Date: Wed, 30 Mar 2005 02:42:19 GMT From: Murray Baker <murray_baker@NOSPAM.ihug.com.au> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/79350: "ata" unrequested increase in xDMAx speed due to channel reset Message-ID: <200503300242.j2U2gJBd030085@www.freebsd.org> Resent-Message-ID: <200503300250.j2U2o29v044292@freefall.freebsd.org>
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>Number: 79350
>Category: i386
>Synopsis: "ata" unrequested increase in xDMAx speed due to channel reset
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-i386
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Mar 30 02:50:02 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Murray Baker
>Release: 5.3
>Organization:
>Environment:
FreeBSD daigomi.baker.lan 5.3-RELEASE FreeBSD 5.3-RELEASE #1: Mon Mar 28 17:13:02 EST 2005 root@daigomi.baker.lan:/usr/src/sys/i386/compile/DAIGOMI i386
(5.3 with atapicam)
>Description:
Various cd related operations cause an ata channel reset. This is
a problem if atacontrol has previously been used to set a slower xDMAx
speed, the original detected higher speed not working properly.
Attempting to mount_cd9660 a defective or incompatible media can do
this. So will "atacontrol reinit" or "camcontrol reset".
>How-To-Repeat:
Can be demonstrated as follows...
atacontrol mode 1
Master = UDMA33
Slave = UDMA66
atacontrol mode 1 UDMA33 UDMA33
Master = UDMA33
Slave = UDMA33
camcontrol reset 1 (or atacontrol reinit 1)
Reset of bus 1 was successful
atacontrol mode 1
Master = UDMA33
Slave = UDMA66
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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