Re: [ECOS] PCI Issue

[anupam sakargayan <sc_anupam_s at yahoo dot co dot in>]

:-) Thank You Very Much Nick.

I found that my PCI card maps its all ports one after
another, that is on conjugative spaces of 8 memory
locations (because UART has 8 reg), but I am still not
able to find out (programmatically) number of ports in
my card . So issue 6 is solved but 5 still remain for
me.

I have user manual of my PCI card but it contains
general information about UART used ..crad
installation steps etc..  but it doesn't contain any
information, which a programmer requires.

Well, Nike thank you, at least now I can face in the
right direction to solve this issue.

Thx n Rgrds
-Anupam

--- Nick Garnett <nickg@ecoscentric.com> wrote:

> anupam sakargayan <sc_anupam_s@yahoo.co.in> writes:
> 
> > Hello Friends,
> > 
> > I am working on PCI bus. My target board is i386
> PC
> > motherboard; I want to write a PCI scan code for
> it,
> > which should gives me all the details about the
> card
> > inserted into the PCI slot. 
> > 
> > Information like:
> > 
> 
> 
> > 5) Number of ports in the card of same function
> > 6) Base address of all the ports
> 
> The PCI config space registers cannot give you this
> information. All
> PCI tells you is the base addresses of the IO and
> memory regions that
> the card has been allocated. The contents of these
> regions is up to
> the card definition. You will have to look at the
> documentation of the
> cards you are using, or maybe the documentation of
> the chips on the
> card.
> 
> Given that the 2 port card defines one IO region and
> the 4 port card
> defines two, I would guess that the ports are paired
> up in some
> way. Either with the second following the first, or
> accessed through
> the same set of register in some way. Again, the
> card documentation
> will tell you this.
> 
> 
> -- 
> Nick Garnett                                eCos
> Kernel Architect
> http://www.ecoscentric.com           The eCos and
> RedBoot experts
> Visit us at ESC Silicon Valley, April 4-6 2006,     
>   Booth 2044 
> San Jose McEnery Convention Center
> http://www.embedded.com/esc/sv
> 
> 
> -- 
> Before posting, please read the FAQ:
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> 
> 



		
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