K 10
svn:author
V 6
marius
K 8
svn:date
V 27
2009-03-19T16:14:00.145750Z
K 7
svn:log
V 388
MFC: r186140

Don't try reading the SXP_PINS_DIFF on the 10160 and 12160 SCSI
controllers. Reading this register, for which there are indications
that it doesn't really exist, returns 0 on at least some 12160
and doing so on Sun Fire V880 causes a data access error exception.

Reported and tested by:	Beat Gaetzi
Approved by:		mjacob
Obtained from:		OpenBSD (modulo setting isp_lvdmode)

END