which have the Tekram TRM-S1040 ASIC.
This driver is written by Rui-Xiang Guo <rxg@ms25.url.com.tw>,
and a number of cosmetic changes by me.
Tested on i386 by the author, and on macppc and sparc64 by me.
XXX On arc, kernel got panic in ltsleep() called from scsipi_execute_xs(),
XXX but I'm not sure what is wrong...