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 extern void *irq2dev_map[16];
 127 
 128 struct priv 
 129 {
 130   struct init_block ib; 
 131   void *memptr;
 132   struct rmd *rmdhead;
 133   struct tmd *tmdhead;
 134   int rmdnum;
 135   int tmdnum,tmdlast;
 136   struct sk_buff *recv_skb[RMDNUM];
 137   void *tmdbufs[TMDNUM];
 138   int lock,xmit_queued;
 139   struct enet_statistics stats;
 140 }; 
 141 
 142 int irqtab[] = { 9,12,15,5 }; /* irq config-translate */
 143 int dmatab[] = { 0,3,5,6 };   /* dma config-translate */
 144 
 145 /*
 146  * open (most done by init) 
 147  */
 148 
 149 static int ni65_open(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 150 {
 151   if(am7990_reinit(dev))
 152   {
 153     dev->tbusy     = 0;
 154     dev->interrupt = 0;
 155     dev->start     = 1;
 156     return 0;
 157   }
 158   else
 159   {
 160     dev->start = 0;
 161     return -EAGAIN;
 162   }
 163 }
 164 
 165 static int ni65_close(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 166 {
 167   outw(0,PORT+L_RESET); /* that's the hard way */
 168   dev->tbusy = 1;
 169   dev->start = 0;
 170   return 0; 
 171 }
 172 
 173 /* 
 174  * Probe The Card (not the lance-chip) 
 175  * and set hardaddress
 176  */ 
 177 
 178 int ni65_probe(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 179 {
 180   int *port, ports[] = {0x300,0x320,0x340,0x360, 0};
 181   int base_addr = dev->base_addr;
 182 
 183   if (base_addr > 0x1ff)          /* Check a single specified location. */
 184      return ni65_probe1(dev, base_addr);
 185   else if (base_addr > 0)         /* Don't probe at all. */
 186      return ENXIO;
 187 
 188   for (port = ports; *port; port++) 
 189   {
 190     int ioaddr = *port;
 191     if (check_region(ioaddr, NI65_TOTAL_SIZE))
 192        continue;
 193     if( !(inb(ioaddr+L_EBASE+6) == CARD_ID0) || 
 194         !(inb(ioaddr+L_EBASE+7) == CARD_ID1) )
 195        continue;
 196     dev->base_addr = ioaddr;
 197     if (ni65_probe1(dev, ioaddr) == 0)
 198        return 0;
 199   }
 200 
 201   dev->base_addr = base_addr;
 202   return ENODEV;
 203 }
 204 
 205 
 206 static int ni65_probe1(struct device *dev,int ioaddr)
     /* [previous][next][first][last][top][bottom][index][help] */
 207 {
 208   int i;
 209   unsigned char station_addr[6];
 210   struct priv *p; 
 211 
 212   for(i=0;i<6;i++)
 213     station_addr[i] = dev->dev_addr[i] = inb(PORT+L_EBASE+i);
 214 
 215   if(station_addr[0] != SA_ADDR0 || station_addr[1] != SA_ADDR1)
 216   {
 217     printk("%s: wrong Hardaddress \n",dev->name);
 218     return ENODEV;
 219   }
 220 
 221   if(dev->irq == 0) 
 222     dev->irq = irqtab[(inw(PORT+L_CONFIG)>>2)&3];
 223   if(dev->dma == 0)  
 224     dev->dma = dmatab[inw(PORT+L_CONFIG)&3];
 225 
 226   printk("%s: %s found at %#3x, IRQ %d DMA %d.\n", dev->name,
 227            "network card", dev->base_addr, dev->irq,dev->dma);
 228 
 229   {        
 230     int irqval = request_irq(dev->irq, &ni65_interrupt,0,"ni65");
 231     if (irqval) {
 232       printk ("%s: unable to get IRQ %d (irqval=%d).\n", 
 233                 dev->name,dev->irq, irqval);
 234       return EAGAIN;
 235     }
 236     if(request_dma(dev->dma, "ni65") != 0)
 237     {
 238       printk("%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
 239       free_irq(dev->irq);
 240       return EAGAIN;
 241     }
 242   }
 243   irq2dev_map[dev->irq] = dev;
 244 
 245   /* Grab the region so we can find another board if autoIRQ fails. */
 246         request_region(ioaddr,NI65_TOTAL_SIZE,"ni65");
 247 
 248   p = dev->priv = (void *) kmalloc(sizeof(struct priv),GFP_KERNEL);
 249   memset((char *) dev->priv,0,sizeof(struct priv));
 250 
 251   dev->open               = ni65_open;
 252   dev->stop               = ni65_close;
 253   dev->hard_start_xmit    = ni65_send_packet;
 254   dev->get_stats          = ni65_get_stats;
 255   dev->set_multicast_list = set_multicast_list;
 256 
 257   ether_setup(dev);
 258 
 259   dev->interrupt      = 0;
 260   dev->tbusy          = 0;
 261   dev->start          = 0;
 262 
 263   if( (p->memptr = kmalloc(MEMSIZE,GFP_KERNEL)) == NULL) {
 264     printk("%s: Can't alloc TMD/RMD-buffer.\n",dev->name);
 265     return EAGAIN;
 266   }
 267   if( (unsigned long) (p->memptr + MEMSIZE) & 0xff000000) {
 268     printk("%s: Can't alloc TMD/RMD buffer in lower 16MB!\n",dev->name);
 269     return EAGAIN;
 270   }
 271   p->tmdhead = (struct tmd *) ((( (unsigned long)p->memptr ) + 8) & 0xfffffff8);
 272   p->rmdhead = (struct rmd *) (p->tmdhead + TMDNUM);   
 273 
 274 #ifndef NO_STATIC
 275    for(i=0;i<TMDNUM;i++)
 276    {
 277      if( (p->tmdbufs[i] = kmalloc(T_BUF_SIZE,GFP_ATOMIC)) == NULL) {
 278        printk("%s: Can't alloc Xmit-Mem.\n",dev->name);
 279        return EAGAIN;
 280      }
 281      if( (unsigned long) (p->tmdbufs[i]+T_BUF_SIZE) & 0xff000000) {
 282        printk("%s: Can't alloc Xmit-Mem in lower 16MB!\n",dev->name);
 283        return EAGAIN;
 284      }
 285    }
 286 #endif
 287 
 288    for(i=0;i<RMDNUM;i++)
 289    {
 290      if( (p->recv_skb[i] = (struct sk_buff *) alloc_skb(R_BUF_SIZE,GFP_ATOMIC)) == NULL) {
 291        printk("%s: unable to alloc recv-mem\n",dev->name);
 292        return EAGAIN;
 293      }
 294      if( (unsigned long) (p->recv_skb[i]->data + R_BUF_SIZE) & 0xff000000) {
 295        printk("%s: unable to alloc receive-memory in lower 16MB!\n",dev->name);
 296        return EAGAIN;
 297      }
 298    }
 299 
 300   return 0; /* we've found everything */
 301 }
 302 
 303 /* 
 304  * init lance (write init-values .. init-buffers) (open-helper)
 305  */
 306 
 307 static int am7990_reinit(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 308 {
 309    int i,j;
 310    struct tmd *tmdp;
 311    struct rmd *rmdp;
 312    struct priv *p = (struct priv *) dev->priv;
 313 
 314    p->lock = 0;
 315    p->xmit_queued = 0;
 316 
 317    disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 318    set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 319    enable_dma(dev->dma); 
 320 
 321    outw(0,PORT+L_RESET); /* first: reset the card */
 322    if(inw(PORT+L_DATAREG) != 0x4)
 323    {
 324      printk("%s: can't RESET ni6510 card: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 325      disable_dma(dev->dma);
 326      free_dma(dev->dma);
 327      free_irq(dev->irq);
 328      return 0;
 329    }
 330 
 331    /* here: memset all buffs to zero */
 332 
 333    memset(p->memptr,0,MEMSIZE);
 334 
 335    p->tmdnum = 0; p->tmdlast = 0;
 336    for(i=0;i<TMDNUM;i++)
 337    {
 338      tmdp = p->tmdhead + i;
 339 #ifndef NO_STATIC
 340      tmdp->u.buffer = (unsigned long) p->tmdbufs[i];     
 341 #endif
 342      tmdp->u.s.status = XMIT_START | XMIT_END;
 343    }
 344 
 345    p->rmdnum = 0;
 346    for(i=0;i<RMDNUM;i++)
 347    {
 348      rmdp = p->rmdhead + i;
 349      rmdp->u.buffer = (unsigned long) p->recv_skb[i]->data;
 350      rmdp->u.s.status = RCV_OWN;
 351      rmdp->blen = -R_BUF_SIZE;
 352      rmdp->mlen = 0;
 353    }
 354    
 355    for(i=0;i<6;i++)
 356    {
 357      p->ib.eaddr[i] = dev->dev_addr[i];
 358    }
 359    p->ib.mode = 0;
 360    for(i=0;i<8;i++) 
 361      p->ib.filter[i] = 0;
 362    p->ib.trplow = (unsigned short) (( (unsigned long) p->tmdhead ) & 0xffff);
 363    p->ib.trphigh = (unsigned short) ((( (unsigned long) p->tmdhead )>>16) & 0x00ff) | TMDNUMMASK; 
 364    p->ib.rrplow = (unsigned short) (( (unsigned long) p->rmdhead ) & 0xffff);
 365    p->ib.rrphigh = (unsigned short) ((( (unsigned long) p->rmdhead )>>16) & 0x00ff) | RMDNUMMASK;
 366 
 367    writereg(0,CSR3);  /* busmaster/no word-swap */
 368    writereg((unsigned short) (((unsigned long) &(p->ib)) & 0xffff),CSR1);
 369    writereg((unsigned short) (((unsigned long) &(p->ib))>>16),CSR2);
 370    
 371    writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 372 
 373   /*
 374    * NOW, WE NEVER WILL CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED 
 375    */
 376 
 377     for(i=0;i<5;i++)
 378     {
 379       for(j=0;j<2000000;j++); /* wait a while */
 380       if(inw(PORT+L_DATAREG) & CSR0_IDON) break; /* init ok ? */
 381     }
 382     if(i == 5) 
 383     {
 384       printk("%s: can't init am7990, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 385       disable_dma(dev->dma);
 386       free_dma(dev->dma);
 387       free_irq(dev->irq);
 388       return 0; /* false */
 389     } 
 390 
 391     writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); /* start lance , enable interrupts */
 392 
 393     return 1; /* OK */
 394 }
 395  
 396 /* 
 397  * interrupt handler  
 398  */
 399 
 400 static void ni65_interrupt(int irq, struct pt_regs * regs)
     /* [previous][next][first][last][top][bottom][index][help] */
 401 {
 402   int csr0;
 403   struct device *dev = (struct device *) irq2dev_map[irq];
 404 
 405   if (dev == NULL) {
 406     printk ("net_interrupt(): irq %d for unknown device.\n", irq);
 407     return;
 408   }
 409 
 410   csr0 = inw(PORT+L_DATAREG);
 411   writedatareg(csr0 & CSR0_CLRALL); /* ack interrupts, disable int. */
 412 
 413   dev->interrupt = 1;
 414 
 415   if(csr0 & CSR0_ERR)
 416   {
 417      struct priv *p = (struct priv *) dev->priv;
 418 
 419      if(csr0 & CSR0_BABL)
 420        p->stats.tx_errors++;
 421      if(csr0 & CSR0_MISS)
 422        p->stats.rx_errors++;
 423   }
 424 
 425   if(csr0 & CSR0_RINT) /* RECV-int? */
 426   { 
 427     recv_intr(dev);
 428   }
 429   if(csr0 & CSR0_TINT) /* XMIT-int? */
 430   {  
 431     xmit_intr(dev);
 432   }
 433 
 434   writedatareg(CSR0_INEA);  /* reenable inter. */
 435   dev->interrupt = 0;
 436 
 437   return;
 438 }
 439 
 440 /*
 441  * We have received an Xmit-Interrupt ..
 442  * send a new packet if necessary
 443  */
 444 
 445 static void xmit_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 446 {
 447   int tmdstat;
 448   struct tmd *tmdp;
 449   struct priv *p = (struct priv *) dev->priv;
 450 
 451 #ifdef NO_STATIC
 452   struct sk_buff *skb;
 453 #endif
 454 
 455   while(p->xmit_queued)
 456   {
 457     tmdp = p->tmdhead + p->tmdlast;
 458     tmdstat = tmdp->u.s.status;
 459     if(tmdstat & XMIT_OWN)
 460       break;
 461 #ifdef NO_STATIC
 462     skb = (struct sk_buff *) p->tmdbufs[p->tmdlast];
 463     dev_kfree_skb(skb,FREE_WRITE); 
 464 #endif
 465 
 466     if(tmdstat & XMIT_ERR)
 467     {
 468       printk("%s: xmit-error: %04x %04x\n",dev->name,(int) tmdstat,(int) tmdp->status2);
 469       if(tmdp->status2 & XMIT_TDRMASK) 
 470         printk("%s: tdr-problems (e.g. no resistor)\n",dev->name);
 471 
 472      /* checking some errors */
 473       if(tmdp->status2 & XMIT_RTRY) 
 474         p->stats.tx_aborted_errors++;
 475       if(tmdp->status2 & XMIT_LCAR) 
 476         p->stats.tx_carrier_errors++;
 477       p->stats.tx_errors++;
 478       tmdp->status2 = 0;
 479     }
 480     else
 481       p->stats.tx_packets++;
 482 
 483     p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 484     if(p->tmdlast == p->tmdnum)
 485       p->xmit_queued = 0;
 486   }
 487 
 488   dev->tbusy = 0;
 489   mark_bh(NET_BH);
 490 }
 491 
 492 /*
 493  * We have received a packet
 494  */
 495 
 496 static void recv_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 497 {
 498   struct rmd *rmdp; 
 499   int rmdstat,len;
 500   struct sk_buff *skb,*skb1;
 501   struct priv *p = (struct priv *) dev->priv;
 502 
 503   rmdp = p->rmdhead + p->rmdnum;
 504   while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
 505   {
 506     if( (rmdstat & (RCV_START | RCV_END)) != (RCV_START | RCV_END) ) /* is packet start & end? */ 
 507     {
 508       if(rmdstat & RCV_START)
 509       {
 510         p->stats.rx_errors++;
 511         p->stats.rx_length_errors++;
 512         printk("%s: packet too long\n",dev->name);
 513       }
 514       rmdp->u.s.status = RCV_OWN; /* change owner */
 515     }
 516     else if(rmdstat & RCV_ERR)
 517     {
 518       printk("%s: receive-error: %04x\n",dev->name,(int) rmdstat );
 519       p->stats.rx_errors++;
 520       if(rmdstat & RCV_FRAM) p->stats.rx_frame_errors++;
 521       if(rmdstat & RCV_OFLO) p->stats.rx_over_errors++;
 522       if(rmdstat & RCV_CRC)  p->stats.rx_crc_errors++;
 523       rmdp->u.s.status = RCV_OWN;
 524       printk("%s: lance-status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 525     }
 526     else
 527     {
 528       len = (rmdp->mlen & 0x0fff) - 4; /* -4: ignore FCS */
 529       skb = alloc_skb(R_BUF_SIZE,GFP_ATOMIC);
 530       if(skb != NULL)
 531       {
 532         if( (unsigned long) (skb->data + R_BUF_SIZE) & 0xff000000) {
 533           memcpy(skb->data,p->recv_skb[p->rmdnum]->data,len);
 534           skb1 = skb;
 535         }
 536         else {
 537           skb1 = p->recv_skb[p->rmdnum];
 538           p->recv_skb[p->rmdnum] = skb;
 539           rmdp->u.buffer = (unsigned long) (skb->data);
 540         }
 541         rmdp->u.s.status = RCV_OWN;
 542         rmdp->mlen = 0;   /* not necc ???? */
 543         skb1->len = len;
 544         skb1->dev = dev;
 545         p->stats.rx_packets++;
 546         netif_rx(skb1);
 547       }
 548       else
 549       {
 550         rmdp->u.s.status = RCV_OWN;
 551         printk("%s: can't alloc new sk_buff\n",dev->name);
 552         p->stats.rx_dropped++;
 553       }
 554     }
 555     p->rmdnum++; p->rmdnum &= RMDNUM-1;
 556     rmdp = p->rmdhead + p->rmdnum;
 557   }
 558 }
 559 
 560 /*
 561  * kick xmitter ..
 562  */
 563 
 564 static int ni65_send_packet(struct sk_buff *skb, struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 565 {
 566   struct priv *p = (struct priv *) dev->priv;
 567   struct tmd *tmdp;
 568 
 569   if(dev->tbusy)
 570   {
 571     int tickssofar = jiffies - dev->trans_start;
 572     if (tickssofar < 25)
 573       return 1;
 574 
 575     printk("%s: xmitter timed out, try to restart!\n",dev->name);
 576     am7990_reinit(dev);
 577     dev->tbusy=0;
 578     dev->trans_start = jiffies;
 579   }
 580 
 581   if(skb == NULL)
 582   {
 583     dev_tint(dev);
 584     return 0;
 585   }
 586 
 587   if (skb->len <= 0)
 588     return 0;
 589 
 590   if (set_bit(0, (void*)&dev->tbusy) != 0)
 591   {
 592      printk("%s: Transmitter access conflict.\n", dev->name);
 593      return 1;
 594   }
 595   if(set_bit(0,(void*) &p->lock) != 0)
 596   {
 597     printk("%s: Queue was locked!\n",dev->name);
 598     return 1;
 599   }
 600 
 601   {
 602     short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
 603 
 604     tmdp = p->tmdhead + p->tmdnum;
 605 
 606 #ifdef NO_STATIC
 607     tmdp->u.buffer = (unsigned long) (skb->data);
 608     p->tmdbufs[p->tmdnum] = skb;
 609 #else
 610     memcpy((char *) (tmdp->u.buffer & 0x00ffffff),(char *)skb->data,skb->len);
 611     dev_kfree_skb (skb, FREE_WRITE);
 612 #endif
 613     tmdp->blen = -len;
 614     tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
 615 
 616     cli();
 617     p->xmit_queued = 1;
 618     writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
 619     p->tmdnum++; p->tmdnum &= TMDNUM-1;
 620  
 621     if( !((p->tmdhead + p->tmdnum)->u.s.status & XMIT_OWN) ) 
 622       dev->tbusy = 0;
 623     p->lock = 0;
 624     sti();
 625 
 626     dev->trans_start = jiffies;
 627 
 628   }
 629 
 630   return 0;
 631 }
 632 
 633 static struct enet_statistics *ni65_get_stats(struct device *dev)
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 634 {
 635   return &((struct priv *) dev->priv)->stats;
 636 }
 637 
 638 static void set_multicast_list(struct device *dev, int num_addrs, void *addrs)
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 639 {
 640 }
 641 
 642 /*
 643  * END of ni65.c 
 644  */
 645 

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