git.oblomov.eu Git - linux-2.6/blob - drivers/net/sun3_82586.c

   1 /*
   2  * Sun3 i82586 Ethernet driver
   3  *
   4  * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net)
   5  *
   6  * Original copyright follows:
   7  * --------------------------
   8  *
   9  * net-3-driver for the NI5210 card (i82586 Ethernet chip)
  10  *
  11  * This is an extension to the Linux operating system, and is covered by the
  12  * same Gnu Public License that covers that work.
  13  *
  14  * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
  15  * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
  16  * --------------------------
  17  *
  18  * Consult ni52.c for further notes from the original driver.
  19  *
  20  * This incarnation currently supports the OBIO version of the i82586 chip
  21  * used in certain sun3 models.  It should be fairly doable to expand this
  22  * to support VME if I should every acquire such a board.
  23  *
  24  */
  25
  26 static int debuglevel = 0; /* debug-printk 0: off 1: a few 2: more */
  27 static int automatic_resume = 0; /* experimental .. better should be zero */
  28 static int rfdadd = 0; /* rfdadd=1 may be better for 8K MEM cards */
  29 static int fifo=0x8;    /* don't change */
  30
  31 #include <linux/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/string.h>
  34 #include <linux/errno.h>
  35 #include <linux/ioport.h>
  36 #include <linux/slab.h>
  37 #include <linux/interrupt.h>
  38 #include <linux/delay.h>
  39 #include <linux/init.h>
  40 #include <linux/bitops.h>
  41 #include <asm/io.h>
  42 #include <asm/idprom.h>
  43 #include <asm/machines.h>
  44 #include <asm/sun3mmu.h>
  45 #include <asm/dvma.h>
  46 #include <asm/byteorder.h>
  47
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include <linux/skbuff.h>
  51
  52 #include "sun3_82586.h"
  53
  54 #define DRV_NAME "sun3_82586"
  55
  56 #define DEBUG       /* debug on */
  57 #define SYSBUSVAL 0 /* 16 Bit */
  58 #define SUN3_82586_TOTAL_SIZE   PAGE_SIZE
  59
  60 #define sun3_attn586()  {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
  61 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
  62 #define sun3_disint()   {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
  63 #define sun3_enaint()   {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
  64 #define sun3_active()   {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
  65
  66 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
  67 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
  68 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
  69
  70 /******************* how to calculate the buffers *****************************
  71
  72   * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
  73   * --------------- in a different (more stable?) mode. Only in this mode it's
  74   *                 possible to configure the driver with 'NO_NOPCOMMANDS'
  75
  76 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
  77 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
  78 sizeof(rfd) = 24; sizeof(rbd) = 12;
  79 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
  80 sizeof(nop_cmd) = 8;
  81
  82   * if you don't know the driver, better do not change these values: */
  83
  84 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
  85 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
  86 #define NUM_XMIT_BUFFS 1    /* config for 32K shmem */
  87 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
  88 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
  89 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
  90 #define NO_NOPCOMMANDS      /* only possible with NUM_XMIT_BUFFS=1 */
  91
  92 /**************************************************************************/
  93
  94 /* different DELAYs */
  95 #define DELAY(x) mdelay(32 * x);
  96 #define DELAY_16(); { udelay(16); }
  97 #define DELAY_18(); { udelay(4); }
  98
  99 /* wait for command with timeout: */
 100 #define WAIT_4_SCB_CMD() \
 101 { int i; \
 102   for(i=0;i<16384;i++) { \
 103     if(!p->scb->cmd_cuc) break; \
 104     DELAY_18(); \
 105     if(i == 16383) { \
 106       printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
 107        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 108
 109 #define WAIT_4_SCB_CMD_RUC() { int i; \
 110   for(i=0;i<16384;i++) { \
 111     if(!p->scb->cmd_ruc) break; \
 112     DELAY_18(); \
 113     if(i == 16383) { \
 114       printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
 115        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
 116
 117 #define WAIT_4_STAT_COMPL(addr) { int i; \
 118    for(i=0;i<32767;i++) { \
 119      if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
 120      DELAY_16(); DELAY_16(); } }
 121
 122 static int     sun3_82586_probe1(struct net_device *dev,int ioaddr);
 123 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id);
 124 static int     sun3_82586_open(struct net_device *dev);
 125 static int     sun3_82586_close(struct net_device *dev);
 126 static int     sun3_82586_send_packet(struct sk_buff *,struct net_device *);
 127 static struct  net_device_stats *sun3_82586_get_stats(struct net_device *dev);
 128 static void    set_multicast_list(struct net_device *dev);
 129 static void    sun3_82586_timeout(struct net_device *dev);
 130 #if 0
 131 static void    sun3_82586_dump(struct net_device *,void *);
 132 #endif
 133
 134 /* helper-functions */
 135 static int     init586(struct net_device *dev);
 136 static int     check586(struct net_device *dev,char *where,unsigned size);
 137 static void    alloc586(struct net_device *dev);
 138 static void    startrecv586(struct net_device *dev);
 139 static void   *alloc_rfa(struct net_device *dev,void *ptr);
 140 static void    sun3_82586_rcv_int(struct net_device *dev);
 141 static void    sun3_82586_xmt_int(struct net_device *dev);
 142 static void    sun3_82586_rnr_int(struct net_device *dev);
 143
 144 struct priv
 145 {
 146         struct net_device_stats stats;
 147         unsigned long base;
 148         char *memtop;
 149         long int lock;
 150         int reseted;
 151         volatile struct rfd_struct      *rfd_last,*rfd_top,*rfd_first;
 152         volatile struct scp_struct      *scp;   /* volatile is important */
 153         volatile struct iscp_struct     *iscp;  /* volatile is important */
 154         volatile struct scb_struct      *scb;   /* volatile is important */
 155         volatile struct tbd_struct      *xmit_buffs[NUM_XMIT_BUFFS];
 156         volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
 157 #if (NUM_XMIT_BUFFS == 1)
 158         volatile struct nop_cmd_struct *nop_cmds[2];
 159 #else
 160         volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
 161 #endif
 162         volatile int            nop_point,num_recv_buffs;
 163         volatile char           *xmit_cbuffs[NUM_XMIT_BUFFS];
 164         volatile int            xmit_count,xmit_last;
 165 };
 166
 167 /**********************************************
 168  * close device
 169  */
 170 static int sun3_82586_close(struct net_device *dev)
 171 {
 172         free_irq(dev->irq, dev);
 173
 174         sun3_reset586(); /* the hard way to stop the receiver */
 175
 176         netif_stop_queue(dev);
 177
 178         return 0;
 179 }
 180
 181 /**********************************************
 182  * open device
 183  */
 184 static int sun3_82586_open(struct net_device *dev)
 185 {
 186         int ret;
 187
 188         sun3_disint();
 189         alloc586(dev);
 190         init586(dev);
 191         startrecv586(dev);
 192         sun3_enaint();
 193
 194         ret = request_irq(dev->irq, &sun3_82586_interrupt,0,dev->name,dev);
 195         if (ret)
 196         {
 197                 sun3_reset586();
 198                 return ret;
 199         }
 200
 201         netif_start_queue(dev);
 202
 203         return 0; /* most done by init */
 204 }
 205
 206 /**********************************************
 207  * Check to see if there's an 82586 out there.
 208  */
 209 static int check586(struct net_device *dev,char *where,unsigned size)
 210 {
 211         struct priv pb;
 212         struct priv *p = &pb;
 213         char *iscp_addr;
 214         int i;
 215
 216         p->base = (unsigned long) dvma_btov(0);
 217         p->memtop = (char *)dvma_btov((unsigned long)where);
 218         p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
 219         memset((char *)p->scp,0, sizeof(struct scp_struct));
 220         for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
 221                 if(((char *)p->scp)[i])
 222                         return 0;
 223         p->scp->sysbus = SYSBUSVAL;                             /* 1 = 8Bit-Bus, 0 = 16 Bit */
 224         if(p->scp->sysbus != SYSBUSVAL)
 225                 return 0;
 226
 227         iscp_addr = (char *)dvma_btov((unsigned long)where);
 228
 229         p->iscp = (struct iscp_struct *) iscp_addr;
 230         memset((char *)p->iscp,0, sizeof(struct iscp_struct));
 231
 232         p->scp->iscp = make24(p->iscp);
 233         p->iscp->busy = 1;
 234
 235         sun3_reset586();
 236         sun3_attn586();
 237         DELAY(1);       /* wait a while... */
 238
 239         if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
 240                 return 0;
 241
 242         return 1;
 243 }
 244
 245 /******************************************************************
 246  * set iscp at the right place, called by sun3_82586_probe1 and open586.
 247  */
 248 static void alloc586(struct net_device *dev)
 249 {
 250         struct priv *p = netdev_priv(dev);
 251
 252         sun3_reset586();
 253         DELAY(1);
 254
 255         p->scp  = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
 256         p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start);
 257         p->scb  = (struct scb_struct *)  ((char *)p->iscp + sizeof(struct iscp_struct));
 258
 259         memset((char *) p->iscp,0,sizeof(struct iscp_struct));
 260         memset((char *) p->scp ,0,sizeof(struct scp_struct));
 261
 262         p->scp->iscp = make24(p->iscp);
 263         p->scp->sysbus = SYSBUSVAL;
 264         p->iscp->scb_offset = make16(p->scb);
 265         p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
 266
 267         p->iscp->busy = 1;
 268         sun3_reset586();
 269         sun3_attn586();
 270
 271         DELAY(1);
 272
 273         if(p->iscp->busy)
 274                 printk("%s: Init-Problems (alloc).\n",dev->name);
 275
 276         p->reseted = 0;
 277
 278         memset((char *)p->scb,0,sizeof(struct scb_struct));
 279 }
 280
 281 struct net_device * __init sun3_82586_probe(int unit)
 282 {
 283         struct net_device *dev;
 284         unsigned long ioaddr;
 285         static int found = 0;
 286         int err = -ENOMEM;
 287
 288         /* check that this machine has an onboard 82586 */
 289         switch(idprom->id_machtype) {
 290         case SM_SUN3|SM_3_160:
 291         case SM_SUN3|SM_3_260:
 292                 /* these machines have 82586 */
 293                 break;
 294
 295         default:
 296                 return ERR_PTR(-ENODEV);
 297         }
 298
 299         if (found)
 300                 return ERR_PTR(-ENODEV);
 301
 302         ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
 303         if (!ioaddr)
 304                 return ERR_PTR(-ENOMEM);
 305         found = 1;
 306
 307         dev = alloc_etherdev(sizeof(struct priv));
 308         if (!dev)
 309                 goto out;
 310         if (unit >= 0) {
 311                 sprintf(dev->name, "eth%d", unit);
 312                 netdev_boot_setup_check(dev);
 313         }
 314
 315         dev->irq = IE_IRQ;
 316         dev->base_addr = ioaddr;
 317         err = sun3_82586_probe1(dev, ioaddr);
 318         if (err)
 319                 goto out1;
 320         err = register_netdev(dev);
 321         if (err)
 322                 goto out2;
 323         return dev;
 324
 325 out2:
 326         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 327 out1:
 328         free_netdev(dev);
 329 out:
 330         iounmap((void __iomem *)ioaddr);
 331         return ERR_PTR(err);
 332 }
 333
 334 static const struct net_device_ops sun3_82586_netdev_ops = {
 335         .ndo_open               = sun3_82586_open,
 336         .ndo_stop               = sun3_82586_close,
 337         .ndo_start_xmit         = sun3_82586_send_packet,
 338         .ndo_set_multicast_list = set_multicast_list,
 339         .ndo_tx_timeout         = sun3_82586_timeout,
 340         .ndo_get_stats          = sun3_82586_get_stats,
 341         .ndo_validate_addr      = eth_validate_addr,
 342         .ndo_set_mac_address    = eth_mac_addr,
 343         .ndo_change_mtu         = eth_change_mtu,
 344 };
 345
 346 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
 347 {
 348         int i, size, retval;
 349
 350         if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
 351                 return -EBUSY;
 352
 353         /* copy in the ethernet address from the prom */
 354         for(i = 0; i < 6 ; i++)
 355              dev->dev_addr[i] = idprom->id_ethaddr[i];
 356
 357         printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
 358
 359         /*
 360          * check (or search) IO-Memory, 32K
 361          */
 362         size = 0x8000;
 363
 364         dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
 365         dev->mem_end = dev->mem_start + size;
 366
 367         if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
 368                 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
 369                 retval = -ENODEV;
 370                 goto out;
 371         }
 372         if(!check586(dev,(char *) dev->mem_start,size)) {
 373                 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
 374                 retval = -ENODEV;
 375                 goto out;
 376         }
 377
 378         ((struct priv *)netdev_priv(dev))->memtop =
 379                                         (char *)dvma_btov(dev->mem_start);
 380         ((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0);
 381         alloc586(dev);
 382
 383         /* set number of receive-buffs according to memsize */
 384         if(size == 0x2000)
 385                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 386                                                         NUM_RECV_BUFFS_8;
 387         else if(size == 0x4000)
 388                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 389                                                         NUM_RECV_BUFFS_16;
 390         else
 391                 ((struct priv *)netdev_priv(dev))->num_recv_buffs =
 392                                                         NUM_RECV_BUFFS_32;
 393
 394         printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
 395
 396         dev->netdev_ops         = &sun3_82586_netdev_ops;
 397         dev->watchdog_timeo     = HZ/20;
 398
 399         dev->if_port            = 0;
 400         return 0;
 401 out:
 402         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
 403         return retval;
 404 }
 405
 406
 407 static int init586(struct net_device *dev)
 408 {
 409         void *ptr;
 410         int i,result=0;
 411         struct priv *p = netdev_priv(dev);
 412         volatile struct configure_cmd_struct    *cfg_cmd;
 413         volatile struct iasetup_cmd_struct *ias_cmd;
 414         volatile struct tdr_cmd_struct *tdr_cmd;
 415         volatile struct mcsetup_cmd_struct *mc_cmd;
 416         struct dev_mc_list *dmi=dev->mc_list;
 417         int num_addrs=dev->mc_count;
 418
 419         ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
 420
 421         cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
 422         cfg_cmd->cmd_status     = 0;
 423         cfg_cmd->cmd_cmd        = swab16(CMD_CONFIGURE | CMD_LAST);
 424         cfg_cmd->cmd_link       = 0xffff;
 425
 426         cfg_cmd->byte_cnt       = 0x0a; /* number of cfg bytes */
 427         cfg_cmd->fifo           = fifo; /* fifo-limit (8=tx:32/rx:64) */
 428         cfg_cmd->sav_bf         = 0x40; /* hold or discard bad recv frames (bit 7) */
 429         cfg_cmd->adr_len        = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
 430         cfg_cmd->priority       = 0x00;
 431         cfg_cmd->ifs            = 0x60;
 432         cfg_cmd->time_low       = 0x00;
 433         cfg_cmd->time_high      = 0xf2;
 434         cfg_cmd->promisc        = 0;
 435         if(dev->flags & IFF_ALLMULTI) {
 436                 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
 437                 if(num_addrs > len)     {
 438                         printk("%s: switching to promisc. mode\n",dev->name);
 439                         cfg_cmd->promisc = 1;
 440                 }
 441         }
 442         if(dev->flags&IFF_PROMISC)
 443                 cfg_cmd->promisc = 1;
 444         cfg_cmd->carr_coll      = 0x00;
 445
 446         p->scb->cbl_offset      = make16(cfg_cmd);
 447         p->scb->cmd_ruc         = 0;
 448
 449         p->scb->cmd_cuc         = CUC_START; /* cmd.-unit start */
 450         sun3_attn586();
 451
 452         WAIT_4_STAT_COMPL(cfg_cmd);
 453
 454         if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
 455         {
 456                 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
 457                 return 1;
 458         }
 459
 460         /*
 461          * individual address setup
 462          */
 463
 464         ias_cmd = (struct iasetup_cmd_struct *)ptr;
 465
 466         ias_cmd->cmd_status     = 0;
 467         ias_cmd->cmd_cmd        = swab16(CMD_IASETUP | CMD_LAST);
 468         ias_cmd->cmd_link       = 0xffff;
 469
 470         memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
 471
 472         p->scb->cbl_offset = make16(ias_cmd);
 473
 474         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 475         sun3_attn586();
 476
 477         WAIT_4_STAT_COMPL(ias_cmd);
 478
 479         if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
 480                 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
 481                 return 1;
 482         }
 483
 484         /*
 485          * TDR, wire check .. e.g. no resistor e.t.c
 486          */
 487
 488         tdr_cmd = (struct tdr_cmd_struct *)ptr;
 489
 490         tdr_cmd->cmd_status     = 0;
 491         tdr_cmd->cmd_cmd        = swab16(CMD_TDR | CMD_LAST);
 492         tdr_cmd->cmd_link       = 0xffff;
 493         tdr_cmd->status         = 0;
 494
 495         p->scb->cbl_offset = make16(tdr_cmd);
 496         p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
 497         sun3_attn586();
 498
 499         WAIT_4_STAT_COMPL(tdr_cmd);
 500
 501         if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
 502         {
 503                 printk("%s: Problems while running the TDR.\n",dev->name);
 504         }
 505         else
 506         {
 507                 DELAY_16(); /* wait for result */
 508                 result = swab16(tdr_cmd->status);
 509
 510                 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 511                 sun3_attn586(); /* ack the interrupts */
 512
 513                 if(result & TDR_LNK_OK)
 514                         ;
 515                 else if(result & TDR_XCVR_PRB)
 516                         printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
 517                 else if(result & TDR_ET_OPN)
 518                         printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 519                 else if(result & TDR_ET_SRT)
 520                 {
 521                         if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
 522                                 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
 523                 }
 524                 else
 525                         printk("%s: TDR: Unknown status %04x\n",dev->name,result);
 526         }
 527
 528         /*
 529          * Multicast setup
 530          */
 531         if(num_addrs && !(dev->flags & IFF_PROMISC) )
 532         {
 533                 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
 534                 mc_cmd->cmd_status = 0;
 535                 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
 536                 mc_cmd->cmd_link = 0xffff;
 537                 mc_cmd->mc_cnt = swab16(num_addrs * 6);
 538
 539                 for(i=0;i<num_addrs;i++,dmi=dmi->next)
 540                         memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
 541
 542                 p->scb->cbl_offset = make16(mc_cmd);
 543                 p->scb->cmd_cuc = CUC_START;
 544                 sun3_attn586();
 545
 546                 WAIT_4_STAT_COMPL(mc_cmd);
 547
 548                 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
 549                         printk("%s: Can't apply multicast-address-list.\n",dev->name);
 550         }
 551
 552         /*
 553          * alloc nop/xmit-cmds
 554          */
 555 #if (NUM_XMIT_BUFFS == 1)
 556         for(i=0;i<2;i++)
 557         {
 558                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 559                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 560                 p->nop_cmds[i]->cmd_status      = 0;
 561                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 562                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 563         }
 564 #else
 565         for(i=0;i<NUM_XMIT_BUFFS;i++)
 566         {
 567                 p->nop_cmds[i]                  = (struct nop_cmd_struct *)ptr;
 568                 p->nop_cmds[i]->cmd_cmd         = swab16(CMD_NOP);
 569                 p->nop_cmds[i]->cmd_status      = 0;
 570                 p->nop_cmds[i]->cmd_link        = make16((p->nop_cmds[i]));
 571                 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
 572         }
 573 #endif
 574
 575         ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
 576
 577         /*
 578          * alloc xmit-buffs / init xmit_cmds
 579          */
 580         for(i=0;i<NUM_XMIT_BUFFS;i++)
 581         {
 582                 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
 583                 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
 584                 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
 585                 ptr = (char *) ptr + XMIT_BUFF_SIZE;
 586                 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
 587                 ptr = (char *) ptr + sizeof(struct tbd_struct);
 588                 if((void *)ptr > (void *)dev->mem_end)
 589                 {
 590                         printk("%s: not enough shared-mem for your configuration!\n",dev->name);
 591                         return 1;
 592                 }
 593                 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
 594                 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
 595                 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
 596                 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
 597                 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
 598                 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
 599                 p->xmit_buffs[i]->next = 0xffff;
 600                 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
 601         }
 602
 603         p->xmit_count = 0;
 604         p->xmit_last    = 0;
 605 #ifndef NO_NOPCOMMANDS
 606         p->nop_point    = 0;
 607 #endif
 608
 609          /*
 610                 * 'start transmitter'
 611                 */
 612 #ifndef NO_NOPCOMMANDS
 613         p->scb->cbl_offset = make16(p->nop_cmds[0]);
 614         p->scb->cmd_cuc = CUC_START;
 615         sun3_attn586();
 616         WAIT_4_SCB_CMD();
 617 #else
 618         p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
 619         p->xmit_cmds[0]->cmd_cmd        = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
 620 #endif
 621
 622         /*
 623          * ack. interrupts
 624          */
 625         p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
 626         sun3_attn586();
 627         DELAY_16();
 628
 629         sun3_enaint();
 630         sun3_active();
 631
 632         return 0;
 633 }
 634
 635 /******************************************************
 636  * This is a helper routine for sun3_82586_rnr_int() and init586().
 637  * It sets up the Receive Frame Area (RFA).
 638  */
 639
 640 static void *alloc_rfa(struct net_device *dev,void *ptr)
 641 {
 642         volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
 643         volatile struct rbd_struct *rbd;
 644         int i;
 645         struct priv *p = netdev_priv(dev);
 646
 647         memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
 648         p->rfd_first = rfd;
 649
 650         for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
 651                 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
 652                 rfd[i].rbd_offset = 0xffff;
 653         }
 654         rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;         /* RU suspend */
 655
 656         ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
 657
 658         rbd = (struct rbd_struct *) ptr;
 659         ptr = (void *) (rbd + p->num_recv_buffs);
 660
 661          /* clr descriptors */
 662         memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
 663
 664         for(i=0;i<p->num_recv_buffs;i++)
 665         {
 666                 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
 667                 rbd[i].size = swab16(RECV_BUFF_SIZE);
 668                 rbd[i].buffer = make24(ptr);
 669                 ptr = (char *) ptr + RECV_BUFF_SIZE;
 670         }
 671
 672         p->rfd_top      = p->rfd_first;
 673         p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
 674
 675         p->scb->rfa_offset              = make16(p->rfd_first);
 676         p->rfd_first->rbd_offset        = make16(rbd);
 677
 678         return ptr;
 679 }
 680
 681
 682 /**************************************************
 683  * Interrupt Handler ...
 684  */
 685
 686 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
 687 {
 688         struct net_device *dev = dev_id;
 689         unsigned short stat;
 690         int cnt=0;
 691         struct priv *p;
 692
 693         if (!dev) {
 694                 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
 695                 return IRQ_NONE;
 696         }
 697         p = netdev_priv(dev);
 698
 699         if(debuglevel > 1)
 700                 printk("I");
 701
 702         WAIT_4_SCB_CMD(); /* wait for last command      */
 703
 704         while((stat=p->scb->cus & STAT_MASK))
 705         {
 706                 p->scb->cmd_cuc = stat;
 707                 sun3_attn586();
 708
 709                 if(stat & STAT_FR)       /* received a frame */
 710                         sun3_82586_rcv_int(dev);
 711
 712                 if(stat & STAT_RNR) /* RU went 'not ready' */
 713                 {
 714                         printk("(R)");
 715                         if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
 716                         {
 717                                 WAIT_4_SCB_CMD();
 718                                 p->scb->cmd_ruc = RUC_RESUME;
 719                                 sun3_attn586();
 720                                 WAIT_4_SCB_CMD_RUC();
 721                         }
 722                         else
 723                         {
 724                                 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
 725                                 sun3_82586_rnr_int(dev);
 726                         }
 727                 }
 728
 729                 if(stat & STAT_CX)              /* command with I-bit set complete */
 730                          sun3_82586_xmt_int(dev);
 731
 732 #ifndef NO_NOPCOMMANDS
 733                 if(stat & STAT_CNA)     /* CU went 'not ready' */
 734                 {
 735                         if(netif_running(dev))
 736                                 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
 737                 }
 738 #endif
 739
 740                 if(debuglevel > 1)
 741                         printk("%d",cnt++);
 742
 743                 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
 744                 if(p->scb->cmd_cuc)      /* timed out? */
 745                 {
 746                         printk("%s: Acknowledge timed out.\n",dev->name);
 747                         sun3_disint();
 748                         break;
 749                 }
 750         }
 751
 752         if(debuglevel > 1)
 753                 printk("i");
 754         return IRQ_HANDLED;
 755 }
 756
 757 /*******************************************************
 758  * receive-interrupt
 759  */
 760
 761 static void sun3_82586_rcv_int(struct net_device *dev)
 762 {
 763         int status,cnt=0;
 764         unsigned short totlen;
 765         struct sk_buff *skb;
 766         struct rbd_struct *rbd;
 767         struct priv *p = netdev_priv(dev);
 768
 769         if(debuglevel > 0)
 770                 printk("R");
 771
 772         for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
 773         {
 774                         rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
 775
 776                         if(status & RFD_OK) /* frame received without error? */
 777                         {
 778                                 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
 779                                 {
 780                                         totlen &= RBD_MASK; /* length of this frame */
 781                                         rbd->status = 0;
 782                                         skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
 783                                         if(skb != NULL)
 784                                         {
 785                                                 skb_reserve(skb,2);
 786                                                 skb_put(skb,totlen);
 787                                                 skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen);
 788                                                 skb->protocol=eth_type_trans(skb,dev);
 789                                                 netif_rx(skb);
 790                                                 p->stats.rx_packets++;
 791                                         }
 792                                         else
 793                                                 p->stats.rx_dropped++;
 794                                 }
 795                                 else
 796                                 {
 797                                         int rstat;
 798                                                  /* free all RBD's until RBD_LAST is set */
 799                                         totlen = 0;
 800                                         while(!((rstat=swab16(rbd->status)) & RBD_LAST))
 801                                         {
 802                                                 totlen += rstat & RBD_MASK;
 803                                                 if(!rstat)
 804                                                 {
 805                                                         printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
 806                                                         break;
 807                                                 }
 808                                                 rbd->status = 0;
 809                                                 rbd = (struct rbd_struct *) make32(rbd->next);
 810                                         }
 811                                         totlen += rstat & RBD_MASK;
 812                                         rbd->status = 0;
 813                                         printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
 814                                         p->stats.rx_dropped++;
 815                          }
 816                 }
 817                 else /* frame !(ok), only with 'save-bad-frames' */
 818                 {
 819                         printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
 820                         p->stats.rx_errors++;
 821                 }
 822                 p->rfd_top->stat_high = 0;
 823                 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
 824                 p->rfd_top->rbd_offset = 0xffff;
 825                 p->rfd_last->last = 0;                          /* delete RFD_SUSP      */
 826                 p->rfd_last = p->rfd_top;
 827                 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
 828                 p->scb->rfa_offset = make16(p->rfd_top);
 829
 830                 if(debuglevel > 0)
 831                         printk("%d",cnt++);
 832         }
 833
 834         if(automatic_resume)
 835         {
 836                 WAIT_4_SCB_CMD();
 837                 p->scb->cmd_ruc = RUC_RESUME;
 838                 sun3_attn586();
 839                 WAIT_4_SCB_CMD_RUC();
 840         }
 841
 842 #ifdef WAIT_4_BUSY
 843         {
 844                 int i;
 845                 for(i=0;i<1024;i++)
 846                 {
 847                         if(p->rfd_top->status)
 848                                 break;
 849                         DELAY_16();
 850                         if(i == 1023)
 851                                 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
 852                 }
 853         }
 854 #endif
 855
 856 #if 0
 857         if(!at_least_one)
 858         {
 859                 int i;
 860                 volatile struct rfd_struct *rfds=p->rfd_top;
 861                 volatile struct rbd_struct *rbds;
 862                 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
 863                 for(i=0;i< (p->num_recv_buffs+4);i++)
 864                 {
 865                         rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
 866                         printk("%04x:%04x ",rfds->status,rbds->status);
 867                         rfds = (struct rfd_struct *) make32(rfds->next);
 868                 }
 869                 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
 870                 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);
 871         }
 872         old_at_least = at_least_one;
 873 #endif
 874
 875         if(debuglevel > 0)
 876                 printk("r");
 877 }
 878
 879 /**********************************************************
 880  * handle 'Receiver went not ready'.
 881  */
 882
 883 static void sun3_82586_rnr_int(struct net_device *dev)
 884 {
 885         struct priv *p = netdev_priv(dev);
 886
 887         p->stats.rx_errors++;
 888
 889         WAIT_4_SCB_CMD();               /* wait for the last cmd, WAIT_4_FULLSTAT?? */
 890         p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
 891         sun3_attn586();
 892         WAIT_4_SCB_CMD_RUC();           /* wait for accept cmd. */
 893
 894         alloc_rfa(dev,(char *)p->rfd_first);
 895 /* maybe add a check here, before restarting the RU */
 896         startrecv586(dev); /* restart RU */
 897
 898         printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
 899
 900 }
 901
 902 /**********************************************************
 903  * handle xmit - interrupt
 904  */
 905
 906 static void sun3_82586_xmt_int(struct net_device *dev)
 907 {
 908         int status;
 909         struct priv *p = netdev_priv(dev);
 910
 911         if(debuglevel > 0)
 912                 printk("X");
 913
 914         status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
 915         if(!(status & STAT_COMPL))
 916                 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
 917
 918         if(status & STAT_OK)
 919         {
 920                 p->stats.tx_packets++;
 921                 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
 922         }
 923         else
 924         {
 925                 p->stats.tx_errors++;
 926                 if(status & TCMD_LATECOLL) {
 927                         printk("%s: late collision detected.\n",dev->name);
 928                         p->stats.collisions++;
 929                 }
 930                 else if(status & TCMD_NOCARRIER) {
 931                         p->stats.tx_carrier_errors++;
 932                         printk("%s: no carrier detected.\n",dev->name);
 933                 }
 934                 else if(status & TCMD_LOSTCTS)
 935                         printk("%s: loss of CTS detected.\n",dev->name);
 936                 else if(status & TCMD_UNDERRUN) {
 937                         p->stats.tx_fifo_errors++;
 938                         printk("%s: DMA underrun detected.\n",dev->name);
 939                 }
 940                 else if(status & TCMD_MAXCOLL) {
 941                         printk("%s: Max. collisions exceeded.\n",dev->name);
 942                         p->stats.collisions += 16;
 943                 }
 944         }
 945
 946 #if (NUM_XMIT_BUFFS > 1)
 947         if( (++p->xmit_last) == NUM_XMIT_BUFFS)
 948                 p->xmit_last = 0;
 949 #endif
 950         netif_wake_queue(dev);
 951 }
 952
 953 /***********************************************************
 954  * (re)start the receiver
 955  */
 956
 957 static void startrecv586(struct net_device *dev)
 958 {
 959         struct priv *p = netdev_priv(dev);
 960
 961         WAIT_4_SCB_CMD();
 962         WAIT_4_SCB_CMD_RUC();
 963         p->scb->rfa_offset = make16(p->rfd_first);
 964         p->scb->cmd_ruc = RUC_START;
 965         sun3_attn586();         /* start cmd. */
 966         WAIT_4_SCB_CMD_RUC();   /* wait for accept cmd. (no timeout!!) */
 967 }
 968
 969 static void sun3_82586_timeout(struct net_device *dev)
 970 {
 971         struct priv *p = netdev_priv(dev);
 972 #ifndef NO_NOPCOMMANDS
 973         if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
 974         {
 975                 netif_wake_queue(dev);
 976 #ifdef DEBUG
 977                 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
 978                 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);
 979 #endif
 980                 p->scb->cmd_cuc = CUC_ABORT;
 981                 sun3_attn586();
 982                 WAIT_4_SCB_CMD();
 983                 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
 984                 p->scb->cmd_cuc = CUC_START;
 985                 sun3_attn586();
 986                 WAIT_4_SCB_CMD();
 987                 dev->trans_start = jiffies;
 988                 return 0;
 989         }
 990 #endif
 991         {
 992 #ifdef DEBUG
 993                 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
 994                 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
 995                 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
 996 #endif
 997                 sun3_82586_close(dev);
 998                 sun3_82586_open(dev);
 999         }
1000         dev->trans_start = jiffies;
1001 }
1002
1003 /******************************************************
1004  * send frame
1005  */
1006
1007 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1008 {
1009         int len,i;
1010 #ifndef NO_NOPCOMMANDS
1011         int next_nop;
1012 #endif
1013         struct priv *p = netdev_priv(dev);
1014
1015         if(skb->len > XMIT_BUFF_SIZE)
1016         {
1017                 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1018                 return 0;
1019         }
1020
1021         netif_stop_queue(dev);
1022
1023 #if(NUM_XMIT_BUFFS > 1)
1024         if(test_and_set_bit(0,(void *) &p->lock)) {
1025                 printk("%s: Queue was locked\n",dev->name);
1026                 return 1;
1027         }
1028         else
1029 #endif
1030         {
1031                 len = skb->len;
1032                 if (len < ETH_ZLEN) {
1033                         memset((void *)p->xmit_cbuffs[p->xmit_count], 0,
1034                                ETH_ZLEN);
1035                         len = ETH_ZLEN;
1036                 }
1037                 skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len);
1038
1039 #if (NUM_XMIT_BUFFS == 1)
1040 #       ifdef NO_NOPCOMMANDS
1041
1042 #ifdef DEBUG
1043                 if(p->scb->cus & CU_ACTIVE)
1044                 {
1045                         printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1046                         printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1047                 }
1048 #endif
1049
1050                 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1051                 for(i=0;i<16;i++)
1052                 {
1053                         p->xmit_cmds[0]->cmd_status = 0;
1054                         WAIT_4_SCB_CMD();
1055                         if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1056                                 p->scb->cmd_cuc = CUC_RESUME;
1057                         else
1058                         {
1059                                 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1060                                 p->scb->cmd_cuc = CUC_START;
1061                         }
1062
1063                         sun3_attn586();
1064                         dev->trans_start = jiffies;
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                 dev->trans_start = jiffies;
1085                 p->nop_point = next_nop;
1086                 dev_kfree_skb(skb);
1087 #       endif
1088 #else
1089                 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1090                 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1091                         next_nop = 0;
1092
1093                 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1094                 /* linkpointer of xmit-command already points to next nop cmd */
1095                 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1096                 p->nop_cmds[next_nop]->cmd_status = 0;
1097
1098                 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1099                 dev->trans_start = jiffies;
1100                 p->xmit_count = next_nop;
1101
1102                 {
1103                         unsigned long flags;
1104                         local_irq_save(flags);
1105                         if(p->xmit_count != p->xmit_last)
1106                                 netif_wake_queue(dev);
1107                         p->lock = 0;
1108                         local_irq_restore(flags);
1109                 }
1110                 dev_kfree_skb(skb);
1111 #endif
1112         }
1113         return 0;
1114 }
1115
1116 /*******************************************
1117  * Someone wanna have the statistics
1118  */
1119
1120 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1121 {
1122         struct priv *p = netdev_priv(dev);
1123         unsigned short crc,aln,rsc,ovrn;
1124
1125         crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1126         p->scb->crc_errs = 0;
1127         aln = swab16(p->scb->aln_errs);
1128         p->scb->aln_errs = 0;
1129         rsc = swab16(p->scb->rsc_errs);
1130         p->scb->rsc_errs = 0;
1131         ovrn = swab16(p->scb->ovrn_errs);
1132         p->scb->ovrn_errs = 0;
1133
1134         p->stats.rx_crc_errors += crc;
1135         p->stats.rx_fifo_errors += ovrn;
1136         p->stats.rx_frame_errors += aln;
1137         p->stats.rx_dropped += rsc;
1138
1139         return &p->stats;
1140 }
1141
1142 /********************************************************
1143  * Set MC list ..
1144  */
1145
1146 static void set_multicast_list(struct net_device *dev)
1147 {
1148         netif_stop_queue(dev);
1149         sun3_disint();
1150         alloc586(dev);
1151         init586(dev);
1152         startrecv586(dev);
1153         sun3_enaint();
1154         netif_wake_queue(dev);
1155 }
1156
1157 #ifdef MODULE
1158 #error This code is not currently supported as a module
1159 static struct net_device *dev_sun3_82586;
1160
1161 int init_module(void)
1162 {
1163         dev_sun3_82586 = sun3_82586_probe(-1);
1164         if (IS_ERR(dev_sun3_82586))
1165                 return PTR_ERR(dev_sun3_82586);
1166         return 0;
1167 }
1168
1169 void cleanup_module(void)
1170 {
1171         unsigned long ioaddr = dev_sun3_82586->base_addr;
1172         unregister_netdev(dev_sun3_82586);
1173         release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
1174         iounmap((void *)ioaddr);
1175         free_netdev(dev_sun3_82586);
1176 }
1177 #endif /* MODULE */
1178
1179 #if 0
1180 /*
1181  * DUMP .. we expect a not running CMD unit and enough space
1182  */
1183 void sun3_82586_dump(struct net_device *dev,void *ptr)
1184 {
1185         struct priv *p = netdev_priv(dev);
1186         struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1187         int i;
1188
1189         p->scb->cmd_cuc = CUC_ABORT;
1190         sun3_attn586();
1191         WAIT_4_SCB_CMD();
1192         WAIT_4_SCB_CMD_RUC();
1193
1194         dump_cmd->cmd_status = 0;
1195         dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1196         dump_cmd->dump_offset = make16((dump_cmd + 1));
1197         dump_cmd->cmd_link = 0xffff;
1198
1199         p->scb->cbl_offset = make16(dump_cmd);
1200         p->scb->cmd_cuc = CUC_START;
1201         sun3_attn586();
1202         WAIT_4_STAT_COMPL(dump_cmd);
1203
1204         if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1205                                 printk("%s: Can't get dump information.\n",dev->name);
1206
1207         for(i=0;i<170;i++) {
1208                 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1209                 if(i % 24 == 23)
1210                         printk("\n");
1211         }
1212         printk("\n");
1213 }
1214 #endif
1215
1216 MODULE_LICENSE("GPL");