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 /* #define REALLY_SLOW_IO */
  32
  33 #include <linux/module.h>
  34 #include <linux/kernel.h>
  35 #include <linux/string.h>
  36 #include <linux/errno.h>
  37 #include <linux/ioport.h>
  38 #include <linux/slab.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/delay.h>
  41 #include <linux/init.h>
  42 #include <linux/bitops.h>
  43 #include <asm/io.h>
  44 #include <asm/idprom.h>
  45 #include <asm/machines.h>
  46 #include <asm/sun3mmu.h>
  47 #include <asm/dvma.h>
  48 #include <asm/byteorder.h>
  49
  50 #include <linux/netdevice.h>
  51 #include <linux/etherdevice.h>
  52 #include <linux/skbuff.h>
  53
  54 #include "sun3_82586.h"
  55
  56 #define DRV_NAME "sun3_82586"
  57
  58 #define DEBUG       /* debug on */
  59 #define SYSBUSVAL 0 /* 16 Bit */
  60 #define SUN3_82586_TOTAL_SIZE   PAGE_SIZE
  61
  62 #define sun3_attn586()  {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
  63 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
  64 #define sun3_disint()   {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
  65 #define sun3_enaint()   {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
  66 #define sun3_active()   {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
  67
  68 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
  69 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
  70 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
  71
  72 /******************* how to calculate the buffers *****************************
  73
  74   * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
  75   * --------------- in a different (more stable?) mode. Only in this mode it's
  76   *                 possible to configure the driver with 'NO_NOPCOMMANDS'
  77
  78 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
  79 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
  80 sizeof(rfd) = 24; sizeof(rbd) = 12;
  81 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
  82 sizeof(nop_cmd) = 8;
  83
  84   * if you don't know the driver, better do not change these values: */
  85
  86 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
  87 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
  88 #define NUM_XMIT_BUFFS 1    /* config for 32K shmem */
  89 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
  90 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
  91 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
  92 #define NO_NOPCOMMANDS      /* only possible with NUM_XMIT_BUFFS=1 */
  93
  94 /**************************************************************************/
  95
  96 /* different DELAYs */
  97 #define DELAY(x) mdelay(32 * x);
  98 #define DELAY_16(); { udelay(16); }
  99 #define DELAY_18(); { udelay(4); }
 100
 101 /* wait for command with timeout: */
 102 #define WAIT_4_SCB_CMD() \
 103 { int i; \
 104   for(i=0;i<16384;i++) { \
 105     if(!p->scb->cmd_cuc) break; \
 106     DELAY_18(); \
 107     if(i == 16383) { \
 108       printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
 109        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 110
 111 #define WAIT_4_SCB_CMD_RUC() { int i; \
 112   for(i=0;i<16384;i++) { \
 113     if(!p->scb->cmd_ruc) break; \
 114     DELAY_18(); \
 115     if(i == 16383) { \
 116       printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
 117        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 118
 119 #define WAIT_4_STAT_COMPL(addr) { int i; \
 120    for(i=0;i<32767;i++) { \
 121      if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
 122      DELAY_16(); DELAY_16(); } }
 123
 124 static int     sun3_82586_probe1(struct net_device *dev,int ioaddr);
 125 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr);
 126 static int     sun3_82586_open(struct net_device *dev);
 127 static int     sun3_82586_close(struct net_device *dev);
 128 static int     sun3_82586_send_packet(struct sk_buff *,struct net_device *);
 129 static struct  net_device_stats *sun3_82586_get_stats(struct net_device *dev);
 130 static void    set_multicast_list(struct net_device *dev);
 131 static void    sun3_82586_timeout(struct net_device *dev);
 132 #if 0
 133 static void    sun3_82586_dump(struct net_device *,void *);
 134 #endif
 135
 136 /* helper-functions */
 137 static int     init586(struct net_device *dev);
 138 static int     check586(struct net_device *dev,char *where,unsigned size);
 139 static void    alloc586(struct net_device *dev);
 140 static void    startrecv586(struct net_device *dev);
 141 static void   *alloc_rfa(struct net_device *dev,void *ptr);
 142 static void    sun3_82586_rcv_int(struct net_device *dev);
 143 static void    sun3_82586_xmt_int(struct net_device *dev);
 144 static void    sun3_82586_rnr_int(struct net_device *dev);
 145
 146 struct priv
 147 {
 148         struct net_device_stats stats;
 149         unsigned long base;
 150         char *memtop;
 151         long int lock;
 152         int reseted;
 153         volatile struct rfd_struct      *rfd_last,*rfd_top,*rfd_first;
 154         volatile struct scp_struct      *scp;   /* volatile is important */
 155         volatile struct iscp_struct     *iscp;  /* volatile is important */
 156         volatile struct scb_struct      *scb;   /* volatile is important */
 157         volatile struct tbd_struct      *xmit_buffs[NUM_XMIT_BUFFS];
 158         volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
 159 #if (NUM_XMIT_BUFFS == 1)
 160         volatile struct nop_cmd_struct *nop_cmds[2];
 161 #else
 162         volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
 163 #endif
 164         volatile int            nop_point,num_recv_buffs;
 165         volatile char           *xmit_cbuffs[NUM_XMIT_BUFFS];
 166         volatile int            xmit_count,xmit_last;
 167 };
 168
 169 /**********************************************
 170  * close device
 171  */
 172 static int sun3_82586_close(struct net_device *dev)
 173 {
 174         free_irq(dev->irq, dev);
 175
 176         sun3_reset586(); /* the hard way to stop the receiver */
 177
 178         netif_stop_queue(dev);
 179
 180         return 0;
 181 }
 182
 183 /**********************************************
 184  * open device
 185  */
 186 static int sun3_82586_open(struct net_device *dev)
 187 {
 188         int ret;
 189
 190         sun3_disint();
 191         alloc586(dev);
 192         init586(dev);
 193         startrecv586(dev);
 194         sun3_enaint();
 195
 196         ret = request_irq(dev->irq, &sun3_82586_interrupt,0,dev->name,dev);
 197         if (ret)
 198         {
 199                 sun3_reset586();
 200                 return ret;
 201         }
 202
 203         netif_start_queue(dev);
 204
 205         return 0; /* most done by init */
 206 }
 207
 208 /**********************************************
 209  * Check to see if there's an 82586 out there.
 210  */
 211 static int check586(struct net_device *dev,char *where,unsigned size)
 212 {
 213         struct priv pb;
 214         struct priv *p = /* (struct priv *) dev->priv*/ &pb;
 215         char *iscp_addr;
 216         int i;
 217
 218         p->base = (unsigned long) dvma_btov(0);
 219         p->memtop = (char *)dvma_btov((unsigned long)where);
 220         p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
 221         memset((char *)p->scp,0, sizeof(struct scp_struct));
 222         for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
 223                 if(((char *)p->scp)[i])
 224                         return 0;
 225         p->scp->sysbus = SYSBUSVAL;                             /* 1 = 8Bit-Bus, 0 = 16 Bit */
 226         if(p->scp->sysbus != SYSBUSVAL)
 227                 return 0;
 228
 229         iscp_addr = (char *)dvma_btov((unsigned long)where);
 230
 231         p->iscp = (struct iscp_struct *) iscp_addr;
 232         memset((char *)p->iscp,0, sizeof(struct iscp_struct));
 233
 234         p->scp->iscp = make24(p->iscp);
 235         p->iscp->busy = 1;
 236
 237         sun3_reset586();
 238         sun3_attn586();
 239         DELAY(1);       /* wait a while... */
 240
 241         if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
 242                 return 0;
 243
 244         return 1;
 245 }
 246
 247 /******************************************************************
 248  * set iscp at the right place, called by sun3_82586_probe1 and open586.
 249  */
 250 static void alloc586(struct net_device *dev)
 251 {
 252         struct priv *p =        (struct priv *) dev->priv;
 253
 254         sun3_reset586();
 255         DELAY(1);
 256
 257         p->scp  = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
 258         p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start);
 259         p->scb  = (struct scb_struct *)  ((char *)p->iscp + sizeof(struct iscp_struct));
 260
 261         memset((char *) p->iscp,0,sizeof(struct iscp_struct));
 262         memset((char *) p->scp ,0,sizeof(struct scp_struct));
 263
 264         p->scp->iscp = make24(p->iscp);
 265         p->scp->sysbus = SYSBUSVAL;
 266         p->iscp->scb_offset = make16(p->scb);
 267         p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
 268
 269         p->iscp->busy = 1;
 270         sun3_reset586();
 271         sun3_attn586();
 272
 273         DELAY(1);
 274
 275         if(p->iscp->busy)
 276                 printk("%s: Init-Problems (alloc).\n",dev->name);
 277
 278         p->reseted = 0;
 279
 280         memset((char *)p->scb,0,sizeof(struct scb_struct));
 281 }
 282
 283 struct net_device * __init sun3_82586_probe(int unit)
 284 {
 285         struct net_device *dev;
 286         unsigned long ioaddr;
 287         static int found = 0;
 288         int err = -ENOMEM;
 289
 290         /* check that this machine has an onboard 82586 */
 291         switch(idprom->id_machtype) {
 292         case SM_SUN3|SM_3_160:
 293         case SM_SUN3|SM_3_260:
 294                 /* these machines have 82586 */
 295                 break;
 296
 297         default:
 298                 return ERR_PTR(-ENODEV);
 299         }
 300
 301         if (found)
 302                 return ERR_PTR(-ENODEV);
 303
 304         ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
 305         if (!ioaddr)
 306                 return ERR_PTR(-ENOMEM);
 307         found = 1;
 308
 309         dev = alloc_etherdev(sizeof(struct priv));
 310         if (!dev)
 311                 goto out;
 312         if (unit >= 0) {
 313                 sprintf(dev->name, "eth%d", unit);
 314                 netdev_boot_setup_check(dev);
 315         }
 316         SET_MODULE_OWNER(dev);
 317
 318         dev->irq = IE_IRQ;
 319         dev->base_addr = ioaddr;
 320         err = sun3_82586_probe1(dev, ioaddr);
 321         if (err)
 322                 goto out1;
 323         err = register_netdev(dev);
 324         if (err)
 325                 goto out2;
 326         return dev;
 327
 328 out2:
 329         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 330 out1:
 331         free_netdev(dev);
 332 out:
 333         iounmap((void *)ioaddr);
 334         return ERR_PTR(err);
 335 }
 336
 337 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
 338 {
 339         int i, size, retval;
 340
 341         if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
 342                 return -EBUSY;
 343
 344         /* copy in the ethernet address from the prom */
 345         for(i = 0; i < 6 ; i++)
 346              dev->dev_addr[i] = idprom->id_ethaddr[i];
 347
 348         printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
 349
 350         /*
 351          * check (or search) IO-Memory, 32K
 352          */
 353         size = 0x8000;
 354
 355         dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
 356         dev->mem_end = dev->mem_start + size;
 357
 358         if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
 359                 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
 360                 retval = -ENODEV;
 361                 goto out;
 362         }
 363         if(!check586(dev,(char *) dev->mem_start,size)) {
 364                 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
 365                 retval = -ENODEV;
 366                 goto out;
 367         }
 368
 369         ((struct priv *) (dev->priv))->memtop = (char *)dvma_btov(dev->mem_start);
 370         ((struct priv *) (dev->priv))->base = (unsigned long) dvma_btov(0);
 371         alloc586(dev);
 372
 373         /* set number of receive-buffs according to memsize */
 374         if(size == 0x2000)
 375                 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
 376         else if(size == 0x4000)
 377                 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
 378         else
 379                 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_32;
 380
 381         printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
 382
 383         dev->open               = sun3_82586_open;
 384         dev->stop               = sun3_82586_close;
 385         dev->get_stats          = sun3_82586_get_stats;
 386         dev->tx_timeout         = sun3_82586_timeout;
 387         dev->watchdog_timeo     = HZ/20;
 388         dev->hard_start_xmit    = sun3_82586_send_packet;
 389         dev->set_multicast_list = set_multicast_list;
 390
 391         dev->if_port            = 0;
 392         return 0;
 393 out:
 394         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 395         return retval;
 396 }
 397
 398
 399 static int init586(struct net_device *dev)
 400 {
 401         void *ptr;
 402         int i,result=0;
 403         struct priv *p = (struct priv *) dev->priv;
 404         volatile struct configure_cmd_struct    *cfg_cmd;
 405         volatile struct iasetup_cmd_struct *ias_cmd;
 406         volatile struct tdr_cmd_struct *tdr_cmd;
 407         volatile struct mcsetup_cmd_struct *mc_cmd;
 408         struct dev_mc_list *dmi=dev->mc_list;
 409         int num_addrs=dev->mc_count;
 410
 411         ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
 412
 413         cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
 414         cfg_cmd->cmd_status     = 0;
 415         cfg_cmd->cmd_cmd        = swab16(CMD_CONFIGURE | CMD_LAST);
 416         cfg_cmd->cmd_link       = 0xffff;
 417
 418         cfg_cmd->byte_cnt       = 0x0a; /* number of cfg bytes */
 419         cfg_cmd->fifo           = fifo; /* fifo-limit (8=tx:32/rx:64) */
 420         cfg_cmd->sav_bf         = 0x40; /* hold or discard bad recv frames (bit 7) */
 421         cfg_cmd->adr_len        = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
 422         cfg_cmd->priority       = 0x00;
 423         cfg_cmd->ifs            = 0x60;
 424         cfg_cmd->time_low       = 0x00;
 425         cfg_cmd->time_high      = 0xf2;
 426         cfg_cmd->promisc        = 0;
 427         if(dev->flags & IFF_ALLMULTI) {
 428                 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
 429                 if(num_addrs > len)     {
 430                         printk("%s: switching to promisc. mode\n",dev->name);
 431                         dev->flags|=IFF_PROMISC;
 432                 }
 433         }
 434         if(dev->flags&IFF_PROMISC)
 435         {
 436                          cfg_cmd->promisc=1;
 437                          dev->flags|=IFF_PROMISC;
 438         }
 439         cfg_cmd->carr_coll      = 0x00;
 440
 441         p->scb->cbl_offset      = make16(cfg_cmd);
 442         p->scb->cmd_ruc         = 0;
 443
 444         p->scb->cmd_cuc         = CUC_START; /* cmd.-unit start */
 445         sun3_attn586();
 446
 447         WAIT_4_STAT_COMPL(cfg_cmd);
 448
 449         if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
 450         {
 451                 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
 452                 return 1;
 453         }
 454
 455         /*
 456          * individual address setup
 457          */
 458
 459         ias_cmd = (struct iasetup_cmd_struct *)ptr;
 460
 461         ias_cmd->cmd_status     = 0;
 462         ias_cmd->cmd_cmd        = swab16(CMD_IASETUP | CMD_LAST);
 463         ias_cmd->cmd_link       = 0xffff;
 464
 465         memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
 466
 467         p->scb->cbl_offset = make16(ias_cmd);
 468
 469         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 470         sun3_attn586();
 471
 472         WAIT_4_STAT_COMPL(ias_cmd);
 473
 474         if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
 475                 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
 476                 return 1;
 477         }
 478
 479         /*
 480          * TDR, wire check .. e.g. no resistor e.t.c
 481          */
 482
 483         tdr_cmd = (struct tdr_cmd_struct *)ptr;
 484
 485         tdr_cmd->cmd_status     = 0;
 486         tdr_cmd->cmd_cmd        = swab16(CMD_TDR | CMD_LAST);
 487         tdr_cmd->cmd_link       = 0xffff;
 488         tdr_cmd->status         = 0;
 489
 490         p->scb->cbl_offset = make16(tdr_cmd);
 491         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 492         sun3_attn586();
 493
 494         WAIT_4_STAT_COMPL(tdr_cmd);
 495
 496         if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
 497         {
 498                 printk("%s: Problems while running the TDR.\n",dev->name);
 499         }
 500         else
 501         {
 502                 DELAY_16(); /* wait for result */
 503                 result = swab16(tdr_cmd->status);
 504
 505                 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 506                 sun3_attn586(); /* ack the interrupts */
 507
 508                 if(result & TDR_LNK_OK)
 509                         ;
 510                 else if(result & TDR_XCVR_PRB)
 511                         printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
 512                 else if(result & TDR_ET_OPN)
 513                         printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 514                 else if(result & TDR_ET_SRT)
 515                 {
 516                         if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
 517                                 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 518                 }
 519                 else
 520                         printk("%s: TDR: Unknown status %04x\n",dev->name,result);
 521         }
 522
 523         /*
 524          * Multicast setup
 525          */
 526         if(num_addrs && !(dev->flags & IFF_PROMISC) )
 527         {
 528                 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
 529                 mc_cmd->cmd_status = 0;
 530                 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
 531                 mc_cmd->cmd_link = 0xffff;
 532                 mc_cmd->mc_cnt = swab16(num_addrs * 6);
 533
 534                 for(i=0;i<num_addrs;i++,dmi=dmi->next)
 535                         memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
 536
 537                 p->scb->cbl_offset = make16(mc_cmd);
 538                 p->scb->cmd_cuc = CUC_START;
 539                 sun3_attn586();
 540
 541                 WAIT_4_STAT_COMPL(mc_cmd);
 542
 543                 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
 544                         printk("%s: Can't apply multicast-address-list.\n",dev->name);
 545         }
 546
 547         /*
 548          * alloc nop/xmit-cmds
 549          */
 550 #if (NUM_XMIT_BUFFS == 1)
 551         for(i=0;i<2;i++)
 552         {
 553                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 554                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 555                 p->nop_cmds[i]->cmd_status      = 0;
 556                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 557                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 558         }
 559 #else
 560         for(i=0;i<NUM_XMIT_BUFFS;i++)
 561         {
 562                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 563                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 564                 p->nop_cmds[i]->cmd_status      = 0;
 565                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 566                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 567         }
 568 #endif
 569
 570         ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
 571
 572         /*
 573          * alloc xmit-buffs / init xmit_cmds
 574          */
 575         for(i=0;i<NUM_XMIT_BUFFS;i++)
 576         {
 577                 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
 578                 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
 579                 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
 580                 ptr = (char *) ptr + XMIT_BUFF_SIZE;
 581                 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
 582                 ptr = (char *) ptr + sizeof(struct tbd_struct);
 583                 if((void *)ptr > (void *)dev->mem_end)
 584                 {
 585                         printk("%s: not enough shared-mem for your configuration!\n",dev->name);
 586                         return 1;
 587                 }
 588                 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
 589                 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
 590                 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
 591                 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
 592                 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
 593                 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
 594                 p->xmit_buffs[i]->next = 0xffff;
 595                 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
 596         }
 597
 598         p->xmit_count = 0;
 599         p->xmit_last    = 0;
 600 #ifndef NO_NOPCOMMANDS
 601         p->nop_point    = 0;
 602 #endif
 603
 604          /*
 605                 * 'start transmitter'
 606                 */
 607 #ifndef NO_NOPCOMMANDS
 608         p->scb->cbl_offset = make16(p->nop_cmds[0]);
 609         p->scb->cmd_cuc = CUC_START;
 610         sun3_attn586();
 611         WAIT_4_SCB_CMD();
 612 #else
 613         p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
 614         p->xmit_cmds[0]->cmd_cmd        = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
 615 #endif
 616
 617         /*
 618          * ack. interrupts
 619          */
 620         p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 621         sun3_attn586();
 622         DELAY_16();
 623
 624         sun3_enaint();
 625         sun3_active();
 626
 627         return 0;
 628 }
 629
 630 /******************************************************
 631  * This is a helper routine for sun3_82586_rnr_int() and init586().
 632  * It sets up the Receive Frame Area (RFA).
 633  */
 634
 635 static void *alloc_rfa(struct net_device *dev,void *ptr)
 636 {
 637         volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
 638         volatile struct rbd_struct *rbd;
 639         int i;
 640         struct priv *p = (struct priv *) dev->priv;
 641
 642         memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
 643         p->rfd_first = rfd;
 644
 645         for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
 646                 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
 647                 rfd[i].rbd_offset = 0xffff;
 648         }
 649         rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;         /* RU suspend */
 650
 651         ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
 652
 653         rbd = (struct rbd_struct *) ptr;
 654         ptr = (void *) (rbd + p->num_recv_buffs);
 655
 656          /* clr descriptors */
 657         memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
 658
 659         for(i=0;i<p->num_recv_buffs;i++)
 660         {
 661                 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
 662                 rbd[i].size = swab16(RECV_BUFF_SIZE);
 663                 rbd[i].buffer = make24(ptr);
 664                 ptr = (char *) ptr + RECV_BUFF_SIZE;
 665         }
 666
 667         p->rfd_top      = p->rfd_first;
 668         p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
 669
 670         p->scb->rfa_offset              = make16(p->rfd_first);
 671         p->rfd_first->rbd_offset        = make16(rbd);
 672
 673         return ptr;
 674 }
 675
 676
 677 /**************************************************
 678  * Interrupt Handler ...
 679  */
 680
 681 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr)
 682 {
 683         struct net_device *dev = dev_id;
 684         unsigned short stat;
 685         int cnt=0;
 686         struct priv *p;
 687
 688         if (!dev) {
 689                 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
 690                 return IRQ_NONE;
 691         }
 692         p = (struct priv *) dev->priv;
 693
 694         if(debuglevel > 1)
 695                 printk("I");
 696
 697         WAIT_4_SCB_CMD(); /* wait for last command      */
 698
 699         while((stat=p->scb->cus & STAT_MASK))
 700         {
 701                 p->scb->cmd_cuc = stat;
 702                 sun3_attn586();
 703
 704                 if(stat & STAT_FR)       /* received a frame */
 705                         sun3_82586_rcv_int(dev);
 706
 707                 if(stat & STAT_RNR) /* RU went 'not ready' */
 708                 {
 709                         printk("(R)");
 710                         if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
 711                         {
 712                                 WAIT_4_SCB_CMD();
 713                                 p->scb->cmd_ruc = RUC_RESUME;
 714                                 sun3_attn586();
 715                                 WAIT_4_SCB_CMD_RUC();
 716                         }
 717                         else
 718                         {
 719                                 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
 720                                 sun3_82586_rnr_int(dev);
 721                         }
 722                 }
 723
 724                 if(stat & STAT_CX)              /* command with I-bit set complete */
 725                          sun3_82586_xmt_int(dev);
 726
 727 #ifndef NO_NOPCOMMANDS
 728                 if(stat & STAT_CNA)     /* CU went 'not ready' */
 729                 {
 730                         if(netif_running(dev))
 731                                 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
 732                 }
 733 #endif
 734
 735                 if(debuglevel > 1)
 736                         printk("%d",cnt++);
 737
 738                 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
 739                 if(p->scb->cmd_cuc)      /* timed out? */
 740                 {
 741                         printk("%s: Acknowledge timed out.\n",dev->name);
 742                         sun3_disint();
 743                         break;
 744                 }
 745         }
 746
 747         if(debuglevel > 1)
 748                 printk("i");
 749         return IRQ_HANDLED;
 750 }
 751
 752 /*******************************************************
 753  * receive-interrupt
 754  */
 755
 756 static void sun3_82586_rcv_int(struct net_device *dev)
 757 {
 758         int status,cnt=0;
 759         unsigned short totlen;
 760         struct sk_buff *skb;
 761         struct rbd_struct *rbd;
 762         struct priv *p = (struct priv *) dev->priv;
 763
 764         if(debuglevel > 0)
 765                 printk("R");
 766
 767         for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
 768         {
 769                         rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
 770
 771                         if(status & RFD_OK) /* frame received without error? */
 772                         {
 773                                 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
 774                                 {
 775                                         totlen &= RBD_MASK; /* length of this frame */
 776                                         rbd->status = 0;
 777                                         skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
 778                                         if(skb != NULL)
 779                                         {
 780                                                 skb->dev = dev;
 781                                                 skb_reserve(skb,2);
 782                                                 skb_put(skb,totlen);
 783                                                 eth_copy_and_sum(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen,0);
 784                                                 skb->protocol=eth_type_trans(skb,dev);
 785                                                 netif_rx(skb);
 786                                                 p->stats.rx_packets++;
 787                                         }
 788                                         else
 789                                                 p->stats.rx_dropped++;
 790                                 }
 791                                 else
 792                                 {
 793                                         int rstat;
 794                                                  /* free all RBD's until RBD_LAST is set */
 795                                         totlen = 0;
 796                                         while(!((rstat=swab16(rbd->status)) & RBD_LAST))
 797                                         {
 798                                                 totlen += rstat & RBD_MASK;
 799                                                 if(!rstat)
 800                                                 {
 801                                                         printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
 802                                                         break;
 803                                                 }
 804                                                 rbd->status = 0;
 805                                                 rbd = (struct rbd_struct *) make32(rbd->next);
 806                                         }
 807                                         totlen += rstat & RBD_MASK;
 808                                         rbd->status = 0;
 809                                         printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
 810                                         p->stats.rx_dropped++;
 811                          }
 812                 }
 813                 else /* frame !(ok), only with 'save-bad-frames' */
 814                 {
 815                         printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
 816                         p->stats.rx_errors++;
 817                 }
 818                 p->rfd_top->stat_high = 0;
 819                 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
 820                 p->rfd_top->rbd_offset = 0xffff;
 821                 p->rfd_last->last = 0;                          /* delete RFD_SUSP      */
 822                 p->rfd_last = p->rfd_top;
 823                 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
 824                 p->scb->rfa_offset = make16(p->rfd_top);
 825
 826                 if(debuglevel > 0)
 827                         printk("%d",cnt++);
 828         }
 829
 830         if(automatic_resume)
 831         {
 832                 WAIT_4_SCB_CMD();
 833                 p->scb->cmd_ruc = RUC_RESUME;
 834                 sun3_attn586();
 835                 WAIT_4_SCB_CMD_RUC();
 836         }
 837
 838 #ifdef WAIT_4_BUSY
 839         {
 840                 int i;
 841                 for(i=0;i<1024;i++)
 842                 {
 843                         if(p->rfd_top->status)
 844                                 break;
 845                         DELAY_16();
 846                         if(i == 1023)
 847                                 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
 848                 }
 849         }
 850 #endif
 851
 852 #if 0
 853         if(!at_least_one)
 854         {
 855                 int i;
 856                 volatile struct rfd_struct *rfds=p->rfd_top;
 857                 volatile struct rbd_struct *rbds;
 858                 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
 859                 for(i=0;i< (p->num_recv_buffs+4);i++)
 860                 {
 861                         rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
 862                         printk("%04x:%04x ",rfds->status,rbds->status);
 863                         rfds = (struct rfd_struct *) make32(rfds->next);
 864                 }
 865                 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
 866                 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);
 867         }
 868         old_at_least = at_least_one;
 869 #endif
 870
 871         if(debuglevel > 0)
 872                 printk("r");
 873 }
 874
 875 /**********************************************************
 876  * handle 'Receiver went not ready'.
 877  */
 878
 879 static void sun3_82586_rnr_int(struct net_device *dev)
 880 {
 881         struct priv *p = (struct priv *) dev->priv;
 882
 883         p->stats.rx_errors++;
 884
 885         WAIT_4_SCB_CMD();               /* wait for the last cmd, WAIT_4_FULLSTAT?? */
 886         p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
 887         sun3_attn586();
 888         WAIT_4_SCB_CMD_RUC();           /* wait for accept cmd. */
 889
 890         alloc_rfa(dev,(char *)p->rfd_first);
 891 /* maybe add a check here, before restarting the RU */
 892         startrecv586(dev); /* restart RU */
 893
 894         printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
 895
 896 }
 897
 898 /**********************************************************
 899  * handle xmit - interrupt
 900  */
 901
 902 static void sun3_82586_xmt_int(struct net_device *dev)
 903 {
 904         int status;
 905         struct priv *p = (struct priv *) dev->priv;
 906
 907         if(debuglevel > 0)
 908                 printk("X");
 909
 910         status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
 911         if(!(status & STAT_COMPL))
 912                 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
 913
 914         if(status & STAT_OK)
 915         {
 916                 p->stats.tx_packets++;
 917                 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
 918         }
 919         else
 920         {
 921                 p->stats.tx_errors++;
 922                 if(status & TCMD_LATECOLL) {
 923                         printk("%s: late collision detected.\n",dev->name);
 924                         p->stats.collisions++;
 925                 }
 926                 else if(status & TCMD_NOCARRIER) {
 927                         p->stats.tx_carrier_errors++;
 928                         printk("%s: no carrier detected.\n",dev->name);
 929                 }
 930                 else if(status & TCMD_LOSTCTS)
 931                         printk("%s: loss of CTS detected.\n",dev->name);
 932                 else if(status & TCMD_UNDERRUN) {
 933                         p->stats.tx_fifo_errors++;
 934                         printk("%s: DMA underrun detected.\n",dev->name);
 935                 }
 936                 else if(status & TCMD_MAXCOLL) {
 937                         printk("%s: Max. collisions exceeded.\n",dev->name);
 938                         p->stats.collisions += 16;
 939                 }
 940         }
 941
 942 #if (NUM_XMIT_BUFFS > 1)
 943         if( (++p->xmit_last) == NUM_XMIT_BUFFS)
 944                 p->xmit_last = 0;
 945 #endif
 946         netif_wake_queue(dev);
 947 }
 948
 949 /***********************************************************
 950  * (re)start the receiver
 951  */
 952
 953 static void startrecv586(struct net_device *dev)
 954 {
 955         struct priv *p = (struct priv *) dev->priv;
 956
 957         WAIT_4_SCB_CMD();
 958         WAIT_4_SCB_CMD_RUC();
 959         p->scb->rfa_offset = make16(p->rfd_first);
 960         p->scb->cmd_ruc = RUC_START;
 961         sun3_attn586();         /* start cmd. */
 962         WAIT_4_SCB_CMD_RUC();   /* wait for accept cmd. (no timeout!!) */
 963 }
 964
 965 static void sun3_82586_timeout(struct net_device *dev)
 966 {
 967         struct priv *p = (struct priv *) dev->priv;
 968 #ifndef NO_NOPCOMMANDS
 969         if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
 970         {
 971                 netif_wake_queue(dev);
 972 #ifdef DEBUG
 973                 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
 974                 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);
 975 #endif
 976                 p->scb->cmd_cuc = CUC_ABORT;
 977                 sun3_attn586();
 978                 WAIT_4_SCB_CMD();
 979                 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
 980                 p->scb->cmd_cuc = CUC_START;
 981                 sun3_attn586();
 982                 WAIT_4_SCB_CMD();
 983                 dev->trans_start = jiffies;
 984                 return 0;
 985         }
 986 #endif
 987         {
 988 #ifdef DEBUG
 989                 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
 990                 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
 991                 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
 992 #endif
 993                 sun3_82586_close(dev);
 994                 sun3_82586_open(dev);
 995         }
 996         dev->trans_start = jiffies;
 997 }
 998
 999 /******************************************************
1000  * send frame
1001  */
1002
1003 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1004 {
1005         int len,i;
1006 #ifndef NO_NOPCOMMANDS
1007         int next_nop;
1008 #endif
1009         struct priv *p = (struct priv *) dev->priv;
1010
1011         if(skb->len > XMIT_BUFF_SIZE)
1012         {
1013                 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1014                 return 0;
1015         }
1016
1017         netif_stop_queue(dev);
1018
1019 #if(NUM_XMIT_BUFFS > 1)
1020         if(test_and_set_bit(0,(void *) &p->lock)) {
1021                 printk("%s: Queue was locked\n",dev->name);
1022                 return 1;
1023         }
1024         else
1025 #endif
1026         {
1027                 len = skb->len;
1028                 if (len < ETH_ZLEN) {
1029                         memset((char *)p->xmit_cbuffs[p->xmit_count], 0, ETH_ZLEN);
1030                         len = ETH_ZLEN;
1031                 }
1032                 memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len);
1033
1034 #if (NUM_XMIT_BUFFS == 1)
1035 #       ifdef NO_NOPCOMMANDS
1036
1037 #ifdef DEBUG
1038                 if(p->scb->cus & CU_ACTIVE)
1039                 {
1040                         printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1041                         printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1042                 }
1043 #endif
1044
1045                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1046                 for(i=0;i<16;i++)
1047                 {
1048                         p->xmit_cmds[0]->cmd_status = 0;
1049                         WAIT_4_SCB_CMD();
1050                         if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1051                                 p->scb->cmd_cuc = CUC_RESUME;
1052                         else
1053                         {
1054                                 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1055                                 p->scb->cmd_cuc = CUC_START;
1056                         }
1057
1058                         sun3_attn586();
1059                         dev->trans_start = jiffies;
1060                         if(!i)
1061                                 dev_kfree_skb(skb);
1062                         WAIT_4_SCB_CMD();
1063                         if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1064                                 break;
1065                         if(p->xmit_cmds[0]->cmd_status)
1066                                 break;
1067                         if(i==15)
1068                                 printk("%s: Can't start transmit-command.\n",dev->name);
1069                 }
1070 #       else
1071                 next_nop = (p->nop_point + 1) & 0x1;
1072                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1073
1074                 p->xmit_cmds[0]->cmd_link        = p->nop_cmds[next_nop]->cmd_link
1075                         = make16((p->nop_cmds[next_nop]));
1076                 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1077
1078                 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1079                 dev->trans_start = jiffies;
1080                 p->nop_point = next_nop;
1081                 dev_kfree_skb(skb);
1082 #       endif
1083 #else
1084                 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1085                 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1086                         next_nop = 0;
1087
1088                 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1089                 /* linkpointer of xmit-command already points to next nop cmd */
1090                 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1091                 p->nop_cmds[next_nop]->cmd_status = 0;
1092
1093                 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1094                 dev->trans_start = jiffies;
1095                 p->xmit_count = next_nop;
1096
1097                 {
1098                         unsigned long flags;
1099                         local_irq_save(flags);
1100                         if(p->xmit_count != p->xmit_last)
1101                                 netif_wake_queue(dev);
1102                         p->lock = 0;
1103                         local_irq_restore(flags);
1104                 }
1105                 dev_kfree_skb(skb);
1106 #endif
1107         }
1108         return 0;
1109 }
1110
1111 /*******************************************
1112  * Someone wanna have the statistics
1113  */
1114
1115 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1116 {
1117         struct priv *p = (struct priv *) dev->priv;
1118         unsigned short crc,aln,rsc,ovrn;
1119
1120         crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1121         p->scb->crc_errs = 0;
1122         aln = swab16(p->scb->aln_errs);
1123         p->scb->aln_errs = 0;
1124         rsc = swab16(p->scb->rsc_errs);
1125         p->scb->rsc_errs = 0;
1126         ovrn = swab16(p->scb->ovrn_errs);
1127         p->scb->ovrn_errs = 0;
1128
1129         p->stats.rx_crc_errors += crc;
1130         p->stats.rx_fifo_errors += ovrn;
1131         p->stats.rx_frame_errors += aln;
1132         p->stats.rx_dropped += rsc;
1133
1134         return &p->stats;
1135 }
1136
1137 /********************************************************
1138  * Set MC list ..
1139  */
1140
1141 static void set_multicast_list(struct net_device *dev)
1142 {
1143         netif_stop_queue(dev);
1144         sun3_disint();
1145         alloc586(dev);
1146         init586(dev);
1147         startrecv586(dev);
1148         sun3_enaint();
1149         netif_wake_queue(dev);
1150 }
1151
1152 #ifdef MODULE
1153 #error This code is not currently supported as a module
1154 static struct net_device *dev_sun3_82586;
1155
1156 int init_module(void)
1157 {
1158         dev_sun3_82586 = sun3_82586_probe(-1);
1159         if (IS_ERR(dev_sun3_82586))
1160                 return PTR_ERR(dev_sun3_82586);
1161         return 0;
1162 }
1163
1164 void cleanup_module(void)
1165 {
1166         unsigned long ioaddr = dev_sun3_82586->base_addr;
1167         unregister_netdev(dev_sun3_82586);
1168         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
1169         iounmap((void *)ioaddr);
1170         free_netdev(dev_sun3_82586);
1171 }
1172 #endif /* MODULE */
1173
1174 #if 0
1175 /*
1176  * DUMP .. we expect a not running CMD unit and enough space
1177  */
1178 void sun3_82586_dump(struct net_device *dev,void *ptr)
1179 {
1180         struct priv *p = (struct priv *) dev->priv;
1181         struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1182         int i;
1183
1184         p->scb->cmd_cuc = CUC_ABORT;
1185         sun3_attn586();
1186         WAIT_4_SCB_CMD();
1187         WAIT_4_SCB_CMD_RUC();
1188
1189         dump_cmd->cmd_status = 0;
1190         dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1191         dump_cmd->dump_offset = make16((dump_cmd + 1));
1192         dump_cmd->cmd_link = 0xffff;
1193
1194         p->scb->cbl_offset = make16(dump_cmd);
1195         p->scb->cmd_cuc = CUC_START;
1196         sun3_attn586();
1197         WAIT_4_STAT_COMPL(dump_cmd);
1198
1199         if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1200                                 printk("%s: Can't get dump information.\n",dev->name);
1201
1202         for(i=0;i<170;i++) {
1203                 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1204                 if(i % 24 == 23)
1205                         printk("\n");
1206         }
1207         printk("\n");
1208 }
1209 #endif
1210
1211 MODULE_LICENSE("GPL");