kern/136438: ata - discrepancy between 8 and earlier rel. (?)

Barbara barbara.xxx1975 at libero.it
Tue Jul 7 20:00:13 UTC 2009


>Number:         136438
>Category:       kern
>Synopsis:       ata - discrepancy between 8 and earlier rel. (?)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 07 20:00:12 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Barbara
>Release:        7-STABLE, 8-STABLE
>Organization:
>Environment:
FreeBSD satanasso.local.net 7.2-STABLE FreeBSD 7.2-STABLE #1: Wed Jul  1 20:39:38 CEST 2009     root at satanasso.local.net:/usr/obj/usr/src/sys/SATANASSO  i386

FreeBSD satanasso.local.net 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Sun Jul 5 14:10:54 CEST 2009 root at satanasso.local.net:/usr/obj/usr/src/sys/SATANASSO i386

>Description:
On 8, my dmesg contains:
atapci2: <VIA 8237A UDMA133 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 15.1 on pci0
ata0: <ATA channel 0> on atapci2
..
ad0: DMA limited to UDMA33, device found non-ATA66 cable
ad0: 152627MB <MAXTOR STM3160212A 3.AAJ> at ata0-master UDMA33
..
ad1: 117246MB <Maxtor 6Y120L0 YAR41BW0> at ata0-slave UDMA133

Atacontrol says:
# atacontrol info ata0
Master: ad0 <MAXTOR STM3160212A/3.AAJ> ATA/ATAPI revision 7
Slave: ad1 <Maxtor 6Y120L0/YAR41BW0> ATA/ATAPI revision 7

So, if ad0 and ad1 are both attached with the same cable, why ad0 should be limited while ad1 is not?

On 7, I have:
ad0: 152627MB <MAXTOR STM3160212A 3.AAJ> at ata0-master UDMA100
which seems correct.
as I always had since I had this mainboard (with 6.2).

I've also replaced the cable with a brand new one, with the same results.
So, what's wrong?

I wonder if 8 is exposing a HW problem that I should be worried about or simply something wrong was introduced.

>How-To-Repeat:

>Fix:


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


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