drivers/net/ne.c

/* */
This source file includes following definitions.
ne_probe
ne_probe1
ne_reset_8390
ne_block_input
ne_block_output
init_module
cleanup_module
   1 /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
   2 /*
   3     Written 1992-94 by Donald Becker.
   4 
   5     Copyright 1993 United States Government as represented by the
   6     Director, National Security Agency.
   7 
   8     This software may be used and distributed according to the terms
   9     of the GNU Public License, incorporated herein by reference.
  10 
  11     The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O
  12     Center of Excellence in Space Data and Information Sciences
  13         Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
  14 
  15     This driver should work with many programmed-I/O 8390-based ethernet
  16     boards.  Currently it supports the NE1000, NE2000, many clones,
  17     and some Cabletron products.
  18 
  19     Changelog:
  20 
  21     Paul Gortmaker      : use ENISR_RDC to monitor Tx PIO uploads, made
  22                           sanity checks and bad clone support optional.
  23     Paul Gortmaker      : new reset code, reset card after probe at boot.
  24 
  25 */
  26 
  27 /* Routines for the NatSemi-based designs (NE[12]000). */
  28 
  29 static const char *version =
  30     "ne.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
  31 
  32 
  33 #ifdef MODULE
  34 #include <linux/module.h>
  35 #include <linux/version.h>
  36 #endif
  37 
  38 #include <linux/kernel.h>
  39 #include <linux/sched.h>
  40 #include <linux/errno.h>
  41 #include <asm/system.h>
  42 #include <asm/io.h>
  43 
  44 #include <linux/netdevice.h>
  45 #include <linux/etherdevice.h>
  46 #include "8390.h"
  47 
  48 /* Some defines that people can play with if so inclined. */
  49 
  50 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
  51 #define CONFIG_NE_BAD_CLONES
  52 
  53 /* Do we perform extra sanity checks on stuff ? */
  54 /* #define CONFIG_NE_SANITY */
  55 
  56 /* Do we implement the read before write bugfix ? */
  57 /* #define CONFIG_NE_RW_BUGFIX */
  58 
  59 /* ---- No user-serviceable parts below ---- */
  60 
  61 /* A zero-terminated list of I/O addresses to be probed. */
  62 static unsigned int netcard_portlist[] =
  63 { 0x300, 0x280, 0x320, 0x340, 0x360, 0};
  64 
  65 #ifdef CONFIG_NE_BAD_CLONES
  66 /* A list of bad clones that we none-the-less recognize. */
  67 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
  68 bad_clone_list[] = {
  69     {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
  70     {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
  71     {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh?  */
  72     {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
  73     {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
  74     {"NN1000", "NN2000",  {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
  75     {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}},  /* Outlaw 4-Dimension cards. */
  76     {0,}
  77 };
  78 #endif
  79 
  80 #define NE_BASE  (dev->base_addr)
  81 #define NE_CMD          0x00
  82 #define NE_DATAPORT     0x10    /* NatSemi-defined port window offset. */
  83 #define NE_RESET        0x1f    /* Issue a read to reset, a write to clear. */
  84 #define NE_IO_EXTENT    0x20
  85 
  86 #define NE1SM_START_PG  0x20    /* First page of TX buffer */
  87 #define NE1SM_STOP_PG   0x40    /* Last page +1 of RX ring */
  88 #define NESM_START_PG   0x40    /* First page of TX buffer */
  89 #define NESM_STOP_PG    0x80    /* Last page +1 of RX ring */
  90 
  91 int ne_probe(struct device *dev);
  92 static int ne_probe1(struct device *dev, int ioaddr);
  93 
  94 static void ne_reset_8390(struct device *dev);
  95 static int ne_block_input(struct device *dev, int count,
  96                           char *buf, int ring_offset);
  97 static void ne_block_output(struct device *dev, const int count,
  98                 const unsigned char *buf, const int start_page);
  99 
 100 
 101 /*  Probe for various non-shared-memory ethercards.
 102 
 103    NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
 104    buffer memory space.  NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
 105    the SAPROM, while other supposed NE2000 clones must be detected by their
 106    SA prefix.
 107 
 108    Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
 109    mode results in doubled values, which can be detected and compensated for.
 110 
 111    The probe is also responsible for initializing the card and filling
 112    in the 'dev' and 'ei_status' structures.
 113 
 114    We use the minimum memory size for some ethercard product lines, iff we can't
 115    distinguish models.  You can increase the packet buffer size by setting
 116    PACKETBUF_MEMSIZE.  Reported Cabletron packet buffer locations are:
 117         E1010   starts at 0x100 and ends at 0x2000.
 118         E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
 119         E2010    starts at 0x100 and ends at 0x4000.
 120         E2010-x starts at 0x100 and ends at 0xffff.  */
 121 
 122 #ifdef HAVE_DEVLIST
 123 struct netdev_entry netcard_drv =
 124 {"ne", ne_probe1, NE_IO_EXTENT, netcard_portlist};
 125 #else
 126 
 127 int ne_probe(struct device *dev)
     /*  */
 128 {
 129     int i;
 130     int base_addr = dev ? dev->base_addr : 0;
 131 
 132     if (base_addr > 0x1ff)      /* Check a single specified location. */
 133         return ne_probe1(dev, base_addr);
 134     else if (base_addr != 0)    /* Don't probe at all. */
 135         return ENXIO;
 136 
 137     for (i = 0; netcard_portlist[i]; i++) {
 138         int ioaddr = netcard_portlist[i];
 139         if (check_region(ioaddr, NE_IO_EXTENT))
 140             continue;
 141         if (ne_probe1(dev, ioaddr) == 0)
 142             return 0;
 143     }
 144 
 145     return ENODEV;
 146 }
 147 #endif
 148 
 149 static int ne_probe1(struct device *dev, int ioaddr)
     /*  */
 150 {
 151     int i;
 152     unsigned char SA_prom[32];
 153     int wordlength = 2;
 154     const char *name = NULL;
 155     int start_page, stop_page;
 156     int neX000, ctron;
 157     int reg0 = inb_p(ioaddr);
 158 
 159     if (reg0 == 0xFF)
 160         return ENODEV;
 161 
 162     /* Do a preliminary verification that we have a 8390. */
 163     {   int regd;
 164         outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
 165         regd = inb_p(ioaddr + 0x0d);
 166         outb_p(0xff, ioaddr + 0x0d);
 167         outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
 168         inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
 169         if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
 170             outb_p(reg0, ioaddr);
 171             outb_p(regd, ioaddr + 0x0d);        /* Restore the old values. */
 172             return ENODEV;
 173         }
 174     }
 175 
 176     printk("NE*000 ethercard probe at %#3x:", ioaddr);
 177 
 178     /* Reset card. Who knows what dain-bramaged state it was left in. */
 179     {   unsigned long reset_start_time = jiffies;
 180 
 181         /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
 182         outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
 183 
 184         /* wait 20 ms for the dust to settle. */
 185         while (jiffies - reset_start_time < 2*HZ/100) 
 186                 barrier();
 187 
 188         if ((inb_p(ioaddr+EN0_ISR) & ENISR_RESET) == 0) {
 189                 printk(" not found (no reset ack).\n");
 190                 return ENODEV;
 191         }
 192         outb_p(0xff, ioaddr + EN0_ISR);         /* Ack all intr. */
 193     }
 194 
 195     /* Read the 16 bytes of station address PROM.
 196        We must first initialize registers, similar to NS8390_init(eifdev, 0).
 197        We can't reliably read the SAPROM address without this.
 198        (I learned the hard way!). */
 199     {
 200         struct {unsigned char value, offset; } program_seq[] = {
 201             {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
 202             {0x48,      EN0_DCFG},      /* Set byte-wide (0x48) access. */
 203             {0x00,      EN0_RCNTLO},    /* Clear the count regs. */
 204             {0x00,      EN0_RCNTHI},
 205             {0x00,      EN0_IMR},       /* Mask completion irq. */
 206             {0xFF,      EN0_ISR},
 207             {E8390_RXOFF, EN0_RXCR},    /* 0x20  Set to monitor */
 208             {E8390_TXOFF, EN0_TXCR},    /* 0x02  and loopback mode. */
 209             {32,        EN0_RCNTLO},
 210             {0x00,      EN0_RCNTHI},
 211             {0x00,      EN0_RSARLO},    /* DMA starting at 0x0000. */
 212             {0x00,      EN0_RSARHI},
 213             {E8390_RREAD+E8390_START, E8390_CMD},
 214         };
 215         for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
 216             outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
 217 
 218     }
 219     for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
 220         SA_prom[i] = inb(ioaddr + NE_DATAPORT);
 221         SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
 222         if (SA_prom[i] != SA_prom[i+1])
 223             wordlength = 1;
 224     }
 225 
 226     if (wordlength == 2) {
 227         /* We must set the 8390 for word mode. */
 228         outb_p(0x49, ioaddr + EN0_DCFG);
 229         /* We used to reset the ethercard here, but it doesn't seem
 230            to be necessary. */
 231         /* Un-double the SA_prom values. */
 232         for (i = 0; i < 16; i++)
 233             SA_prom[i] = SA_prom[i+i];
 234         start_page = NESM_START_PG;
 235         stop_page = NESM_STOP_PG;
 236     } else {
 237         start_page = NE1SM_START_PG;
 238         stop_page = NE1SM_STOP_PG;
 239     }
 240 
 241     for(i = 0; i < ETHER_ADDR_LEN; i++) {
 242         dev->dev_addr[i] = SA_prom[i];
 243         printk(" %2.2x", SA_prom[i]);
 244     }
 245 
 246     neX000 = (SA_prom[14] == 0x57  &&  SA_prom[15] == 0x57);
 247     ctron =  (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
 248 
 249     /* Set up the rest of the parameters. */
 250     if (neX000) {
 251         name = (wordlength == 2) ? "NE2000" : "NE1000";
 252     } else if (ctron) {
 253         name = "Cabletron";
 254         start_page = 0x01;
 255         stop_page = (wordlength == 2) ? 0x40 : 0x20;
 256     } else {
 257 #ifdef CONFIG_NE_BAD_CLONES
 258         /* Ack!  Well, there might be a *bad* NE*000 clone there.
 259            Check for total bogus addresses. */
 260         for (i = 0; bad_clone_list[i].name8; i++) {
 261             if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
 262                 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
 263                 SA_prom[2] == bad_clone_list[i].SAprefix[2]) {
 264                 if (wordlength == 2) {
 265                     name = bad_clone_list[i].name16;
 266                 } else {
 267                     name = bad_clone_list[i].name8;
 268                 }
 269                 break;
 270             }
 271         }
 272         if (bad_clone_list[i].name8 == NULL) {
 273             printk(" not found (invalid signature %2.2x %2.2x).\n",
 274                    SA_prom[14], SA_prom[15]);
 275             return ENXIO;
 276         }
 277 #else
 278         printk(" not found.\n");
 279         return ENXIO;
 280 #endif
 281 
 282     }
 283 
 284 
 285     if (dev == NULL)
 286         dev = init_etherdev(0, sizeof(struct ei_device), 0);
 287 
 288     if (dev->irq < 2) {
 289         autoirq_setup(0);
 290         outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
 291         outb_p(0x00, ioaddr + EN0_RCNTLO);
 292         outb_p(0x00, ioaddr + EN0_RCNTHI);
 293         outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
 294         outb_p(0x00, ioaddr + EN0_IMR);                 /* Mask it again. */
 295         dev->irq = autoirq_report(0);
 296         if (ei_debug > 2)
 297             printk(" autoirq is %d\n", dev->irq);
 298     } else if (dev->irq == 2)
 299         /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
 300            or don't know which one to set. */
 301         dev->irq = 9;
 302     
 303     /* Snarf the interrupt now.  There's no point in waiting since we cannot
 304        share and the board will usually be enabled. */
 305     {
 306         int irqval = request_irq (dev->irq, ei_interrupt, 0, wordlength==2 ? "ne2000":"ne1000");
 307         if (irqval) {
 308             printk (" unable to get IRQ %d (irqval=%d).\n", dev->irq, irqval);
 309             return EAGAIN;
 310         }
 311     }
 312 
 313     dev->base_addr = ioaddr;
 314 
 315     request_region(ioaddr, NE_IO_EXTENT, wordlength==2 ? "ne2000":"ne1000");
 316 
 317     for(i = 0; i < ETHER_ADDR_LEN; i++)
 318         dev->dev_addr[i] = SA_prom[i];
 319 
 320     ethdev_init(dev);
 321     printk("\n%s: %s found at %#x, using IRQ %d.\n",
 322            dev->name, name, ioaddr, dev->irq);
 323 
 324     if (ei_debug > 0)
 325         printk(version);
 326 
 327     ei_status.name = name;
 328     ei_status.tx_start_page = start_page;
 329     ei_status.stop_page = stop_page;
 330     ei_status.word16 = (wordlength == 2);
 331 
 332     ei_status.rx_start_page = start_page + TX_PAGES;
 333 #ifdef PACKETBUF_MEMSIZE
 334     /* Allow the packet buffer size to be overridden by know-it-alls. */
 335     ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
 336 #endif
 337 
 338     ei_status.reset_8390 = &ne_reset_8390;
 339     ei_status.block_input = &ne_block_input;
 340     ei_status.block_output = &ne_block_output;
 341     NS8390_init(dev, 0);
 342     return 0;
 343 }
 344 
 345 /* Hard reset the card.  This used to pause for the same period that a
 346    8390 reset command required, but that shouldn't be necessary. */
 347 static void
 348 ne_reset_8390(struct device *dev)
     /*  */
 349 {
 350     unsigned long reset_start_time = jiffies;
 351 
 352     if (ei_debug > 1) printk("resetting the 8390 t=%ld...", jiffies);
 353 
 354     /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
 355     outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
 356 
 357     ei_status.txing = 0;
 358     ei_status.dmaing = 0;
 359 
 360     /* This check _should_not_ be necessary, omit eventually. */
 361     while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
 362         if (jiffies - reset_start_time > 2*HZ/100) {
 363             printk("%s: ne_reset_8390() did not complete.\n", dev->name);
 364             break;
 365         }
 366     outb_p(ENISR_RESET, NE_BASE + EN0_ISR);     /* Ack intr. */
 367 }
 368 
 369 /* Block input and output, similar to the Crynwr packet driver.  If you
 370    are porting to a new ethercard, look at the packet driver source for hints.
 371    The NEx000 doesn't share it on-board packet memory -- you have to put
 372    the packet out through the "remote DMA" dataport using outb. */
 373 
 374 static int
 375 ne_block_input(struct device *dev, int count, char *buf, int ring_offset)
     /*  */
 376 {
 377     int nic_base = dev->base_addr;
 378 #ifdef CONFIG_NE_SANITY
 379     int xfer_count = count;
 380 #endif
 381 
 382     /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 383     if (ei_status.dmaing) {
 384         if (ei_debug > 0)
 385             printk("%s: DMAing conflict in ne_block_input "
 386                    "[DMAstat:%d][irqlock:%d][intr:%d].\n",
 387                    dev->name, ei_status.dmaing, ei_status.irqlock,
 388                    dev->interrupt);
 389         return 0;
 390     }
 391     ei_status.dmaing |= 0x01;
 392     outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
 393     outb_p(count & 0xff, nic_base + EN0_RCNTLO);
 394     outb_p(count >> 8, nic_base + EN0_RCNTHI);
 395     outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
 396     outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
 397     outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 398     if (ei_status.word16) {
 399       insw(NE_BASE + NE_DATAPORT,buf,count>>1);
 400       if (count & 0x01) {
 401         buf[count-1] = inb(NE_BASE + NE_DATAPORT);
 402 #ifdef CONFIG_NE_SANITY
 403         xfer_count++;
 404 #endif
 405       }
 406     } else {
 407         insb(NE_BASE + NE_DATAPORT, buf, count);
 408     }
 409 
 410 #ifdef CONFIG_NE_SANITY
 411     /* This was for the ALPHA version only, but enough people have
 412        been encountering problems so it is still here.  If you see
 413        this message you either 1) have a slightly incompatible clone
 414        or 2) have noise/speed problems with your bus. */
 415     if (ei_debug > 1) {         /* DMA termination address check... */
 416         int addr, tries = 20;
 417         do {
 418             /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
 419                -- it's broken for Rx on some cards! */
 420             int high = inb_p(nic_base + EN0_RSARHI);
 421             int low = inb_p(nic_base + EN0_RSARLO);
 422             addr = (high << 8) + low;
 423             if (((ring_offset + xfer_count) & 0xff) == low)
 424                 break;
 425         } while (--tries > 0);
 426         if (tries <= 0)
 427             printk("%s: RX transfer address mismatch,"
 428                    "%#4.4x (expected) vs. %#4.4x (actual).\n",
 429                    dev->name, ring_offset + xfer_count, addr);
 430     }
 431 #endif
 432     outb_p(ENISR_RDC, nic_base + EN0_ISR);      /* Ack intr. */
 433     ei_status.dmaing &= ~0x01;
 434     return ring_offset + count;
 435 }
 436 
 437 static void
 438 ne_block_output(struct device *dev, int count,
     /*  */
 439                 const unsigned char *buf, const int start_page)
 440 {
 441     int nic_base = NE_BASE;
 442     unsigned long dma_start;
 443 #ifdef CONFIG_NE_SANITY
 444     int retries = 0;
 445 #endif
 446 
 447     /* Round the count up for word writes.  Do we need to do this?
 448        What effect will an odd byte count have on the 8390?
 449        I should check someday. */
 450     if (ei_status.word16 && (count & 0x01))
 451       count++;
 452 
 453     /* This *shouldn't* happen. If it does, it's the last thing you'll see */
 454     if (ei_status.dmaing) {
 455         if (ei_debug > 0)
 456             printk("%s: DMAing conflict in ne_block_output."
 457                    "[DMAstat:%d][irqlock:%d][intr:%d]\n",
 458                    dev->name, ei_status.dmaing, ei_status.irqlock,
 459                    dev->interrupt);
 460         return;
 461     }
 462     ei_status.dmaing |= 0x01;
 463     /* We should already be in page 0, but to be safe... */
 464     outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
 465 
 466 #ifdef CONFIG_NE_SANITY
 467  retry:
 468 #endif
 469 
 470 #ifdef NE8390_RW_BUGFIX
 471     /* Handle the read-before-write bug the same way as the
 472        Crynwr packet driver -- the NatSemi method doesn't work.
 473        Actually this doesn't always work either, but if you have
 474        problems with your NEx000 this is better than nothing! */
 475     outb_p(0x42, nic_base + EN0_RCNTLO);
 476     outb_p(0x00,   nic_base + EN0_RCNTHI);
 477     outb_p(0x42, nic_base + EN0_RSARLO);
 478     outb_p(0x00, nic_base + EN0_RSARHI);
 479     outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
 480     /* Make certain that the dummy read has occurred. */
 481     SLOW_DOWN_IO;
 482     SLOW_DOWN_IO;
 483     SLOW_DOWN_IO;
 484 #endif
 485 
 486     outb_p(ENISR_RDC, nic_base + EN0_ISR);
 487 
 488    /* Now the normal output. */
 489     outb_p(count & 0xff, nic_base + EN0_RCNTLO);
 490     outb_p(count >> 8,   nic_base + EN0_RCNTHI);
 491     outb_p(0x00, nic_base + EN0_RSARLO);
 492     outb_p(start_page, nic_base + EN0_RSARHI);
 493 
 494     outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
 495     if (ei_status.word16) {
 496         outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
 497     } else {
 498         outsb(NE_BASE + NE_DATAPORT, buf, count);
 499     }
 500 
 501     dma_start = jiffies;
 502 
 503 #ifdef CONFIG_NE_SANITY
 504     /* This was for the ALPHA version only, but enough people have
 505        been encountering problems so it is still here. */
 506     if (ei_debug > 1) {         /* DMA termination address check... */
 507         int addr, tries = 20;
 508         do {
 509             int high = inb_p(nic_base + EN0_RSARHI);
 510             int low = inb_p(nic_base + EN0_RSARLO);
 511             addr = (high << 8) + low;
 512             if ((start_page << 8) + count == addr)
 513                 break;
 514         } while (--tries > 0);
 515         if (tries <= 0) {
 516             printk("%s: Tx packet transfer address mismatch,"
 517                    "%#4.4x (expected) vs. %#4.4x (actual).\n",
 518                    dev->name, (start_page << 8) + count, addr);
 519             if (retries++ == 0)
 520                 goto retry;
 521         }
 522     }
 523 #endif
 524 
 525     while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
 526         if (jiffies - dma_start > 2*HZ/100) {           /* 20ms */
 527                 printk("%s: timeout waiting for Tx RDC.\n", dev->name);
 528                 ne_reset_8390(dev);
 529                 NS8390_init(dev,1);
 530                 break;
 531         }
 532 
 533     outb_p(ENISR_RDC, nic_base + EN0_ISR);      /* Ack intr. */
 534     ei_status.dmaing &= ~0x01;
 535     return;
 536 }
 537 
 538 #ifdef MODULE
 539 char kernel_version[] = UTS_RELEASE;
 540 static char devicename[9] = { 0, };
 541 static struct device dev_ne2000 = {
 542         devicename, /* device name is inserted by linux/drivers/net/net_init.c */
 543         0, 0, 0, 0,
 544         0, 0,
 545         0, 0, 0, NULL, ne_probe };
 546 
 547 int io = 0x300;
 548 int irq = 0;
 549 
 550 int init_module(void)
     /*  */
 551 {
 552         if (io == 0)
 553                 printk("ne: You should not use auto-probing with insmod!\n");
 554         dev_ne2000.base_addr = io;
 555         dev_ne2000.irq       = irq;
 556         if (register_netdev(&dev_ne2000) != 0)
 557                 return -EIO;
 558         return 0;
 559 }
 560 
 561 void
 562 cleanup_module(void)
     /*  */
 563 {
 564         if (MOD_IN_USE)
 565                 printk("ne2000: device busy, remove delayed\n");
 566         else
 567         {
 568                 unregister_netdev(&dev_ne2000);
 569 
 570                 /* If we don't do this, we can't re-insmod it later. */
 571                 free_irq(dev_ne2000.irq);
 572                 release_region(dev_ne2000.base_addr, NE_IO_EXTENT);
 573         }
 574 }
 575 #endif /* MODULE */
 576 
 577 /*
 578  * Local variables:
 579  *  compile-command: "gcc -DKERNEL -Wall -O6 -fomit-frame-pointer -I/usr/src/linux/net/tcp -c ne.c"
 580  *  version-control: t
 581  *  kept-new-versions: 5
 582  * End:
 583  */
/* */
root/drivers/net/ne.c

DEFINITIONS
