sed.c

ADAM2 sources (modified by Oleg)

/*-----------------------------------------------------------------------------*/
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/*  Application Specific Products, MS 8650                                     */
/*  c/o ADAM2 Application Manager                                              */
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/*-----------------------------------------------------------------------------*/
/* 																			   */
/* Ethernet Driver. 														   */
/* A Very Simple set of ethernet driver primitives.  The ethernet (3com Mbus)  */
/* interface is controlled by busy-waiting, the application is handed the      */
/* location of on-board packet buffers, and allowed to fill in the             */
/* transmit buffer directly.  The interface is entirely blocking.              */
/*  																		   */
/* Written March, 1986 by Geoffrey Cooper 									   */
/* 																			   */
/* Copyright (C) 1986, IMAGEN Corporation 									   */
/*  "This code may be duplicated in whole or in part provided that [1] there   */
/*   is no commercial gain involved in the duplication, and [2] that this      */
/*   copyright notice is preserved on all copies.  Any other duplication       */
/*   requires written notice of the author."                                   */
/*  																		   */
/* Primitives: 																   */
/*  sed_Init()  -- Initialize the package 									   */
/*  sed_FormatPacket( destEAddr ) => location of transmit buffer               */
/*  sed_Send( pkLength ) -- send the packet that is in the transmit buffer     */ 
/*  sed_Receive( recBufLocation ) -- enable receiving packets.                 */
/*  sed_IsPacket() => location of packet in receive buffer                     */
/*  sed_CheckPacket( recBufLocation, expectedType )                            */
/*  sed_shutdown(); 														   */
/* 																			   */
/* Global Variables: 														   */
/*  sed_lclEthAddr -- Ethernet address of this host. 						   */
/*  sed_ethBcastAddr -- Ethernet broadcast address.                            */    
/*-----------------------------------------------------------------------------*/

#include "_stdio.h"
#include "tinyip.h"
#include "emacphy.h"
#include "hw.h"
#include "env.h"
#include "support.h"

#define E10P_MIN        60              /* Minimum Ethernet packet size */

#define TCB_ENTRIES      16
#define RCB_ENTRIES      32
#define BUFFER_SIZE    1518
#define TX_COMP_ENTRIES  16
#define RX_COMP_ENTRIES  32

#define DISABLE     0x80000000
#define CLRP        0x20000000
#define TXPACE      0x00000100
#define NO_LOOP     0x08000000
#define FULL_DUPLEX 0x00000001
#define SPEED_100   0x00000002
#define CAF         0x00000400
#define CMF         0x00002000
#define PEFCE       0x00080000

#define DMACONFIG      	(*(volatile unsigned *)(emacbase+0x000))
#define INTSTS         	(*(volatile unsigned *)(emacbase+0x004))
#define INTMASK        	(*(volatile unsigned *)(emacbase+0x008))

#define WRAPCLK        	(*(volatile unsigned *)(emacbase+0x340))
#define STATSBASE      	(*(volatile unsigned *)(emacbase+0x400))
 
#define TCRPTR         	(*(volatile unsigned *)(emacbase+0x100))
#define TCRSIZE        	(*(volatile unsigned *)(emacbase+0x104))
#define TCRINTTHRESH   	(*(volatile unsigned *)(emacbase+0x108))
#define TCRTOTENT      	(*(volatile unsigned *)(emacbase+0x10C))
#define TCRFREEENT     	(*(volatile unsigned *)(emacbase+0x110))
#define TCRPENDENT     	(*(volatile unsigned *)(emacbase+0x114))
#define TCRENTINC      	(*(volatile unsigned *)(emacbase+0x118))
#define TXISRPACE      	(*(volatile unsigned *)(emacbase+0x11c))

#define TDMASTATE0     	(*(volatile unsigned *)(emacbase+0x120))
#define TDMASTATE1     	(*(volatile unsigned *)(emacbase+0x124))
#define TDMASTATE2     	(*(volatile unsigned *)(emacbase+0x128))
#define TDMASTATE3     	(*(volatile unsigned *)(emacbase+0x12C))
#define TDMASTATE4     	(*(volatile unsigned *)(emacbase+0x130))
#define TDMASTATE5     	(*(volatile unsigned *)(emacbase+0x134))
#define TDMASTATE6     	(*(volatile unsigned *)(emacbase+0x138))
#define TDMASTATE7     	(*(volatile unsigned *)(emacbase+0x13C))
#define TXPADDCNT      	(*(volatile unsigned *)(emacbase+0x140))
#define TXPADDSTART    	(*(volatile unsigned *)(emacbase+0x144))
#define TXPADDEND      	(*(volatile unsigned *)(emacbase+0x148))
#define TXQFLUSH       	(*(volatile unsigned *)(emacbase+0x14C))
 
#define RCRPTR         	(*(volatile unsigned *)(emacbase+0x200))
#define RCRSIZE        	(*(volatile unsigned *)(emacbase+0x204))
#define RCRINTTHRESH   	(*(volatile unsigned *)(emacbase+0x208))
#define RCRTOTENT      	(*(volatile unsigned *)(emacbase+0x20C))
#define RCRFREEENT     	(*(volatile unsigned *)(emacbase+0x210))
#define RCRPENDENT     	(*(volatile unsigned *)(emacbase+0x214))
#define RCRENTINC      	(*(volatile unsigned *)(emacbase+0x218))
#define RXISRPACE      	(*(volatile unsigned *)(emacbase+0x21c))
 
#define RDMASTATE0     	(*(volatile unsigned *)(emacbase+0x220))
#define RDMASTATE1     	(*(volatile unsigned *)(emacbase+0x224))
#define RDMASTATE2     	(*(volatile unsigned *)(emacbase+0x228))
#define RDMASTATE3     	(*(volatile unsigned *)(emacbase+0x22C))
#define RDMASTATE4     	(*(volatile unsigned *)(emacbase+0x230))
#define RDMASTATE5     	(*(volatile unsigned *)(emacbase+0x234))
#define RDMASTATE6     	(*(volatile unsigned *)(emacbase+0x238))
#define RDMASTATE7     	(*(volatile unsigned *)(emacbase+0x23C))
#define FBLADDCNT      	(*(volatile unsigned *)(emacbase+0x240))
#define FBLADDSTART    	(*(volatile unsigned *)(emacbase+0x244))
#define FBLADDEND      	(*(volatile unsigned *)(emacbase+0x248))
#define RXONOFF        	(*(volatile unsigned *)(emacbase+0x24C))
 
#define FBL0NEXTD      	(*(volatile unsigned *)(emacbase+0x280))
#define FBL0LASTD      	(*(volatile unsigned *)(emacbase+0x284))
#define FBL0COUNTD     	(*(volatile unsigned *)(emacbase+0x288))
#define FBL0BUFSIZE    	(*(volatile unsigned *)(emacbase+0x28C))
 
#define MACCONTROL     	(*(volatile unsigned *)(emacbase+0x300))
#define MACSTATUS      	(*(volatile unsigned *)(emacbase+0x304))
#define MACADDRHI      	(*(volatile unsigned *)(emacbase+0x308))
#define MACADDRLO      	(*(volatile unsigned *)(emacbase+0x30C))
#define MACHASH1       	(*(volatile unsigned *)(emacbase+0x310))
#define MACHASH2       	(*(volatile unsigned *)(emacbase+0x314))
 
#define WRAPCLK        	(*(volatile unsigned *)(emacbase+0x340))
#define BOFTEST        	(*(volatile unsigned *)(emacbase+0x344))
#define PACTEST        	(*(volatile unsigned *)(emacbase+0x348))
#define PAUSEOP        	(*(volatile unsigned *)(emacbase+0x34C))
 
#define MDIOCONTROL    	(*(volatile unsigned *)(emacbase+0x380))
#define MDIOUSERACCESS 	(*(volatile unsigned *)(emacbase+0x384))
#define MDIOACK        	(*(volatile unsigned *)(emacbase+0x388))
#define MDIOLINK       	(*(volatile unsigned *)(emacbase+0x38C))
#define MDIOMACPHY     	(*(volatile unsigned *)(emacbase+0x390))

#define SAVE1 	(*(volatile unsigned *)(0x9401f000))
#define SAVE2 	(*(volatile unsigned *)(0x9401f004))
#define SAVE3 	(*(volatile unsigned *)(0x9401f008))
#define SAVE4 	(*(volatile unsigned *)(0x9401f00c))
#define SAVE5 	(*(volatile unsigned *)(0x9401f010))
#define SAVE6 	(*(volatile unsigned *)(0x9401f014))
#define SAVE7 	(*(volatile unsigned *)(0x9401f018))
#define SAVE8 	(*(volatile unsigned *)(0x9401f01c))

#ifdef ACPEP 
#define	ACPEP_EPLD_RESET_CTRL_REG (*(volatile short *)(0x9C800004))
#define	ACPEP_EPLD_RESET_MIIA 0x0080
#define	ACPEP_EPLD_RESET_MIIB 0x0040
#endif	

#define en10pages        	((en10size) >> pageshift)
#define LINK_TIMEOUT		5
#define TEST_TIMEOUT 		120000

#define NORMAL				0
#define INTERNAL_LOOP 		1
#define EXTERNAL_LOOP 		2
#define WIRE_LOOP     		3

#define TX_BUF_COUNT     	25
#define FLIP_TBUF_INDEX  	0 	/*16 at which point it flips to SDRAM*/
#define MIN_FRAME_SIZE   	64
#define MAX_FRAME_SIZE 		1518
#define TX_BURST_COUNT   	11
#define SEQ              	16

bit32u emacbase;
bit32u PhyState;

int loops, steps;
int tx_frame_seq, rx_fram_seq, tx_buf_index;
volatile unsigned *tx_buf[TX_BUF_COUNT]; 

void *GetRxPacket(void);

struct txcompring_s
  {
  int status;
  int fblid_noofbufs;
  int sof_list;
  int eof_list;
  };

struct txcompring_s *TxCompPtr;
int TxCompRingMask;
int TxCompRingBase;
int txcompring_size;
int txcompring_index;

struct rxcompring_s
  {
  int status;
  int sof_list;
  int eof_list;
  int flen_errs;
  };

struct rxcompring_s *RxCompPtr;
int RxCompRingMask;
int RxCompRingBase;
int rxcompring_size;
int rxcompring_index;

struct rcb_s
  {
  int size;
  int BufPtr;
  int Res1;
  int Res2;
  int *DatPtr;
  int Res3;
  int Res4;
  int Res5;
  }rcb_array_i[RCB_ENTRIES];

struct rcb_s *rcb_array,*CurrentRcb;

volatile struct tcb_s
  {
  int mode;
  int BufPtr;
  int Res1;
  int DO_FBLID;
  void *RcbPtr;
  int Res3;
  int Res4;
  int Res5;
  }tcb_array_i[TCB_ENTRIES];

struct tcb_s *tcb_array;

int rcb_index, rcb_pending;
int tcb_index, tcb_pending;

octet *sed_va;                          /* virtual address of ethernet card */
BOOL sed_respondARPreq;                 /* controls responses to ARP req's */
char bufAinUse, bufBinUse;              /* tell whether bufs are in use */

/* 
 *  Initialize the Ethernet Interface, and this package.  Enable input on
 * both buffers.
 */
void InitRcb(int size)
  {
  int i;
  int *pTmp;

  rcb_index=0;