FreeCalypso > hg > tcs211-pirelli
diff chipsetsw/drivers/drv_core/dma/sys_dma_it.c @ 0:509db1a7b7b8
initial import: leo2moko-r1
author | Space Falcon <falcon@ivan.Harhan.ORG> |
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date | Mon, 01 Jun 2015 03:24:05 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/chipsetsw/drivers/drv_core/dma/sys_dma_it.c Mon Jun 01 03:24:05 2015 +0000 @@ -0,0 +1,219 @@ +/* @(#) nom : sys_dma_it.c SID: 1.2 date : 05/23/03 */ +/* Filename: sys_dma_it.c */ +/* Version: 1.2 */ +/****************************************************************************** + * WIRELESS COMMUNICATION SYSTEM DEVELOPMENT + * + * (C) 2002 Texas Instruments France. All rights reserved + * + * Author : Guillaume Leterrier + * Francois Amand + * + * + * Important Note + * -------------- + * + * This S/W is a preliminary version. It contains information on a product + * under development and is issued for evaluation purposes only. Features + * characteristics, data and other information are subject to change. + * + * The S/W is furnished under Non Disclosure Agreement and may be used or + * copied only in accordance with the terms of the agreement. It is an offence + * to copy the software in any way except as specifically set out in the + * agreement. No part of this document may be reproduced or transmitted in any + * form or by any means, electronic or mechanical, including photocopying and + * recording, for any purpose without the express written permission of Texas + * Instruments Inc. + * + ****************************************************************************** + * + * FILE NAME: sys_dma_it.c + * + * + * PURPOSE: Interruption DMA drivers for CALYPSO PLUS. + * + * + * + * FILE REFERENCES: + * + * Name IO Description + * ------------- -- --------------------------------------------- + * + * + * + * EXTERNAL VARIABLES: + * + * Source: + * + * Name Type IO Description + * ------------- --------------- -- ------------------------------ + * + * + * + * EXTERNAL REFERENCES: + * + * Name Description + * ------------------ ------------------------------------------------------- + * + * + * + * ABNORMAL TERMINATION CONDITIONS, ERROR AND WARNING MESSAGES: + * + * + * + * ASSUMPTION, CONSTRAINTS, RESTRICTIONS: + * + * + * + * NOTES: + * + * + * + * REQUIREMENTS/FUNCTIONAL SPECIFICATION REFERENCES: + * + * + * + * + * DEVELOPMENT HISTORY: + * + * Date Name(s) Version Description + * ----------- -------------- ------- ------------------------------------- + * 23-Oct-2002 G.Leterrier 0.0.1 First implementation + * + * ALGORITHM: + * + * + *****************************************************************************/ + +#include "chipset.cfg" + +#if (CHIPSET == 12) + + #include "sys_dma.h" + + + /*****************************************************************************/ + /* global variable definition */ + /***************************************************************************/ + + + /* Array of pointer on call back function with argument SYS_UWORD16. */ + /* This argument is the value of the status IT register of the channel which has generated the IT event. */ + /* The size of the array is defined by the number of DMA channel available on the device */ + + + + T_DMA_CALL_BACK pf_dma_call_back_address[C_DMA_NUMBER_OF_CHANNEL]= + {f_dma_default_call_back_it, + f_dma_default_call_back_it, + f_dma_default_call_back_it, + f_dma_default_call_back_it, + f_dma_default_call_back_it, + f_dma_default_call_back_it, + }; + + + + /****************************************************************************** + * + * FUNCTION NAME:f_dma_interrupt_manager + * The function is called when a DMA interrupt event occurs on the ARM interrupt handler. + * + * ARGUMENT LIST: + * + * Argument Type IO Description + * ---------- ---------- -- ------------------------------------------- + * none + * + * + * RETURN VALUE: none + * + *****************************************************************************/ + void f_dma_interrupt_manager(void) + { + + SYS_UWORD16 d_dma_isr; + SYS_UWORD8 d_dma_index=0; + /* MASK to eliminate interruption from channel allocation to DSP and secure channel allocated to ARM */ + d_dma_isr=C_DMA_ISR_REG & (~C_DMA_CAR_REG) & (~C_DMA_SCR_REG); + + + + /* shift ISR register from channel 0 to channel n in order to determine the channel with interrrupt active*/ + + for (d_dma_index;d_dma_index<C_DMA_NUMBER_OF_CHANNEL;d_dma_index++) /* end condition need to be checked */ + { + if ((d_dma_isr & 0x0001)==1) + { + pf_dma_call_back_address[d_dma_index](F_DMA_GET_CHANNEL_IT_STATUS(d_dma_index)); + } /* JUMP to the call back function with the status register in argument */ + d_dma_isr >>=1; + } + + } + + + /****************************************************************************** + * + * FUNCTION NAME:f_dma_secure_interrupt_manager + * The function is called when a secure DMA interrupt event occurs on the ARM interrupt handler. + * + * ARGUMENT LIST: + * + * Argument Type IO Description + * ---------- ---------- -- ------------------------------------------- + * none + * + * + * RETURN VALUE: none + * + *****************************************************************************/ + void f_dma_secure_interrupt_manager(void) + { + + SYS_UWORD16 d_dma_isr; + SYS_UWORD8 d_dma_index=0; + /* MASK to eliminate interruption from channel allocation to DSP and non-secure channel allocated to ARM */ + d_dma_isr=C_DMA_ISR_REG & (~C_DMA_CAR_REG) & (C_DMA_SCR_REG); + + /* shift ISR register from channel 0 to channel n in order to determine the channel with interrrupt active*/ + + for (d_dma_index;d_dma_index<C_DMA_NUMBER_OF_CHANNEL;d_dma_index++) /* end condition need to be checked */ + { + if ((d_dma_isr & 0x0001)==1) + { + pf_dma_call_back_address[d_dma_index](F_DMA_GET_CHANNEL_IT_STATUS(d_dma_index)); + } /* JUMP to the call back function with the status register in argument */ + d_dma_isr >>=1; + } + + } + + + /****************************************************************************** + * + * FUNCTION NAME:f_dma_default_call_back_it + * The address of that function will be called by default + * by the DMA interrupt handler, if no call-back function has been defined yet on this channel + * + * ARGUMENT LIST: + * + * Argument Type IO Description + * ---------- ---------- -- ------------------------------------------- + * d_dma_channel_status_it SYS_UWORD16 I contains a default IT status of the channel from which the event occurs. + * + * + * RETURN VALUE: none + * + *****************************************************************************/ + void f_dma_default_call_back_it(SYS_UWORD16 d_dma_channel_it_status) + { + } + + + + + + + #endif /* (CHIPSET == 12) */ +