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Viewing changes to oct612x/octdeviceapi/oct6100api/oct6100_apimi/oct6100_mask_interrupts.c

  • Committer: Bazaar Package Importer
  • Author(s): Mark Purcell
  • Date: 2006-10-24 22:41:01 UTC
  • mfrom: (1.1.7 upstream)
  • Revision ID: james.westby@ubuntu.com-20061024224101-464p4n2jk16n1jrh
Tags: 1:1.2.10.dfsg-2
* bristuff-0.3.0-PRE-1v
* Remove redundant GPL LICENCE text

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oct612x/octdeviceapi/oct6100api/oct6100_apimi/oct6100_mask_interrupts.c
 
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/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*\
 
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File:  oct6100_mask_interrupts.c
 
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    Copyright (c) 2001-2006 Octasic Inc.
 
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Description: 
 
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        This file contains the mask interrupts function.
 
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This file is part of the Octasic OCT6100 GPL API . The OCT6100 GPL API  is 
 
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free software; you can redistribute it and/or modify it under the terms of 
 
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the GNU General Public License as published by the Free Software Foundation; 
 
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either version 2 of the License, or (at your option) any later version.
 
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The OCT6100 GPL API is distributed in the hope that it will be useful, but 
 
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
 
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for more details. 
 
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You should have received a copy of the GNU General Public License 
 
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along with the OCT6100 GPL API; if not, write to the Free Software 
 
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 
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$Octasic_Release: OCT612xAPI-01.00-PR43 $
 
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$Octasic_Revision: 7 $
 
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\*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
 
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/*****************************  INCLUDE FILES  *******************************/
 
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#include "oct6100api/oct6100_apimi.h"
 
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#include "oct6100api/oct6100_apiud.h"
 
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#include "oct6100api/oct6100_errors.h"
 
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#include "oct6100api/oct6100_defines.h"
 
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/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*\
 
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Function:               Oct6100InterruptMask
 
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Description:    The function is used to mask out the interrupt pin of the chip.  
 
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                                This function is used when a deferred procedure call treats the 
 
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                                interrupt (new interrupts must not be generated until the 
 
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                                signaled interrupt is treated).  Which chip is to have its 
 
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                                interrupts masked is determined by the mask structure, 
 
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                                f_pInterruptMask.
 
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-------------------------------------------------------------------------------
 
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|       Argument                |       Description
 
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-------------------------------------------------------------------------------
 
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f_pInterruptMask                Pointer to the interrupt masking structure.
 
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\*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
 
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UINT32 Oct6100InterruptMaskDef(
 
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                                OUT             tPOCT6100_INTERRUPT_MASK f_pInterruptMask )
 
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{
 
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        f_pInterruptMask->ulUserChipIndex = cOCT6100_INVALID_VALUE;
 
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        f_pInterruptMask->pProcessContext = NULL;
 
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        return cOCT6100_ERR_OK;
 
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}
 
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UINT32 Oct6100InterruptMask(
 
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                                IN              tPOCT6100_INTERRUPT_MASK f_pInterruptMask )
 
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{
 
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        tOCT6100_WRITE_PARAMS   WriteParams;
 
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        tOCT6100_READ_PARAMS    ReadParams;
 
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        UINT32  result;
 
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        UINT16  usReadData;
 
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        /* Determine if the chip's interrupt pin is active.*/
 
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        ReadParams.ulReadAddress = 0x210;
 
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        ReadParams.pusReadData = &usReadData;
 
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        ReadParams.pProcessContext = f_pInterruptMask->pProcessContext;
 
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        ReadParams.ulUserChipId = f_pInterruptMask->ulUserChipIndex;
 
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        result = Oct6100UserDriverReadOs( &ReadParams );
 
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        if ( result != cOCT6100_ERR_OK ) 
 
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                return cOCT6100_ERR_INTRPTS_RW_ERROR;
 
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        if ( (usReadData & 0xFFFF) != 0 )
 
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        {
 
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                /* Chip's interrupt pin is active, so mask interrupt pin. */
 
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                ReadParams.ulReadAddress = 0x214;
 
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                result = Oct6100UserDriverReadOs( &ReadParams );
 
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                if ( result != cOCT6100_ERR_OK ) 
 
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                        return cOCT6100_ERR_INTRPTS_RW_ERROR;
 
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                /* Determine if the chip's interrupt pin is active. */
 
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                WriteParams.pProcessContext = f_pInterruptMask->pProcessContext;
 
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                WriteParams.ulUserChipId = f_pInterruptMask->ulUserChipIndex;
 
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                WriteParams.ulWriteAddress = 0x214;
 
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                WriteParams.usWriteData = (UINT16)( (usReadData & 0xC000) | 0x3FFF );
 
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                result = Oct6100UserDriverWriteOs( &WriteParams );
 
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                if ( result != cOCT6100_ERR_OK ) 
 
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                        return cOCT6100_ERR_INTRPTS_RW_ERROR;
 
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                WriteParams.ulWriteAddress = 0x212;
 
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                WriteParams.usWriteData = 0x8000;
 
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                result = Oct6100UserDriverWriteOs( &WriteParams );
 
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                if ( result != cOCT6100_ERR_OK ) 
 
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                        return cOCT6100_ERR_INTRPTS_RW_ERROR;
 
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                return cOCT6100_ERR_OK;
 
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        }
 
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        return cOCT6100_ERR_INTRPTS_NOT_ACTIVE;
 
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}