root/drivers/net/ni65.c

/* [previous][next][first][last][top][bottom][index][help] */

DEFINITIONS

This source file includes following definitions.
  1. ni65_open
  2. ni65_close
  3. ni65_probe
  4. ni65_probe1
  5. am7990_reinit
  6. ni65_interrupt
  7. xmit_intr
  8. recv_intr
  9. ni65_send_packet
  10. ni65_get_stats
  11. set_multicast_list

   1 /*
   2  * ni6510 (am7990 'lance' chip) driver for Linux-net-3 by MH
   3  * Alphacode v0.33 (94/08/22) for 1.1.47 (or later)
   4  *
   5  * ----------------------------------------------------------
   6  * WARNING: DOESN'T WORK ON MACHINES WITH MORE THAN 16MB !!!!
   7  * ----------------------------------------------------------
   8  *
   9  * copyright (c) 1994 M.Hipp
  10  *
  11  * This is an extension to the Linux operating system, and is covered by the
  12  * same Gnu Public License that covers the Linux-kernel.
  13  *
  14  * comments/bugs/suggestions can be sent to:
  15  *    Michael Hipp
  16  *    email: mhipp@student.uni-tuebingen.de
  17  *
  18  * sources:
  19  *  some things are from the 'ni6510-packet-driver for dos by Russ Nelson'
  20  *  and from the original drivers by D.Becker
  21  */
  22 
  23 /*
  24  * Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
  25  *
  26  * July.16: fixed bugs in recv_skb and skb-alloc stuff  (MH)
  27  */
  28 
  29 /*
  30  * known BUGS: 16MB limit
  31  */
  32 
  33 #include <linux/kernel.h>
  34 #include <linux/sched.h>
  35 #include <linux/string.h>
  36 #include <linux/ptrace.h>
  37 #include <linux/errno.h>
  38 #include <linux/ioport.h>
  39 #include <linux/malloc.h>
  40 #include <linux/interrupt.h>
  41 #include <asm/bitops.h>
  42 #include <asm/io.h>
  43 #include <asm/dma.h>
  44 
  45 #include <linux/netdevice.h>
  46 #include <linux/etherdevice.h>
  47 #include <linux/skbuff.h>
  48 
  49 #include "ni65.h"
  50 
  51 /************************************
  52  * skeleton-stuff
  53  */
  54 
  55 #ifndef HAVE_PORTRESERVE
  56 #define check_region(ioaddr, size)              0
  57 #define request_region(ioaddr, size,name)       do ; while (0)
  58 #endif
  59 
  60 #ifndef NET_DEBUG
  61 #define NET_DEBUG 2
  62 #endif
  63 /*
  64 static unsigned int net_debug = NET_DEBUG;
  65 */
  66 
  67 #define NI65_TOTAL_SIZE    16
  68 
  69 #define SA_ADDR0 0x02
  70 #define SA_ADDR1 0x07
  71 #define SA_ADDR2 0x01
  72 #define CARD_ID0 0x00
  73 #define CARD_ID1 0x55
  74 
  75 /*****************************************/
  76 
  77 #define PORT dev->base_addr
  78 
  79 #define RMDNUM 8
  80 #define RMDNUMMASK 0x6000 /* log2(RMDNUM)<<13 */
  81 #define TMDNUM 4
  82 #define TMDNUMMASK 0x4000 /* log2(TMDNUM)<<13 */
  83 
  84 #define R_BUF_SIZE 1518
  85 #define T_BUF_SIZE 1518
  86 
  87 #define MEMSIZE 8+RMDNUM*8+TMDNUM*8
  88 
  89 #define L_DATAREG 0x00
  90 #define L_ADDRREG 0x02
  91 
  92 #define L_RESET   0x04
  93 #define L_CONFIG  0x05
  94 #define L_EBASE   0x08
  95 
  96 /* 
  97  * to access the am7990-regs, you have to write
  98  * reg-number into L_ADDRREG, then you can access it using L_DATAREG
  99  */
 100 #define CSR0 0x00
 101 #define CSR1 0x01
 102 #define CSR2 0x02
 103 #define CSR3 0x03
 104 
 105 /* if you #define NO_STATIC the driver is faster but you will have (more) problems with >16MB memory */
 106 #undef NO_STATIC
 107 
 108 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
 109                            outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 110 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
 111                        inw(PORT+L_DATAREG))
 112 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 113 
 114 static int   ni65_probe1(struct device *dev,int);
 115 static void  ni65_interrupt(int irq, struct pt_regs *regs);
 116   static void recv_intr(struct device *dev);
 117   static void xmit_intr(struct device *dev);
 118 static int   ni65_open(struct device *dev);
 119    static int am7990_reinit(struct device *dev);
 120 static int   ni65_send_packet(struct sk_buff *skb, struct device *dev);
 121 static int   ni65_close(struct device *dev);
 122 static struct enet_statistics *ni65_get_stats(struct device *);
 123 
 124 static void set_multicast_list(struct device *dev, int num_addrs, void *addrs);
 125 
 126 struct priv 
 127 {
 128   struct init_block ib; 
 129   void *memptr;
 130   struct rmd *rmdhead;
 131   struct tmd *tmdhead;
 132   int rmdnum;
 133   int tmdnum,tmdlast;
 134   struct sk_buff *recv_skb[RMDNUM];
 135   void *tmdbufs[TMDNUM];
 136   int lock,xmit_queued;
 137   struct enet_statistics stats;
 138 }; 
 139 
 140 int irqtab[] = { 9,12,15,5 }; /* irq config-translate */
 141 int dmatab[] = { 0,3,5,6 };   /* dma config-translate */
 142 
 143 /*
 144  * open (most done by init) 
 145  */
 146 
 147 static int ni65_open(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 148 {
 149   if(am7990_reinit(dev))
 150   {
 151     dev->tbusy     = 0;
 152     dev->interrupt = 0;
 153     dev->start     = 1;
 154     return 0;
 155   }
 156   else
 157   {
 158     dev->start = 0;
 159     return -EAGAIN;
 160   }
 161 }
 162 
 163 static int ni65_close(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 164 {
 165   outw(0,PORT+L_RESET); /* that's the hard way */
 166   dev->tbusy = 1;
 167   dev->start = 0;
 168   return 0; 
 169 }
 170 
 171 /* 
 172  * Probe The Card (not the lance-chip) 
 173  * and set hardaddress
 174  */ 
 175 
 176 int ni65_probe(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 177 {
 178   int *port, ports[] = {0x300,0x320,0x340,0x360, 0};
 179   int base_addr = dev->base_addr;
 180 
 181   if (base_addr > 0x1ff)          /* Check a single specified location. */
 182      return ni65_probe1(dev, base_addr);
 183   else if (base_addr > 0)         /* Don't probe at all. */
 184      return ENXIO;
 185 
 186   for (port = ports; *port; port++) 
 187   {
 188     int ioaddr = *port;
 189     if (check_region(ioaddr, NI65_TOTAL_SIZE))
 190        continue;
 191     if( !(inb(ioaddr+L_EBASE+6) == CARD_ID0) || 
 192         !(inb(ioaddr+L_EBASE+7) == CARD_ID1) )
 193        continue;
 194     dev->base_addr = ioaddr;
 195     if (ni65_probe1(dev, ioaddr) == 0)
 196        return 0;
 197   }
 198 
 199   dev->base_addr = base_addr;
 200   return ENODEV;
 201 }
 202 
 203 
 204 static int ni65_probe1(struct device *dev,int ioaddr)
     /* [previous][next][first][last][top][bottom][index][help] */
 205 {
 206   int i;
 207   unsigned char station_addr[6];
 208   struct priv *p; 
 209 
 210   for(i=0;i<6;i++)
 211     station_addr[i] = dev->dev_addr[i] = inb(PORT+L_EBASE+i);
 212 
 213   if(station_addr[0] != SA_ADDR0 || station_addr[1] != SA_ADDR1)
 214   {
 215     printk("%s: wrong Hardaddress \n",dev->name);
 216     return ENODEV;
 217   }
 218 
 219   if(dev->irq == 0) 
 220     dev->irq = irqtab[(inw(PORT+L_CONFIG)>>2)&3];
 221   if(dev->dma == 0)  
 222     dev->dma = dmatab[inw(PORT+L_CONFIG)&3];
 223 
 224   printk("%s: %s found at %#3lx, IRQ %d DMA %d.\n", dev->name,
 225            "network card", dev->base_addr, dev->irq,dev->dma);
 226 
 227   {        
 228     int irqval = request_irq(dev->irq, &ni65_interrupt,0,"ni65");
 229     if (irqval) {
 230       printk ("%s: unable to get IRQ %d (irqval=%d).\n", 
 231                 dev->name,dev->irq, irqval);
 232       return EAGAIN;
 233     }
 234     if(request_dma(dev->dma, "ni65") != 0)
 235     {
 236       printk("%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
 237       free_irq(dev->irq);
 238       return EAGAIN;
 239     }
 240   }
 241   irq2dev_map[dev->irq] = dev;
 242 
 243   /* Grab the region so we can find another board if autoIRQ fails. */
 244         request_region(ioaddr,NI65_TOTAL_SIZE,"ni65");
 245 
 246   p = dev->priv = (void *) kmalloc(sizeof(struct priv),GFP_KERNEL);
 247   memset((char *) dev->priv,0,sizeof(struct priv));
 248 
 249   dev->open               = ni65_open;
 250   dev->stop               = ni65_close;
 251   dev->hard_start_xmit    = ni65_send_packet;
 252   dev->get_stats          = ni65_get_stats;
 253   dev->set_multicast_list = set_multicast_list;
 254 
 255   ether_setup(dev);
 256 
 257   dev->interrupt      = 0;
 258   dev->tbusy          = 0;
 259   dev->start          = 0;
 260 
 261   if( (p->memptr = kmalloc(MEMSIZE,GFP_KERNEL)) == NULL) {
 262     printk("%s: Can't alloc TMD/RMD-buffer.\n",dev->name);
 263     return EAGAIN;
 264   }
 265   if( (unsigned long) (p->memptr + MEMSIZE) & 0xff000000) {
 266     printk("%s: Can't alloc TMD/RMD buffer in lower 16MB!\n",dev->name);
 267     return EAGAIN;
 268   }
 269   p->tmdhead = (struct tmd *) ((( (unsigned long)p->memptr ) + 8) & 0xfffffff8);
 270   p->rmdhead = (struct rmd *) (p->tmdhead + TMDNUM);   
 271 
 272 #ifndef NO_STATIC
 273    for(i=0;i<TMDNUM;i++)
 274    {
 275      if( (p->tmdbufs[i] = kmalloc(T_BUF_SIZE,GFP_ATOMIC)) == NULL) {
 276        printk("%s: Can't alloc Xmit-Mem.\n",dev->name);
 277        return EAGAIN;
 278      }
 279      if( (unsigned long) (p->tmdbufs[i]+T_BUF_SIZE) & 0xff000000) {
 280        printk("%s: Can't alloc Xmit-Mem in lower 16MB!\n",dev->name);
 281        return EAGAIN;
 282      }
 283    }
 284 #endif
 285 
 286    for(i=0;i<RMDNUM;i++)
 287    {
 288      if( (p->recv_skb[i] = dev_alloc_skb(R_BUF_SIZE)) == NULL) {
 289        printk("%s: unable to alloc recv-mem\n",dev->name);
 290        return EAGAIN;
 291      }
 292      if( (unsigned long) (p->recv_skb[i]->data + R_BUF_SIZE) & 0xff000000) {
 293        printk("%s: unable to alloc receive-memory in lower 16MB!\n",dev->name);
 294        return EAGAIN;
 295      }
 296    }
 297 
 298   return 0; /* we've found everything */
 299 }
 300 
 301 /* 
 302  * init lance (write init-values .. init-buffers) (open-helper)
 303  */
 304 
 305 static int am7990_reinit(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 306 {
 307    int i,j;
 308    struct tmd *tmdp;
 309    struct rmd *rmdp;
 310    struct priv *p = (struct priv *) dev->priv;
 311 
 312    p->lock = 0;
 313    p->xmit_queued = 0;
 314 
 315    disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 316    set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 317    enable_dma(dev->dma); 
 318 
 319    outw(0,PORT+L_RESET); /* first: reset the card */
 320    if(inw(PORT+L_DATAREG) != 0x4)
 321    {
 322      printk("%s: can't RESET ni6510 card: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 323      disable_dma(dev->dma);
 324      free_dma(dev->dma);
 325      free_irq(dev->irq);
 326      return 0;
 327    }
 328 
 329    /* here: memset all buffs to zero */
 330 
 331    memset(p->memptr,0,MEMSIZE);
 332 
 333    p->tmdnum = 0; p->tmdlast = 0;
 334    for(i=0;i<TMDNUM;i++)
 335    {
 336      tmdp = p->tmdhead + i;
 337 #ifndef NO_STATIC
 338      tmdp->u.buffer = (unsigned long) p->tmdbufs[i];     
 339 #endif
 340      tmdp->u.s.status = XMIT_START | XMIT_END;
 341    }
 342 
 343    p->rmdnum = 0;
 344    for(i=0;i<RMDNUM;i++)
 345    {
 346      rmdp = p->rmdhead + i;
 347      rmdp->u.buffer = (unsigned long) p->recv_skb[i]->data;
 348      rmdp->u.s.status = RCV_OWN;
 349      rmdp->blen = -R_BUF_SIZE;
 350      rmdp->mlen = 0;
 351    }
 352    
 353    for(i=0;i<6;i++)
 354    {
 355      p->ib.eaddr[i] = dev->dev_addr[i];
 356    }
 357    p->ib.mode = 0;
 358    for(i=0;i<8;i++) 
 359      p->ib.filter[i] = 0;
 360    p->ib.trplow = (unsigned short) (( (unsigned long) p->tmdhead ) & 0xffff);
 361    p->ib.trphigh = (unsigned short) ((( (unsigned long) p->tmdhead )>>16) & 0x00ff) | TMDNUMMASK; 
 362    p->ib.rrplow = (unsigned short) (( (unsigned long) p->rmdhead ) & 0xffff);
 363    p->ib.rrphigh = (unsigned short) ((( (unsigned long) p->rmdhead )>>16) & 0x00ff) | RMDNUMMASK;
 364 
 365    writereg(0,CSR3);  /* busmaster/no word-swap */
 366    writereg((unsigned short) (((unsigned long) &(p->ib)) & 0xffff),CSR1);
 367    writereg((unsigned short) (((unsigned long) &(p->ib))>>16),CSR2);
 368    
 369    writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 370 
 371   /*
 372    * NOW, WE NEVER WILL CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED 
 373    */
 374 
 375     for(i=0;i<5;i++)
 376     {
 377       for(j=0;j<2000000;j++); /* wait a while */
 378       if(inw(PORT+L_DATAREG) & CSR0_IDON) break; /* init ok ? */
 379     }
 380     if(i == 5) 
 381     {
 382       printk("%s: can't init am7990, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 383       disable_dma(dev->dma);
 384       free_dma(dev->dma);
 385       free_irq(dev->irq);
 386       return 0; /* false */
 387     } 
 388 
 389     writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); /* start lance , enable interrupts */
 390 
 391     return 1; /* OK */
 392 }
 393  
 394 /* 
 395  * interrupt handler  
 396  */
 397 
 398 static void ni65_interrupt(int irq, struct pt_regs * regs)
     /* [previous][next][first][last][top][bottom][index][help] */
 399 {
 400   int csr0;
 401   struct device *dev = (struct device *) irq2dev_map[irq];
 402 
 403   if (dev == NULL) {
 404     printk ("net_interrupt(): irq %d for unknown device.\n", irq);
 405     return;
 406   }
 407 
 408   csr0 = inw(PORT+L_DATAREG);
 409   writedatareg(csr0 & CSR0_CLRALL); /* ack interrupts, disable int. */
 410 
 411   dev->interrupt = 1;
 412 
 413   if(csr0 & CSR0_ERR)
 414   {
 415      struct priv *p = (struct priv *) dev->priv;
 416 
 417      if(csr0 & CSR0_BABL)
 418        p->stats.tx_errors++;
 419      if(csr0 & CSR0_MISS)
 420        p->stats.rx_errors++;
 421   }
 422 
 423   if(csr0 & CSR0_RINT) /* RECV-int? */
 424   { 
 425     recv_intr(dev);
 426   }
 427   if(csr0 & CSR0_TINT) /* XMIT-int? */
 428   {  
 429     xmit_intr(dev);
 430   }
 431 
 432   writedatareg(CSR0_INEA);  /* reenable inter. */
 433   dev->interrupt = 0;
 434 
 435   return;
 436 }
 437 
 438 /*
 439  * We have received an Xmit-Interrupt ..
 440  * send a new packet if necessary
 441  */
 442 
 443 static void xmit_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 444 {
 445   int tmdstat;
 446   struct tmd *tmdp;
 447   struct priv *p = (struct priv *) dev->priv;
 448 
 449 #ifdef NO_STATIC
 450   struct sk_buff *skb;
 451 #endif
 452 
 453   while(p->xmit_queued)
 454   {
 455     tmdp = p->tmdhead + p->tmdlast;
 456     tmdstat = tmdp->u.s.status;
 457     if(tmdstat & XMIT_OWN)
 458       break;
 459 #ifdef NO_STATIC
 460     skb = (struct sk_buff *) p->tmdbufs[p->tmdlast];
 461     dev_kfree_skb(skb,FREE_WRITE); 
 462 #endif
 463 
 464     if(tmdstat & XMIT_ERR)
 465     {
 466       printk("%s: xmit-error: %04x %04x\n",dev->name,(int) tmdstat,(int) tmdp->status2);
 467       if(tmdp->status2 & XMIT_TDRMASK) 
 468         printk("%s: tdr-problems (e.g. no resistor)\n",dev->name);
 469 
 470      /* checking some errors */
 471       if(tmdp->status2 & XMIT_RTRY) 
 472         p->stats.tx_aborted_errors++;
 473       if(tmdp->status2 & XMIT_LCAR) 
 474         p->stats.tx_carrier_errors++;
 475       p->stats.tx_errors++;
 476       tmdp->status2 = 0;
 477     }
 478     else
 479       p->stats.tx_packets++;
 480 
 481     p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 482     if(p->tmdlast == p->tmdnum)
 483       p->xmit_queued = 0;
 484   }
 485 
 486   dev->tbusy = 0;
 487   mark_bh(NET_BH);
 488 }
 489 
 490 /*
 491  * We have received a packet
 492  */
 493 
 494 static void recv_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 495 {
 496   struct rmd *rmdp; 
 497   int rmdstat,len;
 498   struct sk_buff *skb,*skb1;
 499   struct priv *p = (struct priv *) dev->priv;
 500 
 501   rmdp = p->rmdhead + p->rmdnum;
 502   while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
 503   {
 504     if( (rmdstat & (RCV_START | RCV_END)) != (RCV_START | RCV_END) ) /* is packet start & end? */ 
 505     {
 506       if(rmdstat & RCV_START)
 507       {
 508         p->stats.rx_errors++;
 509         p->stats.rx_length_errors++;
 510         printk("%s: packet too long\n",dev->name);
 511       }
 512       rmdp->u.s.status = RCV_OWN; /* change owner */
 513     }
 514     else if(rmdstat & RCV_ERR)
 515     {
 516       printk("%s: receive-error: %04x\n",dev->name,(int) rmdstat );
 517       p->stats.rx_errors++;
 518       if(rmdstat & RCV_FRAM) p->stats.rx_frame_errors++;
 519       if(rmdstat & RCV_OFLO) p->stats.rx_over_errors++;
 520       if(rmdstat & RCV_CRC)  p->stats.rx_crc_errors++;
 521       rmdp->u.s.status = RCV_OWN;
 522       printk("%s: lance-status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 523     }
 524     else
 525     {
 526       len = (rmdp->mlen & 0x0fff) - 4; /* -4: ignore FCS */
 527       skb = dev_alloc_skb(R_BUF_SIZE);
 528       if(skb != NULL)
 529       {
 530         if( (unsigned long) (skb->data + R_BUF_SIZE) & 0xff000000) {
 531           memcpy(skb_put(skb,len),p->recv_skb[p->rmdnum]->data,len);
 532           skb1 = skb;
 533         }
 534         else {
 535           skb1 = p->recv_skb[p->rmdnum];
 536           p->recv_skb[p->rmdnum] = skb;
 537           rmdp->u.buffer = (unsigned long) skb_put(skb1,len);
 538         }
 539         rmdp->u.s.status = RCV_OWN;
 540         rmdp->mlen = 0;   /* not necc ???? */
 541         skb1->dev = dev;
 542         p->stats.rx_packets++;
 543         skb1->protocol=eth_type_trans(skb1,dev);
 544         netif_rx(skb1);
 545       }
 546       else
 547       {
 548         rmdp->u.s.status = RCV_OWN;
 549         printk("%s: can't alloc new sk_buff\n",dev->name);
 550         p->stats.rx_dropped++;
 551       }
 552     }
 553     p->rmdnum++; p->rmdnum &= RMDNUM-1;
 554     rmdp = p->rmdhead + p->rmdnum;
 555   }
 556 }
 557 
 558 /*
 559  * kick xmitter ..
 560  */
 561 
 562 static int ni65_send_packet(struct sk_buff *skb, struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 563 {
 564   struct priv *p = (struct priv *) dev->priv;
 565   struct tmd *tmdp;
 566 
 567   if(dev->tbusy)
 568   {
 569     int tickssofar = jiffies - dev->trans_start;
 570     if (tickssofar < 25)
 571       return 1;
 572 
 573     printk("%s: xmitter timed out, try to restart!\n",dev->name);
 574     am7990_reinit(dev);
 575     dev->tbusy=0;
 576     dev->trans_start = jiffies;
 577   }
 578 
 579   if(skb == NULL)
 580   {
 581     dev_tint(dev);
 582     return 0;
 583   }
 584 
 585   if (skb->len <= 0)
 586     return 0;
 587 
 588   if (set_bit(0, (void*)&dev->tbusy) != 0)
 589   {
 590      printk("%s: Transmitter access conflict.\n", dev->name);
 591      return 1;
 592   }
 593   if(set_bit(0,(void*) &p->lock) != 0)
 594   {
 595     printk("%s: Queue was locked!\n",dev->name);
 596     return 1;
 597   }
 598 
 599   {
 600     short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
 601 
 602     tmdp = p->tmdhead + p->tmdnum;
 603 
 604 #ifdef NO_STATIC
 605     tmdp->u.buffer = (unsigned long) (skb->data);
 606     p->tmdbufs[p->tmdnum] = skb;
 607 #else
 608     memcpy((char *) (tmdp->u.buffer & 0x00ffffff),(char *)skb->data,skb->len);
 609     dev_kfree_skb (skb, FREE_WRITE);
 610 #endif
 611     tmdp->blen = -len;
 612     tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
 613 
 614     cli();
 615     p->xmit_queued = 1;
 616     writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
 617     p->tmdnum++; p->tmdnum &= TMDNUM-1;
 618  
 619     if( !((p->tmdhead + p->tmdnum)->u.s.status & XMIT_OWN) ) 
 620       dev->tbusy = 0;
 621     p->lock = 0;
 622     sti();
 623 
 624     dev->trans_start = jiffies;
 625 
 626   }
 627 
 628   return 0;
 629 }
 630 
 631 static struct enet_statistics *ni65_get_stats(struct device *dev)
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 632 {
 633   return &((struct priv *) dev->priv)->stats;
 634 }
 635 
 636 static void set_multicast_list(struct device *dev, int num_addrs, void *addrs)
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 637 {
 638 }
 639 
 640 /*
 641  * END of ni65.c 
 642  */
 643 

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