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contiki/cpu/avr/dev/rtl8019.c

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#include "rtl8019.h"
#include "delay.h"
#include "debug.h"
#include "avr/pgmspace.h"
#include "rtlregs.h"
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif
#define outp(val, port) do { (port) = (val); } while(0)
#define inp(port) (port)
/*****************************************************************************
* Module Name: Realtek 8019AS Driver
*
* Created By: Louis Beaudoin (www.embedded-creations.com)
*
* Original Release: September 21, 2002
*
* Module Description:
* Provides functions to initialize the Realtek 8019AS, and send and retreive
* packets
*
* November 15, 2002 - Louis Beaudoin
* processRTL8019Interrupt() - bit mask mistake fixed
*
* September 30, 2002 - Louis Beaudoin
* Receive functions modified to handle errors encountered when receiving a
* fast data stream. Functions now manually retreive data instead of
* using the send packet command. Interface improved by checking for
* overruns and data in the buffer internally.
* Corrected the overrun function - overrun flag was not reset after overrun
* Added support for the Imagecraft Compiler
* Added support to communicate with the NIC using general I/O ports
*
*****************************************************************************/
/*****************************************************************************
* writeRTL( RTL_ADDRESS, RTL_DATA )
* Args: 1. unsigned char RTL_ADDRESS - register offset of RTL register
* 2. unsigned char RTL_DATA - data to write to register
* Created By: Louis Beaudoin
* Date: September 21, 2002
* Description: Writes byte to RTL8019 register.
*
* Notes - If using the External SRAM Interface, performs a write to
* address MEMORY_MAPPED_RTL8019_OFFSET + (RTL_ADDRESS<<8)
* The address is sent in the non-multiplxed upper address port so
* no latch is required.
*
* If using general I/O ports, the data port is left in the input
* state with pullups enabled
*
*****************************************************************************/
#if MEMORY_MAPPED_NIC == 1
/*#define writeRTL(RTL_ADDRESS,RTL_DATA) do{ *(volatile unsigned char *) \
(MEMORY_MAPPED_RTL8019_OFFSET \
+ (((unsigned char)(RTL_ADDRESS)) << 8)) = \
(unsigned char)(RTL_DATA); } while(0)*/
#define writeRTL nic_write
#else
void writeRTL(unsigned char address, unsigned char data)
{
// put the address and data in the port registers - data port is output
outp( address, RTL8019_ADDRESS_PORT );
outp( 0xFF, RTL8019_DATA_DDR );
outp( data, RTL8019_DATA_PORT );
// toggle write pin
RTL8019_CLEAR_WRITE;
RTL8019_SET_WRITE;
// set data port back to input with pullups enabled
outp( 0x00, RTL8019_DATA_DDR );
outp( 0xFF, RTL8019_DATA_PORT );
}
#endif
/*****************************************************************************
* readRTL(RTL_ADDRESS)
* Args: unsigned char RTL_ADDRESS - register offset of RTL register
* Created By: Louis Beaudoin
* Date: September 21, 2002
* Description: Reads byte from RTL8019 register
*
* Notes - If using the External SRAM Interface, performs a read from
* address MEMORY_MAPPED_RTL8019_OFFSET + (RTL_ADDRESS<<8)
* The address is sent in the non-multiplxed upper address port so
* no latch is required.
*
* If using general I/O ports, the data port is assumed to already be
* an input, and is left as an input port when done
*
*****************************************************************************/
#if MEMORY_MAPPED_NIC == 1
/*#define readRTL(RTL_ADDRESS) (*(volatile unsigned char *) \
(MEMORY_MAPPED_RTL8019_OFFSET \
+ (((unsigned char)(RTL_ADDRESS)) << 8)) )*/
#define readRTL nic_read
#else
unsigned char readRTL(unsigned char address)
{
unsigned char byte;
// drive the read address
outp( address, RTL8019_ADDRESS_PORT );
//nop();
// assert read
RTL8019_CLEAR_READ;
nop();
// read in the data
byte = inp( RTL8019_DATA_PIN );
// negate read
RTL8019_SET_READ;
return byte;
}
#endif
/*****************************************************************************
* RTL8019setupPorts(void);
*
* Created By: Louis Beaudoin
* Date: September 21, 2002
* Description: Sets up the ports used for communication with the RTL8019 NIC
* (data bus, address bus, read, write, and reset)
*****************************************************************************/
void RTL8019setupPorts(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
#if MEMORY_MAPPED_NIC == 1
// enable external SRAM interface - no wait states
outp(inp(MCUCR) | (1<<SRE), MCUCR);
#else
// make the address port output
outp( 0xFF, RTL8019_ADDRESS_DDR );
// make the data port input with pull-ups
outp( 0xFF, RTL8019_DATA_PORT );
// make the control port read and write pins outputs and asserted
//outp( inp(RTL8019_CONTROL_DDR) | (1<<RTL8019_CONTROL_READPIN) |
// (1<<RTL8019_CONTROL_WRITEPIN), RTL8019_CONTROL_DDR );
sbi( RTL8019_CONTROL_DDR, RTL8019_CONTROL_READPIN );
sbi( RTL8019_CONTROL_DDR, RTL8019_CONTROL_WRITEPIN );
//outp( inp(RTL8019_CONTROL_PORT) | (1<<RTL8019_CONTROL_READPIN) |
// (1<<RTL8019_CONTROL_WRITEPIN), RTL8019_CONTROL_PORT );
sbi( RTL8019_CONTROL_PORT, RTL8019_CONTROL_READPIN );
sbi( RTL8019_CONTROL_PORT, RTL8019_CONTROL_WRITEPIN );
#endif
// enable output pin for Resetting the RTL8019
sbi( RTL8019_RESET_DDR, RTL8019_RESET_PIN );
}
/*****************************************************************************
* HARD_RESET_RTL8019()
*
* Created By: Louis Beaudoin
* Date: September 21, 2002
* Description: Simply toggles the pin that resets the NIC
*****************************************************************************/
/*#define HARD_RESET_RTL8019() do{ sbi(RTL8019_RESET_PORT, RTL8019_RESET_PIN); \
Delay_10ms(1); \
cbi(RTL8019_RESET_PORT, RTL8019_RESET_PIN);} \
while(0)*/
/*****************************************************************************
* overrun(void);
*
* Created By: Louis Beaudoin
* Date: September 21, 2002
* Description: "Canned" receive buffer overrun function originally from
* a National Semiconductor appnote
* Notes: This function must be called before retreiving packets from
* the NIC if there is a buffer overrun
*****************************************************************************/
void overrun(void);
//******************************************************************
//* REALTEK CONTROL REGISTER OFFSETS
//* All offsets in Page 0 unless otherwise specified
//* All functions accessing CR must leave CR in page 0 upon exit
//******************************************************************
#define CR 0x00
#define PSTART 0x01
#define PAR0 0x01 // Page 1
#define CR9346 0x01 // Page 3
#define PSTOP 0x02
#define BNRY 0x03
#define TSR 0x04
#define TPSR 0x04
#define TBCR0 0x05
#define NCR 0x05
#define TBCR1 0x06
#define ISR 0x07
#define CURR 0x07 // Page 1
#define RSAR0 0x08
#define CRDA0 0x08
#define RSAR1 0x09
#define CRDA1 0x09
#define RBCR0 0x0A
#define RBCR1 0x0B
#define RSR 0x0C
#define RCR 0x0C
#define TCR 0x0D
#define CNTR0 0x0D
#define DCR 0x0E
#define CNTR1 0x0E
#define IMR 0x0F
#define CNTR2 0x0F
#define RDMAPORT 0x10
#define RSTPORT 0x18
/*****************************************************************************
*
* RTL ISR Register Bits
*
*****************************************************************************/
#define ISR_RST 7
#define ISR_OVW 4
#define ISR_PRX 0
#define ISR_RDC 6
#define ISR_PTX 1
/*****************************************************************************
*
* RTL Register Initialization Values
*
*****************************************************************************/
// RCR : accept broadcast packets and packets destined to this MAC
// drop short frames and receive errors
#define RCR_INIT 0x04
// TCR : default transmit operation - CRC is generated
#define TCR_INIT 0x00
// DCR : allows send packet to be used for packet retreival
// FIFO threshold: 8-bits (works)
// 8-bit transfer mode
#define DCR_INIT 0x58
// IMR : interrupt enabled for receive and overrun events
#define IMR_INIT 0x11
// buffer boundaries - transmit has 6 256-byte pages
// receive has 26 256-byte pages
// entire available packet buffer space is allocated
#define TXSTART_INIT 0x40
#define RXSTART_INIT 0x46
#define RXSTOP_INIT 0x60
void RTL8019beginPacketSend(unsigned int packetLength)
{
volatile unsigned char *base = (unsigned char *)0x8300;
unsigned int sendPacketLength;
sendPacketLength = (packetLength>=ETHERNET_MIN_PACKET_LENGTH) ?
packetLength : ETHERNET_MIN_PACKET_LENGTH ;
//start the NIC
writeRTL(CR,0x22);
// still transmitting a packet - wait for it to finish
while( readRTL(CR) & 0x04 );
//load beginning page for transmit buffer
writeRTL(TPSR,TXSTART_INIT);
//set start address for remote DMA operation
writeRTL(RSAR0,0x00);
writeRTL(RSAR1,0x40);
//clear the packet stored interrupt
writeRTL(ISR,(1<<ISR_PTX));
//load data byte count for remote DMA
writeRTL(RBCR0, (unsigned char)(packetLength));
writeRTL(RBCR1, (unsigned char)(packetLength>>8));
writeRTL(TBCR0, (unsigned char)(sendPacketLength));
writeRTL(TBCR1, (unsigned char)((sendPacketLength)>>8));
//do remote write operation
writeRTL(CR,0x12);
}
void RTL8019sendPacketData(unsigned char * localBuffer, unsigned int length)
{
unsigned int i;
volatile unsigned char *base = (unsigned char *)0x8300;
for(i=0;i<length;i++)
writeRTL(RDMAPORT, localBuffer[i]);
}
void RTL8019endPacketSend(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
//send the contents of the transmit buffer onto the network
writeRTL(CR,0x24);
// clear the remote DMA interrupt
writeRTL(ISR, (1<<ISR_RDC));
}
// pointers to locations in the RTL8019 receive buffer
static unsigned char nextPage;
static unsigned int currentRetreiveAddress;
// location of items in the RTL8019's page header
#define enetpacketstatus 0x00
#define nextblock_ptr 0x01
#define enetpacketLenL 0x02
#define enetpacketLenH 0x03
unsigned int RTL8019beginPacketRetreive(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
unsigned char i;
unsigned char bnry;
unsigned char pageheader[4];
unsigned int rxlen;
// check for and handle an overflow
processRTL8019Interrupt();
// read CURR from page 1
writeRTL(CR,0x62);
i = readRTL(CURR);
// return to page 0
writeRTL(CR,0x22);
// read the boundary register - pointing to the beginning of the packet
bnry = readRTL(BNRY) ;
/* debug_print(PSTR("bnry: "));
debug_print8(bnry);*/
/* debug_print(PSTR("RXSTOP_INIT: "));
debug_print8(RXSTOP_INIT);
debug_print(PSTR("RXSTART_INIT: "));
debug_print8(RXSTART_INIT);*/
// return if there is no packet in the buffer
if( bnry == i ) {
return 0;
}
// clear the packet received interrupt flag
writeRTL(ISR, (1<<ISR_PRX));
// the boundary pointer is invalid, reset the contents of the buffer and exit
if( (bnry >= RXSTOP_INIT) || (bnry < RXSTART_INIT) )
{
writeRTL(BNRY, RXSTART_INIT);
writeRTL(CR, 0x62);
writeRTL(CURR, RXSTART_INIT);
writeRTL(CR, 0x22);
return 0;
}
// initiate DMA to transfer the RTL8019 packet header
writeRTL(RBCR0, 4);
writeRTL(RBCR1, 0);
writeRTL(RSAR0, 0);
writeRTL(RSAR1, bnry);
writeRTL(CR, 0x0A);
/* debug_print(PSTR("Page header: "));*/
for(i=0;i<4;i++) {
pageheader[i] = readRTL(RDMAPORT);
/* debug_print8(pageheader[i]);*/
}
// end the DMA operation
writeRTL(CR, 0x22);
for(i = 0; i <= 20; i++) {
if(readRTL(ISR) & 1<<6) {
break;
}
}
writeRTL(ISR, 1<<6);
rxlen = (pageheader[enetpacketLenH]<<8) + pageheader[enetpacketLenL];
nextPage = pageheader[nextblock_ptr] ;
currentRetreiveAddress = (bnry<<8) + 4;
/* debug_print(PSTR("nextPage: "));
debug_print8(nextPage);*/
// if the nextPage pointer is invalid, the packet is not ready yet - exit
if( (nextPage >= RXSTOP_INIT) || (nextPage < RXSTART_INIT) ) {
/* UDR0 = '0';*/
return 0;
}
return rxlen-4;
}
void RTL8019retreivePacketData(unsigned char * localBuffer, unsigned int length)
{
unsigned int i;
volatile unsigned char *base = (unsigned char *)0x8300;
// initiate DMA to transfer the data
writeRTL(RBCR0, (unsigned char)length);
writeRTL(RBCR1, (unsigned char)(length>>8));
writeRTL(RSAR0, (unsigned char)currentRetreiveAddress);
writeRTL(RSAR1, (unsigned char)(currentRetreiveAddress>>8));
writeRTL(CR, 0x0A);
for(i=0;i<length;i++)
localBuffer[i] = readRTL(RDMAPORT);
// end the DMA operation
writeRTL(CR, 0x22);
for(i = 0; i <= 20; i++)
if(readRTL(ISR) & 1<<6)
break;
writeRTL(ISR, 1<<6);
currentRetreiveAddress += length;
if( currentRetreiveAddress >= 0x6000 )
currentRetreiveAddress = currentRetreiveAddress - (0x6000-0x4600) ;
}
void RTL8019endPacketRetreive(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
unsigned char i;
// end the DMA operation
writeRTL(CR, 0x22);
for(i = 0; i <= 20; i++)
if(readRTL(ISR) & 1<<6)
break;
writeRTL(ISR, 1<<6);
// set the boundary register to point to the start of the next packet
writeRTL(BNRY, nextPage);
}
void overrun(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
unsigned char data_L, resend;
data_L = readRTL(CR);
writeRTL(CR, 0x21);
Delay_1ms(2);
writeRTL(RBCR0, 0x00);
writeRTL(RBCR1, 0x00);
if(!(data_L & 0x04))
resend = 0;
else if(data_L & 0x04)
{
data_L = readRTL(ISR);
if((data_L & 0x02) || (data_L & 0x08))
resend = 0;
else
resend = 1;
}
writeRTL(TCR, 0x02);
writeRTL(CR, 0x22);
writeRTL(BNRY, RXSTART_INIT);
writeRTL(CR, 0x62);
writeRTL(CURR, RXSTART_INIT);
writeRTL(CR, 0x22);
writeRTL(ISR, 0x10);
writeRTL(TCR, TCR_INIT);
writeRTL(ISR, 0xFF);
}
/*!
* \brief Size of a single ring buffer page.
*/
#define NIC_PAGE_SIZE 0x100
/*!
* \brief First ring buffer page address.
*/
#define NIC_START_PAGE 0x40
/*!
* \brief Last ring buffer page address plus 1.
*/
#define NIC_STOP_PAGE 0x60
/*!
* \brief Number of pages in a single transmit buffer.
*
* This should be at least the MTU size.
*/
#define NIC_TX_PAGES 6
/*!
* \brief Number of transmit buffers.
*/
#define NIC_TX_BUFFERS 2
/*!
* \brief Controller memory layout:
*
* 0x4000 - 0x4bff 3k bytes transmit buffer
* 0x4c00 - 0x5fff 5k bytes receive buffer
*/
#define NIC_FIRST_TX_PAGE NIC_START_PAGE
#define NIC_FIRST_RX_PAGE (NIC_FIRST_TX_PAGE + NIC_TX_PAGES * NIC_TX_BUFFERS)
/*!
* \brief Standard sizing information
*/
#define TX_PAGES 12 /* Allow for 2 back-to-back frames */
static unsigned char mac[6] = {0x00,0x06,0x98,0x01,0x02,0x29};
void Delay(long nops)
{
volatile long i;
for(i = 0; i < nops; i++)
#ifdef __IMAGECRAFT__
asm("nop\n");
#else
asm volatile("nop\n\t"::);
#endif
}
static int NicReset(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
unsigned char i;
unsigned char j;
for(j = 0; j < 20; j++) {
debug_print(PSTR("SW-Reset..."));
i = nic_read(NIC_RESET);
Delay(500);
nic_write(NIC_RESET, i);
for(i = 0; i < 20; i++) {
Delay(5000);
/*
* ID detection added for version 1.1 boards.
*/
if((nic_read(NIC_PG0_ISR) & NIC_ISR_RST) != 0 &&
nic_read(NIC_PG0_RBCR0) == 0x50 &&
nic_read(NIC_PG0_RBCR1) == 0x70) {
debug_print(PSTR("OK\r\n"));
return 0;
}
}
debug_print(PSTR("failed\r\n\x07"));
/*
* Toggle the hardware reset line. Since Ethernut version 1.3 the
* hardware reset pin of the nic is no longer connected to bit 4
* on port E, but wired to the board reset line.
*/
if(j == 10) {
debug_print(PSTR("Ethernut 1.1 HW-Reset\r\n"));
sbi(DDRE, 4);
sbi(PORTE, 4);
Delay(100000);
cbi(PORTE, 4);
Delay(250000);
}
}
return -1;
}
void initRTL8019(void)
{
unsigned char i, rb;
volatile unsigned char *base = (unsigned char *)0x8300;
RTL8019setupPorts();
/*#define nic_write writeRTL
#define nic_read readRTL*/
/*
* Disable NIC interrupts.
*/
cbi(EIMSK, INT5);
/* if(NicReset(base))
return -1;*/
#if 0
/*
* Mask all interrupts and clear any interrupt status flag to set the
* INT pin back to low.
*/
nic_write(NIC_PG0_IMR, 0);
nic_write(NIC_PG0_ISR, 0xff);
/*
* During reset the nic loaded its initial configuration from an
* external eeprom. On the ethernut board we do not have any
* configuration eeprom, but simply tied the eeprom data line to
* high level. So we have to clear some bits in the configuration
* register. Switch to register page 3.
*/
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2 | NIC_CR_PS0 | NIC_CR_PS1);
/*
* The nic configuration registers are write protected unless both
* EEM bits are set to 1.
*/
nic_write(NIC_PG3_EECR, NIC_EECR_EEM0 | NIC_EECR_EEM1);
/*
* Disable sleep and power down.
*/
nic_write(NIC_PG3_CONFIG3, 0);
/*
* Network media had been set to 10Base2 by the virtual EEPROM and
* will be set now to auto detect. This will initiate a link test.
* We don't force 10BaseT, because this would disable the link test.
*/
nic_write(NIC_PG3_CONFIG2, NIC_CONFIG2_BSELB);
/*
* Reenable write protection of the nic configuration registers
* and wait for link test to complete.
*/
nic_write(NIC_PG3_EECR, 0);
/* NutSleep(WAIT500);*/
Delay_10ms(50);
/*
* Switch to register page 0 and set data configuration register
* to byte-wide DMA transfers, normal operation (no loopback),
* send command not executed and 8 byte fifo threshold.
*/
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2);
nic_write(NIC_PG0_DCR, NIC_DCR_LS | NIC_DCR_FT1);
/*
* Clear remote dma byte count register.
*/
nic_write(NIC_PG0_RBCR0, 0);
nic_write(NIC_PG0_RBCR1, 0);
/*
* Temporarily set receiver to monitor mode and transmitter to
* internal loopback mode. Incoming packets will not be stored
* in the nic ring buffer and no data will be send to the network.
*/
nic_write(NIC_PG0_RCR, NIC_RCR_MON);
nic_write(NIC_PG0_TCR, NIC_TCR_LB0);
/*
* Configure the nic's ring buffer page layout.
* NIC_PG0_BNRY: Last page read.
* NIC_PG0_PSTART: First page of receiver buffer.
* NIC_PG0_PSTOP: Last page of receiver buffer.
*/
nic_write(NIC_PG0_TPSR, NIC_FIRST_TX_PAGE);
nic_write(NIC_PG0_BNRY, NIC_STOP_PAGE - 1);
nic_write(NIC_PG0_PSTART, NIC_FIRST_RX_PAGE);
nic_write(NIC_PG0_PSTOP, NIC_STOP_PAGE);
/*
* Once again clear interrupt status register.
*/
nic_write(NIC_PG0_ISR, 0xff);
/*
* Switch to register page 1 and copy our MAC address into the nic.
* We are still in stop mode.
*/
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2 | NIC_CR_PS0);
for(i = 0; i < 6; i++)
nic_write(NIC_PG1_PAR0 + i, mac[i]);
/*
* Clear multicast filter bits to disable all packets.
*/
for(i = 0; i < 8; i++)
nic_write(NIC_PG1_MAR0 + i, 0);
/*
* Set current page pointer to one page after the boundary pointer.
*/
nic_write(NIC_PG1_CURR, NIC_START_PAGE + TX_PAGES);
/*
* Switch back to register page 0, remaining in stop mode.
*/
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2);
/*
* Take receiver out of monitor mode and enable it for accepting
* broadcasts.
*/
nic_write(NIC_PG0_RCR, NIC_RCR_AB);
/*
* Clear all interrupt status flags and enable interrupts.
*/
nic_write(NIC_PG0_ISR, 0xff);
nic_write(NIC_PG0_IMR, NIC_IMR_PRXE | NIC_IMR_PTXE | NIC_IMR_RXEE |
NIC_IMR_TXEE | NIC_IMR_OVWE);
/*
* Fire up the nic by clearing the stop bit and setting the start bit.
* To activate the local receive dma we must also take the nic out of
* the local loopback mode.
*/
nic_write(NIC_CR, NIC_CR_STA | NIC_CR_RD2);
nic_write(NIC_PG0_TCR, 0);
/* NutSleep(WAIT500);*/
Delay_10ms(50);
#endif /* 0 */
NicReset();
debug_print(PSTR("Init controller..."));
nic_write(NIC_PG0_IMR, 0);
nic_write(NIC_PG0_ISR, 0xff);
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2 | NIC_CR_PS0 | NIC_CR_PS1);
nic_write(NIC_PG3_EECR, NIC_EECR_EEM0 | NIC_EECR_EEM1);
nic_write(NIC_PG3_CONFIG3, 0);
nic_write(NIC_PG3_CONFIG2, NIC_CONFIG2_BSELB);
nic_write(NIC_PG3_EECR, 0);
/* Delay(50000);*/
Delay_10ms(200);
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2);
nic_write(NIC_PG0_DCR, NIC_DCR_LS | NIC_DCR_FT1);
nic_write(NIC_PG0_RBCR0, 0);
nic_write(NIC_PG0_RBCR1, 0);
nic_write(NIC_PG0_RCR, NIC_RCR_MON);
nic_write(NIC_PG0_TCR, NIC_TCR_LB0);
nic_write(NIC_PG0_TPSR, NIC_FIRST_TX_PAGE);
nic_write(NIC_PG0_BNRY, NIC_STOP_PAGE - 1);
nic_write(NIC_PG0_PSTART, NIC_FIRST_RX_PAGE);
nic_write(NIC_PG0_PSTOP, NIC_STOP_PAGE);
nic_write(NIC_PG0_ISR, 0xff);
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2 | NIC_CR_PS0);
for(i = 0; i < 6; i++)
nic_write(NIC_PG1_PAR0 + i, mac[i]);
for(i = 0; i < 8; i++)
nic_write(NIC_PG1_MAR0 + i, 0);
nic_write(NIC_PG1_CURR, NIC_START_PAGE + TX_PAGES);
nic_write(NIC_CR, NIC_CR_STP | NIC_CR_RD2);
nic_write(NIC_PG0_RCR, NIC_RCR_AB);
nic_write(NIC_PG0_ISR, 0xff);
nic_write(NIC_PG0_IMR, 0);
nic_write(NIC_CR, NIC_CR_STA | NIC_CR_RD2);
nic_write(NIC_PG0_TCR, 0);
/* Delay(1000000)*/
Delay_10ms(200);
nic_write(NIC_CR, NIC_CR_STA | NIC_CR_RD2 | NIC_CR_PS0 | NIC_CR_PS1);
rb = nic_read(NIC_PG3_CONFIG0);
debug_print8(rb);
switch(rb & 0xC0) {
case 0x00:
debug_print(PSTR("RTL8019AS "));
if(rb & 0x08)
debug_print(PSTR("jumper mode: "));
if(rb & 0x20)
debug_print(PSTR("AUI "));
if(rb & 0x10)
debug_print(PSTR("PNP "));
break;
case 0xC0:
debug_print(PSTR("RTL8019 "));
if(rb & 0x08)
debug_print(PSTR("jumper mode: "));
break;
default:
debug_print(PSTR("Unknown chip "));
debug_print8(rb);
break;
}
if(rb & 0x04)
debug_print(PSTR("BNC\x07 "));
if(rb & 0x03)
debug_print(PSTR("Failed\x07 "));
/* rb = nic_read(NIC_PG3_CONFIG1);
debug_print8(rb);*/
/* NutPrintFormat(0, "IRQ%u ", (rb >> 4) & 7);*/
/* debug_print("IRQ ");
debug_print8((rb >> 4) & 7);*/
rb = nic_read(NIC_PG3_CONFIG2);
debug_print8(rb);
switch(rb & 0xC0) {
case 0x00:
debug_print(PSTR("Auto "));
break;
case 0x40:
debug_print(PSTR("10BaseT "));
break;
case 0x80:
debug_print(PSTR("10Base5 "));
break;
case 0xC0:
debug_print(PSTR("10Base2 "));
break;
}
return;
/* HARD_RESET_RTL8019();*/
// do soft reset
writeRTL( ISR, readRTL(ISR) ) ;
Delay_10ms(5);
writeRTL(CR,0x21); // stop the NIC, abort DMA, page 0
Delay_1ms(2); // make sure nothing is coming in or going out
writeRTL(DCR, DCR_INIT); // 0x58
writeRTL(RBCR0,0x00);
writeRTL(RBCR1,0x00);
writeRTL(RCR,0x04);
writeRTL(TPSR, TXSTART_INIT);
writeRTL(TCR,0x02);
writeRTL(PSTART, RXSTART_INIT);
writeRTL(BNRY, RXSTART_INIT);
writeRTL(PSTOP, RXSTOP_INIT);
writeRTL(CR, 0x61);
Delay_1ms(2);
writeRTL(CURR, RXSTART_INIT);
writeRTL(PAR0+0, MYMAC_0);
writeRTL(PAR0+1, MYMAC_1);
writeRTL(PAR0+2, MYMAC_2);
writeRTL(PAR0+3, MYMAC_3);
writeRTL(PAR0+4, MYMAC_4);
writeRTL(PAR0+5, MYMAC_5);
writeRTL(CR,0x21);
writeRTL(DCR, DCR_INIT);
writeRTL(CR,0x22);
writeRTL(ISR,0xFF);
writeRTL(IMR, IMR_INIT);
writeRTL(TCR, TCR_INIT);
writeRTL(CR, 0x22); // start the NIC
}
void processRTL8019Interrupt(void)
{
volatile unsigned char *base = (unsigned char *)0x8300;
unsigned char byte = readRTL(ISR);
if( byte & (1<<ISR_OVW) )
overrun();
}
/*
unsigned char RTL8019ReceiveEmpty(void)
{
unsigned char temp;
// read CURR from page 1
writeRTL(CR,0x62);
temp = readRTL(CURR);
// return to page 0
writeRTL(CR,0x22);
return ( readRTL(BNRY) == temp );
}*/
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