we have 2 BARs, first one BAR0 is for the register access and BAR4 is for
the MSI-X.
after the enumeration BAR0 will be programmed with resource at 0x20(MSI-x
resource) and BAR4 for CSR access.
this is happening since the last resource is added to the head. which
lists resources in reverse order and i don't see any need to have
resources in reverse order.
regards
Ganapat
On Tue, Jun 3, 2014 at 11:57 AM, Andrew Fish <af...@apple.com> wrote:
>
> On Jun 2, 2014, at 11:07 PM, Ganapatrao Kulkarni <gpkulka...@gmail.com>
> wrote:
>
> can some one please explain me on this?
>
>
> On Mon, May 26, 2014 at 10:19 AM, Ganapatrao Kulkarni <
> gpkulka...@gmail.com> wrote:
>
>> Hi All,
>>
>> i came across function InsertResourceNode in file
>> MdeModulePkg/Bus/Pci/PciBusDxe/PciResourceSupport.c
>> is adding the last resource as the first node, with that our controller 2
>> BARs (BAR0 and BAR4, 64bit mode, type mem) are getting
>> allocated in reverse order, i.e first region is getting programmed at
>> offset 0x20 and second one at 0x10.
>> IMHO, it should be other way.
>>
>>
> Why does it matter? The system just needs to forward the addresses for
> your two bars to the bus your device sits on. Only your device knows what
> the addressees mean.
>
> Thanks,
>
> Andrew Fish
>
> can some one please explain me on this?
>>
>> my source base-lined with version git-svn-id:
>> https://svn.code.sf.net/p/edk2/code/trunk/edk2@15439
>> 6f19259b-4bc3-4df7-8a09-765794883524
>>
>>
>> thanks
>> Ganapat
>>
>>
>
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