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authorShannon Nelson <shannon.nelson@intel.com>2007-10-16 01:27:42 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:09 -0700
commit2ed6dc34f9ed39bb8e4c81ea1056f0ba56315841 (patch)
treee3f6ca7961f9c4e34453d06e584c0bc98ec630d7 /drivers/dma/Kconfig
parent7589670f37736bcc119ebfbd69aafea6d585d1d4 (diff)
I/OAT: Add DCA services
Add code to connect to the DCA driver and provide cpu tags for use by drivers that would like to use Direct Cache Access hints. [Adrian Bunk] Several Kconfig cleanup items [Andrew Morten, Chris Leech] Fix for using cpu_physical_id() even when built for uni-processor Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dma/Kconfig')
-rw-r--r--drivers/dma/Kconfig60
1 files changed, 35 insertions, 25 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 8f670dae53b..9c91b0fd134 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -2,42 +2,52 @@
# DMA engine configuration
#
-menu "DMA Engine support"
- depends on HAS_DMA
+menuconfig DMADEVICES
+ bool "DMA Offload Engine support"
+ depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
+ help
+ Intel(R) offload engines enable offloading memory copies in the
+ network stack and RAID operations in the MD driver.
+
+if DMADEVICES
+
+comment "DMA Devices"
+
+config INTEL_IOATDMA
+ tristate "Intel I/OAT DMA support"
+ depends on PCI && X86
+ select DMA_ENGINE
+ select DCA
+ help
+ Enable support for the Intel(R) I/OAT DMA engine present
+ in recent Intel Xeon chipsets.
+
+ Say Y here if you have such a chipset.
+
+ If unsure, say N.
+
+config INTEL_IOP_ADMA
+ tristate "Intel IOP ADMA support"
+ depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
+ select ASYNC_CORE
+ select DMA_ENGINE
+ help
+ Enable support for the Intel(R) IOP Series RAID engines.
config DMA_ENGINE
- bool "Support for DMA engines"
- ---help---
- DMA engines offload bulk memory operations from the CPU to dedicated
- hardware, allowing the operations to happen asynchronously.
+ bool
comment "DMA Clients"
+ depends on DMA_ENGINE
config NET_DMA
bool "Network: TCP receive copy offload"
depends on DMA_ENGINE && NET
default y
- ---help---
+ help
This enables the use of DMA engines in the network stack to
offload receive copy-to-user operations, freeing CPU cycles.
Since this is the main user of the DMA engine, it should be enabled;
say Y here.
-comment "DMA Devices"
-
-config INTEL_IOATDMA
- tristate "Intel I/OAT DMA support"
- depends on DMA_ENGINE && PCI
- default m
- ---help---
- Enable support for the Intel(R) I/OAT DMA engine.
-
-config INTEL_IOP_ADMA
- tristate "Intel IOP ADMA support"
- depends on DMA_ENGINE && (ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX)
- select ASYNC_CORE
- default m
- ---help---
- Enable support for the Intel(R) IOP Series RAID engines.
-
-endmenu
+endif