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SubjectRE: [PATCH 3/3] PCI: Add pci_read_base() API
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On Tuesday, July 29, 2008 9:50 AM, Matthew Wilcox <mailto:matthew@wil.cx> wrote:

> On Tue, Jul 29, 2008 at 09:22:03AM +0800, Zhao, Yu wrote:
>> Greetings,
>>
>> It would be nice if people can have an enhanced
> pci_update_resource to update non-standard BARs probed by
> pci_read_base.
>
> Yes, that would be a natural addition to the API. However, we don't
> tend to add APIs until we have a use case for them. Do you have
> anything in the pipeline that could use this feature? I'm quite happy
> to write the code for you if you do.

There is a new PCIe extended capability SR-IOV, which defines 6 additional BARs encapsulated inside the capability. I'm writing code to support it, and will be using your APIs to probe and update these non-standard BARs.

The SR-IOV specification can be found at:
http://www.pcisig.com/members/downloads/specifications/iov/sr-iov1.0_11Sep07.pdf

Thanks.

>
> --
> Intel are signing my paycheques ... these opinions are still mine
> "Bill, look, we understand that you're interested in selling us this
> operating system, but compare it to ours. We can't possibly take such
> a retrograde step."



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