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Date:      Sun,  3 Dec 2000 11:27:00 -0500
From:      Barry Lustig <barry@lustig.com>
To:        gerti-freebsds@BITart.com
Cc:        stable@freebsd.org, mobile@freebsd.org
Subject:   Re: Boot problem with 4.2-STABLE on VAIO z505-LE
Message-ID:  <20001203162701.10239.qmail@devious.lustig.com>
In-Reply-To: <20001202154922.8753.qmail@camelot.bitart.com>
References:  <20001201211336.8019.qmail@devious.lustig.com> <20001202154922.8753.qmail@camelot.bitart.com>

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On Sat,  2 Dec 2000, Gerd Knops wrote:
>  Looks like the Sony USB Memory Stick Slot is causing trouble. I have an
>  external USB Memory Stick Adapter working just fine, no idea why the
>  internal one is failing. Do you happen to have a memory stick in there?
>

  I've done a bit more research on this.  The problem is with the USB floppy  
drive.  The 4.2-RELEASE generic kernel has no problems probing for it (it  
works with the floppy attached or unattached at boot).  I tried removing  
"device umass" from the kernel config file and loading umass via kldload.   
That works.  I then tried adding a umass_load="YES" to /boot/loader.conf,  
that also works.  It won't work though, when I compile it into the kernel.

barry



>  ok boot -v
>  SMAP type=01 base=00000000 00000000 len=00000000 0009f800
>  SMAP type=02 base=00000000 0009f800 len=00000000 00000800
>  SMAP type=02 base=00000000 000e8400 len=00000000 00017c00
>  SMAP type=01 base=00000000 00100000 len=00000000 0bef0000
>  SMAP type=03 base=00000000 0bff0000 len=00000000 0000f800
>  SMAP type=04 base=00000000 0bfff800 len=00000000 00000800
>  SMAP type=02 base=00000000 fff80000 len=00000000 00080000
>  Copyright (c) 1992-2000 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 4.2-STABLE #7: Fri Dec  1 14:08:28 EST 2000
>  barry@vaio.lustig.com:/usr/src/sys/compile/VAIO
>  Calibrating clock(s) ... TSC clock: 645193534 Hz, i8254 clock:
>  1193167 Hz CLK_USE_I8254_CALIBRATION not specified - using default
>  frequency Timecounter "i8254"  frequency 1193182 Hz
>  CLK_USE_TSC_CALIBRATION not specified - using old calibration method
>  CPU: Pentium III/Pentium III Xeon/Celeron (645.21-MHz 686-class CPU)
>  Origin = "GenuineIntel"  Id = 0x683  Stepping = 3
>

>   
Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
>  real memory = 201261056 (196544K bytes) Physical memory chunk(s):
>  0x00001000 - 0x0009efff, 647168 bytes (158 pages) 0x00408000 - 0x0bfe7fff,
>  197001216 bytes (48096 pages) avail memory = 191856640 (187360K bytes)
>  bios32: Found BIOS32 Service Directory header at 0xc00f6c10
>  bios32: Entry = 0xfd890 (c00fd890)  Rev = 0  Len = 1
>  pcibios: PCI BIOS entry at 0x11e
>  pnpbios: Found PnP BIOS data at 0xc00f6c40
>  pnpbios: Entry = f0000:b431  Rev = 1.0
>  pnpbios: Event flag at 400
>  Other BIOS signatures found:
>  ACPI: 000f6bb0
>  Preloaded elf kernel "kernel" at 0xc03e2000.
>  Pentium Pro MTRR support enabled
>  md0: Malloc disk
>  Creating DISK md0
>  Math emulator present
>  pci_open(1):    mode 1 addr port (0x0cf8) is 0x80003904
>  pci_open(1a):   mode1res=0x80000000 (0x80000000)
>  pci_cfgcheck: device 0 [class=060000] [hdr=00] is there (id=71908086)
>  apm0: <APM BIOS> on motherboard apm: found APM BIOS v1.2, connected
>  at v1.2 npx0: <math processor> on motherboard
>  npx0: INT 16 interface
>  pci_open(1):    mode 1 addr port (0x0cf8) is 0x00000000
>  pci_open(1a):   mode1res=0x80000000 (0x80000000)
>  pci_cfgcheck: device 0 [class=060000] [hdr=00] is there (id=71908086)
>  pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
>  found-> vendor=0x8086, dev=0x7190, revid=0x03 class=06-00-00,
>  hdrtype=0x00, mfdev=0 subordinatebus=0        secondarybus=0
>  map[10]: type 1, range 32, base 40000000, size 24
>  found-> vendor=0x8086, dev=0x7191, revid=0x03
>  class=06-04-00, hdrtype=0x01, mfdev=0
>  subordinatebus=1        secondarybus=1
>  found-> vendor=0x8086, dev=0x7110, revid=0x02
>  class=06-01-00, hdrtype=0x00, mfdev=1
>  subordinatebus=0        secondarybus=0
>  found-> vendor=0x8086, dev=0x7111, revid=0x01
>  class=01-01-80, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  map[20]: type 1, range 32, base 0000fc90, size  4
>  found-> vendor=0x8086, dev=0x7112, revid=0x01
>  class=0c-03-00, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=d, irq=9
>  map[20]: type 1, range 32, base 0000fca0, size  5
>  found-> vendor=0x8086, dev=0x7113, revid=0x03
>  class=06-80-00, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  map[90]: type 1, range 32, base 00001040, size  4
>  found-> vendor=0x104d, dev=0x8039, revid=0x02
>  class=0c-00-10, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=a, irq=9
>  map[10]: type 1, range 32, base fedf7000, size 11
>  map[14]: type 1, range 32, base fedf7c00, size  9
>  found-> vendor=0x1073, dev=0x0010, revid=0x02
>  class=04-01-00, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=a, irq=9
>  map[10]: type 1, range 32, base fedf8000, size 15
>  map[14]: type 1, range 32, base 0000fcc0, size  6
>  map[18]: type 3, range 32, base 0000fc8c, size  2
>  found-> vendor=0x14f1, dev=0x2443, revid=0x01
>  class=07-80-00, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=a, irq=9
>  map[10]: type 1, range 32, base fede0000, size 16
>  map[14]: type 3, range 32, base 0000fc38, size  3
>  found-> vendor=0x8086, dev=0x1229, revid=0x08
>  class=02-00-00, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=a, irq=9
>  map[10]: type 1, range 32, base fedf6000, size 12
>  map[14]: type 1, range 32, base 0000fc40, size  6
>  map[18]: type 1, range 32, base fec00000, size 20
>  found-> vendor=0x1180, dev=0x0475, revid=0x80
>  class=06-07-00, hdrtype=0x02, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=a, irq=255
>  pci0: <PCI bus> on pcib0
>  pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device 1.0 on
>  pci0 found-> vendor=0x1002, dev=0x4c4d, revid=0x64
>  class=03-00-00, hdrtype=0x00, mfdev=0
>  subordinatebus=0        secondarybus=0
>  intpin=a, irq=9
>  map[10]: type 1, range 32, base fd000000, size 24
>  map[14]: type 1, range 32, base 0000e800, size  8
>  map[18]: type 1, range 32, base febff000, size 12
>  pci1: <PCI bus> on pcib1
>  pci1: <ATI Mobility-1 graphics accelerator> (vendor=0x1002,
>  dev=0x4c4d) at 0.0 irq 9 isab0: <Intel 82371AB PCI to ISA bridge> at
>  device 7.0 on pci0 isa0: <ISA bus> on isab0
>  atapci0: <Intel PIIX4 ATA33 controller> port 0xfc90-0xfc9f at device
>  7.1 on pci0 ata0: iobase=0x01f0 altiobase=0x03f6 bmaddr=0xfc90
>  ata0: mask=03 status0=50 status1=00
>  ata0: mask=03 ostat0=50 ostat2=00
>  ata0-master: ATAPI probe a=00 b=00
>  ata0-slave: ATAPI probe a=00 b=00
>  ata0: mask=03 status0=50 status1=00
>  ata0-master: ATA probe a=01 b=a5
>  ata0: devices=01
>  ata0: at 0x1f0 irq 14 on atapci0
>  ata1: iobase=0x0170 altiobase=0x0376 bmaddr=0xfc98
>  ata1: mask=03 status0=00 status1=00
>  ata1: mask=03 ostat0=00 ostat2=00
>  ata1-master: ATAPI probe a=00 b=00
>  ata1-slave: ATAPI probe a=00 b=00
>  ata1: mask=03 status0=00 status1=00
>  ata1: devices=00
>  ata1: at 0x170 irq 15 on atapci0
>  uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xfca0-0xfcbf
>  irq 9 at device 7.2 on pci0 usb0: <Intel 82371AB/EB (PIIX4) USB
>  controller> on uhci0 usb0: USB revision 1.0
>  uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
>  uhub0: 2 ports with 2 removable, self powered
>  uhub1: Philips Semiconductors product 0x1122, class 9/0, rev
>  1.10/1.10, addr 2 uhub1: 3 ports with 3 removable, self powered
>  umass0: Sony USB Memory Stick Slot, rev 1.10/1.31, addr 3
>  umass0:0:0:-1: Attached to scbus0 as device 0
>  intpm0: <Intel 82371AB Power management controller> port
>  0x1040-0x104f irq 9 at device 7.3 on pci0 intpm0: I/O mapped 1040
>  intpm0: intr IRQ 9 enabled revision 0
>  using shared irq9.
>  smbus0: <System Management Bus> on intsmb0
>  smb0: <SMBus general purpose I/O> on smbus0
>  intpm0: PM I/O mapped 8000
>  chip1: <Sony CXD3222 FireWire Host Controller> mem
>  0xfedf7c00-0xfedf7dff,0xfedf7000-0xfedf77ff irq 9 at device 8.0 on
>  pci0 pcm0: <Yamaha DS-1E (YMF744)> port 0xfc8c-0xfc8f,0xfcc0-0xfcff
>  mem 0xfedf8000-0xfedfffff irq 9 at device 9.0 on pci0 ds1: setmap
>  (1000, 3de4), nseg=1, error=0 pcm0: ac97 codec id 0x414b4d02
>  pcm0: ac97 codec features headphone, 18 bit DAC, 18 bit ADC, 5 bit
>  master volume, AKM 3D Audio pcm0: ac97 primary codec extended
>  features AMAP pcm: setmap 11000, 1000; 0xc9dbe000 -> 11000
>  pcm: setmap 21000, 1000; 0xc9dce000 -> 21000
>  pcm: setmap 31000, 1000; 0xc9dde000 -> 31000
>  pcm: setmap 41000, 1000; 0xc9dee000 -> 41000
>  pcm: setmap 51000, 1000; 0xc9dfe000 -> 51000
>  pcm: setmap 61000, 1000; 0xc9e0e000 -> 61000
>  pci0: <unknown card> (vendor=0x14f1, dev=0x2443) at 10.0 irq 9
>  fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0xfc40-0xfc7f mem
>  0xfec00000-0xfecfffff,0xfedf6000-0xfedf6fff irq 9 at device 11.0 on
>  pci0 fxp0: Ethernet address 08:00:46:0d:8b:a9
>  bpf: fxp0 attached
>  pcic-pci0: <Ricoh RL5C475 PCI-CardBus Bridge> at device 12.0 on pci0
>  pcic-pci0: Legacy address set to 0x3e0
>  PCI Config space:
>  00:  04751180 02100007 06070080 00020000
>  10:  00000000 020000dc 00000000 00000000
>  20:  00000000 00000000 00000000 00000000
>  30:  00000000 00000000 00000000 078001ff
>  40:  8082104d 000003e1 00000000 00000000
>  50:  00000000 00000000 00000000 00000000
>  60:  00000000 00000000 00000000 00000000
>  70:  00000000 00000000 00000000 00000000
>  80:  00020001 00000000 04630463 30000000
>  90:  00000000 00000000 00000000 00000000
>  Cardbus Socket registers:
>  00:  f000ff53: f000ff53: f000e2c3: f000ff53:
>  10:  f000ff53: f000ff54: f000a1af: f000ff53:
>  ExCa registers:
>  00: eb 88 d5 43 30 d2 66 f7 f3 88 d7 5a 66 3d ff 03
>  10: 00 00 fb 77 44 86 c4 c0 c8 02 08 e8 40 91 88 fe
>  20: 28 e0 8a 66 02 38 e0 72 02 88 e0 bf 05 00 c4 5e
>  30: 04 50 b4 02 cd 13 5b 73 0a 4f 74 1c 30 e4 cd 13
>  Trying Read_Port at 203
>  Trying Read_Port at 243
>  Trying Read_Port at 283
>  Trying Read_Port at 2c3
>  Trying Read_Port at 303
>  Trying Read_Port at 343
>  Trying Read_Port at 383
>  Trying Read_Port at 3c3
>  isa_probe_children: disabling PnP devices
>  isa_probe_children: probing non-PnP devices
>  fdc0: direction bit not set
>  fdc0: cmd 3 failed at out byte 1 of 3
>  fdc0 failed to probe at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
>  atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
>  atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
>  atkbd: the current kbd controller command byte 0047
>  atkbd: keyboard ID 0x41ab (2)
>  kbdc: RESET_KBD return code:00fa
>  kbdc: RESET_KBD status:00aa
>  kbd0 at atkbd0
>  kbd0: atkbd0, AT 101/102 (2), config:0x1, flags:0x1d0000
>  psm0: current command byte:0047
>  kbdc: TEST_AUX_PORT status:0000
>  kbdc: RESET_AUX return code:00fa
>  kbdc: RESET_AUX status:00aa
>  kbdc: RESET_AUX ID:0000
>  psm: status 00 02 64
>  psm: status 00 00 64
>  psm: status 00 03 64
>  psm: status 00 03 64
>  psm: data 08 00 00
>  psm: status 73 02 0a
>  psm: data 08 00 00
>  psm: status 00 02 64
>  psm0: <PS/2 Mouse> irq 12 on atkbdc0
>  psm0: model GlidePoint, device ID 0-00, 2 buttons
>  psm0: config:00000000, flags:00000000, packet size:3
>  psm0: syncmask:c0, syncbits:00
>  vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
>  isa0 fb0: vga0, vga, type:VGA (5), flags:0x7007f
>  fb0: port:0x3c0-0x3df, crtc:0x3d4, mem:0xa0000 0x20000
>  fb0: init mode:24, bios mode:3, current mode:24
>  fb0: window:0xc00b8000 size:32k gran:32k, buf:0 size:32k
>  vga0: vga: WARNING: video mode switching is not fully supported on
>  this adapter VGA parameters upon power-up
>  50 18 10 00 00 00 03 00 02 e7 73 4f 4f 97 52 83
>  b4 1f 00 4f 0d 0e 00 00 01 e0 91 87 8f 28 1f 8f
>  b5 a3 ff 00 01 02 03 04 05 14 07 38 39 3a 3b 3c
>  3d 3e 3f 0c 00 0f 08 00 00 00 00 00 10 0e 00 ff
>  VGA parameters in BIOS for mode 24
>  50 18 10 00 10 00 03 00 02 67 5f 4f 50 82 55 81
>  bf 1f 00 4f 0d 0e 00 00 00 00 9c 8e 8f 28 1f 96
>  b9 a3 ff 00 01 02 03 04 05 14 07 38 39 3a 3b 3c
>  3d 3e 3f 0c 00 0f 08 00 00 00 00 00 10 0e 00 ff
>  EGA/VGA parameters to be used for mode 24
>  50 18 10 00 00 00 03 00 02 e7 73 4f 4f 97 52 83
>  b4 1f 00 4f 0d 0e 00 00 01 e0 91 87 8f 28 1f 8f
>  b5 a3 ff 00 01 02 03 04 05 14 07 38 39 3a 3b 3c
>  3d 3e 3f 0c 00 0f 08 00 00 00 00 00 10 0e 00 ff
>  sc0: <System console> at flags 0x100 on isa0
>  sc0: VGA <16 virtual consoles, flags=0x100>
>  sc0: fb0, kbd0, terminal emulator: sc (syscons terminal)
>  pcic0: <Intel i82365> at port 0x3e0 iomem 0xd4000 irq 10 on isa0
>  pcic0: management irq 10
>  stat is 33
>  pccard0: <PC Card bus -- kludge version> on pcic0
>  pcic1: not probed (disabled)
>  sio0: irq maps: 0x1 0x11 0x1 0x1
>  sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
>  sio0: type 16550A, console
>  isa_probe_children: probing PnP devices
>  BIOS Geometries:
>  0:03fefe3f 0..1022=1023 cylinders, 0..254=255 heads, 1..63=63 sectors
>  0 accounted for
>  Device configuration finished.
>  bpf: lo0 attached
>  bpf: ppp0 attached
>  new masks: bio 68c200, tty 631212, net 671212
>  bpf: sl0 attached
>  bpf: faith0 attached
>  bpf: gif0 attached
>  bpf: gif1 attached
>  bpf: gif2 attached
>  bpf: gif3 attached
>  BRIDGE 990810, have 9 interfaces
>  -- index 1  type 6 phy 0 addrl 6 addr 08.00.46.0d.8b.a9
>  IPsec: Initialized Security Association Processing.
>  ata0-master: success setting UDMA2 on PIIX4 chip
>  Creating DISK ad0
>  Creating DISK wd0
>  ad0: <FUJITSU MHK2120AT/D834> ATA-5 disk at ata0-master
>  ad0: 11513MB (23579136 sectors), 23392 cyls, 16 heads, 63 S/T, 512
>  B/S ad0: 16 secs/int, 1 depth queue, UDMA33
>  ad0: piomode=4 dmamode=2 udmamode=4 cblid=1
>  ad0: 11513MB <FUJITSU MHK2120AT> [23392/16/63] at ata0-master UDMA33
>  panic: rcmdlen = -1070593560 < 12, buffer too small
>
>  syncing disks...
>
>
>
>  CONFIGURATION FILE:
>
>  barry@gate$ cat VAIO
>
>  $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.20 2000/10/31
>  23:16:07 n_hibma Exp $
>
>  machine         i386
>  cpu             I586_CPU
>  cpu             I686_CPU
>  ident           VAIO
>  maxusers        64
>
>  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
>  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
>  options IPSEC #IP security options IPSEC_ESP #IP security (crypto;
>  define w/ IPSEC) options         INVARIANT_SUPPORT
>  options         INVARIANTS
>  options         DDB
>  options         DDB_UNATTENDED
>  options         BREAK_TO_DEBUGGER
>  options         BRIDGE                  #For vmware
>
>  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
>
>  ATA and ATAPI devices
>  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
>  options         ATA_ENABLE_ATAPI_DMA    #Enable DMA on ATAPI devices
>
>  SCSI peripherals (needed for USB umass driver)
>  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)
>
>  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
>  options         SC_PIXEL_MODE
>  options         SC_NORM_ATTR="(FG_LIGHTGREY|BG_BLACK)"
>  options         SC_NORM_REV_ATTR="(FG_BLACK|BG_LIGHTGREY)"
>  options         SC_KERNEL_CONS_ATTR="(FG_WHITE|BG_RED)"
>  options         SC_KERNEL_CONS_REV_ATTR="(FG_RED|BG_BLACK)"
>
>  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? flags 0x20 # Advanced Power Management
>
>  PCCARD (PCMCIA) support
>  device          card
>  device          pcic0   at isa? irq 10 port 0x3e0 iomem 0xd4000
>  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 fxp # Intel EtherExpress PRO/100B (82557, 82558) device wi
>  device an
>
>  Pseudo devices - the number indicates how many units to allocated.
>  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     4       # 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
>
>
>  SMB bus
>
>  System Management Bus support provided by the 'smbus' device.
>
>  Supported devices:
>  smb   standard io
>
>  Supported interfaces:
>  iicsmb I2C to SMB bridge with any iicbus interface
>  bktr  brooktree848 I2C hardware interface
>  intpm Intel PIIX4 Power Management Unit
>  alpm  Acer Aladdin-IV/V/Pro2 Power Management Unit
>
>  device smbus # Bus support, required for smb below. device intpm
>  device alpm
>
>  device          smb
>
>  device iicbus #Bus support, required for ic/iic/iicsmb below. device
>  iicbb device          ic
>  device          iic
>  device          iicsmb          # smb over i2c bridge
>
>  pcm: Luigi's sound driver
>  device          pcm
>
>
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>



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