diff options
| -rw-r--r-- | drivers/ieee1394/Kconfig | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/ieee1394/Kconfig b/drivers/ieee1394/Kconfig index 39142e2..06783c1 100644 --- a/drivers/ieee1394/Kconfig +++ b/drivers/ieee1394/Kconfig @@ -128,8 +128,17 @@ config IEEE1394_SBP2 1394 bus. SBP-2 devices include harddrives and DVD devices. config IEEE1394_SBP2_PHYS_DMA - bool "Enable Phys DMA support for SBP2 (Debug)" - depends on IEEE1394 && IEEE1394_SBP2 + bool "Enable replacement for physical DMA in SBP2" + depends on IEEE1394 && IEEE1394_SBP2 && EXPERIMENTAL + help + This builds sbp2 for use with non-OHCI host adapters which do not + support physical DMA or for when ohci1394 is run with phys_dma=0. + Physical DMA is data movement without assistence of the drivers' + interrupt handlers. This option includes the interrupt handlers + that are required in absence of this hardware feature. + + This option is buggy and currently broken on some architectures. + If unsure, say N. config IEEE1394_ETH1394 tristate "Ethernet over 1394" |