HvLpEvent.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:2k
- /*
- * Copyright 2001 Mike Corrigan IBM Corp
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #include <linux/stddef.h>
- #include <linux/kernel.h>
- #include <asm/system.h>
- #include <asm/iSeries/HvLpEvent.h>
- #include <asm/iSeries/HvCallEvent.h>
- #include <asm/iSeries/LparData.h>
- /* Array of LpEvent handler functions */
- LpEventHandler lpEventHandler[HvLpEvent_Type_NumTypes];
- unsigned lpEventHandlerPaths[HvLpEvent_Type_NumTypes];
- /* Register a handler for an LpEvent type */
- int HvLpEvent_registerHandler( HvLpEvent_Type eventType, LpEventHandler handler )
- {
- int rc = 1;
- if ( eventType < HvLpEvent_Type_NumTypes ) {
- lpEventHandler[eventType] = handler;
- rc = 0;
- }
- return rc;
-
- }
- int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType )
- {
- int rc = 1;
- if ( eventType < HvLpEvent_Type_NumTypes ) {
- if ( !lpEventHandlerPaths[eventType] ) {
- lpEventHandler[eventType] = NULL;
- rc = 0;
- }
- }
- return rc;
- }
- /* (lpIndex is the partition index of the target partition.
- * needed only for VirtualIo, VirtualLan and SessionMgr. Zero
- * indicates to use our partition index - for the other types)
- */
- int HvLpEvent_openPath( HvLpEvent_Type eventType, HvLpIndex lpIndex )
- {
- int rc = 1;
- if ( eventType < HvLpEvent_Type_NumTypes &&
- lpEventHandler[eventType] ) {
- if ( lpIndex == 0 )
- lpIndex = itLpNaca.xLpIndex;
- HvCallEvent_openLpEventPath( lpIndex, eventType );
- ++lpEventHandlerPaths[eventType];
- rc = 0;
- }
- return rc;
- }
- int HvLpEvent_closePath( HvLpEvent_Type eventType, HvLpIndex lpIndex )
- {
- int rc = 1;
- if ( eventType < HvLpEvent_Type_NumTypes &&
- lpEventHandler[eventType] &&
- lpEventHandlerPaths[eventType] ) {
- if ( lpIndex == 0 )
- lpIndex = itLpNaca.xLpIndex;
- HvCallEvent_closeLpEventPath( lpIndex, eventType );
- --lpEventHandlerPaths[eventType];
- rc = 0;
- }
- return rc;
- }