!
On Wed, 3 Nov 2004 17:22:21 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Wed, 3 Nov 2004, Sara Fonseca wrote:
>
> > ok Alan, thanks.
> > And what would be a good reference on the Transparent SCSI protocol?
>
> There is none. Just use the standard
Hi,
the SCSI-2 specification adresses logical blocks in the commands. I
would like to know what is usually done in storage devices: all they
do is to store this blocks fully or do they apply other thecnique?
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Hi,
i was watching the packets transfered from the host to a pen-drive and
from the pen drive to the host. Seems that the pen drive uses the
RBC(reduced block command). How does that relate to SCSI-2 commands?
Is it a subset?
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Does a a block device have a internal file system or does it just keep
track of the location of the logical blocks that the host sent?
I know it's a simple question, but the answer could help very much..
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Hi,
What is the sequence of SCSI commands issued by the initiator when a
mass storage SCSI compliant Block Device(such as in file_storge.c) is
plugged on the USB?
Where can I find this?
Sara
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AIL PROTECTED]> wrote:
> On Wed, 17 Nov 2004, Sara Fonseca wrote:
>
>
>
> > Hi,
> >
> >
> > What is the sequence of SCSI commands issued by the initiator when a
> > mass storage SCSI compliant Block Device(such as in file_storge.c) is
> > plugg
I managed to build and load the drivers, but how do I start testing
read and write operations for example?
On Mon, 22 Nov 2004 10:33:39 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Mon, 22 Nov 2004, Sara Fonseca wrote:
>
> > ok Alan, thanks...
> > but how do
Hi,
my USB device needs to present itself as a mass storage device, but
needs also to be controled by our own driver that manages other
functions(not storage).
Do I need to simulate a hub?
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Hi,
how is the address mapping usually done in a block device?(since all
SCSI commands see are logical blocks, the physical address that
actually stores the logical block information shouldnt be always the
same, should be dynamic (so you don't keep writing some physical
blocks more frequently than
What is the maximum size of the logical block in the SCSI ??
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I see...:)
Is there any flow control problem(or something else) if a larger size is used??
On Mon, 29 Nov 2004 12:03:48 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Mon, 29 Nov 2004, Sara Fonseca wrote:
>
>
>
> > What is the maximum size of the logical blo
> > I managed to build and load the drivers, but how do I start testing
> > read and write operations for example?
>
> Just do reads and writes to the device corresponding to your gadget. For
> instance, if the gadget shows up as /dev/sda, then do reads and writes to
> /dev/sda. Example: dd if=
L PROTECTED]:/home/knoppix# dd /dev/sda if=/dev/sda bs=512 count=1
dd: opening `/dev/sda': No medium found
On Tue, 30 Nov 2004 15:53:54 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Tue, 30 Nov 2004, Sara Fonseca wrote:
>
>
>
> > > > I managed to build
Hi,
i have configured a mass storage function using one of the interfaces
of my device, using the scsi subprotocol. The enumeration works great,
but after the set interface command, nothing else happens.Have anyone
seen this before? Any help is welcome!
--
Hi,
Are any of the mode pages mandatory when for a pen drive?
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Hi,
the first time you plug a pen drive, it doenst have any information,
so what happens? Should the scsi system start to send write commands
with that information? How does the pen drive tells the scsi that it
is empty? ( maybe answering the read command with a sense data BLANK
CHECK?
In the UFI specification: " If the medium is unformatted, unknown, or
not presented, the UFI device fails the READ CAPACITY and sets the
sense key to an appropriate value as listed in section 5." Which sense
key is that?
thanks!
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Hi,
when I connect my pen drive in linux(kernel 6.9) the filesystem
automounts, but as read-only. Another issue is that i cant read the
files(I/O errors). The pen drive was previously formatted with fat in
windows.
Is it a firmware error? If so, is there a good linux sniffer?
thanks!
Sara
---
e i
tested the pen drive with 512-byte block size, and it works from one
system to the other. Is that possible?
thanks!
Sara
On Wed, 19 Jan 2005 10:53:13 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Tue, 18 Jan 2005, Sara Fonseca wrote:
>
> > Hi,
> >
> > whe
Hi,
In a Mass Storage Device, if a physical block is damaged, and one or
more logical blocks are lost, must the device remap the logical blocks
to different addresses? What are the alternatives(you might not have
more spave in the physical memory).
--
> > Hi,
> >
> > In a Mass Storage Device, if a physical block is damaged, and one or
> > more logical blocks are lost, must the device remap the logical blocks
> > to different addresses? What are the alternatives(you might not have
> > more spave in the physical memory).
>
> The device is not ob
On Thu, 17 Feb 2005 10:38:36 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Thu, 17 Feb 2005, Sara Fonseca wrote:
>
> > I simulated a block error doing this: when the host tries to read one
> > specific logical block, I change some bytes. The I try two things:
On Thu, 17 Feb 2005 14:53:01 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Thu, 17 Feb 2005, Sara Fonseca wrote:
>
> > On Thu, 17 Feb 2005 10:38:36 -0500 (EST), Alan Stern
> > <[EMAIL PROTECTED]> wrote:
> > > On Thu, 17 Feb 2005, Sara Fonseca w
Hi,
I am using libusb clear_halt function, to set the data toggle bits to
0. It suceeds in the first bulk endpoint, but not in the second. In
that case it returns:
Clear Halt EP3: could not clear/halt ep 131: Connection timed out
What might be happening?
I also tried to use usb_reset. Every tim
Hi,
i am trying to develop a new usb device that should use linux support
for usb pen drives. I would like some help on what it takes to
acomplish that. Where is the source code for the drivers? Is it
necessary to modify something in the drivers or do I just need to
develop a device that is compa
Ok, thanks!
But i dont know wich kind of protocol.
Should i start the design of a a UFI Device? What is actually used for
Pen Drivers?
Sorry if i am too wrong, but i am new at this.
> > Hi,
> >
> > i am trying to develop a new usb device that should use linux support
> > for usb pen drives. I wo
ok Alan, thanks.
And what would be a good reference on the Transparent SCSI protocol?
On Wed, 3 Nov 2004 13:55:47 -0500 (EST), Alan Stern
<[EMAIL PROTECTED]> wrote:
> On Wed, 3 Nov 2004, Sara Fonseca wrote:
>
> > Ok, thanks!
> > But i dont know wich kind of protocol
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