dm9000x.c

S3C2410硬件平台的LINUX DM9000AE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             
*/
#if defined(MODVERSIONS)
#include <linux/modversions.h>
#endif
				
#include <linux/module.h>
//#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/version.h>
//#include <asm/dma.h>
#include <linux/spinlock.h>
//#include <asm/init.h>
#include <linux/init.h>   //modify asm/init.h as linux/init.h
#include <linux/delay.h>
//#include <asm/coldfire.h>  //note
//#include <asm/mcfsim.h>	//note 
#include <linux/types.h>
#include <linux/mm.h>	
#include <linux/blkdev.h>
#include <asm/io.h>

#undef outb
#undef outw
#undef inb
#undef inw
/* HHTECH  DMA */
#define MBAR_ADDR       0x10000000
#define MBAR2_ADDR      0x80000000
#define MCF5249_MPARK		0x0C
#define MCF5249_DMAROUTE	0x188

#define MCF5249_DSAR2		0x380		
#define MCF5249_DDAR2		0x384
#define MCF5249_DCR2		0x388
#define MCF5249_DBCR2		0x38C
#define MCF5249_DSR2		0x390		
#define MCF5249_DIVR2		0x394		

#define MCF5249_DSAR3		0x3C0		
#define MCF5249_DDAR3		0x3C4
#define MCF5249_DCR3		0x3C8
#define MCF5249_DBCR3		0x3CC
#define MCF5249_DSR3		0x3D0		
#define MCF5249_DIVR3		0x3D4		

#define DCR_START		0x00010000
#define DSR_DONE		0x01


/* Board/System/Debug information/definition ---------------- */

#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_BASE_ADDR_ETH1	0x08000000  //nGCS1
#define DM9000_BASE_ADDR_ETH2   0x40000000
#define DM9000_BASE_ADDR_ETH3   0x50000000

#define DM9000_MIN_IO_ETH1	DM9000_BASE_ADDR_ETH1+0x300
#define DM9000_MIN_IO_ETH2      DM9000_BASE_ADDR_ETH2+0x300
#define DM9000_MIN_IO_ETH3      DM9000_BASE_ADDR_ETH3+0x300

#define DM9000_MAX_IO	DM9000_BASE_ADDR+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

#define DMFE_TIMER_WUT  jiffies+(HZ*2)	/* timer wakeup time : 2 second */
#define DMFE_TX_TIMEOUT (HZ*2)	/* tx packet time-out time 1.5 s" */

#undef DM9000_DEBUG	
//#define DM9000_DEBUG

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

#if LINUX_VERSION_CODE < 0x20300
#define DEVICE device
#else
#define DEVICE net_device
#endif

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 {
	struct 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
} board_info_t;

/* Global variable declaration ----------------------------- */
static int dmfe_debug = 1;
static struct 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;

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 dmfe_probe(struct DEVICE *);
static int dmfe_open(struct DEVICE *);
static int dmfe_start_xmit(struct sk_buff *, struct DEVICE *);
static int dmfe_stop(struct 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(struct 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 *, struct pt_regs *);
static void dmfe_timer(unsigned long);
static void dmfe_init_dm9000(struct 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(struct DEVICE *, board_info_t *);
static void dm9000_hash_table(struct DEVICE *);

/* DM9000 network baord routine ---------------------------- */

/*#define ADDR(addr) for swap upper and low eight bit*/
//#define DATA(a) ( ( (a&0xff00)>>8 ) | ( (a&0x00ff)<<8 ) )
#define DATA(a) (a) //Don't swap Because s3c2410 use little endian
//#define DATA(a) (a)
//#define DELAY   udelay(1000000)
#define SWAP_HARDWARE
//inline void outw(unsigned short value, unsigned long addr)
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	
}


/*
  Search DM9000 board, allocate space and register it
*/
static unsigned char eth1_mac_addr[6] = {0x00, 0x13, 0xf6, 0x6c, 0x87, 0x89};
static unsigned char eth2_mac_addr[6] = {0x00, 0x13, 0xf6, 0x6c, 0x87, 0x90};
static unsigned char eth3_mac_addr[6] = {0x00, 0x13, 0xf6, 0x6c, 0x87, 0x91};
int __init dmfe_probe(struct DEVICE *dev)
{	
        ////////////////////////////////////////
	//i2c_data add by zy
	//unsigned int rd_adr=0x0;
	//unsigned int rd_num=0x06;
	//unsigned char * get_data;
	//unsigned char buff[64];
	static char sEthernet[5];
	struct board_info *db;    /* Point a board information structure */
	u32 id_val;
	u32 iobase; // = DM9000_MIN_IO;
	u16 i, dm9000_count = 0;
	u8  irqline;
	//printk("BWSCON=%x\n",BWSCON);
	//BANKCON1=0xffff;
	
	BWSCON|=0xc0;
	//printk("BWSCON2=%x\n",BWSCON);
	GPFCON |= 0x2; //EINT0 from PORT F control register
	EXTINT0 |= 0x4; //EINT0 Rising edge triggered
	INTMSK &= 0xfff7; //EINT0 Enable
	//INTPND |= 0x1;
	
	
	//printk("******** dm9000 probe dev->name=%s\n",dev->name);
	if(strcmp(dev->name,sEthernet)!=0)strcpy(sEthernet,dev->name);
	else return;
	if(strcmp(dev->name,"eth0")==0)
	{	
		//printk("eth0 network interface found ");
		iobase = ioremap(DM9000_MIN_IO_ETH1,0x400);
		//printk("iobase=%x\n",iobase);
		dev->irq = 0;   //EINT0
                for (i=0; i<6; i++)
		{
	                  dev->dev_addr[i] = eth1_mac_addr[i];//db->srom[i];
	          //        printk("%02X:",dev->dev_addr[i]);
	        }
		//printk("\n");
		
	}else
	if(strcmp(dev->name,"eth1")==0)
	{	
		//printk("eth2 network interface found ");
		iobase = DM9000_MIN_IO_ETH2;
		dev->irq = 90;  //INT5
                for (i=0; i<6; i++)
		{
	                   dev->dev_addr[i] = eth2_mac_addr[i];//db->srom[i];
	          //         printk("%02X:",dev->dev_addr[i]);
	         }
		//printk("\n");
		
	}else	
	if(strcmp(dev->name,"eth3")==0)
	{	
		//printk("eth3 network interface found ");
		iobase = DM9000_MIN_IO_ETH3;
		dev->irq = 91;  //INT6
                for (i=0; i<6; i++)
		{