git.oblomov.eu Git - linux-2.6/blob - 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  * To compile as module, type:
  11  *     gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni65.c
  12  * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7
  13  *
  14  * This is an extension to the Linux operating system, and is covered by the
  15  * same GNU General Public License that covers the Linux-kernel.
  16  *
  17  * comments/bugs/suggestions can be sent to:
  18  *   Michael Hipp
  19  *   email: hippm@informatik.uni-tuebingen.de
  20  *
  21  * sources:
  22  *   some things are from the 'ni6510-packet-driver for dos by Russ Nelson'
  23  *   and from the original drivers by D.Becker
  24  *
  25  * known problems:
  26  *   - on some PCI boards (including my own) the card/board/ISA-bridge has
  27  *     problems with bus master DMA. This results in lotsa overruns.
  28  *     It may help to '#define RCV_PARANOIA_CHECK' or try to #undef
  29  *     the XMT and RCV_VIA_SKB option .. this reduces driver performance.
  30  *     Or just play with your BIOS options to optimize ISA-DMA access.
  31  *     Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE
  32  *     defines -> please report me your experience then
  33  *   - Harald reported for ASUS SP3G mainboards, that you should use
  34  *     the 'optimal settings' from the user's manual on page 3-12!
  35  *
  36  * credits:
  37  *   thanx to Jason Sullivan for sending me a ni6510 card!
  38  *   lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig
  39  *
  40  * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB)
  41  *    average: FTP -> 8384421 bytes received in 8.5 seconds
  42  *           (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS)
  43  *    peak: FTP -> 8384421 bytes received in 7.5 seconds
  44  *           (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS)
  45  */
  46
  47 /*
  48  * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK)
  49  * 96.Sept.29: virt_to_bus stuff added for new memory modell
  50  * 96.April.29: Added Harald Koenig's Patches (MH)
  51  * 96.April.13: enhanced error handling .. more tests (MH)
  52  * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH)
  53  * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH)
  54  * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH)
  55  *            hopefully no more 16MB limit
  56  *
  57  * 95.Nov.18: multicast tweaked (AC).
  58  *
  59  * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
  60  *
  61  * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff  (MH)
  62  */
  63
  64 #include <linux/kernel.h>
  65 #include <linux/string.h>
  66 #include <linux/errno.h>
  67 #include <linux/ioport.h>
  68 #include <linux/slab.h>
  69 #include <linux/interrupt.h>
  70 #include <linux/delay.h>
  71 #include <linux/init.h>
  72 #include <linux/netdevice.h>
  73 #include <linux/etherdevice.h>
  74 #include <linux/skbuff.h>
  75 #include <linux/module.h>
  76 #include <linux/bitops.h>
  77
  78 #include <asm/io.h>
  79 #include <asm/dma.h>
  80
  81 #include "ni65.h"
  82
  83 /*
  84  * the current setting allows an acceptable performance
  85  * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in
  86  * the header of this file
  87  * 'invert' the defines for max. performance. This may cause DMA problems
  88  * on some boards (e.g on my ASUS SP3G)
  89  */
  90 #undef XMT_VIA_SKB
  91 #undef RCV_VIA_SKB
  92 #define RCV_PARANOIA_CHECK
  93
  94 #define MID_PERFORMANCE
  95
  96 #if   defined( LOW_PERFORMANCE )
  97  static int isa0=7,isa1=7,csr80=0x0c10;
  98 #elif defined( MID_PERFORMANCE )
  99  static int isa0=5,isa1=5,csr80=0x2810;
 100 #else   /* high performance */
 101  static int isa0=4,isa1=4,csr80=0x0017;
 102 #endif
 103
 104 /*
 105  * a few card/vendor specific defines
 106  */
 107 #define NI65_ID0    0x00
 108 #define NI65_ID1    0x55
 109 #define NI65_EB_ID0 0x52
 110 #define NI65_EB_ID1 0x44
 111 #define NE2100_ID0  0x57
 112 #define NE2100_ID1  0x57
 113
 114 #define PORT p->cmdr_addr
 115
 116 /*
 117  * buffer configuration
 118  */
 119 #if 1
 120 #define RMDNUM 16
 121 #define RMDNUMMASK 0x80000000
 122 #else
 123 #define RMDNUM 8
 124 #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */
 125 #endif
 126
 127 #if 0
 128 #define TMDNUM 1
 129 #define TMDNUMMASK 0x00000000
 130 #else
 131 #define TMDNUM 4
 132 #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */
 133 #endif
 134
 135 /* slightly oversized */
 136 #define R_BUF_SIZE 1544
 137 #define T_BUF_SIZE 1544
 138
 139 /*
 140  * lance register defines
 141  */
 142 #define L_DATAREG 0x00
 143 #define L_ADDRREG 0x02
 144 #define L_RESET   0x04
 145 #define L_CONFIG  0x05
 146 #define L_BUSIF   0x06
 147
 148 /*
 149  * to access the lance/am7990-regs, you have to write
 150  * reg-number into L_ADDRREG, then you can access it using L_DATAREG
 151  */
 152 #define CSR0  0x00
 153 #define CSR1  0x01
 154 #define CSR2  0x02
 155 #define CSR3  0x03
 156
 157 #define INIT_RING_BEFORE_START  0x1
 158 #define FULL_RESET_ON_ERROR     0x2
 159
 160 #if 0
 161 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
 162                            outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 163 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
 164                        inw(PORT+L_DATAREG))
 165 #if 0
 166 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
 167 #else
 168 #define writedatareg(val) {  writereg(val,CSR0); }
 169 #endif
 170 #else
 171 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);}
 172 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG))
 173 #define writedatareg(val) { writereg(val,CSR0); }
 174 #endif
 175
 176 static unsigned char ni_vendor[] = { 0x02,0x07,0x01 };
 177
 178 static struct card {
 179         unsigned char id0,id1;
 180         short id_offset;
 181         short total_size;
 182         short cmd_offset;
 183         short addr_offset;
 184         unsigned char *vendor_id;
 185         char *cardname;
 186         long config;
 187 } cards[] = {
 188         {
 189                 .id0         = NI65_ID0,
 190                 .id1         = NI65_ID1,
 191                 .id_offset   = 0x0e,
 192                 .total_size  = 0x10,
 193                 .cmd_offset  = 0x0,
 194                 .addr_offset = 0x8,
 195                 .vendor_id   = ni_vendor,
 196                 .cardname    = "ni6510",
 197                 .config      = 0x1,
 198         },
 199         {
 200                 .id0         = NI65_EB_ID0,
 201                 .id1         = NI65_EB_ID1,
 202                 .id_offset   = 0x0e,
 203                 .total_size  = 0x18,
 204                 .cmd_offset  = 0x10,
 205                 .addr_offset = 0x0,
 206                 .vendor_id   = ni_vendor,
 207                 .cardname    = "ni6510 EtherBlaster",
 208                 .config      = 0x2,
 209         },
 210         {
 211                 .id0         = NE2100_ID0,
 212                 .id1         = NE2100_ID1,
 213                 .id_offset   = 0x0e,
 214                 .total_size  = 0x18,
 215                 .cmd_offset  = 0x10,
 216                 .addr_offset = 0x0,
 217                 .vendor_id   = NULL,
 218                 .cardname    = "generic NE2100",
 219                 .config      = 0x0,
 220         },
 221 };
 222 #define NUM_CARDS 3
 223
 224 struct priv
 225 {
 226         struct rmd rmdhead[RMDNUM];
 227         struct tmd tmdhead[TMDNUM];
 228         struct init_block ib;
 229         int rmdnum;
 230         int tmdnum,tmdlast;
 231 #ifdef RCV_VIA_SKB
 232         struct sk_buff *recv_skb[RMDNUM];
 233 #else
 234         void *recvbounce[RMDNUM];
 235 #endif
 236 #ifdef XMT_VIA_SKB
 237         struct sk_buff *tmd_skb[TMDNUM];
 238 #endif
 239         void *tmdbounce[TMDNUM];
 240         int tmdbouncenum;
 241         int lock,xmit_queued;
 242         struct net_device_stats stats;
 243         void *self;
 244         int cmdr_addr;
 245         int cardno;
 246         int features;
 247         spinlock_t ring_lock;
 248 };
 249
 250 static int  ni65_probe1(struct net_device *dev,int);
 251 static irqreturn_t ni65_interrupt(int irq, void * dev_id, struct pt_regs *regs);
 252 static void ni65_recv_intr(struct net_device *dev,int);
 253 static void ni65_xmit_intr(struct net_device *dev,int);
 254 static int  ni65_open(struct net_device *dev);
 255 static int  ni65_lance_reinit(struct net_device *dev);
 256 static void ni65_init_lance(struct priv *p,unsigned char*,int,int);
 257 static int  ni65_send_packet(struct sk_buff *skb, struct net_device *dev);
 258 static void  ni65_timeout(struct net_device *dev);
 259 static int  ni65_close(struct net_device *dev);
 260 static int  ni65_alloc_buffer(struct net_device *dev);
 261 static void ni65_free_buffer(struct priv *p);
 262 static struct net_device_stats *ni65_get_stats(struct net_device *);
 263 static void set_multicast_list(struct net_device *dev);
 264
 265 static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */
 266 static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */
 267
 268 static int debuglevel = 1;
 269
 270 /*
 271  * set 'performance' registers .. we must STOP lance for that
 272  */
 273 static void ni65_set_performance(struct priv *p)
 274 {
 275         writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */
 276
 277         if( !(cards[p->cardno].config & 0x02) )
 278                 return;
 279
 280         outw(80,PORT+L_ADDRREG);
 281         if(inw(PORT+L_ADDRREG) != 80)
 282                 return;
 283
 284         writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */
 285         outw(0,PORT+L_ADDRREG);
 286         outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */
 287         outw(1,PORT+L_ADDRREG);
 288         outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns     */
 289
 290         outw(CSR0,PORT+L_ADDRREG);      /* switch back to CSR0 */
 291 }
 292
 293 /*
 294  * open interface (up)
 295  */
 296 static int ni65_open(struct net_device *dev)
 297 {
 298         struct priv *p = (struct priv *) dev->priv;
 299         int irqval = request_irq(dev->irq, &ni65_interrupt,0,
 300                         cards[p->cardno].cardname,dev);
 301         if (irqval) {
 302                 printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n",
 303                           dev->name,dev->irq, irqval);
 304                 return -EAGAIN;
 305         }
 306
 307         if(ni65_lance_reinit(dev))
 308         {
 309                 netif_start_queue(dev);
 310                 return 0;
 311         }
 312         else
 313         {
 314                 free_irq(dev->irq,dev);
 315                 return -EAGAIN;
 316         }
 317 }
 318
 319 /*
 320  * close interface (down)
 321  */
 322 static int ni65_close(struct net_device *dev)
 323 {
 324         struct priv *p = (struct priv *) dev->priv;
 325
 326         netif_stop_queue(dev);
 327
 328         outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */
 329
 330 #ifdef XMT_VIA_SKB
 331         {
 332                 int i;
 333                 for(i=0;i<TMDNUM;i++)
 334                 {
 335                         if(p->tmd_skb[i]) {
 336                                 dev_kfree_skb(p->tmd_skb[i]);
 337                                 p->tmd_skb[i] = NULL;
 338                         }
 339                 }
 340         }
 341 #endif
 342         free_irq(dev->irq,dev);
 343         return 0;
 344 }
 345
 346 static void cleanup_card(struct net_device *dev)
 347 {
 348         struct priv *p = (struct priv *) dev->priv;
 349         disable_dma(dev->dma);
 350         free_dma(dev->dma);
 351         release_region(dev->base_addr, cards[p->cardno].total_size);
 352         ni65_free_buffer(p);
 353 }
 354
 355 /* set: io,irq,dma or set it when calling insmod */
 356 static int irq;
 357 static int io;
 358 static int dma;
 359
 360 /*
 361  * Probe The Card (not the lance-chip)
 362  */
 363 struct net_device * __init ni65_probe(int unit)
 364 {
 365         struct net_device *dev = alloc_etherdev(0);
 366         static int ports[] = {0x360,0x300,0x320,0x340, 0};
 367         int *port;
 368         int err = 0;
 369
 370         if (!dev)
 371                 return ERR_PTR(-ENOMEM);
 372
 373         if (unit >= 0) {
 374                 sprintf(dev->name, "eth%d", unit);
 375                 netdev_boot_setup_check(dev);
 376                 irq = dev->irq;
 377                 dma = dev->dma;
 378         } else {
 379                 dev->base_addr = io;
 380         }
 381
 382         if (dev->base_addr > 0x1ff) { /* Check a single specified location. */
 383                 err = ni65_probe1(dev, dev->base_addr);
 384         } else if (dev->base_addr > 0) { /* Don't probe at all. */
 385                 err = -ENXIO;
 386         } else {
 387                 for (port = ports; *port && ni65_probe1(dev, *port); port++)
 388                         ;
 389                 if (!*port)
 390                         err = -ENODEV;
 391         }
 392         if (err)
 393                 goto out;
 394
 395         err = register_netdev(dev);
 396         if (err)
 397                 goto out1;
 398         return dev;
 399 out1:
 400         cleanup_card(dev);
 401 out:
 402         free_netdev(dev);
 403         return ERR_PTR(err);
 404 }
 405
 406 /*
 407  * this is the real card probe ..
 408  */
 409 static int __init ni65_probe1(struct net_device *dev,int ioaddr)
 410 {
 411         int i,j;
 412         struct priv *p;
 413         unsigned long flags;
 414
 415         dev->irq = irq;
 416         dev->dma = dma;
 417
 418         for(i=0;i<NUM_CARDS;i++) {
 419                 if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname))
 420                         continue;
 421                 if(cards[i].id_offset >= 0) {
 422                         if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 ||
 423                                  inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) {
 424                                  release_region(ioaddr, cards[i].total_size);
 425                                  continue;
 426                         }
 427                 }
 428                 if(cards[i].vendor_id) {
 429                         for(j=0;j<3;j++)
 430                                 if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) {
 431                                         release_region(ioaddr, cards[i].total_size);
 432                                         continue;
 433                           }
 434                 }
 435                 break;
 436         }
 437         if(i == NUM_CARDS)
 438                 return -ENODEV;
 439
 440         for(j=0;j<6;j++)
 441                 dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j);
 442
 443         if( (j=ni65_alloc_buffer(dev)) < 0) {
 444                 release_region(ioaddr, cards[i].total_size);
 445                 return j;
 446         }
 447         p = (struct priv *) dev->priv;
 448         p->cmdr_addr = ioaddr + cards[i].cmd_offset;
 449         p->cardno = i;
 450         spin_lock_init(&p->ring_lock);
 451
 452         printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr);
 453
 454         outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
 455         if( (j=readreg(CSR0)) != 0x4) {
 456                  printk("failed.\n");
 457                  printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j);
 458                  ni65_free_buffer(p);
 459                  release_region(ioaddr, cards[p->cardno].total_size);
 460                  return -EAGAIN;
 461         }
 462
 463         outw(88,PORT+L_ADDRREG);
 464         if(inw(PORT+L_ADDRREG) == 88) {
 465                 unsigned long v;
 466                 v = inw(PORT+L_DATAREG);
 467                 v <<= 16;
 468                 outw(89,PORT+L_ADDRREG);
 469                 v |= inw(PORT+L_DATAREG);
 470                 printk("Version %#08lx, ",v);
 471                 p->features = INIT_RING_BEFORE_START;
 472         }
 473         else {
 474                 printk("ancient LANCE, ");
 475                 p->features = 0x0;
 476         }
 477
 478         if(test_bit(0,&cards[i].config)) {
 479                 dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3];
 480                 dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3];
 481                 printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma);
 482         }
 483         else {
 484                 if(dev->dma == 0) {
 485                 /* 'stuck test' from lance.c */
 486                         long dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) |
 487                                             (inb(DMA2_STAT_REG) & 0xf0);
 488                         for(i=1;i<5;i++) {
 489                                 int dma = dmatab[i];
 490                                 if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))
 491                                         continue;
 492
 493                                 flags=claim_dma_lock();
 494                                 disable_dma(dma);
 495                                 set_dma_mode(dma,DMA_MODE_CASCADE);
 496                                 enable_dma(dma);
 497                                 release_dma_lock(flags);
 498
 499                                 ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */
 500
 501                                 flags=claim_dma_lock();
 502                                 disable_dma(dma);
 503                                 free_dma(dma);
 504                                 release_dma_lock(flags);
 505
 506                                 if(readreg(CSR0) & CSR0_IDON)
 507                                         break;
 508                         }
 509                         if(i == 5) {
 510                                 printk("failed.\n");
 511                                 printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name);
 512                                 ni65_free_buffer(p);
 513                                 release_region(ioaddr, cards[p->cardno].total_size);
 514                                 return -EAGAIN;
 515                         }
 516                         dev->dma = dmatab[i];
 517                         printk("DMA %d (autodetected), ",dev->dma);
 518                 }
 519                 else
 520                         printk("DMA %d (assigned), ",dev->dma);
 521
 522                 if(dev->irq < 2)
 523                 {
 524                         unsigned long irq_mask;
 525
 526                         ni65_init_lance(p,dev->dev_addr,0,0);
 527                         irq_mask = probe_irq_on();
 528                         writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */
 529                         msleep(20);
 530                         dev->irq = probe_irq_off(irq_mask);
 531                         if(!dev->irq)
 532                         {
 533                                 printk("Failed to detect IRQ line!\n");
 534                                 ni65_free_buffer(p);
 535                                 release_region(ioaddr, cards[p->cardno].total_size);
 536                                 return -EAGAIN;
 537                         }
 538                         printk("IRQ %d (autodetected).\n",dev->irq);
 539                 }
 540                 else
 541                         printk("IRQ %d (assigned).\n",dev->irq);
 542         }
 543
 544         if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0)
 545         {
 546                 printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
 547                 ni65_free_buffer(p);
 548                 release_region(ioaddr, cards[p->cardno].total_size);
 549                 return -EAGAIN;
 550         }
 551
 552         dev->base_addr = ioaddr;
 553         SET_MODULE_OWNER(dev);
 554         dev->open               = ni65_open;
 555         dev->stop               = ni65_close;
 556         dev->hard_start_xmit    = ni65_send_packet;
 557         dev->tx_timeout         = ni65_timeout;
 558         dev->watchdog_timeo     = HZ/2;
 559         dev->get_stats          = ni65_get_stats;
 560         dev->set_multicast_list = set_multicast_list;
 561         return 0; /* everything is OK */
 562 }
 563
 564 /*
 565  * set lance register and trigger init
 566  */
 567 static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode)
 568 {
 569         int i;
 570         u32 pib;
 571
 572         writereg(CSR0_CLRALL|CSR0_STOP,CSR0);
 573
 574         for(i=0;i<6;i++)
 575                 p->ib.eaddr[i] = daddr[i];
 576
 577         for(i=0;i<8;i++)
 578                 p->ib.filter[i] = filter;
 579         p->ib.mode = mode;
 580
 581         p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK;
 582         p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK;
 583         writereg(0,CSR3);       /* busmaster/no word-swap */
 584         pib = (u32) isa_virt_to_bus(&p->ib);
 585         writereg(pib & 0xffff,CSR1);
 586         writereg(pib >> 16,CSR2);
 587
 588         writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 589
 590         for(i=0;i<32;i++)
 591         {
 592                 mdelay(4);
 593                 if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) )
 594                         break; /* init ok ? */
 595         }
 596 }
 597
 598 /*
 599  * allocate memory area and check the 16MB border
 600  */
 601 static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type)
 602 {
 603         struct sk_buff *skb=NULL;
 604         unsigned char *ptr;
 605         void *ret;
 606
 607         if(type) {
 608                 ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA);
 609                 if(!skb) {
 610                         printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
 611                         return NULL;
 612                 }
 613                 skb->dev = dev;
 614                 skb_reserve(skb,2+16);
 615                 skb_put(skb,R_BUF_SIZE);         /* grab the whole space .. (not necessary) */
 616                 ptr = skb->data;
 617         }
 618         else {
 619                 ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA);
 620                 if(!ret) {
 621                         printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
 622                         return NULL;
 623                 }
 624         }
 625         if( (u32) virt_to_phys(ptr+size) > 0x1000000) {
 626                 printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what);
 627                 if(type)
 628                         kfree_skb(skb);
 629                 else
 630                         kfree(ptr);
 631                 return NULL;
 632         }
 633         return ret;
 634 }
 635
 636 /*
 637  * allocate all memory structures .. send/recv buffers etc ...
 638  */
 639 static int ni65_alloc_buffer(struct net_device *dev)
 640 {
 641         unsigned char *ptr;
 642         struct priv *p;
 643         int i;
 644
 645         /*
 646          * we need 8-aligned memory ..
 647          */
 648         ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0);
 649         if(!ptr)
 650                 return -ENOMEM;
 651
 652         p = dev->priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
 653         memset((char *) dev->priv,0,sizeof(struct priv));
 654         p->self = ptr;
 655
 656         for(i=0;i<TMDNUM;i++)
 657         {
 658 #ifdef XMT_VIA_SKB
 659                 p->tmd_skb[i] = NULL;
 660 #endif
 661                 p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
 662                 if(!p->tmdbounce[i]) {
 663                         ni65_free_buffer(p);
 664                         return -ENOMEM;
 665                 }
 666         }
 667
 668         for(i=0;i<RMDNUM;i++)
 669         {
 670 #ifdef RCV_VIA_SKB
 671                 p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
 672                 if(!p->recv_skb[i]) {
 673                         ni65_free_buffer(p);
 674                         return -ENOMEM;
 675                 }
 676 #else
 677                 p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
 678                 if(!p->recvbounce[i]) {
 679                         ni65_free_buffer(p);
 680                         return -ENOMEM;
 681                 }
 682 #endif
 683         }
 684
 685         return 0; /* everything is OK */
 686 }
 687
 688 /*
 689  * free buffers and private struct
 690  */
 691 static void ni65_free_buffer(struct priv *p)
 692 {
 693         int i;
 694
 695         if(!p)
 696                 return;
 697
 698         for(i=0;i<TMDNUM;i++) {
 699                 if(p->tmdbounce[i])
 700                         kfree(p->tmdbounce[i]);
 701 #ifdef XMT_VIA_SKB
 702                 if(p->tmd_skb[i])
 703                         dev_kfree_skb(p->tmd_skb[i]);
 704 #endif
 705         }
 706
 707         for(i=0;i<RMDNUM;i++)
 708         {
 709 #ifdef RCV_VIA_SKB
 710                 if(p->recv_skb[i])
 711                         dev_kfree_skb(p->recv_skb[i]);
 712 #else
 713                 if(p->recvbounce[i])
 714                         kfree(p->recvbounce[i]);
 715 #endif
 716         }
 717         if(p->self)
 718                 kfree(p->self);
 719 }
 720
 721
 722 /*
 723  * stop and (re)start lance .. e.g after an error
 724  */
 725 static void ni65_stop_start(struct net_device *dev,struct priv *p)
 726 {
 727         int csr0 = CSR0_INEA;
 728
 729         writedatareg(CSR0_STOP);
 730
 731         if(debuglevel > 1)
 732                 printk(KERN_DEBUG "ni65_stop_start\n");
 733
 734         if(p->features & INIT_RING_BEFORE_START) {
 735                 int i;
 736 #ifdef XMT_VIA_SKB
 737                 struct sk_buff *skb_save[TMDNUM];
 738 #endif
 739                 unsigned long buffer[TMDNUM];
 740                 short blen[TMDNUM];
 741
 742                 if(p->xmit_queued) {
 743                         while(1) {
 744                                 if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN))
 745                                         break;
 746                                 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 747                                 if(p->tmdlast == p->tmdnum)
 748                                         break;
 749                         }
 750                 }
 751
 752                 for(i=0;i<TMDNUM;i++) {
 753                         struct tmd *tmdp = p->tmdhead + i;
 754 #ifdef XMT_VIA_SKB
 755                         skb_save[i] = p->tmd_skb[i];
 756 #endif
 757                         buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer);
 758                         blen[i] = tmdp->blen;
 759                         tmdp->u.s.status = 0x0;
 760                 }
 761
 762                 for(i=0;i<RMDNUM;i++) {
 763                         struct rmd *rmdp = p->rmdhead + i;
 764                         rmdp->u.s.status = RCV_OWN;
 765                 }
 766                 p->tmdnum = p->xmit_queued = 0;
 767                 writedatareg(CSR0_STRT | csr0);
 768
 769                 for(i=0;i<TMDNUM;i++) {
 770                         int num = (i + p->tmdlast) & (TMDNUM-1);
 771                         p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */
 772                         p->tmdhead[i].blen = blen[num];
 773                         if(p->tmdhead[i].u.s.status & XMIT_OWN) {
 774                                  p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
 775                                  p->xmit_queued = 1;
 776          writedatareg(CSR0_TDMD | CSR0_INEA | csr0);
 777                         }
 778 #ifdef XMT_VIA_SKB
 779                         p->tmd_skb[i] = skb_save[num];
 780 #endif
 781                 }
 782                 p->rmdnum = p->tmdlast = 0;
 783                 if(!p->lock)
 784                         if (p->tmdnum || !p->xmit_queued)
 785                                 netif_wake_queue(dev);
 786                 dev->trans_start = jiffies;
 787         }
 788         else
 789                 writedatareg(CSR0_STRT | csr0);
 790 }
 791
 792 /*
 793  * init lance (write init-values .. init-buffers) (open-helper)
 794  */
 795 static int ni65_lance_reinit(struct net_device *dev)
 796 {
 797          int i;
 798          struct priv *p = (struct priv *) dev->priv;
 799          unsigned long flags;
 800
 801          p->lock = 0;
 802          p->xmit_queued = 0;
 803
 804          flags=claim_dma_lock();
 805          disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 806          set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 807          enable_dma(dev->dma);
 808          release_dma_lock(flags);
 809
 810          outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
 811          if( (i=readreg(CSR0) ) != 0x4)
 812          {
 813                  printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name,
 814                                                         cards[p->cardno].cardname,(int) i);
 815                  flags=claim_dma_lock();
 816                  disable_dma(dev->dma);
 817                  release_dma_lock(flags);
 818                  return 0;
 819          }
 820
 821          p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0;
 822          for(i=0;i<TMDNUM;i++)
 823          {
 824                  struct tmd *tmdp = p->tmdhead + i;
 825 #ifdef XMT_VIA_SKB
 826                  if(p->tmd_skb[i]) {
 827                          dev_kfree_skb(p->tmd_skb[i]);
 828                          p->tmd_skb[i] = NULL;
 829                  }
 830 #endif
 831                  tmdp->u.buffer = 0x0;
 832                  tmdp->u.s.status = XMIT_START | XMIT_END;
 833                  tmdp->blen = tmdp->status2 = 0;
 834          }
 835
 836          for(i=0;i<RMDNUM;i++)
 837          {
 838                  struct rmd *rmdp = p->rmdhead + i;
 839 #ifdef RCV_VIA_SKB
 840                  rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data);
 841 #else
 842                  rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]);
 843 #endif
 844                  rmdp->blen = -(R_BUF_SIZE-8);
 845                  rmdp->mlen = 0;
 846                  rmdp->u.s.status = RCV_OWN;
 847          }
 848
 849          if(dev->flags & IFF_PROMISC)
 850                  ni65_init_lance(p,dev->dev_addr,0x00,M_PROM);
 851          else if(dev->mc_count || dev->flags & IFF_ALLMULTI)
 852                  ni65_init_lance(p,dev->dev_addr,0xff,0x0);
 853          else
 854                  ni65_init_lance(p,dev->dev_addr,0x00,0x00);
 855
 856         /*
 857          * ni65_set_lance_mem() sets L_ADDRREG to CSR0
 858          * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED
 859          */
 860
 861          if(inw(PORT+L_DATAREG) & CSR0_IDON)    {
 862                  ni65_set_performance(p);
 863                                          /* init OK: start lance , enable interrupts */
 864                  writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT);
 865                  return 1; /* ->OK */
 866          }
 867          printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 868          flags=claim_dma_lock();
 869          disable_dma(dev->dma);
 870          release_dma_lock(flags);
 871          return 0; /* ->Error */
 872 }
 873
 874 /*
 875  * interrupt handler
 876  */
 877 static irqreturn_t ni65_interrupt(int irq, void * dev_id, struct pt_regs * regs)
 878 {
 879         int csr0 = 0;
 880         struct net_device *dev = dev_id;
 881         struct priv *p;
 882         int bcnt = 32;
 883
 884         p = (struct priv *) dev->priv;
 885
 886         spin_lock(&p->ring_lock);
 887
 888         while(--bcnt) {
 889                 csr0 = inw(PORT+L_DATAREG);
 890
 891 #if 0
 892                 writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */
 893 #else
 894                 writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */
 895 #endif
 896
 897                 if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT)))
 898                         break;
 899
 900                 if(csr0 & CSR0_RINT) /* RECV-int? */
 901                         ni65_recv_intr(dev,csr0);
 902                 if(csr0 & CSR0_TINT) /* XMIT-int? */
 903                         ni65_xmit_intr(dev,csr0);
 904
 905                 if(csr0 & CSR0_ERR)
 906                 {
 907                         struct priv *p = (struct priv *) dev->priv;
 908                         if(debuglevel > 1)
 909                                 printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0);
 910                         if(csr0 & CSR0_BABL)
 911                                 p->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                                 p->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         struct priv *p = (struct priv *) dev->priv;
 933         int i,k,num1,num2;
 934         for(i=RMDNUM-1;i>0;i--) {
 935                  num2 = (p->rmdnum + i) & (RMDNUM-1);
 936                  if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
 937                                 break;
 938         }
 939
 940         if(i) {
 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                         int k;
 953                         buf1 = buf;
 954                         for(k=0;k<RMDNUM;k++) {
 955                                 sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */
 956                                 buf1 += 3;
 957                         }
 958                         *buf1 = 0;
 959                         printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf);
 960                 }
 961
 962                 p->rmdnum = num1;
 963                 ni65_recv_intr(dev,csr0);
 964                 if((p->rmdhead[num2].u.s.status & RCV_OWN))
 965                         break;  /* ok, we are 'in sync' again */
 966         }
 967         else
 968                 break;
 969  }
 970 }
 971 #endif
 972
 973         if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
 974                 printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name);
 975                 ni65_stop_start(dev,p);
 976         }
 977         else
 978                 writedatareg(CSR0_INEA);
 979
 980         spin_unlock(&p->ring_lock);
 981         return IRQ_HANDLED;
 982 }
 983
 984 /*
 985  * We have received an Xmit-Interrupt ..
 986  * send a new packet if necessary
 987  */
 988 static void ni65_xmit_intr(struct net_device *dev,int csr0)
 989 {
 990         struct priv *p = (struct priv *) dev->priv;
 991
 992         while(p->xmit_queued)
 993         {
 994                 struct tmd *tmdp = p->tmdhead + p->tmdlast;
 995                 int tmdstat = tmdp->u.s.status;
 996
 997                 if(tmdstat & XMIT_OWN)
 998                         break;
 999
1000                 if(tmdstat & XMIT_ERR)
1001                 {
1002 #if 0
1003                         if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3)
1004                                 printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name);
1005 #endif
1006                  /* checking some errors */
1007                         if(tmdp->status2 & XMIT_RTRY)
1008                                 p->stats.tx_aborted_errors++;
1009                         if(tmdp->status2 & XMIT_LCAR)
1010                                 p->stats.tx_carrier_errors++;
1011                         if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) {
1012                 /* this stops the xmitter */
1013                                 p->stats.tx_fifo_errors++;
1014                                 if(debuglevel > 0)
1015                                         printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name);
1016                                 if(p->features & INIT_RING_BEFORE_START) {
1017                                         tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;    /* test: resend this frame */
1018                                         ni65_stop_start(dev,p);
1019                                         break;  /* no more Xmit processing .. */
1020                                 }
1021                                 else
1022                                  ni65_stop_start(dev,p);
1023                         }
1024                         if(debuglevel > 2)
1025                                 printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2);
1026                         if(!(csr0 & CSR0_BABL)) /* don't count errors twice */
1027                                 p->stats.tx_errors++;
1028                         tmdp->status2 = 0;
1029                 }
1030                 else {
1031                         p->stats.tx_bytes -= (short)(tmdp->blen);
1032                         p->stats.tx_packets++;
1033                 }
1034
1035 #ifdef XMT_VIA_SKB
1036                 if(p->tmd_skb[p->tmdlast]) {
1037                          dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]);
1038                          p->tmd_skb[p->tmdlast] = NULL;
1039                 }
1040 #endif
1041
1042                 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
1043                 if(p->tmdlast == p->tmdnum)
1044                         p->xmit_queued = 0;
1045         }
1046         netif_wake_queue(dev);
1047 }
1048
1049 /*
1050  * We have received a packet
1051  */
1052 static void ni65_recv_intr(struct net_device *dev,int csr0)
1053 {
1054         struct rmd *rmdp;
1055         int rmdstat,len;
1056         int cnt=0;
1057         struct priv *p = (struct priv *) dev->priv;
1058
1059         rmdp = p->rmdhead + p->rmdnum;
1060         while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
1061         {
1062                 cnt++;
1063                 if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */
1064                 {
1065                         if(!(rmdstat & RCV_ERR)) {
1066                                 if(rmdstat & RCV_START)
1067                                 {
1068                                         p->stats.rx_length_errors++;
1069                                         printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff);
1070                                 }
1071                         }
1072                         else {
1073                                 if(debuglevel > 2)
1074                                         printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n",
1075                                                                         dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) );
1076                                 if(rmdstat & RCV_FRAM)
1077                                         p->stats.rx_frame_errors++;
1078                                 if(rmdstat & RCV_OFLO)
1079                                         p->stats.rx_over_errors++;
1080                                 if(rmdstat & RCV_CRC)
1081                                         p->stats.rx_crc_errors++;
1082                                 if(rmdstat & RCV_BUF_ERR)
1083                                         p->stats.rx_fifo_errors++;
1084                         }
1085                         if(!(csr0 & CSR0_MISS)) /* don't count errors twice */
1086                                 p->stats.rx_errors++;
1087                 }
1088                 else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60)
1089                 {
1090 #ifdef RCV_VIA_SKB
1091                         struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC);
1092                         if (skb)
1093                                 skb_reserve(skb,16);
1094 #else
1095                         struct sk_buff *skb = dev_alloc_skb(len+2);
1096 #endif
1097                         if(skb)
1098                         {
1099                                 skb_reserve(skb,2);
1100         skb->dev = dev;
1101 #ifdef RCV_VIA_SKB
1102                                 if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) {
1103                                         skb_put(skb,len);
1104                                         eth_copy_and_sum(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len,0);
1105                                 }
1106                                 else {
1107                                         struct sk_buff *skb1 = p->recv_skb[p->rmdnum];
1108                                         skb_put(skb,R_BUF_SIZE);
1109                                         p->recv_skb[p->rmdnum] = skb;
1110                                         rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1111                                         skb = skb1;
1112                                         skb_trim(skb,len);
1113                                 }
1114 #else
1115                                 skb_put(skb,len);
1116                                 eth_copy_and_sum(skb, (unsigned char *) p->recvbounce[p->rmdnum],len,0);
1117 #endif
1118                                 p->stats.rx_packets++;
1119                                 p->stats.rx_bytes += len;
1120                                 skb->protocol=eth_type_trans(skb,dev);
1121                                 netif_rx(skb);
1122                                 dev->last_rx = jiffies;
1123                         }
1124                         else
1125                         {
1126                                 printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name);
1127                                 p->stats.rx_dropped++;
1128                         }
1129                 }
1130                 else {
1131                         printk(KERN_INFO "%s: received runt packet\n",dev->name);
1132                         p->stats.rx_errors++;
1133                 }
1134                 rmdp->blen = -(R_BUF_SIZE-8);
1135                 rmdp->mlen = 0;
1136                 rmdp->u.s.status = RCV_OWN; /* change owner */
1137                 p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1);
1138                 rmdp = p->rmdhead + p->rmdnum;
1139         }
1140 }
1141
1142 /*
1143  * kick xmitter ..
1144  */
1145
1146 static void ni65_timeout(struct net_device *dev)
1147 {
1148         int i;
1149         struct priv *p = (struct priv *) dev->priv;
1150
1151         printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name);
1152         for(i=0;i<TMDNUM;i++)
1153                 printk("%02x ",p->tmdhead[i].u.s.status);
1154         printk("\n");
1155         ni65_lance_reinit(dev);
1156         dev->trans_start = jiffies;
1157         netif_wake_queue(dev);
1158 }
1159
1160 /*
1161  *      Send a packet
1162  */
1163
1164 static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev)
1165 {
1166         struct priv *p = (struct priv *) dev->priv;
1167
1168         netif_stop_queue(dev);
1169
1170         if (test_and_set_bit(0, (void*)&p->lock)) {
1171                 printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
1172                 return 1;
1173         }
1174
1175         {
1176                 short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1177                 struct tmd *tmdp;
1178                 unsigned long flags;
1179
1180 #ifdef XMT_VIA_SKB
1181                 if( (unsigned long) (skb->data + skb->len) > 0x1000000) {
1182 #endif
1183
1184                         memcpy((char *) p->tmdbounce[p->tmdbouncenum] ,(char *)skb->data,
1185                                                          (skb->len > T_BUF_SIZE) ? T_BUF_SIZE : skb->len);
1186                         if (len > skb->len)
1187                                 memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len);
1188                         dev_kfree_skb (skb);
1189
1190                         spin_lock_irqsave(&p->ring_lock, flags);
1191                         tmdp = p->tmdhead + p->tmdnum;
1192                         tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]);
1193                         p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1);
1194
1195 #ifdef XMT_VIA_SKB
1196                 }
1197                 else {
1198                         spin_lock_irqsave(&p->ring_lock, flags);
1199
1200                         tmdp = p->tmdhead + p->tmdnum;
1201                         tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1202                         p->tmd_skb[p->tmdnum] = skb;
1203                 }
1204 #endif
1205                 tmdp->blen = -len;
1206
1207                 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
1208                 writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
1209
1210                 p->xmit_queued = 1;
1211                 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
1212
1213                 if(p->tmdnum != p->tmdlast)
1214                         netif_wake_queue(dev);
1215
1216                 p->lock = 0;
1217                 dev->trans_start = jiffies;
1218
1219                 spin_unlock_irqrestore(&p->ring_lock, flags);
1220         }
1221
1222         return 0;
1223 }
1224
1225 static struct net_device_stats *ni65_get_stats(struct net_device *dev)
1226 {
1227
1228 #if 0
1229         int i;
1230         struct priv *p = (struct priv *) dev->priv;
1231         for(i=0;i<RMDNUM;i++)
1232         {
1233                 struct rmd *rmdp = p->rmdhead + ((p->rmdnum + i) & (RMDNUM-1));
1234                 printk("%02x ",rmdp->u.s.status);
1235         }
1236         printk("\n");
1237 #endif
1238
1239         return &((struct priv *) dev->priv)->stats;
1240 }
1241
1242 static void set_multicast_list(struct net_device *dev)
1243 {
1244         if(!ni65_lance_reinit(dev))
1245                 printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name);
1246         netif_wake_queue(dev);
1247 }
1248
1249 #ifdef MODULE
1250 static struct net_device *dev_ni65;
1251
1252 module_param(irq, int, 0);
1253 module_param(io, int, 0);
1254 module_param(dma, int, 0);
1255 MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
1256 MODULE_PARM_DESC(io, "ni6510 I/O base address");
1257 MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
1258
1259 int init_module(void)
1260 {
1261         dev_ni65 = ni65_probe(-1);
1262         return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0;
1263 }
1264
1265 void cleanup_module(void)
1266 {
1267         unregister_netdev(dev_ni65);
1268         cleanup_card(dev_ni65);
1269         free_netdev(dev_ni65);
1270 }
1271 #endif /* MODULE */
1272
1273 MODULE_LICENSE("GPL");
1274
1275 /*
1276  * END of ni65.c
1277  */