git.oblomov.eu Git - linux-2.6/blob - drivers/net/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/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/string.h>
  34 #include <linux/errno.h>
  35 #include <linux/ioport.h>
  36 #include <linux/slab.h>
  37 #include <linux/interrupt.h>
  38 #include <linux/delay.h>
  39 #include <linux/init.h>
  40 #include <linux/bitops.h>
  41 #include <asm/io.h>
  42 #include <asm/idprom.h>
  43 #include <asm/machines.h>
  44 #include <asm/sun3mmu.h>
  45 #include <asm/dvma.h>
  46 #include <asm/byteorder.h>
  47
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include <linux/skbuff.h>
  51
  52 #include "sun3_82586.h"
  53
  54 #define DRV_NAME "sun3_82586"
  55
  56 #define DEBUG       /* debug on */
  57 #define SYSBUSVAL 0 /* 16 Bit */
  58 #define SUN3_82586_TOTAL_SIZE   PAGE_SIZE
  59
  60 #define sun3_attn586()  {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
  61 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
  62 #define sun3_disint()   {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
  63 #define sun3_enaint()   {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
  64 #define sun3_active()   {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
  65
  66 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
  67 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
  68 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
  69
  70 /******************* how to calculate the buffers *****************************
  71
  72   * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
  73   * --------------- in a different (more stable?) mode. Only in this mode it's
  74   *                 possible to configure the driver with 'NO_NOPCOMMANDS'
  75
  76 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
  77 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
  78 sizeof(rfd) = 24; sizeof(rbd) = 12;
  79 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
  80 sizeof(nop_cmd) = 8;
  81
  82   * if you don't know the driver, better do not change these values: */
  83
  84 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
  85 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
  86 #define NUM_XMIT_BUFFS 1    /* config for 32K shmem */
  87 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
  88 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
  89 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
  90 #define NO_NOPCOMMANDS      /* only possible with NUM_XMIT_BUFFS=1 */
  91
  92 /**************************************************************************/
  93
  94 /* different DELAYs */
  95 #define DELAY(x) mdelay(32 * x);
  96 #define DELAY_16(); { udelay(16); }
  97 #define DELAY_18(); { udelay(4); }
  98
  99 /* wait for command with timeout: */
 100 #define WAIT_4_SCB_CMD() \
 101 { int i; \
 102   for(i=0;i<16384;i++) { \
 103     if(!p->scb->cmd_cuc) break; \
 104     DELAY_18(); \
 105     if(i == 16383) { \
 106       printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
 107        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 108
 109 #define WAIT_4_SCB_CMD_RUC() { int i; \
 110   for(i=0;i<16384;i++) { \
 111     if(!p->scb->cmd_ruc) break; \
 112     DELAY_18(); \
 113     if(i == 16383) { \
 114       printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
 115        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 116
 117 #define WAIT_4_STAT_COMPL(addr) { int i; \
 118    for(i=0;i<32767;i++) { \
 119      if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
 120      DELAY_16(); DELAY_16(); } }
 121
 122 static int     sun3_82586_probe1(struct net_device *dev,int ioaddr);
 123 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id);
 124 static int     sun3_82586_open(struct net_device *dev);
 125 static int     sun3_82586_close(struct net_device *dev);
 126 static int     sun3_82586_send_packet(struct sk_buff *,struct net_device *);
 127 static struct  net_device_stats *sun3_82586_get_stats(struct net_device *dev);
 128 static void    set_multicast_list(struct net_device *dev);
 129 static void    sun3_82586_timeout(struct net_device *dev);
 130 #if 0
 131 static void    sun3_82586_dump(struct net_device *,void *);
 132 #endif
 133
 134 /* helper-functions */
 135 static int     init586(struct net_device *dev);
 136 static int     check586(struct net_device *dev,char *where,unsigned size);
 137 static void    alloc586(struct net_device *dev);
 138 static void    startrecv586(struct net_device *dev);
 139 static void   *alloc_rfa(struct net_device *dev,void *ptr);
 140 static void    sun3_82586_rcv_int(struct net_device *dev);
 141 static void    sun3_82586_xmt_int(struct net_device *dev);
 142 static void    sun3_82586_rnr_int(struct net_device *dev);
 143
 144 struct priv
 145 {
 146         struct net_device_stats stats;
 147         unsigned long base;
 148         char *memtop;
 149         long int lock;
 150         int reseted;
 151         volatile struct rfd_struct      *rfd_last,*rfd_top,*rfd_first;
 152         volatile struct scp_struct      *scp;   /* volatile is important */
 153         volatile struct iscp_struct     *iscp;  /* volatile is important */
 154         volatile struct scb_struct      *scb;   /* volatile is important */
 155         volatile struct tbd_struct      *xmit_buffs[NUM_XMIT_BUFFS];
 156         volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
 157 #if (NUM_XMIT_BUFFS == 1)
 158         volatile struct nop_cmd_struct *nop_cmds[2];
 159 #else
 160         volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
 161 #endif
 162         volatile int            nop_point,num_recv_buffs;
 163         volatile char           *xmit_cbuffs[NUM_XMIT_BUFFS];
 164         volatile int            xmit_count,xmit_last;
 165 };
 166
 167 /**********************************************
 168  * close device
 169  */
 170 static int sun3_82586_close(struct net_device *dev)
 171 {
 172         free_irq(dev->irq, dev);
 173
 174         sun3_reset586(); /* the hard way to stop the receiver */
 175
 176         netif_stop_queue(dev);
 177
 178         return 0;
 179 }
 180
 181 /**********************************************
 182  * open device
 183  */
 184 static int sun3_82586_open(struct net_device *dev)
 185 {
 186         int ret;
 187
 188         sun3_disint();
 189         alloc586(dev);
 190         init586(dev);
 191         startrecv586(dev);
 192         sun3_enaint();
 193
 194         ret = request_irq(dev->irq, &sun3_82586_interrupt,0,dev->name,dev);
 195         if (ret)
 196         {
 197                 sun3_reset586();
 198                 return ret;
 199         }
 200
 201         netif_start_queue(dev);
 202
 203         return 0; /* most done by init */
 204 }
 205
 206 /**********************************************
 207  * Check to see if there's an 82586 out there.
 208  */
 209 static int check586(struct net_device *dev,char *where,unsigned size)
 210 {
 211         struct priv pb;
 212         struct priv *p = /* (struct priv *) dev->priv*/ &pb;
 213         char *iscp_addr;
 214         int i;
 215
 216         p->base = (unsigned long) dvma_btov(0);
 217         p->memtop = (char *)dvma_btov((unsigned long)where);
 218         p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
 219         memset((char *)p->scp,0, sizeof(struct scp_struct));
 220         for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
 221                 if(((char *)p->scp)[i])
 222                         return 0;
 223         p->scp->sysbus = SYSBUSVAL;                             /* 1 = 8Bit-Bus, 0 = 16 Bit */
 224         if(p->scp->sysbus != SYSBUSVAL)
 225                 return 0;
 226
 227         iscp_addr = (char *)dvma_btov((unsigned long)where);
 228
 229         p->iscp = (struct iscp_struct *) iscp_addr;
 230         memset((char *)p->iscp,0, sizeof(struct iscp_struct));
 231
 232         p->scp->iscp = make24(p->iscp);
 233         p->iscp->busy = 1;
 234
 235         sun3_reset586();
 236         sun3_attn586();
 237         DELAY(1);       /* wait a while... */
 238
 239         if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
 240                 return 0;
 241
 242         return 1;
 243 }
 244
 245 /******************************************************************
 246  * set iscp at the right place, called by sun3_82586_probe1 and open586.
 247  */
 248 static void alloc586(struct net_device *dev)
 249 {
 250         struct priv *p =        (struct priv *) dev->priv;
 251
 252         sun3_reset586();
 253         DELAY(1);
 254
 255         p->scp  = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
 256         p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start);
 257         p->scb  = (struct scb_struct *)  ((char *)p->iscp + sizeof(struct iscp_struct));
 258
 259         memset((char *) p->iscp,0,sizeof(struct iscp_struct));
 260         memset((char *) p->scp ,0,sizeof(struct scp_struct));
 261
 262         p->scp->iscp = make24(p->iscp);
 263         p->scp->sysbus = SYSBUSVAL;
 264         p->iscp->scb_offset = make16(p->scb);
 265         p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
 266
 267         p->iscp->busy = 1;
 268         sun3_reset586();
 269         sun3_attn586();
 270
 271         DELAY(1);
 272
 273         if(p->iscp->busy)
 274                 printk("%s: Init-Problems (alloc).\n",dev->name);
 275
 276         p->reseted = 0;
 277
 278         memset((char *)p->scb,0,sizeof(struct scb_struct));
 279 }
 280
 281 struct net_device * __init sun3_82586_probe(int unit)
 282 {
 283         struct net_device *dev;
 284         unsigned long ioaddr;
 285         static int found = 0;
 286         int err = -ENOMEM;
 287
 288         /* check that this machine has an onboard 82586 */
 289         switch(idprom->id_machtype) {
 290         case SM_SUN3|SM_3_160:
 291         case SM_SUN3|SM_3_260:
 292                 /* these machines have 82586 */
 293                 break;
 294
 295         default:
 296                 return ERR_PTR(-ENODEV);
 297         }
 298
 299         if (found)
 300                 return ERR_PTR(-ENODEV);
 301
 302         ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
 303         if (!ioaddr)
 304                 return ERR_PTR(-ENOMEM);
 305         found = 1;
 306
 307         dev = alloc_etherdev(sizeof(struct priv));
 308         if (!dev)
 309                 goto out;
 310         if (unit >= 0) {
 311                 sprintf(dev->name, "eth%d", unit);
 312                 netdev_boot_setup_check(dev);
 313         }
 314         SET_MODULE_OWNER(dev);
 315
 316         dev->irq = IE_IRQ;
 317         dev->base_addr = ioaddr;
 318         err = sun3_82586_probe1(dev, ioaddr);
 319         if (err)
 320                 goto out1;
 321         err = register_netdev(dev);
 322         if (err)
 323                 goto out2;
 324         return dev;
 325
 326 out2:
 327         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 328 out1:
 329         free_netdev(dev);
 330 out:
 331         iounmap((void __iomem *)ioaddr);
 332         return ERR_PTR(err);
 333 }
 334
 335 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
 336 {
 337         int i, size, retval;
 338
 339         if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
 340                 return -EBUSY;
 341
 342         /* copy in the ethernet address from the prom */
 343         for(i = 0; i < 6 ; i++)
 344              dev->dev_addr[i] = idprom->id_ethaddr[i];
 345
 346         printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
 347
 348         /*
 349          * check (or search) IO-Memory, 32K
 350          */
 351         size = 0x8000;
 352
 353         dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
 354         dev->mem_end = dev->mem_start + size;
 355
 356         if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
 357                 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
 358                 retval = -ENODEV;
 359                 goto out;
 360         }
 361         if(!check586(dev,(char *) dev->mem_start,size)) {
 362                 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
 363                 retval = -ENODEV;
 364                 goto out;
 365         }
 366
 367         ((struct priv *) (dev->priv))->memtop = (char *)dvma_btov(dev->mem_start);
 368         ((struct priv *) (dev->priv))->base = (unsigned long) dvma_btov(0);
 369         alloc586(dev);
 370
 371         /* set number of receive-buffs according to memsize */
 372         if(size == 0x2000)
 373                 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
 374         else if(size == 0x4000)
 375                 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
 376         else
 377                 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_32;
 378
 379         printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
 380
 381         dev->open               = sun3_82586_open;
 382         dev->stop               = sun3_82586_close;
 383         dev->get_stats          = sun3_82586_get_stats;
 384         dev->tx_timeout         = sun3_82586_timeout;
 385         dev->watchdog_timeo     = HZ/20;
 386         dev->hard_start_xmit    = sun3_82586_send_packet;
 387         dev->set_multicast_list = set_multicast_list;
 388
 389         dev->if_port            = 0;
 390         return 0;
 391 out:
 392         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 393         return retval;
 394 }
 395
 396
 397 static int init586(struct net_device *dev)
 398 {
 399         void *ptr;
 400         int i,result=0;
 401         struct priv *p = (struct priv *) dev->priv;
 402         volatile struct configure_cmd_struct    *cfg_cmd;
 403         volatile struct iasetup_cmd_struct *ias_cmd;
 404         volatile struct tdr_cmd_struct *tdr_cmd;
 405         volatile struct mcsetup_cmd_struct *mc_cmd;
 406         struct dev_mc_list *dmi=dev->mc_list;
 407         int num_addrs=dev->mc_count;
 408
 409         ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
 410
 411         cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
 412         cfg_cmd->cmd_status     = 0;
 413         cfg_cmd->cmd_cmd        = swab16(CMD_CONFIGURE | CMD_LAST);
 414         cfg_cmd->cmd_link       = 0xffff;
 415
 416         cfg_cmd->byte_cnt       = 0x0a; /* number of cfg bytes */
 417         cfg_cmd->fifo           = fifo; /* fifo-limit (8=tx:32/rx:64) */
 418         cfg_cmd->sav_bf         = 0x40; /* hold or discard bad recv frames (bit 7) */
 419         cfg_cmd->adr_len        = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
 420         cfg_cmd->priority       = 0x00;
 421         cfg_cmd->ifs            = 0x60;
 422         cfg_cmd->time_low       = 0x00;
 423         cfg_cmd->time_high      = 0xf2;
 424         cfg_cmd->promisc        = 0;
 425         if(dev->flags & IFF_ALLMULTI) {
 426                 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
 427                 if(num_addrs > len)     {
 428                         printk("%s: switching to promisc. mode\n",dev->name);
 429                         dev->flags|=IFF_PROMISC;
 430                 }
 431         }
 432         if(dev->flags&IFF_PROMISC)
 433         {
 434                          cfg_cmd->promisc=1;
 435                          dev->flags|=IFF_PROMISC;
 436         }
 437         cfg_cmd->carr_coll      = 0x00;
 438
 439         p->scb->cbl_offset      = make16(cfg_cmd);
 440         p->scb->cmd_ruc         = 0;
 441
 442         p->scb->cmd_cuc         = CUC_START; /* cmd.-unit start */
 443         sun3_attn586();
 444
 445         WAIT_4_STAT_COMPL(cfg_cmd);
 446
 447         if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
 448         {
 449                 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
 450                 return 1;
 451         }
 452
 453         /*
 454          * individual address setup
 455          */
 456
 457         ias_cmd = (struct iasetup_cmd_struct *)ptr;
 458
 459         ias_cmd->cmd_status     = 0;
 460         ias_cmd->cmd_cmd        = swab16(CMD_IASETUP | CMD_LAST);
 461         ias_cmd->cmd_link       = 0xffff;
 462
 463         memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
 464
 465         p->scb->cbl_offset = make16(ias_cmd);
 466
 467         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 468         sun3_attn586();
 469
 470         WAIT_4_STAT_COMPL(ias_cmd);
 471
 472         if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
 473                 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
 474                 return 1;
 475         }
 476
 477         /*
 478          * TDR, wire check .. e.g. no resistor e.t.c
 479          */
 480
 481         tdr_cmd = (struct tdr_cmd_struct *)ptr;
 482
 483         tdr_cmd->cmd_status     = 0;
 484         tdr_cmd->cmd_cmd        = swab16(CMD_TDR | CMD_LAST);
 485         tdr_cmd->cmd_link       = 0xffff;
 486         tdr_cmd->status         = 0;
 487
 488         p->scb->cbl_offset = make16(tdr_cmd);
 489         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 490         sun3_attn586();
 491
 492         WAIT_4_STAT_COMPL(tdr_cmd);
 493
 494         if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
 495         {
 496                 printk("%s: Problems while running the TDR.\n",dev->name);
 497         }
 498         else
 499         {
 500                 DELAY_16(); /* wait for result */
 501                 result = swab16(tdr_cmd->status);
 502
 503                 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 504                 sun3_attn586(); /* ack the interrupts */
 505
 506                 if(result & TDR_LNK_OK)
 507                         ;
 508                 else if(result & TDR_XCVR_PRB)
 509                         printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
 510                 else if(result & TDR_ET_OPN)
 511                         printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 512                 else if(result & TDR_ET_SRT)
 513                 {
 514                         if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
 515                                 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 516                 }
 517                 else
 518                         printk("%s: TDR: Unknown status %04x\n",dev->name,result);
 519         }
 520
 521         /*
 522          * Multicast setup
 523          */
 524         if(num_addrs && !(dev->flags & IFF_PROMISC) )
 525         {
 526                 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
 527                 mc_cmd->cmd_status = 0;
 528                 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
 529                 mc_cmd->cmd_link = 0xffff;
 530                 mc_cmd->mc_cnt = swab16(num_addrs * 6);
 531
 532                 for(i=0;i<num_addrs;i++,dmi=dmi->next)
 533                         memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
 534
 535                 p->scb->cbl_offset = make16(mc_cmd);
 536                 p->scb->cmd_cuc = CUC_START;
 537                 sun3_attn586();
 538
 539                 WAIT_4_STAT_COMPL(mc_cmd);
 540
 541                 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
 542                         printk("%s: Can't apply multicast-address-list.\n",dev->name);
 543         }
 544
 545         /*
 546          * alloc nop/xmit-cmds
 547          */
 548 #if (NUM_XMIT_BUFFS == 1)
 549         for(i=0;i<2;i++)
 550         {
 551                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 552                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 553                 p->nop_cmds[i]->cmd_status      = 0;
 554                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 555                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 556         }
 557 #else
 558         for(i=0;i<NUM_XMIT_BUFFS;i++)
 559         {
 560                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 561                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 562                 p->nop_cmds[i]->cmd_status      = 0;
 563                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 564                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 565         }
 566 #endif
 567
 568         ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
 569
 570         /*
 571          * alloc xmit-buffs / init xmit_cmds
 572          */
 573         for(i=0;i<NUM_XMIT_BUFFS;i++)
 574         {
 575                 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
 576                 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
 577                 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
 578                 ptr = (char *) ptr + XMIT_BUFF_SIZE;
 579                 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
 580                 ptr = (char *) ptr + sizeof(struct tbd_struct);
 581                 if((void *)ptr > (void *)dev->mem_end)
 582                 {
 583                         printk("%s: not enough shared-mem for your configuration!\n",dev->name);
 584                         return 1;
 585                 }
 586                 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
 587                 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
 588                 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
 589                 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
 590                 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
 591                 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
 592                 p->xmit_buffs[i]->next = 0xffff;
 593                 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
 594         }
 595
 596         p->xmit_count = 0;
 597         p->xmit_last    = 0;
 598 #ifndef NO_NOPCOMMANDS
 599         p->nop_point    = 0;
 600 #endif
 601
 602          /*
 603                 * 'start transmitter'
 604                 */
 605 #ifndef NO_NOPCOMMANDS
 606         p->scb->cbl_offset = make16(p->nop_cmds[0]);
 607         p->scb->cmd_cuc = CUC_START;
 608         sun3_attn586();
 609         WAIT_4_SCB_CMD();
 610 #else
 611         p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
 612         p->xmit_cmds[0]->cmd_cmd        = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
 613 #endif
 614
 615         /*
 616          * ack. interrupts
 617          */
 618         p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 619         sun3_attn586();
 620         DELAY_16();
 621
 622         sun3_enaint();
 623         sun3_active();
 624
 625         return 0;
 626 }
 627
 628 /******************************************************
 629  * This is a helper routine for sun3_82586_rnr_int() and init586().
 630  * It sets up the Receive Frame Area (RFA).
 631  */
 632
 633 static void *alloc_rfa(struct net_device *dev,void *ptr)
 634 {
 635         volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
 636         volatile struct rbd_struct *rbd;
 637         int i;
 638         struct priv *p = (struct priv *) dev->priv;
 639
 640         memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
 641         p->rfd_first = rfd;
 642
 643         for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
 644                 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
 645                 rfd[i].rbd_offset = 0xffff;
 646         }
 647         rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;         /* RU suspend */
 648
 649         ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
 650
 651         rbd = (struct rbd_struct *) ptr;
 652         ptr = (void *) (rbd + p->num_recv_buffs);
 653
 654          /* clr descriptors */
 655         memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
 656
 657         for(i=0;i<p->num_recv_buffs;i++)
 658         {
 659                 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
 660                 rbd[i].size = swab16(RECV_BUFF_SIZE);
 661                 rbd[i].buffer = make24(ptr);
 662                 ptr = (char *) ptr + RECV_BUFF_SIZE;
 663         }
 664
 665         p->rfd_top      = p->rfd_first;
 666         p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
 667
 668         p->scb->rfa_offset              = make16(p->rfd_first);
 669         p->rfd_first->rbd_offset        = make16(rbd);
 670
 671         return ptr;
 672 }
 673
 674
 675 /**************************************************
 676  * Interrupt Handler ...
 677  */
 678
 679 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
 680 {
 681         struct net_device *dev = dev_id;
 682         unsigned short stat;
 683         int cnt=0;
 684         struct priv *p;
 685
 686         if (!dev) {
 687                 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
 688                 return IRQ_NONE;
 689         }
 690         p = (struct priv *) dev->priv;
 691
 692         if(debuglevel > 1)
 693                 printk("I");
 694
 695         WAIT_4_SCB_CMD(); /* wait for last command      */
 696
 697         while((stat=p->scb->cus & STAT_MASK))
 698         {
 699                 p->scb->cmd_cuc = stat;
 700                 sun3_attn586();
 701
 702                 if(stat & STAT_FR)       /* received a frame */
 703                         sun3_82586_rcv_int(dev);
 704
 705                 if(stat & STAT_RNR) /* RU went 'not ready' */
 706                 {
 707                         printk("(R)");
 708                         if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
 709                         {
 710                                 WAIT_4_SCB_CMD();
 711                                 p->scb->cmd_ruc = RUC_RESUME;
 712                                 sun3_attn586();
 713                                 WAIT_4_SCB_CMD_RUC();
 714                         }
 715                         else
 716                         {
 717                                 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
 718                                 sun3_82586_rnr_int(dev);
 719                         }
 720                 }
 721
 722                 if(stat & STAT_CX)              /* command with I-bit set complete */
 723                          sun3_82586_xmt_int(dev);
 724
 725 #ifndef NO_NOPCOMMANDS
 726                 if(stat & STAT_CNA)     /* CU went 'not ready' */
 727                 {
 728                         if(netif_running(dev))
 729                                 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
 730                 }
 731 #endif
 732
 733                 if(debuglevel > 1)
 734                         printk("%d",cnt++);
 735
 736                 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
 737                 if(p->scb->cmd_cuc)      /* timed out? */
 738                 {
 739                         printk("%s: Acknowledge timed out.\n",dev->name);
 740                         sun3_disint();
 741                         break;
 742                 }
 743         }
 744
 745         if(debuglevel > 1)
 746                 printk("i");
 747         return IRQ_HANDLED;
 748 }
 749
 750 /*******************************************************
 751  * receive-interrupt
 752  */
 753
 754 static void sun3_82586_rcv_int(struct net_device *dev)
 755 {
 756         int status,cnt=0;
 757         unsigned short totlen;
 758         struct sk_buff *skb;
 759         struct rbd_struct *rbd;
 760         struct priv *p = (struct priv *) dev->priv;
 761
 762         if(debuglevel > 0)
 763                 printk("R");
 764
 765         for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
 766         {
 767                         rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
 768
 769                         if(status & RFD_OK) /* frame received without error? */
 770                         {
 771                                 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
 772                                 {
 773                                         totlen &= RBD_MASK; /* length of this frame */
 774                                         rbd->status = 0;
 775                                         skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
 776                                         if(skb != NULL)
 777                                         {
 778                                                 skb->dev = dev;
 779                                                 skb_reserve(skb,2);
 780                                                 skb_put(skb,totlen);
 781                                                 eth_copy_and_sum(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen,0);
 782                                                 skb->protocol=eth_type_trans(skb,dev);
 783                                                 netif_rx(skb);
 784                                                 p->stats.rx_packets++;
 785                                         }
 786                                         else
 787                                                 p->stats.rx_dropped++;
 788                                 }
 789                                 else
 790                                 {
 791                                         int rstat;
 792                                                  /* free all RBD's until RBD_LAST is set */
 793                                         totlen = 0;
 794                                         while(!((rstat=swab16(rbd->status)) & RBD_LAST))
 795                                         {
 796                                                 totlen += rstat & RBD_MASK;
 797                                                 if(!rstat)
 798                                                 {
 799                                                         printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
 800                                                         break;
 801                                                 }
 802                                                 rbd->status = 0;
 803                                                 rbd = (struct rbd_struct *) make32(rbd->next);
 804                                         }
 805                                         totlen += rstat & RBD_MASK;
 806                                         rbd->status = 0;
 807                                         printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
 808                                         p->stats.rx_dropped++;
 809                          }
 810                 }
 811                 else /* frame !(ok), only with 'save-bad-frames' */
 812                 {
 813                         printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
 814                         p->stats.rx_errors++;
 815                 }
 816                 p->rfd_top->stat_high = 0;
 817                 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
 818                 p->rfd_top->rbd_offset = 0xffff;
 819                 p->rfd_last->last = 0;                          /* delete RFD_SUSP      */
 820                 p->rfd_last = p->rfd_top;
 821                 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
 822                 p->scb->rfa_offset = make16(p->rfd_top);
 823
 824                 if(debuglevel > 0)
 825                         printk("%d",cnt++);
 826         }
 827
 828         if(automatic_resume)
 829         {
 830                 WAIT_4_SCB_CMD();
 831                 p->scb->cmd_ruc = RUC_RESUME;
 832                 sun3_attn586();
 833                 WAIT_4_SCB_CMD_RUC();
 834         }
 835
 836 #ifdef WAIT_4_BUSY
 837         {
 838                 int i;
 839                 for(i=0;i<1024;i++)
 840                 {
 841                         if(p->rfd_top->status)
 842                                 break;
 843                         DELAY_16();
 844                         if(i == 1023)
 845                                 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
 846                 }
 847         }
 848 #endif
 849
 850 #if 0
 851         if(!at_least_one)
 852         {
 853                 int i;
 854                 volatile struct rfd_struct *rfds=p->rfd_top;
 855                 volatile struct rbd_struct *rbds;
 856                 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
 857                 for(i=0;i< (p->num_recv_buffs+4);i++)
 858                 {
 859                         rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
 860                         printk("%04x:%04x ",rfds->status,rbds->status);
 861                         rfds = (struct rfd_struct *) make32(rfds->next);
 862                 }
 863                 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
 864                 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);
 865         }
 866         old_at_least = at_least_one;
 867 #endif
 868
 869         if(debuglevel > 0)
 870                 printk("r");
 871 }
 872
 873 /**********************************************************
 874  * handle 'Receiver went not ready'.
 875  */
 876
 877 static void sun3_82586_rnr_int(struct net_device *dev)
 878 {
 879         struct priv *p = (struct priv *) dev->priv;
 880
 881         p->stats.rx_errors++;
 882
 883         WAIT_4_SCB_CMD();               /* wait for the last cmd, WAIT_4_FULLSTAT?? */
 884         p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
 885         sun3_attn586();
 886         WAIT_4_SCB_CMD_RUC();           /* wait for accept cmd. */
 887
 888         alloc_rfa(dev,(char *)p->rfd_first);
 889 /* maybe add a check here, before restarting the RU */
 890         startrecv586(dev); /* restart RU */
 891
 892         printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
 893
 894 }
 895
 896 /**********************************************************
 897  * handle xmit - interrupt
 898  */
 899
 900 static void sun3_82586_xmt_int(struct net_device *dev)
 901 {
 902         int status;
 903         struct priv *p = (struct priv *) dev->priv;
 904
 905         if(debuglevel > 0)
 906                 printk("X");
 907
 908         status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
 909         if(!(status & STAT_COMPL))
 910                 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
 911
 912         if(status & STAT_OK)
 913         {
 914                 p->stats.tx_packets++;
 915                 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
 916         }
 917         else
 918         {
 919                 p->stats.tx_errors++;
 920                 if(status & TCMD_LATECOLL) {
 921                         printk("%s: late collision detected.\n",dev->name);
 922                         p->stats.collisions++;
 923                 }
 924                 else if(status & TCMD_NOCARRIER) {
 925                         p->stats.tx_carrier_errors++;
 926                         printk("%s: no carrier detected.\n",dev->name);
 927                 }
 928                 else if(status & TCMD_LOSTCTS)
 929                         printk("%s: loss of CTS detected.\n",dev->name);
 930                 else if(status & TCMD_UNDERRUN) {
 931                         p->stats.tx_fifo_errors++;
 932                         printk("%s: DMA underrun detected.\n",dev->name);
 933                 }
 934                 else if(status & TCMD_MAXCOLL) {
 935                         printk("%s: Max. collisions exceeded.\n",dev->name);
 936                         p->stats.collisions += 16;
 937                 }
 938         }
 939
 940 #if (NUM_XMIT_BUFFS > 1)
 941         if( (++p->xmit_last) == NUM_XMIT_BUFFS)
 942                 p->xmit_last = 0;
 943 #endif
 944         netif_wake_queue(dev);
 945 }
 946
 947 /***********************************************************
 948  * (re)start the receiver
 949  */
 950
 951 static void startrecv586(struct net_device *dev)
 952 {
 953         struct priv *p = (struct priv *) dev->priv;
 954
 955         WAIT_4_SCB_CMD();
 956         WAIT_4_SCB_CMD_RUC();
 957         p->scb->rfa_offset = make16(p->rfd_first);
 958         p->scb->cmd_ruc = RUC_START;
 959         sun3_attn586();         /* start cmd. */
 960         WAIT_4_SCB_CMD_RUC();   /* wait for accept cmd. (no timeout!!) */
 961 }
 962
 963 static void sun3_82586_timeout(struct net_device *dev)
 964 {
 965         struct priv *p = (struct priv *) dev->priv;
 966 #ifndef NO_NOPCOMMANDS
 967         if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
 968         {
 969                 netif_wake_queue(dev);
 970 #ifdef DEBUG
 971                 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
 972                 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);
 973 #endif
 974                 p->scb->cmd_cuc = CUC_ABORT;
 975                 sun3_attn586();
 976                 WAIT_4_SCB_CMD();
 977                 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
 978                 p->scb->cmd_cuc = CUC_START;
 979                 sun3_attn586();
 980                 WAIT_4_SCB_CMD();
 981                 dev->trans_start = jiffies;
 982                 return 0;
 983         }
 984 #endif
 985         {
 986 #ifdef DEBUG
 987                 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
 988                 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
 989                 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
 990 #endif
 991                 sun3_82586_close(dev);
 992                 sun3_82586_open(dev);
 993         }
 994         dev->trans_start = jiffies;
 995 }
 996
 997 /******************************************************
 998  * send frame
 999  */
1000
1001 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1002 {
1003         int len,i;
1004 #ifndef NO_NOPCOMMANDS
1005         int next_nop;
1006 #endif
1007         struct priv *p = (struct priv *) dev->priv;
1008
1009         if(skb->len > XMIT_BUFF_SIZE)
1010         {
1011                 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1012                 return 0;
1013         }
1014
1015         netif_stop_queue(dev);
1016
1017 #if(NUM_XMIT_BUFFS > 1)
1018         if(test_and_set_bit(0,(void *) &p->lock)) {
1019                 printk("%s: Queue was locked\n",dev->name);
1020                 return 1;
1021         }
1022         else
1023 #endif
1024         {
1025                 len = skb->len;
1026                 if (len < ETH_ZLEN) {
1027                         memset((char *)p->xmit_cbuffs[p->xmit_count], 0, ETH_ZLEN);
1028                         len = ETH_ZLEN;
1029                 }
1030                 memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len);
1031
1032 #if (NUM_XMIT_BUFFS == 1)
1033 #       ifdef NO_NOPCOMMANDS
1034
1035 #ifdef DEBUG
1036                 if(p->scb->cus & CU_ACTIVE)
1037                 {
1038                         printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1039                         printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1040                 }
1041 #endif
1042
1043                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1044                 for(i=0;i<16;i++)
1045                 {
1046                         p->xmit_cmds[0]->cmd_status = 0;
1047                         WAIT_4_SCB_CMD();
1048                         if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1049                                 p->scb->cmd_cuc = CUC_RESUME;
1050                         else
1051                         {
1052                                 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1053                                 p->scb->cmd_cuc = CUC_START;
1054                         }
1055
1056                         sun3_attn586();
1057                         dev->trans_start = jiffies;
1058                         if(!i)
1059                                 dev_kfree_skb(skb);
1060                         WAIT_4_SCB_CMD();
1061                         if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1062                                 break;
1063                         if(p->xmit_cmds[0]->cmd_status)
1064                                 break;
1065                         if(i==15)
1066                                 printk("%s: Can't start transmit-command.\n",dev->name);
1067                 }
1068 #       else
1069                 next_nop = (p->nop_point + 1) & 0x1;
1070                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1071
1072                 p->xmit_cmds[0]->cmd_link        = p->nop_cmds[next_nop]->cmd_link
1073                         = make16((p->nop_cmds[next_nop]));
1074                 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1075
1076                 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1077                 dev->trans_start = jiffies;
1078                 p->nop_point = next_nop;
1079                 dev_kfree_skb(skb);
1080 #       endif
1081 #else
1082                 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1083                 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1084                         next_nop = 0;
1085
1086                 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1087                 /* linkpointer of xmit-command already points to next nop cmd */
1088                 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1089                 p->nop_cmds[next_nop]->cmd_status = 0;
1090
1091                 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1092                 dev->trans_start = jiffies;
1093                 p->xmit_count = next_nop;
1094
1095                 {
1096                         unsigned long flags;
1097                         local_irq_save(flags);
1098                         if(p->xmit_count != p->xmit_last)
1099                                 netif_wake_queue(dev);
1100                         p->lock = 0;
1101                         local_irq_restore(flags);
1102                 }
1103                 dev_kfree_skb(skb);
1104 #endif
1105         }
1106         return 0;
1107 }
1108
1109 /*******************************************
1110  * Someone wanna have the statistics
1111  */
1112
1113 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1114 {
1115         struct priv *p = (struct priv *) dev->priv;
1116         unsigned short crc,aln,rsc,ovrn;
1117
1118         crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1119         p->scb->crc_errs = 0;
1120         aln = swab16(p->scb->aln_errs);
1121         p->scb->aln_errs = 0;
1122         rsc = swab16(p->scb->rsc_errs);
1123         p->scb->rsc_errs = 0;
1124         ovrn = swab16(p->scb->ovrn_errs);
1125         p->scb->ovrn_errs = 0;
1126
1127         p->stats.rx_crc_errors += crc;
1128         p->stats.rx_fifo_errors += ovrn;
1129         p->stats.rx_frame_errors += aln;
1130         p->stats.rx_dropped += rsc;
1131
1132         return &p->stats;
1133 }
1134
1135 /********************************************************
1136  * Set MC list ..
1137  */
1138
1139 static void set_multicast_list(struct net_device *dev)
1140 {
1141         netif_stop_queue(dev);
1142         sun3_disint();
1143         alloc586(dev);
1144         init586(dev);
1145         startrecv586(dev);
1146         sun3_enaint();
1147         netif_wake_queue(dev);
1148 }
1149
1150 #ifdef MODULE
1151 #error This code is not currently supported as a module
1152 static struct net_device *dev_sun3_82586;
1153
1154 int init_module(void)
1155 {
1156         dev_sun3_82586 = sun3_82586_probe(-1);
1157         if (IS_ERR(dev_sun3_82586))
1158                 return PTR_ERR(dev_sun3_82586);
1159         return 0;
1160 }
1161
1162 void cleanup_module(void)
1163 {
1164         unsigned long ioaddr = dev_sun3_82586->base_addr;
1165         unregister_netdev(dev_sun3_82586);
1166         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
1167         iounmap((void *)ioaddr);
1168         free_netdev(dev_sun3_82586);
1169 }
1170 #endif /* MODULE */
1171
1172 #if 0
1173 /*
1174  * DUMP .. we expect a not running CMD unit and enough space
1175  */
1176 void sun3_82586_dump(struct net_device *dev,void *ptr)
1177 {
1178         struct priv *p = (struct priv *) dev->priv;
1179         struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1180         int i;
1181
1182         p->scb->cmd_cuc = CUC_ABORT;
1183         sun3_attn586();
1184         WAIT_4_SCB_CMD();
1185         WAIT_4_SCB_CMD_RUC();
1186
1187         dump_cmd->cmd_status = 0;
1188         dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1189         dump_cmd->dump_offset = make16((dump_cmd + 1));
1190         dump_cmd->cmd_link = 0xffff;
1191
1192         p->scb->cbl_offset = make16(dump_cmd);
1193         p->scb->cmd_cuc = CUC_START;
1194         sun3_attn586();
1195         WAIT_4_STAT_COMPL(dump_cmd);
1196
1197         if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1198                                 printk("%s: Can't get dump information.\n",dev->name);
1199
1200         for(i=0;i<170;i++) {
1201                 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1202                 if(i % 24 == 23)
1203                         printk("\n");
1204         }
1205         printk("\n");
1206 }
1207 #endif
1208
1209 MODULE_LICENSE("GPL");