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 AT lxorguk.uk>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                        Z8530_READ_PORT(9)