Timedout SCB on AIC-7892

[Chavdar Ivanov <ci4ic4%gmail.com@localhost>]

Hi,

I recently upgraded one of my NetBSD machines (HP Kayak XU800) to
-current, right now running 5.99.15 from 03/07/2009. Fairly often I am
getting:

ahc1: Timedout SCB already complete. Interrupts may not be functioning.
ahc1: board not responding

The still box responds to ping. The system is on the disk attached to
the Adaptec AIC-7892, so nothing else is possible except reset.

dmesg.boot follows:

Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 5.99.15 (GENERIC) #0: Fri Jul  3 06:43:33 BST 2009
        root@loan8:/f/obj/usr-current/i386/sys/arch/i386/compile/GENERIC
total memory = 511 MB
avail memory = 492 MB
timecounter: Timecounters tick every 10.000 msec
timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
Hewlett-Packard HP Kayak PC Workstation (XU800/800 )
mainbus0 (root)
cpu0 at mainbus0 apid 0: Intel 686-class, 797MHz, id 0x683
cpu1 at mainbus0 apid 1: Intel 686-class, 797MHz, id 0x683
ioapic0 at mainbus0 apid 2: pa 0xfec00000, version 20, 24 pins
acpi0 at mainbus0: Intel ACPICA 20080321
acpi0: X/RSDT: OemId <IBIS  ,HP_KAYAK,19990831>, AslId <MSFT,00000097>
acpi0: SCI interrupting at int 9
acpi0: fixed-feature power button present
timecounter: Timecounter "ACPI-Fast" frequency 3579545 Hz quality 1000
ACPI-Fast 24-bit timer
attimer1 at acpi0 (TMR, PNP0100): io 0x40-0x43 irq 0
pcppi1 at acpi0 (SPKR, PNP0800): io 0x61
midi0 at pcppi1: PC speaker (CPU-intensive output)
sysbeep0 at pcppi1
npx1 at acpi0 (COPR, PNP0C04): io 0xf0-0xff irq 13
npx1: reported by CPUID; using exception 16
pckbc1 at acpi0 (PS2M, PNP0F03) (aux port): irq 12
pckbc2 at acpi0 (PS2K, PNP0303) (kbd port): io 0x60,0x64 irq 1
FDC0 (PNP0700) at acpi0 not configured
UAR1 (PNP0501) at acpi0 not configured
UAR2 (PNP0501) at acpi0 not configured
ECP (PNP0401) at acpi0 not configured
FWH (INT0800) at acpi0 not configured
apm0 at acpi0: Power Management spec V1.2
attimer1: attached to pcppi1
pckbd0 at pckbc2 (kbd slot)
pckbc2: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
pms0 at pckbc2 (aux slot)
pckbc2: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: vendor 0x8086 product 0x1a21 (rev. 0x01)
pchb0: random number generator enabled
agp0 at pchb0: aperture at 0xe0000000, size 0x10000000
ppb0 at pci0 dev 1 function 0: vendor 0x8086 product 0x1a23 (rev. 0x01)
pci1 at ppb0 bus 5
pci1: i/o space, memory space enabled
vga1 at pci1 dev 0 function 0: vendor 0x1002 product 0x4148 (rev. 0x00)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation), using wskbd0
wsmux1: connecting to wsdisplay0
drm at vga1 not configured
vendor 0x1002 product 0x4168 (miscellaneous display) at pci1 dev 0
function 1 not configured
ppb1 at pci0 dev 2 function 0: vendor 0x8086 product 0x1a24 (rev. 0x01)
pci2 at ppb1 bus 3
pci2: i/o space, memory space enabled
ppb2 at pci2 dev 31 function 0: vendor 0x8086 product 0x1360 (rev. 0x02)
pci3 at ppb2 bus 4
pci3: i/o space, memory space enabled

<<<<
vendor 0x8086 product 0x1161 (interrupt system, interface 0x20,
revision 0x01) at pci3 dev 0 function 0 not configured
>>>>   Is this something to be worried about?

ahc1 at pci3 dev 9 function 0: Adaptec aic7892 Ultra160 SCSI adapter
ahc1: interrupting at ioapic0 pin 18
ahc1: aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
scsibus0 at ahc1: 16 targets, 8 luns per target
ppb3 at pci0 dev 30 function 0: vendor 0x8086 product 0x2418 (rev. 0x02)
pci4 at ppb3 bus 1
pci4: i/o space, memory space enabled
clcs0 at pci4 dev 5 function 0: vendor 0x1013 product 0x6003 (rev. 0x01)
clcs0: interrupting at ioapic0 pin 17
clcs0: ac97: Crystal CS4297A codec; headphone, 20 bit DAC, 18 bit ADC,
Crystal Semi 3D
clcs0: ac97: ext id 0x200<AMAP>
audio0 at clcs0: full duplex, independent
midi1 at clcs0: CS4280 MIDI UART
fxp0 at pci4 dev 8 function 0: Intel i82557 Ethernet, rev 1
fxp0: interrupting at ioapic0 pin 16
fxp0: May need receiver lock-up workaround
fxp0: Ethernet address 08:00:09:dc:f8:9c
nsphy0 at fxp0 phy 1: DP83840 10/100 media interface, rev. 0
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ppb4 at pci4 dev 11 function 0: vendor 0x3388 product 0x0021 (rev. 0x11)
pci5 at ppb4 bus 2
pci5: i/o space, memory space enabled
fwohci0 at pci5 dev 8 function 0: vendor 0x1033 product 0x00e7 (rev. 0x01)
fwohci0: interrupting at ioapic0 pin 19
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:00:4c:01:07:00:0e:bf
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
ieee1394if0 at fwohci0: IEEE1394 bus
fwip0 at ieee1394if0: IP over IEEE1394
fwohci0: Initiate bus reset
ohci0 at pci5 dev 9 function 0: vendor 0x1033 product 0x0035 (rev. 0x43)
ohci0: interrupting at ioapic0 pin 16
ohci0: OHCI version 1.0
usb0 at ohci0: USB revision 1.0
ohci1 at pci5 dev 9 function 1: vendor 0x1033 product 0x0035 (rev. 0x43)
ohci1: interrupting at ioapic0 pin 17
ohci1: OHCI version 1.0
usb1 at ohci1: USB revision 1.0
ehci0 at pci5 dev 9 function 2: vendor 0x1033 product 0x00e0 (rev. 0x04)
ehci0: interrupting at ioapic0 pin 18
ehci0: EHCI version 1.0
ehci0: companion controllers, 2 ports each: ohci0 ohci1
usb2 at ehci0: USB revision 2.0
ichlpcib0 at pci0 dev 31 function 0
ichlpcib0: vendor 0x8086 product 0x2410 (rev. 0x02)
timecounter: Timecounter "ichlpcib0" frequency 3579545 Hz quality 1000
ichlpcib0: 24-bit timer
ichlpcib0: TCO (watchdog) timer configured.
piixide0 at pci0 dev 31 function 1
piixide0: Intel 82801AA IDE Controller (ICH) (rev. 0x02)
piixide0: bus-master DMA support present
piixide0: primary channel wired to compatibility mode
piixide0: primary channel interrupting at ioapic0 pin 14
atabus0 at piixide0 channel 0
piixide0: secondary channel wired to compatibility mode
piixide0: secondary channel interrupting at ioapic0 pin 15
atabus1 at piixide0 channel 1
uhci0 at pci0 dev 31 function 2: vendor 0x8086 product 0x2412 (rev. 0x02)
uhci0: interrupting at ioapic0 pin 19
usb3 at uhci0: USB revision 1.0
ichsmb0 at pci0 dev 31 function 3: vendor 0x8086 product 0x2413 (rev. 0x02)
ichsmb0: interrupting at ioapic0 pin 17
iic0 at ichsmb0: I2C bus
isa0 at ichlpcib0
lpt0 at isa0 port 0x378-0x37b irq 7
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fwohci0: BUS reset
fwohci0: node_id=0xc000ffc0, gen=1, CYCLEMASTER mode
ieee1394if0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
ieee1394if0: bus manager 0 (me)
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
scsibus0: waiting 2 seconds for devices to settle...
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
uhub0 at usb0: vendor 0x1033 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1 at usb1: vendor 0x1033 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhub2 at usb2: vendor 0x1033 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 4 ports with 4 removable, self powered
uhub3 at usb3: vendor 0x8086 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
wd0 at atabus0 drive 0: <IC35L060AVER07-0>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 58644 MB, 119150 cyl, 16 head, 63 sec, 512 bytes/sect x 120103200 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd1 at atabus0 drive 1: <WDC WD400BB-23JHA1>
wd1: drive supports 16-sector PIO transfers, LBA addressing
wd1: 38162 MB, 77536 cyl, 16 head, 63 sec, 512 bytes/sect x 78156288 sectors
wd1: 32-bit data port
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd0(piixide0:0:0): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using DMA)
wd1(piixide0:0:1): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using DMA)
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 1: <Hewlett-Packard DVD Writer 200, CN23S4590J,
1.36> cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
wd2 at atabus1 drive 0: <IC35L060AVER07-0>
wd2: drive supports 16-sector PIO transfers, LBA addressing
wd2: 58644 MB, 119150 cyl, 16 head, 63 sec, 512 bytes/sect x 120103200 sectors
wd2: 32-bit data port
wd2: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd2(piixide0:1:0): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using DMA)
cd0(piixide0:1:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA)
sd0 at scsibus0 target 0 lun 0: <FUJITSU, MAN3184MP, 5507> disk fixed
sd0: 17366 MB, 29694 cyl, 2 head, 598 sec, 512 bytes/sect x 35566478 sectors
sd0: sync (12.50ns offset 127), 16-bit (160.000MB/s) transfers, tagged queueing
Kernelized RAIDframe activated
pad0: outputs: 44100Hz, 16-bit, stereo
audio1 at pad0: half duplex
boot device: sd0
root on sd0a dumps on sd0b
/: replaying log to memory
root file system type: ffs
/: replaying log to disk
/var: replaying log to disk
arp info overwritten for 10.0.0.123 by 00:0e:2e:ed:89:a7
/usr: replaying log to disk
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
/home: replaying log to disk
/d: replaying log to disk
/usr/pkg: replaying log to disk
/f: replaying log to disk

This has never happened prior to the upgrade (the system ran 4.99.72
for a long time).

Any ideas? I searched a bit; did see a suggestion to disable ACPI,
which I wouldn't want as it is a dual CPU system.

Chavdar Ivanov
-- 
----
A. P. Herbert  - "A high-brow is someone who looks at a sausage and
thinks of Picasso." -
http://www.brainyquote.com/quotes/authors/a/a_p_herbert.html