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Message-ID: <m3mz3464p8.fsf@maximus.localdomain> Date: Fri, 23 Feb 2007 20:42:43 +0100 From: Krzysztof Halasa <khc@...waw.pl> To: Udo van den Heuvel <udovdh@...all.nl> Cc: linux-kernel@...r.kernel.org Subject: Re: PCI riser cards and PCI irq routing, etc Udo van den Heuvel <udovdh@...all.nl> writes: > I have DN19 and DN20 now and it doesn't work. > Only because the INT mapping on the riser is not right? Yes. I assume DN20 works, only DN19 has problems. > http://www.morex.com.tw/drawing/MAR122-J%20Drawing.pdf shows some IDSEL > jumper with ADxx numbers. What could these be? > Photo at http://www.morex.com.tw/products/imgproduct/100-1.jpg. > > Still DN's? The second file shows some 28-pin IC but it's not a PCI-PCI bridge. Jumpers marked AD20-31 are for selecting IDSEL - AD20 = DN9, AD31 is DN20 (DNx = ADx - 11). Perhaps they could say how the INTs are wired. It's possible the IC plays some role there. If the riser card is for specific motherboard(s) only (and it must be) then they can read the IDSEL jumper position with this IC and rotate INTs appropriately (thus it could work, with that particular motherboard(s), in any IDSEL jumper position). -- Krzysztof Halasa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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