Re: Sparc DMA driver example

>Can anyone suggest driver source code (or documenation) that would be helpful
>in writing a driver that uses DMA on a Sparc (Ultra 10, etc.) ?
>
>I am trying to find a overview of the operations required on the various
>types of memory accessable from the driver.

In the Linux kernel directory, there is a file called 
Documentation/DMA-mapping.txt that
has most of the information that you want. It will tell you what you 
need to know
to write 64/32 bit safe drivers that are architecture independent.
If you need a copy, let me know.  But I suspect you have it already.

Much of the same is now covered in the Rubini/Corbet "Linux Device 
Drivers" book
(second edition only) published by O'Rielly.   It has the advantage of covering
lots of other relevant topics to Linux device driver writers.

-- 
Luis F. Ortiz