hw/qdev.h

   1 #ifndef QDEV_H
   2 #define QDEV_H
   3
   4 #include "hw.h"
   5 #include "sysemu.h"
   6 #include "qemu-queue.h"
   7 #include "qemu-char.h"
   8 #include "qemu-option.h"
   9
  10 typedef struct Property Property;
  11
  12 typedef struct PropertyInfo PropertyInfo;
  13
  14 typedef struct CompatProperty CompatProperty;
  15
  16 typedef struct DeviceInfo DeviceInfo;
  17
  18 typedef struct BusState BusState;
  19
  20 typedef struct BusInfo BusInfo;
  21
  22 /* This structure should not be accessed directly.  We declare it here
  23    so that it can be embedded in individual device state structures.  */
  24 struct DeviceState {
  25     const char *id;
  26     DeviceInfo *info;
  27     BusState *parent_bus;
  28     int num_gpio_out;
  29     qemu_irq *gpio_out;
  30     int num_gpio_in;
  31     qemu_irq *gpio_in;
  32     QLIST_HEAD(, BusState) child_bus;
  33     int num_child_bus;
  34     NICInfo *nd;
  35     QLIST_ENTRY(DeviceState) sibling;
  36 };
  37
  38 typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
  39 struct BusInfo {
  40     const char *name;
  41     size_t size;
  42     bus_dev_printfn print_dev;
  43     Property *props;
  44 };
  45
  46 struct BusState {
  47     DeviceState *parent;
  48     BusInfo *info;
  49     const char *name;
  50     QLIST_HEAD(, DeviceState) children;
  51     QLIST_ENTRY(BusState) sibling;
  52 };
  53
  54 struct Property {
  55     const char   *name;
  56     PropertyInfo *info;
  57     int          offset;
  58     void         *defval;
  59 };
  60
  61 enum PropertyType {
  62     PROP_TYPE_UNSPEC = 0,
  63     PROP_TYPE_UINT16,
  64     PROP_TYPE_UINT32,
  65     PROP_TYPE_INT32,
  66     PROP_TYPE_UINT64,
  67     PROP_TYPE_TADDR,
  68     PROP_TYPE_MACADDR,
  69     PROP_TYPE_DRIVE,
  70     PROP_TYPE_CHR,
  71     PROP_TYPE_PTR,
  72 };
  73
  74 struct PropertyInfo {
  75     const char *name;
  76     size_t size;
  77     enum PropertyType type;
  78     int (*parse)(DeviceState *dev, Property *prop, const char *str);
  79     int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
  80 };
  81
  82 struct CompatProperty {
  83     const char *driver;
  84     const char *property;
  85     const char *value;
  86 };
  87
  88 /*** Board API.  This should go away once we have a machine config file.  ***/
  89
  90 DeviceState *qdev_create(BusState *bus, const char *name);
  91 DeviceState *qdev_device_add(QemuOpts *opts);
  92 int qdev_init(DeviceState *dev);
  93 void qdev_free(DeviceState *dev);
  94
  95 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
  96 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
  97
  98 BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
  99
 100 /*** Device API.  ***/
 101
 102 typedef int (*qdev_initfn)(DeviceState *dev, DeviceInfo *info);
 103
 104 struct DeviceInfo {
 105     const char *name;
 106     const char *alias;
 107     const char *desc;
 108     size_t size;
 109     Property *props;
 110     int no_user;
 111
 112     /* callbacks */
 113     QEMUResetHandler *reset;
 114
 115     /* device state */
 116     const VMStateDescription *vmsd;
 117
 118     /* Private to qdev / bus.  */
 119     qdev_initfn init;
 120     BusInfo *bus_info;
 121     struct DeviceInfo *next;
 122 };
 123
 124 void qdev_register(DeviceInfo *info);
 125
 126 /* Register device properties.  */
 127 /* GPIO inputs also double as IRQ sinks.  */
 128 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
 129 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
 130
 131 CharDriverState *qdev_init_chardev(DeviceState *dev);
 132
 133 BusState *qdev_get_parent_bus(DeviceState *dev);
 134
 135 /* Convery from a base type to a parent type, with compile time checking.  */
 136 #ifdef __GNUC__
 137 #define DO_UPCAST(type, field, dev) ( __extension__ ( { \
 138     char __attribute__((unused)) offset_must_be_zero[ \
 139         -offsetof(type, field)]; \
 140     container_of(dev, type, field);}))
 141 #else
 142 #define DO_UPCAST(type, field, dev) container_of(dev, type, field)
 143 #endif
 144
 145 /*** BUS API. ***/
 146
 147 BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
 148
 149 #define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
 150
 151 /*** monitor commands ***/
 152
 153 void do_info_qtree(Monitor *mon);
 154 void do_info_qdm(Monitor *mon);
 155
 156 /*** qdev-properties.c ***/
 157
 158 extern PropertyInfo qdev_prop_uint16;
 159 extern PropertyInfo qdev_prop_uint32;
 160 extern PropertyInfo qdev_prop_int32;
 161 extern PropertyInfo qdev_prop_uint64;
 162 extern PropertyInfo qdev_prop_hex32;
 163 extern PropertyInfo qdev_prop_hex64;
 164 extern PropertyInfo qdev_prop_chr;
 165 extern PropertyInfo qdev_prop_ptr;
 166 extern PropertyInfo qdev_prop_macaddr;
 167 extern PropertyInfo qdev_prop_drive;
 168 extern PropertyInfo qdev_prop_pci_devfn;
 169
 170 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
 171         .name      = (_name),                                    \
 172         .info      = &(_prop),                                   \
 173         .offset    = offsetof(_state, _field)                    \
 174             + type_check(_type,typeof_field(_state, _field)),    \
 175         }
 176 #define DEFINE_PROP_DEFAULT(_name, _state, _field, _defval, _prop, _type) { \
 177         .name      = (_name),                                           \
 178         .info      = &(_prop),                                          \
 179         .offset    = offsetof(_state, _field)                           \
 180             + type_check(_type,typeof_field(_state, _field)),           \
 181         .defval    = (_type[]) { _defval },                             \
 182         }
 183
 184 #define DEFINE_PROP_UINT16(_n, _s, _f, _d)                      \
 185     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
 186 #define DEFINE_PROP_UINT32(_n, _s, _f, _d)                      \
 187     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
 188 #define DEFINE_PROP_INT32(_n, _s, _f, _d)                      \
 189     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_int32, int32_t)
 190 #define DEFINE_PROP_UINT64(_n, _s, _f, _d)                      \
 191     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
 192 #define DEFINE_PROP_HEX32(_n, _s, _f, _d)                       \
 193     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex32, uint32_t)
 194 #define DEFINE_PROP_HEX64(_n, _s, _f, _d)                       \
 195     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex64, uint64_t)
 196 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
 197     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, uint32_t)
 198
 199 #define DEFINE_PROP_PTR(_n, _s, _f)             \
 200     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
 201 #define DEFINE_PROP_CHR(_n, _s, _f)             \
 202     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
 203 #define DEFINE_PROP_DRIVE(_n, _s, _f)             \
 204     DEFINE_PROP(_n, _s, _f, qdev_prop_drive, DriveInfo*)
 205 #define DEFINE_PROP_MACADDR(_n, _s, _f)         \
 206     DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, uint8_t[6])
 207
 208 #define DEFINE_PROP_END_OF_LIST()               \
 209     {}
 210
 211 /* Set properties between creation and init.  */
 212 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
 213 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
 214 void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type);
 215 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
 216 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 217 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
 218 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
 219 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
 220 void qdev_prop_set_drive(DeviceState *dev, const char *name, DriveInfo *value);
 221 /* FIXME: Remove opaque pointer properties.  */
 222 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
 223 void qdev_prop_set_defaults(DeviceState *dev, Property *props);
 224
 225 void qdev_prop_register_compat(CompatProperty *props);
 226 void qdev_prop_set_compat(DeviceState *dev);
 227
 228 /* This is a nasty hack to allow passing a NULL bus to qdev_create.  */
 229 extern struct BusInfo system_bus_info;
 230
 231 #endif