/*----------------------------------------------------------------------------*
*  Copyright (c) 2005        Southeastern Universities Research Association, *
*                            Thomas Jefferson National Accelerator Facility  *
*                                                                            *
*    This software was developed under a United States Government license    *
*    described in the NOTICE file included as part of this distribution.     *
*                                                                            *
*    E.Wolin, 25-Feb-2005, Jefferson Lab                                     *
*                                                                            *
*    Authors: Elliott Wolin                                                  *
*             wolin@jlab.org                    Jefferson Lab, MS-6B         *
*             Phone: (757) 269-7365             12000 Jefferson Ave.         *
*             Fax:   (757) 269-5519             Newport News, VA 23606       *
*
*----------------------------------------------------------------------------*/

#ifndef _vxTIInterruptService_hxx
#define _vxTIInterruptService_hxx




#include <vxWorks.h>
#include <unistd.h>
#include <intLib.h>
#include <iv.h>
#include <semLib.h>
#include <taskLib.h>


#include <InterruptibleObject.hxx>


namespace codaObject {


// for board support packages
extern "C" {
  extern int sysBusToLocalAdrs(int,char*,char**);
  extern int intDisconnect(int);
  extern int sysIntEnable(int);
  extern int sysIntDisable(int); // ??? is this needed
}


// default TI and VME addresses, etc. for A16/D16 access mode

// settable by switches on TI module
#define TI_BASE_ADDR          0x0ed0
#define INTERRUPT_LEVEL       5

// user selectable within constraints from cpu
#define INTERRUPT_VECTOR      0xee
#define DISPATCH_PRIORITY     100

// fixed by TI board itself
#define VME_ACCESS_MODE       0x29
#define TI_RESET              0x80
#define TI_MODE               0x7
#define INTERRUPT_REENABLE    0x8000



//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------


/**
 * Implements InterruptService for stand-alone TI board in vxWorks. 
 */
class vxTIInterruptService : public InterruptService {
  
public:
  vxTIInterruptService(unsigned short *ti_addr = (unsigned short*)TI_BASE_ADDR, int dispatchPriority = DISPATCH_PRIORITY,
                       int interruptLevel = INTERRUPT_LEVEL, short interruptVector = INTERRUPT_VECTOR);
  virtual ~vxTIInterruptService(void) throw();
  virtual bool setupInterrupt(void);
  virtual bool enableInterrupt(void);
  virtual bool pauseInterrupt(void)  {return(true);}
  virtual bool resumeInterrupt(void) {return(true);}
  virtual bool deleteInterrupt(void);

  virtual int dispatchInterrupt(void);


private:
  static void ISR(int sem);


protected:
  unsigned short *myBaseAddr;   /**<Base address of TI board.*/
  unsigned short *myAddr;       /**<Local address of this TI board.*/
  int myInterruptTaskId;        /**<Interrupt task id.*/
  SEM_ID mySemId;               /**<Semaphore id.*/
  int myDispatchPriority;       /**<Priority for dispatch task.*/
  int myInterruptLevel;         /**<Interrupt level.*/
  int myInterruptVector;        /**<Interrupt vector.*/
};


//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------


} // namespace codaObject

#endif /* _vxTIInterruptService_hxx */