drivers/net/ethernet/amd/ni65.c

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This source file includes following definitions.
ni65_set_performance
ni65_open
ni65_close
cleanup_card
ni65_probe
ni65_probe1
ni65_init_lance
ni65_alloc_mem
ni65_alloc_buffer
ni65_free_buffer
ni65_stop_start
ni65_lance_reinit
ni65_interrupt
ni65_xmit_intr
ni65_recv_intr
ni65_timeout
ni65_send_packet
set_multicast_list
init_module
cleanup_module
   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 const int ports[] = { 0x360, 0x300, 0x320, 0x340, 0 };
 365         const 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_rx_mode        = set_multicast_list,
 410         .ndo_set_mac_address    = eth_mac_addr,
 411         .ndo_validate_addr      = eth_validate_addr,
 412 };
 413 
 414 /*
 415  * this is the real card probe ..
 416  */
 417 static int __init ni65_probe1(struct net_device *dev,int ioaddr)
 418 {
 419         int i,j;
 420         struct priv *p;
 421         unsigned long flags;
 422 
 423         dev->irq = irq;
 424         dev->dma = dma;
 425 
 426         for(i=0;i<NUM_CARDS;i++) {
 427                 if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname))
 428                         continue;
 429                 if(cards[i].id_offset >= 0) {
 430                         if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 ||
 431                                  inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) {
 432                                  release_region(ioaddr, cards[i].total_size);
 433                                  continue;
 434                         }
 435                 }
 436                 if(cards[i].vendor_id) {
 437                         for(j=0;j<3;j++)
 438                                 if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j])
 439                                         release_region(ioaddr, cards[i].total_size);
 440                 }
 441                 break;
 442         }
 443         if(i == NUM_CARDS)
 444                 return -ENODEV;
 445 
 446         for(j=0;j<6;j++)
 447                 dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j);
 448 
 449         if( (j=ni65_alloc_buffer(dev)) < 0) {
 450                 release_region(ioaddr, cards[i].total_size);
 451                 return j;
 452         }
 453         p = dev->ml_priv;
 454         p->cmdr_addr = ioaddr + cards[i].cmd_offset;
 455         p->cardno = i;
 456         spin_lock_init(&p->ring_lock);
 457 
 458         printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr);
 459 
 460         outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
 461         if( (j=readreg(CSR0)) != 0x4) {
 462                  printk("failed.\n");
 463                  printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j);
 464                  ni65_free_buffer(p);
 465                  release_region(ioaddr, cards[p->cardno].total_size);
 466                  return -EAGAIN;
 467         }
 468 
 469         outw(88,PORT+L_ADDRREG);
 470         if(inw(PORT+L_ADDRREG) == 88) {
 471                 unsigned long v;
 472                 v = inw(PORT+L_DATAREG);
 473                 v <<= 16;
 474                 outw(89,PORT+L_ADDRREG);
 475                 v |= inw(PORT+L_DATAREG);
 476                 printk("Version %#08lx, ",v);
 477                 p->features = INIT_RING_BEFORE_START;
 478         }
 479         else {
 480                 printk("ancient LANCE, ");
 481                 p->features = 0x0;
 482         }
 483 
 484         if(test_bit(0,&cards[i].config)) {
 485                 dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3];
 486                 dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3];
 487                 printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma);
 488         }
 489         else {
 490                 if(dev->dma == 0) {
 491                 /* 'stuck test' from lance.c */
 492                         unsigned long dma_channels =
 493                                 ((inb(DMA1_STAT_REG) >> 4) & 0x0f)
 494                                 | (inb(DMA2_STAT_REG) & 0xf0);
 495                         for(i=1;i<5;i++) {
 496                                 int dma = dmatab[i];
 497                                 if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))
 498                                         continue;
 499 
 500                                 flags=claim_dma_lock();
 501                                 disable_dma(dma);
 502                                 set_dma_mode(dma,DMA_MODE_CASCADE);
 503                                 enable_dma(dma);
 504                                 release_dma_lock(flags);
 505 
 506                                 ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */
 507 
 508                                 flags=claim_dma_lock();
 509                                 disable_dma(dma);
 510                                 free_dma(dma);
 511                                 release_dma_lock(flags);
 512 
 513                                 if(readreg(CSR0) & CSR0_IDON)
 514                                         break;
 515                         }
 516                         if(i == 5) {
 517                                 printk("failed.\n");
 518                                 printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name);
 519                                 ni65_free_buffer(p);
 520                                 release_region(ioaddr, cards[p->cardno].total_size);
 521                                 return -EAGAIN;
 522                         }
 523                         dev->dma = dmatab[i];
 524                         printk("DMA %d (autodetected), ",dev->dma);
 525                 }
 526                 else
 527                         printk("DMA %d (assigned), ",dev->dma);
 528 
 529                 if(dev->irq < 2)
 530                 {
 531                         unsigned long irq_mask;
 532 
 533                         ni65_init_lance(p,dev->dev_addr,0,0);
 534                         irq_mask = probe_irq_on();
 535                         writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */
 536                         msleep(20);
 537                         dev->irq = probe_irq_off(irq_mask);
 538                         if(!dev->irq)
 539                         {
 540                                 printk("Failed to detect IRQ line!\n");
 541                                 ni65_free_buffer(p);
 542                                 release_region(ioaddr, cards[p->cardno].total_size);
 543                                 return -EAGAIN;
 544                         }
 545                         printk("IRQ %d (autodetected).\n",dev->irq);
 546                 }
 547                 else
 548                         printk("IRQ %d (assigned).\n",dev->irq);
 549         }
 550 
 551         if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0)
 552         {
 553                 printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
 554                 ni65_free_buffer(p);
 555                 release_region(ioaddr, cards[p->cardno].total_size);
 556                 return -EAGAIN;
 557         }
 558 
 559         dev->base_addr = ioaddr;
 560         dev->netdev_ops = &ni65_netdev_ops;
 561         dev->watchdog_timeo     = HZ/2;
 562 
 563         return 0; /* everything is OK */
 564 }
 565 
 566 /*
 567  * set lance register and trigger init
 568  */
 569 static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode)
 570 {
 571         int i;
 572         u32 pib;
 573 
 574         writereg(CSR0_CLRALL|CSR0_STOP,CSR0);
 575 
 576         for(i=0;i<6;i++)
 577                 p->ib.eaddr[i] = daddr[i];
 578 
 579         for(i=0;i<8;i++)
 580                 p->ib.filter[i] = filter;
 581         p->ib.mode = mode;
 582 
 583         p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK;
 584         p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK;
 585         writereg(0,CSR3);       /* busmaster/no word-swap */
 586         pib = (u32) isa_virt_to_bus(&p->ib);
 587         writereg(pib & 0xffff,CSR1);
 588         writereg(pib >> 16,CSR2);
 589 
 590         writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
 591 
 592         for(i=0;i<32;i++)
 593         {
 594                 mdelay(4);
 595                 if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) )
 596                         break; /* init ok ? */
 597         }
 598 }
 599 
 600 /*
 601  * allocate memory area and check the 16MB border
 602  */
 603 static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type)
 604 {
 605         struct sk_buff *skb=NULL;
 606         unsigned char *ptr;
 607         void *ret;
 608 
 609         if(type) {
 610                 ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA);
 611                 if(!skb) {
 612                         printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
 613                         return NULL;
 614                 }
 615                 skb_reserve(skb,2+16);
 616                 skb_put(skb,R_BUF_SIZE);         /* grab the whole space .. (not necessary) */
 617                 ptr = skb->data;
 618         }
 619         else {
 620                 ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA);
 621                 if(!ret)
 622                         return NULL;
 623         }
 624         if( (u32) virt_to_phys(ptr+size) > 0x1000000) {
 625                 printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what);
 626                 if(type)
 627                         kfree_skb(skb);
 628                 else
 629                         kfree(ptr);
 630                 return NULL;
 631         }
 632         return ret;
 633 }
 634 
 635 /*
 636  * allocate all memory structures .. send/recv buffers etc ...
 637  */
 638 static int ni65_alloc_buffer(struct net_device *dev)
 639 {
 640         unsigned char *ptr;
 641         struct priv *p;
 642         int i;
 643 
 644         /*
 645          * we need 8-aligned memory ..
 646          */
 647         ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0);
 648         if(!ptr)
 649                 return -ENOMEM;
 650 
 651         p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
 652         memset((char *)p, 0, sizeof(struct priv));
 653         p->self = ptr;
 654 
 655         for(i=0;i<TMDNUM;i++)
 656         {
 657 #ifdef XMT_VIA_SKB
 658                 p->tmd_skb[i] = NULL;
 659 #endif
 660                 p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
 661                 if(!p->tmdbounce[i]) {
 662                         ni65_free_buffer(p);
 663                         return -ENOMEM;
 664                 }
 665         }
 666 
 667         for(i=0;i<RMDNUM;i++)
 668         {
 669 #ifdef RCV_VIA_SKB
 670                 p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
 671                 if(!p->recv_skb[i]) {
 672                         ni65_free_buffer(p);
 673                         return -ENOMEM;
 674                 }
 675 #else
 676                 p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
 677                 if(!p->recvbounce[i]) {
 678                         ni65_free_buffer(p);
 679                         return -ENOMEM;
 680                 }
 681 #endif
 682         }
 683 
 684         return 0; /* everything is OK */
 685 }
 686 
 687 /*
 688  * free buffers and private struct
 689  */
 690 static void ni65_free_buffer(struct priv *p)
 691 {
 692         int i;
 693 
 694         if(!p)
 695                 return;
 696 
 697         for(i=0;i<TMDNUM;i++) {
 698                 kfree(p->tmdbounce[i]);
 699 #ifdef XMT_VIA_SKB
 700                 dev_kfree_skb(p->tmd_skb[i]);
 701 #endif
 702         }
 703 
 704         for(i=0;i<RMDNUM;i++)
 705         {
 706 #ifdef RCV_VIA_SKB
 707                 dev_kfree_skb(p->recv_skb[i]);
 708 #else
 709                 kfree(p->recvbounce[i]);
 710 #endif
 711         }
 712         kfree(p->self);
 713 }
 714 
 715 
 716 /*
 717  * stop and (re)start lance .. e.g after an error
 718  */
 719 static void ni65_stop_start(struct net_device *dev,struct priv *p)
 720 {
 721         int csr0 = CSR0_INEA;
 722 
 723         writedatareg(CSR0_STOP);
 724 
 725         if(debuglevel > 1)
 726                 printk(KERN_DEBUG "ni65_stop_start\n");
 727 
 728         if(p->features & INIT_RING_BEFORE_START) {
 729                 int i;
 730 #ifdef XMT_VIA_SKB
 731                 struct sk_buff *skb_save[TMDNUM];
 732 #endif
 733                 unsigned long buffer[TMDNUM];
 734                 short blen[TMDNUM];
 735 
 736                 if(p->xmit_queued) {
 737                         while(1) {
 738                                 if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN))
 739                                         break;
 740                                 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
 741                                 if(p->tmdlast == p->tmdnum)
 742                                         break;
 743                         }
 744                 }
 745 
 746                 for(i=0;i<TMDNUM;i++) {
 747                         struct tmd *tmdp = p->tmdhead + i;
 748 #ifdef XMT_VIA_SKB
 749                         skb_save[i] = p->tmd_skb[i];
 750 #endif
 751                         buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer);
 752                         blen[i] = tmdp->blen;
 753                         tmdp->u.s.status = 0x0;
 754                 }
 755 
 756                 for(i=0;i<RMDNUM;i++) {
 757                         struct rmd *rmdp = p->rmdhead + i;
 758                         rmdp->u.s.status = RCV_OWN;
 759                 }
 760                 p->tmdnum = p->xmit_queued = 0;
 761                 writedatareg(CSR0_STRT | csr0);
 762 
 763                 for(i=0;i<TMDNUM;i++) {
 764                         int num = (i + p->tmdlast) & (TMDNUM-1);
 765                         p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */
 766                         p->tmdhead[i].blen = blen[num];
 767                         if(p->tmdhead[i].u.s.status & XMIT_OWN) {
 768                                  p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
 769                                  p->xmit_queued = 1;
 770          writedatareg(CSR0_TDMD | CSR0_INEA | csr0);
 771                         }
 772 #ifdef XMT_VIA_SKB
 773                         p->tmd_skb[i] = skb_save[num];
 774 #endif
 775                 }
 776                 p->rmdnum = p->tmdlast = 0;
 777                 if(!p->lock)
 778                         if (p->tmdnum || !p->xmit_queued)
 779                                 netif_wake_queue(dev);
 780                 netif_trans_update(dev); /* prevent tx timeout */
 781         }
 782         else
 783                 writedatareg(CSR0_STRT | csr0);
 784 }
 785 
 786 /*
 787  * init lance (write init-values .. init-buffers) (open-helper)
 788  */
 789 static int ni65_lance_reinit(struct net_device *dev)
 790 {
 791          int i;
 792          struct priv *p = dev->ml_priv;
 793          unsigned long flags;
 794 
 795          p->lock = 0;
 796          p->xmit_queued = 0;
 797 
 798          flags=claim_dma_lock();
 799          disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
 800          set_dma_mode(dev->dma,DMA_MODE_CASCADE);
 801          enable_dma(dev->dma);
 802          release_dma_lock(flags);
 803 
 804          outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
 805          if( (i=readreg(CSR0) ) != 0x4)
 806          {
 807                  printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name,
 808                                                         cards[p->cardno].cardname,(int) i);
 809                  flags=claim_dma_lock();
 810                  disable_dma(dev->dma);
 811                  release_dma_lock(flags);
 812                  return 0;
 813          }
 814 
 815          p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0;
 816          for(i=0;i<TMDNUM;i++)
 817          {
 818                  struct tmd *tmdp = p->tmdhead + i;
 819 #ifdef XMT_VIA_SKB
 820                  if(p->tmd_skb[i]) {
 821                          dev_kfree_skb(p->tmd_skb[i]);
 822                          p->tmd_skb[i] = NULL;
 823                  }
 824 #endif
 825                  tmdp->u.buffer = 0x0;
 826                  tmdp->u.s.status = XMIT_START | XMIT_END;
 827                  tmdp->blen = tmdp->status2 = 0;
 828          }
 829 
 830          for(i=0;i<RMDNUM;i++)
 831          {
 832                  struct rmd *rmdp = p->rmdhead + i;
 833 #ifdef RCV_VIA_SKB
 834                  rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data);
 835 #else
 836                  rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]);
 837 #endif
 838                  rmdp->blen = -(R_BUF_SIZE-8);
 839                  rmdp->mlen = 0;
 840                  rmdp->u.s.status = RCV_OWN;
 841          }
 842 
 843          if(dev->flags & IFF_PROMISC)
 844                  ni65_init_lance(p,dev->dev_addr,0x00,M_PROM);
 845          else if (netdev_mc_count(dev) || dev->flags & IFF_ALLMULTI)
 846                  ni65_init_lance(p,dev->dev_addr,0xff,0x0);
 847          else
 848                  ni65_init_lance(p,dev->dev_addr,0x00,0x00);
 849 
 850         /*
 851          * ni65_set_lance_mem() sets L_ADDRREG to CSR0
 852          * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED
 853          */
 854 
 855          if(inw(PORT+L_DATAREG) & CSR0_IDON)    {
 856                  ni65_set_performance(p);
 857                                          /* init OK: start lance , enable interrupts */
 858                  writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT);
 859                  return 1; /* ->OK */
 860          }
 861          printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
 862          flags=claim_dma_lock();
 863          disable_dma(dev->dma);
 864          release_dma_lock(flags);
 865          return 0; /* ->Error */
 866 }
 867 
 868 /*
 869  * interrupt handler
 870  */
 871 static irqreturn_t ni65_interrupt(int irq, void * dev_id)
 872 {
 873         int csr0 = 0;
 874         struct net_device *dev = dev_id;
 875         struct priv *p;
 876         int bcnt = 32;
 877 
 878         p = dev->ml_priv;
 879 
 880         spin_lock(&p->ring_lock);
 881 
 882         while(--bcnt) {
 883                 csr0 = inw(PORT+L_DATAREG);
 884 
 885 #if 0
 886                 writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */
 887 #else
 888                 writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */
 889 #endif
 890 
 891                 if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT)))
 892                         break;
 893 
 894                 if(csr0 & CSR0_RINT) /* RECV-int? */
 895                         ni65_recv_intr(dev,csr0);
 896                 if(csr0 & CSR0_TINT) /* XMIT-int? */
 897                         ni65_xmit_intr(dev,csr0);
 898 
 899                 if(csr0 & CSR0_ERR)
 900                 {
 901                         if(debuglevel > 1)
 902                                 printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0);
 903                         if(csr0 & CSR0_BABL)
 904                                 dev->stats.tx_errors++;
 905                         if(csr0 & CSR0_MISS) {
 906                                 int i;
 907                                 for(i=0;i<RMDNUM;i++)
 908                                         printk("%02x ",p->rmdhead[i].u.s.status);
 909                                 printk("\n");
 910                                 dev->stats.rx_errors++;
 911                         }
 912                         if(csr0 & CSR0_MERR) {
 913                                 if(debuglevel > 1)
 914                                         printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0);
 915                                 ni65_stop_start(dev,p);
 916                         }
 917                 }
 918         }
 919 
 920 #ifdef RCV_PARANOIA_CHECK
 921 {
 922  int j;
 923  for(j=0;j<RMDNUM;j++)
 924  {
 925         int i, num2;
 926         for(i=RMDNUM-1;i>0;i--) {
 927                  num2 = (p->rmdnum + i) & (RMDNUM-1);
 928                  if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
 929                                 break;
 930         }
 931 
 932         if(i) {
 933                 int k, num1;
 934                 for(k=0;k<RMDNUM;k++) {
 935                         num1 = (p->rmdnum + k) & (RMDNUM-1);
 936                         if(!(p->rmdhead[num1].u.s.status & RCV_OWN))
 937                                 break;
 938                 }
 939                 if(!k)
 940                         break;
 941 
 942                 if(debuglevel > 0)
 943                 {
 944                         char buf[256],*buf1;
 945                         buf1 = buf;
 946                         for(k=0;k<RMDNUM;k++) {
 947                                 sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */
 948                                 buf1 += 3;
 949                         }
 950                         *buf1 = 0;
 951                         printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf);
 952                 }
 953 
 954                 p->rmdnum = num1;
 955                 ni65_recv_intr(dev,csr0);
 956                 if((p->rmdhead[num2].u.s.status & RCV_OWN))
 957                         break;  /* ok, we are 'in sync' again */
 958         }
 959         else
 960                 break;
 961  }
 962 }
 963 #endif
 964 
 965         if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
 966                 printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name);
 967                 ni65_stop_start(dev,p);
 968         }
 969         else
 970                 writedatareg(CSR0_INEA);
 971 
 972         spin_unlock(&p->ring_lock);
 973         return IRQ_HANDLED;
 974 }
 975 
 976 /*
 977  * We have received an Xmit-Interrupt ..
 978  * send a new packet if necessary
 979  */
 980 static void ni65_xmit_intr(struct net_device *dev,int csr0)
 981 {
 982         struct priv *p = dev->ml_priv;
 983 
 984         while(p->xmit_queued)
 985         {
 986                 struct tmd *tmdp = p->tmdhead + p->tmdlast;
 987                 int tmdstat = tmdp->u.s.status;
 988 
 989                 if(tmdstat & XMIT_OWN)
 990                         break;
 991 
 992                 if(tmdstat & XMIT_ERR)
 993                 {
 994 #if 0
 995                         if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3)
 996                                 printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name);
 997 #endif
 998                  /* checking some errors */
 999                         if(tmdp->status2 & XMIT_RTRY)
1000                                 dev->stats.tx_aborted_errors++;
1001                         if(tmdp->status2 & XMIT_LCAR)
1002                                 dev->stats.tx_carrier_errors++;
1003                         if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) {
1004                 /* this stops the xmitter */
1005                                 dev->stats.tx_fifo_errors++;
1006                                 if(debuglevel > 0)
1007                                         printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name);
1008                                 if(p->features & INIT_RING_BEFORE_START) {
1009                                         tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;    /* test: resend this frame */
1010                                         ni65_stop_start(dev,p);
1011                                         break;  /* no more Xmit processing .. */
1012                                 }
1013                                 else
1014                                  ni65_stop_start(dev,p);
1015                         }
1016                         if(debuglevel > 2)
1017                                 printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2);
1018                         if(!(csr0 & CSR0_BABL)) /* don't count errors twice */
1019                                 dev->stats.tx_errors++;
1020                         tmdp->status2 = 0;
1021                 }
1022                 else {
1023                         dev->stats.tx_bytes -= (short)(tmdp->blen);
1024                         dev->stats.tx_packets++;
1025                 }
1026 
1027 #ifdef XMT_VIA_SKB
1028                 if(p->tmd_skb[p->tmdlast]) {
1029                          dev_consume_skb_irq(p->tmd_skb[p->tmdlast]);
1030                          p->tmd_skb[p->tmdlast] = NULL;
1031                 }
1032 #endif
1033 
1034                 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
1035                 if(p->tmdlast == p->tmdnum)
1036                         p->xmit_queued = 0;
1037         }
1038         netif_wake_queue(dev);
1039 }
1040 
1041 /*
1042  * We have received a packet
1043  */
1044 static void ni65_recv_intr(struct net_device *dev,int csr0)
1045 {
1046         struct rmd *rmdp;
1047         int rmdstat,len;
1048         int cnt=0;
1049         struct priv *p = dev->ml_priv;
1050 
1051         rmdp = p->rmdhead + p->rmdnum;
1052         while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
1053         {
1054                 cnt++;
1055                 if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */
1056                 {
1057                         if(!(rmdstat & RCV_ERR)) {
1058                                 if(rmdstat & RCV_START)
1059                                 {
1060                                         dev->stats.rx_length_errors++;
1061                                         printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff);
1062                                 }
1063                         }
1064                         else {
1065                                 if(debuglevel > 2)
1066                                         printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n",
1067                                                                         dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) );
1068                                 if(rmdstat & RCV_FRAM)
1069                                         dev->stats.rx_frame_errors++;
1070                                 if(rmdstat & RCV_OFLO)
1071                                         dev->stats.rx_over_errors++;
1072                                 if(rmdstat & RCV_CRC)
1073                                         dev->stats.rx_crc_errors++;
1074                                 if(rmdstat & RCV_BUF_ERR)
1075                                         dev->stats.rx_fifo_errors++;
1076                         }
1077                         if(!(csr0 & CSR0_MISS)) /* don't count errors twice */
1078                                 dev->stats.rx_errors++;
1079                 }
1080                 else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60)
1081                 {
1082 #ifdef RCV_VIA_SKB
1083                         struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC);
1084                         if (skb)
1085                                 skb_reserve(skb,16);
1086 #else
1087                         struct sk_buff *skb = netdev_alloc_skb(dev, len + 2);
1088 #endif
1089                         if(skb)
1090                         {
1091                                 skb_reserve(skb,2);
1092 #ifdef RCV_VIA_SKB
1093                                 if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) {
1094                                         skb_put(skb,len);
1095                                         skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len);
1096                                 }
1097                                 else {
1098                                         struct sk_buff *skb1 = p->recv_skb[p->rmdnum];
1099                                         skb_put(skb,R_BUF_SIZE);
1100                                         p->recv_skb[p->rmdnum] = skb;
1101                                         rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1102                                         skb = skb1;
1103                                         skb_trim(skb,len);
1104                                 }
1105 #else
1106                                 skb_put(skb,len);
1107                                 skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len);
1108 #endif
1109                                 dev->stats.rx_packets++;
1110                                 dev->stats.rx_bytes += len;
1111                                 skb->protocol=eth_type_trans(skb,dev);
1112                                 netif_rx(skb);
1113                         }
1114                         else
1115                         {
1116                                 printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name);
1117                                 dev->stats.rx_dropped++;
1118                         }
1119                 }
1120                 else {
1121                         printk(KERN_INFO "%s: received runt packet\n",dev->name);
1122                         dev->stats.rx_errors++;
1123                 }
1124                 rmdp->blen = -(R_BUF_SIZE-8);
1125                 rmdp->mlen = 0;
1126                 rmdp->u.s.status = RCV_OWN; /* change owner */
1127                 p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1);
1128                 rmdp = p->rmdhead + p->rmdnum;
1129         }
1130 }
1131 
1132 /*
1133  * kick xmitter ..
1134  */
1135 
1136 static void ni65_timeout(struct net_device *dev)
1137 {
1138         int i;
1139         struct priv *p = dev->ml_priv;
1140 
1141         printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name);
1142         for(i=0;i<TMDNUM;i++)
1143                 printk("%02x ",p->tmdhead[i].u.s.status);
1144         printk("\n");
1145         ni65_lance_reinit(dev);
1146         netif_trans_update(dev); /* prevent tx timeout */
1147         netif_wake_queue(dev);
1148 }
1149 
1150 /*
1151  *      Send a packet
1152  */
1153 
1154 static netdev_tx_t ni65_send_packet(struct sk_buff *skb,
1155                                     struct net_device *dev)
1156 {
1157         struct priv *p = dev->ml_priv;
1158 
1159         netif_stop_queue(dev);
1160 
1161         if (test_and_set_bit(0, (void*)&p->lock)) {
1162                 printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
1163                 return NETDEV_TX_BUSY;
1164         }
1165 
1166         {
1167                 short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1168                 struct tmd *tmdp;
1169                 unsigned long flags;
1170 
1171 #ifdef XMT_VIA_SKB
1172                 if( (unsigned long) (skb->data + skb->len) > 0x1000000) {
1173 #endif
1174 
1175                         skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum],
1176                                       skb->len > T_BUF_SIZE ? T_BUF_SIZE :
1177                                                               skb->len);
1178                         if (len > skb->len)
1179                                 memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len);
1180                         dev_kfree_skb (skb);
1181 
1182                         spin_lock_irqsave(&p->ring_lock, flags);
1183                         tmdp = p->tmdhead + p->tmdnum;
1184                         tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]);
1185                         p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1);
1186 
1187 #ifdef XMT_VIA_SKB
1188                 }
1189                 else {
1190                         spin_lock_irqsave(&p->ring_lock, flags);
1191 
1192                         tmdp = p->tmdhead + p->tmdnum;
1193                         tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1194                         p->tmd_skb[p->tmdnum] = skb;
1195                 }
1196 #endif
1197                 tmdp->blen = -len;
1198 
1199                 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
1200                 writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
1201 
1202                 p->xmit_queued = 1;
1203                 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
1204 
1205                 if(p->tmdnum != p->tmdlast)
1206                         netif_wake_queue(dev);
1207 
1208                 p->lock = 0;
1209 
1210                 spin_unlock_irqrestore(&p->ring_lock, flags);
1211         }
1212 
1213         return NETDEV_TX_OK;
1214 }
1215 
1216 static void set_multicast_list(struct net_device *dev)
1217 {
1218         if(!ni65_lance_reinit(dev))
1219                 printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name);
1220         netif_wake_queue(dev);
1221 }
1222 
1223 #ifdef MODULE
1224 static struct net_device *dev_ni65;
1225 
1226 module_param_hw(irq, int, irq, 0);
1227 module_param_hw(io, int, ioport, 0);
1228 module_param_hw(dma, int, dma, 0);
1229 MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
1230 MODULE_PARM_DESC(io, "ni6510 I/O base address");
1231 MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
1232 
1233 int __init init_module(void)
1234 {
1235         dev_ni65 = ni65_probe(-1);
1236         return PTR_ERR_OR_ZERO(dev_ni65);
1237 }
1238 
1239 void __exit cleanup_module(void)
1240 {
1241         unregister_netdev(dev_ni65);
1242         cleanup_card(dev_ni65);
1243         free_netdev(dev_ni65);
1244 }
1245 #endif /* MODULE */
1246 
1247 MODULE_LICENSE("GPL");
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root/drivers/net/ethernet/amd/ni65.c

DEFINITIONS
