176 static bool is_static(struct dax_region *dax_region)  in is_static()  argument
178 	return (dax_region->res.flags & IORESOURCE_DAX_STATIC) != 0;  in is_static()
204 	struct dax_region *dax_region = dev_dax->region;  in dax_bus_probe()  local
219 	if (rc || is_static(dax_region))  in dax_bus_probe()
226 	if (dax_region->seed == dev)  in dax_bus_probe()
227 		dax_region->seed = NULL;  in dax_bus_probe()
267 	struct dax_region *dax_region = dev_get_drvdata(dev);  in id_show()  local
269 	return sysfs_emit(buf, "%d\n", dax_region->id);  in id_show()
276 	struct dax_region *dax_region = dev_get_drvdata(dev);  in region_size_show()  local
279 			  (unsigned long long)resource_size(&dax_region->res));  in region_size_show()
287 	struct dax_region *dax_region = dev_get_drvdata(dev);  in region_align_show()  local
289 	return sysfs_emit(buf, "%u\n", dax_region->align);  in region_align_show()
294 #define for_each_dax_region_resource(dax_region, res) \  argument
295 	for (res = (dax_region)->res.child; res; res = res->sibling)
297 static unsigned long long dax_region_avail_size(struct dax_region *dax_region)  in dax_region_avail_size()  argument
299 	resource_size_t size = resource_size(&dax_region->res);  in dax_region_avail_size()
304 	for_each_dax_region_resource(dax_region, res)  in dax_region_avail_size()
312 	struct dax_region *dax_region = dev_get_drvdata(dev);  in available_size_show()  local
319 	size = dax_region_avail_size(dax_region);  in available_size_show()
329 	struct dax_region *dax_region = dev_get_drvdata(dev);  in seed_show()  local
333 	if (is_static(dax_region))  in seed_show()
339 	seed = dax_region->seed;  in seed_show()
350 	struct dax_region *dax_region = dev_get_drvdata(dev);  in create_show()  local
354 	if (is_static(dax_region))  in create_show()
360 	youngest = dax_region->youngest;  in create_show()
372 	struct dax_region *dax_region = dev_get_drvdata(dev);  in create_store()  local
377 	if (is_static(dax_region))  in create_store()
389 	avail = dax_region_avail_size(dax_region);  in create_store()
394 			.dax_region = dax_region,  in create_store()
411 			if (!dax_region->seed)  in create_store()
412 				dax_region->seed = &dev_dax->dev;  in create_store()
413 			dax_region->youngest = &dev_dax->dev;  in create_store()
445 	struct dax_region *dax_region = dev_dax->region;  in trim_dev_dax_range()  local
452 	__release_region(&dax_region->res, range->start, range_len(range));  in trim_dev_dax_range()
481 	struct dax_region *dax_region;  in dax_region_free()  local
483 	dax_region = container_of(kref, struct dax_region, kref);  in dax_region_free()
484 	kfree(dax_region);  in dax_region_free()
487 static void dax_region_put(struct dax_region *dax_region)  in dax_region_put()  argument
489 	kref_put(&dax_region->kref, dax_region_free);  in dax_region_put()
495 	struct dax_region *dax_region;  in __free_dev_dax_id()  local
502 	dax_region = dev_dax->region;  in __free_dev_dax_id()
503 	ida_free(&dax_region->ida, dev_dax->id);  in __free_dev_dax_id()
504 	dax_region_put(dax_region);  in __free_dev_dax_id()
523 	struct dax_region *dax_region = dev_dax->region;  in alloc_dev_dax_id()  local
526 	id = ida_alloc(&dax_region->ida, GFP_KERNEL);  in alloc_dev_dax_id()
529 	kref_get(&dax_region->kref);  in alloc_dev_dax_id()
538 	struct dax_region *dax_region = dev_get_drvdata(dev);  in delete_store()  local
544 	if (is_static(dax_region))  in delete_store()
547 	victim = device_find_child_by_name(dax_region->dev, buf);  in delete_store()
567 			if (dax_region->seed == victim)  in delete_store()
568 				dax_region->seed = NULL;  in delete_store()
569 			if (dax_region->youngest == victim)  in delete_store()
570 				dax_region->youngest = NULL;  in delete_store()
591 	struct dax_region *dax_region = dev_get_drvdata(dev);  in dax_region_visible()  local
593 	if (is_static(dax_region))  in dax_region_visible()
626 	struct dax_region *dax_region = region;  in dax_region_unregister()  local
628 	sysfs_remove_groups(&dax_region->dev->kobj,  in dax_region_unregister()
630 	dax_region_put(dax_region);  in dax_region_unregister()
633 struct dax_region *alloc_dax_region(struct device *parent, int region_id,  in alloc_dax_region()
637 	struct dax_region *dax_region;  in alloc_dax_region()  local
653 	dax_region = kzalloc(sizeof(*dax_region), GFP_KERNEL);  in alloc_dax_region()
654 	if (!dax_region)  in alloc_dax_region()
657 	dev_set_drvdata(parent, dax_region);  in alloc_dax_region()
658 	kref_init(&dax_region->kref);  in alloc_dax_region()
659 	dax_region->id = region_id;  in alloc_dax_region()
660 	dax_region->align = align;  in alloc_dax_region()
661 	dax_region->dev = parent;  in alloc_dax_region()
662 	dax_region->target_node = target_node;  in alloc_dax_region()
663 	ida_init(&dax_region->ida);  in alloc_dax_region()
664 	dax_region->res = (struct resource) {  in alloc_dax_region()
671 		kfree(dax_region);  in alloc_dax_region()
675 	if (devm_add_action_or_reset(parent, dax_region_unregister, dax_region))  in alloc_dax_region()
677 	return dax_region;  in alloc_dax_region()
799 	struct dax_region *dax_region = dev_dax->region;  in devm_register_dax_mapping()  local
806 	if (dev_WARN_ONCE(&dev_dax->dev, !dax_region->dev->driver,  in devm_register_dax_mapping()
832 	rc = devm_add_action_or_reset(dax_region->dev, unregister_dax_mapping,  in devm_register_dax_mapping()
842 	struct dax_region *dax_region = dev_dax->region;  in alloc_dev_dax_range()  local
843 	struct resource *res = &dax_region->res;  in alloc_dev_dax_range()
958 	struct dax_region *dax_region = dev_dax->region;  in dev_dax_shrink()  local
970 			devm_release_action(dax_region->dev,  in dev_dax_shrink()
979 		for_each_dax_region_resource(dax_region, res)  in dev_dax_shrink()
1021 static ssize_t dev_dax_resize(struct dax_region *dax_region,  in dev_dax_resize()  argument
1024 	resource_size_t avail = dax_region_avail_size(dax_region), to_alloc;  in dev_dax_resize()
1026 	struct resource *region_res = &dax_region->res;  in dev_dax_resize()
1054 		return alloc_dev_dax_range(dev_dax, dax_region->res.start, to_alloc);  in dev_dax_resize()
1061 		if (res == first && res->start > dax_region->res.start) {  in dev_dax_resize()
1062 			alloc = min(res->start - dax_region->res.start, to_alloc);  in dev_dax_resize()
1063 			rc = alloc_dev_dax_range(dev_dax, dax_region->res.start, alloc);  in dev_dax_resize()
1100 	struct dax_region *dax_region = dev_dax->region;  in size_store()  local
1114 	if (!dax_region->dev->driver) {  in size_store()
1122 	rc = dev_dax_resize(dax_region, dev_dax, val);  in size_store()
1169 	struct dax_region *dax_region = dev_dax->region;  in mapping_store()  local
1181 	if (!dax_region->dev->driver) {  in mapping_store()
1231 	struct dax_region *dax_region = dev_dax->region;  in align_store()  local
1245 	if (!dax_region->dev->driver) {  in align_store()
1274 	struct dax_region *dax_region = dev_dax->region;  in dev_dax_target_node()  local
1276 	return dax_region->target_node;  in dev_dax_target_node()
1292 	struct dax_region *dax_region = dev_dax->region;  in resource_show()  local
1296 		start = dax_region->res.start;  in resource_show()
1368 	struct dax_region *dax_region = dev_dax->region;  in dev_dax_visible()  local
1374 	if (a == &dev_attr_mapping.attr && is_static(dax_region))  in dev_dax_visible()
1377 	     a == &dev_attr_size.attr) && is_static(dax_region))  in dev_dax_visible()
1422 	struct dax_region *dax_region = data->dax_region;  in __devm_create_dev_dax()  local
1423 	struct device *parent = dax_region->dev;  in __devm_create_dev_dax()
1434 	dev_dax->region = dax_region;  in __devm_create_dev_dax()
1435 	if (is_static(dax_region)) {  in __devm_create_dev_dax()
1457 	dev_set_name(dev, "dax%d.%d", dax_region->id, dev_dax->id);  in __devm_create_dev_dax()
1459 	rc = alloc_dev_dax_range(dev_dax, dax_region->res.start, data->size);  in __devm_create_dev_dax()
1464 		dev_WARN_ONCE(parent, !is_static(dax_region),  in __devm_create_dev_dax()
1492 	dev_dax->target_node = dax_region->target_node;  in __devm_create_dev_dax()
1493 	dev_dax->align = dax_region->align;  in __devm_create_dev_dax()
1511 	rc = devm_add_action_or_reset(dax_region->dev, unregister_dev_dax, dev);  in __devm_create_dev_dax()