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Date: Thu, 17 Jul 1997 10:53:35 -0400 (EDT)
From: pechter@lakewood.com
Reply-To: pechter@shell.monmouth.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: ch.c does not use bounce buffers
X-Send-Pr-Version: 3.2

>Number:         4107
>Category:       kern
>Synopsis:       ch.c does not use bounce buffers
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 17 08:00:01 PDT 1997
>Closed-Date:    Wed Apr 15 10:46:59 PDT 1998
>Last-Modified:  Wed Apr 15 10:47:14 PDT 1998
>Originator:     Bill Pechter
>Release:        FreeBSD 2.2.2-RELEASE i386
>Organization:
>Environment:

486 ISA Bus with Adaptec 1542

>Description:

The ch driver does not utilize bounce buffers needed for use on ISA/VESA Local
Bus systems with over 16MB of memory.

>How-To-Repeat:

put more than 16mb of memory in machine and attempt to access ch driver
with chio -- access to the ch device fails with DMA past ISA.

>Fix:
	
lousy work around -- removed second 16mb simm
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: phk 
State-Changed-When: Wed Apr 15 10:46:59 PDT 1998 
State-Changed-Why:  
see PR4270 
>Unformatted:
