134 static void nvmet_async_events_failall(struct nvmet_ctrl *ctrl)  in nvmet_async_events_failall()  argument
138 	mutex_lock(&ctrl->lock);  in nvmet_async_events_failall()
139 	while (ctrl->nr_async_event_cmds) {  in nvmet_async_events_failall()
140 		req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds];  in nvmet_async_events_failall()
141 		mutex_unlock(&ctrl->lock);  in nvmet_async_events_failall()
143 		mutex_lock(&ctrl->lock);  in nvmet_async_events_failall()
145 	mutex_unlock(&ctrl->lock);  in nvmet_async_events_failall()
148 static void nvmet_async_events_process(struct nvmet_ctrl *ctrl)  in nvmet_async_events_process()  argument
153 	mutex_lock(&ctrl->lock);  in nvmet_async_events_process()
154 	while (ctrl->nr_async_event_cmds && !list_empty(&ctrl->async_events)) {  in nvmet_async_events_process()
155 		aen = list_first_entry(&ctrl->async_events,  in nvmet_async_events_process()
157 		req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds];  in nvmet_async_events_process()
163 		mutex_unlock(&ctrl->lock);  in nvmet_async_events_process()
164 		trace_nvmet_async_event(ctrl, req->cqe->result.u32);  in nvmet_async_events_process()
166 		mutex_lock(&ctrl->lock);  in nvmet_async_events_process()
168 	mutex_unlock(&ctrl->lock);  in nvmet_async_events_process()
171 static void nvmet_async_events_free(struct nvmet_ctrl *ctrl)  in nvmet_async_events_free()  argument
175 	mutex_lock(&ctrl->lock);  in nvmet_async_events_free()
176 	list_for_each_entry_safe(aen, tmp, &ctrl->async_events, entry) {  in nvmet_async_events_free()
180 	mutex_unlock(&ctrl->lock);  in nvmet_async_events_free()
185 	struct nvmet_ctrl *ctrl =  in nvmet_async_event_work()  local
188 	nvmet_async_events_process(ctrl);  in nvmet_async_event_work()
191 void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,  in nvmet_add_async_event()  argument
204 	mutex_lock(&ctrl->lock);  in nvmet_add_async_event()
205 	list_add_tail(&aen->entry, &ctrl->async_events);  in nvmet_add_async_event()
206 	mutex_unlock(&ctrl->lock);  in nvmet_add_async_event()
208 	schedule_work(&ctrl->async_event_work);  in nvmet_add_async_event()
211 static void nvmet_add_to_changed_ns_log(struct nvmet_ctrl *ctrl, __le32 nsid)  in nvmet_add_to_changed_ns_log()  argument
215 	mutex_lock(&ctrl->lock);  in nvmet_add_to_changed_ns_log()
216 	if (ctrl->nr_changed_ns > NVME_MAX_CHANGED_NAMESPACES)  in nvmet_add_to_changed_ns_log()
219 	for (i = 0; i < ctrl->nr_changed_ns; i++) {  in nvmet_add_to_changed_ns_log()
220 		if (ctrl->changed_ns_list[i] == nsid)  in nvmet_add_to_changed_ns_log()
224 	if (ctrl->nr_changed_ns == NVME_MAX_CHANGED_NAMESPACES) {  in nvmet_add_to_changed_ns_log()
225 		ctrl->changed_ns_list[0] = cpu_to_le32(0xffffffff);  in nvmet_add_to_changed_ns_log()
226 		ctrl->nr_changed_ns = U32_MAX;  in nvmet_add_to_changed_ns_log()
230 	ctrl->changed_ns_list[ctrl->nr_changed_ns++] = nsid;  in nvmet_add_to_changed_ns_log()
232 	mutex_unlock(&ctrl->lock);  in nvmet_add_to_changed_ns_log()
237 	struct nvmet_ctrl *ctrl;  in nvmet_ns_changed()  local
241 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_ns_changed()
242 		nvmet_add_to_changed_ns_log(ctrl, cpu_to_le32(nsid));  in nvmet_ns_changed()
243 		if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_NS_ATTR))  in nvmet_ns_changed()
245 		nvmet_add_async_event(ctrl, NVME_AER_TYPE_NOTICE,  in nvmet_ns_changed()
254 	struct nvmet_ctrl *ctrl;  in nvmet_send_ana_event()  local
257 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_send_ana_event()
258 		if (port && ctrl->port != port)  in nvmet_send_ana_event()
260 		if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_ANA_CHANGE))  in nvmet_send_ana_event()
262 		nvmet_add_async_event(ctrl, NVME_AER_TYPE_NOTICE,  in nvmet_send_ana_event()
303 	struct nvmet_ctrl *ctrl;  in nvmet_port_del_ctrls()  local
306 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_port_del_ctrls()
307 		if (ctrl->port == port)  in nvmet_port_del_ctrls()
308 			ctrl->ops->delete_ctrl(ctrl);  in nvmet_port_del_ctrls()
380 	struct nvmet_ctrl *ctrl = container_of(to_delayed_work(work),  in nvmet_keep_alive_timer()  local
382 	bool reset_tbkas = ctrl->reset_tbkas;  in nvmet_keep_alive_timer()
384 	ctrl->reset_tbkas = false;  in nvmet_keep_alive_timer()
386 		pr_debug("ctrl %d reschedule traffic based keep-alive timer\n",  in nvmet_keep_alive_timer()
387 			ctrl->cntlid);  in nvmet_keep_alive_timer()
388 		schedule_delayed_work(&ctrl->ka_work, ctrl->kato * HZ);  in nvmet_keep_alive_timer()
392 	pr_err("ctrl %d keep-alive timer (%d seconds) expired!\n",  in nvmet_keep_alive_timer()
393 		ctrl->cntlid, ctrl->kato);  in nvmet_keep_alive_timer()
395 	nvmet_ctrl_fatal_error(ctrl);  in nvmet_keep_alive_timer()
398 void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)  in nvmet_start_keep_alive_timer()  argument
400 	if (unlikely(ctrl->kato == 0))  in nvmet_start_keep_alive_timer()
403 	pr_debug("ctrl %d start keep-alive timer for %d secs\n",  in nvmet_start_keep_alive_timer()
404 		ctrl->cntlid, ctrl->kato);  in nvmet_start_keep_alive_timer()
406 	schedule_delayed_work(&ctrl->ka_work, ctrl->kato * HZ);  in nvmet_start_keep_alive_timer()
409 void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl)  in nvmet_stop_keep_alive_timer()  argument
411 	if (unlikely(ctrl->kato == 0))  in nvmet_stop_keep_alive_timer()
414 	pr_debug("ctrl %d stop keep-alive\n", ctrl->cntlid);  in nvmet_stop_keep_alive_timer()
416 	cancel_delayed_work_sync(&ctrl->ka_work);  in nvmet_stop_keep_alive_timer()
496  * Note: ctrl->subsys->lock should be held when calling this function
498 static void nvmet_p2pmem_ns_add_p2p(struct nvmet_ctrl *ctrl,  in nvmet_p2pmem_ns_add_p2p()  argument
505 	if (!ctrl->p2p_client || !ns->use_p2pmem)  in nvmet_p2pmem_ns_add_p2p()
509 		ret = pci_p2pdma_distance(ns->p2p_dev, ctrl->p2p_client, true);  in nvmet_p2pmem_ns_add_p2p()
515 		clients[0] = ctrl->p2p_client;  in nvmet_p2pmem_ns_add_p2p()
521 			       dev_name(ctrl->p2p_client), ns->device_path);  in nvmet_p2pmem_ns_add_p2p()
526 	ret = radix_tree_insert(&ctrl->p2p_ns_map, ns->nsid, p2p_dev);  in nvmet_p2pmem_ns_add_p2p()
550 	struct nvmet_ctrl *ctrl;  in nvmet_ns_enable()  local
578 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_ns_enable()
579 		nvmet_p2pmem_ns_add_p2p(ctrl, ns);  in nvmet_ns_enable()
606 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_ns_enable()
607 		pci_dev_put(radix_tree_delete(&ctrl->p2p_ns_map, ns->nsid));  in nvmet_ns_enable()
616 	struct nvmet_ctrl *ctrl;  in nvmet_ns_disable()  local
627 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_ns_disable()
628 		pci_dev_put(radix_tree_delete(&ctrl->p2p_ns_map, ns->nsid));  in nvmet_ns_disable()
707 	struct nvmet_ctrl *ctrl = req->sq->ctrl;  in nvmet_set_error()  local
713 	if (!ctrl || req->error_loc == NVMET_NO_ERROR_LOC)  in nvmet_set_error()
716 	spin_lock_irqsave(&ctrl->error_lock, flags);  in nvmet_set_error()
717 	ctrl->err_counter++;  in nvmet_set_error()
719 		&ctrl->slots[ctrl->err_counter % NVMET_ERROR_LOG_SLOTS];  in nvmet_set_error()
721 	new_error_slot->error_count = cpu_to_le64(ctrl->err_counter);  in nvmet_set_error()
728 	spin_unlock_irqrestore(&ctrl->error_lock, flags);  in nvmet_set_error()
758 void nvmet_cq_setup(struct nvmet_ctrl *ctrl, struct nvmet_cq *cq,  in nvmet_cq_setup()  argument
765 void nvmet_sq_setup(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq,  in nvmet_sq_setup()  argument
772 	ctrl->sqs[qid] = sq;  in nvmet_sq_setup()
784 	struct nvmet_ctrl *ctrl = sq->ctrl;  in nvmet_sq_destroy()  local
790 	if (ctrl && ctrl->sqs && ctrl->sqs[0] == sq)  in nvmet_sq_destroy()
791 		nvmet_async_events_failall(ctrl);  in nvmet_sq_destroy()
797 	if (ctrl) {  in nvmet_sq_destroy()
804 		ctrl->reset_tbkas = true;  in nvmet_sq_destroy()
805 		sq->ctrl->sqs[sq->qid] = NULL;  in nvmet_sq_destroy()
806 		nvmet_ctrl_put(ctrl);  in nvmet_sq_destroy()
807 		sq->ctrl = NULL; /* allows reusing the queue later */  in nvmet_sq_destroy()
943 	if (unlikely(!req->sq->ctrl))  in nvmet_req_init()
961 	if (sq->ctrl)  in nvmet_req_init()
962 		sq->ctrl->reset_tbkas = true;  in nvmet_req_init()
1035 	    !req->sq->ctrl || !req->sq->qid || !req->ns)  in nvmet_req_find_p2p_dev()
1037 	return radix_tree_lookup(&req->sq->ctrl->p2p_ns_map, req->ns->nsid);  in nvmet_req_find_p2p_dev()
1133 static void nvmet_start_ctrl(struct nvmet_ctrl *ctrl)  in nvmet_start_ctrl()  argument
1135 	lockdep_assert_held(&ctrl->lock);  in nvmet_start_ctrl()
1143 	if (ctrl->subsys->type != NVME_NQN_DISC &&  in nvmet_start_ctrl()
1144 	    (nvmet_cc_iosqes(ctrl->cc) != NVME_NVM_IOSQES ||  in nvmet_start_ctrl()
1145 	     nvmet_cc_iocqes(ctrl->cc) != NVME_NVM_IOCQES)) {  in nvmet_start_ctrl()
1146 		ctrl->csts = NVME_CSTS_CFS;  in nvmet_start_ctrl()
1150 	if (nvmet_cc_mps(ctrl->cc) != 0 ||  in nvmet_start_ctrl()
1151 	    nvmet_cc_ams(ctrl->cc) != 0 ||  in nvmet_start_ctrl()
1152 	    !nvmet_css_supported(nvmet_cc_css(ctrl->cc))) {  in nvmet_start_ctrl()
1153 		ctrl->csts = NVME_CSTS_CFS;  in nvmet_start_ctrl()
1157 	ctrl->csts = NVME_CSTS_RDY;  in nvmet_start_ctrl()
1165 	if (ctrl->kato)  in nvmet_start_ctrl()
1166 		mod_delayed_work(system_wq, &ctrl->ka_work, ctrl->kato * HZ);  in nvmet_start_ctrl()
1169 static void nvmet_clear_ctrl(struct nvmet_ctrl *ctrl)  in nvmet_clear_ctrl()  argument
1171 	lockdep_assert_held(&ctrl->lock);  in nvmet_clear_ctrl()
1174 	ctrl->csts &= ~NVME_CSTS_RDY;  in nvmet_clear_ctrl()
1175 	ctrl->cc = 0;  in nvmet_clear_ctrl()
1178 void nvmet_update_cc(struct nvmet_ctrl *ctrl, u32 new)  in nvmet_update_cc()  argument
1182 	mutex_lock(&ctrl->lock);  in nvmet_update_cc()
1183 	old = ctrl->cc;  in nvmet_update_cc()
1184 	ctrl->cc = new;  in nvmet_update_cc()
1187 		nvmet_start_ctrl(ctrl);  in nvmet_update_cc()
1189 		nvmet_clear_ctrl(ctrl);  in nvmet_update_cc()
1191 		nvmet_clear_ctrl(ctrl);  in nvmet_update_cc()
1192 		ctrl->csts |= NVME_CSTS_SHST_CMPLT;  in nvmet_update_cc()
1195 		ctrl->csts &= ~NVME_CSTS_SHST_CMPLT;  in nvmet_update_cc()
1196 	mutex_unlock(&ctrl->lock);  in nvmet_update_cc()
1199 static void nvmet_init_cap(struct nvmet_ctrl *ctrl)  in nvmet_init_cap()  argument
1202 	ctrl->cap = (1ULL << 37);  in nvmet_init_cap()
1204 	ctrl->cap |= (1ULL << 43);  in nvmet_init_cap()
1206 	ctrl->cap |= (15ULL << 24);  in nvmet_init_cap()
1208 	ctrl->cap |= NVMET_QUEUE_SIZE - 1;  in nvmet_init_cap()
1210 	if (nvmet_is_passthru_subsys(ctrl->subsys))  in nvmet_init_cap()
1211 		nvmet_passthrough_override_cap(ctrl);  in nvmet_init_cap()
1218 	struct nvmet_ctrl *ctrl = NULL;  in nvmet_ctrl_find_get()  local
1230 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_ctrl_find_get()
1231 		if (ctrl->cntlid == cntlid) {  in nvmet_ctrl_find_get()
1232 			if (strncmp(hostnqn, ctrl->hostnqn, NVMF_NQN_SIZE)) {  in nvmet_ctrl_find_get()
1236 			if (!kref_get_unless_zero(&ctrl->ref))  in nvmet_ctrl_find_get()
1239 			/* ctrl found */  in nvmet_ctrl_find_get()
1244 	ctrl = NULL; /* ctrl not found */  in nvmet_ctrl_find_get()
1253 	return ctrl;  in nvmet_ctrl_find_get()
1258 	if (unlikely(!(req->sq->ctrl->cc & NVME_CC_ENABLE))) {  in nvmet_check_ctrl_status()
1264 	if (unlikely(!(req->sq->ctrl->csts & NVME_CSTS_RDY))) {  in nvmet_check_ctrl_status()
1293  * Note: ctrl->subsys->lock should be held when calling this function
1295 static void nvmet_setup_p2p_ns_map(struct nvmet_ctrl *ctrl,  in nvmet_setup_p2p_ns_map()  argument
1304 	ctrl->p2p_client = get_device(req->p2p_client);  in nvmet_setup_p2p_ns_map()
1306 	xa_for_each(&ctrl->subsys->namespaces, idx, ns)  in nvmet_setup_p2p_ns_map()
1307 		nvmet_p2pmem_ns_add_p2p(ctrl, ns);  in nvmet_setup_p2p_ns_map()
1311  * Note: ctrl->subsys->lock should be held when calling this function
1313 static void nvmet_release_p2p_ns_map(struct nvmet_ctrl *ctrl)  in nvmet_release_p2p_ns_map()  argument
1318 	radix_tree_for_each_slot(slot, &ctrl->p2p_ns_map, &iter, 0)  in nvmet_release_p2p_ns_map()
1321 	put_device(ctrl->p2p_client);  in nvmet_release_p2p_ns_map()
1326 	struct nvmet_ctrl *ctrl =  in nvmet_fatal_error_handler()  local
1329 	pr_err("ctrl %d fatal error occurred!\n", ctrl->cntlid);  in nvmet_fatal_error_handler()
1330 	ctrl->ops->delete_ctrl(ctrl);  in nvmet_fatal_error_handler()
1337 	struct nvmet_ctrl *ctrl;  in nvmet_alloc_ctrl()  local
1364 	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);  in nvmet_alloc_ctrl()
1365 	if (!ctrl)  in nvmet_alloc_ctrl()
1367 	mutex_init(&ctrl->lock);  in nvmet_alloc_ctrl()
1369 	ctrl->port = req->port;  in nvmet_alloc_ctrl()
1371 	INIT_WORK(&ctrl->async_event_work, nvmet_async_event_work);  in nvmet_alloc_ctrl()
1372 	INIT_LIST_HEAD(&ctrl->async_events);  in nvmet_alloc_ctrl()
1373 	INIT_RADIX_TREE(&ctrl->p2p_ns_map, GFP_KERNEL);  in nvmet_alloc_ctrl()
1374 	INIT_WORK(&ctrl->fatal_err_work, nvmet_fatal_error_handler);  in nvmet_alloc_ctrl()
1375 	INIT_DELAYED_WORK(&ctrl->ka_work, nvmet_keep_alive_timer);  in nvmet_alloc_ctrl()
1377 	memcpy(ctrl->subsysnqn, subsysnqn, NVMF_NQN_SIZE);  in nvmet_alloc_ctrl()
1378 	memcpy(ctrl->hostnqn, hostnqn, NVMF_NQN_SIZE);  in nvmet_alloc_ctrl()
1380 	kref_init(&ctrl->ref);  in nvmet_alloc_ctrl()
1381 	ctrl->subsys = subsys;  in nvmet_alloc_ctrl()
1382 	nvmet_init_cap(ctrl);  in nvmet_alloc_ctrl()
1383 	WRITE_ONCE(ctrl->aen_enabled, NVMET_AEN_CFG_OPTIONAL);  in nvmet_alloc_ctrl()
1385 	ctrl->changed_ns_list = kmalloc_array(NVME_MAX_CHANGED_NAMESPACES,  in nvmet_alloc_ctrl()
1387 	if (!ctrl->changed_ns_list)  in nvmet_alloc_ctrl()
1390 	ctrl->sqs = kcalloc(subsys->max_qid + 1,  in nvmet_alloc_ctrl()
1393 	if (!ctrl->sqs)  in nvmet_alloc_ctrl()
1406 	ctrl->cntlid = ret;  in nvmet_alloc_ctrl()
1408 	ctrl->ops = req->ops;  in nvmet_alloc_ctrl()
1414 	if ((ctrl->subsys->type == NVME_NQN_DISC) && !kato)  in nvmet_alloc_ctrl()
1418 	ctrl->kato = DIV_ROUND_UP(kato, 1000);  in nvmet_alloc_ctrl()
1420 	ctrl->err_counter = 0;  in nvmet_alloc_ctrl()
1421 	spin_lock_init(&ctrl->error_lock);  in nvmet_alloc_ctrl()
1423 	nvmet_start_keep_alive_timer(ctrl);  in nvmet_alloc_ctrl()
1426 	list_add_tail(&ctrl->subsys_entry, &subsys->ctrls);  in nvmet_alloc_ctrl()
1427 	nvmet_setup_p2p_ns_map(ctrl, req);  in nvmet_alloc_ctrl()
1430 	*ctrlp = ctrl;  in nvmet_alloc_ctrl()
1434 	kfree(ctrl->sqs);  in nvmet_alloc_ctrl()
1436 	kfree(ctrl->changed_ns_list);  in nvmet_alloc_ctrl()
1438 	kfree(ctrl);  in nvmet_alloc_ctrl()
1447 	struct nvmet_ctrl *ctrl = container_of(ref, struct nvmet_ctrl, ref);  in nvmet_ctrl_free()  local
1448 	struct nvmet_subsys *subsys = ctrl->subsys;  in nvmet_ctrl_free()
1451 	nvmet_release_p2p_ns_map(ctrl);  in nvmet_ctrl_free()
1452 	list_del(&ctrl->subsys_entry);  in nvmet_ctrl_free()
1455 	nvmet_stop_keep_alive_timer(ctrl);  in nvmet_ctrl_free()
1457 	flush_work(&ctrl->async_event_work);  in nvmet_ctrl_free()
1458 	cancel_work_sync(&ctrl->fatal_err_work);  in nvmet_ctrl_free()
1460 	ida_simple_remove(&cntlid_ida, ctrl->cntlid);  in nvmet_ctrl_free()
1462 	nvmet_async_events_free(ctrl);  in nvmet_ctrl_free()
1463 	kfree(ctrl->sqs);  in nvmet_ctrl_free()
1464 	kfree(ctrl->changed_ns_list);  in nvmet_ctrl_free()
1465 	kfree(ctrl);  in nvmet_ctrl_free()
1470 void nvmet_ctrl_put(struct nvmet_ctrl *ctrl)  in nvmet_ctrl_put()  argument
1472 	kref_put(&ctrl->ref, nvmet_ctrl_free);  in nvmet_ctrl_put()
1475 void nvmet_ctrl_fatal_error(struct nvmet_ctrl *ctrl)  in nvmet_ctrl_fatal_error()  argument
1477 	mutex_lock(&ctrl->lock);  in nvmet_ctrl_fatal_error()
1478 	if (!(ctrl->csts & NVME_CSTS_CFS)) {  in nvmet_ctrl_fatal_error()
1479 		ctrl->csts |= NVME_CSTS_CFS;  in nvmet_ctrl_fatal_error()
1480 		schedule_work(&ctrl->fatal_err_work);  in nvmet_ctrl_fatal_error()
1482 	mutex_unlock(&ctrl->lock);  in nvmet_ctrl_fatal_error()
1590 	struct nvmet_ctrl *ctrl;  in nvmet_subsys_del_ctrls()  local
1593 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_subsys_del_ctrls()
1594 		ctrl->ops->delete_ctrl(ctrl);  in nvmet_subsys_del_ctrls()