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0c42bd0e42
Topcliff PCH is the platform controller hub that is going to
be used in Intel's upcoming general embedded platforms. This
adds the driver for Topcliff PCH DMA controller. The DMA
channels are strictly for device to host or host to device
transfers and cannot be used for generic memcpy.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
[kill GFP_ATOMIC, kill __raw_{read|write}l, locking fixlet]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
234 lines
6.0 KiB
Plaintext
234 lines
6.0 KiB
Plaintext
#
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# DMA engine configuration
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#
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menuconfig DMADEVICES
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bool "DMA Engine support"
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depends on HAS_DMA
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help
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DMA engines can do asynchronous data transfers without
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involving the host CPU. Currently, this framework can be
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used to offload memory copies in the network stack and
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RAID operations in the MD driver. This menu only presents
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DMA Device drivers supported by the configured arch, it may
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be empty in some cases.
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config DMADEVICES_DEBUG
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bool "DMA Engine debugging"
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depends on DMADEVICES != n
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help
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This is an option for use by developers; most people should
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say N here. This enables DMA engine core and driver debugging.
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config DMADEVICES_VDEBUG
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bool "DMA Engine verbose debugging"
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depends on DMADEVICES_DEBUG != n
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help
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This is an option for use by developers; most people should
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say N here. This enables deeper (more verbose) debugging of
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the DMA engine core and drivers.
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if DMADEVICES
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comment "DMA Devices"
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config INTEL_MID_DMAC
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tristate "Intel MID DMA support for Peripheral DMA controllers"
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depends on PCI && X86
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select DMA_ENGINE
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default n
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help
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Enable support for the Intel(R) MID DMA engine present
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in Intel MID chipsets.
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Say Y here if you have such a chipset.
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If unsure, say N.
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config ASYNC_TX_DISABLE_CHANNEL_SWITCH
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bool
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config INTEL_IOATDMA
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tristate "Intel I/OAT DMA support"
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depends on PCI && X86
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select DMA_ENGINE
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select DCA
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select ASYNC_TX_DISABLE_CHANNEL_SWITCH
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select ASYNC_TX_DISABLE_PQ_VAL_DMA
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select ASYNC_TX_DISABLE_XOR_VAL_DMA
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help
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Enable support for the Intel(R) I/OAT DMA engine present
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in recent Intel Xeon chipsets.
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Say Y here if you have such a chipset.
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If unsure, say N.
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config INTEL_IOP_ADMA
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tristate "Intel IOP ADMA support"
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depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
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select DMA_ENGINE
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help
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Enable support for the Intel(R) IOP Series RAID engines.
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config DW_DMAC
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tristate "Synopsys DesignWare AHB DMA support"
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depends on AVR32
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select DMA_ENGINE
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default y if CPU_AT32AP7000
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help
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Support the Synopsys DesignWare AHB DMA controller. This
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can be integrated in chips such as the Atmel AT32ap7000.
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config AT_HDMAC
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tristate "Atmel AHB DMA support"
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depends on ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
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select DMA_ENGINE
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help
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Support the Atmel AHB DMA controller. This can be integrated in
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chips such as the Atmel AT91SAM9RL.
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config FSL_DMA
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tristate "Freescale Elo and Elo Plus DMA support"
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depends on FSL_SOC
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select DMA_ENGINE
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---help---
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Enable support for the Freescale Elo and Elo Plus DMA controllers.
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The Elo is the DMA controller on some 82xx and 83xx parts, and the
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Elo Plus is the DMA controller on 85xx and 86xx parts.
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config MPC512X_DMA
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tristate "Freescale MPC512x built-in DMA engine support"
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depends on PPC_MPC512x
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select DMA_ENGINE
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---help---
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Enable support for the Freescale MPC512x built-in DMA engine.
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config MV_XOR
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bool "Marvell XOR engine support"
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depends on PLAT_ORION
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select DMA_ENGINE
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---help---
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Enable support for the Marvell XOR engine.
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config MX3_IPU
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bool "MX3x Image Processing Unit support"
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depends on ARCH_MX3
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select DMA_ENGINE
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default y
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help
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If you plan to use the Image Processing unit in the i.MX3x, say
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Y here. If unsure, select Y.
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config MX3_IPU_IRQS
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int "Number of dynamically mapped interrupts for IPU"
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depends on MX3_IPU
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range 2 137
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default 4
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help
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Out of 137 interrupt sources on i.MX31 IPU only very few are used.
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To avoid bloating the irq_desc[] array we allocate a sufficient
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number of IRQ slots and map them dynamically to specific sources.
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config TXX9_DMAC
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tristate "Toshiba TXx9 SoC DMA support"
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depends on MACH_TX49XX || MACH_TX39XX
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select DMA_ENGINE
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help
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Support the TXx9 SoC internal DMA controller. This can be
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integrated in chips such as the Toshiba TX4927/38/39.
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config SH_DMAE
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tristate "Renesas SuperH DMAC support"
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depends on SUPERH && SH_DMA
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depends on !SH_DMA_API
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select DMA_ENGINE
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help
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Enable support for the Renesas SuperH DMA controllers.
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config COH901318
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bool "ST-Ericsson COH901318 DMA support"
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select DMA_ENGINE
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depends on ARCH_U300
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help
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Enable support for ST-Ericsson COH 901 318 DMA.
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config STE_DMA40
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bool "ST-Ericsson DMA40 support"
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depends on ARCH_U8500
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select DMA_ENGINE
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help
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Support for ST-Ericsson DMA40 controller
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config AMCC_PPC440SPE_ADMA
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tristate "AMCC PPC440SPe ADMA support"
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depends on 440SPe || 440SP
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select DMA_ENGINE
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select ARCH_HAS_ASYNC_TX_FIND_CHANNEL
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help
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Enable support for the AMCC PPC440SPe RAID engines.
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config TIMB_DMA
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tristate "Timberdale FPGA DMA support"
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depends on MFD_TIMBERDALE || HAS_IOMEM
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select DMA_ENGINE
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help
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Enable support for the Timberdale FPGA DMA engine.
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config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
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bool
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config PL330_DMA
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tristate "DMA API Driver for PL330"
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select DMA_ENGINE
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depends on PL330
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help
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Select if your platform has one or more PL330 DMACs.
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You need to provide platform specific settings via
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platform_data for a dma-pl330 device.
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config PCH_DMA
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tristate "Topcliff PCH DMA support"
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depends on PCI && X86
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select DMA_ENGINE
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help
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Enable support for the Topcliff PCH DMA engine.
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config DMA_ENGINE
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bool
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comment "DMA Clients"
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depends on DMA_ENGINE
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config NET_DMA
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bool "Network: TCP receive copy offload"
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depends on DMA_ENGINE && NET
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default (INTEL_IOATDMA || FSL_DMA)
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help
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This enables the use of DMA engines in the network stack to
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offload receive copy-to-user operations, freeing CPU cycles.
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Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise
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say N.
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config ASYNC_TX_DMA
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bool "Async_tx: Offload support for the async_tx api"
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depends on DMA_ENGINE
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help
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This allows the async_tx api to take advantage of offload engines for
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memcpy, memset, xor, and raid6 p+q operations. If your platform has
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a dma engine that can perform raid operations and you have enabled
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MD_RAID456 say Y.
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If unsure, say N.
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config DMATEST
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tristate "DMA Test client"
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depends on DMA_ENGINE
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help
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Simple DMA test client. Say N unless you're debugging a
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DMA Device driver.
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endif
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