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qdev child bus support

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Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-05-14 22:35:06 +01:00
parent aae9460e24
commit 4d6ae6741e
2 changed files with 36 additions and 0 deletions
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30
hw/qdev.c
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@ -46,6 +46,12 @@ struct DeviceType {
DeviceType *next;
};
struct ChildBusList {
const char *name;
void *ptr;
ChildBusList *next;
};
static DeviceType *device_type_list;
/* Register a new device type. */
@ -235,3 +241,27 @@ BlockDriverState *qdev_init_bdrv(DeviceState *dev, BlockInterfaceType type)
}
return drives_table[index].bdrv;
}
void *qdev_get_child_bus(DeviceState *dev, const char *name)
{
ChildBusList *bus;
for (bus = dev->child_bus; bus; bus = bus->next) {
if (strcmp(name, bus->name) == 0) {
return bus->ptr;
}
}
return NULL;
}
void qdev_attach_child_bus(DeviceState *dev, const char *name, void *bus)
{
ChildBusList *p;
assert(!qdev_get_child_bus(dev, name));
p = qemu_mallocz(sizeof(*p));
p->name = qemu_strdup(name);
p->ptr = bus;
p->next = dev->child_bus;
dev->child_bus = p;
}

6
hw/qdev.h
View File

@ -7,6 +7,8 @@ typedef struct DeviceType DeviceType;
typedef struct DeviceProperty DeviceProperty;
typedef struct ChildBusList ChildBusList;
/* This structure should not be accessed directly. We declare it here
so that it can be embedded in individual device state structures. */
struct DeviceState
@ -21,6 +23,7 @@ struct DeviceState
qemu_irq *gpio_out;
int num_gpio_in;
qemu_irq *gpio_in;
ChildBusList *child_bus;
};
/*** Board API. This should go away once we have a machine config file. ***/
@ -36,6 +39,8 @@ qemu_irq qdev_get_irq_sink(DeviceState *dev, int n);
qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
void *qdev_get_child_bus(DeviceState *dev, const char *name);
/*** Device API. ***/
typedef void (*qdev_initfn)(DeviceState *dev, void *opaque);
@ -47,6 +52,7 @@ DeviceType *qdev_register(const char *name, int size, qdev_initfn init,
void qdev_init_irq_sink(DeviceState *dev, qemu_irq_handler handler, int nirq);
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 qdev_attach_child_bus(DeviceState *dev, const char *name, void *bus);
CharDriverState *qdev_init_chardev(DeviceState *dev);