Adaptec AHD U320 operating as only U160 (was: Crash when issueing shutdown -r now)

David O'Brien obrien at
Mon Feb 11 18:45:16 UTC 2008

On Thu, Apr 19, 2007 at 02:13:46PM +0200, Gelsema, P (Patrick) wrote:
> I do have an Adaptec SCSI Controller, and yes I use it. I boot from it.
> ahd0: <Adaptec 39320D Ultra320 SCSI adapter> port
> 0xe800-0xe8ff,0xe400-0xe4ff mem 0xdd7fe000-0xdd7fffff irq 16 at devuce
> 10.0 on pci1
> da0 at ahd0 bus 0 target 4 lun 0
> da0: <SEAGATE ST336753LW HPS2> Fixed Direct Access SCSI-3 device
> da0: 160.000MB/s transfers (80.000MHz DT, offset 63, 16 bit)
> da0: Command Queueing Enabled
> da0: 34732MB (71132960 512 byte sectors: 255H 63S/T 4427C)
> Please note that the transferspeed is 160.00MB/s. In Freebsd 6.2 it's
> recognised as 320MB.

Gelsema & João,

Do you still have your U320 disks running as U160 disks with an Adaptec
U320 controller in 7.0 or 8-CURRENT?  I also have this problem and I've
traced it down to the CAM "NEW TRAN" code.
    revision 1.166
    date: 2006/11/02 00:54:33;  author: mjacob;  state: Exp;  lines: +0 -333
    2nd and final commit that moves us to CAM_NEW_TRAN_CODE as the default.

Given that we're not seeing tons of reports of this issue, I wonder if
its related to either revision of the ASIC or firmware.  For comparison
here is my information from a verbose boot.

ahd0: <Adaptec 39320 Ultra320 SCSI adapter> port 0xb000-0xb0ff,0xa800-0xa8ff mem 0xfa8f8000-0xfa8f9fff irq 29 at device 6.0 on pci4
ahd0: Defaulting to MEMIO on
ahd0: Reserved 0x2000 bytes for rid 0x14 type 3 at 0xfa8f8000
ahd0: Reading VPD from SEEPROM...ahd0: VPD parsing successful
ahd0: Reading SEEPROM...done.
ahd0: STPWLEVEL is on
ahd0: Manual Secondary Termination
ahd0: Primary High byte termination Enabled
ahd0: Primary Low byte termination Enabled
ahd0: Secondary High byte termination Disabled
ahd0: Secondary Low byte termination Disabled
ahd0: Downloading Sequencer Program... 752 instructions downloaded
ahd0: Features 0x101, Bugs 0x8ffe3f, Flags 0x43f1
ahd0: [MPSAFE]
ahd0: [ITHREAD]
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66Mhz, 512 SCBs

-- David  (obrien at
Q: Because it reverses the logical flow of conversation.
A: Why is top-posting (putting a reply at the top of the message) frowned upon?
Let's not play "Jeopardy-style quoting"

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