kernel/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         .ndo_change_mtu         = eth_change_mtu,
 341 };
 342
 343 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
 344 {
 345         int i, size, retval;
 346
 347         if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
 348                 return -EBUSY;
 349
 350         /* copy in the ethernet address from the prom */
 351         for(i = 0; i < 6 ; i++)
 352              dev->dev_addr[i] = idprom->id_ethaddr[i];
 353
 354         printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
 355
 356         /*
 357          * check (or search) IO-Memory, 32K
 358          */
 359         size = 0x8000;
 360
 361         dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
 362         dev->mem_end = dev->mem_start + size;
 363
 364         if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
 365                 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
 366                 retval = -ENODEV;
 367                 goto out;
 368         }
 369         if(!check586(dev,(char *) dev->mem_start,size)) {
 370                 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
 371                 retval = -ENODEV;
 372                 goto out;
 373         }
 374
 375         ((struct priv *)netdev_priv(dev))->memtop =
 376                                         (char *)dvma_btov(dev->mem_start);
 377         ((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0);
 378         alloc586(dev);
 379
 380         /* set number of receive-buffs according to memsize */
 381         if(size == 0x2000)
 382                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 383                                                         NUM_RECV_BUFFS_8;
 384         else if(size == 0x4000)
 385                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 386                                                         NUM_RECV_BUFFS_16;
 387         else
 388                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 389                                                         NUM_RECV_BUFFS_32;
 390
 391         printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
 392
 393         dev->netdev_ops         = &sun3_82586_netdev_ops;
 394         dev->watchdog_timeo     = HZ/20;
 395
 396         dev->if_port            = 0;
 397         return 0;
 398 out:
 399         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 400         return retval;
 401 }
 402
 403
 404 static int init586(struct net_device *dev)
 405 {
 406         void *ptr;
 407         int i,result=0;
 408         struct priv *p = netdev_priv(dev);
 409         volatile struct configure_cmd_struct    *cfg_cmd;
 410         volatile struct iasetup_cmd_struct *ias_cmd;
 411         volatile struct tdr_cmd_struct *tdr_cmd;
 412         volatile struct mcsetup_cmd_struct *mc_cmd;
 413         struct netdev_hw_addr *ha;
 414         int num_addrs=netdev_mc_count(dev);
 415
 416         ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
 417
 418         cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
 419         cfg_cmd->cmd_status     = 0;
 420         cfg_cmd->cmd_cmd        = swab16(CMD_CONFIGURE | CMD_LAST);
 421         cfg_cmd->cmd_link       = 0xffff;
 422
 423         cfg_cmd->byte_cnt       = 0x0a; /* number of cfg bytes */
 424         cfg_cmd->fifo           = fifo; /* fifo-limit (8=tx:32/rx:64) */
 425         cfg_cmd->sav_bf         = 0x40; /* hold or discard bad recv frames (bit 7) */
 426         cfg_cmd->adr_len        = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
 427         cfg_cmd->priority       = 0x00;
 428         cfg_cmd->ifs            = 0x60;
 429         cfg_cmd->time_low       = 0x00;
 430         cfg_cmd->time_high      = 0xf2;
 431         cfg_cmd->promisc        = 0;
 432         if(dev->flags & IFF_ALLMULTI) {
 433                 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
 434                 if(num_addrs > len)     {
 435                         printk("%s: switching to promisc. mode\n",dev->name);
 436                         cfg_cmd->promisc = 1;
 437                 }
 438         }
 439         if(dev->flags&IFF_PROMISC)
 440                 cfg_cmd->promisc = 1;
 441         cfg_cmd->carr_coll      = 0x00;
 442
 443         p->scb->cbl_offset      = make16(cfg_cmd);
 444         p->scb->cmd_ruc         = 0;
 445
 446         p->scb->cmd_cuc         = CUC_START; /* cmd.-unit start */
 447         sun3_attn586();
 448
 449         WAIT_4_STAT_COMPL(cfg_cmd);
 450
 451         if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
 452         {
 453                 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
 454                 return 1;
 455         }
 456
 457         /*
 458          * individual address setup
 459          */
 460
 461         ias_cmd = (struct iasetup_cmd_struct *)ptr;
 462
 463         ias_cmd->cmd_status     = 0;
 464         ias_cmd->cmd_cmd        = swab16(CMD_IASETUP | CMD_LAST);
 465         ias_cmd->cmd_link       = 0xffff;
 466
 467         memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
 468
 469         p->scb->cbl_offset = make16(ias_cmd);
 470
 471         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 472         sun3_attn586();
 473
 474         WAIT_4_STAT_COMPL(ias_cmd);
 475
 476         if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
 477                 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
 478                 return 1;
 479         }
 480
 481         /*
 482          * TDR, wire check .. e.g. no resistor e.t.c
 483          */
 484
 485         tdr_cmd = (struct tdr_cmd_struct *)ptr;
 486
 487         tdr_cmd->cmd_status     = 0;
 488         tdr_cmd->cmd_cmd        = swab16(CMD_TDR | CMD_LAST);
 489         tdr_cmd->cmd_link       = 0xffff;
 490         tdr_cmd->status         = 0;
 491
 492         p->scb->cbl_offset = make16(tdr_cmd);
 493         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 494         sun3_attn586();
 495
 496         WAIT_4_STAT_COMPL(tdr_cmd);
 497
 498         if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
 499         {
 500                 printk("%s: Problems while running the TDR.\n",dev->name);
 501         }
 502         else
 503         {
 504                 DELAY_16(); /* wait for result */
 505                 result = swab16(tdr_cmd->status);
 506
 507                 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 508                 sun3_attn586(); /* ack the interrupts */
 509
 510                 if(result & TDR_LNK_OK)
 511                         ;
 512                 else if(result & TDR_XCVR_PRB)
 513                         printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
 514                 else if(result & TDR_ET_OPN)
 515                         printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 516                 else if(result & TDR_ET_SRT)
 517                 {
 518                         if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
 519                                 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 520                 }
 521                 else
 522                         printk("%s: TDR: Unknown status %04x\n",dev->name,result);
 523         }
 524
 525         /*
 526          * Multicast setup
 527          */
 528         if(num_addrs && !(dev->flags & IFF_PROMISC) )
 529         {
 530                 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
 531                 mc_cmd->cmd_status = 0;
 532                 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
 533                 mc_cmd->cmd_link = 0xffff;
 534                 mc_cmd->mc_cnt = swab16(num_addrs * 6);
 535
 536                 i = 0;
 537                 netdev_for_each_mc_addr(ha, dev)
 538                         memcpy((char *) mc_cmd->mc_list[i++],
 539                                ha->addr, ETH_ALEN);
 540
 541                 p->scb->cbl_offset = make16(mc_cmd);
 542                 p->scb->cmd_cuc = CUC_START;
 543                 sun3_attn586();
 544
 545                 WAIT_4_STAT_COMPL(mc_cmd);
 546
 547                 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
 548                         printk("%s: Can't apply multicast-address-list.\n",dev->name);
 549         }
 550
 551         /*
 552          * alloc nop/xmit-cmds
 553          */
 554 #if (NUM_XMIT_BUFFS == 1)
 555         for(i=0;i<2;i++)
 556         {
 557                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 558                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 559                 p->nop_cmds[i]->cmd_status      = 0;
 560                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 561                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 562         }
 563 #else
 564         for(i=0;i<NUM_XMIT_BUFFS;i++)
 565         {
 566                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 567                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 568                 p->nop_cmds[i]->cmd_status      = 0;
 569                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 570                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 571         }
 572 #endif
 573
 574         ptr = alloc_rfa(dev,ptr); /* init receive-frame-area */
 575
 576         /*
 577          * alloc xmit-buffs / init xmit_cmds
 578          */
 579         for(i=0;i<NUM_XMIT_BUFFS;i++)
 580         {
 581                 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
 582                 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
 583                 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
 584                 ptr = (char *) ptr + XMIT_BUFF_SIZE;
 585                 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
 586                 ptr = (char *) ptr + sizeof(struct tbd_struct);
 587                 if(ptr > (void *)dev->mem_end)
 588                 {
 589                         printk("%s: not enough shared-mem for your configuration!\n",dev->name);
 590                         return 1;
 591                 }
 592                 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
 593                 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
 594                 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
 595                 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
 596                 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
 597                 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
 598                 p->xmit_buffs[i]->next = 0xffff;
 599                 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
 600         }
 601
 602         p->xmit_count = 0;
 603         p->xmit_last    = 0;
 604 #ifndef NO_NOPCOMMANDS
 605         p->nop_point    = 0;
 606 #endif
 607
 608          /*
 609                 * 'start transmitter'
 610                 */
 611 #ifndef NO_NOPCOMMANDS
 612         p->scb->cbl_offset = make16(p->nop_cmds[0]);
 613         p->scb->cmd_cuc = CUC_START;
 614         sun3_attn586();
 615         WAIT_4_SCB_CMD();
 616 #else
 617         p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
 618         p->xmit_cmds[0]->cmd_cmd        = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
 619 #endif
 620
 621         /*
 622          * ack. interrupts
 623          */
 624         p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 625         sun3_attn586();
 626         DELAY_16();
 627
 628         sun3_enaint();
 629         sun3_active();
 630
 631         return 0;
 632 }
 633
 634 /******************************************************
 635  * This is a helper routine for sun3_82586_rnr_int() and init586().
 636  * It sets up the Receive Frame Area (RFA).
 637  */
 638
 639 static void *alloc_rfa(struct net_device *dev,void *ptr)
 640 {
 641         volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
 642         volatile struct rbd_struct *rbd;
 643         int i;
 644         struct priv *p = netdev_priv(dev);
 645
 646         memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
 647         p->rfd_first = rfd;
 648
 649         for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
 650                 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
 651                 rfd[i].rbd_offset = 0xffff;
 652         }
 653         rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;         /* RU suspend */
 654
 655         ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
 656
 657         rbd = (struct rbd_struct *) ptr;
 658         ptr = (void *) (rbd + p->num_recv_buffs);
 659
 660          /* clr descriptors */
 661         memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
 662
 663         for(i=0;i<p->num_recv_buffs;i++)
 664         {
 665                 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
 666                 rbd[i].size = swab16(RECV_BUFF_SIZE);
 667                 rbd[i].buffer = make24(ptr);
 668                 ptr = (char *) ptr + RECV_BUFF_SIZE;
 669         }
 670
 671         p->rfd_top      = p->rfd_first;
 672         p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
 673
 674         p->scb->rfa_offset              = make16(p->rfd_first);
 675         p->rfd_first->rbd_offset        = make16(rbd);
 676
 677         return ptr;
 678 }
 679
 680
 681 /**************************************************
 682  * Interrupt Handler ...
 683  */
 684
 685 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
 686 {
 687         struct net_device *dev = dev_id;
 688         unsigned short stat;
 689         int cnt=0;
 690         struct priv *p;
 691
 692         if (!dev) {
 693                 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
 694                 return IRQ_NONE;
 695         }
 696         p = netdev_priv(dev);
 697
 698         if(debuglevel > 1)
 699                 printk("I");
 700
 701         WAIT_4_SCB_CMD(); /* wait for last command      */
 702
 703         while((stat=p->scb->cus & STAT_MASK))
 704         {
 705                 p->scb->cmd_cuc = stat;
 706                 sun3_attn586();
 707
 708                 if(stat & STAT_FR)       /* received a frame */
 709                         sun3_82586_rcv_int(dev);
 710
 711                 if(stat & STAT_RNR) /* RU went 'not ready' */
 712                 {
 713                         printk("(R)");
 714                         if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
 715                         {
 716                                 WAIT_4_SCB_CMD();
 717                                 p->scb->cmd_ruc = RUC_RESUME;
 718                                 sun3_attn586();
 719                                 WAIT_4_SCB_CMD_RUC();
 720                         }
 721                         else
 722                         {
 723                                 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
 724                                 sun3_82586_rnr_int(dev);
 725                         }
 726                 }
 727
 728                 if(stat & STAT_CX)              /* command with I-bit set complete */
 729                          sun3_82586_xmt_int(dev);
 730
 731 #ifndef NO_NOPCOMMANDS
 732                 if(stat & STAT_CNA)     /* CU went 'not ready' */
 733                 {
 734                         if(netif_running(dev))
 735                                 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
 736                 }
 737 #endif
 738
 739                 if(debuglevel > 1)
 740                         printk("%d",cnt++);
 741
 742                 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
 743                 if(p->scb->cmd_cuc)      /* timed out? */
 744                 {
 745                         printk("%s: Acknowledge timed out.\n",dev->name);
 746                         sun3_disint();
 747                         break;
 748                 }
 749         }
 750
 751         if(debuglevel > 1)
 752                 printk("i");
 753         return IRQ_HANDLED;
 754 }
 755
 756 /*******************************************************
 757  * receive-interrupt
 758  */
 759
 760 static void sun3_82586_rcv_int(struct net_device *dev)
 761 {
 762         int status,cnt=0;
 763         unsigned short totlen;
 764         struct sk_buff *skb;
 765         struct rbd_struct *rbd;
 766         struct priv *p = netdev_priv(dev);
 767
 768         if(debuglevel > 0)
 769                 printk("R");
 770
 771         for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
 772         {
 773                         rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
 774
 775                         if(status & RFD_OK) /* frame received without error? */
 776                         {
 777                                 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
 778                                 {
 779                                         totlen &= RBD_MASK; /* length of this frame */
 780                                         rbd->status = 0;
 781                                         skb = netdev_alloc_skb(dev, totlen + 2);
 782                                         if(skb != NULL)
 783                                         {
 784                                                 skb_reserve(skb,2);
 785                                                 skb_put(skb,totlen);
 786                                                 skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen);
 787                                                 skb->protocol=eth_type_trans(skb,dev);
 788                                                 netif_rx(skb);
 789                                                 dev->stats.rx_packets++;
 790                                         }
 791                                         else
 792                                                 dev->stats.rx_dropped++;
 793                                 }
 794                                 else
 795                                 {
 796                                         int rstat;
 797                                                  /* free all RBD's until RBD_LAST is set */
 798                                         totlen = 0;
 799                                         while(!((rstat=swab16(rbd->status)) & RBD_LAST))
 800                                         {
 801                                                 totlen += rstat & RBD_MASK;
 802                                                 if(!rstat)
 803                                                 {
 804                                                         printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
 805                                                         break;
 806                                                 }
 807                                                 rbd->status = 0;
 808                                                 rbd = (struct rbd_struct *) make32(rbd->next);
 809                                         }
 810                                         totlen += rstat & RBD_MASK;
 811                                         rbd->status = 0;
 812                                         printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
 813                                         dev->stats.rx_dropped++;
 814                          }
 815                 }
 816                 else /* frame !(ok), only with 'save-bad-frames' */
 817                 {
 818                         printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
 819                         dev->stats.rx_errors++;
 820                 }
 821                 p->rfd_top->stat_high = 0;
 822                 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
 823                 p->rfd_top->rbd_offset = 0xffff;
 824                 p->rfd_last->last = 0;                          /* delete RFD_SUSP      */
 825                 p->rfd_last = p->rfd_top;
 826                 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
 827                 p->scb->rfa_offset = make16(p->rfd_top);
 828
 829                 if(debuglevel > 0)
 830                         printk("%d",cnt++);
 831         }
 832
 833         if(automatic_resume)
 834         {
 835                 WAIT_4_SCB_CMD();
 836                 p->scb->cmd_ruc = RUC_RESUME;
 837                 sun3_attn586();
 838                 WAIT_4_SCB_CMD_RUC();
 839         }
 840
 841 #ifdef WAIT_4_BUSY
 842         {
 843                 int i;
 844                 for(i=0;i<1024;i++)
 845                 {
 846                         if(p->rfd_top->status)
 847                                 break;
 848                         DELAY_16();
 849                         if(i == 1023)
 850                                 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
 851                 }
 852         }
 853 #endif
 854
 855 #if 0
 856         if(!at_least_one)
 857         {
 858                 int i;
 859                 volatile struct rfd_struct *rfds=p->rfd_top;
 860                 volatile struct rbd_struct *rbds;
 861                 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
 862                 for(i=0;i< (p->num_recv_buffs+4);i++)
 863                 {
 864                         rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
 865                         printk("%04x:%04x ",rfds->status,rbds->status);
 866                         rfds = (struct rfd_struct *) make32(rfds->next);
 867                 }
 868                 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
 869                 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);
 870         }
 871         old_at_least = at_least_one;
 872 #endif
 873
 874         if(debuglevel > 0)
 875                 printk("r");
 876 }
 877
 878 /**********************************************************
 879  * handle 'Receiver went not ready'.
 880  */
 881
 882 static void sun3_82586_rnr_int(struct net_device *dev)
 883 {
 884         struct priv *p = netdev_priv(dev);
 885
 886         dev->stats.rx_errors++;
 887
 888         WAIT_4_SCB_CMD();               /* wait for the last cmd, WAIT_4_FULLSTAT?? */
 889         p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
 890         sun3_attn586();
 891         WAIT_4_SCB_CMD_RUC();           /* wait for accept cmd. */
 892
 893         alloc_rfa(dev,(char *)p->rfd_first);
 894 /* maybe add a check here, before restarting the RU */
 895         startrecv586(dev); /* restart RU */
 896
 897         printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
 898
 899 }
 900
 901 /**********************************************************
 902  * handle xmit - interrupt
 903  */
 904
 905 static void sun3_82586_xmt_int(struct net_device *dev)
 906 {
 907         int status;
 908         struct priv *p = netdev_priv(dev);
 909
 910         if(debuglevel > 0)
 911                 printk("X");
 912
 913         status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
 914         if(!(status & STAT_COMPL))
 915                 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
 916
 917         if(status & STAT_OK)
 918         {
 919                 dev->stats.tx_packets++;
 920                 dev->stats.collisions += (status & TCMD_MAXCOLLMASK);
 921         }
 922         else
 923         {
 924                 dev->stats.tx_errors++;
 925                 if(status & TCMD_LATECOLL) {
 926                         printk("%s: late collision detected.\n",dev->name);
 927                         dev->stats.collisions++;
 928                 }
 929                 else if(status & TCMD_NOCARRIER) {
 930                         dev->stats.tx_carrier_errors++;
 931                         printk("%s: no carrier detected.\n",dev->name);
 932                 }
 933                 else if(status & TCMD_LOSTCTS)
 934                         printk("%s: loss of CTS detected.\n",dev->name);
 935                 else if(status & TCMD_UNDERRUN) {
 936                         dev->stats.tx_fifo_errors++;
 937                         printk("%s: DMA underrun detected.\n",dev->name);
 938                 }
 939                 else if(status & TCMD_MAXCOLL) {
 940                         printk("%s: Max. collisions exceeded.\n",dev->name);
 941                         dev->stats.collisions += 16;
 942                 }
 943         }
 944
 945 #if (NUM_XMIT_BUFFS > 1)
 946         if( (++p->xmit_last) == NUM_XMIT_BUFFS)
 947                 p->xmit_last = 0;
 948 #endif
 949         netif_wake_queue(dev);
 950 }
 951
 952 /***********************************************************
 953  * (re)start the receiver
 954  */
 955
 956 static void startrecv586(struct net_device *dev)
 957 {
 958         struct priv *p = netdev_priv(dev);
 959
 960         WAIT_4_SCB_CMD();
 961         WAIT_4_SCB_CMD_RUC();
 962         p->scb->rfa_offset = make16(p->rfd_first);
 963         p->scb->cmd_ruc = RUC_START;
 964         sun3_attn586();         /* start cmd. */
 965         WAIT_4_SCB_CMD_RUC();   /* wait for accept cmd. (no timeout!!) */
 966 }
 967
 968 static void sun3_82586_timeout(struct net_device *dev)
 969 {
 970         struct priv *p = netdev_priv(dev);
 971 #ifndef NO_NOPCOMMANDS
 972         if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
 973         {
 974                 netif_wake_queue(dev);
 975 #ifdef DEBUG
 976                 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
 977                 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);
 978 #endif
 979                 p->scb->cmd_cuc = CUC_ABORT;
 980                 sun3_attn586();
 981                 WAIT_4_SCB_CMD();
 982                 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
 983                 p->scb->cmd_cuc = CUC_START;
 984                 sun3_attn586();
 985                 WAIT_4_SCB_CMD();
 986                 dev->trans_start = jiffies; /* prevent tx timeout */
 987                 return 0;
 988         }
 989 #endif
 990         {
 991 #ifdef DEBUG
 992                 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
 993                 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
 994                 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
 995 #endif
 996                 sun3_82586_close(dev);
 997                 sun3_82586_open(dev);
 998         }
 999         dev->trans_start = jiffies; /* prevent tx timeout */
1000 }
1001
1002 /******************************************************
1003  * send frame
1004  */
1005
1006 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1007 {
1008         int len,i;
1009 #ifndef NO_NOPCOMMANDS
1010         int next_nop;
1011 #endif
1012         struct priv *p = netdev_priv(dev);
1013
1014         if(skb->len > XMIT_BUFF_SIZE)
1015         {
1016                 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1017                 return NETDEV_TX_OK;
1018         }
1019
1020         netif_stop_queue(dev);
1021
1022 #if(NUM_XMIT_BUFFS > 1)
1023         if(test_and_set_bit(0,(void *) &p->lock)) {
1024                 printk("%s: Queue was locked\n",dev->name);
1025                 return NETDEV_TX_BUSY;
1026         }
1027         else
1028 #endif
1029         {
1030                 len = skb->len;
1031                 if (len < ETH_ZLEN) {
1032                         memset((void *)p->xmit_cbuffs[p->xmit_count], 0,
1033                                ETH_ZLEN);
1034                         len = ETH_ZLEN;
1035                 }
1036                 skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len);
1037
1038 #if (NUM_XMIT_BUFFS == 1)
1039 #       ifdef NO_NOPCOMMANDS
1040
1041 #ifdef DEBUG
1042                 if(p->scb->cus & CU_ACTIVE)
1043                 {
1044                         printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1045                         printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1046                 }
1047 #endif
1048
1049                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1050                 for(i=0;i<16;i++)
1051                 {
1052                         p->xmit_cmds[0]->cmd_status = 0;
1053                         WAIT_4_SCB_CMD();
1054                         if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1055                                 p->scb->cmd_cuc = CUC_RESUME;
1056                         else
1057                         {
1058                                 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1059                                 p->scb->cmd_cuc = CUC_START;
1060                         }
1061
1062                         sun3_attn586();
1063                         if(!i)
1064                                 dev_kfree_skb(skb);
1065                         WAIT_4_SCB_CMD();
1066                         if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1067                                 break;
1068                         if(p->xmit_cmds[0]->cmd_status)
1069                                 break;
1070                         if(i==15)
1071                                 printk("%s: Can't start transmit-command.\n",dev->name);
1072                 }
1073 #       else
1074                 next_nop = (p->nop_point + 1) & 0x1;
1075                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1076
1077                 p->xmit_cmds[0]->cmd_link        = p->nop_cmds[next_nop]->cmd_link
1078                         = make16((p->nop_cmds[next_nop]));
1079                 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1080
1081                 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1082                 p->nop_point = next_nop;
1083                 dev_kfree_skb(skb);
1084 #       endif
1085 #else
1086                 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1087                 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1088                         next_nop = 0;
1089
1090                 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1091                 /* linkpointer of xmit-command already points to next nop cmd */
1092                 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1093                 p->nop_cmds[next_nop]->cmd_status = 0;
1094
1095                 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1096                 p->xmit_count = next_nop;
1097
1098                 {
1099                         unsigned long flags;
1100                         local_irq_save(flags);
1101                         if(p->xmit_count != p->xmit_last)
1102                                 netif_wake_queue(dev);
1103                         p->lock = 0;
1104                         local_irq_restore(flags);
1105                 }
1106                 dev_kfree_skb(skb);
1107 #endif
1108         }
1109         return NETDEV_TX_OK;
1110 }
1111
1112 /*******************************************
1113  * Someone wanna have the statistics
1114  */
1115
1116 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1117 {
1118         struct priv *p = netdev_priv(dev);
1119         unsigned short crc,aln,rsc,ovrn;
1120
1121         crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1122         p->scb->crc_errs = 0;
1123         aln = swab16(p->scb->aln_errs);
1124         p->scb->aln_errs = 0;
1125         rsc = swab16(p->scb->rsc_errs);
1126         p->scb->rsc_errs = 0;
1127         ovrn = swab16(p->scb->ovrn_errs);
1128         p->scb->ovrn_errs = 0;
1129
1130         dev->stats.rx_crc_errors += crc;
1131         dev->stats.rx_fifo_errors += ovrn;
1132         dev->stats.rx_frame_errors += aln;
1133         dev->stats.rx_dropped += rsc;
1134
1135         return &dev->stats;
1136 }
1137
1138 /********************************************************
1139  * Set MC list ..
1140  */
1141
1142 static void set_multicast_list(struct net_device *dev)
1143 {
1144         netif_stop_queue(dev);
1145         sun3_disint();
1146         alloc586(dev);
1147         init586(dev);
1148         startrecv586(dev);
1149         sun3_enaint();
1150         netif_wake_queue(dev);
1151 }
1152
1153 #if 0
1154 /*
1155  * DUMP .. we expect a not running CMD unit and enough space
1156  */
1157 void sun3_82586_dump(struct net_device *dev,void *ptr)
1158 {
1159         struct priv *p = netdev_priv(dev);
1160         struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1161         int i;
1162
1163         p->scb->cmd_cuc = CUC_ABORT;
1164         sun3_attn586();
1165         WAIT_4_SCB_CMD();
1166         WAIT_4_SCB_CMD_RUC();
1167
1168         dump_cmd->cmd_status = 0;
1169         dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1170         dump_cmd->dump_offset = make16((dump_cmd + 1));
1171         dump_cmd->cmd_link = 0xffff;
1172
1173         p->scb->cbl_offset = make16(dump_cmd);
1174         p->scb->cmd_cuc = CUC_START;
1175         sun3_attn586();
1176         WAIT_4_STAT_COMPL(dump_cmd);
1177
1178         if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1179                                 printk("%s: Can't get dump information.\n",dev->name);
1180
1181         for(i=0;i<170;i++) {
1182                 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1183                 if(i % 24 == 23)
1184                         printk("\n");
1185         }
1186         printk("\n");
1187 }
1188 #endif