117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*\
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File: oct6100_mask_interrupts.c
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Copyright (c) 2001-2007 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-PR49 $
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$Octasic_Revision: 8 $
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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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}
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