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#
# DMA engine configuration
#
menuconfig DMADEVICES
bool "DMA Engine support"
depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX || PPC
depends on !HIGHMEM64G
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.
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 FSL_DMA_SELFTEST
bool "Enable the self test for each DMA channel"
depends on FSL_DMA
default y
---help---
Enable the self test for each DMA channel. A self test will be
performed after the channel probed to ensure the DMA works well.
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
help
This enables the use of DMA engines in the network stack to
offload receive copy-to-user operations, freeing CPU cycles.
Since this is the main user of the DMA engine, it should be enabled;
say Y here.
endif
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