1# 2# DMA engine configuration 3# 4 5menuconfig DMADEVICES 6 bool "DMA Engine support" 7 depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX || PPC 8 depends on !HIGHMEM64G 9 help 10 DMA engines can do asynchronous data transfers without 11 involving the host CPU. Currently, this framework can be 12 used to offload memory copies in the network stack and 13 RAID operations in the MD driver. 14 15if DMADEVICES 16 17comment "DMA Devices" 18 19config INTEL_IOATDMA 20 tristate "Intel I/OAT DMA support" 21 depends on PCI && X86 22 select DMA_ENGINE 23 select DCA 24 help 25 Enable support for the Intel(R) I/OAT DMA engine present 26 in recent Intel Xeon chipsets. 27 28 Say Y here if you have such a chipset. 29 30 If unsure, say N. 31 32config INTEL_IOP_ADMA 33 tristate "Intel IOP ADMA support" 34 depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX 35 select ASYNC_CORE 36 select DMA_ENGINE 37 help 38 Enable support for the Intel(R) IOP Series RAID engines. 39 40config FSL_DMA 41 bool "Freescale MPC85xx/MPC83xx DMA support" 42 depends on PPC 43 select DMA_ENGINE 44 ---help--- 45 Enable support for the Freescale DMA engine. Now, it support 46 MPC8560/40, MPC8555, MPC8548 and MPC8641 processors. 47 The MPC8349, MPC8360 is also supported. 48 49config FSL_DMA_SELFTEST 50 bool "Enable the self test for each DMA channel" 51 depends on FSL_DMA 52 default y 53 ---help--- 54 Enable the self test for each DMA channel. A self test will be 55 performed after the channel probed to ensure the DMA works well. 56 57config DMA_ENGINE 58 bool 59 60comment "DMA Clients" 61 depends on DMA_ENGINE 62 63config NET_DMA 64 bool "Network: TCP receive copy offload" 65 depends on DMA_ENGINE && NET 66 help 67 This enables the use of DMA engines in the network stack to 68 offload receive copy-to-user operations, freeing CPU cycles. 69 Since this is the main user of the DMA engine, it should be enabled; 70 say Y here. 71 72endif 73