From: Roland Dreier <rolandd@cisco.com>
Date: Thu, 27 Oct 2005 18:03:38 +0000 (-0700)
Subject: [IB] mthca: first pass at catastrophic error reporting
X-Git-Tag: v2.6.15-rc1~731^2~21^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d155f8cd0d077938d271225d26ee52f8eb26082;p=pandora-kernel.git

[IB] mthca: first pass at catastrophic error reporting

Add some initial support for detecting and reporting catastrophic
errors reported by Mellanox HCAs.  We start a periodic timer which
polls the catastrophic error reporting buffer in device memory.  If an
error is detected, we dump the contents of the buffer for port-mortem
debugging, and report a fatal asynchronous error to higher levels.

In the future we can try to recover from these errors by resetting the
device, but this will require some work in higher-level code as well.
Let's get this in now, so that we at least get catastrophic errors
reported in logs.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
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