more multiple dec21140 on ppc

[gregory.menke at gsfc.nasa.gov]

Till Straumann writes:
 > gregory.menke at gsfc.nasa.gov wrote:
 > > (sorry Till, I sent a copy to to alone by accident...)
 > > 
 > > 
 > > I'm still working on it and have little more to report except that its
 > > increasingly looking like something isn't quite configured right in
 > > MPIC or the PBC.  
 > > 
 > > Shifting the onboard dec to MPIC irq 2 (which its supposed to be wired
 > > to) causes it to stop receiving interrupts (and I am changing its
 > > INTERRUPT_LINE value to 2, with name = 18).  I've only been able to
 > > make the onboard dec operate under its ISA irq 10.
 > > 
 > 
 > Hmm - I cannot reproduce your problem on my mvme2306 board.
 > Here's what works (with both, the original dec21140.c and the
 > modified version you sent me a couple of days ago) on my board:

Figures- it sounds like your board is working the way its supposed to.
I am seeing some signs of life when I share ISA irq 10 between the
onboard and cpci dec boards, then poll them at int time to find out
which one is asserting.  I am seeing some activity receiving ethernet
broadcasts on the cpci board (via if_tap), but no operation.  I
suspect the board is not being configured right.  I'm tracing the
board setup now.


 > 
 > a) I do nothing, boot -> dec driver reports it is using interrupt 10
 >     which in fact is the ISA interrupt.

I get this from ppcbug as well.  I'll give the csaw options a try, but
I'm not hopeful....

Thanks,

Gregm