Re: [PATCH] pci: enable MSI on 8132

Yinghai Lu
2009-02-21T08:31:44Z

On Fri, Feb 20, 2009 at 11:50 PM, Eric W. Biederman
<ebiederm@xmission.com> wrote:
> Robert Hancock <hancockrwd@gmail.com> writes:
>>
>> Is there a reason why we can't just enable the HT MSI mapping for any bridge
>> device that has that PCI capability and is underneath an HT bridge?
>
> The code should be under CONFIG_X86 because the rules for enabling HT MSI mappings
> are different for other architectures. But otherwise I can't think of a reason.

move to arch/x86/pci/fixup.c?

it seems some other arch do support HT ... powerpc, mips?

>
>> Essentially
>> the code for nv_msi_ht_cap_quirk could potentially be applied to all bridges as
>> it is currently for NVIDIA and ALi bridges..
>
> Sounds like it would save a fair amount of grief.

it seems there is some difference.
8132 is some kind of HT tunnel, and the bridge is acctually pci-x bridge.

mcp55 and ck804: is HT end device with several pcie bridges.

also 8131 has problem with HT MSI?

YH