1 // SPDX-License-Identifier: GPL-2.0
4  * Copyright (c) 2011-2014, Intel Corporation.
8 #include <linux/blk-mq.h>
9 #include <linux/blk-integrity.h>
16 #include <linux/backing-dev.h>
28 #include <linux/nvme-auth.h>
93  * nvme_wq - hosts nvme related works that are not reset or delete
94  * nvme_reset_wq - hosts nvme reset works
95  * nvme_delete_wq - hosts nvme delete works
98  * keep-alive, periodic reconnects etc. nvme_reset_wq
135 	if (nvme_ctrl_state(ctrl) == NVME_CTRL_LIVE && ctrl->tagset)  in nvme_queue_scan()
136 		queue_work(nvme_wq, &ctrl->scan_work);  in nvme_queue_scan()
148 		return -EBUSY;  in nvme_try_sched_reset()
149 	if (!queue_work(nvme_reset_wq, &ctrl->reset_work))  in nvme_try_sched_reset()
150 		return -EBUSY;  in nvme_try_sched_reset()
163 	set_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags);  in nvme_failfast_work()
164 	dev_info(ctrl->device, "failfast expired\n");  in nvme_failfast_work()
170 	if (!ctrl->opts || ctrl->opts->fast_io_fail_tmo == -1)  in nvme_start_failfast_work()
173 	schedule_delayed_work(&ctrl->failfast_work,  in nvme_start_failfast_work()
174 			      ctrl->opts->fast_io_fail_tmo * HZ);  in nvme_start_failfast_work()
179 	if (!ctrl->opts)  in nvme_stop_failfast_work()
182 	cancel_delayed_work_sync(&ctrl->failfast_work);  in nvme_stop_failfast_work()
183 	clear_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags);  in nvme_stop_failfast_work()
190 		return -EBUSY;  in nvme_reset_ctrl()
191 	if (!queue_work(nvme_reset_wq, &ctrl->reset_work))  in nvme_reset_ctrl()
192 		return -EBUSY;  in nvme_reset_ctrl()
203 		flush_work(&ctrl->reset_work);  in nvme_reset_ctrl_sync()
205 			ret = -ENETRESET;  in nvme_reset_ctrl_sync()
213 	dev_info(ctrl->device,  in nvme_do_delete_ctrl()
216 	flush_work(&ctrl->reset_work);  in nvme_do_delete_ctrl()
219 	ctrl->ops->delete_ctrl(ctrl);  in nvme_do_delete_ctrl()
234 		return -EBUSY;  in nvme_delete_ctrl()
235 	if (!queue_work(nvme_delete_wq, &ctrl->delete_work))  in nvme_delete_ctrl()
236 		return -EBUSY;  in nvme_delete_ctrl()
245 	 * since ->delete_ctrl can free the controller.  in nvme_delete_ctrl_sync()
301 	crd = (nvme_req(req)->status & NVME_SC_CRD) >> 11;  in nvme_retry_req()
303 		delay = nvme_req(req)->ctrl->crdt[crd - 1] * 100;  in nvme_retry_req()
305 	nvme_req(req)->retries++;  in nvme_retry_req()
307 	blk_mq_delay_kick_requeue_list(req->q, delay);  in nvme_retry_req()
312 	struct nvme_ns *ns = req->q->queuedata;  in nvme_log_error()
317 		       ns->disk ? ns->disk->disk_name : "?",  in nvme_log_error()
318 		       nvme_get_opcode_str(nr->cmd->common.opcode),  in nvme_log_error()
319 		       nr->cmd->common.opcode,  in nvme_log_error()
320 		       nvme_sect_to_lba(ns->head, blk_rq_pos(req)),  in nvme_log_error()
321 		       blk_rq_bytes(req) >> ns->head->lba_shift,  in nvme_log_error()
322 		       nvme_get_error_status_str(nr->status),  in nvme_log_error()
323 		       nr->status >> 8 & 7,	/* Status Code Type */  in nvme_log_error()
324 		       nr->status & 0xff,	/* Status Code */  in nvme_log_error()
325 		       nr->status & NVME_SC_MORE ? "MORE " : "",  in nvme_log_error()
326 		       nr->status & NVME_SC_DNR  ? "DNR "  : "");  in nvme_log_error()
331 			   dev_name(nr->ctrl->device),  in nvme_log_error()
332 			   nvme_get_admin_opcode_str(nr->cmd->common.opcode),  in nvme_log_error()
333 			   nr->cmd->common.opcode,  in nvme_log_error()
334 			   nvme_get_error_status_str(nr->status),  in nvme_log_error()
335 			   nr->status >> 8 & 7,	/* Status Code Type */  in nvme_log_error()
336 			   nr->status & 0xff,	/* Status Code */  in nvme_log_error()
337 			   nr->status & NVME_SC_MORE ? "MORE " : "",  in nvme_log_error()
338 			   nr->status & NVME_SC_DNR  ? "DNR "  : "");  in nvme_log_error()
343 	struct nvme_ns *ns = req->q->queuedata;  in nvme_log_err_passthru()
348 		ns ? ns->disk->disk_name : dev_name(nr->ctrl->device),  in nvme_log_err_passthru()
349 		ns ? nvme_get_opcode_str(nr->cmd->common.opcode) :  in nvme_log_err_passthru()
350 		     nvme_get_admin_opcode_str(nr->cmd->common.opcode),  in nvme_log_err_passthru()
351 		nr->cmd->common.opcode,  in nvme_log_err_passthru()
352 		nvme_get_error_status_str(nr->status),  in nvme_log_err_passthru()
353 		nr->status >> 8 & 7,	/* Status Code Type */  in nvme_log_err_passthru()
354 		nr->status & 0xff,	/* Status Code */  in nvme_log_err_passthru()
355 		nr->status & NVME_SC_MORE ? "MORE " : "",  in nvme_log_err_passthru()
356 		nr->status & NVME_SC_DNR  ? "DNR "  : "",  in nvme_log_err_passthru()
357 		nr->cmd->common.cdw10,  in nvme_log_err_passthru()
358 		nr->cmd->common.cdw11,  in nvme_log_err_passthru()
359 		nr->cmd->common.cdw12,  in nvme_log_err_passthru()
360 		nr->cmd->common.cdw13,  in nvme_log_err_passthru()
361 		nr->cmd->common.cdw14,  in nvme_log_err_passthru()
362 		nr->cmd->common.cdw14);  in nvme_log_err_passthru()
374 	if (likely(nvme_req(req)->status == 0))  in nvme_decide_disposition()
377 	if ((nvme_req(req)->status & 0x7ff) == NVME_SC_AUTH_REQUIRED)  in nvme_decide_disposition()
381 	    (nvme_req(req)->status & NVME_SC_DNR) ||  in nvme_decide_disposition()
382 	    nvme_req(req)->retries >= nvme_max_retries)  in nvme_decide_disposition()
385 	if (req->cmd_flags & REQ_NVME_MPATH) {  in nvme_decide_disposition()
386 		if (nvme_is_path_error(nvme_req(req)->status) ||  in nvme_decide_disposition()
387 		    blk_queue_dying(req->q))  in nvme_decide_disposition()
390 		if (blk_queue_dying(req->q))  in nvme_decide_disposition()
401 		struct nvme_ns *ns = req->q->queuedata;  in nvme_end_req_zoned()
403 		req->__sector = nvme_lba_to_sect(ns->head,  in nvme_end_req_zoned()
404 			le64_to_cpu(nvme_req(req)->result.u64));  in nvme_end_req_zoned()
410 	blk_status_t status = nvme_error_status(nvme_req(req)->status);  in nvme_end_req()
412 	if (unlikely(nvme_req(req)->status && !(req->rq_flags & RQF_QUIET))) {  in nvme_end_req()
420 	if (req->cmd_flags & REQ_NVME_MPATH)  in nvme_end_req()
427 	struct nvme_ctrl *ctrl = nvme_req(req)->ctrl;  in nvme_complete_rq()
433 	 * Completions of long-running commands should not be able to  in nvme_complete_rq()
437 	 * req->deadline - req->timeout is the command submission time  in nvme_complete_rq()
440 	if (ctrl->kas &&  in nvme_complete_rq()
441 	    req->deadline - req->timeout >= ctrl->ka_last_check_time)  in nvme_complete_rq()
442 		ctrl->comp_seen = true;  in nvme_complete_rq()
456 		queue_work(nvme_wq, &ctrl->dhchap_auth_work);  in nvme_complete_rq()
475  * Called to unwind from ->queue_rq on a failed command submission so that the
482 	nvme_req(req)->status = NVME_SC_HOST_PATH_ERROR;  in nvme_host_path_error()
491 	dev_dbg_ratelimited(((struct nvme_ctrl *) data)->device,  in nvme_cancel_request()
492 				"Cancelling I/O %d", req->tag);  in nvme_cancel_request()
498 	nvme_req(req)->status = NVME_SC_HOST_ABORTED_CMD;  in nvme_cancel_request()
499 	nvme_req(req)->flags |= NVME_REQ_CANCELLED;  in nvme_cancel_request()
507 	if (ctrl->tagset) {  in nvme_cancel_tagset()
508 		blk_mq_tagset_busy_iter(ctrl->tagset,  in nvme_cancel_tagset()
510 		blk_mq_tagset_wait_completed_request(ctrl->tagset);  in nvme_cancel_tagset()
517 	if (ctrl->admin_tagset) {  in nvme_cancel_admin_tagset()
518 		blk_mq_tagset_busy_iter(ctrl->admin_tagset,  in nvme_cancel_admin_tagset()
520 		blk_mq_tagset_wait_completed_request(ctrl->admin_tagset);  in nvme_cancel_admin_tagset()
532 	spin_lock_irqsave(&ctrl->lock, flags);  in nvme_change_ctrl_state()
602 		WRITE_ONCE(ctrl->state, new_state);  in nvme_change_ctrl_state()
603 		wake_up_all(&ctrl->state_wq);  in nvme_change_ctrl_state()
606 	spin_unlock_irqrestore(&ctrl->lock, flags);  in nvme_change_ctrl_state()
638 		WARN_ONCE(1, "Unhandled ctrl state:%d", ctrl->state);  in nvme_state_terminal()
649 	wait_event(ctrl->state_wq,  in nvme_wait_reset()
662 	ida_free(&head->subsys->ns_ida, head->instance);  in nvme_free_ns_head()
663 	cleanup_srcu_struct(&head->srcu);  in nvme_free_ns_head()
664 	nvme_put_subsystem(head->subsys);  in nvme_free_ns_head()
670 	return kref_get_unless_zero(&head->ref);  in nvme_tryget_ns_head()
675 	kref_put(&head->ref, nvme_free_ns_head);  in nvme_put_ns_head()
682 	put_disk(ns->disk);  in nvme_free_ns()
683 	nvme_put_ns_head(ns->head);  in nvme_free_ns()
684 	nvme_put_ctrl(ns->ctrl);  in nvme_free_ns()
690 	return kref_get_unless_zero(&ns->kref);  in nvme_get_ns()
695 	kref_put(&ns->kref, nvme_free_ns);  in nvme_put_ns()
701 	nvme_req(req)->status = 0;  in nvme_clear_nvme_request()
702 	nvme_req(req)->retries = 0;  in nvme_clear_nvme_request()
703 	nvme_req(req)->flags = 0;  in nvme_clear_nvme_request()
704 	req->rq_flags |= RQF_DONTPREP;  in nvme_clear_nvme_request()
713 	if (req->q->queuedata) {  in nvme_init_request()
714 		struct nvme_ns *ns = req->q->disk->private_data;  in nvme_init_request()
716 		logging_enabled = ns->head->passthru_err_log_enabled;  in nvme_init_request()
717 		req->timeout = NVME_IO_TIMEOUT;  in nvme_init_request()
719 		logging_enabled = nr->ctrl->passthru_err_log_enabled;  in nvme_init_request()
720 		req->timeout = NVME_ADMIN_TIMEOUT;  in nvme_init_request()
724 		req->rq_flags |= RQF_QUIET;  in nvme_init_request()
727 	cmd->common.flags &= ~NVME_CMD_SGL_ALL;  in nvme_init_request()
729 	req->cmd_flags |= REQ_FAILFAST_DRIVER;  in nvme_init_request()
730 	if (req->mq_hctx->type == HCTX_TYPE_POLL)  in nvme_init_request()
731 		req->cmd_flags |= REQ_POLLED;  in nvme_init_request()
733 	memcpy(nr->cmd, cmd, sizeof(*cmd));  in nvme_init_request()
754 	    !test_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags) &&  in nvme_fail_nonready_command()
755 	    !blk_noretry_request(rq) && !(rq->cmd_flags & REQ_NVME_MPATH))  in nvme_fail_nonready_command()
774 	if (rq->q == ctrl->admin_q && (req->flags & NVME_REQ_USERCMD))  in __nvme_check_ready()
777 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in __nvme_check_ready()
785 			if (blk_rq_is_passthrough(rq) && nvme_is_fabrics(req->cmd) &&  in __nvme_check_ready()
786 			    (req->cmd->fabrics.fctype == nvme_fabrics_type_connect ||  in __nvme_check_ready()
787 			     req->cmd->fabrics.fctype == nvme_fabrics_type_auth_send ||  in __nvme_check_ready()
788 			     req->cmd->fabrics.fctype == nvme_fabrics_type_auth_receive))  in __nvme_check_ready()
806 	cmnd->common.opcode = nvme_cmd_flush;  in nvme_setup_flush()
807 	cmnd->common.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_flush()
831 		if (test_and_set_bit_lock(0, &ns->ctrl->discard_page_busy))  in nvme_setup_discard()
834 		range = page_address(ns->ctrl->discard_page);  in nvme_setup_discard()
837 	if (queue_max_discard_segments(req->q) == 1) {  in nvme_setup_discard()
838 		u64 slba = nvme_sect_to_lba(ns->head, blk_rq_pos(req));  in nvme_setup_discard()
839 		u32 nlb = blk_rq_sectors(req) >> (ns->head->lba_shift - 9);  in nvme_setup_discard()
847 			u64 slba = nvme_sect_to_lba(ns->head,  in nvme_setup_discard()
848 						    bio->bi_iter.bi_sector);  in nvme_setup_discard()
849 			u32 nlb = bio->bi_iter.bi_size >> ns->head->lba_shift;  in nvme_setup_discard()
861 		if (virt_to_page(range) == ns->ctrl->discard_page)  in nvme_setup_discard()
862 			clear_bit_unlock(0, &ns->ctrl->discard_page_busy);  in nvme_setup_discard()
869 	cmnd->dsm.opcode = nvme_cmd_dsm;  in nvme_setup_discard()
870 	cmnd->dsm.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_discard()
871 	cmnd->dsm.nr = cpu_to_le32(segments - 1);  in nvme_setup_discard()
872 	cmnd->dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);  in nvme_setup_discard()
874 	bvec_set_virt(&req->special_vec, range, alloc_size);  in nvme_setup_discard()
875 	req->rq_flags |= RQF_SPECIAL_PAYLOAD;  in nvme_setup_discard()
887 	switch (ns->head->guard_type) {  in nvme_set_ref_tag()
889 		cmnd->rw.reftag = cpu_to_le32(t10_pi_ref_tag(req));  in nvme_set_ref_tag()
896 		cmnd->rw.reftag = cpu_to_le32(lower);  in nvme_set_ref_tag()
897 		cmnd->rw.cdw3 = cpu_to_le32(upper);  in nvme_set_ref_tag()
909 	if (ns->ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES)  in nvme_setup_write_zeroes()
912 	cmnd->write_zeroes.opcode = nvme_cmd_write_zeroes;  in nvme_setup_write_zeroes()
913 	cmnd->write_zeroes.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_write_zeroes()
914 	cmnd->write_zeroes.slba =  in nvme_setup_write_zeroes()
915 		cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));  in nvme_setup_write_zeroes()
916 	cmnd->write_zeroes.length =  in nvme_setup_write_zeroes()
917 		cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);  in nvme_setup_write_zeroes()
919 	if (!(req->cmd_flags & REQ_NOUNMAP) &&  in nvme_setup_write_zeroes()
920 	    (ns->head->features & NVME_NS_DEAC))  in nvme_setup_write_zeroes()
921 		cmnd->write_zeroes.control |= cpu_to_le16(NVME_WZ_DEAC);  in nvme_setup_write_zeroes()
923 	if (nvme_ns_has_pi(ns->head)) {  in nvme_setup_write_zeroes()
924 		cmnd->write_zeroes.control |= cpu_to_le16(NVME_RW_PRINFO_PRACT);  in nvme_setup_write_zeroes()
926 		switch (ns->head->pi_type) {  in nvme_setup_write_zeroes()
944 	if (req->cmd_flags & REQ_FUA)  in nvme_setup_rw()
946 	if (req->cmd_flags & (REQ_FAILFAST_DEV | REQ_RAHEAD))  in nvme_setup_rw()
949 	if (req->cmd_flags & REQ_RAHEAD)  in nvme_setup_rw()
952 	cmnd->rw.opcode = op;  in nvme_setup_rw()
953 	cmnd->rw.flags = 0;  in nvme_setup_rw()
954 	cmnd->rw.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_rw()
955 	cmnd->rw.cdw2 = 0;  in nvme_setup_rw()
956 	cmnd->rw.cdw3 = 0;  in nvme_setup_rw()
957 	cmnd->rw.metadata = 0;  in nvme_setup_rw()
958 	cmnd->rw.slba =  in nvme_setup_rw()
959 		cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));  in nvme_setup_rw()
960 	cmnd->rw.length =  in nvme_setup_rw()
961 		cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);  in nvme_setup_rw()
962 	cmnd->rw.reftag = 0;  in nvme_setup_rw()
963 	cmnd->rw.apptag = 0;  in nvme_setup_rw()
964 	cmnd->rw.appmask = 0;  in nvme_setup_rw()
966 	if (ns->head->ms) {  in nvme_setup_rw()
974 			if (WARN_ON_ONCE(!nvme_ns_has_pi(ns->head)))  in nvme_setup_rw()
979 		switch (ns->head->pi_type) {  in nvme_setup_rw()
994 	cmnd->rw.control = cpu_to_le16(control);  in nvme_setup_rw()
995 	cmnd->rw.dsmgmt = cpu_to_le32(dsmgmt);  in nvme_setup_rw()
1001 	if (req->rq_flags & RQF_SPECIAL_PAYLOAD) {  in nvme_cleanup_cmd()
1002 		struct nvme_ctrl *ctrl = nvme_req(req)->ctrl;  in nvme_cleanup_cmd()
1004 		if (req->special_vec.bv_page == ctrl->discard_page)  in nvme_cleanup_cmd()
1005 			clear_bit_unlock(0, &ctrl->discard_page_busy);  in nvme_cleanup_cmd()
1007 			kfree(bvec_virt(&req->special_vec));  in nvme_cleanup_cmd()
1014 	struct nvme_command *cmd = nvme_req(req)->cmd;  in nvme_setup_cmd()
1017 	if (!(req->rq_flags & RQF_DONTPREP))  in nvme_setup_cmd()
1061 	cmd->common.command_id = nvme_cid(req);  in nvme_setup_cmd()
1078 	if (nvme_req(rq)->flags & NVME_REQ_CANCELLED)  in nvme_execute_rq()
1079 		return -EINTR;  in nvme_execute_rq()
1080 	if (nvme_req(rq)->status)  in nvme_execute_rq()
1081 		return nvme_req(rq)->status;  in nvme_execute_rq()
1106 						qid - 1);  in __nvme_submit_sync_cmd()
1112 		req->cmd_flags &= ~REQ_FAILFAST_DRIVER;  in __nvme_submit_sync_cmd()
1122 		*result = nvme_req(req)->result;  in __nvme_submit_sync_cmd()
1142 		effects = le32_to_cpu(ns->head->effects->iocs[opcode]);  in nvme_command_effects()
1144 			dev_warn_once(ctrl->device,  in nvme_command_effects()
1155 		effects = le32_to_cpu(ctrl->effects->acs[opcode]);  in nvme_command_effects()
1175 		mutex_lock(&ctrl->scan_lock);  in nvme_passthru_start()
1176 		mutex_lock(&ctrl->subsys->lock);  in nvme_passthru_start()
1177 		nvme_mpath_start_freeze(ctrl->subsys);  in nvme_passthru_start()
1178 		nvme_mpath_wait_freeze(ctrl->subsys);  in nvme_passthru_start()
1191 		nvme_mpath_unfreeze(ctrl->subsys);  in nvme_passthru_end()
1192 		mutex_unlock(&ctrl->subsys->lock);  in nvme_passthru_end()
1193 		mutex_unlock(&ctrl->scan_lock);  in nvme_passthru_end()
1197 				      &ctrl->flags)) {  in nvme_passthru_end()
1198 			dev_info(ctrl->device,  in nvme_passthru_end()
1204 		flush_work(&ctrl->scan_work);  in nvme_passthru_end()
1209 	switch (cmd->common.opcode) {  in nvme_passthru_end()
1211 		switch (le32_to_cpu(cmd->common.cdw10) & 0xFF) {  in nvme_passthru_end()
1239 	unsigned long delay = ctrl->kato * HZ / 2;  in nvme_keep_alive_work_period()
1247 	if (ctrl->ctratt & NVME_CTRL_ATTR_TBKAS)  in nvme_keep_alive_work_period()
1256 	unsigned long ka_next_check_tm = ctrl->ka_last_check_time + delay;  in nvme_queue_keep_alive_work()
1261 		delay = ka_next_check_tm - now;  in nvme_queue_keep_alive_work()
1263 	queue_delayed_work(nvme_wq, &ctrl->ka_work, delay);  in nvme_queue_keep_alive_work()
1269 	struct nvme_ctrl *ctrl = rq->end_io_data;  in nvme_keep_alive_end_io()
1272 	unsigned long rtt = jiffies - (rq->deadline - rq->timeout);  in nvme_keep_alive_end_io()
1280 		delay -= rtt;  in nvme_keep_alive_end_io()
1282 		dev_warn(ctrl->device, "long keepalive RTT (%u ms)\n",  in nvme_keep_alive_end_io()
1290 		dev_err(ctrl->device,  in nvme_keep_alive_end_io()
1296 	ctrl->ka_last_check_time = jiffies;  in nvme_keep_alive_end_io()
1297 	ctrl->comp_seen = false;  in nvme_keep_alive_end_io()
1298 	spin_lock_irqsave(&ctrl->lock, flags);  in nvme_keep_alive_end_io()
1299 	if (ctrl->state == NVME_CTRL_LIVE ||  in nvme_keep_alive_end_io()
1300 	    ctrl->state == NVME_CTRL_CONNECTING)  in nvme_keep_alive_end_io()
1302 	spin_unlock_irqrestore(&ctrl->lock, flags);  in nvme_keep_alive_end_io()
1304 		queue_delayed_work(nvme_wq, &ctrl->ka_work, delay);  in nvme_keep_alive_end_io()
1312 	bool comp_seen = ctrl->comp_seen;  in nvme_keep_alive_work()
1315 	ctrl->ka_last_check_time = jiffies;  in nvme_keep_alive_work()
1317 	if ((ctrl->ctratt & NVME_CTRL_ATTR_TBKAS) && comp_seen) {  in nvme_keep_alive_work()
1318 		dev_dbg(ctrl->device,  in nvme_keep_alive_work()
1319 			"reschedule traffic based keep-alive timer\n");  in nvme_keep_alive_work()
1320 		ctrl->comp_seen = false;  in nvme_keep_alive_work()
1325 	rq = blk_mq_alloc_request(ctrl->admin_q, nvme_req_op(&ctrl->ka_cmd),  in nvme_keep_alive_work()
1329 		dev_err(ctrl->device, "keep-alive failed: %ld\n", PTR_ERR(rq));  in nvme_keep_alive_work()
1333 	nvme_init_request(rq, &ctrl->ka_cmd);  in nvme_keep_alive_work()
1335 	rq->timeout = ctrl->kato * HZ;  in nvme_keep_alive_work()
1336 	rq->end_io = nvme_keep_alive_end_io;  in nvme_keep_alive_work()
1337 	rq->end_io_data = ctrl;  in nvme_keep_alive_work()
1343 	if (unlikely(ctrl->kato == 0))  in nvme_start_keep_alive()
1351 	if (unlikely(ctrl->kato == 0))  in nvme_stop_keep_alive()
1354 	cancel_delayed_work_sync(&ctrl->ka_work);  in nvme_stop_keep_alive()
1362 		DIV_ROUND_UP(le32_to_cpu(cmd->common.cdw11), 1000);  in nvme_update_keep_alive()
1364 	dev_info(ctrl->device,  in nvme_update_keep_alive()
1366 		 ctrl->kato * 1000 / 2, new_kato * 1000 / 2);  in nvme_update_keep_alive()
1369 	ctrl->kato = new_kato;  in nvme_update_keep_alive()
1381 	if (ctrl->quirks & NVME_QUIRK_IDENTIFY_CNS)  in nvme_ctrl_limited_cns()
1382 		return ctrl->vs < NVME_VS(1, 2, 0);  in nvme_ctrl_limited_cns()
1383 	return ctrl->vs < NVME_VS(1, 1, 0);  in nvme_ctrl_limited_cns()
1391 	/* gcc-4.4.4 (at least) has issues with initializers and anon unions */  in nvme_identify_ctrl()
1397 		return -ENOMEM;  in nvme_identify_ctrl()
1399 	error = nvme_submit_sync_cmd(dev->admin_q, &c, *id,  in nvme_identify_ctrl()
1412 	switch (cur->nidt) {  in nvme_process_ns_desc()
1414 		if (cur->nidl != NVME_NIDT_EUI64_LEN) {  in nvme_process_ns_desc()
1415 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_EUI64\n",  in nvme_process_ns_desc()
1416 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1417 			return -1;  in nvme_process_ns_desc()
1419 		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)  in nvme_process_ns_desc()
1421 		memcpy(ids->eui64, data + sizeof(*cur), NVME_NIDT_EUI64_LEN);  in nvme_process_ns_desc()
1424 		if (cur->nidl != NVME_NIDT_NGUID_LEN) {  in nvme_process_ns_desc()
1425 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_NGUID\n",  in nvme_process_ns_desc()
1426 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1427 			return -1;  in nvme_process_ns_desc()
1429 		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)  in nvme_process_ns_desc()
1431 		memcpy(ids->nguid, data + sizeof(*cur), NVME_NIDT_NGUID_LEN);  in nvme_process_ns_desc()
1434 		if (cur->nidl != NVME_NIDT_UUID_LEN) {  in nvme_process_ns_desc()
1435 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_UUID\n",  in nvme_process_ns_desc()
1436 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1437 			return -1;  in nvme_process_ns_desc()
1439 		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)  in nvme_process_ns_desc()
1441 		uuid_copy(&ids->uuid, data + sizeof(*cur));  in nvme_process_ns_desc()
1444 		if (cur->nidl != NVME_NIDT_CSI_LEN) {  in nvme_process_ns_desc()
1445 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_CSI\n",  in nvme_process_ns_desc()
1446 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1447 			return -1;  in nvme_process_ns_desc()
1449 		memcpy(&ids->csi, data + sizeof(*cur), NVME_NIDT_CSI_LEN);  in nvme_process_ns_desc()
1454 		return cur->nidl;  in nvme_process_ns_desc()
1466 	if (ctrl->vs < NVME_VS(1, 3, 0) && !nvme_multi_css(ctrl))  in nvme_identify_ns_descs()
1468 	if (ctrl->quirks & NVME_QUIRK_NO_NS_DESC_LIST)  in nvme_identify_ns_descs()
1472 	c.identify.nsid = cpu_to_le32(info->nsid);  in nvme_identify_ns_descs()
1477 		return -ENOMEM;  in nvme_identify_ns_descs()
1479 	status = nvme_submit_sync_cmd(ctrl->admin_q, &c, data,  in nvme_identify_ns_descs()
1482 		dev_warn(ctrl->device,  in nvme_identify_ns_descs()
1484 			info->nsid, status);  in nvme_identify_ns_descs()
1491 		if (cur->nidl == 0)  in nvme_identify_ns_descs()
1494 		len = nvme_process_ns_desc(ctrl, &info->ids, cur, &csi_seen);  in nvme_identify_ns_descs()
1502 		dev_warn(ctrl->device, "Command set not reported for nsid:%d\n",  in nvme_identify_ns_descs()
1503 			 info->nsid);  in nvme_identify_ns_descs()
1504 		status = -EINVAL;  in nvme_identify_ns_descs()
1518 	/* gcc-4.4.4 (at least) has issues with initializers and anon unions */  in nvme_identify_ns()
1525 		return -ENOMEM;  in nvme_identify_ns()
1527 	error = nvme_submit_sync_cmd(ctrl->admin_q, &c, *id, sizeof(**id));  in nvme_identify_ns()
1529 		dev_warn(ctrl->device, "Identify namespace failed (%d)\n", error);  in nvme_identify_ns()
1538 	struct nvme_ns_ids *ids = &info->ids;  in nvme_ns_info_from_identify()
1542 	ret = nvme_identify_ns(ctrl, info->nsid, &id);  in nvme_ns_info_from_identify()
1546 	if (id->ncap == 0) {  in nvme_ns_info_from_identify()
1548 		info->is_removed = true;  in nvme_ns_info_from_identify()
1549 		ret = -ENODEV;  in nvme_ns_info_from_identify()
1553 	info->anagrpid = id->anagrpid;  in nvme_ns_info_from_identify()
1554 	info->is_shared = id->nmic & NVME_NS_NMIC_SHARED;  in nvme_ns_info_from_identify()
1555 	info->is_readonly = id->nsattr & NVME_NS_ATTR_RO;  in nvme_ns_info_from_identify()
1556 	info->is_ready = true;  in nvme_ns_info_from_identify()
1557 	if (ctrl->quirks & NVME_QUIRK_BOGUS_NID) {  in nvme_ns_info_from_identify()
1558 		dev_info(ctrl->device,  in nvme_ns_info_from_identify()
1561 		if (ctrl->vs >= NVME_VS(1, 1, 0) &&  in nvme_ns_info_from_identify()
1562 		    !memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))  in nvme_ns_info_from_identify()
1563 			memcpy(ids->eui64, id->eui64, sizeof(ids->eui64));  in nvme_ns_info_from_identify()
1564 		if (ctrl->vs >= NVME_VS(1, 2, 0) &&  in nvme_ns_info_from_identify()
1565 		    !memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))  in nvme_ns_info_from_identify()
1566 			memcpy(ids->nguid, id->nguid, sizeof(ids->nguid));  in nvme_ns_info_from_identify()
1580 		.identify.nsid		= cpu_to_le32(info->nsid),  in nvme_ns_info_from_id_cs_indep()
1587 		return -ENOMEM;  in nvme_ns_info_from_id_cs_indep()
1589 	ret = nvme_submit_sync_cmd(ctrl->admin_q, &c, id, sizeof(*id));  in nvme_ns_info_from_id_cs_indep()
1591 		info->anagrpid = id->anagrpid;  in nvme_ns_info_from_id_cs_indep()
1592 		info->is_shared = id->nmic & NVME_NS_NMIC_SHARED;  in nvme_ns_info_from_id_cs_indep()
1593 		info->is_readonly = id->nsattr & NVME_NS_ATTR_RO;  in nvme_ns_info_from_id_cs_indep()
1594 		info->is_ready = id->nstat & NVME_NSTAT_NRDY;  in nvme_ns_info_from_id_cs_indep()
1611 	ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &res,  in nvme_features()
1638 	u32 q_count = (*count - 1) | ((*count - 1) << 16);  in nvme_set_queue_count()
1653 		dev_err(ctrl->device, "Could not set queue count (%d)\n", status);  in nvme_set_queue_count()
1670 	u32 result, supported_aens = ctrl->oaes & NVME_AEN_SUPPORTED;  in nvme_enable_aen()
1679 		dev_warn(ctrl->device, "Failed to configure AEN (cfg %x)\n",  in nvme_enable_aen()
1682 	queue_work(nvme_wq, &ctrl->async_event_work);  in nvme_enable_aen()
1689 	if (WARN_ON_ONCE(nvme_ns_head_multipath(ns->head)))  in nvme_ns_open()
1693 	if (!try_module_get(ns->ctrl->ops->module))  in nvme_ns_open()
1701 	return -ENXIO;  in nvme_ns_open()
1707 	module_put(ns->ctrl->ops->module);  in nvme_ns_release()
1713 	return nvme_ns_open(disk->private_data);  in nvme_open()
1718 	nvme_ns_release(disk->private_data);  in nvme_release()
1724 	geo->heads = 1 << 6;  in nvme_getgeo()
1725 	geo->sectors = 1 << 5;  in nvme_getgeo()
1726 	geo->cylinders = get_capacity(bdev->bd_disk) >> 11;  in nvme_getgeo()
1736 	switch (head->pi_type) {  in nvme_init_integrity()
1738 		switch (head->guard_type) {  in nvme_init_integrity()
1756 		switch (head->guard_type) {  in nvme_init_integrity()
1777 	integrity.tuple_size = head->ms;  in nvme_init_integrity()
1779 	blk_queue_max_integrity_segments(disk->queue, max_integrity_segments);  in nvme_init_integrity()
1791 	struct request_queue *queue = disk->queue;  in nvme_config_discard()
1794 	if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(head, UINT_MAX)) {  in nvme_config_discard()
1795 		max_discard_sectors = nvme_lba_to_sect(head, ctrl->dmrsl);  in nvme_config_discard()
1796 	} else if (ctrl->oncs & NVME_CTRL_ONCS_DSM) {  in nvme_config_discard()
1813 	if (queue->limits.max_discard_sectors)  in nvme_config_discard()
1817 	if (ctrl->dmrl)  in nvme_config_discard()
1818 		blk_queue_max_discard_segments(queue, ctrl->dmrl);  in nvme_config_discard()
1821 	queue->limits.discard_granularity = queue_logical_block_size(queue);  in nvme_config_discard()
1823 	if (ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES)  in nvme_config_discard()
1829 	return uuid_equal(&a->uuid, &b->uuid) &&  in nvme_ns_ids_equal()
1830 		memcmp(&a->nguid, &b->nguid, sizeof(a->nguid)) == 0 &&  in nvme_ns_ids_equal()
1831 		memcmp(&a->eui64, &b->eui64, sizeof(a->eui64)) == 0 &&  in nvme_ns_ids_equal()
1832 		a->csi == b->csi;  in nvme_ns_ids_equal()
1838 	bool first = id->dps & NVME_NS_DPS_PI_FIRST;  in nvme_init_ms()
1839 	unsigned lbaf = nvme_lbaf_index(id->flbas);  in nvme_init_ms()
1845 	head->pi_size = 0;  in nvme_init_ms()
1846 	head->ms = le16_to_cpu(id->lbaf[lbaf].ms);  in nvme_init_ms()
1847 	if (!(ctrl->ctratt & NVME_CTRL_ATTR_ELBAS)) {  in nvme_init_ms()
1848 		head->pi_size = sizeof(struct t10_pi_tuple);  in nvme_init_ms()
1849 		head->guard_type = NVME_NVM_NS_16B_GUARD;  in nvme_init_ms()
1855 		return -ENOMEM;  in nvme_init_ms()
1858 	c.identify.nsid = cpu_to_le32(head->ns_id);  in nvme_init_ms()
1862 	ret = nvme_submit_sync_cmd(ctrl->admin_q, &c, nvm, sizeof(*nvm));  in nvme_init_ms()
1866 	elbaf = le32_to_cpu(nvm->elbaf[lbaf]);  in nvme_init_ms()
1872 	head->guard_type = nvme_elbaf_guard_type(elbaf);  in nvme_init_ms()
1873 	switch (head->guard_type) {  in nvme_init_ms()
1875 		head->pi_size = sizeof(struct crc64_pi_tuple);  in nvme_init_ms()
1878 		head->pi_size = sizeof(struct t10_pi_tuple);  in nvme_init_ms()
1887 	if (head->pi_size && (first || head->ms == head->pi_size))  in nvme_init_ms()
1888 		head->pi_type = id->dps & NVME_NS_DPS_PI_MASK;  in nvme_init_ms()
1890 		head->pi_type = 0;  in nvme_init_ms()
1904 	head->features &= ~(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);  in nvme_configure_metadata()
1905 	if (!head->ms || !(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))  in nvme_configure_metadata()
1908 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_configure_metadata()
1911 		 * part of the extended data LBA.  We rely on HCA/HBA support to  in nvme_configure_metadata()
1914 		if (WARN_ON_ONCE(!(id->flbas & NVME_NS_FLBAS_META_EXT)))  in nvme_configure_metadata()
1917 		head->features |= NVME_NS_EXT_LBAS;  in nvme_configure_metadata()
1928 		if (ctrl->max_integrity_segments && nvme_ns_has_pi(head))  in nvme_configure_metadata()
1929 			head->features |= NVME_NS_METADATA_SUPPORTED;  in nvme_configure_metadata()
1937 		if (id->flbas & NVME_NS_FLBAS_META_EXT)  in nvme_configure_metadata()
1938 			head->features |= NVME_NS_EXT_LBAS;  in nvme_configure_metadata()
1940 			head->features |= NVME_NS_METADATA_SUPPORTED;  in nvme_configure_metadata()
1948 	bool vwc = ctrl->vwc & NVME_CTRL_VWC_PRESENT;  in nvme_set_queue_limits()
1950 	if (ctrl->max_hw_sectors) {  in nvme_set_queue_limits()
1952 			(ctrl->max_hw_sectors / (NVME_CTRL_PAGE_SIZE >> 9)) + 1;  in nvme_set_queue_limits()
1954 		max_segments = min_not_zero(max_segments, ctrl->max_segments);  in nvme_set_queue_limits()
1955 		blk_queue_max_hw_sectors(q, ctrl->max_hw_sectors);  in nvme_set_queue_limits()
1958 	blk_queue_virt_boundary(q, NVME_CTRL_PAGE_SIZE - 1);  in nvme_set_queue_limits()
1966 	sector_t capacity = nvme_lba_to_sect(head, le64_to_cpu(id->nsze));  in nvme_update_disk_info()
1967 	u32 bs = 1U << head->lba_shift;  in nvme_update_disk_info()
1975 	if (head->lba_shift > PAGE_SHIFT || head->lba_shift < SECTOR_SHIFT) {  in nvme_update_disk_info()
1983 	if (id->nabo == 0) {  in nvme_update_disk_info()
1989 		if (id->nsfeat & NVME_NS_FEAT_ATOMICS && id->nawupf)  in nvme_update_disk_info()
1990 			atomic_bs = (1 + le16_to_cpu(id->nawupf)) * bs;  in nvme_update_disk_info()
1992 			atomic_bs = (1 + ctrl->subsys->awupf) * bs;  in nvme_update_disk_info()
1995 	if (id->nsfeat & NVME_NS_FEAT_IO_OPT) {  in nvme_update_disk_info()
1997 		phys_bs = bs * (1 + le16_to_cpu(id->npwg));  in nvme_update_disk_info()
1999 		io_opt = bs * (1 + le16_to_cpu(id->nows));  in nvme_update_disk_info()
2002 	blk_queue_logical_block_size(disk->queue, bs);  in nvme_update_disk_info()
2008 	blk_queue_physical_block_size(disk->queue, min(phys_bs, atomic_bs));  in nvme_update_disk_info()
2009 	blk_queue_io_min(disk->queue, phys_bs);  in nvme_update_disk_info()
2010 	blk_queue_io_opt(disk->queue, io_opt);  in nvme_update_disk_info()
2013 	 * Register a metadata profile for PI, or the plain non-integrity NVMe  in nvme_update_disk_info()
2018 	if (head->ms) {  in nvme_update_disk_info()
2020 		    (head->features & NVME_NS_METADATA_SUPPORTED))  in nvme_update_disk_info()
2022 					    ctrl->max_integrity_segments);  in nvme_update_disk_info()
2030 	blk_queue_max_write_zeroes_sectors(disk->queue,  in nvme_update_disk_info()
2031 					   ctrl->max_zeroes_sectors);  in nvme_update_disk_info()
2036 	return info->is_readonly || test_bit(NVME_NS_FORCE_RO, &ns->flags);  in nvme_ns_is_readonly()
2047 	struct nvme_ctrl *ctrl = ns->ctrl;  in nvme_set_chunk_sectors()
2050 	if ((ctrl->quirks & NVME_QUIRK_STRIPE_SIZE) &&  in nvme_set_chunk_sectors()
2051 	    is_power_of_2(ctrl->max_hw_sectors))  in nvme_set_chunk_sectors()
2052 		iob = ctrl->max_hw_sectors;  in nvme_set_chunk_sectors()
2054 		iob = nvme_lba_to_sect(ns->head, le16_to_cpu(id->noiob));  in nvme_set_chunk_sectors()
2060 		if (nvme_first_scan(ns->disk))  in nvme_set_chunk_sectors()
2062 				ns->disk->disk_name, iob);  in nvme_set_chunk_sectors()
2066 	if (blk_queue_is_zoned(ns->disk->queue)) {  in nvme_set_chunk_sectors()
2067 		if (nvme_first_scan(ns->disk))  in nvme_set_chunk_sectors()
2069 				ns->disk->disk_name);  in nvme_set_chunk_sectors()
2073 	blk_queue_chunk_sectors(ns->queue, iob);  in nvme_set_chunk_sectors()
2079 	blk_mq_freeze_queue(ns->disk->queue);  in nvme_update_ns_info_generic()
2080 	nvme_set_queue_limits(ns->ctrl, ns->queue);  in nvme_update_ns_info_generic()
2081 	set_disk_ro(ns->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info_generic()
2082 	blk_mq_unfreeze_queue(ns->disk->queue);  in nvme_update_ns_info_generic()
2084 	if (nvme_ns_head_multipath(ns->head)) {  in nvme_update_ns_info_generic()
2085 		blk_mq_freeze_queue(ns->head->disk->queue);  in nvme_update_ns_info_generic()
2086 		set_disk_ro(ns->head->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info_generic()
2088 		blk_stack_limits(&ns->head->disk->queue->limits,  in nvme_update_ns_info_generic()
2089 				 &ns->queue->limits, 0);  in nvme_update_ns_info_generic()
2090 		ns->head->disk->flags |= GENHD_FL_HIDDEN;  in nvme_update_ns_info_generic()
2091 		blk_mq_unfreeze_queue(ns->head->disk->queue);  in nvme_update_ns_info_generic()
2094 	/* Hide the block-interface for these devices */  in nvme_update_ns_info_generic()
2095 	ns->disk->flags |= GENHD_FL_HIDDEN;  in nvme_update_ns_info_generic()
2096 	set_bit(NVME_NS_READY, &ns->flags);  in nvme_update_ns_info_generic()
2108 	ret = nvme_identify_ns(ns->ctrl, info->nsid, &id);  in nvme_update_ns_info_block()
2112 	if (id->ncap == 0) {  in nvme_update_ns_info_block()
2114 		info->is_removed = true;  in nvme_update_ns_info_block()
2115 		ret = -ENODEV;  in nvme_update_ns_info_block()
2119 	blk_mq_freeze_queue(ns->disk->queue);  in nvme_update_ns_info_block()
2120 	lbaf = nvme_lbaf_index(id->flbas);  in nvme_update_ns_info_block()
2121 	ns->head->lba_shift = id->lbaf[lbaf].ds;  in nvme_update_ns_info_block()
2122 	ns->head->nuse = le64_to_cpu(id->nuse);  in nvme_update_ns_info_block()
2123 	nvme_set_queue_limits(ns->ctrl, ns->queue);  in nvme_update_ns_info_block()
2125 	ret = nvme_configure_metadata(ns->ctrl, ns->head, id);  in nvme_update_ns_info_block()
2127 		blk_mq_unfreeze_queue(ns->disk->queue);  in nvme_update_ns_info_block()
2131 	nvme_update_disk_info(ns->ctrl, ns->disk, ns->head, id);  in nvme_update_ns_info_block()
2133 	if (ns->head->ids.csi == NVME_CSI_ZNS) {  in nvme_update_ns_info_block()
2136 			blk_mq_unfreeze_queue(ns->disk->queue);  in nvme_update_ns_info_block()
2144 	 * require that, it must be a no-op if reads from deallocated data  in nvme_update_ns_info_block()
2147 	if ((id->dlfeat & 0x7) == 0x1 && (id->dlfeat & (1 << 3)))  in nvme_update_ns_info_block()
2148 		ns->head->features |= NVME_NS_DEAC;  in nvme_update_ns_info_block()
2149 	set_disk_ro(ns->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info_block()
2150 	set_bit(NVME_NS_READY, &ns->flags);  in nvme_update_ns_info_block()
2151 	blk_mq_unfreeze_queue(ns->disk->queue);  in nvme_update_ns_info_block()
2153 	if (blk_queue_is_zoned(ns->queue)) {  in nvme_update_ns_info_block()
2155 		if (ret && !nvme_first_scan(ns->disk))  in nvme_update_ns_info_block()
2159 	if (nvme_ns_head_multipath(ns->head)) {  in nvme_update_ns_info_block()
2160 		blk_mq_freeze_queue(ns->head->disk->queue);  in nvme_update_ns_info_block()
2161 		nvme_update_disk_info(ns->ctrl, ns->head->disk, ns->head, id);  in nvme_update_ns_info_block()
2162 		set_disk_ro(ns->head->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info_block()
2164 		blk_stack_limits(&ns->head->disk->queue->limits,  in nvme_update_ns_info_block()
2165 				 &ns->queue->limits, 0);  in nvme_update_ns_info_block()
2166 		disk_update_readahead(ns->head->disk);  in nvme_update_ns_info_block()
2167 		blk_mq_unfreeze_queue(ns->head->disk->queue);  in nvme_update_ns_info_block()
2176 	if (ret == -ENODEV) {  in nvme_update_ns_info_block()
2177 		ns->disk->flags |= GENHD_FL_HIDDEN;  in nvme_update_ns_info_block()
2178 		set_bit(NVME_NS_READY, &ns->flags);  in nvme_update_ns_info_block()
2189 	switch (info->ids.csi) {  in nvme_update_ns_info()
2192 			dev_info(ns->ctrl->device,  in nvme_update_ns_info()
2194 				info->nsid);  in nvme_update_ns_info()
2201 		dev_info(ns->ctrl->device,  in nvme_update_ns_info()
2203 			info->nsid, info->ids.csi);  in nvme_update_ns_info()
2223 	return __nvme_submit_sync_cmd(ctrl->admin_q, &cmd, NULL, buffer, len,  in nvme_sec_submit()
2229 	if (ctrl->oacs & NVME_CTRL_OACS_SEC_SUPP) {  in nvme_configure_opal()
2230 		if (!ctrl->opal_dev)  in nvme_configure_opal()
2231 			ctrl->opal_dev = init_opal_dev(ctrl, &nvme_sec_submit);  in nvme_configure_opal()
2233 			opal_unlock_from_suspend(ctrl->opal_dev);  in nvme_configure_opal()
2235 		free_opal_dev(ctrl->opal_dev);  in nvme_configure_opal()
2236 		ctrl->opal_dev = NULL;  in nvme_configure_opal()
2249 	return nvme_ns_report_zones(disk->private_data, sector, nr_zones, cb,  in nvme_report_zones()
2274 	while ((ret = ctrl->ops->reg_read32(ctrl, NVME_REG_CSTS, &csts)) == 0) {  in nvme_wait_ready()
2276 			return -ENODEV;  in nvme_wait_ready()
2282 			return -EINTR;  in nvme_wait_ready()
2284 			dev_err(ctrl->device,  in nvme_wait_ready()
2287 			return -ENODEV;  in nvme_wait_ready()
2298 	ctrl->ctrl_config &= ~NVME_CC_SHN_MASK;  in nvme_disable_ctrl()
2300 		ctrl->ctrl_config |= NVME_CC_SHN_NORMAL;  in nvme_disable_ctrl()
2302 		ctrl->ctrl_config &= ~NVME_CC_ENABLE;  in nvme_disable_ctrl()
2304 	ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);  in nvme_disable_ctrl()
2311 				       ctrl->shutdown_timeout, "shutdown");  in nvme_disable_ctrl()
2313 	if (ctrl->quirks & NVME_QUIRK_DELAY_BEFORE_CHK_RDY)  in nvme_disable_ctrl()
2316 			       (NVME_CAP_TIMEOUT(ctrl->cap) + 1) / 2, "reset");  in nvme_disable_ctrl()
2326 	ret = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);  in nvme_enable_ctrl()
2328 		dev_err(ctrl->device, "Reading CAP failed (%d)\n", ret);  in nvme_enable_ctrl()
2331 	dev_page_min = NVME_CAP_MPSMIN(ctrl->cap) + 12;  in nvme_enable_ctrl()
2334 		dev_err(ctrl->device,  in nvme_enable_ctrl()
2337 		return -ENODEV;  in nvme_enable_ctrl()
2340 	if (NVME_CAP_CSS(ctrl->cap) & NVME_CAP_CSS_CSI)  in nvme_enable_ctrl()
2341 		ctrl->ctrl_config = NVME_CC_CSS_CSI;  in nvme_enable_ctrl()
2343 		ctrl->ctrl_config = NVME_CC_CSS_NVM;  in nvme_enable_ctrl()
2345 	if (ctrl->cap & NVME_CAP_CRMS_CRWMS && ctrl->cap & NVME_CAP_CRMS_CRIMS)  in nvme_enable_ctrl()
2346 		ctrl->ctrl_config |= NVME_CC_CRIME;  in nvme_enable_ctrl()
2348 	ctrl->ctrl_config |= (NVME_CTRL_PAGE_SHIFT - 12) << NVME_CC_MPS_SHIFT;  in nvme_enable_ctrl()
2349 	ctrl->ctrl_config |= NVME_CC_AMS_RR | NVME_CC_SHN_NONE;  in nvme_enable_ctrl()
2350 	ctrl->ctrl_config |= NVME_CC_IOSQES | NVME_CC_IOCQES;  in nvme_enable_ctrl()
2351 	ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);  in nvme_enable_ctrl()
2356 	ret = ctrl->ops->reg_read32(ctrl, NVME_REG_CC, &ctrl->ctrl_config);  in nvme_enable_ctrl()
2360 	/* CAP value may change after initial CC write */  in nvme_enable_ctrl()
2361 	ret = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);  in nvme_enable_ctrl()
2365 	timeout = NVME_CAP_TIMEOUT(ctrl->cap);  in nvme_enable_ctrl()
2366 	if (ctrl->cap & NVME_CAP_CRMS_CRWMS) {  in nvme_enable_ctrl()
2369 		ret = ctrl->ops->reg_read32(ctrl, NVME_REG_CRTO, &crto);  in nvme_enable_ctrl()
2371 			dev_err(ctrl->device, "Reading CRTO failed (%d)\n",  in nvme_enable_ctrl()
2377 		 * CRTO should always be greater or equal to CAP.TO, but some  in nvme_enable_ctrl()
2381 		if (ctrl->ctrl_config & NVME_CC_CRIME)  in nvme_enable_ctrl()
2387 			dev_warn_once(ctrl->device, "bad crto:%x cap:%llx\n",  in nvme_enable_ctrl()
2388 				      crto, ctrl->cap);  in nvme_enable_ctrl()
2393 	ctrl->ctrl_config |= NVME_CC_ENABLE;  in nvme_enable_ctrl()
2394 	ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);  in nvme_enable_ctrl()
2407 	if (!(ctrl->oncs & NVME_CTRL_ONCS_TIMESTAMP))  in nvme_configure_timestamp()
2414 		dev_warn_once(ctrl->device,  in nvme_configure_timestamp()
2426 	if (ctrl->crdt[0])  in nvme_configure_host_options()
2428 	if (ctrl->ctratt & NVME_CTRL_ATTR_ELBAS)  in nvme_configure_host_options()
2438 	host->acre = acre;  in nvme_configure_host_options()
2439 	host->lbafee = lbafee;  in nvme_configure_host_options()
2481  * - If the parameters provide explicit timeouts and tolerances, they will be
2482  *   used to build a table with up to 2 non-operational states to transition to.
2488  * - If not, we'll configure the table with a simple heuristic: we are willing
2491  *   lower-power non-operational state after waiting 50 * (enlat + exlat)
2495  * We will not autonomously enter any non-operational state for which the total
2506 	int max_ps = -1;  in nvme_configure_apst()
2515 	if (!ctrl->apsta)  in nvme_configure_apst()
2518 	if (ctrl->npss > 31) {  in nvme_configure_apst()
2519 		dev_warn(ctrl->device, "NPSS is invalid; not using APST\n");  in nvme_configure_apst()
2527 	if (!ctrl->apst_enabled || ctrl->ps_max_latency_us == 0) {  in nvme_configure_apst()
2529 		dev_dbg(ctrl->device, "APST disabled\n");  in nvme_configure_apst()
2534 	 * Walk through all states from lowest- to highest-power.  in nvme_configure_apst()
2535 	 * According to the spec, lower-numbered states use more power.  NPSS,  in nvme_configure_apst()
2536 	 * despite the name, is the index of the lowest-power state, not the  in nvme_configure_apst()
2539 	for (state = (int)ctrl->npss; state >= 0; state--) {  in nvme_configure_apst()
2543 			table->entries[state] = target;  in nvme_configure_apst()
2549 		if (state == ctrl->npss &&  in nvme_configure_apst()
2550 		    (ctrl->quirks & NVME_QUIRK_NO_DEEPEST_PS))  in nvme_configure_apst()
2554 		 * Is this state a useful non-operational state for higher-power  in nvme_configure_apst()
2557 		if (!(ctrl->psd[state].flags & NVME_PS_FLAGS_NON_OP_STATE))  in nvme_configure_apst()
2560 		exit_latency_us = (u64)le32_to_cpu(ctrl->psd[state].exit_lat);  in nvme_configure_apst()
2561 		if (exit_latency_us > ctrl->ps_max_latency_us)  in nvme_configure_apst()
2565 			le32_to_cpu(ctrl->psd[state].entry_lat);  in nvme_configure_apst()
2578 			if (transition_ms > (1 << 24) - 1)  in nvme_configure_apst()
2579 				transition_ms = (1 << 24) - 1;  in nvme_configure_apst()
2583 		if (max_ps == -1)  in nvme_configure_apst()
2589 	if (max_ps == -1)  in nvme_configure_apst()
2590 		dev_dbg(ctrl->device, "APST enabled but no non-operational states are available\n");  in nvme_configure_apst()
2592 …dev_dbg(ctrl->device, "APST enabled: max PS = %d, max round-trip latency = %lluus, table = %*phN\n…  in nvme_configure_apst()
2600 		dev_err(ctrl->device, "failed to set APST feature (%d)\n", ret);  in nvme_configure_apst()
2620 	if (ctrl->ps_max_latency_us != latency) {  in nvme_set_latency_tolerance()
2621 		ctrl->ps_max_latency_us = latency;  in nvme_set_latency_tolerance()
2651 		 * This LiteON CL1-3D*-Q11 firmware version has a race
2661 		 * This Kioxia CD6-V Series / HPE PE8030 device times out and
2666 		 * to use "nvme set-feature" to disable APST, but booting with
2689 /* match is null-terminated but idstr is space-padded. */
2713 	return q->vid == le16_to_cpu(id->vid) &&  in quirk_matches()
2714 		string_matches(id->mn, q->mn, sizeof(id->mn)) &&  in quirk_matches()
2715 		string_matches(id->fr, q->fr, sizeof(id->fr));  in quirk_matches()
2724 	if(!(ctrl->quirks & NVME_QUIRK_IGNORE_DEV_SUBNQN)) {  in nvme_init_subnqn()
2725 		nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);  in nvme_init_subnqn()
2727 			strscpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);  in nvme_init_subnqn()
2731 		if (ctrl->vs >= NVME_VS(1, 2, 1))  in nvme_init_subnqn()
2732 			dev_warn(ctrl->device, "missing or invalid SUBNQN field.\n");  in nvme_init_subnqn()
2740 	off = snprintf(subsys->subnqn, NVMF_NQN_SIZE,  in nvme_init_subnqn()
2742 			le16_to_cpu(id->vid), le16_to_cpu(id->ssvid));  in nvme_init_subnqn()
2743 	memcpy(subsys->subnqn + off, id->sn, sizeof(id->sn));  in nvme_init_subnqn()
2744 	off += sizeof(id->sn);  in nvme_init_subnqn()
2745 	memcpy(subsys->subnqn + off, id->mn, sizeof(id->mn));  in nvme_init_subnqn()
2746 	off += sizeof(id->mn);  in nvme_init_subnqn()
2747 	memset(subsys->subnqn + off, 0, sizeof(subsys->subnqn) - off);  in nvme_init_subnqn()
2755 	if (subsys->instance >= 0)  in nvme_release_subsystem()
2756 		ida_free(&nvme_instance_ida, subsys->instance);  in nvme_release_subsystem()
2766 	list_del(&subsys->entry);  in nvme_destroy_subsystem()
2769 	ida_destroy(&subsys->ns_ida);  in nvme_destroy_subsystem()
2770 	device_del(&subsys->dev);  in nvme_destroy_subsystem()
2771 	put_device(&subsys->dev);  in nvme_destroy_subsystem()
2776 	kref_put(&subsys->ref, nvme_destroy_subsystem);  in nvme_put_subsystem()
2797 		if (strcmp(subsys->subnqn, subsysnqn))  in __nvme_find_get_subsystem()
2799 		if (!kref_get_unless_zero(&subsys->ref))  in __nvme_find_get_subsystem()
2809 	return ctrl->opts && ctrl->opts->discovery_nqn;  in nvme_discovery_ctrl()
2819 	list_for_each_entry(tmp, &subsys->ctrls, subsys_entry) {  in nvme_validate_cntlid()
2823 		if (tmp->cntlid == ctrl->cntlid) {  in nvme_validate_cntlid()
2824 			dev_err(ctrl->device,  in nvme_validate_cntlid()
2826 				ctrl->cntlid, dev_name(tmp->device),  in nvme_validate_cntlid()
2827 				subsys->subnqn);  in nvme_validate_cntlid()
2831 		if ((id->cmic & NVME_CTRL_CMIC_MULTI_CTRL) ||  in nvme_validate_cntlid()
2835 		dev_err(ctrl->device,  in nvme_validate_cntlid()
2850 		return -ENOMEM;  in nvme_init_subsystem()
2852 	subsys->instance = -1;  in nvme_init_subsystem()
2853 	mutex_init(&subsys->lock);  in nvme_init_subsystem()
2854 	kref_init(&subsys->ref);  in nvme_init_subsystem()
2855 	INIT_LIST_HEAD(&subsys->ctrls);  in nvme_init_subsystem()
2856 	INIT_LIST_HEAD(&subsys->nsheads);  in nvme_init_subsystem()
2858 	memcpy(subsys->serial, id->sn, sizeof(subsys->serial));  in nvme_init_subsystem()
2859 	memcpy(subsys->model, id->mn, sizeof(subsys->model));  in nvme_init_subsystem()
2860 	subsys->vendor_id = le16_to_cpu(id->vid);  in nvme_init_subsystem()
2861 	subsys->cmic = id->cmic;  in nvme_init_subsystem()
2864 	if (id->cntrltype == NVME_CTRL_DISC ||  in nvme_init_subsystem()
2865 	    !strcmp(subsys->subnqn, NVME_DISC_SUBSYS_NAME))  in nvme_init_subsystem()
2866 		subsys->subtype = NVME_NQN_DISC;  in nvme_init_subsystem()
2868 		subsys->subtype = NVME_NQN_NVME;  in nvme_init_subsystem()
2870 	if (nvme_discovery_ctrl(ctrl) && subsys->subtype != NVME_NQN_DISC) {  in nvme_init_subsystem()
2871 		dev_err(ctrl->device,  in nvme_init_subsystem()
2873 			subsys->subnqn);  in nvme_init_subsystem()
2875 		return -EINVAL;  in nvme_init_subsystem()
2877 	subsys->awupf = le16_to_cpu(id->awupf);  in nvme_init_subsystem()
2880 	subsys->dev.class = nvme_subsys_class;  in nvme_init_subsystem()
2881 	subsys->dev.release = nvme_release_subsystem;  in nvme_init_subsystem()
2882 	subsys->dev.groups = nvme_subsys_attrs_groups;  in nvme_init_subsystem()
2883 	dev_set_name(&subsys->dev, "nvme-subsys%d", ctrl->instance);  in nvme_init_subsystem()
2884 	device_initialize(&subsys->dev);  in nvme_init_subsystem()
2887 	found = __nvme_find_get_subsystem(subsys->subnqn);  in nvme_init_subsystem()
2889 		put_device(&subsys->dev);  in nvme_init_subsystem()
2893 			ret = -EINVAL;  in nvme_init_subsystem()
2897 		ret = device_add(&subsys->dev);  in nvme_init_subsystem()
2899 			dev_err(ctrl->device,  in nvme_init_subsystem()
2901 			put_device(&subsys->dev);  in nvme_init_subsystem()
2904 		ida_init(&subsys->ns_ida);  in nvme_init_subsystem()
2905 		list_add_tail(&subsys->entry, &nvme_subsystems);  in nvme_init_subsystem()
2908 	ret = sysfs_create_link(&subsys->dev.kobj, &ctrl->device->kobj,  in nvme_init_subsystem()
2909 				dev_name(ctrl->device));  in nvme_init_subsystem()
2911 		dev_err(ctrl->device,  in nvme_init_subsystem()
2917 		subsys->instance = ctrl->instance;  in nvme_init_subsystem()
2918 	ctrl->subsys = subsys;  in nvme_init_subsystem()
2919 	list_add_tail(&ctrl->subsys_entry, &subsys->ctrls);  in nvme_init_subsystem()
2940 	c.get_log_page.numdl = cpu_to_le16(dwlen & ((1 << 16) - 1));  in nvme_get_log()
2946 	return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);  in nvme_get_log()
2952 	struct nvme_effects_log	*cel = xa_load(&ctrl->cels, csi);  in nvme_get_effects_log()
2960 		return -ENOMEM;  in nvme_get_effects_log()
2969 	xa_store(&ctrl->cels, csi, cel, GFP_KERNEL);  in nvme_get_effects_log()
2977 	u32 page_shift = NVME_CAP_MPSMIN(ctrl->cap) + 12, val;  in nvme_mps_to_sectors()
2979 	if (check_shl_overflow(1U, units + page_shift - 9, &val))  in nvme_mps_to_sectors()
2992 	 * to the write-zeroes, we are cautious and limit the size to the  in nvme_init_non_mdts_limits()
2996 	if ((ctrl->oncs & NVME_CTRL_ONCS_WRITE_ZEROES) &&  in nvme_init_non_mdts_limits()
2997 	    !(ctrl->quirks & NVME_QUIRK_DISABLE_WRITE_ZEROES))  in nvme_init_non_mdts_limits()
2998 		ctrl->max_zeroes_sectors = ctrl->max_hw_sectors;  in nvme_init_non_mdts_limits()
3000 		ctrl->max_zeroes_sectors = 0;  in nvme_init_non_mdts_limits()
3002 	if (ctrl->subsys->subtype != NVME_NQN_NVME ||  in nvme_init_non_mdts_limits()
3004 	    test_bit(NVME_CTRL_SKIP_ID_CNS_CS, &ctrl->flags))  in nvme_init_non_mdts_limits()
3009 		return -ENOMEM;  in nvme_init_non_mdts_limits()
3015 	ret = nvme_submit_sync_cmd(ctrl->admin_q, &c, id, sizeof(*id));  in nvme_init_non_mdts_limits()
3019 	ctrl->dmrl = id->dmrl;  in nvme_init_non_mdts_limits()
3020 	ctrl->dmrsl = le32_to_cpu(id->dmrsl);  in nvme_init_non_mdts_limits()
3021 	if (id->wzsl)  in nvme_init_non_mdts_limits()
3022 		ctrl->max_zeroes_sectors = nvme_mps_to_sectors(ctrl, id->wzsl);  in nvme_init_non_mdts_limits()
3026 		set_bit(NVME_CTRL_SKIP_ID_CNS_CS, &ctrl->flags);  in nvme_init_non_mdts_limits()
3033 	struct nvme_effects_log	*log = ctrl->effects;  in nvme_init_known_nvm_effects()
3035 	log->acs[nvme_admin_format_nvm] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC |  in nvme_init_known_nvm_effects()
3038 	log->acs[nvme_admin_sanitize_nvm] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC |  in nvme_init_known_nvm_effects()
3056 	log->acs[nvme_admin_security_recv] &= cpu_to_le32(~NVME_CMD_EFFECTS_CSE_MASK);  in nvme_init_known_nvm_effects()
3058 	log->iocs[nvme_cmd_write] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC);  in nvme_init_known_nvm_effects()
3059 	log->iocs[nvme_cmd_write_zeroes] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC);  in nvme_init_known_nvm_effects()
3060 	log->iocs[nvme_cmd_write_uncor] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC);  in nvme_init_known_nvm_effects()
3067 	if (ctrl->effects)  in nvme_init_effects()
3070 	if (id->lpa & NVME_CTRL_LPA_CMD_EFFECTS_LOG) {  in nvme_init_effects()
3071 		ret = nvme_get_effects_log(ctrl, NVME_CSI_NVM, &ctrl->effects);  in nvme_init_effects()
3076 	if (!ctrl->effects) {  in nvme_init_effects()
3077 		ctrl->effects = kzalloc(sizeof(*ctrl->effects), GFP_KERNEL);  in nvme_init_effects()
3078 		if (!ctrl->effects)  in nvme_init_effects()
3079 			return -ENOMEM;  in nvme_init_effects()
3080 		xa_store(&ctrl->cels, NVME_CSI_NVM, ctrl->effects, GFP_KERNEL);  in nvme_init_effects()
3093 	if (ctrl->cntlid != le16_to_cpu(id->cntlid)) {  in nvme_check_ctrl_fabric_info()
3094 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3096 			ctrl->cntlid, le16_to_cpu(id->cntlid));  in nvme_check_ctrl_fabric_info()
3097 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3100 	if (!nvme_discovery_ctrl(ctrl) && !ctrl->kas) {  in nvme_check_ctrl_fabric_info()
3101 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3102 			"keep-alive support is mandatory for fabrics\n");  in nvme_check_ctrl_fabric_info()
3103 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3106 	if (!nvme_discovery_ctrl(ctrl) && ctrl->ioccsz < 4) {  in nvme_check_ctrl_fabric_info()
3107 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3109 			ctrl->ioccsz);  in nvme_check_ctrl_fabric_info()
3110 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3113 	if (!nvme_discovery_ctrl(ctrl) && ctrl->iorcsz < 1) {  in nvme_check_ctrl_fabric_info()
3114 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3116 			ctrl->iorcsz);  in nvme_check_ctrl_fabric_info()
3117 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3132 		dev_err(ctrl->device, "Identify Controller failed (%d)\n", ret);  in nvme_init_identify()
3133 		return -EIO;  in nvme_init_identify()
3136 	if (!(ctrl->ops->flags & NVME_F_FABRICS))  in nvme_init_identify()
3137 		ctrl->cntlid = le16_to_cpu(id->cntlid);  in nvme_init_identify()
3139 	if (!ctrl->identified) {  in nvme_init_identify()
3146 		 * could re-scan for quirks every time we reinitialize  in nvme_init_identify()
3152 				ctrl->quirks |= core_quirks[i].quirks;  in nvme_init_identify()
3163 	memcpy(ctrl->subsys->firmware_rev, id->fr,  in nvme_init_identify()
3164 	       sizeof(ctrl->subsys->firmware_rev));  in nvme_init_identify()
3166 	if (force_apst && (ctrl->quirks & NVME_QUIRK_NO_DEEPEST_PS)) {  in nvme_init_identify()
3167 …dev_warn(ctrl->device, "forcibly allowing all power states due to nvme_core.force_apst -- use at y…  in nvme_init_identify()
3168 		ctrl->quirks &= ~NVME_QUIRK_NO_DEEPEST_PS;  in nvme_init_identify()
3171 	ctrl->crdt[0] = le16_to_cpu(id->crdt1);  in nvme_init_identify()
3172 	ctrl->crdt[1] = le16_to_cpu(id->crdt2);  in nvme_init_identify()
3173 	ctrl->crdt[2] = le16_to_cpu(id->crdt3);  in nvme_init_identify()
3175 	ctrl->oacs = le16_to_cpu(id->oacs);  in nvme_init_identify()
3176 	ctrl->oncs = le16_to_cpu(id->oncs);  in nvme_init_identify()
3177 	ctrl->mtfa = le16_to_cpu(id->mtfa);  in nvme_init_identify()
3178 	ctrl->oaes = le32_to_cpu(id->oaes);  in nvme_init_identify()
3179 	ctrl->wctemp = le16_to_cpu(id->wctemp);  in nvme_init_identify()
3180 	ctrl->cctemp = le16_to_cpu(id->cctemp);  in nvme_init_identify()
3182 	atomic_set(&ctrl->abort_limit, id->acl + 1);  in nvme_init_identify()
3183 	ctrl->vwc = id->vwc;  in nvme_init_identify()
3184 	if (id->mdts)  in nvme_init_identify()
3185 		max_hw_sectors = nvme_mps_to_sectors(ctrl, id->mdts);  in nvme_init_identify()
3188 	ctrl->max_hw_sectors =  in nvme_init_identify()
3189 		min_not_zero(ctrl->max_hw_sectors, max_hw_sectors);  in nvme_init_identify()
3191 	nvme_set_queue_limits(ctrl, ctrl->admin_q);  in nvme_init_identify()
3192 	ctrl->sgls = le32_to_cpu(id->sgls);  in nvme_init_identify()
3193 	ctrl->kas = le16_to_cpu(id->kas);  in nvme_init_identify()
3194 	ctrl->max_namespaces = le32_to_cpu(id->mnan);  in nvme_init_identify()
3195 	ctrl->ctratt = le32_to_cpu(id->ctratt);  in nvme_init_identify()
3197 	ctrl->cntrltype = id->cntrltype;  in nvme_init_identify()
3198 	ctrl->dctype = id->dctype;  in nvme_init_identify()
3200 	if (id->rtd3e) {  in nvme_init_identify()
3201 		/* us -> s */  in nvme_init_identify()
3202 		u32 transition_time = le32_to_cpu(id->rtd3e) / USEC_PER_SEC;  in nvme_init_identify()
3204 		ctrl->shutdown_timeout = clamp_t(unsigned int, transition_time,  in nvme_init_identify()
3207 		if (ctrl->shutdown_timeout != shutdown_timeout)  in nvme_init_identify()
3208 			dev_info(ctrl->device,  in nvme_init_identify()
3210 				 ctrl->shutdown_timeout);  in nvme_init_identify()
3212 		ctrl->shutdown_timeout = shutdown_timeout;  in nvme_init_identify()
3214 	ctrl->npss = id->npss;  in nvme_init_identify()
3215 	ctrl->apsta = id->apsta;  in nvme_init_identify()
3216 	prev_apst_enabled = ctrl->apst_enabled;  in nvme_init_identify()
3217 	if (ctrl->quirks & NVME_QUIRK_NO_APST) {  in nvme_init_identify()
3218 		if (force_apst && id->apsta) {  in nvme_init_identify()
3219 …dev_warn(ctrl->device, "forcibly allowing APST due to nvme_core.force_apst -- use at your own risk…  in nvme_init_identify()
3220 			ctrl->apst_enabled = true;  in nvme_init_identify()
3222 			ctrl->apst_enabled = false;  in nvme_init_identify()
3225 		ctrl->apst_enabled = id->apsta;  in nvme_init_identify()
3227 	memcpy(ctrl->psd, id->psd, sizeof(ctrl->psd));  in nvme_init_identify()
3229 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_init_identify()
3230 		ctrl->icdoff = le16_to_cpu(id->icdoff);  in nvme_init_identify()
3231 		ctrl->ioccsz = le32_to_cpu(id->ioccsz);  in nvme_init_identify()
3232 		ctrl->iorcsz = le32_to_cpu(id->iorcsz);  in nvme_init_identify()
3233 		ctrl->maxcmd = le16_to_cpu(id->maxcmd);  in nvme_init_identify()
3239 		ctrl->hmpre = le32_to_cpu(id->hmpre);  in nvme_init_identify()
3240 		ctrl->hmmin = le32_to_cpu(id->hmmin);  in nvme_init_identify()
3241 		ctrl->hmminds = le32_to_cpu(id->hmminds);  in nvme_init_identify()
3242 		ctrl->hmmaxd = le16_to_cpu(id->hmmaxd);  in nvme_init_identify()
3249 	if (ctrl->apst_enabled && !prev_apst_enabled)  in nvme_init_identify()
3250 		dev_pm_qos_expose_latency_tolerance(ctrl->device);  in nvme_init_identify()
3251 	else if (!ctrl->apst_enabled && prev_apst_enabled)  in nvme_init_identify()
3252 		dev_pm_qos_hide_latency_tolerance(ctrl->device);  in nvme_init_identify()
3268 	ret = ctrl->ops->reg_read32(ctrl, NVME_REG_VS, &ctrl->vs);  in nvme_init_ctrl_finish()
3270 		dev_err(ctrl->device, "Reading VS failed (%d)\n", ret);  in nvme_init_ctrl_finish()
3274 	ctrl->sqsize = min_t(u16, NVME_CAP_MQES(ctrl->cap), ctrl->sqsize);  in nvme_init_ctrl_finish()
3276 	if (ctrl->vs >= NVME_VS(1, 1, 0))  in nvme_init_ctrl_finish()
3277 		ctrl->subsystem = NVME_CAP_NSSRC(ctrl->cap);  in nvme_init_ctrl_finish()
3297 	if (!ctrl->identified && !nvme_discovery_ctrl(ctrl)) {  in nvme_init_ctrl_finish()
3303 		if (ret == -EINTR)  in nvme_init_ctrl_finish()
3307 	clear_bit(NVME_CTRL_DIRTY_CAPABILITY, &ctrl->flags);  in nvme_init_ctrl_finish()
3308 	ctrl->identified = true;  in nvme_init_ctrl_finish()
3319 		container_of(inode->i_cdev, struct nvme_ctrl, cdev);  in nvme_dev_open()
3325 		return -EWOULDBLOCK;  in nvme_dev_open()
3329 	if (!try_module_get(ctrl->ops->module)) {  in nvme_dev_open()
3331 		return -EINVAL;  in nvme_dev_open()
3334 	file->private_data = ctrl;  in nvme_dev_open()
3341 		container_of(inode->i_cdev, struct nvme_ctrl, cdev);  in nvme_dev_release()
3343 	module_put(ctrl->ops->module);  in nvme_dev_release()
3362 	lockdep_assert_held(&ctrl->subsys->lock);  in nvme_find_ns_head()
3364 	list_for_each_entry(h, &ctrl->subsys->nsheads, entry) {  in nvme_find_ns_head()
3370 		if (h->ns_id != nsid || !nvme_is_unique_nsid(ctrl, h))  in nvme_find_ns_head()
3372 		if (!list_empty(&h->list) && nvme_tryget_ns_head(h))  in nvme_find_ns_head()
3382 	bool has_uuid = !uuid_is_null(&ids->uuid);  in nvme_subsys_check_duplicate_ids()
3383 	bool has_nguid = memchr_inv(ids->nguid, 0, sizeof(ids->nguid));  in nvme_subsys_check_duplicate_ids()
3384 	bool has_eui64 = memchr_inv(ids->eui64, 0, sizeof(ids->eui64));  in nvme_subsys_check_duplicate_ids()
3387 	lockdep_assert_held(&subsys->lock);  in nvme_subsys_check_duplicate_ids()
3389 	list_for_each_entry(h, &subsys->nsheads, entry) {  in nvme_subsys_check_duplicate_ids()
3390 		if (has_uuid && uuid_equal(&ids->uuid, &h->ids.uuid))  in nvme_subsys_check_duplicate_ids()
3391 			return -EINVAL;  in nvme_subsys_check_duplicate_ids()
3393 		    memcmp(&ids->nguid, &h->ids.nguid, sizeof(ids->nguid)) == 0)  in nvme_subsys_check_duplicate_ids()
3394 			return -EINVAL;  in nvme_subsys_check_duplicate_ids()
3396 		    memcmp(&ids->eui64, &h->ids.eui64, sizeof(ids->eui64)) == 0)  in nvme_subsys_check_duplicate_ids()
3397 			return -EINVAL;  in nvme_subsys_check_duplicate_ids()
3405 	ida_free(&nvme_ns_chr_minor_ida, MINOR(dev->devt));  in nvme_cdev_rel()
3422 	cdev_device->devt = MKDEV(MAJOR(nvme_ns_chr_devt), minor);  in nvme_cdev_add()
3423 	cdev_device->class = nvme_ns_chr_class;  in nvme_cdev_add()
3424 	cdev_device->release = nvme_cdev_rel;  in nvme_cdev_add()
3427 	cdev->owner = owner;  in nvme_cdev_add()
3437 	return nvme_ns_open(container_of(inode->i_cdev, struct nvme_ns, cdev));  in nvme_ns_chr_open()
3442 	nvme_ns_release(container_of(inode->i_cdev, struct nvme_ns, cdev));  in nvme_ns_chr_release()
3460 	ns->cdev_device.parent = ns->ctrl->device;  in nvme_add_ns_cdev()
3461 	ret = dev_set_name(&ns->cdev_device, "ng%dn%d",  in nvme_add_ns_cdev()
3462 			   ns->ctrl->instance, ns->head->instance);  in nvme_add_ns_cdev()
3466 	return nvme_cdev_add(&ns->cdev, &ns->cdev_device, &nvme_ns_chr_fops,  in nvme_add_ns_cdev()
3467 			     ns->ctrl->ops->module);  in nvme_add_ns_cdev()
3475 	int ret = -ENOMEM;  in nvme_alloc_ns_head()
3484 	ret = ida_alloc_min(&ctrl->subsys->ns_ida, 1, GFP_KERNEL);  in nvme_alloc_ns_head()
3487 	head->instance = ret;  in nvme_alloc_ns_head()
3488 	INIT_LIST_HEAD(&head->list);  in nvme_alloc_ns_head()
3489 	ret = init_srcu_struct(&head->srcu);  in nvme_alloc_ns_head()
3492 	head->subsys = ctrl->subsys;  in nvme_alloc_ns_head()
3493 	head->ns_id = info->nsid;  in nvme_alloc_ns_head()
3494 	head->ids = info->ids;  in nvme_alloc_ns_head()
3495 	head->shared = info->is_shared;  in nvme_alloc_ns_head()
3496 	ratelimit_state_init(&head->rs_nuse, 5 * HZ, 1);  in nvme_alloc_ns_head()
3497 	ratelimit_set_flags(&head->rs_nuse, RATELIMIT_MSG_ON_RELEASE);  in nvme_alloc_ns_head()
3498 	kref_init(&head->ref);  in nvme_alloc_ns_head()
3500 	if (head->ids.csi) {  in nvme_alloc_ns_head()
3501 		ret = nvme_get_effects_log(ctrl, head->ids.csi, &head->effects);  in nvme_alloc_ns_head()
3505 		head->effects = ctrl->effects;  in nvme_alloc_ns_head()
3511 	list_add_tail(&head->entry, &ctrl->subsys->nsheads);  in nvme_alloc_ns_head()
3513 	kref_get(&ctrl->subsys->ref);  in nvme_alloc_ns_head()
3517 	cleanup_srcu_struct(&head->srcu);  in nvme_alloc_ns_head()
3519 	ida_free(&ctrl->subsys->ns_ida, head->instance);  in nvme_alloc_ns_head()
3543 		mutex_lock(&s->lock);  in nvme_global_check_duplicate_ids()
3545 		mutex_unlock(&s->lock);  in nvme_global_check_duplicate_ids()
3556 	struct nvme_ctrl *ctrl = ns->ctrl;  in nvme_init_ns_head()
3560 	ret = nvme_global_check_duplicate_ids(ctrl->subsys, &info->ids);  in nvme_init_ns_head()
3567 		 * and in user space the /dev/disk/by-id/ links rely on it.  in nvme_init_ns_head()
3569 		 * If the device also claims to be multi-path capable back off  in nvme_init_ns_head()
3579 		if ((ns->ctrl->ops->flags & NVME_F_FABRICS) || /* !PCIe */  in nvme_init_ns_head()
3580 		    ((ns->ctrl->subsys->cmic & NVME_CTRL_CMIC_MULTI_CTRL) &&  in nvme_init_ns_head()
3581 		     info->is_shared)) {  in nvme_init_ns_head()
3582 			dev_err(ctrl->device,  in nvme_init_ns_head()
3584 				info->nsid);  in nvme_init_ns_head()
3588 		dev_err(ctrl->device,  in nvme_init_ns_head()
3589 			"clearing duplicate IDs for nsid %d\n", info->nsid);  in nvme_init_ns_head()
3590 		dev_err(ctrl->device,  in nvme_init_ns_head()
3591 			"use of /dev/disk/by-id/ may cause data corruption\n");  in nvme_init_ns_head()
3592 		memset(&info->ids.nguid, 0, sizeof(info->ids.nguid));  in nvme_init_ns_head()
3593 		memset(&info->ids.uuid, 0, sizeof(info->ids.uuid));  in nvme_init_ns_head()
3594 		memset(&info->ids.eui64, 0, sizeof(info->ids.eui64));  in nvme_init_ns_head()
3595 		ctrl->quirks |= NVME_QUIRK_BOGUS_NID;  in nvme_init_ns_head()
3598 	mutex_lock(&ctrl->subsys->lock);  in nvme_init_ns_head()
3599 	head = nvme_find_ns_head(ctrl, info->nsid);  in nvme_init_ns_head()
3601 		ret = nvme_subsys_check_duplicate_ids(ctrl->subsys, &info->ids);  in nvme_init_ns_head()
3603 			dev_err(ctrl->device,  in nvme_init_ns_head()
3605 				info->nsid);  in nvme_init_ns_head()
3614 		ret = -EINVAL;  in nvme_init_ns_head()
3615 		if (!info->is_shared || !head->shared) {  in nvme_init_ns_head()
3616 			dev_err(ctrl->device,  in nvme_init_ns_head()
3618 				info->nsid);  in nvme_init_ns_head()
3621 		if (!nvme_ns_ids_equal(&head->ids, &info->ids)) {  in nvme_init_ns_head()
3622 			dev_err(ctrl->device,  in nvme_init_ns_head()
3624 					info->nsid);  in nvme_init_ns_head()
3629 			dev_warn(ctrl->device,  in nvme_init_ns_head()
3631 				info->nsid);  in nvme_init_ns_head()
3632 			dev_warn_once(ctrl->device,  in nvme_init_ns_head()
3637 	list_add_tail_rcu(&ns->siblings, &head->list);  in nvme_init_ns_head()
3638 	ns->head = head;  in nvme_init_ns_head()
3639 	mutex_unlock(&ctrl->subsys->lock);  in nvme_init_ns_head()
3645 	mutex_unlock(&ctrl->subsys->lock);  in nvme_init_ns_head()
3653 	down_read(&ctrl->namespaces_rwsem);  in nvme_find_get_ns()
3654 	list_for_each_entry(ns, &ctrl->namespaces, list) {  in nvme_find_get_ns()
3655 		if (ns->head->ns_id == nsid) {  in nvme_find_get_ns()
3661 		if (ns->head->ns_id > nsid)  in nvme_find_get_ns()
3664 	up_read(&ctrl->namespaces_rwsem);  in nvme_find_get_ns()
3676 	list_for_each_entry_reverse(tmp, &ns->ctrl->namespaces, list) {  in nvme_ns_add_to_ctrl_list()
3677 		if (tmp->head->ns_id < ns->head->ns_id) {  in nvme_ns_add_to_ctrl_list()
3678 			list_add(&ns->list, &tmp->list);  in nvme_ns_add_to_ctrl_list()
3682 	list_add(&ns->list, &ns->ctrl->namespaces);  in nvme_ns_add_to_ctrl_list()
3689 	int node = ctrl->numa_node;  in nvme_alloc_ns()
3695 	disk = blk_mq_alloc_disk(ctrl->tagset, ns);  in nvme_alloc_ns()
3698 	disk->fops = &nvme_bdev_ops;  in nvme_alloc_ns()
3699 	disk->private_data = ns;  in nvme_alloc_ns()
3701 	ns->disk = disk;  in nvme_alloc_ns()
3702 	ns->queue = disk->queue;  in nvme_alloc_ns()
3704 	if (ctrl->opts && ctrl->opts->data_digest)  in nvme_alloc_ns()
3705 		blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, ns->queue);  in nvme_alloc_ns()
3707 	blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue);  in nvme_alloc_ns()
3708 	if (ctrl->ops->supports_pci_p2pdma &&  in nvme_alloc_ns()
3709 	    ctrl->ops->supports_pci_p2pdma(ctrl))  in nvme_alloc_ns()
3710 		blk_queue_flag_set(QUEUE_FLAG_PCI_P2PDMA, ns->queue);  in nvme_alloc_ns()
3712 	ns->ctrl = ctrl;  in nvme_alloc_ns()
3713 	kref_init(&ns->kref);  in nvme_alloc_ns()
3729 	if (nvme_ns_head_multipath(ns->head)) {  in nvme_alloc_ns()
3730 		sprintf(disk->disk_name, "nvme%dc%dn%d", ctrl->subsys->instance,  in nvme_alloc_ns()
3731 			ctrl->instance, ns->head->instance);  in nvme_alloc_ns()
3732 		disk->flags |= GENHD_FL_HIDDEN;  in nvme_alloc_ns()
3734 		sprintf(disk->disk_name, "nvme%dn%d", ctrl->subsys->instance,  in nvme_alloc_ns()
3735 			ns->head->instance);  in nvme_alloc_ns()
3737 		sprintf(disk->disk_name, "nvme%dn%d", ctrl->instance,  in nvme_alloc_ns()
3738 			ns->head->instance);  in nvme_alloc_ns()
3744 	down_write(&ctrl->namespaces_rwsem);  in nvme_alloc_ns()
3749 	if (test_bit(NVME_CTRL_FROZEN, &ctrl->flags)) {  in nvme_alloc_ns()
3750 		up_write(&ctrl->namespaces_rwsem);  in nvme_alloc_ns()
3754 	up_write(&ctrl->namespaces_rwsem);  in nvme_alloc_ns()
3757 	if (device_add_disk(ctrl->device, ns->disk, nvme_ns_attr_groups))  in nvme_alloc_ns()
3760 	if (!nvme_ns_head_multipath(ns->head))  in nvme_alloc_ns()
3763 	nvme_mpath_add_disk(ns, info->anagrpid);  in nvme_alloc_ns()
3764 	nvme_fault_inject_init(&ns->fault_inject, ns->disk->disk_name);  in nvme_alloc_ns()
3767 	 * Set ns->disk->device->driver_data to ns so we can access  in nvme_alloc_ns()
3768 	 * ns->head->passthru_err_log_enabled in  in nvme_alloc_ns()
3771 	dev_set_drvdata(disk_to_dev(ns->disk), ns);  in nvme_alloc_ns()
3777 	down_write(&ctrl->namespaces_rwsem);  in nvme_alloc_ns()
3778 	list_del_init(&ns->list);  in nvme_alloc_ns()
3779 	up_write(&ctrl->namespaces_rwsem);  in nvme_alloc_ns()
3781 	mutex_lock(&ctrl->subsys->lock);  in nvme_alloc_ns()
3782 	list_del_rcu(&ns->siblings);  in nvme_alloc_ns()
3783 	if (list_empty(&ns->head->list))  in nvme_alloc_ns()
3784 		list_del_init(&ns->head->entry);  in nvme_alloc_ns()
3785 	mutex_unlock(&ctrl->subsys->lock);  in nvme_alloc_ns()
3786 	nvme_put_ns_head(ns->head);  in nvme_alloc_ns()
3797 	if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))  in nvme_ns_remove()
3800 	clear_bit(NVME_NS_READY, &ns->flags);  in nvme_ns_remove()
3801 	set_capacity(ns->disk, 0);  in nvme_ns_remove()
3802 	nvme_fault_inject_fini(&ns->fault_inject);  in nvme_ns_remove()
3808 	synchronize_srcu(&ns->head->srcu);  in nvme_ns_remove()
3812 		synchronize_srcu(&ns->head->srcu);  in nvme_ns_remove()
3814 	mutex_lock(&ns->ctrl->subsys->lock);  in nvme_ns_remove()
3815 	list_del_rcu(&ns->siblings);  in nvme_ns_remove()
3816 	if (list_empty(&ns->head->list)) {  in nvme_ns_remove()
3817 		list_del_init(&ns->head->entry);  in nvme_ns_remove()
3820 	mutex_unlock(&ns->ctrl->subsys->lock);  in nvme_ns_remove()
3822 	/* guarantee not available in head->list */  in nvme_ns_remove()
3823 	synchronize_srcu(&ns->head->srcu);  in nvme_ns_remove()
3825 	if (!nvme_ns_head_multipath(ns->head))  in nvme_ns_remove()
3826 		nvme_cdev_del(&ns->cdev, &ns->cdev_device);  in nvme_ns_remove()
3827 	del_gendisk(ns->disk);  in nvme_ns_remove()
3829 	down_write(&ns->ctrl->namespaces_rwsem);  in nvme_ns_remove()
3830 	list_del_init(&ns->list);  in nvme_ns_remove()
3831 	up_write(&ns->ctrl->namespaces_rwsem);  in nvme_ns_remove()
3834 		nvme_mpath_shutdown_disk(ns->head);  in nvme_ns_remove()
3852 	if (!nvme_ns_ids_equal(&ns->head->ids, &info->ids)) {  in nvme_validate_ns()
3853 		dev_err(ns->ctrl->device,  in nvme_validate_ns()
3854 			"identifiers changed for nsid %d\n", ns->head->ns_id);  in nvme_validate_ns()
3880 		dev_warn(ctrl->device,  in nvme_scan_ns()
3890 	if ((ctrl->cap & NVME_CAP_CRMS_CRIMS) ||  in nvme_scan_ns()
3921 	down_write(&ctrl->namespaces_rwsem);  in nvme_remove_invalid_namespaces()
3922 	list_for_each_entry_safe(ns, next, &ctrl->namespaces, list) {  in nvme_remove_invalid_namespaces()
3923 		if (ns->head->ns_id > nsid)  in nvme_remove_invalid_namespaces()
3924 			list_move_tail(&ns->list, &rm_list);  in nvme_remove_invalid_namespaces()
3926 	up_write(&ctrl->namespaces_rwsem);  in nvme_remove_invalid_namespaces()
3942 		return -ENOMEM;  in nvme_scan_ns_list()
3951 		ret = nvme_submit_sync_cmd(ctrl->admin_q, &cmd, ns_list,  in nvme_scan_ns_list()
3954 			dev_warn(ctrl->device,  in nvme_scan_ns_list()
3983 	nn = le32_to_cpu(id->nn);  in nvme_scan_ns_sequential()
4011 		dev_warn(ctrl->device,  in nvme_clear_changed_ns_log()
4024 	if (nvme_ctrl_state(ctrl) != NVME_CTRL_LIVE || !ctrl->tagset)  in nvme_scan_work()
4030 	 * such scenario. Controller's non-mdts limits are reported in the unit  in nvme_scan_work()
4032 	 * namespace. Hence re-read the limits at the time of ns allocation.  in nvme_scan_work()
4036 		dev_warn(ctrl->device,  in nvme_scan_work()
4037 			"reading non-mdts-limits failed: %d\n", ret);  in nvme_scan_work()
4041 	if (test_and_clear_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events)) {  in nvme_scan_work()
4042 		dev_info(ctrl->device, "rescanning namespaces.\n");  in nvme_scan_work()
4046 	mutex_lock(&ctrl->scan_lock);  in nvme_scan_work()
4059 	mutex_unlock(&ctrl->scan_lock);  in nvme_scan_work()
4086 	flush_work(&ctrl->scan_work);  in nvme_remove_namespaces()
4097 	/* this is a no-op when called from the controller reset handler */  in nvme_remove_namespaces()
4100 	down_write(&ctrl->namespaces_rwsem);  in nvme_remove_namespaces()
4101 	list_splice_init(&ctrl->namespaces, &ns_list);  in nvme_remove_namespaces()
4102 	up_write(&ctrl->namespaces_rwsem);  in nvme_remove_namespaces()
4113 	struct nvmf_ctrl_options *opts = ctrl->opts;  in nvme_class_uevent()
4116 	ret = add_uevent_var(env, "NVME_TRTYPE=%s", ctrl->ops->name);  in nvme_class_uevent()
4121 		ret = add_uevent_var(env, "NVME_TRADDR=%s", opts->traddr);  in nvme_class_uevent()
4126 				opts->trsvcid ?: "none");  in nvme_class_uevent()
4131 				opts->host_traddr ?: "none");  in nvme_class_uevent()
4136 				opts->host_iface ?: "none");  in nvme_class_uevent()
4145 	kobject_uevent_env(&ctrl->device->kobj, KOBJ_CHANGE, envp);  in nvme_change_uevent()
4151 	u32 aen_result = ctrl->aen_result;  in nvme_aen_uevent()
4153 	ctrl->aen_result = 0;  in nvme_aen_uevent()
4160 	kobject_uevent_env(&ctrl->device->kobj, KOBJ_CHANGE, envp);  in nvme_aen_uevent()
4177 		ctrl->ops->submit_async_event(ctrl);  in nvme_async_event_work()
4185 	if (ctrl->ops->reg_read32(ctrl, NVME_REG_CSTS, &csts))  in nvme_ctrl_pp_status()
4191 	return ((ctrl->ctrl_config & NVME_CC_ENABLE) && (csts & NVME_CSTS_PP));  in nvme_ctrl_pp_status()
4205 		dev_warn(ctrl->device, "Get FW SLOT INFO log error\n");  in nvme_get_fw_slot_info()
4209 	cur_fw_slot = log->afi & 0x7;  in nvme_get_fw_slot_info()
4210 	next_fw_slot = (log->afi & 0x70) >> 4;  in nvme_get_fw_slot_info()
4212 		dev_info(ctrl->device,  in nvme_get_fw_slot_info()
4217 	memcpy(ctrl->subsys->firmware_rev, &log->frs[cur_fw_slot - 1],  in nvme_get_fw_slot_info()
4218 		sizeof(ctrl->subsys->firmware_rev));  in nvme_get_fw_slot_info()
4232 	if (ctrl->mtfa)  in nvme_fw_act_work()
4234 				msecs_to_jiffies(ctrl->mtfa * 100);  in nvme_fw_act_work()
4242 			dev_warn(ctrl->device,  in nvme_fw_act_work()
4257 	queue_work(nvme_wq, &ctrl->async_event_work);  in nvme_fw_act_work()
4277 		set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);  in nvme_handle_aen_notice()
4288 			queue_work(nvme_wq, &ctrl->fw_act_work);  in nvme_handle_aen_notice()
4293 		if (!ctrl->ana_log_buf)  in nvme_handle_aen_notice()
4295 		queue_work(nvme_wq, &ctrl->ana_work);  in nvme_handle_aen_notice()
4299 		ctrl->aen_result = result;  in nvme_handle_aen_notice()
4302 		dev_warn(ctrl->device, "async event result %08x\n", result);  in nvme_handle_aen_notice()
4309 	dev_warn(ctrl->device, "resetting controller due to AER\n");  in nvme_handle_aer_persistent_error()
4316 	u32 result = le32_to_cpu(res->u32);  in nvme_complete_async_event()
4342 		ctrl->aen_result = result;  in nvme_complete_async_event()
4349 		queue_work(nvme_wq, &ctrl->async_event_work);  in nvme_complete_async_event()
4359 	set->ops = ops;  in nvme_alloc_admin_tag_set()
4360 	set->queue_depth = NVME_AQ_MQ_TAG_DEPTH;  in nvme_alloc_admin_tag_set()
4361 	if (ctrl->ops->flags & NVME_F_FABRICS)  in nvme_alloc_admin_tag_set()
4362 		set->reserved_tags = NVMF_RESERVED_TAGS;  in nvme_alloc_admin_tag_set()
4363 	set->numa_node = ctrl->numa_node;  in nvme_alloc_admin_tag_set()
4364 	set->flags = BLK_MQ_F_NO_SCHED;  in nvme_alloc_admin_tag_set()
4365 	if (ctrl->ops->flags & NVME_F_BLOCKING)  in nvme_alloc_admin_tag_set()
4366 		set->flags |= BLK_MQ_F_BLOCKING;  in nvme_alloc_admin_tag_set()
4367 	set->cmd_size = cmd_size;  in nvme_alloc_admin_tag_set()
4368 	set->driver_data = ctrl;  in nvme_alloc_admin_tag_set()
4369 	set->nr_hw_queues = 1;  in nvme_alloc_admin_tag_set()
4370 	set->timeout = NVME_ADMIN_TIMEOUT;  in nvme_alloc_admin_tag_set()
4375 	ctrl->admin_q = blk_mq_init_queue(set);  in nvme_alloc_admin_tag_set()
4376 	if (IS_ERR(ctrl->admin_q)) {  in nvme_alloc_admin_tag_set()
4377 		ret = PTR_ERR(ctrl->admin_q);  in nvme_alloc_admin_tag_set()
4381 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_alloc_admin_tag_set()
4382 		ctrl->fabrics_q = blk_mq_init_queue(set);  in nvme_alloc_admin_tag_set()
4383 		if (IS_ERR(ctrl->fabrics_q)) {  in nvme_alloc_admin_tag_set()
4384 			ret = PTR_ERR(ctrl->fabrics_q);  in nvme_alloc_admin_tag_set()
4389 	ctrl->admin_tagset = set;  in nvme_alloc_admin_tag_set()
4393 	blk_mq_destroy_queue(ctrl->admin_q);  in nvme_alloc_admin_tag_set()
4394 	blk_put_queue(ctrl->admin_q);  in nvme_alloc_admin_tag_set()
4397 	ctrl->admin_q = NULL;  in nvme_alloc_admin_tag_set()
4398 	ctrl->fabrics_q = NULL;  in nvme_alloc_admin_tag_set()
4405 	blk_mq_destroy_queue(ctrl->admin_q);  in nvme_remove_admin_tag_set()
4406 	blk_put_queue(ctrl->admin_q);  in nvme_remove_admin_tag_set()
4407 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_remove_admin_tag_set()
4408 		blk_mq_destroy_queue(ctrl->fabrics_q);  in nvme_remove_admin_tag_set()
4409 		blk_put_queue(ctrl->fabrics_q);  in nvme_remove_admin_tag_set()
4411 	blk_mq_free_tag_set(ctrl->admin_tagset);  in nvme_remove_admin_tag_set()
4422 	set->ops = ops;  in nvme_alloc_io_tag_set()
4423 	set->queue_depth = min_t(unsigned, ctrl->sqsize, BLK_MQ_MAX_DEPTH - 1);  in nvme_alloc_io_tag_set()
4428 	if (ctrl->quirks & NVME_QUIRK_SHARED_TAGS)  in nvme_alloc_io_tag_set()
4429 		set->reserved_tags = NVME_AQ_DEPTH;  in nvme_alloc_io_tag_set()
4430 	else if (ctrl->ops->flags & NVME_F_FABRICS)  in nvme_alloc_io_tag_set()
4431 		set->reserved_tags = NVMF_RESERVED_TAGS;  in nvme_alloc_io_tag_set()
4432 	set->numa_node = ctrl->numa_node;  in nvme_alloc_io_tag_set()
4433 	set->flags = BLK_MQ_F_SHOULD_MERGE;  in nvme_alloc_io_tag_set()
4434 	if (ctrl->ops->flags & NVME_F_BLOCKING)  in nvme_alloc_io_tag_set()
4435 		set->flags |= BLK_MQ_F_BLOCKING;  in nvme_alloc_io_tag_set()
4436 	set->cmd_size = cmd_size,  in nvme_alloc_io_tag_set()
4437 	set->driver_data = ctrl;  in nvme_alloc_io_tag_set()
4438 	set->nr_hw_queues = ctrl->queue_count - 1;  in nvme_alloc_io_tag_set()
4439 	set->timeout = NVME_IO_TIMEOUT;  in nvme_alloc_io_tag_set()
4440 	set->nr_maps = nr_maps;  in nvme_alloc_io_tag_set()
4445 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_alloc_io_tag_set()
4446 		ctrl->connect_q = blk_mq_init_queue(set);  in nvme_alloc_io_tag_set()
4447         	if (IS_ERR(ctrl->connect_q)) {  in nvme_alloc_io_tag_set()
4448 			ret = PTR_ERR(ctrl->connect_q);  in nvme_alloc_io_tag_set()
4452 				   ctrl->connect_q);  in nvme_alloc_io_tag_set()
4455 	ctrl->tagset = set;  in nvme_alloc_io_tag_set()
4460 	ctrl->connect_q = NULL;  in nvme_alloc_io_tag_set()
4467 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_remove_io_tag_set()
4468 		blk_mq_destroy_queue(ctrl->connect_q);  in nvme_remove_io_tag_set()
4469 		blk_put_queue(ctrl->connect_q);  in nvme_remove_io_tag_set()
4471 	blk_mq_free_tag_set(ctrl->tagset);  in nvme_remove_io_tag_set()
4481 	flush_work(&ctrl->async_event_work);  in nvme_stop_ctrl()
4482 	cancel_work_sync(&ctrl->fw_act_work);  in nvme_stop_ctrl()
4483 	if (ctrl->ops->stop_ctrl)  in nvme_stop_ctrl()
4484 		ctrl->ops->stop_ctrl(ctrl);  in nvme_stop_ctrl()
4494 	 * to re-read the discovery log page to learn about possible changes  in nvme_start_ctrl()
4498 	if (test_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags) &&  in nvme_start_ctrl()
4502 	if (ctrl->queue_count > 1) {  in nvme_start_ctrl()
4509 	set_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags);  in nvme_start_ctrl()
4516 	nvme_fault_inject_fini(&ctrl->fault_inject);  in nvme_uninit_ctrl()
4517 	dev_pm_qos_hide_latency_tolerance(ctrl->device);  in nvme_uninit_ctrl()
4518 	cdev_device_del(&ctrl->cdev, ctrl->device);  in nvme_uninit_ctrl()
4528 	xa_for_each(&ctrl->cels, i, cel) {  in nvme_free_cels()
4529 		xa_erase(&ctrl->cels, i);  in nvme_free_cels()
4533 	xa_destroy(&ctrl->cels);  in nvme_free_cels()
4540 	struct nvme_subsystem *subsys = ctrl->subsys;  in nvme_free_ctrl()
4542 	if (!subsys || ctrl->instance != subsys->instance)  in nvme_free_ctrl()
4543 		ida_free(&nvme_instance_ida, ctrl->instance);  in nvme_free_ctrl()
4544 	key_put(ctrl->tls_key);  in nvme_free_ctrl()
4549 	__free_page(ctrl->discard_page);  in nvme_free_ctrl()
4550 	free_opal_dev(ctrl->opal_dev);  in nvme_free_ctrl()
4554 		list_del(&ctrl->subsys_entry);  in nvme_free_ctrl()
4555 		sysfs_remove_link(&subsys->dev.kobj, dev_name(ctrl->device));  in nvme_free_ctrl()
4559 	ctrl->ops->free_ctrl(ctrl);  in nvme_free_ctrl()
4575 	WRITE_ONCE(ctrl->state, NVME_CTRL_NEW);  in nvme_init_ctrl()
4576 	ctrl->passthru_err_log_enabled = false;  in nvme_init_ctrl()
4577 	clear_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags);  in nvme_init_ctrl()
4578 	spin_lock_init(&ctrl->lock);  in nvme_init_ctrl()
4579 	mutex_init(&ctrl->scan_lock);  in nvme_init_ctrl()
4580 	INIT_LIST_HEAD(&ctrl->namespaces);  in nvme_init_ctrl()
4581 	xa_init(&ctrl->cels);  in nvme_init_ctrl()
4582 	init_rwsem(&ctrl->namespaces_rwsem);  in nvme_init_ctrl()
4583 	ctrl->dev = dev;  in nvme_init_ctrl()
4584 	ctrl->ops = ops;  in nvme_init_ctrl()
4585 	ctrl->quirks = quirks;  in nvme_init_ctrl()
4586 	ctrl->numa_node = NUMA_NO_NODE;  in nvme_init_ctrl()
4587 	INIT_WORK(&ctrl->scan_work, nvme_scan_work);  in nvme_init_ctrl()
4588 	INIT_WORK(&ctrl->async_event_work, nvme_async_event_work);  in nvme_init_ctrl()
4589 	INIT_WORK(&ctrl->fw_act_work, nvme_fw_act_work);  in nvme_init_ctrl()
4590 	INIT_WORK(&ctrl->delete_work, nvme_delete_ctrl_work);  in nvme_init_ctrl()
4591 	init_waitqueue_head(&ctrl->state_wq);  in nvme_init_ctrl()
4593 	INIT_DELAYED_WORK(&ctrl->ka_work, nvme_keep_alive_work);  in nvme_init_ctrl()
4594 	INIT_DELAYED_WORK(&ctrl->failfast_work, nvme_failfast_work);  in nvme_init_ctrl()
4595 	memset(&ctrl->ka_cmd, 0, sizeof(ctrl->ka_cmd));  in nvme_init_ctrl()
4596 	ctrl->ka_cmd.common.opcode = nvme_admin_keep_alive;  in nvme_init_ctrl()
4597 	ctrl->ka_last_check_time = jiffies;  in nvme_init_ctrl()
4601 	ctrl->discard_page = alloc_page(GFP_KERNEL);  in nvme_init_ctrl()
4602 	if (!ctrl->discard_page) {  in nvme_init_ctrl()
4603 		ret = -ENOMEM;  in nvme_init_ctrl()
4610 	ctrl->instance = ret;  in nvme_init_ctrl()
4612 	device_initialize(&ctrl->ctrl_device);  in nvme_init_ctrl()
4613 	ctrl->device = &ctrl->ctrl_device;  in nvme_init_ctrl()
4614 	ctrl->device->devt = MKDEV(MAJOR(nvme_ctrl_base_chr_devt),  in nvme_init_ctrl()
4615 			ctrl->instance);  in nvme_init_ctrl()
4616 	ctrl->device->class = nvme_class;  in nvme_init_ctrl()
4617 	ctrl->device->parent = ctrl->dev;  in nvme_init_ctrl()
4618 	if (ops->dev_attr_groups)  in nvme_init_ctrl()
4619 		ctrl->device->groups = ops->dev_attr_groups;  in nvme_init_ctrl()
4621 		ctrl->device->groups = nvme_dev_attr_groups;  in nvme_init_ctrl()
4622 	ctrl->device->release = nvme_free_ctrl;  in nvme_init_ctrl()
4623 	dev_set_drvdata(ctrl->device, ctrl);  in nvme_init_ctrl()
4624 	ret = dev_set_name(ctrl->device, "nvme%d", ctrl->instance);  in nvme_init_ctrl()
4629 	cdev_init(&ctrl->cdev, &nvme_dev_fops);  in nvme_init_ctrl()
4630 	ctrl->cdev.owner = ops->module;  in nvme_init_ctrl()
4631 	ret = cdev_device_add(&ctrl->cdev, ctrl->device);  in nvme_init_ctrl()
4639 	ctrl->device->power.set_latency_tolerance = nvme_set_latency_tolerance;  in nvme_init_ctrl()
4640 	dev_pm_qos_update_user_latency_tolerance(ctrl->device,  in nvme_init_ctrl()
4643 	nvme_fault_inject_init(&ctrl->fault_inject, dev_name(ctrl->device));  in nvme_init_ctrl()
4651 	nvme_fault_inject_fini(&ctrl->fault_inject);  in nvme_init_ctrl()
4652 	dev_pm_qos_hide_latency_tolerance(ctrl->device);  in nvme_init_ctrl()
4653 	cdev_device_del(&ctrl->cdev, ctrl->device);  in nvme_init_ctrl()
4656 	kfree_const(ctrl->device->kobj.name);  in nvme_init_ctrl()
4658 	ida_free(&nvme_instance_ida, ctrl->instance);  in nvme_init_ctrl()
4660 	if (ctrl->discard_page)  in nvme_init_ctrl()
4661 		__free_page(ctrl->discard_page);  in nvme_init_ctrl()
4671 	down_read(&ctrl->namespaces_rwsem);  in nvme_mark_namespaces_dead()
4672 	list_for_each_entry(ns, &ctrl->namespaces, list)  in nvme_mark_namespaces_dead()
4673 		blk_mark_disk_dead(ns->disk);  in nvme_mark_namespaces_dead()
4674 	up_read(&ctrl->namespaces_rwsem);  in nvme_mark_namespaces_dead()
4682 	down_read(&ctrl->namespaces_rwsem);  in nvme_unfreeze()
4683 	list_for_each_entry(ns, &ctrl->namespaces, list)  in nvme_unfreeze()
4684 		blk_mq_unfreeze_queue(ns->queue);  in nvme_unfreeze()
4685 	up_read(&ctrl->namespaces_rwsem);  in nvme_unfreeze()
4686 	clear_bit(NVME_CTRL_FROZEN, &ctrl->flags);  in nvme_unfreeze()
4694 	down_read(&ctrl->namespaces_rwsem);  in nvme_wait_freeze_timeout()
4695 	list_for_each_entry(ns, &ctrl->namespaces, list) {  in nvme_wait_freeze_timeout()
4696 		timeout = blk_mq_freeze_queue_wait_timeout(ns->queue, timeout);  in nvme_wait_freeze_timeout()
4700 	up_read(&ctrl->namespaces_rwsem);  in nvme_wait_freeze_timeout()
4709 	down_read(&ctrl->namespaces_rwsem);  in nvme_wait_freeze()
4710 	list_for_each_entry(ns, &ctrl->namespaces, list)  in nvme_wait_freeze()
4711 		blk_mq_freeze_queue_wait(ns->queue);  in nvme_wait_freeze()
4712 	up_read(&ctrl->namespaces_rwsem);  in nvme_wait_freeze()
4720 	set_bit(NVME_CTRL_FROZEN, &ctrl->flags);  in nvme_start_freeze()
4721 	down_read(&ctrl->namespaces_rwsem);  in nvme_start_freeze()
4722 	list_for_each_entry(ns, &ctrl->namespaces, list)  in nvme_start_freeze()
4723 		blk_freeze_queue_start(ns->queue);  in nvme_start_freeze()
4724 	up_read(&ctrl->namespaces_rwsem);  in nvme_start_freeze()
4730 	if (!ctrl->tagset)  in nvme_quiesce_io_queues()
4732 	if (!test_and_set_bit(NVME_CTRL_STOPPED, &ctrl->flags))  in nvme_quiesce_io_queues()
4733 		blk_mq_quiesce_tagset(ctrl->tagset);  in nvme_quiesce_io_queues()
4735 		blk_mq_wait_quiesce_done(ctrl->tagset);  in nvme_quiesce_io_queues()
4741 	if (!ctrl->tagset)  in nvme_unquiesce_io_queues()
4743 	if (test_and_clear_bit(NVME_CTRL_STOPPED, &ctrl->flags))  in nvme_unquiesce_io_queues()
4744 		blk_mq_unquiesce_tagset(ctrl->tagset);  in nvme_unquiesce_io_queues()
4750 	if (!test_and_set_bit(NVME_CTRL_ADMIN_Q_STOPPED, &ctrl->flags))  in nvme_quiesce_admin_queue()
4751 		blk_mq_quiesce_queue(ctrl->admin_q);  in nvme_quiesce_admin_queue()
4753 		blk_mq_wait_quiesce_done(ctrl->admin_q->tag_set);  in nvme_quiesce_admin_queue()
4759 	if (test_and_clear_bit(NVME_CTRL_ADMIN_Q_STOPPED, &ctrl->flags))  in nvme_unquiesce_admin_queue()
4760 		blk_mq_unquiesce_queue(ctrl->admin_q);  in nvme_unquiesce_admin_queue()
4768 	down_read(&ctrl->namespaces_rwsem);  in nvme_sync_io_queues()
4769 	list_for_each_entry(ns, &ctrl->namespaces, list)  in nvme_sync_io_queues()
4770 		blk_sync_queue(ns->queue);  in nvme_sync_io_queues()
4771 	up_read(&ctrl->namespaces_rwsem);  in nvme_sync_io_queues()
4778 	if (ctrl->admin_q)  in nvme_sync_queues()
4779 		blk_sync_queue(ctrl->admin_q);  in nvme_sync_queues()
4785 	if (file->f_op != &nvme_dev_fops)  in nvme_ctrl_from_file()
4787 	return file->private_data;  in nvme_ctrl_from_file()
4825 	int result = -ENOMEM;  in nvme_core_init()
4829 	nvme_wq = alloc_workqueue("nvme-wq",  in nvme_core_init()
4834 	nvme_reset_wq = alloc_workqueue("nvme-reset-wq",  in nvme_core_init()
4839 	nvme_delete_wq = alloc_workqueue("nvme-delete-wq",  in nvme_core_init()
4854 	nvme_class->dev_uevent = nvme_class_uevent;  in nvme_core_init()
4856 	nvme_subsys_class = class_create("nvme-subsystem");  in nvme_core_init()
4863 				     "nvme-generic");  in nvme_core_init()
4867 	nvme_ns_chr_class = class_create("nvme-generic");  in nvme_core_init()