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qemu/hw/qdev.h
Michael Roth 09f1bbcd83 qdev: Use int32_t container for devfn property 
Valid range for devfn is -1 to 255 (-1 for automatic assignment). We do
not currently validate this due to devfn being stored as a uint32_t.
This can lead to segfaults and other strange behavior.

We could technically just cast it to int32_t to implement the checking,
but this will not work for visitor-based setting where we may do additional
bounds-checking based on target container type, which is int32_t for this
case.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-08 16:11:14 +02:00

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#ifndef QDEV_H
#define QDEV_H
#include "hw.h"
#include "qemu-queue.h"
#include "qemu-char.h"
#include "qemu-option.h"
#include "qapi/qapi-visit-core.h"
#include "qemu/object.h"
#include "error.h"
typedef struct Property Property;
typedef struct PropertyInfo PropertyInfo;
typedef struct CompatProperty CompatProperty;
typedef struct BusState BusState;
typedef struct BusInfo BusInfo;
enum DevState {
DEV_STATE_CREATED = 1,
DEV_STATE_INITIALIZED,
};
enum {
DEV_NVECTORS_UNSPECIFIED = -1,
};
#define TYPE_DEVICE "device"
#define DEVICE(obj) OBJECT_CHECK(DeviceState, (obj), TYPE_DEVICE)
#define DEVICE_CLASS(klass) OBJECT_CLASS_CHECK(DeviceClass, (klass), TYPE_DEVICE)
#define DEVICE_GET_CLASS(obj) OBJECT_GET_CLASS(DeviceClass, (obj), TYPE_DEVICE)
typedef int (*qdev_initfn)(DeviceState *dev);
typedef int (*qdev_event)(DeviceState *dev);
typedef void (*qdev_resetfn)(DeviceState *dev);
typedef struct DeviceClass {
ObjectClass parent_class;
const char *fw_name;
const char *desc;
Property *props;
int no_user;
/* callbacks */
void (*reset)(DeviceState *dev);
/* device state */
const VMStateDescription *vmsd;
/* Private to qdev / bus. */
qdev_initfn init;
qdev_event unplug;
qdev_event exit;
BusInfo *bus_info;
} DeviceClass;
/* This structure should not be accessed directly. We declare it here
so that it can be embedded in individual device state structures. */
struct DeviceState {
Object parent_obj;
const char *id;
enum DevState state;
QemuOpts *opts;
int hotplugged;
BusState *parent_bus;
int num_gpio_out;
qemu_irq *gpio_out;
int num_gpio_in;
qemu_irq *gpio_in;
QLIST_HEAD(, BusState) child_bus;
int num_child_bus;
QTAILQ_ENTRY(DeviceState) sibling;
int instance_id_alias;
int alias_required_for_version;
};
typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
typedef char *(*bus_get_dev_path)(DeviceState *dev);
/*
* This callback is used to create Open Firmware device path in accordance with
* OF spec http://forthworks.com/standards/of1275.pdf. Indicidual bus bindings
* can be found here http://playground.sun.com/1275/bindings/.
*/
typedef char *(*bus_get_fw_dev_path)(DeviceState *dev);
typedef int (qbus_resetfn)(BusState *bus);
struct BusInfo {
const char *name;
size_t size;
bus_dev_printfn print_dev;
bus_get_dev_path get_dev_path;
bus_get_fw_dev_path get_fw_dev_path;
qbus_resetfn *reset;
Property *props;
};
struct BusState {
DeviceState *parent;
BusInfo *info;
const char *name;
int allow_hotplug;
int qdev_allocated;
QTAILQ_HEAD(ChildrenHead, DeviceState) children;
QLIST_ENTRY(BusState) sibling;
};
struct Property {
const char *name;
PropertyInfo *info;
int offset;
uint8_t bitnr;
uint8_t qtype;
int64_t defval;
};
struct PropertyInfo {
const char *name;
const char *legacy_name;
const char **enum_table;
int64_t min;
int64_t max;
int (*parse)(DeviceState *dev, Property *prop, const char *str);
int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
ObjectPropertyAccessor *get;
ObjectPropertyAccessor *set;
ObjectPropertyRelease *release;
};
typedef struct GlobalProperty {
const char *driver;
const char *property;
const char *value;
QTAILQ_ENTRY(GlobalProperty) next;
} GlobalProperty;
/*** Board API. This should go away once we have a machine config file. ***/
DeviceState *qdev_create(BusState *bus, const char *name);
DeviceState *qdev_try_create(BusState *bus, const char *name);
bool qdev_exists(const char *name);
int qdev_device_help(QemuOpts *opts);
DeviceState *qdev_device_add(QemuOpts *opts);
int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
void qdev_init_nofail(DeviceState *dev);
void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
int required_for_version);
void qdev_unplug(DeviceState *dev, Error **errp);
void qdev_free(DeviceState *dev);
int qdev_simple_unplug_cb(DeviceState *dev);
void qdev_machine_creation_done(void);
bool qdev_machine_modified(void);
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. ***/
/* 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);
BusState *qdev_get_parent_bus(DeviceState *dev);
/*** BUS API. ***/
DeviceState *qdev_find_recursive(BusState *bus, const char *id);
/* Returns 0 to walk children, > 0 to skip walk, < 0 to terminate walk. */
typedef int (qbus_walkerfn)(BusState *bus, void *opaque);
typedef int (qdev_walkerfn)(DeviceState *dev, void *opaque);
void qbus_create_inplace(BusState *bus, BusInfo *info,
DeviceState *parent, const char *name);
BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
/* Returns > 0 if either devfn or busfn skip walk somewhere in cursion,
* < 0 if either devfn or busfn terminate walk somewhere in cursion,
* 0 otherwise. */
int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
qbus_walkerfn *busfn, void *opaque);
int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
qbus_walkerfn *busfn, void *opaque);
void qdev_reset_all(DeviceState *dev);
void qbus_reset_all_fn(void *opaque);
void qbus_free(BusState *bus);
#define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
/* This should go away once we get rid of the NULL bus hack */
BusState *sysbus_get_default(void);
/*** monitor commands ***/
void do_info_qtree(Monitor *mon);
void do_info_qdm(Monitor *mon);
int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
/*** qdev-properties.c ***/
extern PropertyInfo qdev_prop_bit;
extern PropertyInfo qdev_prop_uint8;
extern PropertyInfo qdev_prop_uint16;
extern PropertyInfo qdev_prop_uint32;
extern PropertyInfo qdev_prop_int32;
extern PropertyInfo qdev_prop_uint64;
extern PropertyInfo qdev_prop_hex8;
extern PropertyInfo qdev_prop_hex32;
extern PropertyInfo qdev_prop_hex64;
extern PropertyInfo qdev_prop_string;
extern PropertyInfo qdev_prop_chr;
extern PropertyInfo qdev_prop_ptr;
extern PropertyInfo qdev_prop_macaddr;
extern PropertyInfo qdev_prop_losttickpolicy;
extern PropertyInfo qdev_prop_drive;
extern PropertyInfo qdev_prop_netdev;
extern PropertyInfo qdev_prop_vlan;
extern PropertyInfo qdev_prop_pci_devfn;
extern PropertyInfo qdev_prop_blocksize;
#define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
.name = (_name), \
.info = &(_prop), \
.offset = offsetof(_state, _field) \
+ type_check(_type,typeof_field(_state, _field)), \
}
#define DEFINE_PROP_DEFAULT(_name, _state, _field, _defval, _prop, _type) { \
.name = (_name), \
.info = &(_prop), \
.offset = offsetof(_state, _field) \
+ type_check(_type,typeof_field(_state, _field)), \
.qtype = QTYPE_QINT, \
.defval = (_type)_defval, \
}
#define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) { \
.name = (_name), \
.info = &(qdev_prop_bit), \
.bitnr = (_bit), \
.offset = offsetof(_state, _field) \
+ type_check(uint32_t,typeof_field(_state, _field)), \
.qtype = QTYPE_QBOOL, \
.defval = (bool)_defval, \
}
#define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
#define DEFINE_PROP_UINT16(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
#define DEFINE_PROP_UINT32(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
#define DEFINE_PROP_INT32(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_int32, int32_t)
#define DEFINE_PROP_UINT64(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
#define DEFINE_PROP_HEX8(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex8, uint8_t)
#define DEFINE_PROP_HEX32(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex32, uint32_t)
#define DEFINE_PROP_HEX64(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex64, uint64_t)
#define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
#define DEFINE_PROP_PTR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
#define DEFINE_PROP_CHR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
#define DEFINE_PROP_STRING(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
#define DEFINE_PROP_NETDEV(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, VLANClientState*)
#define DEFINE_PROP_VLAN(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, VLANState*)
#define DEFINE_PROP_DRIVE(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
#define DEFINE_PROP_MACADDR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
LostTickPolicy)
#define DEFINE_PROP_BLOCKSIZE(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_blocksize, uint16_t)
#define DEFINE_PROP_END_OF_LIST() \
{}
/* Set properties between creation and init. */
void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
int qdev_prop_exists(DeviceState *dev, const char *name);
int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
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_int32(DeviceState *dev, const char *name, int32_t value);
void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
void qdev_prop_set_string(DeviceState *dev, const char *name, char *value);
void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value);
void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value);
int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
void qdev_prop_set_enum(DeviceState *dev, const char *name, int 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_global_list(GlobalProperty *props);
void qdev_prop_set_globals(DeviceState *dev);
void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
Property *prop, const char *value);
char *qdev_get_fw_dev_path(DeviceState *dev);
/* This is a nasty hack to allow passing a NULL bus to qdev_create. */
extern struct BusInfo system_bus_info;
/**
* @qdev_property_add_static - add a @Property to a device referencing a
* field in a struct.
*/
void qdev_property_add_static(DeviceState *dev, Property *prop, Error **errp);
/**
* @qdev_machine_init
*
* Initialize platform devices before machine init. This is a hack until full
* support for composition is added.
*/
void qdev_machine_init(void);
/**
* @device_reset
*
* Reset a single device (by calling the reset method).
*/
void device_reset(DeviceState *dev);
const VMStateDescription *qdev_get_vmsd(DeviceState *dev);
const char *qdev_fw_name(DeviceState *dev);
BusInfo *qdev_get_bus_info(DeviceState *dev);
Property *qdev_get_props(DeviceState *dev);
Object *qdev_get_machine(void);
/* FIXME: make this a link<> */
void qdev_set_parent_bus(DeviceState *dev, BusState *bus);
extern int qdev_hotplug;
#endif
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