On 08/29/2011 05:44 PM, István Váradi wrote:
Hi,
2011/8/17 Antti Palosaari<crope@xxxxxx>:
On 08/15/2011 02:14 PM, Antti Palosaari wrote:
On 08/15/2011 02:51 AM, Antti Palosaari wrote:
Biggest problem I see whole thing is poor application support. OpenCT is
rather legacy but there is no good alternative. All this kind of serial
drivers seems to be OpenCT currently.
I wonder if it is possible to make virtual CCID device since CCID seems
to be unfortunately the only interface SmartCard guys currently care.
I studied scenario and looks like it is possible to implement way like,
register virtual USB HCI (virtual motherboard USB controller) then
register virtual PC/SC device to that which hooks all calls to HW via
Anysee driver. Some glue surely needed for emulate PC/SC. I think there
is not any such driver yet. Anyhow, there is virtual USB HCI driver
currently in staging which can be used as example, or even use it to
register virtual device. That kind of functionality surely needs more
talking...
It maybe that smartcard guys care only for CCID, but wouldn't it be an
overkill to implement an emulation of that for the driver? It can be
done, of course, but I think it would be much more complicated than
the current one. Is it really necessary to put such complexity into
the kernel? In my opinion, this should be handled in user-space.
Only De facto serial smartcard protocol is so called Phoenix/Smartmouse,
implementing new protocol is totally dead idea. It will never got any
support.
There is already such drivers, at least Infinity Unlimited USB Phoenix
driver (iuu_phoenix.c). It uses USB-serial driver framework and some
small emulation for Phoenix protocol. Look that driver to see which kind
of complexity it adds. Anysee have *just* same situation.
regards
Antti
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