How to get /dev/uscanner0 to use ehci at USB2 speed, not uhci ?

[Julian H. Stacey]

Hi,
Reference:
> From:		"Julian H. Stacey" <jhs at berklix.com> 
> Date:		Thu, 17 Sep 2009 17:30:55 +0200 
> Message-id:	<200909171531.n8HFUtYw038501 at fire.js.berklix.net> 

"Julian H. Stacey" wrote:
> Hi FreeBSD-USB@ people,
> With 7.2-RELEASE, how should I get
> /dev/uscanner0 to use ehci at USB2 speed, not uhci at USB1 ?
> (Please feel free to reply RTFM ... URL= )
> 
> Logs & My config & what I've tried / looked at:
> 
> My USB scanner works, but its agoning slow in high res.
> 
> devd:
> Processing event '+uscanner0 vendor=0x04b8 product=0x011d devclass=0xff
>   devsubclass=0x00 release=0x0100 sernum="" intclass=0xff intsubclass=0x00
>   at port=0 interface=0 vendor=0x04b8 product=0x011d devclass=0xff
>   devsubclass=0x00 release=0x0100 sernum="" intclass=0xff intsubclass=0x00
>   on uhub1'
> 
> dmesg extract:
>   ------
>   uhci0: <VIA 83C572 USB controller> port 0xd400-0xd41f irq 21 at device 16.0 on pci0
>   uhci0: [GIANT-LOCKED]
>   uhci0: [ITHREAD]
>   usb0: <VIA 83C572 USB controller> on uhci0
>   usb0: USB revision 1.0
>   uhub0: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
>   uhub0: 2 ports with 2 removable, self powered
>   
>   uhci1: <VIA 83C572 USB controller> port 0xd800-0xd81f irq 21 at device 16.1 on pci0
>   uhci1: [GIANT-LOCKED]
>   uhci1: [ITHREAD]
>   usb1: <VIA 83C572 USB controller> on uhci1
>   usb1: USB revision 1.0
>   uhub1: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
>   uhub1: 2 ports with 2 removable, self powered
>   
>   uhci2: <VIA 83C572 USB controller> port 0xe000-0xe01f irq 21 at device 16.2 on pci0
>   uhci2: [GIANT-LOCKED]
>   uhci2: [ITHREAD]
>   usb2: <VIA 83C572 USB controller> on uhci2
>   usb2: USB revision 1.0
>   uhub2: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb2
>   uhub2: 2 ports with 2 removable, self powered
>   
>   uhci3: <VIA 83C572 USB controller> port 0xe400-0xe41f irq 21 at device 16.3 on pci0
>   uhci3: [GIANT-LOCKED]
>   uhci3: [ITHREAD]
>   usb3: <VIA 83C572 USB controller> on uhci3
>   usb3: USB revision 1.0
>   uhub3: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb3
>   uhub3: 2 ports with 2 removable, self powered
>   
>   ehci0: <VIA VT6202 USB 2.0 controller> mem 0xfae00000-0xfae000ff irq 21 at device 16.4 on pci0
>   ehci0: [GIANT-LOCKED]
>   ehci0: [ITHREAD]
>   usb4: EHCI version 1.0
>   usb4: companion controllers, 2 ports each: usb0 usb1 usb2 usb3
>   usb4: <VIA VT6202 USB 2.0 controller> on ehci0
>   usb4: USB revision 2.0
>   uhub4: <VIA EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb4
>   uhub4: 8 ports with 8 removable, self powered
>   
>   uscanner0: <EPSON EPSON Scanner, class 255/0, rev 1.10/1.00, addr 2> on uhub1
>   uscanner0: at uhub1 port 1 (addr 2) disconnected
>   uscanner0: detached
>   uscanner0: <EPSON EPSON Scanner, class 255/0, rev 1.10/1.00, addr 2> on uhub1
>   uscanner0: at uhub1 port 1 (addr 2) disconnected
>   uscanner0: detached
>   uscanner0: <EPSON EPSON Scanner, class 255/0, rev 1.10/1.00, addr 2> on uhub1
>   ------
> 
> config -x /boot/kernel/kernel 	# includes all of
> 	device  uhci
> 	device  ehci
> 	device  uscanner
> 
> uname -a
>   FreeBSD john.js.berklix.net 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Tue May  5 00:41:36 CEST 2009     jhs@@@john.js.berklix.net:/usr1/src/sys/amd64/compile/JOHN64.small  amd64
> 
> sane-find-scanner -q
> found USB scanner (vendor=0x04b8, product=0x011d) at /dev/uscanner0
> 
> PS I had a quick look at
> 	http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/scanners.html
> but nothing I noticed.

The scanner manufacturer documents hardware as USB-1 :-(
Idealy /var/log/messages might have issued a simple clear warning about that.

> cd /usr/src ; find . -name \*devctl\*
> /share/man/man4/devctl.4
> # no binary just the manual.

Cheers,
Julian
-- 
Julian Stacey: BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com
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