lkml.org 
[lkml]   [2008]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 4/6] Add multi mport support.
On Thu, Jan 31, 2008 at 02:30:13PM +0800, Zhang Wei wrote:
> > -----Original Message-----
> > From: Kumar Gala [mailto:galak@kernel.crashing.org]
> > when we have multiple ports are the device IDs on the ports intended
> > to be unique only to a port or unique across all ports?
> >
> I consider each RIO controller will has its own network, the device IDs
> should be
> unique only in its port network.

This is a bad assumption IMHO. It pushes policy on to the system
designer of a RapidIO network.

It is very possible to use multiple controllers as entry points
in a single RapidIO network fabric space. The reason one would do this
is to provide optimized paths to some endpoints in the system.

If possible, there should never be a policy assumption like this in
kernel space. It's much better to assume that one may or may not
have a unique id space.

-Matt


\
 
 \ /
  Last update: 2008-02-05 17:33    [W:0.142 / U:0.236 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site