191 static const struct ieee1394_device_id *unit_match(struct device *dev,  in unit_match()
207 static bool is_fw_unit(const struct device *dev);
209 static int fw_unit_match(struct device *dev, const struct device_driver *drv)  in fw_unit_match()
215 static int fw_unit_probe(struct device *dev)  in fw_unit_probe()
223 static void fw_unit_remove(struct device *dev)  in fw_unit_remove()
242 static int fw_unit_uevent(const struct device *dev, struct kobj_uevent_env *env)  in fw_unit_uevent()
263 int fw_device_enable_phys_dma(struct fw_device *device)  in fw_device_enable_phys_dma()  argument
265 	int generation = device->generation;  in fw_device_enable_phys_dma()
270 	return device->card->driver->enable_phys_dma(device->card,  in fw_device_enable_phys_dma()
271 						     device->node_id,  in fw_device_enable_phys_dma()
281 static ssize_t show_immediate(struct device *dev,  in show_immediate()
329 static ssize_t show_text_leaf(struct device *dev,  in show_text_leaf()
408 static void init_fw_attribute_group(struct device *dev,  in init_fw_attribute_group()
432 static ssize_t modalias_show(struct device *dev,  in modalias_show()
444 static ssize_t rom_index_show(struct device *dev,  in rom_index_show()
447 	struct fw_device *device = fw_device(dev->parent);  in rom_index_show()  local
450 	return sysfs_emit(buf, "%td\n", unit->directory - device->config_rom);  in rom_index_show()
459 static ssize_t config_rom_show(struct device *dev,  in config_rom_show()
462 	struct fw_device *device = fw_device(dev);  in config_rom_show()  local
467 	length = device->config_rom_length * 4;  in config_rom_show()
468 	memcpy(buf, device->config_rom, length);  in config_rom_show()
473 static ssize_t guid_show(struct device *dev,  in guid_show()
476 	struct fw_device *device = fw_device(dev);  in guid_show()  local
480 	return sysfs_emit(buf, "0x%08x%08x\n", device->config_rom[3], device->config_rom[4]);  in guid_show()
483 static ssize_t is_local_show(struct device *dev,  in is_local_show()
486 	struct fw_device *device = fw_device(dev);  in is_local_show()  local
488 	return sysfs_emit(buf, "%u\n", device->is_local);  in is_local_show()
513 static ssize_t units_show(struct device *dev,  in units_show()
516 	struct fw_device *device = fw_device(dev);  in units_show()  local
522 	fw_csr_iterator_init(&ci, &device->config_rom[ROOT_DIR_OFFSET]);  in units_show()
621 static int read_rom(struct fw_device *device, int generation, int speed, int index, u32 *data)  in read_rom()  argument
630 		rcode = fw_run_transaction(device->card,  in read_rom()
631 				TCODE_READ_QUADLET_REQUEST, device->node_id,  in read_rom()
653 static int read_config_rom(struct fw_device *device, int generation)  in read_config_rom()  argument
655 	struct fw_card *card = device->card;  in read_config_rom()
674 		ret = read_rom(device, generation, speed, i, &rom[i]);  in read_config_rom()
692 	WRITE_ONCE(device->quirks, quirks);  in read_config_rom()
717 		ret = read_rom(device, generation, speed, i, &rom[i]);  in read_config_rom()
741 			ret = read_rom(device, generation, speed, i, &rom[i]);  in read_config_rom()
771 	WRITE_ONCE(device->quirks, quirks);  in read_config_rom()
776 		speed = device->node->max_speed;  in read_config_rom()
792 			if (read_rom(device, generation, speed, 0, &dummy) ==  in read_config_rom()
799 	device->max_speed = speed;  in read_config_rom()
801 	old_rom = device->config_rom;  in read_config_rom()
807 		device->config_rom = new_rom;  in read_config_rom()
808 		device->config_rom_length = length;  in read_config_rom()
811 	device->max_rec	= rom[2] >> 12 & 0xf;  in read_config_rom()
812 	device->cmc	= rom[2] >> 30 & 1;  in read_config_rom()
813 	device->irmc	= rom[2] >> 31 & 1;  in read_config_rom()
818 static void fw_unit_release(struct device *dev)  in fw_unit_release()
831 static bool is_fw_unit(const struct device *dev)  in is_fw_unit()
836 static void create_units(struct fw_device *device)  in create_units()  argument
843 	fw_csr_iterator_init(&ci, &device->config_rom[ROOT_DIR_OFFSET]);  in create_units()
857 		unit->device.bus = &fw_bus_type;  in create_units()
858 		unit->device.type = &fw_unit_type;  in create_units()
859 		unit->device.parent = &device->device;  in create_units()
860 		dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++);  in create_units()
865 		init_fw_attribute_group(&unit->device,  in create_units()
869 		fw_device_get(device);  in create_units()
870 		if (device_register(&unit->device) < 0) {  in create_units()
871 			put_device(&unit->device);  in create_units()
877 static int shutdown_unit(struct device *device, void *data)  in shutdown_unit()  argument
879 	device_unregister(device);  in shutdown_unit()
896 	struct fw_device *device;  in fw_device_get_by_devt()  local
898 	device = xa_load(&fw_device_xa, MINOR(devt));  in fw_device_get_by_devt()
899 	if (device)  in fw_device_get_by_devt()
900 		fw_device_get(device);  in fw_device_get_by_devt()
902 	return device;  in fw_device_get_by_devt()
908 static void fw_schedule_device_work(struct fw_device *device,  in fw_schedule_device_work()  argument
911 	queue_delayed_work(fw_workqueue, &device->work, delay);  in fw_schedule_device_work()
932 	struct fw_device *device = from_work(device, work, work.work);  in fw_device_shutdown()  local
934 	if (time_is_after_jiffies64(device->card->reset_jiffies + SHUTDOWN_DELAY)  in fw_device_shutdown()
935 	    && !list_empty(&device->card->link)) {  in fw_device_shutdown()
936 		fw_schedule_device_work(device, SHUTDOWN_DELAY);  in fw_device_shutdown()
940 	if (atomic_cmpxchg(&device->state,  in fw_device_shutdown()
945 	fw_device_cdev_remove(device);  in fw_device_shutdown()
946 	device_for_each_child(&device->device, NULL, shutdown_unit);  in fw_device_shutdown()
947 	device_unregister(&device->device);  in fw_device_shutdown()
949 	xa_erase(&fw_device_xa, MINOR(device->device.devt));  in fw_device_shutdown()
951 	fw_device_put(device);  in fw_device_shutdown()
954 static void fw_device_release(struct device *dev)  in fw_device_release()
956 	struct fw_device *device = fw_device(dev);  in fw_device_release()  local
957 	struct fw_card *card = device->card;  in fw_device_release()
965 		fw_node_set_device(device->node, NULL);  in fw_device_release()
967 	fw_node_put(device->node);  in fw_device_release()
968 	kfree(device->config_rom);  in fw_device_release()
969 	kfree(device);  in fw_device_release()
977 static bool is_fw_device(const struct device *dev)  in is_fw_device()
982 static int update_unit(struct device *dev, void *data)  in update_unit()
998 	struct fw_device *device = from_work(device, work, work.work);  in fw_device_update()  local
1000 	fw_device_cdev_update(device);  in fw_device_update()
1001 	device_for_each_child(&device->device, NULL, update_unit);  in fw_device_update()
1006 static void set_broadcast_channel(struct fw_device *device, int generation)  in set_broadcast_channel()  argument
1008 	struct fw_card *card = device->card;  in set_broadcast_channel()
1022 	if (!device->irmc || device->max_rec < 8)  in set_broadcast_channel()
1029 	if (device->bc_implemented == BC_UNKNOWN) {  in set_broadcast_channel()
1031 				device->node_id, generation, device->max_speed,  in set_broadcast_channel()
1037 				device->bc_implemented = BC_IMPLEMENTED;  in set_broadcast_channel()
1042 			device->bc_implemented = BC_UNIMPLEMENTED;  in set_broadcast_channel()
1046 	if (device->bc_implemented == BC_IMPLEMENTED) {  in set_broadcast_channel()
1050 				device->node_id, generation, device->max_speed,  in set_broadcast_channel()
1056 int fw_device_set_broadcast_channel(struct device *dev, void *gen)  in fw_device_set_broadcast_channel()
1064 static int compare_configuration_rom(struct device *dev, const void *data)  in compare_configuration_rom()
1078 	struct fw_device *device = from_work(device, work, work.work);  in fw_device_init()  local
1079 	struct fw_card *card = device->card;  in fw_device_init()
1080 	struct device *found;  in fw_device_init()
1090 	ret = read_config_rom(device, device->generation);  in fw_device_init()
1092 		if (device->config_rom_retries < MAX_RETRIES &&  in fw_device_init()
1093 		    atomic_read(&device->state) == FW_DEVICE_INITIALIZING) {  in fw_device_init()
1094 			device->config_rom_retries++;  in fw_device_init()
1095 			fw_schedule_device_work(device, RETRY_DELAY);  in fw_device_init()
1097 			if (device->node->link_on)  in fw_device_init()
1099 					  device->node_id,  in fw_device_init()
1101 			if (device->node == card->root_node)  in fw_device_init()
1103 			fw_device_release(&device->device);  in fw_device_init()
1114 		found = device_find_child(card->device, device->config_rom,  in fw_device_init()
1125 				struct fw_node *current_node = device->node;  in fw_device_init()
1128 				device->node = obsolete_node;  in fw_device_init()
1129 				fw_node_set_device(device->node, device);  in fw_device_init()
1133 				reused->max_speed = device->max_speed;  in fw_device_init()
1149 			fw_device_release(&device->device);  in fw_device_init()
1157 	device_initialize(&device->device);  in fw_device_init()
1159 	fw_device_get(device);  in fw_device_init()
1162 	ret = xa_alloc(&fw_device_xa, &minor, device, XA_LIMIT(0, MINORMASK), GFP_KERNEL);  in fw_device_init()
1166 	device->device.bus = &fw_bus_type;  in fw_device_init()
1167 	device->device.type = &fw_device_type;  in fw_device_init()
1168 	device->device.parent = card->device;  in fw_device_init()
1169 	device->device.devt = MKDEV(fw_cdev_major, minor);  in fw_device_init()
1170 	dev_set_name(&device->device, "fw%d", minor);  in fw_device_init()
1172 	BUILD_BUG_ON(ARRAY_SIZE(device->attribute_group.attrs) <  in fw_device_init()
1175 	init_fw_attribute_group(&device->device,  in fw_device_init()
1177 				&device->attribute_group);  in fw_device_init()
1179 	if (device_add(&device->device)) {  in fw_device_init()
1184 	create_units(device);  in fw_device_init()
1195 	if (atomic_cmpxchg(&device->state,  in fw_device_init()
1198 		device->workfn = fw_device_shutdown;  in fw_device_init()
1199 		fw_schedule_device_work(device, SHUTDOWN_DELAY);  in fw_device_init()
1202 			  dev_name(&device->device),  in fw_device_init()
1203 			  device->config_rom[3], device->config_rom[4],  in fw_device_init()
1204 			  1 << device->max_speed, device->quirks);  in fw_device_init()
1205 		device->config_rom_retries = 0;  in fw_device_init()
1207 		set_broadcast_channel(device, device->generation);  in fw_device_init()
1209 		add_device_randomness(&device->config_rom[3], 8);  in fw_device_init()
1218 	if (device->node == card->root_node)  in fw_device_init()
1226 	fw_device_put(device);		// fw_device_xa's reference.  in fw_device_init()
1228 	put_device(&device->device);	/* our reference */  in fw_device_init()
1232 static int reread_config_rom(struct fw_device *device, int generation,  in reread_config_rom()  argument
1239 		rcode = read_rom(device, generation, device->max_speed, i, &q);  in reread_config_rom()
1247 		if (q != device->config_rom[i]) {  in reread_config_rom()
1259 	struct fw_device *device = from_work(device, work, work.work);  in fw_device_refresh()  local
1260 	struct fw_card *card = device->card;  in fw_device_refresh()
1261 	int ret, node_id = device->node_id;  in fw_device_refresh()
1264 	ret = reread_config_rom(device, device->generation, &changed);  in fw_device_refresh()
1269 		if (atomic_cmpxchg(&device->state,  in fw_device_refresh()
1275 		device->config_rom_retries = 0;  in fw_device_refresh()
1283 	device_for_each_child(&device->device, NULL, shutdown_unit);  in fw_device_refresh()
1285 	ret = read_config_rom(device, device->generation);  in fw_device_refresh()
1289 	fw_device_cdev_update(device);  in fw_device_refresh()
1290 	create_units(device);  in fw_device_refresh()
1293 	kobject_uevent(&device->device.kobj, KOBJ_CHANGE);  in fw_device_refresh()
1295 	if (atomic_cmpxchg(&device->state,  in fw_device_refresh()
1300 	fw_notice(card, "refreshed device %s\n", dev_name(&device->device));  in fw_device_refresh()
1301 	device->config_rom_retries = 0;  in fw_device_refresh()
1305 	if (device->config_rom_retries < MAX_RETRIES &&  in fw_device_refresh()
1306 	    atomic_read(&device->state) == FW_DEVICE_INITIALIZING) {  in fw_device_refresh()
1307 		device->config_rom_retries++;  in fw_device_refresh()
1308 		fw_schedule_device_work(device, RETRY_DELAY);  in fw_device_refresh()
1313 		  dev_name(&device->device), fw_rcode_string(ret));  in fw_device_refresh()
1315 	atomic_set(&device->state, FW_DEVICE_GONE);  in fw_device_refresh()
1316 	device->workfn = fw_device_shutdown;  in fw_device_refresh()
1317 	fw_schedule_device_work(device, SHUTDOWN_DELAY);  in fw_device_refresh()
1325 	struct fw_device *device = from_work(device, to_delayed_work(work), work);  in fw_device_workfn()  local
1326 	device->workfn(work);  in fw_device_workfn()
1331 	struct fw_device *device;  in fw_node_event()  local
1342 		device = kzalloc_obj(*device, GFP_ATOMIC);  in fw_node_event()
1343 		if (device == NULL)  in fw_node_event()
1356 		atomic_set(&device->state, FW_DEVICE_INITIALIZING);  in fw_node_event()
1357 		device->card = fw_card_get(card);  in fw_node_event()
1358 		device->node = fw_node_get(node);  in fw_node_event()
1359 		device->node_id = node->node_id;  in fw_node_event()
1360 		device->generation = card->generation;  in fw_node_event()
1361 		device->is_local = node == card->local_node;  in fw_node_event()
1362 		mutex_init(&device->client_list_mutex);  in fw_node_event()
1363 		INIT_LIST_HEAD(&device->client_list);  in fw_node_event()
1370 		fw_node_set_device(node, device);  in fw_node_event()
1378 		device->workfn = fw_device_init;  in fw_node_event()
1379 		INIT_DELAYED_WORK(&device->work, fw_device_workfn);  in fw_node_event()
1380 		fw_schedule_device_work(device, INITIAL_DELAY);  in fw_node_event()
1385 		device = fw_node_get_device(node);  in fw_node_event()
1386 		if (device == NULL)  in fw_node_event()
1389 		device->node_id = node->node_id;  in fw_node_event()
1391 		device->generation = card->generation;  in fw_node_event()
1392 		if (atomic_cmpxchg(&device->state,  in fw_node_event()
1395 			device->workfn = fw_device_refresh;  in fw_node_event()
1396 			fw_schedule_device_work(device,  in fw_node_event()
1397 				device->is_local ? 0 : INITIAL_DELAY);  in fw_node_event()
1402 		device = fw_node_get_device(node);  in fw_node_event()
1403 		if (device == NULL)  in fw_node_event()
1406 		device->node_id = node->node_id;  in fw_node_event()
1408 		device->generation = card->generation;  in fw_node_event()
1409 		if (atomic_read(&device->state) == FW_DEVICE_RUNNING) {  in fw_node_event()
1410 			device->workfn = fw_device_update;  in fw_node_event()
1411 			fw_schedule_device_work(device, 0);  in fw_node_event()
1432 		device = fw_node_get_device(node);  in fw_node_event()
1433 		if (atomic_xchg(&device->state,  in fw_node_event()
1435 			device->workfn = fw_device_shutdown;  in fw_node_event()
1436 			fw_schedule_device_work(device,  in fw_node_event()