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Bring back the AHC_TAGENABLE compile option and document it. You must

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use this option to get tagged queuing.  Just like the old days.
This commit is contained in:
Justin T. Gibbs 1996-04-28 19:43:10 +00:00
parent a515c85818
commit 9591b63489
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=15437
2 changed files with 18 additions and 4 deletions
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11
share/man/man4/ahc.4
View file

@ -40,6 +40,9 @@ For one or more PCI cards:
.Cd controller pci0
.Cd controller ahc0
.Pp
To enable tagged queueing:
.Cd options AHC_TAGENABLE
.Pp
To enable SCB paging:
.Cd options AHC_SCBPAGING_ENABLE
.Pp
@ -58,13 +61,17 @@ or
.Tn AIC7880
host adapter chips.
Features include support for twin and wide busses,
ultra SCSI,
two commands per non-tagged queueing target,
ultra
.Tn SCSI,
two active commands at a time per non-tagged queueing target,
tagged queuing,
and SCB paging which allows up to 255 active commands on all adapters
except those using
.Tn AIC7770
chips prior to revision E.
Tagged queueing is enabled with the
.Dq Dv AHC_TAGENABLE
configuration option.
SCB paging is enabled with the
.Dq Dv AHC_SCBPAGING_ENABLE
configuration option.

11
share/man/man4/man4.i386/ahc.4
View file

@ -40,6 +40,9 @@ For one or more PCI cards:
.Cd controller pci0
.Cd controller ahc0
.Pp
To enable tagged queueing:
.Cd options AHC_TAGENABLE
.Pp
To enable SCB paging:
.Cd options AHC_SCBPAGING_ENABLE
.Pp
@ -58,13 +61,17 @@ or
.Tn AIC7880
host adapter chips.
Features include support for twin and wide busses,
ultra SCSI,
two commands per non-tagged queueing target,
ultra
.Tn SCSI,
two active commands at a time per non-tagged queueing target,
tagged queuing,
and SCB paging which allows up to 255 active commands on all adapters
except those using
.Tn AIC7770
chips prior to revision E.
Tagged queueing is enabled with the
.Dq Dv AHC_TAGENABLE
configuration option.
SCB paging is enabled with the
.Dq Dv AHC_SCBPAGING_ENABLE
configuration option.