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 <redacted>
---

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