LXR linux/drivers/dma/Kconfig

   1#
   2# DMA engine configuration
   3#
   4
   5menuconfig DMADEVICES
   6        bool "DMA Engine support"
   7        depends on !HIGHMEM64G && HAS_DMA
   8        help
   9          DMA engines can do asynchronous data transfers without
  10          involving the host CPU.  Currently, this framework can be
  11          used to offload memory copies in the network stack and
  12          RAID operations in the MD driver.  This menu only presents
  13          DMA Device drivers supported by the configured arch, it may
  14          be empty in some cases.
  15
  16if DMADEVICES
  17
  18comment "DMA Devices"
  19
  20config INTEL_IOATDMA
  21        tristate "Intel I/OAT DMA support"
  22        depends on PCI && X86
  23        select DMA_ENGINE
  24        select DCA
  25        help
  26          Enable support for the Intel(R) I/OAT DMA engine present
  27          in recent Intel Xeon chipsets.
  28
  29          Say Y here if you have such a chipset.
  30
  31          If unsure, say N.
  32
  33config INTEL_IOP_ADMA
  34        tristate "Intel IOP ADMA support"
  35        depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
  36        select ASYNC_CORE
  37        select DMA_ENGINE
  38        help
  39          Enable support for the Intel(R) IOP Series RAID engines.
  40
  41config DW_DMAC
  42        tristate "Synopsys DesignWare AHB DMA support"
  43        depends on AVR32
  44        select DMA_ENGINE
  45        default y if CPU_AT32AP7000
  46        help
  47          Support the Synopsys DesignWare AHB DMA controller.  This
  48          can be integrated in chips such as the Atmel AT32ap7000.
  49
  50config FSL_DMA
  51        tristate "Freescale Elo and Elo Plus DMA support"
  52        depends on FSL_SOC
  53        select DMA_ENGINE
  54        ---help---
  55          Enable support for the Freescale Elo and Elo Plus DMA controllers.
  56          The Elo is the DMA controller on some 82xx and 83xx parts, and the
  57          Elo Plus is the DMA controller on 85xx and 86xx parts.
  58
  59config MV_XOR
  60        bool "Marvell XOR engine support"
  61        depends on PLAT_ORION
  62        select ASYNC_CORE
  63        select DMA_ENGINE
  64        ---help---
  65          Enable support for the Marvell XOR engine.
  66
  67config DMA_ENGINE
  68        bool
  69
  70comment "DMA Clients"
  71        depends on DMA_ENGINE
  72
  73config NET_DMA
  74        bool "Network: TCP receive copy offload"
  75        depends on DMA_ENGINE && NET
  76        default (INTEL_IOATDMA || FSL_DMA)
  77        help
  78          This enables the use of DMA engines in the network stack to
  79          offload receive copy-to-user operations, freeing CPU cycles.
  80
  81          Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise
  82          say N.
  83
  84config DMATEST
  85        tristate "DMA Test client"
  86        depends on DMA_ENGINE
  87        help
  88          Simple DMA test client. Say N unless you're debugging a
  89          DMA Device driver.
  90
  91endif
  92