Lines Matching +full:rom +full:- +full:val
1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
14 #include <linux/firewire-constants.h>
38 ci->p = p + 1; in fw_csr_iterator_init()
39 ci->end = ci->p + (p[0] >> 16); in fw_csr_iterator_init()
45 *key = *ci->p >> 24; in fw_csr_iterator_next()
46 *value = *ci->p & 0xffffff; in fw_csr_iterator_next()
48 return ci->p++ < ci->end; in fw_csr_iterator_next()
62 return ci.p - 1 + value; in search_directory()
77 return ci.p - 1 + value; in search_leaf()
91 return -EINVAL; in textual_leaf_to_string()
95 return -ENODATA; in textual_leaf_to_string()
99 return -ENODATA; in textual_leaf_to_string()
102 quadlets -= 2; in textual_leaf_to_string()
103 for (i = 0; i < quadlets * 4 && i < size - 1; i++) { in textual_leaf_to_string()
104 c = block[i / 4] >> (24 - 8 * (i % 4)); in textual_leaf_to_string()
115 * fw_csr_string() - reads a string from the configuration ROM
122 * @key. The string is zero-terminated. An overlong string is silently truncated such that it
131 return -ENOENT; in fw_csr_string()
155 const u32 *root_directory = &fw_parent_device(unit)->config_rom[ROOT_DIR_OFFSET]; in get_modalias_ids()
162 // Legacy layout of configuration ROM described in Annex 1 of 'Configuration ROM for AV/C in get_modalias_ids()
166 directories[1] = unit->directory; in get_modalias_ids()
169 directories[2] = unit->directory; in get_modalias_ids()
180 if (id[0] == id_table->vendor_id) in match_ids()
182 if (id[1] == id_table->model_id) in match_ids()
184 if (id[2] == id_table->specifier_id) in match_ids()
186 if (id[3] == id_table->version) in match_ids()
189 return (match & id_table->match_flags) == id_table->match_flags; in match_ids()
196 container_of(drv, struct fw_driver, driver)->id_table; in unit_match()
201 for (; id_table->match_flags != 0; id_table++) in unit_match()
219 container_of(dev->driver, struct fw_driver, driver); in fw_unit_probe()
221 return driver->probe(fw_unit(dev), unit_match(dev, dev->driver)); in fw_unit_probe()
227 container_of(dev->driver, struct fw_driver, driver); in fw_unit_remove()
229 driver->remove(fw_unit(dev)); in fw_unit_remove()
251 return -ENOMEM; in fw_unit_uevent()
266 int generation = device->generation; in fw_device_enable_phys_dma()
268 /* device->node_id, accessed below, must not be older than generation */ in fw_device_enable_phys_dma()
271 return device->card->driver->enable_phys_dma(device->card, in fw_device_enable_phys_dma()
272 device->node_id, in fw_device_enable_phys_dma()
289 int i, value = -1; in show_immediate()
294 directories[0] = fw_unit(dev)->directory; in show_immediate()
296 const u32 *root_directory = fw_device(dev)->config_rom + ROOT_DIR_OFFSET; in show_immediate()
302 // Legacy layout of configuration ROM described in Annex 1 of in show_immediate()
303 // 'Configuration ROM for AV/C Devices 1.0 (December 12, 2000, 1394 Trading in show_immediate()
311 int key, val; in show_immediate() local
314 while (fw_csr_iterator_next(&ci, &key, &val)) { in show_immediate()
315 if (attr->key == key) in show_immediate()
316 value = val; in show_immediate()
323 return -ENOENT; in show_immediate()
339 int i, ret = -ENOENT; in show_text_leaf()
344 directories[0] = fw_unit(dev)->directory; in show_text_leaf()
346 const u32 *root_directory = fw_device(dev)->config_rom + ROOT_DIR_OFFSET; in show_text_leaf()
352 // Legacy layout of configuration ROM described in Annex 1 of in show_text_leaf()
353 // 'Configuration ROM for AV/C Devices 1.0 (December 12, 2000, 1394 in show_text_leaf()
361 bufsize = PAGE_SIZE - 1; in show_text_leaf()
368 int result = fw_csr_string(directories[i], attr->key, buf, bufsize); in show_text_leaf()
372 } else if (i == 0 && attr->key == CSR_VENDOR) { in show_text_leaf()
373 // Sony DVMC-DA1 has configuration ROM such that the descriptor leaf entry in show_text_leaf()
376 result = fw_csr_string(directories[i], CSR_DIRECTORY | attr->key, buf, in show_text_leaf()
385 while (ret > 0 && isspace(buf[ret - 1])) in show_text_leaf()
386 ret--; in show_text_leaf()
418 group->attrs[j] = &attrs[j].attr; in init_fw_attribute_group()
422 if (attr->show(dev, attr, NULL) < 0) in init_fw_attribute_group()
424 group->attrs[j++] = &attr->attr; in init_fw_attribute_group()
427 group->attrs[j] = NULL; in init_fw_attribute_group()
428 group->groups[0] = &group->group; in init_fw_attribute_group()
429 group->groups[1] = NULL; in init_fw_attribute_group()
430 group->group.attrs = group->attrs; in init_fw_attribute_group()
431 dev->groups = (const struct attribute_group **) group->groups; in init_fw_attribute_group()
449 struct fw_device *device = fw_device(dev->parent); in rom_index_show()
452 return sysfs_emit(buf, "%td\n", unit->directory - device->config_rom); in rom_index_show()
468 length = device->config_rom_length * 4; in config_rom_show()
469 memcpy(buf, device->config_rom, length); in config_rom_show()
482 ret = sysfs_emit(buf, "0x%08x%08x\n", device->config_rom[3], device->config_rom[4]); in guid_show()
493 return sprintf(buf, "%u\n", device->is_local); in is_local_show()
526 fw_csr_iterator_init(&ci, &device->config_rom[ROOT_DIR_OFFSET]); in units_show()
530 i += units_sprintf(&buf[i], ci.p + value - 1); in units_show()
531 if (i >= PAGE_SIZE - (8 + 1 + 8 + 1)) in units_show()
537 buf[i - 1] = '\n'; in units_show()
556 /* device->node_id, accessed below, must not be older than generation */ in read_rom()
560 rcode = fw_run_transaction(device->card, in read_rom()
561 TCODE_READ_QUADLET_REQUEST, device->node_id, in read_rom()
562 generation, device->max_speed, offset, data, 4); in read_rom()
576 * the config ROM. We do all this with a cached bus generation. If the bus
579 * are reading the ROM may have changed the ROM during the reset.
584 struct fw_card *card = device->card; in read_config_rom()
586 u32 *rom, *stack; in read_config_rom() local
590 rom = kmalloc(sizeof(*rom) * MAX_CONFIG_ROM_SIZE + in read_config_rom()
592 if (rom == NULL) in read_config_rom()
593 return -ENOMEM; in read_config_rom()
595 stack = &rom[MAX_CONFIG_ROM_SIZE]; in read_config_rom()
596 memset(rom, 0, sizeof(*rom) * MAX_CONFIG_ROM_SIZE); in read_config_rom()
598 device->max_speed = SCODE_100; in read_config_rom()
602 ret = read_rom(device, generation, i, &rom[i]); in read_config_rom()
608 * rom to indicate that they are booting (for example, in read_config_rom()
613 if (i == 0 && rom[i] == 0) { in read_config_rom()
619 device->max_speed = device->node->max_speed; in read_config_rom()
623 * - devices with link speed less than PHY speed, in read_config_rom()
624 * - devices with 1394b PHY (unless only connected to 1394a PHYs), in read_config_rom()
625 * - all devices if there are 1394b repeaters. in read_config_rom()
628 * 1394-1995 nodes do not have the field. in read_config_rom()
630 if ((rom[2] & 0x7) < device->max_speed || in read_config_rom()
631 device->max_speed == SCODE_BETA || in read_config_rom()
632 card->beta_repeaters_present) { in read_config_rom()
636 if (device->max_speed == SCODE_BETA) in read_config_rom()
637 device->max_speed = card->link_speed; in read_config_rom()
639 while (device->max_speed > SCODE_100) { in read_config_rom()
643 device->max_speed--; in read_config_rom()
648 * Now parse the config rom. The config rom is a recursive in read_config_rom()
660 * lower 24 bits is the offset into the config rom, in read_config_rom()
664 key = stack[--sp]; in read_config_rom()
667 ret = -ENXIO; in read_config_rom()
672 ret = read_rom(device, generation, i, &rom[i]); in read_config_rom()
675 end = i + (rom[i] >> 16) + 1; in read_config_rom()
678 * This block extends outside the config ROM which is in read_config_rom()
682 fw_err(card, "skipped invalid ROM block %x at %llx\n", in read_config_rom()
683 rom[i], in read_config_rom()
685 rom[i] = 0; in read_config_rom()
696 ret = read_rom(device, generation, i, &rom[i]); in read_config_rom()
700 if ((key >> 30) != 3 || (rom[i] >> 30) < 2) in read_config_rom()
703 * Offset points outside the ROM. May be a firmware in read_config_rom()
704 * bug or an Extended ROM entry (IEEE 1212-2001 clause in read_config_rom()
707 * the ROM don't have to check offsets all the time. in read_config_rom()
709 if (i + (rom[i] & 0xffffff) >= MAX_CONFIG_ROM_SIZE) { in read_config_rom()
711 "skipped unsupported ROM entry %x at %llx\n", in read_config_rom()
712 rom[i], in read_config_rom()
714 rom[i] = 0; in read_config_rom()
717 stack[sp++] = i + rom[i]; in read_config_rom()
723 old_rom = device->config_rom; in read_config_rom()
724 new_rom = kmemdup(rom, length * 4, GFP_KERNEL); in read_config_rom()
726 ret = -ENOMEM; in read_config_rom()
731 device->config_rom = new_rom; in read_config_rom()
732 device->config_rom_length = length; in read_config_rom()
737 device->max_rec = rom[2] >> 12 & 0xf; in read_config_rom()
738 device->cmc = rom[2] >> 30 & 1; in read_config_rom()
739 device->irmc = rom[2] >> 31 & 1; in read_config_rom()
741 kfree(rom); in read_config_rom()
761 return dev->type == &fw_unit_type; in is_fw_unit()
771 fw_csr_iterator_init(&ci, &device->config_rom[ROOT_DIR_OFFSET]); in create_units()
784 unit->directory = ci.p + value - 1; in create_units()
785 unit->device.bus = &fw_bus_type; in create_units()
786 unit->device.type = &fw_unit_type; in create_units()
787 unit->device.parent = &device->device; in create_units()
788 dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++); in create_units()
790 BUILD_BUG_ON(ARRAY_SIZE(unit->attribute_group.attrs) < in create_units()
793 init_fw_attribute_group(&unit->device, in create_units()
795 &unit->attribute_group); in create_units()
798 if (device_register(&unit->device) < 0) { in create_units()
799 put_device(&unit->device); in create_units()
814 * - serializes accesses to fw_device_idr,
815 * - serializes accesses to fw_device.config_rom/.config_rom_length and
842 queue_delayed_work(fw_workqueue, &device->work, delay); in fw_schedule_device_work()
847 * rom. It shouldn't be necessary to tweak these; if the device
848 * doesn't respond to a config rom read within 10 seconds, it's not
865 int minor = MINOR(device->device.devt); in fw_device_shutdown()
868 device->card->reset_jiffies + SHUTDOWN_DELAY) in fw_device_shutdown()
869 && !list_empty(&device->card->link)) { in fw_device_shutdown()
874 if (atomic_cmpxchg(&device->state, in fw_device_shutdown()
880 device_for_each_child(&device->device, NULL, shutdown_unit); in fw_device_shutdown()
881 device_unregister(&device->device); in fw_device_shutdown()
893 struct fw_card *card = device->card; in fw_device_release()
901 spin_lock_irqsave(&card->lock, flags); in fw_device_release()
902 device->node->data = NULL; in fw_device_release()
903 spin_unlock_irqrestore(&card->lock, flags); in fw_device_release()
905 fw_node_put(device->node); in fw_device_release()
906 kfree(device->config_rom); in fw_device_release()
917 return dev->type == &fw_device_type; in is_fw_device()
923 struct fw_driver *driver = (struct fw_driver *)dev->driver; in update_unit()
925 if (is_fw_unit(dev) && driver != NULL && driver->update != NULL) { in update_unit()
927 driver->update(unit); in update_unit()
940 device_for_each_child(&device->device, NULL, update_unit); in fw_device_update()
953 struct fw_card *card = new->card; in lookup_existing_device()
960 spin_lock_irq(&card->lock); /* serialize node access */ in lookup_existing_device()
962 if (memcmp(old->config_rom, new->config_rom, 6 * 4) == 0 && in lookup_existing_device()
963 atomic_cmpxchg(&old->state, in lookup_existing_device()
966 struct fw_node *current_node = new->node; in lookup_existing_device()
967 struct fw_node *obsolete_node = old->node; in lookup_existing_device()
969 new->node = obsolete_node; in lookup_existing_device()
970 new->node->data = new; in lookup_existing_device()
971 old->node = current_node; in lookup_existing_device()
972 old->node->data = old; in lookup_existing_device()
974 old->max_speed = new->max_speed; in lookup_existing_device()
975 old->node_id = current_node->node_id; in lookup_existing_device()
977 old->generation = card->generation; in lookup_existing_device()
978 old->config_rom_retries = 0; in lookup_existing_device()
981 old->workfn = fw_device_update; in lookup_existing_device()
984 if (current_node == card->root_node) in lookup_existing_device()
990 spin_unlock_irq(&card->lock); in lookup_existing_device()
1000 struct fw_card *card = device->card; in set_broadcast_channel()
1004 if (!card->broadcast_channel_allocated) in set_broadcast_channel()
1014 if (!device->irmc || device->max_rec < 8) in set_broadcast_channel()
1018 * Some 1394-1995 nodes crash if this 1394a-2000 register is written. in set_broadcast_channel()
1021 if (device->bc_implemented == BC_UNKNOWN) { in set_broadcast_channel()
1023 device->node_id, generation, device->max_speed, in set_broadcast_channel()
1029 device->bc_implemented = BC_IMPLEMENTED; in set_broadcast_channel()
1034 device->bc_implemented = BC_UNIMPLEMENTED; in set_broadcast_channel()
1038 if (device->bc_implemented == BC_IMPLEMENTED) { in set_broadcast_channel()
1042 device->node_id, generation, device->max_speed, in set_broadcast_channel()
1060 struct fw_card *card = device->card; in fw_device_init()
1065 * All failure paths here set node->data to NULL, so that we in fw_device_init()
1070 ret = read_config_rom(device, device->generation); in fw_device_init()
1072 if (device->config_rom_retries < MAX_RETRIES && in fw_device_init()
1073 atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { in fw_device_init()
1074 device->config_rom_retries++; in fw_device_init()
1077 if (device->node->link_on) in fw_device_init()
1078 fw_notice(card, "giving up on node %x: reading config rom failed: %s\n", in fw_device_init()
1079 device->node_id, in fw_device_init()
1081 if (device->node == card->root_node) in fw_device_init()
1083 fw_device_release(&device->device); in fw_device_init()
1088 revived_dev = device_find_child(card->device, in fw_device_init()
1092 fw_device_release(&device->device); in fw_device_init()
1097 device_initialize(&device->device); in fw_device_init()
1108 device->device.bus = &fw_bus_type; in fw_device_init()
1109 device->device.type = &fw_device_type; in fw_device_init()
1110 device->device.parent = card->device; in fw_device_init()
1111 device->device.devt = MKDEV(fw_cdev_major, minor); in fw_device_init()
1112 dev_set_name(&device->device, "fw%d", minor); in fw_device_init()
1114 BUILD_BUG_ON(ARRAY_SIZE(device->attribute_group.attrs) < in fw_device_init()
1117 init_fw_attribute_group(&device->device, in fw_device_init()
1119 &device->attribute_group); in fw_device_init()
1121 if (device_add(&device->device)) { in fw_device_init()
1137 if (atomic_cmpxchg(&device->state, in fw_device_init()
1140 device->workfn = fw_device_shutdown; in fw_device_init()
1144 dev_name(&device->device), in fw_device_init()
1145 device->config_rom[3], device->config_rom[4], in fw_device_init()
1146 1 << device->max_speed); in fw_device_init()
1147 device->config_rom_retries = 0; in fw_device_init()
1149 set_broadcast_channel(device, device->generation); in fw_device_init()
1151 add_device_randomness(&device->config_rom[3], 8); in fw_device_init()
1156 * root node config rom. If this races with a bus reset we in fw_device_init()
1157 * just end up running the IRM work a couple of extra times - in fw_device_init()
1160 if (device->node == card->root_node) in fw_device_init()
1172 put_device(&device->device); /* our reference */ in fw_device_init()
1191 if (q != device->config_rom[i]) { in reread_config_rom()
1205 struct fw_card *card = device->card; in fw_device_refresh()
1206 int ret, node_id = device->node_id; in fw_device_refresh()
1209 ret = reread_config_rom(device, device->generation, &changed); in fw_device_refresh()
1214 if (atomic_cmpxchg(&device->state, in fw_device_refresh()
1220 device->config_rom_retries = 0; in fw_device_refresh()
1228 device_for_each_child(&device->device, NULL, shutdown_unit); in fw_device_refresh()
1230 ret = read_config_rom(device, device->generation); in fw_device_refresh()
1237 /* Userspace may want to re-read attributes. */ in fw_device_refresh()
1238 kobject_uevent(&device->device.kobj, KOBJ_CHANGE); in fw_device_refresh()
1240 if (atomic_cmpxchg(&device->state, in fw_device_refresh()
1245 fw_notice(card, "refreshed device %s\n", dev_name(&device->device)); in fw_device_refresh()
1246 device->config_rom_retries = 0; in fw_device_refresh()
1250 if (device->config_rom_retries < MAX_RETRIES && in fw_device_refresh()
1251 atomic_read(&device->state) == FW_DEVICE_INITIALIZING) { in fw_device_refresh()
1252 device->config_rom_retries++; in fw_device_refresh()
1258 dev_name(&device->device), fw_rcode_string(ret)); in fw_device_refresh()
1260 atomic_set(&device->state, FW_DEVICE_GONE); in fw_device_refresh()
1261 device->workfn = fw_device_shutdown; in fw_device_refresh()
1264 if (node_id == card->root_node->node_id) in fw_device_refresh()
1272 device->workfn(work); in fw_device_workfn()
1284 * send L=0 but have an up-and-running link; others send L=1 in fw_node_event()
1298 * You can basically just check device->state and in fw_node_event()
1300 * card->lock. in fw_node_event()
1302 atomic_set(&device->state, FW_DEVICE_INITIALIZING); in fw_node_event()
1303 device->card = fw_card_get(card); in fw_node_event()
1304 device->node = fw_node_get(node); in fw_node_event()
1305 device->node_id = node->node_id; in fw_node_event()
1306 device->generation = card->generation; in fw_node_event()
1307 device->is_local = node == card->local_node; in fw_node_event()
1308 mutex_init(&device->client_list_mutex); in fw_node_event()
1309 INIT_LIST_HEAD(&device->client_list); in fw_node_event()
1316 node->data = device; in fw_node_event()
1321 * power-up after getting plugged in. We schedule the in fw_node_event()
1322 * first config rom scan half a second after bus reset. in fw_node_event()
1324 device->workfn = fw_device_init; in fw_node_event()
1325 INIT_DELAYED_WORK(&device->work, fw_device_workfn); in fw_node_event()
1331 device = node->data; in fw_node_event()
1335 device->node_id = node->node_id; in fw_node_event()
1337 device->generation = card->generation; in fw_node_event()
1338 if (atomic_cmpxchg(&device->state, in fw_node_event()
1341 device->workfn = fw_device_refresh; in fw_node_event()
1343 device->is_local ? 0 : INITIAL_DELAY); in fw_node_event()
1348 device = node->data; in fw_node_event()
1352 device->node_id = node->node_id; in fw_node_event()
1354 device->generation = card->generation; in fw_node_event()
1355 if (atomic_read(&device->state) == FW_DEVICE_RUNNING) { in fw_node_event()
1356 device->workfn = fw_device_update; in fw_node_event()
1363 if (!node->data) in fw_node_event()
1370 * process of reading its config rom in fw_node_event()
1372 * initialized we can reuse device->work to schedule a in fw_node_event()
1374 * scheduled to read it's config rom, and we just put in fw_node_event()
1378 device = node->data; in fw_node_event()
1379 if (atomic_xchg(&device->state, in fw_node_event()
1381 device->workfn = fw_device_shutdown; in fw_node_event()
1383 list_empty(&card->link) ? 0 : SHUTDOWN_DELAY); in fw_node_event()
1390 #include "device-attribute-test.c"