lkml.org 
[lkml]   [2007]   [Jul]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 3/4] Extend the DMA-engine API.
On Tue, 10 Jul 2007 17:45:11 +0800 Zhang Wei wrote:

> Add channel wait queue and transfer callback dma_xfer_callback().
> If the DMA controller and driver support interrupt, when the
> transfer is finished, it will wakeup the wait queue
> and call the callback function of the channel.
>
> Add dma_async_raw_xfer() to API and device_raw_xfer() to struct dma_device
> for RAW physical address DMA transfer, which will be used at transfer
> between I/O address and memory address.
>
> Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
> ---
> include/linux/dmaengine.h | 35 +++++++++++++++++++++++++++++++++++
> 1 files changed, 35 insertions(+), 0 deletions(-)

> /**
> + * dma_async_raw_xfer - transfor data between physical addresses with callback

transfer

> + * @chan: DMA channel to be used
> + * @dest: destination address (physical)
> + * @src: source address (physical)
> + * @len: length
> + */
> +static inline dma_cookie_t dma_async_raw_xfer(struct dma_chan *chan,
> + dma_addr_t dest, dma_addr_t src, size_t len,
> + dma_xfer_callback cb, void *data)
> +{


---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-07-10 17:45    [W:0.201 / U:0.240 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site