The mainboard is K7SEM and irq_tables.c is already in
the source tree.
I run the program getpir and get an irq_tables.c file
which is the same
as the one in the source tree. The program util/getpir
reports 6 slot found,
whether I plug in the multimedia card or not, and
produce exact the same irq_tables.c.
And the option HAVE_PIRQ_TABLE=1 is set in the config file of
the source tree.
I traced into the kernel source and found that the original
BIOS set IRQ when POST,
but linuxbios does not do so. The IRQ is 0 when start up with
linuxbios.
When the driver of the multimedia card comes up, it find the
card has not an IRQ.
Then the driver try to get one from the irq_table, but the PCI
device is not in
the irq_table, so it can not find one or assign one to the
device.
What else can I do? Can I hard code one irq to the
card?
Thanks!
David Xiong
----------------------------------------------------------------------------------------
Date: Sun, 29 Sep 2002 12:23:19 -0600 (MDT)
From:
Ronald G Minnich <rminnich@lanl.gov>
To: "Steve M. Gehlbach"
<steve@nexpath.com>
cc: <linuxbios@clustermatic.org>
Subject:
RE: No IRQ Known for interrupt pin A of device 02:04.0. Please
try
using pci=biosirq
On Sun, 29 Sep 2002, Steve M. Gehlbach
wrote:
> You need to make and run the program util/getpir (using the
original BIOS,
> running Linux) to make the file irq_tables.c, then copy
that file into the
> mainboard directory, and set the option
HAVE_PIRQ_TABLE=1. Linuxbios when
> it starts will copy this file
into the shadowed RAM at 0xF0000, where Linux
> can find it during
startup. This allows Linux to route the irqs.
exactly. If this is a
new board I need all the info so I can put it in the
source
tree.
ron