This is the mail archive of the ecos-patches@sources.redhat.com mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: PC - larger PCI spaces


On Wed, 2002-08-14 at 08:10, Mark Salter wrote:
> >>>>> Gary Thomas writes:
> 
> > On Wed, 2002-08-14 at 07:47, Mark Salter wrote:
> >> >>>>> Gary Thomas writes:
> >> 
> >> > Index: hal/i386/pcmb/current/ChangeLog
> >> > ===================================================================
> >> > RCS file: /misc/cvsfiles/ecos/packages/hal/i386/pcmb/current/ChangeLog,v
> >> > retrieving revision 1.15
> >> > diff -u -5 -p -r1.15 ChangeLog
> >> > --- hal/i386/pcmb/current/ChangeLog	23 May 2002 23:03:14 -0000	1.15
> >> > +++ hal/i386/pcmb/current/ChangeLog	14 Aug 2002 12:51:42 -0000
> >> > @@ -1,5 +1,11 @@
> >> > +2002-08-14  Gary Thomas  <gthomas@ecoscentric.com>
> >> > +2002-08-14  Drew Moseley <drew.moseley@intel.com>	
> >> > +
> >> > +	* cdl/hal_i386_pcmb.cdl: 
> >> > +	* include/pcmb_io.h: Increase PCI space to include all possible
> >> > +	busses, slots, etc.  Required because defaults are often too small.	
> >> 
> >> Wow. I wouldn't expect there to be too many systems with >7 PCI bridges
> >> in them.
> >> 
> >> Anyway, I was thinking this might be better handled by cdl in io/pci.
> >> Give the user a chance to enter an actual number and avoid the
> >> overhead of running config cycles for busses which don't exist.
> >> 
> >> Just a thought.
> 
> > Which is why I left it where it was - local to the aberrant
> > system and also why I made it conditional (normally off).
>  
> My point was that it would be nicer to have an io/pci cdl option setting
> the default. With platform cdl or configtool user overriding it. That
> way, you only need a cdl change at most for other platforms that may
> have a large number of busses.
> 

I see your point.  To do it right, one would have to have an option
for all the dimensions.  

> Then again, I don't feel strongly enough to actually implement that at
> the moment. (I should have have thought of this when I added bridge
> support way back when ;-)

I don't feel that motivated either :-)  I'll create a bug which
will remind us (someday, when someone is bored...)

-- 
------------------------------------------------------------
Gary Thomas                  |
eCosCentric, Ltd.            |  
+1 (970) 229-1963            |  eCos & RedBoot experts
gthomas@ecoscentric.com      |
http://www.ecoscentric.com/  |
------------------------------------------------------------


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]