Re: bus_dma without bouncing

[Mouse <mouse%Rodents-Montreal.ORG@localhost>]

> [1] [...].  But there are plenty of devices that require aligned
>     addresses for DMA, such as Intel wireless cards which require 8-
>     or 12-bit alignment.  [...]

What does 12-bit alignment even _mean_ on an 8-bit-addressing-unit
machine (which IIRC includes everything NetBSD runs on)?  Does it
differ from 3-byte alignment in any practical sense?  Do the interfaces
even support alignment to other than a power of two?

/~\ The ASCII				  Mouse
\ / Ribbon Campaign
 X  Against HTML		mouse%rodents-montreal.org@localhost
/ \ Email!	     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B