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Date:      Mon, 18 Nov 1996 14:34:12 +0100
From:      Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>
To:        freebsd-hackers@freefall.FreeBSD.org, freebsd-scsi@freebsd.org
Subject:   aic0 (/dev/rst0) problem
Message-ID:  <199611181334.OAA20811@gilberto.physik.rwth-aachen.de>

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After a hard time getting two WD8013EPC cards working in my router box
with the aic0 driver/card present (had to wire the cards to different
ports/irqs/iomem) I'm still having problems getting the tape
working:

FreeBSD 2.2-CURRENT #0: Mon Nov 18 13:52:01 MET 1996
    kuku@bach.physik.rwth-aachen.de:/usr/src/sys/compile/CGATE
Calibrating clock(s) relative to mc146818A clock...
i8254 clock: 1193402 Hz
CPU: i486DX (486-class CPU)                         #it's an Amd 486/40 CPU
real memory  = 8650752 (8448K bytes)
avail memory = 6881280 (6720K bytes)
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: MDA/hercules <16 virtual consoles, flags=0x0>  # Hercules(!)
ed0 at 0x200-0x21f irq 4 maddr 0xd0000 msize 16384 on isa # having this at
ed0: address 00:00:c0:fe:34:0a, type WD8013EPC (16 bit)   # 0x300 made the
ed1 at 0x280-0x29f irq 3 maddr 0xd8000 msize 16384 on isa # card defunct
ed1: address 00:00:c0:10:1b:1e, type WD8013EPC (16 bit) 
lpt0 at 0x3bc-0x3c3 irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
aic0 at 0x340-0x35f irq 11 on isa
(aic0:3:0): "HP HP35470A T503" type 1 removable SCSI 2
st0(aic0:3:0): Sequential-Access density code 0x13, variable blocks, write-enabled
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: NEC 765
fd0: 1.44MB 3.5in
fd1: 1.2MB 5.25in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <Maxtor 7080 AT>
wd0: 81MB (166770 sectors), 981 cyls, 10 heads, 17 S/T, 512 B/S
npx0 on motherboard
npx0: INT 16 interface
st0(aic0:3:0): timed out     # <<<< This is the result of a tar cvf /dev/rst0 /
st0(aic0:3:0): timed out

And the system hangs at the tar command:

# tar cvf /dev/rst0 /
^C^Cst0: not ready      (after a while)

Is there anything special to that HP DAT drive? Blocksize which the driver
cannot cope with? Compression on/off? I believe the driver is working in
polled modes, at least not DMA driven. The board doesn't have busmaster
DMA logic and the motherboard DMA doesn't seem (yet) implemented in the
driver.


--Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de



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