diff options
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 48 |
1 files changed, 45 insertions, 3 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 4d196d2d57da..ab18b78102bf 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -38,6 +38,11 @@ extern unsigned char admin_timeout; extern unsigned char shutdown_timeout; #define SHUTDOWN_TIMEOUT (shutdown_timeout * HZ) +#define NVME_DEFAULT_KATO 5 +#define NVME_KATO_GRACE 10 + +extern unsigned int nvme_max_retries; + enum { NVME_NS_LBA = 0, NVME_NS_LIGHTNVM = 1, @@ -65,12 +70,26 @@ enum nvme_quirks { * logical blocks. */ NVME_QUIRK_DISCARD_ZEROES = (1 << 2), + + /* + * The controller needs a delay before starts checking the device + * readiness, which is done by reading the NVME_CSTS_RDY bit. + */ + NVME_QUIRK_DELAY_BEFORE_CHK_RDY = (1 << 3), }; +/* The below value is the specific amount of delay needed before checking + * readiness in case of the PCI_DEVICE(0x1c58, 0x0003), which needs the + * NVME_QUIRK_DELAY_BEFORE_CHK_RDY quirk enabled. The value (in ms) was + * found empirically. + */ +#define NVME_QUIRK_DELAY_AMOUNT 2000 + enum nvme_ctrl_state { NVME_CTRL_NEW, NVME_CTRL_LIVE, NVME_CTRL_RESETTING, + NVME_CTRL_RECONNECTING, NVME_CTRL_DELETING, NVME_CTRL_DEAD, }; @@ -80,6 +99,7 @@ struct nvme_ctrl { spinlock_t lock; const struct nvme_ctrl_ops *ops; struct request_queue *admin_q; + struct request_queue *connect_q; struct device *dev; struct kref kref; int instance; @@ -107,10 +127,22 @@ struct nvme_ctrl { u8 event_limit; u8 vwc; u32 vs; + u32 sgls; + u16 kas; + unsigned int kato; bool subsystem; unsigned long quirks; struct work_struct scan_work; struct work_struct async_event_work; + struct delayed_work ka_work; + + /* Fabrics only */ + u16 sqsize; + u32 ioccsz; + u32 iorcsz; + u16 icdoff; + u16 maxcmd; + struct nvmf_ctrl_options *opts; }; /* @@ -144,7 +176,9 @@ struct nvme_ns { }; struct nvme_ctrl_ops { + const char *name; struct module *module; + bool is_fabrics; int (*reg_read32)(struct nvme_ctrl *ctrl, u32 off, u32 *val); int (*reg_write32)(struct nvme_ctrl *ctrl, u32 off, u32 val); int (*reg_read64)(struct nvme_ctrl *ctrl, u32 off, u64 *val); @@ -152,6 +186,9 @@ struct nvme_ctrl_ops { void (*free_ctrl)(struct nvme_ctrl *ctrl); void (*post_scan)(struct nvme_ctrl *ctrl); void (*submit_async_event)(struct nvme_ctrl *ctrl, int aer_idx); + int (*delete_ctrl)(struct nvme_ctrl *ctrl); + const char *(*get_subsysnqn)(struct nvme_ctrl *ctrl); + int (*get_address)(struct nvme_ctrl *ctrl, char *buf, int size); }; static inline bool nvme_ctrl_ready(struct nvme_ctrl *ctrl) @@ -204,9 +241,11 @@ static inline int nvme_error_status(u16 status) static inline bool nvme_req_needs_retry(struct request *req, u16 status) { return !(status & NVME_SC_DNR || blk_noretry_request(req)) && - (jiffies - req->start_time) < req->timeout; + (jiffies - req->start_time) < req->timeout && + req->retries < nvme_max_retries; } +void nvme_cancel_request(struct request *req, void *data, bool reserved); bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, enum nvme_ctrl_state new_state); int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap); @@ -230,8 +269,9 @@ void nvme_stop_queues(struct nvme_ctrl *ctrl); void nvme_start_queues(struct nvme_ctrl *ctrl); void nvme_kill_queues(struct nvme_ctrl *ctrl); +#define NVME_QID_ANY -1 struct request *nvme_alloc_request(struct request_queue *q, - struct nvme_command *cmd, unsigned int flags); + struct nvme_command *cmd, unsigned int flags, int qid); void nvme_requeue_req(struct request *req); int nvme_setup_cmd(struct nvme_ns *ns, struct request *req, struct nvme_command *cmd); @@ -239,7 +279,7 @@ 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, struct nvme_completion *cqe, void *buffer, unsigned bufflen, - unsigned timeout); + unsigned timeout, int qid, int at_head, int flags); int nvme_submit_user_cmd(struct request_queue *q, struct nvme_command *cmd, void __user *ubuffer, unsigned bufflen, u32 *result, unsigned timeout); @@ -256,6 +296,8 @@ int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid, int nvme_set_features(struct nvme_ctrl *dev, unsigned fid, unsigned dword11, dma_addr_t dma_addr, u32 *result); int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count); +void nvme_start_keep_alive(struct nvme_ctrl *ctrl); +void nvme_stop_keep_alive(struct nvme_ctrl *ctrl); struct sg_io_hdr; |