From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Nelson <eric.nelson@boundarydevices.com>
Date: Mon, 05 Mar 2012 06:43:54 -0700
Subject: [U-Boot] [PATCH 2/4] net: fec_mxc: allow use with cache enabled
In-Reply-To: <201203050249.33765.marex@denx.de>
References: <1330729572-12642-1-git-send-email-eric.nelson@boundarydevices.com>
	<201203030039.55661.marex@denx.de>
	<4F53F737.4040509@boundarydevices.com>
	<201203050249.33765.marex@denx.de>
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On 03/04/2012 06:49 PM, Marek Vasut wrote:
>> On 03/02/2012 04:39 PM, Marek Vasut wrote:
>>>> +			 * Invalidate data cache over the buffer
>>>> +			 */
>>>> +			addr = (uint32_t)frame;
>>>> +			size = roundup(frame_length, CONFIG_FEC_DATA_ALIGNMENT);
>>>> +			invalidate_dcache_range(addr, addr + size);
>>>
>>> DTTO here, frame length might not be aligned properly, or will it be?
>>> Network stack must be properly analyzed here.
>>
>> The hardware won't return an unaligned value here, so this should be good.
>
> Are you sure? You can't receive frame aligned to 8 bytes boundary?

Unless I'm missing something, received packet start addresses are defined
by the driver in fec_rbd_init(), the code just modified to use memalign,
so we're good here.