John-Mark Gurney wrote:
Ruslan Ermilov wrote this message on Thu, Mar 02, 2006 at 01:26 +0200:
On Tue, Feb 28, 2006 at 07:58:57PM +0000, John-Mark Gurney wrote:
jmg 2006-02-28 19:58:57 UTC
FreeBSD src repository
Modified files:
share/man/man9 bus_dma.9
Log:
update examples to use the correct terms that was never updated when the
earlier descriptions were gone over...
MFC after: 3 days
Revision Changes Path
1.32 +3 -3 src/share/man/man9/bus_dma.9
Not enough of fixing: "DMA read" and "DMA write" are also entangled here.
Nope... WRITE == DMA read... Read the descriptions of the flags
very carefully... If you aren't confused, you don't understand it..
The reason you're confused is the reason why everyone gets it wrong,
and no one ever gets it correct the first time trying to figure out
which one to use...
It's the same thinking you have to use when dealing with any of the
t10/11 SCSI or ATA documents and is standard for hw design of the
peripherals anyway. I think it's good busdma matches this even if it's
not natural if you're seeing it for the first time.
--
Nate
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