[src/trunk]: src/share/man/man4/man4.amiga Add DIAGNOSTICS section.

[rkujawa <rkujawa%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/970c3ca077f4
branches:  trunk
changeset: 779978:970c3ca077f4
user:      rkujawa <rkujawa%NetBSD.org@localhost>
date:      Tue Jul 03 19:09:44 2012 +0000

description:
Add DIAGNOSTICS section.

diffstat:

 share/man/man4/man4.amiga/empb.4 |  18 ++++++++++++++++--
 1 files changed, 16 insertions(+), 2 deletions(-)

diffs (39 lines):

diff -r ceb4dc0bc47a -r 970c3ca077f4 share/man/man4/man4.amiga/empb.4
--- a/share/man/man4/man4.amiga/empb.4  Tue Jul 03 18:12:05 2012 +0000
+++ b/share/man/man4/man4.amiga/empb.4  Tue Jul 03 19:09:44 2012 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: empb.4,v 1.4 2012/06/27 22:23:45 wiz Exp $
+.\" $NetBSD: empb.4,v 1.5 2012/07/03 19:09:44 rkujawa Exp $
 .\"
 .\" Copyright (c) 2012 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd June 27, 2012
+.Dd July 3, 2012
 .Dt EMPB 4 amiga
 .Os
 .Sh NAME
@@ -54,6 +54,20 @@
 .It ELBOX Mediator 1200 SX
 .It ELBOX Mediator 1200 TX
 .El
+.Sh DIAGNOSTICS
+.Bl -diag
+.It empb: linear space mapping might not work
+PCI card driver is trying map memory space with BUS_SPACE_MAP_LINEAR flag.
+Due to windowed design of Medaitor, it is expected to fail miserably if
+normal memory space access methods (e.g. pointer dereference) are used
+instead of
+.Xr bus_space 9
+methods.
+.It empb%d: couldn't find memory space, check your WINDOW jumper
+PCI memory space access is disabled on a hardware level. The
+.Nm
+driver will work anyway, but only PCI I/O space will be accessible. To enable
+memory space set WINDOW jumper to 4MB or 8MB.
 .Sh SEE ALSO
 .Xr mppb 4 ,
 .Xr p5pb 4 ,