twa breakage on AMD64 with9.1.5.23wareversionand2005-01-1103:00:49 UTC RELENG_5 commit

[Michael R. Wayne]

Hmm, this might be my problem as well.  I'm running -STABLE from November:
   FreeBSD 5.3-STABLE #3: Tue Nov 30 01:44:05 EST 2004 
but when I build a current kernel, I can't even boot!

At this point I am reluctant to upgrade anything until the
problem is determined - breaking production servers isn't
a good plan.

>From my (working) dmesg:

   3ware device driver for 9000 series storage controllers, version: 2.50.00.000
   twa0: <3ware 9000 series Storage Controller> port 0x3000-0x30ff mem 0xfd800000-0xfdffffff,0xfd020000-0xfd0200ff irq 26 at device 2.0 on pci2
   twa0: [GIANT-LOCKED]
   twa0: 4 ports, Firmware FE9X 2.04.00.003, BIOS BE9X 2.03.01.047

The box failed with:

   Mounting root from ufs:/dev/da0s1a
   setrootbyname failed
   ffs_mountroot: can't find rootvp
   Root mount failed: 6