SCB trouble on SMP machine with AHC

[Michael L. Squires]

> Hi,
> 
> I've installed FreeBSD 5.1 on a Siemens PCD-5T SMP machine. With the
> GENERIC kernel, everything seemed to be OK, but now that I've compiled a
> SMP kernel, I get SCB error dumps on boot... But after that, the system
> runs stable without any error.

> ahc0: <Adaptec 2940 SCSI adapter> port 0xe000-0xe0ff mem
> 0x84000000-0x84000fff i
> rq 14 at device 14.0 on pci0
> aic7870: Single Channel A, SCSI Id=7, 16/253 SCBs

I'm running 5.1-RELEASE with SMP on a SM P6DGH with the on-board
Adaptec 7896/97 U2W two-channel chip, and don't have SCSI problems.

I'm wondering how old your 2940 card is, and what rev the SCSI BIOS
is at.

I have a few older 2940U/UW's here, but not a 2940 narrow card.

Mike Squires