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From: igor_dorovskoy@agilent.com
To: vel@bugz.infotecs.ru, freebsd-hackers@freebsd.org
Subject: RE: SMP problem on E7500 chipset
Date: Wed, 31 Jul 2002 07:53:49 -0600
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Looks like you do have hyper threading support on in your BIOS.
Turn it off to disable virtual CPU's in your Xeons

Igor.

-----Original Message-----
From: Eugene L. Vorokov [mailto:vel@bugz.infotecs.ru]
Sent: Wednesday, July 31, 2002 7:31 AM
To: freebsd-hackers@freebsd.org
Subject: SMP problem on E7500 chipset


Hi,

I have some strange problem with FreeBSD 4.6 and SMP kernel on a dual CPU
machine. The hardware is:

Motherboard SUPER P4DP6, chipset Intel E7500
2 CPUs: Intel Xeon 2.2Ghz
Adaptec AIC-7899W SCSI controller
2 Intel-82550 Ethernet controllers

When I try to boot an SMP kernel, it tells me that 4 CPUs are found.
Network operation slows down to hell, syslog is full of

Jul 31 14:44:54 superjob /kernel: fxp0: device timeout

Without SMP, everything runs fine.

Syslog output regarding dmesg and kernel config are below.

Regards,
Eugene L. Vorokov

----
Jul 31 14:40:12 superjob /kernel: FreeBSD 4.6-RELEASE #0: Wed Jul 31 14:35:07 MS
D 2002
Jul 31 14:40:12 superjob /kernel: maxik@superjob.ru:/usr/src/sys/compile/maxik
Jul 31 14:40:12 superjob /kernel: Timecounter "i8254"  frequency 1193182 Hz
Jul 31 14:40:12 superjob /kernel: CPU: Pentium 4 (2196.27-MHz 686-class CPU)
Jul 31 14:40:12 superjob /kernel: Origin = "GenuineIntel"  Id = 0xf24  Stepping   
= 4
Jul 31 14:40:12 superjob /kernel: Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE
,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2
,SS,<b28>,ACC>
Jul 31 14:40:12 superjob /kernel: real memory  = 2146959360 (2096640K bytes)
Jul 31 14:40:12 superjob /kernel: avail memory = 2088005632 (2039068K bytes)
Jul 31 14:40:12 superjob /kernel: Programming 24 pins in IOAPIC #0
Jul 31 14:40:12 superjob /kernel: IOAPIC #0 intpin 2 -> irq 0
Jul 31 14:40:12 superjob /kernel: Programming 24 pins in IOAPIC #1
Jul 31 14:40:12 superjob /kernel: Programming 24 pins in IOAPIC #2
Jul 31 14:40:12 superjob /kernel: Programming 24 pins in IOAPIC #3
Jul 31 14:40:12 superjob /kernel: Programming 24 pins in IOAPIC #4
Jul 31 14:40:12 superjob /kernel: FreeBSD/SMP: Multiprocessor motherboard
Jul 31 14:40:12 superjob /kernel: cpu0 (BSP): apic id:  0, version: 0x00050014,
at 0xfee00000
Jul 31 14:40:12 superjob /kernel: cpu1 (AP):  apic id:  6, version: 0x00050014,
at 0xfee00000
Jul 31 14:40:12 superjob /kernel: cpu2 (AP):  apic id:  1, version: 0x00050014,
at 0xfee00000
Jul 31 14:40:12 superjob /kernel: cpu3 (AP):  apic id:  7, version: 0x00050014,
at 0xfee00000
Jul 31 14:40:12 superjob /kernel: io0 (APIC): apic id:  2, version: 0x00178020,
at 0xfec00000
Jul 31 14:40:12 superjob /kernel: io1 (APIC): apic id:  3, version: 0x00178020,
at 0xfec80000
Jul 31 14:40:12 superjob /kernel: io2 (APIC): apic id:  4, version: 0x00178020,
at 0xfec80400
Jul 31 14:40:12 superjob /kernel: io3 (APIC): apic id:  5, version: 0x00178020,
at 0xfec81000
Jul 31 14:40:12 superjob /kernel: io4 (APIC): apic id:  8, version: 0x00178020,
at 0xfec81400
Jul 31 14:40:12 superjob /kernel: Preloaded elf kernel "kernel" at 0xc02f0000.
ul 31 14:40:12 superjob /kernel: md0: Malloc disk
Jul 31 14:40:12 superjob /kernel: Using $PIR table, 28 entries at 0xc00fde00
Jul 31 14:40:12 superjob /kernel: npx0: <math processor> on motherboard
Jul 31 14:40:12 superjob /kernel: npx0: INT 16 interface
Jul 31 14:40:12 superjob /kernel: pcib0: <Host to PCI bridge> on motherboard
Jul 31 14:40:12 superjob /kernel: IOAPIC #0 intpin 16 -> irq 2
Jul 31 14:40:12 superjob /kernel: IOAPIC #0 intpin 19 -> irq 5
Jul 31 14:40:12 superjob /kernel: IOAPIC #0 intpin 18 -> irq 10
Jul 31 14:40:12 superjob /kernel: pci0: <PCI bus> on pcib0
Jul 31 14:40:12 superjob /kernel: pci0: <unknown card> (vendor=0x8086, dev=0x254
1) at 0.1
Jul 31 14:40:12 superjob /kernel: pcib1: <PCI to PCI bridge (vendor=8086 device=
2543)> at device 2.0 on pci0
Jul 31 14:40:12 superjob /kernel: pci1: <PCI bus> on pcib1
Jul 31 14:40:12 superjob /kernel: pci1: <unknown card> (vendor=0x8086, dev=0x146
1) at 28.0
Jul 31 14:40:12 superjob /kernel: pcib2: <PCI to PCI bridge (vendor=8086 device=
1460)> at device 29.0 on pci1
Jul 31 14:40:12 superjob /kernel: IOAPIC #2 intpin 4 -> irq 11
Jul 31 14:40:12 superjob /kernel: pci2: <PCI bus> on pcib2
Jul 31 14:40:12 superjob /kernel: pcib3: <PCI to PCI bridge (vendor=8086 device=
0962)> at device 2.0 on pci2
Jul 31 14:40:12 superjob /kernel: pci3: <PCI bus> on pcib3
ul 31 14:40:12 superjob /kernel: mly0: <Mylex AcceleRAID 170> mem 0xfe200000-0x
fe201fff irq 11 at device 2.1 on pci2
Jul 31 14:40:12 superjob /kernel: mly0: AcceleRAID 170  , 1 channel, firmware 6.
00-7-00 (20001214), 128MB RAM
Jul 31 14:40:12 superjob /kernel: pci1: <unknown card> (vendor=0x8086, dev=0x146
1) at 30.0   
Jul 31 14:40:12 superjob /kernel: pcib4: <PCI to PCI bridge (vendor=8086 device=
1460)> at device 31.0 on pci1
Jul 31 14:40:12 superjob /kernel: pci4: <PCI bus> on pcib4
Jul 31 14:40:12 superjob /kernel: pcib5: <PCI to PCI bridge (vendor=8086 device=
2545)> at device 3.0 on pci0
Jul 31 14:40:12 superjob /kernel: pci5: <PCI bus> on pcib5
Jul 31 14:40:12 superjob /kernel: pci5: <unknown card> (vendor=0x8086, dev=0x146
1) at 28.0   
Jul 31 14:40:12 superjob /kernel: pcib6: <PCI to PCI bridge (vendor=8086 device=
1460)> at device 29.0 on pci5
Jul 31 14:40:12 superjob /kernel: pci6: <PCI bus> on pcib6
Jul 31 14:40:12 superjob /kernel: pci5: <unknown card> (vendor=0x8086, dev=0x146
1) at 30.0
Jul 31 14:40:12 superjob /kernel: pcib7: <PCI to PCI bridge (vendor=8086 device=
1460)> at device 31.0 on pci5
Jul 31 14:40:12 superjob /kernel: pci7: <PCI bus> on pcib7
Jul 31 14:40:12 superjob /kernel: uhci0: <Intel 82801CA/CAM (ICH3) USB controlle
r USB-A> port 0x1400-0x141f irq 2 at device 29.0 on pci0
Jul 31 14:40:12 superjob /kernel: usb0: <Intel 82801CA/CAM (ICH3) USB controller
 USB-A> on uhci0
Jul 31 14:40:12 superjob /kernel: usb0: USB revision 1.0
Jul 31 14:40:12 superjob /kernel: uhub0: Intel UHCI root hub, class 9/0, rev 1.0
0/1.00, addr 1
Jul 31 14:40:12 superjob /kernel: uhub0: 2 ports with 2 removable, self powered
Jul 31 14:40:12 superjob /kernel: uhci1: <Intel 82801CA/CAM (ICH3) USB controlle
r USB-B> port 0x1420-0x143f irq 5 at device 29.1 on pci0  
Jul 31 14:40:12 superjob /kernel: usb1: <Intel 82801CA/CAM (ICH3) USB controller
 USB-B> on uhci1
Jul 31 14:40:12 superjob /kernel: usb1: USB revision 1.0
Jul 31 14:40:12 superjob /kernel: uhub1: Intel UHCI root hub, class 9/0, rev 1.0
0/1.00, addr 1
Jul 31 14:40:12 superjob /kernel: uhub1: 2 ports with 2 removable, self powered 
Jul 31 14:40:12 superjob /kernel: uhci2: <UHCI (generic) USB controller> port 0x
1440-0x145f irq 10 at device 29.2 on pci0
Jul 31 14:40:12 superjob /kernel: uhci2: (New UHCI DeviceId=0x24878086)
Jul 31 14:40:12 superjob /kernel: usb2: <UHCI (generic) USB controller> on uhci2
Jul 31 14:40:12 superjob /kernel: usb2: USB revision 1.0  
Jul 31 14:40:12 superjob /kernel: uhub2: (0x24878086) UHCI root hub, class 9/0, 
rev 1.00/1.00, addr 1       
Jul 31 14:40:12 superjob /kernel: uhub2: 2 ports with 2 removable, self powered
idge> at device 30.0 on pci0
Jul 31 14:40:12 superjob /kernel: pci8: <PCI bus> on pcib8
Jul 31 14:40:12 superjob /kernel: pci8: <ATI Mach64-GR graphics accelerator> at 
1.0 irq 16
Jul 31 14:40:12 superjob /kernel: fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0
x2400-0x243f mem 0xfc300000-0xfc31ffff,0xfc341000-0xfc341fff irq 11 at device 2.
0 on pci8
Jul 31 14:40:12 superjob /kernel: fxp0: Ethernet address 00:30:48:12:21:31
Jul 31 14:40:12 superjob /kernel: inphy0: <i82555 10/100 media interface> on mii
bus0
Jul 31 14:40:12 superjob /kernel: inphy0:  10baseT, 10baseT-FDX, 100baseTX, 100b
aseTX-FDX, auto
Jul 31 14:40:12 superjob /kernel: fxp1: <Intel Pro 10/100B/100+ Ethernet> port 0
x2440-0x247f mem 0xfc320000-0xfc33ffff,0xfc342000-0xfc342fff irq 5 at device 3.0
 on pci8
Jul 31 14:40:12 superjob /kernel: fxp1: Ethernet address 00:30:48:12:26:15
Jul 31 14:40:12 superjob /kernel: inphy1: <i82555 10/100 media interface> on mii
bus1
Jul 31 14:40:12 superjob /kernel: inphy1:  10baseT, 10baseT-FDX, 100baseTX, 100b
aseTX-FDX, auto
Jul 31 14:40:12 superjob /kernel: isab0: <PCI to ISA bridge (vendor=8086 device=
2480)> at device 31.0 on pci0
Jul 31 14:40:12 superjob /kernel: isa0: <ISA bus> on isab0
Jul 31 14:40:12 superjob /kernel: atapci0: <Intel ICH3 ATA100 controller> port 0
x1460-0x146f,0-0x3,0-0x7,0-0x3,0-0x7 irq 0 at device 31.1 on pci0
Jul 31 14:40:12 superjob /kernel: ata0: at 0x1f0 irq 14 on atapci0
Jul 31 14:40:12 superjob /kernel: ata1: at 0x170 irq 15 on atapci0
Jul 31 14:40:12 superjob /kernel: pci0: <unknown card> (vendor=0x8086, dev=0x248
3) at 31.3 irq 0
Jul 31 14:40:12 superjob /kernel: orm0: <Option ROMs> at iomem 0xc0000-0xc7fff,0
xc8000-0xc8fff,0xc9000-0xcc7ff,0xd8000-0xdbfff,0xdc000-0xdffff on isa0
Jul 31 14:40:12 superjob /kernel: fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f
5,0x3f7 irq 6 drq 2 on isa0
Jul 31 14:40:12 superjob /kernel: fdc0: FIFO enabled, 8 bytes threshold
Jul 31 14:40:12 superjob /kernel: fd0: <1440-KB 3.5" drive> on fdc0 drive 0
Jul 31 14:40:12 superjob /kernel: atkbdc0: <Keyboard controller (i8042)> at port
 0x60,0x64 on isa0
Jul 31 14:40:12 superjob /kernel: vga0: <Generic ISA VGA> at port 0x3c0-0x3df io
mem 0xa0000-0xbffff on isa0
Jul 31 14:40:12 superjob /kernel: sc0: <System console> at flags 0x100 on isa0
Jul 31 14:40:12 superjob /kernel: sc0: VGA <16 virtual consoles, flags=0x300>
Jul 31 14:40:12 superjob /kernel: sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on i
sa0
Jul 31 14:40:12 superjob /kernel: sio0: type 16550A
Jul 31 14:40:12 superjob /kernel: sio1 at port 0x2f8-0x2ff irq 3 on isa0
Jul 31 14:40:12 superjob /kernel: sio1: type 16550A
Jul 31 14:40:12 superjob /kernel: sio1 at port 0x2f8-0x2ff irq 3 on isa0
Jul 31 14:40:12 superjob /kernel: sio1: type 16550A       
Jul 31 14:40:12 superjob /kernel: mly0:  enclosure 1 temperature sensor 0 failed
APIC_IO: Testing 8254 interrupt delivery
Jul 31 14:40:12 superjob /kernel: APIC_IO: routing 8254 via IOAPIC #0 intpin 2  
Jul 31 14:40:12 superjob /kernel: SMP: AP CPU #2 Launched!
Jul 31 14:40:12 superjob /kernel: SMP: AP CPU #3 Launched!
Jul 31 14:40:12 superjob /kernel: acd0: CDROM <MATSHITA CR-177> at ata1-master P
IO4
Jul 31 14:40:12 superjob /kernel: SMP: AP CPU #1 Launched!
Jul 31 14:40:12 superjob /kernel: mly0:  enclosure 1 temperature sensor 0 failed
mly0: physical device 0:6  gone
Jul 31 14:40:12 superjob /kernel: mly0:  enclosure 6 unit 0 access offlinemly0: 
physical device 0:6  gone
Jul 31 14:40:12 superjob /kernel: mly0: physical device 0:6  gone
Jul 31 14:40:12 superjob /kernel: mly0: physical device 0:6  gone
Jul 31 14:40:12 superjob /kernel: Mounting root from ufs:/dev/da0s1a
Jul 31 14:40:12 superjob /kernel: mly0: physical device 0:6  gone
Jul 31 14:40:12 superjob /kernel: da0 at mly0 bus 1 target 0 lun 0
Jul 31 14:40:12 superjob /kernel: da0: <RAID 5 online > Fixed Direct Access SCSI
-3 device
Jul 31 14:40:12 superjob /kernel: da0: 135.168MB/s transfers
Jul 31 14:40:12 superjob /kernel: da0: 34960MB (71598080 512 byte sectors: 255H
63S/T 4456C)
Jul 31 14:40:12 superjob /kernel: IP packet filtering initialized, divert disabl
ed, rule-based forwarding disabled, default to deny, logging disabled

---

machine         i386
#cpu            I386_CPU
#cpu            I486_CPU
#cpu            I586_CPU
cpu             I686_CPU
ident           maxik
maxusers        512

#makeoptions    DEBUG=-g                #Build kernel with gdb(1) debug symbols

#options        MATH_EMULATE            #Support for x87 emulation
options         INET                    #InterNETworking
#options        INET6                   #IPv6 communications protocols
options         FFS                     #Berkeley Fast Filesystem
options         FFS_ROOT                #FFS usable as root device [keep this!]
options         SOFTUPDATES             #Enable FFS soft updates support
options         UFS_DIRHASH             #Improve performance on big directories
options         MFS                     #Memory Filesystem
options         MD_ROOT                 #MD is a potential root device
#options        NFS                     #Network Filesystem
#options        NFS_ROOT                #NFS usable as root device, NFS required
#options        MSDOSFS                 #MSDOS Filesystem
options         CD9660                  #ISO 9660 Filesystem
options         CD9660_ROOT             #CD-ROM usable as root, CD9660 required
options         PROCFS                  #Process filesystem
options         COMPAT_43               #Compatible with BSD 4.3 [KEEP THIS!]
options         SCSI_DELAY=15000        #Delay (in ms) before probing SCSI
options         UCONSOLE                #Allow users to grab the console
options         USERCONFIG              #boot -c editor
options         VISUAL_USERCONFIG       #visual boot -c editor
options         KTRACE                  #ktrace(1) support
options         SYSVSHM                 #SYSV-style shared memory
options         SYSVMSG                 #SYSV-style message queues
options         SYSVSEM                 #SYSV-style semaphores
options         P1003_1B                #Posix P1003_1B real-time extensions
options         _KPOSIX_PRIORITY_SCHEDULING
#options                ICMP_BANDLIM            #Rate limit bad replies
options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev

#My options for perfomance

options         ACCEPT_FILTER_HTTP
options         MAXDSIZ="(512*1024*1024)"
options         MAXSSIZ="(256*1024*1024)"
options         DFLDSIZ="(256*1024*1024)"
options         NSFBUFS=17408

# To make an SMP kernel, the next two are needed
options         SMP                     # Symmetric MultiProcessor Kernel
options         APIC_IO                 # Symmetric (APIC) I/O

device          isa  
#device         eisa
device          pci

# Floppy drives
device          fdc0    at isa? port IO_FD1 irq 6 drq 2
device          fd0     at fdc0 drive 0
#device         fd1     at fdc0 drive 1
#
# If you have a Toshiba Libretto with its Y-E Data PCMCIA floppy,
# don't use the above line for fdc0 but the following one:
#device         fdc0

# ATA and ATAPI devices
device          ata0    at isa? port IO_WD1 irq 14
device          ata1    at isa? port IO_WD2 irq 15
device          ata
device          atadisk                 # ATA disk drives   
device          atapicd                 # ATAPI CDROM drives
device          atapifd                 # ATAPI floppy drives
device          atapist                 # ATAPI tape drives
options         ATA_STATIC_ID           #Static device numbering

# SCSI Controllers
#device         ahb             # EISA AHA1742 family
#device         ahc             # AHA2940 and onboard AIC7xxx devices
#device         amd             # AMD 53C974 (Tekram DC-390(T))  
#device         isp             # Qlogic family
#device         ncr             # NCR/Symbios Logic
#device         sym             # NCR/Symbios Logic (newer chipsets)
options         SYM_SETUP_LP_PROBE_MAP=0x40
                                # Allow ncr to attach legacy NCR devices when
                                # both sym and ncr are configured     

#device         adv0    at isa?
#device         adw
device          bt0     at isa?   
#device         aha0    at isa?
#device         aic0    at isa?

#device         ncv             # NCR 53C500
#device         nsp             # Workbit Ninja SCSI-3
#device         stg             # TMC 18C30/18C50

# SCSI peripherals
device          scbus           # SCSI bus (required)
device          da              # Direct Access (disks)
#device         sa              # Sequential Access (tape etc)
#device         cd              # CD
device          pass            # Passthrough device (direct SCSI access)

# RAID controllers interfaced to the SCSI subsystem    
#device         asr             # DPT SmartRAID V, VI and Adaptec SCSI RAID
#device         dpt             # DPT Smartcache - See LINT for options!
#device          iir             # Intel Integrated RAID
device          mly             # Mylex AcceleRAID/eXtremeRAID   
#device         ciss            # Compaq SmartRAID 5* series

# RAID controllers
#device         aac             # Adaptec FSA RAID, Dell PERC2/PERC3
#device         aacp            # SCSI passthrough for aac (requires CAM)
#device         ida             # Compaq Smart RAID
#device         amr             # AMI MegaRAID
#device         mlx             # Mylex DAC960 family       
#device         twe             # 3ware Escalade

# atkbdc0 controls both the keyboard and the PS/2 mouse    
device          atkbdc0 at isa? port IO_KBD
device          atkbd0  at atkbdc? irq 1 flags 0x1
device          psm0    at atkbdc? irq 12

device          vga0    at isa?

# splash screen/screen saver
pseudo-device   splash

# syscons is the default console driver, resembling an SCO console
device          sc0     at isa? flags 0x100
                                
# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device         vt0     at isa?
#options        XSERVER                 # support for X server on a vt console
#options        FAT_CURSOR              # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options        PCVT_SCANSET=2          # IBM keyboards are non-std

# Floating point support - do not disable.  
device          npx0    at nexus? port IO_NPX irq 13  

# Power management support (see LINT for more options)
device          apm0    at nexus? disable flags 0x20 # Advanced Power Management

# PCCARD (PCMCIA) support
device          card
device          pcic0   at isa? irq 0 port 0x3e0 iomem 0xd0000
device          pcic1   at isa? irq 0 port 0x3e2 iomem 0xd4000 disable   

# Serial (COM) ports
device          sio0    at isa? port IO_COM1 flags 0x10 irq 4
device          sio1    at isa? port IO_COM2 irq 3
device          sio2    at isa? disable port IO_COM3 irq 5
device          sio3    at isa? disable port IO_COM4 irq 9       

# Parallel port
#device         ppc0    at isa? irq 7
#device         ppbus           # Parallel port bus (required)      
#device         lpt             # Printer
#device         plip            # TCP/IP over parallel
#device         ppi             # Parallel port interface device
#device         vpo             # Requires scbus and da     


# PCI Ethernet NICs.
#device         de              # DEC/Intel DC21x4x (``Tulip'')
#device         em              # Intel PRO/1000 adapter Gigabit Ethernet Card (``Wiseman'')
#device         txp             # 3Com 3cR990 (``Typhoon'')
#device         vx              # 3Com 3c590, 3c595 (``Vortex'')

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device          miibus          # MII bus support
#device         dc              # DEC/Intel 21143 and various workalikes
device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
#device         pcn             # AMD Am79C97x PCI 10/100 NICs
#device         rl              # RealTek 8129/8139
#device         sf              # Adaptec AIC-6915 (``Starfire'')      
#device         sis             # Silicon Integrated Systems SiS 900/SiS 7016
#device         ste             # Sundance ST201 (D-Link DFE-550TX)
#device         tl              # Texas Instruments ThunderLAN   
#device         tx              # SMC EtherPower II (83c170 ``EPIC'')
#device         vr              # VIA Rhine, Rhine II
#device         wb              # Winbond W89C840F
#device         xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
#device         bge             # Broadcom BCM570x (``Tigon III'')

# ISA Ethernet NICs.
# 'device ed' requires 'device miibus'
#device         ed0     at isa? port 0x280 irq 10 iomem 0xd8000
#device         ex       
#device         ep  
#device         fe0     at isa? port 0x300
# Xircom Ethernet
#device         xe
# PRISM I IEEE 802.11b wireless NIC.
#device         awi
# WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really
# exists only as a PCMCIA device, so there is no ISA attachment needed
# and resources will always be dynamically assigned by the pccard code.
#device         wi
# Aironet 4500/4800 802.11 wireless NICs. Note: the declaration below will
# work for PCMCIA and PCI cards, as well as ISA cards set to ISA PnP
# mode (the factory default). If you set the switches on your ISA   
# card for a manually chosen I/O address and IRQ, you must specify
# those parameters here.
#device         an
# The probe order of these is presently determined by i386/isa/isa_compat.c.
#device         ie0     at isa? port 0x300 irq 10 iomem 0xd0000
#device         le0     at isa? port 0x300 irq 5 iomem 0xd0000
#device         lnc0    at isa? port 0x280 irq 10 drq 0
#device         cs0     at isa? port 0x300
#device         sn0     at isa? port 0x300 irq 10

# Pseudo devices - the number indicates how many units to allocate.
pseudo-device   loop            # Network loopback
pseudo-device   ether           # Ethernet support
#pseudo-device  sl      1       # Kernel SLIP
#pseudo-device  ppp     1       # Kernel PPP     
pseudo-device   tun             # Packet tunnel.
pseudo-device   pty             # Pseudo-ttys (telnet etc)
pseudo-device   md              # Memory "disks"
pseudo-device   gif             # IPv6 and IPv4 tunneling
pseudo-device   faith   1       # IPv6-to-IPv4 relaying (translation)  

# The `bpf' pseudo-device enables the Berkeley Packet Filter.      
# Be aware of the administrative consequences of enabling this!  
pseudo-device   bpf             #Berkeley packet filter

# USB support
device          uhci            # UHCI PCI->USB interface
#device         ohci            # OHCI PCI->USB interface
device          usb             # USB Bus (required)
#device         ugen            # Generic
#device         uhid            # "Human Interface Devices"
#device         ukbd            # Keyboard
#device         ulpt            # Printer
#device         umass           # Disks/Mass storage - Requires scbus and da
#device         ums             # Mouse   
#device         uscanner        # Scanners
#device         urio            # Diamond Rio MP3 Player
# USB Ethernet, requires mii
#device         aue             # ADMtek USB ethernet
#device         cue             # CATC USB ethernet
#device         kue             # Kawasaki LSI USB ethernet


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