1Z8530_RX(9)                   Internal Functions                   Z8530_RX(9)
2
3
4

NAME

6       z8530_rx - Handle a PIO receive event
7

SYNOPSIS

9       void z8530_rx(struct z8530_channel * c);
10

ARGUMENTS

12       c
13           Z8530 channel to process
14

DESCRIPTION

16       Receive handler for receiving in PIO mode. This is much like the async
17       one but not quite the same or as complex
18

NOTE

20       Its intended that this handler can easily be separated from the main
21       code to run realtime. That´ll be needed for some machines (eg to ever
22       clock 64kbits on a sparc ;)).
23
24       The RT_LOCK macros don´t do anything now. Keep the code covered by them
25       as short as possible in all circumstances - clocks cost baud. The
26       interrupt handler is assumed to be atomic w.r.t. to other code - this
27       is true in the RT case too.
28
29       We only cover the sync cases for this. If you want 2Mbit async do it
30       yourself but consider medical assistance first. This non DMA
31       synchronous mode is portable code. The DMA mode assumes PCI like ISA
32       DMA
33
34       Called with the device lock held
35

AUTHOR

37       Alan Cox <alan@lxorguk.ukuu.org.uk>
38           Author.
39

41Kernel Hackers Manual 2.6.         June 2019                       Z8530_RX(9)
Impressum