tree 2f479b7ba4a4678826a85d78f4e90d1baa4f870f
parent a8438814d3b899e04e808e45585b40931517244f
author Siva Yerramreddy <yshivakrishna@gmail.com> 1405112661 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1405184262 -0700

dma: MIC X100 DMA Driver

This patch implements DMA Engine API for DMA controller on MIC X100
Coprocessors. DMA h/w is shared between host and card s/w.
Channels 0 to 3 are used by host and 4 to 7 are used by card.
Since the DMA device doesn't show up as PCIe device, a virtual bus called mic
bus is created and virtual devices are added on that bus to follow device model.
Allowed dma transfer directions are host to card, card to host and card to card.

Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Siva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>