--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_core/dma/sys_dma_it.c	Sun Jul 15 04:39:26 2018 +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) */
+