Could not deliver interrupts to the PCI board

Could not deliver interrupts to the PCI board

[Li, Feng (GE Healthcare)]

Hello guys,
     I am trying to port our old pci drivers from Linux 2.4 kernel to Linux 2.6 kernel.
Now i am working in Linux 2.6.11. I found a strange problem , after i installed the new driver(based on 2.6.11 kernel)
into kernel, our pci device is recognized as IO-APIC-edge,  and no interrupts can be catched by our driver.( The PCI device shuold be a 
IO-APIC-level type)
     So we disabled the ACPI service and restart the computer again, then the pci device can be recognized as
IO-APIC-level, the driver works well! I think,there are maybe some changes in 2.6.11 for ACPI sleep 
and hibernate that essentially puts ACPI in control of interrupts for many devices.Should i  need to add ACPI 
declaration data to the driver ?

Thanks very much!
Li Feng

 



-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_ide95&alloc_id\x14396&op=click

Re: Could not deliver interrupts to the PCI board

[Bjorn Helgaas]

On Mon, 2005-03-07 at 10:50 +0800, Li, Feng (GE Healthcare) wrote:
>      I am trying to port our old pci drivers from Linux 2.4 kernel to Linux 2.6 kernel.
> Now i am working in Linux 2.6.11. I found a strange problem , after i installed the new driver(based on 2.6.11 kernel)
> into kernel, our pci device is recognized as IO-APIC-edge,  and no interrupts can be catched by our driver.( The PCI device shuold be a 
> IO-APIC-level type)

Make sure that your driver calls pci_enable_device() before
looking at dev->irq.  We now use that hook to do interrupt
routing (enable link devices, set to level triggered mode,
etc).

>      So we disabled the ACPI service and restart the computer again, then the pci device can be recognized as
> IO-APIC-level, the driver works well! I think,there are maybe some changes in 2.6.11 for ACPI sleep 
> and hibernate that essentially puts ACPI in control of interrupts for many devices.Should i  need to add ACPI 
> declaration data to the driver ?

You should not need to add any ACPI smarts to your driver if
it does the pci_enable_device() correctly.



-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click