From 9591b63489d25baba69f9923bac30213adfc6fe3 Mon Sep 17 00:00:00 2001
From: "Justin T. Gibbs" <gibbs@FreeBSD.org>
Date: Sun, 28 Apr 1996 19:43:10 +0000
Subject: [PATCH] Bring back the AHC_TAGENABLE compile option and document it. 
 You must use this option to get tagged queuing.  Just like the old days.

---
 share/man/man4/ahc.4           | 11 +++++++++--
 share/man/man4/man4.i386/ahc.4 | 11 +++++++++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/share/man/man4/ahc.4 b/share/man/man4/ahc.4
index 160073830e23..38641937ace9 100644
--- a/share/man/man4/ahc.4
+++ b/share/man/man4/ahc.4
@@ -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.
diff --git a/share/man/man4/man4.i386/ahc.4 b/share/man/man4/man4.i386/ahc.4
index 160073830e23..38641937ace9 100644
--- a/share/man/man4/man4.i386/ahc.4
+++ b/share/man/man4/man4.i386/ahc.4
@@ -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.