addi_eeprom.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 DATA         | Compiler : GCC 			              |
  | Modulname : addi_eeprom.c     | Version  : 2.96                       |
  +-------------------------------+---------------------------------------+
  | Project manager: Eric Stolz   | Date     :  02/12/2002                |
  +-----------------------------------------------------------------------+
  | Description : ADDI EEPROM  Module                                     |
  +-----------------------------------------------------------------------+
  |                             UPDATE'S                                  |
  +-----------------------------------------------------------------------+
  |   Date   |   Author  |          Description of updates                |
  +----------+-----------+------------------------------------------------+
  |          | 		 | 						  |
  |          |           | 						  |
  +----------+-----------+------------------------------------------------+
*/








#define NVCMD_BEGIN_READ 	(0x7 << 5 ) // nvRam begin read command
#define NVCMD_LOAD_LOW   	(0x4 << 5 ) // nvRam load low command
#define NVCMD_LOAD_HIGH  	(0x5 << 5 ) // nvRam load high command
#define EE76_CMD_LEN    	13      	// bits in instructions 
#define EE_READ         	0x0180  	// 01 1000 0000 read instruction

#define	WORD				unsigned short
#define PWORD				unsigned short *
#define PDWORD				unsigned int  *

#ifndef DWORD
#define	DWORD				unsigned int
#endif



#define EEPROM_DIGITALINPUT 			0
#define EEPROM_DIGITALOUTPUT			1
#define EEPROM_ANALOGINPUT				2
#define EEPROM_ANALOGOUTPUT				3
#define EEPROM_TIMER					4
#define EEPROM_WATCHDOG					5			
#define EEPROM_TIMER_WATCHDOG_COUNTER	10

struct str_Functionality
{
  	BYTE b_Type;
  	WORD w_Address;
};


typedef struct 
{
  	WORD w_HeaderSize;
  	BYTE b_Nfunctions;
  	struct str_Functionality s_Functions[7];
}str_MainHeader;



typedef struct
{
 WORD w_Nchannel;
 BYTE b_Interruptible;
 WORD w_NinterruptLogic;
}str_DigitalInputHeader;

typedef struct
{
 WORD w_Nchannel;
}str_DigitalOutputHeader;

// used for timer as well as watchdog

typedef struct
{
  WORD w_HeaderSize;
  BYTE b_Resolution;
  BYTE b_Mode;                // in case of Watchdog it is functionality 
  WORD w_MinTiming;
  BYTE b_TimeBase;
}str_TimerDetails;
typedef struct
{

  WORD w_Ntimer;
  str_TimerDetails s_TimerDetails[4];  //  supports 4 timers
}str_TimerMainHeader;  


typedef struct
{
  WORD w_Nchannel;
  BYTE b_Resolution;
  }str_AnalogOutputHeader ;

typedef struct
{
  WORD w_Nchannel;
  WORD w_MinConvertTiming;
  WORD w_MinDelayTiming;
  BYTE b_HasDma;
  BYTE b_Resolution;
} str_AnalogInputHeader;

		/*****************************************/
 		/*	      Read Header Functions 	 	 */
		/*****************************************/

INT i_EepromReadMainHeader(WORD	w_PCIBoardEepromAddress,PCHAR 	pc_PCIChipInformation,comedi_device *dev);

INT i_EepromReadDigitalInputHeader(WORD w_PCIBoardEepromAddress,PCHAR pc_PCIChipInformation,WORD w_Address,str_DigitalInputHeader *s_Header);

INT i_EepromReadDigitalOutputHeader(WORD w_PCIBoardEepromAddress,PCHAR pc_PCIChipInformation,WORD w_Address,str_DigitalOutputHeader *s_Header);

INT i_EepromReadTimerHeader(WORD w_PCIBoardEepromAddress,PCHAR pc_PCIChipInformation,WORD w_Address,str_TimerMainHeader *s_Header);

INT i_EepromReadAnlogOutputHeader(WORD w_PCIBoardEepromAddress,PCHAR pc_PCIChipInformation,WORD w_Address,str_AnalogOutputHeader *s_Header);

INT i_EepromReadAnlogInputHeader(WORD w_PCIBoardEepromAddress,PCHAR pc_PCIChipInformation,WORD w_Address,str_AnalogInputHeader *s_Header);

		/******************************************/
		/* 	Eeprom Specific Functions		  	  */
		/******************************************/
WORD w_EepromReadWord(WORD	w_PCIBoardEepromAddress,PCHAR 	pc_PCIChipInformation,WORD   w_EepromStartAddress);
VOID v_EepromWaitBusy(WORD	w_PCIBoardEepromAddress);
VOID v_EepromClock76(DWORD dw_Address,DWORD dw_RegisterValue);
VOID v_EepromWaitBusy(WORD	w_PCIBoardEepromAddress);
VOID v_EepromSendCommand76(DWORD dw_Address,DWORD   dw_EepromCommand,BYTE    b_DataLengthInBits);
VOID v_EepromCs76Read(DWORD dw_Address,WORD    w_offset,PWORD   pw_Value);



/*
+----------------------------------------------------------------------------+
| Function   Name   : WORD w_EepromReadWord                                  |
|				(WORD	w_PCIBoardEepromAddress,             		 |
|				 PCHAR 	pc_PCIChipInformation,               		 |
|				 WORD   w_EepromStartAddress)                		 |
+----------------------------------------------------------------------------+
| Task              : Read from eepromn a word                               |
+----------------------------------------------------------------------------+
| Input Parameters  : WORD w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      PCHAR pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|		      WORD w_EepromStartAddress    : Selected eeprom address |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : Read word value from eeprom                            |
+----------------------------------------------------------------------------+
*/

WORD	w_EepromReadWord(WORD	w_PCIBoardEepromAddress,PCHAR 	pc_PCIChipInformation,WORD   w_EepromStartAddress)

{

	BYTE b_Counter = 0;

	BYTE b_ReadByte = 0;

	BYTE b_ReadLowByte = 0;

	BYTE b_ReadHighByte = 0;

	BYTE b_SelectedAddressLow = 0;

	BYTE b_SelectedAddressHigh = 0;

	WORD w_ReadWord = 0;

       


        /**************************/

        /* Test the PCI chip type */

        /**************************/




        if ((!strcmp(pc_PCIChipInformation, "S5920")) || 

            (!strcmp(pc_PCIChipInformation, "S5933")))

        {

		
	   for (b_Counter=0; b_Counter<2; b_Counter++)

	     {

	       b_SelectedAddressLow  = (w_EepromStartAddress + b_Counter) % 256; //Read the low 8 bit part

	       b_SelectedAddressHigh = (w_EepromStartAddress + b_Counter) / 256; //Read the high 8 bit part



	      /************************************/

	      /* Select the load low address mode */

	      /************************************/


             outb(NVCMD_LOAD_LOW,w_PCIBoardEepromAddress + 0x3F);
	     

             
	      /****************/

	      /* Wait on busy */

	      /****************/

	      v_EepromWaitBusy (w_PCIBoardEepromAddress);


	      /************************/

	      /* Load the low address */

	      /************************/


             outb(b_SelectedAddressLow,w_PCIBoardEepromAddress + 0x3E);
	      

     
	      /****************/

	      /* Wait on busy */

	      /****************/

	      v_EepromWaitBusy (w_PCIBoardEepromAddress);



	      /*************************************/

	      /* Select the load high address mode */

	      /*************************************/


             outb(NVCMD_LOAD_HIGH,w_PCIBoardEepromAddress + 0x3F);
	     


	      /****************/

	      /* Wait on busy */

	      /****************/

	      v_EepromWaitBusy (w_PCIBoardEepromAddress);



	      /*************************/

	      /* Load the high address */

	      /*************************/


             outb(b_SelectedAddressHigh,w_PCIBoardEepromAddress +0x3E); 	
	     

 	      /****************/

	      /* Wait on busy */

	      /****************/

	      v_EepromWaitBusy (w_PCIBoardEepromAddress);



	      /************************/

	      /* Select the READ mode */

	      /************************/


             outb(NVCMD_BEGIN_READ,w_PCIBoardEepromAddress + 0x3F);  
	     

	      /****************/

	      /* Wait on busy */

	      /****************/


	      v_EepromWaitBusy (w_PCIBoardEepromAddress);



	      /*****************************/

	      /* Read data into the EEPROM */

	      /*****************************/

              b_ReadByte = inb(w_PCIBoardEepromAddress + 0x3E);  

	     

             
	      /****************/

	      /* Wait on busy */

	      /****************/



	      v_EepromWaitBusy (w_PCIBoardEepromAddress);



	      /*********************************/

	      /* Select the upper address part */

	      /*********************************/



	      if(b_Counter==0)

	         {

	         b_ReadLowByte=b_ReadByte;

	         } // if(b_Counter==0)

	      else

	         {

	         b_ReadHighByte=b_ReadByte;

	         } // if(b_Counter==0)

	    } // for (b_Counter=0; b_Counter<2; b_Counter++)



	   w_ReadWord=(b_ReadLowByte | (((WORD) b_ReadHighByte) * 256));

        
     
           } // end of if ((!strcmp(pc_PCIChipInformation, "S5920")) || (!strcmp(pc_PCIChipInformation, "S5933"))) 

        if (!strcmp(pc_PCIChipInformation, "93C76"))

           {

           /*************************************/

           /* Read 16 bit from the EEPROM 93C76 */

           /*************************************/


         
           v_EepromCs76Read(w_PCIBoardEepromAddress, w_EepromStartAddress, &w_ReadWord);

           }

             
	return (w_ReadWord);

	}







/*

+----------------------------------------------------------------------------+