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Z8530_READ_PORT(9) Internal Functions Z8530_READ_PORT(9)
NAME
z8530_read_port - Architecture specific interface function
SYNOPSIS
int z8530_read_port(unsigned long p);
ARGUMENTS
p
port to read
DESCRIPTION
Provided port access methods. The Comtrol SV11 requires no delays
between accesses and uses PC I/O. Some drivers may need a 5uS delay
In the longer term this should become an architecture specific section
so that this can become a generic driver interface for all platforms.
For now we only handle PC I/O ports with or without the dread 5uS
sanity delay.
The caller must hold sufficient locks to avoid violating the horrible
5uS delay rule.
AUTHOR
Alan Cox <alan@lxorguk.ukuu.org.uk>
Author.
COPYRIGHT
Kernel Hackers Manual 2.6. November 2013 Z8530_READ_PORT(9)
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