/************************************************************
 * File name	: Ne2000.h									*
 * By 			: hugang, hgx2000@mail.china.com			*
 ************************************************************/

#ifndef __NE2000_H__
#define __NE2000_H__

#define NE_WORDMODE		1

#define NE_START_PG		0x40     				// First page of TX buffer
#if	NE_WORDMODE
#define NE_STOP_PG		0x7e					// Last page + 1 of RX Ring
#define NE_DCRVAL		0x49
#else
#define NE_STOP_PG		0x5f
#define NE_DCRVAL		0x48
#endif

#define TX_PAGES		6       
#define	TX_START_PG		NE_START_PG
#define RX_START_PG		NE_START_PG + TX_PAGES
#define RX_STOP_PG		NE_STOP_PG
#define RX_CURR_PG		RX_START_PG + 1


#define EN_IO_BASE		0x0a000300
#define EN_SHIFT(x)		(*(volatile unsigned char *)(EN_IO_BASE + ((x)<<1)))

#define EN_CR			EN_SHIFT(0x00)			// The command register (for all pages)
#define EN_RESET		EN_SHIFT(0x18)
#define EN_DATAW		(*(volatile unsigned short *)(EN_IO_BASE + ((0x10)<<1)))
#define EN_DATAB		(*(volatile unsigned char  *)(EN_IO_BASE + ((0x10)<<1)))

#define EN_CLDA0		EN_SHIFT(0x01)			// Low byte of current local dma addr
#define EN_CLDA1		EN_SHIFT(0x02)			// High byte of current local dma addr
#define EN_TSR			EN_SHIFT(0x04)			// Transmit status reg
#define EN_NCR			EN_SHIFT(0x05)			// Number of collision reg
#define EN_FIFO			EN_SHIFT(0x06)			// FIFO
#define EN_CRDA0		EN_SHIFT(0x08)			// Low byte of current remote dma address
#define EN_CRDA1		EN_SHIFT(0x09)			// High byte of current remote dma address
#define EN_8019ID0		EN_SHIFT(0x0a)			// 
#define EN_8019ID1		EN_SHIFT(0x0b)			//
#define EN_RSR			EN_SHIFT(0x0c)			// Rx status reg
#define	EN_CNTR0		EN_SHIFT(0x0d)			// Rcv alignment error counter
#define EN_CNTR1		EN_SHIFT(0x0e)			// Rcv CRC error counter
#define EN_CNTR2		EN_SHIFT(0x0f)			// Rcv missed frame error counter

#define EN_PSTART		EN_SHIFT(0x01)			// Starting page of ring bfr
#define EN_PSTOP		EN_SHIFT(0x02)			// Ending page +1 of ring bfr
#define EN_TPSR			EN_SHIFT(0x04)			// Transmit starting page
#define EN_TBCR0		EN_SHIFT(0x05)			// Low byte of tx byte count
#define EN_TBCR1		EN_SHIFT(0x06)			// High byte of tx byte count
#define EN_RSAR0		EN_SHIFT(0x08)			// Low byte of remote start address reg
#define EN_RSAR1		EN_SHIFT(0x09)			// High byte of remote start address reg
#define EN_RBCR0		EN_SHIFT(0x0a)			// Low byte of remote byte count reg
#define EN_RBCR1		EN_SHIFT(0x0b)			// Highe byte of remote byte count reg
#define EN_RCR			EN_SHIFT(0x0c)			// RX configuration reg
#define EN_TCR			EN_SHIFT(0x0d)			// TX configuration reg
#define EN_DCR			EN_SHIFT(0x0e)			// Data configuration reg
#define EN_IMR			EN_SHIFT(0x0f)			// Interrupt mask reg

#define EN_BNRY			EN_SHIFT(0x03)			// Boundary page of ring bfr
#define EN_ISR			EN_SHIFT(0x07)			// Interrupt status reg

#define EN_PAR0			EN_SHIFT(0x01)			// This board's physical enet addr
#define EN_PAR1			EN_SHIFT(0x02)
#define EN_PAR2			EN_SHIFT(0x03)
#define EN_PAR3			EN_SHIFT(0x04)
#define EN_PAR4			EN_SHIFT(0x05)
#define EN_PAR5			EN_SHIFT(0x06)

#define EN_CURR			EN_SHIFT(0x07)			// Current memory page

#define EN_MAR0			EN_SHIFT(0x08)			// Multicast filter mask array
#define EN_MAR1			EN_SHIFT(0x09)
#define EN_MAR2			EN_SHIFT(0x0a)
#define EN_MAR3			EN_SHIFT(0x0b)
#define EN_MAR4			EN_SHIFT(0x0c)
#define EN_MAR5			EN_SHIFT(0x0d)
#define EN_MAR6			EN_SHIFT(0x0e)
#define EN_MAR7			EN_SHIFT(0x0f)

#define EN_9346CR		EN_SHIFT(0x01)
#define EN_BPAGE		EN_SHIFT(0x02)
#define EN_CONFIG0		EN_SHIFT(0x03)
#define EN_CONFIG1		EN_SHIFT(0x04)
#define EN_CONFIG2		EN_SHIFT(0x05)
#define EN_CONFIG3		EN_SHIFT(0x06)
#define EN_TEST			EN_SHIFT(0x07)
#define EN_CSNSAV		EN_SHIFT(0x08)
#define EN_HLTCLK		EN_SHIFT(0x09)

#define EN_INTR			EN_SHIFT(0x0b)
#define EN_FMWP			EN_SHIFT(0x0c)
#define EN_CONFIG4		EN_SHIFT(0x0d)

#define ENCR_STOP	    0x01					// Stop and reset the chip         
#define ENCR_START	    0x02					// Start the chip, clear reset 
#define ENCR_TRANS	    0x04					// Transmit a frame        
#define ENCR_RREAD	    0x08					// Remote read             
#define ENCR_RWRITE	    0x10					// Remote write       
#define ENCR_NODMA	    0x20					// Remote DMA              
#define ENCR_PAGE0	    0x00					// Select page chip registers        
#define ENCR_PAGE1	    0x40					// using the two high-order bits   
#define ENCR_PAGE2	    0x80 
#define ENCR_PAGE3	    0xc0 

#define	ENISR_RX   		0x01					// Receiver, no error   
#define	ENISR_TX	    0x02					// Transceiver, no error  
#define	ENISR_RX_ERR	0x04					// Receiver, with error    
#define	ENISR_TX_ERR	0x08					// Transmitter, with error     
#define	ENISR_OVER	    0x10					// Receiver overwrote the ring    
#define	ENISR_COUNTERS	0x20					// Counters need emptying    
#define	ENISR_RDC	    0x40					// remote dma complete 
#define	ENISR_RESET     0x80					// Reset completed      
#define	ENISR_ALL	    0x35					// 3f  Interrupts we will enable 	

#define ENIMR_RX		0x01
#define ENIMR_TX		0x02
#define ENIMR_RX_ERR	0x04
#define ENIMR_TX_ERR	0x08
#define ENIMR_OVER		0x10
#define ENIMR_COUNTERS	0x20
#define ENIMR_RDC		0x40

#define ENTSR_PTX	    0x01					// Packet transmitted without error 
#define ENTSR_ND	    0x02					// The transmit wasn't deferred
#define ENTSR_COL	    0x04					// The transmit collided at least once
#define ENTSR_ABT	    0x08					// The transmit collided 16 times, and was deferred
#define ENTSR_CRS	    0x10					// The carrier sense was lost
#define ENTSR_FU	    0x20					// A "FIFO underrun" occurred during transmit
#define ENTSR_CDH	    0x40					// The collision detect "heartbeat" signal was lost
#define ENTSR_OWC	    0x80					// There was an out-of-window collision

#define ENRSR_RXOK  	0x01					// Received a good packet 	
#define ENRSR_CRC	    0x02					// CRC error(CNTR1++) 
#define ENRSR_FAE	    0x04					// Frame alignment error(CNTR0++)
#define ENRSR_FO	    0x08					// FIFO overrun when receiving 
#define ENRSR_MPA	    0x10					// Missed packet.. Gap area isn't exist 
#define ENRSR_PHY	    0x20					// Physical/multicase address 
#define ENRSR_DIS	    0x40					// Receiver disable.set in monitor mode 
#define ENRSR_DEF	    0x80					// Deferring because of collision  

#define ENTCR_TXCONFIG 	0x00    				// Normal transmit mode 
#define ENTCR_CRC	    0x01					// inhibit CRC,do not append crc when 1 
#define ENTCR_LOOP	    0x02					// set internal loopback mode 
#define ENTCR_LB01	    0x06					// encoded loopback control 
#define ENTCR_ATD	    0x08					// auto tx disable  
#define ENTCR_OFST	    0x10					// collision offset enable
#define ENTCR_TXOFF		0x02

#define ENRCR_RXCONFIG 	0x04 					// EN0_RXCR: broadcasts,no multicast,errors
#define ENRCR_CRC	    0x01					// Save error packets(admit) 
#define ENRCR_RUNT	    0x02					// Accept runt pckt(below 64bytes) 
#define ENRCR_BCST	    0x04					// Accept broadcasts when 1 
#define ENRCR_MULTI		0x08					// Multicast (if pass filter) when 0 
#define ENRCR_PROMP		0x10					// Promiscuous physical addresses when 1
#define ENRCR_MON	    0x20					// Monitor mode (no packets rcvd)
#define ENRCR_RXOFF		0x20 

#define ENDCR_WTS	    0x01					// byte transfer mode selection 0/1 byte/word width 
#define ENDCR_BOS	    0x02					// byte order selection              
#define ENDCR_LAS	    0x04					// long addr selection (must be set to zero) 
#define ENDCR_BMS	    0x08					// loopback select       set is normal  mode    
#define ENDCR_ARM	    0x10					// autoinitialize remote when 1     
#define ENDCR_FT00	    0x00					// fifo treshold   2 byte          
#define ENDCR_FT01	    0x20					//                  4 byte    
#define ENDCR_FT10	    0x40					//                  8 byte     
#define ENDCR_FT11	    0x60					//                 12 byte      


void getnic(unsigned short addr, unsigned char data[],unsigned short len);
void putnic(unsigned short addr, unsigned char data[],unsigned short len);

void ResetNic(void);
unsigned short GetEthernet(ETHERFRAME *efp);
unsigned short PutEthernet(ETHERFRAME *efp, unsigned short len);
unsigned short MakeFrame(ETHERFRAME *efp, unsigned char srce[], unsigned char dest[], unsigned short pcol, unsigned short dlen);
void SwapEther(ETHERFRAME *efp);

#endif