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