AMD756VIPER PCI IRQ Routing Patch (Need Additional Tests)

[Jhon H. Caicedo]

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Hi,

I have been working on a small patch to add support for AMD756 PCI IRQ
Routing with linux-2.4.5

This has been tested with a Gigabyte 7IXE 7F board and several PCI cards,
including a SMC-Lucent PCI Cardbus Bridge which doesn't get an IRQ
assigned by the BIOS.

If anybody has a board based on this chipset I would appreciate further
testing and advise about the patch.

In this alpha version, I left two printk() lines to get information
about the IRQ settings.

You should get an output like the following:

[root@klingon ~]# dmesg | grep 756
PCI: Using IRQ router AMD756 VIPER [1022/740b] at 00:07.3
AMD756: dev 104c:ac1c, router pirq : 4 get irq :  0
AMD756: dev 104c:ac1c, router pirq : 4 get irq :  0
AMD756: dev 10ec:8029, router pirq : 3 get irq : 10
AMD756: dev 104c:ac1c, router pirq : 4 get irq :  0
AMD756: dev 104c:ac1c, router pirq : 4 SET irq :  5
AMD756: dev 104c:ac1c, router pirq : 4 get irq :  5
AMD756: dev 11fe:0005, router pirq : 1 get irq : 12

Thanks.

diff -u linux-2.4.5/arch/i386/kernel/pci-irq.c \
  linux/arch/i386/kernel/pci-irq.c > linux-2.4.5_amd756-pci-routing-alpha1.=
patch

--
Jhon H. Caicedo O. <[e-mail]>
Observatorio Sismol=F3gico del SurOccidente O.S.S.O
http://www.osso.org.co
Cali - Colombia

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