Z8530_RX(9) Internal Functions Z8530_RX(9)
NAME
z8530_rx - Handle a PIO receive event
SYNOPSIS
void z8530_rx(struct z8530_channel * c);
ARGUMENTS
c
Z8530 channel to process
DESCRIPTION
Receive handler for receiving in PIO mode. This is much like the async one but not quite the same or as complex
NOTE
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
Called with the device lock held
AUTHOR
Alan Cox <alan@lxorguk.ukuu.org.uk>
Author.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 Z8530_RX(9)
