1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2011-2014, Intel Corporation.
9 #include <linux/nvme.h>
10 #include <linux/cdev.h>
11 #include <linux/pci.h>
12 #include <linux/kref.h>
13 #include <linux/blk-mq.h>
14 #include <linux/lightnvm.h>
15 #include <linux/sed-opal.h>
16 #include <linux/fault-inject.h>
17 #include <linux/rcupdate.h>
18 #include <linux/wait.h>
19 #include <linux/t10-pi.h>
21 #include <trace/events/block.h>
23 extern unsigned int nvme_io_timeout;
24 #define NVME_IO_TIMEOUT (nvme_io_timeout * HZ)
26 extern unsigned int admin_timeout;
27 #define NVME_ADMIN_TIMEOUT (admin_timeout * HZ)
29 #define NVME_DEFAULT_KATO 5
31 #ifdef CONFIG_ARCH_NO_SG_CHAIN
32 #define NVME_INLINE_SG_CNT 0
33 #define NVME_INLINE_METADATA_SG_CNT 0
35 #define NVME_INLINE_SG_CNT 2
36 #define NVME_INLINE_METADATA_SG_CNT 1
40 * Default to a 4K page size, with the intention to update this
41 * path in the future to accommodate architectures with differing
42 * kernel and IO page sizes.
44 #define NVME_CTRL_PAGE_SHIFT 12
45 #define NVME_CTRL_PAGE_SIZE (1 << NVME_CTRL_PAGE_SHIFT)
47 extern struct workqueue_struct *nvme_wq;
48 extern struct workqueue_struct *nvme_reset_wq;
49 extern struct workqueue_struct *nvme_delete_wq;
57 * List of workarounds for devices that required behavior not specified in
62 * Prefers I/O aligned to a stripe size specified in a vendor
63 * specific Identify field.
65 NVME_QUIRK_STRIPE_SIZE = (1 << 0),
68 * The controller doesn't handle Identify value others than 0 or 1
71 NVME_QUIRK_IDENTIFY_CNS = (1 << 1),
74 * The controller deterministically returns O's on reads to
75 * logical blocks that deallocate was called on.
77 NVME_QUIRK_DEALLOCATE_ZEROES = (1 << 2),
80 * The controller needs a delay before starts checking the device
81 * readiness, which is done by reading the NVME_CSTS_RDY bit.
83 NVME_QUIRK_DELAY_BEFORE_CHK_RDY = (1 << 3),
86 * APST should not be used.
88 NVME_QUIRK_NO_APST = (1 << 4),
91 * The deepest sleep state should not be used.
93 NVME_QUIRK_NO_DEEPEST_PS = (1 << 5),
96 * Supports the LighNVM command set if indicated in vs[1].
98 NVME_QUIRK_LIGHTNVM = (1 << 6),
101 * Set MEDIUM priority on SQ creation
103 NVME_QUIRK_MEDIUM_PRIO_SQ = (1 << 7),
106 * Ignore device provided subnqn.
108 NVME_QUIRK_IGNORE_DEV_SUBNQN = (1 << 8),
111 * Broken Write Zeroes.
113 NVME_QUIRK_DISABLE_WRITE_ZEROES = (1 << 9),
116 * Force simple suspend/resume path.
118 NVME_QUIRK_SIMPLE_SUSPEND = (1 << 10),
121 * Use only one interrupt vector for all queues
123 NVME_QUIRK_SINGLE_VECTOR = (1 << 11),
126 * Use non-standard 128 bytes SQEs.
128 NVME_QUIRK_128_BYTES_SQES = (1 << 12),
131 * Prevent tag overlap between queues
133 NVME_QUIRK_SHARED_TAGS = (1 << 13),
136 * Don't change the value of the temperature threshold feature
138 NVME_QUIRK_NO_TEMP_THRESH_CHANGE = (1 << 14),
141 * The controller doesn't handle the Identify Namespace
142 * Identification Descriptor list subcommand despite claiming
143 * NVMe 1.3 compliance.
145 NVME_QUIRK_NO_NS_DESC_LIST = (1 << 15),
148 * The controller does not properly handle DMA addresses over
151 NVME_QUIRK_DMA_ADDRESS_BITS_48 = (1 << 16),
155 * Common request structure for NVMe passthrough. All drivers must have
156 * this structure as the first member of their request-private data.
158 struct nvme_request {
159 struct nvme_command *cmd;
160 union nvme_result result;
164 struct nvme_ctrl *ctrl;
168 * Mark a bio as coming in through the mpath node.
170 #define REQ_NVME_MPATH REQ_DRV
173 NVME_REQ_CANCELLED = (1 << 0),
174 NVME_REQ_USERCMD = (1 << 1),
177 static inline struct nvme_request *nvme_req(struct request *req)
179 return blk_mq_rq_to_pdu(req);
182 static inline u16 nvme_req_qid(struct request *req)
184 if (!req->q->queuedata)
187 return req->mq_hctx->queue_num + 1;
190 /* The below value is the specific amount of delay needed before checking
191 * readiness in case of the PCI_DEVICE(0x1c58, 0x0003), which needs the
192 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY quirk enabled. The value (in ms) was
195 #define NVME_QUIRK_DELAY_AMOUNT 2300
198 * enum nvme_ctrl_state: Controller state
200 * @NVME_CTRL_NEW: New controller just allocated, initial state
201 * @NVME_CTRL_LIVE: Controller is connected and I/O capable
202 * @NVME_CTRL_RESETTING: Controller is resetting (or scheduled reset)
203 * @NVME_CTRL_CONNECTING: Controller is disconnected, now connecting the
205 * @NVME_CTRL_DELETING: Controller is deleting (or scheduled deletion)
206 * @NVME_CTRL_DELETING_NOIO: Controller is deleting and I/O is not
207 * disabled/failed immediately. This state comes
208 * after all async event processing took place and
209 * before ns removal and the controller deletion
211 * @NVME_CTRL_DEAD: Controller is non-present/unresponsive during
212 * shutdown or removal. In this case we forcibly
213 * kill all inflight I/O as they have no chance to
216 enum nvme_ctrl_state {
220 NVME_CTRL_CONNECTING,
222 NVME_CTRL_DELETING_NOIO,
226 struct nvme_fault_inject {
227 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
228 struct fault_attr attr;
229 struct dentry *parent;
230 bool dont_retry; /* DNR, do not retry */
231 u16 status; /* status code */
237 enum nvme_ctrl_state state;
240 struct mutex scan_lock;
241 const struct nvme_ctrl_ops *ops;
242 struct request_queue *admin_q;
243 struct request_queue *connect_q;
244 struct request_queue *fabrics_q;
248 struct blk_mq_tag_set *tagset;
249 struct blk_mq_tag_set *admin_tagset;
250 struct list_head namespaces;
251 struct rw_semaphore namespaces_rwsem;
252 struct device ctrl_device;
253 struct device *device; /* char device */
254 #ifdef CONFIG_NVME_HWMON
255 struct device *hwmon_device;
258 struct work_struct reset_work;
259 struct work_struct delete_work;
260 wait_queue_head_t state_wq;
262 struct nvme_subsystem *subsys;
263 struct list_head subsys_entry;
265 struct opal_dev *opal_dev;
277 u32 max_integrity_segments;
278 u32 max_discard_sectors;
279 u32 max_discard_segments;
280 u32 max_zeroes_sectors;
281 #ifdef CONFIG_BLK_DEV_ZONED
291 atomic_t abort_limit;
303 unsigned int shutdown_timeout;
306 unsigned long quirks;
307 struct nvme_id_power_state psd[32];
308 struct nvme_effects_log *effects;
310 struct work_struct scan_work;
311 struct work_struct async_event_work;
312 struct delayed_work ka_work;
313 struct delayed_work failfast_work;
314 struct nvme_command ka_cmd;
315 struct work_struct fw_act_work;
316 unsigned long events;
318 #ifdef CONFIG_NVME_MULTIPATH
319 /* asymmetric namespace access: */
324 struct mutex ana_lock;
325 struct nvme_ana_rsp_hdr *ana_log_buf;
327 struct timer_list anatt_timer;
328 struct work_struct ana_work;
331 /* Power saving configuration */
332 u64 ps_max_latency_us;
348 #define NVME_CTRL_FAILFAST_EXPIRED 0
349 struct nvmf_ctrl_options *opts;
351 struct page *discard_page;
352 unsigned long discard_page_busy;
354 struct nvme_fault_inject fault_inject;
362 struct nvme_subsystem {
366 * Because we unregister the device on the last put we need
367 * a separate refcount.
370 struct list_head entry;
372 struct list_head ctrls;
373 struct list_head nsheads;
374 char subnqn[NVMF_NQN_SIZE];
377 char firmware_rev[8];
380 u16 awupf; /* 0's based awupf value. */
382 #ifdef CONFIG_NVME_MULTIPATH
383 enum nvme_iopolicy iopolicy;
388 * Container structure for uniqueue namespace identifiers.
398 * Anchor structure for namespaces. There is one for each namespace in a
399 * NVMe subsystem that any of our controllers can see, and the namespace
400 * structure for each controller is chained of it. For private namespaces
401 * there is a 1:1 relation to our namespace structures, that is ->list
402 * only ever has a single entry for private namespaces.
404 struct nvme_ns_head {
405 struct list_head list;
406 struct srcu_struct srcu;
407 struct nvme_subsystem *subsys;
409 struct nvme_ns_ids ids;
410 struct list_head entry;
414 struct nvme_effects_log *effects;
417 struct device cdev_device;
419 struct gendisk *disk;
420 #ifdef CONFIG_NVME_MULTIPATH
421 struct bio_list requeue_list;
422 spinlock_t requeue_lock;
423 struct work_struct requeue_work;
426 #define NVME_NSHEAD_DISK_LIVE 0
427 struct nvme_ns __rcu *current_path[];
431 static inline bool nvme_ns_head_multipath(struct nvme_ns_head *head)
433 return IS_ENABLED(CONFIG_NVME_MULTIPATH) && head->disk;
436 enum nvme_ns_features {
437 NVME_NS_EXT_LBAS = 1 << 0, /* support extended LBA format */
438 NVME_NS_METADATA_SUPPORTED = 1 << 1, /* support getting generated md */
442 struct list_head list;
444 struct nvme_ctrl *ctrl;
445 struct request_queue *queue;
446 struct gendisk *disk;
447 #ifdef CONFIG_NVME_MULTIPATH
448 enum nvme_ana_state ana_state;
451 struct list_head siblings;
452 struct nvm_dev *ndev;
454 struct nvme_ns_head *head;
461 #ifdef CONFIG_BLK_DEV_ZONED
464 unsigned long features;
466 #define NVME_NS_REMOVING 0
467 #define NVME_NS_DEAD 1
468 #define NVME_NS_ANA_PENDING 2
469 #define NVME_NS_FORCE_RO 3
472 struct device cdev_device;
474 struct nvme_fault_inject fault_inject;
478 /* NVMe ns supports metadata actions by the controller (generate/strip) */
479 static inline bool nvme_ns_has_pi(struct nvme_ns *ns)
481 return ns->pi_type && ns->ms == sizeof(struct t10_pi_tuple);
484 struct nvme_ctrl_ops {
486 struct module *module;
488 #define NVME_F_FABRICS (1 << 0)
489 #define NVME_F_METADATA_SUPPORTED (1 << 1)
490 #define NVME_F_PCI_P2PDMA (1 << 2)
491 int (*reg_read32)(struct nvme_ctrl *ctrl, u32 off, u32 *val);
492 int (*reg_write32)(struct nvme_ctrl *ctrl, u32 off, u32 val);
493 int (*reg_read64)(struct nvme_ctrl *ctrl, u32 off, u64 *val);
494 void (*free_ctrl)(struct nvme_ctrl *ctrl);
495 void (*submit_async_event)(struct nvme_ctrl *ctrl);
496 void (*delete_ctrl)(struct nvme_ctrl *ctrl);
497 int (*get_address)(struct nvme_ctrl *ctrl, char *buf, int size);
500 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
501 void nvme_fault_inject_init(struct nvme_fault_inject *fault_inj,
502 const char *dev_name);
503 void nvme_fault_inject_fini(struct nvme_fault_inject *fault_inject);
504 void nvme_should_fail(struct request *req);
506 static inline void nvme_fault_inject_init(struct nvme_fault_inject *fault_inj,
507 const char *dev_name)
510 static inline void nvme_fault_inject_fini(struct nvme_fault_inject *fault_inj)
513 static inline void nvme_should_fail(struct request *req) {}
516 static inline int nvme_reset_subsystem(struct nvme_ctrl *ctrl)
518 if (!ctrl->subsystem)
520 return ctrl->ops->reg_write32(ctrl, NVME_REG_NSSR, 0x4E564D65);
524 * Convert a 512B sector number to a device logical block number.
526 static inline u64 nvme_sect_to_lba(struct nvme_ns *ns, sector_t sector)
528 return sector >> (ns->lba_shift - SECTOR_SHIFT);
532 * Convert a device logical block number to a 512B sector number.
534 static inline sector_t nvme_lba_to_sect(struct nvme_ns *ns, u64 lba)
536 return lba << (ns->lba_shift - SECTOR_SHIFT);
540 * Convert byte length to nvme's 0-based num dwords
542 static inline u32 nvme_bytes_to_numd(size_t len)
544 return (len >> 2) - 1;
547 static inline bool nvme_is_ana_error(u16 status)
549 switch (status & 0x7ff) {
550 case NVME_SC_ANA_TRANSITION:
551 case NVME_SC_ANA_INACCESSIBLE:
552 case NVME_SC_ANA_PERSISTENT_LOSS:
559 static inline bool nvme_is_path_error(u16 status)
561 /* check for a status code type of 'path related status' */
562 return (status & 0x700) == 0x300;
566 * Fill in the status and result information from the CQE, and then figure out
567 * if blk-mq will need to use IPI magic to complete the request, and if yes do
568 * so. If not let the caller complete the request without an indirect function
571 static inline bool nvme_try_complete_req(struct request *req, __le16 status,
572 union nvme_result result)
574 struct nvme_request *rq = nvme_req(req);
576 rq->status = le16_to_cpu(status) >> 1;
578 /* inject error when permitted by fault injection framework */
579 nvme_should_fail(req);
580 if (unlikely(blk_should_fake_timeout(req->q)))
582 return blk_mq_complete_request_remote(req);
585 static inline void nvme_get_ctrl(struct nvme_ctrl *ctrl)
587 get_device(ctrl->device);
590 static inline void nvme_put_ctrl(struct nvme_ctrl *ctrl)
592 put_device(ctrl->device);
595 static inline bool nvme_is_aen_req(u16 qid, __u16 command_id)
597 return !qid && command_id >= NVME_AQ_BLK_MQ_DEPTH;
600 void nvme_complete_rq(struct request *req);
601 blk_status_t nvme_host_path_error(struct request *req);
602 bool nvme_cancel_request(struct request *req, void *data, bool reserved);
603 void nvme_cancel_tagset(struct nvme_ctrl *ctrl);
604 void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl);
605 bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
606 enum nvme_ctrl_state new_state);
607 bool nvme_wait_reset(struct nvme_ctrl *ctrl);
608 int nvme_disable_ctrl(struct nvme_ctrl *ctrl);
609 int nvme_enable_ctrl(struct nvme_ctrl *ctrl);
610 int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl);
611 int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
612 const struct nvme_ctrl_ops *ops, unsigned long quirks);
613 void nvme_uninit_ctrl(struct nvme_ctrl *ctrl);
614 void nvme_start_ctrl(struct nvme_ctrl *ctrl);
615 void nvme_stop_ctrl(struct nvme_ctrl *ctrl);
616 int nvme_init_ctrl_finish(struct nvme_ctrl *ctrl);
618 void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
620 int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len,
623 void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
624 volatile union nvme_result *res);
626 void nvme_stop_queues(struct nvme_ctrl *ctrl);
627 void nvme_start_queues(struct nvme_ctrl *ctrl);
628 void nvme_kill_queues(struct nvme_ctrl *ctrl);
629 void nvme_sync_queues(struct nvme_ctrl *ctrl);
630 void nvme_sync_io_queues(struct nvme_ctrl *ctrl);
631 void nvme_unfreeze(struct nvme_ctrl *ctrl);
632 void nvme_wait_freeze(struct nvme_ctrl *ctrl);
633 int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout);
634 void nvme_start_freeze(struct nvme_ctrl *ctrl);
636 #define NVME_QID_ANY -1
637 struct request *nvme_alloc_request(struct request_queue *q,
638 struct nvme_command *cmd, blk_mq_req_flags_t flags);
639 void nvme_cleanup_cmd(struct request *req);
640 blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req);
641 blk_status_t nvme_fail_nonready_command(struct nvme_ctrl *ctrl,
642 struct request *req);
643 bool __nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
646 static inline bool nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
649 if (likely(ctrl->state == NVME_CTRL_LIVE))
651 if (ctrl->ops->flags & NVME_F_FABRICS &&
652 ctrl->state == NVME_CTRL_DELETING)
654 return __nvme_check_ready(ctrl, rq, queue_live);
656 int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
657 void *buf, unsigned bufflen);
658 int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
659 union nvme_result *result, void *buffer, unsigned bufflen,
660 unsigned timeout, int qid, int at_head,
661 blk_mq_req_flags_t flags);
662 int nvme_set_features(struct nvme_ctrl *dev, unsigned int fid,
663 unsigned int dword11, void *buffer, size_t buflen,
665 int nvme_get_features(struct nvme_ctrl *dev, unsigned int fid,
666 unsigned int dword11, void *buffer, size_t buflen,
668 int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count);
669 void nvme_stop_keep_alive(struct nvme_ctrl *ctrl);
670 int nvme_reset_ctrl(struct nvme_ctrl *ctrl);
671 int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl);
672 int nvme_try_sched_reset(struct nvme_ctrl *ctrl);
673 int nvme_delete_ctrl(struct nvme_ctrl *ctrl);
674 void nvme_queue_scan(struct nvme_ctrl *ctrl);
675 int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp, u8 csi,
676 void *log, size_t size, u64 offset);
677 bool nvme_tryget_ns_head(struct nvme_ns_head *head);
678 void nvme_put_ns_head(struct nvme_ns_head *head);
679 int nvme_cdev_add(struct cdev *cdev, struct device *cdev_device,
680 const struct file_operations *fops, struct module *owner);
681 void nvme_cdev_del(struct cdev *cdev, struct device *cdev_device);
682 int nvme_ioctl(struct block_device *bdev, fmode_t mode,
683 unsigned int cmd, unsigned long arg);
684 long nvme_ns_chr_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
685 int nvme_ns_head_ioctl(struct block_device *bdev, fmode_t mode,
686 unsigned int cmd, unsigned long arg);
687 long nvme_ns_head_chr_ioctl(struct file *file, unsigned int cmd,
689 long nvme_dev_ioctl(struct file *file, unsigned int cmd,
691 int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo);
693 extern const struct attribute_group *nvme_ns_id_attr_groups[];
694 extern const struct pr_ops nvme_pr_ops;
695 extern const struct block_device_operations nvme_ns_head_ops;
697 struct nvme_ns *nvme_find_path(struct nvme_ns_head *head);
698 #ifdef CONFIG_NVME_MULTIPATH
699 static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl)
701 return ctrl->ana_log_buf != NULL;
704 void nvme_mpath_unfreeze(struct nvme_subsystem *subsys);
705 void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys);
706 void nvme_mpath_start_freeze(struct nvme_subsystem *subsys);
707 bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, int *flags);
708 void nvme_failover_req(struct request *req);
709 void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl);
710 int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head);
711 void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id);
712 void nvme_mpath_remove_disk(struct nvme_ns_head *head);
713 int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id);
714 void nvme_mpath_init_ctrl(struct nvme_ctrl *ctrl);
715 void nvme_mpath_uninit(struct nvme_ctrl *ctrl);
716 void nvme_mpath_stop(struct nvme_ctrl *ctrl);
717 bool nvme_mpath_clear_current_path(struct nvme_ns *ns);
718 void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl);
719 void nvme_mpath_shutdown_disk(struct nvme_ns_head *head);
721 static inline void nvme_trace_bio_complete(struct request *req)
723 struct nvme_ns *ns = req->q->queuedata;
725 if (req->cmd_flags & REQ_NVME_MPATH)
726 trace_block_bio_complete(ns->head->disk->queue, req->bio);
729 extern struct device_attribute dev_attr_ana_grpid;
730 extern struct device_attribute dev_attr_ana_state;
731 extern struct device_attribute subsys_attr_iopolicy;
734 static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl)
738 static inline bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name,
743 static inline void nvme_failover_req(struct request *req)
746 static inline void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl)
749 static inline int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,
750 struct nvme_ns_head *head)
754 static inline void nvme_mpath_add_disk(struct nvme_ns *ns,
755 struct nvme_id_ns *id)
758 static inline void nvme_mpath_remove_disk(struct nvme_ns_head *head)
761 static inline bool nvme_mpath_clear_current_path(struct nvme_ns *ns)
765 static inline void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl)
768 static inline void nvme_mpath_shutdown_disk(struct nvme_ns_head *head)
771 static inline void nvme_trace_bio_complete(struct request *req)
774 static inline void nvme_mpath_init_ctrl(struct nvme_ctrl *ctrl)
777 static inline int nvme_mpath_init_identify(struct nvme_ctrl *ctrl,
778 struct nvme_id_ctrl *id)
780 if (ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA)
781 dev_warn(ctrl->device,
782 "Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");
785 static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)
788 static inline void nvme_mpath_stop(struct nvme_ctrl *ctrl)
791 static inline void nvme_mpath_unfreeze(struct nvme_subsystem *subsys)
794 static inline void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys)
797 static inline void nvme_mpath_start_freeze(struct nvme_subsystem *subsys)
800 #endif /* CONFIG_NVME_MULTIPATH */
802 int nvme_revalidate_zones(struct nvme_ns *ns);
803 int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
804 unsigned int nr_zones, report_zones_cb cb, void *data);
805 #ifdef CONFIG_BLK_DEV_ZONED
806 int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf);
807 blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns, struct request *req,
808 struct nvme_command *cmnd,
809 enum nvme_zone_mgmt_action action);
811 static inline blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns,
812 struct request *req, struct nvme_command *cmnd,
813 enum nvme_zone_mgmt_action action)
815 return BLK_STS_NOTSUPP;
818 static inline int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
820 dev_warn(ns->ctrl->device,
821 "Please enable CONFIG_BLK_DEV_ZONED to support ZNS devices\n");
822 return -EPROTONOSUPPORT;
827 int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
828 void nvme_nvm_unregister(struct nvme_ns *ns);
829 extern const struct attribute_group nvme_nvm_attr_group;
830 int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, void __user *argp);
832 static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
838 static inline void nvme_nvm_unregister(struct nvme_ns *ns) {};
839 static inline int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd,
844 #endif /* CONFIG_NVM */
846 static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev)
848 return dev_to_disk(dev)->private_data;
851 #ifdef CONFIG_NVME_HWMON
852 int nvme_hwmon_init(struct nvme_ctrl *ctrl);
853 void nvme_hwmon_exit(struct nvme_ctrl *ctrl);
855 static inline int nvme_hwmon_init(struct nvme_ctrl *ctrl)
860 static inline void nvme_hwmon_exit(struct nvme_ctrl *ctrl)
865 static inline bool nvme_ctrl_sgl_supported(struct nvme_ctrl *ctrl)
867 return ctrl->sgls & ((1 << 0) | (1 << 1));
870 u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
872 int nvme_execute_passthru_rq(struct request *rq);
873 struct nvme_ctrl *nvme_ctrl_from_file(struct file *file);
874 struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid);
875 void nvme_put_ns(struct nvme_ns *ns);