From be407614c4ab21df5c8409b65edf262bf1dc662c Mon Sep 17 00:00:00 2001
From: gibbs <gibbs@FreeBSD.org>
Date: Fri, 14 May 1999 05:07:25 +0000
Subject: Better workaround for aic7890 chip bug.  Use the HS_MAILBOX register
 to tell the sequencer to pause itself for a target msg variable update.  This
 avoids the pause race entirely as HS_MAILBOX can be accessed without pausing
 the chip.

3.2 Merge candidate.
---
 sys/dev/aic7xxx/aic7xxx.reg | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'sys/dev/aic7xxx/aic7xxx.reg')

diff --git a/sys/dev/aic7xxx/aic7xxx.reg b/sys/dev/aic7xxx/aic7xxx.reg
index 885d3d1..4fbff1a 100644
--- a/sys/dev/aic7xxx/aic7xxx.reg
+++ b/sys/dev/aic7xxx/aic7xxx.reg
@@ -32,7 +32,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: aic7xxx.reg,v 1.12 1999/01/14 06:14:15 gibbs Exp $
+ *	$Id: aic7xxx.reg,v 1.14 1999/03/08 22:43:23 gibbs Exp $
  */
 
 /*
@@ -669,6 +669,16 @@ register DSPCISTATUS {
 	mask	DFTHRSH_100	0xc0
 }
 
+/* aic7890/91/96/97 only */
+register HS_MAILBOX {
+	address			0x086
+	mask	HOST_MAILBOX	0xF0
+	mask	SEQ_MAILBOX	0x0F
+}
+
+const	HOST_MAILBOX_SHIFT	4
+const	SEQ_MAILBOX_SHIFT	0
+
 /*
  * Host Control (p. 3-47) R/W
  * Overall host control of the device.
@@ -727,6 +737,7 @@ register INTSTAT {
 	mask	NO_IDENT	0x20|SEQINT	/* no IDENTIFY after reconnect*/
 	mask	NO_MATCH	0x30|SEQINT	/* no cmd match for reconnect */
 	mask	ABORT_REQUESTED 0x50|SEQINT	/* Reconect of aborted SCB */
+	mask	UPDATE_TMSG_REQ	0x60|SEQINT	/* Update TMSG_REQ values */
 	mask	BAD_STATUS	0x70|SEQINT	/* Bad status from target */
 	mask	RESIDUAL	0x80|SEQINT	/* Residual byte count != 0 */
 	mask	TRACE_POINT	0x90|SEQINT
-- 
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