Ira Snyder wrote:
So, I see a couple of ways of moving forward:
1) Keep my implementation, moving the includes to arch/powerpc/include.
Do we drop the allocation functions?
+1 for option 1. Having it under arch/powerpc/include makes it clear
that it is a powerpc specific api, so keep the a
On Thu, Jun 18, 2009 at 11:16:03AM -0700, Dan Williams wrote:
> Ira Snyder wrote:
>> I can do something similar by calling device_prep_dma_memcpy() lots of
>> times. Once for each page in the scatterlist.
>>
>> This has the advantage of not changing the DMAEngine API.
>>
>> This has the disadvantag
Ira Snyder wrote:
I can do something similar by calling device_prep_dma_memcpy() lots of
times. Once for each page in the scatterlist.
This has the advantage of not changing the DMAEngine API.
This has the disadvantage of not being a single transaction. The DMA
controller will get an interrupt
On Wed, Jun 17, 2009 at 10:17:54AM -0700, Dan Williams wrote:
> Ira Snyder wrote:
>>> Using EXPORT_SYMBOL would defeat the purpose of conforming to the
>>> dmaengine api which should allow other subsystems to generically
>>> discover an fsldma resource.
>>>
>>
>> Any driver would still use dma_requ
Ira Snyder wrote:
Using EXPORT_SYMBOL would defeat the purpose of conforming to the
dmaengine api which should allow other subsystems to generically
discover an fsldma resource.
Any driver would still use dma_request_channel(), etc. to get access to
a DMA channel. AFAICT, DMA_SLAVE is intended
On Tue, Jun 16, 2009 at 12:01:40PM -0700, Dan Williams wrote:
> Hi Ira,
>
> 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 seve
Hi Ira,
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 s
On Thu, Jun 04, 2009 at 07:20:26PM +0800, Li Yang-R58472 wrote:
>
> >> This is a request for comments on this patch. I hunch it is
> >not quite
> >> ready for inclusion, though it is certainly ready for
> >review. Correct
> >> functioning of this patch depends on the patches submitted earlier.
>> This is a request for comments on this patch. I hunch it is
>not quite
>> ready for inclusion, though it is certainly ready for
>review. Correct
>> functioning of this patch depends on the patches submitted earlier.
>>
>> As suggested by Dan Williams, I implemented DMA_SLAVE
>support for
On Fri, May 15, 2009 at 03:56:59PM -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 scatte
10 matches
Mail list logo
