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Message-ID: <4BAA3D5C.1000202@caviumnetworks.com>
Date:   Wed, 24 Mar 2010 09:27:08 -0700
From:   David Daney <ddaney@caviumnetworks.com>
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To:     Zhuang Yuyao <mlistz@gmail.com>
CC:     linux-mips@linux-mips.org
Subject: Re: [BUG?] cavium cn56xx and dma_map_single warning
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On 03/22/2010 06:45 PM, Zhuang Yuyao wrote:
> On Tue, Mar 23, 2010 at 9:39 AM, David Daney<ddaney@caviumnetworks.com>  wrote:
>
>> The issue is maintaining mappings for 32-bit PCI devices.  If you only want
>> to support 64-bit devices, it would be easier to address the issue.
>>
>> David Daney
>>
>
> Wow, that is a great news, I do not known if my adaptec 3045e raid
> card is a 64bit device, but if I only want to support 64bit devices,
> Is there a quick fix for it?
>

I don't know.  You could try to make all DMA accesses go via BAR2.  That 
would break many 32-bit devices though.

David Daney

> Zhuang Yuyao
>