drivers/net/ethernet/i825xx/sun3_82586.c

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