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-rw-r--r--include/hw/sysbus.h85
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 */