Fellow DECstation hackers,
On 30-Aug-98 Thomas Riemer wrote:
> I noticed the line
> dev->irq = 5
> in declance.c....
> How does the linux stuff prevent clashes on interrupt numbers? Is
> there a list somewhere that is used to prevent interrupt clashes?
Yes, indeed, there is. When it comes to interrupts, the situation becomes
uhmmm... interesting ;-). The DECstation engineers, in their infinite wisdom,
decided that the interrupts on the different DS models have to be completely
I have been trying to hide those differences in the interrupt handler itself
(you may want to have look at int-handler.S and setup.c in arch/mips/dec and
ioasic.h in include/asm-mips/dec).
To make things easier to read (and to write code, of course) I have written
include/asm-mips/dec/interrupts.h. The code in declance.c should be:
dev->irq = ETHER;
This works only for onboard devices. PMAD-AA option modules need
different treatment, but that would make declance.c unneccesary complicated
right now. I suggest we concentrate on bringing device drivers to work, and see
later if it makes sense to merge them.