On Tue, 16 Jun 1998 21:29:32 +0200 
 Dante Profeta <dante@mclink.it> wrote:

 > Hi folks,
 > 
 > I'm still trying to write a driver...
 > 
 > I need to know what this functions do and ...why ;-)
 > 
 > bus_dmamem_alloc();
 > bus_dmamem_map();
 > bus_dmamap_create();
 > bus_dmamap_load();
 > 
 > Could you please describe them briefly?

The bus_dma(9) manual page describes them.  Example usages can be found
in the bha driver (sys/dev/ic/bha.c).

Jason R. Thorpe                                       thorpej@nas.nasa.gov
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