hwdrv_apci1032.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     : APCI-1032       | Compiler   : GCC                      |
  | Module name : hwdrv_apci1032.c| Version    : 2.96                     |
  +-------------------------------+---------------------------------------+
  | Project manager: Eric Stolz   | Date       :  02/12/2002              |
  +-------------------------------+---------------------------------------+
  | Description :   Hardware Layer Acces For APCI-1032                    |
  +-----------------------------------------------------------------------+
  |                             UPDATES                                   |
  +----------+-----------+------------------------------------------------+
  |   Date   |   Author  |          Description of updates                |
  +----------+-----------+------------------------------------------------+
  |          |           |                                                |
  |          |           |                                                |
  |          |           |                                                |
  +----------+-----------+------------------------------------------------+
*/

/*
+----------------------------------------------------------------------------+
|                               Included files                               |
+----------------------------------------------------------------------------+
*/
#include "hwdrv_apci1032.h"
#include <linux/delay.h>
//Global variables
 UINT ui_InterruptStatus=0 ;

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI1032_ConfigDigitalInput                      |
|			  (comedi_device *dev,comedi_subdevice *s,               | 
|                      comedi_insn *insn,lsampl_t *data)                     |
+----------------------------------------------------------------------------+
| Task              : Configures the digital input Subdevice                 |
+----------------------------------------------------------------------------+
| Input Parameters  : comedi_device *dev : Driver handle                     |
|                     lsampl_t *data         : Data Pointer contains         |
|                                          configuration parameters as below |
|                                                                            | 
|			  data[0]            : 1 Enable  Digital Input Interrupt | 	
|								   0 Disable Digital Input Interrupt | 
|			  data[1]            : 0 ADDIDATA Interrupt OR LOGIC	 | 
|								 : 1 ADDIDATA Interrupt AND LOGIC    | 
|			  data[2]			 : Interrupt mask for the mode 1	 | 
|			  data[3]			 : Interrupt mask for the mode 2	 |
|																	 |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

INT i_APCI1032_ConfigDigitalInput(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data) 
{
  UINT ui_TmpValue;
  
  ULONG  ul_Command1 = 0; 
  ULONG  ul_Command2 = 0;
  devpriv->tsk_Current=current;
  
  /*******************************/
  /* Set the digital input logic */
  /*******************************/
  if  ( data[0] == ADDIDATA_ENABLE)
     {
     ul_Command1 = ul_Command1 | data[2];
     ul_Command2 = ul_Command2 | data[3];
     outl (ul_Command1 , devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
     outl (ul_Command2 , devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
     if  (data[1] == ADDIDATA_OR)
        {
	outl(0x4 ,devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);
        ui_TmpValue=inl(devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);
        }//if (data[1] == ADDIDATA_OR)
     else
	{
	outl(0x6 ,devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);
	}//else if(data[1] == ADDIDATA_OR)
     }// if( data[0] == ADDIDATA_ENABLE)
  else
     {
     ul_Command1 = ul_Command1 & 0xFFFF0000;
     ul_Command2 = ul_Command2 & 0xFFFF0000;
     outl (ul_Command1 , devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
     outl (ul_Command2 , devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
     outl(0x0 ,devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);
     }//else if  ( data[0] == ADDIDATA_ENABLE)
  
  
  return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI1032_Read1DigitalInput                       |
|			  (comedi_device *dev,comedi_subdevice *s,               |
|                      comedi_insn *insn,lsampl_t *data)                     |
+----------------------------------------------------------------------------+
| Task              : Return the status of the digital input                 |
+----------------------------------------------------------------------------+
| Input Parameters  : comedi_device *dev      : Driver handle                |
|		              UINT ui_Channel : Channel number to read       |
|                     lsampl_t *data          : Data Pointer to read status  |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
INT i_APCI1032_Read1DigitalInput(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data)
{
   UINT ui_TmpValue=0;
   UINT ui_Channel;
   ui_Channel=CR_CHAN(insn->chanspec);
   if  (ui_Channel >= 0 && ui_Channel <=31)
      {
      ui_TmpValue=(UINT) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
      //  since only 1 channel reqd  to bring it to last bit it is rotated 
      //  8 +(chan - 1) times then ANDed with 1 for last bit. 
      *data = (ui_TmpValue >> ui_Channel)&0x1 ;
      }//if(ui_Channel >= 0 && ui_Channel <=31)
   else 
      {
      //comedi_error(dev," \n chan spec wrong\n");
      return -EINVAL;   // "sorry channel spec wrong "
      }//else if(ui_Channel >= 0 && ui_Channel <=31)
  return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI1032_ReadMoreDigitalInput                    |
|			  (comedi_device *dev,comedi_subdevice *s,               |
|                     comedi_insn *insn,lsampl_t *data)                      |
+----------------------------------------------------------------------------+
| Task              : Return the status of the Requested digital inputs      |
+----------------------------------------------------------------------------+
| Input Parameters  : comedi_device *dev      : Driver handle                |
|                     UINT ui_NoOfChannels    : No Of Channels To be Read    |
|                      UINT *data             : Data Pointer to read status  |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

INT i_APCI1032_ReadMoreDigitalInput(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data)
{
   UINT ui_PortValue=data[0];
   UINT ui_Mask=0;
   UINT ui_NoOfChannels;
   
   ui_NoOfChannels=CR_CHAN(insn->chanspec);
   if  (data[1]==0)
      {
      *data=(UINT)inl(devpriv->iobase + APCI1032_DIGITAL_IP );
      switch (ui_NoOfChannels)
	{
	case 2:ui_Mask=3;
               *data=(*data >>(2*ui_PortValue))&ui_Mask; 
               break;
	case 4:ui_Mask=15;
               *data=(*data >>(4*ui_PortValue))&ui_Mask; 
	       break;
	case 8:ui_Mask=255;
	       *data=(*data >>(8*ui_PortValue))&ui_Mask;  
               break;
        case 16:ui_Mask=65535;
               *data=(*data >>(16*ui_PortValue))&ui_Mask;
               break;
        case 31: break;
        default:
	        //comedi_error(dev," \nchan spec wrong\n");
		return -EINVAL;   // "sorry channel spec wrong "  
                break;
        }//switch(ui_NoOfChannels)
      }//if(data[1]==0)
   else
      {
      if  (data[1]==1)
         {
         *data=ui_InterruptStatus;
         }//if(data[1]==1)
      }//else if(data[1]==0)   
   return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : static void v_APCI1032_Interrupt					     |
|					  (int irq , void *d, struct pt_regs *regs)      |
+----------------------------------------------------------------------------+
| Task              : Interrupt handler for the interruptible digital inputs |
+----------------------------------------------------------------------------+
| Input Parameters  : int irq                 : irq number                   |
|                     void *d                 : void pointer                 |
|                     struct pt_regs *regs    : structure pointer            |
+----------------------------------------------------------------------------+
| Output Parameters :	--						     |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                     |
+----------------------------------------------------------------------------+
*/
static VOID v_APCI1032_Interrupt(int irq,void* d, struct pt_regs *regs) 
{
 comedi_device *dev =d; 	
 
 UINT ui_Temp;
 //disable the interrupt
 ui_Temp=inl(devpriv->iobase+APCI1032_DIGITAL_IP_IRQ); 
 outl(ui_Temp& APCI1032_DIGITAL_IP_INTERRUPT_DISABLE ,devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);
 ui_InterruptStatus=inl(devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_STATUS);
 ui_InterruptStatus=ui_InterruptStatus & 0X0000FFFF;
 send_sig(SIGIO,devpriv->tsk_Current,0); // send signal to the sample   
 outl(ui_Temp ,devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);//enable the interrupt
return;
}	  
	  
/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI1032_Reset(comedi_device *dev)               |                                                       |
+----------------------------------------------------------------------------+
| Task              :resets all the registers                                |
+----------------------------------------------------------------------------+
| Input Parameters  : comedi_device *dev
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      :                                                        |
|			                                                         |
+----------------------------------------------------------------------------+
*/
	  
INT i_APCI1032_Reset(comedi_device *dev) 
{
  outl(0x0 ,devpriv->iobase+APCI1032_DIGITAL_IP_IRQ);//disable the interrupts
  inl(devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_STATUS);//Reset the interrupt status register	  
  outl (0x0 , devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_MODE1);//Disable the and/or interrupt
  outl (0x0 , devpriv->iobase+APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
 return 0;
}