Lines Matching full:device
3 * Device probing and sysfs code.
11 #include <linux/device.h>
157 static const struct ieee1394_device_id *unit_match(struct device *dev, in unit_match()
173 static bool is_fw_unit(struct device *dev);
175 static int fw_unit_match(struct device *dev, struct device_driver *drv) in fw_unit_match()
181 static int fw_unit_probe(struct device *dev) in fw_unit_probe()
189 static void fw_unit_remove(struct device *dev) in fw_unit_remove()
208 static int fw_unit_uevent(const struct device *dev, struct kobj_uevent_env *env) in fw_unit_uevent()
229 int fw_device_enable_phys_dma(struct fw_device *device) in fw_device_enable_phys_dma() argument
231 int generation = device->generation; in fw_device_enable_phys_dma()
233 /* device->node_id, accessed below, must not be older than generation */ in fw_device_enable_phys_dma()
236 return device->card->driver->enable_phys_dma(device->card, in fw_device_enable_phys_dma()
237 device->node_id, in fw_device_enable_phys_dma()
247 static ssize_t show_immediate(struct device *dev, in show_immediate()
279 static ssize_t show_text_leaf(struct device *dev, in show_text_leaf()
332 static void init_fw_attribute_group(struct device *dev, in init_fw_attribute_group()
356 static ssize_t modalias_show(struct device *dev, in modalias_show()
368 static ssize_t rom_index_show(struct device *dev, in rom_index_show()
371 struct fw_device *device = fw_device(dev->parent); in rom_index_show() local
374 return sysfs_emit(buf, "%td\n", unit->directory - device->config_rom); in rom_index_show()
383 static ssize_t config_rom_show(struct device *dev, in config_rom_show()
386 struct fw_device *device = fw_device(dev); in config_rom_show() local
390 length = device->config_rom_length * 4; in config_rom_show()
391 memcpy(buf, device->config_rom, length); in config_rom_show()
397 static ssize_t guid_show(struct device *dev, in guid_show()
400 struct fw_device *device = fw_device(dev); in guid_show() local
404 ret = sysfs_emit(buf, "0x%08x%08x\n", device->config_rom[3], device->config_rom[4]); in guid_show()
410 static ssize_t is_local_show(struct device *dev, in is_local_show()
413 struct fw_device *device = fw_device(dev); in is_local_show() local
415 return sprintf(buf, "%u\n", device->is_local); in is_local_show()
440 static ssize_t units_show(struct device *dev, in units_show()
443 struct fw_device *device = fw_device(dev); in units_show() local
448 fw_csr_iterator_init(&ci, &device->config_rom[5]); in units_show()
472 static int read_rom(struct fw_device *device, in read_rom() argument
478 /* device->node_id, accessed below, must not be older than generation */ in read_rom()
482 rcode = fw_run_transaction(device->card, in read_rom()
483 TCODE_READ_QUADLET_REQUEST, device->node_id, in read_rom()
484 generation, device->max_speed, offset, data, 4); in read_rom()
504 static int read_config_rom(struct fw_device *device, int generation) in read_config_rom() argument
506 struct fw_card *card = device->card; in read_config_rom()
520 device->max_speed = SCODE_100; in read_config_rom()
524 ret = read_rom(device, generation, i, &rom[i]); in read_config_rom()
541 device->max_speed = device->node->max_speed; in read_config_rom()
552 if ((rom[2] & 0x7) < device->max_speed || in read_config_rom()
553 device->max_speed == SCODE_BETA || in read_config_rom()
558 if (device->max_speed == SCODE_BETA) in read_config_rom()
559 device->max_speed = card->link_speed; in read_config_rom()
561 while (device->max_speed > SCODE_100) { in read_config_rom()
562 if (read_rom(device, generation, 0, &dummy) == in read_config_rom()
565 device->max_speed--; in read_config_rom()
594 ret = read_rom(device, generation, i, &rom[i]); in read_config_rom()
618 ret = read_rom(device, generation, i, &rom[i]); in read_config_rom()
645 old_rom = device->config_rom; in read_config_rom()
653 device->config_rom = new_rom; in read_config_rom()
654 device->config_rom_length = length; in read_config_rom()
659 device->max_rec = rom[2] >> 12 & 0xf; in read_config_rom()
660 device->cmc = rom[2] >> 30 & 1; in read_config_rom()
661 device->irmc = rom[2] >> 31 & 1; in read_config_rom()
668 static void fw_unit_release(struct device *dev) in fw_unit_release()
681 static bool is_fw_unit(struct device *dev) in is_fw_unit()
686 static void create_units(struct fw_device *device) in create_units() argument
693 fw_csr_iterator_init(&ci, &device->config_rom[5]); in create_units()
707 unit->device.bus = &fw_bus_type; in create_units()
708 unit->device.type = &fw_unit_type; in create_units()
709 unit->device.parent = &device->device; in create_units()
710 dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++); in create_units()
715 init_fw_attribute_group(&unit->device, in create_units()
719 fw_device_get(device); in create_units()
720 if (device_register(&unit->device) < 0) { in create_units()
721 put_device(&unit->device); in create_units()
727 static int shutdown_unit(struct device *device, void *data) in shutdown_unit() argument
729 device_unregister(device); in shutdown_unit()
747 struct fw_device *device; in fw_device_get_by_devt() local
750 device = idr_find(&fw_device_idr, MINOR(devt)); in fw_device_get_by_devt()
751 if (device) in fw_device_get_by_devt()
752 fw_device_get(device); in fw_device_get_by_devt()
755 return device; in fw_device_get_by_devt()
761 static void fw_schedule_device_work(struct fw_device *device, in fw_schedule_device_work() argument
764 queue_delayed_work(fw_workqueue, &device->work, delay); in fw_schedule_device_work()
769 * rom. It shouldn't be necessary to tweak these; if the device
785 struct fw_device *device = in fw_device_shutdown() local
787 int minor = MINOR(device->device.devt); in fw_device_shutdown()
790 device->card->reset_jiffies + SHUTDOWN_DELAY) in fw_device_shutdown()
791 && !list_empty(&device->card->link)) { in fw_device_shutdown()
792 fw_schedule_device_work(device, SHUTDOWN_DELAY); in fw_device_shutdown()
796 if (atomic_cmpxchg(&device->state, in fw_device_shutdown()
801 fw_device_cdev_remove(device); in fw_device_shutdown()
802 device_for_each_child(&device->device, NULL, shutdown_unit); in fw_device_shutdown()
803 device_unregister(&device->device); in fw_device_shutdown()
809 fw_device_put(device); in fw_device_shutdown()
812 static void fw_device_release(struct device *dev) in fw_device_release()
814 struct fw_device *device = fw_device(dev); in fw_device_release() local
815 struct fw_card *card = device->card; in fw_device_release()
824 device->node->data = NULL; in fw_device_release()
827 fw_node_put(device->node); in fw_device_release()
828 kfree(device->config_rom); in fw_device_release()
829 kfree(device); in fw_device_release()
837 static bool is_fw_device(struct device *dev) in is_fw_device()
842 static int update_unit(struct device *dev, void *data) in update_unit()
858 struct fw_device *device = in fw_device_update() local
861 fw_device_cdev_update(device); in fw_device_update()
862 device_for_each_child(&device->device, NULL, update_unit); in fw_device_update()
866 * If a device was pending for deletion because its node went away but its
868 * device, revive the existing fw_device.
871 static int lookup_existing_device(struct device *dev, void *data) in lookup_existing_device()
901 fw_notice(card, "rediscovered device %s\n", dev_name(dev)); in lookup_existing_device()
920 static void set_broadcast_channel(struct fw_device *device, int generation) in set_broadcast_channel() argument
922 struct fw_card *card = device->card; in set_broadcast_channel()
936 if (!device->irmc || device->max_rec < 8) in set_broadcast_channel()
943 if (device->bc_implemented == BC_UNKNOWN) { in set_broadcast_channel()
945 device->node_id, generation, device->max_speed, in set_broadcast_channel()
951 device->bc_implemented = BC_IMPLEMENTED; in set_broadcast_channel()
956 device->bc_implemented = BC_UNIMPLEMENTED; in set_broadcast_channel()
960 if (device->bc_implemented == BC_IMPLEMENTED) { in set_broadcast_channel()
964 device->node_id, generation, device->max_speed, in set_broadcast_channel()
970 int fw_device_set_broadcast_channel(struct device *dev, void *gen) in fw_device_set_broadcast_channel()
980 struct fw_device *device = in fw_device_init() local
982 struct fw_card *card = device->card; in fw_device_init()
983 struct device *revived_dev; in fw_device_init()
989 * device. in fw_device_init()
992 ret = read_config_rom(device, device->generation); in fw_device_init()
994 if (device->config_rom_retries < MAX_RETRIES && in fw_device_init()
995 atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { in fw_device_init()
996 device->config_rom_retries++; in fw_device_init()
997 fw_schedule_device_work(device, RETRY_DELAY); in fw_device_init()
999 if (device->node->link_on) in fw_device_init()
1001 device->node_id, in fw_device_init()
1003 if (device->node == card->root_node) in fw_device_init()
1005 fw_device_release(&device->device); in fw_device_init()
1010 revived_dev = device_find_child(card->device, in fw_device_init()
1011 device, lookup_existing_device); in fw_device_init()
1014 fw_device_release(&device->device); in fw_device_init()
1019 device_initialize(&device->device); in fw_device_init()
1021 fw_device_get(device); in fw_device_init()
1023 minor = idr_alloc(&fw_device_idr, device, 0, 1 << MINORBITS, in fw_device_init()
1030 device->device.bus = &fw_bus_type; in fw_device_init()
1031 device->device.type = &fw_device_type; in fw_device_init()
1032 device->device.parent = card->device; in fw_device_init()
1033 device->device.devt = MKDEV(fw_cdev_major, minor); in fw_device_init()
1034 dev_set_name(&device->device, "fw%d", minor); in fw_device_init()
1036 BUILD_BUG_ON(ARRAY_SIZE(device->attribute_group.attrs) < in fw_device_init()
1039 init_fw_attribute_group(&device->device, in fw_device_init()
1041 &device->attribute_group); in fw_device_init()
1043 if (device_add(&device->device)) { in fw_device_init()
1044 fw_err(card, "failed to add device\n"); in fw_device_init()
1048 create_units(device); in fw_device_init()
1051 * Transition the device to running state. If it got pulled in fw_device_init()
1053 * have to shut down the device again here. Normally, though, in fw_device_init()
1059 if (atomic_cmpxchg(&device->state, in fw_device_init()
1062 device->workfn = fw_device_shutdown; in fw_device_init()
1063 fw_schedule_device_work(device, SHUTDOWN_DELAY); in fw_device_init()
1065 fw_notice(card, "created device %s: GUID %08x%08x, S%d00\n", in fw_device_init()
1066 dev_name(&device->device), in fw_device_init()
1067 device->config_rom[3], device->config_rom[4], in fw_device_init()
1068 1 << device->max_speed); in fw_device_init()
1069 device->config_rom_retries = 0; in fw_device_init()
1071 set_broadcast_channel(device, device->generation); in fw_device_init()
1073 add_device_randomness(&device->config_rom[3], 8); in fw_device_init()
1082 if (device->node == card->root_node) in fw_device_init()
1092 fw_device_put(device); /* fw_device_idr's reference */ in fw_device_init()
1094 put_device(&device->device); /* our reference */ in fw_device_init()
1098 static int reread_config_rom(struct fw_device *device, int generation, in reread_config_rom() argument
1105 rcode = read_rom(device, generation, i, &q); in reread_config_rom()
1113 if (q != device->config_rom[i]) { in reread_config_rom()
1125 struct fw_device *device = in fw_device_refresh() local
1127 struct fw_card *card = device->card; in fw_device_refresh()
1128 int ret, node_id = device->node_id; in fw_device_refresh()
1131 ret = reread_config_rom(device, device->generation, &changed); in fw_device_refresh()
1136 if (atomic_cmpxchg(&device->state, in fw_device_refresh()
1142 device->config_rom_retries = 0; in fw_device_refresh()
1150 device_for_each_child(&device->device, NULL, shutdown_unit); in fw_device_refresh()
1152 ret = read_config_rom(device, device->generation); in fw_device_refresh()
1156 fw_device_cdev_update(device); in fw_device_refresh()
1157 create_units(device); in fw_device_refresh()
1160 kobject_uevent(&device->device.kobj, KOBJ_CHANGE); in fw_device_refresh()
1162 if (atomic_cmpxchg(&device->state, in fw_device_refresh()
1167 fw_notice(card, "refreshed device %s\n", dev_name(&device->device)); in fw_device_refresh()
1168 device->config_rom_retries = 0; in fw_device_refresh()
1172 if (device->config_rom_retries < MAX_RETRIES && in fw_device_refresh()
1173 atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { in fw_device_refresh()
1174 device->config_rom_retries++; in fw_device_refresh()
1175 fw_schedule_device_work(device, RETRY_DELAY); in fw_device_refresh()
1179 fw_notice(card, "giving up on refresh of device %s: %s\n", in fw_device_refresh()
1180 dev_name(&device->device), fw_rcode_string(ret)); in fw_device_refresh()
1182 atomic_set(&device->state, FW_DEVICE_GONE); in fw_device_refresh()
1183 device->workfn = fw_device_shutdown; in fw_device_refresh()
1184 fw_schedule_device_work(device, SHUTDOWN_DELAY); in fw_device_refresh()
1192 struct fw_device *device = container_of(to_delayed_work(work), in fw_device_workfn() local
1194 device->workfn(work); in fw_device_workfn()
1199 struct fw_device *device; in fw_node_event() local
1210 device = kzalloc(sizeof(*device), GFP_ATOMIC); in fw_node_event()
1211 if (device == NULL) in fw_node_event()
1215 * Do minimal initialization of the device here, the in fw_node_event()
1220 * You can basically just check device->state and in fw_node_event()
1224 atomic_set(&device->state, FW_DEVICE_INITIALIZING); in fw_node_event()
1225 device->card = fw_card_get(card); in fw_node_event()
1226 device->node = fw_node_get(node); in fw_node_event()
1227 device->node_id = node->node_id; in fw_node_event()
1228 device->generation = card->generation; in fw_node_event()
1229 device->is_local = node == card->local_node; in fw_node_event()
1230 mutex_init(&device->client_list_mutex); in fw_node_event()
1231 INIT_LIST_HEAD(&device->client_list); in fw_node_event()
1234 * Set the node data to point back to this device so in fw_node_event()
1236 * and generation for the device. in fw_node_event()
1238 node->data = device; in fw_node_event()
1246 device->workfn = fw_device_init; in fw_node_event()
1247 INIT_DELAYED_WORK(&device->work, fw_device_workfn); in fw_node_event()
1248 fw_schedule_device_work(device, INITIAL_DELAY); in fw_node_event()
1253 device = node->data; in fw_node_event()
1254 if (device == NULL) in fw_node_event()
1257 device->node_id = node->node_id; in fw_node_event()
1259 device->generation = card->generation; in fw_node_event()
1260 if (atomic_cmpxchg(&device->state, in fw_node_event()
1263 device->workfn = fw_device_refresh; in fw_node_event()
1264 fw_schedule_device_work(device, in fw_node_event()
1265 device->is_local ? 0 : INITIAL_DELAY); in fw_node_event()
1270 device = node->data; in fw_node_event()
1271 if (device == NULL) in fw_node_event()
1274 device->node_id = node->node_id; in fw_node_event()
1276 device->generation = card->generation; in fw_node_event()
1277 if (atomic_read(&device->state) == FW_DEVICE_RUNNING) { in fw_node_event()
1278 device->workfn = fw_device_update; in fw_node_event()
1279 fw_schedule_device_work(device, 0); in fw_node_event()
1289 * Destroy the device associated with the node. There in fw_node_event()
1290 * are two cases here: either the device is fully in fw_node_event()
1294 * initialized we can reuse device->work to schedule a in fw_node_event()
1297 * the device in shutdown state to have that code fail in fw_node_event()
1298 * to create the device. in fw_node_event()
1300 device = node->data; in fw_node_event()
1301 if (atomic_xchg(&device->state, in fw_node_event()
1303 device->workfn = fw_device_shutdown; in fw_node_event()
1304 fw_schedule_device_work(device, in fw_node_event()