Date: Mon, 29 Apr 2013 11:25:12 -0700 From: Jeremy Chadwick <jdc@koitsu.org> To: Adrian Chadd <adrian@freebsd.org> Cc: Fabian Wenk <fabian@wenks.ch>, freebsd-stable@freebsd.org Subject: Re: [Solved] [UART] GPS 18-5Hz LVC and COM1 silence, OK on Linux though... Message-ID: <20130429182512.GA9896@icarus.home.lan> In-Reply-To: <CAJ-Vmo=HonGHZnwpYvW-_U3sDzaXhJO8543qezvZVUGnxkYS7Q@mail.gmail.com> References: <CADWvR2gUqifxF4562%2BTdBea9h%2BSEk-=7fUk8%2B18B-31Y0rh=wA@mail.gmail.com> <517DB738.4060902@restecp.com> <CADWvR2jTF4wFjCf2MvKuQWq-gWXmsKwfx73gjTcdq7Hvk_0N_w@mail.gmail.com> <CADWvR2jUCu64Kh0jStQHj1Jhe59btSoYEMG5QKBanuz=Eaaciw@mail.gmail.com> <CADWvR2gQug_vvp6URn5_mi74GBAEph0nqWmRNgfeLn=cCqAj0g@mail.gmail.com> <517E9782.2050701@wenks.ch> <CAJ-Vmo=50vH0zQwq4fc_mo-57ong32QZS2Z2XtZP6T3EkkWPSg@mail.gmail.com> <517EB559.3060200@wenks.ch> <CAJ-Vmo=HonGHZnwpYvW-_U3sDzaXhJO8543qezvZVUGnxkYS7Q@mail.gmail.com>
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On Mon, Apr 29, 2013 at 11:14:38AM -0700, Adrian Chadd wrote: > On 29 April 2013 11:00, Fabian Wenk <fabian@wenks.ch> wrote: > > > Is there anything I can do to debug? > > I don't know. Unfortunately there's no active uart maintainer. Eh? I was under the impression Marcel Moolenaar <marcel@freebsd.org> was active and maintaining this code. He has alternate Email addresses if that one does not work. > That's why I was wondering if someone already knew about whether uart > kept underflow/overflow statistics. Based on what I can tell, it does not. It has the capability of detecting overruns, but there does not appear to be (based on a quick skim) any counter capability. I should note that this has been a long-standing issue with FreeBSD, re: whether ACPI or ISA should have control over serial ports (uart(4)). The road goes both ways -- what works for some people doesn't for others. If a person is having to throw in ACPI tweaks/overrides/hints to get this to work, someone should probably involve freebsd-acpi. I'll also point out that since the ACPI tables come from the BIOS/UEFI, it does not surprise people that BIOS maintainers often screw things up as well. Nothing on PC architecture is simple any more. Nothing. -- | Jeremy Chadwick jdc@koitsu.org | | UNIX Systems Administrator http://jdc.koitsu.org/ | | Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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