diff options
Diffstat (limited to 'include/scsi/scsi_host.h')
| -rw-r--r-- | include/scsi/scsi_host.h | 38 |
1 files changed, 8 insertions, 30 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 5ea06d310a25..6ca954e9f752 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -11,7 +11,6 @@ #include <linux/blk-mq.h> #include <scsi/scsi.h> -struct request_queue; struct block_device; struct completion; struct module; @@ -22,7 +21,6 @@ struct scsi_target; struct Scsi_Host; struct scsi_host_cmd_pool; struct scsi_transport_template; -struct blk_queue_tags; /* @@ -44,9 +42,6 @@ struct blk_queue_tags; #define MODE_INITIATOR 0x01 #define MODE_TARGET 0x02 -#define DISABLE_CLUSTERING 0 -#define ENABLE_CLUSTERING 1 - struct scsi_host_template { struct module *module; const char *name; @@ -366,6 +361,11 @@ struct scsi_host_template { unsigned int max_sectors; /* + * Maximum size in bytes of a single segment. + */ + unsigned int max_segment_size; + + /* * DMA scatter gather segment boundary limit. A segment crossing this * boundary will be split in two. */ @@ -415,16 +415,6 @@ struct scsi_host_template { unsigned unchecked_isa_dma:1; /* - * True if this host adapter can make good use of clustering. - * I originally thought that if the tablesize was large that it - * was a waste of CPU cycles to prepare a cluster list, but - * it works out that the Buslogic is faster if you use a smaller - * number of segments (i.e. use clustering). I guess it is - * inefficient. - */ - unsigned use_clustering:1; - - /* * True for emulated SCSI host adapters (e.g. ATAPI). */ unsigned emulated:1; @@ -547,14 +537,8 @@ struct Scsi_Host { struct scsi_host_template *hostt; struct scsi_transport_template *transportt; - /* - * Area to keep a shared tag map (if needed, will be - * NULL if not). - */ - union { - struct blk_queue_tag *bqt; - struct blk_mq_tag_set tag_set; - }; + /* Area to keep a shared tag map */ + struct blk_mq_tag_set tag_set; atomic_t host_busy; /* commands actually active on low-level */ atomic_t host_blocked; @@ -604,6 +588,7 @@ struct Scsi_Host { short unsigned int sg_tablesize; short unsigned int sg_prot_tablesize; unsigned int max_sectors; + unsigned int max_segment_size; unsigned long dma_boundary; /* * In scsi-mq mode, the number of hardware queues supported by the LLD. @@ -621,7 +606,6 @@ struct Scsi_Host { unsigned active_mode:2; unsigned unchecked_isa_dma:1; - unsigned use_clustering:1; /* * Host has requested that no further requests come through for the @@ -648,7 +632,6 @@ struct Scsi_Host { /* The controller does not support WRITE SAME */ unsigned no_write_same:1; - unsigned use_blk_mq:1; unsigned use_cmd_list:1; /* Host responded with short (<36 bytes) INQUIRY result */ @@ -742,11 +725,6 @@ static inline int scsi_host_in_recovery(struct Scsi_Host *shost) shost->tmf_in_progress; } -static inline bool shost_use_blk_mq(struct Scsi_Host *shost) -{ - return shost->use_blk_mq; -} - extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *); extern void scsi_flush_work(struct Scsi_Host *); |