[U-Boot] [PATCH 2/4] net: fec_mxc: allow use with cache enabled
Marek Vasut
marex at denx.de
Mon Mar 5 18:59:21 CET 2012
Dear Eric Nelson,
> On 03/05/2012 08:39 AM, Marek Vasut wrote:
> > Dear Eric Nelson,
> >
> >> 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.
> >
> > Ok, that's good then. I'll skim through this driver one more time tonight
> > and see what comes out from it.
>
> Thanks.
>
> I just sent V2.
I can't seem to find it, did you really send it?
Best regards,
Marek Vasut
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