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/config.h>
  34 #include <linux/kernel.h>
  35 #include <linux/sched.h>
  36 #include <linux/string.h>
  37 #include <linux/ptrace.h>
  38 #include <linux/errno.h>
  39 #include <linux/ioport.h>
  40 #include <linux/malloc.h>
  41 #include <linux/interrupt.h>
  42 #include <asm/bitops.h>
  43 #include <asm/io.h>
  44 #include <asm/dma.h>
  45 
  46 #include <linux/netdevice.h>
  47 #include <linux/etherdevice.h>
  48 #include <linux/skbuff.h>
  49 
  50 #include "ni65.h"
  51 
  52 /************************************
  53  * skeleton-stuff
  54  */
  55 
  56 #ifndef HAVE_PORTRESERVE
  57 #define check_region(ioaddr, size)              0
  58 #define snarf_region(ioaddr, size);             do ; while (0)
  59 #endif
  60 
  61 #ifndef NET_DEBUG
  62 #define NET_DEBUG 2
  63 #endif
  64 /*
  65 static unsigned int net_debug = NET_DEBUG;
  66 */
  67 
  68 #define NI65_TOTAL_SIZE    16
  69 
  70 #define SA_ADDR0 0x02
  71 #define SA_ADDR1 0x07
  72 #define SA_ADDR2 0x01
  73 #define CARD_ID0 0x00
  74 #define CARD_ID1 0x55
  75 
  76 /*****************************************/
  77 
  78 #define PORT dev->base_addr
  79 
  80 #define RMDNUM 8
  81 #define RMDNUMMASK 0x6000 /* log2(RMDNUM)<<13 */
  82 #define TMDNUM 4
  83 #define TMDNUMMASK 0x4000 /* log2(TMDNUM)<<13 */
  84 
  85 #define R_BUF_SIZE 1518
  86 #define T_BUF_SIZE 1518
  87 
  88 #define MEMSIZE 8+RMDNUM*8+TMDNUM*8
  89 
  90 #define L_DATAREG 0x00
  91 #define L_ADDRREG 0x02
  92 
  93 #define L_RESET   0x04
  94 #define L_CONFIG  0x05
  95 #define L_EBASE   0x08
  96 
  97 /* 
  98  * to access the am7990-regs, you have to write
  99  * reg-number into L_ADDRREG, then you can access it using L_DATAREG
 100  */
 101 #define CSR0 0x00
 102 #define CSR1 0x01
 103 #define CSR2 0x02
 104 #define CSR3 0x03
 105 
 106 /* if you #define NO_STATIC the driver is faster but you will have (more) problems with >16MB memory */
 107 #undef NO_STATIC
 108 
 109 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
 110                            outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 111 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
 112                        inw(PORT+L_DATAREG))
 113 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 114 
 115 static int   ni65_probe1(struct device *dev,int);
 116 static void  ni65_interrupt(int reg_ptr);
 117   static void recv_intr(struct device *dev);
 118   static void xmit_intr(struct device *dev);
 119 static int   ni65_open(struct device *dev);
 120    static int am7990_reinit(struct device *dev);
 121 static int   ni65_send_packet(struct sk_buff *skb, struct device *dev);
 122 static int   ni65_close(struct device *dev);
 123 static struct enet_statistics *ni65_get_stats(struct device *);
 124 
 125 static void set_multicast_list(struct device *dev, int num_addrs, void *addrs);
 126 
 127 extern void *irq2dev_map[16];
 128 
 129 struct priv 
 130 {
 131   struct init_block ib; 
 132   void *memptr;
 133   struct rmd *rmdhead;
 134   struct tmd *tmdhead;
 135   int rmdnum;
 136   int tmdnum,tmdlast;
 137   struct sk_buff *recv_skb[RMDNUM];
 138   void *tmdbufs[TMDNUM];
 139   int lock,xmit_queued;
 140   struct enet_statistics stats;
 141 }; 
 142 
 143 int irqtab[] = { 9,12,15,5 }; /* irq config-translate */
 144 int dmatab[] = { 0,3,5,6 };   /* dma config-translate */
 145 
 146 /*
 147  * open (most done by init) 
 148  */
 149 
 150 static int ni65_open(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 151 {
 152   if(am7990_reinit(dev))
 153   {
 154     dev->tbusy     = 0;
 155     dev->interrupt = 0;
 156     dev->start     = 1;
 157     return 0;
 158   }
 159   else
 160   {
 161     dev->start = 0;
 162     return -EAGAIN;
 163   }
 164 }
 165 
 166 static int ni65_close(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 167 {
 168   outw(0,PORT+L_RESET); /* that's the hard way */
 169   dev->tbusy = 1;
 170   dev->start = 0;
 171   return 0; 
 172 }
 173 
 174 /* 
 175  * Probe The Card (not the lance-chip) 
 176  * and set hardaddress
 177  */ 
 178 
 179 int ni65_probe(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 180 {
 181   int *port, ports[] = {0x300,0x320,0x340,0x360, 0};
 182   int base_addr = dev->base_addr;
 183 
 184   if (base_addr > 0x1ff)          /* Check a single specified location. */
 185      return ni65_probe1(dev, base_addr);
 186   else if (base_addr > 0)         /* Don't probe at all. */
 187      return ENXIO;
 188 
 189   for (port = ports; *port; port++) 
 190   {
 191     int ioaddr = *port;
 192     if (check_region(ioaddr, NI65_TOTAL_SIZE))
 193        continue;
 194     if( !(inb(ioaddr+L_EBASE+6) == CARD_ID0) || 
 195         !(inb(ioaddr+L_EBASE+7) == CARD_ID1) )
 196        continue;
 197     dev->base_addr = ioaddr;
 198     if (ni65_probe1(dev, ioaddr) == 0)
 199        return 0;
 200   }
 201 
 202   dev->base_addr = base_addr;
 203   return ENODEV;
 204 }
 205 
 206 
 207 static int ni65_probe1(struct device *dev,int ioaddr)
     /* [previous][next][first][last][top][bottom][index][help] */
 208 {
 209   int i;
 210   unsigned char station_addr[6];
 211   struct priv *p; 
 212 
 213   for(i=0;i<6;i++)
 214     station_addr[i] = dev->dev_addr[i] = inb(PORT+L_EBASE+i);
 215 
 216   if(station_addr[0] != SA_ADDR0 || station_addr[1] != SA_ADDR1)
 217   {
 218     printk("%s: wrong Hardaddress \n",dev->name);
 219     return ENODEV;
 220   }
 221 
 222   if(dev->irq == 0) 
 223     dev->irq = irqtab[(inw(PORT+L_CONFIG)>>2)&3];
 224   if(dev->dma == 0)  
 225     dev->dma = dmatab[inw(PORT+L_CONFIG)&3];
 226 
 227   printk("%s: %s found at %#3x, IRQ %d DMA %d.\n", dev->name,
 228            "network card", dev->base_addr, dev->irq,dev->dma);
 229 
 230   {        
 231     int irqval = request_irq(dev->irq, &ni65_interrupt,0,"ni65");
 232     if (irqval) {
 233       printk ("%s: unable to get IRQ %d (irqval=%d).\n", 
 234                 dev->name,dev->irq, irqval);
 235       return EAGAIN;
 236     }
 237     if(request_dma(dev->dma, "ni65") != 0)
 238     {
 239       printk("%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
 240       free_irq(dev->irq);
 241       return EAGAIN;
 242     }
 243   }
 244   irq2dev_map[dev->irq] = dev;
 245 
 246   /* Grab the region so we can find another board if autoIRQ fails. */
 247         snarf_region(ioaddr,NI65_TOTAL_SIZE);
 248 
 249   p = dev->priv = (void *) kmalloc(sizeof(struct priv),GFP_KERNEL);
 250   memset((char *) dev->priv,0,sizeof(struct priv));
 251 
 252   dev->open               = ni65_open;
 253   dev->stop               = ni65_close;
 254   dev->hard_start_xmit    = ni65_send_packet;
 255   dev->get_stats          = ni65_get_stats;
 256   dev->set_multicast_list = set_multicast_list;
 257 
 258   ether_setup(dev);
 259 
 260   dev->interrupt      = 0;
 261   dev->tbusy          = 0;
 262   dev->start          = 0;
 263 
 264   if( (p->memptr = kmalloc(MEMSIZE,GFP_KERNEL)) == NULL) {
 265     printk("%s: Can't alloc TMD/RMD-buffer.\n",dev->name);
 266     return EAGAIN;
 267   }
 268   if( (unsigned long) (p->memptr + MEMSIZE) & 0xff000000) {
 269     printk("%s: Can't alloc TMD/RMD buffer in lower 16MB!\n",dev->name);
 270     return EAGAIN;
 271   }
 272   p->tmdhead = (struct tmd *) ((( (unsigned long)p->memptr ) + 8) & 0xfffffff8);
 273   p->rmdhead = (struct rmd *) (p->tmdhead + TMDNUM);   
 274 
 275 #ifndef NO_STATIC
 276    for(i=0;i<TMDNUM;i++)
 277    {
 278      if( (p->tmdbufs[i] = kmalloc(T_BUF_SIZE,GFP_ATOMIC)) == NULL) {
 279        printk("%s: Can't alloc Xmit-Mem.\n",dev->name);
 280        return EAGAIN;
 281      }
 282      if( (unsigned long) (p->tmdbufs[i]+T_BUF_SIZE) & 0xff000000) {
 283        printk("%s: Can't alloc Xmit-Mem in lower 16MB!\n",dev->name);
 284        return EAGAIN;
 285      }
 286    }
 287 #endif
 288 
 289    for(i=0;i<RMDNUM;i++)
 290    {
 291      if( (p->recv_skb[i] = (struct sk_buff *) alloc_skb(R_BUF_SIZE,GFP_ATOMIC)) == NULL) {
 292        printk("%s: unable to alloc recv-mem\n",dev->name);
 293        return EAGAIN;
 294      }
 295      if( (unsigned long) (p->recv_skb[i]->data + R_BUF_SIZE) & 0xff000000) {
 296        printk("%s: unable to alloc receive-memory in lower 16MB!\n",dev->name);
 297        return EAGAIN;
 298      }
 299    }
 300 
 301   return 0; /* we've found everything */
 302 }
 303 
 304 /* 
 305  * init lance (write init-values .. init-buffers) (open-helper)
 306  */
 307 
 308 static int am7990_reinit(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 309 {
 310    int i,j;
 311    struct tmd *tmdp;
 312    struct rmd *rmdp;
 313    struct priv *p = (struct priv *) dev->priv;
 314 
 315    p->lock = 0;
 316    p->xmit_queued = 0;
 317 
 318    disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 319    set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 320    enable_dma(dev->dma); 
 321 
 322    outw(0,PORT+L_RESET); /* first: reset the card */
 323    if(inw(PORT+L_DATAREG) != 0x4)
 324    {
 325      printk("%s: can't RESET ni6510 card: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 326      disable_dma(dev->dma);
 327      free_dma(dev->dma);
 328      free_irq(dev->irq);
 329      return 0;
 330    }
 331 
 332    /* here: memset all buffs to zero */
 333 
 334    memset(p->memptr,0,MEMSIZE);
 335 
 336    p->tmdnum = 0; p->tmdlast = 0;
 337    for(i=0;i<TMDNUM;i++)
 338    {
 339      tmdp = p->tmdhead + i;
 340 #ifndef NO_STATIC
 341      tmdp->u.buffer = (unsigned long) p->tmdbufs[i];     
 342 #endif
 343      tmdp->u.s.status = XMIT_START | XMIT_END;
 344    }
 345 
 346    p->rmdnum = 0;
 347    for(i=0;i<RMDNUM;i++)
 348    {
 349      rmdp = p->rmdhead + i;
 350      rmdp->u.buffer = (unsigned long) p->recv_skb[i]->data;
 351      rmdp->u.s.status = RCV_OWN;
 352      rmdp->blen = -R_BUF_SIZE;
 353      rmdp->mlen = 0;
 354    }
 355    
 356    for(i=0;i<6;i++)
 357    {
 358      p->ib.eaddr[i] = dev->dev_addr[i];
 359    }
 360    p->ib.mode = 0;
 361    for(i=0;i<8;i++) 
 362      p->ib.filter[i] = 0;
 363    p->ib.trplow = (unsigned short) (( (unsigned long) p->tmdhead ) & 0xffff);
 364    p->ib.trphigh = (unsigned short) ((( (unsigned long) p->tmdhead )>>16) & 0x00ff) | TMDNUMMASK; 
 365    p->ib.rrplow = (unsigned short) (( (unsigned long) p->rmdhead ) & 0xffff);
 366    p->ib.rrphigh = (unsigned short) ((( (unsigned long) p->rmdhead )>>16) & 0x00ff) | RMDNUMMASK;
 367 
 368    writereg(0,CSR3);  /* busmaster/no word-swap */
 369    writereg((unsigned short) (((unsigned long) &(p->ib)) & 0xffff),CSR1);
 370    writereg((unsigned short) (((unsigned long) &(p->ib))>>16),CSR2);
 371    
 372    writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 373 
 374   /*
 375    * NOW, WE NEVER WILL CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED 
 376    */
 377 
 378     for(i=0;i<5;i++)
 379     {
 380       for(j=0;j<2000000;j++); /* wait a while */
 381       if(inw(PORT+L_DATAREG) & CSR0_IDON) break; /* init ok ? */
 382     }
 383     if(i == 5) 
 384     {
 385       printk("%s: can't init am7990, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 386       disable_dma(dev->dma);
 387       free_dma(dev->dma);
 388       free_irq(dev->irq);
 389       return 0; /* false */
 390     } 
 391 
 392     writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); /* start lance , enable interrupts */
 393 
 394     return 1; /* OK */
 395 }
 396  
 397 /* 
 398  * interrupt handler  
 399  */
 400 
 401 static void ni65_interrupt(int reg_ptr)
     /* [previous][next][first][last][top][bottom][index][help] */
 402 {
 403   int irq = -(((struct pt_regs *)reg_ptr)->orig_eax+2);
 404   int csr0;
 405   struct device *dev = (struct device *) irq2dev_map[irq];
 406 
 407   if (dev == NULL) {
 408     printk ("net_interrupt(): irq %d for unknown device.\n", irq);
 409     return;
 410   }
 411 
 412   csr0 = inw(PORT+L_DATAREG);
 413   writedatareg(csr0 & CSR0_CLRALL); /* ack interrupts, disable int. */
 414 
 415   dev->interrupt = 1;
 416 
 417   if(csr0 & CSR0_ERR)
 418   {
 419      struct priv *p = (struct priv *) dev->priv;
 420 
 421      if(csr0 & CSR0_BABL)
 422        p->stats.tx_errors++;
 423      if(csr0 & CSR0_MISS)
 424        p->stats.rx_errors++;
 425   }
 426 
 427   if(csr0 & CSR0_RINT) /* RECV-int? */
 428   { 
 429     recv_intr(dev);
 430   }
 431   if(csr0 & CSR0_TINT) /* XMIT-int? */
 432   {  
 433     xmit_intr(dev);
 434   }
 435 
 436   writedatareg(CSR0_INEA);  /* reenable inter. */
 437   dev->interrupt = 0;
 438 
 439   return;
 440 }
 441 
 442 /*
 443  * We have received an Xmit-Interrupt ..
 444  * send a new packet if necessary
 445  */
 446 
 447 static void xmit_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 448 {
 449   int tmdstat;
 450   struct tmd *tmdp;
 451   struct priv *p = (struct priv *) dev->priv;
 452 
 453 #ifdef NO_STATIC
 454   struct sk_buff *skb;
 455 #endif
 456 
 457   while(p->xmit_queued)
 458   {
 459     tmdp = p->tmdhead + p->tmdlast;
 460     tmdstat = tmdp->u.s.status;
 461     if(tmdstat & XMIT_OWN)
 462       break;
 463 #ifdef NO_STATIC
 464     skb = (struct sk_buff *) p->tmdbufs[p->tmdlast];
 465     dev_kfree_skb(skb,FREE_WRITE); 
 466 #endif
 467 
 468     if(tmdstat & XMIT_ERR)
 469     {
 470       printk("%s: xmit-error: %04x %04x\n",dev->name,(int) tmdstat,(int) tmdp->status2);
 471       if(tmdp->status2 & XMIT_TDRMASK) 
 472         printk("%s: tdr-problems (e.g. no resistor)\n",dev->name);
 473 
 474      /* checking some errors */
 475       if(tmdp->status2 & XMIT_RTRY) 
 476         p->stats.tx_aborted_errors++;
 477       if(tmdp->status2 & XMIT_LCAR) 
 478         p->stats.tx_carrier_errors++;
 479       p->stats.tx_errors++;
 480       tmdp->status2 = 0;
 481     }
 482     else
 483       p->stats.tx_packets++;
 484 
 485     p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 486     if(p->tmdlast == p->tmdnum)
 487       p->xmit_queued = 0;
 488   }
 489 
 490   dev->tbusy = 0;
 491   mark_bh(NET_BH);
 492 }
 493 
 494 /*
 495  * We have received a packet
 496  */
 497 
 498 static void recv_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 499 {
 500   struct rmd *rmdp; 
 501   int rmdstat,len;
 502   struct sk_buff *skb,*skb1;
 503   struct priv *p = (struct priv *) dev->priv;
 504 
 505   rmdp = p->rmdhead + p->rmdnum;
 506   while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
 507   {
 508     if( (rmdstat & (RCV_START | RCV_END)) != (RCV_START | RCV_END) ) /* is packet start & end? */ 
 509     {
 510       if(rmdstat & RCV_START)
 511       {
 512         p->stats.rx_errors++;
 513         p->stats.rx_length_errors++;
 514         printk("%s: packet too long\n",dev->name);
 515       }
 516       rmdp->u.s.status = RCV_OWN; /* change owner */
 517     }
 518     else if(rmdstat & RCV_ERR)
 519     {
 520       printk("%s: receive-error: %04x\n",dev->name,(int) rmdstat );
 521       p->stats.rx_errors++;
 522       if(rmdstat & RCV_FRAM) p->stats.rx_frame_errors++;
 523       if(rmdstat & RCV_OFLO) p->stats.rx_over_errors++;
 524       if(rmdstat & RCV_CRC)  p->stats.rx_crc_errors++;
 525       rmdp->u.s.status = RCV_OWN;
 526       printk("%s: lance-status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 527     }
 528     else
 529     {
 530       len = (rmdp->mlen & 0x0fff) - 4; /* -4: ignore FCS */
 531       skb = alloc_skb(R_BUF_SIZE,GFP_ATOMIC);
 532       if(skb != NULL)
 533       {
 534         if( (unsigned long) (skb->data + R_BUF_SIZE) & 0xff000000) {
 535           memcpy(skb->data,p->recv_skb[p->rmdnum]->data,len);
 536           skb1 = skb;
 537         }
 538         else {
 539           skb1 = p->recv_skb[p->rmdnum];
 540           p->recv_skb[p->rmdnum] = skb;
 541           rmdp->u.buffer = (unsigned long) (skb->data);
 542         }
 543         rmdp->u.s.status = RCV_OWN;
 544         rmdp->mlen = 0;   /* not necc ???? */
 545         skb1->len = len;
 546         skb1->dev = dev;
 547         p->stats.rx_packets++;
 548         netif_rx(skb1);
 549       }
 550       else
 551       {
 552         rmdp->u.s.status = RCV_OWN;
 553         printk("%s: can't alloc new sk_buff\n",dev->name);
 554         p->stats.rx_dropped++;
 555       }
 556     }
 557     p->rmdnum++; p->rmdnum &= RMDNUM-1;
 558     rmdp = p->rmdhead + p->rmdnum;
 559   }
 560 }
 561 
 562 /*
 563  * kick xmitter ..
 564  */
 565 
 566 static int ni65_send_packet(struct sk_buff *skb, struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 567 {
 568   struct priv *p = (struct priv *) dev->priv;
 569   struct tmd *tmdp;
 570 
 571   if(dev->tbusy)
 572   {
 573     int tickssofar = jiffies - dev->trans_start;
 574     if (tickssofar < 25)
 575       return 1;
 576 
 577     printk("%s: xmitter timed out, try to restart!\n",dev->name);
 578     am7990_reinit(dev);
 579     dev->tbusy=0;
 580     dev->trans_start = jiffies;
 581   }
 582 
 583   if(skb == NULL)
 584   {
 585     dev_tint(dev);
 586     return 0;
 587   }
 588 
 589   if (skb->len <= 0)
 590     return 0;
 591 
 592   if (set_bit(0, (void*)&dev->tbusy) != 0)
 593   {
 594      printk("%s: Transmitter access conflict.\n", dev->name);
 595      return 1;
 596   }
 597   if(set_bit(0,(void*) &p->lock) != 0)
 598   {
 599     printk("%s: Queue was locked!\n",dev->name);
 600     return 1;
 601   }
 602 
 603   {
 604     short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
 605 
 606     tmdp = p->tmdhead + p->tmdnum;
 607 
 608 #ifdef NO_STATIC
 609     tmdp->u.buffer = (unsigned long) (skb->data);
 610     p->tmdbufs[p->tmdnum] = skb;
 611 #else
 612     memcpy((char *) (tmdp->u.buffer & 0x00ffffff),(char *)skb->data,skb->len);
 613     dev_kfree_skb (skb, FREE_WRITE);
 614 #endif
 615     tmdp->blen = -len;
 616     tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
 617 
 618     cli();
 619     p->xmit_queued = 1;
 620     writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
 621     p->tmdnum++; p->tmdnum &= TMDNUM-1;
 622  
 623     if( !((p->tmdhead + p->tmdnum)->u.s.status & XMIT_OWN) ) 
 624       dev->tbusy = 0;
 625     p->lock = 0;
 626     sti();
 627 
 628     dev->trans_start = jiffies;
 629 
 630   }
 631 
 632   return 0;
 633 }
 634 
 635 static struct enet_statistics *ni65_get_stats(struct device *dev)
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 636 {
 637   return &((struct priv *) dev->priv)->stats;
 638 }
 639 
 640 static void set_multicast_list(struct device *dev, int num_addrs, void *addrs)
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 641 {
 642 }
 643 
 644 /*
 645  * END of ni65.c 
 646  */
 647 

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