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 256
  12
  13 typedef struct SysBusDevice SysBusDevice;
  14 typedef void (*mmio_mapfunc)(SysBusDevice *dev, target_phys_addr_t addr);
  15
  16 struct SysBusDevice {
  17     DeviceState qdev;
  18     int num_irq;
  19     qemu_irq irqs[QDEV_MAX_IRQ];
  20     qemu_irq *irqp[QDEV_MAX_IRQ];
  21     int num_mmio;
  22     struct {
  23         target_phys_addr_t addr;
  24         mmio_mapfunc cb;
  25         mmio_mapfunc unmap;
  26         MemoryRegion *memory;
  27     } mmio[QDEV_MAX_MMIO];
  28     int num_pio;
  29     pio_addr_t pio[QDEV_MAX_PIO];
  30 };
  31
  32 typedef int (*sysbus_initfn)(SysBusDevice *dev);
  33
  34 /* Macros to compensate for lack of type inheritance in C.  */
  35 #define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
  36 #define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  37
  38 typedef struct {
  39     DeviceInfo qdev;
  40     sysbus_initfn init;
  41 } SysBusDeviceInfo;
  42
  43 void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
  44 void sysbus_register_withprop(SysBusDeviceInfo *info);
  45 void *sysbus_new(void);
  46 void sysbus_init_mmio_cb2(SysBusDevice *dev,
  47                           mmio_mapfunc cb, mmio_mapfunc unmap);
  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
  66 /* Legacy helper function for creating devices.  */
  67 DeviceState *sysbus_create_varargs(const char *name,
  68                                  target_phys_addr_t addr, ...);
  69 DeviceState *sysbus_try_create_varargs(const char *name,
  70                                        target_phys_addr_t addr, ...);
  71 static inline DeviceState *sysbus_create_simple(const char *name,
  72                                               target_phys_addr_t addr,
  73                                               qemu_irq irq)
  74 {
  75     return sysbus_create_varargs(name, addr, irq, NULL);
  76 }
  77
  78 static inline DeviceState *sysbus_try_create_simple(const char *name,
  79                                                     target_phys_addr_t addr,
  80                                                     qemu_irq irq)
  81 {
  82     return sysbus_try_create_varargs(name, addr, irq, NULL);
  83 }
  84
  85 #endif /* !HW_SYSBUS_H */