Lines Matching refs:device
92 struct dasd_device *device; in dasd_alloc_device() local
94 device = kzalloc(sizeof(struct dasd_device), GFP_ATOMIC); in dasd_alloc_device()
95 if (!device) in dasd_alloc_device()
99 device->ccw_mem = (void *) __get_free_pages(GFP_ATOMIC | GFP_DMA, 1); in dasd_alloc_device()
100 if (!device->ccw_mem) { in dasd_alloc_device()
101 kfree(device); in dasd_alloc_device()
105 device->erp_mem = (void *) get_zeroed_page(GFP_ATOMIC | GFP_DMA); in dasd_alloc_device()
106 if (!device->erp_mem) { in dasd_alloc_device()
107 free_pages((unsigned long) device->ccw_mem, 1); in dasd_alloc_device()
108 kfree(device); in dasd_alloc_device()
112 dasd_init_chunklist(&device->ccw_chunks, device->ccw_mem, PAGE_SIZE*2); in dasd_alloc_device()
113 dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE); in dasd_alloc_device()
114 spin_lock_init(&device->mem_lock); in dasd_alloc_device()
115 atomic_set(&device->tasklet_scheduled, 0); in dasd_alloc_device()
116 tasklet_init(&device->tasklet, in dasd_alloc_device()
118 (unsigned long) device); in dasd_alloc_device()
119 INIT_LIST_HEAD(&device->ccw_queue); in dasd_alloc_device()
120 init_timer(&device->timer); in dasd_alloc_device()
121 device->timer.function = dasd_device_timeout; in dasd_alloc_device()
122 device->timer.data = (unsigned long) device; in dasd_alloc_device()
123 INIT_WORK(&device->kick_work, do_kick_device); in dasd_alloc_device()
124 INIT_WORK(&device->restore_device, do_restore_device); in dasd_alloc_device()
125 INIT_WORK(&device->reload_device, do_reload_device); in dasd_alloc_device()
126 device->state = DASD_STATE_NEW; in dasd_alloc_device()
127 device->target = DASD_STATE_NEW; in dasd_alloc_device()
128 mutex_init(&device->state_mutex); in dasd_alloc_device()
129 spin_lock_init(&device->profile.lock); in dasd_alloc_device()
130 return device; in dasd_alloc_device()
136 void dasd_free_device(struct dasd_device *device) in dasd_free_device() argument
138 kfree(device->private); in dasd_free_device()
139 free_page((unsigned long) device->erp_mem); in dasd_free_device()
140 free_pages((unsigned long) device->ccw_mem, 1); in dasd_free_device()
141 kfree(device); in dasd_free_device()
185 static int dasd_state_new_to_known(struct dasd_device *device) in dasd_state_new_to_known() argument
193 dasd_get_device(device); in dasd_state_new_to_known()
195 if (device->block) { in dasd_state_new_to_known()
196 rc = dasd_alloc_queue(device->block); in dasd_state_new_to_known()
198 dasd_put_device(device); in dasd_state_new_to_known()
202 device->state = DASD_STATE_KNOWN; in dasd_state_new_to_known()
209 static int dasd_state_known_to_new(struct dasd_device *device) in dasd_state_known_to_new() argument
212 dasd_eer_disable(device); in dasd_state_known_to_new()
214 if (device->discipline) { in dasd_state_known_to_new()
215 if (device->discipline->uncheck_device) in dasd_state_known_to_new()
216 device->discipline->uncheck_device(device); in dasd_state_known_to_new()
217 module_put(device->discipline->owner); in dasd_state_known_to_new()
219 device->discipline = NULL; in dasd_state_known_to_new()
220 if (device->base_discipline) in dasd_state_known_to_new()
221 module_put(device->base_discipline->owner); in dasd_state_known_to_new()
222 device->base_discipline = NULL; in dasd_state_known_to_new()
223 device->state = DASD_STATE_NEW; in dasd_state_known_to_new()
225 if (device->block) in dasd_state_known_to_new()
226 dasd_free_queue(device->block); in dasd_state_known_to_new()
229 dasd_put_device(device); in dasd_state_known_to_new()
249 static int dasd_state_known_to_basic(struct dasd_device *device) in dasd_state_known_to_basic() argument
251 struct dasd_block *block = device->block; in dasd_state_known_to_basic()
264 dasd_profile_on(&device->block->profile); in dasd_state_known_to_basic()
266 device->debugfs_dentry = in dasd_state_known_to_basic()
267 dasd_debugfs_setup(dev_name(&device->cdev->dev), in dasd_state_known_to_basic()
269 dasd_profile_init(&device->profile, device->debugfs_dentry); in dasd_state_known_to_basic()
272 device->debug_area = debug_register(dev_name(&device->cdev->dev), 4, 1, in dasd_state_known_to_basic()
274 debug_register_view(device->debug_area, &debug_sprintf_view); in dasd_state_known_to_basic()
275 debug_set_level(device->debug_area, DBF_WARNING); in dasd_state_known_to_basic()
276 DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created"); in dasd_state_known_to_basic()
278 device->state = DASD_STATE_BASIC; in dasd_state_known_to_basic()
286 static int dasd_state_basic_to_known(struct dasd_device *device) in dasd_state_basic_to_known() argument
290 if (device->discipline->basic_to_known) { in dasd_state_basic_to_known()
291 rc = device->discipline->basic_to_known(device); in dasd_state_basic_to_known()
296 if (device->block) { in dasd_state_basic_to_known()
297 dasd_profile_exit(&device->block->profile); in dasd_state_basic_to_known()
298 debugfs_remove(device->block->debugfs_dentry); in dasd_state_basic_to_known()
299 dasd_gendisk_free(device->block); in dasd_state_basic_to_known()
300 dasd_block_clear_timer(device->block); in dasd_state_basic_to_known()
302 rc = dasd_flush_device_queue(device); in dasd_state_basic_to_known()
305 dasd_device_clear_timer(device); in dasd_state_basic_to_known()
306 dasd_profile_exit(&device->profile); in dasd_state_basic_to_known()
307 debugfs_remove(device->debugfs_dentry); in dasd_state_basic_to_known()
308 DBF_DEV_EVENT(DBF_EMERG, device, "%p debug area deleted", device); in dasd_state_basic_to_known()
309 if (device->debug_area != NULL) { in dasd_state_basic_to_known()
310 debug_unregister(device->debug_area); in dasd_state_basic_to_known()
311 device->debug_area = NULL; in dasd_state_basic_to_known()
313 device->state = DASD_STATE_KNOWN; in dasd_state_basic_to_known()
331 static int dasd_state_basic_to_ready(struct dasd_device *device) in dasd_state_basic_to_ready() argument
337 block = device->block; in dasd_state_basic_to_ready()
344 device->state = DASD_STATE_UNFMT; in dasd_state_basic_to_ready()
352 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
355 device->state = DASD_STATE_BASIC; in dasd_state_basic_to_ready()
359 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
362 if (device->discipline->basic_to_ready) in dasd_state_basic_to_ready()
363 rc = device->discipline->basic_to_ready(device); in dasd_state_basic_to_ready()
368 int _wait_for_empty_queues(struct dasd_device *device) in _wait_for_empty_queues() argument
370 if (device->block) in _wait_for_empty_queues()
371 return list_empty(&device->ccw_queue) && in _wait_for_empty_queues()
372 list_empty(&device->block->ccw_queue); in _wait_for_empty_queues()
374 return list_empty(&device->ccw_queue); in _wait_for_empty_queues()
382 static int dasd_state_ready_to_basic(struct dasd_device *device) in dasd_state_ready_to_basic() argument
386 device->state = DASD_STATE_BASIC; in dasd_state_ready_to_basic()
387 if (device->block) { in dasd_state_ready_to_basic()
388 struct dasd_block *block = device->block; in dasd_state_ready_to_basic()
391 device->state = DASD_STATE_READY; in dasd_state_ready_to_basic()
406 static int dasd_state_unfmt_to_basic(struct dasd_device *device) in dasd_state_unfmt_to_basic() argument
408 device->state = DASD_STATE_BASIC; in dasd_state_unfmt_to_basic()
418 dasd_state_ready_to_online(struct dasd_device * device) in dasd_state_ready_to_online() argument
424 device->state = DASD_STATE_ONLINE; in dasd_state_ready_to_online()
425 if (device->block) { in dasd_state_ready_to_online()
426 dasd_schedule_block_bh(device->block); in dasd_state_ready_to_online()
427 if ((device->features & DASD_FEATURE_USERAW)) { in dasd_state_ready_to_online()
428 disk = device->block->gdp; in dasd_state_ready_to_online()
432 disk = device->block->bdev->bd_disk; in dasd_state_ready_to_online()
444 static int dasd_state_online_to_ready(struct dasd_device *device) in dasd_state_online_to_ready() argument
451 if (device->discipline->online_to_ready) { in dasd_state_online_to_ready()
452 rc = device->discipline->online_to_ready(device); in dasd_state_online_to_ready()
457 device->state = DASD_STATE_READY; in dasd_state_online_to_ready()
458 if (device->block && !(device->features & DASD_FEATURE_USERAW)) { in dasd_state_online_to_ready()
459 disk = device->block->bdev->bd_disk; in dasd_state_online_to_ready()
471 static int dasd_increase_state(struct dasd_device *device) in dasd_increase_state() argument
476 if (device->state == DASD_STATE_NEW && in dasd_increase_state()
477 device->target >= DASD_STATE_KNOWN) in dasd_increase_state()
478 rc = dasd_state_new_to_known(device); in dasd_increase_state()
481 device->state == DASD_STATE_KNOWN && in dasd_increase_state()
482 device->target >= DASD_STATE_BASIC) in dasd_increase_state()
483 rc = dasd_state_known_to_basic(device); in dasd_increase_state()
486 device->state == DASD_STATE_BASIC && in dasd_increase_state()
487 device->target >= DASD_STATE_READY) in dasd_increase_state()
488 rc = dasd_state_basic_to_ready(device); in dasd_increase_state()
491 device->state == DASD_STATE_UNFMT && in dasd_increase_state()
492 device->target > DASD_STATE_UNFMT) in dasd_increase_state()
496 device->state == DASD_STATE_READY && in dasd_increase_state()
497 device->target >= DASD_STATE_ONLINE) in dasd_increase_state()
498 rc = dasd_state_ready_to_online(device); in dasd_increase_state()
506 static int dasd_decrease_state(struct dasd_device *device) in dasd_decrease_state() argument
511 if (device->state == DASD_STATE_ONLINE && in dasd_decrease_state()
512 device->target <= DASD_STATE_READY) in dasd_decrease_state()
513 rc = dasd_state_online_to_ready(device); in dasd_decrease_state()
516 device->state == DASD_STATE_READY && in dasd_decrease_state()
517 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
518 rc = dasd_state_ready_to_basic(device); in dasd_decrease_state()
521 device->state == DASD_STATE_UNFMT && in dasd_decrease_state()
522 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
523 rc = dasd_state_unfmt_to_basic(device); in dasd_decrease_state()
526 device->state == DASD_STATE_BASIC && in dasd_decrease_state()
527 device->target <= DASD_STATE_KNOWN) in dasd_decrease_state()
528 rc = dasd_state_basic_to_known(device); in dasd_decrease_state()
531 device->state == DASD_STATE_KNOWN && in dasd_decrease_state()
532 device->target <= DASD_STATE_NEW) in dasd_decrease_state()
533 rc = dasd_state_known_to_new(device); in dasd_decrease_state()
541 static void dasd_change_state(struct dasd_device *device) in dasd_change_state() argument
545 if (device->state == device->target) in dasd_change_state()
548 if (device->state < device->target) in dasd_change_state()
549 rc = dasd_increase_state(device); in dasd_change_state()
551 rc = dasd_decrease_state(device); in dasd_change_state()
555 device->target = device->state; in dasd_change_state()
558 kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); in dasd_change_state()
560 if (device->state == device->target) in dasd_change_state()
572 struct dasd_device *device = container_of(work, struct dasd_device, kick_work); in do_kick_device() local
573 mutex_lock(&device->state_mutex); in do_kick_device()
574 dasd_change_state(device); in do_kick_device()
575 mutex_unlock(&device->state_mutex); in do_kick_device()
576 dasd_schedule_device_bh(device); in do_kick_device()
577 dasd_put_device(device); in do_kick_device()
580 void dasd_kick_device(struct dasd_device *device) in dasd_kick_device() argument
582 dasd_get_device(device); in dasd_kick_device()
584 if (!schedule_work(&device->kick_work)) in dasd_kick_device()
585 dasd_put_device(device); in dasd_kick_device()
595 struct dasd_device *device = container_of(work, struct dasd_device, in do_reload_device() local
597 device->discipline->reload(device); in do_reload_device()
598 dasd_put_device(device); in do_reload_device()
601 void dasd_reload_device(struct dasd_device *device) in dasd_reload_device() argument
603 dasd_get_device(device); in dasd_reload_device()
605 if (!schedule_work(&device->reload_device)) in dasd_reload_device()
606 dasd_put_device(device); in dasd_reload_device()
616 struct dasd_device *device = container_of(work, struct dasd_device, in do_restore_device() local
618 device->cdev->drv->restore(device->cdev); in do_restore_device()
619 dasd_put_device(device); in do_restore_device()
622 void dasd_restore_device(struct dasd_device *device) in dasd_restore_device() argument
624 dasd_get_device(device); in dasd_restore_device()
626 if (!schedule_work(&device->restore_device)) in dasd_restore_device()
627 dasd_put_device(device); in dasd_restore_device()
633 void dasd_set_target_state(struct dasd_device *device, int target) in dasd_set_target_state() argument
635 dasd_get_device(device); in dasd_set_target_state()
636 mutex_lock(&device->state_mutex); in dasd_set_target_state()
640 if (device->target != target) { in dasd_set_target_state()
641 if (device->state == target) in dasd_set_target_state()
643 device->target = target; in dasd_set_target_state()
645 if (device->state != device->target) in dasd_set_target_state()
646 dasd_change_state(device); in dasd_set_target_state()
647 mutex_unlock(&device->state_mutex); in dasd_set_target_state()
648 dasd_put_device(device); in dasd_set_target_state()
655 static inline int _wait_for_device(struct dasd_device *device) in _wait_for_device() argument
657 return (device->state == device->target); in _wait_for_device()
660 void dasd_enable_device(struct dasd_device *device) in dasd_enable_device() argument
662 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_enable_device()
663 if (device->state <= DASD_STATE_KNOWN) in dasd_enable_device()
665 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_enable_device()
667 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_enable_device()
669 dasd_reload_device(device); in dasd_enable_device()
670 if (device->discipline->kick_validate) in dasd_enable_device()
671 device->discipline->kick_validate(device); in dasd_enable_device()
696 struct dasd_device *device; in dasd_profile_start() local
726 device = cqr->startdev; in dasd_profile_start()
727 if (device->profile.data) { in dasd_profile_start()
729 list_for_each(l, &device->ccw_queue) in dasd_profile_start()
733 spin_lock(&device->profile.lock); in dasd_profile_start()
734 if (device->profile.data) { in dasd_profile_start()
735 device->profile.data->dasd_io_nr_req[counter]++; in dasd_profile_start()
737 device->profile.data->dasd_read_nr_req[counter]++; in dasd_profile_start()
739 spin_unlock(&device->profile.lock); in dasd_profile_start()
806 struct dasd_device *device; in dasd_profile_end() local
810 device = cqr->startdev; in dasd_profile_end()
813 device->profile.data)) in dasd_profile_end()
861 spin_lock(&device->profile.lock); in dasd_profile_end()
862 if (device->profile.data) in dasd_profile_end()
863 dasd_profile_end_add_data(device->profile.data, in dasd_profile_end()
871 spin_unlock(&device->profile.lock); in dasd_profile_end()
1162 struct dasd_device *device) in dasd_kmalloc_request() argument
1193 dasd_get_device(device); in dasd_kmalloc_request()
1200 struct dasd_device *device) in dasd_smalloc_request() argument
1212 spin_lock_irqsave(&device->mem_lock, flags); in dasd_smalloc_request()
1214 dasd_alloc_chunk(&device->ccw_chunks, size); in dasd_smalloc_request()
1215 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_smalloc_request()
1233 dasd_get_device(device); in dasd_smalloc_request()
1243 void dasd_kfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_kfree_request() argument
1255 dasd_put_device(device); in dasd_kfree_request()
1259 void dasd_sfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_sfree_request() argument
1263 spin_lock_irqsave(&device->mem_lock, flags); in dasd_sfree_request()
1264 dasd_free_chunk(&device->ccw_chunks, cqr); in dasd_sfree_request()
1265 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_sfree_request()
1266 dasd_put_device(device); in dasd_sfree_request()
1275 struct dasd_device *device; in dasd_check_cqr() local
1279 device = cqr->startdev; in dasd_check_cqr()
1280 if (strncmp((char *) &cqr->magic, device->discipline->ebcname, 4)) { in dasd_check_cqr()
1281 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_check_cqr()
1285 *(unsigned int *) device->discipline->name); in dasd_check_cqr()
1299 struct dasd_device *device; in dasd_term_IO() local
1308 device = (struct dasd_device *) cqr->startdev; in dasd_term_IO()
1310 rc = ccw_device_clear(device->cdev, (long) cqr); in dasd_term_IO()
1316 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_term_IO()
1321 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1325 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1338 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1344 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1350 dev_err(&device->cdev->dev, "An error occurred in the " in dasd_term_IO()
1357 dasd_schedule_device_bh(device); in dasd_term_IO()
1368 struct dasd_device *device; in dasd_start_IO() local
1378 device = (struct dasd_device *) cqr->startdev; in dasd_start_IO()
1381 test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags)) && in dasd_start_IO()
1383 DBF_DEV_EVENT(DBF_DEBUG, device, "start_IO: return request %p " in dasd_start_IO()
1392 dev_err(&device->cdev->dev, "An error occurred in the DASD " in dasd_start_IO()
1401 cqr->lpm &= device->path_data.opm; in dasd_start_IO()
1403 cqr->lpm = device->path_data.opm; in dasd_start_IO()
1406 rc = ccw_device_tm_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1409 rc = ccw_device_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1417 DBF_DEV_EVENT(DBF_WARNING, device, "%s", 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 != device->path_data.opm) { in dasd_start_IO()
1437 cqr->lpm = device->path_data.opm; 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 device->path_data.opm = 0; in dasd_start_IO()
1447 device->path_data.ppm = 0; in dasd_start_IO()
1448 device->path_data.npm = 0; in dasd_start_IO()
1449 device->path_data.tbvpm = in dasd_start_IO()
1450 ccw_device_get_path_mask(device->cdev); in dasd_start_IO()
1454 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1458 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 = (struct dasd_device *) ptr; 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()
1583 struct dasd_device *device; in dasd_int_handler() local
1612 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1613 if (IS_ERR(device)) in dasd_int_handler()
1616 if (device->discipline == dasd_diag_discipline_pointer) { in dasd_int_handler()
1617 dasd_put_device(device); in dasd_int_handler()
1620 device->discipline->dump_sense_dbf(device, irb, "int"); in dasd_int_handler()
1621 if (device->features & DASD_FEATURE_ERPLOG) in dasd_int_handler()
1622 device->discipline->dump_sense(device, cqr, irb); in dasd_int_handler()
1623 device->discipline->check_for_device_change(device, cqr, irb); in dasd_int_handler()
1624 dasd_put_device(device); in dasd_int_handler()
1629 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1630 device->discipline->check_attention(device, irb->esw.esw1.lpum); in dasd_int_handler()
1631 dasd_put_device(device); in dasd_int_handler()
1637 device = (struct dasd_device *) cqr->startdev; in dasd_int_handler()
1638 if (!device || in dasd_int_handler()
1639 strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { in dasd_int_handler()
1649 dasd_device_clear_timer(device); in dasd_int_handler()
1651 dasd_schedule_device_bh(device); in dasd_int_handler()
1657 DBF_DEV_EVENT(DBF_DEBUG, device, "invalid status: bus_id %s, " in dasd_int_handler()
1670 if (cqr->devlist.next != &device->ccw_queue) { in dasd_int_handler()
1681 if (cqr->lpm == device->path_data.opm) in dasd_int_handler()
1682 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_int_handler()
1687 cqr->lpm = device->path_data.opm; in dasd_int_handler()
1694 (!device->stopped)) { in dasd_int_handler()
1695 if (device->discipline->start_IO(next) == 0) in dasd_int_handler()
1699 dasd_device_set_timer(device, expires); in dasd_int_handler()
1701 dasd_device_clear_timer(device); in dasd_int_handler()
1702 dasd_schedule_device_bh(device); in dasd_int_handler()
1708 struct dasd_device *device; in dasd_generic_uc_handler() local
1710 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_uc_handler()
1712 if (IS_ERR(device)) in dasd_generic_uc_handler()
1714 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || in dasd_generic_uc_handler()
1715 device->state != device->target || in dasd_generic_uc_handler()
1716 !device->discipline->check_for_device_change){ in dasd_generic_uc_handler()
1717 dasd_put_device(device); in dasd_generic_uc_handler()
1720 if (device->discipline->dump_sense_dbf) in dasd_generic_uc_handler()
1721 device->discipline->dump_sense_dbf(device, irb, "uc"); in dasd_generic_uc_handler()
1722 device->discipline->check_for_device_change(device, NULL, irb); in dasd_generic_uc_handler()
1723 dasd_put_device(device); in dasd_generic_uc_handler()
1733 static void __dasd_device_recovery(struct dasd_device *device, in __dasd_device_recovery() argument
1745 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_recovery()
1758 static void __dasd_device_process_ccw_queue(struct dasd_device *device, in __dasd_device_process_ccw_queue() argument
1765 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_process_ccw_queue()
1774 __dasd_device_recovery(device, cqr); in __dasd_device_process_ccw_queue()
1785 static void __dasd_device_process_final_queue(struct dasd_device *device, in __dasd_device_process_final_queue() argument
1816 dev_err(&device->cdev->dev, in __dasd_device_process_final_queue()
1832 static void __dasd_device_check_expire(struct dasd_device *device) in __dasd_device_check_expire() argument
1836 if (list_empty(&device->ccw_queue)) in __dasd_device_check_expire()
1838 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_check_expire()
1841 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_check_expire()
1848 if (device->discipline->term_IO(cqr) != 0) { in __dasd_device_check_expire()
1850 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
1855 dasd_device_set_timer(device, 5*HZ); in __dasd_device_check_expire()
1857 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
1868 static int __dasd_device_is_unusable(struct dasd_device *device, in __dasd_device_is_unusable() argument
1873 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in __dasd_device_is_unusable()
1877 if (device->stopped) { in __dasd_device_is_unusable()
1878 if (device->stopped & mask) { in __dasd_device_is_unusable()
1896 static void __dasd_device_start_head(struct dasd_device *device) in __dasd_device_start_head() argument
1901 if (list_empty(&device->ccw_queue)) in __dasd_device_start_head()
1903 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_start_head()
1907 if (__dasd_device_is_unusable(device, cqr)) { in __dasd_device_start_head()
1910 dasd_schedule_device_bh(device); in __dasd_device_start_head()
1914 rc = device->discipline->start_IO(cqr); in __dasd_device_start_head()
1916 dasd_device_set_timer(device, cqr->expires); in __dasd_device_start_head()
1918 dasd_schedule_device_bh(device); in __dasd_device_start_head()
1921 dasd_device_set_timer(device, 50); in __dasd_device_start_head()
1924 static void __dasd_device_check_path_events(struct dasd_device *device) in __dasd_device_check_path_events() argument
1928 if (device->path_data.tbvpm) { in __dasd_device_check_path_events()
1929 if (device->stopped & ~(DASD_STOPPED_DC_WAIT | in __dasd_device_check_path_events()
1932 rc = device->discipline->verify_path( in __dasd_device_check_path_events()
1933 device, device->path_data.tbvpm); in __dasd_device_check_path_events()
1935 dasd_device_set_timer(device, 50); in __dasd_device_check_path_events()
1937 device->path_data.tbvpm = 0; in __dasd_device_check_path_events()
1951 int dasd_flush_device_queue(struct dasd_device *device) in dasd_flush_device_queue() argument
1958 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
1960 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_flush_device_queue()
1964 rc = device->discipline->term_IO(cqr); in dasd_flush_device_queue()
1967 dev_err(&device->cdev->dev, in dasd_flush_device_queue()
1984 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
1997 __dasd_device_process_final_queue(device, &flush_queue); in dasd_flush_device_queue()
2005 static void dasd_device_tasklet(struct dasd_device *device) in dasd_device_tasklet() argument
2009 atomic_set (&device->tasklet_scheduled, 0); in dasd_device_tasklet()
2011 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2013 __dasd_device_check_expire(device); in dasd_device_tasklet()
2015 __dasd_device_process_ccw_queue(device, &final_queue); in dasd_device_tasklet()
2016 __dasd_device_check_path_events(device); in dasd_device_tasklet()
2017 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2019 __dasd_device_process_final_queue(device, &final_queue); in dasd_device_tasklet()
2020 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2022 __dasd_device_start_head(device); in dasd_device_tasklet()
2023 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2026 dasd_put_device(device); in dasd_device_tasklet()
2032 void dasd_schedule_device_bh(struct dasd_device *device) in dasd_schedule_device_bh() argument
2035 if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) in dasd_schedule_device_bh()
2037 dasd_get_device(device); in dasd_schedule_device_bh()
2038 tasklet_hi_schedule(&device->tasklet); in dasd_schedule_device_bh()
2042 void dasd_device_set_stop_bits(struct dasd_device *device, int bits) in dasd_device_set_stop_bits() argument
2044 device->stopped |= bits; in dasd_device_set_stop_bits()
2048 void dasd_device_remove_stop_bits(struct dasd_device *device, int bits) in dasd_device_remove_stop_bits() argument
2050 device->stopped &= ~bits; in dasd_device_remove_stop_bits()
2051 if (!device->stopped) in dasd_device_remove_stop_bits()
2062 struct dasd_device *device; in dasd_add_request_head() local
2065 device = cqr->startdev; in dasd_add_request_head()
2066 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2068 list_add(&cqr->devlist, &device->ccw_queue); in dasd_add_request_head()
2070 dasd_schedule_device_bh(device); in dasd_add_request_head()
2071 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2081 struct dasd_device *device; in dasd_add_request_tail() local
2084 device = cqr->startdev; in dasd_add_request_tail()
2085 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2087 list_add_tail(&cqr->devlist, &device->ccw_queue); in dasd_add_request_tail()
2089 dasd_schedule_device_bh(device); in dasd_add_request_tail()
2090 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2108 struct dasd_device *device; in _wait_for_wakeup() local
2111 device = cqr->startdev; in _wait_for_wakeup()
2112 spin_lock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2114 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2123 struct dasd_device *device; in __dasd_sleep_on_erp() local
2128 device = cqr->startdev; in __dasd_sleep_on_erp()
2131 device->discipline->handle_terminated_request(cqr); in __dasd_sleep_on_erp()
2135 erp_fn = device->discipline->erp_action(cqr); in __dasd_sleep_on_erp()
2142 __dasd_process_erp(device, cqr); in __dasd_sleep_on_erp()
2162 struct dasd_device *device; in _dasd_sleep_on() local
2169 device = maincqr->startdev; in _dasd_sleep_on()
2179 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on()
2186 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on()
2188 (!dasd_eer_enabled(device))) { in _dasd_sleep_on()
2200 generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2207 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2257 struct dasd_device *device; in _dasd_sleep_on_queue() local
2263 device = cqr->startdev; in _dasd_sleep_on_queue()
2267 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on_queue()
2274 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on_queue()
2276 !dasd_eer_enabled(device)) { in _dasd_sleep_on_queue()
2285 generic_waitq, !device->stopped); in _dasd_sleep_on_queue()
2292 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on_queue()
2358 static inline int _dasd_term_running_cqr(struct dasd_device *device) in _dasd_term_running_cqr() argument
2363 if (list_empty(&device->ccw_queue)) in _dasd_term_running_cqr()
2365 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in _dasd_term_running_cqr()
2366 rc = device->discipline->term_IO(cqr); in _dasd_term_running_cqr()
2379 struct dasd_device *device; in dasd_sleep_on_immediatly() local
2382 device = cqr->startdev; in dasd_sleep_on_immediatly()
2383 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in dasd_sleep_on_immediatly()
2389 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2390 rc = _dasd_term_running_cqr(device); in dasd_sleep_on_immediatly()
2392 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2402 list_add(&cqr->devlist, device->ccw_queue.next); in dasd_sleep_on_immediatly()
2405 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2407 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2419 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2420 if (device->block) in dasd_sleep_on_immediatly()
2421 dasd_schedule_block_bh(device->block); in dasd_sleep_on_immediatly()
2438 struct dasd_device *device = cqr->startdev; in dasd_cancel_req() local
2443 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2453 rc = device->discipline->term_IO(cqr); in dasd_cancel_req()
2455 dev_err(&device->cdev->dev, in dasd_cancel_req()
2465 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2466 dasd_schedule_device_bh(device); in dasd_cancel_req()
2517 static void __dasd_process_erp(struct dasd_device *device, in __dasd_process_erp() argument
2523 DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful"); in __dasd_process_erp()
2525 dev_err(&device->cdev->dev, "ERP failed for the DASD\n"); in __dasd_process_erp()
2526 erp_fn = device->discipline->erp_postaction(cqr); in __dasd_process_erp()
2937 struct dasd_device *device; in dasd_times_out() local
2943 device = cqr->startdev ? cqr->startdev : block->base; in dasd_times_out()
2944 if (!device->blk_timeout) in dasd_times_out()
2946 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_times_out()
2951 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2955 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2960 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2975 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2977 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2991 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3201 int dasd_device_is_ro(struct dasd_device *device) in dasd_device_is_ro() argument
3209 ccw_device_get_id(device->cdev, &dev_id); in dasd_device_is_ro()
3271 struct dasd_device *device; in dasd_generic_remove() local
3276 device = dasd_device_from_cdev(cdev); in dasd_generic_remove()
3277 if (IS_ERR(device)) { in dasd_generic_remove()
3281 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) && in dasd_generic_remove()
3282 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_remove()
3284 dasd_put_device(device); in dasd_generic_remove()
3293 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_remove()
3295 block = device->block; in dasd_generic_remove()
3296 dasd_delete_device(device); in dasd_generic_remove()
3317 struct dasd_device *device; in dasd_generic_set_online() local
3322 device = dasd_create_device(cdev); in dasd_generic_set_online()
3323 if (IS_ERR(device)) in dasd_generic_set_online()
3324 return PTR_ERR(device); in dasd_generic_set_online()
3327 if (device->features & DASD_FEATURE_USEDIAG) { in dasd_generic_set_online()
3337 dasd_delete_device(device); in dasd_generic_set_online()
3346 dasd_delete_device(device); in dasd_generic_set_online()
3352 dasd_delete_device(device); in dasd_generic_set_online()
3357 dasd_delete_device(device); in dasd_generic_set_online()
3360 device->base_discipline = base_discipline; in dasd_generic_set_online()
3361 device->discipline = discipline; in dasd_generic_set_online()
3364 rc = discipline->check_device(device); in dasd_generic_set_online()
3370 dasd_delete_device(device); in dasd_generic_set_online()
3374 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_generic_set_online()
3375 if (device->state <= DASD_STATE_KNOWN) { in dasd_generic_set_online()
3379 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_online()
3380 if (device->block) in dasd_generic_set_online()
3381 dasd_free_block(device->block); in dasd_generic_set_online()
3382 dasd_delete_device(device); in dasd_generic_set_online()
3387 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_generic_set_online()
3389 dasd_put_device(device); in dasd_generic_set_online()
3396 struct dasd_device *device; in dasd_generic_set_offline() local
3401 device = dasd_device_from_cdev(cdev); in dasd_generic_set_offline()
3402 if (IS_ERR(device)) in dasd_generic_set_offline()
3403 return PTR_ERR(device); in dasd_generic_set_offline()
3411 if (device->block) { in dasd_generic_set_offline()
3412 max_count = device->block->bdev ? 0 : -1; in dasd_generic_set_offline()
3413 open_count = atomic_read(&device->block->open_count); in dasd_generic_set_offline()
3421 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3422 dasd_put_device(device); in dasd_generic_set_offline()
3427 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3433 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3435 dasd_put_device(device); in dasd_generic_set_offline()
3438 clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags); in dasd_generic_set_offline()
3441 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3443 dasd_put_device(device); in dasd_generic_set_offline()
3452 if (test_and_clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags) && in dasd_generic_set_offline()
3453 !test_and_set_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3461 rc = fsync_bdev(device->block->bdev); in dasd_generic_set_offline()
3466 dasd_schedule_device_bh(device); in dasd_generic_set_offline()
3468 _wait_for_empty_queues(device)); in dasd_generic_set_offline()
3473 set_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3474 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_offline()
3476 block = device->block; in dasd_generic_set_offline()
3477 dasd_delete_device(device); in dasd_generic_set_offline()
3488 clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags); in dasd_generic_set_offline()
3489 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3490 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3491 dasd_put_device(device); in dasd_generic_set_offline()
3496 int dasd_generic_last_path_gone(struct dasd_device *device) in dasd_generic_last_path_gone() argument
3500 dev_warn(&device->cdev->dev, "No operational channel path is left " in dasd_generic_last_path_gone()
3502 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "last path gone"); in dasd_generic_last_path_gone()
3504 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_last_path_gone()
3506 if (device->state < DASD_STATE_BASIC) in dasd_generic_last_path_gone()
3509 list_for_each_entry(cqr, &device->ccw_queue, devlist) in dasd_generic_last_path_gone()
3515 dasd_device_set_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_last_path_gone()
3516 dasd_device_clear_timer(device); in dasd_generic_last_path_gone()
3517 dasd_schedule_device_bh(device); in dasd_generic_last_path_gone()
3522 int dasd_generic_path_operational(struct dasd_device *device) in dasd_generic_path_operational() argument
3524 dev_info(&device->cdev->dev, "A channel path to the device has become " in dasd_generic_path_operational()
3526 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "path operational"); in dasd_generic_path_operational()
3527 dasd_device_remove_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_path_operational()
3528 if (device->stopped & DASD_UNRESUMED_PM) { in dasd_generic_path_operational()
3529 dasd_device_remove_stop_bits(device, DASD_UNRESUMED_PM); in dasd_generic_path_operational()
3530 dasd_restore_device(device); in dasd_generic_path_operational()
3533 dasd_schedule_device_bh(device); in dasd_generic_path_operational()
3534 if (device->block) in dasd_generic_path_operational()
3535 dasd_schedule_block_bh(device->block); in dasd_generic_path_operational()
3537 if (!device->stopped) in dasd_generic_path_operational()
3546 struct dasd_device *device; in dasd_generic_notify() local
3549 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_notify()
3550 if (IS_ERR(device)) in dasd_generic_notify()
3557 device->path_data.opm = 0; in dasd_generic_notify()
3558 device->path_data.ppm = 0; in dasd_generic_notify()
3559 device->path_data.npm = 0; in dasd_generic_notify()
3560 ret = dasd_generic_last_path_gone(device); in dasd_generic_notify()
3564 if (device->path_data.opm) in dasd_generic_notify()
3565 ret = dasd_generic_path_operational(device); in dasd_generic_notify()
3568 dasd_put_device(device); in dasd_generic_notify()
3577 struct dasd_device *device; in dasd_generic_path_event() local
3579 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_path_event()
3580 if (IS_ERR(device)) in dasd_generic_path_event()
3585 oldopm = device->path_data.opm; in dasd_generic_path_event()
3586 device->path_data.opm &= ~eventlpm; in dasd_generic_path_event()
3587 device->path_data.ppm &= ~eventlpm; in dasd_generic_path_event()
3588 device->path_data.npm &= ~eventlpm; in dasd_generic_path_event()
3589 if (oldopm && !device->path_data.opm) { in dasd_generic_path_event()
3590 dev_warn(&device->cdev->dev, in dasd_generic_path_event()
3593 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_generic_path_event()
3595 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_path_event()
3596 dasd_device_set_stop_bits(device, in dasd_generic_path_event()
3601 device->path_data.opm &= ~eventlpm; in dasd_generic_path_event()
3602 device->path_data.ppm &= ~eventlpm; in dasd_generic_path_event()
3603 device->path_data.npm &= ~eventlpm; in dasd_generic_path_event()
3604 device->path_data.tbvpm |= eventlpm; in dasd_generic_path_event()
3605 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3608 if (!(device->path_data.opm & eventlpm) && in dasd_generic_path_event()
3609 !(device->path_data.tbvpm & eventlpm)) { in dasd_generic_path_event()
3615 device->path_data.tbvpm |= eventlpm; in dasd_generic_path_event()
3616 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3618 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_generic_path_event()
3620 if (device->discipline->kick_validate) in dasd_generic_path_event()
3621 device->discipline->kick_validate(device); in dasd_generic_path_event()
3624 dasd_put_device(device); in dasd_generic_path_event()
3628 int dasd_generic_verify_path(struct dasd_device *device, __u8 lpm) in dasd_generic_verify_path() argument
3630 if (!device->path_data.opm && lpm) { in dasd_generic_verify_path()
3631 device->path_data.opm = lpm; in dasd_generic_verify_path()
3632 dasd_generic_path_operational(device); in dasd_generic_verify_path()
3634 device->path_data.opm |= lpm; in dasd_generic_verify_path()
3642 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_pm_freeze() local
3648 if (IS_ERR(device)) in dasd_generic_pm_freeze()
3649 return PTR_ERR(device); in dasd_generic_pm_freeze()
3652 set_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_pm_freeze()
3654 if (device->discipline->freeze) in dasd_generic_pm_freeze()
3655 rc = device->discipline->freeze(device); in dasd_generic_pm_freeze()
3658 dasd_device_set_stop_bits(device, DASD_STOPPED_PM); in dasd_generic_pm_freeze()
3664 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_generic_pm_freeze()
3667 rc = device->discipline->term_IO(cqr); in dasd_generic_pm_freeze()
3670 dev_err(&device->cdev->dev, in dasd_generic_pm_freeze()
3674 dasd_put_device(device); in dasd_generic_pm_freeze()
3716 list_splice_tail(&freeze_queue, &device->ccw_queue); in dasd_generic_pm_freeze()
3719 dasd_put_device(device); in dasd_generic_pm_freeze()
3726 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_restore_device() local
3729 if (IS_ERR(device)) in dasd_generic_restore_device()
3730 return PTR_ERR(device); in dasd_generic_restore_device()
3733 dasd_device_remove_stop_bits(device, in dasd_generic_restore_device()
3736 dasd_schedule_device_bh(device); in dasd_generic_restore_device()
3742 if (device->discipline->restore && !(device->stopped)) in dasd_generic_restore_device()
3743 rc = device->discipline->restore(device); in dasd_generic_restore_device()
3744 if (rc || device->stopped) in dasd_generic_restore_device()
3749 device->stopped |= DASD_UNRESUMED_PM; in dasd_generic_restore_device()
3751 if (device->block) in dasd_generic_restore_device()
3752 dasd_schedule_block_bh(device->block); in dasd_generic_restore_device()
3754 clear_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_restore_device()
3755 dasd_put_device(device); in dasd_generic_restore_device()
3760 static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, in dasd_generic_build_rdc() argument
3769 cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device); in dasd_generic_build_rdc()
3773 dev_err(&device->cdev->dev, in dasd_generic_build_rdc()
3792 cqr->startdev = device; in dasd_generic_build_rdc()
3793 cqr->memdev = device; in dasd_generic_build_rdc()
3802 int dasd_generic_read_dev_chars(struct dasd_device *device, int magic, in dasd_generic_read_dev_chars() argument
3808 cqr = dasd_generic_build_rdc(device, rdc_buffer, rdc_buffer_size, in dasd_generic_read_dev_chars()
3855 struct dasd_device *device; in dasd_generic_shutdown() local
3857 device = dasd_device_from_cdev(cdev); in dasd_generic_shutdown()
3858 if (IS_ERR(device)) in dasd_generic_shutdown()
3861 if (device->block) in dasd_generic_shutdown()
3862 dasd_schedule_block_bh(device->block); in dasd_generic_shutdown()
3864 dasd_schedule_device_bh(device); in dasd_generic_shutdown()
3866 wait_event(shutdown_waitq, _wait_for_empty_queues(device)); in dasd_generic_shutdown()