cvs commit: src/sys/dev/fdc fdc_acpi.c
andre at freebsd.org
Thu Jul 29 15:51:21 PDT 2004
Nate Lawson wrote:
> Andre Oppermann wrote:
> > Nate Lawson wrote:
> >>njl 2004-07-28 22:35:41 UTC
> >> FreeBSD src repository
> >> Modified files:
> >> sys/dev/fdc fdc_acpi.c
> >> Log:
> >> Fix ACPI floppy enumeration for three types of divergent behavior.
> >> * Some systems have _FDE and child floppy devices, but no _FDI. This seems
> >> to be compatible with the standard. Don't error out if there is no _FDI.
> >> Instead, continue on to the next device. The normal fd probe will take
> >> care of this device.
> >> * Some systems have _FDE but no child devices in AML. For these, add a
> >> second pass that compares the results of _FDE to the presence of devices.
> >> If not present, add the missing device.
> >> * Some BIOS authors didn't read the spec. They use tape drive values for
> >> all fdc(4) devices. Since this isn't grossly incompatible with the
> >> required boolean value, use them. They also define the _FDE items as a
> >> package instead of buffer. Regenerate the buffer from the package if it
> >> is present.
> >> Tested by: tjr, marcel
> > Is there any kind of feedback chain towards the BIOS authors so they might
> > fix it in the next release?
> A few people had success getting problems with a ServerWorks board fixed
> in the next BIOS revision. But most of the time, the chance is 0. All
> we can do is work around the issue (like here) or disable it for the
> given board (Windows often does this also).
And feeding it back to Phoenix etc.? Or don't they provide these parts of
the BIOS? I have no idea who does which parts of the BIOS.
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