Hi Peter,
Yes, my key is USB1-only able (works with usb-ohci and without ehci). I will try usbsnoop, thank you!
BTW, I realized that the PCI device 00:0b.1 is the EHCI controler and 00:0b.0 is the OHCI controller. Lilo tries the 00:0b.0, which is thus the right one.
Bye, Remy
Le vendredi 27 juillet à 20:00, Peter Stuge a écrit:
Hi Remy,
On Fri, Jul 27, 2007 at 07:41:59PM +0200, Remy Bruno wrote:
USB key used: 0ea0:6828 Ours Technology, Inc. OTI-6828 Flash Disk Please not that this key boots right using the BIOS (but I would like to avoid using the BIOS), and is correctly recognized by linux (I noticed some similarities between the linux USB driver and the filo USB driver) PCI USB controllers (from lspci): 00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3)
There are three types of USB controllers:
USB 1.1 specifies two of them; UHCI and OHCI. Intel and VIA are UHCI, most others are OHCI.
USB 2.0 specifies only one; EHCI.
EHCI controllers are not backwards-compatible.
In order to still be able to use USB 1.1-only devices with EHCI controllers, all EHCI controllers must also provide one USB 1.1 PCI device for each USB 2.0 port.
FILO does not support EHCI, so all USB devices will be talking to USB 1.1 hosts.
The USB memory is most likely a USB 2.0 device.
But the OTI chipset may not function properly if it is not connected to a USB 2.0 host. That's all too common.
I'm not familiar at all with USB, so I don't know how to debug this, nor what's wrong here.
Start in Linux; make sure there is no EHCI driver in the kernel, only the OHCI driver, and see if the USB memory still works.
If it does - there is nothing wrong with the OTI chipset and there is in fact a bug in FILO. (Also quite possible.)
Then usbsnoop in the Linux system would be used to see what packets go out to the OHCI controller, and then that would be compared with what FILO is doing.
EHCI support in FILO would be nice! :)
//Peter
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