strange statistics about ohci with systat and top

[Andrei Kolu]

On Tuesday 25 March 2008 14:39:01 Andrei Kolu wrote:
> Anyone notice anything strange here? Why ohci (usb) got so huge number of
> interrupts? Even if I have no usb devices connected to this box.
>
> 39.6%Sys  37.9%Intr  0.0%User  0.0%Nice 22.5%Idle
>
> # systat -vm
>
> Interrupts
> 101k total
> 96514 ohci0 ohci
> ata0 irq14
> 587 twa0 irq16
> em1 irq25
> 2000 cpu0: time
> 2000 cpu1: time
>
> FreeBSD 7.0-STABLE-200803 #0: Mon Mar 10 18:53:59 UTC 2008
>
> That irq problem was detected originally with ps/2 keyboard without any usb
> device attached (dmesg info here is taken later). And I tried to use usb
> flash drive but it was showing up like umass0 storage and was unable to
> mount it normally (I can use it on 6.2, 6.3 and 7.0 versions just fine
> though). Maybe something is wrong with freebsd kernel udev implementation-
> I got twa device (that is 3ware sata raid controller) but my system
> recognizes this raid as da0 disk....
>
> How can I resolve this problem? By disabling USB in bios?
> Board is Tyan S3870
> http://tyan.com/support_download_bios.aspx?model=B.GT20B3870
> Latest motherboard bios and and raid controller firmware applied.
>
> On same motherboard FreeBSD-s version 6.2, 6.3 and 7.0 (32 and 64 bit) hang
> during initial boot- only version that worked is latest stable 7.
>
> ---------------------------------------------------------------------------
>--- # dmesg
> Copyright (c) 1992-2008 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>         The Regents of the University of California. All rights reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 7.0-STABLE-200803 #0: Mon Mar 10 18:53:59 UTC 2008
>     root at driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Dual Core AMD Opteron(tm) Processor 270 (1995.01-MHz K8-class CPU)
>   Origin = "AuthenticAMD"  Id = 0x20f12  Stepping = 2
>  
> Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MC
>A,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT> Features2=0x1<SSE3>
>   AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow!+,3DNow!>
>   AMD Features2=0x3<LAHF,CMP>
>   Cores per package: 2
> usable memory = 2134601728 (2035 MB)
> avail memory  = 2059890688 (1964 MB)
> ACPI APIC Table: <A M I  OEMAPIC >
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
> MADT: Forcing active-low polarity and level trigger for SCI
> ioapic0 <Version 1.1> irqs 0-15 on motherboard
> ioapic1 <Version 1.1> irqs 16-31 on motherboard
> ioapic2 <Version 1.1> irqs 32-47 on motherboard
> kbd1 at kbdmux0
> ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
> acpi0: <A M I OEMXSDT> on motherboard
> acpi0: [ITHREAD]
> acpi0: Power Button (fixed)
> acpi0: Sleep Button (fixed)
> acpi0: reservation of 0, a0000 (3) failed
> acpi0: reservation of 100000, 7ff00000 (3) failed
> Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
> acpi_timer0: <32-bit timer at 3.579545MHz> port 0x508-0x50b on acpi0
> cpu0: <ACPI CPU> on acpi0
> powernow0: <Cool`n'Quiet K8> on cpu0
> cpu1: <ACPI CPU> on acpi0
> powernow1: <Cool`n'Quiet K8> on cpu1
> pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
> pci0: <ACPI PCI bus> on pcib0
> pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
> pci1: <ACPI PCI bus> on pcib1
> pcib2: <ACPI PCI-PCI bridge> at device 13.0 on pci1
> pci2: <ACPI PCI bus> on pcib2
> 3ware device driver for 9000 series storage controllers, version:
> 3.70.05.001 twa0: <3ware 9000 series Storage Controller> port 0xcc00-0xcc3f
> mem 0xf4000000-0xf5ffffff,0xff3ff000-0xff3fffff irq 16 at device 3.0 on
> pci2 twa0: [ITHREAD]
> twa0: INFO: (0x15: 0x1300): Controller details:: Model 9550SX-4LP, 4 ports,
> Firmware FE9X 3.08.00.016, BIOS BE9X 3.08.00.004
> atapci0: <ServerWorks HT1000 UDMA100 controller> port
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 2.1 on pci0
> ata0: <ATA channel 0> on atapci0
> ata0: [ITHREAD]
> ata1: <ATA channel 1> on atapci0
> ata1: [ITHREAD]
> isab0: <PCI-ISA bridge> at device 2.2 on pci0
> isa0: <ISA bus> on isab0
> ohci0: <OHCI (generic) USB controller> port 0xe000-0xe0ff mem
> 0xff6b8000-0xff6b8fff irq 10 at device 3.0 on pci0
> ohci0: [GIANT-LOCKED]
> ohci0: [ITHREAD]
> usb0: OHCI version 1.0, legacy support
> usb0: SMM does not respond, resetting
> usb0: <OHCI (generic) USB controller> on ohci0
> usb0: USB revision 1.0
> uhub0: <(0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
> uhub0: 2 ports with 2 removable, self powered
> ohci1: <OHCI (generic) USB controller> port 0xe400-0xe4ff mem
> 0xff6b9000-0xff6b9fff irq 10 at device 3.1 on pci0
> ohci1: [GIANT-LOCKED]
> ohci1: [ITHREAD]
> usb1: OHCI version 1.0, legacy support
> usb1: SMM does not respond, resetting
> usb1: <OHCI (generic) USB controller> on ohci1
> usb1: USB revision 1.0
> uhub1: <(0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
> uhub1: 2 ports with 2 removable, self powered
> ehci0: <EHCI (generic) USB 2.0 controller> port 0xe800-0xe8ff mem
> 0xff6ba000-0xff6bafff irq 10 at device 3.2 on pci0
> ehci0: [GIANT-LOCKED]
> ehci0: [ITHREAD]
> usb2: EHCI version 1.0
> usb2: companion controllers, 2 ports each: usb0 usb1
> usb2: <EHCI (generic) USB 2.0 controller> on ehci0
> usb2: USB revision 2.0
> uhub2: <(0x1166) EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb2
> uhub2: 4 ports with 4 removable, self powered
> em0: <Intel(R) PRO/1000 Network Connection Version - 6.7.3> port
> 0xdc00-0xdc3f mem 0xff680000-0xff69ffff,0xff660000-0xff67ffff irq 24 at
> device 4.0 on pci0 em0: Ethernet address: 00:e0:81:41:3e:5c
> em0: [FILTER]
> em1: <Intel(R) PRO/1000 Network Connection Version - 6.7.3> port
> 0xd880-0xd8bf mem 0xff620000-0xff63ffff,0xff600000-0xff61ffff irq 25 at
> device 5.0 on pci0 em1: Ethernet address: 00:e0:81:41:3e:5d
> em1: [FILTER]
> vgapci0: <VGA-compatible display> port 0xec00-0xec7f mem
> 0xf8000000-0xfbffffff,0xff6c0000-0xff6fffff at device 6.0 on pci0
> acpi_button0: <Power Button> on acpi0
> sio0: configured irq 4 not in bitmap of probed irqs 0
> sio0: port may not be enabled
> sio0: configured irq 4 not in bitmap of probed irqs 0
> sio0: port may not be enabled
> sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
> acpi0 sio0: type 16550A
> sio0: [FILTER]
> sio1: configured irq 3 not in bitmap of probed irqs 0
> sio1: port may not be enabled
> sio1: configured irq 3 not in bitmap of probed irqs 0
> sio1: port may not be enabled
> sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
> sio1: type 16550A
> sio1: [FILTER]
> fdc0: <floppy drive controller (FDE)> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on
> acpi0
> fdc0: [FILTER]
> orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xc9fff on isa0
> atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
> atkbd0: <AT Keyboard> irq 1 on atkbdc0
> kbd0 at atkbd0
> atkbd0: [GIANT-LOCKED]
> atkbd0: [ITHREAD]
> ppc0: cannot reserve I/O port range
> sc0: <System console> at flags 0x100 on isa0
> sc0: VGA <16 virtual consoles, flags=0x300>
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> uhub3: <vendor 0x0557 product 0x7000, class 9/0, rev 1.10/1.00, addr 2> on
> uhub0
> uhub3: 4 ports with 4 removable, self powered
> ukbd0: <ATEN CS-1734A V3.4.331, class 0/0, rev 1.10/1.00, addr 3> on uhub3
> kbd2 at ukbd0
> ums0: <ATEN CS-1734A V3.4.331, class 0/0, rev 1.10/1.00, addr 3> on uhub3
> ums0: 5 buttons and Z dir.
> Timecounters tick every 1.000 msec
> acd0: CDROM <CD-224E-N/1.AA> at ata0-slave UDMA33
> SMP: AP CPU #1 Launched!
> da0 at twa0 bus 0 target 0 lun 0
> da0: <AMCC 9550SX-4LP DISK 3.08> Fixed Direct Access SCSI-5 device
> da0: 100.000MB/s transfers
> da0: 572184MB (1171832832 512 byte sectors: 255H 63S/T 72943C)
> Trying to mount root from ufs:/dev/da0s1a
> ---------------------------------------------------------------------------

OK, I managed to fix this issue by commenting out OHCI from kernel.

#device         ohci            # OHCI PCI->USB interface

"systat -vm" shows now "31 ehci0 10" instead of "96514 ohci0 ohci".

Affected systems are: Tyan S3870 and B3870 motherboards.