On Jan 12, 2008, at 4:26 PM, Hans Petter Selasky wrote:
On Saturday 12 January 2008, Bernd Walter wrote:
On Tue, Jan 08, 2008 at 11:26:26PM +0100, Øystein Andreassen wrote:
Hello,
I would like to make my FreeBSD pc a USB CD/DVD-ROM for a server.
I have a lot of bootable ISO images and I dont like to waste time
and
CD´s
on burning this images each time I need to use them (I usally damage
or loose
them between each time or they have been updated). So instead I
would
like
to know if it is possible to make the FreeBSD USB stack behave as a
USB slave
and present an ISO image to another machine via a usb host-to-host
cable.
(I need to boot from the CD´s).
A PC has not the required hardware to do so.
There are USB devices and USB hosts.
You can only connect a single USB host to many devices, but not two
hosts together.
There are interlink cables on the market, but those present an USB
device to both sides and are not generic to do anything else than the
profile they are build for.
Hans Petter however did implement USB device software support to
allow
FreeBSD beeing used as a device.
It at least supports the AT91RM9200 internal USB device controller,
but
I don't know if it supports anything else.
Hi,
The current implementation of USB device support only implements CDC
ethernet.
Adding support for a mass storage device is not a big deal. Though
you need
to define an interface for how you will provide your disk or file to
the
interface. Probably handling this from userland will solve your
problem.
Does your box have PCI slots? There are some PCI boards available
for a cheap
price that supports USB device functionality.
I plan to add support for more chips during the spring, but I
haven't decided
which yet.
And I think he just did implement a CDC ethernet device and not
umass,
so software needs to be written anyway.
I've CC'ed him, since he can answer about other hardware that he
possibly supports.
That is correct.
I would have liked to offer the AT91RM9200 based board we produce
ourself, but it wasn't designed for this purpose so our current board
has no device ports.
But we are planning an extended version, so this might change in the
near future.
I have a KB92002B board which I bought
from "http://www.kwikbyte.com/KB9202.html";. It is full speed USB only.
There a USB device controllers that can be added to PCs, but most of
them are more designed for teaching purpose.
For example I'd seen PDIUSBD11 chips hooked up to printer ports, but
this chip is not being manufactured anymore and this type of
interfacing
is very slow.
The situation is much better if you use SCSI.
You can interconnect two SCSI controller together - given that the
addresses on both controller are not configured to be the same.
FreeBSD has code for emulation disk drives with target capable SCSI
controllers, which at least is supported by the ahc(4) driver.
The controller on the other box can just be of any kind.
--HPS
Thank you both very much!
I use a laptop, so both a PCI card with deviceports and scsi are not
possible.
I might have better luck with an iPod or something simmular?
My plan was to do a proof of concept on a PC and then move to a
smaller device anyways. :)
Or maybe I should just drop it. But it would be great to get rid of my
CD case.
Again, Thank you for clarifying.
Regards,
Øystein Andreassen _______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-usb
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
