As you might have noticed the revision of the EHCI controller
has changed.  I bet that's what causing the problem.  This is
a problem that should be fixed, but someone has to dig into the
Intel data sheets and figure out what changed between revisions.

	-- Lennart

Mark Davies wrote:
> We have an external USB2 disk drive that we can plug into some Dell Optiplex 
> GX260's and access quite happily:
> 
> uhci0 at pci0 dev 29 function 0: Intel 82801DB/DBM USB UHCI Controller #1 
> (rev. 0x01)
> uhci0: interrupting at irq 11
> uhci0: setup of reserve of size 262144 successful; p 017e8000 v 0xda960000
> usb0 at uhci0: USB revision 1.0
> uhub0 at usb0
> uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> uhci1 at pci0 dev 29 function 1: Intel 82801DB/DBM USB UHCI Controller #2 
> (rev. 0x01)
> uhci1: interrupting at irq 10
> uhci1: setup of reserve of size 262144 successful; p 0182e000 v 0xda9a2000
> usb1 at uhci1: USB revision 1.0
> uhub1 at usb1
> uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub1: 2 ports with 2 removable, self powered
> uhci2 at pci0 dev 29 function 2: Intel 82801DB/DBM USB UHCI Controller #3 
> (rev. 0x01)
> uhci2: interrupting at irq 9
> uhci2: setup of reserve of size 262144 successful; p 01873000 v 0xda9e7000
> usb2 at uhci2: USB revision 1.0
> uhub2 at usb2
> uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub2: 2 ports with 2 removable, self powered
> ehci0 at pci0 dev 29 function 7: Intel 82801DB/DBM USB EHCI Controller (rev. 
> 0x01)
> ehci0: interrupting at irq 3
> ehci0: EHCI version 1.0
> ehci0: companion controllers, 2 ports each: uhci0 uhci1 uhci2
> ehci0: setup of reserve of size 262144 successful; p 018b8000 v 0xdaa2d000
> usb3 at ehci0: USB revision 2.0
> uhub3 at usb3
> uhub3: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
> uhub3: single transaction translator
> uhub3: 6 ports with 6 removable, self powered
>  [...]
> uhidev0 at uhub0 port 2 configuration 1 interface 0
> uhidev0: Logitech USB Optical Mouse, rev 1.10/21.10, addr 2, iclass 3/1
> ums0 at uhidev0: 3 buttons and Z dir.
> wsmouse0 at ums0 mux 0
>  [...]
> umass0 at uhub3 port 3 configuration 1 interface 0
> umass0: Genesys Logic USB TO IDE, rev 2.00/0.02, addr 2
> umass0: using SCSI over Bulk-Only
> scsibus0 at umass0: 2 targets, 1 lun per target
> sd0 at scsibus0 target 0 lun 0: <ST32122A, , 0811> disk fixed
> sd0: fabricating a geometry
> sd0: 2014 MB, 2014 cyl, 64 head, 32 sec, 512 bytes/sect x 4124736 sectors
> sd0: fabricating a geometry
> 
> 
> BUT if we try to plug the same external disk into a new Optiplex GX280 we see 
> nothing:
> 
> uhci0 at pci0 dev 29 function 0: Intel 82801FB/FR USB UHCI Controller #0 (rev. 
> 0x03)
> uhci0: interrupting at irq 9
> uhci0: setup of reserve of size 262144 successful; p 01fb8000 v 0xdb451000
> usb0 at uhci0: USB revision 1.0
> uhub0 at usb0
> uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> uhci1 at pci0 dev 29 function 1: Intel 82801FB/FR USB UHCI Controller #1 (rev. 
> 0x03)
> uhci1: interrupting at irq 5
> uhci1: setup of reserve of size 262144 successful; p 01ffe000 v 0xdb494000
> usb1 at uhci1: USB revision 1.0
> uhub1 at usb1
> uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub1: 2 ports with 2 removable, self powered
> uhci2 at pci0 dev 29 function 2: Intel 82801FB/FR USB UHCI Controller #2 (rev. 
> 0x03)
> uhci2: interrupting at irq 3
> uhci2: setup of reserve of size 262144 successful; p 02043000 v 0xdb4d9000
> usb2 at uhci2: USB revision 1.0
> uhub2 at usb2
> uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub2: 2 ports with 2 removable, self powered
> uhci3 at pci0 dev 29 function 3: Intel 82801FB/FR USB UHCI Controller #3 (rev. 
> 0x03)
> uhci3: interrupting at irq 10
> uhci3: setup of reserve of size 262144 successful; p 02088000 v 0xdb51e000
> usb3 at uhci3: USB revision 1.0
> uhub3 at usb3
> uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub3: 2 ports with 2 removable, self powered
> ehci0 at pci0 dev 29 function 7: Intel 82801FB/FR USB EHCI Controller (rev. 
> 0x03)
> ehci0: interrupting at irq 9
> ehci0: EHCI version 1.0
> ehci0: companion controllers, 2 ports each: uhci0 uhci1 uhci2 uhci3
> ehci0: setup of reserve of size 262144 successful; p 020cd000 v 0xdb564000
> usb4 at ehci0: USB revision 2.0
> uhub4 at usb4
> uhub4: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
> uhub4: single transaction translator
> uhub4: 8 ports with 8 removable, self powered
>  [...]
> hub5 at uhub3 port 1
> uhub5: Dell Dell USB Keyboard Hub, class 9/0, rev 1.10/2.00, addr 2
> uhub5: 3 ports with 2 removable, bus powered
> uhidev0 at uhub0 port 1 configuration 1 interface 0
> uhidev0: Logitech Optical USB Mouse, rev 2.00/3.40, addr 2, iclass 3/1
> ums0 at uhidev0: 3 buttons and Z dir.
> wsmouse0 at ums0 mux 0
> uhidev1 at uhub5 port 1 configuration 1 interface 0
> uhidev1: Dell Dell USB Keyboard Hub, rev 1.10/2.00, addr 3, iclass 3/1
> ukbd0 at uhidev1
>  [...]
> wskbd1 at ukbd0 mux 1
> wskbd1: connecting to wsdisplay0
> uhidev2 at uhub5 port 1 configuration 1 interface 1
> uhidev2: Dell Dell USB Keyboard Hub, rev 1.10/2.00, addr 3, iclass 3/0
> uhidev2: 3 report ids
> uhid0 at uhidev2 reportid 1: input=1, output=0, feature=0
> uhid1 at uhidev2 reportid 2: input=1, output=0, feature=0
> uhid2 at uhidev2 reportid 3: input=3, output=1, feature=1
>  [...]
> 
> 
> Both systems are running identical kernels and userlands and are -current from 
> around November and its not just this external drive, the 280's seem a lot 
> more finicky with usb devices in general.  Any ideas whats going on here?  
> How to make the 280's work?
> 
> cheers
> mark
>