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Diffstat (limited to 'include/scsi/scsi_host.h')
-rw-r--r--include/scsi/scsi_host.h20
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