USB Host Controller Problem

USB Host Controller Problem

[Nageswari S]

Hi,

I have a custom PowerPC baord based on IBM 405 core with "No PCI".

I have my USB Host controller (OHCI) based with HC registers from
0xef601200.

When I access these address locations, I am getting kernel panic with
machine check interuupt.

Is there any special setting to enable IO address range.

Any help or suggestion will be very helpful...

Thank you,
Regards,
Nageswari


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Re: USB Host Controller Problem

[Kenneth Johansson]

On Thu, 2002-11-14 at 08:22, Nageswari S wrote:
>
> Hi,
>
> I have a custom PowerPC baord based on IBM 405 core with "No PCI".
>
> I have my USB Host controller (OHCI) based with HC registers from
> 0xef601200.
>
> When I access these address locations, I am getting kernel panic with
> machine check interuupt.
>
> Is there any special setting to enable IO address range.

you use ioremap ?

--
Kenneth Johansson
Ericsson AB                       Tel: +46 8 404 71 83
Borgafjordsgatan 9                Fax: +46 8 404 72 72
164 80 Stockholm                  kenneth.johansson@etx.ericsson.se


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USB Host controller problem

[Nageswari S]

Hi,

I have a custom PowerPC board (IBM 405 Based) with USB - OHCI (Ver
1.1)compliant controller on OPB bus. I have taken SA1111 usb driver as a
refernce and enabled USB. The root hub got initialised and
cat /proc/bus/usb/devices outputs


" T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=
" B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
" D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxP
" P:  Vendor=0000 ProdID=0000 Rev= 0.00
" S:  Product=USB OHCI Root Hub
" S:  SerialNumber=ef601200
" C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
" I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00
" E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms

But, I get following error message when I connect a USB Mouse

usb_control/bulk_msg : timeout
USB device not accepting the new address.

Also, cat /proc/interrupts gets contnious interrupts for usb-ohci....

Could anybody please tell me as to how to write a USB-OHCI host controller
driver for a non-pci paltform....

regards,
Nageswari

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