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         target_phys_addr_t size;
  25         mmio_mapfunc cb;
  26         mmio_mapfunc unmap;
  27         ram_addr_t iofunc;
  28         MemoryRegion *memory;
  29     } mmio[QDEV_MAX_MMIO];
  30     int num_pio;
  31     pio_addr_t pio[QDEV_MAX_PIO];
  32 };
  33
  34 typedef int (*sysbus_initfn)(SysBusDevice *dev);
  35
  36 /* Macros to compensate for lack of type inheritance in C.  */
  37 #define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
  38 #define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  39
  40 typedef struct {
  41     DeviceInfo qdev;
  42     sysbus_initfn init;
  43 } SysBusDeviceInfo;
  44
  45 void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
  46 void sysbus_register_withprop(SysBusDeviceInfo *info);
  47 void *sysbus_new(void);
  48 void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size,
  49                       ram_addr_t iofunc);
  50 void sysbus_init_mmio_cb2(SysBusDevice *dev,
  51                           mmio_mapfunc cb, mmio_mapfunc unmap);
  52 void sysbus_init_mmio_region(SysBusDevice *dev, MemoryRegion *memory);
  53 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  54 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  55 void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  56
  57
  58 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  59 void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
  60
  61 /* Legacy helper function for creating devices.  */
  62 DeviceState *sysbus_create_varargs(const char *name,
  63                                  target_phys_addr_t addr, ...);
  64 DeviceState *sysbus_try_create_varargs(const char *name,
  65                                        target_phys_addr_t addr, ...);
  66 static inline DeviceState *sysbus_create_simple(const char *name,
  67                                               target_phys_addr_t addr,
  68                                               qemu_irq irq)
  69 {
  70     return sysbus_create_varargs(name, addr, irq, NULL);
  71 }
  72
  73 static inline DeviceState *sysbus_try_create_simple(const char *name,
  74                                                     target_phys_addr_t addr,
  75                                                     qemu_irq irq)
  76 {
  77     return sysbus_try_create_varargs(name, addr, irq, NULL);
  78 }
  79
  80 #endif /* !HW_SYSBUS_H */