#
menuconfig DMADEVICES
- bool "DMA Offload Engine support"
- depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
+ bool "DMA Engine support"
+ depends on HAS_DMA
help
- Intel(R) offload engines enable offloading memory copies in the
- network stack and RAID operations in the MD driver.
+ 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 ASYNC_TX_DISABLE_CHANNEL_SWITCH
+ bool
+
config INTEL_IOATDMA
tristate "Intel I/OAT DMA support"
depends on PCI && X86
select DMA_ENGINE
select DCA
+ select ASYNC_TX_DISABLE_CHANNEL_SWITCH
+ select ASYNC_TX_DISABLE_PQ_VAL_DMA
+ select ASYNC_TX_DISABLE_XOR_VAL_DMA
help
Enable support for the Intel(R) I/OAT DMA engine present
in recent Intel Xeon chipsets.
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 DW_DMAC
+ tristate "Synopsys DesignWare AHB DMA support"
+ depends on AVR32
+ select DMA_ENGINE
+ default y if CPU_AT32AP7000
+ help
+ Support the Synopsys DesignWare AHB DMA controller. This
+ can be integrated in chips such as the Atmel AT32ap7000.
+
+config AT_HDMAC
+ tristate "Atmel AHB DMA support"
+ depends on ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
+ select DMA_ENGINE
+ help
+ Support the Atmel AHB DMA controller. This can be integrated in
+ chips such as the Atmel AT91SAM9RL.
+
+config FSL_DMA
+ tristate "Freescale Elo and Elo Plus DMA support"
+ depends on FSL_SOC
+ select DMA_ENGINE
+ ---help---
+ Enable support for the Freescale Elo and Elo Plus DMA controllers.
+ The Elo is the DMA controller on some 82xx and 83xx parts, and the
+ Elo Plus is the DMA controller on 85xx and 86xx parts.
+
+config MV_XOR
+ bool "Marvell XOR engine support"
+ depends on PLAT_ORION
+ select DMA_ENGINE
+ ---help---
+ Enable support for the Marvell XOR engine.
+
+config MX3_IPU
+ bool "MX3x Image Processing Unit support"
+ depends on ARCH_MX3
+ select DMA_ENGINE
+ default y
+ help
+ If you plan to use the Image Processing unit in the i.MX3x, say
+ Y here. If unsure, select Y.
+
+config MX3_IPU_IRQS
+ int "Number of dynamically mapped interrupts for IPU"
+ depends on MX3_IPU
+ range 2 137
+ default 4
+ help
+ Out of 137 interrupt sources on i.MX31 IPU only very few are used.
+ To avoid bloating the irq_desc[] array we allocate a sufficient
+ number of IRQ slots and map them dynamically to specific sources.
+
+config TXX9_DMAC
+ tristate "Toshiba TXx9 SoC DMA support"
+ depends on MACH_TX49XX || MACH_TX39XX
+ select DMA_ENGINE
+ help
+ Support the TXx9 SoC internal DMA controller. This can be
+ integrated in chips such as the Toshiba TX4927/38/39.
+
+config SH_DMAE
+ tristate "Renesas SuperH DMAC support"
+ depends on SUPERH && SH_DMA
+ depends on !SH_DMA_API
+ select DMA_ENGINE
+ help
+ Enable support for the Renesas SuperH DMA controllers.
+
+config COH901318
+ bool "ST-Ericsson COH901318 DMA support"
+ select DMA_ENGINE
+ depends on ARCH_U300
+ help
+ Enable support for ST-Ericsson COH 901 318 DMA.
+
+config AMCC_PPC440SPE_ADMA
+ tristate "AMCC PPC440SPe ADMA support"
+ depends on 440SPe || 440SP
+ select DMA_ENGINE
+ select ARCH_HAS_ASYNC_TX_FIND_CHANNEL
+ help
+ Enable support for the AMCC PPC440SPe RAID engines.
+
+config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
+ bool
+
config DMA_ENGINE
bool
config NET_DMA
bool "Network: TCP receive copy offload"
depends on DMA_ENGINE && NET
- default y
+ 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.
- Since this is the main user of the DMA engine, it should be enabled;
- say Y here.
+
+ Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise
+ say N.
+
+config ASYNC_TX_DMA
+ bool "Async_tx: Offload support for the async_tx api"
+ depends on DMA_ENGINE
+ help
+ This allows the async_tx api to take advantage of offload engines for
+ memcpy, memset, xor, and raid6 p+q operations. If your platform has
+ a dma engine that can perform raid operations and you have enabled
+ MD_RAID456 say Y.
+
+ If unsure, say N.
+
+config DMATEST
+ tristate "DMA Test client"
+ depends on DMA_ENGINE
+ help
+ Simple DMA test client. Say N unless you're debugging a
+ DMA Device driver.
endif
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