Not the simplest answer, but the TT and TSTATE
stuff (along with probably much more than you
would ever want to know) are pretty well documented
in the appropriate SPARC architecture manuals
freely available at

  http://www.sparc.org/resource.htm

and/or

  http://www.sun.com/processors/documentation.html






On 09/21/2004 09:47 -0400, David Dillow wrote:
>>	On Tue, 2004-09-21 at 02:31, David S. Miller wrote:
>>	> On 21 Sep 2004 00:59:51 -0400
>>	> David Dillow <dave@thedillows.org> wrote:
>>	> 
>>	> > What's a RED State exception?
>>	
>>	[explanation snipped; thanks! ]
>>	
>>	> > TL=0000.0000.0000.0005 TT=0000.0000.0000.0080
>>	> >    TPC=0000.0000.0040.ec98 TnPC=0000.0000.0040.ec9c TSTATE=0000.0000.8000.9504
>>	TPC:	etrap_irq
>>	TnPC:	etrap_irq
>>	> > TL=0000.0000.0000.0004 TT=0000.0000.0000.0010
>>	> >    TPC=0000.0000.0040.d000 TnPC=0000.0000.0040.d004 TSTATE=0000.0000.8000.9504
>>	TPC:	tl1_s0n
>>	TnPC:	tl1_s0n
>>	> > TL=0000.0000.0000.0003 TT=0000.0000.0000.0080
>>	> >    TPC=0000.0000.0040.ec98 TnPC=0000.0000.0040.ec9c TSTATE=0000.0000.8000.9502
>>	TPC:	etrap_irq
>>	TnPC:	etrap_irq
>>	> > TL=0000.0000.0000.0002 TT=0000.0000.0000.0010
>>	> >    TPC=0000.0000.0040.8c00 TnPC=0000.0000.0040.8c04 TSTATE=0000.0000.8008.9402
>>	TPC:	tl0_ivec
>>	TnPC:	tl0_ivec
>>	> > TL=0000.0000.0000.0001 TT=0000.0000.0000.0060
>>	> >    TPC=0000.0000.0042.1b68 TnPC=0000.0000.0042.1b6c TSTATE=0000.0000.8000.9602
>>	TPC:	free_streaming_cluster
>>	TnPC:	free_streaming_cluster
>>	
>>	Doh! Did I mess something up in my prior patch allowing larger than 1MB
>>	sbus_map_sg()'s?
>>	
>>	If that sounds like a reasonable explanation to you, could you describe
>>	the TT and TSTATE parameters, or point me to some documentation?
>>	
>>	Thanks,
>>	Dave
>>	-
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End of included message



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