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Re: BCM91x80A/B PCI DMA problems

To: Mark E Mason <mark.e.mason@broadcom.com>
Subject: Re: BCM91x80A/B PCI DMA problems
From: Martin Michlmayr <tbm@cyrius.com>
Date: Tue, 14 Mar 2006 16:38:22 +0000
Cc: linux-mips@linux-mips.org
In-reply-to: <7E000E7F06B05C49BDBB769ADAF44D0786817B@NT-SJCA-0750.brcm.ad.broadcom.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <7E000E7F06B05C49BDBB769ADAF44D0786817B@NT-SJCA-0750.brcm.ad.broadcom.com>
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* Mark E Mason <mark.e.mason@broadcom.com> [2006-03-14 08:21]:
> There's a lot of PCI HW out there that's 32-bit only, but there's
> also a fair bit that isn't.  A 32-bit device in a 64-bit system is
> going to require bounce buffering by the driver/OS.

If I understand you correctly, you're saying that you currently don't
supporting 32 bit PCI cards on the SB1 platform.  Is this something
you care about, or should I get a 64-bit PCI card instead?  How hard
would it be to implement bounce buffering anyway?
-- 
Martin Michlmayr
http://www.cyrius.com/

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