07f2211e4f
async_tx.ko is a consumer of dma channels. A circular dependency arises if modules in drivers/dma rely on common code in async_tx.ko. It prevents either module from being unloaded. Move dma_wait_for_async_tx and async_tx_run_dependencies to dmaeninge.o where they should have been from the beginning. Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
90 lines
2.2 KiB
Plaintext
90 lines
2.2 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 !HIGHMEM64G && 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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if DMADEVICES
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comment "DMA Devices"
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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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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 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 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 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 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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