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 ASYNC_TX_DISABLE_CHANNEL_SWITCH
  21         bool
  22
  23 config INTEL_IOATDMA
  24         tristate "Intel I/OAT DMA support"
  25         depends on PCI && X86
  26         select DMA_ENGINE
  27         select DCA
  28         select ASYNC_TX_DISABLE_CHANNEL_SWITCH
  29         select ASYNC_TX_DISABLE_PQ_VAL_DMA
  30         select ASYNC_TX_DISABLE_XOR_VAL_DMA
  31         help
  32           Enable support for the Intel(R) I/OAT DMA engine present
  33           in recent Intel Xeon chipsets.
  34
  35           Say Y here if you have such a chipset.
  36
  37           If unsure, say N.
  38
  39 config INTEL_IOP_ADMA
  40         tristate "Intel IOP ADMA support"
  41         depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
  42         select DMA_ENGINE
  43         help
  44           Enable support for the Intel(R) IOP Series RAID engines.
  45
  46 config DW_DMAC
  47         tristate "Synopsys DesignWare AHB DMA support"
  48         depends on AVR32
  49         select DMA_ENGINE
  50         default y if CPU_AT32AP7000
  51         help
  52           Support the Synopsys DesignWare AHB DMA controller.  This
  53           can be integrated in chips such as the Atmel AT32ap7000.
  54
  55 config AT_HDMAC
  56         tristate "Atmel AHB DMA support"
  57         depends on ARCH_AT91SAM9RL
  58         select DMA_ENGINE
  59         help
  60           Support the Atmel AHB DMA controller.  This can be integrated in
  61           chips such as the Atmel AT91SAM9RL.
  62
  63 config FSL_DMA
  64         tristate "Freescale Elo and Elo Plus DMA support"
  65         depends on FSL_SOC
  66         select DMA_ENGINE
  67         ---help---
  68           Enable support for the Freescale Elo and Elo Plus DMA controllers.
  69           The Elo is the DMA controller on some 82xx and 83xx parts, and the
  70           Elo Plus is the DMA controller on 85xx and 86xx parts.
  71
  72 config MV_XOR
  73         bool "Marvell XOR engine support"
  74         depends on PLAT_ORION
  75         select DMA_ENGINE
  76         ---help---
  77           Enable support for the Marvell XOR engine.
  78
  79 config MX3_IPU
  80         bool "MX3x Image Processing Unit support"
  81         depends on ARCH_MX3
  82         select DMA_ENGINE
  83         default y
  84         help
  85           If you plan to use the Image Processing unit in the i.MX3x, say
  86           Y here. If unsure, select Y.
  87
  88 config MX3_IPU_IRQS
  89         int "Number of dynamically mapped interrupts for IPU"
  90         depends on MX3_IPU
  91         range 2 137
  92         default 4
  93         help
  94           Out of 137 interrupt sources on i.MX31 IPU only very few are used.
  95           To avoid bloating the irq_desc[] array we allocate a sufficient
  96           number of IRQ slots and map them dynamically to specific sources.
  97
  98 config TXX9_DMAC
  99         tristate "Toshiba TXx9 SoC DMA support"
 100         depends on MACH_TX49XX || MACH_TX39XX
 101         select DMA_ENGINE
 102         help
 103           Support the TXx9 SoC internal DMA controller.  This can be
 104           integrated in chips such as the Toshiba TX4927/38/39.
 105
 106 config SH_DMAE
 107         tristate "Renesas SuperH DMAC support"
 108         depends on SUPERH && SH_DMA
 109         depends on !SH_DMA_API
 110         select DMA_ENGINE
 111         help
 112           Enable support for the Renesas SuperH DMA controllers.
 113
 114 config DMA_ENGINE
 115         bool
 116
 117 comment "DMA Clients"
 118         depends on DMA_ENGINE
 119
 120 config NET_DMA
 121         bool "Network: TCP receive copy offload"
 122         depends on DMA_ENGINE && NET
 123         default (INTEL_IOATDMA || FSL_DMA)
 124         help
 125           This enables the use of DMA engines in the network stack to
 126           offload receive copy-to-user operations, freeing CPU cycles.
 127
 128           Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise
 129           say N.
 130
 131 config ASYNC_TX_DMA
 132         bool "Async_tx: Offload support for the async_tx api"
 133         depends on DMA_ENGINE
 134         help
 135           This allows the async_tx api to take advantage of offload engines for
 136           memcpy, memset, xor, and raid6 p+q operations.  If your platform has
 137           a dma engine that can perform raid operations and you have enabled
 138           MD_RAID456 say Y.
 139
 140           If unsure, say N.
 141
 142 config DMATEST
 143         tristate "DMA Test client"
 144         depends on DMA_ENGINE
 145         help
 146           Simple DMA test client. Say N unless you're debugging a
 147           DMA Device driver.
 148
 149 endif