SPARCclassic and QLogic wide-SCSI controller: 'request queue transfer error'

Hello all,

I'm taking my first steps with OpenBSD on my sun4m (LC) and there was
a QLogic wide-SCSI board, model n: SP1610402-01, occupying one of the
SBus slots.

On this machine I've installed OpenBSD 4.9/sparc. In the 'supported
devices' section of the INSTALL.sparc file, it includes 'QSP/ISP SCSI
controllers (i.e. "PTI,ptisp", "ptisp", "SUNW,isp" and "QLGC,isp")
(isp)'. Based on the message below, which mentions 'isp0', I conclude
that this QLogic board corresponds to one of these and is
theoretically supported.

However, during the initial post-installation boot, the process was
interrupted by the following message, of which the last two lines were
repeated ad nauseam.

--- BEGIN ---
isp0 at sbus0 slot 0 offset 0x10000
isp0: board type 1020A rev 0x0, loaded firmware rev 1.37.0
scsibus1 at isp0: 16 targets, initiator 7
isp0: Request Queue Transfer Error
isp0: board type 1020A rev 0x0, loaded firmware rev 1.37.0
--- END ---

When I removed the board, the system booted with no problem. So I
dusted the board off, re-installed it and tried again. The message
reappeared.

(1) Is there a means to circumvent this interruption whilst leaving
the board installed?

(2) Is the board (a) defective, (b) simply not supported, or (c) have
I inadvertently discovered some strange problem?

Some background information. Previously I was playing with NetBSD
(4.something) on this system and the board was present. The system
never complained, although I do not recall trying to _use_ the board
with a wide-SCSI device. Since this will soon be my only system able
to connect to my wide-SCSI devices, I would like to retrieve this
functionality.

Thanks for your help!

- Alex