Date: Tue, 6 Jun 2000 15:18:10 -0600 From: Chris Wasser <cwasser@v-wave.com> To: bright@wintelcom.net, "" <freebsd-questions@freebsd.org> Subject: Re: Multiple LPT Ports: Second Posting Message-ID: <SAK.2000.06.06.ocsfgcdh@area51>
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Nah, no irq misassignment in my boxes. I always make sure each device has
it's own IRQ that isn't shared (save for this LPT issue) so that's not
it. I'll include a dmesg for thoroughness (no verbose output tho, just
standard dmesg)
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 4.0-STABLE #0: Thu Jun 1 13:43:21 MDT 2000
root@:/usr/src/sys/compile/DEEPTHOUGHT
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 551252036 Hz
CPU: Pentium III/Pentium III Xeon (551.25-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x673 Stepping = 3
Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,
CMOV,PAT,PSE36,MMX,FXSR,XMM>
real memory = 268435456 (262144K bytes)
config> q
avail memory = 258211840 (252160K bytes)
Preloaded elf kernel "kernel" at 0xc02b5000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc02b509c.
VESA: v2.0, 2048k memory, flags:0x0, mode table:0xc0264da2 (1000022)
VESA: ATI MACH64
Pentium Pro MTRR support enabled
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device 1.0 on
pci0
pci1: <PCI bus> on pcib1
isab0: <Intel 82371AB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 ATA33 controller> port 0xf000-0xf00f at device 7.1
on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xe000-0xe01f irq
10 at device 7.2 on pci0
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
ulpt0: vendor 0x0729 product 0x1284, rev 1.00/1.04, addr 2, iclass 7/1
chip1: <Intel 82371AB Power management controller> port 0x5000-0x500f at
device 7.3 on pci0
xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xe400-0xe47f mem
0xe0002000-0xe000207f irq 5 at device 9.0 on pci0
xl0: Ethernet address: 00:50:da:cc:f3:e0
miibus0: <MII bus> on xl0
xlphy0: <3c905C 10/100 internal PHY> on miibus0
xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
dc0: <LC82C115 PNIC II 10/100BaseTX> port 0xe800-0xe8ff mem 0xe0000000-
0xe00000ff irq 9 at device 13.0 on pci0
dc0: Ethernet address: 00:a0:cc:32:eb:7c
miibus1: <MII bus> on dc0
dcphy0: <Intel 21143 NWAY media interface> on miibus1
dcphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pci0: <ATI Mach64-GV graphics accelerator> at 17.0 irq 3
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> on isa0
sc0: VGA <16 virtual consoles, flags=0x200>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
IP Filter: initialized. Default = pass all, Logging = enabled
IP Filter: v3.3.8
ad0: 19609MB <QUANTUM FIREBALLP KX20.5> [39842/16/63] at ata0-master
using UDMA33
ad1: 19609MB <QUANTUM FIREBALLP KX20.5> [39842/16/63] at ata0-slave using
UDMA33
acd0: CDROM <ASUS CD-S500/A> at ata1-master using UDMA33
Mounting root from ufs:/dev/ad0s1a
lpt0: switched to polled standard mode
Although, I have noticed alot of these:
xl0: transmission error: 90
xl0: tx underrun, increasing tx start threshold to 120 bytes
xl0: transmission error: 90
xl0: tx underrun, increasing tx start threshold to 180 bytes
As well as TX Underruns for Linksys LNE100TX cards. Perhaps there is a
h/w issue going on there, I read somewhere it may be bus contention (PCI
2.1 spec is enabled via BIOS) .. I did notice an improvement when I took
out a ATI AGP video card and replaced it with a ATI PCI video card oddly
enough, the TX underrun error warnings dropped from 5-6 warnings down to
just 2 conducting the same tests (xferring a 7gb tarball across network)
This board from the above dmesg is actually a Abit BE6-II with the HPT366
ATA-66 controller but I didn't enable it on this machine.
On the other hand, since I started running one of my printers from USB
(parallell to usb adapter), preformance on the printer has improved quite
dramatically.
Original message from: Alfred Perlstein
>* Chris Wasser <cwasser@v-wave.com> [000606 13:42] wrote:
>> I'll try that (in all certainty, I should have realized
>> this long ago) however, I do have a problem with
>> parallel ports under BSD regardless as it is, it would
>> seem that interrupt-mode doesn't play nicely with any of
>> the ports I've tried (from 486-class all the way to
>> Athlon) and the ports have to be put into polling mode
>> otherwise they print so slowly, I can get out and walk
>> faster so-to-speak. I've read somewhere that EPP mode
>> produces the best results for printing under BSD, I've
>> gone this route with onboard ports trying interrupt-mode
>> but produces the same result.
>
>this reeks of an IRQ misassignment.
>
>-Alfred
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