diff options
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 86 |
1 files changed, 64 insertions, 22 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 07b34175c6ce..0015860ec12b 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -27,7 +27,6 @@ extern unsigned int admin_timeout; #define NVME_ADMIN_TIMEOUT (admin_timeout * HZ) #define NVME_DEFAULT_KATO 5 -#define NVME_KATO_GRACE 10 #ifdef CONFIG_ARCH_NO_SG_CHAIN #define NVME_INLINE_SG_CNT 0 @@ -276,6 +275,9 @@ struct nvme_ctrl { u32 max_hw_sectors; u32 max_segments; u32 max_integrity_segments; + u32 max_discard_sectors; + u32 max_discard_segments; + u32 max_zeroes_sectors; #ifdef CONFIG_BLK_DEV_ZONED u32 max_zone_append; #endif @@ -410,8 +412,12 @@ struct nvme_ns_head { bool shared; int instance; struct nvme_effects_log *effects; -#ifdef CONFIG_NVME_MULTIPATH + + struct cdev cdev; + struct device cdev_device; + struct gendisk *disk; +#ifdef CONFIG_NVME_MULTIPATH struct bio_list requeue_list; spinlock_t requeue_lock; struct work_struct requeue_work; @@ -422,6 +428,11 @@ struct nvme_ns_head { #endif }; +static inline bool nvme_ns_head_multipath(struct nvme_ns_head *head) +{ + return IS_ENABLED(CONFIG_NVME_MULTIPATH) && head->disk; +} + enum nvme_ns_features { NVME_NS_EXT_LBAS = 1 << 0, /* support extended LBA format */ NVME_NS_METADATA_SUPPORTED = 1 << 1, /* support getting generated md */ @@ -457,6 +468,9 @@ struct nvme_ns { #define NVME_NS_ANA_PENDING 2 #define NVME_NS_FORCE_RO 3 + struct cdev cdev; + struct device cdev_device; + struct nvme_fault_inject fault_inject; }; @@ -599,7 +613,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev, void nvme_uninit_ctrl(struct nvme_ctrl *ctrl); void nvme_start_ctrl(struct nvme_ctrl *ctrl); void nvme_stop_ctrl(struct nvme_ctrl *ctrl); -int nvme_init_identify(struct nvme_ctrl *ctrl); +int nvme_init_ctrl_finish(struct nvme_ctrl *ctrl); void nvme_remove_namespaces(struct nvme_ctrl *ctrl); @@ -623,8 +637,22 @@ void nvme_start_freeze(struct nvme_ctrl *ctrl); struct request *nvme_alloc_request(struct request_queue *q, struct nvme_command *cmd, blk_mq_req_flags_t flags); void nvme_cleanup_cmd(struct request *req); -blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req, - struct nvme_command *cmd); +blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req); +blk_status_t nvme_fail_nonready_command(struct nvme_ctrl *ctrl, + struct request *req); +bool __nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq, + bool queue_live); + +static inline bool nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq, + bool queue_live) +{ + if (likely(ctrl->state == NVME_CTRL_LIVE)) + return true; + if (ctrl->ops->flags & NVME_F_FABRICS && + ctrl->state == NVME_CTRL_DELETING) + return true; + return __nvme_check_ready(ctrl, rq, queue_live); +} int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, void *buf, unsigned bufflen); int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, @@ -640,16 +668,33 @@ int nvme_get_features(struct nvme_ctrl *dev, unsigned int fid, int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count); void nvme_stop_keep_alive(struct nvme_ctrl *ctrl); int nvme_reset_ctrl(struct nvme_ctrl *ctrl); +int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl); int nvme_try_sched_reset(struct nvme_ctrl *ctrl); int nvme_delete_ctrl(struct nvme_ctrl *ctrl); - +void nvme_queue_scan(struct nvme_ctrl *ctrl); int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp, u8 csi, void *log, size_t size, u64 offset); struct nvme_ns *nvme_get_ns_from_disk(struct gendisk *disk, struct nvme_ns_head **head, int *srcu_idx); void nvme_put_ns_from_disk(struct nvme_ns_head *head, int idx); +bool nvme_tryget_ns_head(struct nvme_ns_head *head); +void nvme_put_ns_head(struct nvme_ns_head *head); +int nvme_cdev_add(struct cdev *cdev, struct device *cdev_device, + const struct file_operations *fops, struct module *owner); +void nvme_cdev_del(struct cdev *cdev, struct device *cdev_device); +int nvme_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg); +long nvme_ns_chr_ioctl(struct file *file, unsigned int cmd, unsigned long arg); +int nvme_ns_head_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg); +long nvme_ns_head_chr_ioctl(struct file *file, unsigned int cmd, + unsigned long arg); +long nvme_dev_ioctl(struct file *file, unsigned int cmd, + unsigned long arg); +int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo); extern const struct attribute_group *nvme_ns_id_attr_groups[]; +extern const struct pr_ops nvme_pr_ops; extern const struct block_device_operations nvme_ns_head_ops; #ifdef CONFIG_NVME_MULTIPATH @@ -661,20 +706,19 @@ static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl) void nvme_mpath_unfreeze(struct nvme_subsystem *subsys); void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys); void nvme_mpath_start_freeze(struct nvme_subsystem *subsys); -void nvme_set_disk_name(char *disk_name, struct nvme_ns *ns, - struct nvme_ctrl *ctrl, int *flags); +bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, int *flags); void nvme_failover_req(struct request *req); void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl); int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head); void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id); void nvme_mpath_remove_disk(struct nvme_ns_head *head); -int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id); +int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id); +void nvme_mpath_init_ctrl(struct nvme_ctrl *ctrl); void nvme_mpath_uninit(struct nvme_ctrl *ctrl); void nvme_mpath_stop(struct nvme_ctrl *ctrl); bool nvme_mpath_clear_current_path(struct nvme_ns *ns); void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl); struct nvme_ns *nvme_find_path(struct nvme_ns_head *head); -blk_qc_t nvme_ns_head_submit_bio(struct bio *bio); static inline void nvme_mpath_check_last_path(struct nvme_ns *ns) { @@ -701,16 +745,11 @@ static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl) { return false; } -/* - * Without the multipath code enabled, multiple controller per subsystems are - * visible as devices and thus we cannot use the subsystem instance. - */ -static inline void nvme_set_disk_name(char *disk_name, struct nvme_ns *ns, - struct nvme_ctrl *ctrl, int *flags) +static inline bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, + int *flags) { - sprintf(disk_name, "nvme%dn%d", ctrl->instance, ns->head->instance); + return false; } - static inline void nvme_failover_req(struct request *req) { } @@ -742,10 +781,13 @@ static inline void nvme_mpath_check_last_path(struct nvme_ns *ns) static inline void nvme_trace_bio_complete(struct request *req) { } -static inline int nvme_mpath_init(struct nvme_ctrl *ctrl, +static inline void nvme_mpath_init_ctrl(struct nvme_ctrl *ctrl) +{ +} +static inline int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id) { - if (ctrl->subsys->cmic & (1 << 3)) + if (ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA) dev_warn(ctrl->device, "Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n"); return 0; @@ -798,7 +840,7 @@ static inline int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf) int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node); void nvme_nvm_unregister(struct nvme_ns *ns); extern const struct attribute_group nvme_nvm_attr_group; -int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg); +int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, void __user *argp); #else static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node) @@ -808,7 +850,7 @@ static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, static inline void nvme_nvm_unregister(struct nvme_ns *ns) {}; static inline int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, - unsigned long arg) + void __user *argp) { return -ENOTTY; } |