Coherent bus_dma for ARMv7

[Marcin Wojtas]

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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