LXR qemu/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
  13typedef struct SysBusDevice SysBusDevice;
  14typedef void (*mmio_mapfunc)(SysBusDevice *dev, target_phys_addr_t addr);
  15
  16struct 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
  34typedef 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
  40typedef struct {
  41    DeviceInfo qdev;
  42    sysbus_initfn init;
  43} SysBusDeviceInfo;
  44
  45void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
  46void sysbus_register_withprop(SysBusDeviceInfo *info);
  47void *sysbus_new(void);
  48void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size,
  49                      ram_addr_t iofunc);
  50void sysbus_init_mmio_cb2(SysBusDevice *dev,
  51                          mmio_mapfunc cb, mmio_mapfunc unmap);
  52void sysbus_init_mmio_region(SysBusDevice *dev, MemoryRegion *memory);
  53MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  54void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  55void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  56void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  57
  58
  59void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  60void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
  61void sysbus_add_memory(SysBusDevice *dev, target_phys_addr_t addr,
  62                       MemoryRegion *mem);
  63void sysbus_add_memory_overlap(SysBusDevice *dev, target_phys_addr_t addr,
  64                               MemoryRegion *mem, unsigned priority);
  65void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem);
  66void sysbus_add_io(SysBusDevice *dev, target_phys_addr_t addr,
  67                   MemoryRegion *mem);
  68void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem);
  69
  70/* Legacy helper function for creating devices.  */
  71DeviceState *sysbus_create_varargs(const char *name,
  72                                 target_phys_addr_t addr, ...);
  73DeviceState *sysbus_try_create_varargs(const char *name,
  74                                       target_phys_addr_t addr, ...);
  75static inline DeviceState *sysbus_create_simple(const char *name,
  76                                              target_phys_addr_t addr,
  77                                              qemu_irq irq)
  78{
  79    return sysbus_create_varargs(name, addr, irq, NULL);
  80}
  81
  82static inline DeviceState *sysbus_try_create_simple(const char *name,
  83                                                    target_phys_addr_t addr,
  84                                                    qemu_irq irq)
  85{
  86    return sysbus_try_create_varargs(name, addr, irq, NULL);
  87}
  88
  89#endif /* !HW_SYSBUS_H */
  90