Adaptec AHD U320 operating as only U160

[Gelsema, P (Patrick) - FreeBSD]

On Sun, February 17, 2008 07:33, Justin T. Gibbs wrote:
> Niki Denev wrote:
>  > I was playing around with DTrace, tracing cam/xpt and the ahd driver
> and
>  > found out that if i comment the following code :
>  >
>  >         if ((spi3caps & SID_SPI_IUS) == 0)
>  >                 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
>  >
>  > at line 6655 in sys/cam/cam_xpt.c my disks again negotiate as U320 :
>  >
>  >   da0 at ahd0 bus 0 target 0 lun 0
>  >   da0: <SEAGATE ST336807LW 0C01> Fixed Direct Access SCSI-3 device
>  >   da0: 320.000MB/s transfers (160.000MHz DT, offset 63, 16bit)
>  >   da0: Command Queueing Enabled
>  >   da0: 35003MB (71687372 512 byte sectors: 255H 63S/T 4462C)
>
> The aic79xx driver was not properly exporting its capabilities to
> CAM.  This has been addressed as of version 1.30 of aic79xx_osm.c.
> Please let me know if you still have problems.

hulk# uname -a
FreeBSD hulk.superhero.nl 7.0-RC2 FreeBSD 7.0-RC2 #0: Sun Feb 17 17:58:36
CET 2008     admin at hulk.superhero.nl:/usr/obj/usr/src/sys/GENERIC  amd64

hulk# camcontrol inquiry da1
pass1: <SEAGATE ST336753LW HPS3> Fixed Direct Access SCSI-3 device
pass1: Serial Number 3HX35KPH000075191ZRW
pass1: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Command
Queueing Enabled

Working. Thanks!

Any chance of mfc-ing this to RELENG_7_0 before 7_0 gets released?

Rgds,

Patrick

>
>  >
>  > Unfortunately I began seeing again the "Invalid sequencer interrupt"
>  > messages that i was seeing before(with fbsd 6.2) with Seagate drives
>  > on Adaptec at U320 speeds, and I prey that they are harmless (as they
>  > used to be?)
>
> While I do not know their root cause, they do appear to be harmless.
> Do you happen to have your drives in a SES enclosure (on a backplane
> with a SES chip)?  One user claimed this was only reproducible when
> a GEM318 SES chip was on the bus.
>
> --
> Justin
>
>