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authorAlexandre Bounine <Alexandre.Bounine@tundra.com>2007-02-10 12:46:47 +0300
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 22:18:07 +0300
commitc70555b051f2a32bf94a7e1c75b6b6759031b989 (patch)
treeb0ab2e8cd1402e98a85b4303e5f14f39a3e71fc2 /include/linux/rio.h
parentd5698c28b6e4711e4747bf155f69936208d60e28 (diff)
downloadlinux-c70555b051f2a32bf94a7e1c75b6b6759031b989.tar.xz
[PATCH] rapidio: fix multi-switch enumeration
This patch contains two fixes for RapisIO enumeration logic: 1. Fix enumeration in configurations with multiple switches. The patch adds: a. Enumeration of an empty switch. Empty switch is a switch that does not have any endpoint devices attached to it (except host device or previous switch in a chain). New code assigns a phony destination ID associated with the switch and sets up corresponding routes. b. Adds a second pass to the enumeration to setup routes to devices discovered after switch was scanned. 2. Fix enumeration failure when riohdid parameter has non-zero value. Current version fails to setup response path to the host when it has destination ID other that 0. Signed-off-by: Alexandre Bounine <alexandreb@tundra.com> Acked-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/rio.h')
-rw-r--r--include/linux/rio.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/rio.h b/include/linux/rio.h
index d93857056cb9..68e3f6853fa6 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -25,6 +25,7 @@
#define RIO_ANY_DESTID 0xff
#define RIO_NO_HOPCOUNT -1
+#define RIO_INVALID_DESTID 0xffff
#define RIO_MAX_MPORT_RESOURCES 16
#define RIO_MAX_DEV_RESOURCES 16