https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #13 from Andriy Gapon ---
It would not be hard to write a driver, the hardware is sufficiently simple and
well documented (public too). Anyone who has time and some coding skills and
interest (or some other motivation) could do
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #12 from Ed Maste ---
(In reply to christi from comment #11)
It looks like there is a virtio-watchdog supported by some VMMs and perhaps
QEMU ought to grow support for this.
Anyhow, it does seem like support for i6300esb watchd
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #11 from chri...@coraline.org ---
I don't think any of the other qemu watchdogs are suitable. The diag288 driver
is for the IBM System 390 mainframe architecture, and I certainly wouldn't
expect it to be supported on AMD64 (it's
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
Ed Maste changed:
What|Removed |Added
Status|New |Open
CC|
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #9 from chri...@coraline.org ---
Thank you. That's clarified things. Is there any possibility of porting over
the Linux driver, please?
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--- Comment #8 from Andriy Gapon ---
In case I wasn't clear, real 6300ESB *chipset* contains two watchdogs. FreeBSD
supports only one of them while the qemu emulates the other.
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--- Comment #7 from Andriy Gapon ---
(In reply to christi from comment #6)
Please re-read my comments. ichwd supports a different watchdog module present
in the real 6300ESB, a so called TCO watchdog.
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #6 from chri...@coraline.org ---
That seems very odd. Looking at the current source for ichwd.c at
https://github.com/freebsd/freebsd-src/blob/main/sys/dev/ichwd/ichwd.c
Line 96 would appear to indicate the 6300esb is supported
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #5 from Andriy Gapon ---
Having looked at the 6300ESB datasheet, I believe that 0x25ab is a different
watchdog. It has a sufficiently different interface too.
So, the summary is:
- ichwd cannot support the qemu emulated watchd
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #4 from Andriy Gapon ---
I made a quick look at Linux code and there is an interesting thing.
Linux has drivers/watchdog/iTCO_wdt.c driver which is roughly equivalent to
FreeBSD ichwd and works approximately the same. It's a "p
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #3 from Andriy Gapon ---
(In reply to christi from comment #2)
Yes, that's how it works for physical hardware. The driver searches for an LPC
bridge devices instead of a watchdog device. Apparently the driver needs to
access c
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #2 from chri...@coraline.org ---
chip=0x25a18086 is not present. This may be because QEMU does not emulate the
entire i8300ESD chipset, just the watchdog device. If ichwd is detecting by
searching for the chipset rather than th
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
--- Comment #1 from Andriy Gapon ---
(In reply to christi from comment #0)
Could you please share full output of pciconf -v -l?
Is there chip=0x25a18086 in it?
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chri...@coraline.org changed:
What|Removed |Added
Hardware|Any |amd64
Severity|Aff
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259673
Bug ID: 259673
Summary: ichwd does not detect qemu i6300esb virtual watchdog
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
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