[ECOS] How to handle serial port input?

["Tom Vandeplas" <tom dot vandeplas at 4g-radio dot com>]

Hi,

I'm working on a Cirrus edb7212 board. I would like to write a thread to
handle input on the serial port. The ideal would be that the thread
continues as long as there's data available.

I read the "simple serial" driver, as I understand any input to a serial
port is written to a buffer by the kernel, by using "cyg_io_read" one can
read this buffer... is this correct?

If this is correct, how can I know when to read this buffer, polling it all
the time would be a disaster for performance. Is there some way to attach an
interrupt to this or even better is there a synchrioniation primitive
available?

Any input or examples are welcome

Thx, Tom