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 <i...@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
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