diff options
Diffstat (limited to 'include/scsi/scsi_host.h')
| -rw-r--r-- | include/scsi/scsi_host.h | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index aa760df8c6b3..6ca954e9f752 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -42,9 +42,6 @@ struct scsi_transport_template; #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; @@ -364,6 +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. */ @@ -413,16 +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; @@ -596,6 +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. @@ -613,7 +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 |