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- Document the fact that you can specify several DMA operations to

Browse Source 
bus_dmamap_sync() by OR'ing them together.
- Don't document what BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE and
  BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE is supposed to do when
  passed to bus_dmamap_sync().  There are other possible combinations
  and the reader just needs to know what the individual flags do and
  that he can combine different DMA operations.
- Use .An when listing authors.

Reviewed by:	hmp
This commit is contained in:
Maxime Henrion 2003-06-13 20:07:49 +00:00
parent 6cc6353f93
commit b9b855dd65
1 changed files with 28 additions and 15 deletions
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43
share/man/man9/bus_dma.9
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@ -238,6 +238,7 @@ The
allows the type of DMA operation that will be or has been performed
to be communicated to the system so that the correct coherency measures
are taken.
It is possible to combine different DMA operations by OR'ing them together.
All operations specified below are performed from the DMA engine's
point of view:
.Bl -tag -width BUS_DMASYNC_POSTWRITE
@ -247,18 +248,12 @@ but prior to DMA read operations.
.It Dv BUS_DMASYNC_PREWRITE
Perform any synchronization required after an update of memory by the CPU
but prior to DMA write operations.
.It Dv BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE
Perform any synchronization required prior to a combination of DMA read
and write operations.
.It Dv BUS_DMASYNC_POSTREAD
Perform any synchronization required after DMA read operations, but prior
to CPU access of the memory.
.It Dv BUS_DMASYNC_POSTWRITE
Perform any synchronization required after DMA write operations, but prior
to CPU access of the memory.
.It Dv BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE
Perform any synchronization required after a combination of DMA read
and write operations.
.El
.El
.Sh FUNCTIONS
@ -701,20 +696,38 @@ while allowing callers to queue up on scarce resources.
.Sh AUTHORS
The
.Nm
interface was designed and implemented by Jason R. Thorpe of the
Numerical Aerospace Simulation Facility, NASA Ames Research Center.
interface was designed and implemented by
.An Jason R. Thorpe
of the Numerical Aerospace Simulation Facility, NASA Ames Research Center.
Additional input on the
.Nm
design was provided by Chris Demetriou, Charles Hannum, Ross Harvey,
Matthew Jacob, Jonathan Stone, and Matt Thomas.
design was provided by
.An -nosplit
.An Chris Demetriou ,
.An Charles Hannum ,
.An Ross Harvey ,
.An Matthew Jacob ,
.An Jonathan Stone ,
and
.An Matt Thomas .
.Pp
The
.Nm
interface in
.Fx
benefits from the contributions of Justin T. Gibbs,
Peter Wemm, Doug Rabson, Matthew N. Dodd, Sam Leffler,
Maxime Henrion, Jake Burkholder, Takahashi Yoshihiro,
Scott Long and many others.
benefits from the contributions of
.An Justin T. Gibbs ,
.An Peter Wemm ,
.An Doug Rabson ,
.An Matthew N. Dodd ,
.An Sam Leffler ,
.An Maxime Henrion ,
.An Jake Burkholder ,
.An Takahashi Yoshihiro ,
.An Scott Long
and many others.
.Pp
This manual page was written by Hiten M. Pandya and Justin T. Gibbs.
This manual page was written by
.An Hiten M. Pandya
and
.An Justin T. Gibbs .