* DMA implementation on MPC8572
@ 2011-01-06 14:24 deebul nair
2011-01-06 20:52 ` Ira W. Snyder
0 siblings, 1 reply; 2+ messages in thread
From: deebul nair @ 2011-01-06 14:24 UTC (permalink / raw)
To: linuxppc-dev
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Hi all
I am using the MPC8572 processor.
I wanted to use the DMA functionality in the powerpc board for talking to a
FPGA device connected on the loacl bus.
I have compiled the fsldma.c code and inserted it.
On insertion the driver probes all the dma channels
Can anyone tell me how to test the driver and also how to use the driver?
--
Cheeers
Deebul !!!!!!
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: DMA implementation on MPC8572
2011-01-06 14:24 DMA implementation on MPC8572 deebul nair
@ 2011-01-06 20:52 ` Ira W. Snyder
0 siblings, 0 replies; 2+ messages in thread
From: Ira W. Snyder @ 2011-01-06 20:52 UTC (permalink / raw)
To: deebul nair; +Cc: linuxppc-dev
On Thu, Jan 06, 2011 at 07:54:16PM +0530, deebul nair wrote:
> Hi all
>
> I am using the MPC8572 processor.
> I wanted to use the DMA functionality in the powerpc board for talking to a
> FPGA device connected on the loacl bus.
>
> I have compiled the fsldma.c code and inserted it.
> On insertion the driver probes all the dma channels
> Can anyone tell me how to test the driver and also how to use the driver?
>
For memcpy tests, the dmatest module provides a good example. See
drivers/dma/dmatest.c for the source.
For more advanced usage, search the archives for:
[PATCH RFCv3 0/2] CARMA Board Support
Those drivers use some of the advanced features of the DMAEngine API to
transfer data from an FPGA into RAM.
Ira
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