171 static const struct ieee1394_device_id *unit_match(struct device *dev,  in unit_match()
187 static bool is_fw_unit(struct device *dev);
189 static int fw_unit_match(struct device *dev, struct device_driver *drv)  in fw_unit_match()
195 static int fw_unit_probe(struct device *dev)  in fw_unit_probe()
203 static int fw_unit_remove(struct device *dev)  in fw_unit_remove()
222 static int fw_unit_uevent(struct device *dev, struct kobj_uevent_env *env)  in fw_unit_uevent()
243 int fw_device_enable_phys_dma(struct fw_device *device)  in fw_device_enable_phys_dma()  argument
245 	int generation = device->generation;  in fw_device_enable_phys_dma()
250 	return device->card->driver->enable_phys_dma(device->card,  in fw_device_enable_phys_dma()
251 						     device->node_id,  in fw_device_enable_phys_dma()
261 static ssize_t show_immediate(struct device *dev,  in show_immediate()
293 static ssize_t show_text_leaf(struct device *dev,  in show_text_leaf()
346 static void init_fw_attribute_group(struct device *dev,  in init_fw_attribute_group()
370 static ssize_t modalias_show(struct device *dev,  in modalias_show()
382 static ssize_t rom_index_show(struct device *dev,  in rom_index_show()
385 	struct fw_device *device = fw_device(dev->parent);  in rom_index_show()  local
389 			(int)(unit->directory - device->config_rom));  in rom_index_show()
398 static ssize_t config_rom_show(struct device *dev,  in config_rom_show()
401 	struct fw_device *device = fw_device(dev);  in config_rom_show()  local
405 	length = device->config_rom_length * 4;  in config_rom_show()
406 	memcpy(buf, device->config_rom, length);  in config_rom_show()
412 static ssize_t guid_show(struct device *dev,  in guid_show()
415 	struct fw_device *device = fw_device(dev);  in guid_show()  local
420 		       device->config_rom[3], device->config_rom[4]);  in guid_show()
426 static ssize_t is_local_show(struct device *dev,  in is_local_show()
429 	struct fw_device *device = fw_device(dev);  in is_local_show()  local
431 	return sprintf(buf, "%u\n", device->is_local);  in is_local_show()
456 static ssize_t units_show(struct device *dev,  in units_show()
459 	struct fw_device *device = fw_device(dev);  in units_show()  local
464 	fw_csr_iterator_init(&ci, &device->config_rom[5]);  in units_show()
488 static int read_rom(struct fw_device *device,  in read_rom()  argument
498 		rcode = fw_run_transaction(device->card,  in read_rom()
499 				TCODE_READ_QUADLET_REQUEST, device->node_id,  in read_rom()
500 				generation, device->max_speed, offset, data, 4);  in read_rom()
520 static int read_config_rom(struct fw_device *device, int generation)  in read_config_rom()  argument
522 	struct fw_card *card = device->card;  in read_config_rom()
536 	device->max_speed = SCODE_100;  in read_config_rom()
540 		ret = read_rom(device, generation, i, &rom[i]);  in read_config_rom()
557 	device->max_speed = device->node->max_speed;  in read_config_rom()
568 	if ((rom[2] & 0x7) < device->max_speed ||  in read_config_rom()
569 	    device->max_speed == SCODE_BETA ||  in read_config_rom()
574 		if (device->max_speed == SCODE_BETA)  in read_config_rom()
575 			device->max_speed = card->link_speed;  in read_config_rom()
577 		while (device->max_speed > SCODE_100) {  in read_config_rom()
578 			if (read_rom(device, generation, 0, &dummy) ==  in read_config_rom()
581 			device->max_speed--;  in read_config_rom()
610 		ret = read_rom(device, generation, i, &rom[i]);  in read_config_rom()
634 			ret = read_rom(device, generation, i, &rom[i]);  in read_config_rom()
661 	old_rom = device->config_rom;  in read_config_rom()
669 	device->config_rom = new_rom;  in read_config_rom()
670 	device->config_rom_length = length;  in read_config_rom()
675 	device->max_rec	= rom[2] >> 12 & 0xf;  in read_config_rom()
676 	device->cmc	= rom[2] >> 30 & 1;  in read_config_rom()
677 	device->irmc	= rom[2] >> 31 & 1;  in read_config_rom()
684 static void fw_unit_release(struct device *dev)  in fw_unit_release()
697 static bool is_fw_unit(struct device *dev)  in is_fw_unit()
702 static void create_units(struct fw_device *device)  in create_units()  argument
709 	fw_csr_iterator_init(&ci, &device->config_rom[5]);  in create_units()
723 		unit->device.bus = &fw_bus_type;  in create_units()
724 		unit->device.type = &fw_unit_type;  in create_units()
725 		unit->device.parent = &device->device;  in create_units()
726 		dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++);  in create_units()
731 		init_fw_attribute_group(&unit->device,  in create_units()
735 		if (device_register(&unit->device) < 0)  in create_units()
738 		fw_device_get(device);  in create_units()
746 static int shutdown_unit(struct device *device, void *data)  in shutdown_unit()  argument
748 	device_unregister(device);  in shutdown_unit()
766 	struct fw_device *device;  in fw_device_get_by_devt()  local
769 	device = idr_find(&fw_device_idr, MINOR(devt));  in fw_device_get_by_devt()
770 	if (device)  in fw_device_get_by_devt()
771 		fw_device_get(device);  in fw_device_get_by_devt()
774 	return device;  in fw_device_get_by_devt()
780 static void fw_schedule_device_work(struct fw_device *device,  in fw_schedule_device_work()  argument
783 	queue_delayed_work(fw_workqueue, &device->work, delay);  in fw_schedule_device_work()
804 	struct fw_device *device =  in fw_device_shutdown()  local
806 	int minor = MINOR(device->device.devt);  in fw_device_shutdown()
809 			  device->card->reset_jiffies + SHUTDOWN_DELAY)  in fw_device_shutdown()
810 	    && !list_empty(&device->card->link)) {  in fw_device_shutdown()
811 		fw_schedule_device_work(device, SHUTDOWN_DELAY);  in fw_device_shutdown()
815 	if (atomic_cmpxchg(&device->state,  in fw_device_shutdown()
820 	fw_device_cdev_remove(device);  in fw_device_shutdown()
821 	device_for_each_child(&device->device, NULL, shutdown_unit);  in fw_device_shutdown()
822 	device_unregister(&device->device);  in fw_device_shutdown()
828 	fw_device_put(device);  in fw_device_shutdown()
831 static void fw_device_release(struct device *dev)  in fw_device_release()
833 	struct fw_device *device = fw_device(dev);  in fw_device_release()  local
834 	struct fw_card *card = device->card;  in fw_device_release()
843 	device->node->data = NULL;  in fw_device_release()
846 	fw_node_put(device->node);  in fw_device_release()
847 	kfree(device->config_rom);  in fw_device_release()
848 	kfree(device);  in fw_device_release()
856 static bool is_fw_device(struct device *dev)  in is_fw_device()
861 static int update_unit(struct device *dev, void *data)  in update_unit()
877 	struct fw_device *device =  in fw_device_update()  local
880 	fw_device_cdev_update(device);  in fw_device_update()
881 	device_for_each_child(&device->device, NULL, update_unit);  in fw_device_update()
890 static int lookup_existing_device(struct device *dev, void *data)  in lookup_existing_device()
939 static void set_broadcast_channel(struct fw_device *device, int generation)  in set_broadcast_channel()  argument
941 	struct fw_card *card = device->card;  in set_broadcast_channel()
955 	if (!device->irmc || device->max_rec < 8)  in set_broadcast_channel()
962 	if (device->bc_implemented == BC_UNKNOWN) {  in set_broadcast_channel()
964 				device->node_id, generation, device->max_speed,  in set_broadcast_channel()
970 				device->bc_implemented = BC_IMPLEMENTED;  in set_broadcast_channel()
975 			device->bc_implemented = BC_UNIMPLEMENTED;  in set_broadcast_channel()
979 	if (device->bc_implemented == BC_IMPLEMENTED) {  in set_broadcast_channel()
983 				device->node_id, generation, device->max_speed,  in set_broadcast_channel()
989 int fw_device_set_broadcast_channel(struct device *dev, void *gen)  in fw_device_set_broadcast_channel()
999 	struct fw_device *device =  in fw_device_init()  local
1001 	struct fw_card *card = device->card;  in fw_device_init()
1002 	struct device *revived_dev;  in fw_device_init()
1011 	ret = read_config_rom(device, device->generation);  in fw_device_init()
1013 		if (device->config_rom_retries < MAX_RETRIES &&  in fw_device_init()
1014 		    atomic_read(&device->state) == FW_DEVICE_INITIALIZING) {  in fw_device_init()
1015 			device->config_rom_retries++;  in fw_device_init()
1016 			fw_schedule_device_work(device, RETRY_DELAY);  in fw_device_init()
1018 			if (device->node->link_on)  in fw_device_init()
1020 					  device->node_id,  in fw_device_init()
1022 			if (device->node == card->root_node)  in fw_device_init()
1024 			fw_device_release(&device->device);  in fw_device_init()
1029 	revived_dev = device_find_child(card->device,  in fw_device_init()
1030 					device, lookup_existing_device);  in fw_device_init()
1033 		fw_device_release(&device->device);  in fw_device_init()
1038 	device_initialize(&device->device);  in fw_device_init()
1040 	fw_device_get(device);  in fw_device_init()
1042 	minor = idr_alloc(&fw_device_idr, device, 0, 1 << MINORBITS,  in fw_device_init()
1049 	device->device.bus = &fw_bus_type;  in fw_device_init()
1050 	device->device.type = &fw_device_type;  in fw_device_init()
1051 	device->device.parent = card->device;  in fw_device_init()
1052 	device->device.devt = MKDEV(fw_cdev_major, minor);  in fw_device_init()
1053 	dev_set_name(&device->device, "fw%d", minor);  in fw_device_init()
1055 	BUILD_BUG_ON(ARRAY_SIZE(device->attribute_group.attrs) <  in fw_device_init()
1058 	init_fw_attribute_group(&device->device,  in fw_device_init()
1060 				&device->attribute_group);  in fw_device_init()
1062 	if (device_add(&device->device)) {  in fw_device_init()
1067 	create_units(device);  in fw_device_init()
1078 	if (atomic_cmpxchg(&device->state,  in fw_device_init()
1081 		device->workfn = fw_device_shutdown;  in fw_device_init()
1082 		fw_schedule_device_work(device, SHUTDOWN_DELAY);  in fw_device_init()
1085 			  dev_name(&device->device),  in fw_device_init()
1086 			  device->config_rom[3], device->config_rom[4],  in fw_device_init()
1087 			  1 << device->max_speed);  in fw_device_init()
1088 		device->config_rom_retries = 0;  in fw_device_init()
1090 		set_broadcast_channel(device, device->generation);  in fw_device_init()
1092 		add_device_randomness(&device->config_rom[3], 8);  in fw_device_init()
1101 	if (device->node == card->root_node)  in fw_device_init()
1111 	fw_device_put(device);		/* fw_device_idr's reference */  in fw_device_init()
1113 	put_device(&device->device);	/* our reference */  in fw_device_init()
1117 static int reread_config_rom(struct fw_device *device, int generation,  in reread_config_rom()  argument
1124 		rcode = read_rom(device, generation, i, &q);  in reread_config_rom()
1132 		if (q != device->config_rom[i]) {  in reread_config_rom()
1144 	struct fw_device *device =  in fw_device_refresh()  local
1146 	struct fw_card *card = device->card;  in fw_device_refresh()
1147 	int ret, node_id = device->node_id;  in fw_device_refresh()
1150 	ret = reread_config_rom(device, device->generation, &changed);  in fw_device_refresh()
1155 		if (atomic_cmpxchg(&device->state,  in fw_device_refresh()
1161 		device->config_rom_retries = 0;  in fw_device_refresh()
1169 	device_for_each_child(&device->device, NULL, shutdown_unit);  in fw_device_refresh()
1171 	ret = read_config_rom(device, device->generation);  in fw_device_refresh()
1175 	fw_device_cdev_update(device);  in fw_device_refresh()
1176 	create_units(device);  in fw_device_refresh()
1179 	kobject_uevent(&device->device.kobj, KOBJ_CHANGE);  in fw_device_refresh()
1181 	if (atomic_cmpxchg(&device->state,  in fw_device_refresh()
1186 	fw_notice(card, "refreshed device %s\n", dev_name(&device->device));  in fw_device_refresh()
1187 	device->config_rom_retries = 0;  in fw_device_refresh()
1191 	if (device->config_rom_retries < MAX_RETRIES &&  in fw_device_refresh()
1192 	    atomic_read(&device->state) == FW_DEVICE_INITIALIZING) {  in fw_device_refresh()
1193 		device->config_rom_retries++;  in fw_device_refresh()
1194 		fw_schedule_device_work(device, RETRY_DELAY);  in fw_device_refresh()
1199 		  dev_name(&device->device), fw_rcode_string(ret));  in fw_device_refresh()
1201 	atomic_set(&device->state, FW_DEVICE_GONE);  in fw_device_refresh()
1202 	device->workfn = fw_device_shutdown;  in fw_device_refresh()
1203 	fw_schedule_device_work(device, SHUTDOWN_DELAY);  in fw_device_refresh()
1211 	struct fw_device *device = container_of(to_delayed_work(work),  in fw_device_workfn()  local
1213 	device->workfn(work);  in fw_device_workfn()
1218 	struct fw_device *device;  in fw_node_event()  local
1229 		device = kzalloc(sizeof(*device), GFP_ATOMIC);  in fw_node_event()
1230 		if (device == NULL)  in fw_node_event()
1243 		atomic_set(&device->state, FW_DEVICE_INITIALIZING);  in fw_node_event()
1244 		device->card = fw_card_get(card);  in fw_node_event()
1245 		device->node = fw_node_get(node);  in fw_node_event()
1246 		device->node_id = node->node_id;  in fw_node_event()
1247 		device->generation = card->generation;  in fw_node_event()
1248 		device->is_local = node == card->local_node;  in fw_node_event()
1249 		mutex_init(&device->client_list_mutex);  in fw_node_event()
1250 		INIT_LIST_HEAD(&device->client_list);  in fw_node_event()
1257 		node->data = device;  in fw_node_event()
1265 		device->workfn = fw_device_init;  in fw_node_event()
1266 		INIT_DELAYED_WORK(&device->work, fw_device_workfn);  in fw_node_event()
1267 		fw_schedule_device_work(device, INITIAL_DELAY);  in fw_node_event()
1272 		device = node->data;  in fw_node_event()
1273 		if (device == NULL)  in fw_node_event()
1276 		device->node_id = node->node_id;  in fw_node_event()
1278 		device->generation = card->generation;  in fw_node_event()
1279 		if (atomic_cmpxchg(&device->state,  in fw_node_event()
1282 			device->workfn = fw_device_refresh;  in fw_node_event()
1283 			fw_schedule_device_work(device,  in fw_node_event()
1284 				device->is_local ? 0 : INITIAL_DELAY);  in fw_node_event()
1289 		device = node->data;  in fw_node_event()
1290 		if (device == NULL)  in fw_node_event()
1293 		device->node_id = node->node_id;  in fw_node_event()
1295 		device->generation = card->generation;  in fw_node_event()
1296 		if (atomic_read(&device->state) == FW_DEVICE_RUNNING) {  in fw_node_event()
1297 			device->workfn = fw_device_update;  in fw_node_event()
1298 			fw_schedule_device_work(device, 0);  in fw_node_event()
1319 		device = node->data;  in fw_node_event()
1320 		if (atomic_xchg(&device->state,  in fw_node_event()
1322 			device->workfn = fw_device_shutdown;  in fw_node_event()
1323 			fw_schedule_device_work(device,  in fw_node_event()