?? rtl8019.c
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#include "44b0x.h"
#include "DataType.h"
#include "console.h"
#include "rtl8019.h"
static U8 SrcMacID[6]={0x00,0x0d,0x61,0xa9,0xf5,0x36};
#define ETH_FRAME_LEN 1500
#define Net_Addr 0x6000000
#define RPSTART 0x4c
#define RPSTOP 0x60
#define SPSTART 0x40
static U8 net_start;
static U8 rBNRY;
/****************************************************************************
* 名稱：WriteToNet()
* 功能：把數(shù)據(jù)寫入RTL8019AS
* 入口參數(shù)： ADDR 寫入地址
WRITEDATA 寫入數(shù)據(jù)
* 出口參數(shù)：無
****************************************************************************/
void WriteToNet(U8 ADDR_8,U8 WRITEDATA)
{
(*((volatile U8 *) Net_Addr+ADDR_8))=WRITEDATA;//0x83400000
}
/****************************************************************************
* 名稱：ReadFromNet()
* 功能：從RTL8019AS把數(shù)據(jù)讀出
* 入口參數(shù)： ADDR 讀出地址
* 出口參數(shù)： READDATA 讀出數(shù)據(jù)
****************************************************************************/
U8 ReadFromNet(U8 ADDR_8)
{
U8 temp;
temp=(*((volatile U8 *) Net_Addr+ADDR_8));//0x83400000
return (temp);
}
/**********************************************************************
**函數(shù)原型： void page(uchar pagenumber)
**入口參數(shù):?uchar pagenumber: 要切換的頁
**出口參數(shù): 無
**返 回 值： 無
**說 明： 選擇頁,可選擇0,1,2三頁,第四頁ne000兼容芯片保留
************************************************************************/
void page(U8 pagenumber)
{
U8 temp;
temp=ReadFromNet(0);//command register
//temp=temp&0x3f;
temp=temp&0x3B ;//注意txp位不能要
pagenumber=pagenumber <<6;
temp=temp | pagenumber;
WriteToNet(0,temp);
}
/**********************************************************************
**函數(shù)原型： void SetMacID()
**入口參數(shù): *mac_ptr
**出口參數(shù): 無
**返 回 值： 無
**說 明： 設(shè)置芯片物理地址,物理地址已經(jīng)存儲在程序空間內(nèi)
************************************************************************/
void SetMacID(void)
{
page(1);
WriteToNet(1, SrcMacID[0]);
WriteToNet(2, SrcMacID[1]);
WriteToNet(3, SrcMacID[2]);
WriteToNet(4, SrcMacID[3]);
WriteToNet(5, SrcMacID[4]);
WriteToNet(6, SrcMacID[5]);
page(0);
}
U8 Rst8019(void)
{
int i;
WriteToNet(0x18, 0x5a);
i = 20000;
while(i--);
page(0);
return (ReadFromNet(0x07)&0x80);
}
void WakeRtl8019as(void)
{
page(3);
WriteToNet(0x01, 0xcf); //set eem1-0, 11 ,enable write config register
WriteToNet(0x06, 0x70); //clear pwrdn, sleep mode, set led0 as led_link, led1 as led_rx
WriteToNet(0x01, 0x3f); //disable write config register
}
void InitRS8019(void)
{
net_start = 1;
WriteToNet(0x00, 0x21); /* set page 0 and stop */
WriteToNet(0x01, RPSTART); /* set Pstart 0x4c */
WriteToNet(0x02, RPSTOP); /* set Pstop 0x60 */
WriteToNet(0x03, RPSTART); /* BNRY-> the last page has been read */
WriteToNet(0x04, SPSTART); /* transmit page start register, 0x40 */
WriteToNet(12, 0xcc); /* set RCR 0xcc */
WriteToNet(13, 0xe0); /* set TCR 0xe0 */
#ifdef RTL8019_OP_16
WriteToNet(14, 0xc9); /* set DCR 0xc9, 16bit DMA */
#else
WriteToNet(14, 0xc8); /* 8bit DMA */
#endif
WriteToNet(15, 0x03); /* set IMR 0x03 */
WriteToNet(7, 0xff);
page(1);
WriteToNet(7, RPSTART+1);
WriteToNet(8, 0x00);
WriteToNet(9, 0x41);
WriteToNet(10, 0x00);
WriteToNet(11, 0x80);
WriteToNet(12, 0x00);
WriteToNet(13, 0x00);
WriteToNet(14, 0x00);
WriteToNet(15, 0x00);
WriteToNet(0, 0x22); /* set page 0 and start */
net_start = 0;
rBNRY = RPSTART;
}
int s3c44b0_eth_init(void)
{
U16 i;
WakeRtl8019as();
if(!Rst8019())
{
printf("\nRtl8019 Reset Failed!\n");
printf("%x ", ReadFromNet(7));
return -1;
}
printf("\nRtl8019 Reset Successfully\n");
InitRS8019();
i = ReadFromNet(10);
i |= ReadFromNet(11)<<8;
printf("The ID of the Rtl8019 is: %#4x\n",i);
SetMacID();
return 0;
}
int s3c44b0_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
page(0);
WriteToNet(0x00, 0x22);
WriteToNet(0x08, 0);
WriteToNet(0x09, send_page);
WriteToNet(0x0a, len&0xff);
WriteToNet(0x0b, len>>8);
WriteToNet(0x00, 0x12);
#ifdef RTL8019_OP_16
len += len&1;
for(i=0; i<(len>>1); i++)
WriteToNet(0x10, ((U16 *)data)[i]);
#else
for(i=0; i<len; i++)
WriteToNet(0x10, data[i]); // tarns to ram
#endif
while(ReadFromNet(0x00)&4);
WriteToNet(0x04, send_page);
WriteToNet(0x05, len&0xff);
WriteToNet(0x06, len>>8);
WriteToNet(0x00, 0x1e); // begin to send
return 0;
}
int s3c44b0_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;
page(0);
WriteToNet(0x03, rBNRY);
if(ReadFromNet(0x07)&1) //接收成功
WriteToNet(0x07, 0x1); //清除中斷標志
else
return 0;
page(1);
RxPageEnd = ReadFromNet(0x07);
page(0);
RxPageBeg = rBNRY+1;
if(RxPageBeg>=RPSTOP)
RxPageBeg = RPSTART;
WriteToNet(0x00, 0x22);
//outport(RSAR0, RxPageBeg<<8);
//outport(RBCR0, 256);
WriteToNet(0x08, 0);
WriteToNet(0x09, RxPageBeg);
WriteToNet(0x0a, 4);
WriteToNet(0x0b, 0);
WriteToNet(0x00, 0xa);
#ifdef RTL8019_OP_16
RxLength = ReadFromNet(0x10);
RxStatus = RxLength&0xff;
RxNextPage = RxLength>>8;
RxLength = ReadFromNet(0x10);
RxLength += RxLength&1;
#else
RxStatus = ReadFromNet(0x10);
RxNextPage = ReadFromNet(0x10);
RxLength = ReadFromNet(0x10);
RxLength |= ReadFromNet(0x10)<<8;
#endif
if(RxLength>ETH_FRAME_LEN)
{
if(RxPageEnd==RPSTART)
rBNRY = RPSTOP-1;
else
rBNRY = RxPageEnd-1;
WriteToNet(0x03, rBNRY);
return -1;
}
RxLength-=4; //去掉CRC
*len=RxLength;
WriteToNet(0x08, 4);
WriteToNet(0x09, RxPageBeg);
WriteToNet(0x0a, RxLength);
WriteToNet(0x0b, RxLength>>8);
WriteToNet(0x00, 0xa);
#ifdef RTL8019_OP_16
i = 2;
data_16 -= i;
RxLength >>= 1;
for(; RxLength--;) {
if(!(i&0x7f)) {
WriteToNet(0x03, RxPageBeg);
RxPageBeg++;
if(RxPageBeg>=RPSTOP)
RxPageBeg = RPSTART;
}
data_16[i++] = ReadFromNet(0x10);
// printf("%x,", data_16[i-1]);
}
#else
i = 4;
data -= i;
for(; RxLength--;)
{
if(!(i&0xff))
{
WriteToNet(0x03, RxPageBeg);
RxPageBeg++;
if(RxPageBeg>=RPSTOP)
RxPageBeg = RPSTART;
}
data[i++] = ReadFromNet(0x10);
}
#endif
WriteToNet(0x03, RxPageBeg);
rBNRY = RxPageBeg;
return 1;
}
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