projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c13c8260 CL |
1 | # |
| 2 | # DMA engine configuration | |
| 3 | # | |
| 4 | ||
| 2ed6dc34 | 5 | menuconfig DMADEVICES |
| 6d4f5879 | 6 | bool "DMA Engine support" |
| 9c402f4e | 7 | depends on !HIGHMEM64G && HAS_DMA |
| 2ed6dc34 | 8 | help |
| 6d4f5879 HS |
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 | |
| 9c402f4e DW |
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. | |
| 2ed6dc34 SN |
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 ASYNC_CORE | |
| 37 | select DMA_ENGINE | |
| 38 | help | |
| 39 | Enable support for the Intel(R) IOP Series RAID engines. | |
| c13c8260 | 40 | |
| 173acc7c ZW |
41 | config FSL_DMA |
| 42 | bool "Freescale MPC85xx/MPC83xx DMA support" | |
| 43 | depends on PPC | |
| 44 | select DMA_ENGINE | |
| 45 | ---help--- | |
| 46 | Enable support for the Freescale DMA engine. Now, it support | |
| 47 | MPC8560/40, MPC8555, MPC8548 and MPC8641 processors. | |
| 48 | The MPC8349, MPC8360 is also supported. | |
| 49 | ||
| c13c8260 | 50 | config DMA_ENGINE |
| 2ed6dc34 | 51 | bool |
| c13c8260 | 52 | |
| db217334 | 53 | comment "DMA Clients" |
| 2ed6dc34 | 54 | depends on DMA_ENGINE |
| db217334 CL |
55 | |
| 56 | config NET_DMA | |
| 57 | bool "Network: TCP receive copy offload" | |
| 58 | depends on DMA_ENGINE && NET | |
| 9c402f4e | 59 | default (INTEL_IOATDMA || FSL_DMA) |
| 2ed6dc34 | 60 | help |
| db217334 CL |
61 | This enables the use of DMA engines in the network stack to |
| 62 | offload receive copy-to-user operations, freeing CPU cycles. | |
| 9c402f4e DW |
63 | |
| 64 | Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise | |
| 65 | say N. | |
| db217334 | 66 | |
| 2ed6dc34 | 67 | endif |