Coherent bus_dma for ARMv7

[Adrian Chadd]

hiya,

so why's this need to be different? can't it somehow be merged with
the existing busdma code?



-adrian


On 31 March 2017 at 07:05, Marcin Wojtas <mw at semihalf.com> wrote:
> Patch with the coherent bus_dma support attached.
>
> Marcin
>
> 2017-03-31 16:01 GMT+02:00 Marcin Wojtas <mw at semihalf.com>:
>> Hi,
>>
>> In current FreeBSD-HEAD ARMv7 platforms, which support hardware IO
>> cache coherency cannot make use of this feature. In our project we
>> implemented coherent variant bus_dma, which is basing on x86 and arm64
>> approach. Using of above solution is not obligatory and depends on
>> setting newly added option for that purpose.
>>
>> Needless to say, our platform (Marvell Armada 38x) IO performance
>> boosted after switching to it. Do you wish to enable such option in
>> HEAD?
>>
>> Regards,
>> Marcin
>
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