PROBLEM:  ( QARs 71852 ) (Patch ID: OSF500-002 )
*******
This patch fixes a KZPCM driver problem.  A panic, machine check, or hang
can occur when aborting an I/O due to a command timeout or aborting an
application program with pending I/Os.

PROBLEM: (QAR 71852, QAR 73310, QAR 73450, QAR 71941) (Patch ID: OSF500-002)
********
This patch fixes problems with the itpsa driver that supports the KZPCM
adapter.  The following problems can occur while the system is processing a
SCSI bus or SCSI bus device reset request that is issued from the class
driver:

1. The following itpsa events are logged in the /var/adm/binary.errlog
   file or the /var/adm/messages file:
         a. Command timeout
         b. Illegal instruction
         c. hth timeout
         d. SCSI bus reset error

2. The system panics and displays the message
  "xpt_callback: CCB NOT ON ANY LIST"

3. The system panics and displays the message
   "simple_lock: TIME LIMIT EXCEEDED"

PROBLEM:  (QAR 73625)    (Patch ID: OSF500-002)
********

This patch fixes a problem  on the 8951U and 8952U adapters.
SCSI bus resets are lost when these adapters are connected to
single ended drives.

PROBLEM:  (QAR 72879)    (Patch ID: OSF500-002)
********
This patch fixes a problem where chip interrupt register fields in
error log is incorrect.

PROBLEM:  (QAR 73581)    (Patch ID: OSF500-002)
********
This patch fixes a lockmode 4 panic on boot.

PROBLEM:  (QAR 72008)    (Patch ID: OSF500-002)
********
This patch fixes a simple lock timeout panic.  It was possible for a bus
reset to be generated before the previous bus reset was processed
causing excessive processing within the ISR.

PROBLEM:  (QAR 74525)    (Patch ID: OSF500-002)
********
This patch fixes kernel memory fault panic caused by a SWS data
structure being released twice.

PROBLEM:  (QAR 75527)    (Patch ID: OSF500-104)
********
This patch fixes a problem with the ITPSA driver.  The driver negotiated
for ULTRA2 speed when it was attached to a single-ended bus.  With this
patch, the driver will negotiate for ULTRA speed if attached to a
single-ended bus and ULTRA2 speed if attached to a LVD bus.

PROBLEM: (75578, 78319, 75527, 77190) (PATCH ID: OSF500-201)
********
This patch fixes a problem with  ITPSA driver in which
the system will panic in itpsa_allocReq() on boot when
lockmode=4 is set.


PROBLEM: (STL047529) (PATCH ID: OSF500-385)
********
The patch fixes a problem with some slower tape devices serviced by the
itpsa driver by lengthening the timeout value used.


PROBLEM: (BCSM91X60) (PATCH ID: OSF500-398)
********
 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