VmeModule.cpp

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/*
                    GNU GENERAL PUBLIC LICENSE
                       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 Everyone is permitted to copy and distribute verbatim copies
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*/
// #ifndef VMEMODULE_H
// #define VMEMODULE_H

static const char* Copyright= "(C) Copyright Michigan State University 2002, All rights reserved";/*
  \class CVmeModule
  \file CVmeModule.cpp

  Implements a Vme module object. CVmeModules have access to
  memory which is mapped via the mmap(3) system service using 
  the CVME and CVMEptr objects. CVmeModules can write to and read 
  from these registers using poke and peek operations, respectively.

  Author:
     Jason Venema
     NSCL
     Michigan State University
     East Lansing, MI 48824-1321
     mailto: venemaja@msu.edu
*/

#include <config.h>

#include "VmeModule.h"

#ifdef HAVE_WIENERVME_INTERFACE
#include <CVMEInterface.h>
#include <WienerAPI.h>
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
#include <CVMEInterface.h>
#include <WienerUSBVMEInterface.h>
#endif

#include <string>

#ifdef HAVE_STD_NAMESPACE
using namespace std;
#endif

/*

   The array below maps from address space selectors to CVME<UShort_t 
   selectors or, in the caes of WienerVME controllers, the address modifier.
   
*/
static const
#if  defined(HAVE_WIENERVME_INTERFACE) || defined (HAVE_WIENERUSBVME_INTERFACE)
CVMEInterface::AddressMode AmodTable[] = {
   CVMEInterface::A16,
   CVMEInterface::A24,
   CVMEInterface::A24,
   CVMEInterface::A32,
   CVMEInterface::GEO
};
#endif

#ifdef HAVE_SBSVME_INTERFACE
CVME<UShort_t>::VmeSpace AmodTable[] = {
   CVME<UShort_t>::a16d16,
   CVME<UShort_t>::a24d16,
   CVME<UShort_t>::a24d32,
   CVME<UShort_t>::a32d32,
   CVME<UShort_t>::geo
};
#endif
/*
  \fn CVmeModule::CVmeModule(Space space, UInt_t base, UInt_t length)

  Operation type:
     Basic constructor

  Purpose: 
     Contructs an object of type CVmeModule

  \param Space space   - the vme device to which we are mapping
  \param UInt_t base   - the base address of the device
  \param UInt_t length - the length of the mapping (bytes)
  \param int nCrate    - VME crate number.
*/
CVmeModule::CVmeModule(CVmeModule::Space space, UInt_t base, 
                       UInt_t length, int nCrate)
#if defined(HAVE_WIENERVME_INTERFACE) || defined(HAVE_WIENERUSBVME_INTERFACE)
   :  m_nSpace(space),
      m_nBase(base),
      m_nLength(length),
      m_nCrate(nCrate),
      m_pDriver(0)
#endif
{
#if defined(HAVE_WIENERVME_INTERFACE) || defined(HAVE_WIENERUSBVME_INTERFACE)
   m_pDriver = CVMEInterface::Open(AmodTable[space], m_nCrate);
#else
  try {
    switch(space) {
    case a16d16:
      m_CVME = CVME<UShort_t>(CVME<UShort_t>::a16d16, base, length, nCrate);
      break;
    case a24d16:
      m_CVME = CVME<UShort_t>(CVME<UShort_t>::a24d16, base, length, nCrate);
      break;
    case a24d32:
      m_CVME = CVME<UShort_t>(CVME<UShort_t>::a24d32, base, length, nCrate);
      break;
    case a32d32:
      m_CVME = CVME<UShort_t>(CVME<UShort_t>::a32d32, base, length, nCrate);
      break;
    case geo:
      m_CVME =  CVME<UShort_t>(CVME<UShort_t>::geo, base, length);
      break;
    default:
      throw 1;                  // Force the catch below to complain.
    }
  }
  catch(int i) {
    throw string("Invalid address space in CVMEModule constructor");
  }
#endif
}


/*
  \fn CVmeModule::CVmeModule(const CVmeModule& aCVmeModule)

  Operation Type:
     Copy contructor

  Purpose:
     Constructs this by copying the attributes of its parameter

  \param const CVmeModule& aCVmeModule - a CVmeModule from which 
                                         to contrust this
*/
CVmeModule::CVmeModule(const CVmeModule& aCVmeModule)
{
 
   CopyToMe(aCVmeModule);
}

/*
  \fn CVmeModule& CVmeModule::operator=(const CVmeModule& aCVmeModule)
  
  Operation Type:
     operator= Assignment operator

  Purpose:
     Assigns this object the same attributes as another CVmeModule object

  \param const CVmeModule& aCVmeModule - the CVmeModule to copy from
*/
CVmeModule&
CVmeModule::operator=(const CVmeModule& aCVmeModule)
{
  if(this == &aCVmeModule) return *this;
  
  CopyToMe(aCVmeModule);
  return *this;
}

/*
  \fn int CVmeModule::operator== (const CVmeModule& aCVmeModule)

  Operation Type:
     operator== Eqaulity operator

  Purpose:
     Determine if this object is equal to its parameter

  \param const CVmeModule& aCVmeModule - the CVmeModule with which to compare
*/
int
CVmeModule::operator== (const CVmeModule& aCVmeModule)
{
#if defined(HAVE_WIENERVME_INTERFACE) || defined(HAVE_WIENERUSBVME_INTERFACE)
  return ((m_nSpace == aCVmeModule.m_nSpace)      &&
          (m_nBase  == aCVmeModule.m_nBase)       &&
          (m_nLength== aCVmeModule.m_nLength)     &&
          (m_nCrate == aCVmeModule.m_nCrate));
#else
  return (m_CVME == aCVmeModule.m_CVME);
#endif
}

/*
  \fn UChar_t CVmeModule::peekb(UInt_t offset=0)

  Operation Type:
     Accessor

  Purpose:
     Reads byte from m_CVME at current offset + offset, which is
     defaulted to 0. Throws an exception if the read is out of bounds.

  \param UInt_t offset - the offset from which to read (or the current offset
                         if not specified.
*/
UChar_t
CVmeModule::peekb(UInt_t offset)
{
#ifdef HAVE_WIENERVME_INTERFACE
   UChar_t byte;
   WienerVMEInterface::ReadBytes(m_pDriver,
                                 m_nBase + offset,
                                 &byte, 1);
   return byte;
#endif
#ifdef  HAVE_WIENERUSBVME_INTERFACE
   UChar_t byte;
   WienerUSBVMEInterface::ReadBytes(m_pDriver,
                                   m_nBase + offset,
                                   &byte, 1);
   return byte;
#endif
#ifdef HAVE_VME_MAPPING
   return (UChar_t)((m_CVME.asChar())[offset]);
#endif
}

/*
  \fn UShort_t CVmeModule::peekw(UInt_t offset=0)

  Operation Type:
     Accessor

  Purpose:
     Reads word from m_CVME at current offset + offset, which is
     defaulted to 0. Throws an exception if the read is out of bounds.

  \param UInt_t offset - the offset from which to read (or current offset
                         if unspecified.
*/
UShort_t
CVmeModule::peekw(UInt_t offset)
{
#ifdef HAVE_WIENERVME_INTERFACE
   UShort_t word;
   WienerVMEInterface::ReadWords(m_pDriver, 
                                 m_nBase + offset * sizeof(UShort_t), 
                                 &word, 1);
   return word;
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
   UShort_t word;
   WienerUSBVMEInterface::ReadWords(m_pDriver,
                                    m_nBase + offset * sizeof(UShort_t),
                                    &word, 1);
   return word;
#endif

#ifdef HAVE_VME_MAPPING
   volatile UShort_t* c = (m_CVME.asShort());
   return (UShort_t)(c[offset]);
#endif
}

/*
  \fn ULong_t CVmeModule::peekl(UInt_t offset=0)

  Operation Type:
     Accessor

  Purpose:
     Reads longword from m_CVME at current offset + offset, which is
     defaulted to 0. Throws an exception if the read is out of bounds.

  \param UInt_t offset - the offset from which to read (reads from current
                         offset if this is unspecified).
*/
ULong_t
CVmeModule::peekl(UInt_t offset)
{
#ifdef HAVE_WIENERVME_INTERFACE
   ULong_t lword;
   WienerVMEInterface::ReadLongs(m_pDriver, 
                                 m_nBase + offset * sizeof(UInt_t),
                                 &lword, 1);
   return lword;
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
   ULong_t lword;
   WienerUSBVMEInterface::ReadLongs(m_pDriver,
                                    m_nBase + offset * sizeof(UInt_t),
                                    &lword, 1);
   return lword;
#endif

#ifdef HAVE_VME_MAPPING
   return (ULong_t)((m_CVME.asLong())[offset]);
#endif
}

/*
  \fn void CVmeModule::pokeb(UChar_t byte, UInt_t nOffset)

  Operation Type:
     Mutator

  Purpose:
     Writes the specified byte to the specified offset in the module.
     Throws an exception if the specified offset is out of range.

  \param UChar_t byte  - the byte to write into the memory map
         UInt_t offset - the offset at which to write the byte.
*/
void
CVmeModule::pokeb(UChar_t byte, UInt_t nOffset)
{
#ifdef HAVE_WIENERVME_INTERFACE
   WienerVMEInterface::WriteBytes(m_pDriver, m_nBase + nOffset,
                        &byte, 1);
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
   WienerUSBVMEInterface::WriteBytes(m_pDriver, m_nBase + nOffset,
                                     &byte, 1);
#endif

#ifdef HAVE_VME_MAPPING
    (m_CVME.asChar())[nOffset] = byte;
#endif
}

/*
  \fn void CVmeModule::pokew(UShort_t word, UInt_t nOffset)

  Operation Type:
     Mutator

  Purpose:
     Writes the specified word to the specified offset in the module.
     Throws an exception if the specified offset is out of range.

  \param UChar_t word  - the word to write into the memory map
         UInt_t offset - the offset at which to write the word.
*/
void
CVmeModule::pokew(UShort_t word, UInt_t nOffset)
{
#ifdef HAVE_WIENERVME_INTERFACE
   WienerVMEInterface::WriteWords(m_pDriver, 
                                  m_nBase + nOffset*sizeof(UShort_t),
                                  &word, 1);
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
   WienerUSBVMEInterface::WriteWords(m_pDriver,
                                     m_nBase + nOffset*sizeof(UShort_t),
                                     &word, 1);
#endif

#ifdef HAVE_VME_MAPPING
    (m_CVME.asShort())[nOffset] = word;
#endif
}

/*
  \fn void CVmeModule::pokel(UChar_t lword, UInt_t nOffset)

  Operation Type:
     Mutator

  Purpose:
     Writes the specified long word to the specified offset in the module.
     Throws an exception if the specified offset is out of range.

  \param UChar_t long word  - the long word to write into the memory map
         UInt_t offset - the offset at which to write the long word.
*/
void
CVmeModule::pokel(ULong_t lword, UInt_t nOffset)
{
#ifdef HAVE_WIENERVME_INTERFACE
   WienerVMEInterface::WriteLongs(m_pDriver, 
                                  m_nBase + nOffset * sizeof(ULong_t),
                                 &lword, 1);
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
   WienerUSBVMEInterface::WriteLongs(m_pDriver,
                                     m_nBase + nOffset * sizeof(ULong_t),
                                     &lword, 1);
#endif

#ifdef HAVE_VME_MAPPING
   (m_CVME.asLong())[nOffset] = lword;
#endif 
}
void
CVmeModule::CopyToMe(const CVmeModule& rModule)
{
#if defined(HAVE_WIENERVME_INTERFACE) || defined(HAVE_WIENERUSBVME_INTERFACE)
   m_nSpace = rModule.m_nSpace;
   m_nBase  = rModule.m_nBase;
   m_nLength= rModule.m_nLength;
   m_nCrate = rModule.m_nCrate;
   m_pDriver= (rModule.m_pDriver);
#endif
#ifdef HAVE_VME_MAPPING
  m_CVME = rModule.m_CVME;
#endif
}


UInt_t
CVmeModule::readl(void* pBuffer, UInt_t nOffset, size_t longs)
{
#ifdef HAVE_VME_MAPPING
  ULong_t* pSource = (ULong_t*)m_CVME.asLong() + nOffset;
  ULong_t* pDest   = (ULong_t*)pBuffer;
  for(UInt_t i =0; i < longs; i++) { // memcpy is not ensured to be long transfers.
    *pDest++ = *pSource++;
  }
  return longs;
#endif

#ifdef HAVE_WIENERVME_INTERFACE
  return WienerVMEInterface::ReadLongs(m_pDriver,
                                       m_nBase + nOffset*sizeof(ULong_t),
                                       pBuffer, longs);
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
  return WienerUSBVMEInterface::ReadLongs(m_pDriver,
                                          m_nBase + nOffset*sizeof(ULong_t),
                                          pBuffer, longs);
#endif

}

UInt_t
CVmeModule::readw(void* pBuffer, UInt_t nOffset, size_t words)
{
#ifdef HAVE_VME_MAPPING
  UShort_t* pSource = (UShort_t*)m_CVME.asShort() + nOffset;
  UShort_t* pDest   = (UShort_t*)pBuffer;
  for(UInt_t i =0; i < words; i++) { // memcpy is not ensured to be word transfers.
    *pDest++ = *pSource++;
  }
  return words;
#endif
#ifdef HAVE_WIENERVME_INTERFACE
  return WienerVMEInterface::ReadWords(m_pDriver,
                                       m_nBase + nOffset*sizeof(UShort_t),
                                       pBuffer, words);
#endif
#ifdef HAVE_WIENERUSBVME_INTERFACE
  return WienerUSBVMEInterface::ReadWords(m_pDriver,
                                          m_nBase + nOffset*sizeof(UShort_t),
                                          pBuffer, words);
#endif
}

UInt_t
CVmeModule::readb(void* pBuffer, UInt_t nOffset, size_t bytes)
{
#ifdef HAVE_VME_MAPPING
  UChar_t* pSource = (UChar_t*)m_CVME.asChar() + nOffset;
  UChar_t* pDest   = (UChar_t*)pBuffer;
  for(UInt_t i =0; i < bytes; i++) { // memcpy is not ensured to be long transfers.
    *pDest++ = *pSource++;
  }
  return bytes;
#endif
#ifdef HAVE_WIENERVME_INTERFACE
  return WienerVMEInterface::ReadBytes(m_pDriver,
                                       m_nBase + nOffset,
                                       pBuffer, bytes);
#endif

#ifdef HAVE_WIENERUSBVME_INTERFACE
  return WienerUSBVMEInterface::ReadBytes(m_pDriver,
                                          m_nBase + nOffset,
                                          pBuffer, bytes);
#endif


}



// #endif

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