hw/qdev.h

   1 #ifndef QDEV_H
   2 #define QDEV_H
   3
   4 #include "hw.h"
   5
   6 typedef struct DeviceType DeviceType;
   7
   8 typedef struct DeviceProperty DeviceProperty;
   9
  10 typedef struct ChildBusList ChildBusList;
  11
  12 /* This structure should not be accessed directly.  We declare it here
  13    so that it can be embedded in individual device state structures.  */
  14 struct DeviceState
  15 {
  16     const char *name;
  17     DeviceType *type;
  18     void *bus;
  19     DeviceProperty *props;
  20     int num_irq_sink;
  21     qemu_irq *irq_sink;
  22     int num_gpio_out;
  23     qemu_irq *gpio_out;
  24     int num_gpio_in;
  25     qemu_irq *gpio_in;
  26     ChildBusList *child_bus;
  27 };
  28
  29 /*** Board API.  This should go away once we have a machine config file.  ***/
  30
  31 DeviceState *qdev_create(void *bus, const char *name);
  32 void qdev_init(DeviceState *dev);
  33
  34 /* Set properties between creation and init.  */
  35 void qdev_set_prop_int(DeviceState *dev, const char *name, int value);
  36 void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value);
  37
  38 qemu_irq qdev_get_irq_sink(DeviceState *dev, int n);
  39 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
  40 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
  41
  42 void *qdev_get_child_bus(DeviceState *dev, const char *name);
  43
  44 /*** Device API.  ***/
  45
  46 typedef void (*qdev_initfn)(DeviceState *dev, void *opaque);
  47 typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
  48               int unit);
  49
  50 DeviceType *qdev_register(const char *name, int size, qdev_initfn init,
  51                           void *opaque);
  52
  53 /* Register device properties.  */
  54 void qdev_init_irq_sink(DeviceState *dev, qemu_irq_handler handler, int nirq);
  55 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
  56 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
  57 void qdev_attach_child_bus(DeviceState *dev, const char *name, void *bus);
  58
  59 void scsi_bus_new(DeviceState *host, SCSIAttachFn attach);
  60
  61 CharDriverState *qdev_init_chardev(DeviceState *dev);
  62
  63 void *qdev_get_bus(DeviceState *dev);
  64 uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def);
  65 void *qdev_get_prop_ptr(DeviceState *dev, const char *name);
  66
  67 /* Convery from a base type to a parent type, with compile time checking.  */
  68 #ifdef __GNUC__
  69 #define DO_UPCAST(type, field, dev) ( __extension__ ( { \
  70     char __attribute__((unused)) offset_must_be_zero[ \
  71         -offsetof(type, field)]; \
  72     container_of(dev, type, field);}))
  73 #else
  74 #define DO_UPCAST(type, field, dev) container_of(dev, type, field)
  75 #endif
  76
  77 #endif