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/*$$HEADER*/
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/*                    H E A D E R   I N F O R M A T I O N                     */
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/******************************************************************************/
 
// Project Name                   : OpenRISC Debug Proxy
// File Name                      : linux_usb_driver_calls.c
// Prepared By                    : jb
// Project Start                  : 2008-10-01
 
/*$$COPYRIGHT NOTICE*/
/******************************************************************************/
/*                                                                            */
/*                      C O P Y R I G H T   N O T I C E                       */
/*                                                                            */
/******************************************************************************/
/*
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; 
  version 2.1 of the License, a copy of which is available from
  http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
 
/*$$DESCRIPTION*/
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/*                           D E S C R I P T I O N                            */
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//
// Some generically named functions for interfacing to the JTAG driver 
// functions, making the code calling these platform independant. The correct 
// driver calling file (either Cygwin or Linux driver) is included at compile 
// time.
// Also included in this file is the USB-JTAG chip initialisation function.
//
 
 
/*$$CHANGE HISTORY*/
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/*                         C H A N G E  H I S T O R Y                         */
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/******************************************************************************/
 
// Date		Version	Description
//------------------------------------------------------------------------
// 081101		First revision           			jb
 
#include <stdio.h>
 
#include "WinTypes.h"
 
#include "usb_driver_calls.h"
 
#include "usb_functions.h"
#include "or_debug_proxy.h"
 
#include "FT2232cMpsseJtag.h"
 
 
static FT2232cMpsseJtag *pFT2232cMpsseJtag = NULL;
 
// Global USB JTAG device handle
FTC_HANDLE ftHandle;
 
// Write data to external device:
//FTC_STATUS FT2232cMpsseJtag::JTAG_WriteDataToExternalDevice(FTC_HANDLE ftHandle, BOOL bInstructionTestData, DWORD dwNumBitsToWrite,
 
FTC_STATUS
FT2232_USB_JTAG_WriteDataToExternalDevice(
					  //FTC_HANDLE ftHandle, 
					  BOOL bInstructionTestData, 
					  DWORD dwNumBitsToWrite, 
					  PWriteDataByteBuffer pWriteDataBuffer, 
					  DWORD dwNumBytesToWrite, 
					  DWORD dwTapControllerState)
{
  // Call the driver from the libary compiled in Linux
  return pFT2232cMpsseJtag->JTAG_WriteDataToExternalDevice(
							   ftHandle, 
							   bInstructionTestData, 
							   dwNumBitsToWrite, 
							   pWriteDataBuffer, 
							   dwNumBytesToWrite, 
							   dwTapControllerState);
}
 
 
// Read data from external device
FTC_STATUS 
FT2232_USB_JTAG_ReadDataFromExternalDevice(
					   //FTC_HANDLE ftHandle, 
					    BOOL bInstructionTestData, 
					    DWORD dwNumBitsToRead, 
					    PReadDataByteBuffer pReadDataBuffer, 
					    LPDWORD lpdwNumBytesReturned,
					    DWORD dwTapControllerState)
 
{
  return pFT2232cMpsseJtag->JTAG_ReadDataFromExternalDevice(
							    ftHandle, 
							    bInstructionTestData, 
							    dwNumBitsToRead, 
							    pReadDataBuffer, 
							    lpdwNumBytesReturned,
							    dwTapControllerState);
 
}
 
 
 
 
 
 
// Write Read
FTC_STATUS 
FT2232_USB_JTAG_WriteReadDataToFromExternalDevice(
						  //FTC_HANDLE ftHandle, 
						  BOOL bInstructionTestData, 
						  DWORD dwNumBitsToWriteRead, 
						  PWriteDataByteBuffer pWriteDataBuffer, 
						  DWORD dwNumBytesToWrite, 
						  PReadDataByteBuffer pReadDataBuffer, 
						  LPDWORD lpdwNumBytesReturned,
						  DWORD dwTapControllerState)
{
 
 return pFT2232cMpsseJtag->JTAG_WriteReadDataToFromExternalDevice(
								  ftHandle, 
								  bInstructionTestData, 
								  dwNumBitsToWriteRead,
								  pWriteDataBuffer, 
								  dwNumBytesToWrite,
								  pReadDataBuffer, 
								  lpdwNumBytesReturned,
								  dwTapControllerState);
 
}
 
 
 
// Close device
FTC_STATUS 
FT2232_USB_JTAG_CloseDevice()
{
  return pFT2232cMpsseJtag->JTAG_CloseDevice(ftHandle);
}
 
 
void reinit_usb_jtag(void)
{
  FTC_STATUS Status = FTC_SUCCESS;
  if (DEBUG_USB_DRVR_FUNCS) printf("linux_usb_driver_calls: reset_usb_jtag() - ");
  Status = pFT2232cMpsseJtag->JTAG_InitDevice(ftHandle, 0);  
  if (DEBUG_USB_DRVR_FUNCS) printf("return Status: %d\n", (int) Status);
}
 
// Set clock frequency
// Frequency = 12Mhz/((1+divisor)*2), 
// divisor=1000 => Freq=5995Hz~=6kHz, divisor=500=>Freq=12kHz
#define USB_JTAG_CLK_DIVIDER 0
 
int init_usb_jtag()
{
  FTC_STATUS Status = FTC_SUCCESS;
  //char szDeviceName[100];
  //char szDeviceName[] = "Dual RS232 A"; // Original, unmodified FT2232 device name
  // We now open the device by its name
  //char szDeviceName[] = "ORSoC OpenRISC debug cable A\0"; // ORSoC debug cable UART A name
  char* szDeviceName;
  DWORD dwLocationID = 0;
  DWORD dwClockFrequencyHz = 0;
  FTC_INPUT_OUTPUT_PINS LowInputOutputPinsData;
  FTC_INPUT_OUTPUT_PINS HighInputOutputPinsData;
  FTC_LOW_HIGH_PINS LowPinsInputData;
  FTC_LOW_HIGH_PINS HighPinsInputData;
 
  //char szDllVersion[10];
 
  // Has been changed to hardcode load device named "ORSoC OpenRISC debug cable A"; - jb 090301
#define MAX_DEVICES             5
  char *  pcBufRead = NULL;
  char *  pcBufLD[MAX_DEVICES + 1];
  char    cBufLD[MAX_DEVICES][64];
  FT_STATUS       ftStatus;
  int     iNumDevs = 0;
  int     i;
 
  for(i = 0; i < MAX_DEVICES; i++) {
	  pcBufLD[i] = cBufLD[i];
  }
  pcBufLD[MAX_DEVICES] = NULL;
 
  ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_DESCRIPTION);
 
  if(ftStatus != FT_OK) {
	  printf("Error: FT_ListDevices(%d)\n", (int) ftStatus);
	  return 1;
  }
#if DEBUG_USB_DRVR_FUNCS==1
  for(i = 0; ( (i <MAX_DEVICES) && (i < iNumDevs) ); i++) {
	  printf("Device %d Description - %s\n", i, cBufLD[i]);
  }
#endif
 
  if (iNumDevs==2)
    szDeviceName = cBufLD[0]; // Should be first device
  else if (iNumDevs==4)
    szDeviceName = cBufLD[1]; // Should be second device
  else
    {
      printf("Unexpected number of FTDI ports %d\n", iNumDevs);
      return 1;
    }
 
  if (Status == FTC_SUCCESS)
    {
 
	    dwLocationID = 0;
 
	    if (Status == FTC_SUCCESS)
	    {
#if DEBUG_USB_DRVR_FUNCS==1
		    printf("JTAG_OpenSpecifiedDevice %s\n", szDeviceName);
#endif
		    Status = pFT2232cMpsseJtag->JTAG_OpenSpecifiedDevice(szDeviceName,dwLocationID, &ftHandle);
#if DEBUG_USB_DRVR_FUNCS==1
		    printf("JTAG_OpenSpecifiedDevice status: %d (%s)\n",(int)Status, EN_Common_Errors[Status]);
#endif
 
	    }
 
 
      // Try initialising and obtaining a handle to a specific device
      if (Status == FTC_SUCCESS)
	{
	  printf("Initialising USB JTAG interface\n");
	  Status = pFT2232cMpsseJtag->JTAG_InitDevice(ftHandle, 0);
 
	  // Set clock frequency
	  // Frequency = 12Mhz/((1+divisor)*2), 
	  // divisor=1000 => Freq=5995Hz~=6kHz, divisor=500=>Freq=12kHz
	  if (DEBUG_USB_DRVR_FUNCS)
	    printf("Setting JTAG clock frequency.  Divisor = %d, TCK ~= %dkHz.\n", USB_JTAG_CLK_DIVIDER, (12000000/((USB_JTAG_CLK_DIVIDER+1)*2))/1000);
	  if (Status == FTC_SUCCESS)
	    Status = pFT2232cMpsseJtag->JTAG_SetClock(ftHandle, USB_JTAG_CLK_DIVIDER, &dwClockFrequencyHz);
 
	  if (Status == FTC_SUCCESS){
 
	    Status = pFT2232cMpsseJtag->JTAG_GetClock(5, &dwClockFrequencyHz);
	  }	    
 
	}
 
      //if (Status == FTC_SUCCESS)
      //  Status = JTAG_SetLoopback(ftHandle, true);	    
      if (Status == FTC_SUCCESS)
	{ 
	  if (DEBUG_USB_DRVR_FUNCS) // Let LED blink
	    {
	      // true=output, false=input
	      LowInputOutputPinsData.bPin1InputOutputState = true;  // ADBUS4
	      LowInputOutputPinsData.bPin2InputOutputState = true;  // ADBUS5
	      LowInputOutputPinsData.bPin3InputOutputState = true;  // ADBUS6
	      LowInputOutputPinsData.bPin4InputOutputState = true;  // ADBUS7
	      LowInputOutputPinsData.bPin1LowHighState = false;     // ADBUS4
	      LowInputOutputPinsData.bPin2LowHighState = false;     // ADBUS5
	      LowInputOutputPinsData.bPin3LowHighState = true;      // ADBUS6
	      LowInputOutputPinsData.bPin4LowHighState = true;      // ADBUS7
 
	      HighInputOutputPinsData.bPin1InputOutputState = true; // ACBUS0 Output
	      HighInputOutputPinsData.bPin2InputOutputState = true; // ACBUS1 Output
	      HighInputOutputPinsData.bPin3InputOutputState = true; // ACBUS2 Output
	      HighInputOutputPinsData.bPin4InputOutputState = true; // ACBUS3 Output
	      HighInputOutputPinsData.bPin1LowHighState = true;     // ACBUS0
	      HighInputOutputPinsData.bPin2LowHighState = true;     // ACBUS1
	      HighInputOutputPinsData.bPin3LowHighState = true;     // ACBUS2  LED RXLEDA A1 OFF 
	      HighInputOutputPinsData.bPin4LowHighState = false;    // ACBUS3  LED TXLEDA A2 ON
 
	      Status = pFT2232cMpsseJtag->JTAG_SetGeneralPurposeInputOutputPins(ftHandle, 
										true, 
										&LowInputOutputPinsData, 
										true, 
										&HighInputOutputPinsData);
 
	      LowInputOutputPinsData.bPin1InputOutputState = true;  // ADBUS4 
	      LowInputOutputPinsData.bPin2InputOutputState = true;  // ADBUS5
	      LowInputOutputPinsData.bPin3InputOutputState = true;  // ADBUS6
	      LowInputOutputPinsData.bPin4InputOutputState = true;  // ADBUS7
	      LowInputOutputPinsData.bPin1LowHighState = false;     // ADBUS4
	      LowInputOutputPinsData.bPin2LowHighState = false;     // ADBUS5
	      LowInputOutputPinsData.bPin3LowHighState = true;      // ADBUS6
	      LowInputOutputPinsData.bPin4LowHighState = true;      // ADBUS7
 
	      HighInputOutputPinsData.bPin1InputOutputState = true; // ACBUS0
	      HighInputOutputPinsData.bPin2InputOutputState = true; // ACBUS1
	      HighInputOutputPinsData.bPin3InputOutputState = true; // ACBUS2
	      HighInputOutputPinsData.bPin4InputOutputState = true; // ACBUS3
	      HighInputOutputPinsData.bPin1LowHighState = true;     // ACBUS0
	      HighInputOutputPinsData.bPin2LowHighState = true;     // ACBUS1
	      HighInputOutputPinsData.bPin3LowHighState = false;    // ACBUS2 LED RXLEDA A1 ON
	      HighInputOutputPinsData.bPin4LowHighState = true;     // ACBUS3 LED TXLEDA A2 OFF
 
	      Status = pFT2232cMpsseJtag->JTAG_SetGeneralPurposeInputOutputPins(ftHandle, 
										true, 
										&LowInputOutputPinsData, 
										true, 
										&HighInputOutputPinsData);
 
	      LowInputOutputPinsData.bPin1InputOutputState = true;  // ADBUS4 - 
	      LowInputOutputPinsData.bPin2InputOutputState = true;  // ADBUS5
	      LowInputOutputPinsData.bPin3InputOutputState = true;  // ADBUS6
	      LowInputOutputPinsData.bPin4InputOutputState = true;  // ADBUS7
	      LowInputOutputPinsData.bPin1LowHighState = false;     // ADBUS4
	      LowInputOutputPinsData.bPin2LowHighState = false;     // ADBUS5
	      LowInputOutputPinsData.bPin3LowHighState = true;      // ADBUS6
	      LowInputOutputPinsData.bPin4LowHighState = true;      // ADBUS7
 
	      HighInputOutputPinsData.bPin1InputOutputState = true; // ACBUS0
	      HighInputOutputPinsData.bPin2InputOutputState = true; // ACBUS1
	      HighInputOutputPinsData.bPin3InputOutputState = true; // ACBUS2
	      HighInputOutputPinsData.bPin4InputOutputState = true; // ACBUS3
	      HighInputOutputPinsData.bPin1LowHighState = true;     // ACBUS0
	      HighInputOutputPinsData.bPin2LowHighState = true;     // ACBUS1
	      HighInputOutputPinsData.bPin3LowHighState = true;     // ACBUS2 LED RXLEDA A1 OFF
	      HighInputOutputPinsData.bPin4LowHighState = true;     // ACBUS3 LED TXLEDA A2 OFF
 
	      Status = pFT2232cMpsseJtag->JTAG_SetGeneralPurposeInputOutputPins(ftHandle, 
										true, 
										&LowInputOutputPinsData, 
										true, 
										&HighInputOutputPinsData);
 
	      LowInputOutputPinsData.bPin1InputOutputState = true;  // ADBUS4 - 
	      LowInputOutputPinsData.bPin2InputOutputState = true;  // ADBUS5
	      LowInputOutputPinsData.bPin3InputOutputState = true;  // ADBUS6
	      LowInputOutputPinsData.bPin4InputOutputState = true;  // ADBUS7
	      LowInputOutputPinsData.bPin1LowHighState = false;     // ADBUS4
	      LowInputOutputPinsData.bPin2LowHighState = false;     // ADBUS5
	      LowInputOutputPinsData.bPin3LowHighState = true;      // ADBUS6
	      LowInputOutputPinsData.bPin4LowHighState = true;      // ADBUS7
 
	      HighInputOutputPinsData.bPin1InputOutputState = true; // ACBUS0
	      HighInputOutputPinsData.bPin2InputOutputState = true; // ACBUS1
	      HighInputOutputPinsData.bPin3InputOutputState = true; // ACBUS2
	      HighInputOutputPinsData.bPin4InputOutputState = true; // ACBUS3
	      HighInputOutputPinsData.bPin1LowHighState = true;     // ACBUS0
	      HighInputOutputPinsData.bPin2LowHighState = true;     // ACBUS1
	      HighInputOutputPinsData.bPin3LowHighState = false;    // ACBUS2 LED RXLEDA A1 ON
	      HighInputOutputPinsData.bPin4LowHighState = false;    // ACBUS3 LED TXLEDA A2 ON
 
	      Status = pFT2232cMpsseJtag->JTAG_SetGeneralPurposeInputOutputPins(ftHandle, 
										true, 
										&LowInputOutputPinsData, 
										true, 
										&HighInputOutputPinsData);
	    }
 
	  // Setup GPIO pins for JTAG
	  LowInputOutputPinsData.bPin1InputOutputState = true; // ADBUS4 - 
	  // set ADBUS4 to output 0 to enable JTAG buffers on Olimex devices
	  LowInputOutputPinsData.bPin2InputOutputState = true; //ADBUS5
	  LowInputOutputPinsData.bPin3InputOutputState = true;
	  LowInputOutputPinsData.bPin4InputOutputState = true;
	  //ADBUS4 = 0 (enable JTAG buffers on Olimex devices)
	  LowInputOutputPinsData.bPin1LowHighState = false; // ADBUS4
	  LowInputOutputPinsData.bPin2LowHighState = false; // ADBUS5
	  LowInputOutputPinsData.bPin3LowHighState = true; // ADBUS6
	  LowInputOutputPinsData.bPin4LowHighState = true; // ADBUS7
 
	  HighInputOutputPinsData.bPin1InputOutputState = true; // ACBUS0
	  HighInputOutputPinsData.bPin2InputOutputState = true; // ACBUS1
	  HighInputOutputPinsData.bPin3InputOutputState = true; // ACBUS2
	  HighInputOutputPinsData.bPin4InputOutputState = true; // ACBUS3
	  HighInputOutputPinsData.bPin1LowHighState = true; // ACBUS0
	  HighInputOutputPinsData.bPin2LowHighState = true; // ACBUS1
	  HighInputOutputPinsData.bPin3LowHighState = false; // ACBUS2 LED RXLEDA A1 ON
	  HighInputOutputPinsData.bPin4LowHighState = true; // ACBUS3
 
	  Status = pFT2232cMpsseJtag->JTAG_SetGeneralPurposeInputOutputPins(ftHandle, 
									    true, 
									    &LowInputOutputPinsData, 
									    true, 
									    &HighInputOutputPinsData);
 
	  if (Status == FTC_SUCCESS)
	    Status = pFT2232cMpsseJtag->JTAG_GetGeneralPurposeInputOutputPins(ftHandle, true, &LowPinsInputData, 
				    true, &HighPinsInputData);
 
	  if (DEBUG_USB_DRVR_FUNCS) 
	    printf("JTAG low gpio pins values: (ADBUS7-ADBUS4):%x%x%x%x\n", 
		   (LowPinsInputData.bPin4LowHighState==true), 
		   (LowPinsInputData.bPin3LowHighState==true),
		   (LowPinsInputData.bPin2LowHighState==true),
		   (LowPinsInputData.bPin1LowHighState==true));
 
	  if (DEBUG_USB_DRVR_FUNCS) 
	    printf("JTAG high gpio pins values: (ACBUS3-ACBUS0): %x%x%x%x\n", 
		   (HighPinsInputData.bPin4LowHighState==true), 
		   (HighPinsInputData.bPin3LowHighState==true),
		   (HighPinsInputData.bPin2LowHighState==true),
		   (HighPinsInputData.bPin1LowHighState==true));
	}	    
    }
 
 
  if (Status == FTC_SUCCESS)
    return 0;
  else
    return 1;	
 
}