drivers/net/ethernet/i825xx/sun3_82586.c

   1 /*
   2  * Sun3 i82586 Ethernet driver
   3  *
   4  * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net)
   5  *
   6  * Original copyright follows:
   7  * --------------------------
   8  *
   9  * net-3-driver for the NI5210 card (i82586 Ethernet chip)
  10  *
  11  * This is an extension to the Linux operating system, and is covered by the
  12  * same Gnu Public License that covers that work.
  13  *
  14  * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
  15  * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
  16  * --------------------------
  17  *
  18  * Consult ni52.c for further notes from the original driver.
  19  *
  20  * This incarnation currently supports the OBIO version of the i82586 chip
  21  * used in certain sun3 models.  It should be fairly doable to expand this
  22  * to support VME if I should every acquire such a board.
  23  *
  24  */
  25
  26 static int debuglevel = 0; /* debug-printk 0: off 1: a few 2: more */
  27 static int automatic_resume = 0; /* experimental .. better should be zero */
  28 static int rfdadd = 0; /* rfdadd=1 may be better for 8K MEM cards */
  29 static int fifo=0x8;    /* don't change */
  30
  31 #include <linux/kernel.h>
  32 #include <linux/string.h>
  33 #include <linux/errno.h>
  34 #include <linux/ioport.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/delay.h>
  37 #include <linux/init.h>
  38 #include <linux/bitops.h>
  39 #include <asm/io.h>
  40 #include <asm/idprom.h>
  41 #include <asm/machines.h>
  42 #include <asm/sun3mmu.h>
  43 #include <asm/dvma.h>
  44 #include <asm/byteorder.h>
  45
  46 #include <linux/netdevice.h>
  47 #include <linux/etherdevice.h>
  48 #include <linux/skbuff.h>
  49
  50 #include "sun3_82586.h"
  51
  52 #define DRV_NAME "sun3_82586"
  53
  54 #define DEBUG       /* debug on */
  55 #define SYSBUSVAL 0 /* 16 Bit */
  56 #define SUN3_82586_TOTAL_SIZE   PAGE_SIZE
  57
  58 #define sun3_attn586()  {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
  59 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
  60 #define sun3_disint()   {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
  61 #define sun3_enaint()   {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
  62 #define sun3_active()   {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
  63
  64 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
  65 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
  66 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
  67
  68 /******************* how to calculate the buffers *****************************
  69
  70   * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
  71   * --------------- in a different (more stable?) mode. Only in this mode it's
  72   *                 possible to configure the driver with 'NO_NOPCOMMANDS'
  73
  74 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
  75 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
  76 sizeof(rfd) = 24; sizeof(rbd) = 12;
  77 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
  78 sizeof(nop_cmd) = 8;
  79
  80   * if you don't know the driver, better do not change these values: */
  81
  82 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
  83 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
  84 #define NUM_XMIT_BUFFS 1    /* config for 32K shmem */
  85 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
  86 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
  87 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
  88 #define NO_NOPCOMMANDS      /* only possible with NUM_XMIT_BUFFS=1 */
  89
  90 /**************************************************************************/
  91
  92 /* different DELAYs */
  93 #define DELAY(x) mdelay(32 * x);
  94 #define DELAY_16(); { udelay(16); }
  95 #define DELAY_18(); { udelay(4); }
  96
  97 /* wait for command with timeout: */
  98 #define WAIT_4_SCB_CMD() \
  99 { int i; \
 100   for(i=0;i<16384;i++) { \
 101     if(!p->scb->cmd_cuc) break; \
 102     DELAY_18(); \
 103     if(i == 16383) { \
 104       printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
 105        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 106
 107 #define WAIT_4_SCB_CMD_RUC() { int i; \
 108   for(i=0;i<16384;i++) { \
 109     if(!p->scb->cmd_ruc) break; \
 110     DELAY_18(); \
 111     if(i == 16383) { \
 112       printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
 113        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 114
 115 #define WAIT_4_STAT_COMPL(addr) { int i; \
 116    for(i=0;i<32767;i++) { \
 117      if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
 118      DELAY_16(); DELAY_16(); } }
 119
 120 static int     sun3_82586_probe1(struct net_device *dev,int ioaddr);
 121 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id);
 122 static int     sun3_82586_open(struct net_device *dev);
 123 static int     sun3_82586_close(struct net_device *dev);
 124 static int     sun3_82586_send_packet(struct sk_buff *,struct net_device *);
 125 static struct  net_device_stats *sun3_82586_get_stats(struct net_device *dev);
 126 static void    set_multicast_list(struct net_device *dev);
 127 static void    sun3_82586_timeout(struct net_device *dev);
 128 #if 0
 129 static void    sun3_82586_dump(struct net_device *,void *);
 130 #endif
 131
 132 /* helper-functions */
 133 static int     init586(struct net_device *dev);
 134 static int     check586(struct net_device *dev,char *where,unsigned size);
 135 static void    alloc586(struct net_device *dev);
 136 static void    startrecv586(struct net_device *dev);
 137 static void   *alloc_rfa(struct net_device *dev,void *ptr);
 138 static void    sun3_82586_rcv_int(struct net_device *dev);
 139 static void    sun3_82586_xmt_int(struct net_device *dev);
 140 static void    sun3_82586_rnr_int(struct net_device *dev);
 141
 142 struct priv
 143 {
 144         unsigned long base;
 145         char *memtop;
 146         long int lock;
 147         int reseted;
 148         volatile struct rfd_struct      *rfd_last,*rfd_top,*rfd_first;
 149         volatile struct scp_struct      *scp;   /* volatile is important */
 150         volatile struct iscp_struct     *iscp;  /* volatile is important */
 151         volatile struct scb_struct      *scb;   /* volatile is important */
 152         volatile struct tbd_struct      *xmit_buffs[NUM_XMIT_BUFFS];
 153         volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
 154 #if (NUM_XMIT_BUFFS == 1)
 155         volatile struct nop_cmd_struct *nop_cmds[2];
 156 #else
 157         volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
 158 #endif
 159         volatile int            nop_point,num_recv_buffs;
 160         volatile char           *xmit_cbuffs[NUM_XMIT_BUFFS];
 161         volatile int            xmit_count,xmit_last;
 162 };
 163
 164 /**********************************************
 165  * close device
 166  */
 167 static int sun3_82586_close(struct net_device *dev)
 168 {
 169         free_irq(dev->irq, dev);
 170
 171         sun3_reset586(); /* the hard way to stop the receiver */
 172
 173         netif_stop_queue(dev);
 174
 175         return 0;
 176 }
 177
 178 /**********************************************
 179  * open device
 180  */
 181 static int sun3_82586_open(struct net_device *dev)
 182 {
 183         int ret;
 184
 185         sun3_disint();
 186         alloc586(dev);
 187         init586(dev);
 188         startrecv586(dev);
 189         sun3_enaint();
 190
 191         ret = request_irq(dev->irq, sun3_82586_interrupt,0,dev->name,dev);
 192         if (ret)
 193         {
 194                 sun3_reset586();
 195                 return ret;
 196         }
 197
 198         netif_start_queue(dev);
 199
 200         return 0; /* most done by init */
 201 }
 202
 203 /**********************************************
 204  * Check to see if there's an 82586 out there.
 205  */
 206 static int check586(struct net_device *dev,char *where,unsigned size)
 207 {
 208         struct priv pb;
 209         struct priv *p = &pb;
 210         char *iscp_addr;
 211         int i;
 212
 213         p->base = (unsigned long) dvma_btov(0);
 214         p->memtop = (char *)dvma_btov((unsigned long)where);
 215         p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
 216         memset((char *)p->scp,0, sizeof(struct scp_struct));
 217         for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
 218                 if(((char *)p->scp)[i])
 219                         return 0;
 220         p->scp->sysbus = SYSBUSVAL;                             /* 1 = 8Bit-Bus, 0 = 16 Bit */
 221         if(p->scp->sysbus != SYSBUSVAL)
 222                 return 0;
 223
 224         iscp_addr = (char *)dvma_btov((unsigned long)where);
 225
 226         p->iscp = (struct iscp_struct *) iscp_addr;
 227         memset((char *)p->iscp,0, sizeof(struct iscp_struct));
 228
 229         p->scp->iscp = make24(p->iscp);
 230         p->iscp->busy = 1;
 231
 232         sun3_reset586();
 233         sun3_attn586();
 234         DELAY(1);       /* wait a while... */
 235
 236         if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
 237                 return 0;
 238
 239         return 1;
 240 }
 241
 242 /******************************************************************
 243  * set iscp at the right place, called by sun3_82586_probe1 and open586.
 244  */
 245 static void alloc586(struct net_device *dev)
 246 {
 247         struct priv *p = netdev_priv(dev);
 248
 249         sun3_reset586();
 250         DELAY(1);
 251
 252         p->scp  = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
 253         p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start);
 254         p->scb  = (struct scb_struct *)  ((char *)p->iscp + sizeof(struct iscp_struct));
 255
 256         memset((char *) p->iscp,0,sizeof(struct iscp_struct));
 257         memset((char *) p->scp ,0,sizeof(struct scp_struct));
 258
 259         p->scp->iscp = make24(p->iscp);
 260         p->scp->sysbus = SYSBUSVAL;
 261         p->iscp->scb_offset = make16(p->scb);
 262         p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
 263
 264         p->iscp->busy = 1;
 265         sun3_reset586();
 266         sun3_attn586();
 267
 268         DELAY(1);
 269
 270         if(p->iscp->busy)
 271                 printk("%s: Init-Problems (alloc).\n",dev->name);
 272
 273         p->reseted = 0;
 274
 275         memset((char *)p->scb,0,sizeof(struct scb_struct));
 276 }
 277
 278 struct net_device * __init sun3_82586_probe(int unit)
 279 {
 280         struct net_device *dev;
 281         unsigned long ioaddr;
 282         static int found = 0;
 283         int err = -ENOMEM;
 284
 285         /* check that this machine has an onboard 82586 */
 286         switch(idprom->id_machtype) {
 287         case SM_SUN3|SM_3_160:
 288         case SM_SUN3|SM_3_260:
 289                 /* these machines have 82586 */
 290                 break;
 291
 292         default:
 293                 return ERR_PTR(-ENODEV);
 294         }
 295
 296         if (found)
 297                 return ERR_PTR(-ENODEV);
 298
 299         ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
 300         if (!ioaddr)
 301                 return ERR_PTR(-ENOMEM);
 302         found = 1;
 303
 304         dev = alloc_etherdev(sizeof(struct priv));
 305         if (!dev)
 306                 goto out;
 307         if (unit >= 0) {
 308                 sprintf(dev->name, "eth%d", unit);
 309                 netdev_boot_setup_check(dev);
 310         }
 311
 312         dev->irq = IE_IRQ;
 313         dev->base_addr = ioaddr;
 314         err = sun3_82586_probe1(dev, ioaddr);
 315         if (err)
 316                 goto out1;
 317         err = register_netdev(dev);
 318         if (err)
 319                 goto out2;
 320         return dev;
 321
 322 out2:
 323         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 324 out1:
 325         free_netdev(dev);
 326 out:
 327         iounmap((void __iomem *)ioaddr);
 328         return ERR_PTR(err);
 329 }
 330
 331 static const struct net_device_ops sun3_82586_netdev_ops = {
 332         .ndo_open               = sun3_82586_open,
 333         .ndo_stop               = sun3_82586_close,
 334         .ndo_start_xmit         = sun3_82586_send_packet,
 335         .ndo_set_rx_mode        = set_multicast_list,
 336         .ndo_tx_timeout         = sun3_82586_timeout,
 337         .ndo_get_stats          = sun3_82586_get_stats,
 338         .ndo_validate_addr      = eth_validate_addr,
 339         .ndo_set_mac_address    = eth_mac_addr,
 340 };
 341
 342 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
 343 {
 344         int i, size, retval;
 345
 346         if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
 347                 return -EBUSY;
 348
 349         /* copy in the ethernet address from the prom */
 350         for(i = 0; i < 6 ; i++)
 351              dev->dev_addr[i] = idprom->id_ethaddr[i];
 352
 353         printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
 354
 355         /*
 356          * check (or search) IO-Memory, 32K
 357          */
 358         size = 0x8000;
 359
 360         dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
 361         dev->mem_end = dev->mem_start + size;
 362
 363         if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
 364                 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
 365                 retval = -ENODEV;
 366                 goto out;
 367         }
 368         if(!check586(dev,(char *) dev->mem_start,size)) {
 369                 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
 370                 retval = -ENODEV;
 371                 goto out;
 372         }
 373
 374         ((struct priv *)netdev_priv(dev))->memtop =
 375                                         (char *)dvma_btov(dev->mem_start);
 376         ((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0);
 377         alloc586(dev);
 378
 379         /* set number of receive-buffs according to memsize */
 380         if(size == 0x2000)
 381                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 382                                                         NUM_RECV_BUFFS_8;
 383         else if(size == 0x4000)
 384                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 385                                                         NUM_RECV_BUFFS_16;
 386         else
 387                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 388                                                         NUM_RECV_BUFFS_32;
 389
 390         printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
 391
 392         dev->netdev_ops         = &sun3_82586_netdev_ops;
 393         dev->watchdog_timeo     = HZ/20;
 394
 395         dev->if_port            = 0;
 396         return 0;
 397 out:
 398         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 399         return retval;
 400 }
 401
 402
 403 static int init586(struct net_device *dev)
 404 {
 405         void *ptr;
 406         int i,result=0;
 407         struct priv *p = netdev_priv(dev);
 408         volatile struct configure_cmd_struct    *cfg_cmd;
 409         volatile struct iasetup_cmd_struct *ias_cmd;
 410         volatile struct tdr_cmd_struct *tdr_cmd;
 411         volatile struct mcsetup_cmd_struct *mc_cmd;
 412         struct netdev_hw_addr *ha;
 413         int num_addrs=netdev_mc_count(dev);
 414
 415         ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
 416
 417         cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
 418         cfg_cmd->cmd_status     = 0;
 419         cfg_cmd->cmd_cmd        = swab16(CMD_CONFIGURE | CMD_LAST);
 420         cfg_cmd->cmd_link       = 0xffff;
 421
 422         cfg_cmd->byte_cnt       = 0x0a; /* number of cfg bytes */
 423         cfg_cmd->fifo           = fifo; /* fifo-limit (8=tx:32/rx:64) */
 424         cfg_cmd->sav_bf         = 0x40; /* hold or discard bad recv frames (bit 7) */
 425         cfg_cmd->adr_len        = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
 426         cfg_cmd->priority       = 0x00;
 427         cfg_cmd->ifs            = 0x60;
 428         cfg_cmd->time_low       = 0x00;
 429         cfg_cmd->time_high      = 0xf2;
 430         cfg_cmd->promisc        = 0;
 431         if(dev->flags & IFF_ALLMULTI) {
 432                 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
 433                 if(num_addrs > len)     {
 434                         printk("%s: switching to promisc. mode\n",dev->name);
 435                         cfg_cmd->promisc = 1;
 436                 }
 437         }
 438         if(dev->flags&IFF_PROMISC)
 439                 cfg_cmd->promisc = 1;
 440         cfg_cmd->carr_coll      = 0x00;
 441
 442         p->scb->cbl_offset      = make16(cfg_cmd);
 443         p->scb->cmd_ruc         = 0;
 444
 445         p->scb->cmd_cuc         = CUC_START; /* cmd.-unit start */
 446         sun3_attn586();
 447
 448         WAIT_4_STAT_COMPL(cfg_cmd);
 449
 450         if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
 451         {
 452                 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
 453                 return 1;
 454         }
 455
 456         /*
 457          * individual address setup
 458          */
 459
 460         ias_cmd = (struct iasetup_cmd_struct *)ptr;
 461
 462         ias_cmd->cmd_status     = 0;
 463         ias_cmd->cmd_cmd        = swab16(CMD_IASETUP | CMD_LAST);
 464         ias_cmd->cmd_link       = 0xffff;
 465
 466         memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
 467
 468         p->scb->cbl_offset = make16(ias_cmd);
 469
 470         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 471         sun3_attn586();
 472
 473         WAIT_4_STAT_COMPL(ias_cmd);
 474
 475         if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
 476                 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
 477                 return 1;
 478         }
 479
 480         /*
 481          * TDR, wire check .. e.g. no resistor e.t.c
 482          */
 483
 484         tdr_cmd = (struct tdr_cmd_struct *)ptr;
 485
 486         tdr_cmd->cmd_status     = 0;
 487         tdr_cmd->cmd_cmd        = swab16(CMD_TDR | CMD_LAST);
 488         tdr_cmd->cmd_link       = 0xffff;
 489         tdr_cmd->status         = 0;
 490
 491         p->scb->cbl_offset = make16(tdr_cmd);
 492         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 493         sun3_attn586();
 494
 495         WAIT_4_STAT_COMPL(tdr_cmd);
 496
 497         if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
 498         {
 499                 printk("%s: Problems while running the TDR.\n",dev->name);
 500         }
 501         else
 502         {
 503                 DELAY_16(); /* wait for result */
 504                 result = swab16(tdr_cmd->status);
 505
 506                 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 507                 sun3_attn586(); /* ack the interrupts */
 508
 509                 if(result & TDR_LNK_OK)
 510                         ;
 511                 else if(result & TDR_XCVR_PRB)
 512                         printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
 513                 else if(result & TDR_ET_OPN)
 514                         printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 515                 else if(result & TDR_ET_SRT)
 516                 {
 517                         if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
 518                                 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 519                 }
 520                 else
 521                         printk("%s: TDR: Unknown status %04x\n",dev->name,result);
 522         }
 523
 524         /*
 525          * Multicast setup
 526          */
 527         if(num_addrs && !(dev->flags & IFF_PROMISC) )
 528         {
 529                 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
 530                 mc_cmd->cmd_status = 0;
 531                 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
 532                 mc_cmd->cmd_link = 0xffff;
 533                 mc_cmd->mc_cnt = swab16(num_addrs * 6);
 534
 535                 i = 0;
 536                 netdev_for_each_mc_addr(ha, dev)
 537                         memcpy((char *) mc_cmd->mc_list[i++],
 538                                ha->addr, ETH_ALEN);
 539
 540                 p->scb->cbl_offset = make16(mc_cmd);
 541                 p->scb->cmd_cuc = CUC_START;
 542                 sun3_attn586();
 543
 544                 WAIT_4_STAT_COMPL(mc_cmd);
 545
 546                 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
 547                         printk("%s: Can't apply multicast-address-list.\n",dev->name);
 548         }
 549
 550         /*
 551          * alloc nop/xmit-cmds
 552          */
 553 #if (NUM_XMIT_BUFFS == 1)
 554         for(i=0;i<2;i++)
 555         {
 556                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 557                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 558                 p->nop_cmds[i]->cmd_status      = 0;
 559                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 560                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 561         }
 562 #else
 563         for(i=0;i<NUM_XMIT_BUFFS;i++)
 564         {
 565                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 566                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 567                 p->nop_cmds[i]->cmd_status      = 0;
 568                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 569                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 570         }
 571 #endif
 572
 573         ptr = alloc_rfa(dev,ptr); /* init receive-frame-area */
 574
 575         /*
 576          * alloc xmit-buffs / init xmit_cmds
 577          */
 578         for(i=0;i<NUM_XMIT_BUFFS;i++)
 579         {
 580                 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
 581                 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
 582                 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
 583                 ptr = (char *) ptr + XMIT_BUFF_SIZE;
 584                 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
 585                 ptr = (char *) ptr + sizeof(struct tbd_struct);
 586                 if(ptr > (void *)dev->mem_end)
 587                 {
 588                         printk("%s: not enough shared-mem for your configuration!\n",dev->name);
 589                         return 1;
 590                 }
 591                 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
 592                 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
 593                 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
 594                 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
 595                 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
 596                 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
 597                 p->xmit_buffs[i]->next = 0xffff;
 598                 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
 599         }
 600
 601         p->xmit_count = 0;
 602         p->xmit_last    = 0;
 603 #ifndef NO_NOPCOMMANDS
 604         p->nop_point    = 0;
 605 #endif
 606
 607          /*
 608                 * 'start transmitter'
 609                 */
 610 #ifndef NO_NOPCOMMANDS
 611         p->scb->cbl_offset = make16(p->nop_cmds[0]);
 612         p->scb->cmd_cuc = CUC_START;
 613         sun3_attn586();
 614         WAIT_4_SCB_CMD();
 615 #else
 616         p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
 617         p->xmit_cmds[0]->cmd_cmd        = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
 618 #endif
 619
 620         /*
 621          * ack. interrupts
 622          */
 623         p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 624         sun3_attn586();
 625         DELAY_16();
 626
 627         sun3_enaint();
 628         sun3_active();
 629
 630         return 0;
 631 }
 632
 633 /******************************************************
 634  * This is a helper routine for sun3_82586_rnr_int() and init586().
 635  * It sets up the Receive Frame Area (RFA).
 636  */
 637
 638 static void *alloc_rfa(struct net_device *dev,void *ptr)
 639 {
 640         volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
 641         volatile struct rbd_struct *rbd;
 642         int i;
 643         struct priv *p = netdev_priv(dev);
 644
 645         memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
 646         p->rfd_first = rfd;
 647
 648         for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
 649                 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
 650                 rfd[i].rbd_offset = 0xffff;
 651         }
 652         rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;         /* RU suspend */
 653
 654         ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
 655
 656         rbd = (struct rbd_struct *) ptr;
 657         ptr = (void *) (rbd + p->num_recv_buffs);
 658
 659          /* clr descriptors */
 660         memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
 661
 662         for(i=0;i<p->num_recv_buffs;i++)
 663         {
 664                 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
 665                 rbd[i].size = swab16(RECV_BUFF_SIZE);
 666                 rbd[i].buffer = make24(ptr);
 667                 ptr = (char *) ptr + RECV_BUFF_SIZE;
 668         }
 669
 670         p->rfd_top      = p->rfd_first;
 671         p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
 672
 673         p->scb->rfa_offset              = make16(p->rfd_first);
 674         p->rfd_first->rbd_offset        = make16(rbd);
 675
 676         return ptr;
 677 }
 678
 679
 680 /**************************************************
 681  * Interrupt Handler ...
 682  */
 683
 684 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
 685 {
 686         struct net_device *dev = dev_id;
 687         unsigned short stat;
 688         int cnt=0;
 689         struct priv *p;
 690
 691         if (!dev) {
 692                 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
 693                 return IRQ_NONE;
 694         }
 695         p = netdev_priv(dev);
 696
 697         if(debuglevel > 1)
 698                 printk("I");
 699
 700         WAIT_4_SCB_CMD(); /* wait for last command      */
 701
 702         while((stat=p->scb->cus & STAT_MASK))
 703         {
 704                 p->scb->cmd_cuc = stat;
 705                 sun3_attn586();
 706
 707                 if(stat & STAT_FR)       /* received a frame */
 708                         sun3_82586_rcv_int(dev);
 709
 710                 if(stat & STAT_RNR) /* RU went 'not ready' */
 711                 {
 712                         printk("(R)");
 713                         if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
 714                         {
 715                                 WAIT_4_SCB_CMD();
 716                                 p->scb->cmd_ruc = RUC_RESUME;
 717                                 sun3_attn586();
 718                                 WAIT_4_SCB_CMD_RUC();
 719                         }
 720                         else
 721                         {
 722                                 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
 723                                 sun3_82586_rnr_int(dev);
 724                         }
 725                 }
 726
 727                 if(stat & STAT_CX)              /* command with I-bit set complete */
 728                          sun3_82586_xmt_int(dev);
 729
 730 #ifndef NO_NOPCOMMANDS
 731                 if(stat & STAT_CNA)     /* CU went 'not ready' */
 732                 {
 733                         if(netif_running(dev))
 734                                 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
 735                 }
 736 #endif
 737
 738                 if(debuglevel > 1)
 739                         printk("%d",cnt++);
 740
 741                 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
 742                 if(p->scb->cmd_cuc)      /* timed out? */
 743                 {
 744                         printk("%s: Acknowledge timed out.\n",dev->name);
 745                         sun3_disint();
 746                         break;
 747                 }
 748         }
 749
 750         if(debuglevel > 1)
 751                 printk("i");
 752         return IRQ_HANDLED;
 753 }
 754
 755 /*******************************************************
 756  * receive-interrupt
 757  */
 758
 759 static void sun3_82586_rcv_int(struct net_device *dev)
 760 {
 761         int status,cnt=0;
 762         unsigned short totlen;
 763         struct sk_buff *skb;
 764         struct rbd_struct *rbd;
 765         struct priv *p = netdev_priv(dev);
 766
 767         if(debuglevel > 0)
 768                 printk("R");
 769
 770         for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
 771         {
 772                         rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
 773
 774                         if(status & RFD_OK) /* frame received without error? */
 775                         {
 776                                 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
 777                                 {
 778                                         totlen &= RBD_MASK; /* length of this frame */
 779                                         rbd->status = 0;
 780                                         skb = netdev_alloc_skb(dev, totlen + 2);
 781                                         if(skb != NULL)
 782                                         {
 783                                                 skb_reserve(skb,2);
 784                                                 skb_put(skb,totlen);
 785                                                 skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen);
 786                                                 skb->protocol=eth_type_trans(skb,dev);
 787                                                 netif_rx(skb);
 788                                                 dev->stats.rx_packets++;
 789                                         }
 790                                         else
 791                                                 dev->stats.rx_dropped++;
 792                                 }
 793                                 else
 794                                 {
 795                                         int rstat;
 796                                                  /* free all RBD's until RBD_LAST is set */
 797                                         totlen = 0;
 798                                         while(!((rstat=swab16(rbd->status)) & RBD_LAST))
 799                                         {
 800                                                 totlen += rstat & RBD_MASK;
 801                                                 if(!rstat)
 802                                                 {
 803                                                         printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
 804                                                         break;
 805                                                 }
 806                                                 rbd->status = 0;
 807                                                 rbd = (struct rbd_struct *) make32(rbd->next);
 808                                         }
 809                                         totlen += rstat & RBD_MASK;
 810                                         rbd->status = 0;
 811                                         printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
 812                                         dev->stats.rx_dropped++;
 813                          }
 814                 }
 815                 else /* frame !(ok), only with 'save-bad-frames' */
 816                 {
 817                         printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
 818                         dev->stats.rx_errors++;
 819                 }
 820                 p->rfd_top->stat_high = 0;
 821                 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
 822                 p->rfd_top->rbd_offset = 0xffff;
 823                 p->rfd_last->last = 0;                          /* delete RFD_SUSP      */
 824                 p->rfd_last = p->rfd_top;
 825                 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
 826                 p->scb->rfa_offset = make16(p->rfd_top);
 827
 828                 if(debuglevel > 0)
 829                         printk("%d",cnt++);
 830         }
 831
 832         if(automatic_resume)
 833         {
 834                 WAIT_4_SCB_CMD();
 835                 p->scb->cmd_ruc = RUC_RESUME;
 836                 sun3_attn586();
 837                 WAIT_4_SCB_CMD_RUC();
 838         }
 839
 840 #ifdef WAIT_4_BUSY
 841         {
 842                 int i;
 843                 for(i=0;i<1024;i++)
 844                 {
 845                         if(p->rfd_top->status)
 846                                 break;
 847                         DELAY_16();
 848                         if(i == 1023)
 849                                 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
 850                 }
 851         }
 852 #endif
 853
 854 #if 0
 855         if(!at_least_one)
 856         {
 857                 int i;
 858                 volatile struct rfd_struct *rfds=p->rfd_top;
 859                 volatile struct rbd_struct *rbds;
 860                 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
 861                 for(i=0;i< (p->num_recv_buffs+4);i++)
 862                 {
 863                         rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
 864                         printk("%04x:%04x ",rfds->status,rbds->status);
 865                         rfds = (struct rfd_struct *) make32(rfds->next);
 866                 }
 867                 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
 868                 printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus);
 869         }
 870         old_at_least = at_least_one;
 871 #endif
 872
 873         if(debuglevel > 0)
 874                 printk("r");
 875 }
 876
 877 /**********************************************************
 878  * handle 'Receiver went not ready'.
 879  */
 880
 881 static void sun3_82586_rnr_int(struct net_device *dev)
 882 {
 883         struct priv *p = netdev_priv(dev);
 884
 885         dev->stats.rx_errors++;
 886
 887         WAIT_4_SCB_CMD();               /* wait for the last cmd, WAIT_4_FULLSTAT?? */
 888         p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
 889         sun3_attn586();
 890         WAIT_4_SCB_CMD_RUC();           /* wait for accept cmd. */
 891
 892         alloc_rfa(dev,(char *)p->rfd_first);
 893 /* maybe add a check here, before restarting the RU */
 894         startrecv586(dev); /* restart RU */
 895
 896         printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
 897
 898 }
 899
 900 /**********************************************************
 901  * handle xmit - interrupt
 902  */
 903
 904 static void sun3_82586_xmt_int(struct net_device *dev)
 905 {
 906         int status;
 907         struct priv *p = netdev_priv(dev);
 908
 909         if(debuglevel > 0)
 910                 printk("X");
 911
 912         status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
 913         if(!(status & STAT_COMPL))
 914                 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
 915
 916         if(status & STAT_OK)
 917         {
 918                 dev->stats.tx_packets++;
 919                 dev->stats.collisions += (status & TCMD_MAXCOLLMASK);
 920         }
 921         else
 922         {
 923                 dev->stats.tx_errors++;
 924                 if(status & TCMD_LATECOLL) {
 925                         printk("%s: late collision detected.\n",dev->name);
 926                         dev->stats.collisions++;
 927                 }
 928                 else if(status & TCMD_NOCARRIER) {
 929                         dev->stats.tx_carrier_errors++;
 930                         printk("%s: no carrier detected.\n",dev->name);
 931                 }
 932                 else if(status & TCMD_LOSTCTS)
 933                         printk("%s: loss of CTS detected.\n",dev->name);
 934                 else if(status & TCMD_UNDERRUN) {
 935                         dev->stats.tx_fifo_errors++;
 936                         printk("%s: DMA underrun detected.\n",dev->name);
 937                 }
 938                 else if(status & TCMD_MAXCOLL) {
 939                         printk("%s: Max. collisions exceeded.\n",dev->name);
 940                         dev->stats.collisions += 16;
 941                 }
 942         }
 943
 944 #if (NUM_XMIT_BUFFS > 1)
 945         if( (++p->xmit_last) == NUM_XMIT_BUFFS)
 946                 p->xmit_last = 0;
 947 #endif
 948         netif_wake_queue(dev);
 949 }
 950
 951 /***********************************************************
 952  * (re)start the receiver
 953  */
 954
 955 static void startrecv586(struct net_device *dev)
 956 {
 957         struct priv *p = netdev_priv(dev);
 958
 959         WAIT_4_SCB_CMD();
 960         WAIT_4_SCB_CMD_RUC();
 961         p->scb->rfa_offset = make16(p->rfd_first);
 962         p->scb->cmd_ruc = RUC_START;
 963         sun3_attn586();         /* start cmd. */
 964         WAIT_4_SCB_CMD_RUC();   /* wait for accept cmd. (no timeout!!) */
 965 }
 966
 967 static void sun3_82586_timeout(struct net_device *dev)
 968 {
 969         struct priv *p = netdev_priv(dev);
 970 #ifndef NO_NOPCOMMANDS
 971         if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
 972         {
 973                 netif_wake_queue(dev);
 974 #ifdef DEBUG
 975                 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
 976                 printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)swab16(p->xmit_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[1]->cmd_status),(int)p->nop_point);
 977 #endif
 978                 p->scb->cmd_cuc = CUC_ABORT;
 979                 sun3_attn586();
 980                 WAIT_4_SCB_CMD();
 981                 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
 982                 p->scb->cmd_cuc = CUC_START;
 983                 sun3_attn586();
 984                 WAIT_4_SCB_CMD();
 985                 netif_trans_update(dev); /* prevent tx timeout */
 986                 return 0;
 987         }
 988 #endif
 989         {
 990 #ifdef DEBUG
 991                 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
 992                 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
 993                 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
 994 #endif
 995                 sun3_82586_close(dev);
 996                 sun3_82586_open(dev);
 997         }
 998         netif_trans_update(dev); /* prevent tx timeout */
 999 }
1000
1001 /******************************************************
1002  * send frame
1003  */
1004
1005 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1006 {
1007         int len,i;
1008 #ifndef NO_NOPCOMMANDS
1009         int next_nop;
1010 #endif
1011         struct priv *p = netdev_priv(dev);
1012
1013         if(skb->len > XMIT_BUFF_SIZE)
1014         {
1015                 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1016                 return NETDEV_TX_OK;
1017         }
1018
1019         netif_stop_queue(dev);
1020
1021 #if(NUM_XMIT_BUFFS > 1)
1022         if(test_and_set_bit(0,(void *) &p->lock)) {
1023                 printk("%s: Queue was locked\n",dev->name);
1024                 return NETDEV_TX_BUSY;
1025         }
1026         else
1027 #endif
1028         {
1029                 len = skb->len;
1030                 if (len < ETH_ZLEN) {
1031                         memset((void *)p->xmit_cbuffs[p->xmit_count], 0,
1032                                ETH_ZLEN);
1033                         len = ETH_ZLEN;
1034                 }
1035                 skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len);
1036
1037 #if (NUM_XMIT_BUFFS == 1)
1038 #       ifdef NO_NOPCOMMANDS
1039
1040 #ifdef DEBUG
1041                 if(p->scb->cus & CU_ACTIVE)
1042                 {
1043                         printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1044                         printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1045                 }
1046 #endif
1047
1048                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1049                 for(i=0;i<16;i++)
1050                 {
1051                         p->xmit_cmds[0]->cmd_status = 0;
1052                         WAIT_4_SCB_CMD();
1053                         if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1054                                 p->scb->cmd_cuc = CUC_RESUME;
1055                         else
1056                         {
1057                                 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1058                                 p->scb->cmd_cuc = CUC_START;
1059                         }
1060
1061                         sun3_attn586();
1062                         if(!i)
1063                                 dev_kfree_skb(skb);
1064                         WAIT_4_SCB_CMD();
1065                         if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1066                                 break;
1067                         if(p->xmit_cmds[0]->cmd_status)
1068                                 break;
1069                         if(i==15)
1070                                 printk("%s: Can't start transmit-command.\n",dev->name);
1071                 }
1072 #       else
1073                 next_nop = (p->nop_point + 1) & 0x1;
1074                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1075
1076                 p->xmit_cmds[0]->cmd_link        = p->nop_cmds[next_nop]->cmd_link
1077                         = make16((p->nop_cmds[next_nop]));
1078                 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1079
1080                 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1081                 p->nop_point = next_nop;
1082                 dev_kfree_skb(skb);
1083 #       endif
1084 #else
1085                 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1086                 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1087                         next_nop = 0;
1088
1089                 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1090                 /* linkpointer of xmit-command already points to next nop cmd */
1091                 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1092                 p->nop_cmds[next_nop]->cmd_status = 0;
1093
1094                 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1095                 p->xmit_count = next_nop;
1096
1097                 {
1098                         unsigned long flags;
1099                         local_irq_save(flags);
1100                         if(p->xmit_count != p->xmit_last)
1101                                 netif_wake_queue(dev);
1102                         p->lock = 0;
1103                         local_irq_restore(flags);
1104                 }
1105                 dev_kfree_skb(skb);
1106 #endif
1107         }
1108         return NETDEV_TX_OK;
1109 }
1110
1111 /*******************************************
1112  * Someone wanna have the statistics
1113  */
1114
1115 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1116 {
1117         struct priv *p = netdev_priv(dev);
1118         unsigned short crc,aln,rsc,ovrn;
1119
1120         crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1121         p->scb->crc_errs = 0;
1122         aln = swab16(p->scb->aln_errs);
1123         p->scb->aln_errs = 0;
1124         rsc = swab16(p->scb->rsc_errs);
1125         p->scb->rsc_errs = 0;
1126         ovrn = swab16(p->scb->ovrn_errs);
1127         p->scb->ovrn_errs = 0;
1128
1129         dev->stats.rx_crc_errors += crc;
1130         dev->stats.rx_fifo_errors += ovrn;
1131         dev->stats.rx_frame_errors += aln;
1132         dev->stats.rx_dropped += rsc;
1133
1134         return &dev->stats;
1135 }
1136
1137 /********************************************************
1138  * Set MC list ..
1139  */
1140
1141 static void set_multicast_list(struct net_device *dev)
1142 {
1143         netif_stop_queue(dev);
1144         sun3_disint();
1145         alloc586(dev);
1146         init586(dev);
1147         startrecv586(dev);
1148         sun3_enaint();
1149         netif_wake_queue(dev);
1150 }
1151
1152 #if 0
1153 /*
1154  * DUMP .. we expect a not running CMD unit and enough space
1155  */
1156 void sun3_82586_dump(struct net_device *dev,void *ptr)
1157 {
1158         struct priv *p = netdev_priv(dev);
1159         struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1160         int i;
1161
1162         p->scb->cmd_cuc = CUC_ABORT;
1163         sun3_attn586();
1164         WAIT_4_SCB_CMD();
1165         WAIT_4_SCB_CMD_RUC();
1166
1167         dump_cmd->cmd_status = 0;
1168         dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1169         dump_cmd->dump_offset = make16((dump_cmd + 1));
1170         dump_cmd->cmd_link = 0xffff;
1171
1172         p->scb->cbl_offset = make16(dump_cmd);
1173         p->scb->cmd_cuc = CUC_START;
1174         sun3_attn586();
1175         WAIT_4_STAT_COMPL(dump_cmd);
1176
1177         if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1178                                 printk("%s: Can't get dump information.\n",dev->name);
1179
1180         for(i=0;i<170;i++) {
1181                 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1182                 if(i % 24 == 23)
1183                         printk("\n");
1184         }
1185         printk("\n");
1186 }
1187 #endif