📄 ne2kif.h
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/*
*********************************************************************************************************
* lwIP TCP/IP Stack
* port for uC/OS-II RTOS on TIC6711 DSK
*
* File : tcp_ip.c
* By : ZengMing @ DEP,Tsinghua University,Beijing,China
* Reference: YangYe's source code for SkyEye project
*********************************************************************************************************
*/
#ifndef _NE2K_H_
#define _NE2K_H_
#include "lwip/netif.h"
#define MIN_PACKET_SIZE 60 /* smallest legal size packet, no fcs */
#define MAX_PACKET_SIZE 1514 /* largest legal size packet, no fcs */
/**
* Driver functions.
*/
err_t ne2k_init(struct netif *netif);
static void low_level_init(struct netif * netif);
static void arp_timer(void *arg);
static err_t ne2k_output(struct netif *netif, struct pbuf *p, struct ip_addr *ipaddr);
static err_t low_level_output(struct netif * netif,struct pbuf *p);
u16_t write_AX88796(u8_t * buf, u16_t remote_Addr, u16_t Count);
static void ne2k_input(struct netif *netif);
static struct pbuf * low_level_input(struct netif *netif);
u16_t read_AX88796(u8_t * buf, u16_t remote_Addr, u16_t Count);
/*----------------------------------------
* Register header of C6x DSP
*----------------------------------------*/
#define EMIF_CE2 0x01800010
/* Define QDMA Memory Mapped Registers */
#define QDMA_OPT 0x02000000 /* Address of QDMA options register */
#define QDMA_SRC 0x02000004 /* Address of QDMA SRC address register */
#define QDMA_CNT 0x02000008 /* Address of QDMA counts register */
#define QDMA_DST 0x0200000C /* Address of QDMA DST address register */
#define QDMA_IDX 0x02000010 /* Address of QDMA index register */
/* Define QDMA Pseudo Registers */
#define QDMA_S_OPT 0x02000020 /* Address of QDMA options register */
#define QDMA_S_SRC 0x02000024 /* Address of QDMA SRC address register */
#define QDMA_S_CNT 0x02000028 /* Address of QDMA counts register */
#define QDMA_S_DST 0x0200002C /* Address of QDMA DST address register */
#define QDMA_S_IDX 0x02000030 /* Address of QDMA index register */
/*----------------------------------------
* Register header of NE2000 chip
*----------------------------------------*/
#define Base_ADDR 0xA0000200 ///CE2 space of DSK is 0xA0000000
// and ethernet chip is at 0x200 by default
// actual address on DSK
#define EN_CMD *(unsigned char *)(Base_ADDR+0x00) /* The command register (for all pages) */
#define EN_DATA *(unsigned short *)(Base_ADDR+0x10) /*by ming (change to 16bit) Remote DMA Port10~17h (for all pages)*/
#define EN_RESET *(unsigned char *)(Base_ADDR+0x1F) /* Reset Port 1fh(for all pages) */
/* Page 0 register offsets */
#define EN0_STARTPG *(unsigned char *)(Base_ADDR+0x01) /* WR Starting page of ring buffer */
#define EN0_STOPPG *(unsigned char *)(Base_ADDR+0x02) /* WR Ending page +1 of ring buffer */
#define EN0_BOUNDARY *(unsigned char *)(Base_ADDR+0x03) /* RD/WR Boundary page of ring buffer */
#define EN0_TSR *(unsigned char *)(Base_ADDR+0x04) /* RD Transmit status reg */
#define EN0_TPSR *(unsigned char *)(Base_ADDR+0x04) /* WR Transmit starting page */
#define EN0_NCR *(unsigned char *)(Base_ADDR+0x05) /* RD Number of collision reg */
#define EN0_TCNTLO *(unsigned char *)(Base_ADDR+0x05) /* WR Low byte of tx byte count */
#define EN0_CRP *(unsigned char *)(Base_ADDR+0x06) /* Current Page Register */
#define EN0_TCNTHI *(unsigned char *)(Base_ADDR+0x06) /* WR High byte of tx byte count */
#define EN0_ISR *(unsigned char *)(Base_ADDR+0x07) /* RD/WR Interrupt status reg */
#define EN0_CRDALO *(unsigned char *)(Base_ADDR+0x08) /* RD low byte of current remote dma add*/
#define EN0_RSARLO *(unsigned char *)(Base_ADDR+0x08) /* WR Remote start address reg 0 */
#define EN0_CRDAHI *(unsigned char *)(Base_ADDR+0x09) /* RD high byte, current remote dma add.*/
#define EN0_RSARHI *(unsigned char *)(Base_ADDR+0x09) /* WR Remote start address reg 1 */
#define EN0_RCNTLO *(unsigned char *)(Base_ADDR+0x0A) /* WR Remote byte count reg 0 */
#define EN0_RCNTHI *(unsigned char *)(Base_ADDR+0x0B) /* WR Remote byte count reg 1 */
#define EN0_RSR *(unsigned char *)(Base_ADDR+0x0C) /* RD RX status reg */
#define EN0_RXCR *(unsigned char *)(Base_ADDR+0x0C) /* WR RX configuration reg */
#define EN0_TXCR *(unsigned char *)(Base_ADDR+0x0D) /* WR TX configuration reg */
#define EN0_DCFG *(unsigned char *)(Base_ADDR+0x0E) /* WR Data configuration reg */
#define EN0_IMR *(unsigned char *)(Base_ADDR+0x0F) /* WR Interrupt mask reg */
/* Page 1 register offsets */
#define EN1_PAR0 *(unsigned char *)(Base_ADDR+0x01) /* RD/WR This board's physical ethernet addr */
#define EN1_PAR1 *(unsigned char *)(Base_ADDR+0x02)
#define EN1_PAR2 *(unsigned char *)(Base_ADDR+0x03)
#define EN1_PAR3 *(unsigned char *)(Base_ADDR+0x04)
#define EN1_PAR4 *(unsigned char *)(Base_ADDR+0x05)
#define EN1_PAR5 *(unsigned char *)(Base_ADDR+0x06)
#define EN1_CURR *(unsigned char *)(Base_ADDR+0x07) /* RD/WR current page reg */
#define EN1_CURPAG EN1_CURR
#define EN1_MAR0 *(unsigned char *)(Base_ADDR+0x08) /* RD/WR Multicast filter mask array (8 bytes) */
#define EN1_MAR1 *(unsigned char *)(Base_ADDR+0x09)
#define EN1_MAR2 *(unsigned char *)(Base_ADDR+0x0A)
#define EN1_MAR3 *(unsigned char *)(Base_ADDR+0x0B)
#define EN1_MAR4 *(unsigned char *)(Base_ADDR+0x0C)
#define EN1_MAR5 *(unsigned char *)(Base_ADDR+0x0D)
#define EN1_MAR6 *(unsigned char *)(Base_ADDR+0x0E)
#define EN1_MAR7 *(unsigned char *)(Base_ADDR+0x0F)
/* Command Values at EN_CMD */
#define EN_STOP 0x01 /* Stop and reset the chip */
#define EN_START 0x02 /* Start the chip, clear reset */
#define EN_TRANS 0x04 /* Transmit a frame */
#define EN_RREAD 0x08 /* Remote read */
#define EN_RWRITE 0x10 /* Remote write */
#define EN_NODMA 0x20 /* Remote DMA */
#define EN_PAGE0 0x00 /* Select page chip registers */
#define EN_PAGE1 0x40 /* using the two high-order bits */
//---------------------------------
// Values for Ring-Buffer setting
//---------------------------------
#define NE_START_PG 0x40 /* First page of TX buffer */
#define NE_STOP_PG 0x80 /* Last page + 1 of RX Ring */
#define TX_PAGES 6
#define TX_START_PG NE_START_PG //0x40
#define RX_START_PG NE_START_PG + TX_PAGES //0x46
#define RX_CURR_PG RX_START_PG + 1 //0x47
#define RX_STOP_PG NE_STOP_PG //0x80
/* Bits in EN0_ISR - Interrupt status register (RD WR) */
#define ENISR_RX 0x01 /* Receiver, no error */
#define ENISR_TX 0x02 /* Transceiver, no error */
#define ENISR_RX_ERR 0x04 /* Receiver, with error */
//接收数据包出错。做重新设置BNRY＝CURR处理。
#define ENISR_TX_ERR 0x08 /* Transmitter, with error */
//由于冲突次数过多，发送出错。做重发处理
#define ENISR_OVER 0x10 /* Receiver overwrote the ring */
/* Gap area of receiver ring buffer was disappeared */
//网卡内存溢出。做软件重启网卡处理。见手册。
#define ENISR_COUNTERS 0x20 /* Counters need emptying */
/* MSB of network tally counter became 1 */
//出错计数器中断，屏蔽掉（屏蔽用IMR寄存器）。
#define ENISR_RDC 0x40 /* remote dma complete */
//屏蔽掉。轮询等待DMA结束。
#define ENISR_RESET 0x80 /* Reset completed */
//网卡Reset，屏蔽掉。
#define ENISR_ALL 0x3f /* 3f Interrupts we will enable */
/* RST RDC CNT OVW TXE RXE PTX PRX */
/* Bits in EN0_RXCR - RX configuration reg */
//#define ENRXCR_RXCONFIG 0x04 /* EN0_RXCR: broadcasts,no multicast,errors */
#define ENRXCR_RXCONFIG 0x00 /* EN0_RXCR: only unicast */
#define ENRXCR_CRC 0x01 /* Save error packets(admit) */
#define ENRXCR_RUNT 0x02 /* Accept runt pckt(below 64bytes) */
#define ENRXCR_BCST 0x04 /* Accept broadcasts when 1 */
#define ENRXCR_MULTI 0x08 /* Multicast (if pass filter) when 0 */
#define ENRXCR_PROMP 0x10 /* Promiscuous physical addresses when 1*/
/* when 0,accept assigned PAR0~5 address */
#define ENRXCR_MON 0x20 /* Monitor mode (no packets rcvd) */
/* Bits in EN0_TXCR - TX configuration reg */
#define ENTXCR_TXCONFIG 0x00 /* Normal transmit mode */
#define ENTXCR_CRC 0x01 /* inhibit CRC,do not append crc when 1 */
#define ENTXCR_LOOP 0x02 /* set internal loopback mode ? */
#define ENTXCR_LB01 0x06 /* encoded loopback control ? */
#define ENTXCR_ATD 0x08 /* auto tx disable */
/* when 1, if specified multicast packet was received, disable transmit */
#define ENTXCR_OFST 0x10 /* collision offset enable */
/* selection of collision algorithm. When 0, gererally back-off algorithm select */
#endif /* _NE2K_H_ */
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