diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2008-02-02 19:49:58 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2008-02-06 10:12:18 -0700 |
| commit | d4c56f97ff21df405d0cebe11f49e3c3c79662b5 (patch) | |
| tree | e6b0de433d7c985982ac12815998242a786d87b2 /include/linux | |
| parent | 0036731c88fdb5bf4f04a796a30b5e445fc57f54 (diff) | |
async_tx: replace 'int_en' with operation preparation flags
Pass a full set of flags to drivers' per-operation 'prep' routines.
Currently the only flag passed is DMA_PREP_INTERRUPT. The expectation is
that arch-specific async_tx_find_channel() implementations can exploit this
capability to find the best channel for an operation.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Reviewed-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/dmaengine.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index b0864f5b729..acbb364674f 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -95,6 +95,15 @@ enum dma_transaction_type { #define DMA_TX_TYPE_END (DMA_INTERRUPT + 1) /** + * enum dma_prep_flags - DMA flags to augment operation preparation + * @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of + * this transaction + */ +enum dma_prep_flags { + DMA_PREP_INTERRUPT = (1 << 0), +}; + +/** * dma_cap_mask_t - capabilities bitmap modeled after cpumask_t. * See linux/cpumask.h */ @@ -274,16 +283,16 @@ struct dma_device { struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)( struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, - size_t len, int int_en); + size_t len, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_xor)( struct dma_chan *chan, dma_addr_t dest, dma_addr_t *src, - unsigned int src_cnt, size_t len, int int_en); + unsigned int src_cnt, size_t len, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_zero_sum)( struct dma_chan *chan, dma_addr_t *src, unsigned int src_cnt, - size_t len, u32 *result, int int_en); + size_t len, u32 *result, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_memset)( struct dma_chan *chan, dma_addr_t dest, int value, size_t len, - int int_en); + unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_interrupt)( struct dma_chan *chan); |