#include <string.h>

#include "std.h"
#include "sysconf.h"
#include "snds.h"
#include "isr.h"
#include "mac.h"

//下面是為協議棧的存在而添加的
#include "netif.h"
#include "eth4510if.h"

#include    "OS_CPU.h"
/*
#include <stdarg.h>
#include <stdio.h>
#include <ctype.h>


#include "uart.h"
#include "pollio.h"
#include "timer.h"
#include "memory.h"
#include "iic.h"
*/


sFrameDescriptor RxFDBaseAddr[MaxRxFrameDescriptors];   // Tx Frame Descriptor
sMACFrame RxFBABaseAddr[MaxRxFrameData];		// Tx Frame Buffer

sFrameDescriptor TxFDBaseAddr[MaxTxFrameDescriptors];   // Rx Frame Descriptor
sMACFrame TxFBABaseAddr[MaxTxFrameData];		// Rx Frame Buffer

// Global variables  used for MAC driver
volatile U32 gMacCon = FullDup ;
volatile U32 gMacTxCon = EnComp ;
volatile U32 gMacRxCon = RxEn | StripCRC ; 
volatile U32 gBdmaTxCon = BTxBRST | BTxMSL110 | BTxSTSKO ;

volatile U32 gBdmaRxCon = BRxDIE | BRxEn | BRxLittle | BRxMAINC | BRxBRST | \
                          BRxNLIE | BRxNOIE | BRxSTSKO ;
volatile U32 gCamCon = CompEn | BroadAcc | GroupAcc;

volatile U32 gDuplexValue = 0 ;

volatile U32 gCTxFDPtr, gWTxFDPtr ;
volatile U32 gCRxFDPtr, gPreviousFdp=0 ;
volatile U32 gCam0_Addr0 = 0 , gCam0_Addr1 = 0  ;
volatile U8 MyMacSrcAddr[6] ;
volatile int WatchDogTime = 0 ;
volatile int gErrorPacketCnt =0 ;
volatile int BdmaRxDoneFlagForLoopBackCheck = 0 ;
volatile int MacTxDoneFlagForLoopBackCheck = 0 ;

// Global variable structure for store status
pMACTxStatus gsMacTxStatus = {0,0,0,0,0,0,0,0,0,0,0} ;
pMACRxStatus gsMacRxStatus = {0,0,0,0,0,0,0,0,0} ;
pBDMATxStatus gsBdmaTxStatus = {0,0,0} ;
pBDMARxStatus gsBdmaRxStatus = {0,0,0,0,0} ;




//網絡初始化
void LanInitialize(void)
{
  //配置物理收發設備
	ResetPhyChip() ;

  //獲取MAC層網卡硬件物理地址
	GetMyMacAddr() ;

	// Initialize MAC and BDMA controller
	MacInitialize() ;
}

/*
 * void MacInitialize(void)
 * Initialize MAC and BDMA Controller
 */
void MacInitialize(void)
{

	/*-----------------------------------------------------------------*
	 * 1. Disable MAC and BDMA interrupts.                             *
	 *-----------------------------------------------------------------*/
	Disable_Int(nMAC_RX_INT) ;     // Disable MAC Rx Interrupt
	Disable_Int(nMAC_TX_INT) ;     // Disable MAC Tx Interrupt
	Disable_Int(nBDMA_RX_INT) ;    // Disable BDMA Rx Interrupt
	Disable_Int(nBDMA_TX_INT) ;    // Disable BDMA Tx Interrupt

	/*-----------------------------------------------------------------*
	 * 2. BDMA and MAC interrupt vector setup.                         * 
	 *-----------------------------------------------------------------*/
	SysSetInterrupt(nMAC_RX_INT, MAC_Rx_isr) ;
	SysSetInterrupt(nMAC_TX_INT, MAC_Tx_isr) ;
	SysSetInterrupt(nBDMA_RX_INT, BDMA_Rx_isr) ; 
	SysSetInterrupt(nBDMA_TX_INT, BDMA_Tx_isr) ;


	/*-----------------------------------------------------------------*
 	 * 3. Set the initial condition of the BDMA, and MAC               * 
 	 *-----------------------------------------------------------------*/
	BDMARXCON = BRxRS ;             // Reset BDMAC Receiver
	BDMATXCON = BTxRS ;             // Reset BDMAC Transceiver
	MACCON = SwReset ;
	BDMARXLSZ = MaxRxFrameSize+40 ;    // 1520
	MACCON = gMacCon ;

	/*-----------------------------------------------------------------*
 	 * 4. Set the BDMA Tx/Rx Frame Descriptor                          *
 	 *-----------------------------------------------------------------*/
	TxFDInitialize() ;
	RxFDInitialize() ;

	/*-----------------------------------------------------------------*
 	 * 5. Set the CAM Control register and the MAC address value       *
 	 *-----------------------------------------------------------------*/
 	// CAM0 register of CAM registers : 0x9100~0x9103, 0x9104, 0x9105
        CAM_Reg(0) =  gCam0_Addr0;
        CAM_Reg(1) =  gCam0_Addr1;

	// CAM Enable Register(CAMEN)
	CAMEN = 0x0001 ;
	CAMCON = gCamCon ;

	/*-----------------------------------------------------------------*
	 * 6. Enable interrupt BDMA Rx and MAC Tx interrupt.               *
	 *-----------------------------------------------------------------*/
	Enable_Int(nBDMA_RX_INT); 
	Enable_Int(nMAC_TX_INT);
	//Enable_Int(nMAC_RX_INT);

	/*-----------------------------------------------------------------*
 	 * 7. Configure the BDMA and MAC control registers.                *
 	 *-----------------------------------------------------------------*/
	ReadyMacTx() ;
	ReadyMacRx() ;
}



/*
 * void TxFDInitialize(void) ;
 *           Initialize Tx frame descriptor area-buffers.
 */
void TxFDInitialize(void)
{
	sFrameDescriptor *pFrameDescriptor;
	sFrameDescriptor *pStartFrameDescriptor;
	sFrameDescriptor *pLastFrameDescriptor = NULL;
	U32 FrameDataAddr;
	U32 i;

	// Get Frame descriptor's base address.   
	// +0x4000000 is for setting this area to non-cacheable area. 
	BDMATXPTR = (U32)TxFDBaseAddr + 0x4000000;
	gWTxFDPtr = gCTxFDPtr = BDMATXPTR;

	// Get Transmit buffer base address.
	FrameDataAddr = (U32)TxFBABaseAddr + 0x4000000;

	// Generate linked list.
	pFrameDescriptor = (sFrameDescriptor *) gCTxFDPtr;
	pStartFrameDescriptor = pFrameDescriptor;

	for(i=0; i < MaxTxFrameDescriptors; i++)  {
		if(pLastFrameDescriptor == NULL)
			pLastFrameDescriptor = pFrameDescriptor;
		else  	pLastFrameDescriptor->NextFrameDescriptor = (U32)pFrameDescriptor;

		pFrameDescriptor->FrameDataPtr = 
			(U32)(FrameDataAddr & fOwnership_CPU);
		pFrameDescriptor->Reserved = (U32)0x0;
		pFrameDescriptor->StatusAndFrameLength = (U32)0x0;
		pFrameDescriptor->NextFrameDescriptor = NULL;

		pLastFrameDescriptor = pFrameDescriptor;
		pFrameDescriptor++;
		FrameDataAddr += sizeof(sMACFrame);
	} // end for loop

	// Make Frame descriptor to ring buffer type.     
	pFrameDescriptor--; 
	pFrameDescriptor->NextFrameDescriptor = (U32)pStartFrameDescriptor;
}

/*
 * void RxFDInitialize(void) ;
 *           Initialize Rx frame descriptor area-buffers.
 */
void RxFDInitialize(void)
{
	sFrameDescriptor *pFrameDescriptor;
	sFrameDescriptor *pStartFrameDescriptor;
	sFrameDescriptor *pLastFrameDescriptor = NULL;
	U32 FrameDataAddr;
	U32 i;

	// Get Frame descriptor's base address.  
	// +0x4000000 is for setting this area to non-cacheable area. 
	BDMARXPTR = (U32)RxFDBaseAddr + 0x4000000;
	gCRxFDPtr = BDMARXPTR;
	
	// Get Transmit buffer base address.  
	FrameDataAddr = (U32)RxFBABaseAddr + 0x4000000;

	// Generate linked list. 
	pFrameDescriptor = (sFrameDescriptor *) gCRxFDPtr;
	pStartFrameDescriptor = pFrameDescriptor;
	
	for(i=0; i < MaxRxFrameDescriptors; i++)  {
		if(pLastFrameDescriptor == NULL)
			pLastFrameDescriptor = pFrameDescriptor;
		else  	pLastFrameDescriptor->NextFrameDescriptor = (U32)pFrameDescriptor;

		pFrameDescriptor->FrameDataPtr =
		(U32)(FrameDataAddr | fOwnership_BDMA | 0x4000000 );
		pFrameDescriptor->Reserved = (U32)0x0;
		pFrameDescriptor->StatusAndFrameLength = (U32)0x0;
		pFrameDescriptor->NextFrameDescriptor = NULL;
		
		pLastFrameDescriptor = pFrameDescriptor;
		pFrameDescriptor++;
		FrameDataAddr += sizeof(sMACFrame); 
	} // end for loop
      
	// Make Frame descriptor to ring buffer type.     
	pFrameDescriptor--; 
	pFrameDescriptor->NextFrameDescriptor = (U32)pStartFrameDescriptor;
}



/*
 * Function : ReadyMacTx
 * Description : set Tx Registers related with BDMA & MAC to transmit
 *               packet.
 */
void ReadyMacTx(void)
{
	BDMATXCON = gBdmaTxCon ;
	MACTXCON =  gMacTxCon ;
}

/*
 * Function : ReadyMacRx
 * Description : set Rx Registers related with BDMA & MAC to Receive packet.
 */
void ReadyMacRx(void)
{
	BDMARXCON = gBdmaRxCon ;
	MACRXCON = gMacRxCon ;
}

/*
 * Function : MacTxGo
 * Description : MAC Transfer Start for interactive mode
 */
void MacTxGo(void)
{
	// Enable MAC and BDMA Transfer
	if (!(BDMATXCON & BTxEn))  BDMATXCON |= BTxEn ;
	MACTXCON |= TxEn  ;
}



/*
 * Function : GetMyMacAddr 
 * Description : Get MAC Address From IIC EEPROM
 */
	
void GetMyMacAddr(void)
{
	U8 MacAddr[MAC_ADDR_SIZE];
	U8 TempAddr[MAC_ADDR_SIZE];
	int i;
	
	gCam0_Addr0 = gCam0_Addr1 = 0 ;

	MacAddr[0] = 0x55 ;