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From: "Allen Hubbe" <Allen.Hubbe@dell.com>
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Subject: RE: New NTB API Issue
Date: Thu, 22 Jun 2017 18:42:38 -0400
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To: 'Logan Gunthorpe' <logang@deltatee.com>, 'Jon Mason' <jdmason@kudzu.us>
Cc: linux-ntb@googlegroups.com, linux-kernel@vger.kernel.org, 'Dave Jiang' <dave.jiang@intel.com>, 'Serge Semin' <fancer.lancer@gmail.com>, 'Kurt Schwemmer' <kurt.schwemmer@microsemi.com>, 'Stephen Bates' <sbates@raithlin.com>, 'Greg Kroah-Hartman' <gregkh@linuxfoundation.org>
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From: Logan Gunthorpe
> Any thoughts on changing the semantics of mw_get_align so it must be
> called with the link up?

The intention of these is that these calls return information from the =
local port.  The calls themselves don't reach across the link to the =
peer, but the information returned from the local port needs to be =
communicated for setting up the translation end-to-end.

I would like to understand why this hardware needs link up.  Are there =
registers on the local port that are only valid after link up?

Can you post snippets of how ntb_mw_get_align and ntb_peer_mw_get_addr =
might be implemented for the Switchtec?