misc/143374: notebook with SATA now says: DMA limited to UDMA33, device found non-ATA66 cable

[Vladislav Shabanov]

>Number:         143374
>Category:       misc
>Synopsis:       notebook with SATA now says: DMA limited to UDMA33, device found non-ATA66 cable
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jan 30 17:20:01 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Vladislav Shabanov
>Release:        8-stable, cvsupped 28 jan 2010
>Organization:
Mail.ru
>Environment:
FreeBSD myNotebook 8.0-STABLE FreeBSD 8.0-STABLE #6: Wed Jan 27 14:10:05 MSK 2010     root at myNotebook:/usr/obj/usr/src/sys/VS-FERRARI  amd64
>Description:
When i used FreeBSD7 on this notebook, everything was fine, ata was not degraged with this strange message. Problems started just after upgrade to FBSD 8.0 release. After every commit by Alexander Motin in /dev/ata I cvsup'ed but it still UDMA33.

atapci0 at pci0:0:18:0:    class=0x01018f card=0x010e1025 chip=0x43791002 rev=0x80 hdr=0x00
    vendor     = 'ATI Technologies Inc. / Advanced Micro Devices, Inc.'
    device     = 'IXP SB400 Serial ATA Controller'
    class      = mass storage
    subclass   = ATA
atapci1 at pci0:0:20:1:    class=0x010180 card=0x010e1025 chip=0x43761002 rev=0x80 hdr=0x00
    vendor     = 'ATI Technologies Inc. / Advanced Micro Devices, Inc.'
    device     = 'PATA 133 Controller (SB4xx)'
    class      = mass storage
    subclass   = ATA

/val/log/messages:
Jan 30 18:46:25 vsFerari kernel: ad4: DMA limited to UDMA33, device found non-ATA66 cable
Jan 30 18:46:25 vsFerari kernel: ad4: 305245MB <Hitachi HTS543232L9A300 FB4OC40C> at ata2-master UDMA33

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: