qdev.h
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#ifndef QDEV_H
#define QDEV_H
#include "hw.h"
#include "sys-queue.h"
typedef struct Property Property;
typedef struct PropertyInfo PropertyInfo;
typedef struct CompatProperty CompatProperty;
typedef struct DeviceInfo DeviceInfo;
typedef struct BusState BusState;
typedef struct BusInfo BusInfo;
/* This structure should not be accessed directly. We declare it here
so that it can be embedded in individual device state structures. */
struct DeviceState {
char *id;
DeviceInfo *info;
BusState *parent_bus;
int num_gpio_out;
qemu_irq *gpio_out;
int num_gpio_in;
qemu_irq *gpio_in;
LIST_HEAD(, BusState) child_bus;
int num_child_bus;
NICInfo *nd;
LIST_ENTRY(DeviceState) sibling;
};
typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
struct BusInfo {
const char *name;
size_t size;
bus_dev_printfn print_dev;
Property *props;
};
struct BusState {
DeviceState *parent;
BusInfo *info;
const char *name;
LIST_HEAD(, DeviceState) children;
LIST_ENTRY(BusState) sibling;
};
struct Property {
const char *name;
PropertyInfo *info;
int offset;
void *defval;
};
enum PropertyType {
PROP_TYPE_UNSPEC = 0,
PROP_TYPE_UINT16,
PROP_TYPE_UINT32,
PROP_TYPE_UINT64,
PROP_TYPE_TADDR,
PROP_TYPE_MACADDR,
PROP_TYPE_PTR,
};
struct PropertyInfo {
const char *name;
size_t size;
enum PropertyType type;
int (*parse)(DeviceState *dev, Property *prop, const char *str);
int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
};
struct CompatProperty {
const char *driver;
const char *property;
const char *value;
};
/*** Board API. This should go away once we have a machine config file. ***/
DeviceState *qdev_create(BusState *bus, const char *name);
DeviceState *qdev_device_add(const char *cmdline);
void qdev_init(DeviceState *dev);
void qdev_free(DeviceState *dev);
qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
/*** Device API. ***/
typedef void (*qdev_initfn)(DeviceState *dev, DeviceInfo *info);
typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
int unit);
struct DeviceInfo {
const char *name;
const char *alias;
const char *desc;
size_t size;
Property *props;
int no_user;
/* Private to qdev / bus. */
qdev_initfn init;
BusInfo *bus_info;
struct DeviceInfo *next;
};
void qdev_register(DeviceInfo *info);
/* Register device properties. */
/* GPIO inputs also double as IRQ sinks. */
void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
void scsi_bus_new(DeviceState *host, SCSIAttachFn attach);
CharDriverState *qdev_init_chardev(DeviceState *dev);
BusState *qdev_get_parent_bus(DeviceState *dev);
/* Convery from a base type to a parent type, with compile time checking. */
#ifdef __GNUC__
#define DO_UPCAST(type, field, dev) ( __extension__ ( { \
char __attribute__((unused)) offset_must_be_zero[ \
-offsetof(type, field)]; \
container_of(dev, type, field);}))
#else
#define DO_UPCAST(type, field, dev) container_of(dev, type, field)
#endif
/*** BUS API. ***/
BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
#define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
/*** monitor commands ***/
void do_info_qtree(Monitor *mon);
void do_info_qdrv(Monitor *mon);
/*** qdev-properties.c ***/
extern PropertyInfo qdev_prop_uint16;
extern PropertyInfo qdev_prop_uint32;
extern PropertyInfo qdev_prop_uint64;
extern PropertyInfo qdev_prop_hex32;
extern PropertyInfo qdev_prop_hex64;
extern PropertyInfo qdev_prop_ptr;
extern PropertyInfo qdev_prop_macaddr;
extern PropertyInfo qdev_prop_pci_devfn;
/* Set properties between creation and init. */
void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type);
void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
/* FIXME: Remove opaque pointer properties. */
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
void qdev_prop_set_defaults(DeviceState *dev, Property *props);
void qdev_prop_register_compat(CompatProperty *props);
void qdev_prop_set_compat(DeviceState *dev);
/* This is a nasty hack to allow passing a NULL bus to qdev_create. */
extern struct BusInfo system_bus_info;
#endif