Date: Wed, 25 Aug 2004 16:28:07 -0700 From: Nate Lawson <nate@root.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: current@freebsd.org Subject: Re: No more floppy drive Message-ID: <412D2087.4000306@root.org> In-Reply-To: <20040825.163521.103131991.imp@bsdimp.com> References: <20040825.161733.103236573.imp@bsdimp.com> <20040825222345.GB79209@ip.net.ua> <412D12D4.1000401@root.org> <20040825.163521.103131991.imp@bsdimp.com>
next in thread | previous in thread | raw e-mail | index | archive | help
M. Warner Losh wrote: > In message: <412D12D4.1000401@root.org> > Nate Lawson <nate@root.org> writes: > : There are only two ways currently to find fd0 on ISA systems: ACPI _FDE > : probing and hints. The acpi probe automatically falls back to the hints > : system if _FDE fails so you should leave the hint.fd.0 lines in but > : comment out hint.fdc lines (as you've done). > > I think this is a bad idea, but may be what we have to do for 5.3. We > can find out what drives are on the system by asking the rtc() if > there's no _FDE, which is what the old, pre-acpi code did (which is > why people are seeing their drives disappear now). This is incorrect. The acpi commits did not remove any rtc probe; there never was one. There were only two commits by me to fdc.c so check them out to see what I mean. All I did was move the existing hints probe into its own function, fdc_hints_probe(). The easiest way to see how fdX gets probed is to look for callers to fdc_add_child(). They are fdc_acpi_probe_children() and fdc_hints_probe(). The latter is called by the ISA attachment or the ACPI attachment if the _FDE method is not present. (BTW, it seems the pccard attachment doesn't probe this way?) -- Nate
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?412D2087.4000306>