| Chris Leech | c13c826 | 2006-05-23 17:18:44 -0700 | [diff] [blame] | 1 | # |
| 2 | # DMA engine configuration |
| 3 | # |
| 4 | |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 5 | menuconfig DMADEVICES |
| Haavard Skinnemoen | 6d4f587 | 2007-11-28 16:21:43 -0800 | [diff] [blame^] | 6 | bool "DMA Engine support" |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 7 | depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX |
| 8 | help |
| Haavard Skinnemoen | 6d4f587 | 2007-11-28 16:21:43 -0800 | [diff] [blame^] | 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. |
| Chris Leech | c13c826 | 2006-05-23 17:18:44 -0700 | [diff] [blame] | 13 | |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 14 | if DMADEVICES |
| Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 15 | |
| Chris Leech | 0bbd5f4 | 2006-05-23 17:35:34 -0700 | [diff] [blame] | 16 | comment "DMA Devices" |
| 17 | |
| 18 | config INTEL_IOATDMA |
| 19 | tristate "Intel I/OAT DMA support" |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 20 | depends on PCI && X86 |
| 21 | select DMA_ENGINE |
| 22 | select DCA |
| 23 | help |
| 24 | Enable support for the Intel(R) I/OAT DMA engine present |
| 25 | in recent Intel Xeon chipsets. |
| 26 | |
| 27 | Say Y here if you have such a chipset. |
| 28 | |
| 29 | If unsure, say N. |
| Dan Williams | c211092 | 2007-01-02 13:52:26 -0700 | [diff] [blame] | 30 | |
| 31 | config INTEL_IOP_ADMA |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 32 | tristate "Intel IOP ADMA support" |
| 33 | depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX |
| Dan Williams | c211092 | 2007-01-02 13:52:26 -0700 | [diff] [blame] | 34 | select ASYNC_CORE |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 35 | select DMA_ENGINE |
| 36 | help |
| 37 | Enable support for the Intel(R) IOP Series RAID engines. |
| Dan Williams | c211092 | 2007-01-02 13:52:26 -0700 | [diff] [blame] | 38 | |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 39 | config DMA_ENGINE |
| 40 | bool |
| 41 | |
| 42 | comment "DMA Clients" |
| 43 | depends on DMA_ENGINE |
| 44 | |
| 45 | config NET_DMA |
| 46 | bool "Network: TCP receive copy offload" |
| 47 | depends on DMA_ENGINE && NET |
| Shannon Nelson | 2ed6dc3 | 2007-10-16 01:27:42 -0700 | [diff] [blame] | 48 | help |
| 49 | This enables the use of DMA engines in the network stack to |
| 50 | offload receive copy-to-user operations, freeing CPU cycles. |
| 51 | Since this is the main user of the DMA engine, it should be enabled; |
| 52 | say Y here. |
| 53 | |
| 54 | endif |