Hi,
The patch is needed for 2 issues.
1. Support Hermon chip, (ConnectX)
2. Add work around for read request. (below the WA described with
more details.)
Reuven.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Issue:
In ConnectX A0, when accessing the device crspace memory (BAR0),
read request may pass a write request.
Problem:
When you write to a "go" bit and then poll it for completion, the
read request may pass the "go" bit write, and the status
of the go bit from before the current activation (usually this
status is "DONE") is retrieved.
Solution:
This is explained in the code:
________________________________
From: Fab Tillier [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 09, 2008 8:16 PM
To: Reuven Amitai; [email protected]
Subject: RE: [PATCH] mtcr
Ok. Can you describe what the problem is that is being worked around?
Thanks,
-Fab
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