Re: [Qemu-devel] [Question] PCI-to-PCI bridge

[Wen Congyang]

At 08/16/2011 09:40 PM, Gerd Hoffmann Write:
> On 08/16/11 04:22, Wen Congyang wrote:
>> Hi, all
>>
>> We'd like to add PCI-to-PCI Bridge for qemu(kvm) for x86/x86_64 box.
>> I read the code, and find the following hardware calls the function
>> pci_bridge_initfn():
>> 1. apb
>> 2. ioh3420
>> 3. xio3130
>>
>> ioh3420 and xio3130 is for PCIe, and apb is for sparc box.
>> I do not find any PCI-to-PCI bridge for x86/x86_64 box.
>> Is there some projects we can join ? If not, we'll start
> 
> There is one in hw/dec_pci.c.  This isn't compiled by default, but that
> is just a configuration issue.  I had some IRQ routing issues with that
> one though.

Yes, I found this device. Do you mean there are some IRQ problems about this
device?

> 
> There is also http://patchwork.ozlabs.org/patch/103058/ which works fine
> after fixing the double irq_num.  Michael wants implement hotplug
> support before merging it though.
> 
> cheers,
>   Gerd
> 
>