1 // SPDX-License-Identifier: GPL-2.0
4  * Copyright (c) 2011-2014, Intel Corporation.
9 #include <linux/blk-mq.h>
10 #include <linux/blk-integrity.h>
17 #include <linux/backing-dev.h>
29 #include <linux/nvme-auth.h>
37 	struct nvme_ns_ids ids;  member
108  * nvme_wq - hosts nvme related works that are not reset or delete
109  * nvme_reset_wq - hosts nvme reset works
110  * nvme_delete_wq - hosts nvme delete works
113  * keep-alive, periodic reconnects etc. nvme_reset_wq
139 	.name = "nvme-subsystem",
145 	.name = "nvme-generic",
149 static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl,
151 static void nvme_update_keep_alive(struct nvme_ctrl *ctrl,
154 void nvme_queue_scan(struct nvme_ctrl *ctrl)  in nvme_queue_scan()  argument
159 	if (nvme_ctrl_state(ctrl) == NVME_CTRL_LIVE && ctrl->tagset)  in nvme_queue_scan()
160 		queue_work(nvme_wq, &ctrl->scan_work);  in nvme_queue_scan()
169 int nvme_try_sched_reset(struct nvme_ctrl *ctrl)  in nvme_try_sched_reset()  argument
171 	if (nvme_ctrl_state(ctrl) != NVME_CTRL_RESETTING)  in nvme_try_sched_reset()
172 		return -EBUSY;  in nvme_try_sched_reset()
173 	if (!queue_work(nvme_reset_wq, &ctrl->reset_work))  in nvme_try_sched_reset()
174 		return -EBUSY;  in nvme_try_sched_reset()
181 	struct nvme_ctrl *ctrl = container_of(to_delayed_work(work),  in nvme_failfast_work()  local
184 	if (nvme_ctrl_state(ctrl) != NVME_CTRL_CONNECTING)  in nvme_failfast_work()
187 	set_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags);  in nvme_failfast_work()
188 	dev_info(ctrl->device, "failfast expired\n");  in nvme_failfast_work()
189 	nvme_kick_requeue_lists(ctrl);  in nvme_failfast_work()
192 static inline void nvme_start_failfast_work(struct nvme_ctrl *ctrl)  in nvme_start_failfast_work()  argument
194 	if (!ctrl->opts || ctrl->opts->fast_io_fail_tmo == -1)  in nvme_start_failfast_work()
197 	schedule_delayed_work(&ctrl->failfast_work,  in nvme_start_failfast_work()
198 			      ctrl->opts->fast_io_fail_tmo * HZ);  in nvme_start_failfast_work()
201 static inline void nvme_stop_failfast_work(struct nvme_ctrl *ctrl)  in nvme_stop_failfast_work()  argument
203 	if (!ctrl->opts)  in nvme_stop_failfast_work()
206 	cancel_delayed_work_sync(&ctrl->failfast_work);  in nvme_stop_failfast_work()
207 	clear_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags);  in nvme_stop_failfast_work()
211 int nvme_reset_ctrl(struct nvme_ctrl *ctrl)  in nvme_reset_ctrl()  argument
213 	if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING))  in nvme_reset_ctrl()
214 		return -EBUSY;  in nvme_reset_ctrl()
215 	if (!queue_work(nvme_reset_wq, &ctrl->reset_work))  in nvme_reset_ctrl()
216 		return -EBUSY;  in nvme_reset_ctrl()
221 int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)  in nvme_reset_ctrl_sync()  argument
225 	ret = nvme_reset_ctrl(ctrl);  in nvme_reset_ctrl_sync()
227 		flush_work(&ctrl->reset_work);  in nvme_reset_ctrl_sync()
228 		if (nvme_ctrl_state(ctrl) != NVME_CTRL_LIVE)  in nvme_reset_ctrl_sync()
229 			ret = -ENETRESET;  in nvme_reset_ctrl_sync()
235 static void nvme_do_delete_ctrl(struct nvme_ctrl *ctrl)  in nvme_do_delete_ctrl()  argument
237 	dev_info(ctrl->device,  in nvme_do_delete_ctrl()
238 		 "Removing ctrl: NQN \"%s\"\n", nvmf_ctrl_subsysnqn(ctrl));  in nvme_do_delete_ctrl()
240 	flush_work(&ctrl->reset_work);  in nvme_do_delete_ctrl()
241 	nvme_stop_ctrl(ctrl);  in nvme_do_delete_ctrl()
242 	nvme_remove_namespaces(ctrl);  in nvme_do_delete_ctrl()
243 	ctrl->ops->delete_ctrl(ctrl);  in nvme_do_delete_ctrl()
244 	nvme_uninit_ctrl(ctrl);  in nvme_do_delete_ctrl()
249 	struct nvme_ctrl *ctrl =  in nvme_delete_ctrl_work()  local
252 	nvme_do_delete_ctrl(ctrl);  in nvme_delete_ctrl_work()
255 int nvme_delete_ctrl(struct nvme_ctrl *ctrl)  in nvme_delete_ctrl()  argument
257 	if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING))  in nvme_delete_ctrl()
258 		return -EBUSY;  in nvme_delete_ctrl()
259 	if (!queue_work(nvme_delete_wq, &ctrl->delete_work))  in nvme_delete_ctrl()
260 		return -EBUSY;  in nvme_delete_ctrl()
265 void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)  in nvme_delete_ctrl_sync()  argument
269 	 * since ->delete_ctrl can free the controller.  in nvme_delete_ctrl_sync()
271 	nvme_get_ctrl(ctrl);  in nvme_delete_ctrl_sync()
272 	if (nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING))  in nvme_delete_ctrl_sync()
273 		nvme_do_delete_ctrl(ctrl);  in nvme_delete_ctrl_sync()
274 	nvme_put_ctrl(ctrl);  in nvme_delete_ctrl_sync()
325 	crd = (nvme_req(req)->status & NVME_STATUS_CRD) >> 11;  in nvme_retry_req()
327 		delay = nvme_req(req)->ctrl->crdt[crd - 1] * 100;  in nvme_retry_req()
329 	nvme_req(req)->retries++;  in nvme_retry_req()
331 	blk_mq_delay_kick_requeue_list(req->q, delay);  in nvme_retry_req()
336 	struct nvme_ns *ns = req->q->queuedata;  in nvme_log_error()
341 		       ns->disk ? ns->disk->disk_name : "?",  in nvme_log_error()
342 		       nvme_get_opcode_str(nr->cmd->common.opcode),  in nvme_log_error()
343 		       nr->cmd->common.opcode,  in nvme_log_error()
344 		       nvme_sect_to_lba(ns->head, blk_rq_pos(req)),  in nvme_log_error()
345 		       blk_rq_bytes(req) >> ns->head->lba_shift,  in nvme_log_error()
346 		       nvme_get_error_status_str(nr->status),  in nvme_log_error()
347 		       NVME_SCT(nr->status),		/* Status Code Type */  in nvme_log_error()
348 		       nr->status & NVME_SC_MASK,	/* Status Code */  in nvme_log_error()
349 		       nr->status & NVME_STATUS_MORE ? "MORE " : "",  in nvme_log_error()
350 		       nr->status & NVME_STATUS_DNR  ? "DNR "  : "");  in nvme_log_error()
355 			   dev_name(nr->ctrl->device),  in nvme_log_error()
356 			   nvme_get_admin_opcode_str(nr->cmd->common.opcode),  in nvme_log_error()
357 			   nr->cmd->common.opcode,  in nvme_log_error()
358 			   nvme_get_error_status_str(nr->status),  in nvme_log_error()
359 			   NVME_SCT(nr->status),	/* Status Code Type */  in nvme_log_error()
360 			   nr->status & NVME_SC_MASK,	/* Status Code */  in nvme_log_error()
361 			   nr->status & NVME_STATUS_MORE ? "MORE " : "",  in nvme_log_error()
362 			   nr->status & NVME_STATUS_DNR  ? "DNR "  : "");  in nvme_log_error()
367 	struct nvme_ns *ns = req->q->queuedata;  in nvme_log_err_passthru()
372 		ns ? ns->disk->disk_name : dev_name(nr->ctrl->device),  in nvme_log_err_passthru()
373 		ns ? nvme_get_opcode_str(nr->cmd->common.opcode) :  in nvme_log_err_passthru()
374 		     nvme_get_admin_opcode_str(nr->cmd->common.opcode),  in nvme_log_err_passthru()
375 		nr->cmd->common.opcode,  in nvme_log_err_passthru()
376 		nvme_get_error_status_str(nr->status),  in nvme_log_err_passthru()
377 		NVME_SCT(nr->status),		/* Status Code Type */  in nvme_log_err_passthru()
378 		nr->status & NVME_SC_MASK,	/* Status Code */  in nvme_log_err_passthru()
379 		nr->status & NVME_STATUS_MORE ? "MORE " : "",  in nvme_log_err_passthru()
380 		nr->status & NVME_STATUS_DNR  ? "DNR "  : "",  in nvme_log_err_passthru()
381 		nr->cmd->common.cdw10,  in nvme_log_err_passthru()
382 		nr->cmd->common.cdw11,  in nvme_log_err_passthru()
383 		nr->cmd->common.cdw12,  in nvme_log_err_passthru()
384 		nr->cmd->common.cdw13,  in nvme_log_err_passthru()
385 		nr->cmd->common.cdw14,  in nvme_log_err_passthru()
386 		nr->cmd->common.cdw14);  in nvme_log_err_passthru()
398 	if (likely(nvme_req(req)->status == 0))  in nvme_decide_disposition()
402 	    (nvme_req(req)->status & NVME_STATUS_DNR) ||  in nvme_decide_disposition()
403 	    nvme_req(req)->retries >= nvme_max_retries)  in nvme_decide_disposition()
406 	if ((nvme_req(req)->status & NVME_SCT_SC_MASK) == NVME_SC_AUTH_REQUIRED)  in nvme_decide_disposition()
409 	if (req->cmd_flags & REQ_NVME_MPATH) {  in nvme_decide_disposition()
410 		if (nvme_is_path_error(nvme_req(req)->status) ||  in nvme_decide_disposition()
411 		    blk_queue_dying(req->q))  in nvme_decide_disposition()
414 		if (blk_queue_dying(req->q))  in nvme_decide_disposition()
425 		struct nvme_ns *ns = req->q->queuedata;  in nvme_end_req_zoned()
427 		req->__sector = nvme_lba_to_sect(ns->head,  in nvme_end_req_zoned()
428 			le64_to_cpu(nvme_req(req)->result.u64));  in nvme_end_req_zoned()
434 	if (unlikely(nvme_req(req)->status && !(req->rq_flags & RQF_QUIET))) {  in __nvme_end_req()
442 	if (req->cmd_flags & REQ_NVME_MPATH)  in __nvme_end_req()
448 	blk_status_t status = nvme_error_status(nvme_req(req)->status);  in nvme_end_req()
456 	struct nvme_ctrl *ctrl = nvme_req(req)->ctrl;  in nvme_complete_rq()  local
462 	 * Completions of long-running commands should not be able to  in nvme_complete_rq()
466 	 * req->deadline - req->timeout is the command submission time  in nvme_complete_rq()
469 	if (ctrl->kas &&  in nvme_complete_rq()
470 	    req->deadline - req->timeout >= ctrl->ka_last_check_time)  in nvme_complete_rq()
471 		ctrl->comp_seen = true;  in nvme_complete_rq()
485 		queue_work(nvme_wq, &ctrl->dhchap_auth_work);  in nvme_complete_rq()
504  * Called to unwind from ->queue_rq on a failed command submission so that the
511 	nvme_req(req)->status = NVME_SC_HOST_PATH_ERROR;  in nvme_host_path_error()
520 	dev_dbg_ratelimited(((struct nvme_ctrl *) data)->device,  in nvme_cancel_request()
521 				"Cancelling I/O %d", req->tag);  in nvme_cancel_request()
527 	nvme_req(req)->status = NVME_SC_HOST_ABORTED_CMD;  in nvme_cancel_request()
528 	nvme_req(req)->flags |= NVME_REQ_CANCELLED;  in nvme_cancel_request()
534 void nvme_cancel_tagset(struct nvme_ctrl *ctrl)  in nvme_cancel_tagset()  argument
536 	if (ctrl->tagset) {  in nvme_cancel_tagset()
537 		blk_mq_tagset_busy_iter(ctrl->tagset,  in nvme_cancel_tagset()
538 				nvme_cancel_request, ctrl);  in nvme_cancel_tagset()
539 		blk_mq_tagset_wait_completed_request(ctrl->tagset);  in nvme_cancel_tagset()
544 void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl)  in nvme_cancel_admin_tagset()  argument
546 	if (ctrl->admin_tagset) {  in nvme_cancel_admin_tagset()
547 		blk_mq_tagset_busy_iter(ctrl->admin_tagset,  in nvme_cancel_admin_tagset()
548 				nvme_cancel_request, ctrl);  in nvme_cancel_admin_tagset()
549 		blk_mq_tagset_wait_completed_request(ctrl->admin_tagset);  in nvme_cancel_admin_tagset()
554 bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,  in nvme_change_ctrl_state()  argument
561 	spin_lock_irqsave(&ctrl->lock, flags);  in nvme_change_ctrl_state()
563 	old_state = nvme_ctrl_state(ctrl);  in nvme_change_ctrl_state()
629 		WRITE_ONCE(ctrl->state, new_state);  in nvme_change_ctrl_state()
630 		wake_up_all(&ctrl->state_wq);  in nvme_change_ctrl_state()
633 	spin_unlock_irqrestore(&ctrl->lock, flags);  in nvme_change_ctrl_state()
639 			nvme_stop_failfast_work(ctrl);  in nvme_change_ctrl_state()
640 		nvme_kick_requeue_lists(ctrl);  in nvme_change_ctrl_state()
643 		nvme_start_failfast_work(ctrl);  in nvme_change_ctrl_state()
653 bool nvme_wait_reset(struct nvme_ctrl *ctrl)  in nvme_wait_reset()  argument
655 	wait_event(ctrl->state_wq,  in nvme_wait_reset()
656 		   nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING) ||  in nvme_wait_reset()
657 		   nvme_state_terminal(ctrl));  in nvme_wait_reset()
658 	return nvme_ctrl_state(ctrl) == NVME_CTRL_RESETTING;  in nvme_wait_reset()
668 	ida_free(&head->subsys->ns_ida, head->instance);  in nvme_free_ns_head()
669 	cleanup_srcu_struct(&head->srcu);  in nvme_free_ns_head()
670 	nvme_put_subsystem(head->subsys);  in nvme_free_ns_head()
676 	return kref_get_unless_zero(&head->ref);  in nvme_tryget_ns_head()
681 	kref_put(&head->ref, nvme_free_ns_head);  in nvme_put_ns_head()
688 	put_disk(ns->disk);  in nvme_free_ns()
689 	nvme_put_ns_head(ns->head);  in nvme_free_ns()
690 	nvme_put_ctrl(ns->ctrl);  in nvme_free_ns()
696 	return kref_get_unless_zero(&ns->kref);  in nvme_get_ns()
701 	kref_put(&ns->kref, nvme_free_ns);  in nvme_put_ns()
707 	nvme_req(req)->status = 0;  in nvme_clear_nvme_request()
708 	nvme_req(req)->retries = 0;  in nvme_clear_nvme_request()
709 	nvme_req(req)->flags = 0;  in nvme_clear_nvme_request()
710 	req->rq_flags |= RQF_DONTPREP;  in nvme_clear_nvme_request()
719 	if (req->q->queuedata) {  in nvme_init_request()
720 		struct nvme_ns *ns = req->q->disk->private_data;  in nvme_init_request()
722 		logging_enabled = ns->head->passthru_err_log_enabled;  in nvme_init_request()
723 		req->timeout = NVME_IO_TIMEOUT;  in nvme_init_request()
725 		logging_enabled = nr->ctrl->passthru_err_log_enabled;  in nvme_init_request()
726 		req->timeout = NVME_ADMIN_TIMEOUT;  in nvme_init_request()
730 		req->rq_flags |= RQF_QUIET;  in nvme_init_request()
733 	cmd->common.flags &= ~NVME_CMD_SGL_ALL;  in nvme_init_request()
735 	req->cmd_flags |= REQ_FAILFAST_DRIVER;  in nvme_init_request()
736 	if (req->mq_hctx->type == HCTX_TYPE_POLL)  in nvme_init_request()
737 		req->cmd_flags |= REQ_POLLED;  in nvme_init_request()
739 	memcpy(nr->cmd, cmd, sizeof(*cmd));  in nvme_init_request()
752 blk_status_t nvme_fail_nonready_command(struct nvme_ctrl *ctrl,  in nvme_fail_nonready_command()  argument
755 	enum nvme_ctrl_state state = nvme_ctrl_state(ctrl);  in nvme_fail_nonready_command()
760 	    !test_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags) &&  in nvme_fail_nonready_command()
761 	    !blk_noretry_request(rq) && !(rq->cmd_flags & REQ_NVME_MPATH))  in nvme_fail_nonready_command()
767 bool __nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq,  in __nvme_check_ready()  argument
780 	if (rq->q == ctrl->admin_q && (req->flags & NVME_REQ_USERCMD))  in __nvme_check_ready()
783 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in __nvme_check_ready()
791 			if (blk_rq_is_passthrough(rq) && nvme_is_fabrics(req->cmd) &&  in __nvme_check_ready()
792 			    (req->cmd->fabrics.fctype == nvme_fabrics_type_connect ||  in __nvme_check_ready()
793 			     req->cmd->fabrics.fctype == nvme_fabrics_type_auth_send ||  in __nvme_check_ready()
794 			     req->cmd->fabrics.fctype == nvme_fabrics_type_auth_receive))  in __nvme_check_ready()
812 	cmnd->common.opcode = nvme_cmd_flush;  in nvme_setup_flush()
813 	cmnd->common.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_flush()
837 		if (test_and_set_bit_lock(0, &ns->ctrl->discard_page_busy))  in nvme_setup_discard()
840 		range = page_address(ns->ctrl->discard_page);  in nvme_setup_discard()
843 	if (queue_max_discard_segments(req->q) == 1) {  in nvme_setup_discard()
844 		u64 slba = nvme_sect_to_lba(ns->head, blk_rq_pos(req));  in nvme_setup_discard()
845 		u32 nlb = blk_rq_sectors(req) >> (ns->head->lba_shift - 9);  in nvme_setup_discard()
853 			u64 slba = nvme_sect_to_lba(ns->head,  in nvme_setup_discard()
854 						    bio->bi_iter.bi_sector);  in nvme_setup_discard()
855 			u32 nlb = bio->bi_iter.bi_size >> ns->head->lba_shift;  in nvme_setup_discard()
867 		if (virt_to_page(range) == ns->ctrl->discard_page)  in nvme_setup_discard()
868 			clear_bit_unlock(0, &ns->ctrl->discard_page_busy);  in nvme_setup_discard()
875 	cmnd->dsm.opcode = nvme_cmd_dsm;  in nvme_setup_discard()
876 	cmnd->dsm.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_discard()
877 	cmnd->dsm.nr = cpu_to_le32(segments - 1);  in nvme_setup_discard()
878 	cmnd->dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);  in nvme_setup_discard()
880 	bvec_set_virt(&req->special_vec, range, alloc_size);  in nvme_setup_discard()
881 	req->rq_flags |= RQF_SPECIAL_PAYLOAD;  in nvme_setup_discard()
888 	cmnd->rw.lbat = cpu_to_le16(bio_integrity(req->bio)->app_tag);  in nvme_set_app_tag()
889 	cmnd->rw.lbatm = cpu_to_le16(0xffff);  in nvme_set_app_tag()
899 	switch (ns->head->guard_type) {  in nvme_set_ref_tag()
901 		cmnd->rw.reftag = cpu_to_le32(t10_pi_ref_tag(req));  in nvme_set_ref_tag()
908 		cmnd->rw.reftag = cpu_to_le32(lower);  in nvme_set_ref_tag()
909 		cmnd->rw.cdw3 = cpu_to_le32(upper);  in nvme_set_ref_tag()
921 	if (ns->ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES)  in nvme_setup_write_zeroes()
924 	cmnd->write_zeroes.opcode = nvme_cmd_write_zeroes;  in nvme_setup_write_zeroes()
925 	cmnd->write_zeroes.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_write_zeroes()
926 	cmnd->write_zeroes.slba =  in nvme_setup_write_zeroes()
927 		cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));  in nvme_setup_write_zeroes()
928 	cmnd->write_zeroes.length =  in nvme_setup_write_zeroes()
929 		cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);  in nvme_setup_write_zeroes()
931 	if (!(req->cmd_flags & REQ_NOUNMAP) &&  in nvme_setup_write_zeroes()
932 	    (ns->head->features & NVME_NS_DEAC))  in nvme_setup_write_zeroes()
933 		cmnd->write_zeroes.control |= cpu_to_le16(NVME_WZ_DEAC);  in nvme_setup_write_zeroes()
935 	if (nvme_ns_has_pi(ns->head)) {  in nvme_setup_write_zeroes()
936 		cmnd->write_zeroes.control |= cpu_to_le16(NVME_RW_PRINFO_PRACT);  in nvme_setup_write_zeroes()
938 		switch (ns->head->pi_type) {  in nvme_setup_write_zeroes()
952  * non-atomically. The request issuer should ensure that the write is within
957 	struct request_queue *q = req->q;  in nvme_valid_atomic_write()
964 		u64 mask = boundary_bytes - 1, imask = ~mask;  in nvme_valid_atomic_write()
966 		u64 end = start + blk_rq_bytes(req) - 1;  in nvme_valid_atomic_write()
986 	if (req->cmd_flags & REQ_FUA)  in nvme_setup_rw()
988 	if (req->cmd_flags & (REQ_FAILFAST_DEV | REQ_RAHEAD))  in nvme_setup_rw()
991 	if (req->cmd_flags & REQ_RAHEAD)  in nvme_setup_rw()
994 	if (req->cmd_flags & REQ_ATOMIC && !nvme_valid_atomic_write(req))  in nvme_setup_rw()
997 	cmnd->rw.opcode = op;  in nvme_setup_rw()
998 	cmnd->rw.flags = 0;  in nvme_setup_rw()
999 	cmnd->rw.nsid = cpu_to_le32(ns->head->ns_id);  in nvme_setup_rw()
1000 	cmnd->rw.cdw2 = 0;  in nvme_setup_rw()
1001 	cmnd->rw.cdw3 = 0;  in nvme_setup_rw()
1002 	cmnd->rw.metadata = 0;  in nvme_setup_rw()
1003 	cmnd->rw.slba =  in nvme_setup_rw()
1004 		cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));  in nvme_setup_rw()
1005 	cmnd->rw.length =  in nvme_setup_rw()
1006 		cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);  in nvme_setup_rw()
1007 	cmnd->rw.reftag = 0;  in nvme_setup_rw()
1008 	cmnd->rw.lbat = 0;  in nvme_setup_rw()
1009 	cmnd->rw.lbatm = 0;  in nvme_setup_rw()
1011 	if (ns->head->ms) {  in nvme_setup_rw()
1019 			if (WARN_ON_ONCE(!nvme_ns_has_pi(ns->head)))  in nvme_setup_rw()
1024 		if (bio_integrity_flagged(req->bio, BIP_CHECK_GUARD))  in nvme_setup_rw()
1026 		if (bio_integrity_flagged(req->bio, BIP_CHECK_REFTAG)) {  in nvme_setup_rw()
1032 		if (bio_integrity_flagged(req->bio, BIP_CHECK_APPTAG)) {  in nvme_setup_rw()
1038 	cmnd->rw.control = cpu_to_le16(control);  in nvme_setup_rw()
1039 	cmnd->rw.dsmgmt = cpu_to_le32(dsmgmt);  in nvme_setup_rw()
1045 	if (req->rq_flags & RQF_SPECIAL_PAYLOAD) {  in nvme_cleanup_cmd()
1046 		struct nvme_ctrl *ctrl = nvme_req(req)->ctrl;  in nvme_cleanup_cmd()  local
1048 		if (req->special_vec.bv_page == ctrl->discard_page)  in nvme_cleanup_cmd()
1049 			clear_bit_unlock(0, &ctrl->discard_page_busy);  in nvme_cleanup_cmd()
1051 			kfree(bvec_virt(&req->special_vec));  in nvme_cleanup_cmd()
1052 		req->rq_flags &= ~RQF_SPECIAL_PAYLOAD;  in nvme_cleanup_cmd()
1059 	struct nvme_command *cmd = nvme_req(req)->cmd;  in nvme_setup_cmd()
1062 	if (!(req->rq_flags & RQF_DONTPREP))  in nvme_setup_cmd()
1106 	cmd->common.command_id = nvme_cid(req);  in nvme_setup_cmd()
1123 	if (nvme_req(rq)->flags & NVME_REQ_CANCELLED)  in nvme_execute_rq()
1124 		return -EINTR;  in nvme_execute_rq()
1125 	if (nvme_req(rq)->status)  in nvme_execute_rq()
1126 		return nvme_req(rq)->status;  in nvme_execute_rq()
1151 						qid - 1);  in __nvme_submit_sync_cmd()
1157 		req->cmd_flags &= ~REQ_FAILFAST_DRIVER;  in __nvme_submit_sync_cmd()
1167 		*result = nvme_req(req)->result;  in __nvme_submit_sync_cmd()
1182 u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u8 opcode)  in nvme_command_effects()  argument
1187 		effects = le32_to_cpu(ns->head->effects->iocs[opcode]);  in nvme_command_effects()
1189 			dev_warn_once(ctrl->device,  in nvme_command_effects()
1200 		effects = le32_to_cpu(ctrl->effects->acs[opcode]);  in nvme_command_effects()
1211 u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u8 opcode)  in nvme_passthru_start()  argument
1213 	u32 effects = nvme_command_effects(ctrl, ns, opcode);  in nvme_passthru_start()
1220 		mutex_lock(&ctrl->scan_lock);  in nvme_passthru_start()
1221 		mutex_lock(&ctrl->subsys->lock);  in nvme_passthru_start()
1222 		nvme_mpath_start_freeze(ctrl->subsys);  in nvme_passthru_start()
1223 		nvme_mpath_wait_freeze(ctrl->subsys);  in nvme_passthru_start()
1224 		nvme_start_freeze(ctrl);  in nvme_passthru_start()
1225 		nvme_wait_freeze(ctrl);  in nvme_passthru_start()
1231 void nvme_passthru_end(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u32 effects,  in nvme_passthru_end()  argument
1235 		nvme_unfreeze(ctrl);  in nvme_passthru_end()
1236 		nvme_mpath_unfreeze(ctrl->subsys);  in nvme_passthru_end()
1237 		mutex_unlock(&ctrl->subsys->lock);  in nvme_passthru_end()
1238 		mutex_unlock(&ctrl->scan_lock);  in nvme_passthru_end()
1242 				      &ctrl->flags)) {  in nvme_passthru_end()
1243 			dev_info(ctrl->device,  in nvme_passthru_end()
1248 		nvme_queue_scan(ctrl);  in nvme_passthru_end()
1249 		flush_work(&ctrl->scan_work);  in nvme_passthru_end()
1254 	switch (cmd->common.opcode) {  in nvme_passthru_end()
1256 		switch (le32_to_cpu(cmd->common.cdw10) & 0xFF) {  in nvme_passthru_end()
1264 				nvme_update_keep_alive(ctrl, cmd);  in nvme_passthru_end()
1282 static unsigned long nvme_keep_alive_work_period(struct nvme_ctrl *ctrl)  in nvme_keep_alive_work_period()  argument
1284 	unsigned long delay = ctrl->kato * HZ / 2;  in nvme_keep_alive_work_period()
1292 	if (ctrl->ctratt & NVME_CTRL_ATTR_TBKAS)  in nvme_keep_alive_work_period()
1297 static void nvme_queue_keep_alive_work(struct nvme_ctrl *ctrl)  in nvme_queue_keep_alive_work()  argument
1300 	unsigned long delay = nvme_keep_alive_work_period(ctrl);  in nvme_queue_keep_alive_work()
1301 	unsigned long ka_next_check_tm = ctrl->ka_last_check_time + delay;  in nvme_queue_keep_alive_work()
1306 		delay = ka_next_check_tm - now;  in nvme_queue_keep_alive_work()
1308 	queue_delayed_work(nvme_wq, &ctrl->ka_work, delay);  in nvme_queue_keep_alive_work()
1314 	struct nvme_ctrl *ctrl = rq->end_io_data;  in nvme_keep_alive_end_io()  local
1315 	unsigned long rtt = jiffies - (rq->deadline - rq->timeout);  in nvme_keep_alive_end_io()
1316 	unsigned long delay = nvme_keep_alive_work_period(ctrl);  in nvme_keep_alive_end_io()
1317 	enum nvme_ctrl_state state = nvme_ctrl_state(ctrl);  in nvme_keep_alive_end_io()
1324 		delay -= rtt;  in nvme_keep_alive_end_io()
1326 		dev_warn(ctrl->device, "long keepalive RTT (%u ms)\n",  in nvme_keep_alive_end_io()
1334 		dev_err(ctrl->device,  in nvme_keep_alive_end_io()
1340 	ctrl->ka_last_check_time = jiffies;  in nvme_keep_alive_end_io()
1341 	ctrl->comp_seen = false;  in nvme_keep_alive_end_io()
1343 		queue_delayed_work(nvme_wq, &ctrl->ka_work, delay);  in nvme_keep_alive_end_io()
1349 	struct nvme_ctrl *ctrl = container_of(to_delayed_work(work),  in nvme_keep_alive_work()  local
1351 	bool comp_seen = ctrl->comp_seen;  in nvme_keep_alive_work()
1354 	ctrl->ka_last_check_time = jiffies;  in nvme_keep_alive_work()
1356 	if ((ctrl->ctratt & NVME_CTRL_ATTR_TBKAS) && comp_seen) {  in nvme_keep_alive_work()
1357 		dev_dbg(ctrl->device,  in nvme_keep_alive_work()
1358 			"reschedule traffic based keep-alive timer\n");  in nvme_keep_alive_work()
1359 		ctrl->comp_seen = false;  in nvme_keep_alive_work()
1360 		nvme_queue_keep_alive_work(ctrl);  in nvme_keep_alive_work()
1364 	rq = blk_mq_alloc_request(ctrl->admin_q, nvme_req_op(&ctrl->ka_cmd),  in nvme_keep_alive_work()
1368 		dev_err(ctrl->device, "keep-alive failed: %ld\n", PTR_ERR(rq));  in nvme_keep_alive_work()
1369 		nvme_reset_ctrl(ctrl);  in nvme_keep_alive_work()
1372 	nvme_init_request(rq, &ctrl->ka_cmd);  in nvme_keep_alive_work()
1374 	rq->timeout = ctrl->kato * HZ;  in nvme_keep_alive_work()
1375 	rq->end_io = nvme_keep_alive_end_io;  in nvme_keep_alive_work()
1376 	rq->end_io_data = ctrl;  in nvme_keep_alive_work()
1380 static void nvme_start_keep_alive(struct nvme_ctrl *ctrl)  in nvme_start_keep_alive()  argument
1382 	if (unlikely(ctrl->kato == 0))  in nvme_start_keep_alive()
1385 	nvme_queue_keep_alive_work(ctrl);  in nvme_start_keep_alive()
1388 void nvme_stop_keep_alive(struct nvme_ctrl *ctrl)  in nvme_stop_keep_alive()  argument
1390 	if (unlikely(ctrl->kato == 0))  in nvme_stop_keep_alive()
1393 	cancel_delayed_work_sync(&ctrl->ka_work);  in nvme_stop_keep_alive()
1397 static void nvme_update_keep_alive(struct nvme_ctrl *ctrl,  in nvme_update_keep_alive()  argument
1401 		DIV_ROUND_UP(le32_to_cpu(cmd->common.cdw11), 1000);  in nvme_update_keep_alive()
1403 	dev_info(ctrl->device,  in nvme_update_keep_alive()
1405 		 ctrl->kato * 1000 / 2, new_kato * 1000 / 2);  in nvme_update_keep_alive()
1407 	nvme_stop_keep_alive(ctrl);  in nvme_update_keep_alive()
1408 	ctrl->kato = new_kato;  in nvme_update_keep_alive()
1409 	nvme_start_keep_alive(ctrl);  in nvme_update_keep_alive()
1412 static bool nvme_id_cns_ok(struct nvme_ctrl *ctrl, u8 cns)  in nvme_id_cns_ok()  argument
1417 	if (ctrl->vs >= NVME_VS(1, 2, 0))  in nvme_id_cns_ok()
1428 	if (ctrl->vs >= NVME_VS(1, 1, 0) &&  in nvme_id_cns_ok()
1429 	    !(ctrl->quirks & NVME_QUIRK_IDENTIFY_CNS))  in nvme_id_cns_ok()
1443 	/* gcc-4.4.4 (at least) has issues with initializers and anon unions */  in nvme_identify_ctrl()
1449 		return -ENOMEM;  in nvme_identify_ctrl()
1451 	error = nvme_submit_sync_cmd(dev->admin_q, &c, *id,  in nvme_identify_ctrl()
1460 static int nvme_process_ns_desc(struct nvme_ctrl *ctrl, struct nvme_ns_ids *ids,  in nvme_process_ns_desc()  argument
1463 	const char *warn_str = "ctrl returned bogus length:";  in nvme_process_ns_desc()
1466 	switch (cur->nidt) {  in nvme_process_ns_desc()
1468 		if (cur->nidl != NVME_NIDT_EUI64_LEN) {  in nvme_process_ns_desc()
1469 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_EUI64\n",  in nvme_process_ns_desc()
1470 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1471 			return -1;  in nvme_process_ns_desc()
1473 		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)  in nvme_process_ns_desc()
1475 		memcpy(ids->eui64, data + sizeof(*cur), NVME_NIDT_EUI64_LEN);  in nvme_process_ns_desc()
1478 		if (cur->nidl != NVME_NIDT_NGUID_LEN) {  in nvme_process_ns_desc()
1479 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_NGUID\n",  in nvme_process_ns_desc()
1480 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1481 			return -1;  in nvme_process_ns_desc()
1483 		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)  in nvme_process_ns_desc()
1485 		memcpy(ids->nguid, data + sizeof(*cur), NVME_NIDT_NGUID_LEN);  in nvme_process_ns_desc()
1488 		if (cur->nidl != NVME_NIDT_UUID_LEN) {  in nvme_process_ns_desc()
1489 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_UUID\n",  in nvme_process_ns_desc()
1490 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1491 			return -1;  in nvme_process_ns_desc()
1493 		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)  in nvme_process_ns_desc()
1495 		uuid_copy(&ids->uuid, data + sizeof(*cur));  in nvme_process_ns_desc()
1498 		if (cur->nidl != NVME_NIDT_CSI_LEN) {  in nvme_process_ns_desc()
1499 			dev_warn(ctrl->device, "%s %d for NVME_NIDT_CSI\n",  in nvme_process_ns_desc()
1500 				 warn_str, cur->nidl);  in nvme_process_ns_desc()
1501 			return -1;  in nvme_process_ns_desc()
1503 		memcpy(&ids->csi, data + sizeof(*cur), NVME_NIDT_CSI_LEN);  in nvme_process_ns_desc()
1508 		return cur->nidl;  in nvme_process_ns_desc()
1512 static int nvme_identify_ns_descs(struct nvme_ctrl *ctrl,  in nvme_identify_ns_descs()  argument
1520 	if (ctrl->vs < NVME_VS(1, 3, 0) && !nvme_multi_css(ctrl))  in nvme_identify_ns_descs()
1522 	if (ctrl->quirks & NVME_QUIRK_NO_NS_DESC_LIST)  in nvme_identify_ns_descs()
1526 	c.identify.nsid = cpu_to_le32(info->nsid);  in nvme_identify_ns_descs()
1531 		return -ENOMEM;  in nvme_identify_ns_descs()
1533 	status = nvme_submit_sync_cmd(ctrl->admin_q, &c, data,  in nvme_identify_ns_descs()
1536 		dev_warn(ctrl->device,  in nvme_identify_ns_descs()
1538 			info->nsid, status);  in nvme_identify_ns_descs()
1545 		if (cur->nidl == 0)  in nvme_identify_ns_descs()
1548 		len = nvme_process_ns_desc(ctrl, &info->ids, cur, &csi_seen);  in nvme_identify_ns_descs()
1555 	if (nvme_multi_css(ctrl) && !csi_seen) {  in nvme_identify_ns_descs()
1556 		dev_warn(ctrl->device, "Command set not reported for nsid:%d\n",  in nvme_identify_ns_descs()
1557 			 info->nsid);  in nvme_identify_ns_descs()
1558 		status = -EINVAL;  in nvme_identify_ns_descs()
1566 int nvme_identify_ns(struct nvme_ctrl *ctrl, unsigned nsid,  in nvme_identify_ns()  argument
1572 	/* gcc-4.4.4 (at least) has issues with initializers and anon unions */  in nvme_identify_ns()
1579 		return -ENOMEM;  in nvme_identify_ns()
1581 	error = nvme_submit_sync_cmd(ctrl->admin_q, &c, *id, sizeof(**id));  in nvme_identify_ns()
1583 		dev_warn(ctrl->device, "Identify namespace failed (%d)\n", error);  in nvme_identify_ns()
1590 static int nvme_ns_info_from_identify(struct nvme_ctrl *ctrl,  in nvme_ns_info_from_identify()  argument
1593 	struct nvme_ns_ids *ids = &info->ids;  in nvme_ns_info_from_identify()  local
1597 	ret = nvme_identify_ns(ctrl, info->nsid, &id);  in nvme_ns_info_from_identify()
1601 	if (id->ncap == 0) {  in nvme_ns_info_from_identify()
1603 		info->is_removed = true;  in nvme_ns_info_from_identify()
1604 		ret = -ENODEV;  in nvme_ns_info_from_identify()
1608 	info->anagrpid = id->anagrpid;  in nvme_ns_info_from_identify()
1609 	info->is_shared = id->nmic & NVME_NS_NMIC_SHARED;  in nvme_ns_info_from_identify()
1610 	info->is_readonly = id->nsattr & NVME_NS_ATTR_RO;  in nvme_ns_info_from_identify()
1611 	info->is_ready = true;  in nvme_ns_info_from_identify()
1612 	if (ctrl->quirks & NVME_QUIRK_BOGUS_NID) {  in nvme_ns_info_from_identify()
1613 		dev_info(ctrl->device,  in nvme_ns_info_from_identify()
1616 		if (ctrl->vs >= NVME_VS(1, 1, 0) &&  in nvme_ns_info_from_identify()
1617 		    !memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))  in nvme_ns_info_from_identify()
1618 			memcpy(ids->eui64, id->eui64, sizeof(ids->eui64));  in nvme_ns_info_from_identify()
1619 		if (ctrl->vs >= NVME_VS(1, 2, 0) &&  in nvme_ns_info_from_identify()
1620 		    !memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))  in nvme_ns_info_from_identify()
1621 			memcpy(ids->nguid, id->nguid, sizeof(ids->nguid));  in nvme_ns_info_from_identify()
1629 static int nvme_ns_info_from_id_cs_indep(struct nvme_ctrl *ctrl,  in nvme_ns_info_from_id_cs_indep()  argument
1635 		.identify.nsid		= cpu_to_le32(info->nsid),  in nvme_ns_info_from_id_cs_indep()
1642 		return -ENOMEM;  in nvme_ns_info_from_id_cs_indep()
1644 	ret = nvme_submit_sync_cmd(ctrl->admin_q, &c, id, sizeof(*id));  in nvme_ns_info_from_id_cs_indep()
1646 		info->anagrpid = id->anagrpid;  in nvme_ns_info_from_id_cs_indep()
1647 		info->is_shared = id->nmic & NVME_NS_NMIC_SHARED;  in nvme_ns_info_from_id_cs_indep()
1648 		info->is_readonly = id->nsattr & NVME_NS_ATTR_RO;  in nvme_ns_info_from_id_cs_indep()
1649 		info->is_ready = id->nstat & NVME_NSTAT_NRDY;  in nvme_ns_info_from_id_cs_indep()
1650 		info->is_rotational = id->nsfeat & NVME_NS_ROTATIONAL;  in nvme_ns_info_from_id_cs_indep()
1651 		info->no_vwc = id->nsfeat & NVME_NS_VWC_NOT_PRESENT;  in nvme_ns_info_from_id_cs_indep()
1668 	ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &res,  in nvme_features()
1693 int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count)  in nvme_set_queue_count()  argument
1695 	u32 q_count = (*count - 1) | ((*count - 1) << 16);  in nvme_set_queue_count()
1699 	status = nvme_set_features(ctrl, NVME_FEAT_NUM_QUEUES, q_count, NULL, 0,  in nvme_set_queue_count()
1716 		dev_err(ctrl->device, "Could not set queue count (%d)\n", status);  in nvme_set_queue_count()
1731 static void nvme_enable_aen(struct nvme_ctrl *ctrl)  in nvme_enable_aen()  argument
1733 	u32 result, supported_aens = ctrl->oaes & NVME_AEN_SUPPORTED;  in nvme_enable_aen()
1739 	status = nvme_set_features(ctrl, NVME_FEAT_ASYNC_EVENT, supported_aens,  in nvme_enable_aen()
1742 		dev_warn(ctrl->device, "Failed to configure AEN (cfg %x)\n",  in nvme_enable_aen()
1745 	queue_work(nvme_wq, &ctrl->async_event_work);  in nvme_enable_aen()
1752 	if (WARN_ON_ONCE(nvme_ns_head_multipath(ns->head)))  in nvme_ns_open()
1756 	if (!try_module_get(ns->ctrl->ops->module))  in nvme_ns_open()
1764 	return -ENXIO;  in nvme_ns_open()
1770 	module_put(ns->ctrl->ops->module);  in nvme_ns_release()
1776 	return nvme_ns_open(disk->private_data);  in nvme_open()
1781 	nvme_ns_release(disk->private_data);  in nvme_release()
1787 	geo->heads = 1 << 6;  in nvme_getgeo()
1788 	geo->sectors = 1 << 5;  in nvme_getgeo()
1789 	geo->cylinders = get_capacity(bdev->bd_disk) >> 11;  in nvme_getgeo()
1796 	struct blk_integrity *bi = &lim->integrity;  in nvme_init_integrity()
1800 	if (!head->ms)  in nvme_init_integrity()
1808 	    !(head->features & NVME_NS_METADATA_SUPPORTED))  in nvme_init_integrity()
1811 	switch (head->pi_type) {  in nvme_init_integrity()
1813 		switch (head->guard_type) {  in nvme_init_integrity()
1815 			bi->csum_type = BLK_INTEGRITY_CSUM_CRC;  in nvme_init_integrity()
1816 			bi->tag_size = sizeof(u16) + sizeof(u32);  in nvme_init_integrity()
1817 			bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE;  in nvme_init_integrity()
1820 			bi->csum_type = BLK_INTEGRITY_CSUM_CRC64;  in nvme_init_integrity()
1821 			bi->tag_size = sizeof(u16) + 6;  in nvme_init_integrity()
1822 			bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE;  in nvme_init_integrity()
1830 		switch (head->guard_type) {  in nvme_init_integrity()
1832 			bi->csum_type = BLK_INTEGRITY_CSUM_CRC;  in nvme_init_integrity()
1833 			bi->tag_size = sizeof(u16);  in nvme_init_integrity()
1834 			bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE |  in nvme_init_integrity()
1838 			bi->csum_type = BLK_INTEGRITY_CSUM_CRC64;  in nvme_init_integrity()
1839 			bi->tag_size = sizeof(u16);  in nvme_init_integrity()
1840 			bi->flags |= BLK_INTEGRITY_DEVICE_CAPABLE |  in nvme_init_integrity()
1851 	bi->tuple_size = head->ms;  in nvme_init_integrity()
1852 	bi->pi_offset = info->pi_offset;  in nvme_init_integrity()
1858 	struct nvme_ctrl *ctrl = ns->ctrl;  in nvme_config_discard()  local
1860 	if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(ns->head, UINT_MAX))  in nvme_config_discard()
1861 		lim->max_hw_discard_sectors =  in nvme_config_discard()
1862 			nvme_lba_to_sect(ns->head, ctrl->dmrsl);  in nvme_config_discard()
1863 	else if (ctrl->oncs & NVME_CTRL_ONCS_DSM)  in nvme_config_discard()
1864 		lim->max_hw_discard_sectors = UINT_MAX;  in nvme_config_discard()
1866 		lim->max_hw_discard_sectors = 0;  in nvme_config_discard()
1868 	lim->discard_granularity = lim->logical_block_size;  in nvme_config_discard()
1870 	if (ctrl->dmrl)  in nvme_config_discard()
1871 		lim->max_discard_segments = ctrl->dmrl;  in nvme_config_discard()
1873 		lim->max_discard_segments = NVME_DSM_MAX_RANGES;  in nvme_config_discard()
1878 	return uuid_equal(&a->uuid, &b->uuid) &&  in nvme_ns_ids_equal()
1879 		memcmp(&a->nguid, &b->nguid, sizeof(a->nguid)) == 0 &&  in nvme_ns_ids_equal()
1880 		memcmp(&a->eui64, &b->eui64, sizeof(a->eui64)) == 0 &&  in nvme_ns_ids_equal()
1881 		a->csi == b->csi;  in nvme_ns_ids_equal()
1884 static int nvme_identify_ns_nvm(struct nvme_ctrl *ctrl, unsigned int nsid,  in nvme_identify_ns_nvm()  argument
1898 		return -ENOMEM;  in nvme_identify_ns_nvm()
1900 	ret = nvme_submit_sync_cmd(ctrl->admin_q, &c, nvm, sizeof(*nvm));  in nvme_identify_ns_nvm()
1911 	u32 elbaf = le32_to_cpu(nvm->elbaf[nvme_lbaf_index(id->flbas)]);  in nvme_configure_pi_elbas()
1919 	if ((nvm->pic & NVME_ID_NS_NVM_QPIFS) &&  in nvme_configure_pi_elbas()
1923 	head->guard_type = guard_type;  in nvme_configure_pi_elbas()
1924 	switch (head->guard_type) {  in nvme_configure_pi_elbas()
1926 		head->pi_size = sizeof(struct crc64_pi_tuple);  in nvme_configure_pi_elbas()
1929 		head->pi_size = sizeof(struct t10_pi_tuple);  in nvme_configure_pi_elbas()
1936 static void nvme_configure_metadata(struct nvme_ctrl *ctrl,  in nvme_configure_metadata()  argument
1940 	head->features &= ~(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);  in nvme_configure_metadata()
1941 	head->pi_type = 0;  in nvme_configure_metadata()
1942 	head->pi_size = 0;  in nvme_configure_metadata()
1943 	head->ms = le16_to_cpu(id->lbaf[nvme_lbaf_index(id->flbas)].ms);  in nvme_configure_metadata()
1944 	if (!head->ms || !(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))  in nvme_configure_metadata()
1947 	if (nvm && (ctrl->ctratt & NVME_CTRL_ATTR_ELBAS)) {  in nvme_configure_metadata()
1950 		head->pi_size = sizeof(struct t10_pi_tuple);  in nvme_configure_metadata()
1951 		head->guard_type = NVME_NVM_NS_16B_GUARD;  in nvme_configure_metadata()
1954 	if (head->pi_size && head->ms >= head->pi_size)  in nvme_configure_metadata()
1955 		head->pi_type = id->dps & NVME_NS_DPS_PI_MASK;  in nvme_configure_metadata()
1956 	if (!(id->dps & NVME_NS_DPS_PI_FIRST)) {  in nvme_configure_metadata()
1958 			head->pi_type = 0;  in nvme_configure_metadata()
1960 			info->pi_offset = head->ms - head->pi_size;  in nvme_configure_metadata()
1963 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_configure_metadata()
1969 		if (WARN_ON_ONCE(!(id->flbas & NVME_NS_FLBAS_META_EXT)))  in nvme_configure_metadata()
1972 		head->features |= NVME_NS_EXT_LBAS;  in nvme_configure_metadata()
1983 		if (ctrl->max_integrity_segments && nvme_ns_has_pi(head))  in nvme_configure_metadata()
1984 			head->features |= NVME_NS_METADATA_SUPPORTED;  in nvme_configure_metadata()
1992 		if (id->flbas & NVME_NS_FLBAS_META_EXT)  in nvme_configure_metadata()
1993 			head->features |= NVME_NS_EXT_LBAS;  in nvme_configure_metadata()
1995 			head->features |= NVME_NS_METADATA_SUPPORTED;  in nvme_configure_metadata()
2006 	if (id->nsfeat & NVME_NS_FEAT_ATOMICS && id->nawupf) {  in nvme_update_atomic_write_disk_info()
2007 		if (le16_to_cpu(id->nabspf))  in nvme_update_atomic_write_disk_info()
2008 			boundary = (le16_to_cpu(id->nabspf) + 1) * bs;  in nvme_update_atomic_write_disk_info()
2010 	lim->atomic_write_hw_max = atomic_bs;  in nvme_update_atomic_write_disk_info()
2011 	lim->atomic_write_hw_boundary = boundary;  in nvme_update_atomic_write_disk_info()
2012 	lim->atomic_write_hw_unit_min = bs;  in nvme_update_atomic_write_disk_info()
2013 	lim->atomic_write_hw_unit_max = rounddown_pow_of_two(atomic_bs);  in nvme_update_atomic_write_disk_info()
2014 	lim->features |= BLK_FEAT_ATOMIC_WRITES;  in nvme_update_atomic_write_disk_info()
2017 static u32 nvme_max_drv_segments(struct nvme_ctrl *ctrl)  in nvme_max_drv_segments()  argument
2019 	return ctrl->max_hw_sectors / (NVME_CTRL_PAGE_SIZE >> SECTOR_SHIFT) + 1;  in nvme_max_drv_segments()
2022 static void nvme_set_ctrl_limits(struct nvme_ctrl *ctrl,  in nvme_set_ctrl_limits()  argument
2025 	lim->max_hw_sectors = ctrl->max_hw_sectors;  in nvme_set_ctrl_limits()
2026 	lim->max_segments = min_t(u32, USHRT_MAX,  in nvme_set_ctrl_limits()
2027 		min_not_zero(nvme_max_drv_segments(ctrl), ctrl->max_segments));  in nvme_set_ctrl_limits()
2028 	lim->max_integrity_segments = ctrl->max_integrity_segments;  in nvme_set_ctrl_limits()
2029 	lim->virt_boundary_mask = NVME_CTRL_PAGE_SIZE - 1;  in nvme_set_ctrl_limits()
2030 	lim->max_segment_size = UINT_MAX;  in nvme_set_ctrl_limits()
2031 	lim->dma_alignment = 3;  in nvme_set_ctrl_limits()
2037 	struct nvme_ns_head *head = ns->head;  in nvme_update_disk_info()
2038 	u32 bs = 1U << head->lba_shift;  in nvme_update_disk_info()
2053 	if (id->nabo == 0) {  in nvme_update_disk_info()
2059 		if (id->nsfeat & NVME_NS_FEAT_ATOMICS && id->nawupf)  in nvme_update_disk_info()
2060 			atomic_bs = (1 + le16_to_cpu(id->nawupf)) * bs;  in nvme_update_disk_info()
2062 			atomic_bs = (1 + ns->ctrl->subsys->awupf) * bs;  in nvme_update_disk_info()
2067 	if (id->nsfeat & NVME_NS_FEAT_IO_OPT) {  in nvme_update_disk_info()
2069 		phys_bs = bs * (1 + le16_to_cpu(id->npwg));  in nvme_update_disk_info()
2071 		if (id->nows)  in nvme_update_disk_info()
2072 			io_opt = bs * (1 + le16_to_cpu(id->nows));  in nvme_update_disk_info()
2080 	lim->logical_block_size = bs;  in nvme_update_disk_info()
2081 	lim->physical_block_size = min(phys_bs, atomic_bs);  in nvme_update_disk_info()
2082 	lim->io_min = phys_bs;  in nvme_update_disk_info()
2083 	lim->io_opt = io_opt;  in nvme_update_disk_info()
2084 	if ((ns->ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES) &&  in nvme_update_disk_info()
2085 	    (ns->ctrl->oncs & NVME_CTRL_ONCS_DSM))  in nvme_update_disk_info()
2086 		lim->max_write_zeroes_sectors = UINT_MAX;  in nvme_update_disk_info()
2088 		lim->max_write_zeroes_sectors = ns->ctrl->max_zeroes_sectors;  in nvme_update_disk_info()
2094 	return info->is_readonly || test_bit(NVME_NS_FORCE_RO, &ns->flags);  in nvme_ns_is_readonly()
2106 	struct nvme_ctrl *ctrl = ns->ctrl;  in nvme_set_chunk_sectors()  local
2109 	if ((ctrl->quirks & NVME_QUIRK_STRIPE_SIZE) &&  in nvme_set_chunk_sectors()
2110 	    is_power_of_2(ctrl->max_hw_sectors))  in nvme_set_chunk_sectors()
2111 		iob = ctrl->max_hw_sectors;  in nvme_set_chunk_sectors()
2113 		iob = nvme_lba_to_sect(ns->head, le16_to_cpu(id->noiob));  in nvme_set_chunk_sectors()
2119 		if (nvme_first_scan(ns->disk))  in nvme_set_chunk_sectors()
2121 				ns->disk->disk_name, iob);  in nvme_set_chunk_sectors()
2125 	if (blk_queue_is_zoned(ns->disk->queue)) {  in nvme_set_chunk_sectors()
2126 		if (nvme_first_scan(ns->disk))  in nvme_set_chunk_sectors()
2128 				ns->disk->disk_name);  in nvme_set_chunk_sectors()
2132 	lim->chunk_sectors = iob;  in nvme_set_chunk_sectors()
2142 	lim = queue_limits_start_update(ns->disk->queue);  in nvme_update_ns_info_generic()
2143 	nvme_set_ctrl_limits(ns->ctrl, &lim);  in nvme_update_ns_info_generic()
2145 	memflags = blk_mq_freeze_queue(ns->disk->queue);  in nvme_update_ns_info_generic()
2146 	ret = queue_limits_commit_update(ns->disk->queue, &lim);  in nvme_update_ns_info_generic()
2147 	set_disk_ro(ns->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info_generic()
2148 	blk_mq_unfreeze_queue(ns->disk->queue, memflags);  in nvme_update_ns_info_generic()
2150 	/* Hide the block-interface for these devices */  in nvme_update_ns_info_generic()
2152 		ret = -ENODEV;  in nvme_update_ns_info_generic()
2168 	ret = nvme_identify_ns(ns->ctrl, info->nsid, &id);  in nvme_update_ns_info_block()
2172 	if (id->ncap == 0) {  in nvme_update_ns_info_block()
2174 		info->is_removed = true;  in nvme_update_ns_info_block()
2175 		ret = -ENXIO;  in nvme_update_ns_info_block()
2178 	lbaf = nvme_lbaf_index(id->flbas);  in nvme_update_ns_info_block()
2180 	if (ns->ctrl->ctratt & NVME_CTRL_ATTR_ELBAS) {  in nvme_update_ns_info_block()
2181 		ret = nvme_identify_ns_nvm(ns->ctrl, info->nsid, &nvm);  in nvme_update_ns_info_block()
2187 	    ns->head->ids.csi == NVME_CSI_ZNS) {  in nvme_update_ns_info_block()
2193 	lim = queue_limits_start_update(ns->disk->queue);  in nvme_update_ns_info_block()
2195 	memflags = blk_mq_freeze_queue(ns->disk->queue);  in nvme_update_ns_info_block()
2196 	ns->head->lba_shift = id->lbaf[lbaf].ds;  in nvme_update_ns_info_block()
2197 	ns->head->nuse = le64_to_cpu(id->nuse);  in nvme_update_ns_info_block()
2198 	capacity = nvme_lba_to_sect(ns->head, le64_to_cpu(id->nsze));  in nvme_update_ns_info_block()
2199 	nvme_set_ctrl_limits(ns->ctrl, &lim);  in nvme_update_ns_info_block()
2200 	nvme_configure_metadata(ns->ctrl, ns->head, id, nvm, info);  in nvme_update_ns_info_block()
2206 	    ns->head->ids.csi == NVME_CSI_ZNS)  in nvme_update_ns_info_block()
2209 	if ((ns->ctrl->vwc & NVME_CTRL_VWC_PRESENT) && !info->no_vwc)  in nvme_update_ns_info_block()
2214 	if (info->is_rotational)  in nvme_update_ns_info_block()
2218 	 * Register a metadata profile for PI, or the plain non-integrity NVMe  in nvme_update_ns_info_block()
2223 	if (!nvme_init_integrity(ns->head, &lim, info))  in nvme_update_ns_info_block()
2226 	ret = queue_limits_commit_update(ns->disk->queue, &lim);  in nvme_update_ns_info_block()
2228 		blk_mq_unfreeze_queue(ns->disk->queue, memflags);  in nvme_update_ns_info_block()
2232 	set_capacity_and_notify(ns->disk, capacity);  in nvme_update_ns_info_block()
2237 	 * require that, it must be a no-op if reads from deallocated data  in nvme_update_ns_info_block()
2240 	if ((id->dlfeat & 0x7) == 0x1 && (id->dlfeat & (1 << 3)))  in nvme_update_ns_info_block()
2241 		ns->head->features |= NVME_NS_DEAC;  in nvme_update_ns_info_block()
2242 	set_disk_ro(ns->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info_block()
2243 	set_bit(NVME_NS_READY, &ns->flags);  in nvme_update_ns_info_block()
2244 	blk_mq_unfreeze_queue(ns->disk->queue, memflags);  in nvme_update_ns_info_block()
2246 	if (blk_queue_is_zoned(ns->queue)) {  in nvme_update_ns_info_block()
2247 		ret = blk_revalidate_disk_zones(ns->disk);  in nvme_update_ns_info_block()
2248 		if (ret && !nvme_first_scan(ns->disk))  in nvme_update_ns_info_block()
2264 	switch (info->ids.csi) {  in nvme_update_ns_info()
2267 			dev_info(ns->ctrl->device,  in nvme_update_ns_info()
2269 				info->nsid);  in nvme_update_ns_info()
2279 		dev_info(ns->ctrl->device,  in nvme_update_ns_info()
2281 			info->nsid, info->ids.csi);  in nvme_update_ns_info()
2290 	if (ret == -ENODEV) {  in nvme_update_ns_info()
2291 		ns->disk->flags |= GENHD_FL_HIDDEN;  in nvme_update_ns_info()
2292 		set_bit(NVME_NS_READY, &ns->flags);  in nvme_update_ns_info()
2297 	if (!ret && nvme_ns_head_multipath(ns->head)) {  in nvme_update_ns_info()
2298 		struct queue_limits *ns_lim = &ns->disk->queue->limits;  in nvme_update_ns_info()
2302 		lim = queue_limits_start_update(ns->head->disk->queue);  in nvme_update_ns_info()
2303 		memflags = blk_mq_freeze_queue(ns->head->disk->queue);  in nvme_update_ns_info()
2319 		lim.logical_block_size = ns_lim->logical_block_size;  in nvme_update_ns_info()
2320 		lim.physical_block_size = ns_lim->physical_block_size;  in nvme_update_ns_info()
2321 		lim.io_min = ns_lim->io_min;  in nvme_update_ns_info()
2322 		lim.io_opt = ns_lim->io_opt;  in nvme_update_ns_info()
2323 		queue_limits_stack_bdev(&lim, ns->disk->part0, 0,  in nvme_update_ns_info()
2324 					ns->head->disk->disk_name);  in nvme_update_ns_info()
2326 			ns->head->disk->flags |= GENHD_FL_HIDDEN;  in nvme_update_ns_info()
2328 			nvme_init_integrity(ns->head, &lim, info);  in nvme_update_ns_info()
2329 		ret = queue_limits_commit_update(ns->head->disk->queue, &lim);  in nvme_update_ns_info()
2331 		set_capacity_and_notify(ns->head->disk, get_capacity(ns->disk));  in nvme_update_ns_info()
2332 		set_disk_ro(ns->head->disk, nvme_ns_is_readonly(ns, info));  in nvme_update_ns_info()
2335 		blk_mq_unfreeze_queue(ns->head->disk->queue, memflags);  in nvme_update_ns_info()
2344 	struct nvme_ns_ids *ids = &ns->head->ids;  in nvme_ns_get_unique_id()  local
2347 		return -EINVAL;  in nvme_ns_get_unique_id()
2349 	if (memchr_inv(ids->nguid, 0, sizeof(ids->nguid))) {  in nvme_ns_get_unique_id()
2350 		memcpy(id, &ids->nguid, sizeof(ids->nguid));  in nvme_ns_get_unique_id()
2351 		return sizeof(ids->nguid);  in nvme_ns_get_unique_id()
2353 	if (memchr_inv(ids->eui64, 0, sizeof(ids->eui64))) {  in nvme_ns_get_unique_id()
2354 		memcpy(id, &ids->eui64, sizeof(ids->eui64));  in nvme_ns_get_unique_id()
2355 		return sizeof(ids->eui64);  in nvme_ns_get_unique_id()
2358 	return -EINVAL;  in nvme_ns_get_unique_id()
2364 	return nvme_ns_get_unique_id(disk->private_data, id, type);  in nvme_get_unique_id()
2371 	struct nvme_ctrl *ctrl = data;  in nvme_sec_submit()  local
2382 	return __nvme_submit_sync_cmd(ctrl->admin_q, &cmd, NULL, buffer, len,  in nvme_sec_submit()
2386 static void nvme_configure_opal(struct nvme_ctrl *ctrl, bool was_suspended)  in nvme_configure_opal()  argument
2388 	if (ctrl->oacs & NVME_CTRL_OACS_SEC_SUPP) {  in nvme_configure_opal()
2389 		if (!ctrl->opal_dev)  in nvme_configure_opal()
2390 			ctrl->opal_dev = init_opal_dev(ctrl, &nvme_sec_submit);  in nvme_configure_opal()
2392 			opal_unlock_from_suspend(ctrl->opal_dev);  in nvme_configure_opal()
2394 		free_opal_dev(ctrl->opal_dev);  in nvme_configure_opal()
2395 		ctrl->opal_dev = NULL;  in nvme_configure_opal()
2399 static void nvme_configure_opal(struct nvme_ctrl *ctrl, bool was_suspended)  in nvme_configure_opal()  argument
2408 	return nvme_ns_report_zones(disk->private_data, sector, nr_zones, cb,  in nvme_report_zones()
2427 static int nvme_wait_ready(struct nvme_ctrl *ctrl, u32 mask, u32 val,  in nvme_wait_ready()  argument
2434 	while ((ret = ctrl->ops->reg_read32(ctrl, NVME_REG_CSTS, &csts)) == 0) {  in nvme_wait_ready()
2436 			return -ENODEV;  in nvme_wait_ready()
2442 			return -EINTR;  in nvme_wait_ready()
2444 			dev_err(ctrl->device,  in nvme_wait_ready()
2447 			return -ENODEV;  in nvme_wait_ready()
2454 int nvme_disable_ctrl(struct nvme_ctrl *ctrl, bool shutdown)  in nvme_disable_ctrl()  argument
2458 	ctrl->ctrl_config &= ~NVME_CC_SHN_MASK;  in nvme_disable_ctrl()
2460 		ctrl->ctrl_config |= NVME_CC_SHN_NORMAL;  in nvme_disable_ctrl()
2462 		ctrl->ctrl_config &= ~NVME_CC_ENABLE;  in nvme_disable_ctrl()
2464 	ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);  in nvme_disable_ctrl()
2469 		return nvme_wait_ready(ctrl, NVME_CSTS_SHST_MASK,  in nvme_disable_ctrl()
2471 				       ctrl->shutdown_timeout, "shutdown");  in nvme_disable_ctrl()
2473 	if (ctrl->quirks & NVME_QUIRK_DELAY_BEFORE_CHK_RDY)  in nvme_disable_ctrl()
2475 	return nvme_wait_ready(ctrl, NVME_CSTS_RDY, 0,  in nvme_disable_ctrl()
2476 			       (NVME_CAP_TIMEOUT(ctrl->cap) + 1) / 2, "reset");  in nvme_disable_ctrl()
2480 int nvme_enable_ctrl(struct nvme_ctrl *ctrl)  in nvme_enable_ctrl()  argument
2486 	ret = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);  in nvme_enable_ctrl()
2488 		dev_err(ctrl->device, "Reading CAP failed (%d)\n", ret);  in nvme_enable_ctrl()
2491 	dev_page_min = NVME_CAP_MPSMIN(ctrl->cap) + 12;  in nvme_enable_ctrl()
2494 		dev_err(ctrl->device,  in nvme_enable_ctrl()
2497 		return -ENODEV;  in nvme_enable_ctrl()
2500 	if (NVME_CAP_CSS(ctrl->cap) & NVME_CAP_CSS_CSI)  in nvme_enable_ctrl()
2501 		ctrl->ctrl_config = NVME_CC_CSS_CSI;  in nvme_enable_ctrl()
2503 		ctrl->ctrl_config = NVME_CC_CSS_NVM;  in nvme_enable_ctrl()
2511 	ctrl->ctrl_config &= ~NVME_CC_CRIME;  in nvme_enable_ctrl()
2513 	ctrl->ctrl_config |= (NVME_CTRL_PAGE_SHIFT - 12) << NVME_CC_MPS_SHIFT;  in nvme_enable_ctrl()
2514 	ctrl->ctrl_config |= NVME_CC_AMS_RR | NVME_CC_SHN_NONE;  in nvme_enable_ctrl()
2515 	ctrl->ctrl_config |= NVME_CC_IOSQES | NVME_CC_IOCQES;  in nvme_enable_ctrl()
2516 	ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);  in nvme_enable_ctrl()
2521 	ret = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);  in nvme_enable_ctrl()
2525 	timeout = NVME_CAP_TIMEOUT(ctrl->cap);  in nvme_enable_ctrl()
2526 	if (ctrl->cap & NVME_CAP_CRMS_CRWMS) {  in nvme_enable_ctrl()
2529 		ret = ctrl->ops->reg_read32(ctrl, NVME_REG_CRTO, &crto);  in nvme_enable_ctrl()
2531 			dev_err(ctrl->device, "Reading CRTO failed (%d)\n",  in nvme_enable_ctrl()
2544 			dev_warn_once(ctrl->device, "bad crto:%x cap:%llx\n",  in nvme_enable_ctrl()
2545 				      crto, ctrl->cap);  in nvme_enable_ctrl()
2550 	ctrl->ctrl_config |= NVME_CC_ENABLE;  in nvme_enable_ctrl()
2551 	ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);  in nvme_enable_ctrl()
2554 	return nvme_wait_ready(ctrl, NVME_CSTS_RDY, NVME_CSTS_RDY,  in nvme_enable_ctrl()
2559 static int nvme_configure_timestamp(struct nvme_ctrl *ctrl)  in nvme_configure_timestamp()  argument
2564 	if (!(ctrl->oncs & NVME_CTRL_ONCS_TIMESTAMP))  in nvme_configure_timestamp()
2568 	ret = nvme_set_features(ctrl, NVME_FEAT_TIMESTAMP, 0, &ts, sizeof(ts),  in nvme_configure_timestamp()
2571 		dev_warn_once(ctrl->device,  in nvme_configure_timestamp()
2576 static int nvme_configure_host_options(struct nvme_ctrl *ctrl)  in nvme_configure_host_options()  argument
2583 	if (ctrl->crdt[0])  in nvme_configure_host_options()
2585 	if (ctrl->ctratt & NVME_CTRL_ATTR_ELBAS)  in nvme_configure_host_options()
2595 	host->acre = acre;  in nvme_configure_host_options()
2596 	host->lbafee = lbafee;  in nvme_configure_host_options()
2597 	ret = nvme_set_features(ctrl, NVME_FEAT_HOST_BEHAVIOR, 0,  in nvme_configure_host_options()
2638  * - If the parameters provide explicit timeouts and tolerances, they will be
2639  *   used to build a table with up to 2 non-operational states to transition to.
2645  * - If not, we'll configure the table with a simple heuristic: we are willing
2648  *   lower-power non-operational state after waiting 50 * (enlat + exlat)
2652  * We will not autonomously enter any non-operational state for which the total
2657 static int nvme_configure_apst(struct nvme_ctrl *ctrl)  in nvme_configure_apst()  argument
2663 	int max_ps = -1;  in nvme_configure_apst()
2672 	if (!ctrl->apsta)  in nvme_configure_apst()
2675 	if (ctrl->npss > 31) {  in nvme_configure_apst()
2676 		dev_warn(ctrl->device, "NPSS is invalid; not using APST\n");  in nvme_configure_apst()
2684 	if (!ctrl->apst_enabled || ctrl->ps_max_latency_us == 0) {  in nvme_configure_apst()
2686 		dev_dbg(ctrl->device, "APST disabled\n");  in nvme_configure_apst()
2691 	 * Walk through all states from lowest- to highest-power.  in nvme_configure_apst()
2692 	 * According to the spec, lower-numbered states use more power.  NPSS,  in nvme_configure_apst()
2693 	 * despite the name, is the index of the lowest-power state, not the  in nvme_configure_apst()
2696 	for (state = (int)ctrl->npss; state >= 0; state--) {  in nvme_configure_apst()
2700 			table->entries[state] = target;  in nvme_configure_apst()
2706 		if (state == ctrl->npss &&  in nvme_configure_apst()
2707 		    (ctrl->quirks & NVME_QUIRK_NO_DEEPEST_PS))  in nvme_configure_apst()
2711 		 * Is this state a useful non-operational state for higher-power  in nvme_configure_apst()
2714 		if (!(ctrl->psd[state].flags & NVME_PS_FLAGS_NON_OP_STATE))  in nvme_configure_apst()
2717 		exit_latency_us = (u64)le32_to_cpu(ctrl->psd[state].exit_lat);  in nvme_configure_apst()
2718 		if (exit_latency_us > ctrl->ps_max_latency_us)  in nvme_configure_apst()
2722 			le32_to_cpu(ctrl->psd[state].entry_lat);  in nvme_configure_apst()
2735 			if (transition_ms > (1 << 24) - 1)  in nvme_configure_apst()
2736 				transition_ms = (1 << 24) - 1;  in nvme_configure_apst()
2740 		if (max_ps == -1)  in nvme_configure_apst()
2746 	if (max_ps == -1)  in nvme_configure_apst()
2747 		dev_dbg(ctrl->device, "APST enabled but no non-operational states are available\n");  in nvme_configure_apst()
2749 …dev_dbg(ctrl->device, "APST enabled: max PS = %d, max round-trip latency = %lluus, table = %*phN\n…  in nvme_configure_apst()
2754 	ret = nvme_set_features(ctrl, NVME_FEAT_AUTO_PST, apste,  in nvme_configure_apst()
2757 		dev_err(ctrl->device, "failed to set APST feature (%d)\n", ret);  in nvme_configure_apst()
2764 	struct nvme_ctrl *ctrl = dev_get_drvdata(dev);  in nvme_set_latency_tolerance()  local
2777 	if (ctrl->ps_max_latency_us != latency) {  in nvme_set_latency_tolerance()
2778 		ctrl->ps_max_latency_us = latency;  in nvme_set_latency_tolerance()
2779 		if (nvme_ctrl_state(ctrl) == NVME_CTRL_LIVE)  in nvme_set_latency_tolerance()
2780 			nvme_configure_apst(ctrl);  in nvme_set_latency_tolerance()
2808 		 * This LiteON CL1-3D*-Q11 firmware version has a race
2818 		 * This Kioxia CD6-V Series / HPE PE8030 device times out and
2823 		 * to use "nvme set-feature" to disable APST, but booting with
2846 /* match is null-terminated but idstr is space-padded. */
2870 	return q->vid == le16_to_cpu(id->vid) &&  in quirk_matches()
2871 		string_matches(id->mn, q->mn, sizeof(id->mn)) &&  in quirk_matches()
2872 		string_matches(id->fr, q->fr, sizeof(id->fr));  in quirk_matches()
2875 static void nvme_init_subnqn(struct nvme_subsystem *subsys, struct nvme_ctrl *ctrl,  in nvme_init_subnqn()  argument
2881 	if(!(ctrl->quirks & NVME_QUIRK_IGNORE_DEV_SUBNQN)) {  in nvme_init_subnqn()
2882 		nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);  in nvme_init_subnqn()
2884 			strscpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);  in nvme_init_subnqn()
2888 		if (ctrl->vs >= NVME_VS(1, 2, 1))  in nvme_init_subnqn()
2889 			dev_warn(ctrl->device, "missing or invalid SUBNQN field.\n");  in nvme_init_subnqn()
2897 	off = snprintf(subsys->subnqn, NVMF_NQN_SIZE,  in nvme_init_subnqn()
2899 			le16_to_cpu(id->vid), le16_to_cpu(id->ssvid));  in nvme_init_subnqn()
2900 	memcpy(subsys->subnqn + off, id->sn, sizeof(id->sn));  in nvme_init_subnqn()
2901 	off += sizeof(id->sn);  in nvme_init_subnqn()
2902 	memcpy(subsys->subnqn + off, id->mn, sizeof(id->mn));  in nvme_init_subnqn()
2903 	off += sizeof(id->mn);  in nvme_init_subnqn()
2904 	memset(subsys->subnqn + off, 0, sizeof(subsys->subnqn) - off);  in nvme_init_subnqn()
2912 	if (subsys->instance >= 0)  in nvme_release_subsystem()
2913 		ida_free(&nvme_instance_ida, subsys->instance);  in nvme_release_subsystem()
2923 	list_del(&subsys->entry);  in nvme_destroy_subsystem()
2926 	ida_destroy(&subsys->ns_ida);  in nvme_destroy_subsystem()
2927 	device_del(&subsys->dev);  in nvme_destroy_subsystem()
2928 	put_device(&subsys->dev);  in nvme_destroy_subsystem()
2933 	kref_put(&subsys->ref, nvme_destroy_subsystem);  in nvme_put_subsystem()
2954 		if (strcmp(subsys->subnqn, subsysnqn))  in __nvme_find_get_subsystem()
2956 		if (!kref_get_unless_zero(&subsys->ref))  in __nvme_find_get_subsystem()
2964 static inline bool nvme_discovery_ctrl(struct nvme_ctrl *ctrl)  in nvme_discovery_ctrl()  argument
2966 	return ctrl->opts && ctrl->opts->discovery_nqn;  in nvme_discovery_ctrl()
2970 		struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)  in nvme_validate_cntlid()  argument
2976 	list_for_each_entry(tmp, &subsys->ctrls, subsys_entry) {  in nvme_validate_cntlid()
2980 		if (tmp->cntlid == ctrl->cntlid) {  in nvme_validate_cntlid()
2981 			dev_err(ctrl->device,  in nvme_validate_cntlid()
2983 				ctrl->cntlid, dev_name(tmp->device),  in nvme_validate_cntlid()
2984 				subsys->subnqn);  in nvme_validate_cntlid()
2988 		if ((id->cmic & NVME_CTRL_CMIC_MULTI_CTRL) ||  in nvme_validate_cntlid()
2989 		    nvme_discovery_ctrl(ctrl))  in nvme_validate_cntlid()
2992 		dev_err(ctrl->device,  in nvme_validate_cntlid()
3000 static int nvme_init_subsystem(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)  in nvme_init_subsystem()  argument
3007 		return -ENOMEM;  in nvme_init_subsystem()
3009 	subsys->instance = -1;  in nvme_init_subsystem()
3010 	mutex_init(&subsys->lock);  in nvme_init_subsystem()
3011 	kref_init(&subsys->ref);  in nvme_init_subsystem()
3012 	INIT_LIST_HEAD(&subsys->ctrls);  in nvme_init_subsystem()
3013 	INIT_LIST_HEAD(&subsys->nsheads);  in nvme_init_subsystem()
3014 	nvme_init_subnqn(subsys, ctrl, id);  in nvme_init_subsystem()
3015 	memcpy(subsys->serial, id->sn, sizeof(subsys->serial));  in nvme_init_subsystem()
3016 	memcpy(subsys->model, id->mn, sizeof(subsys->model));  in nvme_init_subsystem()
3017 	subsys->vendor_id = le16_to_cpu(id->vid);  in nvme_init_subsystem()
3018 	subsys->cmic = id->cmic;  in nvme_init_subsystem()
3021 	if (id->cntrltype == NVME_CTRL_DISC ||  in nvme_init_subsystem()
3022 	    !strcmp(subsys->subnqn, NVME_DISC_SUBSYS_NAME))  in nvme_init_subsystem()
3023 		subsys->subtype = NVME_NQN_DISC;  in nvme_init_subsystem()
3025 		subsys->subtype = NVME_NQN_NVME;  in nvme_init_subsystem()
3027 	if (nvme_discovery_ctrl(ctrl) && subsys->subtype != NVME_NQN_DISC) {  in nvme_init_subsystem()
3028 		dev_err(ctrl->device,  in nvme_init_subsystem()
3030 			subsys->subnqn);  in nvme_init_subsystem()
3032 		return -EINVAL;  in nvme_init_subsystem()
3034 	subsys->awupf = le16_to_cpu(id->awupf);  in nvme_init_subsystem()
3037 	subsys->dev.class = &nvme_subsys_class;  in nvme_init_subsystem()
3038 	subsys->dev.release = nvme_release_subsystem;  in nvme_init_subsystem()
3039 	subsys->dev.groups = nvme_subsys_attrs_groups;  in nvme_init_subsystem()
3040 	dev_set_name(&subsys->dev, "nvme-subsys%d", ctrl->instance);  in nvme_init_subsystem()
3041 	device_initialize(&subsys->dev);  in nvme_init_subsystem()
3044 	found = __nvme_find_get_subsystem(subsys->subnqn);  in nvme_init_subsystem()
3046 		put_device(&subsys->dev);  in nvme_init_subsystem()
3049 		if (!nvme_validate_cntlid(subsys, ctrl, id)) {  in nvme_init_subsystem()
3050 			ret = -EINVAL;  in nvme_init_subsystem()
3054 		ret = device_add(&subsys->dev);  in nvme_init_subsystem()
3056 			dev_err(ctrl->device,  in nvme_init_subsystem()
3058 			put_device(&subsys->dev);  in nvme_init_subsystem()
3061 		ida_init(&subsys->ns_ida);  in nvme_init_subsystem()
3062 		list_add_tail(&subsys->entry, &nvme_subsystems);  in nvme_init_subsystem()
3065 	ret = sysfs_create_link(&subsys->dev.kobj, &ctrl->device->kobj,  in nvme_init_subsystem()
3066 				dev_name(ctrl->device));  in nvme_init_subsystem()
3068 		dev_err(ctrl->device,  in nvme_init_subsystem()
3074 		subsys->instance = ctrl->instance;  in nvme_init_subsystem()
3075 	ctrl->subsys = subsys;  in nvme_init_subsystem()
3076 	list_add_tail(&ctrl->subsys_entry, &subsys->ctrls);  in nvme_init_subsystem()
3087 int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp, u8 csi,  in nvme_get_log()  argument
3097 	c.get_log_page.numdl = cpu_to_le16(dwlen & ((1 << 16) - 1));  in nvme_get_log()
3103 	return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);  in nvme_get_log()
3106 static int nvme_get_effects_log(struct nvme_ctrl *ctrl, u8 csi,  in nvme_get_effects_log()  argument
3109 	struct nvme_effects_log *old, *cel = xa_load(&ctrl->cels, csi);  in nvme_get_effects_log()
3117 		return -ENOMEM;  in nvme_get_effects_log()
3119 	ret = nvme_get_log(ctrl, 0x00, NVME_LOG_CMD_EFFECTS, 0, csi,  in nvme_get_effects_log()
3126 	old = xa_store(&ctrl->cels, csi, cel, GFP_KERNEL);  in nvme_get_effects_log()
3136 static inline u32 nvme_mps_to_sectors(struct nvme_ctrl *ctrl, u32 units)  in nvme_mps_to_sectors()  argument
3138 	u32 page_shift = NVME_CAP_MPSMIN(ctrl->cap) + 12, val;  in nvme_mps_to_sectors()
3140 	if (check_shl_overflow(1U, units + page_shift - 9, &val))  in nvme_mps_to_sectors()
3145 static int nvme_init_non_mdts_limits(struct nvme_ctrl *ctrl)  in nvme_init_non_mdts_limits()  argument
3153 	 * to the write-zeroes, we are cautious and limit the size to the  in nvme_init_non_mdts_limits()
3157 	if ((ctrl->oncs & NVME_CTRL_ONCS_WRITE_ZEROES) &&  in nvme_init_non_mdts_limits()
3158 	    !(ctrl->quirks & NVME_QUIRK_DISABLE_WRITE_ZEROES))  in nvme_init_non_mdts_limits()
3159 		ctrl->max_zeroes_sectors = ctrl->max_hw_sectors;  in nvme_init_non_mdts_limits()
3161 		ctrl->max_zeroes_sectors = 0;  in nvme_init_non_mdts_limits()
3163 	if (ctrl->subsys->subtype != NVME_NQN_NVME ||  in nvme_init_non_mdts_limits()
3164 	    !nvme_id_cns_ok(ctrl, NVME_ID_CNS_CS_CTRL) ||  in nvme_init_non_mdts_limits()
3165 	    test_bit(NVME_CTRL_SKIP_ID_CNS_CS, &ctrl->flags))  in nvme_init_non_mdts_limits()
3170 		return -ENOMEM;  in nvme_init_non_mdts_limits()
3176 	ret = nvme_submit_sync_cmd(ctrl->admin_q, &c, id, sizeof(*id));  in nvme_init_non_mdts_limits()
3180 	ctrl->dmrl = id->dmrl;  in nvme_init_non_mdts_limits()
3181 	ctrl->dmrsl = le32_to_cpu(id->dmrsl);  in nvme_init_non_mdts_limits()
3182 	if (id->wzsl)  in nvme_init_non_mdts_limits()
3183 		ctrl->max_zeroes_sectors = nvme_mps_to_sectors(ctrl, id->wzsl);  in nvme_init_non_mdts_limits()
3187 		set_bit(NVME_CTRL_SKIP_ID_CNS_CS, &ctrl->flags);  in nvme_init_non_mdts_limits()
3192 static int nvme_init_effects_log(struct nvme_ctrl *ctrl,  in nvme_init_effects_log()  argument
3199 		return -ENOMEM;  in nvme_init_effects_log()
3201 	old = xa_store(&ctrl->cels, csi, effects, GFP_KERNEL);  in nvme_init_effects_log()
3211 static void nvme_init_known_nvm_effects(struct nvme_ctrl *ctrl)  in nvme_init_known_nvm_effects()  argument
3213 	struct nvme_effects_log	*log = ctrl->effects;  in nvme_init_known_nvm_effects()
3215 	log->acs[nvme_admin_format_nvm] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC |  in nvme_init_known_nvm_effects()
3218 	log->acs[nvme_admin_sanitize_nvm] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC |  in nvme_init_known_nvm_effects()
3236 	log->acs[nvme_admin_security_recv] &= cpu_to_le32(~NVME_CMD_EFFECTS_CSE_MASK);  in nvme_init_known_nvm_effects()
3238 	log->iocs[nvme_cmd_write] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC);  in nvme_init_known_nvm_effects()
3239 	log->iocs[nvme_cmd_write_zeroes] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC);  in nvme_init_known_nvm_effects()
3240 	log->iocs[nvme_cmd_write_uncor] |= cpu_to_le32(NVME_CMD_EFFECTS_LBCC);  in nvme_init_known_nvm_effects()
3243 static int nvme_init_effects(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)  in nvme_init_effects()  argument
3247 	if (ctrl->effects)  in nvme_init_effects()
3250 	if (id->lpa & NVME_CTRL_LPA_CMD_EFFECTS_LOG) {  in nvme_init_effects()
3251 		ret = nvme_get_effects_log(ctrl, NVME_CSI_NVM, &ctrl->effects);  in nvme_init_effects()
3256 	if (!ctrl->effects) {  in nvme_init_effects()
3257 		ret = nvme_init_effects_log(ctrl, NVME_CSI_NVM, &ctrl->effects);  in nvme_init_effects()
3262 	nvme_init_known_nvm_effects(ctrl);  in nvme_init_effects()
3266 static int nvme_check_ctrl_fabric_info(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)  in nvme_check_ctrl_fabric_info()  argument
3272 	if (ctrl->cntlid != le16_to_cpu(id->cntlid)) {  in nvme_check_ctrl_fabric_info()
3273 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3275 			ctrl->cntlid, le16_to_cpu(id->cntlid));  in nvme_check_ctrl_fabric_info()
3276 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3279 	if (!nvme_discovery_ctrl(ctrl) && !ctrl->kas) {  in nvme_check_ctrl_fabric_info()
3280 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3281 			"keep-alive support is mandatory for fabrics\n");  in nvme_check_ctrl_fabric_info()
3282 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3285 	if (!nvme_discovery_ctrl(ctrl) && ctrl->ioccsz < 4) {  in nvme_check_ctrl_fabric_info()
3286 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3288 			ctrl->ioccsz);  in nvme_check_ctrl_fabric_info()
3289 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3292 	if (!nvme_discovery_ctrl(ctrl) && ctrl->iorcsz < 1) {  in nvme_check_ctrl_fabric_info()
3293 		dev_err(ctrl->device,  in nvme_check_ctrl_fabric_info()
3295 			ctrl->iorcsz);  in nvme_check_ctrl_fabric_info()
3296 		return -EINVAL;  in nvme_check_ctrl_fabric_info()
3299 	if (!ctrl->maxcmd) {  in nvme_check_ctrl_fabric_info()
3300 		dev_warn(ctrl->device,  in nvme_check_ctrl_fabric_info()
3302 		ctrl->maxcmd = ctrl->sqsize + 1;  in nvme_check_ctrl_fabric_info()
3308 static int nvme_init_identify(struct nvme_ctrl *ctrl)  in nvme_init_identify()  argument
3316 	ret = nvme_identify_ctrl(ctrl, &id);  in nvme_init_identify()
3318 		dev_err(ctrl->device, "Identify Controller failed (%d)\n", ret);  in nvme_init_identify()
3319 		return -EIO;  in nvme_init_identify()
3322 	if (!(ctrl->ops->flags & NVME_F_FABRICS))  in nvme_init_identify()
3323 		ctrl->cntlid = le16_to_cpu(id->cntlid);  in nvme_init_identify()
3325 	if (!ctrl->identified) {  in nvme_init_identify()
3332 		 * could re-scan for quirks every time we reinitialize  in nvme_init_identify()
3338 				ctrl->quirks |= core_quirks[i].quirks;  in nvme_init_identify()
3341 		ret = nvme_init_subsystem(ctrl, id);  in nvme_init_identify()
3345 		ret = nvme_init_effects(ctrl, id);  in nvme_init_identify()
3349 	memcpy(ctrl->subsys->firmware_rev, id->fr,  in nvme_init_identify()
3350 	       sizeof(ctrl->subsys->firmware_rev));  in nvme_init_identify()
3352 	if (force_apst && (ctrl->quirks & NVME_QUIRK_NO_DEEPEST_PS)) {  in nvme_init_identify()
3353 …dev_warn(ctrl->device, "forcibly allowing all power states due to nvme_core.force_apst -- use at y…  in nvme_init_identify()
3354 		ctrl->quirks &= ~NVME_QUIRK_NO_DEEPEST_PS;  in nvme_init_identify()
3357 	ctrl->crdt[0] = le16_to_cpu(id->crdt1);  in nvme_init_identify()
3358 	ctrl->crdt[1] = le16_to_cpu(id->crdt2);  in nvme_init_identify()
3359 	ctrl->crdt[2] = le16_to_cpu(id->crdt3);  in nvme_init_identify()
3361 	ctrl->oacs = le16_to_cpu(id->oacs);  in nvme_init_identify()
3362 	ctrl->oncs = le16_to_cpu(id->oncs);  in nvme_init_identify()
3363 	ctrl->mtfa = le16_to_cpu(id->mtfa);  in nvme_init_identify()
3364 	ctrl->oaes = le32_to_cpu(id->oaes);  in nvme_init_identify()
3365 	ctrl->wctemp = le16_to_cpu(id->wctemp);  in nvme_init_identify()
3366 	ctrl->cctemp = le16_to_cpu(id->cctemp);  in nvme_init_identify()
3368 	atomic_set(&ctrl->abort_limit, id->acl + 1);  in nvme_init_identify()
3369 	ctrl->vwc = id->vwc;  in nvme_init_identify()
3370 	if (id->mdts)  in nvme_init_identify()
3371 		max_hw_sectors = nvme_mps_to_sectors(ctrl, id->mdts);  in nvme_init_identify()
3374 	ctrl->max_hw_sectors =  in nvme_init_identify()
3375 		min_not_zero(ctrl->max_hw_sectors, max_hw_sectors);  in nvme_init_identify()
3377 	lim = queue_limits_start_update(ctrl->admin_q);  in nvme_init_identify()
3378 	nvme_set_ctrl_limits(ctrl, &lim);  in nvme_init_identify()
3379 	ret = queue_limits_commit_update(ctrl->admin_q, &lim);  in nvme_init_identify()
3383 	ctrl->sgls = le32_to_cpu(id->sgls);  in nvme_init_identify()
3384 	ctrl->kas = le16_to_cpu(id->kas);  in nvme_init_identify()
3385 	ctrl->max_namespaces = le32_to_cpu(id->mnan);  in nvme_init_identify()
3386 	ctrl->ctratt = le32_to_cpu(id->ctratt);  in nvme_init_identify()
3388 	ctrl->cntrltype = id->cntrltype;  in nvme_init_identify()
3389 	ctrl->dctype = id->dctype;  in nvme_init_identify()
3391 	if (id->rtd3e) {  in nvme_init_identify()
3392 		/* us -> s */  in nvme_init_identify()
3393 		u32 transition_time = le32_to_cpu(id->rtd3e) / USEC_PER_SEC;  in nvme_init_identify()
3395 		ctrl->shutdown_timeout = clamp_t(unsigned int, transition_time,  in nvme_init_identify()
3398 		if (ctrl->shutdown_timeout != shutdown_timeout)  in nvme_init_identify()
3399 			dev_info(ctrl->device,  in nvme_init_identify()
3401 				 ctrl->shutdown_timeout);  in nvme_init_identify()
3403 		ctrl->shutdown_timeout = shutdown_timeout;  in nvme_init_identify()
3405 	ctrl->npss = id->npss;  in nvme_init_identify()
3406 	ctrl->apsta = id->apsta;  in nvme_init_identify()
3407 	prev_apst_enabled = ctrl->apst_enabled;  in nvme_init_identify()
3408 	if (ctrl->quirks & NVME_QUIRK_NO_APST) {  in nvme_init_identify()
3409 		if (force_apst && id->apsta) {  in nvme_init_identify()
3410 …dev_warn(ctrl->device, "forcibly allowing APST due to nvme_core.force_apst -- use at your own risk…  in nvme_init_identify()
3411 			ctrl->apst_enabled = true;  in nvme_init_identify()
3413 			ctrl->apst_enabled = false;  in nvme_init_identify()
3416 		ctrl->apst_enabled = id->apsta;  in nvme_init_identify()
3418 	memcpy(ctrl->psd, id->psd, sizeof(ctrl->psd));  in nvme_init_identify()
3420 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_init_identify()
3421 		ctrl->icdoff = le16_to_cpu(id->icdoff);  in nvme_init_identify()
3422 		ctrl->ioccsz = le32_to_cpu(id->ioccsz);  in nvme_init_identify()
3423 		ctrl->iorcsz = le32_to_cpu(id->iorcsz);  in nvme_init_identify()
3424 		ctrl->maxcmd = le16_to_cpu(id->maxcmd);  in nvme_init_identify()
3426 		ret = nvme_check_ctrl_fabric_info(ctrl, id);  in nvme_init_identify()
3430 		ctrl->hmpre = le32_to_cpu(id->hmpre);  in nvme_init_identify()
3431 		ctrl->hmmin = le32_to_cpu(id->hmmin);  in nvme_init_identify()
3432 		ctrl->hmminds = le32_to_cpu(id->hmminds);  in nvme_init_identify()
3433 		ctrl->hmmaxd = le16_to_cpu(id->hmmaxd);  in nvme_init_identify()
3436 	ret = nvme_mpath_init_identify(ctrl, id);  in nvme_init_identify()
3440 	if (ctrl->apst_enabled && !prev_apst_enabled)  in nvme_init_identify()
3441 		dev_pm_qos_expose_latency_tolerance(ctrl->device);  in nvme_init_identify()
3442 	else if (!ctrl->apst_enabled && prev_apst_enabled)  in nvme_init_identify()
3443 		dev_pm_qos_hide_latency_tolerance(ctrl->device);  in nvme_init_identify()
3455 int nvme_init_ctrl_finish(struct nvme_ctrl *ctrl, bool was_suspended)  in nvme_init_ctrl_finish()  argument
3459 	ret = ctrl->ops->reg_read32(ctrl, NVME_REG_VS, &ctrl->vs);  in nvme_init_ctrl_finish()
3461 		dev_err(ctrl->device, "Reading VS failed (%d)\n", ret);  in nvme_init_ctrl_finish()
3465 	ctrl->sqsize = min_t(u16, NVME_CAP_MQES(ctrl->cap), ctrl->sqsize);  in nvme_init_ctrl_finish()
3467 	if (ctrl->vs >= NVME_VS(1, 1, 0))  in nvme_init_ctrl_finish()
3468 		ctrl->subsystem = NVME_CAP_NSSRC(ctrl->cap);  in nvme_init_ctrl_finish()
3470 	ret = nvme_init_identify(ctrl);  in nvme_init_ctrl_finish()
3474 	ret = nvme_configure_apst(ctrl);  in nvme_init_ctrl_finish()
3478 	ret = nvme_configure_timestamp(ctrl);  in nvme_init_ctrl_finish()
3482 	ret = nvme_configure_host_options(ctrl);  in nvme_init_ctrl_finish()
3486 	nvme_configure_opal(ctrl, was_suspended);  in nvme_init_ctrl_finish()
3488 	if (!ctrl->identified && !nvme_discovery_ctrl(ctrl)) {  in nvme_init_ctrl_finish()
3493 		ret = nvme_hwmon_init(ctrl);  in nvme_init_ctrl_finish()
3494 		if (ret == -EINTR)  in nvme_init_ctrl_finish()
3498 	clear_bit(NVME_CTRL_DIRTY_CAPABILITY, &ctrl->flags);  in nvme_init_ctrl_finish()
3499 	ctrl->identified = true;  in nvme_init_ctrl_finish()
3501 	nvme_start_keep_alive(ctrl);  in nvme_init_ctrl_finish()
3509 	struct nvme_ctrl *ctrl =  in nvme_dev_open()  local
3510 		container_of(inode->i_cdev, struct nvme_ctrl, cdev);  in nvme_dev_open()
3512 	switch (nvme_ctrl_state(ctrl)) {  in nvme_dev_open()
3516 		return -EWOULDBLOCK;  in nvme_dev_open()
3519 	nvme_get_ctrl(ctrl);  in nvme_dev_open()
3520 	if (!try_module_get(ctrl->ops->module)) {  in nvme_dev_open()
3521 		nvme_put_ctrl(ctrl);  in nvme_dev_open()
3522 		return -EINVAL;  in nvme_dev_open()
3525 	file->private_data = ctrl;  in nvme_dev_open()
3531 	struct nvme_ctrl *ctrl =  in nvme_dev_release()  local
3532 		container_of(inode->i_cdev, struct nvme_ctrl, cdev);  in nvme_dev_release()
3534 	module_put(ctrl->ops->module);  in nvme_dev_release()
3535 	nvme_put_ctrl(ctrl);  in nvme_dev_release()
3548 static struct nvme_ns_head *nvme_find_ns_head(struct nvme_ctrl *ctrl,  in nvme_find_ns_head()  argument
3553 	lockdep_assert_held(&ctrl->subsys->lock);  in nvme_find_ns_head()
3555 	list_for_each_entry(h, &ctrl->subsys->nsheads, entry) {  in nvme_find_ns_head()
3561 		if (h->ns_id != nsid || !nvme_is_unique_nsid(ctrl, h))  in nvme_find_ns_head()
3563 		if (!list_empty(&h->list) && nvme_tryget_ns_head(h))  in nvme_find_ns_head()
3571 		struct nvme_ns_ids *ids)  in nvme_subsys_check_duplicate_ids()  argument
3573 	bool has_uuid = !uuid_is_null(&ids->uuid);  in nvme_subsys_check_duplicate_ids()
3574 	bool has_nguid = memchr_inv(ids->nguid, 0, sizeof(ids->nguid));  in nvme_subsys_check_duplicate_ids()
3575 	bool has_eui64 = memchr_inv(ids->eui64, 0, sizeof(ids->eui64));  in nvme_subsys_check_duplicate_ids()
3578 	lockdep_assert_held(&subsys->lock);  in nvme_subsys_check_duplicate_ids()
3580 	list_for_each_entry(h, &subsys->nsheads, entry) {  in nvme_subsys_check_duplicate_ids()
3581 		if (has_uuid && uuid_equal(&ids->uuid, &h->ids.uuid))  in nvme_subsys_check_duplicate_ids()
3582 			return -EINVAL;  in nvme_subsys_check_duplicate_ids()
3584 		    memcmp(&ids->nguid, &h->ids.nguid, sizeof(ids->nguid)) == 0)  in nvme_subsys_check_duplicate_ids()
3585 			return -EINVAL;  in nvme_subsys_check_duplicate_ids()
3587 		    memcmp(&ids->eui64, &h->ids.eui64, sizeof(ids->eui64)) == 0)  in nvme_subsys_check_duplicate_ids()
3588 			return -EINVAL;  in nvme_subsys_check_duplicate_ids()
3596 	ida_free(&nvme_ns_chr_minor_ida, MINOR(dev->devt));  in nvme_cdev_rel()
3613 	cdev_device->devt = MKDEV(MAJOR(nvme_ns_chr_devt), minor);  in nvme_cdev_add()
3614 	cdev_device->class = &nvme_ns_chr_class;  in nvme_cdev_add()
3615 	cdev_device->release = nvme_cdev_rel;  in nvme_cdev_add()
3618 	cdev->owner = owner;  in nvme_cdev_add()
3628 	return nvme_ns_open(container_of(inode->i_cdev, struct nvme_ns, cdev));  in nvme_ns_chr_open()
3633 	nvme_ns_release(container_of(inode->i_cdev, struct nvme_ns, cdev));  in nvme_ns_chr_release()
3651 	ns->cdev_device.parent = ns->ctrl->device;  in nvme_add_ns_cdev()
3652 	ret = dev_set_name(&ns->cdev_device, "ng%dn%d",  in nvme_add_ns_cdev()
3653 			   ns->ctrl->instance, ns->head->instance);  in nvme_add_ns_cdev()
3657 	return nvme_cdev_add(&ns->cdev, &ns->cdev_device, &nvme_ns_chr_fops,  in nvme_add_ns_cdev()
3658 			     ns->ctrl->ops->module);  in nvme_add_ns_cdev()
3661 static struct nvme_ns_head *nvme_alloc_ns_head(struct nvme_ctrl *ctrl,  in nvme_alloc_ns_head()  argument
3666 	int ret = -ENOMEM;  in nvme_alloc_ns_head()
3675 	ret = ida_alloc_min(&ctrl->subsys->ns_ida, 1, GFP_KERNEL);  in nvme_alloc_ns_head()
3678 	head->instance = ret;  in nvme_alloc_ns_head()
3679 	INIT_LIST_HEAD(&head->list);  in nvme_alloc_ns_head()
3680 	ret = init_srcu_struct(&head->srcu);  in nvme_alloc_ns_head()
3683 	head->subsys = ctrl->subsys;  in nvme_alloc_ns_head()
3684 	head->ns_id = info->nsid;  in nvme_alloc_ns_head()
3685 	head->ids = info->ids;  in nvme_alloc_ns_head()
3686 	head->shared = info->is_shared;  in nvme_alloc_ns_head()
3687 	head->rotational = info->is_rotational;  in nvme_alloc_ns_head()
3688 	ratelimit_state_init(&head->rs_nuse, 5 * HZ, 1);  in nvme_alloc_ns_head()
3689 	ratelimit_set_flags(&head->rs_nuse, RATELIMIT_MSG_ON_RELEASE);  in nvme_alloc_ns_head()
3690 	kref_init(&head->ref);  in nvme_alloc_ns_head()
3692 	if (head->ids.csi) {  in nvme_alloc_ns_head()
3693 		ret = nvme_get_effects_log(ctrl, head->ids.csi, &head->effects);  in nvme_alloc_ns_head()
3697 		head->effects = ctrl->effects;  in nvme_alloc_ns_head()
3699 	ret = nvme_mpath_alloc_disk(ctrl, head);  in nvme_alloc_ns_head()
3703 	list_add_tail(&head->entry, &ctrl->subsys->nsheads);  in nvme_alloc_ns_head()
3705 	kref_get(&ctrl->subsys->ref);  in nvme_alloc_ns_head()
3709 	cleanup_srcu_struct(&head->srcu);  in nvme_alloc_ns_head()
3711 	ida_free(&ctrl->subsys->ns_ida, head->instance);  in nvme_alloc_ns_head()
3721 		struct nvme_ns_ids *ids)  in nvme_global_check_duplicate_ids()  argument
3735 		mutex_lock(&s->lock);  in nvme_global_check_duplicate_ids()
3736 		ret = nvme_subsys_check_duplicate_ids(s, ids);  in nvme_global_check_duplicate_ids()
3737 		mutex_unlock(&s->lock);  in nvme_global_check_duplicate_ids()
3748 	struct nvme_ctrl *ctrl = ns->ctrl;  in nvme_init_ns_head()  local
3752 	ret = nvme_global_check_duplicate_ids(ctrl->subsys, &info->ids);  in nvme_init_ns_head()
3759 		 * and in user space the /dev/disk/by-id/ links rely on it.  in nvme_init_ns_head()
3761 		 * If the device also claims to be multi-path capable back off  in nvme_init_ns_head()
3770 		nvme_print_device_info(ctrl);  in nvme_init_ns_head()
3771 		if ((ns->ctrl->ops->flags & NVME_F_FABRICS) || /* !PCIe */  in nvme_init_ns_head()
3772 		    ((ns->ctrl->subsys->cmic & NVME_CTRL_CMIC_MULTI_CTRL) &&  in nvme_init_ns_head()
3773 		     info->is_shared)) {  in nvme_init_ns_head()
3774 			dev_err(ctrl->device,  in nvme_init_ns_head()
3775 				"ignoring nsid %d because of duplicate IDs\n",  in nvme_init_ns_head()
3776 				info->nsid);  in nvme_init_ns_head()
3780 		dev_err(ctrl->device,  in nvme_init_ns_head()
3781 			"clearing duplicate IDs for nsid %d\n", info->nsid);  in nvme_init_ns_head()
3782 		dev_err(ctrl->device,  in nvme_init_ns_head()
3783 			"use of /dev/disk/by-id/ may cause data corruption\n");  in nvme_init_ns_head()
3784 		memset(&info->ids.nguid, 0, sizeof(info->ids.nguid));  in nvme_init_ns_head()
3785 		memset(&info->ids.uuid, 0, sizeof(info->ids.uuid));  in nvme_init_ns_head()
3786 		memset(&info->ids.eui64, 0, sizeof(info->ids.eui64));  in nvme_init_ns_head()
3787 		ctrl->quirks |= NVME_QUIRK_BOGUS_NID;  in nvme_init_ns_head()
3790 	mutex_lock(&ctrl->subsys->lock);  in nvme_init_ns_head()
3791 	head = nvme_find_ns_head(ctrl, info->nsid);  in nvme_init_ns_head()
3793 		ret = nvme_subsys_check_duplicate_ids(ctrl->subsys, &info->ids);  in nvme_init_ns_head()
3795 			dev_err(ctrl->device,  in nvme_init_ns_head()
3796 				"duplicate IDs in subsystem for nsid %d\n",  in nvme_init_ns_head()
3797 				info->nsid);  in nvme_init_ns_head()
3800 		head = nvme_alloc_ns_head(ctrl, info);  in nvme_init_ns_head()
3806 		ret = -EINVAL;  in nvme_init_ns_head()
3807 		if (!info->is_shared || !head->shared) {  in nvme_init_ns_head()
3808 			dev_err(ctrl->device,  in nvme_init_ns_head()
3810 				info->nsid);  in nvme_init_ns_head()
3813 		if (!nvme_ns_ids_equal(&head->ids, &info->ids)) {  in nvme_init_ns_head()
3814 			dev_err(ctrl->device,  in nvme_init_ns_head()
3815 				"IDs don't match for shared namespace %d\n",  in nvme_init_ns_head()
3816 					info->nsid);  in nvme_init_ns_head()
3821 			dev_warn(ctrl->device,  in nvme_init_ns_head()
3823 				info->nsid);  in nvme_init_ns_head()
3824 			dev_warn_once(ctrl->device,  in nvme_init_ns_head()
3829 	list_add_tail_rcu(&ns->siblings, &head->list);  in nvme_init_ns_head()
3830 	ns->head = head;  in nvme_init_ns_head()
3831 	mutex_unlock(&ctrl->subsys->lock);  in nvme_init_ns_head()
3837 	mutex_unlock(&ctrl->subsys->lock);  in nvme_init_ns_head()
3841 struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)  in nvme_find_get_ns()  argument
3846 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_find_get_ns()
3847 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_find_get_ns()
3848 				 srcu_read_lock_held(&ctrl->srcu)) {  in nvme_find_get_ns()
3849 		if (ns->head->ns_id == nsid) {  in nvme_find_get_ns()
3855 		if (ns->head->ns_id > nsid)  in nvme_find_get_ns()
3858 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_find_get_ns()
3870 	list_for_each_entry_reverse(tmp, &ns->ctrl->namespaces, list) {  in nvme_ns_add_to_ctrl_list()
3871 		if (tmp->head->ns_id < ns->head->ns_id) {  in nvme_ns_add_to_ctrl_list()
3872 			list_add_rcu(&ns->list, &tmp->list);  in nvme_ns_add_to_ctrl_list()
3876 	list_add(&ns->list, &ns->ctrl->namespaces);  in nvme_ns_add_to_ctrl_list()
3879 static void nvme_alloc_ns(struct nvme_ctrl *ctrl, struct nvme_ns_info *info)  in nvme_alloc_ns()  argument
3884 	int node = ctrl->numa_node;  in nvme_alloc_ns()
3890 	if (ctrl->opts && ctrl->opts->data_digest)  in nvme_alloc_ns()
3892 	if (ctrl->ops->supports_pci_p2pdma &&  in nvme_alloc_ns()
3893 	    ctrl->ops->supports_pci_p2pdma(ctrl))  in nvme_alloc_ns()
3896 	disk = blk_mq_alloc_disk(ctrl->tagset, &lim, ns);  in nvme_alloc_ns()
3899 	disk->fops = &nvme_bdev_ops;  in nvme_alloc_ns()
3900 	disk->private_data = ns;  in nvme_alloc_ns()
3902 	ns->disk = disk;  in nvme_alloc_ns()
3903 	ns->queue = disk->queue;  in nvme_alloc_ns()
3904 	ns->ctrl = ctrl;  in nvme_alloc_ns()
3905 	kref_init(&ns->kref);  in nvme_alloc_ns()
3921 	if (nvme_ns_head_multipath(ns->head)) {  in nvme_alloc_ns()
3922 		sprintf(disk->disk_name, "nvme%dc%dn%d", ctrl->subsys->instance,  in nvme_alloc_ns()
3923 			ctrl->instance, ns->head->instance);  in nvme_alloc_ns()
3924 		disk->flags |= GENHD_FL_HIDDEN;  in nvme_alloc_ns()
3926 		sprintf(disk->disk_name, "nvme%dn%d", ctrl->subsys->instance,  in nvme_alloc_ns()
3927 			ns->head->instance);  in nvme_alloc_ns()
3929 		sprintf(disk->disk_name, "nvme%dn%d", ctrl->instance,  in nvme_alloc_ns()
3930 			ns->head->instance);  in nvme_alloc_ns()
3936 	mutex_lock(&ctrl->namespaces_lock);  in nvme_alloc_ns()
3938 	 * Ensure that no namespaces are added to the ctrl list after the queues  in nvme_alloc_ns()
3941 	if (test_bit(NVME_CTRL_FROZEN, &ctrl->flags)) {  in nvme_alloc_ns()
3942 		mutex_unlock(&ctrl->namespaces_lock);  in nvme_alloc_ns()
3946 	mutex_unlock(&ctrl->namespaces_lock);  in nvme_alloc_ns()
3947 	synchronize_srcu(&ctrl->srcu);  in nvme_alloc_ns()
3948 	nvme_get_ctrl(ctrl);  in nvme_alloc_ns()
3950 	if (device_add_disk(ctrl->device, ns->disk, nvme_ns_attr_groups))  in nvme_alloc_ns()
3953 	if (!nvme_ns_head_multipath(ns->head))  in nvme_alloc_ns()
3956 	nvme_mpath_add_disk(ns, info->anagrpid);  in nvme_alloc_ns()
3957 	nvme_fault_inject_init(&ns->fault_inject, ns->disk->disk_name);  in nvme_alloc_ns()
3960 	 * Set ns->disk->device->driver_data to ns so we can access  in nvme_alloc_ns()
3961 	 * ns->head->passthru_err_log_enabled in  in nvme_alloc_ns()
3964 	dev_set_drvdata(disk_to_dev(ns->disk), ns);  in nvme_alloc_ns()
3969 	nvme_put_ctrl(ctrl);  in nvme_alloc_ns()
3970 	mutex_lock(&ctrl->namespaces_lock);  in nvme_alloc_ns()
3971 	list_del_rcu(&ns->list);  in nvme_alloc_ns()
3972 	mutex_unlock(&ctrl->namespaces_lock);  in nvme_alloc_ns()
3973 	synchronize_srcu(&ctrl->srcu);  in nvme_alloc_ns()
3975 	mutex_lock(&ctrl->subsys->lock);  in nvme_alloc_ns()
3976 	list_del_rcu(&ns->siblings);  in nvme_alloc_ns()
3977 	if (list_empty(&ns->head->list))  in nvme_alloc_ns()
3978 		list_del_init(&ns->head->entry);  in nvme_alloc_ns()
3979 	mutex_unlock(&ctrl->subsys->lock);  in nvme_alloc_ns()
3980 	nvme_put_ns_head(ns->head);  in nvme_alloc_ns()
3991 	if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))  in nvme_ns_remove()
3994 	clear_bit(NVME_NS_READY, &ns->flags);  in nvme_ns_remove()
3995 	set_capacity(ns->disk, 0);  in nvme_ns_remove()
3996 	nvme_fault_inject_fini(&ns->fault_inject);  in nvme_ns_remove()
4002 	synchronize_srcu(&ns->head->srcu);  in nvme_ns_remove()
4006 		synchronize_srcu(&ns->head->srcu);  in nvme_ns_remove()
4008 	mutex_lock(&ns->ctrl->subsys->lock);  in nvme_ns_remove()
4009 	list_del_rcu(&ns->siblings);  in nvme_ns_remove()
4010 	if (list_empty(&ns->head->list)) {  in nvme_ns_remove()
4011 		list_del_init(&ns->head->entry);  in nvme_ns_remove()
4014 	mutex_unlock(&ns->ctrl->subsys->lock);  in nvme_ns_remove()
4016 	/* guarantee not available in head->list */  in nvme_ns_remove()
4017 	synchronize_srcu(&ns->head->srcu);  in nvme_ns_remove()
4019 	if (!nvme_ns_head_multipath(ns->head))  in nvme_ns_remove()
4020 		nvme_cdev_del(&ns->cdev, &ns->cdev_device);  in nvme_ns_remove()
4021 	del_gendisk(ns->disk);  in nvme_ns_remove()
4023 	mutex_lock(&ns->ctrl->namespaces_lock);  in nvme_ns_remove()
4024 	list_del_rcu(&ns->list);  in nvme_ns_remove()
4025 	mutex_unlock(&ns->ctrl->namespaces_lock);  in nvme_ns_remove()
4026 	synchronize_srcu(&ns->ctrl->srcu);  in nvme_ns_remove()
4029 		nvme_mpath_shutdown_disk(ns->head);  in nvme_ns_remove()
4033 static void nvme_ns_remove_by_nsid(struct nvme_ctrl *ctrl, u32 nsid)  in nvme_ns_remove_by_nsid()  argument
4035 	struct nvme_ns *ns = nvme_find_get_ns(ctrl, nsid);  in nvme_ns_remove_by_nsid()
4047 	if (!nvme_ns_ids_equal(&ns->head->ids, &info->ids)) {  in nvme_validate_ns()
4048 		dev_err(ns->ctrl->device,  in nvme_validate_ns()
4049 			"identifiers changed for nsid %d\n", ns->head->ns_id);  in nvme_validate_ns()
4065 static void nvme_scan_ns(struct nvme_ctrl *ctrl, unsigned nsid)  in nvme_scan_ns()  argument
4071 	if (nvme_identify_ns_descs(ctrl, &info))  in nvme_scan_ns()
4074 	if (info.ids.csi != NVME_CSI_NVM && !nvme_multi_css(ctrl)) {  in nvme_scan_ns()
4075 		dev_warn(ctrl->device,  in nvme_scan_ns()
4085 	if ((ctrl->cap & NVME_CAP_CRMS_CRIMS) ||  in nvme_scan_ns()
4086 	    (info.ids.csi != NVME_CSI_NVM && info.ids.csi != NVME_CSI_ZNS) ||  in nvme_scan_ns()
4087 	    ctrl->vs >= NVME_VS(2, 0, 0))  in nvme_scan_ns()
4088 		ret = nvme_ns_info_from_id_cs_indep(ctrl, &info);  in nvme_scan_ns()
4090 		ret = nvme_ns_info_from_identify(ctrl, &info);  in nvme_scan_ns()
4093 		nvme_ns_remove_by_nsid(ctrl, nsid);  in nvme_scan_ns()
4102 	ns = nvme_find_get_ns(ctrl, nsid);  in nvme_scan_ns()
4107 		nvme_alloc_ns(ctrl, &info);  in nvme_scan_ns()
4112  * struct async_scan_info - keeps track of controller & NSIDs to scan
4113  * @ctrl:	Controller on which namespaces are being scanned
4123 	struct nvme_ctrl *ctrl;  member
4134 	idx = (u32)atomic_fetch_inc(&scan_info->next_nsid);  in nvme_scan_ns_async()
4135 	nsid = le32_to_cpu(scan_info->ns_list[idx]);  in nvme_scan_ns_async()
4137 	nvme_scan_ns(scan_info->ctrl, nsid);  in nvme_scan_ns_async()
4140 static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl,  in nvme_remove_invalid_namespaces()  argument
4146 	mutex_lock(&ctrl->namespaces_lock);  in nvme_remove_invalid_namespaces()
4147 	list_for_each_entry_safe(ns, next, &ctrl->namespaces, list) {  in nvme_remove_invalid_namespaces()
4148 		if (ns->head->ns_id > nsid) {  in nvme_remove_invalid_namespaces()
4149 			list_del_rcu(&ns->list);  in nvme_remove_invalid_namespaces()
4150 			synchronize_srcu(&ctrl->srcu);  in nvme_remove_invalid_namespaces()
4151 			list_add_tail_rcu(&ns->list, &rm_list);  in nvme_remove_invalid_namespaces()
4154 	mutex_unlock(&ctrl->namespaces_lock);  in nvme_remove_invalid_namespaces()
4160 static int nvme_scan_ns_list(struct nvme_ctrl *ctrl)  in nvme_scan_ns_list()  argument
4171 		return -ENOMEM;  in nvme_scan_ns_list()
4173 	scan_info.ctrl = ctrl;  in nvme_scan_ns_list()
4182 		ret = nvme_submit_sync_cmd(ctrl->admin_q, &cmd, ns_list,  in nvme_scan_ns_list()
4185 			dev_warn(ctrl->device,  in nvme_scan_ns_list()
4199 				nvme_ns_remove_by_nsid(ctrl, prev);  in nvme_scan_ns_list()
4204 	nvme_remove_invalid_namespaces(ctrl, prev);  in nvme_scan_ns_list()
4211 static void nvme_scan_ns_sequential(struct nvme_ctrl *ctrl)  in nvme_scan_ns_sequential()  argument
4216 	if (nvme_identify_ctrl(ctrl, &id))  in nvme_scan_ns_sequential()
4218 	nn = le32_to_cpu(id->nn);  in nvme_scan_ns_sequential()
4222 		nvme_scan_ns(ctrl, i);  in nvme_scan_ns_sequential()
4224 	nvme_remove_invalid_namespaces(ctrl, nn);  in nvme_scan_ns_sequential()
4227 static void nvme_clear_changed_ns_log(struct nvme_ctrl *ctrl)  in nvme_clear_changed_ns_log()  argument
4243 	error = nvme_get_log(ctrl, NVME_NSID_ALL, NVME_LOG_CHANGED_NS, 0,  in nvme_clear_changed_ns_log()
4246 		dev_warn(ctrl->device,  in nvme_clear_changed_ns_log()
4254 	struct nvme_ctrl *ctrl =  in nvme_scan_work()  local
4258 	/* No tagset on a live ctrl means IO queues could not created */  in nvme_scan_work()
4259 	if (nvme_ctrl_state(ctrl) != NVME_CTRL_LIVE || !ctrl->tagset)  in nvme_scan_work()
4265 	 * such scenario. Controller's non-mdts limits are reported in the unit  in nvme_scan_work()
4267 	 * namespace. Hence re-read the limits at the time of ns allocation.  in nvme_scan_work()
4269 	ret = nvme_init_non_mdts_limits(ctrl);  in nvme_scan_work()
4271 		dev_warn(ctrl->device,  in nvme_scan_work()
4272 			"reading non-mdts-limits failed: %d\n", ret);  in nvme_scan_work()
4276 	if (test_and_clear_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events)) {  in nvme_scan_work()
4277 		dev_info(ctrl->device, "rescanning namespaces.\n");  in nvme_scan_work()
4278 		nvme_clear_changed_ns_log(ctrl);  in nvme_scan_work()
4281 	mutex_lock(&ctrl->scan_lock);  in nvme_scan_work()
4282 	if (!nvme_id_cns_ok(ctrl, NVME_ID_CNS_NS_ACTIVE_LIST)) {  in nvme_scan_work()
4283 		nvme_scan_ns_sequential(ctrl);  in nvme_scan_work()
4290 		ret = nvme_scan_ns_list(ctrl);  in nvme_scan_work()
4292 			nvme_scan_ns_sequential(ctrl);  in nvme_scan_work()
4294 	mutex_unlock(&ctrl->scan_lock);  in nvme_scan_work()
4302 void nvme_remove_namespaces(struct nvme_ctrl *ctrl)  in nvme_remove_namespaces()  argument
4312 	nvme_mpath_clear_ctrl_paths(ctrl);  in nvme_remove_namespaces()
4318 	nvme_unquiesce_io_queues(ctrl);  in nvme_remove_namespaces()
4321 	flush_work(&ctrl->scan_work);  in nvme_remove_namespaces()
4329 	if (nvme_ctrl_state(ctrl) == NVME_CTRL_DEAD)  in nvme_remove_namespaces()
4330 		nvme_mark_namespaces_dead(ctrl);  in nvme_remove_namespaces()
4332 	/* this is a no-op when called from the controller reset handler */  in nvme_remove_namespaces()
4333 	nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING_NOIO);  in nvme_remove_namespaces()
4335 	mutex_lock(&ctrl->namespaces_lock);  in nvme_remove_namespaces()
4336 	list_splice_init_rcu(&ctrl->namespaces, &ns_list, synchronize_rcu);  in nvme_remove_namespaces()
4337 	mutex_unlock(&ctrl->namespaces_lock);  in nvme_remove_namespaces()
4338 	synchronize_srcu(&ctrl->srcu);  in nvme_remove_namespaces()
4347 	const struct nvme_ctrl *ctrl =  in nvme_class_uevent()  local
4349 	struct nvmf_ctrl_options *opts = ctrl->opts;  in nvme_class_uevent()
4352 	ret = add_uevent_var(env, "NVME_TRTYPE=%s", ctrl->ops->name);  in nvme_class_uevent()
4357 		ret = add_uevent_var(env, "NVME_TRADDR=%s", opts->traddr);  in nvme_class_uevent()
4362 				opts->trsvcid ?: "none");  in nvme_class_uevent()
4367 				opts->host_traddr ?: "none");  in nvme_class_uevent()
4372 				opts->host_iface ?: "none");  in nvme_class_uevent()
4377 static void nvme_change_uevent(struct nvme_ctrl *ctrl, char *envdata)  in nvme_change_uevent()  argument
4381 	kobject_uevent_env(&ctrl->device->kobj, KOBJ_CHANGE, envp);  in nvme_change_uevent()
4384 static void nvme_aen_uevent(struct nvme_ctrl *ctrl)  in nvme_aen_uevent()  argument
4387 	u32 aen_result = ctrl->aen_result;  in nvme_aen_uevent()
4389 	ctrl->aen_result = 0;  in nvme_aen_uevent()
4396 	kobject_uevent_env(&ctrl->device->kobj, KOBJ_CHANGE, envp);  in nvme_aen_uevent()
4402 	struct nvme_ctrl *ctrl =  in nvme_async_event_work()  local
4405 	nvme_aen_uevent(ctrl);  in nvme_async_event_work()
4409 	 * flushing ctrl async_event_work after changing the controller state  in nvme_async_event_work()
4412 	if (nvme_ctrl_state(ctrl) == NVME_CTRL_LIVE)  in nvme_async_event_work()
4413 		ctrl->ops->submit_async_event(ctrl);  in nvme_async_event_work()
4416 static bool nvme_ctrl_pp_status(struct nvme_ctrl *ctrl)  in nvme_ctrl_pp_status()  argument
4421 	if (ctrl->ops->reg_read32(ctrl, NVME_REG_CSTS, &csts))  in nvme_ctrl_pp_status()
4427 	return ((ctrl->ctrl_config & NVME_CC_ENABLE) && (csts & NVME_CSTS_PP));  in nvme_ctrl_pp_status()
4430 static void nvme_get_fw_slot_info(struct nvme_ctrl *ctrl)  in nvme_get_fw_slot_info()  argument
4439 	if (nvme_get_log(ctrl, NVME_NSID_ALL, NVME_LOG_FW_SLOT, 0, NVME_CSI_NVM,  in nvme_get_fw_slot_info()
4441 		dev_warn(ctrl->device, "Get FW SLOT INFO log error\n");  in nvme_get_fw_slot_info()
4445 	cur_fw_slot = log->afi & 0x7;  in nvme_get_fw_slot_info()
4446 	next_fw_slot = (log->afi & 0x70) >> 4;  in nvme_get_fw_slot_info()
4448 		dev_info(ctrl->device,  in nvme_get_fw_slot_info()
4453 	memcpy(ctrl->subsys->firmware_rev, &log->frs[cur_fw_slot - 1],  in nvme_get_fw_slot_info()
4454 		sizeof(ctrl->subsys->firmware_rev));  in nvme_get_fw_slot_info()
4462 	struct nvme_ctrl *ctrl = container_of(work,  in nvme_fw_act_work()  local
4466 	nvme_auth_stop(ctrl);  in nvme_fw_act_work()
4468 	if (ctrl->mtfa)  in nvme_fw_act_work()
4470 				msecs_to_jiffies(ctrl->mtfa * 100);  in nvme_fw_act_work()
4475 	nvme_quiesce_io_queues(ctrl);  in nvme_fw_act_work()
4476 	while (nvme_ctrl_pp_status(ctrl)) {  in nvme_fw_act_work()
4478 			dev_warn(ctrl->device,  in nvme_fw_act_work()
4480 			nvme_try_sched_reset(ctrl);  in nvme_fw_act_work()
4486 	if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_LIVE))  in nvme_fw_act_work()
4489 	nvme_unquiesce_io_queues(ctrl);  in nvme_fw_act_work()
4491 	nvme_get_fw_slot_info(ctrl);  in nvme_fw_act_work()
4493 	queue_work(nvme_wq, &ctrl->async_event_work);  in nvme_fw_act_work()
4506 static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)  in nvme_handle_aen_notice()  argument
4513 		set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);  in nvme_handle_aen_notice()
4514 		nvme_queue_scan(ctrl);  in nvme_handle_aen_notice()
4522 		if (nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING)) {  in nvme_handle_aen_notice()
4524 			queue_work(nvme_wq, &ctrl->fw_act_work);  in nvme_handle_aen_notice()
4529 		if (!ctrl->ana_log_buf)  in nvme_handle_aen_notice()
4531 		queue_work(nvme_wq, &ctrl->ana_work);  in nvme_handle_aen_notice()
4535 		ctrl->aen_result = result;  in nvme_handle_aen_notice()
4538 		dev_warn(ctrl->device, "async event result %08x\n", result);  in nvme_handle_aen_notice()
4543 static void nvme_handle_aer_persistent_error(struct nvme_ctrl *ctrl)  in nvme_handle_aer_persistent_error()  argument
4545 	dev_warn(ctrl->device,  in nvme_handle_aer_persistent_error()
4547 	nvme_reset_ctrl(ctrl);  in nvme_handle_aer_persistent_error()
4550 void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,  in nvme_complete_async_event()  argument
4553 	u32 result = le32_to_cpu(res->u32);  in nvme_complete_async_event()
4561 	trace_nvme_async_event(ctrl, result);  in nvme_complete_async_event()
4564 		requeue = nvme_handle_aen_notice(ctrl, result);  in nvme_complete_async_event()
4572 			nvme_handle_aer_persistent_error(ctrl);  in nvme_complete_async_event()
4579 		ctrl->aen_result = result;  in nvme_complete_async_event()
4586 		queue_work(nvme_wq, &ctrl->async_event_work);  in nvme_complete_async_event()
4590 int nvme_alloc_admin_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,  in nvme_alloc_admin_tag_set()  argument
4597 	set->ops = ops;  in nvme_alloc_admin_tag_set()
4598 	set->queue_depth = NVME_AQ_MQ_TAG_DEPTH;  in nvme_alloc_admin_tag_set()
4599 	if (ctrl->ops->flags & NVME_F_FABRICS)  in nvme_alloc_admin_tag_set()
4601 		set->reserved_tags = 2;  in nvme_alloc_admin_tag_set()
4602 	set->numa_node = ctrl->numa_node;  in nvme_alloc_admin_tag_set()
4603 	if (ctrl->ops->flags & NVME_F_BLOCKING)  in nvme_alloc_admin_tag_set()
4604 		set->flags |= BLK_MQ_F_BLOCKING;  in nvme_alloc_admin_tag_set()
4605 	set->cmd_size = cmd_size;  in nvme_alloc_admin_tag_set()
4606 	set->driver_data = ctrl;  in nvme_alloc_admin_tag_set()
4607 	set->nr_hw_queues = 1;  in nvme_alloc_admin_tag_set()
4608 	set->timeout = NVME_ADMIN_TIMEOUT;  in nvme_alloc_admin_tag_set()
4613 	ctrl->admin_q = blk_mq_alloc_queue(set, &lim, NULL);  in nvme_alloc_admin_tag_set()
4614 	if (IS_ERR(ctrl->admin_q)) {  in nvme_alloc_admin_tag_set()
4615 		ret = PTR_ERR(ctrl->admin_q);  in nvme_alloc_admin_tag_set()
4619 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_alloc_admin_tag_set()
4620 		ctrl->fabrics_q = blk_mq_alloc_queue(set, NULL, NULL);  in nvme_alloc_admin_tag_set()
4621 		if (IS_ERR(ctrl->fabrics_q)) {  in nvme_alloc_admin_tag_set()
4622 			ret = PTR_ERR(ctrl->fabrics_q);  in nvme_alloc_admin_tag_set()
4627 	ctrl->admin_tagset = set;  in nvme_alloc_admin_tag_set()
4631 	blk_mq_destroy_queue(ctrl->admin_q);  in nvme_alloc_admin_tag_set()
4632 	blk_put_queue(ctrl->admin_q);  in nvme_alloc_admin_tag_set()
4635 	ctrl->admin_q = NULL;  in nvme_alloc_admin_tag_set()
4636 	ctrl->fabrics_q = NULL;  in nvme_alloc_admin_tag_set()
4641 void nvme_remove_admin_tag_set(struct nvme_ctrl *ctrl)  in nvme_remove_admin_tag_set()  argument
4645 	 * we can not have keep-alive work running.  in nvme_remove_admin_tag_set()
4647 	nvme_stop_keep_alive(ctrl);  in nvme_remove_admin_tag_set()
4648 	blk_mq_destroy_queue(ctrl->admin_q);  in nvme_remove_admin_tag_set()
4649 	blk_put_queue(ctrl->admin_q);  in nvme_remove_admin_tag_set()
4650 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_remove_admin_tag_set()
4651 		blk_mq_destroy_queue(ctrl->fabrics_q);  in nvme_remove_admin_tag_set()
4652 		blk_put_queue(ctrl->fabrics_q);  in nvme_remove_admin_tag_set()
4654 	blk_mq_free_tag_set(ctrl->admin_tagset);  in nvme_remove_admin_tag_set()
4658 int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,  in nvme_alloc_io_tag_set()  argument
4665 	set->ops = ops;  in nvme_alloc_io_tag_set()
4666 	set->queue_depth = min_t(unsigned, ctrl->sqsize, BLK_MQ_MAX_DEPTH - 1);  in nvme_alloc_io_tag_set()
4671 	if (ctrl->quirks & NVME_QUIRK_SHARED_TAGS)  in nvme_alloc_io_tag_set()
4672 		set->reserved_tags = NVME_AQ_DEPTH;  in nvme_alloc_io_tag_set()
4673 	else if (ctrl->ops->flags & NVME_F_FABRICS)  in nvme_alloc_io_tag_set()
4675 		set->reserved_tags = 1;  in nvme_alloc_io_tag_set()
4676 	set->numa_node = ctrl->numa_node;  in nvme_alloc_io_tag_set()
4677 	if (ctrl->ops->flags & NVME_F_BLOCKING)  in nvme_alloc_io_tag_set()
4678 		set->flags |= BLK_MQ_F_BLOCKING;  in nvme_alloc_io_tag_set()
4679 	set->cmd_size = cmd_size;  in nvme_alloc_io_tag_set()
4680 	set->driver_data = ctrl;  in nvme_alloc_io_tag_set()
4681 	set->nr_hw_queues = ctrl->queue_count - 1;  in nvme_alloc_io_tag_set()
4682 	set->timeout = NVME_IO_TIMEOUT;  in nvme_alloc_io_tag_set()
4683 	set->nr_maps = nr_maps;  in nvme_alloc_io_tag_set()
4688 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_alloc_io_tag_set()
4693 		ctrl->connect_q = blk_mq_alloc_queue(set, &lim, NULL);  in nvme_alloc_io_tag_set()
4694         	if (IS_ERR(ctrl->connect_q)) {  in nvme_alloc_io_tag_set()
4695 			ret = PTR_ERR(ctrl->connect_q);  in nvme_alloc_io_tag_set()
4700 	ctrl->tagset = set;  in nvme_alloc_io_tag_set()
4705 	ctrl->connect_q = NULL;  in nvme_alloc_io_tag_set()
4710 void nvme_remove_io_tag_set(struct nvme_ctrl *ctrl)  in nvme_remove_io_tag_set()  argument
4712 	if (ctrl->ops->flags & NVME_F_FABRICS) {  in nvme_remove_io_tag_set()
4713 		blk_mq_destroy_queue(ctrl->connect_q);  in nvme_remove_io_tag_set()
4714 		blk_put_queue(ctrl->connect_q);  in nvme_remove_io_tag_set()
4716 	blk_mq_free_tag_set(ctrl->tagset);  in nvme_remove_io_tag_set()
4720 void nvme_stop_ctrl(struct nvme_ctrl *ctrl)  in nvme_stop_ctrl()  argument
4722 	nvme_mpath_stop(ctrl);  in nvme_stop_ctrl()
4723 	nvme_auth_stop(ctrl);  in nvme_stop_ctrl()
4724 	nvme_stop_failfast_work(ctrl);  in nvme_stop_ctrl()
4725 	flush_work(&ctrl->async_event_work);  in nvme_stop_ctrl()
4726 	cancel_work_sync(&ctrl->fw_act_work);  in nvme_stop_ctrl()
4727 	if (ctrl->ops->stop_ctrl)  in nvme_stop_ctrl()
4728 		ctrl->ops->stop_ctrl(ctrl);  in nvme_stop_ctrl()
4732 void nvme_start_ctrl(struct nvme_ctrl *ctrl)  in nvme_start_ctrl()  argument
4734 	nvme_enable_aen(ctrl);  in nvme_start_ctrl()
4738 	 * to re-read the discovery log page to learn about possible changes  in nvme_start_ctrl()
4742 	if (test_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags) &&  in nvme_start_ctrl()
4743 	    nvme_discovery_ctrl(ctrl))  in nvme_start_ctrl()
4744 		nvme_change_uevent(ctrl, "NVME_EVENT=rediscover");  in nvme_start_ctrl()
4746 	if (ctrl->queue_count > 1) {  in nvme_start_ctrl()
4747 		nvme_queue_scan(ctrl);  in nvme_start_ctrl()
4748 		nvme_unquiesce_io_queues(ctrl);  in nvme_start_ctrl()
4749 		nvme_mpath_update(ctrl);  in nvme_start_ctrl()
4752 	nvme_change_uevent(ctrl, "NVME_EVENT=connected");  in nvme_start_ctrl()
4753 	set_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags);  in nvme_start_ctrl()
4757 void nvme_uninit_ctrl(struct nvme_ctrl *ctrl)  in nvme_uninit_ctrl()  argument
4759 	nvme_stop_keep_alive(ctrl);  in nvme_uninit_ctrl()
4760 	nvme_hwmon_exit(ctrl);  in nvme_uninit_ctrl()
4761 	nvme_fault_inject_fini(&ctrl->fault_inject);  in nvme_uninit_ctrl()
4762 	dev_pm_qos_hide_latency_tolerance(ctrl->device);  in nvme_uninit_ctrl()
4763 	cdev_device_del(&ctrl->cdev, ctrl->device);  in nvme_uninit_ctrl()
4764 	nvme_put_ctrl(ctrl);  in nvme_uninit_ctrl()
4768 static void nvme_free_cels(struct nvme_ctrl *ctrl)  in nvme_free_cels()  argument
4773 	xa_for_each(&ctrl->cels, i, cel) {  in nvme_free_cels()
4774 		xa_erase(&ctrl->cels, i);  in nvme_free_cels()
4778 	xa_destroy(&ctrl->cels);  in nvme_free_cels()
4783 	struct nvme_ctrl *ctrl =  in nvme_free_ctrl()  local
4785 	struct nvme_subsystem *subsys = ctrl->subsys;  in nvme_free_ctrl()
4787 	if (!subsys || ctrl->instance != subsys->instance)  in nvme_free_ctrl()
4788 		ida_free(&nvme_instance_ida, ctrl->instance);  in nvme_free_ctrl()
4789 	nvme_free_cels(ctrl);  in nvme_free_ctrl()
4790 	nvme_mpath_uninit(ctrl);  in nvme_free_ctrl()
4791 	cleanup_srcu_struct(&ctrl->srcu);  in nvme_free_ctrl()
4792 	nvme_auth_stop(ctrl);  in nvme_free_ctrl()
4793 	nvme_auth_free(ctrl);  in nvme_free_ctrl()
4794 	__free_page(ctrl->discard_page);  in nvme_free_ctrl()
4795 	free_opal_dev(ctrl->opal_dev);  in nvme_free_ctrl()
4799 		list_del(&ctrl->subsys_entry);  in nvme_free_ctrl()
4800 		sysfs_remove_link(&subsys->dev.kobj, dev_name(ctrl->device));  in nvme_free_ctrl()
4804 	ctrl->ops->free_ctrl(ctrl);  in nvme_free_ctrl()
4816  * needed, which also invokes the ops->free_ctrl() callback.
4818 int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,  in nvme_init_ctrl()  argument
4823 	WRITE_ONCE(ctrl->state, NVME_CTRL_NEW);  in nvme_init_ctrl()
4824 	ctrl->passthru_err_log_enabled = false;  in nvme_init_ctrl()
4825 	clear_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags);  in nvme_init_ctrl()
4826 	spin_lock_init(&ctrl->lock);  in nvme_init_ctrl()
4827 	mutex_init(&ctrl->namespaces_lock);  in nvme_init_ctrl()
4829 	ret = init_srcu_struct(&ctrl->srcu);  in nvme_init_ctrl()
4833 	mutex_init(&ctrl->scan_lock);  in nvme_init_ctrl()
4834 	INIT_LIST_HEAD(&ctrl->namespaces);  in nvme_init_ctrl()
4835 	xa_init(&ctrl->cels);  in nvme_init_ctrl()
4836 	ctrl->dev = dev;  in nvme_init_ctrl()
4837 	ctrl->ops = ops;  in nvme_init_ctrl()
4838 	ctrl->quirks = quirks;  in nvme_init_ctrl()
4839 	ctrl->numa_node = NUMA_NO_NODE;  in nvme_init_ctrl()
4840 	INIT_WORK(&ctrl->scan_work, nvme_scan_work);  in nvme_init_ctrl()
4841 	INIT_WORK(&ctrl->async_event_work, nvme_async_event_work);  in nvme_init_ctrl()
4842 	INIT_WORK(&ctrl->fw_act_work, nvme_fw_act_work);  in nvme_init_ctrl()
4843 	INIT_WORK(&ctrl->delete_work, nvme_delete_ctrl_work);  in nvme_init_ctrl()
4844 	init_waitqueue_head(&ctrl->state_wq);  in nvme_init_ctrl()
4846 	INIT_DELAYED_WORK(&ctrl->ka_work, nvme_keep_alive_work);  in nvme_init_ctrl()
4847 	INIT_DELAYED_WORK(&ctrl->failfast_work, nvme_failfast_work);  in nvme_init_ctrl()
4848 	memset(&ctrl->ka_cmd, 0, sizeof(ctrl->ka_cmd));  in nvme_init_ctrl()
4849 	ctrl->ka_cmd.common.opcode = nvme_admin_keep_alive;  in nvme_init_ctrl()
4850 	ctrl->ka_last_check_time = jiffies;  in nvme_init_ctrl()
4854 	ctrl->discard_page = alloc_page(GFP_KERNEL);  in nvme_init_ctrl()
4855 	if (!ctrl->discard_page) {  in nvme_init_ctrl()
4856 		ret = -ENOMEM;  in nvme_init_ctrl()
4863 	ctrl->instance = ret;  in nvme_init_ctrl()
4865 	ret = nvme_auth_init_ctrl(ctrl);  in nvme_init_ctrl()
4869 	nvme_mpath_init_ctrl(ctrl);  in nvme_init_ctrl()
4871 	device_initialize(&ctrl->ctrl_device);  in nvme_init_ctrl()
4872 	ctrl->device = &ctrl->ctrl_device;  in nvme_init_ctrl()
4873 	ctrl->device->devt = MKDEV(MAJOR(nvme_ctrl_base_chr_devt),  in nvme_init_ctrl()
4874 			ctrl->instance);  in nvme_init_ctrl()
4875 	ctrl->device->class = &nvme_class;  in nvme_init_ctrl()
4876 	ctrl->device->parent = ctrl->dev;  in nvme_init_ctrl()
4877 	if (ops->dev_attr_groups)  in nvme_init_ctrl()
4878 		ctrl->device->groups = ops->dev_attr_groups;  in nvme_init_ctrl()
4880 		ctrl->device->groups = nvme_dev_attr_groups;  in nvme_init_ctrl()
4881 	ctrl->device->release = nvme_free_ctrl;  in nvme_init_ctrl()
4882 	dev_set_drvdata(ctrl->device, ctrl);  in nvme_init_ctrl()
4887 	ida_free(&nvme_instance_ida, ctrl->instance);  in nvme_init_ctrl()
4889 	if (ctrl->discard_page)  in nvme_init_ctrl()
4890 		__free_page(ctrl->discard_page);  in nvme_init_ctrl()
4891 	cleanup_srcu_struct(&ctrl->srcu);  in nvme_init_ctrl()
4898  * use nvme_uninit_ctrl() to properly free resources associated with the ctrl.
4900 int nvme_add_ctrl(struct nvme_ctrl *ctrl)  in nvme_add_ctrl()  argument
4904 	ret = dev_set_name(ctrl->device, "nvme%d", ctrl->instance);  in nvme_add_ctrl()
4908 	cdev_init(&ctrl->cdev, &nvme_dev_fops);  in nvme_add_ctrl()
4909 	ctrl->cdev.owner = ctrl->ops->module;  in nvme_add_ctrl()
4910 	ret = cdev_device_add(&ctrl->cdev, ctrl->device);  in nvme_add_ctrl()
4918 	ctrl->device->power.set_latency_tolerance = nvme_set_latency_tolerance;  in nvme_add_ctrl()
4919 	dev_pm_qos_update_user_latency_tolerance(ctrl->device,  in nvme_add_ctrl()
4922 	nvme_fault_inject_init(&ctrl->fault_inject, dev_name(ctrl->device));  in nvme_add_ctrl()
4923 	nvme_get_ctrl(ctrl);  in nvme_add_ctrl()
4930 void nvme_mark_namespaces_dead(struct nvme_ctrl *ctrl)  in nvme_mark_namespaces_dead()  argument
4935 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_mark_namespaces_dead()
4936 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_mark_namespaces_dead()
4937 				 srcu_read_lock_held(&ctrl->srcu))  in nvme_mark_namespaces_dead()
4938 		blk_mark_disk_dead(ns->disk);  in nvme_mark_namespaces_dead()
4939 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_mark_namespaces_dead()
4943 void nvme_unfreeze(struct nvme_ctrl *ctrl)  in nvme_unfreeze()  argument
4948 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_unfreeze()
4949 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_unfreeze()
4950 				 srcu_read_lock_held(&ctrl->srcu))  in nvme_unfreeze()
4951 		blk_mq_unfreeze_queue_non_owner(ns->queue);  in nvme_unfreeze()
4952 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_unfreeze()
4953 	clear_bit(NVME_CTRL_FROZEN, &ctrl->flags);  in nvme_unfreeze()
4957 int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout)  in nvme_wait_freeze_timeout()  argument
4962 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_wait_freeze_timeout()
4963 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_wait_freeze_timeout()
4964 				 srcu_read_lock_held(&ctrl->srcu)) {  in nvme_wait_freeze_timeout()
4965 		timeout = blk_mq_freeze_queue_wait_timeout(ns->queue, timeout);  in nvme_wait_freeze_timeout()
4969 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_wait_freeze_timeout()
4974 void nvme_wait_freeze(struct nvme_ctrl *ctrl)  in nvme_wait_freeze()  argument
4979 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_wait_freeze()
4980 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_wait_freeze()
4981 				 srcu_read_lock_held(&ctrl->srcu))  in nvme_wait_freeze()
4982 		blk_mq_freeze_queue_wait(ns->queue);  in nvme_wait_freeze()
4983 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_wait_freeze()
4987 void nvme_start_freeze(struct nvme_ctrl *ctrl)  in nvme_start_freeze()  argument
4992 	set_bit(NVME_CTRL_FROZEN, &ctrl->flags);  in nvme_start_freeze()
4993 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_start_freeze()
4994 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_start_freeze()
4995 				 srcu_read_lock_held(&ctrl->srcu))  in nvme_start_freeze()
5001 		blk_freeze_queue_start_non_owner(ns->queue);  in nvme_start_freeze()
5002 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_start_freeze()
5006 void nvme_quiesce_io_queues(struct nvme_ctrl *ctrl)  in nvme_quiesce_io_queues()  argument
5008 	if (!ctrl->tagset)  in nvme_quiesce_io_queues()
5010 	if (!test_and_set_bit(NVME_CTRL_STOPPED, &ctrl->flags))  in nvme_quiesce_io_queues()
5011 		blk_mq_quiesce_tagset(ctrl->tagset);  in nvme_quiesce_io_queues()
5013 		blk_mq_wait_quiesce_done(ctrl->tagset);  in nvme_quiesce_io_queues()
5017 void nvme_unquiesce_io_queues(struct nvme_ctrl *ctrl)  in nvme_unquiesce_io_queues()  argument
5019 	if (!ctrl->tagset)  in nvme_unquiesce_io_queues()
5021 	if (test_and_clear_bit(NVME_CTRL_STOPPED, &ctrl->flags))  in nvme_unquiesce_io_queues()
5022 		blk_mq_unquiesce_tagset(ctrl->tagset);  in nvme_unquiesce_io_queues()
5026 void nvme_quiesce_admin_queue(struct nvme_ctrl *ctrl)  in nvme_quiesce_admin_queue()  argument
5028 	if (!test_and_set_bit(NVME_CTRL_ADMIN_Q_STOPPED, &ctrl->flags))  in nvme_quiesce_admin_queue()
5029 		blk_mq_quiesce_queue(ctrl->admin_q);  in nvme_quiesce_admin_queue()
5031 		blk_mq_wait_quiesce_done(ctrl->admin_q->tag_set);  in nvme_quiesce_admin_queue()
5035 void nvme_unquiesce_admin_queue(struct nvme_ctrl *ctrl)  in nvme_unquiesce_admin_queue()  argument
5037 	if (test_and_clear_bit(NVME_CTRL_ADMIN_Q_STOPPED, &ctrl->flags))  in nvme_unquiesce_admin_queue()
5038 		blk_mq_unquiesce_queue(ctrl->admin_q);  in nvme_unquiesce_admin_queue()
5042 void nvme_sync_io_queues(struct nvme_ctrl *ctrl)  in nvme_sync_io_queues()  argument
5047 	srcu_idx = srcu_read_lock(&ctrl->srcu);  in nvme_sync_io_queues()
5048 	list_for_each_entry_srcu(ns, &ctrl->namespaces, list,  in nvme_sync_io_queues()
5049 				 srcu_read_lock_held(&ctrl->srcu))  in nvme_sync_io_queues()
5050 		blk_sync_queue(ns->queue);  in nvme_sync_io_queues()
5051 	srcu_read_unlock(&ctrl->srcu, srcu_idx);  in nvme_sync_io_queues()
5055 void nvme_sync_queues(struct nvme_ctrl *ctrl)  in nvme_sync_queues()  argument
5057 	nvme_sync_io_queues(ctrl);  in nvme_sync_queues()
5058 	if (ctrl->admin_q)  in nvme_sync_queues()
5059 		blk_sync_queue(ctrl->admin_q);  in nvme_sync_queues()
5065 	if (file->f_op != &nvme_dev_fops)  in nvme_ctrl_from_file()
5067 	return file->private_data;  in nvme_ctrl_from_file()
5108 	int result = -ENOMEM;  in nvme_core_init()
5112 	nvme_wq = alloc_workqueue("nvme-wq", wq_flags, 0);  in nvme_core_init()
5116 	nvme_reset_wq = alloc_workqueue("nvme-reset-wq", wq_flags, 0);  in nvme_core_init()
5120 	nvme_delete_wq = alloc_workqueue("nvme-delete-wq", wq_flags, 0);  in nvme_core_init()
5138 				     "nvme-generic");  in nvme_core_init()