nvme.h (1e05a7e6ebc4a5a5c53dce32e7e6d0ff5e7e08d1) nvme.h (c0f2f45be2976abe973c8cd544f38e2d928771b0)
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2011-2014, Intel Corporation.
4 */
5
6#ifndef _NVME_H
7#define _NVME_H
8

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87 * Ignore device provided subnqn.
88 */
89 NVME_QUIRK_IGNORE_DEV_SUBNQN = (1 << 8),
90
91 /*
92 * Broken Write Zeroes.
93 */
94 NVME_QUIRK_DISABLE_WRITE_ZEROES = (1 << 9),
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2011-2014, Intel Corporation.
4 */
5
6#ifndef _NVME_H
7#define _NVME_H
8

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87 * Ignore device provided subnqn.
88 */
89 NVME_QUIRK_IGNORE_DEV_SUBNQN = (1 << 8),
90
91 /*
92 * Broken Write Zeroes.
93 */
94 NVME_QUIRK_DISABLE_WRITE_ZEROES = (1 << 9),
95
96 /*
97 * Force simple suspend/resume path.
98 */
99 NVME_QUIRK_SIMPLE_SUSPEND = (1 << 10),
100};
101
102/*
103 * Common request structure for NVMe passthrough. All drivers must have
104 * this structure as the first member of their request-private data.
105 */
106struct nvme_request {
107 struct nvme_command *cmd;

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427 put_device(ctrl->device);
428}
429
430void nvme_complete_rq(struct request *req);
431bool nvme_cancel_request(struct request *req, void *data, bool reserved);
432bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
433 enum nvme_ctrl_state new_state);
434int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap);
95};
96
97/*
98 * Common request structure for NVMe passthrough. All drivers must have
99 * this structure as the first member of their request-private data.
100 */
101struct nvme_request {
102 struct nvme_command *cmd;

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422 put_device(ctrl->device);
423}
424
425void nvme_complete_rq(struct request *req);
426bool nvme_cancel_request(struct request *req, void *data, bool reserved);
427bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
428 enum nvme_ctrl_state new_state);
429int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap);
435int nvme_enable_ctrl(struct nvme_ctrl *ctrl, u64 cap);
430int nvme_enable_ctrl(struct nvme_ctrl *ctrl);
436int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl);
437int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
438 const struct nvme_ctrl_ops *ops, unsigned long quirks);
439void nvme_uninit_ctrl(struct nvme_ctrl *ctrl);
440void nvme_start_ctrl(struct nvme_ctrl *ctrl);
441void nvme_stop_ctrl(struct nvme_ctrl *ctrl);
442void nvme_put_ctrl(struct nvme_ctrl *ctrl);
443int nvme_init_identify(struct nvme_ctrl *ctrl);

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490extern const struct block_device_operations nvme_ns_head_ops;
491
492#ifdef CONFIG_NVME_MULTIPATH
493static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl)
494{
495 return ctrl->ana_log_buf != NULL;
496}
497
431int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl);
432int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
433 const struct nvme_ctrl_ops *ops, unsigned long quirks);
434void nvme_uninit_ctrl(struct nvme_ctrl *ctrl);
435void nvme_start_ctrl(struct nvme_ctrl *ctrl);
436void nvme_stop_ctrl(struct nvme_ctrl *ctrl);
437void nvme_put_ctrl(struct nvme_ctrl *ctrl);
438int nvme_init_identify(struct nvme_ctrl *ctrl);

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485extern const struct block_device_operations nvme_ns_head_ops;
486
487#ifdef CONFIG_NVME_MULTIPATH
488static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl)
489{
490 return ctrl->ana_log_buf != NULL;
491}
492
498void nvme_mpath_unfreeze(struct nvme_subsystem *subsys);
499void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys);
500void nvme_mpath_start_freeze(struct nvme_subsystem *subsys);
501void nvme_set_disk_name(char *disk_name, struct nvme_ns *ns,
502 struct nvme_ctrl *ctrl, int *flags);
503void nvme_failover_req(struct request *req);
504void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl);
505int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head);
506void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id);
507void nvme_mpath_remove_disk(struct nvme_ns_head *head);
508int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id);
509void nvme_mpath_uninit(struct nvme_ctrl *ctrl);
510void nvme_mpath_stop(struct nvme_ctrl *ctrl);
493void nvme_set_disk_name(char *disk_name, struct nvme_ns *ns,
494 struct nvme_ctrl *ctrl, int *flags);
495void nvme_failover_req(struct request *req);
496void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl);
497int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head);
498void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id);
499void nvme_mpath_remove_disk(struct nvme_ns_head *head);
500int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id);
501void nvme_mpath_uninit(struct nvme_ctrl *ctrl);
502void nvme_mpath_stop(struct nvme_ctrl *ctrl);
511bool nvme_mpath_clear_current_path(struct nvme_ns *ns);
512void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl);
503void nvme_mpath_clear_current_path(struct nvme_ns *ns);
513struct nvme_ns *nvme_find_path(struct nvme_ns_head *head);
514
515static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
516{
517 struct nvme_ns_head *head = ns->head;
518
519 if (head->disk && list_empty(&head->list))
520 kblockd_schedule_work(&head->requeue_work);

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552}
553static inline void nvme_mpath_add_disk(struct nvme_ns *ns,
554 struct nvme_id_ns *id)
555{
556}
557static inline void nvme_mpath_remove_disk(struct nvme_ns_head *head)
558{
559}
504struct nvme_ns *nvme_find_path(struct nvme_ns_head *head);
505
506static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
507{
508 struct nvme_ns_head *head = ns->head;
509
510 if (head->disk && list_empty(&head->list))
511 kblockd_schedule_work(&head->requeue_work);

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543}
544static inline void nvme_mpath_add_disk(struct nvme_ns *ns,
545 struct nvme_id_ns *id)
546{
547}
548static inline void nvme_mpath_remove_disk(struct nvme_ns_head *head)
549{
550}
560static inline bool nvme_mpath_clear_current_path(struct nvme_ns *ns)
551static inline void nvme_mpath_clear_current_path(struct nvme_ns *ns)
561{
552{
562 return false;
563}
553}
564static inline void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl)
565{
566}
567static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
568{
569}
570static inline int nvme_mpath_init(struct nvme_ctrl *ctrl,
571 struct nvme_id_ctrl *id)
572{
573 if (ctrl->subsys->cmic & (1 << 3))
574 dev_warn(ctrl->device,
575"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");
576 return 0;
577}
578static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)
579{
580}
581static inline void nvme_mpath_stop(struct nvme_ctrl *ctrl)
582{
583}
554static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
555{
556}
557static inline int nvme_mpath_init(struct nvme_ctrl *ctrl,
558 struct nvme_id_ctrl *id)
559{
560 if (ctrl->subsys->cmic & (1 << 3))
561 dev_warn(ctrl->device,
562"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");
563 return 0;
564}
565static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)
566{
567}
568static inline void nvme_mpath_stop(struct nvme_ctrl *ctrl)
569{
570}
584static inline void nvme_mpath_unfreeze(struct nvme_subsystem *subsys)
585{
586}
587static inline void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys)
588{
589}
590static inline void nvme_mpath_start_freeze(struct nvme_subsystem *subsys)
591{
592}
593#endif /* CONFIG_NVME_MULTIPATH */
594
595#ifdef CONFIG_NVM
596int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
597void nvme_nvm_unregister(struct nvme_ns *ns);
598extern const struct attribute_group nvme_nvm_attr_group;
599int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg);
600#else

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572
573#ifdef CONFIG_NVM
574int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
575void nvme_nvm_unregister(struct nvme_ns *ns);
576extern const struct attribute_group nvme_nvm_attr_group;
577int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg);
578#else

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