18 Apr
2012
18 Apr
'12
7:31 a.m.
On Wednesday 18 April 2012, Hiroshi Doyu wrote:
If we can consider IOMMU as one of the implementation of DMA(Direct Memory Access), the prefix "dma-(window)" may make sense here. Then, we don't have to introduce a new concept "IO virtual address(iova)" in addition to the existing "bus address"(?)
Anyway, either name would be ok for me;)
I would just use dma-window, without the "ibm," prefix but following the same conventions. Note that the of_parse_dma_window function is currently only defined in powerpc specific code, and should get moved to drivers/of from arch/powerpc/kernel/prom_parse.c.
Arnd