2 * Copyright 2001 Mike Corrigan IBM Corp
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 #include <linux/stddef.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <asm/system.h>
13 #include <asm/iSeries/HvLpEvent.h>
14 #include <asm/iSeries/HvCallEvent.h>
15 #include <asm/iSeries/LparData.h>
17 /* Array of LpEvent handler functions */
18 LpEventHandler lpEventHandler[HvLpEvent_Type_NumTypes];
19 unsigned lpEventHandlerPaths[HvLpEvent_Type_NumTypes];
21 /* Register a handler for an LpEvent type */
23 int HvLpEvent_registerHandler( HvLpEvent_Type eventType, LpEventHandler handler )
26 if ( eventType < HvLpEvent_Type_NumTypes ) {
27 lpEventHandler[eventType] = handler;
34 int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType )
37 if ( eventType < HvLpEvent_Type_NumTypes ) {
38 if ( !lpEventHandlerPaths[eventType] ) {
39 lpEventHandler[eventType] = NULL;
45 EXPORT_SYMBOL(HvLpEvent_registerHandler);
46 EXPORT_SYMBOL(HvLpEvent_unregisterHandler);
48 /* (lpIndex is the partition index of the target partition.
49 * needed only for VirtualIo, VirtualLan and SessionMgr. Zero
50 * indicates to use our partition index - for the other types)
52 int HvLpEvent_openPath( HvLpEvent_Type eventType, HvLpIndex lpIndex )
55 if ( eventType < HvLpEvent_Type_NumTypes &&
56 lpEventHandler[eventType] ) {
58 lpIndex = itLpNaca.xLpIndex;
59 HvCallEvent_openLpEventPath( lpIndex, eventType );
60 ++lpEventHandlerPaths[eventType];
66 int HvLpEvent_closePath( HvLpEvent_Type eventType, HvLpIndex lpIndex )
69 if ( eventType < HvLpEvent_Type_NumTypes &&
70 lpEventHandler[eventType] &&
71 lpEventHandlerPaths[eventType] ) {
73 lpIndex = itLpNaca.xLpIndex;
74 HvCallEvent_closeLpEventPath( lpIndex, eventType );
75 --lpEventHandlerPaths[eventType];