128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
#ifndef QDEV_H
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#define QDEV_H
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#include "hw.h"
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#include "sys-queue.h"
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typedef struct DeviceInfo DeviceInfo;
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typedef struct DeviceProperty DeviceProperty;
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typedef struct BusState BusState;
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typedef struct BusInfo BusInfo;
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/* This structure should not be accessed directly. We declare it here
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so that it can be embedded in individual device state structures. */
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struct DeviceState {
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DeviceInfo *info;
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BusState *parent_bus;
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DeviceProperty *props;
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int num_gpio_out;
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qemu_irq *gpio_out;
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int num_gpio_in;
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qemu_irq *gpio_in;
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LIST_HEAD(, BusState) child_bus;
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NICInfo *nd;
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LIST_ENTRY(DeviceState) sibling;
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};
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typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
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struct BusInfo {
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const char *name;
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size_t size;
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bus_dev_printfn print_dev;
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};
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struct BusState {
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DeviceState *parent;
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BusInfo *info;
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const char *name;
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LIST_HEAD(, DeviceState) children;
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LIST_ENTRY(BusState) sibling;
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};
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/*** Board API. This should go away once we have a machine config file. ***/
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DeviceState *qdev_create(BusState *bus, const char *name);
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void qdev_init(DeviceState *dev);
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void qdev_free(DeviceState *dev);
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/* Set properties between creation and init. */
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void qdev_set_prop_int(DeviceState *dev, const char *name, uint64_t value);
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void qdev_set_prop_dev(DeviceState *dev, const char *name, DeviceState *value);
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void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value);
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void qdev_set_netdev(DeviceState *dev, NICInfo *nd);
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qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
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void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
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BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
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/*** Device API. ***/
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typedef enum {
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PROP_TYPE_INT,
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PROP_TYPE_PTR,
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PROP_TYPE_DEV
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} DevicePropType;
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typedef struct {
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const char *name;
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DevicePropType type;
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} DevicePropList;
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typedef void (*qdev_initfn)(DeviceState *dev, DeviceInfo *info);
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typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv,
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int unit);
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struct DeviceInfo {
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const char *name;
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size_t size;
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DevicePropList *props;
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/* Private to qdev / bus. */
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qdev_initfn init;
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BusInfo *bus_info;
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struct DeviceInfo *next;
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};
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void qdev_register(DeviceInfo *info);
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/* Register device properties. */
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/* GPIO inputs also double as IRQ sinks. */
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void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
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void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
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void scsi_bus_new(DeviceState *host, SCSIAttachFn attach);
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CharDriverState *qdev_init_chardev(DeviceState *dev);
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BusState *qdev_get_parent_bus(DeviceState *dev);
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uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def);
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DeviceState *qdev_get_prop_dev(DeviceState *dev, const char *name);
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/* FIXME: Remove opaque pointer properties. */
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void *qdev_get_prop_ptr(DeviceState *dev, const char *name);
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/* Convery from a base type to a parent type, with compile time checking. */
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#ifdef __GNUC__
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#define DO_UPCAST(type, field, dev) ( __extension__ ( { \
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char __attribute__((unused)) offset_must_be_zero[ \
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-offsetof(type, field)]; \
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container_of(dev, type, field);}))
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#else
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#define DO_UPCAST(type, field, dev) container_of(dev, type, field)
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#endif
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/*** BUS API. ***/
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BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
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#define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
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/*** monitor commands ***/
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void do_info_qtree(Monitor *mon);
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#endif
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