hw/sysbus.h

   1 #ifndef HW_SYSBUS_H
   2 #define HW_SYSBUS_H 1
   3
   4 /* Devices attached directly to the main system bus.  */
   5
   6 #include "qdev.h"
   7 #include "memory.h"
   8
   9 #define QDEV_MAX_MMIO 32
  10 #define QDEV_MAX_PIO 32
  11 #define QDEV_MAX_IRQ 512
  12
  13 typedef struct SysBusDevice SysBusDevice;
  14
  15 #define TYPE_SYS_BUS_DEVICE "sys-bus-device"
  16 #define SYS_BUS_DEVICE(obj) \
  17      OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
  18 #define SYS_BUS_DEVICE_CLASS(klass) \
  19      OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
  20 #define SYS_BUS_DEVICE_GET_CLASS(obj) \
  21      OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
  22
  23 typedef struct SysBusDeviceClass {
  24     DeviceClass parent_class;
  25
  26     int (*init)(SysBusDevice *dev);
  27 } SysBusDeviceClass;
  28
  29 struct SysBusDevice {
  30     DeviceState qdev;
  31     int num_irq;
  32     qemu_irq irqs[QDEV_MAX_IRQ];
  33     qemu_irq *irqp[QDEV_MAX_IRQ];
  34     int num_mmio;
  35     struct {
  36         target_phys_addr_t addr;
  37         MemoryRegion *memory;
  38     } mmio[QDEV_MAX_MMIO];
  39     int num_pio;
  40     pio_addr_t pio[QDEV_MAX_PIO];
  41 };
  42
  43 /* Macros to compensate for lack of type inheritance in C.  */
  44 #define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
  45 #define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  46
  47 void *sysbus_new(void);
  48 void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
  49 MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  50 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  51 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  52 void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  53
  54
  55 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  56 void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
  57 void sysbus_add_memory(SysBusDevice *dev, target_phys_addr_t addr,
  58                        MemoryRegion *mem);
  59 void sysbus_add_memory_overlap(SysBusDevice *dev, target_phys_addr_t addr,
  60                                MemoryRegion *mem, unsigned priority);
  61 void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem);
  62 void sysbus_add_io(SysBusDevice *dev, target_phys_addr_t addr,
  63                    MemoryRegion *mem);
  64 void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem);
  65 MemoryRegion *sysbus_address_space(SysBusDevice *dev);
  66
  67 /* Legacy helper function for creating devices.  */
  68 DeviceState *sysbus_create_varargs(const char *name,
  69                                  target_phys_addr_t addr, ...);
  70 DeviceState *sysbus_try_create_varargs(const char *name,
  71                                        target_phys_addr_t addr, ...);
  72 static inline DeviceState *sysbus_create_simple(const char *name,
  73                                               target_phys_addr_t addr,
  74                                               qemu_irq irq)
  75 {
  76     return sysbus_create_varargs(name, addr, irq, NULL);
  77 }
  78
  79 static inline DeviceState *sysbus_try_create_simple(const char *name,
  80                                                     target_phys_addr_t addr,
  81                                                     qemu_irq irq)
  82 {
  83     return sysbus_try_create_varargs(name, addr, irq, NULL);
  84 }
  85
  86 #endif /* !HW_SYSBUS_H */