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qdev: switch children device list to QTAILQ 

SCSI buses will need to read the children list first-to-last.  This
requires using a QTAILQ, because hell breaks loose if you just try
inserting at the tail (thus reversing the order of all existing
visits from last-to-first to first-to-tail).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2011-09-14 09:28:06 +02:00 committed by Kevin Wolf
parent afd4030c16
commit d8bb00d6d7
8 changed files with 28 additions and 28 deletions
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4
hw/acpi_piix4.c
View File

@ -276,7 +276,7 @@ static void piix4_update_hotplug(PIIX4PMState *s)
s->pci0_hotplug_enable = ~0;
QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) {
QTAILQ_FOREACH_SAFE(qdev, &bus->children, sibling, next) {
PCIDeviceInfo *info = container_of(qdev->info, PCIDeviceInfo, qdev);
PCIDevice *pdev = DO_UPCAST(PCIDevice, qdev, qdev);
int slot = PCI_SLOT(pdev->devfn);
@ -486,7 +486,7 @@ static void pciej_write(void *opaque, uint32_t addr, uint32_t val)
PCIDeviceInfo *info;
int slot = ffs(val) - 1;
QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) {
QTAILQ_FOREACH_SAFE(qdev, &bus->children, sibling, next) {
dev = DO_UPCAST(PCIDevice, qdev, qdev);
info = container_of(qdev->info, PCIDeviceInfo, qdev);
if (PCI_SLOT(dev->devfn) == slot && !info->no_hotplug) {

2
hw/i2c.c
View File

@ -84,7 +84,7 @@ int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv)
DeviceState *qdev;
i2c_slave *slave = NULL;
QLIST_FOREACH(qdev, &bus->qbus.children, sibling) {
QTAILQ_FOREACH(qdev, &bus->qbus.children, sibling) {
i2c_slave *candidate = I2C_SLAVE_FROM_QDEV(qdev);
if (candidate->address == address) {
slave = candidate;

6
hw/intel-hda.c
View File

@ -86,7 +86,7 @@ HDACodecDevice *hda_codec_find(HDACodecBus *bus, uint32_t cad)
DeviceState *qdev;
HDACodecDevice *cdev;
QLIST_FOREACH(qdev, &bus->qbus.children, sibling) {
QTAILQ_FOREACH(qdev, &bus->qbus.children, sibling) {
cdev = DO_UPCAST(HDACodecDevice, qdev, qdev);
if (cdev->cad == cad) {
return cdev;
@ -490,7 +490,7 @@ static void intel_hda_notify_codecs(IntelHDAState *d, uint32_t stream, bool runn
DeviceState *qdev;
HDACodecDevice *cdev;
QLIST_FOREACH(qdev, &d->codecs.qbus.children, sibling) {
QTAILQ_FOREACH(qdev, &d->codecs.qbus.children, sibling) {
cdev = DO_UPCAST(HDACodecDevice, qdev, qdev);
if (cdev->info->stream) {
cdev->info->stream(cdev, stream, running, output);
@ -1114,7 +1114,7 @@ static void intel_hda_reset(DeviceState *dev)
d->wall_base_ns = qemu_get_clock_ns(vm_clock);
/* reset codecs */
QLIST_FOREACH(qdev, &d->codecs.qbus.children, sibling) {
QTAILQ_FOREACH(qdev, &d->codecs.qbus.children, sibling) {
cdev = DO_UPCAST(HDACodecDevice, qdev, qdev);
if (qdev->info->reset) {
qdev->info->reset(qdev);

24
hw/qdev.c
View File

@ -91,7 +91,7 @@ static DeviceState *qdev_create_from_info(BusState *bus, DeviceInfo *info)
qdev_prop_set_defaults(dev, dev->info->props);
qdev_prop_set_defaults(dev, dev->parent_bus->info->props);
qdev_prop_set_globals(dev);
QLIST_INSERT_HEAD(&bus->children, dev, sibling);
QTAILQ_INSERT_HEAD(&bus->children, dev, sibling);
if (qdev_hotplug) {
assert(bus->allow_hotplug);
dev->hotplugged = 1;
@ -408,7 +408,7 @@ void qdev_free(DeviceState *dev)
if (dev->opts)
qemu_opts_del(dev->opts);
}
QLIST_REMOVE(dev, sibling);
QTAILQ_REMOVE(&dev->parent_bus->children, dev, sibling);
for (prop = dev->info->props; prop && prop->name; prop++) {
if (prop->info->free) {
prop->info->free(dev, prop);
@ -510,7 +510,7 @@ int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
}
}
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
err = qdev_walk_children(dev, devfn, busfn, opaque);
if (err < 0) {
return err;
@ -560,7 +560,7 @@ static BusState *qbus_find_recursive(BusState *bus, const char *name,
return bus;
}
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
QLIST_FOREACH(child, &dev->child_bus, sibling) {
ret = qbus_find_recursive(child, name, info);
if (ret) {
@ -576,7 +576,7 @@ DeviceState *qdev_find_recursive(BusState *bus, const char *id)
DeviceState *dev, *ret;
BusState *child;
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
if (dev->id && strcmp(dev->id, id) == 0)
return dev;
QLIST_FOREACH(child, &dev->child_bus, sibling) {
@ -609,7 +609,7 @@ static void qbus_list_dev(BusState *bus)
const char *sep = " ";
error_printf("devices at \"%s\":", bus->name);
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
error_printf("%s\"%s\"", sep, dev->info->name);
if (dev->id)
error_printf("/\"%s\"", dev->id);
@ -640,17 +640,17 @@ static DeviceState *qbus_find_dev(BusState *bus, char *elem)
* (2) driver name
* (3) driver alias, if present
*/
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
if (dev->id && strcmp(dev->id, elem) == 0) {
return dev;
}
}
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
if (strcmp(dev->info->name, elem) == 0) {
return dev;
}
}
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
if (dev->info->alias && strcmp(dev->info->alias, elem) == 0) {
return dev;
}
@ -774,7 +774,7 @@ void qbus_create_inplace(BusState *bus, BusInfo *info,
bus->name = buf;
}
QLIST_INIT(&bus->children);
QTAILQ_INIT(&bus->children);
if (parent) {
QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling);
parent->num_child_bus++;
@ -809,7 +809,7 @@ void qbus_free(BusState *bus)
{
DeviceState *dev;
while ((dev = QLIST_FIRST(&bus->children)) != NULL) {
while ((dev = QTAILQ_FIRST(&bus->children)) != NULL) {
qdev_free(dev);
}
if (bus->parent) {
@ -878,7 +878,7 @@ static void qbus_print(Monitor *mon, BusState *bus, int indent)
qdev_printf("bus: %s\n", bus->name);
indent += 2;
qdev_printf("type %s\n", bus->info->name);
QLIST_FOREACH(dev, &bus->children, sibling) {
QTAILQ_FOREACH(dev, &bus->children, sibling) {
qdev_print(mon, dev, indent);
}
}

4
hw/qdev.h
View File

@ -42,7 +42,7 @@ struct DeviceState {
qemu_irq *gpio_in;
QLIST_HEAD(, BusState) child_bus;
int num_child_bus;
QLIST_ENTRY(DeviceState) sibling;
QTAILQ_ENTRY(DeviceState) sibling;
int instance_id_alias;
int alias_required_for_version;
};
@ -73,7 +73,7 @@ struct BusState {
const char *name;
int allow_hotplug;
int qdev_allocated;
QLIST_HEAD(, DeviceState) children;
QTAILQ_HEAD(, DeviceState) children;
QLIST_ENTRY(BusState) sibling;
};

4
hw/s390-virtio-bus.c
View File

@ -274,7 +274,7 @@ VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
DeviceState *dev;
int i;
QLIST_FOREACH(dev, &bus->bus.children, sibling) {
QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
_dev = (VirtIOS390Device *)dev;
for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
if (!virtio_queue_get_addr(_dev->vdev, i))
@ -297,7 +297,7 @@ VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
VirtIOS390Device *_dev;
DeviceState *dev;
QLIST_FOREACH(dev, &bus->bus.children, sibling) {
QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
_dev = (VirtIOS390Device *)dev;
if (_dev->dev_offs == mem) {
return _dev;

6
hw/spapr_vio.c
View File

@ -63,7 +63,7 @@ VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg)
DeviceState *qdev;
VIOsPAPRDevice *dev = NULL;
QLIST_FOREACH(qdev, &bus->bus.children, sibling) {
QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) {
dev = (VIOsPAPRDevice *)qdev;
if (dev->reg == reg) {
break;
@ -588,7 +588,7 @@ static void rtas_quiesce(sPAPREnvironment *spapr, uint32_t token,
return;
}
QLIST_FOREACH(qdev, &bus->bus.children, sibling) {
QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) {
dev = (VIOsPAPRDevice *)qdev;
spapr_vio_quiesce_one(dev);
}
@ -726,7 +726,7 @@ int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt)
DeviceState *qdev;
int ret = 0;
QLIST_FOREACH(qdev, &bus->bus.children, sibling) {
QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) {
VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev;
ret = vio_make_devnode(dev, fdt);

6
hw/ssi.c
View File

@ -25,8 +25,8 @@ static int ssi_slave_init(DeviceState *dev, DeviceInfo *base_info)
SSIBus *bus;
bus = FROM_QBUS(SSIBus, qdev_get_parent_bus(dev));
if (QLIST_FIRST(&bus->qbus.children) != dev
|| QLIST_NEXT(dev, sibling) != NULL) {
if (QTAILQ_FIRST(&bus->qbus.children) != dev
|| QTAILQ_NEXT(dev, sibling) != NULL) {
hw_error("Too many devices on SSI bus");
}
@ -61,7 +61,7 @@ uint32_t ssi_transfer(SSIBus *bus, uint32_t val)
{
DeviceState *dev;
SSISlave *slave;
dev = QLIST_FIRST(&bus->qbus.children);
dev = QTAILQ_FIRST(&bus->qbus.children);
if (!dev) {
return 0;
}