qdev: create default bus names.
Create a default bus name if none is passed to qbus_create(). If the parent device has DeviceState->id set it will be used to create the bus name,. i.e. -device lsi,id=foo will give you a scsi bus named "foo.0". If there is no id BusInfo->name (lowercased) will be used instead, i.e. -device lsi will give you a scsi bus named "scsi.0". A scsi adapter with two scsi busses would have "scsi.0" and "scsi.1" or "$id.0" and "$id.1" busses. The numbers of the child busses are per device, i.e. when adding two lsi adapters both will have a "*.0" child bus. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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parent
a6307b086b
commit
d271de9f1b
23
hw/qdev.c
23
hw/qdev.c
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@ -232,14 +232,37 @@ void scsi_bus_new(DeviceState *host, SCSIAttachFn attach)
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BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name)
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BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name)
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{
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{
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BusState *bus;
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BusState *bus;
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char *buf;
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int i,len;
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bus = qemu_mallocz(info->size);
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bus = qemu_mallocz(info->size);
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bus->info = info;
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bus->info = info;
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bus->parent = parent;
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bus->parent = parent;
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if (name) {
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/* use supplied name */
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bus->name = qemu_strdup(name);
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bus->name = qemu_strdup(name);
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} else if (parent && parent->id) {
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/* parent device has id -> use it for bus name */
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len = strlen(parent->id) + 16;
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buf = qemu_malloc(len);
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snprintf(buf, len, "%s.%d", parent->id, parent->num_child_bus);
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bus->name = buf;
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} else {
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/* no id -> use lowercase bus type for bus name */
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len = strlen(info->name) + 16;
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buf = qemu_malloc(len);
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len = snprintf(buf, len, "%s.%d", info->name,
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parent ? parent->num_child_bus : 0);
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for (i = 0; i < len; i++)
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buf[i] = tolower(buf[i]);
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bus->name = buf;
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}
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LIST_INIT(&bus->children);
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LIST_INIT(&bus->children);
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if (parent) {
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if (parent) {
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LIST_INSERT_HEAD(&parent->child_bus, bus, sibling);
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LIST_INSERT_HEAD(&parent->child_bus, bus, sibling);
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parent->num_child_bus++;
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}
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}
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return bus;
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return bus;
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}
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}
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@ -27,6 +27,7 @@ struct DeviceState {
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int num_gpio_in;
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int num_gpio_in;
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qemu_irq *gpio_in;
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qemu_irq *gpio_in;
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LIST_HEAD(, BusState) child_bus;
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LIST_HEAD(, BusState) child_bus;
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int num_child_bus;
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NICInfo *nd;
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NICInfo *nd;
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LIST_ENTRY(DeviceState) sibling;
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LIST_ENTRY(DeviceState) sibling;
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};
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};
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