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Date:      Sat, 16 Jan 2021 01:50:36 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 235016] ASIX AX99100 based uart controllers broken on 12.0
Message-ID:  <bug-235016-227-MaC0kjZEzs@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235016-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235016-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235016

david@dcrosstech.com changed:

           What    |Removed                     |Added
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                 CC|                            |david@dcrosstech.com

--- Comment #1 from david@dcrosstech.com ---
I have this problem too (12.2); I did a diff between the 11.2 and 12.0 bran=
ches
and I noticed that 12.0 introduced MSI interrupts for all drivers in this
class, I commented that out via an #if 0  and recompiled and ran, and
everything works currently.

I loaded the design specs for this and confirmed this does support MSI, so I
don't think this is a long term solution.  I do have a spare one of these c=
ards
(I think it is the same chip), and some kernel development experience, but =
none
with PCIe..  I am willing and able to work on the correct solution, I will =
just
need some guidance.

(I will first experiment with removing the limit on the number of MSI
interrupts)

--=20
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