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authorAlexandre Bounine <alexandre.bounine@idt.com>2014-08-09 01:22:09 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-09 02:57:24 +0400
commit4aff1ce7add1c432fe5ea3ae0231155f33e5ef38 (patch)
treec2a9300e8ebe844887adaded00ee4b3078e94d4b /include
parent93b7aca35dd7bf0c3ba7ea0542b556bcfdb28e76 (diff)
downloadlinux-4aff1ce7add1c432fe5ea3ae0231155f33e5ef38.tar.xz
rapidio: add new RapidIO DMA interface routines
Add RapidIO DMA interface routines that directly use reference to the mport device object and/or target device destination ID as parameters. This allows to perform RapidIO DMA transfer requests by modules that do not have an access to the RapidIO device list. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Stef van Os <stef.van.os@prodrive-technologies.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/rio_drv.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h
index 5059994fe297..9fc2f213e74f 100644
--- a/include/linux/rio_drv.h
+++ b/include/linux/rio_drv.h
@@ -384,11 +384,16 @@ void rio_dev_put(struct rio_dev *);
#ifdef CONFIG_RAPIDIO_DMA_ENGINE
extern struct dma_chan *rio_request_dma(struct rio_dev *rdev);
+extern struct dma_chan *rio_request_mport_dma(struct rio_mport *mport);
extern void rio_release_dma(struct dma_chan *dchan);
extern struct dma_async_tx_descriptor *rio_dma_prep_slave_sg(
struct rio_dev *rdev, struct dma_chan *dchan,
struct rio_dma_data *data,
enum dma_transfer_direction direction, unsigned long flags);
+extern struct dma_async_tx_descriptor *rio_dma_prep_xfer(
+ struct dma_chan *dchan, u16 destid,
+ struct rio_dma_data *data,
+ enum dma_transfer_direction direction, unsigned long flags);
#endif
/**