From: Siva Yerramreddy Date: Fri, 11 Jul 2014 21:04:21 +0000 (-0700) Subject: dma: MIC X100 DMA Driver X-Git-Tag: cleanup-for-v3.18~127^2~19 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=95b4ecbf759ae8ecf40462ed5e6a08023166a05c;p=pandora-kernel.git 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 Reviewed-by: Nikhil Rao Reviewed-by: Sudeep Dutt Signed-off-by: Siva Yerramreddy Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 1eca7b9760e6..7c8b8c41f4f4 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -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 + . + config INTEL_MID_DMAC tristate "Intel MID DMA support for Peripheral DMA controllers" depends on PCI && X86 diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile index c779e1eb2db2..bd9e7fa928bd 100644 --- a/drivers/dma/Makefile +++ b/drivers/dma/Makefile @@ -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 Reading git-diff-tree failed