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Commit 95b4ecbf authored by Siva Yerramreddy's avatar Siva Yerramreddy Committed by Greg Kroah-Hartman
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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: default avatarAshutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: default avatarNikhil Rao <nikhil.rao@intel.com>
Reviewed-by: default avatarSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: default avatarSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a8438814

drivers/dma/Kconfig

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Original line number Diff line number Diff line
@@ -33,6 +33,25 @@ if DMADEVICES 


comment "DMA Devices"



config INTEL_MIC_X100_DMA

	tristate "Intel MIC X100 DMA Driver"

	depends on 64BIT && X86 && INTEL_MIC_BUS

	select DMAENGINE

	default N

	help

	  This enables DMA support for the Intel Many Integrated Core

	  (MIC) family of PCIe form factor coprocessor X100 devices that

	  run a 64 bit Linux OS. This driver will be used by both MIC

	  host and card drivers.



	  If you are building host kernel with a MIC device or a card

	  kernel for a MIC device, then say M (recommended) or Y, else

	  say N. If unsure say N.



	  More information about the Intel MIC family as well as the Linux

	  OS and tools for MIC to use with this driver are available from

	  <http://software.intel.com/en-us/mic-developer>.



config INTEL_MID_DMAC

	tristate "Intel MID DMA support for Peripheral DMA controllers"

	depends on PCI && X86

drivers/dma/Makefile

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Original line number Diff line number Diff line
@@ -47,3 +47,4 @@ obj-$(CONFIG_MOXART_DMA) += moxart-dma.o 
obj-$(CONFIG_FSL_EDMA) += fsl-edma.o

obj-$(CONFIG_QCOM_BAM_DMA) += qcom_bam_dma.o

obj-y += xilinx/

obj-$(CONFIG_INTEL_MIC_X100_DMA) += mic_x100_dma.o

drivers/dma/mic_x100_dma.c

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drivers/dma/mic_x100_dma.h

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