# # DMA engine configuration # menuconfig DMADEVICES bool "DMA Engine support" depends on 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. config DMADEVICES_DEBUG bool "DMA Engine debugging" depends on DMADEVICES != n help This is an option for use by developers; most people should say N here. This enables DMA engine core and driver debugging. config DMADEVICES_VDEBUG bool "DMA Engine verbose debugging" depends on DMADEVICES_DEBUG != n help This is an option for use by developers; most people should say N here. This enables deeper (more verbose) debugging of the DMA engine core and drivers. if DMADEVICES comment "DMA Devices" config INTEL_MID_DMAC tristate "Intel MID DMA support for Peripheral DMA controllers" depends on PCI && X86 select DMA_ENGINE default n help Enable support for the Intel(R) MID DMA engine present in Intel MID chipsets. Say Y here if you have such a chipset. If unsure, say N. config ASYNC_TX_DISABLE_CHANNEL_SWITCH bool config AMBA_PL08X bool "ARM PrimeCell PL080 or PL081 support" depends on ARM_AMBA && EXPERIMENTAL select DMA_ENGINE help Platform has a PL08x DMAC device which can provide DMA engine support 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. 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 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 MPC512X_DMA tristate "Freescale MPC512x built-in DMA engine support" depends on PPC_MPC512x select DMA_ENGINE ---help--- Enable support for the Freescale MPC512x built-in DMA engine. 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) || (ARM && ARCH_SHMOBILE) 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 STE_DMA40 bool "ST-Ericsson DMA40 support" depends on ARCH_U8500 select DMA_ENGINE help Support for ST-Ericsson DMA40 controller 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 TIMB_DMA tristate "Timberdale FPGA DMA support" depends on MFD_TIMBERDALE || HAS_IOMEM select DMA_ENGINE help Enable support for the Timberdale FPGA DMA engine. config ARCH_HAS_ASYNC_TX_FIND_CHANNEL bool config PL330_DMA tristate "DMA API Driver for PL330" select DMA_ENGINE depends on PL330 help Select if your platform has one or more PL330 DMACs. You need to provide platform specific settings via platform_data for a dma-pl330 device. config PCH_DMA tristate "Topcliff PCH DMA support" depends on PCI && X86 select DMA_ENGINE help Enable support for the Topcliff PCH DMA engine. 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. 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