On Sat, 22 Sep 2001, Michael Zayats wrote:
>
> it's true that lspci shows that both my video card and ethercard use IRQ
> 11.
>
> 2 questions:
>
> 1) theoretic: Why at all drm needs IRQ i.e. does AGP sends info back to
> the driver?
>
> 2) practical: AFAIK BIOS is in charge of setting IRQs, but
Hi Michael!
> 2 questions:
>
> 1) theoretic: Why at all drm needs IRQ i.e. does AGP sends info back to
> the driver?
The reason why drm needs an irq is because it can do DMA transfers from
system memory to video card memory (much faster). I take it you know why DMA
transfers need an irq (;
> 2
