1 files changed, 121 insertions, 0 deletions
diff --git a/src/include/hw/sysbus.h b/src/include/hw/sysbus.h
new file mode 100644
index 0000000..cc1dba4
--- /dev/null
+++ b/src/include/hw/sysbus.h
@@ -0,0 +1,121 @@
+#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 TYPE_SYSTEM_BUS "System"
+#define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_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)
+
+/**
+ * SysBusDeviceClass:
+ * @init: Callback function invoked when the #DeviceState.realized property
+ * is changed to %true. Deprecated, new types inheriting directly from
+ * TYPE_SYS_BUS_DEVICE should use #DeviceClass.realize instead, new leaf
+ * types should consult their respective parent type.
+ *
+ * SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
+ * classes overriding it are not required to invoke its implementation.
+ */
+
+#define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
+
+typedef struct SysBusDeviceClass {
+    /*< private >*/
+    DeviceClass parent_class;
+    /*< public >*/
+
+    int (*init)(SysBusDevice *dev);
+
+    /*
+     * Let the sysbus device format its own non-PIO, non-MMIO unit address.
+     *
+     * Sometimes a class of SysBusDevices has neither MMIO nor PIO resources,
+     * yet instances of it would like to distinguish themselves, in
+     * OpenFirmware device paths, from other instances of the same class on the
+     * sysbus. For that end we expose this callback.
+     *
+     * The implementation is not supposed to change *@dev, or incur other
+     * observable change.
+     *
+     * The function returns a dynamically allocated string. On error, NULL
+     * should be returned; the unit address portion of the OFW node will be
+     * omitted then. (This is not considered a fatal error.)
+     */
+    char *(*explicit_ofw_unit_address)(const SysBusDevice *dev);
+    void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq);
+} SysBusDeviceClass;
+
+struct SysBusDevice {
+    /*< private >*/
+    DeviceState parent_obj;
+    /*< public >*/
+
+    int num_mmio;
+    struct {
+        hwaddr addr;
+        MemoryRegion *memory;
+    } mmio[QDEV_MAX_MMIO];
+    int num_pio;
+    pio_addr_t pio[QDEV_MAX_PIO];
+};
+
+typedef int FindSysbusDeviceFunc(SysBusDevice *sbdev, void *opaque);
+
+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);
+
+
+bool sysbus_has_irq(SysBusDevice *dev, int n);
+bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n);
+void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
+bool sysbus_is_irq_connected(SysBusDevice *dev, int n);
+qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n);
+void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
+void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
+                             int priority);
+void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
+                   MemoryRegion *mem);
+MemoryRegion *sysbus_address_space(SysBusDevice *dev);
+
+/* Call func for every dynamically created sysbus device in the system */
+void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque);
+
+/* 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 */