Re: No more floppy drive

In message: <412D12D4.1000401_at_root.org>
            Nate Lawson <nate_at_root.org> writes:
: Ruslan Ermilov wrote:
: > On Wed, Aug 25, 2004 at 04:17:33PM -0600, M. Warner Losh wrote:
: > 
: >>In message: <412D0E04.8040701_at_root.org>
: >>            Nate Lawson <nate_at_root.org> writes:
: >>: Ruslan Ermilov wrote:
: >>: > $ diff -u /sys/i386/conf/GENERIC.hints /boot/device.hints
: >>: > --- /sys/i386/conf/GENERIC.hints        Sat Apr  3 13:59:14 2004
: >>: > +++ /boot/device.hints  Thu Aug 26 00:32:55 2004
: >>: > _at__at_ -1,8 +1,8 _at__at_
: >>: >  # $FreeBSD: src/sys/i386/conf/GENERIC.hints,v 1.13 2004/04/01 21:48:31 alfred Exp $
: >>: > -hint.fdc.0.at="isa"
: >>: > -hint.fdc.0.port="0x3F0"
: >>: > -hint.fdc.0.irq="6"
: >>: > -hint.fdc.0.drq="2"
: >>: > +#hint.fdc.0.at="isa"
: >>: > +#hint.fdc.0.port="0x3F0"
: >>: > +#hint.fdc.0.irq="6"
: >>: > +#hint.fdc.0.drq="2"
: >>: >  hint.fd.0.at="fdc0"
: >>: >  hint.fd.0.drive="0"
: >>: >  hint.fd.1.at="fdc0"
: >>: 
: >>: Try commenting out the fd hints also.
: >>: 
: >>: > I got this:
: >>: > 
: >>: > $ dmesg |grep fdc
: >>: > fdc0: ic_type 90 part_id 73
: >>: > fdc0: <Enhanced floppy controller> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
: >>: > fdc0: ic_type 90 part_id 73
: >>: > fd0: <1440-KB 3.5" drive> on fdc0 drive 0
: >>: 
: >>: Good to see this is working.
: >>
: >>Generally one doesn't want ANY hints when one has pnpisabios or acpi
: >>supplying the hints, unless one really does have an exceptional device
: >>at that location.
: >>
: > 
: > A lot of current_at_ users report missing /dev/fd0 due to this.  Can this
: > be fixed somehow?
: 
: 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).

: I think the problem is that ISA is creating a duplicate fdc0 device via 
: the hints.  I'm not sure the best way to solve this.

By not having the fdc hints.

Warner