diff options
Diffstat (limited to 'include/scsi/scsi_tcq.h')
| -rw-r--r-- | include/scsi/scsi_tcq.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h index 81dd12edc38..cdcc90b07ec 100644 --- a/include/scsi/scsi_tcq.h +++ b/include/scsi/scsi_tcq.h @@ -67,7 +67,8 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth) if (!sdev->tagged_supported) return; - if (!blk_queue_tagged(sdev->request_queue)) + if (!shost_use_blk_mq(sdev->host) && + blk_queue_tagged(sdev->request_queue)) blk_queue_init_tags(sdev->request_queue, depth, sdev->host->bqt); @@ -80,7 +81,8 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth) **/ static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth) { - if (blk_queue_tagged(sdev->request_queue)) + if (!shost_use_blk_mq(sdev->host) && + blk_queue_tagged(sdev->request_queue)) blk_queue_free_tags(sdev->request_queue); scsi_adjust_queue_depth(sdev, 0, depth); } @@ -108,6 +110,15 @@ static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg) return 0; } +static inline struct scsi_cmnd *scsi_mq_find_tag(struct Scsi_Host *shost, + unsigned int hw_ctx, int tag) +{ + struct request *req; + + req = blk_mq_tag_to_rq(shost->tag_set.tags[hw_ctx], tag); + return req ? (struct scsi_cmnd *)req->special : NULL; +} + /** * scsi_find_tag - find a tagged command by device * @SDpnt: pointer to the ScSI device @@ -118,10 +129,12 @@ static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg) **/ static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag) { - struct request *req; if (tag != SCSI_NO_TAG) { + if (shost_use_blk_mq(sdev->host)) + return scsi_mq_find_tag(sdev->host, 0, tag); + req = blk_queue_find_tag(sdev->request_queue, tag); return req ? (struct scsi_cmnd *)req->special : NULL; } @@ -130,6 +143,7 @@ static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag) return sdev->current_cmnd; } + /** * scsi_init_shared_tag_map - create a shared tag map * @shost: the host to share the tag map among all devices @@ -138,6 +152,12 @@ static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag) static inline int scsi_init_shared_tag_map(struct Scsi_Host *shost, int depth) { /* + * We always have a shared tag map around when using blk-mq. + */ + if (shost_use_blk_mq(shost)) + return 0; + + /* * If the shared tag map isn't already initialized, do it now. * This saves callers from having to check ->bqt when setting up * devices on the shared host (for libata) @@ -165,6 +185,8 @@ static inline struct scsi_cmnd *scsi_host_find_tag(struct Scsi_Host *shost, struct request *req; if (tag != SCSI_NO_TAG) { + if (shost_use_blk_mq(shost)) + return scsi_mq_find_tag(shost, 0, tag); req = blk_map_queue_find_tag(shost->bqt, tag); return req ? (struct scsi_cmnd *)req->special : NULL; } |