From: Segher Boessenkool <segher@kernel.crashing.org>
To: pterry@micromemory.com
Cc: linuxppc-dev@ozlabs.org, Zhang Wei-r63237 <Wei.Zhang@freescale.com>
Subject: Re: Porting RapidIO from ppc arch to powerpc arch in support of MPC8641D
Date: Wed, 23 May 2007 18:05:43 +0200 [thread overview]
Message-ID: <836bca7802dca173490f4d38e0c48b7a@kernel.crashing.org> (raw)
In-Reply-To: <1179934657.11247.14.camel@pterry-fc6.micromemory.com>
>> The law should really be removed.
> In my application I'm may be using a huge part of the 36-bit address
> space to address multiple remote RIO boards in a peer DMA multicomputer
> application. The default law just for maintenance messages isn't going
> to cut it.
If the firmware sets up the "law", it should put a property
in the node describing the setting. If Linux sets up the
laws, there shouldn't be a property (since it is a policy
decision).
>>> The dbells and mboxs can be removed. The default setting in rio is
>>> okay.
>>
>> this could possibly be useful.
Same issue. Even if the firmware uses a default setting,
it should still put it in the device tree _iff_ it is the
firmware's decision (and not the kernel's).
Segher
next prev parent reply other threads:[~2007-05-23 16:05 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 19:38 Porting RapidIO from ppc arch to powerpc arch in support of MPC8641D Phil Terry
2007-05-22 20:08 ` Segher Boessenkool
2007-05-22 20:09 ` Timur Tabi
2007-05-22 23:05 ` Arnd Bergmann
2007-05-24 6:48 ` Porting RapidIO from ppc arch to powerpc arch in support ofMPC8641D Zhang Wei-r63237
2007-05-24 9:19 ` Arnd Bergmann
2007-05-24 9:44 ` Zhang Wei-r63237
2007-05-24 11:27 ` Arnd Bergmann
2007-05-23 13:26 ` Porting RapidIO from ppc arch to powerpc arch in support of MPC8641D Zhang Wei-r63237
2007-05-23 13:32 ` Mark A. Greer
2007-05-23 14:03 ` Zhang Wei-r63237
2007-05-23 15:42 ` Phil Terry
2007-05-23 15:53 ` Mark A. Greer
2007-05-23 15:54 ` Phil Terry
2007-05-23 14:21 ` Kumar Gala
2007-05-23 15:37 ` Phil Terry
2007-05-23 16:05 ` Segher Boessenkool [this message]
2007-05-23 16:20 ` Phil Terry
2007-05-23 16:20 ` Kumar Gala
2007-05-23 16:43 ` Phil Terry
2007-05-23 23:17 ` Segher Boessenkool
2007-05-23 23:05 ` Segher Boessenkool
2007-05-24 7:31 ` Porting RapidIO from ppc arch to powerpc arch in support ofMPC8641D Zhang Wei-r63237
2007-05-23 16:00 ` Porting RapidIO from ppc arch to powerpc arch in support of MPC8641D Segher Boessenkool
2007-05-23 16:13 ` Phil Terry
2007-05-24 0:52 ` David Gibson
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