Date: Wed, 25 Aug 2004 23:47:57 +0300 From: Ruslan Ermilov <ru@FreeBSD.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: current@FreeBSD.org Subject: Re: No more floppy drive Message-ID: <20040825204757.GD35529@ip.net.ua> In-Reply-To: <20040825105146.GA4897@ip.net.ua> References: <20040825103016.GA4600@ip.net.ua> <32352.1093430278@critter.freebsd.dk> <20040825105146.GA4897@ip.net.ua>
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On Wed, Aug 25, 2004 at 01:51:46PM +0300, Ruslan Ermilov wrote:
> On Wed, Aug 25, 2004 at 12:37:58PM +0200, Poul-Henning Kamp wrote:
> > I'm not sure you can debug this with the sysctl. You'll probably have
> > to stick in some printfs to find out where that two comes from.
> >
> I'll try that tonight, when I have more spare time. In the
> mean time, here's some info for consideration. The old
> kernel had this "fdc" related stuff:
>
> fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
> fdc0: FIFO enabled, 8 bytes threshold
> fd0: <1440-KB 3.5" drive> on fdc0 drive 0
>
> The new kernel (6.0-CURRENT as of yesterday) reports this:
>
> fdc0: ic_type 90 part_id 73
> fdc0: <Enhanced floppy controller> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
> device_attach: fdc0 attach returned 2
> fdc1: ic_type 90 part_id 73
> fdc1: <Enhanced floppy controller> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
> fdc1: ic_type 90 part_id 73
>
> Another odd thing is that I don't have fdc1 at all. This
> is an IBM ThinkPad 600X notebook with only one floppy
> controller. My floppy drive is physically attached.
>
OK, I wanted to play with the new fdc(4) a bit, to help you find
out what's wrong with it, so I took away "device fdc" from my
kernel config, recompiled, rebooted, and wanted to play with the
module. I found the following bugs:
1. If kernel has "device fdc", then "kldload fdc" will panic
a system.
2. If kernel doesn't have "device fdc", then "kldload fdc"
reports "fdc0: cannot allocate a port range (6 ports)".
Attempting to "kldunload fdc" results in a panic.
3. The fdc(4) seems to find a non-existing fdc1.
Verbose boot says the following about fdc:
: fdc0: ic_type 90 part_id 73
: fdc0: <Enhanced floppy controller> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
: device_attach: fdc0 attach returned 2
: fdc1: ic_type 90 part_id 73
: fdc1: <Enhanced floppy controller> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
: fdc1: ic_type 90 part_id 73
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: output ready timeout
: fdc1: input ready timeout
: fdc1: input ready timeout
: fdc1: output ready timeout
: fdc1: input ready timeout
: fdc1: input ready timeout
: fdc1: output ready timeout
: fdc1: input ready timeout
: fdc1: input ready timeout
: fdc1: output ready timeout
: fdc1: input ready timeout
: fdc1: input ready timeout
Can you please fix module loading/unloading so that I can play
with fdc further, to find the main reason? I really miss my
floppy back. ;)
Please also don't MFC it to RELENG_5 just yet.
Cheers,
--
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer
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