dm9000x.c

S3C2410硬件平台下的UBOOT下的DM9000E驱动

/*
  dm9000.c: Version 1.1 09/11/2001
  
        A Davicom DM9000 ISA NIC fast Ethernet driver for Linux.
	Copyright (C) 1997  Sten Wang

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

  Author: Sten Wang, 886-3-5798797-8517, E-mail: [e-mail]
  Date:   10/28,1998

  (C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved.


V0.11	06/20/2001	REG_0A bit3=1, default enable BP with DA match
	06/22/2001 	Support DM9801 progrmming	
	 	 	E3: R25 = ((R24 + NF) & 0x00ff) | 0xf000
		 	E4: R25 = ((R24 + NF) & 0x00ff) | 0xc200
		     		R17 = (R17 & 0xfff0) | NF + 3
		 	E5: R25 = ((R24 + NF - 3) & 0x00ff) | 0xc200
		     		R17 = (R17 & 0xfff0) | NF
v1.00               modify by simon 2001.9.5
                        change for kernel 2.4.x    
v1.1   11/09/2001      fix force mode bug             
*/


/* Board/System/Debug information/definition ---------------- */
#if 0
typedef unsigned long ulong;
typedef unsigned char uchar;
typedef unsigned char u8;
typedef unsigned long u32;
typedef unsigned short ushort;
typedef unsigned short u16;
typedef unsigned int uint;
#endif
#include <s3c2410.h>
#include <common.h>
#include <command.h>
//#include <asm/types.h>
#include <config.h>
#include "net.h"
#include <malloc.h>
//#include <type.h>
#if 0
#include "type.h"
#include "net.h"
#include <irqlock.h>
#include <coldfire.h>
#include <mcfsim.h>
#include <dmfeio.h>
#include <delay.h>
#endif
#define DM9000_ID	0x90000A46

#define DM9000_REG00	0x00
#define DM9000_REG05	0x30	/* SKIP_CRC/SKIP_LONG */
#define DM9000_REG08	0x27
#define DM9000_REG09	0x38
#define DM9000_REG0A	0x08
#define DM9000_REGFF	0x83	/* IMR */

#define DM9000_PHY	0x40	/* PHY address 0x01 */
#define DM9000_PKT_MAX	1536	/* Received packet max size */
#define DM9000_PKT_RDY	0x01	/* Packet ready to receive */

#define DM9000_ADDR_BASE	0x08000000  //nGCS1

#define DM9000_MIN_IO	DM9000_ADDR_BASE+0x300
#define DM9000_MAX_IO	DM9000_ADDR_BASE+0x370
#define DM9000_INT_MII	0x00
#define DM9000_EXT_MII	0x80

#define DM9000_VID_L	0x28
#define DM9000_VID_H	0x29
#define DM9000_PID_L	0x2A
#define DM9000_PID_H	0x2B

#define DM9801_NOISE_FLOOR	0x08
#define DM9802_NOISE_FLOOR	0x05

#define DMFE_SUCC       0
#define MAX_PACKET_SIZE 1514
#define DMFE_MAX_MULTICAST 14


#if defined(DM9000_DEBUG)
#define DMFE_DBUG(dbug_now, msg, vaule) printf("dmfe: %s %x\n", msg, vaule)
#else
#define DMFE_DBUG(dbug_now, msg, vaule) 
#endif


typedef struct eth_device DEVICE;

#define printk printf

enum DM9000_PHY_mode {
	DM9000_10MHD = 0, DM9000_100MHD = 1, DM9000_10MFD = 4,
	DM9000_100MFD = 5, DM9000_AUTO = 8, DM9000_1M_HPNA =0x10 };

enum DM9000_NIC_TYPE {
	FASTETHER_NIC = 0, HOMERUN_NIC = 1, LONGRUN_NIC = 2 };

/* Structure/enum declaration ------------------------------- */
typedef struct board_info {
	DEVICE *next_dev;	/* next device */

	u32 runt_length_counter;	/* counter: RX length < 64byte */ 
	u32 long_length_counter;	/* counter: RX length > 1514byte */ 
	u32 reset_counter;		/* counter: RESET */ 
	u32 reset_tx_timeout;		/* RESET caused by TX Timeout */ 
	u32 reset_rx_status;		/* RESET caused by RX Statsus wrong */ 

	u32 ioaddr;			/* Register I/O base address */
	u32 io_data;			/* Data I/O address */
	u16 irq;			/* IRQ */

	u16 tx_pkt_cnt;
	u16 queue_pkt_len;
	u16 queue_start_addr;
	u16 dbug_cnt;
	u8 reg0, reg5, reg8, reg9, rega;	/* registers saved */
	u8 op_mode;			/* PHY operation mode */
	u8 io_mode;			/* 0:word, 2:byte */
	u8 phy_addr;
	u8 link_failed;			/* Ever link failed */
	u8 device_wait_reset;		/* device state */
	u8 nic_type;			/* NIC type */
//	struct timer_list timer;
	/*struct enet_statistics stats;*/ /* statistic counter */ 
        //mark by simon 2001.9.4
//	struct net_device_stats stats; // add by simon 2001.9.4 for kernel 2.4
	unsigned char srom[128];
//	spinlock_t lock; //add by simon 2001.9.4
	u16 rx_pkt_count;
} board_info_t;
#if 0
struct eth_device {
        char name[NAMESIZE];
        unsigned char enetaddr[6];
			        int iobase;
				        int state;

					        int  (*init) (struct eth_device*, bd_t*);
						        int  (*send) (struct eth_device*, volatile void* pachet, int length);
							        int  (*recv) (struct eth_device*);
								        void (*halt) (struct eth_device*);

									        struct eth_device *next;
										        void *priv;
};
#endif
/* Global variable declaration ----------------------------- */
static int dmfe_debug = 0;
static DEVICE * dmfe_root_dev = NULL;      /* First device */

/* For module input parameter */
static int debug = 0;
static int mode = DM9000_AUTO;
static int media_mode = DM9000_AUTO;
static u8 reg5 = DM9000_REG05;
static u8 reg8 = DM9000_REG08;
static u8 reg9 = DM9000_REG09;
static u8 rega = DM9000_REG0A;
static u8 nfloor = 0;

static unsigned char enetaddr[6] = { 0x00, 0x22, 0x12, 0x34, 0x56, 0x78 };

unsigned long CrcTable[256] = {
   0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL,
   0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L,
   0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L,
   0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L,
   0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL,
   0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L,
   0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL,
   0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L,
   0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L,
   0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL,
   0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L,
   0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L,
   0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L,
   0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL,
   0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L,
   0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL,
   0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL,
   0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L,
   0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L,
   0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L,
   0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL,
   0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L,
   0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL,
   0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L,
   0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L,
   0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL,
   0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L,
   0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L,
   0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L,
   0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL,
   0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L,
   0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL,
   0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL,
   0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L,
   0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L,
   0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L,
   0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL,
   0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L,
   0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL,
   0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L,
   0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L,
   0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL,
   0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L,
   0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L,
   0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L,
   0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL,
   0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L,
   0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL,
   0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL,
   0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L,
   0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L,
   0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L,
   0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL,
   0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L,
   0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL,
   0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L,
   0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L,
   0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL,
   0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L,
   0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L,
   0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L,
   0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL,
   0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L,
   0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL
};

/* function declaration ------------------------------------- */
int eth_init/*dmfe_probe*/();
static int dmfe_open(DEVICE *);
static int dmfe_recv(DEVICE *dev);
static int dmfe_start_xmit(DEVICE *, volatile void* packet, int length);
//static void dmfe_stop(DEVICE *);
//static struct enet_statistics * dmfe_get_stats(struct DEVICE *); make by simon 2001.9.4 for kernel 2.4
static struct net_device_stats * dmfe_get_stats(DEVICE *); // add by simon 2001.94 for kernel 2.4
//static int dmfe_do_ioctl(struct DEVICE *, struct ifreq *, int);
static void dmfe_interrupt(int , void *);
static void dmfe_timer(unsigned long);
static void dmfe_init_dm9000(DEVICE *);
static unsigned long cal_CRC(unsigned char *, unsigned int, u8);
static u8 ior(board_info_t *, int);
static void iow(board_info_t *, int, u8);
static u16 phy_read(board_info_t *, int);
static void phy_write(board_info_t *, int, u16);
static u16 read_srom_word(board_info_t *, int);
static void dmfe_packet_receive(DEVICE *);
static void dm9000_hash_table(DEVICE *);

#define SWAP_HARDWARE

/* DM9000 network baord routine ---------------------------- */
//extern void *malloc(int len);
//extern void free(void *p);
#define DATA(a) (a) //Don't swap Because s3c2410 use little endian
inline void outw(unsigned short value, unsigned long addr)
{
#ifndef SWAP_HARDWARE
        unsigned char a,b=0;
	unsigned short c=DATA(value);
        int i,j=7,k=1,m=128;
	a=c & 0x00ff;
        for(i=1;i<=4;i++)
        {
                b=b|((a&k)<<j) | ((a&m)>>j);
                k*=2;
                m/=2;
                j--;
                j--;
        }
        *(volatile unsigned short *)(addr)=b|(c&0xff00) ;/*((unsigned short)b)<<8;*/
#else
	*(volatile unsigned short*)addr =  DATA(value);
#endif	
}

//inline void outb(unsigned char value, unsigned long addr)
inline void outb(unsigned char value, unsigned long addr)
{
#ifndef SWAP_HARDWARE
        unsigned char a=value,b=0;
        int i,j=7,k=1,m=128;
        for(i=1;i<=4;i++)
        {
                b=b|((a&k)<<j) | ((a&m)>>j);
                k*=2;
                m/=2;
                j--;
                j--;
        }
        *(volatile unsigned short *)(addr)=/*DATA((*/b /*) & 0x00ff)*/;/*((unsigned short)b)<<8;*/
#else

	*(volatile unsigned short*)addr = (value & 0x00ff);
#endif	
}

inline unsigned char inb(unsigned long addr)
{
#ifndef SWAP_HARDWARE
        unsigned char b=0,a=(*(volatile unsigned short *)(addr)) &0x00ff;
        int i,j=7,k=1,m=128;
        for(i=1;i<=4;i++)
        {
                b=b|((a&k)<<j) | ((a&m)>>j);
                k*=2;
                m/=2;
                j--;
                j--;
        }
        return b;
#else
//	return (((*(volatile unsigned short *)(p))) &0x00ff);
					
	unsigned short val;
	val = *(volatile unsigned short*)addr;
	return (unsigned char)( val & 0x00ff );	
	
#endif	

}
inline unsigned short inw(unsigned long addr)
{
#ifndef SWAP_HARDWARE
        unsigned char b=0,a;
	unsigned short c=DATA((*(volatile unsigned short *)(addr)));
        int i,j=7,k=1,m=128;
	a=c & 0x00ff;
        for(i=1;i<=4;i++)
        {
                b=b|((a&k)<<j) | ((a&m)>>j);
                k*=2;
                m/=2;
                j--;
                j--;
        }
        return b|(c&0xff00);
#else

	unsigned short val;
	
	val = *(volatile unsigned short*)addr; 
	return (DATA(val));
#endif	
}


struct rx_buff {
	u16 rx_busy[PKTBUFSRX];
	u32 rx_pkt_len[PKTBUFSRX];
	int rxIdx;
};

static struct rx_buff rx_pkt;
//extern void memset(void*,int,int);
#if 0
void outb(char byte, unsigned long addr)
{
}
unsigned char inb(unsigned long addr)
{
}
void outw(unsigned short value, unsigned long addr)
{
}
unsigned short inw(unsigned long addr)
{
}
void delay(int ms)
{
}
#endif

/*
  Search DM9000 board, allocate space and register it
*/
struct board_info *db;    /* Point a board information structure */
DEVICE *dev;
u32 iobase = DM9000_MIN_IO;

void cs8900_get_enetaddr (uchar *addr)
{
	 int i;
         /* Set Node Address */
         for (i=0; i<6; i++)
                   addr[i] = enetaddr[i];//db->srom[i];	
}	
int eth_init/*dmfe_probe*/()
{
	
//	struct board_info *db;    /* Point a board information structure */
//	DEVICE *dev;
	//struct eth_device *dev,dev_t;
	u32 id_val;
//	u32 iobase = DM9000_MIN_IO;
	u16 oft,i, dm9000_count = 0;

	DMFE_DBUG(0, "dmfe_probe()",0);

//     printk("eth_init\n");
	//   enable_interrupts();
    rSRCPND = 0xffffffff;
    rINTPND = 0xffffffff;
    rSUBSRCPND = 0x7ff;
    rEINTPEND = 0x00fffff0;    
	rBANKCON1=0xffff;
        rBWSCON|=0xc0;
        rGPFCON |= 0x2; //EINT0 from PORT F control register
        rEXTINT0 |= 0x4; //EINT0 Rising edge triggered
        rINTMSK &= 0xfff7; //EINT0 Enable
	rINTMOD = 0x1;
//	printk("dm9000 init\n");
	/* Search All DM9000 NIC */
//	do {
		outb(DM9000_VID_L, iobase);
		id_val = inb(iobase + 4);
		outb(DM9000_VID_H, iobase);
		id_val |= inb(iobase + 4) << 8;
		outb(DM9000_PID_L, iobase);
		id_val |= inb(iobase + 4) << 16;
		outb(DM9000_PID_H, iobase);
		id_val |= inb(iobase + 4) << 24;

		if (id_val == DM9000_ID) {
			printf("<DM9000> I/O: %x, VID: %x \n", iobase, id_val);
			dm9000_count++;

#if 0
			/* Init network device */
			dev =malloc(sizeof( *dev)); 
			//memset(dev,0,sizeof(dev_t));
			memset(dev,0,sizeof(*dev));

			/* Allocated board information structure */
			db = malloc(sizeof(*db));
			memset(db, 0, sizeof(*db));
			dev->priv = db;	/* link device and board info */
			db->next_dev = dmfe_root_dev;
			dmfe_root_dev = dev;
			db->ioaddr = iobase;
			db->io_data = iobase + 4;
			db->irq = 166;

			/* driver system function */
			dev->iobase = iobase;
			dev->init = dmfe_open;
			dev->send = dmfe_start_xmit;
			//dev->halt = dmfe_stop;
			dev->recv = dmfe_recv;
#endif
			/* Read SROM content */
	//		for (i=0; i<64; i++)
	//			((u16 *)db->srom)[i] = read_srom_word(db, i);

			/* Set Node Address */
			for (i=0; i<6; i++)
				dev->enetaddr[i] = enetaddr[i];//db->srom[i];