z8530_rx (9) - Linux Man Pages
z8530_rx: Handle a PIO receive event
z8530_rx - Handle a PIO receive event
void z8530_rx(struct z8530_channel
- Z8530 channel to process
Its intended that this handler can easily be separated from the main code to run realtime. That'll be needed for some machines (eg to ever clock 64kbits on a sparc ;)).
The RT_LOCK macros don't do anything now. Keep the code covered by them as short as possible in all circumstances - clocks cost baud. The interrupt handler is assumed to be atomic w.r.t. to other code - this is true in the RT case too.
We only cover the sync cases for this. If you want 2Mbit async do it yourself but consider medical assistance first. This non DMA synchronous mode is portable code. The DMA mode assumes PCI like ISA DMA
Alan Cox <alan [at] lxorguk.ukuu.org.uk>