path: root/drivers/staging/comedi/drivers/addi-data/addi_eeprom.c

/**
@verbatim

Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.

	ADDI-DATA GmbH
	Dieselstrasse 3
	D-77833 Ottersweier
	Tel: +19(0)7223/9493-0
	Fax: +49(0)7223/9493-92
	http://www.addi-data-com
	info@addi-data.com

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

@endverbatim
*/
/*

  +-----------------------------------------------------------------------+
  | (C) ADDI-DATA GmbH          Dieselstrasse 3      D-77833 Ottersweier  |
  +-----------------------------------------------------------------------+
  | Tel : +49 (0) 7223/9493-0     | email    : info@addi-data.com         |
  | Fax : +49 (0) 7223/9493-92    | 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 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 {
	unsigned char b_Type;
	unsigned short w_Address;
};

struct str_MainHeader {
	unsigned short w_HeaderSize;
	unsigned char b_Nfunctions;
	struct str_Functionality s_Functions[7];
};

struct str_DigitalInputHeader {
	unsigned short w_Nchannel;
	unsigned char b_Interruptible;
	unsigned short w_NinterruptLogic;
};

struct str_DigitalOutputHeader {

	unsigned short w_Nchannel;
};


/* used for timer as well as watchdog */

struct str_TimerDetails {

	unsigned short w_HeaderSize;
	unsigned char b_Resolution;
	unsigned char b_Mode;		/*  in case of Watchdog it is functionality */
	unsigned short w_MinTiming;
	unsigned char b_TimeBase;
};

struct str_TimerMainHeader {


	unsigned short w_Ntimer;
	struct str_TimerDetails s_TimerDetails[4];	/*   supports 4 timers */
};


struct str_AnalogOutputHeader {
	unsigned short w_Nchannel;
	unsigned char b_Resolution;
};

struct str_AnalogInputHeader {
	unsigned short w_Nchannel;
	unsigned short w_MinConvertTiming;
	unsigned short w_MinDelayTiming;
	unsigned char b_HasDma;
	unsigned char b_Resolution;
};


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

int i_EepromReadMainHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, struct comedi_device *dev);

int i_EepromReadDigitalInputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_DigitalInputHeader *s_Header);

int i_EepromReadDigitalOutputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_DigitalOutputHeader *s_Header);

int i_EepromReadTimerHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_TimerMainHeader *s_Header);

int i_EepromReadAnlogOutputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_AnalogOutputHeader *s_Header);

int i_EepromReadAnlogInputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_AnalogInputHeader *s_Header);

		/******************************************/
		/*      Eeprom Specific Functions                         */
		/******************************************/
unsigned short w_EepromReadWord(unsigned short w_PCIBoardEepromAddress, char *pc_PCIChipInformation,
	unsigned short w_EepromStartAddress);
void v_EepromWaitBusy(unsigned short w_PCIBoardEepromAddress);
void v_EepromClock76(unsigned int dw_Address, unsigned int dw_RegisterValue);
void v_EepromWaitBusy(unsigned short w_PCIBoardEepromAddress);
void v_EepromSendCommand76(unsigned int dw_Address, unsigned int dw_EepromCommand,
	unsigned char b_DataLengthInBits);
void v_EepromCs76Read(unsigned int dw_Address, unsigned short w_offset, unsigned short *pw_Value);

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

unsigned short w_EepromReadWord(unsigned short w_PCIBoardEepromAddress, char *pc_PCIChipInformation,
	unsigned short w_EepromStartAddress)
{

	unsigned char b_Counter = 0;

	unsigned char b_ReadByte = 0;

	unsigned char b_ReadLowByte = 0;

	unsigned char b_ReadHighByte = 0;

	unsigned char b_SelectedAddressLow = 0;

	unsigned char b_SelectedAddressHigh = 0;

	unsigned short 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 | (((unsigned short) 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;

}

/*

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

| Function   Name   : void v_EepromWaitBusy                                  |

|			(unsigned short	w_PCIBoardEepromAddress)                    	 |

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

| Task              : Wait the busy flag from PCI controller                 |

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

| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom base address |

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

| Output Parameters : -                                                      |

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

| Return Value      : -                                                      |

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

*/

void v_EepromWaitBusy(unsigned short w_PCIBoardEepromAddress)
{

	unsigned char b_EepromBusy = 0;

	do
	{

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

		/* IMPORTANT */

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

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

		/* An error has been written in the AMCC 5933 book at the page B-13 */

		/* Ex: if you read a byte and look for the busy statusEEPROM=0x80 and   */

		/*      the operator register is AMCC_OP_REG_MCSR+3 */

		/*      unsigned short read  EEPROM=0x8000 andAMCC_OP_REG_MCSR+2                  */

		/*      unsigned int read  EEPROM=0x80000000 and AMCC_OP_REG_MCSR */

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

		b_EepromBusy = inb(w_PCIBoardEepromAddress + 0x3F);
		b_EepromBusy = b_EepromBusy & 0x80;

	} while (b_EepromBusy == 0x80);

}

/*

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

| Function   Name   : void v_EepromClock76(unsigned int dw_Address,                      |

|					   unsigned int dw_RegisterValue)                 			  |

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

| Task              : This function sends the clocking sequence to the EEPROM.    |

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

| Input Parameters  : unsigned int dw_Address : PCI eeprom base address                  |

|		      unsigned int dw_RegisterValue : PCI eeprom register value to write.|

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

| Output Parameters : -                                                           |

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

| Return Value      : -                                                           |

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

*/

void v_EepromClock76(unsigned int dw_Address, unsigned int dw_RegisterValue)
{

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

	/* Set EEPROM clock Low */

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

	outl(dw_RegisterValue & 0x6, dw_Address);

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

	/* Wait 0.1 ms */

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

	udelay(100);

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

	/* Set EEPROM clock High */

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

	outl(dw_RegisterValue | 0x1, dw_Address);

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

	/* Wait 0.1 ms */

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

	udelay(100);

}

/*

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

| Function   Name   : void v_EepromSendCommand76(unsigned int dw_Address,                |

|					   unsigned int   dw_EepromCommand,                		  |

|					   unsigned char    b_DataLengthInBits)                        |

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

| Task              : This function sends a Command to the EEPROM 93C76.          |

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

| Input Parameters  : unsigned int dw_Address : PCI eeprom base address                  |

|		      unsigned int dw_EepromCommand : PCI eeprom command to write.       |

|		      unsigned char  b_DataLengthInBits : PCI eeprom command data length.  |

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

| Output Parameters : -                                                           |

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

| Return Value      : -                                                           |

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

*/

void v_EepromSendCommand76(unsigned int dw_Address, unsigned int dw_EepromCommand,
	unsigned char b_DataLengthInBits)
{

	char c_BitPos = 0;

	unsigned int dw_RegisterValue = 0;

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

	/* Enable EEPROM Chip Select */

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

	dw_RegisterValue = 0x2;

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

	/* Toggle EEPROM's Chip select to get it out of Shift Register Mode */

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

	outl(dw_RegisterValue, dw_Address);

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

	/* Wait 0.1 ms */

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

	udelay(100);

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

	/* Send EEPROM command - one bit at a time */

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

	for (c_BitPos = (b_DataLengthInBits - 1); c_BitPos >= 0; c_BitPos--)
	{

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

		/* Check if current bit is 0 or 1 */

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

		if (dw_EepromCommand & (1 << c_BitPos))
		{

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

			/* Write 1 */

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

			dw_RegisterValue = dw_RegisterValue | 0x4;

		}

		else
		{

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

			/* Write 0 */

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

			dw_RegisterValue = dw_RegisterValue & 0x3;

		}

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

		/* Write the command */

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

		outl(dw_RegisterValue, dw_Address);

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

		/* Wait 0.1 ms */

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

		udelay(100);

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

		/* Trigger the EEPROM clock */

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

		v_EepromClock76(dw_Address, dw_RegisterValue);

	}

}

/*

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

| Function   Name   : void v_EepromCs76Read(unsigned int dw_Address,                     |

|					   unsigned short    w_offset,                      			  |

|					   unsigned short *   pw_Value)                      			  |

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

| Task              : This function read a value from the EEPROM 93C76.           |

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

| Input Parameters  : unsigned int dw_Address : PCI eeprom base address                  |

|		      unsigned short    w_offset : Offset of the address to read             |

|		      unsigned short *   pw_Value : PCI eeprom 16 bit read value.            |

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

| Output Parameters : -                                                           |

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

| Return Value      : -                                                           |

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

*/

void v_EepromCs76Read(unsigned int dw_Address, unsigned short w_offset, unsigned short *pw_Value)
{

        char c_BitPos = 0;

	unsigned int dw_RegisterValue = 0;

	unsigned int dw_RegisterValueRead = 0;

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

	/* Send EEPROM read command and offset to EEPROM */

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

	v_EepromSendCommand76(dw_Address, (EE_READ << 4) | (w_offset / 2),
		EE76_CMD_LEN);

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

	/* Get the last register value */

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

	dw_RegisterValue = (((w_offset / 2) & 0x1) << 2) | 0x2;

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

	/* Set the 16-bit value of 0 */

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

	*pw_Value = 0;

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

	/* Get the 16-bit value */

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

	for (c_BitPos = 0; c_BitPos < 16; c_BitPos++)
	{

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

		/* Trigger the EEPROM clock */

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

		v_EepromClock76(dw_Address, dw_RegisterValue);

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

		/* Get the result bit */

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

		dw_RegisterValueRead = inl(dw_Address);

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

		/* Wait 0.1 ms */

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

		udelay(100);

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

		/* Get bit value and shift into result */

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

		if (dw_RegisterValueRead & 0x8)
		{

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

			/* Read 1 */

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

			*pw_Value = (*pw_Value << 1) | 0x1;

		}

		else
		{

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

			/* Read 0 */

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

			*pw_Value = (*pw_Value << 1);

		}

	}

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

	/* Clear all EEPROM bits */

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

	dw_RegisterValue = 0x0;

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

	/* Toggle EEPROM's Chip select to get it out of Shift Register Mode */

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

	outl(dw_RegisterValue, dw_Address);

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

	/* Wait 0.1 ms */

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

	udelay(100);

}

	/******************************************/
	/*      EEPROM HEADER READ FUNCTIONS      */
	/******************************************/

/*
+----------------------------------------------------------------------------+
| Function Name  : int i_EepromReadMainHeader(unsigned short w_PCIBoardEepromAddress,  |
|				char *	pc_PCIChipInformation,struct comedi_device *dev)    |
+----------------------------------------------------------------------------+
| Task              : Read from eeprom Main Header                           |
+----------------------------------------------------------------------------+
| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      char *pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|			  struct comedi_device *dev		   : comedi device structure |
|											 pointer				 |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : 0							                             |
+----------------------------------------------------------------------------+
*/

int i_EepromReadMainHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, struct comedi_device *dev)
{
	unsigned short w_Temp, i, w_Count = 0;
	unsigned int ui_Temp;
	struct str_MainHeader s_MainHeader;
	struct str_DigitalInputHeader s_DigitalInputHeader;
	struct str_DigitalOutputHeader s_DigitalOutputHeader;
	/* struct str_TimerMainHeader     s_TimerMainHeader,s_WatchdogMainHeader; */
	struct str_AnalogOutputHeader s_AnalogOutputHeader;
	struct str_AnalogInputHeader s_AnalogInputHeader;

	/* Read size */
	s_MainHeader.w_HeaderSize =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + 8);

	/* Read nbr of functionality */
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + 10);
	s_MainHeader.b_Nfunctions = (unsigned char) w_Temp & 0x00FF;

	/* Read functionality details */
	for (i = 0; i < s_MainHeader.b_Nfunctions; i++) {
		/* Read Type */
		w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
			pc_PCIChipInformation, 0x100 + 12 + w_Count);
		s_MainHeader.s_Functions[i].b_Type = (unsigned char) w_Temp & 0x3F;
		w_Count = w_Count + 2;
		/* Read Address */
		s_MainHeader.s_Functions[i].w_Address =
			w_EepromReadWord(w_PCIBoardEepromAddress,
			pc_PCIChipInformation, 0x100 + 12 + w_Count);
		w_Count = w_Count + 2;
	}

	/* Display main header info */
	for (i = 0; i < s_MainHeader.b_Nfunctions; i++) {

		switch (s_MainHeader.s_Functions[i].b_Type) {
		case EEPROM_DIGITALINPUT:
			i_EepromReadDigitalInputHeader(w_PCIBoardEepromAddress,
				pc_PCIChipInformation,
				s_MainHeader.s_Functions[i].w_Address,
				&s_DigitalInputHeader);
			this_board->i_NbrDiChannel =
				s_DigitalInputHeader.w_Nchannel;
			break;

		case EEPROM_DIGITALOUTPUT:
			i_EepromReadDigitalOutputHeader(w_PCIBoardEepromAddress,
				pc_PCIChipInformation,
				s_MainHeader.s_Functions[i].w_Address,
				&s_DigitalOutputHeader);
			this_board->i_NbrDoChannel =
				s_DigitalOutputHeader.w_Nchannel;
			ui_Temp = 0xffffffff;
			this_board->i_DoMaxdata =
				ui_Temp >> (32 - this_board->i_NbrDoChannel);
			break;

		case EEPROM_ANALOGINPUT:
			i_EepromReadAnlogInputHeader(w_PCIBoardEepromAddress,
				pc_PCIChipInformation,
				s_MainHeader.s_Functions[i].w_Address,
				&s_AnalogInputHeader);
			if (!(strcmp(this_board->pc_DriverName, "apci3200")))
				this_board->i_NbrAiChannel =
					s_AnalogInputHeader.w_Nchannel * 4;
			else
				this_board->i_NbrAiChannel =
					s_AnalogInputHeader.w_Nchannel;
			this_board->i_Dma = s_AnalogInputHeader.b_HasDma;
			this_board->ui_MinAcquisitiontimeNs =
				(unsigned int) s_AnalogInputHeader.w_MinConvertTiming *
				1000;
			this_board->ui_MinDelaytimeNs =
				(unsigned int) s_AnalogInputHeader.w_MinDelayTiming *
				1000;
			ui_Temp = 0xffff;
			this_board->i_AiMaxdata =
				ui_Temp >> (16 -
				s_AnalogInputHeader.b_Resolution);
			break;

		case EEPROM_ANALOGOUTPUT:
			i_EepromReadAnlogOutputHeader(w_PCIBoardEepromAddress,
				pc_PCIChipInformation,
				s_MainHeader.s_Functions[i].w_Address,
				&s_AnalogOutputHeader);
			this_board->i_NbrAoChannel =
				s_AnalogOutputHeader.w_Nchannel;
			ui_Temp = 0xffff;
			this_board->i_AoMaxdata =
				ui_Temp >> (16 -
				s_AnalogOutputHeader.b_Resolution);
			break;

		case EEPROM_TIMER:
			this_board->i_Timer = 1;	/* Timer subdevice present */
			break;

		case EEPROM_WATCHDOG:
			this_board->i_Timer = 1;	/* Timer subdevice present */
			break;

		case EEPROM_TIMER_WATCHDOG_COUNTER:
			this_board->i_Timer = 1;	/* Timer subdevice present */
		}
	}

	return 0;
}

/*
+----------------------------------------------------------------------------+
| Function Name  : int i_EepromReadDigitalInputHeader(unsigned short 					 |
|			w_PCIBoardEepromAddress,char *pc_PCIChipInformation,	 |
|			unsigned short w_Address,struct str_DigitalInputHeader *s_Header)		 |
|																	 |
+----------------------------------------------------------------------------+
| Task              : Read Digital Input Header                              |
+----------------------------------------------------------------------------+
| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      char *pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|			 struct str_DigitalInputHeader *s_Header: Digita Input Header   |
|												   Pointer			 |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : 0							                             |
+----------------------------------------------------------------------------+
*/
int i_EepromReadDigitalInputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_DigitalInputHeader *s_Header)
{
	unsigned short w_Temp;

	/*  read nbr of channels */
	s_Header->w_Nchannel =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + w_Address + 6);

	/*  interruptible or not */
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + w_Address + 8);
	s_Header->b_Interruptible = (unsigned char) (w_Temp >> 7) & 0x01;

/* How many interruptible logic */
	s_Header->w_NinterruptLogic =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + w_Address + 10);

	return 0;
}

/*
+----------------------------------------------------------------------------+
| Function Name  : int i_EepromReadDigitalOutputHeader(unsigned short 				 |
|			w_PCIBoardEepromAddress,char *pc_PCIChipInformation,	 |
|			unsigned short w_Address,struct str_DigitalOutputHeader *s_Header)	     |
|																	 |
+----------------------------------------------------------------------------+
| Task              : Read Digital Output Header                             |
+----------------------------------------------------------------------------+
| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      char *pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|			 struct str_DigitalOutputHeader *s_Header: Digital Output Header|
|											   Pointer				 |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : 0							                             |
+----------------------------------------------------------------------------+
*/
int i_EepromReadDigitalOutputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_DigitalOutputHeader *s_Header)
{
/* Read Nbr channels */
	s_Header->w_Nchannel =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + w_Address + 6);
	return 0;
}

/*
+----------------------------------------------------------------------------+
| Function Name  : int i_EepromReadTimerHeader(unsigned short w_PCIBoardEepromAddress, |
|			char *pc_PCIChipInformation,WORD w_Address,				 |
|			struct str_TimerMainHeader *s_Header)							 |
+----------------------------------------------------------------------------+
| Task              : Read Timer or Watchdog Header                          |
+----------------------------------------------------------------------------+
| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      char *pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|			 struct str_TimerMainHeader *s_Header: Timer Header			 |
|											   Pointer				 |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : 0							                             |
+----------------------------------------------------------------------------+
*/
int i_EepromReadTimerHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_TimerMainHeader *s_Header)
{

	unsigned short i, w_Size = 0, w_Temp;

/* Read No of Timer */
	s_Header->w_Ntimer =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + w_Address + 6);
/* Read header size */

	for (i = 0; i < s_Header->w_Ntimer; i++) {
		s_Header->s_TimerDetails[i].w_HeaderSize =
			w_EepromReadWord(w_PCIBoardEepromAddress,
			pc_PCIChipInformation,
			0x100 + w_Address + 8 + w_Size + 0);
		w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
			pc_PCIChipInformation,
			0x100 + w_Address + 8 + w_Size + 2);

		/* Read Resolution */
		s_Header->s_TimerDetails[i].b_Resolution =
			(unsigned char) (w_Temp >> 10) & 0x3F;

		/* Read Mode */
		s_Header->s_TimerDetails[i].b_Mode =
			(unsigned char) (w_Temp >> 4) & 0x3F;

		w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
			pc_PCIChipInformation,
			0x100 + w_Address + 8 + w_Size + 4);

		/* Read MinTiming */
		s_Header->s_TimerDetails[i].w_MinTiming = (w_Temp >> 6) & 0x3FF;

		/* Read Timebase */
		s_Header->s_TimerDetails[i].b_TimeBase = (unsigned char) (w_Temp) & 0x3F;
		w_Size += s_Header->s_TimerDetails[i].w_HeaderSize;
	}

	return 0;
}

/*
+----------------------------------------------------------------------------+
| Function Name  : int i_EepromReadAnlogOutputHeader(unsigned short 					 |
|			w_PCIBoardEepromAddress,char *pc_PCIChipInformation,	 |
|			unsigned short w_Address,str_AnalogOutputHeader *s_Header)         |
+----------------------------------------------------------------------------+
| Task              : Read Nalog Output  Header                              |
+----------------------------------------------------------------------------+
| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      char *pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|			 str_AnalogOutputHeader *s_Header:Anlog Output Header    |
|											   Pointer				 |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : 0							                             |
+----------------------------------------------------------------------------+
*/

int i_EepromReadAnlogOutputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_AnalogOutputHeader *s_Header)
{
	unsigned short w_Temp;
	/*  No of channels for 1st hard component */
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + w_Address + 10);
	s_Header->w_Nchannel = (w_Temp >> 4) & 0x03FF;
	/*  Resolution for 1st hard component */
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + w_Address + 16);
	s_Header->b_Resolution = (unsigned char) (w_Temp >> 8) & 0xFF;
	return 0;
}

/*
+----------------------------------------------------------------------------+
| Function Name  : int i_EepromReadAnlogInputHeader(unsigned short 					 |
|			w_PCIBoardEepromAddress,char *pc_PCIChipInformation,     |
|			unsigned short w_Address,struct str_AnalogInputHeader *s_Header)          |
+----------------------------------------------------------------------------+
| Task              : Read Nalog Output  Header                              |
+----------------------------------------------------------------------------+
| Input Parameters  : unsigned short w_PCIBoardEepromAddress : PCI eeprom address      |
|																	 |
|		      char *pc_PCIChipInformation  : PCI Chip Type.          |
|																	 |
|			 struct str_AnalogInputHeader *s_Header:Anlog Input Header      |
|											   Pointer				 |
+----------------------------------------------------------------------------+
| Output Parameters : -                                                      |
+----------------------------------------------------------------------------+
| Return Value      : 0							                             |
+----------------------------------------------------------------------------+
*/

/* Reads only for ONE  hardware component */
int i_EepromReadAnlogInputHeader(unsigned short w_PCIBoardEepromAddress,
	char *pc_PCIChipInformation, unsigned short w_Address,
	struct str_AnalogInputHeader *s_Header)
{
	unsigned short w_Temp, w_Offset;
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + w_Address + 10);
	s_Header->w_Nchannel = (w_Temp >> 4) & 0x03FF;
	s_Header->w_MinConvertTiming =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + w_Address + 16);
	s_Header->w_MinDelayTiming =
		w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation,
		0x100 + w_Address + 30);
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + w_Address + 20);
	s_Header->b_HasDma = (w_Temp >> 13) & 0x01;	/*  whether dma present or not */

	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress, pc_PCIChipInformation, 0x100 + w_Address + 72);	/*  reading Y */
	w_Temp = w_Temp & 0x00FF;
	if (w_Temp)		/* Y>0 */
	{
		w_Offset = 74 + (2 * w_Temp) + (10 * (1 + (w_Temp / 16)));	/*  offset of first analog input single header */
		w_Offset = w_Offset + 2;	/*  resolution */
	} else			/* Y=0 */
	{
		w_Offset = 74;
		w_Offset = w_Offset + 2;	/*  resolution */
	}

/* read Resolution */
	w_Temp = w_EepromReadWord(w_PCIBoardEepromAddress,
		pc_PCIChipInformation, 0x100 + w_Address + w_Offset);
	s_Header->b_Resolution = w_Temp & 0x001F;	/*  last 5 bits */

	return 0;
}