mailbox.c

OMAP1030 处理器的ARM 侧硬件测试代码 OMAP1030 是TI的双核处理器

//===============================================================================
//            TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION           
//                                                                             
//   Property of Texas Instruments 
//   For  Unrestricted  Internal  Use  Only 
//   Unauthorized reproduction and/or distribution is strictly prohibited.  
//   This product is protected under copyright law and trade secret law 
//   as an unpublished work.  
//   Created 2000, (C) Copyright 2000 Texas Instruments.  All rights reserved.
//
//   Description          : ARM to DSP Mailbox
//
//   Project              : OMAP3
//
//===============================================================================

#include <global_types.h>
#include <mapping.h>
#include <mailbox.h>




//---------------------------------------------------------------------
// NAME        : MBOX_MailboxWrite
//               
// DESCRIPTION : Write data to Mailbox registers :
//                 - ARM2DSP1 and ARM2DSP1B if ARM2DSP1_FLAG[0] == 0
//                 - ARM2DSP2 and ARM2DSP2B if ARM2DSP2_FLAG[0] == 0
//               
// SYNOPSYS    : BOOL MBOX_MailboxWrite(Mailbox_Enum_t, UWORD16, UWORD16)
//               
// PARAMETERS  : Mailbox       ARM2DSP1 or ARM2DSP2
//               Data1         data to first register
//               Data2         data to second register
//               
// RETURN VALUE: TRUE if write done successfully, otherwise FALSE
//               
// LIMITATIONS : None
//               
//---------------------------------------------------------------------
BOOL MBOX_MailboxWrite(Mailbox_Enum_t Mailbox, UWORD16 Data1, UWORD16 Data2)
{
  switch (Mailbox)
  {
  case ARM2DSP1 :
    {
      if ( ( REG16(MB_ARM2DSP1_FLAG_REG_ADDR) & MB_ARM2DSP_FLAG_MASK ) == 0x0000 )
	{
	  REG16(MB_ARM2DSP1_REG_ADDR)  = Data1;
	  REG16(MB_ARM2DSP1B_REG_ADDR) = Data2;
	  return(TRUE);
	}
      else
	return(FALSE);
      break;
    }

  case ARM2DSP2 :
    {
      if ( ( REG16(MB_ARM2DSP2_FLAG_REG_ADDR) & MB_ARM2DSP_FLAG_MASK ) == 0x0000 )
	{
	  REG16(MB_ARM2DSP2_REG_ADDR)  = Data1;
	  REG16(MB_ARM2DSP2B_REG_ADDR) = Data2;
	  return(TRUE);
	}
      else
	return(FALSE);
      break;
    }

  default :
    {
      return(FALSE);
      break;
    }
  }
}


//---------------------------------------------------------------------
// NAME        : MBOX_MailboxRead
//               
// DESCRIPTION : Read data from Mailbox registers :
//                 - ARM2DSP1 and ARM2DSP1B
//                 - ARM2DSP2 and ARM2DSP2B
//                 - DSP2ARM1 and DSP2ARM1B
//                 - DSP2ARM2 and DSP2ARM2B
//               
// SYNOPSYS    : void MBOX_MailboxRead(Mailbox_Enum_t, UWORD16 *, UWORD16 *)
//               
// PARAMETERS  : Mailbox       ARM2DSP1, ARM2DSP2, DSP2ARM1 or DSP2ARM2
//               *Ptr1         pointer on data from first register
//               *Ptr2         pointer on data from second register
//               
// RETURN VALUE: None
//               
// LIMITATIONS : None
//               
//---------------------------------------------------------------------
void MBOX_MailboxRead(Mailbox_Enum_t Mailbox, UWORD16 *Ptr1, UWORD16 *Ptr2)
{
  switch (Mailbox)
  {
  case ARM2DSP1 :
    {
      *Ptr1 = REG16(MB_ARM2DSP1_REG_ADDR);
      *Ptr2 = REG16(MB_ARM2DSP1B_REG_ADDR);
      break;
    }

  case ARM2DSP2 :
    {
      *Ptr1 = REG16(MB_ARM2DSP2_REG_ADDR);
      *Ptr2 = REG16(MB_ARM2DSP2B_REG_ADDR);
      break;
    }
    
  case DSP2ARM1 :
    {
      *Ptr1 = REG16(MB_DSP2ARM1_REG_ADDR);
      *Ptr2 = REG16(MB_DSP2ARM1B_REG_ADDR);
      break;
    }

  case DSP2ARM2 :
    {
      *Ptr1 = REG16(MB_DSP2ARM2_REG_ADDR);
      *Ptr2 = REG16(MB_DSP2ARM2B_REG_ADDR);
      break;
    }
    
  default:
    break;
  }
  return;
}


UWORD16 MAILBOX_GetFlag(Mailbox_Enum_t Mailbox)
{
  switch (Mailbox)
  {
    case ARM2DSP1:
    return (MB_ARM2DSP1_FLAG_REG);
    break;

    case ARM2DSP2:
    return (MB_ARM2DSP2_FLAG_REG);
    break;
  }

  return (~0);
}


//---------------------------------------------------------------------
// NAME        : MBOX_MailboxClear
//               
// DESCRIPTION : Clear the interrupt send by the DSP :
//                 - DSP2ARM_INT1B
//                 - DSP2ARM_INT2B
//               
// SYNOPSYS    : BOOL Mailbox_Clear(Mailbox_Enum_t)
//               
// PARAMETERS  : Mailbox       DSP2ARM1 or DSP2ARM2
//               
// RETURN VALUE: None
//               
// LIMITATIONS : None
//               
//---------------------------------------------------------------------
void MBOX_MailboxClear(Mailbox_Enum_t Mailbox)
{
  switch (Mailbox)
  {
  case DSP2ARM1 :
    REG16(MB_DSP2ARM1_REG_ADDR) = 0x0000;
    break;
  case DSP2ARM2 :
    REG16(MB_DSP2ARM2B_REG_ADDR) = 0x0000;
    break;
  default :
    break;
  }
}