kern/147704: [mpt] sys/dev/mpt: new chip revision, partially unsupported

[Michael Fuckner]

On 06/09/2010 02:16 AM, linimon at FreeBSD.org wrote:
> Old Synopsis: sys/dev/mpt: new chip revision, partially unsupported
> New Synopsis: [mpt] sys/dev/mpt: new chip revision, partially unsupported
>
> Responsible-Changed-From-To: freebsd-bugs->freebsd-scsi
> Responsible-Changed-By: linimon
> Responsible-Changed-When: Wed Jun 9 00:16:17 UTC 2010
> Responsible-Changed-Why:
> Over to maintainer(s).
>
> http://www.freebsd.org/cgi/query-pr.cgi?pr=147704
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Hi all,

this is probably caused by the firmware.

LSI Chips may use several different firmwares so they show up with 
different pci-ids and user different drivers.

The best FW is IR, which needs a special NVRAM Chip onboard and is 
capable of Raid.
Most mainboards don't have this chip so IT and SR-Firmwares are 
possible. IT is not capable of handling RAID an SR needs a special 
binary only part in Linux. Linux has a special megasr driver for this. 
IT and IR use mptsas in Linux, mpt in FreeBSD. I don't think there is a 
Driver for SR in BSD.

Regards,
  Michael!