AW: [Oberon] USB Open Host Controller Driver, AosUsbOhci.Mod.

Mon Jul 18 13:54:05 CEST 2005

Hi!

There's a bug in AosUsbOhci.Mod:

Find PROCEDURE PCIFindOhci and remove the two lines:

ELSIF SYSTEM.VAL(SET,pciCmdReg) * {0} = {} THEN
AosOut.String("AosUsbOhci: IO space not mapped."); AosOut.Ln;

Background: Bit 0 of the PCI Command register (part of PCI configuration space each PCI device must implement) indicates whether the device requires its registers to be mapped into  I/O or memory space. OHCI Host Controller always use memory mapped I/O (defined in OHCI specification), so this bit must be zero. Either completely remove the two lines or replace SYSTEM.VAL(SET,pciCmdReg) * {0} = {} by SYSTEM.VAL(SET,pciCmdReg) * {0} # {}, since the device shall not use I/O space.

Cheers,
Sven

________________________________

Von: oberon-bounces at lists.inf.ethz.ch im Auftrag von shark at gulfnet.sd64.bc.ca
Gesendet: Mi 13.07.2005 18:57
An: oberon at lists.inf.ethz.ch
Betreff: [Oberon] USB Open Host Controller Driver, AosUsbOhci.Mod.

Recently I installed a new Belkin F5U220 USB
card in a Pentium system lacking on-board USB. 
The Belkin card supports OHCI and EHCI 1.0.

In Aos.Par I replaced AosUsbUhci.Init with
AosUsbOhci.Init.  The Kernel.Log has this entry

AosUsbOhci: IO space not mapped.

and USB does not work.

My comprehension of PCI and OHCI is minimal. 
Hints or instructions will help.

Thanks,                  Peter E.

Desktops.OpenDoc  http://carnot.pathology.ubc.ca/

--
Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
https://www.mail.inf.ethz.ch/lists/listinfo/oberon