Re: yenta-cardbus IRQ0

[Emiliano Gabrielli <Emiliano.Gabrielli@roma2.infn.it>]

On 03:16, domenica 2 febbraio 2003, Robert Bisping wrote:

> > >> last month and it keeps coming up with IRQ0 and telling me it cant
> > >> find a  irq for pin A. what would be causing this and how do I correct
> > >> it i have  already tried APCI and it does not work on my laptop so
> > >> that is no help. I  have compiled SMP into the kernel though I dont
> > >> have a dual processor (of  course) to gain the added functionality. I
> > >> have recompiled my kernel about  150 times with different setting
> > >> hoping it might just be a conflict in the  kernel with no luck.  I
> > >> looked at the yenta driver it's self and noticed that  it accepts IRQ0
> > >> as a valid irq but that appears to mean no irq at all. which  config
> > >> file would i use to force it to set a irq?
> > >>
> > >> > Thanx for any assistanc you might give
> > >>
> > >> plz send an lspci -vv -xxx -s *your dev*
> > >>
> > >> what kernel are you using ?
> > >
> > > i am using 2.4.18 and here is lspci
> >
> > uhmm, 1th try to upgrade to a newer one, then I experienced the same
> > problem with a custom board... the problem was triggered by the Base
> > Address too high:
> >
> >   Region 0: Memory at 10812000 (32-bit, non-prefetchable) [size=4K]
> >
> > moving id_sel (in the PCI core of the board) in order to obtain a lower
> > bar all worked.
> >
> >
> > BTW, has anybody there ever heared about such a costraint in the PCI
> > specification ?? Why I got this strange behaviour ???
>
> ok, can you give me some more specifics? i.e how do i do that or what
> howto/man etc. (not the kernel part the id_sel part) thanx

I think you can't do that if you are not able to put your hand in the HW.
There's nothing you can do from linux, that I know...

You can take a look to the PCI specification, but i don't think it will aid 
you so much...  

-- 
Emiliano Gabrielli

dip. di Fisica
2° Università di Roma "Tor Vergata"