PROBLEM:  (#80500, #80226) (PATCH ID: OSF445-080)
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Fix for incorrect header length in GS-series Hierarchical
Switch machine check frames. Early revisions of PCA
chips don't allow DMA Window3.

PROBLEM: (81882) (PATCH ID: OSF445-129)
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Under a specific set of unlikely circumstances it is possible for revision 4 PCA
hardware to falsely report PCI hung bus errors, which will cause a uncorrectable
hardware machine check and operating system panic. The following console error
messages indicate this problem has occurred. The "PCI bus hung during Fault"
text in the error message is the key to detecting this error. Note: the false
PCI bus hung error only occurs with revision 4 PCA hardware.
        iop: ioa_err_sum =       0x100000000
                Bit 32: Hose 0 PCA reported an Uncorrectable Error
        pca: pca_whatami =       0x8000034
                Bit 2: ASIC revision
                Bit 4: Backplane revision
                Bit 5: Backplane revision
                Bit 27: Microprocessor present
        pca: pca_err_sum =       0x8000
                Bit 15: PCI bus hung during Fault
        pca: ne_whatami =        0x100000302
        pca: fe_whatami =        0x100000202
        pca: pci0_err_sum =      0x10068000
                Bit 15: PCI bus hung during Fault
                Bit 17: Failing PCI command
                Bit 18: Failing PCI command
                Bit 28: PCA was PCI initiator when bus was hung
        pca: pci0_err_addr =     0x2030000
        pca: pci1_err_sum =      0x4060000
                Bit 17: Failing PCI command
                Bit 18: Failing PCI command
                Bit 26: PCI slot that was active during the failure
        pca: pci1_err_addr =     0xc0011500
Machine Check SYSTEM Fatal Abort
Machine check code = 0x100000202
        Ibox Status                             = 0000000000000000
        Dcache Status                           = 0000000000000000
        Cbox Address                            = 0000000000000000
        Fill Syndrome 1                         = 0000000000000000
        Fill Syndrome 0                         = 0000000000000000
        Cbox Status                             = 0000000000000000
        EV6 captured status of Bcache mode      = 0000000000000000
        EV6 Exception Address                   = fffffc000097aff0
        EV6 Interrupt Enablement and Current Processor mode = 0000007ee0000000
        EV6 Interrupt Summary Register          = 0000002000000000
        EV6 TBmiss or Fault status              = 0000000000000000
        EV6 PAL Base Address                    = 0000000000020000
        EV6 Ibox control                        = fffffffc0c306396
        EV6 Ibox Process_context                = 0000718000000004
        Cpu Fault Summary       = 0x1
QBB bit-directed reg. dump
                QBB 0 CSRs to be logged summary = 0x1100
                QBB 1 CSRs to be logged summary = 0x0
                QBB 2 CSRs to be logged summary = 0x0
                QBB 3 CSRs to be logged summary = 0x0
                QBB 4 CSRs to be logged summary = 0x0
                QBB 5 CSRs to be logged summary = 0x0
                QBB 6 CSRs to be logged summary = 0x0
                QBB 7 CSRs to be logged summary = 0x0
panic (cpu 0): System Uncorrectable Machine Check


PROBLEM: (81582) (PATCH ID: OSF445-127)
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When an Alphaserver GS80, GS160, or GS320 system reaches a critical 
temperature, it will shut itself down as a precaution.  This temperature 
is safe for the power supply's but the system will issue an enviromental 
warning and shut itself down. The fix to this problem is to no longer take 
into account the power supply's tempature when determining the system's 
tempature.


PROBLEM: (83129, 84172) (PATCH ID: OSF445-206)
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On wildfires with PCI adapters of mixed revision, the PCA registers are set up 
incorrectly.  This leads to kernel memory faults of variable characteristics.
While this is not a configuration which is sold, it may exist in the field, and
will certainly exist in-house.

PCA and their revisions may be identified by their model numbers:
	PCA4 (B4171-AC)	
	PCA3 (B4171-AA E02 or B4171-AB - doesn't matter)