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// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/include/kernel/intmsghandler.H $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2011
//
// p1
//
// Object Code Only (OCO) source materials
// Licensed Internal Code Source Materials
// IBM HostBoot Licensed Internal Code
//
// The source code for this program is not published or other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
#ifndef __KERNEL_INTERRUPTMSGHDLR_H
#define __KERNEL_INTERRUPTMSGHDLR_H
#include <stdint.h>
#include <kernel/types.h>
#include <kernel/msghandler.H>
#include <kernel/msg.H>
/**
* @class InterruptMsgHdlr
* @brief Class to handle sending a message to user space for
* an External Interrupt.
*
* This class extends from the base MessageHandler so the base send/receive
* message functions can be utilized. It overrides how to handle the message
* responses
*/
class InterruptMsgHdlr : public MessageHandler
{
public:
// Notes:
// All external interrupts are routed to one cpu core
// External Interrupts are only processed one at a time
// So we don't need a spinlock
/**
* Constructor
*/
InterruptMsgHdlr(MessageQueue * i_msgQ)
: MessageHandler(NULL,i_msgQ) {} // TODO need splinlock?
/**
* Destructor.
*/
virtual ~InterruptMsgHdlr() {};
/**
* Handle response to 'send message'
*
* @param[in] i_type - The message type previously sent.
* @param[in] i_key - The key value for the received message.
* @param[in] i_task - The deferred task.
* @param[in] i_rc - The response rc from userspace.
*
* @return HandleResult - The desired behavior on the 'recv message'
* interface for this <key, task> pair.
*/
virtual HandleResult handleResponse(msg_sys_types_t i_type,void* i_key,
task_t* i_task,int i_rc);
/**
* Create the InterruptMsgHdlr to handle external interrupts
* @param[in] i_msgQ The message queue
*/
static void create(MessageQueue * i_msgQ);
/**
* Handle an external interrupt from HW
*/
static void handleInterrupt();
/**
* Add cpu core - set up the external interrupt registers
* @param[in] i_pir The cpu id of the core to to set-up
* @note should be called when ever a new core becomes active
*/
static void addCpuCore(uint64_t i_pir);
private:
static InterruptMsgHdlr * cv_instance;
};
#endif
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