From: Dan Williams <dan.j.williams@intel.com>
To: Ira Snyder <iws@ovro.caltech.edu>
Cc: "linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>,
Li Yang <leoli@freescale.com>
Subject: Re: [PATCH v3 2/2] fsldma: Add DMA_SLAVE support
Date: Mon, 22 Jun 2009 14:20:47 -0700 [thread overview]
Message-ID: <1245705647.937.2.camel@dwillia2-linux.ch.intel.com> (raw)
In-Reply-To: <20090619193134.GC30992@ovro.caltech.edu>
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
Dan Williams (1):
dmaengine: move HIGHMEM64G restriction to ASYNC_TX_DMA
Ira Snyder (4):
fsldma: enable external start for the 83xx controller
fsldma: do not clear bandwidth control bits on the 83xx controller
fsldma: split apart external pause and request count features
fsldma: Add DMA_SLAVE support
Ira W. Snyder (1):
fsldma: use PCI Read Multiple command
arch/powerpc/include/asm/fsldma.h | 136 +++++++++++++++++
drivers/dma/Kconfig | 4 +-
drivers/dma/fsldma.c | 287 ++++++++++++++++++++++++++++++++++---
drivers/dma/fsldma.h | 4 +-
4 files changed, 408 insertions(+), 23 deletions(-)
create mode 100644 arch/powerpc/include/asm/fsldma.h
next prev parent reply other threads:[~2009-06-22 21:20 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 [this message]
2009-06-22 21:22 ` Dan Williams
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1245705647.937.2.camel@dwillia2-linux.ch.intel.com \
--to=dan.j.williams@intel.com \
--cc=iws@ovro.caltech.edu \
--cc=leoli@freescale.com \
--cc=linuxppc-dev@ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).