From: David Daney <ddaney@caviumnetworks.com>
To: Zhuang Yuyao <mlistz@gmail.com>
Cc: linux-mips@linux-mips.org
Subject: Re: [BUG?] cavium cn56xx and dma_map_single warning
Date: Wed, 24 Mar 2010 09:27:08 -0700 [thread overview]
Message-ID: <4BAA3D5C.1000202@caviumnetworks.com> (raw)
In-Reply-To: <e732b6801003221845i4f86ff8ftea56d656bfd20f10@mail.gmail.com>
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
>
prev parent reply other threads:[~2010-03-24 16:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-22 7:01 [BUG?] cavium cn56xx and dma_map_single warning Zhuang Yuyao
2010-03-22 9:31 ` Zhuang Yuyao
2010-03-22 16:44 ` David Daney
2010-03-23 1:30 ` Zhuang Yuyao
2010-03-23 1:39 ` David Daney
2010-03-23 1:45 ` Zhuang Yuyao
2010-03-24 16:27 ` David Daney [this message]
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