addi_amcc_s5920.c

最新版comedi的源码

/**
@verbatim

Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module. 
        
        ADDI-DATA GmbH 
        Dieselstrasse 3 
        D-77833 Ottersweier 
        Tel: [phone] 
        Fax: [phone] 
        http://www.addi-data-com 
        [e-mail] 

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

You shoud also find the complete GPL in the COPYING file accompanying this source code.

@endverbatim
*/
/*    
  +-----------------------------------------------------------------------+
  | (C) ADDI-DATA GmbH          Dieselstraße 3       D-77833 Ottersweier  |
  +-----------------------------------------------------------------------+
  | Tel : [phone]     | email    : [e-mail]         |
  | Fax : [phone]    | Internet : http://www.addi-data.com   |
  +-------------------------------+---------------------------------------+
  | Project : ADDI HEADER READ WRITER |     Compiler   : Visual C++       |
  | Module name : S5920.cpp           |     Version    : 6.0              |
  +-------------------------------+---------------------------------------+
  | Author : E. LIBS                      Date : 02/05/2002               |
  +-----------------------------------------------------------------------+
  | Description   : DLL with the S5920 PCI Controller functions           |
  +-----------------------------------------------------------------------+     
  |                             UPDATE'S                                  |
  +-----------------------------------------------------------------------+
  |   Date   |   Author  |          Description of updates                |
  +----------+-----------+------------------------------------------------+
  | 28/08/02 | LIBS Eric | Add return codes each time a function of the   |
  |          |           | Addi Library is called                         |
  +-----------------------------------------------------------------------+
  | 31/07/03 | KRAUTH J. | Changes for the MSX-Box                        |
  +-----------------------------------------------------------------------+
*/


#include "addi_amcc_S5920.h"

/*+----------------------------------------------------------------------------+*/
/*| Function   Name   : INT i_AddiHeaderRW_ReadEeprom                          |*/
/*|                               (INT    i_NbOfWordsToRead,                   |*/ 
/*|                                DWORD dw_PCIBoardEepromAddress,             |*/
/*|                                WORD   w_EepromStartAddress,                |*/
/*|                                PWORD pw_DataRead)                          |*/
/*+----------------------------------------------------------------------------+*/
/*| Task              : Read word from the 5920 eeprom.                        |*/
/*+----------------------------------------------------------------------------+*/
/*| Input Parameters  : INT    i_NbOfWordsToRead : Nbr. of word to read        |*/ 
/*|                     DWORD dw_PCIBoardEepromAddress : Address of the eeprom |*/
/*|                     WORD   w_EepromStartAddress : Eeprom strat address     |*/
/*+----------------------------------------------------------------------------+*/
/*| Output Parameters : PWORD pw_DataRead : Read data                          |*/                                                     
/*+----------------------------------------------------------------------------+*/
/*| Return Value      : -                                                      |*/
/*+----------------------------------------------------------------------------+*/

INT i_AddiHeaderRW_ReadEeprom (INT    i_NbOfWordsToRead,
                               DWORD dw_PCIBoardEepromAddress,
                               WORD   w_EepromStartAddress,
                               PWORD pw_DataRead)
{
   DWORD dw_eeprom_busy=0;    
   INT i_Counter=0;	
   INT i_WordCounter;
   INT i;
   BYTE pb_ReadByte[1];
   BYTE b_ReadLowByte = 0;
   BYTE b_ReadHighByte = 0;
   BYTE b_SelectedAddressLow = 0;
   BYTE b_SelectedAddressHigh = 0;
   WORD w_ReadWord = 0;
   
   for (i_WordCounter = 0;i_WordCounter<i_NbOfWordsToRead;i_WordCounter++)
      {
      do
         {                           
         dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
         dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
         }
      while (dw_eeprom_busy==EEPROM_BUSY);

      for(i_Counter=0;i_Counter<2;i_Counter++)
        {
        b_SelectedAddressLow=(w_EepromStartAddress+i_Counter) % 256; //Read the low 8 bit part
        b_SelectedAddressHigh=(w_EepromStartAddress+i_Counter)/256;  //Read the high 8 bit part

        //Select the load low address mode
       outb (NVCMD_LOAD_LOW, dw_PCIBoardEepromAddress+AMCC_OP_REG_MCSR+3);

        //Wait on busy
        do
        {
            dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
            dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
        }
        while(dw_eeprom_busy==EEPROM_BUSY);

        //Load the low address
        outb(b_SelectedAddressLow, dw_PCIBoardEepromAddress+AMCC_OP_REG_MCSR+2);

        //Wait on busy
        do
        {
             dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
             dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
        }
        while(dw_eeprom_busy== EEPROM_BUSY);

        //Select the load high address mode
        outb(NVCMD_LOAD_HIGH, dw_PCIBoardEepromAddress+AMCC_OP_REG_MCSR+3);

        //Wait on busy
        do
        {
            dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
            dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
        }
        while(dw_eeprom_busy== EEPROM_BUSY);

        //Load the high address
        outb (b_SelectedAddressHigh, dw_PCIBoardEepromAddress+AMCC_OP_REG_MCSR+2);

        //Wait on busy
        do
        {
            dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
            dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
        }
        while(dw_eeprom_busy== EEPROM_BUSY);

        //Select the READ mode
        outb (NVCMD_BEGIN_READ, dw_PCIBoardEepromAddress+AMCC_OP_REG_MCSR+3);

        //Wait on busy
        do
        {
            dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
            dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
        }
        while(dw_eeprom_busy== EEPROM_BUSY);

        //Read data into the EEPROM
        *pb_ReadByte = inb (dw_PCIBoardEepromAddress+AMCC_OP_REG_MCSR+2);

        //Wait on busy
        do
        {
            dw_eeprom_busy = inl (dw_PCIBoardEepromAddress + AMCC_OP_REG_MCSR);
            dw_eeprom_busy=dw_eeprom_busy & EEPROM_BUSY;
        }
        while(dw_eeprom_busy== EEPROM_BUSY);

        //Select the upper address part
        if(i_Counter==0)
        {   b_ReadLowByte=pb_ReadByte[0];
        }else
        {   b_ReadHighByte=pb_ReadByte[0];
        }
                
        //Sleep
        for (i=0; i < 10000; i++);
   
    }
    w_ReadWord=(b_ReadLowByte|( ( (unsigned short) b_ReadHighByte) *256) );
      
    pw_DataRead[i_WordCounter]=w_ReadWord;

    w_EepromStartAddress +=2; // to read the next word	   

   } // for (...) i_NbOfWordsToRead
   return (0);
}