>Number: 57350
>Category: kern
>Synopsis: kernel panics when using old monocrome printer port (IO_LPT3 / 0x3bc)
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Sep 29 06:20:13 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator: Matthias Meyser
>Release: FreeBSD 4.9-RC i386
>Organization:
XeNET GmbH, Clausthal
>Environment:
System: FreeBSD ripper.intern 4.9-RC FreeBSD 4.9-RC #1: Mon Sep 29 13:16:30 CEST 2003 root@fbsd.intern:/usr/obj/usr/src/sys/RIPPER i386
PI 233 machine with 3 LPT Ports at 0x378, 0x278 and 0x3bc
all without irq.
>Description:
If I inklude the following lines
----------------------------------8<--------------------------------
# Parallel port
device ppc2 at isa? port IO_LPT3
device ppbus # Parallel port bus (required)
----------------------------------8<--------------------------------
in my custoim kernel. The system panics during boot. This happens
when normaly the ppc ports are detected.
----------------------------------8<--------------------------------
# Parallel port
device ppc1 at isa? port IO_LPT1
device ppbus # Parallel port bus (required)
device ppc2 at isa? port IO_LPT2
device ppbus # Parallel port bus (required)
----------------------------------8<--------------------------------
makes no problem, but adding IO_LPT3 traps kernel.
If I boot with GENERIC kernel I geht the following output
----------------------------------8<--------------------------------
cannot reserve I/O port range
----------------------------------8<--------------------------------
and no LPT port ist detected.
booting with my old kernel (same kernelconfig)
----------------------------------8<--------------------------------
Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.8-STABLE #8: Fri Jun 20 21:06:01 CEST 2003
root@fbsd.intern:/usr/obj/usr/src/sys/RIPPER
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium/P55C (233.86-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x543 Stepping = 3
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
[...]
ppc0: <Parallel port> at port 0x378-0x37f on isa0
ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
lpt0: <Printer> on ppbus0
lpt0: Polled port
ppc1: <Parallel port> at port 0x278-0x27f on isa0
ppc1: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc1: FIFO with 7/0/5 bytes threshold
lpt1: <Printer> on ppbus1
lpt1: Polled port
ppc2: <Parallel port> at port 0x3bc-0x3bf on isa0
ppc2: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus2: IEEE1284 device found /NIBBLE/ECP
Probing for PnP devices on ppbus2:
ppbus2: <Hewlett-Packard HP LaserJet 6P> PJL,MLC,PCLXL,PCL
lpt2: <Printer> on ppbus2
lpt2: Polled port
----------------------------------8<--------------------------------
>How-To-Repeat:
Install a monocrome printer card (IO_LPT3,0x3bc) and configure
your kernel to use it.
>Fix:
If memory serves my right, this is caused by trying to reserve an extended
I/O space (8 instead of 4 Bytes) for LPT3 (0x3bc). I think I had the same problem
back in 1997 with FreeBSD 2.2.4
The Fix is to NOT try to reserve this extended I/O space for IP_LPT3
>Release-Note:
>Audit-Trail:
>Unformatted:
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