All current pcie controllers unconditionally use SDR to check the link and
poll for reset. Refactor the code to include device reset in the
port_init_hw() op and add a new check_link() op.
This will make room fro new controllers that do not use SDR for these
operations.
Tested on 460ex.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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