rtl8019.c

杭州立宇泰ARMsys－P型ARM开发板BIOS代码

/****************************************************************
 *		ARMSYS7 S3C44B0X developer's notes						*  
 ****************************************************************

 1. 2005.5.17::
 
 ***************************************************************/

#include "..\inc\config.h"
#include "..\inc\board.h"
#include "..\inc\utils.h"
#include "..\inc\Rtl8019.h"
#include "..\inc\tftp\eth.h"
#include "..\inc\tftp\mac.h"

//#define	DEBUG_NET	
#define	RPSTART	0x4c
#define	RPSTOP	0x80
#define	SPSTART	0x40

static U8 rBNRY;

static U8 SrcMacID[ETH_ALEN] = {0x01,0x12,0x34,0x56,0x67,0x89}; //{0x00,0x80,0x48,0x12,0x34,0x56};
//static U8 DstMacID[ETH_ALEN];

static U8 net_start;

void SetRegPage(U8 PageIdx)
{
	U8 temp;
	
	temp = inportb(BaseAddr);	
//	temp = (temp&(0x3a|net_start))|(PageIdx<<6);	//ensure bit0 clear!!!
	temp = (temp&0x3b)|(PageIdx<<6);						
	outportb(temp, BaseAddr);
}

static void SetMacID()
{	
	SetRegPage(1);
	
	outportb(SrcMacID[0], PAR0);
	outportb(SrcMacID[1], PAR1);
	outportb(SrcMacID[2], PAR2);
	outportb(SrcMacID[3], PAR3);
	outportb(SrcMacID[4], PAR4);
	outportb(SrcMacID[5], PAR5);
}

static U8 Rst8019()
{
	int i;
	
	outportb(0x5a, RstAddr);
	i = 20000;
	while(i--);
	SetRegPage(0);
	return (inportb(ISR)&0x80);
}

static void WakeRtl8019as()
{
	SetRegPage(3);	
	outportb(0xcf, CR9346);		//set eem1-0, 11 ,enable write config register
	outportb(0x70, CONFIG3);	//clear pwrdn, sleep mode, set led0 as led_link, led1 as led_rx	
	outportb(0x3f, CR9346); 	//disable write config register
}

static void InitRS8019()
{
	net_start = 1;
	outportb(0x21, BaseAddr);	/* set page 0 and stop */
	outportb(RPSTART, Pstart);	/* set Pstart 0x4c */
	outportb(RPSTOP, Pstop);	/* set Pstop 0x80 */
	outportb(RPSTART, BNRY);	/* BNRY-> the last page has been read */	
	outportb(SPSTART, TPSR);	/* transmit page start register, 0x40 */
	outportb(0xcc, RCR);		/* set RCR 0xcc */	
	outportb(0xe0, TCR);		/* set TCR 0xe0 */
//#ifdef	RTL8019_OP_16
//	outportb(0xc9, DCR);		/* set DCR 0xc9, 16bit DMA */	
//#else
	outportb(0xc8, DCR);		/* 8bit DMA */
//#endif
	outportb(0x03, IMR);		/* set IMR 0x03 */
	outportb(0xff, ISR);	
	
	SetRegPage(1);	
	outportb(RPSTART+1, CURR);
	outportb(0x00, MAR0);
	outportb(0x41, MAR1);
	outportb(0x00, MAR2);
	outportb(0x80, MAR3);
	outportb(0x00, MAR4);
	outportb(0x00, MAR5);
	outportb(0x00, MAR6);
	outportb(0x00, MAR7);
	outportb(0x22, BaseAddr);	/* set page 0 and start */
	
	net_start = 0;	
	rBNRY = RPSTART;
}

int board_eth_init(void)
{	
	int i;
	
	WakeRtl8019as();
	
	if(!Rst8019()) 
	{
//		puts("Rtl8019 Reset Failed!\n");
//		printf("%x ", inportb(ISR));		
//		return -1;
	}
//	puts("Rtl8019 Reset Successfully\n");		
		
	InitRS8019();
	
	i  = inportb(ID8019L);	
	i |= inportb(ID8019H)<<8;
	
	SetMacID();	
	
	return 0;
}

int board_eth_lnk_stat(void)
{
	return 0;
}

int board_eth_send(unsigned char *data, unsigned int len)
{
	static sFlag = 0;
	int i;
	U8 send_page;
	
	send_page  = SPSTART;
	send_page += (sFlag&1)?6:0;
	sFlag++;			
		
	if(len<60)	
		for(; len<60; len++)
			data[len] = 0x20;		//just for pad, any data										
	
	SetRegPage(0);
	outportb(0x22, BaseAddr);
	outportb(0, RSAR0);
	outportb(send_page, RSAR1);
	outportb(len&0xff, RBCR0);
	outportb(len>>8, RBCR1);
	outportb(0x12, BaseAddr);
#ifdef	RTL8019_OP_16
	len += len&1;
	for(i=0; i<(len>>1); i++)
		outportw(((U16 *)data)[i], RWPORT);
#else	
	for(i=0; i<len; i++)
		outportb(data[i], RWPORT);		// tarns to ram			
#endif		

	while(inportb(BaseAddr)&4);
	outportb(send_page, TPSR);
	outportb(len&0xff, TBCR0);
	outportb(len>>8, TBCR1);
	outportb(0x1e, BaseAddr);			// begin to send

	return 0;
}

int board_eth_rcv(unsigned char *data, unsigned int *len)
{
	U8 RxPageBeg, RxPageEnd;
	U8 RxNextPage;
	U8 RxStatus;
	int i, RxLength;
	U16 *data_16;
	
	data_16 = (U16 *)data;
	
	SetRegPage(0);
		outportb(rBNRY, BNRY);	//???
	if(inportb(ISR)&1)			//接收成功
		outportb(0x1, ISR);		//清除中断标志
	else
		return -1;
		
	SetRegPage(1);
	RxPageEnd = inportb(CURR);
	SetRegPage(0);

	RxPageBeg = rBNRY+1;
	if(RxPageBeg>=RPSTOP)
		RxPageBeg = RPSTART;
	outportb(0x22, BaseAddr);

	outportb(0, RSAR0);
	outportb(RxPageBeg, RSAR1);
	outportb(4, RBCR0);
	outportb(0, RBCR1);
	outportb(0xa, BaseAddr);
#ifdef	RTL8019_OP_16
	RxLength   = inportw(RWPORT);
	RxStatus   = RxLength&0xff;
	RxNextPage = RxLength>>8;
	RxLength   = inportw(RWPORT);
	RxLength  += RxLength&1;
#else
	RxStatus   = inportb(RWPORT);
	RxNextPage = inportb(RWPORT);	
	RxLength   = inportb(RWPORT);
	RxLength  |= inportb(RWPORT)<<8;
#endif	

	if(RxLength>ETH_FRAME_LEN)
	{
		if(RxPageEnd==RPSTART)
			rBNRY = RPSTOP-1;
		else
			rBNRY = RxPageEnd-1;
		outportb(rBNRY, BNRY);
		return -1;
	}
	outportb(4, RSAR0);
	outportb(RxPageBeg, RSAR1);
	outportb(RxLength, RBCR0);
	outportb(RxLength>>8, RBCR1);	
	outportb(0xa, BaseAddr);

#ifdef	RTL8019_OP_16
	i = 2;
	data_16 -= i;
	RxLength >>= 1;
	for(; RxLength--;) {
		if(!(i&0x7f)) {
			outportb(RxPageBeg, BNRY);
				RxPageBeg++;
				if(RxPageBeg>=RPSTOP)
					RxPageBeg = RPSTART;
		}
		data_16[i++] = inportw(RWPORT);
	}	
#else
	i     = 4;
	data -= i;
	for(; RxLength--;)
	{
		if(!(i&0xff))
			{
				outportb(RxPageBeg, BNRY);
				RxPageBeg++;
				if(RxPageBeg>=RPSTOP)
					RxPageBeg = RPSTART;					
			}
		data[i++] = inportb(RWPORT);		
	}
#endif	
	outportb(RxPageBeg, BNRY);
	rBNRY = RxPageBeg;
	
	return 0;		

}

int board_eth_get_addr(unsigned char *addr)
{
	Memcpy(addr, SrcMacID, ETH_ALEN);
	return 0;
}