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()
200 static int dasd_state_new_to_known(struct dasd_device *device) in dasd_state_new_to_known() argument
208 dasd_get_device(device); in dasd_state_new_to_known()
210 if (device->block) { in dasd_state_new_to_known()
211 rc = dasd_alloc_queue(device->block); in dasd_state_new_to_known()
213 dasd_put_device(device); in dasd_state_new_to_known()
217 device->state = DASD_STATE_KNOWN; in dasd_state_new_to_known()
224 static int dasd_state_known_to_new(struct dasd_device *device) in dasd_state_known_to_new() argument
227 dasd_eer_disable(device); in dasd_state_known_to_new()
228 device->state = DASD_STATE_NEW; in dasd_state_known_to_new()
230 if (device->block) in dasd_state_known_to_new()
231 dasd_free_queue(device->block); in dasd_state_known_to_new()
234 dasd_put_device(device); in dasd_state_known_to_new()
254 static int dasd_state_known_to_basic(struct dasd_device *device) in dasd_state_known_to_basic() argument
256 struct dasd_block *block = device->block; in dasd_state_known_to_basic()
269 dasd_profile_on(&device->block->profile); in dasd_state_known_to_basic()
271 device->debugfs_dentry = in dasd_state_known_to_basic()
272 dasd_debugfs_setup(dev_name(&device->cdev->dev), in dasd_state_known_to_basic()
274 dasd_profile_init(&device->profile, device->debugfs_dentry); in dasd_state_known_to_basic()
275 dasd_hosts_init(device->debugfs_dentry, device); in dasd_state_known_to_basic()
278 device->debug_area = debug_register(dev_name(&device->cdev->dev), 4, 1, in dasd_state_known_to_basic()
280 debug_register_view(device->debug_area, &debug_sprintf_view); in dasd_state_known_to_basic()
281 debug_set_level(device->debug_area, DBF_WARNING); in dasd_state_known_to_basic()
282 DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created"); in dasd_state_known_to_basic()
284 device->state = DASD_STATE_BASIC; in dasd_state_known_to_basic()
292 static int dasd_state_basic_to_known(struct dasd_device *device) in dasd_state_basic_to_known() argument
296 if (device->discipline->basic_to_known) { in dasd_state_basic_to_known()
297 rc = device->discipline->basic_to_known(device); in dasd_state_basic_to_known()
302 if (device->block) { in dasd_state_basic_to_known()
303 dasd_profile_exit(&device->block->profile); in dasd_state_basic_to_known()
304 debugfs_remove(device->block->debugfs_dentry); in dasd_state_basic_to_known()
305 dasd_gendisk_free(device->block); in dasd_state_basic_to_known()
306 dasd_block_clear_timer(device->block); in dasd_state_basic_to_known()
308 rc = dasd_flush_device_queue(device); in dasd_state_basic_to_known()
311 dasd_device_clear_timer(device); in dasd_state_basic_to_known()
312 dasd_profile_exit(&device->profile); in dasd_state_basic_to_known()
313 dasd_hosts_exit(device); in dasd_state_basic_to_known()
314 debugfs_remove(device->debugfs_dentry); in dasd_state_basic_to_known()
315 DBF_DEV_EVENT(DBF_EMERG, device, "%p debug area deleted", device); in dasd_state_basic_to_known()
316 if (device->debug_area != NULL) { in dasd_state_basic_to_known()
317 debug_unregister(device->debug_area); in dasd_state_basic_to_known()
318 device->debug_area = NULL; in dasd_state_basic_to_known()
320 device->state = DASD_STATE_KNOWN; in dasd_state_basic_to_known()
338 static int dasd_state_basic_to_ready(struct dasd_device *device) in dasd_state_basic_to_ready() argument
345 block = device->block; in dasd_state_basic_to_ready()
352 device->state = DASD_STATE_UNFMT; in dasd_state_basic_to_ready()
353 disk = device->block->gdp; in dasd_state_basic_to_ready()
360 if (device->discipline->setup_blk_queue) in dasd_state_basic_to_ready()
361 device->discipline->setup_blk_queue(block); in dasd_state_basic_to_ready()
364 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
367 device->state = DASD_STATE_BASIC; in dasd_state_basic_to_ready()
371 device->state = DASD_STATE_READY; in dasd_state_basic_to_ready()
374 if (device->discipline->basic_to_ready) in dasd_state_basic_to_ready()
375 rc = device->discipline->basic_to_ready(device); in dasd_state_basic_to_ready()
380 int _wait_for_empty_queues(struct dasd_device *device) in _wait_for_empty_queues() argument
382 if (device->block) in _wait_for_empty_queues()
383 return list_empty(&device->ccw_queue) && in _wait_for_empty_queues()
384 list_empty(&device->block->ccw_queue); in _wait_for_empty_queues()
386 return list_empty(&device->ccw_queue); in _wait_for_empty_queues()
394 static int dasd_state_ready_to_basic(struct dasd_device *device) in dasd_state_ready_to_basic() argument
398 device->state = DASD_STATE_BASIC; in dasd_state_ready_to_basic()
399 if (device->block) { in dasd_state_ready_to_basic()
400 struct dasd_block *block = device->block; in dasd_state_ready_to_basic()
403 device->state = DASD_STATE_READY; in dasd_state_ready_to_basic()
417 static int dasd_state_unfmt_to_basic(struct dasd_device *device) in dasd_state_unfmt_to_basic() argument
419 device->state = DASD_STATE_BASIC; in dasd_state_unfmt_to_basic()
429 dasd_state_ready_to_online(struct dasd_device * device) in dasd_state_ready_to_online() argument
435 device->state = DASD_STATE_ONLINE; in dasd_state_ready_to_online()
436 if (device->block) { in dasd_state_ready_to_online()
437 dasd_schedule_block_bh(device->block); in dasd_state_ready_to_online()
438 if ((device->features & DASD_FEATURE_USERAW)) { in dasd_state_ready_to_online()
439 disk = device->block->gdp; in dasd_state_ready_to_online()
443 disk = device->block->bdev->bd_disk; in dasd_state_ready_to_online()
455 static int dasd_state_online_to_ready(struct dasd_device *device) in dasd_state_online_to_ready() argument
462 if (device->discipline->online_to_ready) { in dasd_state_online_to_ready()
463 rc = device->discipline->online_to_ready(device); in dasd_state_online_to_ready()
468 device->state = DASD_STATE_READY; in dasd_state_online_to_ready()
469 if (device->block && !(device->features & DASD_FEATURE_USERAW)) { in dasd_state_online_to_ready()
470 disk = device->block->bdev->bd_disk; in dasd_state_online_to_ready()
482 static int dasd_increase_state(struct dasd_device *device) in dasd_increase_state() argument
487 if (device->state == DASD_STATE_NEW && in dasd_increase_state()
488 device->target >= DASD_STATE_KNOWN) in dasd_increase_state()
489 rc = dasd_state_new_to_known(device); in dasd_increase_state()
492 device->state == DASD_STATE_KNOWN && in dasd_increase_state()
493 device->target >= DASD_STATE_BASIC) in dasd_increase_state()
494 rc = dasd_state_known_to_basic(device); in dasd_increase_state()
497 device->state == DASD_STATE_BASIC && in dasd_increase_state()
498 device->target >= DASD_STATE_READY) in dasd_increase_state()
499 rc = dasd_state_basic_to_ready(device); in dasd_increase_state()
502 device->state == DASD_STATE_UNFMT && in dasd_increase_state()
503 device->target > DASD_STATE_UNFMT) in dasd_increase_state()
507 device->state == DASD_STATE_READY && in dasd_increase_state()
508 device->target >= DASD_STATE_ONLINE) in dasd_increase_state()
509 rc = dasd_state_ready_to_online(device); in dasd_increase_state()
517 static int dasd_decrease_state(struct dasd_device *device) in dasd_decrease_state() argument
522 if (device->state == DASD_STATE_ONLINE && in dasd_decrease_state()
523 device->target <= DASD_STATE_READY) in dasd_decrease_state()
524 rc = dasd_state_online_to_ready(device); in dasd_decrease_state()
527 device->state == DASD_STATE_READY && in dasd_decrease_state()
528 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
529 rc = dasd_state_ready_to_basic(device); in dasd_decrease_state()
532 device->state == DASD_STATE_UNFMT && in dasd_decrease_state()
533 device->target <= DASD_STATE_BASIC) in dasd_decrease_state()
534 rc = dasd_state_unfmt_to_basic(device); in dasd_decrease_state()
537 device->state == DASD_STATE_BASIC && in dasd_decrease_state()
538 device->target <= DASD_STATE_KNOWN) in dasd_decrease_state()
539 rc = dasd_state_basic_to_known(device); in dasd_decrease_state()
542 device->state == DASD_STATE_KNOWN && in dasd_decrease_state()
543 device->target <= DASD_STATE_NEW) in dasd_decrease_state()
544 rc = dasd_state_known_to_new(device); in dasd_decrease_state()
552 static void dasd_change_state(struct dasd_device *device) in dasd_change_state() argument
556 if (device->state == device->target) in dasd_change_state()
559 if (device->state < device->target) in dasd_change_state()
560 rc = dasd_increase_state(device); in dasd_change_state()
562 rc = dasd_decrease_state(device); in dasd_change_state()
566 device->target = device->state; in dasd_change_state()
569 kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); in dasd_change_state()
571 if (device->state == device->target) in dasd_change_state()
583 struct dasd_device *device = container_of(work, struct dasd_device, kick_work); in do_kick_device() local
584 mutex_lock(&device->state_mutex); in do_kick_device()
585 dasd_change_state(device); in do_kick_device()
586 mutex_unlock(&device->state_mutex); in do_kick_device()
587 dasd_schedule_device_bh(device); in do_kick_device()
588 dasd_put_device(device); in do_kick_device()
591 void dasd_kick_device(struct dasd_device *device) in dasd_kick_device() argument
593 dasd_get_device(device); in dasd_kick_device()
595 if (!schedule_work(&device->kick_work)) in dasd_kick_device()
596 dasd_put_device(device); in dasd_kick_device()
606 struct dasd_device *device = container_of(work, struct dasd_device, in do_reload_device() local
608 device->discipline->reload(device); in do_reload_device()
609 dasd_put_device(device); in do_reload_device()
612 void dasd_reload_device(struct dasd_device *device) in dasd_reload_device() argument
614 dasd_get_device(device); in dasd_reload_device()
616 if (!schedule_work(&device->reload_device)) in dasd_reload_device()
617 dasd_put_device(device); in dasd_reload_device()
627 struct dasd_device *device = container_of(work, struct dasd_device, in do_restore_device() local
629 device->cdev->drv->restore(device->cdev); in do_restore_device()
630 dasd_put_device(device); in do_restore_device()
633 void dasd_restore_device(struct dasd_device *device) in dasd_restore_device() argument
635 dasd_get_device(device); in dasd_restore_device()
637 if (!schedule_work(&device->restore_device)) in dasd_restore_device()
638 dasd_put_device(device); in dasd_restore_device()
644 void dasd_set_target_state(struct dasd_device *device, int target) in dasd_set_target_state() argument
646 dasd_get_device(device); in dasd_set_target_state()
647 mutex_lock(&device->state_mutex); in dasd_set_target_state()
651 if (device->target != target) { in dasd_set_target_state()
652 if (device->state == target) in dasd_set_target_state()
654 device->target = target; in dasd_set_target_state()
656 if (device->state != device->target) in dasd_set_target_state()
657 dasd_change_state(device); in dasd_set_target_state()
658 mutex_unlock(&device->state_mutex); in dasd_set_target_state()
659 dasd_put_device(device); in dasd_set_target_state()
666 static inline int _wait_for_device(struct dasd_device *device) in _wait_for_device() argument
668 return (device->state == device->target); in _wait_for_device()
671 void dasd_enable_device(struct dasd_device *device) in dasd_enable_device() argument
673 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_enable_device()
674 if (device->state <= DASD_STATE_KNOWN) in dasd_enable_device()
676 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_enable_device()
678 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_enable_device()
680 dasd_reload_device(device); in dasd_enable_device()
681 if (device->discipline->kick_validate) in dasd_enable_device()
682 device->discipline->kick_validate(device); in dasd_enable_device()
707 struct dasd_device *device; in dasd_profile_start() local
737 device = cqr->startdev; in dasd_profile_start()
738 if (device->profile.data) { in dasd_profile_start()
740 list_for_each(l, &device->ccw_queue) in dasd_profile_start()
744 spin_lock(&device->profile.lock); in dasd_profile_start()
745 if (device->profile.data) { in dasd_profile_start()
746 device->profile.data->dasd_io_nr_req[counter]++; in dasd_profile_start()
748 device->profile.data->dasd_read_nr_req[counter]++; in dasd_profile_start()
750 spin_unlock(&device->profile.lock); in dasd_profile_start()
817 struct dasd_device *device; in dasd_profile_end() local
822 device = cqr->startdev; in dasd_profile_end()
825 device->profile.data)) in dasd_profile_end()
884 spin_lock(&device->profile.lock); in dasd_profile_end()
885 if (device->profile.data) { in dasd_profile_end()
886 data = device->profile.data; in dasd_profile_end()
891 dasd_profile_end_add_data(device->profile.data, in dasd_profile_end()
900 spin_unlock(&device->profile.lock); in dasd_profile_end()
1192 struct dasd_device *device; in dasd_hosts_show() local
1195 device = m->private; in dasd_hosts_show()
1196 dasd_get_device(device); in dasd_hosts_show()
1198 if (device->discipline->hosts_print) in dasd_hosts_show()
1199 rc = device->discipline->hosts_print(device, m); in dasd_hosts_show()
1201 dasd_put_device(device); in dasd_hosts_show()
1207 static void dasd_hosts_exit(struct dasd_device *device) in dasd_hosts_exit() argument
1209 debugfs_remove(device->hosts_dentry); in dasd_hosts_exit()
1210 device->hosts_dentry = NULL; in dasd_hosts_exit()
1214 struct dasd_device *device) in dasd_hosts_init() argument
1224 device, &dasd_hosts_fops); in dasd_hosts_init()
1226 device->hosts_dentry = pde; in dasd_hosts_init()
1230 struct dasd_device *device, in dasd_smalloc_request() argument
1244 spin_lock_irqsave(&device->mem_lock, flags); in dasd_smalloc_request()
1245 data = chunk = dasd_alloc_chunk(&device->ccw_chunks, size); in dasd_smalloc_request()
1246 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_smalloc_request()
1266 dasd_get_device(device); in dasd_smalloc_request()
1273 struct dasd_device *device) in dasd_fmalloc_request() argument
1287 spin_lock_irqsave(&device->mem_lock, flags); in dasd_fmalloc_request()
1288 cqr = dasd_alloc_chunk(&device->ese_chunks, size); in dasd_fmalloc_request()
1289 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_fmalloc_request()
1308 dasd_get_device(device); in dasd_fmalloc_request()
1314 void dasd_sfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_sfree_request() argument
1318 spin_lock_irqsave(&device->mem_lock, flags); in dasd_sfree_request()
1319 dasd_free_chunk(&device->ccw_chunks, cqr->mem_chunk); in dasd_sfree_request()
1320 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_sfree_request()
1321 dasd_put_device(device); in dasd_sfree_request()
1325 void dasd_ffree_request(struct dasd_ccw_req *cqr, struct dasd_device *device) in dasd_ffree_request() argument
1329 spin_lock_irqsave(&device->mem_lock, flags); in dasd_ffree_request()
1330 dasd_free_chunk(&device->ese_chunks, cqr); in dasd_ffree_request()
1331 spin_unlock_irqrestore(&device->mem_lock, flags); in dasd_ffree_request()
1332 dasd_put_device(device); in dasd_ffree_request()
1341 struct dasd_device *device; in dasd_check_cqr() local
1345 device = cqr->startdev; in dasd_check_cqr()
1346 if (strncmp((char *) &cqr->magic, device->discipline->ebcname, 4)) { in dasd_check_cqr()
1347 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_check_cqr()
1351 *(unsigned int *) device->discipline->name); in dasd_check_cqr()
1365 struct dasd_device *device; in dasd_term_IO() local
1374 device = (struct dasd_device *) cqr->startdev; in dasd_term_IO()
1376 rc = ccw_device_clear(device->cdev, (long) cqr); in dasd_term_IO()
1382 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_term_IO()
1387 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1400 DBF_DEV_EVENT(DBF_ERR, device, "%s", in dasd_term_IO()
1408 dev_err(&device->cdev->dev, "An error occurred in the " in dasd_term_IO()
1415 dasd_schedule_device_bh(device); in dasd_term_IO()
1426 struct dasd_device *device; in dasd_start_IO() local
1436 device = (struct dasd_device *) cqr->startdev; in dasd_start_IO()
1439 test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags)) && in dasd_start_IO()
1441 DBF_DEV_EVENT(DBF_DEBUG, device, "start_IO: return request %p " in dasd_start_IO()
1450 dev_err(&device->cdev->dev, "An error occurred in the DASD " in dasd_start_IO()
1459 cqr->lpm &= dasd_path_get_opm(device); in dasd_start_IO()
1461 cqr->lpm = dasd_path_get_opm(device); in dasd_start_IO()
1464 rc = ccw_device_tm_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1467 rc = ccw_device_start(device->cdev, cqr->cpaddr, in dasd_start_IO()
1475 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1487 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_start_IO()
1490 } else if (cqr->lpm != dasd_path_get_opm(device)) { in dasd_start_IO()
1491 cqr->lpm = dasd_path_get_opm(device); in dasd_start_IO()
1492 DBF_DEV_EVENT(DBF_DEBUG, device, "%s", in dasd_start_IO()
1496 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1499 dasd_generic_last_path_gone(device); in dasd_start_IO()
1500 dasd_path_no_path(device); in dasd_start_IO()
1501 dasd_path_set_tbvpm(device, in dasd_start_IO()
1503 device->cdev)); in dasd_start_IO()
1507 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1511 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1516 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_start_IO()
1523 dev_err(&device->cdev->dev, in dasd_start_IO()
1545 struct dasd_device *device; in dasd_device_timeout() local
1547 device = from_timer(device, t, timer); in dasd_device_timeout()
1548 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1550 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_device_timeout()
1551 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_device_timeout()
1552 dasd_schedule_device_bh(device); in dasd_device_timeout()
1558 void dasd_device_set_timer(struct dasd_device *device, int expires) in dasd_device_set_timer() argument
1561 del_timer(&device->timer); in dasd_device_set_timer()
1563 mod_timer(&device->timer, jiffies + expires); in dasd_device_set_timer()
1570 void dasd_device_clear_timer(struct dasd_device *device) in dasd_device_clear_timer() argument
1572 del_timer(&device->timer); in dasd_device_clear_timer()
1580 struct dasd_device *device; in dasd_handle_killed_request() local
1592 device = dasd_device_from_cdev_locked(cdev); in dasd_handle_killed_request()
1593 if (IS_ERR(device)) { in dasd_handle_killed_request()
1600 device != cqr->startdev || in dasd_handle_killed_request()
1605 dasd_put_device(device); in dasd_handle_killed_request()
1612 dasd_device_clear_timer(device); in dasd_handle_killed_request()
1613 dasd_schedule_device_bh(device); in dasd_handle_killed_request()
1614 dasd_put_device(device); in dasd_handle_killed_request()
1617 void dasd_generic_handle_state_change(struct dasd_device *device) in dasd_generic_handle_state_change() argument
1620 dasd_eer_snss(device); in dasd_generic_handle_state_change()
1622 dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING); in dasd_generic_handle_state_change()
1623 dasd_schedule_device_bh(device); in dasd_generic_handle_state_change()
1624 if (device->block) { in dasd_generic_handle_state_change()
1625 dasd_schedule_block_bh(device->block); in dasd_generic_handle_state_change()
1626 if (device->block->request_queue) in dasd_generic_handle_state_change()
1627 blk_mq_run_hw_queues(device->block->request_queue, in dasd_generic_handle_state_change()
1642 struct dasd_device *device = NULL; in dasd_ese_needs_format() local
1647 device = block->base; in dasd_ese_needs_format()
1648 if (!device || !device->discipline->is_ese) in dasd_ese_needs_format()
1650 if (!device->discipline->is_ese(device)) in dasd_ese_needs_format()
1677 struct dasd_device *device; in dasd_int_handler() local
1689 device = cqr->startdev; in dasd_int_handler()
1691 dasd_device_clear_timer(device); in dasd_int_handler()
1693 dasd_schedule_device_bh(device); in dasd_int_handler()
1717 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1718 if (IS_ERR(device)) in dasd_int_handler()
1721 if (device->discipline == dasd_diag_discipline_pointer) { in dasd_int_handler()
1722 dasd_put_device(device); in dasd_int_handler()
1744 dasd_generic_space_exhaust(device, cqr); in dasd_int_handler()
1745 device->discipline->ext_pool_exhaust(device, cqr); in dasd_int_handler()
1746 dasd_put_device(device); in dasd_int_handler()
1751 device->discipline->dump_sense_dbf(device, irb, "int"); in dasd_int_handler()
1753 if (device->features & DASD_FEATURE_ERPLOG) in dasd_int_handler()
1754 device->discipline->dump_sense(device, cqr, irb); in dasd_int_handler()
1755 device->discipline->check_for_device_change(device, cqr, irb); in dasd_int_handler()
1756 dasd_put_device(device); in dasd_int_handler()
1761 device = dasd_device_from_cdev_locked(cdev); in dasd_int_handler()
1762 if (!IS_ERR(device)) { in dasd_int_handler()
1763 device->discipline->check_attention(device, in dasd_int_handler()
1765 dasd_put_device(device); in dasd_int_handler()
1772 device = (struct dasd_device *) cqr->startdev; in dasd_int_handler()
1773 if (!device || in dasd_int_handler()
1774 strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { in dasd_int_handler()
1782 device->discipline->ese_read(cqr); in dasd_int_handler()
1785 dasd_device_clear_timer(device); in dasd_int_handler()
1786 dasd_schedule_device_bh(device); in dasd_int_handler()
1789 fcqr = device->discipline->ese_format(device, cqr); in dasd_int_handler()
1799 list_add(&fcqr->devlist, &device->ccw_queue); in dasd_int_handler()
1800 dasd_schedule_device_bh(device); in dasd_int_handler()
1809 dasd_device_clear_timer(device); in dasd_int_handler()
1811 dasd_schedule_device_bh(device); in dasd_int_handler()
1817 DBF_DEV_EVENT(DBF_DEBUG, device, "invalid status: bus_id %s, " in dasd_int_handler()
1830 if (cqr->devlist.next != &device->ccw_queue) { in dasd_int_handler()
1840 device->discipline->handle_hpf_error) in dasd_int_handler()
1841 device->discipline->handle_hpf_error(device, irb); in dasd_int_handler()
1848 if (cqr->lpm == dasd_path_get_opm(device)) in dasd_int_handler()
1849 DBF_DEV_EVENT(DBF_DEBUG, device, in dasd_int_handler()
1854 cqr->lpm = dasd_path_get_opm(device); in dasd_int_handler()
1861 (!device->stopped)) { in dasd_int_handler()
1862 if (device->discipline->start_IO(next) == 0) in dasd_int_handler()
1866 dasd_device_set_timer(device, expires); in dasd_int_handler()
1868 dasd_device_clear_timer(device); in dasd_int_handler()
1869 dasd_schedule_device_bh(device); in dasd_int_handler()
1875 struct dasd_device *device; in dasd_generic_uc_handler() local
1877 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_uc_handler()
1879 if (IS_ERR(device)) in dasd_generic_uc_handler()
1881 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) || in dasd_generic_uc_handler()
1882 device->state != device->target || in dasd_generic_uc_handler()
1883 !device->discipline->check_for_device_change){ in dasd_generic_uc_handler()
1884 dasd_put_device(device); in dasd_generic_uc_handler()
1887 if (device->discipline->dump_sense_dbf) in dasd_generic_uc_handler()
1888 device->discipline->dump_sense_dbf(device, irb, "uc"); in dasd_generic_uc_handler()
1889 device->discipline->check_for_device_change(device, NULL, irb); in dasd_generic_uc_handler()
1890 dasd_put_device(device); in dasd_generic_uc_handler()
1900 static void __dasd_device_recovery(struct dasd_device *device, in __dasd_device_recovery() argument
1912 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_recovery()
1925 static void __dasd_device_process_ccw_queue(struct dasd_device *device, in __dasd_device_process_ccw_queue() argument
1932 list_for_each_safe(l, n, &device->ccw_queue) { in __dasd_device_process_ccw_queue()
1941 __dasd_device_recovery(device, cqr); in __dasd_device_process_ccw_queue()
1948 static void __dasd_process_cqr(struct dasd_device *device, in __dasd_process_cqr() argument
1966 dev_err(&device->cdev->dev, in __dasd_process_cqr()
1979 static void __dasd_device_process_final_queue(struct dasd_device *device, in __dasd_device_process_final_queue() argument
1991 __dasd_process_cqr(device, cqr); in __dasd_device_process_final_queue()
1994 __dasd_process_cqr(device, cqr); in __dasd_device_process_final_queue()
2004 static void __dasd_device_check_expire(struct dasd_device *device) in __dasd_device_check_expire() argument
2008 if (list_empty(&device->ccw_queue)) in __dasd_device_check_expire()
2010 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_check_expire()
2013 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_check_expire()
2020 if (device->discipline->term_IO(cqr) != 0) { in __dasd_device_check_expire()
2022 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
2027 dasd_device_set_timer(device, 5*HZ); in __dasd_device_check_expire()
2029 dev_err(&device->cdev->dev, in __dasd_device_check_expire()
2040 static int __dasd_device_is_unusable(struct dasd_device *device, in __dasd_device_is_unusable() argument
2045 if (test_bit(DASD_FLAG_OFFLINE, &device->flags) && in __dasd_device_is_unusable()
2046 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in __dasd_device_is_unusable()
2053 if (device->stopped) { in __dasd_device_is_unusable()
2054 if (device->stopped & mask) { in __dasd_device_is_unusable()
2072 static void __dasd_device_start_head(struct dasd_device *device) in __dasd_device_start_head() argument
2077 if (list_empty(&device->ccw_queue)) in __dasd_device_start_head()
2079 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in __dasd_device_start_head()
2083 if (__dasd_device_is_unusable(device, cqr)) { in __dasd_device_start_head()
2086 dasd_schedule_device_bh(device); in __dasd_device_start_head()
2090 rc = device->discipline->start_IO(cqr); in __dasd_device_start_head()
2092 dasd_device_set_timer(device, cqr->expires); in __dasd_device_start_head()
2094 dasd_schedule_device_bh(device); in __dasd_device_start_head()
2097 dasd_device_set_timer(device, 50); in __dasd_device_start_head()
2100 static void __dasd_device_check_path_events(struct dasd_device *device) in __dasd_device_check_path_events() argument
2104 if (!dasd_path_get_tbvpm(device)) in __dasd_device_check_path_events()
2107 if (device->stopped & in __dasd_device_check_path_events()
2110 rc = device->discipline->verify_path(device, in __dasd_device_check_path_events()
2111 dasd_path_get_tbvpm(device)); in __dasd_device_check_path_events()
2113 dasd_device_set_timer(device, 50); in __dasd_device_check_path_events()
2115 dasd_path_clear_all_verify(device); in __dasd_device_check_path_events()
2128 int dasd_flush_device_queue(struct dasd_device *device) in dasd_flush_device_queue() argument
2135 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
2137 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_flush_device_queue()
2141 rc = device->discipline->term_IO(cqr); in dasd_flush_device_queue()
2144 dev_err(&device->cdev->dev, in dasd_flush_device_queue()
2161 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_flush_device_queue()
2174 __dasd_device_process_final_queue(device, &flush_queue); in dasd_flush_device_queue()
2184 struct dasd_device *device = (struct dasd_device *) data; in dasd_device_tasklet() local
2187 atomic_set (&device->tasklet_scheduled, 0); in dasd_device_tasklet()
2189 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2191 __dasd_device_check_expire(device); in dasd_device_tasklet()
2193 __dasd_device_process_ccw_queue(device, &final_queue); in dasd_device_tasklet()
2194 __dasd_device_check_path_events(device); in dasd_device_tasklet()
2195 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2197 __dasd_device_process_final_queue(device, &final_queue); in dasd_device_tasklet()
2198 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2200 __dasd_device_start_head(device); in dasd_device_tasklet()
2201 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_device_tasklet()
2204 dasd_put_device(device); in dasd_device_tasklet()
2210 void dasd_schedule_device_bh(struct dasd_device *device) in dasd_schedule_device_bh() argument
2213 if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) in dasd_schedule_device_bh()
2215 dasd_get_device(device); in dasd_schedule_device_bh()
2216 tasklet_hi_schedule(&device->tasklet); in dasd_schedule_device_bh()
2220 void dasd_device_set_stop_bits(struct dasd_device *device, int bits) in dasd_device_set_stop_bits() argument
2222 device->stopped |= bits; in dasd_device_set_stop_bits()
2226 void dasd_device_remove_stop_bits(struct dasd_device *device, int bits) in dasd_device_remove_stop_bits() argument
2228 device->stopped &= ~bits; in dasd_device_remove_stop_bits()
2229 if (!device->stopped) in dasd_device_remove_stop_bits()
2240 struct dasd_device *device; in dasd_add_request_head() local
2243 device = cqr->startdev; in dasd_add_request_head()
2244 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2246 list_add(&cqr->devlist, &device->ccw_queue); in dasd_add_request_head()
2248 dasd_schedule_device_bh(device); in dasd_add_request_head()
2249 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_head()
2259 struct dasd_device *device; in dasd_add_request_tail() local
2262 device = cqr->startdev; in dasd_add_request_tail()
2263 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2265 list_add_tail(&cqr->devlist, &device->ccw_queue); in dasd_add_request_tail()
2267 dasd_schedule_device_bh(device); in dasd_add_request_tail()
2268 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_add_request_tail()
2286 struct dasd_device *device; in _wait_for_wakeup() local
2289 device = cqr->startdev; in _wait_for_wakeup()
2290 spin_lock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2292 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in _wait_for_wakeup()
2301 struct dasd_device *device; in __dasd_sleep_on_erp() local
2306 device = cqr->startdev; in __dasd_sleep_on_erp()
2309 device->discipline->handle_terminated_request(cqr); in __dasd_sleep_on_erp()
2313 erp_fn = device->discipline->erp_action(cqr); in __dasd_sleep_on_erp()
2320 __dasd_process_erp(device, cqr); in __dasd_sleep_on_erp()
2340 struct dasd_device *device; in _dasd_sleep_on() local
2347 device = maincqr->startdev; in _dasd_sleep_on()
2357 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on()
2364 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on()
2366 (!dasd_eer_enabled(device))) { in _dasd_sleep_on()
2375 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in _dasd_sleep_on()
2387 generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2394 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on()
2444 struct dasd_device *device; in _dasd_sleep_on_queue() local
2451 device = cqr->startdev; in _dasd_sleep_on_queue()
2455 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in _dasd_sleep_on_queue()
2462 if (device->stopped & ~DASD_STOPPED_PENDING && in _dasd_sleep_on_queue()
2464 !dasd_eer_enabled(device)) { in _dasd_sleep_on_queue()
2473 generic_waitq, !device->stopped); in _dasd_sleep_on_queue()
2480 wait_event(generic_waitq, !(device->stopped)); in _dasd_sleep_on_queue()
2569 static inline int _dasd_term_running_cqr(struct dasd_device *device) in _dasd_term_running_cqr() argument
2574 if (list_empty(&device->ccw_queue)) in _dasd_term_running_cqr()
2576 cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist); in _dasd_term_running_cqr()
2577 rc = device->discipline->term_IO(cqr); in _dasd_term_running_cqr()
2590 struct dasd_device *device; in dasd_sleep_on_immediatly() local
2593 device = cqr->startdev; in dasd_sleep_on_immediatly()
2594 if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags) && in dasd_sleep_on_immediatly()
2600 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2601 rc = _dasd_term_running_cqr(device); in dasd_sleep_on_immediatly()
2603 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2613 list_add(&cqr->devlist, device->ccw_queue.next); in dasd_sleep_on_immediatly()
2616 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2618 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_sleep_on_immediatly()
2630 dasd_schedule_device_bh(device); in dasd_sleep_on_immediatly()
2631 if (device->block) in dasd_sleep_on_immediatly()
2632 dasd_schedule_block_bh(device->block); in dasd_sleep_on_immediatly()
2649 struct dasd_device *device = cqr->startdev; in __dasd_cancel_req() local
2659 rc = device->discipline->term_IO(cqr); in __dasd_cancel_req()
2661 dev_err(&device->cdev->dev, in __dasd_cancel_req()
2671 dasd_schedule_device_bh(device); in __dasd_cancel_req()
2677 struct dasd_device *device = cqr->startdev; in dasd_cancel_req() local
2681 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2683 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_cancel_req()
2734 static void __dasd_process_erp(struct dasd_device *device, in __dasd_process_erp() argument
2740 DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful"); in __dasd_process_erp()
2742 dev_err(&device->cdev->dev, "ERP failed for the DASD\n"); in __dasd_process_erp()
2743 erp_fn = device->discipline->erp_postaction(cqr); in __dasd_process_erp()
3145 struct dasd_device *device; in dasd_times_out() local
3155 device = cqr->startdev ? cqr->startdev : block->base; in dasd_times_out()
3156 if (!device->blk_timeout) { in dasd_times_out()
3160 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_times_out()
3165 spin_lock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3202 spin_unlock(get_ccwdev_lock(device->cdev)); in dasd_times_out()
3409 int dasd_device_is_ro(struct dasd_device *device) in dasd_device_is_ro() argument
3417 ccw_device_get_id(device->cdev, &dev_id); in dasd_device_is_ro()
3473 void dasd_generic_free_discipline(struct dasd_device *device) in dasd_generic_free_discipline() argument
3476 if (device->discipline) { in dasd_generic_free_discipline()
3477 if (device->discipline->uncheck_device) in dasd_generic_free_discipline()
3478 device->discipline->uncheck_device(device); in dasd_generic_free_discipline()
3479 module_put(device->discipline->owner); in dasd_generic_free_discipline()
3480 device->discipline = NULL; in dasd_generic_free_discipline()
3482 if (device->base_discipline) { in dasd_generic_free_discipline()
3483 module_put(device->base_discipline->owner); in dasd_generic_free_discipline()
3484 device->base_discipline = NULL; in dasd_generic_free_discipline()
3495 struct dasd_device *device; in dasd_generic_remove() local
3500 device = dasd_device_from_cdev(cdev); in dasd_generic_remove()
3501 if (IS_ERR(device)) { in dasd_generic_remove()
3505 if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) && in dasd_generic_remove()
3506 !test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_remove()
3508 dasd_put_device(device); in dasd_generic_remove()
3517 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_remove()
3519 block = device->block; in dasd_generic_remove()
3520 dasd_delete_device(device); in dasd_generic_remove()
3541 struct dasd_device *device; in dasd_generic_set_online() local
3546 device = dasd_create_device(cdev); in dasd_generic_set_online()
3547 if (IS_ERR(device)) in dasd_generic_set_online()
3548 return PTR_ERR(device); in dasd_generic_set_online()
3551 if (device->features & DASD_FEATURE_USEDIAG) { in dasd_generic_set_online()
3561 dasd_delete_device(device); in dasd_generic_set_online()
3570 dasd_delete_device(device); in dasd_generic_set_online()
3576 dasd_delete_device(device); in dasd_generic_set_online()
3581 dasd_delete_device(device); in dasd_generic_set_online()
3584 device->base_discipline = base_discipline; in dasd_generic_set_online()
3585 device->discipline = discipline; in dasd_generic_set_online()
3588 rc = discipline->check_device(device); in dasd_generic_set_online()
3594 dasd_delete_device(device); in dasd_generic_set_online()
3598 dasd_set_target_state(device, DASD_STATE_ONLINE); in dasd_generic_set_online()
3599 if (device->state <= DASD_STATE_KNOWN) { in dasd_generic_set_online()
3603 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_online()
3604 if (device->block) in dasd_generic_set_online()
3605 dasd_free_block(device->block); in dasd_generic_set_online()
3606 dasd_delete_device(device); in dasd_generic_set_online()
3611 wait_event(dasd_init_waitq, _wait_for_device(device)); in dasd_generic_set_online()
3613 dasd_put_device(device); in dasd_generic_set_online()
3620 struct dasd_device *device; in dasd_generic_set_offline() local
3627 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_set_offline()
3628 if (IS_ERR(device)) { in dasd_generic_set_offline()
3630 return PTR_ERR(device); in dasd_generic_set_offline()
3639 if (device->block) { in dasd_generic_set_offline()
3640 max_count = device->block->bdev ? 0 : -1; in dasd_generic_set_offline()
3641 open_count = atomic_read(&device->block->open_count); in dasd_generic_set_offline()
3660 if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) { in dasd_generic_set_offline()
3661 if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3663 &device->flags); in dasd_generic_set_offline()
3669 set_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3676 if (test_and_clear_bit(DASD_FLAG_SAFE_OFFLINE, &device->flags) && in dasd_generic_set_offline()
3677 !test_and_set_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3686 if (device->block) { in dasd_generic_set_offline()
3687 rc = fsync_bdev(device->block->bdev); in dasd_generic_set_offline()
3691 dasd_schedule_device_bh(device); in dasd_generic_set_offline()
3693 _wait_for_empty_queues(device)); in dasd_generic_set_offline()
3705 if (!test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) { in dasd_generic_set_offline()
3709 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3713 dasd_set_target_state(device, DASD_STATE_NEW); in dasd_generic_set_offline()
3715 block = device->block; in dasd_generic_set_offline()
3716 dasd_delete_device(device); in dasd_generic_set_offline()
3729 clear_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags); in dasd_generic_set_offline()
3730 clear_bit(DASD_FLAG_OFFLINE, &device->flags); in dasd_generic_set_offline()
3732 dasd_put_device(device); in dasd_generic_set_offline()
3738 int dasd_generic_last_path_gone(struct dasd_device *device) in dasd_generic_last_path_gone() argument
3742 dev_warn(&device->cdev->dev, "No operational channel path is left " in dasd_generic_last_path_gone()
3744 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "last path gone"); in dasd_generic_last_path_gone()
3746 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_last_path_gone()
3748 if (device->state < DASD_STATE_BASIC) in dasd_generic_last_path_gone()
3751 list_for_each_entry(cqr, &device->ccw_queue, devlist) in dasd_generic_last_path_gone()
3757 dasd_device_set_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_last_path_gone()
3758 dasd_device_clear_timer(device); in dasd_generic_last_path_gone()
3759 dasd_schedule_device_bh(device); in dasd_generic_last_path_gone()
3764 int dasd_generic_path_operational(struct dasd_device *device) in dasd_generic_path_operational() argument
3766 dev_info(&device->cdev->dev, "A channel path to the device has become " in dasd_generic_path_operational()
3768 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "path operational"); in dasd_generic_path_operational()
3769 dasd_device_remove_stop_bits(device, DASD_STOPPED_DC_WAIT); in dasd_generic_path_operational()
3770 if (device->stopped & DASD_UNRESUMED_PM) { in dasd_generic_path_operational()
3771 dasd_device_remove_stop_bits(device, DASD_UNRESUMED_PM); in dasd_generic_path_operational()
3772 dasd_restore_device(device); in dasd_generic_path_operational()
3775 dasd_schedule_device_bh(device); in dasd_generic_path_operational()
3776 if (device->block) { in dasd_generic_path_operational()
3777 dasd_schedule_block_bh(device->block); in dasd_generic_path_operational()
3778 if (device->block->request_queue) in dasd_generic_path_operational()
3779 blk_mq_run_hw_queues(device->block->request_queue, in dasd_generic_path_operational()
3783 if (!device->stopped) in dasd_generic_path_operational()
3792 struct dasd_device *device; in dasd_generic_notify() local
3795 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_notify()
3796 if (IS_ERR(device)) in dasd_generic_notify()
3803 dasd_path_no_path(device); in dasd_generic_notify()
3804 ret = dasd_generic_last_path_gone(device); in dasd_generic_notify()
3808 if (dasd_path_get_opm(device)) in dasd_generic_notify()
3809 ret = dasd_generic_path_operational(device); in dasd_generic_notify()
3812 dasd_put_device(device); in dasd_generic_notify()
3819 struct dasd_device *device; in dasd_generic_path_event() local
3822 device = dasd_device_from_cdev_locked(cdev); in dasd_generic_path_event()
3823 if (IS_ERR(device)) in dasd_generic_path_event()
3826 oldopm = dasd_path_get_opm(device); in dasd_generic_path_event()
3829 dasd_path_notoper(device, chp); in dasd_generic_path_event()
3832 dasd_path_available(device, chp); in dasd_generic_path_event()
3833 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3836 if (!dasd_path_is_operational(device, chp) && in dasd_generic_path_event()
3837 !dasd_path_need_verify(device, chp)) { in dasd_generic_path_event()
3843 dasd_path_available(device, chp); in dasd_generic_path_event()
3844 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3846 DBF_DEV_EVENT(DBF_WARNING, device, "%s", in dasd_generic_path_event()
3848 if (device->discipline->kick_validate) in dasd_generic_path_event()
3849 device->discipline->kick_validate(device); in dasd_generic_path_event()
3852 hpfpm = dasd_path_get_hpfpm(device); in dasd_generic_path_event()
3853 ifccpm = dasd_path_get_ifccpm(device); in dasd_generic_path_event()
3854 if (!dasd_path_get_opm(device) && hpfpm) { in dasd_generic_path_event()
3860 if (device->discipline->disable_hpf) in dasd_generic_path_event()
3861 device->discipline->disable_hpf(device); in dasd_generic_path_event()
3862 dasd_device_set_stop_bits(device, DASD_STOPPED_NOT_ACC); in dasd_generic_path_event()
3863 dasd_path_set_tbvpm(device, hpfpm); in dasd_generic_path_event()
3864 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3865 dasd_schedule_requeue(device); in dasd_generic_path_event()
3866 } else if (!dasd_path_get_opm(device) && ifccpm) { in dasd_generic_path_event()
3872 dasd_path_set_tbvpm(device, ifccpm); in dasd_generic_path_event()
3873 dasd_schedule_device_bh(device); in dasd_generic_path_event()
3875 if (oldopm && !dasd_path_get_opm(device) && !hpfpm && !ifccpm) { in dasd_generic_path_event()
3876 dev_warn(&device->cdev->dev, in dasd_generic_path_event()
3878 DBF_DEV_EVENT(DBF_WARNING, device, in dasd_generic_path_event()
3880 dasd_eer_write(device, NULL, DASD_EER_NOPATH); in dasd_generic_path_event()
3881 dasd_device_set_stop_bits(device, in dasd_generic_path_event()
3884 dasd_put_device(device); in dasd_generic_path_event()
3888 int dasd_generic_verify_path(struct dasd_device *device, __u8 lpm) in dasd_generic_verify_path() argument
3890 if (!dasd_path_get_opm(device) && lpm) { in dasd_generic_verify_path()
3891 dasd_path_set_opm(device, lpm); in dasd_generic_verify_path()
3892 dasd_generic_path_operational(device); in dasd_generic_verify_path()
3894 dasd_path_add_opm(device, lpm); in dasd_generic_verify_path()
3899 void dasd_generic_space_exhaust(struct dasd_device *device, in dasd_generic_space_exhaust() argument
3902 dasd_eer_write(device, NULL, DASD_EER_NOSPC); in dasd_generic_space_exhaust()
3904 if (device->state < DASD_STATE_BASIC) in dasd_generic_space_exhaust()
3912 dasd_device_set_stop_bits(device, DASD_STOPPED_NOSPC); in dasd_generic_space_exhaust()
3913 dasd_device_clear_timer(device); in dasd_generic_space_exhaust()
3914 dasd_schedule_device_bh(device); in dasd_generic_space_exhaust()
3918 void dasd_generic_space_avail(struct dasd_device *device) in dasd_generic_space_avail() argument
3920 dev_info(&device->cdev->dev, "Extent pool space is available\n"); in dasd_generic_space_avail()
3921 DBF_DEV_EVENT(DBF_WARNING, device, "%s", "space available"); in dasd_generic_space_avail()
3923 dasd_device_remove_stop_bits(device, DASD_STOPPED_NOSPC); in dasd_generic_space_avail()
3924 dasd_schedule_device_bh(device); in dasd_generic_space_avail()
3926 if (device->block) { in dasd_generic_space_avail()
3927 dasd_schedule_block_bh(device->block); in dasd_generic_space_avail()
3928 if (device->block->request_queue) in dasd_generic_space_avail()
3929 blk_mq_run_hw_queues(device->block->request_queue, true); in dasd_generic_space_avail()
3931 if (!device->stopped) in dasd_generic_space_avail()
3939 static int dasd_generic_requeue_all_requests(struct dasd_device *device) in dasd_generic_requeue_all_requests() argument
3947 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_generic_requeue_all_requests()
3949 list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) { in dasd_generic_requeue_all_requests()
3952 rc = device->discipline->term_IO(cqr); in dasd_generic_requeue_all_requests()
3955 dev_err(&device->cdev->dev, in dasd_generic_requeue_all_requests()
3958 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_generic_requeue_all_requests()
3959 dasd_put_device(device); in dasd_generic_requeue_all_requests()
3965 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_generic_requeue_all_requests()
4006 spin_lock_irq(get_ccwdev_lock(device->cdev)); in dasd_generic_requeue_all_requests()
4007 list_splice_tail(&requeue_queue, &device->ccw_queue); in dasd_generic_requeue_all_requests()
4008 spin_unlock_irq(get_ccwdev_lock(device->cdev)); in dasd_generic_requeue_all_requests()
4010 dasd_schedule_device_bh(device); in dasd_generic_requeue_all_requests()
4016 struct dasd_device *device = container_of(work, struct dasd_device, in do_requeue_requests() local
4018 dasd_generic_requeue_all_requests(device); in do_requeue_requests()
4019 dasd_device_remove_stop_bits(device, DASD_STOPPED_NOT_ACC); in do_requeue_requests()
4020 if (device->block) in do_requeue_requests()
4021 dasd_schedule_block_bh(device->block); in do_requeue_requests()
4022 dasd_put_device(device); in do_requeue_requests()
4025 void dasd_schedule_requeue(struct dasd_device *device) in dasd_schedule_requeue() argument
4027 dasd_get_device(device); in dasd_schedule_requeue()
4029 if (!schedule_work(&device->requeue_requests)) in dasd_schedule_requeue()
4030 dasd_put_device(device); in dasd_schedule_requeue()
4036 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_pm_freeze() local
4038 if (IS_ERR(device)) in dasd_generic_pm_freeze()
4039 return PTR_ERR(device); in dasd_generic_pm_freeze()
4042 set_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_pm_freeze()
4044 if (device->discipline->freeze) in dasd_generic_pm_freeze()
4045 device->discipline->freeze(device); in dasd_generic_pm_freeze()
4048 dasd_device_set_stop_bits(device, DASD_STOPPED_PM); in dasd_generic_pm_freeze()
4050 return dasd_generic_requeue_all_requests(device); in dasd_generic_pm_freeze()
4056 struct dasd_device *device = dasd_device_from_cdev(cdev); in dasd_generic_restore_device() local
4059 if (IS_ERR(device)) in dasd_generic_restore_device()
4060 return PTR_ERR(device); in dasd_generic_restore_device()
4063 dasd_device_remove_stop_bits(device, in dasd_generic_restore_device()
4066 dasd_schedule_device_bh(device); in dasd_generic_restore_device()
4072 if (device->discipline->restore && !(device->stopped)) in dasd_generic_restore_device()
4073 rc = device->discipline->restore(device); in dasd_generic_restore_device()
4074 if (rc || device->stopped) in dasd_generic_restore_device()
4079 device->stopped |= DASD_UNRESUMED_PM; in dasd_generic_restore_device()
4081 if (device->block) { in dasd_generic_restore_device()
4082 dasd_schedule_block_bh(device->block); in dasd_generic_restore_device()
4083 if (device->block->request_queue) in dasd_generic_restore_device()
4084 blk_mq_run_hw_queues(device->block->request_queue, in dasd_generic_restore_device()
4088 clear_bit(DASD_FLAG_SUSPENDED, &device->flags); in dasd_generic_restore_device()
4089 dasd_put_device(device); in dasd_generic_restore_device()
4094 static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, in dasd_generic_build_rdc() argument
4101 cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device, in dasd_generic_build_rdc()
4106 dev_err(&device->cdev->dev, in dasd_generic_build_rdc()
4117 cqr->startdev = device; in dasd_generic_build_rdc()
4118 cqr->memdev = device; in dasd_generic_build_rdc()
4127 int dasd_generic_read_dev_chars(struct dasd_device *device, int magic, in dasd_generic_read_dev_chars() argument
4133 cqr = dasd_generic_build_rdc(device, rdc_buffer_size, magic); in dasd_generic_read_dev_chars()
4181 struct dasd_device *device; in dasd_generic_shutdown() local
4183 device = dasd_device_from_cdev(cdev); in dasd_generic_shutdown()
4184 if (IS_ERR(device)) in dasd_generic_shutdown()
4187 if (device->block) in dasd_generic_shutdown()
4188 dasd_schedule_block_bh(device->block); in dasd_generic_shutdown()
4190 dasd_schedule_device_bh(device); in dasd_generic_shutdown()
4192 wait_event(shutdown_waitq, _wait_for_empty_queues(device)); in dasd_generic_shutdown()