forked from luck/tmp_suning_uos_patched
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
|
/*
|
||
|
|
* 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 <linux/module.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;
|
||
|
|
|
||
|
|
might_sleep();
|
||
|
|
|
||
|
|
if ( eventType < HvLpEvent_Type_NumTypes ) {
|
||
|
|
if ( !lpEventHandlerPaths[eventType] ) {
|
||
|
|
lpEventHandler[eventType] = NULL;
|
||
|
|
rc = 0;
|
||
|
|
|
||
|
|
/* We now sleep until all other CPUs have scheduled. This ensures that
|
||
|
|
* the deletion is seen by all other CPUs, and that the deleted handler
|
||
|
|
* isn't still running on another CPU when we return. */
|
||
|
|
synchronize_kernel();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(HvLpEvent_registerHandler);
|
||
|
|
EXPORT_SYMBOL(HvLpEvent_unregisterHandler);
|
||
|
|
|
||
|
|
/* (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;
|
||
|
|
}
|
||
|
|
|