try_create_simple(const char *name,
+                                                    hwaddr addr,
+                                                    qemu_irq irq)
+{
+    return sysbus_try_create_varargs(name, addr, irq, NULL);
+}
+
+#endif /* !HW_SYSBUS_H */