Date: Thu, 10 Jul 1997 12:09:22 +0530 From: koshy@india.hp.com To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/4071: Writing SCSI tape fails: DMA beyond end of ISA Message-ID: <199707100640.XAA24078@palrel3.hp.com> Resent-Message-ID: <199707100651.XAA10704@hub.freebsd.org>
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>Number: 4071
>Category: kern
>Synopsis: Accessing /dev/rst0 causes `DMA beyond end of ISA' errors
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jul 9 23:50:02 PDT 1997
>Last-Modified:
>Originator: Joseph Koshy
>Organization:
Hewlett-Packard ISO Bangalore
>Release: FreeBSD 3.0-CURRENT i386
>Environment:
A 32MB machine running -current of July 1st week vintage. An AHA1542CF
controller as the SCSI adapter, and a HP 2GB DAT drive.
FreeBSD krill.india.hp.com 3.0-CURRENT FreeBSD 3.0-CURRENT #0: \
Tue Jul 8 10:36:25 IST 1997 \
root@krill.india.hp.com:/usr/src/sys/compile/KRILL i386
>Description:
Accessing /dev/rst0 causes I/O's to abort with `DMA beyond end of ISA' errors.
Jul 10 12:31:32 krill /kernel: aha0: DMA beyond end Of ISA: 0x1f86d08
Jul 10 12:31:32 krill /kernel: st0: bad request, must be between 0 and 0
The kernel has BOUNCE_BUFFERS configured. The problem was not present in
-current kernels of April 1997 vintage.
Disk access to SD0 works OK (touch wood).
Kernel DMESG output:
Copyright (c) 1992-1997 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.0-CURRENT #0: Tue Jul 8 10:36:25 IST 1997
root@krill.india.hp.com:/usr/src/sys/compile/KRILL
CPU: Pentium (90.00-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x525 Stepping=5
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 33554432 (32768K bytes)
avail memory = 30396416 (29684K bytes)
Probing for devices on PCI bus 0:
chip0: <Host to PCI bridge (vendor=1004 device=0005)> rev 0x01 on pci0.0.0
chip1: <PCI to ISA bridge (vendor=1004 device=0006)> rev 0x01 on pci0.1.0
vga0: <VGA-compatible display device> rev 0x2d int a irq 9 on pci0.5.0
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
ed0 at 0x300-0x31f irq 15 on isa
ed0: address 08:00:09:d9:d3:f9, type HP-PCLAN+ (32-bit regular IO)
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
psm0 at 0x60-0x64 irq 12 on motherboard
psm0: device ID 0
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: NEC 72065B
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <QUANTUM MAVERICK 540A>
wd0: 516MB (1057392 sectors), 1049 cyls, 16 heads, 63 S/T, 512 B/S
aha0 at 0x330-0x333 irq 11 drq 5 on isa
scbus0 at aha0 bus 0
st0 at scbus0 target 3 lun 0
st0: <HP HP35480A 1109> type 1 removable SCSI 2
st0: Sequential-Access density code 0x13, drive empty
sd0 at scbus0 target 4 lun 0
sd0: <SEAGATE ST32151N HP01> type 0 fixed SCSI 2
sd0: Direct-Access 2048MB (4194685 512 byte sectors)
npx0 on motherboard
npx0: INT 16 interface
And these are some error messages:
aha0: DMA beyond end Of ISA: 0x194fd08
st0: bad request, must be between 0 and 0
aha0: DMA beyond end Of ISA: 0x12d0d08
st0: bad request, must be between 0 and 0
aha0: DMA beyond end Of ISA: 0x1f86d08
st0: bad request, must be between 0 and 0
>How-To-Repeat:
Build a -current kernel with an AHA adapter (other ISA SCSI controllers should
be ok too) and try to access the tape drive. The machine should have >16MB
memory.
>Fix:
No workaround/fix known, sorry.
>Audit-Trail:
>Unformatted:
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