am_hw_primitive_builder_interrupt.cc

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/* (c) Copyright Motorola 1998-2006, All rights reserved.        
   Motorola Confidential Proprietary
   Contains confidential proprietary information of Motorola, Inc.
   Reverse engineering is prohibited.
   The copyright notice does not imply publication.
  
   DESCRIPTION: 
      File contains functions handling GINT interrupt from DSP. Interrupt routine 
      takes part in VA/VR data transfer between DSP and FDI task.
  
 *************** REVISION HISTORY *********************************************
  
   Date       Author      Reference
   ========   ========    ==========================
   2006-02-09 a19950      CR - LIBhh86762
              port LIBhh30373 to P44

   2005-12-13 w16355      CR - LIBhh59411
              AUL stereo DAC can take up to 160ms to fully power up.

   05-11-29   e42737      LIBhh30827
              Protect against getting an interrupt from DSP when not expecting one
   05-01-11   aja099      Libff52262
              Fixing merge error when LIBff48418 was integrated

   04-12-22   aja099      LIBff48418
              -PANIC:  When playing second prompt.  Reset flag for
               is_va_playback_active in new VST transfer function

   04-11-23   aja099      LIBff38547
                          VST VR Port

   03-06-13   aaa063      LIBdd01040
                          Implementation of VST VR functionality

   04-02-19   w17860      LIBdd76721
              PANIC: When fast forwarding on Voice Record.
              - This occurs when we FF to end. 

   04-02-03   w17860      CR - LIBdd72293
              FT:Panic when VoiceRecord was playing and fast forward was pressed
              - Removed the MCU_DSP_VA_PLAYBACK_OFF from the Interrupt handler
                for VA playback. This is already handled in the audio manager.

   03-08-28   qcf001      CR - LIBdd34394
              Offset was hardcoded for GSM FR, needs to work for AMR.
              This causes FFWD/REW VA bugs.

   03-08-13   w18944      CR - LIBdd27220
              For neptune, always send global data first on recognize

   01-12--2   w18944      CR - LIBbb13452
              Integrate VR LITE 2.0 (no global data)

   02-05-06   baf044      CR - LIBbb31304
              Porting CR LIBbb19762 for LCA.

   02-02-27   arc095      CR - LIBbb19762
              Make AM VR code complaint with both GROM3 and GROM6 DSPs.

   01-08-03   arc095      CR - LIBbb00693
              MCU AM should check for message ID when reading VR model data from DSP

   01-01-10   qcf001      CR - CSGce83048
              Remove Whitecap code to clear interrupt, fixes VR Powerdown

   00-12-21   mtaraba     CSGce82934
              main_comp_hardware.h within engine_audio vob should be removed

   00-09-01   blamers     CR - CSGce61298
              Complete functionality for VA FF/Rew
              - Add an offset parameter for VA messaging

   00-08-09   mtaraba     CR - CSGce55882
              Eliminate file gsm.h from audio manager

   00-05-15   cfarrel     CR - CSGce58264
              Update Audio Manager to use l1_modem_api queue functions for
              CDMA and HAPI_mdi_queue functions for other MAs.

   00-05-08   cfarrel     CR - CSGce57355
              Provide VA/VR interrupt function for RX/TX0
              - added stub called AUDIO_VA_VR_transfer_data for now

   00-05-01   wchoi       CR - csgce56606
              VA/VR Interrupt routine rewritten.
              Added full support for VA/VR.

   00-04-14   hchuang     CR - CSGce54805
              update current prim id to HAPI generic prim id
              - replace sc_prim_ids with hapi_mdi_message_ids

   99-03-29   blamers     PR - CSGce30057
              no tag playback using volume keys
              - Added a global variable used to determine if the complete from the
                DSP is handled. The variable is set when this interrupt handler
                sends a va stop to the DSP without handling it in the AM.

   99-03-23   blamers     CR - CSGce30036
              VR Lockup due to missing global data
              - The stop semaphore was removed and replaced with a volatile BOOL flag.
                If the semaphore is set when the seem has already halted the stop will
                incorrectly occur on the next start.
              - The BOOL flag will be properly set in the initialization function.

   99-03-10   blamers     CR - CSGce29457
              VR Recognize and VA Count
              - Reset the rd and wr pointers when switching between banks to prevent
                rereading a previously read buffer.
              - Write data into the API in a while loop to make sure it is full.
              - Moved Bank enum to this file and created Switch_Banks macro.

   99-02-26   blamers     CR - CSGce28847
              VA/VR Stream Task Improvements
              - Added an initialization function
              - Fixed the VA Playback powerdown

   98-12-21   mkloza      CR - CSGce26100
              VA/VR Interrupt Data Transfer
              - updated file to follow latest FDI/EEPROM
                design requirements

   98-10-02   mkloza      CR - CSGce22795

*/
/************** INCLUDES ******************************************************/
#include <SUAPI/suapi.h>
#include <string.h>
#include <ENGINE_AUDIO/audio_conditional_compile_def.h>
#include <ENGINE_AUDIO/am_hw_primitive_builder_interrupt.h>

#if (AUDIO_DATA_STREAM_CAPABLE == TRUE)
#include <audio/am_va_info.h>
#include <audio/AM_Relay_Layer.H>
#include <ENGINE_AUDIO/am_hw_string_primitive.h>

#include <ENGINE_HAPI/hapi_mdi_queue_map.h>
#include <ENGINE_HAPI/hapi_mdi_queue.h>
#include <ENGINE_HAPI/hapi_mdi_message_ids.h>

#include <ENGINE_SEEM/seem_fdi_type.h>
#include <seem/seem_globals.h>
#include <seem/seem_data_stream_main_task.h>
#include <seem/seem_fdi_internal.h>
#include <audio/am_utils.h>
#include <ENGINE_AUDIO/aud_interface.h>


/************** LOCAL CONSTANTS ***********************************************/

/************** LOCAL STRUCTURES, ENUMS, AND TYPEDEFS *************************/
// BANK enums
enum
{
    BANK_A,
    BANK_B,
    NUM_BANKS
};

extern "C" 
{
void ReadConfirmed(void);
#endif

};


/************** LOCAL MACROS **************************************************/
// DESCRIPTION: This macro toggles between BANK_A and BANK_B
#define Switch_Banks(bank) bank ^= BANK_B

/************** STATIC DECLARATION ********************************************/
AM_VA_VR_INT_INFO am_va_vr_int_info = 
{
    0,                                          // msg_offset
    SEEM_FDI_NO_TRANSFER,                       // data_mode
    (AM_TRANSFER_DATA)MCU_DSP_VA_PLAYBACK_DATA, // data_type
    0,                                          // message_length
    0,                                          // max_transfer_size
    FALSE,                                      // eom
    FALSE                                       // is_va_playback_active
};

BOOL am_va_vr_int_handle_vtag_complete = FALSE;

#if (AUDIO_RAINBOW == TRUE)
extern BOOL dsp_awake;
#endif

/************** LOCAL VARIABLES ***********************************************/
UINT16* const start_seem_bank_ptr[ NUM_BANKS ] = 
{
    SEEM_data_stream_bank_a, SEEM_data_stream_bank_b   
};

UINT16** const seem_bank_wr_ptr[ NUM_BANKS ] = 
{
    &SEEM_data_stream_bank_a_wt_ptr,
    &SEEM_data_stream_bank_b_wt_ptr  
};

UINT16** const seem_bank_rd_ptr[ NUM_BANKS ] = 
{
    &SEEM_data_stream_bank_a_rd_ptr,
    &SEEM_data_stream_bank_b_rd_ptr 
};

// NOTE: In API_RAM we treat both buffers as though they have the same length
const UINT16 seem_bank_size[ NUM_BANKS ] = 
{
    SEEM_DATA_STREAM_BANK_B_SIZE, SEEM_DATA_STREAM_BANK_B_SIZE
};

static UINT8 current_SEEM_bank = BANK_A;

/***********************FUNCTION PROTOTYPES ************************************/
void FinishTransfer();
UINT16 CheckOtherBank(BOOL);
void TransferVAFromSeemToMDI();
void TransferVAFromMDIToSeem();
void TransferModelDataFromSeemToMDI();
void TransferModelDataFromMDIToSeem();
void TransferVAFromRAMToMDI();


/************** FUNCTION DEFINITIONS ******************************************/
/* DESCRIPTION:
       This function is used to setup the read and write pointer when transferring
       data from the API to RAM. This routine also forces the interrupt to read or
       write using bank A first.

   INPUTS:
       none

   OUTPUTS:
       none

   IMPORTANT NOTES:
       none
*/
void AM_HW_Primitive_Builder_interrupt_init(void)
{ 
    //reset global boolean stop
    seem_stop_data_transfer = FALSE;

    current_SEEM_bank = BANK_A;

    //reset read pointers
    *(seem_bank_rd_ptr[BANK_A]) = start_seem_bank_ptr[BANK_A];
    *(seem_bank_rd_ptr[BANK_B]) = start_seem_bank_ptr[BANK_B];
    *(seem_bank_wr_ptr[BANK_A]) = start_seem_bank_ptr[BANK_A];
    *(seem_bank_wr_ptr[BANK_B]) = start_seem_bank_ptr[BANK_B];
}

/* DESCRIPTION:
       Interrupt routine handling data transfer during 
       VA/VR operations.
 
   INPUTS:
       none

   OUTPUTS:
       none

   IMPORTANT NOTES:
       This function must be of "void" type and should not accept any parameters.
       This will allow for the function to be called from "C" code.
*/                            

void GINT_interrupt(void)
    {
#if (AUDIO_DATA_STREAM_CAPABLE == TRUE)

    if( am_va_vr_int_info.data_mode == SEEM_FDI_VA_VR_TRANSFER_API_RAM )
    {
        if(am_va_vr_int_info.data_type == AM_DSP_MCU_VR_MODEL_DATA)
        {
            TransferModelDataFromMDIToSeem();
        }
        else
        {
            TransferVAFromMDIToSeem();
        }
    }
    else if( am_va_vr_int_info.data_mode == SEEM_FDI_VA_VR_TRANSFER_RAM_API )
    {
        if(am_va_vr_int_info.data_type == AM_MCU_DSP_VR_MODEL_DATA)
        {
            TransferModelDataFromSeemToMDI();
        }
        else
        {
            TransferVAFromSeemToMDI();
        }