Date: Fri, 5 Jul 2002 04:47:01 -0700 (PDT) From: David Schultz <dschultz@uclink.Berkeley.EDU> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/40225: ata driver incorrectly downgrades UDMA4 drives Message-ID: <200207051147.g65Bl1iQ003380@HAL9000.wox.org>
next in thread | raw e-mail | index | archive | help
>Number: 40225
>Category: kern
>Synopsis: ata driver incorrectly downgrades UDMA4 drives
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Jul 05 04:50:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: David Schultz
>Release: FreeBSD 4.6-RELEASE i386
>Organization:
>Environment:
System: FreeBSD HAL9000.wox.org 4.6-RELEASE FreeBSD 4.6-RELEASE #5: Thu Jul 4 01:21:53 PDT 2002 root@HAL9000.wox.org:/usr/obj/usr/src/sys/HAL9000.natd i386
This problem occurs in -CURRENT and 4.6-RELEASE, but not in 4.5-RELEASE,
which leads me to believe that it is hiding in the ata code Søren MFC'd
on 3-18.
>Description:
My primary IDE controller has two drives, only one of which is
normally mounted. The other one spins down after twenty minutes.
But if I suspend the system using either `zzz' or `acpiconf -s 1'
and then resume, the `sleeping' drive is downgraded to UDMA2 when
the controller is reset. The exact message is:
DMA limited to UDMA33, non-ATA66 cable or device
Both drives support UDMA4 and have worked fine for years.
>How-To-Repeat:
Maybe-interesting bits from dmesg follow.
ad1 is the drive I actually use.
atapci0: <VIA 82C596 ATA66 controller> port 0xd800-0xd80f at device 4.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
...
ad0: 19595MB <QUANTUM FIREBALLP LM20.5> [39813/16/63] at ata0-master UDMA66
ad1: 17206MB <WDC AC418000D> [34960/16/63] at ata0-slave UDMA66
acd0: CD-RW <TDK CDRW161040X> at ata1-master WDMA2
acd1: DVD-ROM <TOSHIBA DVD-ROM SD-M1202> at ata1-slave WDMA2
Mounting root from ufs:/dev/ad1s1a
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200207051147.g65Bl1iQ003380>