Re: [PATCH] IBM Lanstreamer bugfixes

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri Feb 01 2002 - 18:40:41 EST


> handle adapters which write to one address and read from another for the
> same variable? I'm guessing it flushes all writes on a read? This is
> exactly what lanstreamer does, and I'm thinking this may have caused
> problems before.

You probably want to get the actual documentation and read it - there are
a set of guarantees that I/O's do not pass one another. A read will not pass
a write for example. When you think about PCI as a message passing system
in both directions its generally a lot better for your head 8). The guarantees
are also defined in terms of PCI functions rather than a single port

Alan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:19 EST