[ANNOUNCEMENT] Wiki for discussing P35/IHC9(R)/SATA issues set up

Scott Long scottl at samsco.org
Tue Nov 6 07:55:45 PST 2007

Jeremy Chadwick wrote:
> On Tue, Nov 06, 2007 at 08:37:27AM -0600, Sean C. Farley wrote:
>> 1. Dell Optiplex 745:
>> ATA channel 2:
>>     Master:  ad4 <WDC WD800JD-75MSA3/10.01E04> Serial ATA II
>>     Slave:       no device present
> Intel Q965 + ICH8, which does SATA300.  atacontrol output proves the
> disk is capable of SATA300 (re: "Serial ATA II"), but for some reason
> it's not.

SATA II does not automatically mean 3GHz link speed.  It's just an 
umbrella term meaning that the drive implements one or more features
defined in SATA-2.  It's similar to the mis-representation in the USB
world of what USB 2.0 means.

> This one is indeed odd and needs investigation.
>> 2. Asus P5K-E/WiFi:
>> ad10: 152627MB <Seagate ST3160827AS 3.42> at ata5-master SATA150
>> ad12: 152627MB <Seagate ST3160827AS 3.42> at ata6-master SATA150
>> ATA channel 5:
>>     Master: ad10 <ST3160827AS/3.42> Serial ATA v1.0
>>     Slave:       no device present
>> ATA channel 6:
>>     Master: ad12 <ST3160827AS/3.42> Serial ATA v1.0
>>     Slave:       no device present
> Intel P35 + ICH9.  The chipset does SATA300 but your disks do not --
> they are Barracuda 7200.7 disks, which support SATA150 maximum.
> However, the motherboard also has a JMicron controller on it.
> After looking at http://www.farley.org/freebsd/tmp/SATA/dmesg-asus.boot,
> it's easy to determine that your SATA150 disks are connected to the ICH9
> controller (which is being reported at ICH8 for some reason; maybe a
> chipset ID thing).  They are not connected to the JMicron, so the
> SATA150 limitation here is caused by the disks.
> The SATA ATAPI errors you see are something I can't really help with,
> many see these kinds of messages on all sorts of hardware.

There seems to be a lot of differing technical opinions on SATA-ATAPI 
support in FreeBSD.  I'll be digging more into it shortly, but probably
not in time for the 7.0 release.


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