svn commit: r354218 - head/sys/dev/ena

[Marcin Wojtas]

Hi John,

Sure, will be happy to test. Please let me know and cc mk at semihalf.com.

Best regards,
Marcin

pt., 1 lis 2019 o 01:04 John Baldwin <jhb at freebsd.org> napisał(a):

> On 10/31/19 8:38 AM, Marcin Wojtas wrote:
> > Author: mw
> > Date: Thu Oct 31 15:38:17 2019
> > New Revision: 354218
> > URL: https://svnweb.freebsd.org/changeset/base/354218
> >
> > Log:
> >   Add WC support for arm64 in the ENA driver
> >
> >   As the pmamp_change_attr() is public on arm64 since r351131, it can be
> >   used on the arm64 to map memory range as with the write combined
> >   attribute.
> >
> >   It requires the driver to use generic VM_MEMATTR_WRITE_COMBINING flag
> >   instead of the x86 specific PAT_WRITE_COMBINING.
> >
> >   Differential Revision: https://reviews.freebsd.org/D21931
> >   Submitted by:  Michal Krawczyk <mk at semihalf.com>
> >   Obtained from: Semihalf
> >   Sponsored by:  Amazon, Inc.
>
> This isn't the right API for this, but the right API isn't ready yet on
> arm64.  I have a patch to add bus_map_resource support on all platforms
> that I'm working on testing, and that will be the right way to request
> this in the future once it lands.
>
> --
> --
> John Baldwin
>