The subject line is the same subject line as
kern/28856
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/28856
The above PR refers to an issue, with a workaround,
for 5.0-CURRENT
circa July 2001.
I have nearly the identical issue under 4.7-RELEASE.
I see an additional symptom, however, under my setup.
With a kernel
config that looks like this:
#device sio0 at isa? port IO_COM1 flags
0x10 irq 4
device sio0 at isa? port IO_COM1 flags
0x10 irq 11
#device sio2 at isa? disable port
IO_COM3 irq 5
#device sio3 at isa? disable port
IO_COM4 irq 9
A dmesg looks like this:
sio0: <3COM PCI FaxModem> port 0xec00-0xec07 irq 5
at device 10.0 on pci0
sio0: moving to sio2
sio2: type 16550A
...
sio0: configured irq 11 not in bitmap of probed irqs
0x10
sio0 at port 0x3f8-0x3ff irq 11 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
Note the 'sio0: moving to sio2' line. That's the new
symptom.
If I try to access sio0, I don't probe a modem.
If I try to access sio2, my machine wedges up tight.
I tried this with a stock kernel as well:
device sio0 at isa? port IO_COM1 flags
0x10 irq 4
device sio1 at isa? port IO_COM2 irq 3
device sio2 at isa? disable port IO_COM3
irq 5
device sio3 at isa? disable port IO_COM4
irq 9
yeilds:
sio0: <3COM PCI FaxModem> port 0xec00-0xec07 irq 5
at device 10.0 on pci0
sio0: moving to sio4
sio4: type 16550A
I've tried varying combos of the 'PnP BIOS' settings,
to no avail.
Of course, Win98 has no problem with the hardware,
as-is.
The idea of putting the modem on it's own IRQ (the
workaround in
the original PR) seems sound, but I'm being thwarted
by this 'sio0:
moving to sioN' behavior; I don't know why it's saying
that, and
I don't know which device I'm supposed to use for
access afterward...
'sioN' seems to always resolve to a higher number than
the number
of sio devices I configured in my kernel.
I'm seeing this problem described in a few other
places:
4.6.2-RELEASE-p2
http://www.atm.tut.fi/list-archive/freebsd-stable/msg05830.html
4.7-stable circa Oct 2002
http://www.geocrawler.com/mail/msg.php3?msg_id=10027753&list=152
but no one seems to be resolve it.
Does anyone have any new advice on this matter?
May not be new or a fix, but I had the same issues
with a Dell Dimension L566cx and sioN moving around,
and locking up the box (sharing IRQ)
uname -v
FreeBSD 4.7-STABLE #0: Sat Dec 7 21:58:02 EST 2002
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/FORTYTWO
dmesg <snip>
puc0: <US Robotics (3Com) 3CP5609 PCI 16550 Modem>
port 0xdff0-0xdff7 irq
10 at device 11.0 on pci1
sio0: type 16550A
uhci0: <Intel 82801AA (ICH) USB controller> port
0xef80-0xef9f irq 10 at d
evice 31.2 on pci0
sio1: configured irq 3 not in bitmap of probed irqs
0x10
sio1 at port 0x3f8-0x3ff irq 3 on isa0
sio1: type 16550A
and my kernel config looks like:
device sio1 at isa? port IO_COM1 irq 3
options CONSPEED=115200
device puc
options PUC_FASTINTR
I'm using the modem on:
set device /dev/cuaa0
I have PnP off in the BIOS, and the options pnpbios
out of the kernel.
All *seems* to be working fine now, (execpt for
multiple sound sources and the sysctl vchans kill all
sound *shrugs*) so I hope this may shed some light, or
offer some ideas.
(please c.c me, as I'm not on the list, thank you)
Jimmie James
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