Problem with EP405's PCI

[Jacky Lam]

    Please see my previous post and the reply from xzuo at vinesystech.com .
Hope it can help.

Jacky
----- Original Message -----
From: "Shih-Ying Chou" <sschou at mtu.edu>
To: <linuxppc-embedded at lists.linuxppc.org>
Sent: Friday, October 17, 2003 12:58 PM
Subject: Problem with EP405's PCI


>
> Hi All,
>     Have anyone successfully made the EP405's PCI (through PC/104 plus)
> work?  If anyone does, please help me, I have struggle with it for over a
> month now.
>     Right now I am using the linuxppc_2_4_devel kernel, and I can get the
> EP405 to boot successfully.  But I can get the PCI interface to work
right.
> When booting up, the kernel can recognize the card weither USB or Sound
> card, but it can seem to assign the right irq to the card.  Because USB
card
> always complain about no IRQ assign and ask to check BIOS.
>     I have look at the ep405.c and ppc405_pci.c and ppc4xx_pic.c files,
but
> I cannot find out what is wrong.  I know that I need to modify the
> ppc405_devtable [] in the ep405.c file. I also check the registers such as
> DCRN_UIC_PR, DCRN_UIC_TR, and DCRN_UIC_SR and all the value seems to be
> correct, except DCRN_UIC_PR.  In the ep405.c DCRN_UIC_PR is set to be
> 0xffffff80 which makes the PCI interrupt to be high, so as the User manual
> stated.  But isn't PCI's interrupt should be active low?
>
> Any pointer will be helpful, thank you in advance!
>
> Shih-Ying Chou
>
>


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