Nick,
I think you may be correct in your assumption that the HP Kayak implementation
of the AIC 7880 is a bit flaky. I enabled drive-powered termination and even
swapped the drive out for another of a different type, but the problem
remained.
There are no additional terminators in the chain apart from the end-of-cable
lump and whatever is or isn't enabled on the drive itself.
It doesn't apparently affect performance, so I'll leave it be.
Thanks for your analysis.
Regards,
Dan.
--- Nick Holland <[EMAIL PROTECTED]> wrote:
> Daniel Hammett wrote:
> ...>
> > "ahc0: Illegal cable configuration!!. Only two connectors on the adapter
> may be
> > used at a time!"
> >
> > [Full dmesg posted below]
>
> yay! :)
>
> > This isn't unique to OpenBSD: I've seen similar reports in the dmesg from
> SuSE
> > Linux using the 2.4.xx series kernels and also from FreeBSD version 6.
> >
> > It doesn't appear to affect the machine in anyway that I can tell, e.g.
> there
> > are no unexpected hangs, slowdowns, disk problems, etc.
> >
> > The AIC-7880 wide SCSI is connnected to a single disk but there are
> multiple
> > (unused) connectors on the ribbon cable which end in a terminator block.
> >
> > The AIC-7860 narrow SCSI is connected to a single CD-RW drive. Again, there
> are
> > multiple (unused) connectors on the ribbon cable and this, too, ends in a
> > terminator block.
>
> this isn't the issue, as that's ahc1 according to the dmesg.
>
> > I have used multiple drives in the system and the same message appears.
> >
> > It occurs to me that there might be some issue with the disk drive itself
> > providing SCSI termination, or some other jumper configuration error.
> >
> > Alternatively, doe this message imply that I can only use either the
> AIC-7860
> > or the AIC-7880 but not both? I might try unplugging the CD-RW before
> booting
> > this evening.
>
> nope, again, ahc0 and ahc1 are two different devices, if it is whining
> about X, the problem is with X. Probably. :)
>
> As I recall, there are some variants of the Adaptec cards that use the
> ahc(4) driver that are kinda...curious. I think it is the 29160 (or
> some variant) which has both LVD U160 and a single-ended U2, plus a 50
> pin connector...and the rule is, you can use two of the three
> connectors, but not all three at the same time. I may be misremembering
> this...it might involve the external connector on the spine of the card,
> rather than the 50 pin connector. But the rule was..only two of the
> connectors. And note: it's the connectors in use, not the number of
> devices attached.
>
> As I recall, all it can do is look for terminators. If it finds more
> terminators than it expects, it apparently sets a "whine" flag that the
> driver looks for. Are there any extra terminators on the system? You
> indicate the cable has a terminator...could the drive also be
> terminated? Also make sure any unused SCSI connectors are just left
> unconnected.
>
> Otherwise...if everything is correct, and performance is appropriate,
> don't worry about it...probably a "quirk" in implementation on this
> machine. I don't recall ever seeing any ability to see messages like
> this under Windows, so I suspect HP may have been a little sloppy about
> how they implemented things.
>
> Nick.
>
>
> > --- dmesg included --->
> >
> > OpenBSD 3.9 (GENERIC.MP) #598: Thu Mar 2 02:37:06 MST 2006
> > [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC.MP
> > cpu0: Intel Pentium II ("GenuineIntel" 686-class, 512KB L2 cache) 300 MHz
> > cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,MMX
> > real mem = 536453120 (523880K)
> > avail mem = 482435072 (471128K)
> > using 4278 buffers containing 26927104 bytes (26296K) of memory
> > mainbus0 (root)
> > bios0 at mainbus0: AT/286+(a1) BIOS, date 10/28/98, BIOS32 rev. 0 @ 0xfd77d
> > apm0 at bios0: Power Management spec V1.2
> > apm0: AC on, battery charge unknown
> > apm0: flags 30102 dobusy 0 doidle 1
> > pcibios0 at bios0: rev 2.1 @ 0xfd710/0x8f0
> > pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf20/192 (10 entries)
> > pcibios0: PCI Interrupt Router at 000:07:0 ("Intel 82371FB ISA" rev 0x00)
> > pcibios0: PCI bus #1 is the last bus
> > bios0: ROM list: 0xc0000/0x8000 0xc8000/0x4800
> > mainbus0: Intel MP Specification (Version 1.4) (HP XU/XW )
> > cpu0 at mainbus0: apid 1 (boot processor)
> > cpu0: apic clock running at 66 MHz
> > cpu1 at mainbus0: apid 0 (application processor)
> > cpu1: Intel Pentium II ("GenuineIntel" 686-class, 512KB L2 cache) 300 MHz
> > cpu1: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,MMX
> > mainbus0: bus 0 is type PCI
> > mainbus0: bus 1 is type PCI
> > mainbus0: bus 2 is type ISA
> > ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
> > pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> > pchb0 at pci0 dev 0 function 0 "Intel 82443LX AGP" rev 0x03
> > ppb0 at pci0 dev 1 function 0 "Intel 82443LX AGP" rev 0x03
> > pci1 at ppb0 bus 1
> > vga1 at pci1 dev 0 function 0 "Matrox MGA G400/G450 AGP" rev 0x04
> > wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> > wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> > pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x01
> > pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel
> 0
> > wired to compatibility, channel 1 wired to compatibility
> > atapiscsi0 at pciide0 channel 0 drive 0
> > scsibus0 at atapiscsi0: 2 targets
> > cd0 at scsibus0 targ 0 lun 0: <MATSHITA, CD-ROM CR-585, ZP18> SCSI0 5/cdrom
> > removable
> > cd0(pciide0:0:0): using PIO mode 0, DMA mode 1
> > pciide0: channel 1 ignored (disabled)
> > uhci0 at pci0 dev 7 function 2 "Intel 82371AB USB" rev 0x01: apic 2 int 19
> (irq
> > 11)
> > usb0 at uhci0: USB revision 1.0
> > uhub0 at usb0
> > uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
> > uhub0: 2 ports with 2 removable, self powered
> > piixpm0 at pci0 dev 7 function 3 "Intel 82371AB Power" rev 0x01: SMI
> > iic0 at piixpm0
> > "unknown" at iic0 addr 0x2d not configured
> > lmtemp0 at iic0 addr 0x48: lm75
> > ahc0 at pci0 dev 8 function 0 "Adaptec AIC-7880" rev 0x01: apic 2 int 16
> (irq
> > 11)
> > ahc0: Illegal cable configuration!!. Only two connectors on the adapter may
> be
> > used at a time!
> > scsibus1 at ahc0: 16 targets
> > sd0 at scsibus1 targ 3 lun 0: <SEAGATE, ST318404LW, 0006> SCSI3 0/direct
> fixed
> > sd0: 17501MB, 14384 cyl, 6 head, 415 sec, 512 bytes/sec, 35843670 sec total
> > ahc1 at pci0 dev 9 function 0 "Adaptec AIC-7860" rev 0x03: apic 2 int 19
> (irq
> > 11)
> > scsibus2 at ahc1: 8 targets
> > cd1 at scsibus2 targ 2 lun 0: <HP, CD-Writer+ 9200, 1.0e> SCSI4 5/cdrom
> > removable
> > rl0 at pci0 dev 18 function 0 "Realtek 8139" rev 0x10: apic 2 int 16 (irq
> 11),
> > address 00:10:a7:14:ef:bf
> > rlphy0 at rl0 phy 0: RTL internal PHY
> > isa0 at pcib0
> > isadma0 at isa0
> > pckbc0 at isa0 port 0x60/5
> > pckbd0 at pckbc0 (kbd slot)
> > pckbc0: using irq 1 for kbd slot
> > wskbd0 at pckbd0: console keyboard, using wsdisplay0
> > pms0 at pckbc0 (aux slot)
> > pckbc0: using irq 12 for aux slot
> > wsmouse0 at pms0 mux 0
> > mpu0 at isa0 port 0x300/2: generic MPU-401 compatible
> > midi0 at mpu0: <MPU-401 MIDI UART>
> > sb0 at isa0 port 0x220/24 irq 5 drq 1: dsp v3.02
> > midi1 at sb0: <SB MIDI UART>
> > audio0 at sb0
> > opl0 at sb0: model OPL3
> > midi2 at opl0: <SB Yamaha OPL3>
> > pcppi0 at isa0 port 0x61
> > midi3 at pcppi0: <PC speaker>
> > spkr0 at pcppi0
> > lpt0 at isa0 port 0x378/4 irq 7
> > npx0 at isa0 port 0xf0/16: using exception 16
> > pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> > pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> > fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> > fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> > biomask 0 netmask 0 ttymask 0
> > ioapic0: pin 16 shares different IPL interrupts (40..50), degraded
> performance
> > pctr: 686-class user-level performance counters enabled
> > mtrr: Pentium Pro MTRR support
> > apm0: disconnected
> > ahc0: target 3 using 16bit transfers
> > ahc0: target 3 synchronous at 20.0MHz, offset = 0x8
> > dkcsum: sd0 matches BIOS drive 0x80
> > root on sd0a
> > rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
> >
> > --- end of dmesg ---<
> >
> >
> > ---------------------
> > Dan Hammett
> > [EMAIL PROTECTED]
>
>
---------------------
Dan Hammett
[EMAIL PROTECTED]
