diff options
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 48 |
1 files changed, 17 insertions, 31 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index ab2d6ec7eb5c..29c708ca9621 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -21,16 +21,6 @@ #include <linux/lightnvm.h> #include <linux/sed-opal.h> -enum { - /* - * Driver internal status code for commands that were cancelled due - * to timeouts or controller shutdown. The value is negative so - * that it a) doesn't overlap with the unsigned hardware error codes, - * and b) can easily be tested for. - */ - NVME_SC_CANCELLED = -EINTR, -}; - extern unsigned char nvme_io_timeout; #define NVME_IO_TIMEOUT (nvme_io_timeout * HZ) @@ -43,8 +33,6 @@ extern unsigned char shutdown_timeout; #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, @@ -68,10 +56,10 @@ enum nvme_quirks { NVME_QUIRK_IDENTIFY_CNS = (1 << 1), /* - * The controller deterministically returns O's on reads to discarded - * logical blocks. + * The controller deterministically returns O's on reads to + * logical blocks that deallocate was called on. */ - NVME_QUIRK_DISCARD_ZEROES = (1 << 2), + NVME_QUIRK_DEALLOCATE_ZEROES = (1 << 2), /* * The controller needs a delay before starts checking the device @@ -97,6 +85,13 @@ enum nvme_quirks { struct nvme_request { struct nvme_command *cmd; union nvme_result result; + u8 retries; + u8 flags; + u16 status; +}; + +enum { + NVME_REQ_CANCELLED = (1 << 0), }; static inline struct nvme_request *nvme_req(struct request *req) @@ -254,25 +249,17 @@ static inline void nvme_cleanup_cmd(struct request *req) } } -static inline int nvme_error_status(u16 status) +static inline void nvme_end_request(struct request *req, __le16 status, + union nvme_result result) { - switch (status & 0x7ff) { - case NVME_SC_SUCCESS: - return 0; - case NVME_SC_CAP_EXCEEDED: - return -ENOSPC; - default: - return -EIO; - } -} + struct nvme_request *rq = nvme_req(req); -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 && - req->retries < nvme_max_retries; + rq->status = le16_to_cpu(status) >> 1; + rq->result = result; + blk_mq_complete_request(req); } +void nvme_complete_rq(struct request *req); 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); @@ -307,7 +294,6 @@ void nvme_start_freeze(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, int qid); -void nvme_requeue_req(struct request *req); int nvme_setup_cmd(struct nvme_ns *ns, struct request *req, struct nvme_command *cmd); int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, |