Lines Matching refs:device
90 struct dasd_device *device; in dasd_alloc_device() local
92 device = kzalloc(sizeof(struct dasd_device), GFP_ATOMIC); in dasd_alloc_device()
93 if (!device) in dasd_alloc_device()
97 device->ccw_mem = (void *) __get_free_pages(GFP_ATOMIC | GFP_DMA, 1); in dasd_alloc_device()
98 if (!device->ccw_mem) { in dasd_alloc_device()
99 kfree(device); in dasd_alloc_device()
103 device->erp_mem = (void *) get_zeroed_page(GFP_ATOMIC | GFP_DMA); in dasd_alloc_device()
104 if (!device->erp_mem) { in dasd_alloc_device()
105 free_pages((unsigned long) device->ccw_mem, 1); in dasd_alloc_device()
106 kfree(device); in dasd_alloc_device()
110 dasd_init_chunklist(&device->ccw_chunks, device->ccw_mem, PAGE_SIZE*2); in dasd_alloc_device()
111 dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE); in dasd_alloc_device()
112 spin_lock_init(&device->mem_lock); in dasd_alloc_device()
113 atomic_set(&device->tasklet_scheduled, 0); in dasd_alloc_device()
114 tasklet_init(&device->tasklet, in dasd_alloc_device()
116 (unsigned long) device); in dasd_alloc_device()
117 INIT_LIST_HEAD(&device->ccw_queue); in dasd_alloc_device()
118 init_timer(&device->timer); in dasd_alloc_device()
119 device->timer.function = dasd_device_timeout; in dasd_alloc_device()
120 device->timer.data = (unsigned long) device; in dasd_alloc_device()
121 INIT_WORK(&device->kick_work, do_kick_device); in dasd_alloc_device()
122 INIT_WORK(&device->restore_device, do_restore_device); in dasd_alloc_device()
123 INIT_WORK(&device->reload_device, do_reload_device); in dasd_alloc_device()
124 device->state = DASD_STATE_NEW; in dasd_alloc_device()
125 device->target = DASD_STATE_NEW; in dasd_alloc_device()
126 mutex_init(&device->state_mutex); in dasd_alloc_device()
127 spin_lock_init(&device->profile.lock); in dasd_alloc_device()
128 return device; in dasd_alloc_device()
134 void dasd_free_device(struct dasd_device *device) in dasd_free_device() argument
136 kfree(device->private); in dasd_free_device()
137 free_page((unsigned long) device->erp_mem); in dasd_free_device()
138 free_pages((unsigned long) device->ccw_mem, 1); in dasd_free_device()
139 kfree(device); in dasd_free_device()
183 static int dasd_state_new_to_known(struct dasd_device *device) in dasd_state_new_to_known() argument
191 dasd_get_device(device); in dasd_state_new_to_known()
193 if (device->block) { in dasd_state_new_to_known()
194 rc = dasd_alloc_queue(device->block); in dasd_state_new_to_known()
196 dasd_put_device(device); in dasd_state_new_to_known()
200 device->state = DASD_STATE_KNOWN; in dasd_state_new_to_known()
207 static int dasd_state_known_to_new(struct dasd_device *device) in dasd_state_known_to_new() argument
210 dasd_eer_disable(device); in dasd_state_known_to_new()
212 if (device->discipline) { in dasd_state_known_to_new()
213 if (device->discipline->uncheck_device) in dasd_state_known_to_new()
214 device->discipline->uncheck_device(device); in dasd_state_known_to_new()
215 module_put(device->discipline->owner); in dasd_state_known_to_new()
217 device->discipline = NULL; in dasd_state_known_to_new()
218 if (device->base_discipline) in dasd_state_known_to_new()
219 module_put(device->base_discipline->owner); in dasd_state_known_to_new()
220 device->base_discipline = NULL; in dasd_state_known_to_new()
221 device->state = DASD_STATE_NEW; in dasd_state_known_to_new()
223 if (device->block) in dasd_state_known_to_new()
224 dasd_free_queue(device->block); in dasd_state_known_to_new()
227 dasd_put_device(device); in dasd_state_known_to_new()
247 static int dasd_state_known_to_basic(struct dasd_device *device) in dasd_state_known_to_basic() argument
249 struct dasd_block *block = device->block; in dasd_state_known_to_basic()
262 dasd_profile_on(&device->block->profile); in dasd_state_known_to_basic()
264 device->debugfs_dentry = in dasd_state_known_to_basic()
265 dasd_debugfs_setup(dev_name(&device->cdev->dev), in dasd_state_known_to_basic()
267 dasd_profile_init(&device->profile, device->debugfs_dentry); in dasd_state_known_to_basic()
270 device->debug_area = debug_register(dev_name(&device->cdev->dev), 4, 1, in dasd_state_known_to_basic()
272 debug_register_view(device->debug_area, &debug_sprintf_view); in dasd_state_known_to_basic()
273 debug_set_level(device->debug_area, DBF_WARNING); in dasd_state_known_to_basic()
274 DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created"); in dasd_state_known_to_basic()
276 device->state = DASD_STATE_BASIC; in dasd_state_known_to_basic()
284 static int dasd_state_basic_to_known(struct dasd_device *device) in dasd_state_basic_to_known() argument
288 if (device->discipline->basic_to_known) { in dasd_state_basic_to_known()
289 rc = device->discipline->basic_to_known(device); in dasd_state_basic_to_known()
294 if (device->block) { in dasd_state_basic_to_known()
295 dasd_profile_exit(&device->block->profile); in dasd_state_basic_to_known()
296 debugfs_remove(device->block->debugfs_dentry); in dasd_state_basic_to_known()
297 dasd_gendisk_free(device->block); in dasd_state_basic_to_known()
298 dasd_block_clear_timer(device->block); in dasd_state_basic_to_known()
300 rc = dasd_flush_device_queue(device); in dasd_state_basic_to_known()
303 dasd_device_clear_timer(device); in dasd_state_basic_to_known()
304 dasd_profile_exit(&device->profile); in dasd_state_basic_to_known()
305 debugfs_remove(device->debugfs_dentry); in dasd_state_basic_to_known()
306 DBF_DEV_EVENT(DBF_EMERG, device, "%p debug area deleted", device); in dasd_state_basic_to_known()
307 if (device->debug_area != NULL) { in dasd_state_basic_to_known()
308 debug_unregister(device->debug_area); in dasd_state_basic_to_known()
309 device->debug_area = NULL; in dasd_state_basic_to_known()
311 device->state = DASD_STATE_KNOWN; in dasd_state_basic_to_known()
329 static int dasd_state_basic_to_ready(struct dasd_device *device) in dasd_state_basic_to_ready() argument
335 block = device->block; in dasd_state_basic_to_ready()
342 device->state = DASD_STATE_UNFMT; in dasd_state_basic_to_ready()
350 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
353 device->state = DASD_STATE_BASIC; in dasd_state_basic_to_ready()
357 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
360 if (device->discipline->basic_to_ready) in dasd_state_basic_to_ready()
361 rc = device->discipline->basic_to_ready(device); in dasd_state_basic_to_ready()
366 int _wait_for_empty_queues(struct dasd_device *device) in _wait_for_empty_queues() argument
368 if (device->block) in _wait_for_empty_queues()
369 return list_empty(&device->ccw_queue) && in _wait_for_empty_queues()
370 list_empty(&device->block->ccw_queue); in _wait_for_empty_queues()
372 return list_empty(&device->ccw_queue); in _wait_for_empty_queues()
380 static int dasd_state_ready_to_basic(struct dasd_device *device) in dasd_state_ready_to_basic() argument
384 device->state = DASD_STATE_BASIC; in dasd_state_ready_to_basic()
385 if (device->block) { in dasd_state_ready_to_basic()
386 struct dasd_block *block = device->block; in dasd_state_ready_to_basic()
389 device->state = DASD_STATE_READY; in dasd_state_ready_to_basic()
404 static int dasd_state_unfmt_to_basic(struct dasd_device *device) in dasd_state_unfmt_to_basic() argument
406 device->state = DASD_STATE_BASIC; in dasd_state_unfmt_to_basic()
416 dasd_state_ready_to_online(struct dasd_device * device) in dasd_state_ready_to_online() argument
422 device->state = DASD_STATE_ONLINE; in dasd_state_ready_to_online()
423 if (device->block) { in dasd_state_ready_to_online()
424 dasd_schedule_block_bh(device->block); in dasd_state_ready_to_online()
425 if ((device->features & DASD_FEATURE_USERAW)) { in dasd_state_ready_to_online()
426 disk = device->block->gdp; in dasd_state_ready_to_online()
430 disk = device->block->bdev->bd_disk; in dasd_state_ready_to_online()
442 static int dasd_state_online_to_ready(struct dasd_device *device) in dasd_state_online_to_ready() argument
449 if (device->discipline->online_to_ready) { in dasd_state_online_to_ready()
450 rc = device->discipline->online_to_ready(device); in dasd_state_online_to_ready()
455 device->state = DASD_STATE_READY; in dasd_state_online_to_ready()
456 if (device->block && !(device->features & DASD_FEATURE_USERAW)) { in dasd_state_online_to_ready()
457 disk = device->block->bdev->bd_disk; in dasd_state_online_to_ready()
469 static int dasd_increase_state(struct dasd_device *device) in dasd_increase_state() argument
474 if (device->state == DASD_STATE_NEW && in dasd_increase_state()
475 device->target >= DASD_STATE_KNOWN) in dasd_increase_state()
476 rc = dasd_state_new_to_known(device); in dasd_increase_state()
479 device->state == DASD_STATE_KNOWN && in dasd_increase_state()
480 device->target >= DASD_STATE_BASIC) in dasd_increase_state()
481 rc = dasd_state_known_to_basic(device); in dasd_increase_state()
484 device->state == DASD_STATE_BASIC && in dasd_increase_state()
485 device->target >= DASD_STATE_READY) in dasd_increase_state()
486 rc = dasd_state_basic_to_ready(device); in dasd_increase_state()
489 device->state == DASD_STATE_UNFMT && in dasd_increase_state()
490 device->target > DASD_STATE_UNFMT) in dasd_increase_state()
494 device->state == DASD_STATE_READY && in dasd_increase_state()
495 device->target >= DASD_STATE_ONLINE) in dasd_increase_state()
496 rc = dasd_state_ready_to_online(device); in dasd_increase_state()
504 static int dasd_decrease_state(struct dasd_device *device) in dasd_decrease_state() argument
509 if (device->state == DASD_STATE_ONLINE && in dasd_decrease_state()
510 device->target <= DASD_STATE_READY) in dasd_decrease_state()
511 rc = dasd_state_online_to_ready(device); in dasd_decrease_state()
514 device->state == DASD_STATE_READY && in dasd_decrease_state()
515 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
516 rc = dasd_state_ready_to_basic(device); in dasd_decrease_state()
519 device->state == DASD_STATE_UNFMT && in dasd_decrease_state()
520 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
521 rc = dasd_state_unfmt_to_basic(device); in dasd_decrease_state()
524 device->state == DASD_STATE_BASIC && in dasd_decrease_state()
525 device->target <= DASD_STATE_KNOWN) in dasd_decrease_state()
526 rc = dasd_state_basic_to_known(device); in dasd_decrease_state()
529 device->state == DASD_STATE_KNOWN && in dasd_decrease_state()
530 device->target <= DASD_STATE_NEW) in dasd_decrease_state()
531 rc = dasd_state_known_to_new(device); in dasd_decrease_state()
539 static void dasd_change_state(struct dasd_device *device) in dasd_change_state() argument
543 if (device->state == device->target) in dasd_change_state()
546 if (device->state < device->target) in dasd_change_state()
547 rc = dasd_increase_state(device); in dasd_change_state()
549 rc = dasd_decrease_state(device); in dasd_change_state()
553 device->target = device->state; in dasd_change_state()
556 kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); in dasd_change_state()
558 if (device->state == device->target) in dasd_change_state()
570 struct dasd_device *device = container_of(work, struct dasd_device, kick_work); in do_kick_device() local
571 mutex_lock(&device->state_mutex); in do_kick_device()
572 dasd_change_state(device); in do_kick_device()
573 mutex_unlock(&device->state_mutex); in do_kick_device()
574 dasd_schedule_device_bh(device); in do_kick_device()
575 dasd_put_device(device); in do_kick_device()
578 void dasd_kick_device(struct dasd_device *device) in dasd_kick_device() argument
580 dasd_get_device(device); in dasd_kick_device()
582 if (!schedule_work(&device->kick_work)) in dasd_kick_device()
583 dasd_put_device(device); in dasd_kick_device()
593 struct dasd_device *device = container_of(work, struct dasd_device, in do_reload_device() local
595 device->discipline->reload(device); in do_reload_device()
596 dasd_put_device(device); in do_reload_device()
599 void dasd_reload_device(struct dasd_device *device) in dasd_reload_device() argument
601 dasd_get_device(device); in dasd_reload_device()
603 if (!schedule_work(&device->reload_device)) in dasd_reload_device()
604 dasd_put_device(device); in dasd_reload_device()
614 struct dasd_device *device = container_of(work, struct dasd_device, in do_restore_device() local
616 device->cdev->drv->restore(device->cdev); in do_restore_device()
617 dasd_put_device(device); in do_restore_device()
620 void dasd_restore_device(struct dasd_device *device) in dasd_restore_device() argument
622 dasd_get_device(device); in dasd_restore_device()
624 if (!schedule_work(&device->restore_device)) in dasd_restore_device()
625 dasd_put_device(device); in dasd_restore_device()
631 void dasd_set_target_state(struct dasd_device *device, int target) in dasd_set_target_state() argument
633 dasd_get_device(device); in dasd_set_target_state()
634 mutex_lock(&device->state_mutex); in dasd_set_target_state()
638 if (device->target != target) { in dasd_set_target_state()
639 if (device->state == target) in dasd_set_target_state()
641 device->target = target; in dasd_set_target_state()
643 if (device->state != device->target) in dasd_set_target_state()
644 dasd_change_state(device); in dasd_set_target_state()
645 mutex_unlock(&device->state_mutex); in dasd_set_target_state()
646 dasd_put_device(device); in dasd_set_target_state()
653 static inline int _wait_for_device(struct dasd_device *device) in _wait_for_device() argument
655 return (device->state == device->target); in _wait_for_device()
658 void dasd_enable_device(struct dasd_device *device) in dasd_enable_device() argument
660 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_enable_device()
661 if (device->state <= DASD_STATE_KNOWN) in dasd_enable_device()
663 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_enable_device()
665 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_enable_device()
667 dasd_reload_device(device); in dasd_enable_device()
668 if (device->discipline->kick_validate) in dasd_enable_device()
669 device->discipline->kick_validate(device); in dasd_enable_device()
694 struct dasd_device *device; in dasd_profile_start() local
724 device = cqr->startdev; in dasd_profile_start()
725 if (device->profile.data) { in dasd_profile_start()
727 list_for_each(l, &device->ccw_queue) in dasd_profile_start()
731 spin_lock(&device->profile.lock); in dasd_profile_start()
732 if (device->profile.data) { in dasd_profile_start()
733 device->profile.data->dasd_io_nr_req[counter]++; in dasd_profile_start()
735 device->profile.data->dasd_read_nr_req[counter]++; in dasd_profile_start()
737 spin_unlock(&device->profile.lock); in dasd_profile_start()
804 struct dasd_device *device; in dasd_profile_end() local
808 device = cqr->startdev; in dasd_profile_end()
811 device->profile.data)) in dasd_profile_end()
859 spin_lock(&device->profile.lock); in dasd_profile_end()
860 if (device->profile.data) in dasd_profile_end()
861 dasd_profile_end_add_data(device->profile.data, in dasd_profile_end()
869 spin_unlock(&device->profile.lock); in dasd_profile_end()
1160 struct dasd_device *device) in dasd_kmalloc_request() argument
1191 dasd_get_device(device); in dasd_kmalloc_request()
1198 struct dasd_device *device) in dasd_smalloc_request() argument
1210 spin_lock_irqsave(&device->mem_lock, flags); in dasd_smalloc_request()
1212 dasd_alloc_chunk(&device->ccw_chunks, size); in dasd_smalloc_request()
1213 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_smalloc_request()
1231 dasd_get_device(device); in dasd_smalloc_request()
1241 void dasd_kfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_kfree_request() argument
1253 dasd_put_device(device); in dasd_kfree_request()
1257 void dasd_sfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_sfree_request() argument
1261 spin_lock_irqsave(&device->mem_lock, flags); in dasd_sfree_request()
1262 dasd_free_chunk(&device->ccw_chunks, cqr); in dasd_sfree_request()
1263 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_sfree_request()
1264 dasd_put_device(device); in dasd_sfree_request()
1273 struct dasd_device *device; in dasd_check_cqr() local
1277 device = cqr->startdev; in dasd_check_cqr()
1278 if (strncmp((char *) &cqr->magic, device->discipline->ebcname, 4)) { in dasd_check_cqr()
1279 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_check_cqr()
1283 *(unsigned int *) device->discipline->name); in dasd_check_cqr()
1297 struct dasd_device *device; in dasd_term_IO() local
1306 device = (struct dasd_device *) cqr->startdev; in dasd_term_IO()
1308 rc = ccw_device_clear(device->cdev, (long) cqr); in dasd_term_IO()
1314 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_term_IO()
1319 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1323 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1336 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1342 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1348 dev_err(&device->cdev->dev, "An error occurred in the " in dasd_term_IO()
1355 dasd_schedule_device_bh(device); in dasd_term_IO()
1366 struct dasd_device *device; in dasd_start_IO() local
1376 device = (struct dasd_device *) cqr->startdev; in dasd_start_IO()
1379 test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags)) && in dasd_start_IO()
1381 DBF_DEV_EVENT(DBF_DEBUG, device, "start_IO: return request %p " in dasd_start_IO()
1390 dev_err(&device->cdev->dev, "An error occurred in the DASD " in dasd_start_IO()
1399 cqr->lpm &= device->path_data.opm; in dasd_start_IO()
1401 cqr->lpm = device->path_data.opm; in dasd_start_IO()
1404 rc = ccw_device_tm_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1407 rc = ccw_device_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1415 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1419 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1431 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_start_IO()
1434 } else if (cqr->lpm != device->path_data.opm) { in dasd_start_IO()
1435 cqr->lpm = device->path_data.opm; in dasd_start_IO()
1436 DBF_DEV_EVENT(DBF_DEBUG, device, "%s", in dasd_start_IO()
1440 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1443 dasd_generic_last_path_gone(device); in dasd_start_IO()
1444 device->path_data.opm = 0; in dasd_start_IO()
1445 device->path_data.ppm = 0; in dasd_start_IO()
1446 device->path_data.npm = 0; in dasd_start_IO()
1447 device->path_data.tbvpm = in dasd_start_IO()
1448 ccw_device_get_path_mask(device->cdev); in dasd_start_IO()
1452 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1456 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1461 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1468 dev_err(&device->cdev->dev, in dasd_start_IO()
1490 struct dasd_device *device; in dasd_device_timeout() local
1492 device = (struct dasd_device *) ptr; in dasd_device_timeout()
1493 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1495 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_device_timeout()
1496 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1497 dasd_schedule_device_bh(device); in dasd_device_timeout()
1503 void dasd_device_set_timer(struct dasd_device *device, int expires) in dasd_device_set_timer() argument
1506 del_timer(&device->timer); in dasd_device_set_timer()
1508 mod_timer(&device->timer, jiffies + expires); in dasd_device_set_timer()
1515 void dasd_device_clear_timer(struct dasd_device *device) in dasd_device_clear_timer() argument
1517 del_timer(&device->timer); in dasd_device_clear_timer()
1525 struct dasd_device *device; in dasd_handle_killed_request() local
1537 device = dasd_device_from_cdev_locked(cdev); in dasd_handle_killed_request()
1538 if (IS_ERR(device)) { in dasd_handle_killed_request()
1545 device != cqr->startdev || in dasd_handle_killed_request()
1550 dasd_put_device(device); in dasd_handle_killed_request()
1557 dasd_device_clear_timer(device); in dasd_handle_killed_request()
1558 dasd_schedule_device_bh(device); in dasd_handle_killed_request()
1559 dasd_put_device(device); in dasd_handle_killed_request()
1562 void dasd_generic_handle_state_change(struct dasd_device *device) in dasd_generic_handle_state_change() argument
1565 dasd_eer_snss(device); in dasd_generic_handle_state_change()
1567 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_generic_handle_state_change()
1568 dasd_schedule_device_bh(device); in dasd_generic_handle_state_change()
1569 if (device->block) in dasd_generic_handle_state_change()
1570 dasd_schedule_block_bh(device->block); in dasd_generic_handle_state_change()
1581 struct dasd_device *device; in dasd_int_handler() local
1610 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1611 if (IS_ERR(device)) in dasd_int_handler()
1614 if (device->discipline == dasd_diag_discipline_pointer) { in dasd_int_handler()
1615 dasd_put_device(device); in dasd_int_handler()
1618 device->discipline->dump_sense_dbf(device, irb, "int"); in dasd_int_handler()
1619 if (device->features & DASD_FEATURE_ERPLOG) in dasd_int_handler()
1620 device->discipline->dump_sense(device, cqr, irb); in dasd_int_handler()
1621 device->discipline->check_for_device_change(device, cqr, irb); in dasd_int_handler()
1622 dasd_put_device(device); in dasd_int_handler()
1627 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1628 device->discipline->check_attention(device, irb->esw.esw1.lpum); in dasd_int_handler()
1629 dasd_put_device(device); in dasd_int_handler()
1635 device = (struct dasd_device *) cqr->startdev; in dasd_int_handler()
1636 if (!device || in dasd_int_handler()
1637 strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { in dasd_int_handler()
1647 dasd_device_clear_timer(device); in dasd_int_handler()
1649 dasd_schedule_device_bh(device); in dasd_int_handler()
1655 DBF_DEV_EVENT(DBF_DEBUG, device, "invalid status: bus_id %s, " in dasd_int_handler()
1668 if (cqr->devlist.next != &device->ccw_queue) { in dasd_int_handler()
1679 if (cqr->lpm == device->path_data.opm) in dasd_int_handler()
1680 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_int_handler()
1685 cqr->lpm = device->path_data.opm; in dasd_int_handler()
1692 (!device->stopped)) { in dasd_int_handler()
1693 if (device->discipline->start_IO(next) == 0) in dasd_int_handler()
1697 dasd_device_set_timer(device, expires); in dasd_int_handler()
1699 dasd_device_clear_timer(device); in dasd_int_handler()
1700 dasd_schedule_device_bh(device); in dasd_int_handler()
1706 struct dasd_device *device; in dasd_generic_uc_handler() local
1708 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_uc_handler()
1710 if (IS_ERR(device)) in dasd_generic_uc_handler()
1712 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || in dasd_generic_uc_handler()
1713 device->state != device->target || in dasd_generic_uc_handler()
1714 !device->discipline->check_for_device_change){ in dasd_generic_uc_handler()
1715 dasd_put_device(device); in dasd_generic_uc_handler()
1718 if (device->discipline->dump_sense_dbf) in dasd_generic_uc_handler()
1719 device->discipline->dump_sense_dbf(device, irb, "uc"); in dasd_generic_uc_handler()
1720 device->discipline->check_for_device_change(device, NULL, irb); in dasd_generic_uc_handler()
1721 dasd_put_device(device); in dasd_generic_uc_handler()
1731 static void __dasd_device_recovery(struct dasd_device *device, in __dasd_device_recovery() argument
1743 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_recovery()
1756 static void __dasd_device_process_ccw_queue(struct dasd_device *device, in __dasd_device_process_ccw_queue() argument
1763 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_process_ccw_queue()
1772 __dasd_device_recovery(device, cqr); in __dasd_device_process_ccw_queue()
1783 static void __dasd_device_process_final_queue(struct dasd_device *device, in __dasd_device_process_final_queue() argument
1814 dev_err(&device->cdev->dev, in __dasd_device_process_final_queue()
1830 static void __dasd_device_check_expire(struct dasd_device *device) in __dasd_device_check_expire() argument
1834 if (list_empty(&device->ccw_queue)) in __dasd_device_check_expire()
1836 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_check_expire()
1839 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_check_expire()
1846 if (device->discipline->term_IO(cqr) != 0) { in __dasd_device_check_expire()
1848 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
1853 dasd_device_set_timer(device, 5*HZ); in __dasd_device_check_expire()
1855 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
1867 static void __dasd_device_start_head(struct dasd_device *device) in __dasd_device_start_head() argument
1872 if (list_empty(&device->ccw_queue)) in __dasd_device_start_head()
1874 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_start_head()
1881 if (device->stopped && in __dasd_device_start_head()
1882 !(!(device->stopped & ~(DASD_STOPPED_DC_WAIT | DASD_UNRESUMED_PM)) in __dasd_device_start_head()
1886 dasd_schedule_device_bh(device); in __dasd_device_start_head()
1890 rc = device->discipline->start_IO(cqr); in __dasd_device_start_head()
1892 dasd_device_set_timer(device, cqr->expires); in __dasd_device_start_head()
1894 dasd_schedule_device_bh(device); in __dasd_device_start_head()
1897 dasd_device_set_timer(device, 50); in __dasd_device_start_head()
1900 static void __dasd_device_check_path_events(struct dasd_device *device) in __dasd_device_check_path_events() argument
1904 if (device->path_data.tbvpm) { in __dasd_device_check_path_events()
1905 if (device->stopped & ~(DASD_STOPPED_DC_WAIT | in __dasd_device_check_path_events()
1908 rc = device->discipline->verify_path( in __dasd_device_check_path_events()
1909 device, device->path_data.tbvpm); in __dasd_device_check_path_events()
1911 dasd_device_set_timer(device, 50); in __dasd_device_check_path_events()
1913 device->path_data.tbvpm = 0; in __dasd_device_check_path_events()
1927 int dasd_flush_device_queue(struct dasd_device *device) in dasd_flush_device_queue() argument
1934 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
1936 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_flush_device_queue()
1940 rc = device->discipline->term_IO(cqr); in dasd_flush_device_queue()
1943 dev_err(&device->cdev->dev, in dasd_flush_device_queue()
1960 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
1973 __dasd_device_process_final_queue(device, &flush_queue); in dasd_flush_device_queue()
1981 static void dasd_device_tasklet(struct dasd_device *device) in dasd_device_tasklet() argument
1985 atomic_set (&device->tasklet_scheduled, 0); in dasd_device_tasklet()
1987 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
1989 __dasd_device_check_expire(device); in dasd_device_tasklet()
1991 __dasd_device_process_ccw_queue(device, &final_queue); in dasd_device_tasklet()
1992 __dasd_device_check_path_events(device); in dasd_device_tasklet()
1993 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
1995 __dasd_device_process_final_queue(device, &final_queue); in dasd_device_tasklet()
1996 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
1998 __dasd_device_start_head(device); in dasd_device_tasklet()
1999 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2002 dasd_put_device(device); in dasd_device_tasklet()
2008 void dasd_schedule_device_bh(struct dasd_device *device) in dasd_schedule_device_bh() argument
2011 if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) in dasd_schedule_device_bh()
2013 dasd_get_device(device); in dasd_schedule_device_bh()
2014 tasklet_hi_schedule(&device->tasklet); in dasd_schedule_device_bh()
2018 void dasd_device_set_stop_bits(struct dasd_device *device, int bits) in dasd_device_set_stop_bits() argument
2020 device->stopped |= bits; in dasd_device_set_stop_bits()
2024 void dasd_device_remove_stop_bits(struct dasd_device *device, int bits) in dasd_device_remove_stop_bits() argument
2026 device->stopped &= ~bits; in dasd_device_remove_stop_bits()
2027 if (!device->stopped) in dasd_device_remove_stop_bits()
2038 struct dasd_device *device; in dasd_add_request_head() local
2041 device = cqr->startdev; in dasd_add_request_head()
2042 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2044 list_add(&cqr->devlist, &device->ccw_queue); in dasd_add_request_head()
2046 dasd_schedule_device_bh(device); in dasd_add_request_head()
2047 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2057 struct dasd_device *device; in dasd_add_request_tail() local
2060 device = cqr->startdev; in dasd_add_request_tail()
2061 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2063 list_add_tail(&cqr->devlist, &device->ccw_queue); in dasd_add_request_tail()
2065 dasd_schedule_device_bh(device); in dasd_add_request_tail()
2066 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2084 struct dasd_device *device; in _wait_for_wakeup() local
2087 device = cqr->startdev; in _wait_for_wakeup()
2088 spin_lock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2090 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2099 struct dasd_device *device; in __dasd_sleep_on_erp() local
2104 device = cqr->startdev; in __dasd_sleep_on_erp()
2107 device->discipline->handle_terminated_request(cqr); in __dasd_sleep_on_erp()
2111 erp_fn = device->discipline->erp_action(cqr); in __dasd_sleep_on_erp()
2118 __dasd_process_erp(device, cqr); in __dasd_sleep_on_erp()
2138 struct dasd_device *device; in _dasd_sleep_on() local
2145 device = maincqr->startdev; in _dasd_sleep_on()
2155 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on()
2162 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on()
2164 (!dasd_eer_enabled(device))) { in _dasd_sleep_on()
2176 generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2183 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2233 struct dasd_device *device; in _dasd_sleep_on_queue() local
2239 device = cqr->startdev; in _dasd_sleep_on_queue()
2243 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on_queue()
2250 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on_queue()
2252 !dasd_eer_enabled(device)) { in _dasd_sleep_on_queue()
2261 generic_waitq, !device->stopped); in _dasd_sleep_on_queue()
2268 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on_queue()
2334 static inline int _dasd_term_running_cqr(struct dasd_device *device) in _dasd_term_running_cqr() argument
2339 if (list_empty(&device->ccw_queue)) in _dasd_term_running_cqr()
2341 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in _dasd_term_running_cqr()
2342 rc = device->discipline->term_IO(cqr); in _dasd_term_running_cqr()
2355 struct dasd_device *device; in dasd_sleep_on_immediatly() local
2358 device = cqr->startdev; in dasd_sleep_on_immediatly()
2359 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in dasd_sleep_on_immediatly()
2365 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2366 rc = _dasd_term_running_cqr(device); in dasd_sleep_on_immediatly()
2368 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2378 list_add(&cqr->devlist, device->ccw_queue.next); in dasd_sleep_on_immediatly()
2381 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2383 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2395 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2396 if (device->block) in dasd_sleep_on_immediatly()
2397 dasd_schedule_block_bh(device->block); in dasd_sleep_on_immediatly()
2414 struct dasd_device *device = cqr->startdev; in dasd_cancel_req() local
2419 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2429 rc = device->discipline->term_IO(cqr); in dasd_cancel_req()
2431 dev_err(&device->cdev->dev, in dasd_cancel_req()
2441 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2442 dasd_schedule_device_bh(device); in dasd_cancel_req()
2493 static void __dasd_process_erp(struct dasd_device *device, in __dasd_process_erp() argument
2499 DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful"); in __dasd_process_erp()
2501 dev_err(&device->cdev->dev, "ERP failed for the DASD\n"); in __dasd_process_erp()
2502 erp_fn = device->discipline->erp_postaction(cqr); in __dasd_process_erp()
2913 struct dasd_device *device; in dasd_times_out() local
2919 device = cqr->startdev ? cqr->startdev : block->base; in dasd_times_out()
2920 if (!device->blk_timeout) in dasd_times_out()
2922 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_times_out()
2927 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2931 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2936 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2951 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2953 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
2967 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3175 int dasd_device_is_ro(struct dasd_device *device) in dasd_device_is_ro() argument
3183 ccw_device_get_id(device->cdev, &dev_id); in dasd_device_is_ro()
3245 struct dasd_device *device; in dasd_generic_remove() local
3250 device = dasd_device_from_cdev(cdev); in dasd_generic_remove()
3251 if (IS_ERR(device)) { in dasd_generic_remove()
3255 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) && in dasd_generic_remove()
3256 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_remove()
3258 dasd_put_device(device); in dasd_generic_remove()
3267 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_remove()
3269 block = device->block; in dasd_generic_remove()
3270 dasd_delete_device(device); in dasd_generic_remove()
3291 struct dasd_device *device; in dasd_generic_set_online() local
3296 device = dasd_create_device(cdev); in dasd_generic_set_online()
3297 if (IS_ERR(device)) in dasd_generic_set_online()
3298 return PTR_ERR(device); in dasd_generic_set_online()
3301 if (device->features & DASD_FEATURE_USEDIAG) { in dasd_generic_set_online()
3305 dasd_delete_device(device); in dasd_generic_set_online()
3311 dasd_delete_device(device); in dasd_generic_set_online()
3316 dasd_delete_device(device); in dasd_generic_set_online()
3319 device->base_discipline = base_discipline; in dasd_generic_set_online()
3320 device->discipline = discipline; in dasd_generic_set_online()
3323 rc = discipline->check_device(device); in dasd_generic_set_online()
3329 dasd_delete_device(device); in dasd_generic_set_online()
3333 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_generic_set_online()
3334 if (device->state <= DASD_STATE_KNOWN) { in dasd_generic_set_online()
3338 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_online()
3339 if (device->block) in dasd_generic_set_online()
3340 dasd_free_block(device->block); in dasd_generic_set_online()
3341 dasd_delete_device(device); in dasd_generic_set_online()
3346 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_generic_set_online()
3348 dasd_put_device(device); in dasd_generic_set_online()
3355 struct dasd_device *device; in dasd_generic_set_offline() local
3360 device = dasd_device_from_cdev(cdev); in dasd_generic_set_offline()
3361 if (IS_ERR(device)) in dasd_generic_set_offline()
3362 return PTR_ERR(device); in dasd_generic_set_offline()
3370 if (device->block) { in dasd_generic_set_offline()
3371 max_count = device->block->bdev ? 0 : -1; in dasd_generic_set_offline()
3372 open_count = atomic_read(&device->block->open_count); in dasd_generic_set_offline()
3380 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3381 dasd_put_device(device); in dasd_generic_set_offline()
3386 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3392 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3394 dasd_put_device(device); in dasd_generic_set_offline()
3397 clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags); in dasd_generic_set_offline()
3400 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3402 dasd_put_device(device); in dasd_generic_set_offline()
3411 if (test_and_clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags) && in dasd_generic_set_offline()
3412 !test_and_set_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3420 rc = fsync_bdev(device->block->bdev); in dasd_generic_set_offline()
3425 dasd_schedule_device_bh(device); in dasd_generic_set_offline()
3427 _wait_for_empty_queues(device)); in dasd_generic_set_offline()
3432 set_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3433 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_offline()
3435 block = device->block; in dasd_generic_set_offline()
3436 dasd_delete_device(device); in dasd_generic_set_offline()
3447 clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags); in dasd_generic_set_offline()
3448 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3449 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3450 dasd_put_device(device); in dasd_generic_set_offline()
3455 int dasd_generic_last_path_gone(struct dasd_device *device) in dasd_generic_last_path_gone() argument
3459 dev_warn(&device->cdev->dev, "No operational channel path is left " in dasd_generic_last_path_gone()
3461 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "last path gone"); in dasd_generic_last_path_gone()
3463 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_last_path_gone()
3465 if (device->state < DASD_STATE_BASIC) in dasd_generic_last_path_gone()
3468 list_for_each_entry(cqr, &device->ccw_queue, devlist) in dasd_generic_last_path_gone()
3474 dasd_device_set_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_last_path_gone()
3475 dasd_device_clear_timer(device); in dasd_generic_last_path_gone()
3476 dasd_schedule_device_bh(device); in dasd_generic_last_path_gone()
3481 int dasd_generic_path_operational(struct dasd_device *device) in dasd_generic_path_operational() argument
3483 dev_info(&device->cdev->dev, "A channel path to the device has become " in dasd_generic_path_operational()
3485 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "path operational"); in dasd_generic_path_operational()
3486 dasd_device_remove_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_path_operational()
3487 if (device->stopped & DASD_UNRESUMED_PM) { in dasd_generic_path_operational()
3488 dasd_device_remove_stop_bits(device, DASD_UNRESUMED_PM); in dasd_generic_path_operational()
3489 dasd_restore_device(device); in dasd_generic_path_operational()
3492 dasd_schedule_device_bh(device); in dasd_generic_path_operational()
3493 if (device->block) in dasd_generic_path_operational()
3494 dasd_schedule_block_bh(device->block); in dasd_generic_path_operational()
3496 if (!device->stopped) in dasd_generic_path_operational()
3505 struct dasd_device *device; in dasd_generic_notify() local
3508 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_notify()
3509 if (IS_ERR(device)) in dasd_generic_notify()
3516 device->path_data.opm = 0; in dasd_generic_notify()
3517 device->path_data.ppm = 0; in dasd_generic_notify()
3518 device->path_data.npm = 0; in dasd_generic_notify()
3519 ret = dasd_generic_last_path_gone(device); in dasd_generic_notify()
3523 if (device->path_data.opm) in dasd_generic_notify()
3524 ret = dasd_generic_path_operational(device); in dasd_generic_notify()
3527 dasd_put_device(device); in dasd_generic_notify()
3536 struct dasd_device *device; in dasd_generic_path_event() local
3538 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_path_event()
3539 if (IS_ERR(device)) in dasd_generic_path_event()
3544 oldopm = device->path_data.opm; in dasd_generic_path_event()
3545 device->path_data.opm &= ~eventlpm; in dasd_generic_path_event()
3546 device->path_data.ppm &= ~eventlpm; in dasd_generic_path_event()
3547 device->path_data.npm &= ~eventlpm; in dasd_generic_path_event()
3548 if (oldopm && !device->path_data.opm) { in dasd_generic_path_event()
3549 dev_warn(&device->cdev->dev, in dasd_generic_path_event()
3552 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_generic_path_event()
3554 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_path_event()
3555 dasd_device_set_stop_bits(device, in dasd_generic_path_event()
3560 device->path_data.opm &= ~eventlpm; in dasd_generic_path_event()
3561 device->path_data.ppm &= ~eventlpm; in dasd_generic_path_event()
3562 device->path_data.npm &= ~eventlpm; in dasd_generic_path_event()
3563 device->path_data.tbvpm |= eventlpm; in dasd_generic_path_event()
3564 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3567 if (!(device->path_data.opm & eventlpm) && in dasd_generic_path_event()
3568 !(device->path_data.tbvpm & eventlpm)) { in dasd_generic_path_event()
3574 device->path_data.tbvpm |= eventlpm; in dasd_generic_path_event()
3575 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3577 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_generic_path_event()
3579 if (device->discipline->kick_validate) in dasd_generic_path_event()
3580 device->discipline->kick_validate(device); in dasd_generic_path_event()
3583 dasd_put_device(device); in dasd_generic_path_event()
3587 int dasd_generic_verify_path(struct dasd_device *device, __u8 lpm) in dasd_generic_verify_path() argument
3589 if (!device->path_data.opm && lpm) { in dasd_generic_verify_path()
3590 device->path_data.opm = lpm; in dasd_generic_verify_path()
3591 dasd_generic_path_operational(device); in dasd_generic_verify_path()
3593 device->path_data.opm |= lpm; in dasd_generic_verify_path()
3601 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_pm_freeze() local
3607 if (IS_ERR(device)) in dasd_generic_pm_freeze()
3608 return PTR_ERR(device); in dasd_generic_pm_freeze()
3611 set_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_pm_freeze()
3613 if (device->discipline->freeze) in dasd_generic_pm_freeze()
3614 rc = device->discipline->freeze(device); in dasd_generic_pm_freeze()
3617 dasd_device_set_stop_bits(device, DASD_STOPPED_PM); in dasd_generic_pm_freeze()
3623 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_generic_pm_freeze()
3626 rc = device->discipline->term_IO(cqr); in dasd_generic_pm_freeze()
3629 dev_err(&device->cdev->dev, in dasd_generic_pm_freeze()
3633 dasd_put_device(device); in dasd_generic_pm_freeze()
3675 list_splice_tail(&freeze_queue, &device->ccw_queue); in dasd_generic_pm_freeze()
3678 dasd_put_device(device); in dasd_generic_pm_freeze()
3685 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_restore_device() local
3688 if (IS_ERR(device)) in dasd_generic_restore_device()
3689 return PTR_ERR(device); in dasd_generic_restore_device()
3692 dasd_device_remove_stop_bits(device, in dasd_generic_restore_device()
3695 dasd_schedule_device_bh(device); in dasd_generic_restore_device()
3701 if (device->discipline->restore && !(device->stopped)) in dasd_generic_restore_device()
3702 rc = device->discipline->restore(device); in dasd_generic_restore_device()
3703 if (rc || device->stopped) in dasd_generic_restore_device()
3708 device->stopped |= DASD_UNRESUMED_PM; in dasd_generic_restore_device()
3710 if (device->block) in dasd_generic_restore_device()
3711 dasd_schedule_block_bh(device->block); in dasd_generic_restore_device()
3713 clear_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_restore_device()
3714 dasd_put_device(device); in dasd_generic_restore_device()
3719 static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, in dasd_generic_build_rdc() argument
3728 cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device); in dasd_generic_build_rdc()
3732 dev_err(&device->cdev->dev, in dasd_generic_build_rdc()
3751 cqr->startdev = device; in dasd_generic_build_rdc()
3752 cqr->memdev = device; in dasd_generic_build_rdc()
3761 int dasd_generic_read_dev_chars(struct dasd_device *device, int magic, in dasd_generic_read_dev_chars() argument
3767 cqr = dasd_generic_build_rdc(device, rdc_buffer, rdc_buffer_size, in dasd_generic_read_dev_chars()
3814 struct dasd_device *device; in dasd_generic_shutdown() local
3816 device = dasd_device_from_cdev(cdev); in dasd_generic_shutdown()
3817 if (IS_ERR(device)) in dasd_generic_shutdown()
3820 if (device->block) in dasd_generic_shutdown()
3821 dasd_schedule_block_bh(device->block); in dasd_generic_shutdown()
3823 dasd_schedule_device_bh(device); in dasd_generic_shutdown()
3825 wait_event(shutdown_waitq, _wait_for_empty_queues(device)); in dasd_generic_shutdown()