CONFIG_DMA_IP27 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_DMA_IP27 (not configurable)

modulename: dma-ip27.ko

configname: CONFIG_DMA_IP27

Linux/MIPS Kernel Configuration
└─>Machine selection
└─>DMA_IP27
In linux kernel since version 2.6.12  
source code:
arch/mips/mm/dma-ip27.c
is depended by
CONFIG_SGI_IP27