[PATCH 01/12] dmaengine: add base support for the async_tx api

From: Dan Williams [EMAIL PROTECTED] * introduce struct dma_async_tx_descriptor as a common field for all dmaengine software descriptors * convert the device_memcpy_* methods into separate prep, set src/dest, and submit stages * support capabilities beyond memcpy (xor, memset, xor zero sum,

[PATCH 01/12] dmaengine: add base support for the async_tx api

From: Dan Williams [EMAIL PROTECTED] * introduce struct dma_async_tx_descriptor as a common field for all dmaengine software descriptors * convert the device_memcpy_* methods into separate prep, set src/dest, and submit stages * support capabilities beyond memcpy (xor, memset, xor zero sum,