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/*
* HvLpEvent.c
* Copyright (C) 2001 Mike Corrigan IBM Corporation
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#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;
}
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