SMBus hardware note recognized

leafy_at_chihiro:~$ dmesg |grep driver
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
leafy_at_chihiro:~$ sudo pciconf -lv
hostb0_at_pci0:0:0:        class=0x060000 card=0x00000000 chip=0x25608086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82845G/GL/GV/GE/PE DRAM Controller / Host-Hub I/F Bridge'
    class    = bridge
    subclass = HOST-PCI
agp0_at_pci0:2:0:  class=0x030000 card=0x25628086 chip=0x25628086 rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82845G/GL/GV/GE/PE Integrated Graphics Device'
    class    = display
    subclass = VGA
uhci0_at_pci0:29:0:        class=0x0c0300 card=0x24c08086 chip=0x24c28086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1'
    class    = serial bus
    subclass = USB
uhci1_at_pci0:29:1:        class=0x0c0300 card=0x24c08086 chip=0x24c48086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2'
    class    = serial bus
    subclass = USB
uhci2_at_pci0:29:2:        class=0x0c0300 card=0x24c08086 chip=0x24c78086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3'
    class    = serial bus
    subclass = USB
ehci0_at_pci0:29:7:        class=0x0c0320 card=0x24c08086 chip=0x24cd8086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB 2.0 EHCI Controller'
    class    = serial bus
    subclass = USB
pcib1_at_pci0:30:0:        class=0x060400 card=0x00000000 chip=0x244e8086
rev=0x81 hdr=0x01
    vendor   = 'Intel Corporation'
    device   = '82801BA/CA/DB/DBL/EB/ER/FB (ICH2/3/4/4/5/5/6), 6300ESB
Hub Interface to PCI Bridge'
    class    = bridge
    subclass = PCI-PCI
isab0_at_pci0:31:0:        class=0x060100 card=0x00000000 chip=0x24c08086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge'
    class    = bridge
    subclass = PCI-ISA
atapci0_at_pci0:31:1:      class=0x01018a card=0x24c08086 chip=0x24cb8086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL (ICH4/ICH4-L) UltraATA/100 EIDE Controller'
    class    = mass storage
    subclass = ATA
none0_at_pci0:31:3:        class=0x0c0500 card=0x24c08086 chip=0x24c38086
rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller'
    class    = serial bus
    subclass = SMBus
pcm0_at_pci0:31:5: class=0x040100 card=0x58001462 chip=0x24c58086 rev=0x01 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller'
    class    = multimedia
    subclass = audio
fwohci0_at_pci3:1:0:       class=0x0c0010 card=0x00000000 chip=0x8020104c
rev=0x00 hdr=0x00
    vendor   = 'Texas Instruments (TI)'
    device   = 'TSB12LV26 OHCI-Lynx PCI IEEE 1394 Host Controller'
    class    = serial bus
    subclass = FireWire
ahc0_at_pci3:2:0:  class=0x010000 card=0xa1009005 chip=0x00109005 rev=0x00 hdr=0x00
    vendor   = 'Adaptec Inc'
    device   = 'AHA-2940U2W/U2B AHA-2950U2W Ultra2 SCSI Controller'
    class    = mass storage
    subclass = SCSI
fxp0_at_pci3:4:0:  class=0x020000 card=0x00098086 chip=0x12298086 rev=0x05 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82550/1/7/8/9 EtherExpress PRO/100(B) Ethernet Adapter'
    class    = network
    subclass = ethernet
fxp1_at_pci3:8:0:  class=0x020000 card=0x10398086 chip=0x103a8086 rev=0x81 hdr=0x00
    vendor   = 'Intel Corporation'
    device   = '82801DB/DBL (ICH4/ICH4-L) PRO/100 VE Network Connection'
    class    = network
    subclass = ethernet

kldloading smb/smbus or compiling them in the kernel does not help in
recognizing the hardware. Maybe the PCI-ID is incorrect or something?

Jiawei
-- 
"Without the userland, the kernel is useless."
               --inspired by The Tao of Programming