drivers/net/ni65.c

   1 /*
   2  * ni6510 (am7990 'lance' chip) driver for Linux-net-3
   3  * BETAcode v0.71 (96/09/29) for 2.0.0 (or later)
   4  * copyrights (c) 1994,1995,1996 by M.Hipp
   5  *
   6  * This driver can handle the old ni6510 board and the newer ni6510
   7  * EtherBlaster. (probably it also works with every full NE2100
   8  * compatible card)
   9  *
  10  * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7
  11  *
  12  * This is an extension to the Linux operating system, and is covered by the
  13  * same GNU General Public License that covers the Linux-kernel.
  14  *
  15  * comments/bugs/suggestions can be sent to:
  16  *   Michael Hipp
  17  *   email: hippm@informatik.uni-tuebingen.de
  18  *
  19  * sources:
  20  *   some things are from the 'ni6510-packet-driver for dos by Russ Nelson'
  21  *   and from the original drivers by D.Becker
  22  *
  23  * known problems:
  24  *   - on some PCI boards (including my own) the card/board/ISA-bridge has
  25  *     problems with bus master DMA. This results in lotsa overruns.
  26  *     It may help to '#define RCV_PARANOIA_CHECK' or try to #undef
  27  *     the XMT and RCV_VIA_SKB option .. this reduces driver performance.
  28  *     Or just play with your BIOS options to optimize ISA-DMA access.
  29  *     Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE
  30  *     defines -> please report me your experience then
  31  *   - Harald reported for ASUS SP3G mainboards, that you should use
  32  *     the 'optimal settings' from the user's manual on page 3-12!
  33  *
  34  * credits:
  35  *   thanx to Jason Sullivan for sending me a ni6510 card!
  36  *   lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig
  37  *
  38  * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB)
  39  *    average: FTP -> 8384421 bytes received in 8.5 seconds
  40  *           (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS)
  41  *    peak: FTP -> 8384421 bytes received in 7.5 seconds
  42  *           (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS)
  43  */
  44
  45 /*
  46  * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK)
  47  * 96.Sept.29: virt_to_bus stuff added for new memory modell
  48  * 96.April.29: Added Harald Koenig's Patches (MH)
  49  * 96.April.13: enhanced error handling .. more tests (MH)
  50  * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH)
  51  * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH)
  52  * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH)
  53  *            hopefully no more 16MB limit
  54  *
  55  * 95.Nov.18: multicast tweaked (AC).
  56  *
  57  * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
  58  *
  59  * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff  (MH)
  60  */
  61
  62 #include <linux/kernel.h>
  63 #include <linux/string.h>
  64 #include <linux/errno.h>
  65 #include <linux/ioport.h>
  66 #include <linux/slab.h>
  67 #include <linux/interrupt.h>
  68 #include <linux/delay.h>
  69 #include <linux/init.h>
  70 #include <linux/netdevice.h>
  71 #include <linux/etherdevice.h>
  72 #include <linux/skbuff.h>
  73 #include <linux/module.h>
  74 #include <linux/bitops.h>
  75
  76 #include <asm/io.h>
  77 #include <asm/dma.h>
  78
  79 #include "ni65.h"
  80
  81 /*
  82  * the current setting allows an acceptable performance
  83  * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in
  84  * the header of this file
  85  * 'invert' the defines for max. performance. This may cause DMA problems
  86  * on some boards (e.g on my ASUS SP3G)
  87  */
  88 #undef XMT_VIA_SKB
  89 #undef RCV_VIA_SKB
  90 #define RCV_PARANOIA_CHECK
  91
  92 #define MID_PERFORMANCE
  93
  94 #if   defined( LOW_PERFORMANCE )
  95  static int isa0=7,isa1=7,csr80=0x0c10;
  96 #elif defined( MID_PERFORMANCE )
  97  static int isa0=5,isa1=5,csr80=0x2810;
  98 #else   /* high performance */
  99  static int isa0=4,isa1=4,csr80=0x0017;
 100 #endif
 101
 102 /*
 103  * a few card/vendor specific defines
 104  */
 105 #define NI65_ID0    0x00
 106 #define NI65_ID1    0x55
 107 #define NI65_EB_ID0 0x52
 108 #define NI65_EB_ID1 0x44
 109 #define NE2100_ID0  0x57
 110 #define NE2100_ID1  0x57
 111
 112 #define PORT p->cmdr_addr
 113
 114 /*
 115  * buffer configuration
 116  */
 117 #if 1
 118 #define RMDNUM 16
 119 #define RMDNUMMASK 0x80000000
 120 #else
 121 #define RMDNUM 8
 122 #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */
 123 #endif
 124
 125 #if 0
 126 #define TMDNUM 1
 127 #define TMDNUMMASK 0x00000000
 128 #else
 129 #define TMDNUM 4
 130 #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */
 131 #endif
 132
 133 /* slightly oversized */
 134 #define R_BUF_SIZE 1544
 135 #define T_BUF_SIZE 1544
 136
 137 /*
 138  * lance register defines
 139  */
 140 #define L_DATAREG 0x00
 141 #define L_ADDRREG 0x02
 142 #define L_RESET   0x04
 143 #define L_CONFIG  0x05
 144 #define L_BUSIF   0x06
 145
 146 /*
 147  * to access the lance/am7990-regs, you have to write
 148  * reg-number into L_ADDRREG, then you can access it using L_DATAREG
 149  */
 150 #define CSR0  0x00
 151 #define CSR1  0x01
 152 #define CSR2  0x02
 153 #define CSR3  0x03
 154
 155 #define INIT_RING_BEFORE_START  0x1
 156 #define FULL_RESET_ON_ERROR     0x2
 157
 158 #if 0
 159 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
 160                            outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 161 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
 162                        inw(PORT+L_DATAREG))
 163 #if 0
 164 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 165 #else
 166 #define writedatareg(val) {  writereg(val,CSR0); }
 167 #endif
 168 #else
 169 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);}
 170 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG))
 171 #define writedatareg(val) { writereg(val,CSR0); }
 172 #endif
 173
 174 static unsigned char ni_vendor[] = { 0x02,0x07,0x01 };
 175
 176 static struct card {
 177         unsigned char id0,id1;
 178         short id_offset;
 179         short total_size;
 180         short cmd_offset;
 181         short addr_offset;
 182         unsigned char *vendor_id;
 183         char *cardname;
 184         unsigned long config;
 185 } cards[] = {
 186         {
 187                 .id0         = NI65_ID0,
 188                 .id1         = NI65_ID1,
 189                 .id_offset   = 0x0e,
 190                 .total_size  = 0x10,
 191                 .cmd_offset  = 0x0,
 192                 .addr_offset = 0x8,
 193                 .vendor_id   = ni_vendor,
 194                 .cardname    = "ni6510",
 195                 .config      = 0x1,
 196         },
 197         {
 198                 .id0         = NI65_EB_ID0,
 199                 .id1         = NI65_EB_ID1,
 200                 .id_offset   = 0x0e,
 201                 .total_size  = 0x18,
 202                 .cmd_offset  = 0x10,
 203                 .addr_offset = 0x0,
 204                 .vendor_id   = ni_vendor,
 205                 .cardname    = "ni6510 EtherBlaster",
 206                 .config      = 0x2,
 207         },
 208         {
 209                 .id0         = NE2100_ID0,
 210                 .id1         = NE2100_ID1,
 211                 .id_offset   = 0x0e,
 212                 .total_size  = 0x18,
 213                 .cmd_offset  = 0x10,
 214                 .addr_offset = 0x0,
 215                 .vendor_id   = NULL,
 216                 .cardname    = "generic NE2100",
 217                 .config      = 0x0,
 218         },
 219 };
 220 #define NUM_CARDS 3
 221
 222 struct priv
 223 {
 224         struct rmd rmdhead[RMDNUM];
 225         struct tmd tmdhead[TMDNUM];
 226         struct init_block ib;
 227         int rmdnum;
 228         int tmdnum,tmdlast;
 229 #ifdef RCV_VIA_SKB
 230         struct sk_buff *recv_skb[RMDNUM];
 231 #else
 232         void *recvbounce[RMDNUM];
 233 #endif
 234 #ifdef XMT_VIA_SKB
 235         struct sk_buff *tmd_skb[TMDNUM];
 236 #endif
 237         void *tmdbounce[TMDNUM];
 238         int tmdbouncenum;
 239         int lock,xmit_queued;
 240
 241         void *self;
 242         int cmdr_addr;
 243         int cardno;
 244         int features;
 245         spinlock_t ring_lock;
 246 };
 247
 248 static int  ni65_probe1(struct net_device *dev,int);
 249 static irqreturn_t ni65_interrupt(int irq, void * dev_id);
 250 static void ni65_recv_intr(struct net_device *dev,int);
 251 static void ni65_xmit_intr(struct net_device *dev,int);
 252 static int  ni65_open(struct net_device *dev);
 253 static int  ni65_lance_reinit(struct net_device *dev);
 254 static void ni65_init_lance(struct priv *p,unsigned char*,int,int);
 255 static netdev_tx_t ni65_send_packet(struct sk_buff *skb,
 256                                     struct net_device *dev);
 257 static void  ni65_timeout(struct net_device *dev);
 258 static int  ni65_close(struct net_device *dev);
 259 static int  ni65_alloc_buffer(struct net_device *dev);
 260 static void ni65_free_buffer(struct priv *p);
 261 static void set_multicast_list(struct net_device *dev);
 262
 263 static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */
 264 static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */
 265
 266 static int debuglevel = 1;
 267
 268 /*
 269  * set 'performance' registers .. we must STOP lance for that
 270  */
 271 static void ni65_set_performance(struct priv *p)
 272 {
 273         writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */
 274
 275         if( !(cards[p->cardno].config & 0x02) )
 276                 return;
 277
 278         outw(80,PORT+L_ADDRREG);
 279         if(inw(PORT+L_ADDRREG) != 80)
 280                 return;
 281
 282         writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */
 283         outw(0,PORT+L_ADDRREG);
 284         outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */
 285         outw(1,PORT+L_ADDRREG);
 286         outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns     */
 287
 288         outw(CSR0,PORT+L_ADDRREG);      /* switch back to CSR0 */
 289 }
 290
 291 /*
 292  * open interface (up)
 293  */
 294 static int ni65_open(struct net_device *dev)
 295 {
 296         struct priv *p = dev->ml_priv;
 297         int irqval = request_irq(dev->irq, ni65_interrupt,0,
 298                         cards[p->cardno].cardname,dev);
 299         if (irqval) {
 300                 printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n",
 301                           dev->name,dev->irq, irqval);
 302                 return -EAGAIN;
 303         }
 304
 305         if(ni65_lance_reinit(dev))
 306         {
 307                 netif_start_queue(dev);
 308                 return 0;
 309         }
 310         else
 311         {
 312                 free_irq(dev->irq,dev);
 313                 return -EAGAIN;
 314         }
 315 }
 316
 317 /*
 318  * close interface (down)
 319  */
 320 static int ni65_close(struct net_device *dev)
 321 {
 322         struct priv *p = dev->ml_priv;
 323
 324         netif_stop_queue(dev);
 325
 326         outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */
 327
 328 #ifdef XMT_VIA_SKB
 329         {
 330                 int i;
 331                 for(i=0;i<TMDNUM;i++)
 332                 {
 333                         if(p->tmd_skb[i]) {
 334                                 dev_kfree_skb(p->tmd_skb[i]);
 335                                 p->tmd_skb[i] = NULL;
 336                         }
 337                 }
 338         }
 339 #endif
 340         free_irq(dev->irq,dev);
 341         return 0;
 342 }
 343
 344 static void cleanup_card(struct net_device *dev)
 345 {
 346         struct priv *p = dev->ml_priv;
 347         disable_dma(dev->dma);
 348         free_dma(dev->dma);
 349         release_region(dev->base_addr, cards[p->cardno].total_size);
 350         ni65_free_buffer(p);
 351 }
 352
 353 /* set: io,irq,dma or set it when calling insmod */
 354 static int irq;
 355 static int io;
 356 static int dma;
 357
 358 /*
 359  * Probe The Card (not the lance-chip)
 360  */
 361 struct net_device * __init ni65_probe(int unit)
 362 {
 363         struct net_device *dev = alloc_etherdev(0);
 364         static int ports[] = {0x360,0x300,0x320,0x340, 0};
 365         int *port;
 366         int err = 0;
 367
 368         if (!dev)
 369                 return ERR_PTR(-ENOMEM);
 370
 371         if (unit >= 0) {
 372                 sprintf(dev->name, "eth%d", unit);
 373                 netdev_boot_setup_check(dev);
 374                 irq = dev->irq;
 375                 dma = dev->dma;
 376         } else {
 377                 dev->base_addr = io;
 378         }
 379
 380         if (dev->base_addr > 0x1ff) { /* Check a single specified location. */
 381                 err = ni65_probe1(dev, dev->base_addr);
 382         } else if (dev->base_addr > 0) { /* Don't probe at all. */
 383                 err = -ENXIO;
 384         } else {
 385                 for (port = ports; *port && ni65_probe1(dev, *port); port++)
 386                         ;
 387                 if (!*port)
 388                         err = -ENODEV;
 389         }
 390         if (err)
 391                 goto out;
 392
 393         err = register_netdev(dev);
 394         if (err)
 395                 goto out1;
 396         return dev;
 397 out1:
 398         cleanup_card(dev);
 399 out:
 400         free_netdev(dev);
 401         return ERR_PTR(err);
 402 }
 403
 404 static const struct net_device_ops ni65_netdev_ops = {
 405         .ndo_open               = ni65_open,
 406         .ndo_stop               = ni65_close,
 407         .ndo_start_xmit         = ni65_send_packet,
 408         .ndo_tx_timeout         = ni65_timeout,
 409         .ndo_set_multicast_list = set_multicast_list,
 410         .ndo_change_mtu         = eth_change_mtu,
 411         .ndo_set_mac_address    = eth_mac_addr,
 412         .ndo_validate_addr      = eth_validate_addr,
 413 };
 414
 415 /*
 416  * this is the real card probe ..
 417  */
 418 static int __init ni65_probe1(struct net_device *dev,int ioaddr)
 419 {
 420         int i,j;
 421         struct priv *p;
 422         unsigned long flags;
 423
 424         dev->irq = irq;
 425         dev->dma = dma;
 426
 427         for(i=0;i<NUM_CARDS;i++) {
 428                 if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname))
 429                         continue;
 430                 if(cards[i].id_offset >= 0) {
 431                         if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 ||
 432                                  inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) {
 433                                  release_region(ioaddr, cards[i].total_size);
 434                                  continue;
 435                         }
 436                 }
 437                 if(cards[i].vendor_id) {
 438                         for(j=0;j<3;j++)
 439                                 if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) {
 440                                         release_region(ioaddr, cards[i].total_size);
 441                                         continue;
 442                           }
 443                 }
 444                 break;
 445         }
 446         if(i == NUM_CARDS)
 447                 return -ENODEV;
 448
 449         for(j=0;j<6;j++)
 450                 dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j);
 451
 452         if( (j=ni65_alloc_buffer(dev)) < 0) {
 453                 release_region(ioaddr, cards[i].total_size);
 454                 return j;
 455         }
 456         p = dev->ml_priv;
 457         p->cmdr_addr = ioaddr + cards[i].cmd_offset;
 458         p->cardno = i;
 459         spin_lock_init(&p->ring_lock);
 460
 461         printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr);
 462
 463         outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
 464         if( (j=readreg(CSR0)) != 0x4) {
 465                  printk("failed.\n");
 466                  printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j);
 467                  ni65_free_buffer(p);
 468                  release_region(ioaddr, cards[p->cardno].total_size);
 469                  return -EAGAIN;
 470         }
 471
 472         outw(88,PORT+L_ADDRREG);
 473         if(inw(PORT+L_ADDRREG) == 88) {
 474                 unsigned long v;
 475                 v = inw(PORT+L_DATAREG);
 476                 v <<= 16;
 477                 outw(89,PORT+L_ADDRREG);
 478                 v |= inw(PORT+L_DATAREG);
 479                 printk("Version %#08lx, ",v);
 480                 p->features = INIT_RING_BEFORE_START;
 481         }
 482         else {
 483                 printk("ancient LANCE, ");
 484                 p->features = 0x0;
 485         }
 486
 487         if(test_bit(0,&cards[i].config)) {
 488                 dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3];
 489                 dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3];
 490                 printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma);
 491         }
 492         else {
 493                 if(dev->dma == 0) {
 494                 /* 'stuck test' from lance.c */
 495                         unsigned long dma_channels =
 496                                 ((inb(DMA1_STAT_REG) >> 4) & 0x0f)
 497                                 | (inb(DMA2_STAT_REG) & 0xf0);
 498                         for(i=1;i<5;i++) {
 499                                 int dma = dmatab[i];
 500                                 if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))
 501                                         continue;
 502
 503                                 flags=claim_dma_lock();
 504                                 disable_dma(dma);
 505                                 set_dma_mode(dma,DMA_MODE_CASCADE);
 506                                 enable_dma(dma);
 507                                 release_dma_lock(flags);
 508
 509                                 ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */
 510
 511                                 flags=claim_dma_lock();
 512                                 disable_dma(dma);
 513                                 free_dma(dma);
 514                                 release_dma_lock(flags);
 515
 516                                 if(readreg(CSR0) & CSR0_IDON)
 517                                         break;
 518                         }
 519                         if(i == 5) {
 520                                 printk("failed.\n");
 521                                 printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name);
 522                                 ni65_free_buffer(p);
 523                                 release_region(ioaddr, cards[p->cardno].total_size);
 524                                 return -EAGAIN;
 525                         }
 526                         dev->dma = dmatab[i];
 527                         printk("DMA %d (autodetected), ",dev->dma);
 528                 }
 529                 else
 530                         printk("DMA %d (assigned), ",dev->dma);
 531
 532                 if(dev->irq < 2)
 533                 {
 534                         unsigned long irq_mask;
 535
 536                         ni65_init_lance(p,dev->dev_addr,0,0);
 537                         irq_mask = probe_irq_on();
 538                         writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */
 539                         msleep(20);
 540                         dev->irq = probe_irq_off(irq_mask);
 541                         if(!dev->irq)
 542                         {
 543                                 printk("Failed to detect IRQ line!\n");
 544                                 ni65_free_buffer(p);
 545                                 release_region(ioaddr, cards[p->cardno].total_size);
 546                                 return -EAGAIN;
 547                         }
 548                         printk("IRQ %d (autodetected).\n",dev->irq);
 549                 }
 550                 else
 551                         printk("IRQ %d (assigned).\n",dev->irq);
 552         }
 553
 554         if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0)
 555         {
 556                 printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
 557                 ni65_free_buffer(p);
 558                 release_region(ioaddr, cards[p->cardno].total_size);
 559                 return -EAGAIN;
 560         }
 561
 562         dev->base_addr = ioaddr;
 563         dev->netdev_ops = &ni65_netdev_ops;
 564         dev->watchdog_timeo     = HZ/2;
 565
 566         return 0; /* everything is OK */
 567 }
 568
 569 /*
 570  * set lance register and trigger init
 571  */
 572 static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode)
 573 {
 574         int i;
 575         u32 pib;
 576
 577         writereg(CSR0_CLRALL|CSR0_STOP,CSR0);
 578
 579         for(i=0;i<6;i++)
 580                 p->ib.eaddr[i] = daddr[i];
 581
 582         for(i=0;i<8;i++)
 583                 p->ib.filter[i] = filter;
 584         p->ib.mode = mode;
 585
 586         p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK;
 587         p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK;
 588         writereg(0,CSR3);       /* busmaster/no word-swap */
 589         pib = (u32) isa_virt_to_bus(&p->ib);
 590         writereg(pib & 0xffff,CSR1);
 591         writereg(pib >> 16,CSR2);
 592
 593         writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 594
 595         for(i=0;i<32;i++)
 596         {
 597                 mdelay(4);
 598                 if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) )
 599                         break; /* init ok ? */
 600         }
 601 }
 602
 603 /*
 604  * allocate memory area and check the 16MB border
 605  */
 606 static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type)
 607 {
 608         struct sk_buff *skb=NULL;
 609         unsigned char *ptr;
 610         void *ret;
 611
 612         if(type) {
 613                 ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA);
 614                 if(!skb) {
 615                         printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
 616                         return NULL;
 617                 }
 618                 skb_reserve(skb,2+16);
 619                 skb_put(skb,R_BUF_SIZE);         /* grab the whole space .. (not necessary) */
 620                 ptr = skb->data;
 621         }
 622         else {
 623                 ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA);
 624                 if(!ret) {
 625                         printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
 626                         return NULL;
 627                 }
 628         }
 629         if( (u32) virt_to_phys(ptr+size) > 0x1000000) {
 630                 printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what);
 631                 if(type)
 632                         kfree_skb(skb);
 633                 else
 634                         kfree(ptr);
 635                 return NULL;
 636         }
 637         return ret;
 638 }
 639
 640 /*
 641  * allocate all memory structures .. send/recv buffers etc ...
 642  */
 643 static int ni65_alloc_buffer(struct net_device *dev)
 644 {
 645         unsigned char *ptr;
 646         struct priv *p;
 647         int i;
 648
 649         /*
 650          * we need 8-aligned memory ..
 651          */
 652         ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0);
 653         if(!ptr)
 654                 return -ENOMEM;
 655
 656         p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
 657         memset((char *)p, 0, sizeof(struct priv));
 658         p->self = ptr;
 659
 660         for(i=0;i<TMDNUM;i++)
 661         {
 662 #ifdef XMT_VIA_SKB
 663                 p->tmd_skb[i] = NULL;
 664 #endif
 665                 p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
 666                 if(!p->tmdbounce[i]) {
 667                         ni65_free_buffer(p);
 668                         return -ENOMEM;
 669                 }
 670         }
 671
 672         for(i=0;i<RMDNUM;i++)
 673         {
 674 #ifdef RCV_VIA_SKB
 675                 p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
 676                 if(!p->recv_skb[i]) {
 677                         ni65_free_buffer(p);
 678                         return -ENOMEM;
 679                 }
 680 #else
 681                 p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
 682                 if(!p->recvbounce[i]) {
 683                         ni65_free_buffer(p);
 684                         return -ENOMEM;
 685                 }
 686 #endif
 687         }
 688
 689         return 0; /* everything is OK */
 690 }
 691
 692 /*
 693  * free buffers and private struct
 694  */
 695 static void ni65_free_buffer(struct priv *p)
 696 {
 697         int i;
 698
 699         if(!p)
 700                 return;
 701
 702         for(i=0;i<TMDNUM;i++) {
 703                 kfree(p->tmdbounce[i]);
 704 #ifdef XMT_VIA_SKB
 705                 if(p->tmd_skb[i])
 706                         dev_kfree_skb(p->tmd_skb[i]);
 707 #endif
 708         }
 709
 710         for(i=0;i<RMDNUM;i++)
 711         {
 712 #ifdef RCV_VIA_SKB
 713                 if(p->recv_skb[i])
 714                         dev_kfree_skb(p->recv_skb[i]);
 715 #else
 716                 kfree(p->recvbounce[i]);
 717 #endif
 718         }
 719         kfree(p->self);
 720 }
 721
 722
 723 /*
 724  * stop and (re)start lance .. e.g after an error
 725  */
 726 static void ni65_stop_start(struct net_device *dev,struct priv *p)
 727 {
 728         int csr0 = CSR0_INEA;
 729
 730         writedatareg(CSR0_STOP);
 731
 732         if(debuglevel > 1)
 733                 printk(KERN_DEBUG "ni65_stop_start\n");
 734
 735         if(p->features & INIT_RING_BEFORE_START) {
 736                 int i;
 737 #ifdef XMT_VIA_SKB
 738                 struct sk_buff *skb_save[TMDNUM];
 739 #endif
 740                 unsigned long buffer[TMDNUM];
 741                 short blen[TMDNUM];
 742
 743                 if(p->xmit_queued) {
 744                         while(1) {
 745                                 if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN))
 746                                         break;
 747                                 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 748                                 if(p->tmdlast == p->tmdnum)
 749                                         break;
 750                         }
 751                 }
 752
 753                 for(i=0;i<TMDNUM;i++) {
 754                         struct tmd *tmdp = p->tmdhead + i;
 755 #ifdef XMT_VIA_SKB
 756                         skb_save[i] = p->tmd_skb[i];
 757 #endif
 758                         buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer);
 759                         blen[i] = tmdp->blen;
 760                         tmdp->u.s.status = 0x0;
 761                 }
 762
 763                 for(i=0;i<RMDNUM;i++) {
 764                         struct rmd *rmdp = p->rmdhead + i;
 765                         rmdp->u.s.status = RCV_OWN;
 766                 }
 767                 p->tmdnum = p->xmit_queued = 0;
 768                 writedatareg(CSR0_STRT | csr0);
 769
 770                 for(i=0;i<TMDNUM;i++) {
 771                         int num = (i + p->tmdlast) & (TMDNUM-1);
 772                         p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */
 773                         p->tmdhead[i].blen = blen[num];
 774                         if(p->tmdhead[i].u.s.status & XMIT_OWN) {
 775                                  p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
 776                                  p->xmit_queued = 1;
 777          writedatareg(CSR0_TDMD | CSR0_INEA | csr0);
 778                         }
 779 #ifdef XMT_VIA_SKB
 780                         p->tmd_skb[i] = skb_save[num];
 781 #endif
 782                 }
 783                 p->rmdnum = p->tmdlast = 0;
 784                 if(!p->lock)
 785                         if (p->tmdnum || !p->xmit_queued)
 786                                 netif_wake_queue(dev);
 787                 dev->trans_start = jiffies; /* prevent tx timeout */
 788         }
 789         else
 790                 writedatareg(CSR0_STRT | csr0);
 791 }
 792
 793 /*
 794  * init lance (write init-values .. init-buffers) (open-helper)
 795  */
 796 static int ni65_lance_reinit(struct net_device *dev)
 797 {
 798          int i;
 799          struct priv *p = dev->ml_priv;
 800          unsigned long flags;
 801
 802          p->lock = 0;
 803          p->xmit_queued = 0;
 804
 805          flags=claim_dma_lock();
 806          disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 807          set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 808          enable_dma(dev->dma);
 809          release_dma_lock(flags);
 810
 811          outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
 812          if( (i=readreg(CSR0) ) != 0x4)
 813          {
 814                  printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name,
 815                                                         cards[p->cardno].cardname,(int) i);
 816                  flags=claim_dma_lock();
 817                  disable_dma(dev->dma);
 818                  release_dma_lock(flags);
 819                  return 0;
 820          }
 821
 822          p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0;
 823          for(i=0;i<TMDNUM;i++)
 824          {
 825                  struct tmd *tmdp = p->tmdhead + i;
 826 #ifdef XMT_VIA_SKB
 827                  if(p->tmd_skb[i]) {
 828                          dev_kfree_skb(p->tmd_skb[i]);
 829                          p->tmd_skb[i] = NULL;
 830                  }
 831 #endif
 832                  tmdp->u.buffer = 0x0;
 833                  tmdp->u.s.status = XMIT_START | XMIT_END;
 834                  tmdp->blen = tmdp->status2 = 0;
 835          }
 836
 837          for(i=0;i<RMDNUM;i++)
 838          {
 839                  struct rmd *rmdp = p->rmdhead + i;
 840 #ifdef RCV_VIA_SKB
 841                  rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data);
 842 #else
 843                  rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]);
 844 #endif
 845                  rmdp->blen = -(R_BUF_SIZE-8);
 846                  rmdp->mlen = 0;
 847                  rmdp->u.s.status = RCV_OWN;
 848          }
 849
 850          if(dev->flags & IFF_PROMISC)
 851                  ni65_init_lance(p,dev->dev_addr,0x00,M_PROM);
 852          else if (netdev_mc_count(dev) || dev->flags & IFF_ALLMULTI)
 853                  ni65_init_lance(p,dev->dev_addr,0xff,0x0);
 854          else
 855                  ni65_init_lance(p,dev->dev_addr,0x00,0x00);
 856
 857         /*
 858          * ni65_set_lance_mem() sets L_ADDRREG to CSR0
 859          * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED
 860          */
 861
 862          if(inw(PORT+L_DATAREG) & CSR0_IDON)    {
 863                  ni65_set_performance(p);
 864                                          /* init OK: start lance , enable interrupts */
 865                  writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT);
 866                  return 1; /* ->OK */
 867          }
 868          printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 869          flags=claim_dma_lock();
 870          disable_dma(dev->dma);
 871          release_dma_lock(flags);
 872          return 0; /* ->Error */
 873 }
 874
 875 /*
 876  * interrupt handler
 877  */
 878 static irqreturn_t ni65_interrupt(int irq, void * dev_id)
 879 {
 880         int csr0 = 0;
 881         struct net_device *dev = dev_id;
 882         struct priv *p;
 883         int bcnt = 32;
 884
 885         p = dev->ml_priv;
 886
 887         spin_lock(&p->ring_lock);
 888
 889         while(--bcnt) {
 890                 csr0 = inw(PORT+L_DATAREG);
 891
 892 #if 0
 893                 writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */
 894 #else
 895                 writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */
 896 #endif
 897
 898                 if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT)))
 899                         break;
 900
 901                 if(csr0 & CSR0_RINT) /* RECV-int? */
 902                         ni65_recv_intr(dev,csr0);
 903                 if(csr0 & CSR0_TINT) /* XMIT-int? */
 904                         ni65_xmit_intr(dev,csr0);
 905
 906                 if(csr0 & CSR0_ERR)
 907                 {
 908                         if(debuglevel > 1)
 909                                 printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0);
 910                         if(csr0 & CSR0_BABL)
 911                                 dev->stats.tx_errors++;
 912                         if(csr0 & CSR0_MISS) {
 913                                 int i;
 914                                 for(i=0;i<RMDNUM;i++)
 915                                         printk("%02x ",p->rmdhead[i].u.s.status);
 916                                 printk("\n");
 917                                 dev->stats.rx_errors++;
 918                         }
 919                         if(csr0 & CSR0_MERR) {
 920                                 if(debuglevel > 1)
 921                                         printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0);
 922                                 ni65_stop_start(dev,p);
 923                         }
 924                 }
 925         }
 926
 927 #ifdef RCV_PARANOIA_CHECK
 928 {
 929  int j;
 930  for(j=0;j<RMDNUM;j++)
 931  {
 932         int i, num2;
 933         for(i=RMDNUM-1;i>0;i--) {
 934                  num2 = (p->rmdnum + i) & (RMDNUM-1);
 935                  if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
 936                                 break;
 937         }
 938
 939         if(i) {
 940                 int k, num1;
 941                 for(k=0;k<RMDNUM;k++) {
 942                         num1 = (p->rmdnum + k) & (RMDNUM-1);
 943                         if(!(p->rmdhead[num1].u.s.status & RCV_OWN))
 944                                 break;
 945                 }
 946                 if(!k)
 947                         break;
 948
 949                 if(debuglevel > 0)
 950                 {
 951                         char buf[256],*buf1;
 952                         buf1 = buf;
 953                         for(k=0;k<RMDNUM;k++) {
 954                                 sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */
 955                                 buf1 += 3;
 956                         }
 957                         *buf1 = 0;
 958                         printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf);
 959                 }
 960
 961                 p->rmdnum = num1;
 962                 ni65_recv_intr(dev,csr0);
 963                 if((p->rmdhead[num2].u.s.status & RCV_OWN))
 964                         break;  /* ok, we are 'in sync' again */
 965         }
 966         else
 967                 break;
 968  }
 969 }
 970 #endif
 971
 972         if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
 973                 printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name);
 974                 ni65_stop_start(dev,p);
 975         }
 976         else
 977                 writedatareg(CSR0_INEA);
 978
 979         spin_unlock(&p->ring_lock);
 980         return IRQ_HANDLED;
 981 }
 982
 983 /*
 984  * We have received an Xmit-Interrupt ..
 985  * send a new packet if necessary
 986  */
 987 static void ni65_xmit_intr(struct net_device *dev,int csr0)
 988 {
 989         struct priv *p = dev->ml_priv;
 990
 991         while(p->xmit_queued)
 992         {
 993                 struct tmd *tmdp = p->tmdhead + p->tmdlast;
 994                 int tmdstat = tmdp->u.s.status;
 995
 996                 if(tmdstat & XMIT_OWN)
 997                         break;
 998
 999                 if(tmdstat & XMIT_ERR)
1000                 {
1001 #if 0
1002                         if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3)
1003                                 printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name);
1004 #endif
1005                  /* checking some errors */
1006                         if(tmdp->status2 & XMIT_RTRY)
1007                                 dev->stats.tx_aborted_errors++;
1008                         if(tmdp->status2 & XMIT_LCAR)
1009                                 dev->stats.tx_carrier_errors++;
1010                         if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) {
1011                 /* this stops the xmitter */
1012                                 dev->stats.tx_fifo_errors++;
1013                                 if(debuglevel > 0)
1014                                         printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name);
1015                                 if(p->features & INIT_RING_BEFORE_START) {
1016                                         tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;    /* test: resend this frame */
1017                                         ni65_stop_start(dev,p);
1018                                         break;  /* no more Xmit processing .. */
1019                                 }
1020                                 else
1021                                  ni65_stop_start(dev,p);
1022                         }
1023                         if(debuglevel > 2)
1024                                 printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2);
1025                         if(!(csr0 & CSR0_BABL)) /* don't count errors twice */
1026                                 dev->stats.tx_errors++;
1027                         tmdp->status2 = 0;
1028                 }
1029                 else {
1030                         dev->stats.tx_bytes -= (short)(tmdp->blen);
1031                         dev->stats.tx_packets++;
1032                 }
1033
1034 #ifdef XMT_VIA_SKB
1035                 if(p->tmd_skb[p->tmdlast]) {
1036                          dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]);
1037                          p->tmd_skb[p->tmdlast] = NULL;
1038                 }
1039 #endif
1040
1041                 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
1042                 if(p->tmdlast == p->tmdnum)
1043                         p->xmit_queued = 0;
1044         }
1045         netif_wake_queue(dev);
1046 }
1047
1048 /*
1049  * We have received a packet
1050  */
1051 static void ni65_recv_intr(struct net_device *dev,int csr0)
1052 {
1053         struct rmd *rmdp;
1054         int rmdstat,len;
1055         int cnt=0;
1056         struct priv *p = dev->ml_priv;
1057
1058         rmdp = p->rmdhead + p->rmdnum;
1059         while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
1060         {
1061                 cnt++;
1062                 if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */
1063                 {
1064                         if(!(rmdstat & RCV_ERR)) {
1065                                 if(rmdstat & RCV_START)
1066                                 {
1067                                         dev->stats.rx_length_errors++;
1068                                         printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff);
1069                                 }
1070                         }
1071                         else {
1072                                 if(debuglevel > 2)
1073                                         printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n",
1074                                                                         dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) );
1075                                 if(rmdstat & RCV_FRAM)
1076                                         dev->stats.rx_frame_errors++;
1077                                 if(rmdstat & RCV_OFLO)
1078                                         dev->stats.rx_over_errors++;
1079                                 if(rmdstat & RCV_CRC)
1080                                         dev->stats.rx_crc_errors++;
1081                                 if(rmdstat & RCV_BUF_ERR)
1082                                         dev->stats.rx_fifo_errors++;
1083                         }
1084                         if(!(csr0 & CSR0_MISS)) /* don't count errors twice */
1085                                 dev->stats.rx_errors++;
1086                 }
1087                 else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60)
1088                 {
1089 #ifdef RCV_VIA_SKB
1090                         struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC);
1091                         if (skb)
1092                                 skb_reserve(skb,16);
1093 #else
1094                         struct sk_buff *skb = dev_alloc_skb(len+2);
1095 #endif
1096                         if(skb)
1097                         {
1098                                 skb_reserve(skb,2);
1099 #ifdef RCV_VIA_SKB
1100                                 if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) {
1101                                         skb_put(skb,len);
1102                                         skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len);
1103                                 }
1104                                 else {
1105                                         struct sk_buff *skb1 = p->recv_skb[p->rmdnum];
1106                                         skb_put(skb,R_BUF_SIZE);
1107                                         p->recv_skb[p->rmdnum] = skb;
1108                                         rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1109                                         skb = skb1;
1110                                         skb_trim(skb,len);
1111                                 }
1112 #else
1113                                 skb_put(skb,len);
1114                                 skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len);
1115 #endif
1116                                 dev->stats.rx_packets++;
1117                                 dev->stats.rx_bytes += len;
1118                                 skb->protocol=eth_type_trans(skb,dev);
1119                                 netif_rx(skb);
1120                         }
1121                         else
1122                         {
1123                                 printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name);
1124                                 dev->stats.rx_dropped++;
1125                         }
1126                 }
1127                 else {
1128                         printk(KERN_INFO "%s: received runt packet\n",dev->name);
1129                         dev->stats.rx_errors++;
1130                 }
1131                 rmdp->blen = -(R_BUF_SIZE-8);
1132                 rmdp->mlen = 0;
1133                 rmdp->u.s.status = RCV_OWN; /* change owner */
1134                 p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1);
1135                 rmdp = p->rmdhead + p->rmdnum;
1136         }
1137 }
1138
1139 /*
1140  * kick xmitter ..
1141  */
1142
1143 static void ni65_timeout(struct net_device *dev)
1144 {
1145         int i;
1146         struct priv *p = dev->ml_priv;
1147
1148         printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name);
1149         for(i=0;i<TMDNUM;i++)
1150                 printk("%02x ",p->tmdhead[i].u.s.status);
1151         printk("\n");
1152         ni65_lance_reinit(dev);
1153         dev->trans_start = jiffies; /* prevent tx timeout */
1154         netif_wake_queue(dev);
1155 }
1156
1157 /*
1158  *      Send a packet
1159  */
1160
1161 static netdev_tx_t ni65_send_packet(struct sk_buff *skb,
1162                                     struct net_device *dev)
1163 {
1164         struct priv *p = dev->ml_priv;
1165
1166         netif_stop_queue(dev);
1167
1168         if (test_and_set_bit(0, (void*)&p->lock)) {
1169                 printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
1170                 return NETDEV_TX_BUSY;
1171         }
1172
1173         {
1174                 short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1175                 struct tmd *tmdp;
1176                 unsigned long flags;
1177
1178 #ifdef XMT_VIA_SKB
1179                 if( (unsigned long) (skb->data + skb->len) > 0x1000000) {
1180 #endif
1181
1182                         skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum],
1183                                       skb->len > T_BUF_SIZE ? T_BUF_SIZE :
1184                                                               skb->len);
1185                         if (len > skb->len)
1186                                 memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len);
1187                         dev_kfree_skb (skb);
1188
1189                         spin_lock_irqsave(&p->ring_lock, flags);
1190                         tmdp = p->tmdhead + p->tmdnum;
1191                         tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]);
1192                         p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1);
1193
1194 #ifdef XMT_VIA_SKB
1195                 }
1196                 else {
1197                         spin_lock_irqsave(&p->ring_lock, flags);
1198
1199                         tmdp = p->tmdhead + p->tmdnum;
1200                         tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1201                         p->tmd_skb[p->tmdnum] = skb;
1202                 }
1203 #endif
1204                 tmdp->blen = -len;
1205
1206                 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
1207                 writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
1208
1209                 p->xmit_queued = 1;
1210                 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
1211
1212                 if(p->tmdnum != p->tmdlast)
1213                         netif_wake_queue(dev);
1214
1215                 p->lock = 0;
1216
1217                 spin_unlock_irqrestore(&p->ring_lock, flags);
1218         }
1219
1220         return NETDEV_TX_OK;
1221 }
1222
1223 static void set_multicast_list(struct net_device *dev)
1224 {
1225         if(!ni65_lance_reinit(dev))
1226                 printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name);
1227         netif_wake_queue(dev);
1228 }
1229
1230 #ifdef MODULE
1231 static struct net_device *dev_ni65;
1232
1233 module_param(irq, int, 0);
1234 module_param(io, int, 0);
1235 module_param(dma, int, 0);
1236 MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
1237 MODULE_PARM_DESC(io, "ni6510 I/O base address");
1238 MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
1239
1240 int __init init_module(void)
1241 {
1242         dev_ni65 = ni65_probe(-1);
1243         return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0;
1244 }
1245
1246 void __exit cleanup_module(void)
1247 {
1248         unregister_netdev(dev_ni65);
1249         cleanup_card(dev_ni65);
1250         free_netdev(dev_ni65);
1251 }
1252 #endif /* MODULE */
1253
1254 MODULE_LICENSE("GPL");