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Re: [Qemu-devel] [Question] PCI-to-PCI bridge
From: |
Wen Congyang |
Subject: |
Re: [Qemu-devel] [Question] PCI-to-PCI bridge |
Date: |
Wed, 17 Aug 2011 10:41:15 +0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 |
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
>
>