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- #
- # DMA engine configuration
- #
- menuconfig DMADEVICES
- bool "DMA Engine support"
- depends on !HIGHMEM64G && HAS_DMA
- help
- DMA engines can do asynchronous data transfers without
- involving the host CPU. Currently, this framework can be
- used to offload memory copies in the network stack and
- RAID operations in the MD driver. This menu only presents
- DMA Device drivers supported by the configured arch, it may
- be empty in some cases.
- if DMADEVICES
- comment "DMA Devices"
- config INTEL_IOATDMA
- tristate "Intel I/OAT DMA support"
- depends on PCI && X86
- select DMA_ENGINE
- select DCA
- help
- Enable support for the Intel(R) I/OAT DMA engine present
- in recent Intel Xeon chipsets.
- Say Y here if you have such a chipset.
- If unsure, say N.
- config INTEL_IOP_ADMA
- tristate "Intel IOP ADMA support"
- depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
- select ASYNC_CORE
- select DMA_ENGINE
- help
- Enable support for the Intel(R) IOP Series RAID engines.
- config FSL_DMA
- bool "Freescale MPC85xx/MPC83xx DMA support"
- depends on PPC
- select DMA_ENGINE
- ---help---
- Enable support for the Freescale DMA engine. Now, it support
- MPC8560/40, MPC8555, MPC8548 and MPC8641 processors.
- The MPC8349, MPC8360 is also supported.
- config DMA_ENGINE
- bool
- comment "DMA Clients"
- depends on DMA_ENGINE
- config NET_DMA
- bool "Network: TCP receive copy offload"
- depends on DMA_ENGINE && NET
- default (INTEL_IOATDMA || FSL_DMA)
- help
- This enables the use of DMA engines in the network stack to
- offload receive copy-to-user operations, freeing CPU cycles.
- Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise
- say N.
- endif
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