Re: PCI1410 Interrupt Problems

[Russell King <rmk@arm.linux.org.uk>]

On Sun, Aug 03, 2003 at 10:15:09PM +0200, Jochen Friedrich wrote:
> when using this PCI Cardbus bridge, i got an interrupt assigned to the
> card by the BIOS, but no interrupts were ever delivered, at all. So no
> insert/remove events have been handled and devices couldn't generate
> interrupts, as well:
> 
> 02:0a.0 Class 0607: 104c:ac50 (rev 01)
> 02:0a.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 01)
>         Flags: bus master, medium devsel, latency 168, IRQ 9
>         Memory at 14000000 (32-bit, non-prefetchable) [size=4K]
>         Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
>         Memory window 0: 14400000-147ff000 (prefetchable)
>         Memory window 1: 14800000-14bff000
>         I/O window 0: 00004000-000040ff
>         I/O window 1: 00004400-000044ff
>         16-bit legacy interface ports at 0001
> 
> It looks like the designers of this card "forgot" to put a sane
> configuration of the Multifunction Routing Register (0x8C) in their
> EEPROM. After setting up the INTA output pin of the PCI1410, the device
> started to work like a charm :-)
> 
> This i added to yenta_config_init():
> 
> config_writew(socket, 0x8C, 0x02);
> 
> I'm not sure if this will help with all of these devices of if it even
> makes problems on others. But it might be an idea to add a config option
> for this hack...

Can you provide the kernel messages without the hack applied please?

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html