Lines Matching refs:device
103 struct dasd_device *device; in dasd_alloc_device() local
105 device = kzalloc(sizeof(struct dasd_device), GFP_ATOMIC); in dasd_alloc_device()
106 if (!device) in dasd_alloc_device()
110 device->ccw_mem = (void *) __get_free_pages(GFP_ATOMIC | GFP_DMA, 1); in dasd_alloc_device()
111 if (!device->ccw_mem) { in dasd_alloc_device()
112 kfree(device); in dasd_alloc_device()
116 device->erp_mem = (void *) get_zeroed_page(GFP_ATOMIC | GFP_DMA); in dasd_alloc_device()
117 if (!device->erp_mem) { in dasd_alloc_device()
118 free_pages((unsigned long) device->ccw_mem, 1); in dasd_alloc_device()
119 kfree(device); in dasd_alloc_device()
123 device->ese_mem = (void *)__get_free_pages(GFP_ATOMIC | GFP_DMA, 1); in dasd_alloc_device()
124 if (!device->ese_mem) { in dasd_alloc_device()
125 free_page((unsigned long) device->erp_mem); in dasd_alloc_device()
126 free_pages((unsigned long) device->ccw_mem, 1); in dasd_alloc_device()
127 kfree(device); in dasd_alloc_device()
131 dasd_init_chunklist(&device->ccw_chunks, device->ccw_mem, PAGE_SIZE*2); in dasd_alloc_device()
132 dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE); in dasd_alloc_device()
133 dasd_init_chunklist(&device->ese_chunks, device->ese_mem, PAGE_SIZE * 2); in dasd_alloc_device()
134 spin_lock_init(&device->mem_lock); in dasd_alloc_device()
135 atomic_set(&device->tasklet_scheduled, 0); in dasd_alloc_device()
136 tasklet_init(&device->tasklet, dasd_device_tasklet, in dasd_alloc_device()
137 (unsigned long) device); in dasd_alloc_device()
138 INIT_LIST_HEAD(&device->ccw_queue); in dasd_alloc_device()
139 timer_setup(&device->timer, dasd_device_timeout, 0); in dasd_alloc_device()
140 INIT_WORK(&device->kick_work, do_kick_device); in dasd_alloc_device()
141 INIT_WORK(&device->restore_device, do_restore_device); in dasd_alloc_device()
142 INIT_WORK(&device->reload_device, do_reload_device); in dasd_alloc_device()
143 INIT_WORK(&device->requeue_requests, do_requeue_requests); in dasd_alloc_device()
144 device->state = DASD_STATE_NEW; in dasd_alloc_device()
145 device->target = DASD_STATE_NEW; in dasd_alloc_device()
146 mutex_init(&device->state_mutex); in dasd_alloc_device()
147 spin_lock_init(&device->profile.lock); in dasd_alloc_device()
148 return device; in dasd_alloc_device()
154 void dasd_free_device(struct dasd_device *device) in dasd_free_device() argument
156 kfree(device->private); in dasd_free_device()
157 free_pages((unsigned long) device->ese_mem, 1); in dasd_free_device()
158 free_page((unsigned long) device->erp_mem); in dasd_free_device()
159 free_pages((unsigned long) device->ccw_mem, 1); in dasd_free_device()
160 kfree(device); in dasd_free_device()
202 static int dasd_state_new_to_known(struct dasd_device *device) in dasd_state_new_to_known() argument
210 dasd_get_device(device); in dasd_state_new_to_known()
212 if (device->block) { in dasd_state_new_to_known()
213 rc = dasd_alloc_queue(device->block); in dasd_state_new_to_known()
215 dasd_put_device(device); in dasd_state_new_to_known()
219 device->state = DASD_STATE_KNOWN; in dasd_state_new_to_known()
226 static int dasd_state_known_to_new(struct dasd_device *device) in dasd_state_known_to_new() argument
229 dasd_eer_disable(device); in dasd_state_known_to_new()
230 device->state = DASD_STATE_NEW; in dasd_state_known_to_new()
232 if (device->block) in dasd_state_known_to_new()
233 dasd_free_queue(device->block); in dasd_state_known_to_new()
236 dasd_put_device(device); in dasd_state_known_to_new()
256 static int dasd_state_known_to_basic(struct dasd_device *device) in dasd_state_known_to_basic() argument
258 struct dasd_block *block = device->block; in dasd_state_known_to_basic()
271 dasd_profile_on(&device->block->profile); in dasd_state_known_to_basic()
273 device->debugfs_dentry = in dasd_state_known_to_basic()
274 dasd_debugfs_setup(dev_name(&device->cdev->dev), in dasd_state_known_to_basic()
276 dasd_profile_init(&device->profile, device->debugfs_dentry); in dasd_state_known_to_basic()
277 dasd_hosts_init(device->debugfs_dentry, device); in dasd_state_known_to_basic()
280 device->debug_area = debug_register(dev_name(&device->cdev->dev), 4, 1, in dasd_state_known_to_basic()
282 debug_register_view(device->debug_area, &debug_sprintf_view); in dasd_state_known_to_basic()
283 debug_set_level(device->debug_area, DBF_WARNING); in dasd_state_known_to_basic()
284 DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created"); in dasd_state_known_to_basic()
286 device->state = DASD_STATE_BASIC; in dasd_state_known_to_basic()
294 static int dasd_state_basic_to_known(struct dasd_device *device) in dasd_state_basic_to_known() argument
298 if (device->discipline->basic_to_known) { in dasd_state_basic_to_known()
299 rc = device->discipline->basic_to_known(device); in dasd_state_basic_to_known()
304 if (device->block) { in dasd_state_basic_to_known()
305 dasd_profile_exit(&device->block->profile); in dasd_state_basic_to_known()
306 debugfs_remove(device->block->debugfs_dentry); in dasd_state_basic_to_known()
307 dasd_gendisk_free(device->block); in dasd_state_basic_to_known()
308 dasd_block_clear_timer(device->block); in dasd_state_basic_to_known()
310 rc = dasd_flush_device_queue(device); in dasd_state_basic_to_known()
313 dasd_device_clear_timer(device); in dasd_state_basic_to_known()
314 dasd_profile_exit(&device->profile); in dasd_state_basic_to_known()
315 dasd_hosts_exit(device); in dasd_state_basic_to_known()
316 debugfs_remove(device->debugfs_dentry); in dasd_state_basic_to_known()
317 DBF_DEV_EVENT(DBF_EMERG, device, "%p debug area deleted", device); in dasd_state_basic_to_known()
318 if (device->debug_area != NULL) { in dasd_state_basic_to_known()
319 debug_unregister(device->debug_area); in dasd_state_basic_to_known()
320 device->debug_area = NULL; in dasd_state_basic_to_known()
322 device->state = DASD_STATE_KNOWN; in dasd_state_basic_to_known()
340 static int dasd_state_basic_to_ready(struct dasd_device *device) in dasd_state_basic_to_ready() argument
347 block = device->block; in dasd_state_basic_to_ready()
354 device->state = DASD_STATE_UNFMT; in dasd_state_basic_to_ready()
355 disk = device->block->gdp; in dasd_state_basic_to_ready()
362 if (device->discipline->setup_blk_queue) in dasd_state_basic_to_ready()
363 device->discipline->setup_blk_queue(block); in dasd_state_basic_to_ready()
366 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
369 device->state = DASD_STATE_BASIC; in dasd_state_basic_to_ready()
373 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
376 if (device->discipline->basic_to_ready) in dasd_state_basic_to_ready()
377 rc = device->discipline->basic_to_ready(device); in dasd_state_basic_to_ready()
382 int _wait_for_empty_queues(struct dasd_device *device) in _wait_for_empty_queues() argument
384 if (device->block) in _wait_for_empty_queues()
385 return list_empty(&device->ccw_queue) && in _wait_for_empty_queues()
386 list_empty(&device->block->ccw_queue); in _wait_for_empty_queues()
388 return list_empty(&device->ccw_queue); in _wait_for_empty_queues()
396 static int dasd_state_ready_to_basic(struct dasd_device *device) in dasd_state_ready_to_basic() argument
400 device->state = DASD_STATE_BASIC; in dasd_state_ready_to_basic()
401 if (device->block) { in dasd_state_ready_to_basic()
402 struct dasd_block *block = device->block; in dasd_state_ready_to_basic()
405 device->state = DASD_STATE_READY; in dasd_state_ready_to_basic()
419 static int dasd_state_unfmt_to_basic(struct dasd_device *device) in dasd_state_unfmt_to_basic() argument
421 device->state = DASD_STATE_BASIC; in dasd_state_unfmt_to_basic()
431 dasd_state_ready_to_online(struct dasd_device * device) in dasd_state_ready_to_online() argument
437 device->state = DASD_STATE_ONLINE; in dasd_state_ready_to_online()
438 if (device->block) { in dasd_state_ready_to_online()
439 dasd_schedule_block_bh(device->block); in dasd_state_ready_to_online()
440 if ((device->features & DASD_FEATURE_USERAW)) { in dasd_state_ready_to_online()
441 disk = device->block->gdp; in dasd_state_ready_to_online()
445 disk = device->block->bdev->bd_disk; in dasd_state_ready_to_online()
457 static int dasd_state_online_to_ready(struct dasd_device *device) in dasd_state_online_to_ready() argument
464 if (device->discipline->online_to_ready) { in dasd_state_online_to_ready()
465 rc = device->discipline->online_to_ready(device); in dasd_state_online_to_ready()
470 device->state = DASD_STATE_READY; in dasd_state_online_to_ready()
471 if (device->block && !(device->features & DASD_FEATURE_USERAW)) { in dasd_state_online_to_ready()
472 disk = device->block->bdev->bd_disk; in dasd_state_online_to_ready()
484 static int dasd_increase_state(struct dasd_device *device) in dasd_increase_state() argument
489 if (device->state == DASD_STATE_NEW && in dasd_increase_state()
490 device->target >= DASD_STATE_KNOWN) in dasd_increase_state()
491 rc = dasd_state_new_to_known(device); in dasd_increase_state()
494 device->state == DASD_STATE_KNOWN && in dasd_increase_state()
495 device->target >= DASD_STATE_BASIC) in dasd_increase_state()
496 rc = dasd_state_known_to_basic(device); in dasd_increase_state()
499 device->state == DASD_STATE_BASIC && in dasd_increase_state()
500 device->target >= DASD_STATE_READY) in dasd_increase_state()
501 rc = dasd_state_basic_to_ready(device); in dasd_increase_state()
504 device->state == DASD_STATE_UNFMT && in dasd_increase_state()
505 device->target > DASD_STATE_UNFMT) in dasd_increase_state()
509 device->state == DASD_STATE_READY && in dasd_increase_state()
510 device->target >= DASD_STATE_ONLINE) in dasd_increase_state()
511 rc = dasd_state_ready_to_online(device); in dasd_increase_state()
519 static int dasd_decrease_state(struct dasd_device *device) in dasd_decrease_state() argument
524 if (device->state == DASD_STATE_ONLINE && in dasd_decrease_state()
525 device->target <= DASD_STATE_READY) in dasd_decrease_state()
526 rc = dasd_state_online_to_ready(device); in dasd_decrease_state()
529 device->state == DASD_STATE_READY && in dasd_decrease_state()
530 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
531 rc = dasd_state_ready_to_basic(device); in dasd_decrease_state()
534 device->state == DASD_STATE_UNFMT && in dasd_decrease_state()
535 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
536 rc = dasd_state_unfmt_to_basic(device); in dasd_decrease_state()
539 device->state == DASD_STATE_BASIC && in dasd_decrease_state()
540 device->target <= DASD_STATE_KNOWN) in dasd_decrease_state()
541 rc = dasd_state_basic_to_known(device); in dasd_decrease_state()
544 device->state == DASD_STATE_KNOWN && in dasd_decrease_state()
545 device->target <= DASD_STATE_NEW) in dasd_decrease_state()
546 rc = dasd_state_known_to_new(device); in dasd_decrease_state()
554 static void dasd_change_state(struct dasd_device *device) in dasd_change_state() argument
558 if (device->state == device->target) in dasd_change_state()
561 if (device->state < device->target) in dasd_change_state()
562 rc = dasd_increase_state(device); in dasd_change_state()
564 rc = dasd_decrease_state(device); in dasd_change_state()
568 device->target = device->state; in dasd_change_state()
571 kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); in dasd_change_state()
573 if (device->state == device->target) in dasd_change_state()
585 struct dasd_device *device = container_of(work, struct dasd_device, kick_work); in do_kick_device() local
586 mutex_lock(&device->state_mutex); in do_kick_device()
587 dasd_change_state(device); in do_kick_device()
588 mutex_unlock(&device->state_mutex); in do_kick_device()
589 dasd_schedule_device_bh(device); in do_kick_device()
590 dasd_put_device(device); in do_kick_device()
593 void dasd_kick_device(struct dasd_device *device) in dasd_kick_device() argument
595 dasd_get_device(device); in dasd_kick_device()
597 if (!schedule_work(&device->kick_work)) in dasd_kick_device()
598 dasd_put_device(device); in dasd_kick_device()
608 struct dasd_device *device = container_of(work, struct dasd_device, in do_reload_device() local
610 device->discipline->reload(device); in do_reload_device()
611 dasd_put_device(device); in do_reload_device()
614 void dasd_reload_device(struct dasd_device *device) in dasd_reload_device() argument
616 dasd_get_device(device); in dasd_reload_device()
618 if (!schedule_work(&device->reload_device)) in dasd_reload_device()
619 dasd_put_device(device); in dasd_reload_device()
629 struct dasd_device *device = container_of(work, struct dasd_device, in do_restore_device() local
631 device->cdev->drv->restore(device->cdev); in do_restore_device()
632 dasd_put_device(device); in do_restore_device()
635 void dasd_restore_device(struct dasd_device *device) in dasd_restore_device() argument
637 dasd_get_device(device); in dasd_restore_device()
639 if (!schedule_work(&device->restore_device)) in dasd_restore_device()
640 dasd_put_device(device); in dasd_restore_device()
646 void dasd_set_target_state(struct dasd_device *device, int target) in dasd_set_target_state() argument
648 dasd_get_device(device); in dasd_set_target_state()
649 mutex_lock(&device->state_mutex); in dasd_set_target_state()
653 if (device->target != target) { in dasd_set_target_state()
654 if (device->state == target) in dasd_set_target_state()
656 device->target = target; in dasd_set_target_state()
658 if (device->state != device->target) in dasd_set_target_state()
659 dasd_change_state(device); in dasd_set_target_state()
660 mutex_unlock(&device->state_mutex); in dasd_set_target_state()
661 dasd_put_device(device); in dasd_set_target_state()
668 static inline int _wait_for_device(struct dasd_device *device) in _wait_for_device() argument
670 return (device->state == device->target); in _wait_for_device()
673 void dasd_enable_device(struct dasd_device *device) in dasd_enable_device() argument
675 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_enable_device()
676 if (device->state <= DASD_STATE_KNOWN) in dasd_enable_device()
678 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_enable_device()
680 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_enable_device()
682 dasd_reload_device(device); in dasd_enable_device()
683 if (device->discipline->kick_validate) in dasd_enable_device()
684 device->discipline->kick_validate(device); in dasd_enable_device()
709 struct dasd_device *device; in dasd_profile_start() local
739 device = cqr->startdev; in dasd_profile_start()
740 if (!device->profile.data) in dasd_profile_start()
743 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_profile_start()
745 list_for_each(l, &device->ccw_queue) in dasd_profile_start()
748 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_profile_start()
750 spin_lock(&device->profile.lock); in dasd_profile_start()
751 device->profile.data->dasd_io_nr_req[counter]++; in dasd_profile_start()
753 device->profile.data->dasd_read_nr_req[counter]++; in dasd_profile_start()
754 spin_unlock(&device->profile.lock); in dasd_profile_start()
821 struct dasd_device *device; in dasd_profile_end() local
826 device = cqr->startdev; in dasd_profile_end()
829 device->profile.data)) in dasd_profile_end()
888 spin_lock(&device->profile.lock); in dasd_profile_end()
889 if (device->profile.data) { in dasd_profile_end()
890 data = device->profile.data; in dasd_profile_end()
895 dasd_profile_end_add_data(device->profile.data, in dasd_profile_end()
904 spin_unlock(&device->profile.lock); in dasd_profile_end()
1196 struct dasd_device *device; in dasd_hosts_show() local
1199 device = m->private; in dasd_hosts_show()
1200 dasd_get_device(device); in dasd_hosts_show()
1202 if (device->discipline->hosts_print) in dasd_hosts_show()
1203 rc = device->discipline->hosts_print(device, m); in dasd_hosts_show()
1205 dasd_put_device(device); in dasd_hosts_show()
1211 static void dasd_hosts_exit(struct dasd_device *device) in dasd_hosts_exit() argument
1213 debugfs_remove(device->hosts_dentry); in dasd_hosts_exit()
1214 device->hosts_dentry = NULL; in dasd_hosts_exit()
1218 struct dasd_device *device) in dasd_hosts_init() argument
1228 device, &dasd_hosts_fops); in dasd_hosts_init()
1230 device->hosts_dentry = pde; in dasd_hosts_init()
1234 struct dasd_device *device, in dasd_smalloc_request() argument
1248 spin_lock_irqsave(&device->mem_lock, flags); in dasd_smalloc_request()
1249 data = chunk = dasd_alloc_chunk(&device->ccw_chunks, size); in dasd_smalloc_request()
1250 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_smalloc_request()
1270 dasd_get_device(device); in dasd_smalloc_request()
1277 struct dasd_device *device) in dasd_fmalloc_request() argument
1291 spin_lock_irqsave(&device->mem_lock, flags); in dasd_fmalloc_request()
1292 cqr = dasd_alloc_chunk(&device->ese_chunks, size); in dasd_fmalloc_request()
1293 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_fmalloc_request()
1312 dasd_get_device(device); in dasd_fmalloc_request()
1318 void dasd_sfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_sfree_request() argument
1322 spin_lock_irqsave(&device->mem_lock, flags); in dasd_sfree_request()
1323 dasd_free_chunk(&device->ccw_chunks, cqr->mem_chunk); in dasd_sfree_request()
1324 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_sfree_request()
1325 dasd_put_device(device); in dasd_sfree_request()
1329 void dasd_ffree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_ffree_request() argument
1333 spin_lock_irqsave(&device->mem_lock, flags); in dasd_ffree_request()
1334 dasd_free_chunk(&device->ese_chunks, cqr); in dasd_ffree_request()
1335 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_ffree_request()
1336 dasd_put_device(device); in dasd_ffree_request()
1345 struct dasd_device *device; in dasd_check_cqr() local
1349 device = cqr->startdev; in dasd_check_cqr()
1350 if (strncmp((char *) &cqr->magic, device->discipline->ebcname, 4)) { in dasd_check_cqr()
1351 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_check_cqr()
1355 *(unsigned int *) device->discipline->name); in dasd_check_cqr()
1369 struct dasd_device *device; in dasd_term_IO() local
1378 device = (struct dasd_device *) cqr->startdev; in dasd_term_IO()
1380 rc = ccw_device_clear(device->cdev, (long) cqr); in dasd_term_IO()
1386 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_term_IO()
1391 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1404 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1412 dev_err(&device->cdev->dev, "An error occurred in the " in dasd_term_IO()
1419 dasd_schedule_device_bh(device); in dasd_term_IO()
1430 struct dasd_device *device; in dasd_start_IO() local
1440 device = (struct dasd_device *) cqr->startdev; in dasd_start_IO()
1443 test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags)) && in dasd_start_IO()
1445 DBF_DEV_EVENT(DBF_DEBUG, device, "start_IO: return request %p " in dasd_start_IO()
1454 dev_err(&device->cdev->dev, "An error occurred in the DASD " in dasd_start_IO()
1463 cqr->lpm &= dasd_path_get_opm(device); in dasd_start_IO()
1465 cqr->lpm = dasd_path_get_opm(device); in dasd_start_IO()
1475 rc = ccw_device_tm_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1478 rc = ccw_device_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1486 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1498 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_start_IO()
1501 } else if (cqr->lpm != dasd_path_get_opm(device)) { in dasd_start_IO()
1502 cqr->lpm = dasd_path_get_opm(device); in dasd_start_IO()
1503 DBF_DEV_EVENT(DBF_DEBUG, device, "%s", in dasd_start_IO()
1507 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1510 dasd_generic_last_path_gone(device); in dasd_start_IO()
1511 dasd_path_no_path(device); in dasd_start_IO()
1512 dasd_path_set_tbvpm(device, in dasd_start_IO()
1514 device->cdev)); in dasd_start_IO()
1518 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1522 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1527 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1534 dev_err(&device->cdev->dev, in dasd_start_IO()
1556 struct dasd_device *device; in dasd_device_timeout() local
1558 device = from_timer(device, t, timer); in dasd_device_timeout()
1559 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1561 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_device_timeout()
1562 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1563 dasd_schedule_device_bh(device); in dasd_device_timeout()
1569 void dasd_device_set_timer(struct dasd_device *device, int expires) in dasd_device_set_timer() argument
1572 del_timer(&device->timer); in dasd_device_set_timer()
1574 mod_timer(&device->timer, jiffies + expires); in dasd_device_set_timer()
1581 void dasd_device_clear_timer(struct dasd_device *device) in dasd_device_clear_timer() argument
1583 del_timer(&device->timer); in dasd_device_clear_timer()
1591 struct dasd_device *device; in dasd_handle_killed_request() local
1603 device = dasd_device_from_cdev_locked(cdev); in dasd_handle_killed_request()
1604 if (IS_ERR(device)) { in dasd_handle_killed_request()
1611 device != cqr->startdev || in dasd_handle_killed_request()
1616 dasd_put_device(device); in dasd_handle_killed_request()
1623 dasd_device_clear_timer(device); in dasd_handle_killed_request()
1624 dasd_schedule_device_bh(device); in dasd_handle_killed_request()
1625 dasd_put_device(device); in dasd_handle_killed_request()
1628 void dasd_generic_handle_state_change(struct dasd_device *device) in dasd_generic_handle_state_change() argument
1631 dasd_eer_snss(device); in dasd_generic_handle_state_change()
1633 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_generic_handle_state_change()
1634 dasd_schedule_device_bh(device); in dasd_generic_handle_state_change()
1635 if (device->block) { in dasd_generic_handle_state_change()
1636 dasd_schedule_block_bh(device->block); in dasd_generic_handle_state_change()
1637 if (device->block->request_queue) in dasd_generic_handle_state_change()
1638 blk_mq_run_hw_queues(device->block->request_queue, in dasd_generic_handle_state_change()
1653 struct dasd_device *device = NULL; in dasd_ese_needs_format() local
1658 device = block->base; in dasd_ese_needs_format()
1659 if (!device || !device->discipline->is_ese) in dasd_ese_needs_format()
1661 if (!device->discipline->is_ese(device)) in dasd_ese_needs_format()
1688 struct dasd_device *device; in dasd_int_handler() local
1701 device = cqr->startdev; in dasd_int_handler()
1703 dasd_device_clear_timer(device); in dasd_int_handler()
1705 dasd_schedule_device_bh(device); in dasd_int_handler()
1729 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1730 if (IS_ERR(device)) in dasd_int_handler()
1733 if (device->discipline == dasd_diag_discipline_pointer) { in dasd_int_handler()
1734 dasd_put_device(device); in dasd_int_handler()
1756 dasd_generic_space_exhaust(device, cqr); in dasd_int_handler()
1757 device->discipline->ext_pool_exhaust(device, cqr); in dasd_int_handler()
1758 dasd_put_device(device); in dasd_int_handler()
1763 device->discipline->dump_sense_dbf(device, irb, "int"); in dasd_int_handler()
1765 if (device->features & DASD_FEATURE_ERPLOG) in dasd_int_handler()
1766 device->discipline->dump_sense(device, cqr, irb); in dasd_int_handler()
1767 device->discipline->check_for_device_change(device, cqr, irb); in dasd_int_handler()
1768 dasd_put_device(device); in dasd_int_handler()
1773 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1774 if (!IS_ERR(device)) { in dasd_int_handler()
1775 device->discipline->check_attention(device, in dasd_int_handler()
1777 dasd_put_device(device); in dasd_int_handler()
1784 device = (struct dasd_device *) cqr->startdev; in dasd_int_handler()
1785 if (!device || in dasd_int_handler()
1786 strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { in dasd_int_handler()
1799 device->discipline->ese_read(cqr, irb); in dasd_int_handler()
1802 dasd_device_clear_timer(device); in dasd_int_handler()
1803 dasd_schedule_device_bh(device); in dasd_int_handler()
1806 fcqr = device->discipline->ese_format(device, cqr, irb); in dasd_int_handler()
1817 dasd_schedule_device_bh(device); in dasd_int_handler()
1822 list_add(&fcqr->devlist, &device->ccw_queue); in dasd_int_handler()
1823 dasd_schedule_device_bh(device); in dasd_int_handler()
1832 dasd_device_clear_timer(device); in dasd_int_handler()
1834 dasd_schedule_device_bh(device); in dasd_int_handler()
1840 DBF_DEV_EVENT(DBF_DEBUG, device, "invalid status: bus_id %s, " in dasd_int_handler()
1853 if (cqr->devlist.next != &device->ccw_queue) { in dasd_int_handler()
1863 device->discipline->handle_hpf_error) in dasd_int_handler()
1864 device->discipline->handle_hpf_error(device, irb); in dasd_int_handler()
1871 if (cqr->lpm == dasd_path_get_opm(device)) in dasd_int_handler()
1872 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_int_handler()
1877 cqr->lpm = dasd_path_get_opm(device); in dasd_int_handler()
1884 (!device->stopped)) { in dasd_int_handler()
1885 if (device->discipline->start_IO(next) == 0) in dasd_int_handler()
1889 dasd_device_set_timer(device, expires); in dasd_int_handler()
1891 dasd_device_clear_timer(device); in dasd_int_handler()
1892 dasd_schedule_device_bh(device); in dasd_int_handler()
1898 struct dasd_device *device; in dasd_generic_uc_handler() local
1900 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_uc_handler()
1902 if (IS_ERR(device)) in dasd_generic_uc_handler()
1904 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || in dasd_generic_uc_handler()
1905 device->state != device->target || in dasd_generic_uc_handler()
1906 !device->discipline->check_for_device_change){ in dasd_generic_uc_handler()
1907 dasd_put_device(device); in dasd_generic_uc_handler()
1910 if (device->discipline->dump_sense_dbf) in dasd_generic_uc_handler()
1911 device->discipline->dump_sense_dbf(device, irb, "uc"); in dasd_generic_uc_handler()
1912 device->discipline->check_for_device_change(device, NULL, irb); in dasd_generic_uc_handler()
1913 dasd_put_device(device); in dasd_generic_uc_handler()
1923 static void __dasd_device_recovery(struct dasd_device *device, in __dasd_device_recovery() argument
1935 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_recovery()
1948 static void __dasd_device_process_ccw_queue(struct dasd_device *device, in __dasd_device_process_ccw_queue() argument
1955 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_process_ccw_queue()
1964 __dasd_device_recovery(device, cqr); in __dasd_device_process_ccw_queue()
1971 static void __dasd_process_cqr(struct dasd_device *device, in __dasd_process_cqr() argument
1989 dev_err(&device->cdev->dev, in __dasd_process_cqr()
2002 static void __dasd_device_process_final_queue(struct dasd_device *device, in __dasd_device_process_final_queue() argument
2014 __dasd_process_cqr(device, cqr); in __dasd_device_process_final_queue()
2017 __dasd_process_cqr(device, cqr); in __dasd_device_process_final_queue()
2027 static void __dasd_device_check_expire(struct dasd_device *device) in __dasd_device_check_expire() argument
2031 if (list_empty(&device->ccw_queue)) in __dasd_device_check_expire()
2033 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_check_expire()
2036 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_check_expire()
2043 if (device->discipline->term_IO(cqr) != 0) { in __dasd_device_check_expire()
2045 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
2050 dasd_device_set_timer(device, 5*HZ); in __dasd_device_check_expire()
2052 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
2063 static int __dasd_device_is_unusable(struct dasd_device *device, in __dasd_device_is_unusable() argument
2068 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) && in __dasd_device_is_unusable()
2069 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_is_unusable()
2076 if (device->stopped) { in __dasd_device_is_unusable()
2077 if (device->stopped & mask) { in __dasd_device_is_unusable()
2095 static void __dasd_device_start_head(struct dasd_device *device) in __dasd_device_start_head() argument
2100 if (list_empty(&device->ccw_queue)) in __dasd_device_start_head()
2102 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_start_head()
2106 if (__dasd_device_is_unusable(device, cqr)) { in __dasd_device_start_head()
2109 dasd_schedule_device_bh(device); in __dasd_device_start_head()
2113 rc = device->discipline->start_IO(cqr); in __dasd_device_start_head()
2115 dasd_device_set_timer(device, cqr->expires); in __dasd_device_start_head()
2117 dasd_schedule_device_bh(device); in __dasd_device_start_head()
2120 dasd_device_set_timer(device, 50); in __dasd_device_start_head()
2123 static void __dasd_device_check_path_events(struct dasd_device *device) in __dasd_device_check_path_events() argument
2127 if (!dasd_path_get_tbvpm(device)) in __dasd_device_check_path_events()
2130 if (device->stopped & in __dasd_device_check_path_events()
2133 rc = device->discipline->pe_handler(device, in __dasd_device_check_path_events()
2134 dasd_path_get_tbvpm(device)); in __dasd_device_check_path_events()
2136 dasd_device_set_timer(device, 50); in __dasd_device_check_path_events()
2138 dasd_path_clear_all_verify(device); in __dasd_device_check_path_events()
2151 int dasd_flush_device_queue(struct dasd_device *device) in dasd_flush_device_queue() argument
2158 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
2160 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_flush_device_queue()
2164 rc = device->discipline->term_IO(cqr); in dasd_flush_device_queue()
2167 dev_err(&device->cdev->dev, in dasd_flush_device_queue()
2184 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
2197 __dasd_device_process_final_queue(device, &flush_queue); in dasd_flush_device_queue()
2207 struct dasd_device *device = (struct dasd_device *) data; in dasd_device_tasklet() local
2210 atomic_set (&device->tasklet_scheduled, 0); in dasd_device_tasklet()
2212 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2214 __dasd_device_check_expire(device); in dasd_device_tasklet()
2216 __dasd_device_process_ccw_queue(device, &final_queue); in dasd_device_tasklet()
2217 __dasd_device_check_path_events(device); in dasd_device_tasklet()
2218 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2220 __dasd_device_process_final_queue(device, &final_queue); in dasd_device_tasklet()
2221 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2223 __dasd_device_start_head(device); in dasd_device_tasklet()
2224 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2227 dasd_put_device(device); in dasd_device_tasklet()
2233 void dasd_schedule_device_bh(struct dasd_device *device) in dasd_schedule_device_bh() argument
2236 if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) in dasd_schedule_device_bh()
2238 dasd_get_device(device); in dasd_schedule_device_bh()
2239 tasklet_hi_schedule(&device->tasklet); in dasd_schedule_device_bh()
2243 void dasd_device_set_stop_bits(struct dasd_device *device, int bits) in dasd_device_set_stop_bits() argument
2245 device->stopped |= bits; in dasd_device_set_stop_bits()
2249 void dasd_device_remove_stop_bits(struct dasd_device *device, int bits) in dasd_device_remove_stop_bits() argument
2251 device->stopped &= ~bits; in dasd_device_remove_stop_bits()
2252 if (!device->stopped) in dasd_device_remove_stop_bits()
2263 struct dasd_device *device; in dasd_add_request_head() local
2266 device = cqr->startdev; in dasd_add_request_head()
2267 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2269 list_add(&cqr->devlist, &device->ccw_queue); in dasd_add_request_head()
2271 dasd_schedule_device_bh(device); in dasd_add_request_head()
2272 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2282 struct dasd_device *device; in dasd_add_request_tail() local
2285 device = cqr->startdev; in dasd_add_request_tail()
2286 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2288 list_add_tail(&cqr->devlist, &device->ccw_queue); in dasd_add_request_tail()
2290 dasd_schedule_device_bh(device); in dasd_add_request_tail()
2291 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2309 struct dasd_device *device; in _wait_for_wakeup() local
2312 device = cqr->startdev; in _wait_for_wakeup()
2313 spin_lock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2315 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2324 struct dasd_device *device; in __dasd_sleep_on_erp() local
2329 device = cqr->startdev; in __dasd_sleep_on_erp()
2332 device->discipline->handle_terminated_request(cqr); in __dasd_sleep_on_erp()
2336 erp_fn = device->discipline->erp_action(cqr); in __dasd_sleep_on_erp()
2343 __dasd_process_erp(device, cqr); in __dasd_sleep_on_erp()
2363 struct dasd_device *device; in _dasd_sleep_on() local
2370 device = maincqr->startdev; in _dasd_sleep_on()
2380 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on()
2387 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on()
2389 (!dasd_eer_enabled(device))) { in _dasd_sleep_on()
2398 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in _dasd_sleep_on()
2410 generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2417 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2467 struct dasd_device *device; in _dasd_sleep_on_queue() local
2474 device = cqr->startdev; in _dasd_sleep_on_queue()
2478 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on_queue()
2485 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on_queue()
2487 !dasd_eer_enabled(device)) { in _dasd_sleep_on_queue()
2496 generic_waitq, !device->stopped); in _dasd_sleep_on_queue()
2503 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on_queue()
2592 static inline int _dasd_term_running_cqr(struct dasd_device *device) in _dasd_term_running_cqr() argument
2597 if (list_empty(&device->ccw_queue)) in _dasd_term_running_cqr()
2599 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in _dasd_term_running_cqr()
2600 rc = device->discipline->term_IO(cqr); in _dasd_term_running_cqr()
2613 struct dasd_device *device; in dasd_sleep_on_immediatly() local
2616 device = cqr->startdev; in dasd_sleep_on_immediatly()
2617 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in dasd_sleep_on_immediatly()
2623 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2624 rc = _dasd_term_running_cqr(device); in dasd_sleep_on_immediatly()
2626 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2636 list_add(&cqr->devlist, device->ccw_queue.next); in dasd_sleep_on_immediatly()
2639 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2641 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2653 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2654 if (device->block) in dasd_sleep_on_immediatly()
2655 dasd_schedule_block_bh(device->block); in dasd_sleep_on_immediatly()
2672 struct dasd_device *device = cqr->startdev; in __dasd_cancel_req() local
2682 rc = device->discipline->term_IO(cqr); in __dasd_cancel_req()
2684 dev_err(&device->cdev->dev, in __dasd_cancel_req()
2694 dasd_schedule_device_bh(device); in __dasd_cancel_req()
2700 struct dasd_device *device = cqr->startdev; in dasd_cancel_req() local
2704 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2706 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2757 static void __dasd_process_erp(struct dasd_device *device, in __dasd_process_erp() argument
2763 DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful"); in __dasd_process_erp()
2765 dev_err(&device->cdev->dev, "ERP failed for the DASD\n"); in __dasd_process_erp()
2766 erp_fn = device->discipline->erp_postaction(cqr); in __dasd_process_erp()
3197 struct dasd_device *device; in dasd_times_out() local
3207 device = cqr->startdev ? cqr->startdev : block->base; in dasd_times_out()
3208 if (!device->blk_timeout) { in dasd_times_out()
3212 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_times_out()
3217 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3254 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3461 int dasd_device_is_ro(struct dasd_device *device) in dasd_device_is_ro() argument
3469 ccw_device_get_id(device->cdev, &dev_id); in dasd_device_is_ro()
3525 void dasd_generic_free_discipline(struct dasd_device *device) in dasd_generic_free_discipline() argument
3528 if (device->discipline) { in dasd_generic_free_discipline()
3529 if (device->discipline->uncheck_device) in dasd_generic_free_discipline()
3530 device->discipline->uncheck_device(device); in dasd_generic_free_discipline()
3531 module_put(device->discipline->owner); in dasd_generic_free_discipline()
3532 device->discipline = NULL; in dasd_generic_free_discipline()
3534 if (device->base_discipline) { in dasd_generic_free_discipline()
3535 module_put(device->base_discipline->owner); in dasd_generic_free_discipline()
3536 device->base_discipline = NULL; in dasd_generic_free_discipline()
3547 struct dasd_device *device; in dasd_generic_remove() local
3550 device = dasd_device_from_cdev(cdev); in dasd_generic_remove()
3551 if (IS_ERR(device)) { in dasd_generic_remove()
3555 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) && in dasd_generic_remove()
3556 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_remove()
3558 dasd_put_device(device); in dasd_generic_remove()
3567 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_remove()
3570 block = device->block; in dasd_generic_remove()
3571 dasd_delete_device(device); in dasd_generic_remove()
3592 struct dasd_device *device; in dasd_generic_set_online() local
3597 device = dasd_create_device(cdev); in dasd_generic_set_online()
3598 if (IS_ERR(device)) in dasd_generic_set_online()
3599 return PTR_ERR(device); in dasd_generic_set_online()
3602 if (device->features & DASD_FEATURE_USEDIAG) { in dasd_generic_set_online()
3612 dasd_delete_device(device); in dasd_generic_set_online()
3621 dasd_delete_device(device); in dasd_generic_set_online()
3627 dasd_delete_device(device); in dasd_generic_set_online()
3632 dasd_delete_device(device); in dasd_generic_set_online()
3635 device->base_discipline = base_discipline; in dasd_generic_set_online()
3636 device->discipline = discipline; in dasd_generic_set_online()
3639 rc = discipline->check_device(device); in dasd_generic_set_online()
3645 dasd_delete_device(device); in dasd_generic_set_online()
3649 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_generic_set_online()
3650 if (device->state <= DASD_STATE_KNOWN) { in dasd_generic_set_online()
3654 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_online()
3655 if (device->block) in dasd_generic_set_online()
3656 dasd_free_block(device->block); in dasd_generic_set_online()
3657 dasd_delete_device(device); in dasd_generic_set_online()
3662 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_generic_set_online()
3664 dasd_put_device(device); in dasd_generic_set_online()
3671 struct dasd_device *device; in dasd_generic_set_offline() local
3678 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_set_offline()
3679 if (IS_ERR(device)) { in dasd_generic_set_offline()
3681 return PTR_ERR(device); in dasd_generic_set_offline()
3690 if (device->block) { in dasd_generic_set_offline()
3691 max_count = device->block->bdev ? 0 : -1; in dasd_generic_set_offline()
3692 open_count = atomic_read(&device->block->open_count); in dasd_generic_set_offline()
3711 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3712 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3714 &device->flags); in dasd_generic_set_offline()
3720 set_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3727 if (test_and_clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags) && in dasd_generic_set_offline()
3728 !test_and_set_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3737 if (device->block) { in dasd_generic_set_offline()
3738 rc = fsync_bdev(device->block->bdev); in dasd_generic_set_offline()
3742 dasd_schedule_device_bh(device); in dasd_generic_set_offline()
3744 _wait_for_empty_queues(device)); in dasd_generic_set_offline()
3756 if (!test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3760 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3764 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_offline()
3766 block = device->block; in dasd_generic_set_offline()
3767 dasd_delete_device(device); in dasd_generic_set_offline()
3780 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3781 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3783 dasd_put_device(device); in dasd_generic_set_offline()
3789 int dasd_generic_last_path_gone(struct dasd_device *device) in dasd_generic_last_path_gone() argument
3793 dev_warn(&device->cdev->dev, "No operational channel path is left " in dasd_generic_last_path_gone()
3795 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "last path gone"); in dasd_generic_last_path_gone()
3797 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_last_path_gone()
3799 if (device->state < DASD_STATE_BASIC) in dasd_generic_last_path_gone()
3802 list_for_each_entry(cqr, &device->ccw_queue, devlist) in dasd_generic_last_path_gone()
3808 dasd_device_set_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_last_path_gone()
3809 dasd_device_clear_timer(device); in dasd_generic_last_path_gone()
3810 dasd_schedule_device_bh(device); in dasd_generic_last_path_gone()
3815 int dasd_generic_path_operational(struct dasd_device *device) in dasd_generic_path_operational() argument
3817 dev_info(&device->cdev->dev, "A channel path to the device has become " in dasd_generic_path_operational()
3819 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "path operational"); in dasd_generic_path_operational()
3820 dasd_device_remove_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_path_operational()
3821 if (device->stopped & DASD_UNRESUMED_PM) { in dasd_generic_path_operational()
3822 dasd_device_remove_stop_bits(device, DASD_UNRESUMED_PM); in dasd_generic_path_operational()
3823 dasd_restore_device(device); in dasd_generic_path_operational()
3826 dasd_schedule_device_bh(device); in dasd_generic_path_operational()
3827 if (device->block) { in dasd_generic_path_operational()
3828 dasd_schedule_block_bh(device->block); in dasd_generic_path_operational()
3829 if (device->block->request_queue) in dasd_generic_path_operational()
3830 blk_mq_run_hw_queues(device->block->request_queue, in dasd_generic_path_operational()
3834 if (!device->stopped) in dasd_generic_path_operational()
3843 struct dasd_device *device; in dasd_generic_notify() local
3846 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_notify()
3847 if (IS_ERR(device)) in dasd_generic_notify()
3854 dasd_path_no_path(device); in dasd_generic_notify()
3855 ret = dasd_generic_last_path_gone(device); in dasd_generic_notify()
3859 if (dasd_path_get_opm(device)) in dasd_generic_notify()
3860 ret = dasd_generic_path_operational(device); in dasd_generic_notify()
3863 dasd_put_device(device); in dasd_generic_notify()
3870 struct dasd_device *device; in dasd_generic_path_event() local
3873 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_path_event()
3874 if (IS_ERR(device)) in dasd_generic_path_event()
3877 oldopm = dasd_path_get_opm(device); in dasd_generic_path_event()
3880 dasd_path_notoper(device, chp); in dasd_generic_path_event()
3883 dasd_path_available(device, chp); in dasd_generic_path_event()
3884 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3887 if (!dasd_path_is_operational(device, chp) && in dasd_generic_path_event()
3888 !dasd_path_need_verify(device, chp)) { in dasd_generic_path_event()
3894 dasd_path_available(device, chp); in dasd_generic_path_event()
3895 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3897 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_generic_path_event()
3899 if (device->discipline->kick_validate) in dasd_generic_path_event()
3900 device->discipline->kick_validate(device); in dasd_generic_path_event()
3903 hpfpm = dasd_path_get_hpfpm(device); in dasd_generic_path_event()
3904 ifccpm = dasd_path_get_ifccpm(device); in dasd_generic_path_event()
3905 if (!dasd_path_get_opm(device) && hpfpm) { in dasd_generic_path_event()
3911 if (device->discipline->disable_hpf) in dasd_generic_path_event()
3912 device->discipline->disable_hpf(device); in dasd_generic_path_event()
3913 dasd_device_set_stop_bits(device, DASD_STOPPED_NOT_ACC); in dasd_generic_path_event()
3914 dasd_path_set_tbvpm(device, hpfpm); in dasd_generic_path_event()
3915 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3916 dasd_schedule_requeue(device); in dasd_generic_path_event()
3917 } else if (!dasd_path_get_opm(device) && ifccpm) { in dasd_generic_path_event()
3923 dasd_path_set_tbvpm(device, ifccpm); in dasd_generic_path_event()
3924 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3926 if (oldopm && !dasd_path_get_opm(device) && !hpfpm && !ifccpm) { in dasd_generic_path_event()
3927 dev_warn(&device->cdev->dev, in dasd_generic_path_event()
3929 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_generic_path_event()
3931 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_path_event()
3932 dasd_device_set_stop_bits(device, in dasd_generic_path_event()
3935 dasd_put_device(device); in dasd_generic_path_event()
3939 int dasd_generic_verify_path(struct dasd_device *device, __u8 lpm) in dasd_generic_verify_path() argument
3941 if (!dasd_path_get_opm(device) && lpm) { in dasd_generic_verify_path()
3942 dasd_path_set_opm(device, lpm); in dasd_generic_verify_path()
3943 dasd_generic_path_operational(device); in dasd_generic_verify_path()
3945 dasd_path_add_opm(device, lpm); in dasd_generic_verify_path()
3950 void dasd_generic_space_exhaust(struct dasd_device *device, in dasd_generic_space_exhaust() argument
3953 dasd_eer_write(device, NULL, DASD_EER_NOSPC); in dasd_generic_space_exhaust()
3955 if (device->state < DASD_STATE_BASIC) in dasd_generic_space_exhaust()
3963 dasd_device_set_stop_bits(device, DASD_STOPPED_NOSPC); in dasd_generic_space_exhaust()
3964 dasd_device_clear_timer(device); in dasd_generic_space_exhaust()
3965 dasd_schedule_device_bh(device); in dasd_generic_space_exhaust()
3969 void dasd_generic_space_avail(struct dasd_device *device) in dasd_generic_space_avail() argument
3971 dev_info(&device->cdev->dev, "Extent pool space is available\n"); in dasd_generic_space_avail()
3972 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "space available"); in dasd_generic_space_avail()
3974 dasd_device_remove_stop_bits(device, DASD_STOPPED_NOSPC); in dasd_generic_space_avail()
3975 dasd_schedule_device_bh(device); in dasd_generic_space_avail()
3977 if (device->block) { in dasd_generic_space_avail()
3978 dasd_schedule_block_bh(device->block); in dasd_generic_space_avail()
3979 if (device->block->request_queue) in dasd_generic_space_avail()
3980 blk_mq_run_hw_queues(device->block->request_queue, true); in dasd_generic_space_avail()
3982 if (!device->stopped) in dasd_generic_space_avail()
3990 static int dasd_generic_requeue_all_requests(struct dasd_device *device) in dasd_generic_requeue_all_requests() argument
3992 struct dasd_block *block = device->block; in dasd_generic_requeue_all_requests()
4022 dasd_schedule_device_bh(device); in dasd_generic_requeue_all_requests()
4028 struct dasd_device *device = container_of(work, struct dasd_device, in do_requeue_requests() local
4030 dasd_generic_requeue_all_requests(device); in do_requeue_requests()
4031 dasd_device_remove_stop_bits(device, DASD_STOPPED_NOT_ACC); in do_requeue_requests()
4032 if (device->block) in do_requeue_requests()
4033 dasd_schedule_block_bh(device->block); in do_requeue_requests()
4034 dasd_put_device(device); in do_requeue_requests()
4037 void dasd_schedule_requeue(struct dasd_device *device) in dasd_schedule_requeue() argument
4039 dasd_get_device(device); in dasd_schedule_requeue()
4041 if (!schedule_work(&device->requeue_requests)) in dasd_schedule_requeue()
4042 dasd_put_device(device); in dasd_schedule_requeue()
4048 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_pm_freeze() local
4050 if (IS_ERR(device)) in dasd_generic_pm_freeze()
4051 return PTR_ERR(device); in dasd_generic_pm_freeze()
4054 set_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_pm_freeze()
4056 if (device->discipline->freeze) in dasd_generic_pm_freeze()
4057 device->discipline->freeze(device); in dasd_generic_pm_freeze()
4060 dasd_device_set_stop_bits(device, DASD_STOPPED_PM); in dasd_generic_pm_freeze()
4062 return dasd_generic_requeue_all_requests(device); in dasd_generic_pm_freeze()
4068 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_restore_device() local
4071 if (IS_ERR(device)) in dasd_generic_restore_device()
4072 return PTR_ERR(device); in dasd_generic_restore_device()
4075 dasd_device_remove_stop_bits(device, in dasd_generic_restore_device()
4078 dasd_schedule_device_bh(device); in dasd_generic_restore_device()
4084 if (device->discipline->restore && !(device->stopped)) in dasd_generic_restore_device()
4085 rc = device->discipline->restore(device); in dasd_generic_restore_device()
4086 if (rc || device->stopped) in dasd_generic_restore_device()
4091 device->stopped |= DASD_UNRESUMED_PM; in dasd_generic_restore_device()
4093 if (device->block) { in dasd_generic_restore_device()
4094 dasd_schedule_block_bh(device->block); in dasd_generic_restore_device()
4095 if (device->block->request_queue) in dasd_generic_restore_device()
4096 blk_mq_run_hw_queues(device->block->request_queue, in dasd_generic_restore_device()
4100 clear_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_restore_device()
4101 dasd_put_device(device); in dasd_generic_restore_device()
4106 static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, in dasd_generic_build_rdc() argument
4113 cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device, in dasd_generic_build_rdc()
4118 dev_err(&device->cdev->dev, in dasd_generic_build_rdc()
4129 cqr->startdev = device; in dasd_generic_build_rdc()
4130 cqr->memdev = device; in dasd_generic_build_rdc()
4139 int dasd_generic_read_dev_chars(struct dasd_device *device, int magic, in dasd_generic_read_dev_chars() argument
4145 cqr = dasd_generic_build_rdc(device, rdc_buffer_size, magic); in dasd_generic_read_dev_chars()
4193 struct dasd_device *device; in dasd_generic_shutdown() local
4195 device = dasd_device_from_cdev(cdev); in dasd_generic_shutdown()
4196 if (IS_ERR(device)) in dasd_generic_shutdown()
4199 if (device->block) in dasd_generic_shutdown()
4200 dasd_schedule_block_bh(device->block); in dasd_generic_shutdown()
4202 dasd_schedule_device_bh(device); in dasd_generic_shutdown()
4204 wait_event(shutdown_waitq, _wait_for_empty_queues(device)); in dasd_generic_shutdown()