PROBLEM: (82158) (PATCH ID: OSF510-004)
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I/O hangs to the ITPSA controller when doing cross RAD I/O (adapter on one quad
thread performing I/O on other quad).


PROBLEM: (BCSM91X60) (PATCH ID: OSF510-210)
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 This patch fixes simple lock time-outs and kernel memory
 faults that can occur with
 EV6 hardware and the itpsa driver.  Stack traces look
 like the following:

  panic+228:  stop_secondary_cpu(0xff800180)
  event_timeout+252:  panic("event_timeout: panic request")  
  xcpu_puts+76:   event_timeout()
  printf+312:  xcpu_puts()
  panic+584:  printf()
  simple_lock_fault+492:     
  panic("simple_lock: time limit exceeded")
  simple_lock_time_violation+24:      
  simple_lock_fault()   simple_lock_D+0:    simple_lock_time_violation()
 WARNING: "st" irregularity: repeating frame: simple_lock_D+0




  0 stop_secondary_cpu   src/kernel/arch/alpha/cpu.c : 614
  1 panic                src/kernel/bsd/subr_prf.c : 751
  2 event_timeout        src/kernel/arch/alpha/cpu.c : 1183
  3 xcpu_puts            src/kernel/bsd/subr_prf.c : 895
  4 printf               src/kernel/bsd/subr_prf.c : 423
  5 panic                src/kernel/bsd/subr_prf.c : 804
  6 trap                 src/kernel/arch/alpha/trap.c : 1760
  7 _XentMM              src/kernel/arch/alpha/locore.s : 1741
  8 thread_dup           src/kernel/arch/alpha/pcb.c : 638
  9 itpsa_hba_go         src/kernel/io/cam/iti/itpsacfg.c : 744