From: Dan Williams <dan.j.williams@intel.com>
To: Ira Snyder <iws@ovro.caltech.edu>, Li Yang <leoli@freescale.com>,
Kumar Gala <galak@kernel.crashing.org>
Cc: "linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>
Subject: Re: [PATCH v3 2/2] fsldma: Add DMA_SLAVE support
Date: Mon, 22 Jun 2009 14:22:45 -0700 [thread overview]
Message-ID: <1245705765.937.4.camel@dwillia2-linux.ch.intel.com> (raw)
In-Reply-To: <1245705647.937.2.camel@dwillia2-linux.ch.intel.com>
On Mon, 2009-06-22 at 14:20 -0700, Dan Williams wrote:
> On Fri, 2009-06-19 at 12:31 -0700, Ira Snyder wrote:
> > Use the DMA_SLAVE capability of the DMAEngine API to copy/from a
> > scatterlist into an arbitrary list of hardware address/length pairs.
> >
> > This allows a single DMA transaction to copy data from several different
> > devices into a scatterlist at the same time.
> >
> > This also adds support to enable some controller-specific features such as
> > external start and external pause for a DMA transaction.
> >
> > Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
> > ---
> >
> > This patch depends on the "fsldma: split apart external pause and
> > request count features" patch.
> >
> > After discussion with Dan Williams, this is the third version of the
> > DMA_SLAVE API for the Freescale DMA controller. I've tested it heavily
> > with both drivers I have written against this API, an FPGA programmer
> > and an FPGA data grabber.
> >
> > Kumar, Dan asked me to add you to the CC list, so you can have a look at
> > this patch before he adds it to his tree.
> >
> > The other two small patches I posted earlier are very helpful in testing
> > this functionality. They make the fsldma driver leave the BWC (bandwidth
> > control) bits alone on the 83xx controller, as well as making the
> > external start feature available on 83xx.
> >
>
> Kumar, Leo,
>
> Can I get your acked-by's for the current state of async_tx.git/next? I
> just pushed out Ira's latest so it may take a moment to mirror out.
>
> Thanks,
> Dan
>
> The following changes since commit f234012f52a37e48f2330e1ca2df69800e797c3b:
> Linus Torvalds (1):
> Merge branch 'for-linus' of git://git.kernel.org/.../drzeus/mmc
>
> are available in the git repository at:
>
> ssh://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx.git next
That should be:
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx.git next
next prev parent reply other threads:[~2009-06-22 21:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-19 19:31 [PATCH v3 2/2] fsldma: Add DMA_SLAVE support Ira Snyder
2009-06-22 21:20 ` Dan Williams
2009-06-22 21:22 ` Dan Williams [this message]
2009-06-23 10:18 ` Li Yang
2009-06-23 12:56 ` Kumar Gala
2009-06-23 15:56 ` Dan Williams
2009-06-24 17:56 ` Dan Williams
2009-06-24 19:13 ` Kumar Gala
2009-06-24 21:08 ` Dan Williams
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