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  * Nov.18: multicast tweaked (AC).
  25  *
  26  * Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
  27  *
  28  * July.16: fixed bugs in recv_skb and skb-alloc stuff  (MH)
  29  */
  30 
  31 /*
  32  * known BUGS: 16MB limit
  33  */
  34 
  35 #include <linux/kernel.h>
  36 #include <linux/sched.h>
  37 #include <linux/string.h>
  38 #include <linux/ptrace.h>
  39 #include <linux/errno.h>
  40 #include <linux/ioport.h>
  41 #include <linux/malloc.h>
  42 #include <linux/interrupt.h>
  43 #include <asm/bitops.h>
  44 #include <asm/io.h>
  45 #include <asm/dma.h>
  46 
  47 #include <linux/netdevice.h>
  48 #include <linux/etherdevice.h>
  49 #include <linux/skbuff.h>
  50 
  51 #include "ni65.h"
  52 
  53 /************************************
  54  * skeleton-stuff
  55  */
  56 
  57 #ifndef HAVE_PORTRESERVE
  58 #define check_region(ioaddr, size)              0
  59 #define request_region(ioaddr, size,name)       do ; while (0)
  60 #endif
  61 
  62 #ifndef NET_DEBUG
  63 #define NET_DEBUG 2
  64 #endif
  65 /*
  66 static unsigned int net_debug = NET_DEBUG;
  67 */
  68 
  69 #define NI65_TOTAL_SIZE    16
  70 
  71 #define SA_ADDR0 0x02
  72 #define SA_ADDR1 0x07
  73 #define SA_ADDR2 0x01
  74 #define CARD_ID0 0x00
  75 #define CARD_ID1 0x55
  76 
  77 /*****************************************/
  78 
  79 #define PORT dev->base_addr
  80 
  81 #define RMDNUM 8
  82 #define RMDNUMMASK 0x6000 /* log2(RMDNUM)<<13 */
  83 #define TMDNUM 4
  84 #define TMDNUMMASK 0x4000 /* log2(TMDNUM)<<13 */
  85 
  86 #define R_BUF_SIZE 1518
  87 #define T_BUF_SIZE 1518
  88 
  89 #define MEMSIZE 8+RMDNUM*8+TMDNUM*8
  90 
  91 #define L_DATAREG 0x00
  92 #define L_ADDRREG 0x02
  93 
  94 #define L_RESET   0x04
  95 #define L_CONFIG  0x05
  96 #define L_EBASE   0x08
  97 
  98 /* 
  99  * to access the am7990-regs, you have to write
 100  * reg-number into L_ADDRREG, then you can access it using L_DATAREG
 101  */
 102 #define CSR0 0x00
 103 #define CSR1 0x01
 104 #define CSR2 0x02
 105 #define CSR3 0x03
 106 
 107 /* if you #define NO_STATIC the driver is faster but you will have (more) problems with >16MB memory */
 108 #undef NO_STATIC
 109 
 110 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
 111                            outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 112 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
 113                        inw(PORT+L_DATAREG))
 114 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 115 
 116 static int   ni65_probe1(struct device *dev,int);
 117 static void  ni65_interrupt(int irq, struct pt_regs *regs);
 118   static void recv_intr(struct device *dev);
 119   static void xmit_intr(struct device *dev);
 120 static int   ni65_open(struct device *dev);
 121    static int am7990_reinit(struct device *dev);
 122 static int   ni65_send_packet(struct sk_buff *skb, struct device *dev);
 123 static int   ni65_close(struct device *dev);
 124 static struct enet_statistics *ni65_get_stats(struct device *);
 125 
 126 static void set_multicast_list(struct device *dev);
 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 %#3lx, 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   if (p == NULL)
 250         return -ENOMEM;
 251   memset((char *) dev->priv,0,sizeof(struct priv));
 252 
 253   dev->open               = ni65_open;
 254   dev->stop               = ni65_close;
 255   dev->hard_start_xmit    = ni65_send_packet;
 256   dev->get_stats          = ni65_get_stats;
 257   dev->set_multicast_list = set_multicast_list;
 258 
 259   ether_setup(dev);
 260 
 261   dev->flags         &= ~IFF_MULTICAST;
 262   dev->interrupt      = 0;
 263   dev->tbusy          = 0;
 264   dev->start          = 0;
 265 
 266   if( (p->memptr = kmalloc(MEMSIZE,GFP_KERNEL)) == NULL) {
 267     printk("%s: Can't alloc TMD/RMD-buffer.\n",dev->name);
 268     return EAGAIN;
 269   }
 270   if( (unsigned long) (p->memptr + MEMSIZE) & 0xff000000) {
 271     printk("%s: Can't alloc TMD/RMD buffer in lower 16MB!\n",dev->name);
 272     return EAGAIN;
 273   }
 274   p->tmdhead = (struct tmd *) ((( (unsigned long)p->memptr ) + 8) & 0xfffffff8);
 275   p->rmdhead = (struct rmd *) (p->tmdhead + TMDNUM);   
 276 
 277 #ifndef NO_STATIC
 278    for(i=0;i<TMDNUM;i++)
 279    {
 280      if( (p->tmdbufs[i] = kmalloc(T_BUF_SIZE,GFP_ATOMIC)) == NULL) {
 281        printk("%s: Can't alloc Xmit-Mem.\n",dev->name);
 282        return EAGAIN;
 283      }
 284      if( (unsigned long) (p->tmdbufs[i]+T_BUF_SIZE) & 0xff000000) {
 285        printk("%s: Can't alloc Xmit-Mem in lower 16MB!\n",dev->name);
 286        return EAGAIN;
 287      }
 288    }
 289 #endif
 290 
 291    for(i=0;i<RMDNUM;i++)
 292    {
 293      if( (p->recv_skb[i] = dev_alloc_skb(R_BUF_SIZE)) == NULL) {
 294        printk("%s: unable to alloc recv-mem\n",dev->name);
 295        return EAGAIN;
 296      }
 297      if( (unsigned long) (p->recv_skb[i]->data + R_BUF_SIZE) & 0xff000000) {
 298        printk("%s: unable to alloc receive-memory in lower 16MB!\n",dev->name);
 299        return EAGAIN;
 300      }
 301    }
 302 
 303   return 0; /* we've found everything */
 304 }
 305 
 306 /* 
 307  * init lance (write init-values .. init-buffers) (open-helper)
 308  */
 309 
 310 static int am7990_reinit(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 311 {
 312    int i,j;
 313    struct tmd *tmdp;
 314    struct rmd *rmdp;
 315    struct priv *p = (struct priv *) dev->priv;
 316 
 317    p->lock = 0;
 318    p->xmit_queued = 0;
 319 
 320    disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 321    set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 322    enable_dma(dev->dma); 
 323 
 324    outw(0,PORT+L_RESET); /* first: reset the card */
 325    if(inw(PORT+L_DATAREG) != 0x4)
 326    {
 327      printk("%s: can't RESET ni6510 card: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 328      disable_dma(dev->dma);
 329      free_dma(dev->dma);
 330      free_irq(dev->irq);
 331      return 0;
 332    }
 333 
 334    /* here: memset all buffs to zero */
 335 
 336    memset(p->memptr,0,MEMSIZE);
 337 
 338    p->tmdnum = 0; p->tmdlast = 0;
 339    for(i=0;i<TMDNUM;i++)
 340    {
 341      tmdp = p->tmdhead + i;
 342 #ifndef NO_STATIC
 343      tmdp->u.buffer = (unsigned long) p->tmdbufs[i];     
 344 #endif
 345      tmdp->u.s.status = XMIT_START | XMIT_END;
 346    }
 347 
 348    p->rmdnum = 0;
 349    for(i=0;i<RMDNUM;i++)
 350    {
 351      rmdp = p->rmdhead + i;
 352      rmdp->u.buffer = (unsigned long) p->recv_skb[i]->data;
 353      rmdp->u.s.status = RCV_OWN;
 354      rmdp->blen = -R_BUF_SIZE;
 355      rmdp->mlen = 0;
 356    }
 357    
 358    for(i=0;i<6;i++)
 359    {
 360      p->ib.eaddr[i] = dev->dev_addr[i];
 361    }
 362    p->ib.mode = 0;
 363    for(i=0;i<8;i++) 
 364      p->ib.filter[i] = 0;
 365    p->ib.trplow = (unsigned short) (( (unsigned long) p->tmdhead ) & 0xffff);
 366    p->ib.trphigh = (unsigned short) ((( (unsigned long) p->tmdhead )>>16) & 0x00ff) | TMDNUMMASK; 
 367    p->ib.rrplow = (unsigned short) (( (unsigned long) p->rmdhead ) & 0xffff);
 368    p->ib.rrphigh = (unsigned short) ((( (unsigned long) p->rmdhead )>>16) & 0x00ff) | RMDNUMMASK;
 369 
 370    writereg(0,CSR3);  /* busmaster/no word-swap */
 371    writereg((unsigned short) (((unsigned long) &(p->ib)) & 0xffff),CSR1);
 372    writereg((unsigned short) (((unsigned long) &(p->ib))>>16),CSR2);
 373    
 374    writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 375 
 376   /*
 377    * NOW, WE NEVER WILL CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED 
 378    */
 379 
 380     for(i=0;i<5;i++)
 381     {
 382       for(j=0;j<2000000;j++); /* wait a while */
 383       if(inw(PORT+L_DATAREG) & CSR0_IDON) break; /* init ok ? */
 384     }
 385     if(i == 5) 
 386     {
 387       printk("%s: can't init am7990, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 388       disable_dma(dev->dma);
 389       free_dma(dev->dma);
 390       free_irq(dev->irq);
 391       return 0; /* false */
 392     } 
 393 
 394     writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); /* start lance , enable interrupts */
 395 
 396     return 1; /* OK */
 397 }
 398  
 399 /* 
 400  * interrupt handler  
 401  */
 402 
 403 static void ni65_interrupt(int irq, struct pt_regs * regs)
     /* [previous][next][first][last][top][bottom][index][help] */
 404 {
 405   int csr0;
 406   struct device *dev = (struct device *) irq2dev_map[irq];
 407 
 408   if (dev == NULL) {
 409     printk ("net_interrupt(): irq %d for unknown device.\n", irq);
 410     return;
 411   }
 412 
 413   csr0 = inw(PORT+L_DATAREG);
 414   writedatareg(csr0 & CSR0_CLRALL); /* ack interrupts, disable int. */
 415 
 416   dev->interrupt = 1;
 417 
 418   if(csr0 & CSR0_ERR)
 419   {
 420      struct priv *p = (struct priv *) dev->priv;
 421 
 422      if(csr0 & CSR0_BABL)
 423        p->stats.tx_errors++;
 424      if(csr0 & CSR0_MISS)
 425        p->stats.rx_errors++;
 426   }
 427 
 428   if(csr0 & CSR0_RINT) /* RECV-int? */
 429   { 
 430     recv_intr(dev);
 431   }
 432   if(csr0 & CSR0_TINT) /* XMIT-int? */
 433   {  
 434     xmit_intr(dev);
 435   }
 436 
 437   writedatareg(CSR0_INEA);  /* reenable inter. */
 438   dev->interrupt = 0;
 439 
 440   return;
 441 }
 442 
 443 /*
 444  * We have received an Xmit-Interrupt ..
 445  * send a new packet if necessary
 446  */
 447 
 448 static void xmit_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 449 {
 450   int tmdstat;
 451   struct tmd *tmdp;
 452   struct priv *p = (struct priv *) dev->priv;
 453 
 454 #ifdef NO_STATIC
 455   struct sk_buff *skb;
 456 #endif
 457 
 458   while(p->xmit_queued)
 459   {
 460     tmdp = p->tmdhead + p->tmdlast;
 461     tmdstat = tmdp->u.s.status;
 462     if(tmdstat & XMIT_OWN)
 463       break;
 464 #ifdef NO_STATIC
 465     skb = (struct sk_buff *) p->tmdbufs[p->tmdlast];
 466     dev_kfree_skb(skb,FREE_WRITE); 
 467 #endif
 468 
 469     if(tmdstat & XMIT_ERR)
 470     {
 471       printk("%s: xmit-error: %04x %04x\n",dev->name,(int) tmdstat,(int) tmdp->status2);
 472       if(tmdp->status2 & XMIT_TDRMASK) 
 473         printk("%s: tdr-problems (e.g. no resistor)\n",dev->name);
 474 
 475      /* checking some errors */
 476       if(tmdp->status2 & XMIT_RTRY) 
 477         p->stats.tx_aborted_errors++;
 478       if(tmdp->status2 & XMIT_LCAR) 
 479         p->stats.tx_carrier_errors++;
 480       p->stats.tx_errors++;
 481       tmdp->status2 = 0;
 482     }
 483     else
 484       p->stats.tx_packets++;
 485 
 486     p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 487     if(p->tmdlast == p->tmdnum)
 488       p->xmit_queued = 0;
 489   }
 490 
 491   dev->tbusy = 0;
 492   mark_bh(NET_BH);
 493 }
 494 
 495 /*
 496  * We have received a packet
 497  */
 498 
 499 static void recv_intr(struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 500 {
 501   struct rmd *rmdp; 
 502   int rmdstat,len;
 503   struct sk_buff *skb,*skb1;
 504   struct priv *p = (struct priv *) dev->priv;
 505 
 506   rmdp = p->rmdhead + p->rmdnum;
 507   while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
 508   {
 509     if( (rmdstat & (RCV_START | RCV_END)) != (RCV_START | RCV_END) ) /* is packet start & end? */ 
 510     {
 511       if(rmdstat & RCV_START)
 512       {
 513         p->stats.rx_errors++;
 514         p->stats.rx_length_errors++;
 515         printk("%s: packet too long\n",dev->name);
 516       }
 517       rmdp->u.s.status = RCV_OWN; /* change owner */
 518     }
 519     else if(rmdstat & RCV_ERR)
 520     {
 521       printk("%s: receive-error: %04x\n",dev->name,(int) rmdstat );
 522       p->stats.rx_errors++;
 523       if(rmdstat & RCV_FRAM) p->stats.rx_frame_errors++;
 524       if(rmdstat & RCV_OFLO) p->stats.rx_over_errors++;
 525       if(rmdstat & RCV_CRC)  p->stats.rx_crc_errors++;
 526       rmdp->u.s.status = RCV_OWN;
 527       printk("%s: lance-status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 528     }
 529     else
 530     {
 531       len = (rmdp->mlen & 0x0fff) - 4; /* -4: ignore FCS */
 532       skb = dev_alloc_skb(R_BUF_SIZE);
 533       if(skb != NULL)
 534       {
 535         if( (unsigned long) (skb->data + R_BUF_SIZE) & 0xff000000) {
 536           memcpy(skb_put(skb,len),p->recv_skb[p->rmdnum]->data,len);
 537           skb1 = skb;
 538         }
 539         else {
 540           skb1 = p->recv_skb[p->rmdnum];
 541           p->recv_skb[p->rmdnum] = skb;
 542           rmdp->u.buffer = (unsigned long) skb_put(skb1,len);
 543         }
 544         rmdp->u.s.status = RCV_OWN;
 545         rmdp->mlen = 0;   /* not necc ???? */
 546         skb1->dev = dev;
 547         p->stats.rx_packets++;
 548         skb1->protocol=eth_type_trans(skb1,dev);
 549         netif_rx(skb1);
 550       }
 551       else
 552       {
 553         rmdp->u.s.status = RCV_OWN;
 554         printk("%s: can't alloc new sk_buff\n",dev->name);
 555         p->stats.rx_dropped++;
 556       }
 557     }
 558     p->rmdnum++; p->rmdnum &= RMDNUM-1;
 559     rmdp = p->rmdhead + p->rmdnum;
 560   }
 561 }
 562 
 563 /*
 564  * kick xmitter ..
 565  */
 566 
 567 static int ni65_send_packet(struct sk_buff *skb, struct device *dev)
     /* [previous][next][first][last][top][bottom][index][help] */
 568 {
 569   struct priv *p = (struct priv *) dev->priv;
 570   struct tmd *tmdp;
 571 
 572   if(dev->tbusy)
 573   {
 574     int tickssofar = jiffies - dev->trans_start;
 575     if (tickssofar < 25)
 576       return 1;
 577 
 578     printk("%s: xmitter timed out, try to restart!\n",dev->name);
 579     am7990_reinit(dev);
 580     dev->tbusy=0;
 581     dev->trans_start = jiffies;
 582   }
 583 
 584   if(skb == NULL)
 585   {
 586     dev_tint(dev);
 587     return 0;
 588   }
 589 
 590   if (skb->len <= 0)
 591     return 0;
 592 
 593   if (set_bit(0, (void*)&dev->tbusy) != 0)
 594   {
 595      printk("%s: Transmitter access conflict.\n", dev->name);
 596      return 1;
 597   }
 598   if(set_bit(0,(void*) &p->lock) != 0)
 599   {
 600     printk("%s: Queue was locked!\n",dev->name);
 601     return 1;
 602   }
 603 
 604   {
 605     short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
 606 
 607     tmdp = p->tmdhead + p->tmdnum;
 608 
 609 #ifdef NO_STATIC
 610     tmdp->u.buffer = (unsigned long) (skb->data);
 611     p->tmdbufs[p->tmdnum] = skb;
 612 #else
 613     memcpy((char *) (tmdp->u.buffer & 0x00ffffff),(char *)skb->data,skb->len);
 614     dev_kfree_skb (skb, FREE_WRITE);
 615 #endif
 616     tmdp->blen = -len;
 617     tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
 618 
 619     cli();
 620     p->xmit_queued = 1;
 621     writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
 622     p->tmdnum++; p->tmdnum &= TMDNUM-1;
 623  
 624     if( !((p->tmdhead + p->tmdnum)->u.s.status & XMIT_OWN) ) 
 625       dev->tbusy = 0;
 626     p->lock = 0;
 627     sti();
 628 
 629     dev->trans_start = jiffies;
 630 
 631   }
 632 
 633   return 0;
 634 }
 635 
 636 static struct enet_statistics *ni65_get_stats(struct device *dev)
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 637 {
 638   return &((struct priv *) dev->priv)->stats;
 639 }
 640 
 641 static void set_multicast_list(struct device *dev)
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 642 {
 643 }
 644 
 645 /*
 646  * END of ni65.c 
 647  */
 648 

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