diff options
Diffstat (limited to 'include/hw/sysbus.h')
-rw-r--r-- | include/hw/sysbus.h | 85 |
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 */ |