SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/sun3_82586.c

   1 /*
   2  * Sun3 i82586 Ethernet driver
   3  *
   4  * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net)
   5  *
   6  * Original copyright follows:
   7  * --------------------------
   8  *
   9  * net-3-driver for the NI5210 card (i82586 Ethernet chip)
  10  *
  11  * This is an extension to the Linux operating system, and is covered by the
  12  * same Gnu Public License that covers that work.
  13  *
  14  * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
  15  * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
  16  * --------------------------
  17  *
  18  * Consult ni52.c for further notes from the original driver.
  19  *
  20  * This incarnation currently supports the OBIO version of the i82586 chip
  21  * used in certain sun3 models.  It should be fairly doable to expand this
  22  * to support VME if I should every acquire such a board.
  23  *
  24  */
  25
  26 static int debuglevel = 0; /* debug-printk 0: off 1: a few 2: more */
  27 static int automatic_resume = 0; /* experimental .. better should be zero */
  28 static int rfdadd = 0; /* rfdadd=1 may be better for 8K MEM cards */
  29 static int fifo=0x8;    /* don't change */
  30
  31 #include <linux/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/string.h>
  34 #include <linux/errno.h>
  35 #include <linux/ioport.h>
  36 #include <linux/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 int     sun3_82586_send_packet(struct sk_buff *,struct net_device *);
 126 static struct  net_device_stats *sun3_82586_get_stats(struct net_device *dev);
 127 static void    set_multicast_list(struct net_device *dev);
 128 static void    sun3_82586_timeout(struct net_device *dev);
 129 #if 0
 130 static void    sun3_82586_dump(struct net_device *,void *);
 131 #endif
 132
 133 /* helper-functions */
 134 static int     init586(struct net_device *dev);
 135 static int     check586(struct net_device *dev,char *where,unsigned size);
 136 static void    alloc586(struct net_device *dev);
 137 static void    startrecv586(struct net_device *dev);
 138 static void   *alloc_rfa(struct net_device *dev,void *ptr);
 139 static void    sun3_82586_rcv_int(struct net_device *dev);
 140 static void    sun3_82586_xmt_int(struct net_device *dev);
 141 static void    sun3_82586_rnr_int(struct net_device *dev);
 142
 143 struct priv
 144 {
 145         struct net_device_stats stats;
 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 struct net_device * __init sun3_82586_probe(int unit)
 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 ERR_PTR(-ENODEV);
 296         }
 297
 298         if (found)
 299                 return ERR_PTR(-ENODEV);
 300
 301         ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
 302         if (!ioaddr)
 303                 return ERR_PTR(-ENOMEM);
 304         found = 1;
 305
 306         dev = alloc_etherdev(sizeof(struct priv));
 307         if (!dev)
 308                 goto out;
 309         if (unit >= 0) {
 310                 sprintf(dev->name, "eth%d", unit);
 311                 netdev_boot_setup_check(dev);
 312         }
 313
 314         dev->irq = IE_IRQ;
 315         dev->base_addr = ioaddr;
 316         err = sun3_82586_probe1(dev, ioaddr);
 317         if (err)
 318                 goto out1;
 319         err = register_netdev(dev);
 320         if (err)
 321                 goto out2;
 322         return dev;
 323
 324 out2:
 325         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 326 out1:
 327         free_netdev(dev);
 328 out:
 329         iounmap((void __iomem *)ioaddr);
 330         return ERR_PTR(err);
 331 }
 332
 333 static const struct net_device_ops sun3_82586_netdev_ops = {
 334         .ndo_open               = sun3_82586_open,
 335         .ndo_stop               = sun3_82586_close,
 336         .ndo_start_xmit         = sun3_82586_send_packet,
 337         .ndo_set_multicast_list = set_multicast_list,
 338         .ndo_tx_timeout         = sun3_82586_timeout,
 339         .ndo_get_stats          = sun3_82586_get_stats,
 340         .ndo_validate_addr      = eth_validate_addr,
 341         .ndo_set_mac_address    = eth_mac_addr,
 342         .ndo_change_mtu         = eth_change_mtu,
 343 };
 344
 345 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
 346 {
 347         int i, size, retval;
 348
 349         if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
 350                 return -EBUSY;
 351
 352         /* copy in the ethernet address from the prom */
 353         for(i = 0; i < 6 ; i++)
 354              dev->dev_addr[i] = idprom->id_ethaddr[i];
 355
 356         printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
 357
 358         /*
 359          * check (or search) IO-Memory, 32K
 360          */
 361         size = 0x8000;
 362
 363         dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
 364         dev->mem_end = dev->mem_start + size;
 365
 366         if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
 367                 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
 368                 retval = -ENODEV;
 369                 goto out;
 370         }
 371         if(!check586(dev,(char *) dev->mem_start,size)) {
 372                 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
 373                 retval = -ENODEV;
 374                 goto out;
 375         }
 376
 377         ((struct priv *)netdev_priv(dev))->memtop =
 378                                         (char *)dvma_btov(dev->mem_start);
 379         ((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0);
 380         alloc586(dev);
 381
 382         /* set number of receive-buffs according to memsize */
 383         if(size == 0x2000)
 384                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 385                                                         NUM_RECV_BUFFS_8;
 386         else if(size == 0x4000)
 387                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 388                                                         NUM_RECV_BUFFS_16;
 389         else
 390                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 391                                                         NUM_RECV_BUFFS_32;
 392
 393         printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
 394
 395         dev->netdev_ops         = &sun3_82586_netdev_ops;
 396         dev->watchdog_timeo     = HZ/20;
 397
 398         dev->if_port            = 0;
 399         return 0;
 400 out:
 401         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 402         return retval;
 403 }
 404
 405
 406 static int init586(struct net_device *dev)
 407 {
 408         void *ptr;
 409         int i,result=0;
 410         struct priv *p = netdev_priv(dev);
 411         volatile struct configure_cmd_struct    *cfg_cmd;
 412         volatile struct iasetup_cmd_struct *ias_cmd;
 413         volatile struct tdr_cmd_struct *tdr_cmd;
 414         volatile struct mcsetup_cmd_struct *mc_cmd;
 415         struct netdev_hw_addr *ha;
 416         int num_addrs=netdev_mc_count(dev);
 417
 418         ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
 419
 420         cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
 421         cfg_cmd->cmd_status     = 0;
 422         cfg_cmd->cmd_cmd        = swab16(CMD_CONFIGURE | CMD_LAST);
 423         cfg_cmd->cmd_link       = 0xffff;
 424
 425         cfg_cmd->byte_cnt       = 0x0a; /* number of cfg bytes */
 426         cfg_cmd->fifo           = fifo; /* fifo-limit (8=tx:32/rx:64) */
 427         cfg_cmd->sav_bf         = 0x40; /* hold or discard bad recv frames (bit 7) */
 428         cfg_cmd->adr_len        = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
 429         cfg_cmd->priority       = 0x00;
 430         cfg_cmd->ifs            = 0x60;
 431         cfg_cmd->time_low       = 0x00;
 432         cfg_cmd->time_high      = 0xf2;
 433         cfg_cmd->promisc        = 0;
 434         if(dev->flags & IFF_ALLMULTI) {
 435                 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
 436                 if(num_addrs > len)     {
 437                         printk("%s: switching to promisc. mode\n",dev->name);
 438                         cfg_cmd->promisc = 1;
 439                 }
 440         }
 441         if(dev->flags&IFF_PROMISC)
 442                 cfg_cmd->promisc = 1;
 443         cfg_cmd->carr_coll      = 0x00;
 444
 445         p->scb->cbl_offset      = make16(cfg_cmd);
 446         p->scb->cmd_ruc         = 0;
 447
 448         p->scb->cmd_cuc         = CUC_START; /* cmd.-unit start */
 449         sun3_attn586();
 450
 451         WAIT_4_STAT_COMPL(cfg_cmd);
 452
 453         if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
 454         {
 455                 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
 456                 return 1;
 457         }
 458
 459         /*
 460          * individual address setup
 461          */
 462
 463         ias_cmd = (struct iasetup_cmd_struct *)ptr;
 464
 465         ias_cmd->cmd_status     = 0;
 466         ias_cmd->cmd_cmd        = swab16(CMD_IASETUP | CMD_LAST);
 467         ias_cmd->cmd_link       = 0xffff;
 468
 469         memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
 470
 471         p->scb->cbl_offset = make16(ias_cmd);
 472
 473         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 474         sun3_attn586();
 475
 476         WAIT_4_STAT_COMPL(ias_cmd);
 477
 478         if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
 479                 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
 480                 return 1;
 481         }
 482
 483         /*
 484          * TDR, wire check .. e.g. no resistor e.t.c
 485          */
 486
 487         tdr_cmd = (struct tdr_cmd_struct *)ptr;
 488
 489         tdr_cmd->cmd_status     = 0;
 490         tdr_cmd->cmd_cmd        = swab16(CMD_TDR | CMD_LAST);
 491         tdr_cmd->cmd_link       = 0xffff;
 492         tdr_cmd->status         = 0;
 493
 494         p->scb->cbl_offset = make16(tdr_cmd);
 495         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 496         sun3_attn586();
 497
 498         WAIT_4_STAT_COMPL(tdr_cmd);
 499
 500         if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
 501         {
 502                 printk("%s: Problems while running the TDR.\n",dev->name);
 503         }
 504         else
 505         {
 506                 DELAY_16(); /* wait for result */
 507                 result = swab16(tdr_cmd->status);
 508
 509                 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 510                 sun3_attn586(); /* ack the interrupts */
 511
 512                 if(result & TDR_LNK_OK)
 513                         ;
 514                 else if(result & TDR_XCVR_PRB)
 515                         printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
 516                 else if(result & TDR_ET_OPN)
 517                         printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 518                 else if(result & TDR_ET_SRT)
 519                 {
 520                         if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
 521                                 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 522                 }
 523                 else
 524                         printk("%s: TDR: Unknown status %04x\n",dev->name,result);
 525         }
 526
 527         /*
 528          * Multicast setup
 529          */
 530         if(num_addrs && !(dev->flags & IFF_PROMISC) )
 531         {
 532                 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
 533                 mc_cmd->cmd_status = 0;
 534                 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
 535                 mc_cmd->cmd_link = 0xffff;
 536                 mc_cmd->mc_cnt = swab16(num_addrs * 6);
 537
 538                 i = 0;
 539                 netdev_for_each_mc_addr(ha, dev)
 540                         memcpy((char *) mc_cmd->mc_list[i++],
 541                                ha->addr, ETH_ALEN);
 542
 543                 p->scb->cbl_offset = make16(mc_cmd);
 544                 p->scb->cmd_cuc = CUC_START;
 545                 sun3_attn586();
 546
 547                 WAIT_4_STAT_COMPL(mc_cmd);
 548
 549                 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
 550                         printk("%s: Can't apply multicast-address-list.\n",dev->name);
 551         }
 552
 553         /*
 554          * alloc nop/xmit-cmds
 555          */
 556 #if (NUM_XMIT_BUFFS == 1)
 557         for(i=0;i<2;i++)
 558         {
 559                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 560                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 561                 p->nop_cmds[i]->cmd_status      = 0;
 562                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 563                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 564         }
 565 #else
 566         for(i=0;i<NUM_XMIT_BUFFS;i++)
 567         {
 568                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 569                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 570                 p->nop_cmds[i]->cmd_status      = 0;
 571                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 572                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 573         }
 574 #endif
 575
 576         ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
 577
 578         /*
 579          * alloc xmit-buffs / init xmit_cmds
 580          */
 581         for(i=0;i<NUM_XMIT_BUFFS;i++)
 582         {
 583                 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
 584                 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
 585                 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
 586                 ptr = (char *) ptr + XMIT_BUFF_SIZE;
 587                 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
 588                 ptr = (char *) ptr + sizeof(struct tbd_struct);
 589                 if((void *)ptr > (void *)dev->mem_end)
 590                 {
 591                         printk("%s: not enough shared-mem for your configuration!\n",dev->name);
 592                         return 1;
 593                 }
 594                 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
 595                 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
 596                 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
 597                 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
 598                 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
 599                 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
 600                 p->xmit_buffs[i]->next = 0xffff;
 601                 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
 602         }
 603
 604         p->xmit_count = 0;
 605         p->xmit_last    = 0;
 606 #ifndef NO_NOPCOMMANDS
 607         p->nop_point    = 0;
 608 #endif
 609
 610          /*
 611                 * 'start transmitter'
 612                 */
 613 #ifndef NO_NOPCOMMANDS
 614         p->scb->cbl_offset = make16(p->nop_cmds[0]);
 615         p->scb->cmd_cuc = CUC_START;
 616         sun3_attn586();
 617         WAIT_4_SCB_CMD();
 618 #else
 619         p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
 620         p->xmit_cmds[0]->cmd_cmd        = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
 621 #endif
 622
 623         /*
 624          * ack. interrupts
 625          */
 626         p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 627         sun3_attn586();
 628         DELAY_16();
 629
 630         sun3_enaint();
 631         sun3_active();
 632
 633         return 0;
 634 }
 635
 636 /******************************************************
 637  * This is a helper routine for sun3_82586_rnr_int() and init586().
 638  * It sets up the Receive Frame Area (RFA).
 639  */
 640
 641 static void *alloc_rfa(struct net_device *dev,void *ptr)
 642 {
 643         volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
 644         volatile struct rbd_struct *rbd;
 645         int i;
 646         struct priv *p = netdev_priv(dev);
 647
 648         memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
 649         p->rfd_first = rfd;
 650
 651         for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
 652                 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
 653                 rfd[i].rbd_offset = 0xffff;
 654         }
 655         rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;         /* RU suspend */
 656
 657         ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
 658
 659         rbd = (struct rbd_struct *) ptr;
 660         ptr = (void *) (rbd + p->num_recv_buffs);
 661
 662          /* clr descriptors */
 663         memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
 664
 665         for(i=0;i<p->num_recv_buffs;i++)
 666         {
 667                 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
 668                 rbd[i].size = swab16(RECV_BUFF_SIZE);
 669                 rbd[i].buffer = make24(ptr);
 670                 ptr = (char *) ptr + RECV_BUFF_SIZE;
 671         }
 672
 673         p->rfd_top      = p->rfd_first;
 674         p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
 675
 676         p->scb->rfa_offset              = make16(p->rfd_first);
 677         p->rfd_first->rbd_offset        = make16(rbd);
 678
 679         return ptr;
 680 }
 681
 682
 683 /**************************************************
 684  * Interrupt Handler ...
 685  */
 686
 687 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
 688 {
 689         struct net_device *dev = dev_id;
 690         unsigned short stat;
 691         int cnt=0;
 692         struct priv *p;
 693
 694         if (!dev) {
 695                 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
 696                 return IRQ_NONE;
 697         }
 698         p = netdev_priv(dev);
 699
 700         if(debuglevel > 1)
 701                 printk("I");
 702
 703         WAIT_4_SCB_CMD(); /* wait for last command      */
 704
 705         while((stat=p->scb->cus & STAT_MASK))
 706         {
 707                 p->scb->cmd_cuc = stat;
 708                 sun3_attn586();
 709
 710                 if(stat & STAT_FR)       /* received a frame */
 711                         sun3_82586_rcv_int(dev);
 712
 713                 if(stat & STAT_RNR) /* RU went 'not ready' */
 714                 {
 715                         printk("(R)");
 716                         if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
 717                         {
 718                                 WAIT_4_SCB_CMD();
 719                                 p->scb->cmd_ruc = RUC_RESUME;
 720                                 sun3_attn586();
 721                                 WAIT_4_SCB_CMD_RUC();
 722                         }
 723                         else
 724                         {
 725                                 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
 726                                 sun3_82586_rnr_int(dev);
 727                         }
 728                 }
 729
 730                 if(stat & STAT_CX)              /* command with I-bit set complete */
 731                          sun3_82586_xmt_int(dev);
 732
 733 #ifndef NO_NOPCOMMANDS
 734                 if(stat & STAT_CNA)     /* CU went 'not ready' */
 735                 {
 736                         if(netif_running(dev))
 737                                 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
 738                 }
 739 #endif
 740
 741                 if(debuglevel > 1)
 742                         printk("%d",cnt++);
 743
 744                 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
 745                 if(p->scb->cmd_cuc)      /* timed out? */
 746                 {
 747                         printk("%s: Acknowledge timed out.\n",dev->name);
 748                         sun3_disint();
 749                         break;
 750                 }
 751         }
 752
 753         if(debuglevel > 1)
 754                 printk("i");
 755         return IRQ_HANDLED;
 756 }
 757
 758 /*******************************************************
 759  * receive-interrupt
 760  */
 761
 762 static void sun3_82586_rcv_int(struct net_device *dev)
 763 {
 764         int status,cnt=0;
 765         unsigned short totlen;
 766         struct sk_buff *skb;
 767         struct rbd_struct *rbd;
 768         struct priv *p = netdev_priv(dev);
 769
 770         if(debuglevel > 0)
 771                 printk("R");
 772
 773         for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
 774         {
 775                         rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
 776
 777                         if(status & RFD_OK) /* frame received without error? */
 778                         {
 779                                 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
 780                                 {
 781                                         totlen &= RBD_MASK; /* length of this frame */
 782                                         rbd->status = 0;
 783                                         skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
 784                                         if(skb != NULL)
 785                                         {
 786                                                 skb_reserve(skb,2);
 787                                                 skb_put(skb,totlen);
 788                                                 skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen);
 789                                                 skb->protocol=eth_type_trans(skb,dev);
 790                                                 netif_rx(skb);
 791                                                 p->stats.rx_packets++;
 792                                         }
 793                                         else
 794                                                 p->stats.rx_dropped++;
 795                                 }
 796                                 else
 797                                 {
 798                                         int rstat;
 799                                                  /* free all RBD's until RBD_LAST is set */
 800                                         totlen = 0;
 801                                         while(!((rstat=swab16(rbd->status)) & RBD_LAST))
 802                                         {
 803                                                 totlen += rstat & RBD_MASK;
 804                                                 if(!rstat)
 805                                                 {
 806                                                         printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
 807                                                         break;
 808                                                 }
 809                                                 rbd->status = 0;
 810                                                 rbd = (struct rbd_struct *) make32(rbd->next);
 811                                         }
 812                                         totlen += rstat & RBD_MASK;
 813                                         rbd->status = 0;
 814                                         printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
 815                                         p->stats.rx_dropped++;
 816                          }
 817                 }
 818                 else /* frame !(ok), only with 'save-bad-frames' */
 819                 {
 820                         printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
 821                         p->stats.rx_errors++;
 822                 }
 823                 p->rfd_top->stat_high = 0;
 824                 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
 825                 p->rfd_top->rbd_offset = 0xffff;
 826                 p->rfd_last->last = 0;                          /* delete RFD_SUSP      */
 827                 p->rfd_last = p->rfd_top;
 828                 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
 829                 p->scb->rfa_offset = make16(p->rfd_top);
 830
 831                 if(debuglevel > 0)
 832                         printk("%d",cnt++);
 833         }
 834
 835         if(automatic_resume)
 836         {
 837                 WAIT_4_SCB_CMD();
 838                 p->scb->cmd_ruc = RUC_RESUME;
 839                 sun3_attn586();
 840                 WAIT_4_SCB_CMD_RUC();
 841         }
 842
 843 #ifdef WAIT_4_BUSY
 844         {
 845                 int i;
 846                 for(i=0;i<1024;i++)
 847                 {
 848                         if(p->rfd_top->status)
 849                                 break;
 850                         DELAY_16();
 851                         if(i == 1023)
 852                                 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
 853                 }
 854         }
 855 #endif
 856
 857 #if 0
 858         if(!at_least_one)
 859         {
 860                 int i;
 861                 volatile struct rfd_struct *rfds=p->rfd_top;
 862                 volatile struct rbd_struct *rbds;
 863                 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
 864                 for(i=0;i< (p->num_recv_buffs+4);i++)
 865                 {
 866                         rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
 867                         printk("%04x:%04x ",rfds->status,rbds->status);
 868                         rfds = (struct rfd_struct *) make32(rfds->next);
 869                 }
 870                 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
 871                 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);
 872         }
 873         old_at_least = at_least_one;
 874 #endif
 875
 876         if(debuglevel > 0)
 877                 printk("r");
 878 }
 879
 880 /**********************************************************
 881  * handle 'Receiver went not ready'.
 882  */
 883
 884 static void sun3_82586_rnr_int(struct net_device *dev)
 885 {
 886         struct priv *p = netdev_priv(dev);
 887
 888         p->stats.rx_errors++;
 889
 890         WAIT_4_SCB_CMD();               /* wait for the last cmd, WAIT_4_FULLSTAT?? */
 891         p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
 892         sun3_attn586();
 893         WAIT_4_SCB_CMD_RUC();           /* wait for accept cmd. */
 894
 895         alloc_rfa(dev,(char *)p->rfd_first);
 896 /* maybe add a check here, before restarting the RU */
 897         startrecv586(dev); /* restart RU */
 898
 899         printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
 900
 901 }
 902
 903 /**********************************************************
 904  * handle xmit - interrupt
 905  */
 906
 907 static void sun3_82586_xmt_int(struct net_device *dev)
 908 {
 909         int status;
 910         struct priv *p = netdev_priv(dev);
 911
 912         if(debuglevel > 0)
 913                 printk("X");
 914
 915         status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
 916         if(!(status & STAT_COMPL))
 917                 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
 918
 919         if(status & STAT_OK)
 920         {
 921                 p->stats.tx_packets++;
 922                 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
 923         }
 924         else
 925         {
 926                 p->stats.tx_errors++;
 927                 if(status & TCMD_LATECOLL) {
 928                         printk("%s: late collision detected.\n",dev->name);
 929                         p->stats.collisions++;
 930                 }
 931                 else if(status & TCMD_NOCARRIER) {
 932                         p->stats.tx_carrier_errors++;
 933                         printk("%s: no carrier detected.\n",dev->name);
 934                 }
 935                 else if(status & TCMD_LOSTCTS)
 936                         printk("%s: loss of CTS detected.\n",dev->name);
 937                 else if(status & TCMD_UNDERRUN) {
 938                         p->stats.tx_fifo_errors++;
 939                         printk("%s: DMA underrun detected.\n",dev->name);
 940                 }
 941                 else if(status & TCMD_MAXCOLL) {
 942                         printk("%s: Max. collisions exceeded.\n",dev->name);
 943                         p->stats.collisions += 16;
 944                 }
 945         }
 946
 947 #if (NUM_XMIT_BUFFS > 1)
 948         if( (++p->xmit_last) == NUM_XMIT_BUFFS)
 949                 p->xmit_last = 0;
 950 #endif
 951         netif_wake_queue(dev);
 952 }
 953
 954 /***********************************************************
 955  * (re)start the receiver
 956  */
 957
 958 static void startrecv586(struct net_device *dev)
 959 {
 960         struct priv *p = netdev_priv(dev);
 961
 962         WAIT_4_SCB_CMD();
 963         WAIT_4_SCB_CMD_RUC();
 964         p->scb->rfa_offset = make16(p->rfd_first);
 965         p->scb->cmd_ruc = RUC_START;
 966         sun3_attn586();         /* start cmd. */
 967         WAIT_4_SCB_CMD_RUC();   /* wait for accept cmd. (no timeout!!) */
 968 }
 969
 970 static void sun3_82586_timeout(struct net_device *dev)
 971 {
 972         struct priv *p = netdev_priv(dev);
 973 #ifndef NO_NOPCOMMANDS
 974         if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
 975         {
 976                 netif_wake_queue(dev);
 977 #ifdef DEBUG
 978                 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
 979                 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);
 980 #endif
 981                 p->scb->cmd_cuc = CUC_ABORT;
 982                 sun3_attn586();
 983                 WAIT_4_SCB_CMD();
 984                 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
 985                 p->scb->cmd_cuc = CUC_START;
 986                 sun3_attn586();
 987                 WAIT_4_SCB_CMD();
 988                 dev->trans_start = jiffies; /* prevent tx timeout */
 989                 return 0;
 990         }
 991 #endif
 992         {
 993 #ifdef DEBUG
 994                 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
 995                 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
 996                 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
 997 #endif
 998                 sun3_82586_close(dev);
 999                 sun3_82586_open(dev);
1000         }
1001         dev->trans_start = jiffies; /* prevent tx timeout */
1002 }
1003
1004 /******************************************************
1005  * send frame
1006  */
1007
1008 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1009 {
1010         int len,i;
1011 #ifndef NO_NOPCOMMANDS
1012         int next_nop;
1013 #endif
1014         struct priv *p = netdev_priv(dev);
1015
1016         if(skb->len > XMIT_BUFF_SIZE)
1017         {
1018                 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1019                 return NETDEV_TX_OK;
1020         }
1021
1022         netif_stop_queue(dev);
1023
1024 #if(NUM_XMIT_BUFFS > 1)
1025         if(test_and_set_bit(0,(void *) &p->lock)) {
1026                 printk("%s: Queue was locked\n",dev->name);
1027                 return NETDEV_TX_BUSY;
1028         }
1029         else
1030 #endif
1031         {
1032                 len = skb->len;
1033                 if (len < ETH_ZLEN) {
1034                         memset((void *)p->xmit_cbuffs[p->xmit_count], 0,
1035                                ETH_ZLEN);
1036                         len = ETH_ZLEN;
1037                 }
1038                 skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len);
1039
1040 #if (NUM_XMIT_BUFFS == 1)
1041 #       ifdef NO_NOPCOMMANDS
1042
1043 #ifdef DEBUG
1044                 if(p->scb->cus & CU_ACTIVE)
1045                 {
1046                         printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1047                         printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1048                 }
1049 #endif
1050
1051                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1052                 for(i=0;i<16;i++)
1053                 {
1054                         p->xmit_cmds[0]->cmd_status = 0;
1055                         WAIT_4_SCB_CMD();
1056                         if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1057                                 p->scb->cmd_cuc = CUC_RESUME;
1058                         else
1059                         {
1060                                 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1061                                 p->scb->cmd_cuc = CUC_START;
1062                         }
1063
1064                         sun3_attn586();
1065                         if(!i)
1066                                 dev_kfree_skb(skb);
1067                         WAIT_4_SCB_CMD();
1068                         if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1069                                 break;
1070                         if(p->xmit_cmds[0]->cmd_status)
1071                                 break;
1072                         if(i==15)
1073                                 printk("%s: Can't start transmit-command.\n",dev->name);
1074                 }
1075 #       else
1076                 next_nop = (p->nop_point + 1) & 0x1;
1077                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1078
1079                 p->xmit_cmds[0]->cmd_link        = p->nop_cmds[next_nop]->cmd_link
1080                         = make16((p->nop_cmds[next_nop]));
1081                 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1082
1083                 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1084                 p->nop_point = next_nop;
1085                 dev_kfree_skb(skb);
1086 #       endif
1087 #else
1088                 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1089                 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1090                         next_nop = 0;
1091
1092                 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1093                 /* linkpointer of xmit-command already points to next nop cmd */
1094                 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1095                 p->nop_cmds[next_nop]->cmd_status = 0;
1096
1097                 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1098                 p->xmit_count = next_nop;
1099
1100                 {
1101                         unsigned long flags;
1102                         local_irq_save(flags);
1103                         if(p->xmit_count != p->xmit_last)
1104                                 netif_wake_queue(dev);
1105                         p->lock = 0;
1106                         local_irq_restore(flags);
1107                 }
1108                 dev_kfree_skb(skb);
1109 #endif
1110         }
1111         return NETDEV_TX_OK;
1112 }
1113
1114 /*******************************************
1115  * Someone wanna have the statistics
1116  */
1117
1118 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1119 {
1120         struct priv *p = netdev_priv(dev);
1121         unsigned short crc,aln,rsc,ovrn;
1122
1123         crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1124         p->scb->crc_errs = 0;
1125         aln = swab16(p->scb->aln_errs);
1126         p->scb->aln_errs = 0;
1127         rsc = swab16(p->scb->rsc_errs);
1128         p->scb->rsc_errs = 0;
1129         ovrn = swab16(p->scb->ovrn_errs);
1130         p->scb->ovrn_errs = 0;
1131
1132         p->stats.rx_crc_errors += crc;
1133         p->stats.rx_fifo_errors += ovrn;
1134         p->stats.rx_frame_errors += aln;
1135         p->stats.rx_dropped += rsc;
1136
1137         return &p->stats;
1138 }
1139
1140 /********************************************************
1141  * Set MC list ..
1142  */
1143
1144 static void set_multicast_list(struct net_device *dev)
1145 {
1146         netif_stop_queue(dev);
1147         sun3_disint();
1148         alloc586(dev);
1149         init586(dev);
1150         startrecv586(dev);
1151         sun3_enaint();
1152         netif_wake_queue(dev);
1153 }
1154
1155 #ifdef MODULE
1156 #error This code is not currently supported as a module
1157 static struct net_device *dev_sun3_82586;
1158
1159 int init_module(void)
1160 {
1161         dev_sun3_82586 = sun3_82586_probe(-1);
1162         if (IS_ERR(dev_sun3_82586))
1163                 return PTR_ERR(dev_sun3_82586);
1164         return 0;
1165 }
1166
1167 void cleanup_module(void)
1168 {
1169         unsigned long ioaddr = dev_sun3_82586->base_addr;
1170         unregister_netdev(dev_sun3_82586);
1171         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
1172         iounmap((void *)ioaddr);
1173         free_netdev(dev_sun3_82586);
1174 }
1175 #endif /* MODULE */
1176
1177 #if 0
1178 /*
1179  * DUMP .. we expect a not running CMD unit and enough space
1180  */
1181 void sun3_82586_dump(struct net_device *dev,void *ptr)
1182 {
1183         struct priv *p = netdev_priv(dev);
1184         struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1185         int i;
1186
1187         p->scb->cmd_cuc = CUC_ABORT;
1188         sun3_attn586();
1189         WAIT_4_SCB_CMD();
1190         WAIT_4_SCB_CMD_RUC();
1191
1192         dump_cmd->cmd_status = 0;
1193         dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1194         dump_cmd->dump_offset = make16((dump_cmd + 1));
1195         dump_cmd->cmd_link = 0xffff;
1196
1197         p->scb->cbl_offset = make16(dump_cmd);
1198         p->scb->cmd_cuc = CUC_START;
1199         sun3_attn586();
1200         WAIT_4_STAT_COMPL(dump_cmd);
1201
1202         if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1203                                 printk("%s: Can't get dump information.\n",dev->name);
1204
1205         for(i=0;i<170;i++) {
1206                 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1207                 if(i % 24 == 23)
1208                         printk("\n");
1209         }
1210         printk("\n");
1211 }
1212 #endif
1213
1214 MODULE_LICENSE("GPL");