Lines Matching refs:device
91 struct dasd_device *device; in dasd_alloc_device() local
93 device = kzalloc(sizeof(struct dasd_device), GFP_ATOMIC); in dasd_alloc_device()
94 if (!device) in dasd_alloc_device()
98 device->ccw_mem = (void *) __get_free_pages(GFP_ATOMIC | GFP_DMA, 1); in dasd_alloc_device()
99 if (!device->ccw_mem) { in dasd_alloc_device()
100 kfree(device); in dasd_alloc_device()
104 device->erp_mem = (void *) get_zeroed_page(GFP_ATOMIC | GFP_DMA); in dasd_alloc_device()
105 if (!device->erp_mem) { in dasd_alloc_device()
106 free_pages((unsigned long) device->ccw_mem, 1); in dasd_alloc_device()
107 kfree(device); in dasd_alloc_device()
111 device->ese_mem = (void *)__get_free_pages(GFP_ATOMIC | GFP_DMA, 1); in dasd_alloc_device()
112 if (!device->ese_mem) { in dasd_alloc_device()
113 free_page((unsigned long) device->erp_mem); in dasd_alloc_device()
114 free_pages((unsigned long) device->ccw_mem, 1); in dasd_alloc_device()
115 kfree(device); in dasd_alloc_device()
119 dasd_init_chunklist(&device->ccw_chunks, device->ccw_mem, PAGE_SIZE*2); in dasd_alloc_device()
120 dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE); in dasd_alloc_device()
121 dasd_init_chunklist(&device->ese_chunks, device->ese_mem, PAGE_SIZE * 2); in dasd_alloc_device()
122 spin_lock_init(&device->mem_lock); in dasd_alloc_device()
123 atomic_set(&device->tasklet_scheduled, 0); in dasd_alloc_device()
124 tasklet_init(&device->tasklet, dasd_device_tasklet, in dasd_alloc_device()
125 (unsigned long) device); in dasd_alloc_device()
126 INIT_LIST_HEAD(&device->ccw_queue); in dasd_alloc_device()
127 timer_setup(&device->timer, dasd_device_timeout, 0); in dasd_alloc_device()
128 INIT_WORK(&device->kick_work, do_kick_device); in dasd_alloc_device()
129 INIT_WORK(&device->reload_device, do_reload_device); in dasd_alloc_device()
130 INIT_WORK(&device->requeue_requests, do_requeue_requests); in dasd_alloc_device()
131 device->state = DASD_STATE_NEW; in dasd_alloc_device()
132 device->target = DASD_STATE_NEW; in dasd_alloc_device()
133 mutex_init(&device->state_mutex); in dasd_alloc_device()
134 spin_lock_init(&device->profile.lock); in dasd_alloc_device()
135 return device; in dasd_alloc_device()
141 void dasd_free_device(struct dasd_device *device) in dasd_free_device() argument
143 kfree(device->private); in dasd_free_device()
144 free_pages((unsigned long) device->ese_mem, 1); in dasd_free_device()
145 free_page((unsigned long) device->erp_mem); in dasd_free_device()
146 free_pages((unsigned long) device->ccw_mem, 1); in dasd_free_device()
147 kfree(device); in dasd_free_device()
189 static int dasd_state_new_to_known(struct dasd_device *device) in dasd_state_new_to_known() argument
195 dasd_get_device(device); in dasd_state_new_to_known()
196 device->state = DASD_STATE_KNOWN; in dasd_state_new_to_known()
203 static int dasd_state_known_to_new(struct dasd_device *device) in dasd_state_known_to_new() argument
206 dasd_eer_disable(device); in dasd_state_known_to_new()
207 device->state = DASD_STATE_NEW; in dasd_state_known_to_new()
210 dasd_put_device(device); in dasd_state_known_to_new()
230 static int dasd_state_known_to_basic(struct dasd_device *device) in dasd_state_known_to_basic() argument
232 struct dasd_block *block = device->block; in dasd_state_known_to_basic()
245 dasd_profile_on(&device->block->profile); in dasd_state_known_to_basic()
247 device->debugfs_dentry = in dasd_state_known_to_basic()
248 dasd_debugfs_setup(dev_name(&device->cdev->dev), in dasd_state_known_to_basic()
250 dasd_profile_init(&device->profile, device->debugfs_dentry); in dasd_state_known_to_basic()
251 dasd_hosts_init(device->debugfs_dentry, device); in dasd_state_known_to_basic()
254 device->debug_area = debug_register(dev_name(&device->cdev->dev), 4, 1, in dasd_state_known_to_basic()
256 debug_register_view(device->debug_area, &debug_sprintf_view); in dasd_state_known_to_basic()
257 debug_set_level(device->debug_area, DBF_WARNING); in dasd_state_known_to_basic()
258 DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created"); in dasd_state_known_to_basic()
260 device->state = DASD_STATE_BASIC; in dasd_state_known_to_basic()
268 static int dasd_state_basic_to_known(struct dasd_device *device) in dasd_state_basic_to_known() argument
272 if (device->discipline->basic_to_known) { in dasd_state_basic_to_known()
273 rc = device->discipline->basic_to_known(device); in dasd_state_basic_to_known()
278 if (device->block) { in dasd_state_basic_to_known()
279 dasd_profile_exit(&device->block->profile); in dasd_state_basic_to_known()
280 debugfs_remove(device->block->debugfs_dentry); in dasd_state_basic_to_known()
281 dasd_gendisk_free(device->block); in dasd_state_basic_to_known()
282 dasd_block_clear_timer(device->block); in dasd_state_basic_to_known()
284 rc = dasd_flush_device_queue(device); in dasd_state_basic_to_known()
287 dasd_device_clear_timer(device); in dasd_state_basic_to_known()
288 dasd_profile_exit(&device->profile); in dasd_state_basic_to_known()
289 dasd_hosts_exit(device); in dasd_state_basic_to_known()
290 debugfs_remove(device->debugfs_dentry); in dasd_state_basic_to_known()
291 DBF_DEV_EVENT(DBF_EMERG, device, "%p debug area deleted", device); in dasd_state_basic_to_known()
292 if (device->debug_area != NULL) { in dasd_state_basic_to_known()
293 debug_unregister(device->debug_area); in dasd_state_basic_to_known()
294 device->debug_area = NULL; in dasd_state_basic_to_known()
296 device->state = DASD_STATE_KNOWN; in dasd_state_basic_to_known()
314 static int dasd_state_basic_to_ready(struct dasd_device *device) in dasd_state_basic_to_ready() argument
321 block = device->block; in dasd_state_basic_to_ready()
328 device->state = DASD_STATE_UNFMT; in dasd_state_basic_to_ready()
329 disk = device->block->gdp; in dasd_state_basic_to_ready()
336 if (device->discipline->setup_blk_queue) in dasd_state_basic_to_ready()
337 device->discipline->setup_blk_queue(block); in dasd_state_basic_to_ready()
340 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
343 device->state = DASD_STATE_BASIC; in dasd_state_basic_to_ready()
347 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
350 if (device->discipline->basic_to_ready) in dasd_state_basic_to_ready()
351 rc = device->discipline->basic_to_ready(device); in dasd_state_basic_to_ready()
356 int _wait_for_empty_queues(struct dasd_device *device) in _wait_for_empty_queues() argument
358 if (device->block) in _wait_for_empty_queues()
359 return list_empty(&device->ccw_queue) && in _wait_for_empty_queues()
360 list_empty(&device->block->ccw_queue); in _wait_for_empty_queues()
362 return list_empty(&device->ccw_queue); in _wait_for_empty_queues()
370 static int dasd_state_ready_to_basic(struct dasd_device *device) in dasd_state_ready_to_basic() argument
374 device->state = DASD_STATE_BASIC; in dasd_state_ready_to_basic()
375 if (device->block) { in dasd_state_ready_to_basic()
376 struct dasd_block *block = device->block; in dasd_state_ready_to_basic()
379 device->state = DASD_STATE_READY; in dasd_state_ready_to_basic()
393 static int dasd_state_unfmt_to_basic(struct dasd_device *device) in dasd_state_unfmt_to_basic() argument
395 device->state = DASD_STATE_BASIC; in dasd_state_unfmt_to_basic()
405 dasd_state_ready_to_online(struct dasd_device * device) in dasd_state_ready_to_online() argument
407 device->state = DASD_STATE_ONLINE; in dasd_state_ready_to_online()
408 if (device->block) { in dasd_state_ready_to_online()
409 dasd_schedule_block_bh(device->block); in dasd_state_ready_to_online()
410 if ((device->features & DASD_FEATURE_USERAW)) { in dasd_state_ready_to_online()
411 kobject_uevent(&disk_to_dev(device->block->gdp)->kobj, in dasd_state_ready_to_online()
415 disk_uevent(device->block->bdev->bd_disk, KOBJ_CHANGE); in dasd_state_ready_to_online()
423 static int dasd_state_online_to_ready(struct dasd_device *device) in dasd_state_online_to_ready() argument
427 if (device->discipline->online_to_ready) { in dasd_state_online_to_ready()
428 rc = device->discipline->online_to_ready(device); in dasd_state_online_to_ready()
433 device->state = DASD_STATE_READY; in dasd_state_online_to_ready()
434 if (device->block && !(device->features & DASD_FEATURE_USERAW)) in dasd_state_online_to_ready()
435 disk_uevent(device->block->bdev->bd_disk, KOBJ_CHANGE); in dasd_state_online_to_ready()
442 static int dasd_increase_state(struct dasd_device *device) in dasd_increase_state() argument
447 if (device->state == DASD_STATE_NEW && in dasd_increase_state()
448 device->target >= DASD_STATE_KNOWN) in dasd_increase_state()
449 rc = dasd_state_new_to_known(device); in dasd_increase_state()
452 device->state == DASD_STATE_KNOWN && in dasd_increase_state()
453 device->target >= DASD_STATE_BASIC) in dasd_increase_state()
454 rc = dasd_state_known_to_basic(device); in dasd_increase_state()
457 device->state == DASD_STATE_BASIC && in dasd_increase_state()
458 device->target >= DASD_STATE_READY) in dasd_increase_state()
459 rc = dasd_state_basic_to_ready(device); in dasd_increase_state()
462 device->state == DASD_STATE_UNFMT && in dasd_increase_state()
463 device->target > DASD_STATE_UNFMT) in dasd_increase_state()
467 device->state == DASD_STATE_READY && in dasd_increase_state()
468 device->target >= DASD_STATE_ONLINE) in dasd_increase_state()
469 rc = dasd_state_ready_to_online(device); in dasd_increase_state()
477 static int dasd_decrease_state(struct dasd_device *device) in dasd_decrease_state() argument
482 if (device->state == DASD_STATE_ONLINE && in dasd_decrease_state()
483 device->target <= DASD_STATE_READY) in dasd_decrease_state()
484 rc = dasd_state_online_to_ready(device); in dasd_decrease_state()
487 device->state == DASD_STATE_READY && in dasd_decrease_state()
488 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
489 rc = dasd_state_ready_to_basic(device); in dasd_decrease_state()
492 device->state == DASD_STATE_UNFMT && in dasd_decrease_state()
493 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
494 rc = dasd_state_unfmt_to_basic(device); in dasd_decrease_state()
497 device->state == DASD_STATE_BASIC && in dasd_decrease_state()
498 device->target <= DASD_STATE_KNOWN) in dasd_decrease_state()
499 rc = dasd_state_basic_to_known(device); in dasd_decrease_state()
502 device->state == DASD_STATE_KNOWN && in dasd_decrease_state()
503 device->target <= DASD_STATE_NEW) in dasd_decrease_state()
504 rc = dasd_state_known_to_new(device); in dasd_decrease_state()
512 static void dasd_change_state(struct dasd_device *device) in dasd_change_state() argument
516 if (device->state == device->target) in dasd_change_state()
519 if (device->state < device->target) in dasd_change_state()
520 rc = dasd_increase_state(device); in dasd_change_state()
522 rc = dasd_decrease_state(device); in dasd_change_state()
526 device->target = device->state; in dasd_change_state()
529 kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); in dasd_change_state()
531 if (device->state == device->target) in dasd_change_state()
543 struct dasd_device *device = container_of(work, struct dasd_device, kick_work); in do_kick_device() local
544 mutex_lock(&device->state_mutex); in do_kick_device()
545 dasd_change_state(device); in do_kick_device()
546 mutex_unlock(&device->state_mutex); in do_kick_device()
547 dasd_schedule_device_bh(device); in do_kick_device()
548 dasd_put_device(device); in do_kick_device()
551 void dasd_kick_device(struct dasd_device *device) in dasd_kick_device() argument
553 dasd_get_device(device); in dasd_kick_device()
555 if (!schedule_work(&device->kick_work)) in dasd_kick_device()
556 dasd_put_device(device); in dasd_kick_device()
566 struct dasd_device *device = container_of(work, struct dasd_device, in do_reload_device() local
568 device->discipline->reload(device); in do_reload_device()
569 dasd_put_device(device); in do_reload_device()
572 void dasd_reload_device(struct dasd_device *device) in dasd_reload_device() argument
574 dasd_get_device(device); in dasd_reload_device()
576 if (!schedule_work(&device->reload_device)) in dasd_reload_device()
577 dasd_put_device(device); in dasd_reload_device()
584 void dasd_set_target_state(struct dasd_device *device, int target) in dasd_set_target_state() argument
586 dasd_get_device(device); in dasd_set_target_state()
587 mutex_lock(&device->state_mutex); in dasd_set_target_state()
591 if (device->target != target) { in dasd_set_target_state()
592 if (device->state == target) in dasd_set_target_state()
594 device->target = target; in dasd_set_target_state()
596 if (device->state != device->target) in dasd_set_target_state()
597 dasd_change_state(device); in dasd_set_target_state()
598 mutex_unlock(&device->state_mutex); in dasd_set_target_state()
599 dasd_put_device(device); in dasd_set_target_state()
605 static inline int _wait_for_device(struct dasd_device *device) in _wait_for_device() argument
607 return (device->state == device->target); in _wait_for_device()
610 void dasd_enable_device(struct dasd_device *device) in dasd_enable_device() argument
612 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_enable_device()
613 if (device->state <= DASD_STATE_KNOWN) in dasd_enable_device()
615 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_enable_device()
617 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_enable_device()
619 dasd_reload_device(device); in dasd_enable_device()
620 if (device->discipline->kick_validate) in dasd_enable_device()
621 device->discipline->kick_validate(device); in dasd_enable_device()
646 struct dasd_device *device; in dasd_profile_start() local
676 device = cqr->startdev; in dasd_profile_start()
677 if (device->profile.data) { in dasd_profile_start()
679 list_for_each(l, &device->ccw_queue) in dasd_profile_start()
683 spin_lock(&device->profile.lock); in dasd_profile_start()
684 if (device->profile.data) { in dasd_profile_start()
685 device->profile.data->dasd_io_nr_req[counter]++; in dasd_profile_start()
687 device->profile.data->dasd_read_nr_req[counter]++; in dasd_profile_start()
689 spin_unlock(&device->profile.lock); in dasd_profile_start()
756 struct dasd_device *device; in dasd_profile_end() local
761 device = cqr->startdev; in dasd_profile_end()
764 device->profile.data)) in dasd_profile_end()
823 spin_lock(&device->profile.lock); in dasd_profile_end()
824 if (device->profile.data) { in dasd_profile_end()
825 data = device->profile.data; in dasd_profile_end()
830 dasd_profile_end_add_data(device->profile.data, in dasd_profile_end()
839 spin_unlock(&device->profile.lock); in dasd_profile_end()
1131 struct dasd_device *device; in dasd_hosts_show() local
1134 device = m->private; in dasd_hosts_show()
1135 dasd_get_device(device); in dasd_hosts_show()
1137 if (device->discipline->hosts_print) in dasd_hosts_show()
1138 rc = device->discipline->hosts_print(device, m); in dasd_hosts_show()
1140 dasd_put_device(device); in dasd_hosts_show()
1146 static void dasd_hosts_exit(struct dasd_device *device) in dasd_hosts_exit() argument
1148 debugfs_remove(device->hosts_dentry); in dasd_hosts_exit()
1149 device->hosts_dentry = NULL; in dasd_hosts_exit()
1153 struct dasd_device *device) in dasd_hosts_init() argument
1163 device, &dasd_hosts_fops); in dasd_hosts_init()
1165 device->hosts_dentry = pde; in dasd_hosts_init()
1169 struct dasd_device *device, in dasd_smalloc_request() argument
1183 spin_lock_irqsave(&device->mem_lock, flags); in dasd_smalloc_request()
1184 data = chunk = dasd_alloc_chunk(&device->ccw_chunks, size); in dasd_smalloc_request()
1185 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_smalloc_request()
1205 dasd_get_device(device); in dasd_smalloc_request()
1212 struct dasd_device *device) in dasd_fmalloc_request() argument
1226 spin_lock_irqsave(&device->mem_lock, flags); in dasd_fmalloc_request()
1227 cqr = dasd_alloc_chunk(&device->ese_chunks, size); in dasd_fmalloc_request()
1228 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_fmalloc_request()
1247 dasd_get_device(device); in dasd_fmalloc_request()
1253 void dasd_sfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_sfree_request() argument
1257 spin_lock_irqsave(&device->mem_lock, flags); in dasd_sfree_request()
1258 dasd_free_chunk(&device->ccw_chunks, cqr->mem_chunk); in dasd_sfree_request()
1259 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_sfree_request()
1260 dasd_put_device(device); in dasd_sfree_request()
1264 void dasd_ffree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_ffree_request() argument
1268 spin_lock_irqsave(&device->mem_lock, flags); in dasd_ffree_request()
1269 dasd_free_chunk(&device->ese_chunks, cqr); in dasd_ffree_request()
1270 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_ffree_request()
1271 dasd_put_device(device); in dasd_ffree_request()
1280 struct dasd_device *device; in dasd_check_cqr() local
1284 device = cqr->startdev; in dasd_check_cqr()
1285 if (strncmp((char *) &cqr->magic, device->discipline->ebcname, 4)) { in dasd_check_cqr()
1286 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_check_cqr()
1290 *(unsigned int *) device->discipline->name); in dasd_check_cqr()
1304 struct dasd_device *device; in dasd_term_IO() local
1313 device = (struct dasd_device *) cqr->startdev; in dasd_term_IO()
1315 rc = ccw_device_clear(device->cdev, (long) cqr); in dasd_term_IO()
1321 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_term_IO()
1326 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1339 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1347 dev_err(&device->cdev->dev, "An error occurred in the " in dasd_term_IO()
1354 dasd_schedule_device_bh(device); in dasd_term_IO()
1365 struct dasd_device *device; in dasd_start_IO() local
1375 device = (struct dasd_device *) cqr->startdev; in dasd_start_IO()
1378 test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags)) && in dasd_start_IO()
1380 DBF_DEV_EVENT(DBF_DEBUG, device, "start_IO: return request %p " in dasd_start_IO()
1389 dev_err(&device->cdev->dev, "An error occurred in the DASD " in dasd_start_IO()
1398 cqr->lpm &= dasd_path_get_opm(device); in dasd_start_IO()
1400 cqr->lpm = dasd_path_get_opm(device); in dasd_start_IO()
1410 rc = ccw_device_tm_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1413 rc = ccw_device_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1421 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1433 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_start_IO()
1436 } else if (cqr->lpm != dasd_path_get_opm(device)) { in dasd_start_IO()
1437 cqr->lpm = dasd_path_get_opm(device); in dasd_start_IO()
1438 DBF_DEV_EVENT(DBF_DEBUG, device, "%s", in dasd_start_IO()
1442 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1445 dasd_generic_last_path_gone(device); in dasd_start_IO()
1446 dasd_path_no_path(device); in dasd_start_IO()
1447 dasd_path_set_tbvpm(device, in dasd_start_IO()
1449 device->cdev)); in dasd_start_IO()
1453 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1456 dasd_handle_autoquiesce(device, cqr, DASD_EER_STARTIO); in dasd_start_IO()
1459 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1463 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1470 dev_err(&device->cdev->dev, in dasd_start_IO()
1492 struct dasd_device *device; in dasd_device_timeout() local
1494 device = from_timer(device, t, timer); in dasd_device_timeout()
1495 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1497 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_device_timeout()
1498 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1499 dasd_schedule_device_bh(device); in dasd_device_timeout()
1505 void dasd_device_set_timer(struct dasd_device *device, int expires) in dasd_device_set_timer() argument
1508 del_timer(&device->timer); in dasd_device_set_timer()
1510 mod_timer(&device->timer, jiffies + expires); in dasd_device_set_timer()
1517 void dasd_device_clear_timer(struct dasd_device *device) in dasd_device_clear_timer() argument
1519 del_timer(&device->timer); in dasd_device_clear_timer()
1527 struct dasd_device *device; in dasd_handle_killed_request() local
1539 device = dasd_device_from_cdev_locked(cdev); in dasd_handle_killed_request()
1540 if (IS_ERR(device)) { in dasd_handle_killed_request()
1547 device != cqr->startdev || in dasd_handle_killed_request()
1552 dasd_put_device(device); in dasd_handle_killed_request()
1559 dasd_device_clear_timer(device); in dasd_handle_killed_request()
1560 dasd_schedule_device_bh(device); in dasd_handle_killed_request()
1561 dasd_put_device(device); in dasd_handle_killed_request()
1564 void dasd_generic_handle_state_change(struct dasd_device *device) in dasd_generic_handle_state_change() argument
1567 dasd_eer_snss(device); in dasd_generic_handle_state_change()
1569 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_generic_handle_state_change()
1570 dasd_schedule_device_bh(device); in dasd_generic_handle_state_change()
1571 if (device->block) { in dasd_generic_handle_state_change()
1572 dasd_schedule_block_bh(device->block); in dasd_generic_handle_state_change()
1573 if (device->block->gdp) in dasd_generic_handle_state_change()
1574 blk_mq_run_hw_queues(device->block->gdp->queue, true); in dasd_generic_handle_state_change()
1588 struct dasd_device *device = NULL; in dasd_ese_needs_format() local
1593 device = block->base; in dasd_ese_needs_format()
1594 if (!device || !device->discipline->is_ese) in dasd_ese_needs_format()
1596 if (!device->discipline->is_ese(device)) in dasd_ese_needs_format()
1623 struct dasd_device *device; in dasd_int_handler() local
1636 device = cqr->startdev; in dasd_int_handler()
1638 dasd_device_clear_timer(device); in dasd_int_handler()
1640 dasd_schedule_device_bh(device); in dasd_int_handler()
1664 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1665 if (IS_ERR(device)) in dasd_int_handler()
1668 if (device->discipline == dasd_diag_discipline_pointer) { in dasd_int_handler()
1669 dasd_put_device(device); in dasd_int_handler()
1691 dasd_generic_space_exhaust(device, cqr); in dasd_int_handler()
1692 device->discipline->ext_pool_exhaust(device, cqr); in dasd_int_handler()
1693 dasd_put_device(device); in dasd_int_handler()
1698 device->discipline->dump_sense_dbf(device, irb, "int"); in dasd_int_handler()
1700 if (device->features & DASD_FEATURE_ERPLOG) in dasd_int_handler()
1701 device->discipline->dump_sense(device, cqr, irb); in dasd_int_handler()
1702 device->discipline->check_for_device_change(device, cqr, irb); in dasd_int_handler()
1703 dasd_put_device(device); in dasd_int_handler()
1708 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1709 if (!IS_ERR(device)) { in dasd_int_handler()
1710 device->discipline->check_attention(device, in dasd_int_handler()
1712 dasd_put_device(device); in dasd_int_handler()
1719 device = (struct dasd_device *) cqr->startdev; in dasd_int_handler()
1720 if (!device || in dasd_int_handler()
1721 strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { in dasd_int_handler()
1734 device->discipline->ese_read(cqr, irb); in dasd_int_handler()
1737 dasd_device_clear_timer(device); in dasd_int_handler()
1738 dasd_schedule_device_bh(device); in dasd_int_handler()
1741 fcqr = device->discipline->ese_format(device, cqr, irb); in dasd_int_handler()
1752 dasd_schedule_device_bh(device); in dasd_int_handler()
1757 list_add(&fcqr->devlist, &device->ccw_queue); in dasd_int_handler()
1758 dasd_schedule_device_bh(device); in dasd_int_handler()
1767 dasd_device_clear_timer(device); in dasd_int_handler()
1769 dasd_schedule_device_bh(device); in dasd_int_handler()
1775 DBF_DEV_EVENT(DBF_DEBUG, device, "invalid status: bus_id %s, " in dasd_int_handler()
1788 if (cqr->devlist.next != &device->ccw_queue) { in dasd_int_handler()
1798 device->discipline->handle_hpf_error) in dasd_int_handler()
1799 device->discipline->handle_hpf_error(device, irb); in dasd_int_handler()
1806 if (cqr->lpm == dasd_path_get_opm(device)) in dasd_int_handler()
1807 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_int_handler()
1812 cqr->lpm = dasd_path_get_opm(device); in dasd_int_handler()
1819 (!device->stopped)) { in dasd_int_handler()
1820 if (device->discipline->start_IO(next) == 0) in dasd_int_handler()
1824 dasd_device_set_timer(device, expires); in dasd_int_handler()
1826 dasd_device_clear_timer(device); in dasd_int_handler()
1827 dasd_schedule_device_bh(device); in dasd_int_handler()
1833 struct dasd_device *device; in dasd_generic_uc_handler() local
1835 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_uc_handler()
1837 if (IS_ERR(device)) in dasd_generic_uc_handler()
1839 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || in dasd_generic_uc_handler()
1840 device->state != device->target || in dasd_generic_uc_handler()
1841 !device->discipline->check_for_device_change){ in dasd_generic_uc_handler()
1842 dasd_put_device(device); in dasd_generic_uc_handler()
1845 if (device->discipline->dump_sense_dbf) in dasd_generic_uc_handler()
1846 device->discipline->dump_sense_dbf(device, irb, "uc"); in dasd_generic_uc_handler()
1847 device->discipline->check_for_device_change(device, NULL, irb); in dasd_generic_uc_handler()
1848 dasd_put_device(device); in dasd_generic_uc_handler()
1858 static void __dasd_device_recovery(struct dasd_device *device, in __dasd_device_recovery() argument
1870 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_recovery()
1883 static void __dasd_device_process_ccw_queue(struct dasd_device *device, in __dasd_device_process_ccw_queue() argument
1890 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_process_ccw_queue()
1899 __dasd_device_recovery(device, cqr); in __dasd_device_process_ccw_queue()
1906 static void __dasd_process_cqr(struct dasd_device *device, in __dasd_process_cqr() argument
1924 dev_err(&device->cdev->dev, in __dasd_process_cqr()
1937 static void __dasd_device_process_final_queue(struct dasd_device *device, in __dasd_device_process_final_queue() argument
1949 __dasd_process_cqr(device, cqr); in __dasd_device_process_final_queue()
1952 __dasd_process_cqr(device, cqr); in __dasd_device_process_final_queue()
1961 static void __dasd_device_check_autoquiesce_timeout(struct dasd_device *device, in __dasd_device_check_autoquiesce_timeout() argument
1964 if ((device->default_retries - cqr->retries) >= device->aq_timeouts) in __dasd_device_check_autoquiesce_timeout()
1965 dasd_handle_autoquiesce(device, cqr, DASD_EER_TIMEOUTS); in __dasd_device_check_autoquiesce_timeout()
1972 static void __dasd_device_check_expire(struct dasd_device *device) in __dasd_device_check_expire() argument
1976 if (list_empty(&device->ccw_queue)) in __dasd_device_check_expire()
1978 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_check_expire()
1981 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_check_expire()
1988 if (device->discipline->term_IO(cqr) != 0) { in __dasd_device_check_expire()
1990 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
1995 dasd_device_set_timer(device, 5*HZ); in __dasd_device_check_expire()
1997 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
2002 __dasd_device_check_autoquiesce_timeout(device, cqr); in __dasd_device_check_expire()
2009 static int __dasd_device_is_unusable(struct dasd_device *device, in __dasd_device_is_unusable() argument
2014 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) && in __dasd_device_is_unusable()
2015 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_is_unusable()
2022 if (device->stopped) { in __dasd_device_is_unusable()
2023 if (device->stopped & mask) { in __dasd_device_is_unusable()
2041 static void __dasd_device_start_head(struct dasd_device *device) in __dasd_device_start_head() argument
2046 if (list_empty(&device->ccw_queue)) in __dasd_device_start_head()
2048 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_start_head()
2052 if (__dasd_device_is_unusable(device, cqr)) { in __dasd_device_start_head()
2055 dasd_schedule_device_bh(device); in __dasd_device_start_head()
2059 rc = device->discipline->start_IO(cqr); in __dasd_device_start_head()
2061 dasd_device_set_timer(device, cqr->expires); in __dasd_device_start_head()
2063 dasd_schedule_device_bh(device); in __dasd_device_start_head()
2066 dasd_device_set_timer(device, 50); in __dasd_device_start_head()
2069 static void __dasd_device_check_path_events(struct dasd_device *device) in __dasd_device_check_path_events() argument
2074 tbvpm = dasd_path_get_tbvpm(device); in __dasd_device_check_path_events()
2075 fcsecpm = dasd_path_get_fcsecpm(device); in __dasd_device_check_path_events()
2080 if (device->stopped & ~(DASD_STOPPED_DC_WAIT)) in __dasd_device_check_path_events()
2083 dasd_path_clear_all_verify(device); in __dasd_device_check_path_events()
2084 dasd_path_clear_all_fcsec(device); in __dasd_device_check_path_events()
2086 rc = device->discipline->pe_handler(device, tbvpm, fcsecpm); in __dasd_device_check_path_events()
2088 dasd_path_add_tbvpm(device, tbvpm); in __dasd_device_check_path_events()
2089 dasd_path_add_fcsecpm(device, fcsecpm); in __dasd_device_check_path_events()
2090 dasd_device_set_timer(device, 50); in __dasd_device_check_path_events()
2104 int dasd_flush_device_queue(struct dasd_device *device) in dasd_flush_device_queue() argument
2111 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
2113 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_flush_device_queue()
2117 rc = device->discipline->term_IO(cqr); in dasd_flush_device_queue()
2120 dev_err(&device->cdev->dev, in dasd_flush_device_queue()
2137 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
2150 __dasd_device_process_final_queue(device, &flush_queue); in dasd_flush_device_queue()
2160 struct dasd_device *device = (struct dasd_device *) data; in dasd_device_tasklet() local
2163 atomic_set (&device->tasklet_scheduled, 0); in dasd_device_tasklet()
2165 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2167 __dasd_device_check_expire(device); in dasd_device_tasklet()
2169 __dasd_device_process_ccw_queue(device, &final_queue); in dasd_device_tasklet()
2170 __dasd_device_check_path_events(device); in dasd_device_tasklet()
2171 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2173 __dasd_device_process_final_queue(device, &final_queue); in dasd_device_tasklet()
2174 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2176 __dasd_device_start_head(device); in dasd_device_tasklet()
2177 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2180 dasd_put_device(device); in dasd_device_tasklet()
2186 void dasd_schedule_device_bh(struct dasd_device *device) in dasd_schedule_device_bh() argument
2189 if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) in dasd_schedule_device_bh()
2191 dasd_get_device(device); in dasd_schedule_device_bh()
2192 tasklet_hi_schedule(&device->tasklet); in dasd_schedule_device_bh()
2196 void dasd_device_set_stop_bits(struct dasd_device *device, int bits) in dasd_device_set_stop_bits() argument
2198 device->stopped |= bits; in dasd_device_set_stop_bits()
2202 void dasd_device_remove_stop_bits(struct dasd_device *device, int bits) in dasd_device_remove_stop_bits() argument
2204 device->stopped &= ~bits; in dasd_device_remove_stop_bits()
2205 if (!device->stopped) in dasd_device_remove_stop_bits()
2216 struct dasd_device *device; in dasd_add_request_head() local
2219 device = cqr->startdev; in dasd_add_request_head()
2220 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2222 list_add(&cqr->devlist, &device->ccw_queue); in dasd_add_request_head()
2224 dasd_schedule_device_bh(device); in dasd_add_request_head()
2225 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2235 struct dasd_device *device; in dasd_add_request_tail() local
2238 device = cqr->startdev; in dasd_add_request_tail()
2239 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2241 list_add_tail(&cqr->devlist, &device->ccw_queue); in dasd_add_request_tail()
2243 dasd_schedule_device_bh(device); in dasd_add_request_tail()
2244 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2262 struct dasd_device *device; in _wait_for_wakeup() local
2265 device = cqr->startdev; in _wait_for_wakeup()
2266 spin_lock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2268 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2277 struct dasd_device *device; in __dasd_sleep_on_erp() local
2282 device = cqr->startdev; in __dasd_sleep_on_erp()
2285 device->discipline->handle_terminated_request(cqr); in __dasd_sleep_on_erp()
2289 erp_fn = device->discipline->erp_action(cqr); in __dasd_sleep_on_erp()
2296 __dasd_process_erp(device, cqr); in __dasd_sleep_on_erp()
2316 struct dasd_device *device; in _dasd_sleep_on() local
2323 device = maincqr->startdev; in _dasd_sleep_on()
2333 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on()
2340 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on()
2342 !dasd_eer_enabled(device) && device->aq_mask == 0) { in _dasd_sleep_on()
2351 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in _dasd_sleep_on()
2363 generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2370 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2420 struct dasd_device *device; in _dasd_sleep_on_queue() local
2427 device = cqr->startdev; in _dasd_sleep_on_queue()
2431 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on_queue()
2438 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on_queue()
2440 !dasd_eer_enabled(device)) { in _dasd_sleep_on_queue()
2449 generic_waitq, !device->stopped); in _dasd_sleep_on_queue()
2456 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on_queue()
2545 static inline int _dasd_term_running_cqr(struct dasd_device *device) in _dasd_term_running_cqr() argument
2550 if (list_empty(&device->ccw_queue)) in _dasd_term_running_cqr()
2552 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in _dasd_term_running_cqr()
2553 rc = device->discipline->term_IO(cqr); in _dasd_term_running_cqr()
2566 struct dasd_device *device; in dasd_sleep_on_immediatly() local
2569 device = cqr->startdev; in dasd_sleep_on_immediatly()
2570 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in dasd_sleep_on_immediatly()
2576 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2577 rc = _dasd_term_running_cqr(device); in dasd_sleep_on_immediatly()
2579 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2589 list_add(&cqr->devlist, device->ccw_queue.next); in dasd_sleep_on_immediatly()
2592 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2594 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2606 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2607 if (device->block) in dasd_sleep_on_immediatly()
2608 dasd_schedule_block_bh(device->block); in dasd_sleep_on_immediatly()
2625 struct dasd_device *device = cqr->startdev; in __dasd_cancel_req() local
2635 rc = device->discipline->term_IO(cqr); in __dasd_cancel_req()
2637 dev_err(&device->cdev->dev, in __dasd_cancel_req()
2647 dasd_schedule_device_bh(device); in __dasd_cancel_req()
2653 struct dasd_device *device = cqr->startdev; in dasd_cancel_req() local
2657 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2659 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2710 static void __dasd_process_erp(struct dasd_device *device, in __dasd_process_erp() argument
2716 DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful"); in __dasd_process_erp()
2718 dev_err(&device->cdev->dev, "ERP failed for the DASD\n"); in __dasd_process_erp()
2719 erp_fn = device->discipline->erp_postaction(cqr); in __dasd_process_erp()
3153 struct dasd_device *device; in dasd_times_out() local
3163 device = cqr->startdev ? cqr->startdev : block->base; in dasd_times_out()
3164 if (!device->blk_timeout) { in dasd_times_out()
3168 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_times_out()
3173 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3210 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3377 int dasd_device_is_ro(struct dasd_device *device) in dasd_device_is_ro() argument
3385 ccw_device_get_id(device->cdev, &dev_id); in dasd_device_is_ro()
3431 void dasd_generic_free_discipline(struct dasd_device *device) in dasd_generic_free_discipline() argument
3434 if (device->discipline) { in dasd_generic_free_discipline()
3435 if (device->discipline->uncheck_device) in dasd_generic_free_discipline()
3436 device->discipline->uncheck_device(device); in dasd_generic_free_discipline()
3437 module_put(device->discipline->owner); in dasd_generic_free_discipline()
3438 device->discipline = NULL; in dasd_generic_free_discipline()
3440 if (device->base_discipline) { in dasd_generic_free_discipline()
3441 module_put(device->base_discipline->owner); in dasd_generic_free_discipline()
3442 device->base_discipline = NULL; in dasd_generic_free_discipline()
3453 struct dasd_device *device; in dasd_generic_remove() local
3456 device = dasd_device_from_cdev(cdev); in dasd_generic_remove()
3457 if (IS_ERR(device)) in dasd_generic_remove()
3460 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) && in dasd_generic_remove()
3461 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_remove()
3463 dasd_put_device(device); in dasd_generic_remove()
3471 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_remove()
3474 block = device->block; in dasd_generic_remove()
3475 dasd_delete_device(device); in dasd_generic_remove()
3494 struct dasd_device *device; in dasd_generic_set_online() local
3499 device = dasd_create_device(cdev); in dasd_generic_set_online()
3500 if (IS_ERR(device)) in dasd_generic_set_online()
3501 return PTR_ERR(device); in dasd_generic_set_online()
3504 if (device->features & DASD_FEATURE_USEDIAG) { in dasd_generic_set_online()
3514 dasd_delete_device(device); in dasd_generic_set_online()
3523 dasd_delete_device(device); in dasd_generic_set_online()
3529 dasd_delete_device(device); in dasd_generic_set_online()
3534 dasd_delete_device(device); in dasd_generic_set_online()
3537 device->base_discipline = base_discipline; in dasd_generic_set_online()
3538 device->discipline = discipline; in dasd_generic_set_online()
3541 rc = discipline->check_device(device); in dasd_generic_set_online()
3547 dasd_delete_device(device); in dasd_generic_set_online()
3551 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_generic_set_online()
3552 if (device->state <= DASD_STATE_KNOWN) { in dasd_generic_set_online()
3556 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_online()
3557 if (device->block) in dasd_generic_set_online()
3558 dasd_free_block(device->block); in dasd_generic_set_online()
3559 dasd_delete_device(device); in dasd_generic_set_online()
3564 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_generic_set_online()
3566 dasd_put_device(device); in dasd_generic_set_online()
3573 struct dasd_device *device; in dasd_generic_set_offline() local
3580 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_set_offline()
3581 if (IS_ERR(device)) { in dasd_generic_set_offline()
3583 return PTR_ERR(device); in dasd_generic_set_offline()
3592 if (device->block) { in dasd_generic_set_offline()
3593 max_count = device->block->bdev ? 0 : -1; in dasd_generic_set_offline()
3594 open_count = atomic_read(&device->block->open_count); in dasd_generic_set_offline()
3613 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3614 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3616 &device->flags); in dasd_generic_set_offline()
3622 set_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3629 if (test_and_clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags) && in dasd_generic_set_offline()
3630 !test_and_set_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3639 if (device->block) in dasd_generic_set_offline()
3640 bdev_mark_dead(device->block->bdev, false); in dasd_generic_set_offline()
3641 dasd_schedule_device_bh(device); in dasd_generic_set_offline()
3643 _wait_for_empty_queues(device)); in dasd_generic_set_offline()
3655 if (!test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3659 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3663 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_offline()
3665 block = device->block; in dasd_generic_set_offline()
3666 dasd_delete_device(device); in dasd_generic_set_offline()
3679 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3680 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3682 dasd_put_device(device); in dasd_generic_set_offline()
3688 int dasd_generic_last_path_gone(struct dasd_device *device) in dasd_generic_last_path_gone() argument
3692 dev_warn(&device->cdev->dev, "No operational channel path is left " in dasd_generic_last_path_gone()
3694 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "last path gone"); in dasd_generic_last_path_gone()
3696 dasd_handle_autoquiesce(device, NULL, DASD_EER_NOPATH); in dasd_generic_last_path_gone()
3698 if (device->state < DASD_STATE_BASIC) in dasd_generic_last_path_gone()
3701 list_for_each_entry(cqr, &device->ccw_queue, devlist) in dasd_generic_last_path_gone()
3707 dasd_device_set_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_last_path_gone()
3708 dasd_device_clear_timer(device); in dasd_generic_last_path_gone()
3709 dasd_schedule_device_bh(device); in dasd_generic_last_path_gone()
3714 int dasd_generic_path_operational(struct dasd_device *device) in dasd_generic_path_operational() argument
3716 dev_info(&device->cdev->dev, "A channel path to the device has become " in dasd_generic_path_operational()
3718 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "path operational"); in dasd_generic_path_operational()
3719 dasd_device_remove_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_path_operational()
3720 dasd_schedule_device_bh(device); in dasd_generic_path_operational()
3721 if (device->block) { in dasd_generic_path_operational()
3722 dasd_schedule_block_bh(device->block); in dasd_generic_path_operational()
3723 if (device->block->gdp) in dasd_generic_path_operational()
3724 blk_mq_run_hw_queues(device->block->gdp->queue, true); in dasd_generic_path_operational()
3727 if (!device->stopped) in dasd_generic_path_operational()
3736 struct dasd_device *device; in dasd_generic_notify() local
3739 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_notify()
3740 if (IS_ERR(device)) in dasd_generic_notify()
3747 dasd_path_no_path(device); in dasd_generic_notify()
3748 ret = dasd_generic_last_path_gone(device); in dasd_generic_notify()
3752 if (dasd_path_get_opm(device)) in dasd_generic_notify()
3753 ret = dasd_generic_path_operational(device); in dasd_generic_notify()
3756 dasd_put_device(device); in dasd_generic_notify()
3763 struct dasd_device *device; in dasd_generic_path_event() local
3766 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_path_event()
3767 if (IS_ERR(device)) in dasd_generic_path_event()
3770 oldopm = dasd_path_get_opm(device); in dasd_generic_path_event()
3773 dasd_path_notoper(device, chp); in dasd_generic_path_event()
3776 dasd_path_available(device, chp); in dasd_generic_path_event()
3777 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3780 if (!dasd_path_is_operational(device, chp) && in dasd_generic_path_event()
3781 !dasd_path_need_verify(device, chp)) { in dasd_generic_path_event()
3787 dasd_path_available(device, chp); in dasd_generic_path_event()
3788 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3790 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_generic_path_event()
3792 if (device->discipline->kick_validate) in dasd_generic_path_event()
3793 device->discipline->kick_validate(device); in dasd_generic_path_event()
3796 dasd_path_fcsec_update(device, chp); in dasd_generic_path_event()
3797 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3800 hpfpm = dasd_path_get_hpfpm(device); in dasd_generic_path_event()
3801 ifccpm = dasd_path_get_ifccpm(device); in dasd_generic_path_event()
3802 if (!dasd_path_get_opm(device) && hpfpm) { in dasd_generic_path_event()
3808 if (device->discipline->disable_hpf) in dasd_generic_path_event()
3809 device->discipline->disable_hpf(device); in dasd_generic_path_event()
3810 dasd_device_set_stop_bits(device, DASD_STOPPED_NOT_ACC); in dasd_generic_path_event()
3811 dasd_path_set_tbvpm(device, hpfpm); in dasd_generic_path_event()
3812 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3813 dasd_schedule_requeue(device); in dasd_generic_path_event()
3814 } else if (!dasd_path_get_opm(device) && ifccpm) { in dasd_generic_path_event()
3820 dasd_path_set_tbvpm(device, ifccpm); in dasd_generic_path_event()
3821 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3823 if (oldopm && !dasd_path_get_opm(device) && !hpfpm && !ifccpm) { in dasd_generic_path_event()
3824 dev_warn(&device->cdev->dev, in dasd_generic_path_event()
3826 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_generic_path_event()
3829 dasd_handle_autoquiesce(device, NULL, DASD_EER_NOPATH); in dasd_generic_path_event()
3830 dasd_device_set_stop_bits(device, in dasd_generic_path_event()
3833 dasd_put_device(device); in dasd_generic_path_event()
3837 int dasd_generic_verify_path(struct dasd_device *device, __u8 lpm) in dasd_generic_verify_path() argument
3839 if (!dasd_path_get_opm(device) && lpm) { in dasd_generic_verify_path()
3840 dasd_path_set_opm(device, lpm); in dasd_generic_verify_path()
3841 dasd_generic_path_operational(device); in dasd_generic_verify_path()
3843 dasd_path_add_opm(device, lpm); in dasd_generic_verify_path()
3848 void dasd_generic_space_exhaust(struct dasd_device *device, in dasd_generic_space_exhaust() argument
3852 dasd_handle_autoquiesce(device, NULL, DASD_EER_NOSPC); in dasd_generic_space_exhaust()
3854 if (device->state < DASD_STATE_BASIC) in dasd_generic_space_exhaust()
3862 dasd_device_set_stop_bits(device, DASD_STOPPED_NOSPC); in dasd_generic_space_exhaust()
3863 dasd_device_clear_timer(device); in dasd_generic_space_exhaust()
3864 dasd_schedule_device_bh(device); in dasd_generic_space_exhaust()
3868 void dasd_generic_space_avail(struct dasd_device *device) in dasd_generic_space_avail() argument
3870 dev_info(&device->cdev->dev, "Extent pool space is available\n"); in dasd_generic_space_avail()
3871 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "space available"); in dasd_generic_space_avail()
3873 dasd_device_remove_stop_bits(device, DASD_STOPPED_NOSPC); in dasd_generic_space_avail()
3874 dasd_schedule_device_bh(device); in dasd_generic_space_avail()
3876 if (device->block) { in dasd_generic_space_avail()
3877 dasd_schedule_block_bh(device->block); in dasd_generic_space_avail()
3878 if (device->block->gdp) in dasd_generic_space_avail()
3879 blk_mq_run_hw_queues(device->block->gdp->queue, true); in dasd_generic_space_avail()
3881 if (!device->stopped) in dasd_generic_space_avail()
3889 int dasd_generic_requeue_all_requests(struct dasd_device *device) in dasd_generic_requeue_all_requests() argument
3891 struct dasd_block *block = device->block; in dasd_generic_requeue_all_requests()
3921 dasd_schedule_device_bh(device); in dasd_generic_requeue_all_requests()
3928 struct dasd_device *device = container_of(work, struct dasd_device, in do_requeue_requests() local
3930 dasd_generic_requeue_all_requests(device); in do_requeue_requests()
3931 dasd_device_remove_stop_bits(device, DASD_STOPPED_NOT_ACC); in do_requeue_requests()
3932 if (device->block) in do_requeue_requests()
3933 dasd_schedule_block_bh(device->block); in do_requeue_requests()
3934 dasd_put_device(device); in do_requeue_requests()
3937 void dasd_schedule_requeue(struct dasd_device *device) in dasd_schedule_requeue() argument
3939 dasd_get_device(device); in dasd_schedule_requeue()
3941 if (!schedule_work(&device->requeue_requests)) in dasd_schedule_requeue()
3942 dasd_put_device(device); in dasd_schedule_requeue()
3946 static int dasd_handle_autoquiesce(struct dasd_device *device, in dasd_handle_autoquiesce() argument
3951 if (dasd_eer_enabled(device)) in dasd_handle_autoquiesce()
3952 dasd_eer_write(device, cqr, reason); in dasd_handle_autoquiesce()
3954 if (!test_bit(reason, &device->aq_mask)) in dasd_handle_autoquiesce()
3958 if (dasd_eer_enabled(device)) in dasd_handle_autoquiesce()
3959 dasd_eer_write(device, NULL, DASD_EER_AUTOQUIESCE); in dasd_handle_autoquiesce()
3962 dev_name(&device->cdev->dev)); in dasd_handle_autoquiesce()
3963 dasd_device_set_stop_bits(device, DASD_STOPPED_QUIESCE); in dasd_handle_autoquiesce()
3965 if (device->features & DASD_FEATURE_REQUEUEQUIESCE) in dasd_handle_autoquiesce()
3966 dasd_schedule_requeue(device); in dasd_handle_autoquiesce()
3971 static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, in dasd_generic_build_rdc() argument
3978 cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device, in dasd_generic_build_rdc()
3983 dev_err(&device->cdev->dev, in dasd_generic_build_rdc()
3994 cqr->startdev = device; in dasd_generic_build_rdc()
3995 cqr->memdev = device; in dasd_generic_build_rdc()
4004 int dasd_generic_read_dev_chars(struct dasd_device *device, int magic, in dasd_generic_read_dev_chars() argument
4010 cqr = dasd_generic_build_rdc(device, rdc_buffer_size, magic); in dasd_generic_read_dev_chars()
4057 struct dasd_device *device; in dasd_generic_shutdown() local
4059 device = dasd_device_from_cdev(cdev); in dasd_generic_shutdown()
4060 if (IS_ERR(device)) in dasd_generic_shutdown()
4063 if (device->block) in dasd_generic_shutdown()
4064 dasd_schedule_block_bh(device->block); in dasd_generic_shutdown()
4066 dasd_schedule_device_bh(device); in dasd_generic_shutdown()
4068 wait_event(shutdown_waitq, _wait_for_empty_queues(device)); in dasd_generic_shutdown()