drivers/dma/Kconfig

   1 #
   2 # DMA engine configuration
   3 #
   4
   5 menuconfig DMADEVICES
   6         bool "DMA Engine support"
   7         depends on 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
  16 if DMADEVICES
  17
  18 comment "DMA Devices"
  19
  20 config 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
  33 config INTEL_IOP_ADMA
  34         tristate "Intel IOP ADMA support"
  35         depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
  36         select DMA_ENGINE
  37         help
  38           Enable support for the Intel(R) IOP Series RAID engines.
  39
  40 config DW_DMAC
  41         tristate "Synopsys DesignWare AHB DMA support"
  42         depends on AVR32
  43         select DMA_ENGINE
  44         default y if CPU_AT32AP7000
  45         help
  46           Support the Synopsys DesignWare AHB DMA controller.  This
  47           can be integrated in chips such as the Atmel AT32ap7000.
  48
  49 config AT_HDMAC
  50         tristate "Atmel AHB DMA support"
  51         depends on ARCH_AT91SAM9RL
  52         select DMA_ENGINE
  53         help
  54           Support the Atmel AHB DMA controller.  This can be integrated in
  55           chips such as the Atmel AT91SAM9RL.
  56
  57 config FSL_DMA
  58         tristate "Freescale Elo and Elo Plus DMA support"
  59         depends on FSL_SOC
  60         select DMA_ENGINE
  61         ---help---
  62           Enable support for the Freescale Elo and Elo Plus DMA controllers.
  63           The Elo is the DMA controller on some 82xx and 83xx parts, and the
  64           Elo Plus is the DMA controller on 85xx and 86xx parts.
  65
  66 config MV_XOR
  67         bool "Marvell XOR engine support"
  68         depends on PLAT_ORION
  69         select DMA_ENGINE
  70         ---help---
  71           Enable support for the Marvell XOR engine.
  72
  73 config MX3_IPU
  74         bool "MX3x Image Processing Unit support"
  75         depends on ARCH_MX3
  76         select DMA_ENGINE
  77         default y
  78         help
  79           If you plan to use the Image Processing unit in the i.MX3x, say
  80           Y here. If unsure, select Y.
  81
  82 config MX3_IPU_IRQS
  83         int "Number of dynamically mapped interrupts for IPU"
  84         depends on MX3_IPU
  85         range 2 137
  86         default 4
  87         help
  88           Out of 137 interrupt sources on i.MX31 IPU only very few are used.
  89           To avoid bloating the irq_desc[] array we allocate a sufficient
  90           number of IRQ slots and map them dynamically to specific sources.
  91
  92 config TXX9_DMAC
  93         tristate "Toshiba TXx9 SoC DMA support"
  94         depends on MACH_TX49XX || MACH_TX39XX
  95         select DMA_ENGINE
  96         help
  97           Support the TXx9 SoC internal DMA controller.  This can be
  98           integrated in chips such as the Toshiba TX4927/38/39.
  99
 100 config DMA_ENGINE
 101         bool
 102
 103 comment "DMA Clients"
 104         depends on DMA_ENGINE
 105
 106 config NET_DMA
 107         bool "Network: TCP receive copy offload"
 108         depends on DMA_ENGINE && NET
 109         default (INTEL_IOATDMA || FSL_DMA)
 110         help
 111           This enables the use of DMA engines in the network stack to
 112           offload receive copy-to-user operations, freeing CPU cycles.
 113
 114           Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise
 115           say N.
 116
 117 config ASYNC_TX_DMA
 118         bool "Async_tx: Offload support for the async_tx api"
 119         depends on DMA_ENGINE && !HIGHMEM64G
 120         help
 121           This allows the async_tx api to take advantage of offload engines for
 122           memcpy, memset, xor, and raid6 p+q operations.  If your platform has
 123           a dma engine that can perform raid operations and you have enabled
 124           MD_RAID456 say Y.
 125
 126           If unsure, say N.
 127
 128 config DMATEST
 129         tristate "DMA Test client"
 130         depends on DMA_ENGINE
 131         help
 132           Simple DMA test client. Say N unless you're debugging a
 133           DMA Device driver.
 134
 135 endif