Module Name: src
Committed By: rkujawa
Date: Sat Dec 3 23:09:42 UTC 2011
Modified Files:
src/share/man/man4/man4.amiga: mppb.4
Log Message:
Extend the mppb(4) man page.
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/share/man/man4/man4.amiga/mppb.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/man4.amiga/mppb.4
diff -u src/share/man/man4/man4.amiga/mppb.4:1.2 src/share/man/man4/man4.amiga/mppb.4:1.3
--- src/share/man/man4/man4.amiga/mppb.4:1.2 Mon Sep 19 19:18:19 2011
+++ src/share/man/man4/man4.amiga/mppb.4 Sat Dec 3 23:09:42 2011
@@ -1,4 +1,4 @@
-.\" $NetBSD: mppb.4,v 1.2 2011/09/19 19:18:19 rkujawa Exp $
+.\" $NetBSD: mppb.4,v 1.3 2011/12/03 23:09:42 rkujawa Exp $
.\"
.\" Copyright (c) 2011 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 September 17, 2011
+.Dd December 3, 2011
.Dt MPPB 4 amiga
.Os
.Sh NAME
@@ -47,7 +47,12 @@ The
driver supports the following hardware:
.Bl -tag -width "PROMETHEUS" -offset indent
.It Em PROMETHEUS
-Matay Prometheus.
+Matay Prometheus. Manufacturer 44359, product 1.
+.El
+.Sh DIAGNOSTICS
+.Bl -diag
+.It Unable to allocate space in parent map.
+The kernel has ran out of virtual memory space.
.El
.Sh SEE ALSO
.Xr pci 4
@@ -64,3 +69,18 @@ driver was written by
.An Radoslaw Kujawa Aq [email protected] .
.Sh BUGS
The hardware does not support DMA to host memory.
+.Pp
+The Prometheus does not support repeating of PCI transations, instead if the
+PCI card demands a retry of transaction, it returns value 0xFFFFFFFF.
+This is currently not handled by the
+.Nm
+driver and will confuse some PCI card drivers.
+.Pp
+The system may run out of kernel virtual memory space if Prometheus is present.
+This is due to fact that m68k-specific
+.Xr pmap 9
+code places User Page Table base address at statically defined address
+0x10000000, which does not leave enough kernel space to fit a 512MB board, such
+as the Prometheus.
+It is possible to work around this problem, by moving User Page Table base
+to higher address.
