64 	ssize_t (*show)(struct iommu_group *group, char *buf);
65 	ssize_t (*store)(struct iommu_group *group,
82 	struct iommu_group *group = to_iommu_group(kobj);  in iommu_group_attr_show()  local
86 		ret = attr->show(group, buf);  in iommu_group_attr_show()
95 	struct iommu_group *group = to_iommu_group(kobj);  in iommu_group_attr_store()  local
99 		ret = attr->store(group, buf, count);  in iommu_group_attr_store()
108 static int iommu_group_create_file(struct iommu_group *group,  in iommu_group_create_file()  argument
111 	return sysfs_create_file(&group->kobj, &attr->attr);  in iommu_group_create_file()
114 static void iommu_group_remove_file(struct iommu_group *group,  in iommu_group_remove_file()  argument
117 	sysfs_remove_file(&group->kobj, &attr->attr);  in iommu_group_remove_file()
120 static ssize_t iommu_group_show_name(struct iommu_group *group, char *buf)  in iommu_group_show_name()  argument
122 	return sprintf(buf, "%s\n", group->name);  in iommu_group_show_name()
129 	struct iommu_group *group = to_iommu_group(kobj);  in iommu_group_release()  local
131 	if (group->iommu_data_release)  in iommu_group_release()
132 		group->iommu_data_release(group->iommu_data);  in iommu_group_release()
135 	ida_remove(&iommu_group_ida, group->id);  in iommu_group_release()
138 	kfree(group->name);  in iommu_group_release()
139 	kfree(group);  in iommu_group_release()
161 	struct iommu_group *group;  in iommu_group_alloc()  local
164 	group = kzalloc(sizeof(*group), GFP_KERNEL);  in iommu_group_alloc()
165 	if (!group)  in iommu_group_alloc()
168 	group->kobj.kset = iommu_group_kset;  in iommu_group_alloc()
169 	mutex_init(&group->mutex);  in iommu_group_alloc()
170 	INIT_LIST_HEAD(&group->devices);  in iommu_group_alloc()
171 	BLOCKING_INIT_NOTIFIER_HEAD(&group->notifier);  in iommu_group_alloc()
177 		kfree(group);  in iommu_group_alloc()
182 	if (-EAGAIN == ida_get_new(&iommu_group_ida, &group->id))  in iommu_group_alloc()
187 	ret = kobject_init_and_add(&group->kobj, &iommu_group_ktype,  in iommu_group_alloc()
188 				   NULL, "%d", group->id);  in iommu_group_alloc()
191 		ida_remove(&iommu_group_ida, group->id);  in iommu_group_alloc()
193 		kfree(group);  in iommu_group_alloc()
197 	group->devices_kobj = kobject_create_and_add("devices", &group->kobj);  in iommu_group_alloc()
198 	if (!group->devices_kobj) {  in iommu_group_alloc()
199 		kobject_put(&group->kobj); /* triggers .release & free */  in iommu_group_alloc()
208 	kobject_put(&group->kobj);  in iommu_group_alloc()
210 	return group;  in iommu_group_alloc()
217 	struct iommu_group *group;  in iommu_group_get_by_id()  local
233 	group = container_of(group_kobj, struct iommu_group, kobj);  in iommu_group_get_by_id()
234 	BUG_ON(group->id != id);  in iommu_group_get_by_id()
236 	kobject_get(group->devices_kobj);  in iommu_group_get_by_id()
237 	kobject_put(&group->kobj);  in iommu_group_get_by_id()
239 	return group;  in iommu_group_get_by_id()
251 void *iommu_group_get_iommudata(struct iommu_group *group)  in iommu_group_get_iommudata()  argument
253 	return group->iommu_data;  in iommu_group_get_iommudata()
267 void iommu_group_set_iommudata(struct iommu_group *group, void *iommu_data,  in iommu_group_set_iommudata()  argument
270 	group->iommu_data = iommu_data;  in iommu_group_set_iommudata()
271 	group->iommu_data_release = release;  in iommu_group_set_iommudata()
283 int iommu_group_set_name(struct iommu_group *group, const char *name)  in iommu_group_set_name()  argument
287 	if (group->name) {  in iommu_group_set_name()
288 		iommu_group_remove_file(group, &iommu_group_attr_name);  in iommu_group_set_name()
289 		kfree(group->name);  in iommu_group_set_name()
290 		group->name = NULL;  in iommu_group_set_name()
295 	group->name = kstrdup(name, GFP_KERNEL);  in iommu_group_set_name()
296 	if (!group->name)  in iommu_group_set_name()
299 	ret = iommu_group_create_file(group, &iommu_group_attr_name);  in iommu_group_set_name()
301 		kfree(group->name);  in iommu_group_set_name()
302 		group->name = NULL;  in iommu_group_set_name()
318 int iommu_group_add_device(struct iommu_group *group, struct device *dev)  in iommu_group_add_device()  argument
329 	ret = sysfs_create_link(&dev->kobj, &group->kobj, "iommu_group");  in iommu_group_add_device()
343 	ret = sysfs_create_link_nowarn(group->devices_kobj,  in iommu_group_add_device()
362 	kobject_get(group->devices_kobj);  in iommu_group_add_device()
364 	dev->iommu_group = group;  in iommu_group_add_device()
366 	mutex_lock(&group->mutex);  in iommu_group_add_device()
367 	list_add_tail(&device->list, &group->devices);  in iommu_group_add_device()
368 	mutex_unlock(&group->mutex);  in iommu_group_add_device()
371 	blocking_notifier_call_chain(&group->notifier,  in iommu_group_add_device()
374 	trace_add_device_to_group(group->id, dev);  in iommu_group_add_device()
388 	struct iommu_group *group = dev->iommu_group;  in iommu_group_remove_device()  local
392 	blocking_notifier_call_chain(&group->notifier,  in iommu_group_remove_device()
395 	mutex_lock(&group->mutex);  in iommu_group_remove_device()
396 	list_for_each_entry(tmp_device, &group->devices, list) {  in iommu_group_remove_device()
403 	mutex_unlock(&group->mutex);  in iommu_group_remove_device()
408 	sysfs_remove_link(group->devices_kobj, device->name);  in iommu_group_remove_device()
411 	trace_remove_device_from_group(group->id, dev);  in iommu_group_remove_device()
416 	kobject_put(group->devices_kobj);  in iommu_group_remove_device()
431 int iommu_group_for_each_dev(struct iommu_group *group, void *data,  in iommu_group_for_each_dev()  argument
437 	mutex_lock(&group->mutex);  in iommu_group_for_each_dev()
438 	list_for_each_entry(device, &group->devices, list) {  in iommu_group_for_each_dev()
443 	mutex_unlock(&group->mutex);  in iommu_group_for_each_dev()
458 	struct iommu_group *group = dev->iommu_group;  in iommu_group_get()  local
460 	if (group)  in iommu_group_get()
461 		kobject_get(group->devices_kobj);  in iommu_group_get()
463 	return group;  in iommu_group_get()
474 void iommu_group_put(struct iommu_group *group)  in iommu_group_put()  argument
476 	if (group)  in iommu_group_put()
477 		kobject_put(group->devices_kobj);  in iommu_group_put()
490 int iommu_group_register_notifier(struct iommu_group *group,  in iommu_group_register_notifier()  argument
493 	return blocking_notifier_chain_register(&group->notifier, nb);  in iommu_group_register_notifier()
504 int iommu_group_unregister_notifier(struct iommu_group *group,  in iommu_group_unregister_notifier()  argument
507 	return blocking_notifier_chain_unregister(&group->notifier, nb);  in iommu_group_unregister_notifier()
517 int iommu_group_id(struct iommu_group *group)  in iommu_group_id()  argument
519 	return group->id;  in iommu_group_id()
546 	struct iommu_group *group;  in get_pci_function_alias_group()  local
557 		group = get_pci_alias_group(tmp, devfns);  in get_pci_function_alias_group()
558 		if (group) {  in get_pci_function_alias_group()
560 			return group;  in get_pci_function_alias_group()
580 	struct iommu_group *group;  in get_pci_alias_group()  local
585 	group = iommu_group_get(&pdev->dev);  in get_pci_alias_group()
586 	if (group)  in get_pci_alias_group()
587 		return group;  in get_pci_alias_group()
599 			group = get_pci_alias_group(tmp, devfns);  in get_pci_alias_group()
600 			if (group) {  in get_pci_alias_group()
602 				return group;  in get_pci_alias_group()
605 			group = get_pci_function_alias_group(tmp, devfns);  in get_pci_alias_group()
606 			if (group) {  in get_pci_alias_group()
608 				return group;  in get_pci_alias_group()
618 	struct iommu_group *group;  member
630 	data->group = iommu_group_get(&pdev->dev);  in get_pci_alias_or_group()
632 	return data->group != NULL;  in get_pci_alias_or_group()
643 	struct iommu_group *group = NULL;  in iommu_group_get_for_pci_dev()  local
653 		return data.group;  in iommu_group_get_for_pci_dev()
672 		group = iommu_group_get(&pdev->dev);  in iommu_group_get_for_pci_dev()
673 		if (group)  in iommu_group_get_for_pci_dev()
674 			return group;  in iommu_group_get_for_pci_dev()
681 	group = get_pci_alias_group(pdev, (unsigned long *)devfns);  in iommu_group_get_for_pci_dev()
682 	if (group)  in iommu_group_get_for_pci_dev()
683 		return group;  in iommu_group_get_for_pci_dev()
690 	group = get_pci_function_alias_group(pdev, (unsigned long *)devfns);  in iommu_group_get_for_pci_dev()
691 	if (group)  in iommu_group_get_for_pci_dev()
692 		return group;  in iommu_group_get_for_pci_dev()
710 	struct iommu_group *group;  in iommu_group_get_for_dev()  local
713 	group = iommu_group_get(dev);  in iommu_group_get_for_dev()
714 	if (group)  in iommu_group_get_for_dev()
715 		return group;  in iommu_group_get_for_dev()
720 	group = iommu_group_get_for_pci_dev(to_pci_dev(dev));  in iommu_group_get_for_dev()
722 	if (IS_ERR(group))  in iommu_group_get_for_dev()
723 		return group;  in iommu_group_get_for_dev()
725 	ret = iommu_group_add_device(group, dev);  in iommu_group_get_for_dev()
727 		iommu_group_put(group);  in iommu_group_get_for_dev()
731 	return group;  in iommu_group_get_for_dev()
754 	struct iommu_group *group;  in iommu_bus_notifier()  local
775 	group = iommu_group_get(dev);  in iommu_bus_notifier()
776 	if (!group)  in iommu_bus_notifier()
795 		blocking_notifier_call_chain(&group->notifier,  in iommu_bus_notifier()
798 	iommu_group_put(group);  in iommu_bus_notifier()
965 int iommu_attach_group(struct iommu_domain *domain, struct iommu_group *group)  in iommu_attach_group()  argument
967 	return iommu_group_for_each_dev(group, domain,  in iommu_attach_group()
981 void iommu_detach_group(struct iommu_domain *domain, struct iommu_group *group)  in iommu_detach_group()  argument
983 	iommu_group_for_each_dev(group, domain, iommu_group_do_detach_device);  in iommu_detach_group()