ssing some fundamentally easier way of doing this?
Thanks,
Steve Conklin
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alternate support through the hiddev interface?
Does CONFIG_USB_HIDINPUT seed to be set for your average user?
If so, do I need to blacklist my device in the hid driver to prevent it from
being grabbed?
Thanks,
Steve
___
Don't m
here is also an ioctl in net_device but it's a different
declaration and I've found comments in network source to the effect that
this ioctl is not used anymore.
I appreciate your help,
Steve Urquhart
___
[EMAIL PROTECTED]
To u
e a catc right
now, so maybe someone else could verify this. The advantage of this
technique is that the normal, healthy devices get enumerated quickly.
Regards, Steve
__
Steve Calfee-- embedded systems consultant
[EMAIL PROTECTED]
___
eople are
collecting vendor/product numbers so here they are for the Cannon N650U
as reported in /proc/bus/usb/devices:
P: Vendor=04a9 ProdID=2206 Rev= 1.00
Steve
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a different order. Of course, cdrecord absolutely refuses to
do anything with a device that doesn't look like a CDROM.
Can anyone take a guess at what is going on here?
Any help would be greatly appreciated,
-Steve
--
Steve Purcell
http://advogato.org/person/purcell
---
US_FL_FIX_INQUIRY_CD flag and corresponding code alongside the
US_FL_FIX_INQUIRY code.
Very best wishes,
-Steve
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http://advogato.org/person/purcell
diff -Naur kernel-source-2.4.21-pre3/drivers/usb/storage/unusual_devs.h kernel-source-2.4.21-pre3.patched/drivers/usb/storage
always arrive and arrive with good data. The only guarantee is bandwidth.
Regards, Steve
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devices. In this case being on a common usb
bus would be necessary. If you need a continuous supply of data, maybe you
could ignore bad iso packets and reuse previous data?
Good luck, Steve
Ted
Steve Calfee wrote:
> At 10:38 AM 5/29/03 -0700, Ted Huntington wrote:
> >Is syncronizing 2 is
> From: Luke Hutchison <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Date: 22 Jun 2002 14:54:09 -0600
> Subject: [linux-usb-devel] usb-uhci loses my USB mouse and keyboard periodically
> P.S. A separate question: What would be causing the message "Disabling
> reads from problem bidirectional pr
probably, if you have both SOF and read/write interrupts on, you are
getting one interrupt with both events on by the time it gets to your isr
routine.
One other question, why does a device care about SOFs? The only thing I can
think of is counting off 3ms without
that defines a timeout on the bus, so the sender knows that the
transmission failed and needs to be retried. The problem is if the host
screws up the data0/1 state the device will continue to no-response the bad
packet forever...until a higher level timeout occurs in the host and
HID by
Microsoft?? and storage by ???). Some classes even do SETUP commands as
part of a data transfer protocol, pretty weird and restrictive of future
combo devices. I would guess this is the case for storage and why STALL
would be common.
Regards, Steve
>On Tue, Jul 16, 2002 at 11:45:28AM
Good day,
I'm testing a USB2 hard drive box under 2.4.19-pre10 with mixed results,
mostly lousy. I'm getting hard lockups (keyboard/touchpad
nonresponsive, external access to running SSHD futile) in various
circumstances which all seem to inhibit logging.
So how should I collect debug info to d
p 14,3
Oct 16 21:29:47 fs kernel: usbaudio: unregister mixer 14,0
Oct 16 21:29:47 fs kernel: usbaudio: unregister mixer 14,16
Thanks in advance,
----
Steve Edwards [EMAIL PROTECTED] Voice: +1-760-468-3867 P
otg devices to test the system withany
suggestions? Being able to buy "cheap" consumer hardware for testing
implementations is invaluable.
Regards, ~Steve
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d has a pullup resistor
on D+ (for full speed device), after the chirp. It looks like the device
thinks it is high speed, while the host is in full speed? The device is seen
originally or the host would not reset the bus. Then the host starts SOFs
and looks like it no longer sees the pullup and
ing to the device,
which is exactly what happens when it finally starts the enumeration.
Every PC/BIOS/OS will probably have a slightly different sequence during its
boot up sequence. I would expect any one instance of PC/BIOS/OS to boot the
same though.
It is not clear to me why you think ther
r, I've only located one: the Q-Stor
IrDA QIRU2, which appears as a Mobile Action MA-620, handled successfully
by the pl2303.c driver (well,it works at 9600 and 2400 baud; I haven't
gotten it to work at 19200).
Thanks,
steve
f the time). HS is supposed
to fall back to FS for all usb 2.0 devices, but it does seem that
occasionally some devices are not 100% compliant :)
>>
>>The above experiments do not indicate hardware incompatibility. Do you
>>agree ?
>>
tion as a full
speed device about 5% of the time. A bus reset would not recover the device.
A port power off then on would get it started again. I don't remember the
brand of that key, What is your key string descriptors, maybe I will
remember if that is the flaky device if I hav
em. Congrats you found another problem device.
Regards, Steve
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ter
detection by counting the number of SOFs after device detection (The start
of the trace win98=138 frames winXP=28 frames). You can count the number of
ms after reset by counting the SOF after the SEO reset device 0 and got
ready to set an address (win98=44 frames winXP=17 frames).
ar, with the 2.6.5
kernel. I'm on Fedora Core 2 with the stock 2.6.10-1.9_FC2 kernel now.
Any news would be good.
Thank you all for your time.
Steve Hosgood.
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g bulk packets are 512 bytes, so
it seems...
I'll follow up tomorrow with the other debug info that you request.
Steve
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On Wed, 2005-02-09 at 07:33, Greg KH wrote:
> On Tue, Feb 08, 2005 at 02:05:04PM +0000, Steve Hosgood wrote:
> >
> > Briefly:
> > I've written a driver for a USB camera which sends 1600x1200 or 800x600
> > images across a USB 2.0 bulk pipe. It works fine in 1600x1
you slow the 1600x1200 camera down much below
4.4fps, the FX2 seems to fall over, rather like you suggest. That indeed
would seem to be firmware trouble, but not really do do with what I'm
seeing here, which according to USB bus analysis really does seem to be
down to linux choosing to igno
next tenth of a second]
The timebomb goes off.
Tell the camera to stop streaming.
Release all URBs.
This is as close as I can get to diagnostics, since I don't have useful
access to the next layer down.
Steve
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with
suggestions as to how we might home in on this problem. It may well not
be as far down as ehci-hcd. Where else can I put a "debug=X" at module
load time, and what values of X would be useful do you think?
> Is it possible for you to test the camera with a different computer?
>
D
On Fri, 2005-02-11 at 17:37, David Brownell wrote:
> On Friday 11 February 2005 9:14 am, Steve Hosgood wrote:
> > On Fri, 2005-02-11 at 16:36, Alan Stern wrote:
> > > > Meanwhile, I ran my driver with detailed debugging of its own and what I
>
So I'd say that your first hypothesis below pans out nicely:
On Tue, 2005-02-15 at 23:09, David Brownell wrote:
> On Monday 14 February 2005 9:17 am, Steve Hosgood wrote:
> >
> > qh/cf49c100 dev2 hs ep2 42002202 4000 (8a00ad80* data1 nak0)
> > da98f360 in len=0
On Wed, 2005-02-16 at 19:37, David Brownell wrote:
> On Wednesday 16 February 2005 3:37 am, Steve Hosgood wrote:
> >
> > Basically, David, your suggestion of "try small URBs" works! I am now
> > seeing 40 fps from my camera with URBs of 4K, 8K and 16K.
>
> T
e refuses to oblige.
It's just thoughts.. Anyone got any good ideas for ways to test them?
I'll run experiments on my failing machine at home if anyone has
suggestions.
The "correct" behaviour for FlightGear should be to run, but with a
uselessly slow frame rate on screen, sur
ge their string descriptors
while in use, but I have not seen one. In fact strings are pretty useless in
a device, many don't even have any strings.
Regards ~Steve
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On Wed, 2005-03-02 at 18:28, David Brownell wrote:
> On Wednesday 16 February 2005 3:37 am, Steve Hosgood wrote:
> > Basically, David, your suggestion of "try small URBs" works! I am now
> > seeing 40 fps from my camera with URBs of 4K, 8K and 16K.
> OK, then this
cribe, use the last form field at:
> >http://lists.sourceforge.net/lists/listinfo/linux-usb-devel
>
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MontaVista Software, Inc.
office:408-328-9008, fax:408-328-9204
http://www.mvista.com
ent, so the only remaining
controller-aware buffer that was cacheable was the TDs data buffer.
Steve
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ving reverse mappings especially
on
certain architectures, but thats for stuff like cache management. Its
stuff
the drivers have no business poking their noses directly into
Which brings us back to the OHCI driver using a hash table to
store bus-to-virt entries? The *BSD driver does this.
--
Stev
ed in td_alloc and td_free. Seems familiar.
Brad, Steve -- that kind of thing? It'd be great to see a patch
along these lines. I think Roman's right: most systems won't
have many tds active at a time. Usually one td per urb.
- Dave
Hi Dave,
Looks good to me. I like your use
a that adds locks around hash_add_ed_td() and
hash_free_ed_td(). I hope this fixes the chaining corruption.
Test again on
your testbox and let me know.
Steve
--
Steve Longerbeam
MontaVista Software, Inc.
office:408-328-9008, fax:408-328-9204
http://www.mvista.com
--- drivers/usb/usb-ohci.h.orig Mo
he lookup routine dma_to_ed_td().
It's always a fast lookup, and it's possible the list could
change in the middle of the search either by interrupt code
or another processor, although I don't think currently the
add/free routines are called at interrupt time.
Steve
--- drivers
on your SH4 setup too!
Hi Dave,
I think you meant to say it's been tested on a few MIPS machines
that
are *not* DMA cache coherent.
Steve
> On overdrive there is a restriction doing DMA across PCI. We can only
> DMA from memory behind the PCI bus, so all the DMA' able memory must
Hi,
I have worked with both the Philips UDA1321 and UDA1325. They both have
very long reset times, during which they do not respond to bus traffic. I
think it is around 300ms of reset times. I don't recall if it was both from
power on AND USB bus reset or just power on. Windows retries enumera
umentation explaining how to construct and submit a similar URB using
the USB support in the 2.4 kernel.
Thanks,
Steve.
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intless effort on the device's part. Has
anyone seen (with a bus analyzer like CATC) a device respond in the same
frame in which in NAKed? I think this attempt at optimizing the USB bus
bandwidth should be removed from the kernel, it just confuses people.
~Steve
>- Dave
>
>
>--
From: "victor1 torres" <[EMAIL PROTECTED]>
>I bought a HP Apollo 1250c printer and I told that I had to bidirectional
>cable to get my printer to work because I have all USB on my computer I was
>woundering how I would get my printer to work. IF you need any thing else
>I´d be happy to send it
plug.
Might cause all sorts of interesting and shocking events!
Regards, Steve.
Begin forwarded message:
Date: Thu, 20 May 2004 15:45:30 -0400
To: [EMAIL PROTECTED]
On my USB cables that have connectors on both ends, one end is live when
the other end is plugged into the computer. I can get a p
Only if it gets a short packet. But what if the length is divisible by
maxpacketlen? The solution is to send a ZLP.
I don't write windows minidrivers but I know someone who does. There is some
kind of endpoint setup bit that sa
Apparently my USB controller is flippin' out, and the driver is
throwing it out of the game. 3 strikes! It's outta here!
Please let me know what information I can provide that might be helpful.
I'm getting a lot of this in messages.log
Mar 31 15:06:34 tbone drivers/usb/class/usblp.c: usblp0:
stead of every 2 seconds.
It is not clear what use (in a non-real time OS), the frame count is in
userspace?
Regards, Steve
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inux is not a good solution for very low
latency requirements. I think a hardware redesign with intelligence
in the gadget to prevent disasters would be much more sane.
Regards, Steve
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set up
and ready to use.
Regards, Steve.
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-(which is 256, 512 or 1024 ms).
Regards, Steve
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t;CONFIG_USB_STORAGE_SDDR55=y
># CONFIG_USB_STORAGE_JUMPSHOT is not set
># CONFIG_USB_STORAGE_ALAUDA is not set
># CONFIG_USB_STORAGE_KARMA is not set
>
>Any other ideas other than lack of power? Its plugged into an Alps 7 port
>USB2.0 hub, which is itself powered from the USB c
>
I think all three of those stores will have a powered usb 2.0 hub for $40 to
$50 bucks. Return it, if it doesn't fix your problem.
But hey, if you want a new mobo, go for it. It just sounds like one of those
jokes
th usb
1.0 and 2.0. If it did that it would show:
wMaxPacketSize 0x1400 3x 1024 bytes
Regards, Steve
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my questions are has this been tested? Is it a problem with my
user mode program? Is my kernel too old? Should I keep looking for the cause?
Thanks, Steve
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At 10:42 PM 7/16/2007, David Brownell wrote:
>On Monday 16 July 2007, Steve Calfee wrote:
> > I am working on a project using a generic (non-FPGA) cypress fx2 to
> > test host controllers.
> >
> > The good news is that Linux runs interrupt IN/OUTs at 3x1024 byte
>
se commands are standard set-address, get-device-descriptor,
get-configuration-descriptor, and set-configuration commands. They do
come from the USB stack. Normally they would be the first commands sent
to a newly-connected device.
> hci_submit_urb: flags 0 length 1 length2 0 packets 0 interval
At 10:49 AM 12/2/2003 +, Alex Bennee wrote:
On Mon, 2003-12-01 at 21:44, Steve Calfee wrote:
> At 11:04 AM 11/29/2003 -0500, Alan Stern wrote:
> >On Fri, 28 Nov 2003, Andrew Heaton wrote:
> >
> > > I am trying to get a Freecom USB stick (0c76:0005) working with
>
standards, the one
from www.usb.org and the defacto one from Microsoft. I know that Win98 does
not enforce the "no low speed bulk" rule. So if we (Linux) attempt to
enforce the rule some device (current or future) may not work in Linux
while it works in shudder, Windows.
Regards, Ste
address will go to 127 and then wrap back to 2.
Hope this helps,
Steve.
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are using an ancient kernel interfacing via an unknown bus to
> your
> custom hardware. What you have to do is UTSL and look at a comparable
> driver
> and how it tied into the bus, for instance if you have an onchip
ethernet
> mac/phy and it is controlled by a kernel driver you can tr
emblies are
prohibited.
The spec also forbids extension cables, and I have two devices that came
with them. Protocols are rules. People violate rules. Expecting an OS to get
around violations can be a never ending game.
Regards ~Steve
--
From: Jon Nettleton <[EMAIL PROTECTED]>
To: Steve Calfee <[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED], linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] ehci_hcd proper negotiation down to usb 1.1
Date: Thu, 06 Oct 2005 20:58:01 -0400
On Thu, 2005-10-06 at 15:39
] and we will get back to you as soon as
possible.
I Await your Urgent Response.
Warmest Regards,
Mr., Steve Douglas.
CEO Microlinks Fabrics & Textiles.
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i do a "cat [text file] > lp0" i get nothing.
Currently I'm using Fc4 with the latest 2.6.14 errata kernel but this
condition occurs on all kernels. Any suggestions?
Steve Bangert
Here's dmesg with usb debug enabled in kernel config and in usblp.c in a
vanilla 2.6.
On Mon, 2005-11-21 at 10:06 -0500, Alan Stern wrote:
> On Sun, 20 Nov 2005, Steve Bangert wrote:
>
> > Alan,
> >
> > I originally posted this message on usb-devel list but got no response,
> > can you take a look at this please. I have a usbmon trace if that he
On Mon, 2005-11-21 at 12:11 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > > In that run-on sentence you said: when you reboot you can't print, when
> >
> > With the printer power left on.
>
> Is that true every time or only s
On Mon, 2005-11-21 at 13:53 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > On Mon, 2005-11-21 at 12:11 -0500, Alan Stern wrote:
> > > On Mon, 21 Nov 2005, Steve Bangert wrote:
> > >
> > > > > In that run-on sente
On Mon, 2005-11-21 at 16:08 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > > Let's be clear. There's no point looking at log messages for a working
> > > printer; the only thing that might help is log messages for when the
> >
On Mon, 2005-11-21 at 17:20 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > > daa3b200 5540696 S Bi:006:02 -115 8192 <
> > > d357fb00 5540774 S Ci:006:00 s a1 01 0001 1 <
> > > daa3b200 5541970 C Bi:006:02 0 0
>
On Tue, 2005-11-22 at 10:49 -0500, Alan Stern wrote:
> On Tue, 22 Nov 2005, Steve Bangert wrote:
>
> > I made two text files, one file had 8 one's in it and the other has 16
> > one's in it, i sent those files to the printer device node one after the
> > other w
827352 C Bo:003:01 0 4096 >
d86cfe00 2949827391 S Bo:003:01 -115 251 = 000103fc fc00010f f0fc0001
3fc0fc00 00fffc00 0103fcfc 00010ff0 fc00013f
d86cfe00 2949828359 C Bo:003:01 0 251 >
d86cfe00 2950231072 S Bo:003:01 -115 1987 = c0003ff0 0300 00ffc081
00810081 008100d5 00c30001 3ff0fc00 01ff
On Tue, 2005-11-22 at 16:51 -0500, Alan Stern wrote:
> On Tue, 22 Nov 2005, Steve Bangert wrote:
>
> > Ok, here's the two raw text files sent directly to the device node,
> > this one a repost of the non-working printer:
> >
> > ddb97300 1765765675 S Bi:003:02
On Wed, 2005-11-23 at 10:54 -0500, Alan Stern wrote:
> On Wed, 23 Nov 2005, Steve Bangert wrote:
>
> > > These traces show that the same data is getting sent to the printer in the
> > > same way each time. So there's nothing wrong with the printing procedure
>
On Sun, 27 Nov 2005, Steve Calfee wrote:
> >When a control request arrives on ep0 and the gadget has to do a lot of
> >processing before completing the data or status stages of the request,
> >there's a possibility that the host might time out and send another
> >req
On Wed, 2005-11-23 at 21:58 -0500, Alan Stern wrote:
> On Wed, 23 Nov 2005, Steve Bangert wrote:
>
> > > What happens if you move or rename the usblp.ko driver module, so that
> > > it's not available at boot time? You could then insmod it later on.
> &
On Tue, 2005-11-29 at 11:31 -0500, Alan Stern wrote:
> On Tue, 29 Nov 2005, Steve Bangert wrote:
>
> > Five days later the printer decides to stop working again, so here's a
> > trace when i insmod the printer driver ( printer inop.)
>
> You know, this suggests st
On Tue, 2005-11-29 at 10:49 -0800, Pete Zaitcev wrote:
> On Tue, 29 Nov 2005 03:03:15 -0800, Steve Bangert <[EMAIL PROTECTED]> wrote:
>
> > I tried getting a usbmon trace while doing an insmod of uhci-hcd.ko but
> > there's a chicken and egg scenario, /sys/kernel/
s viewable on a windows box with SnoppyPro
installed, it has a nice gui to read it in, an export of that same file
is attached.
Steve
GET_DESCRIPTOR_FROM_DEVICE
0
-1
CONTROL_TRANSFER
0
-1
Surely its a matter of telling hotplug's input.agent (or similar) to
recognize the screen as a mouse instead of a joystick?
Is the correct file to modify:
/lib/modules//modules.inputmap
(?)
and if so is there a reference for how to determine the correct values?
Tha
Hi,
Steve, is this problem still present in 2.6.12-rc5? If so, can you pelase
send a fresh description?
I remember that I have sent email to LKML that the problem has been fixed
with 2.6.11. However I got another usb (not the one mentioned in this
email) which has the same problem with
Those are really ancient kernels, I'm afraid. Are you able to test
2.6.12-rc5?
I am compiling, will send result soon. :-)
Cheers,
!DSPAM:4295b7d4953581605017493!
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Those are really ancient kernels, I'm afraid. Are you able to test
2.6.12-rc5?
Both are working with 2.6.12-rc5.
is there a changes in the device name? it used to be an scsi devices (sda,
etc..) now devices name is uba . Such changes may confuse some tools.
However I got an OOPs (not usb-s
sping now, since
someone else with a similar MB is also having problems.
Ideas? Hoping I'm not stuck with a usb2.0 add-on card,
Steve
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will try to
do a converter to run usbmon output through this AWK decoder program. (I
don't have a working Linux system right now). If I can do a converter I
think this GAWK program will help make the usbmon stuff more helpful.
Regards ~Steve
>The tcpdump supports that, and i
On Sun, 10 Jul 2005 21:13:13 -0700 Steve Calfee wrote:
| > >From: Pete Zaitcev <[EMAIL PROTECTED]>
| > >To: randy_dunlap <[EMAIL PROTECTED]>
| > >Cc: [EMAIL PROTECTED], linux-usb-devel@lists.sourceforge.net
| > >Subject: Re: [linux-usb-devel] Patch to m
t;
>---
>~Randy
This comes up all the time. Unless mot/freescale has changed their CPM you
are in trouble. Your chip seems to have a nice PCI bus, I recommend adding
an external ehci or ohci controller.
See: http://sourceforge.net/mailarchive/message.php?msg_id=10737040
or search the list arc
>On Sun, 10 Jul 2005 21:13:13 -0700 Steve Calfee wrote:
>
>| > >From: Pete Zaitcev <[EMAIL PROTECTED]>
>| > >To: randy_dunlap <[EMAIL PROTECTED]>
>| > >Cc: [EMAIL PROTECTED], linux-usb-devel@lists.sourceforge.net
>| > >Subject: Re: [linux-usb-
Date: Tue, 12 Jul 2005 10:37:59 +0530
Hi Randy, Steve and Group,
Thanks for your quick and positive response.
The information you have provided have helped me a lot as I am new to
this area. I saw all the related codes. Thanks once again.
Steve recommended going by adding an external ehci or
send you
the
> awk script, and maybe together, over time we can improve its decoding?
Hi Steve,
That looks like a really good start to me.
Do you want me to generate some more usbmon logs to test with?
Thanks,
---
~Randy
Hi Randy,
I don't know where to go from here. I kind of think
From: Pete Zaitcev <[EMAIL PROTECTED]>
Date: Thu, 14 Jul 2005 16:13:19 -0700
On Thu, 14 Jul 2005 14:40:41 -0700, "Steve Calfee"
<[EMAIL PROTECTED]> wrote:
> I don't know where to go from here. I kind of think maybe discussing a
tool
> that supports a tool tha
g able to change stuff at a 2ms boundary will trigger artifacts with the
samples too. To me 2ms seems awfully fast for required audio response. On
the other hand, if we are handling 44100 HZ playback we must be able to
handle urbs that are only 10ms long because that is the only way to get one
&
try a vanilla kernel to rule out a Fedora
specific bug. But I can't do that until this weekend at the earliest
since the server is live during weekdays.
Is this the proper list for this problem?
Thanks for any assistance,
Steve Bergman
--
L1 cache and are dirty
(e.g. because they were recently used), I'm assuming cache is
write-back. You start DMA transfer and go on with some other tasks.
For some reason, those dirty lines are forced out of cache, e.g.
because L1 needs cache lines for some other data. During this write
back you o
am only goes up through the chain directly to the root -
what I mean is hubs don't echo downstream data that is going upstream. But
the upstream data is still sent at low speed, if that is what the device
sends.
A PRE pid is sent to tell full speed devices that a l
From: Alan Stern <[EMAIL PROTECTED]>
To: Steve Calfee <[EMAIL PROTECTED]>
CC: linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] Fwd: Re: linux as a hub?
Date: Mon, 11 Dec 2006 15:27:23 -0500 (EST)
On Mon, 11 Dec 2006, Steve Calfee wrote:
> >>Among o
2.6.0-bk2.
Steve
PS. Please cc me, I'm not on this mailing list.
Bus 001 Device 002: ID 04c1:0097 U.S. Robotics (3Com)
Device Descriptor:
bLength18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass2 Communications
bDeviceSubClass 0
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