hw/qdev.h

   1 #ifndef QDEV_H
   2 #define QDEV_H
   3
   4 #include "hw.h"
   5 #include "sys-queue.h"
   6
   7 typedef struct Property Property;
   8
   9 typedef struct PropertyInfo PropertyInfo;
  10
  11 typedef struct CompatProperty CompatProperty;
  12
  13 typedef struct DeviceInfo DeviceInfo;
  14
  15 typedef struct BusState BusState;
  16
  17 typedef struct BusInfo BusInfo;
  18
  19 /* This structure should not be accessed directly.  We declare it here
  20    so that it can be embedded in individual device state structures.  */
  21 struct DeviceState {
  22     char *id;
  23     DeviceInfo *info;
  24     BusState *parent_bus;
  25     int num_gpio_out;
  26     qemu_irq *gpio_out;
  27     int num_gpio_in;
  28     qemu_irq *gpio_in;
  29     LIST_HEAD(, BusState) child_bus;
  30     NICInfo *nd;
  31     LIST_ENTRY(DeviceState) sibling;
  32 };
  33
  34 typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
  35 struct BusInfo {
  36     const char *name;
  37     size_t size;
  38     bus_dev_printfn print_dev;
  39     Property *props;
  40 };
  41
  42 struct BusState {
  43     DeviceState *parent;
  44     BusInfo *info;
  45     const char *name;
  46     LIST_HEAD(, DeviceState) children;
  47     LIST_ENTRY(BusState) sibling;
  48 };
  49
  50 struct Property {
  51     const char   *name;
  52     PropertyInfo *info;
  53     int          offset;
  54     void         *defval;
  55 };
  56
  57 enum PropertyType {
  58     PROP_TYPE_UNSPEC = 0,
  59     PROP_TYPE_UINT16,
  60     PROP_TYPE_UINT32,
  61     PROP_TYPE_TADDR,
  62     PROP_TYPE_MACADDR,
  63     PROP_TYPE_PTR,
  64 };
  65
  66 struct PropertyInfo {
  67     const char *name;
  68     size_t size;
  69     enum PropertyType type;
  70     int (*parse)(DeviceState *dev, Property *prop, const char *str);
  71     int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
  72 };
  73
  74 struct CompatProperty {
  75     const char *driver;
  76     const char *property;
  77     const char *value;
  78 };
  79
  80 /*** Board API.  This should go away once we have a machine config file.  ***/
  81
  82 DeviceState *qdev_create(BusState *bus, const char *name);
  83 void qdev_init(DeviceState *dev);
  84 void qdev_free(DeviceState *dev);
  85
  86 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
  87 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
  88
  89 BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
  90
  91 /*** Device API.  ***/
  92
  93 typedef void (*qdev_initfn)(DeviceState *dev, DeviceInfo *info);
  94 typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
  95               int unit);
  96
  97 struct DeviceInfo {
  98     const char *name;
  99     const char *alias;
 100     const char *desc;
 101     size_t size;
 102     Property *props;
 103     int no_user;
 104
 105     /* Private to qdev / bus.  */
 106     qdev_initfn init;
 107     BusInfo *bus_info;
 108     struct DeviceInfo *next;
 109 };
 110
 111 void qdev_register(DeviceInfo *info);
 112
 113 /* Register device properties.  */
 114 /* GPIO inputs also double as IRQ sinks.  */
 115 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
 116 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
 117
 118 void scsi_bus_new(DeviceState *host, SCSIAttachFn attach);
 119
 120 CharDriverState *qdev_init_chardev(DeviceState *dev);
 121
 122 BusState *qdev_get_parent_bus(DeviceState *dev);
 123
 124 /* Convery from a base type to a parent type, with compile time checking.  */
 125 #ifdef __GNUC__
 126 #define DO_UPCAST(type, field, dev) ( __extension__ ( { \
 127     char __attribute__((unused)) offset_must_be_zero[ \
 128         -offsetof(type, field)]; \
 129     container_of(dev, type, field);}))
 130 #else
 131 #define DO_UPCAST(type, field, dev) container_of(dev, type, field)
 132 #endif
 133
 134 /*** BUS API. ***/
 135
 136 BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
 137
 138 #define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
 139
 140 /*** monitor commands ***/
 141
 142 void do_info_qtree(Monitor *mon);
 143
 144 /*** qdev-properties.c ***/
 145
 146 extern PropertyInfo qdev_prop_uint16;
 147 extern PropertyInfo qdev_prop_uint32;
 148 extern PropertyInfo qdev_prop_hex32;
 149 extern PropertyInfo qdev_prop_ptr;
 150 extern PropertyInfo qdev_prop_macaddr;
 151
 152 /* Set properties between creation and init.  */
 153 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
 154 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
 155 void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type);
 156 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
 157 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 158 /* FIXME: Remove opaque pointer properties.  */
 159 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
 160 void qdev_prop_set_defaults(DeviceState *dev, Property *props);
 161
 162 void qdev_prop_register_compat(CompatProperty *props);
 163 void qdev_prop_set_compat(DeviceState *dev);
 164
 165 /* This is a nasty hack to allow passing a NULL bus to qdev_create.  */
 166 extern struct BusInfo system_bus_info;
 167
 168 #endif