Folks:
I installed 2.4.19 + 2.4.20-rc4 patches + usb patches (and XFS
patches) for my testing kernel. As before (with a stock RedHat 7.3
kernel), the USB card is recognized as a USB2. I use the ehci module.
This is what I see for this card from lspci.
00:0b.0 USB Controller: VIA Technologies, Inc. USB (rev 50) (prog-if 00
[UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 32, IRQ 5
I/O ports at d400 [size=32]
Capabilities: [80] Power Management version 2
00:0b.1 USB Controller: VIA Technologies, Inc. USB (rev 50) (prog-if 00
[UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at d800 [size=32]
Capabilities: [80] Power Management version 2
00:0b.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 51) (prog-if
20 [EHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID): Unknown device
1234
Flags: bus master, medium devsel, latency 32, IRQ 7
Memory at ef001000 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
The usbtree script shows this
[root@squash landman]# /root/usbtree
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ehci-hcd/4p, 480M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci/2p, 12M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci/2p, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci/2p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=uhci/2p, 12M
Yet when I plug in a USB2 drive, it shows up under the USB1 controllers
as a 12 Mbps device. This is the Belkin USB2 drive enclosure. As a
sanity check, I tried it with windows 2000 which recognizes it as a USB2
drive (same controller).
I am assuming that what I need to do is to give either usb-storage or
the USB2 driver hints about what to do with this drive (the
modules.usbmap, or the hotplug usb.distmap, usb.usermap, usb.handmap).
What do I need to do to make the USB2 drive visible using usb-storage
module under Linux? Has anyone done this? I followed the information
on the www.linux-usb.org page. The drive works under USB1 but not USB2
under linux, and as both under windows. Any clue on what I should play
with to make it work? Any documentation on the usb.* files in the
hotplug area? How do I modify them to attach the device to the ehci
driver?
Thanks!
Joe
--
Joseph Landman <landman at scalableinformatics com>
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