drivers/net/ethernet/8390/wd.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
do_wd_probe
wd_probe
wd_probe1
wd_open
wd_reset_8390
wd_get_8390_hdr
wd_block_input
wd_block_output
wd_close
init_module
cleanup_card
cleanup_module
   1 /* wd.c: A WD80x3 ethernet driver for linux. */
   2 /*
   3         Written 1993-94 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 General Public License, incorporated herein by reference.
  10 
  11         The author may be reached as becker@scyld.com, or C/O
  12         Scyld Computing Corporation
  13         410 Severn Ave., Suite 210
  14         Annapolis MD 21403
  15 
  16         This is a driver for WD8003 and WD8013 "compatible" ethercards.
  17 
  18         Thanks to Russ Nelson (nelson@crnwyr.com) for loaning me a WD8013.
  19 
  20         Changelog:
  21 
  22         Paul Gortmaker  : multiple card support for module users, support
  23                           for non-standard memory sizes.
  24 
  25 
  26 */
  27 
  28 static const char version[] =
  29         "wd.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
  30 
  31 #include <linux/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/errno.h>
  34 #include <linux/string.h>
  35 #include <linux/init.h>
  36 #include <linux/interrupt.h>
  37 #include <linux/delay.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/etherdevice.h>
  40 
  41 #include <asm/io.h>
  42 
  43 #include "8390.h"
  44 
  45 #define DRV_NAME "wd"
  46 
  47 /* A zero-terminated list of I/O addresses to be probed. */
  48 static unsigned int wd_portlist[] __initdata =
  49 {0x300, 0x280, 0x380, 0x240, 0};
  50 
  51 static int wd_probe1(struct net_device *dev, int ioaddr);
  52 
  53 static int wd_open(struct net_device *dev);
  54 static void wd_reset_8390(struct net_device *dev);
  55 static void wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
  56                                                 int ring_page);
  57 static void wd_block_input(struct net_device *dev, int count,
  58                                                   struct sk_buff *skb, int ring_offset);
  59 static void wd_block_output(struct net_device *dev, int count,
  60                                                         const unsigned char *buf, int start_page);
  61 static int wd_close(struct net_device *dev);
  62 
  63 static u32 wd_msg_enable;
  64 
  65 #define WD_START_PG             0x00    /* First page of TX buffer */
  66 #define WD03_STOP_PG    0x20    /* Last page +1 of RX ring */
  67 #define WD13_STOP_PG    0x40    /* Last page +1 of RX ring */
  68 
  69 #define WD_CMDREG               0               /* Offset to ASIC command register. */
  70 #define  WD_RESET               0x80    /* Board reset, in WD_CMDREG. */
  71 #define  WD_MEMENB              0x40    /* Enable the shared memory. */
  72 #define WD_CMDREG5              5               /* Offset to 16-bit-only ASIC register 5. */
  73 #define  ISA16                  0x80    /* Enable 16 bit access from the ISA bus. */
  74 #define  NIC16                  0x40    /* Enable 16 bit access from the 8390. */
  75 #define WD_NIC_OFFSET   16              /* Offset to the 8390 from the base_addr. */
  76 #define WD_IO_EXTENT    32
  77 
  78 
  79 /*      Probe for the WD8003 and WD8013.  These cards have the station
  80         address PROM at I/O ports <base>+8 to <base>+13, with a checksum
  81         following. A Soundblaster can have the same checksum as an WDethercard,
  82         so we have an extra exclusionary check for it.
  83 
  84         The wd_probe1() routine initializes the card and fills the
  85         station address field. */
  86 
  87 static int __init do_wd_probe(struct net_device *dev)
  88 {
  89         int i;
  90         struct resource *r;
  91         int base_addr = dev->base_addr;
  92         int irq = dev->irq;
  93         int mem_start = dev->mem_start;
  94         int mem_end = dev->mem_end;
  95 
  96         if (base_addr > 0x1ff) {        /* Check a user specified location. */
  97                 r = request_region(base_addr, WD_IO_EXTENT, "wd-probe");
  98                 if ( r == NULL)
  99                         return -EBUSY;
 100                 i = wd_probe1(dev, base_addr);
 101                 if (i != 0)
 102                         release_region(base_addr, WD_IO_EXTENT);
 103                 else
 104                         r->name = dev->name;
 105                 return i;
 106         }
 107         else if (base_addr != 0)        /* Don't probe at all. */
 108                 return -ENXIO;
 109 
 110         for (i = 0; wd_portlist[i]; i++) {
 111                 int ioaddr = wd_portlist[i];
 112                 r = request_region(ioaddr, WD_IO_EXTENT, "wd-probe");
 113                 if (r == NULL)
 114                         continue;
 115                 if (wd_probe1(dev, ioaddr) == 0) {
 116                         r->name = dev->name;
 117                         return 0;
 118                 }
 119                 release_region(ioaddr, WD_IO_EXTENT);
 120                 dev->irq = irq;
 121                 dev->mem_start = mem_start;
 122                 dev->mem_end = mem_end;
 123         }
 124 
 125         return -ENODEV;
 126 }
 127 
 128 #ifndef MODULE
 129 struct net_device * __init wd_probe(int unit)
 130 {
 131         struct net_device *dev = alloc_ei_netdev();
 132         int err;
 133 
 134         if (!dev)
 135                 return ERR_PTR(-ENOMEM);
 136 
 137         sprintf(dev->name, "eth%d", unit);
 138         netdev_boot_setup_check(dev);
 139 
 140         err = do_wd_probe(dev);
 141         if (err)
 142                 goto out;
 143         return dev;
 144 out:
 145         free_netdev(dev);
 146         return ERR_PTR(err);
 147 }
 148 #endif
 149 
 150 static const struct net_device_ops wd_netdev_ops = {
 151         .ndo_open               = wd_open,
 152         .ndo_stop               = wd_close,
 153         .ndo_start_xmit         = ei_start_xmit,
 154         .ndo_tx_timeout         = ei_tx_timeout,
 155         .ndo_get_stats          = ei_get_stats,
 156         .ndo_set_rx_mode        = ei_set_multicast_list,
 157         .ndo_validate_addr      = eth_validate_addr,
 158         .ndo_set_mac_address    = eth_mac_addr,
 159 #ifdef CONFIG_NET_POLL_CONTROLLER
 160         .ndo_poll_controller    = ei_poll,
 161 #endif
 162 };
 163 
 164 static int __init wd_probe1(struct net_device *dev, int ioaddr)
 165 {
 166         int i;
 167         int err;
 168         int checksum = 0;
 169         int ancient = 0;                        /* An old card without config registers. */
 170         int word16 = 0;                         /* 0 = 8 bit, 1 = 16 bit */
 171         const char *model_name;
 172         static unsigned version_printed;
 173         struct ei_device *ei_local = netdev_priv(dev);
 174 
 175         for (i = 0; i < 8; i++)
 176                 checksum += inb(ioaddr + 8 + i);
 177         if (inb(ioaddr + 8) == 0xff     /* Extra check to avoid soundcard. */
 178                 || inb(ioaddr + 9) == 0xff
 179                 || (checksum & 0xff) != 0xFF)
 180                 return -ENODEV;
 181 
 182         /* Check for semi-valid mem_start/end values if supplied. */
 183         if ((dev->mem_start % 0x2000) || (dev->mem_end % 0x2000)) {
 184                 netdev_warn(dev,
 185                             "wd.c: user supplied mem_start or mem_end not on 8kB boundary - ignored.\n");
 186                 dev->mem_start = 0;
 187                 dev->mem_end = 0;
 188         }
 189 
 190         if ((wd_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
 191                 netdev_info(dev, version);
 192 
 193         for (i = 0; i < 6; i++)
 194                 dev->dev_addr[i] = inb(ioaddr + 8 + i);
 195 
 196         netdev_info(dev, "WD80x3 at %#3x, %pM", ioaddr, dev->dev_addr);
 197 
 198         /* The following PureData probe code was contributed by
 199            Mike Jagdis <jaggy@purplet.demon.co.uk>. Puredata does software
 200            configuration differently from others so we have to check for them.
 201            This detects an 8 bit, 16 bit or dumb (Toshiba, jumpered) card.
 202            */
 203         if (inb(ioaddr+0) == 'P' && inb(ioaddr+1) == 'D') {
 204                 unsigned char reg5 = inb(ioaddr+5);
 205 
 206                 switch (inb(ioaddr+2)) {
 207                 case 0x03: word16 = 0; model_name = "PDI8023-8";        break;
 208                 case 0x05: word16 = 0; model_name = "PDUC8023"; break;
 209                 case 0x0a: word16 = 1; model_name = "PDI8023-16"; break;
 210                         /* Either 0x01 (dumb) or they've released a new version. */
 211                 default:         word16 = 0; model_name = "PDI8023";    break;
 212                 }
 213                 dev->mem_start = ((reg5 & 0x1c) + 0xc0) << 12;
 214                 dev->irq = (reg5 & 0xe0) == 0xe0 ? 10 : (reg5 >> 5) + 1;
 215         } else {                                                                /* End of PureData probe */
 216                 /* This method of checking for a 16-bit board is borrowed from the
 217                    we.c driver.  A simpler method is just to look in ASIC reg. 0x03.
 218                    I'm comparing the two method in alpha test to make certain they
 219                    return the same result. */
 220                 /* Check for the old 8 bit board - it has register 0/8 aliasing.
 221                    Do NOT check i>=6 here -- it hangs the old 8003 boards! */
 222                 for (i = 0; i < 6; i++)
 223                         if (inb(ioaddr+i) != inb(ioaddr+8+i))
 224                                 break;
 225                 if (i >= 6) {
 226                         ancient = 1;
 227                         model_name = "WD8003-old";
 228                         word16 = 0;
 229                 } else {
 230                         int tmp = inb(ioaddr+1); /* fiddle with 16bit bit */
 231                         outb( tmp ^ 0x01, ioaddr+1 ); /* attempt to clear 16bit bit */
 232                         if (((inb( ioaddr+1) & 0x01) == 0x01) /* A 16 bit card */
 233                                 && (tmp & 0x01) == 0x01 ) {                             /* In a 16 slot. */
 234                                 int asic_reg5 = inb(ioaddr+WD_CMDREG5);
 235                                 /* Magic to set ASIC to word-wide mode. */
 236                                 outb( NIC16 | (asic_reg5&0x1f), ioaddr+WD_CMDREG5);
 237                                 outb(tmp, ioaddr+1);
 238                                 model_name = "WD8013";
 239                                 word16 = 1;             /* We have a 16bit board here! */
 240                         } else {
 241                                 model_name = "WD8003";
 242                                 word16 = 0;
 243                         }
 244                         outb(tmp, ioaddr+1);                    /* Restore original reg1 value. */
 245                 }
 246 #ifndef final_version
 247                 if ( !ancient && (inb(ioaddr+1) & 0x01) != (word16 & 0x01))
 248                         pr_cont("\nWD80?3: Bus width conflict, %d (probe) != %d (reg report).",
 249                                 word16 ? 16 : 8,
 250                                 (inb(ioaddr+1) & 0x01) ? 16 : 8);
 251 #endif
 252         }
 253 
 254 #if defined(WD_SHMEM) && WD_SHMEM > 0x80000
 255         /* Allow a compile-time override.        */
 256         dev->mem_start = WD_SHMEM;
 257 #else
 258         if (dev->mem_start == 0) {
 259                 /* Sanity and old 8003 check */
 260                 int reg0 = inb(ioaddr);
 261                 if (reg0 == 0xff || reg0 == 0) {
 262                         /* Future plan: this could check a few likely locations first. */
 263                         dev->mem_start = 0xd0000;
 264                         pr_cont(" assigning address %#lx", dev->mem_start);
 265                 } else {
 266                         int high_addr_bits = inb(ioaddr+WD_CMDREG5) & 0x1f;
 267                         /* Some boards don't have the register 5 -- it returns 0xff. */
 268                         if (high_addr_bits == 0x1f || word16 == 0)
 269                                 high_addr_bits = 0x01;
 270                         dev->mem_start = ((reg0&0x3f) << 13) + (high_addr_bits << 19);
 271                 }
 272         }
 273 #endif
 274 
 275         /* The 8390 isn't at the base address -- the ASIC regs are there! */
 276         dev->base_addr = ioaddr+WD_NIC_OFFSET;
 277 
 278         if (dev->irq < 2) {
 279                 static const int irqmap[] = {9, 3, 5, 7, 10, 11, 15, 4};
 280                 int reg1 = inb(ioaddr+1);
 281                 int reg4 = inb(ioaddr+4);
 282                 if (ancient || reg1 == 0xff) {  /* Ack!! No way to read the IRQ! */
 283                         short nic_addr = ioaddr+WD_NIC_OFFSET;
 284                         unsigned long irq_mask;
 285 
 286                         /* We have an old-style ethercard that doesn't report its IRQ
 287                            line.  Do autoirq to find the IRQ line. Note that this IS NOT
 288                            a reliable way to trigger an interrupt. */
 289                         outb_p(E8390_NODMA + E8390_STOP, nic_addr);
 290                         outb(0x00, nic_addr+EN0_IMR);   /* Disable all intrs. */
 291 
 292                         irq_mask = probe_irq_on();
 293                         outb_p(0xff, nic_addr + EN0_IMR);       /* Enable all interrupts. */
 294                         outb_p(0x00, nic_addr + EN0_RCNTLO);
 295                         outb_p(0x00, nic_addr + EN0_RCNTHI);
 296                         outb(E8390_RREAD+E8390_START, nic_addr); /* Trigger it... */
 297                         mdelay(20);
 298                         dev->irq = probe_irq_off(irq_mask);
 299 
 300                         outb_p(0x00, nic_addr+EN0_IMR); /* Mask all intrs. again. */
 301 
 302                         if (wd_msg_enable & NETIF_MSG_PROBE)
 303                                 pr_cont(" autoirq is %d", dev->irq);
 304                         if (dev->irq < 2)
 305                                 dev->irq = word16 ? 10 : 5;
 306                 } else
 307                         dev->irq = irqmap[((reg4 >> 5) & 0x03) + (reg1 & 0x04)];
 308         } else if (dev->irq == 2)               /* Fixup bogosity: IRQ2 is really IRQ9 */
 309                 dev->irq = 9;
 310 
 311         /* Snarf the interrupt now.  There's no point in waiting since we cannot
 312            share and the board will usually be enabled. */
 313         i = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
 314         if (i) {
 315                 pr_cont(" unable to get IRQ %d.\n", dev->irq);
 316                 return i;
 317         }
 318 
 319         /* OK, were are certain this is going to work.  Setup the device. */
 320         ei_status.name = model_name;
 321         ei_status.word16 = word16;
 322         ei_status.tx_start_page = WD_START_PG;
 323         ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 324 
 325         /* Don't map in the shared memory until the board is actually opened. */
 326 
 327         /* Some cards (eg WD8003EBT) can be jumpered for more (32k!) memory. */
 328         if (dev->mem_end != 0) {
 329                 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 330                 ei_status.priv = dev->mem_end - dev->mem_start;
 331         } else {
 332                 ei_status.stop_page = word16 ? WD13_STOP_PG : WD03_STOP_PG;
 333                 dev->mem_end = dev->mem_start + (ei_status.stop_page - WD_START_PG)*256;
 334                 ei_status.priv = (ei_status.stop_page - WD_START_PG)*256;
 335         }
 336 
 337         ei_status.mem = ioremap(dev->mem_start, ei_status.priv);
 338         if (!ei_status.mem) {
 339                 free_irq(dev->irq, dev);
 340                 return -ENOMEM;
 341         }
 342 
 343         pr_cont(" %s, IRQ %d, shared memory at %#lx-%#lx.\n",
 344                 model_name, dev->irq, dev->mem_start, dev->mem_end-1);
 345 
 346         ei_status.reset_8390 = wd_reset_8390;
 347         ei_status.block_input = wd_block_input;
 348         ei_status.block_output = wd_block_output;
 349         ei_status.get_8390_hdr = wd_get_8390_hdr;
 350 
 351         dev->netdev_ops = &wd_netdev_ops;
 352         NS8390_init(dev, 0);
 353         ei_local->msg_enable = wd_msg_enable;
 354 
 355 #if 1
 356         /* Enable interrupt generation on softconfig cards -- M.U */
 357         /* .. but possibly potentially unsafe - Donald */
 358         if (inb(ioaddr+14) & 0x20)
 359                 outb(inb(ioaddr+4)|0x80, ioaddr+4);
 360 #endif
 361 
 362         err = register_netdev(dev);
 363         if (err) {
 364                 free_irq(dev->irq, dev);
 365                 iounmap(ei_status.mem);
 366         }
 367         return err;
 368 }
 369 
 370 static int
 371 wd_open(struct net_device *dev)
 372 {
 373   int ioaddr = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
 374 
 375   /* Map in the shared memory. Always set register 0 last to remain
 376          compatible with very old boards. */
 377   ei_status.reg0 = ((dev->mem_start>>13) & 0x3f) | WD_MEMENB;
 378   ei_status.reg5 = ((dev->mem_start>>19) & 0x1f) | NIC16;
 379 
 380   if (ei_status.word16)
 381           outb(ei_status.reg5, ioaddr+WD_CMDREG5);
 382   outb(ei_status.reg0, ioaddr); /* WD_CMDREG */
 383 
 384   return ei_open(dev);
 385 }
 386 
 387 static void
 388 wd_reset_8390(struct net_device *dev)
 389 {
 390         int wd_cmd_port = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
 391         struct ei_device *ei_local = netdev_priv(dev);
 392 
 393         outb(WD_RESET, wd_cmd_port);
 394         netif_dbg(ei_local, hw, dev, "resetting the WD80x3 t=%lu...\n",
 395                   jiffies);
 396         ei_status.txing = 0;
 397 
 398         /* Set up the ASIC registers, just in case something changed them. */
 399         outb((((dev->mem_start>>13) & 0x3f)|WD_MEMENB), wd_cmd_port);
 400         if (ei_status.word16)
 401                 outb(NIC16 | ((dev->mem_start>>19) & 0x1f), wd_cmd_port+WD_CMDREG5);
 402 
 403         netif_dbg(ei_local, hw, dev, "reset done\n");
 404 }
 405 
 406 /* Grab the 8390 specific header. Similar to the block_input routine, but
 407    we don't need to be concerned with ring wrap as the header will be at
 408    the start of a page, so we optimize accordingly. */
 409 
 410 static void
 411 wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 412 {
 413 
 414         int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
 415         void __iomem *hdr_start = ei_status.mem + ((ring_page - WD_START_PG)<<8);
 416 
 417         /* We'll always get a 4 byte header read followed by a packet read, so
 418            we enable 16 bit mode before the header, and disable after the body. */
 419         if (ei_status.word16)
 420                 outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
 421 
 422 #ifdef __BIG_ENDIAN
 423         /* Officially this is what we are doing, but the readl() is faster */
 424         /* unfortunately it isn't endian aware of the struct               */
 425         memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
 426         hdr->count = le16_to_cpu(hdr->count);
 427 #else
 428         ((unsigned int*)hdr)[0] = readl(hdr_start);
 429 #endif
 430 }
 431 
 432 /* Block input and output are easy on shared memory ethercards, and trivial
 433    on the Western digital card where there is no choice of how to do it.
 434    The only complications are that the ring buffer wraps, and need to map
 435    switch between 8- and 16-bit modes. */
 436 
 437 static void
 438 wd_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 439 {
 440         int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
 441         unsigned long offset = ring_offset - (WD_START_PG<<8);
 442         void __iomem *xfer_start = ei_status.mem + offset;
 443 
 444         if (offset + count > ei_status.priv) {
 445                 /* We must wrap the input move. */
 446                 int semi_count = ei_status.priv - offset;
 447                 memcpy_fromio(skb->data, xfer_start, semi_count);
 448                 count -= semi_count;
 449                 memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
 450         } else {
 451                 /* Packet is in one chunk -- we can copy + cksum. */
 452                 memcpy_fromio(skb->data, xfer_start, count);
 453         }
 454 
 455         /* Turn off 16 bit access so that reboot works.  ISA brain-damage */
 456         if (ei_status.word16)
 457                 outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
 458 }
 459 
 460 static void
 461 wd_block_output(struct net_device *dev, int count, const unsigned char *buf,
 462                                 int start_page)
 463 {
 464         int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
 465         void __iomem *shmem = ei_status.mem + ((start_page - WD_START_PG)<<8);
 466 
 467 
 468         if (ei_status.word16) {
 469                 /* Turn on and off 16 bit access so that reboot works. */
 470                 outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
 471                 memcpy_toio(shmem, buf, count);
 472                 outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
 473         } else
 474                 memcpy_toio(shmem, buf, count);
 475 }
 476 
 477 
 478 static int
 479 wd_close(struct net_device *dev)
 480 {
 481         int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
 482         struct ei_device *ei_local = netdev_priv(dev);
 483 
 484         netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
 485         ei_close(dev);
 486 
 487         /* Change from 16-bit to 8-bit shared memory so reboot works. */
 488         if (ei_status.word16)
 489                 outb(ei_status.reg5, wd_cmdreg + WD_CMDREG5 );
 490 
 491         /* And disable the shared memory. */
 492         outb(ei_status.reg0 & ~WD_MEMENB, wd_cmdreg);
 493 
 494         return 0;
 495 }
 496 
 497 
 498 #ifdef MODULE
 499 #define MAX_WD_CARDS    4       /* Max number of wd cards per module */
 500 static struct net_device *dev_wd[MAX_WD_CARDS];
 501 static int io[MAX_WD_CARDS];
 502 static int irq[MAX_WD_CARDS];
 503 static int mem[MAX_WD_CARDS];
 504 static int mem_end[MAX_WD_CARDS];       /* for non std. mem size */
 505 
 506 module_param_hw_array(io, int, ioport, NULL, 0);
 507 module_param_hw_array(irq, int, irq, NULL, 0);
 508 module_param_hw_array(mem, int, iomem, NULL, 0);
 509 module_param_hw_array(mem_end, int, iomem, NULL, 0);
 510 module_param_named(msg_enable, wd_msg_enable, uint, 0444);
 511 MODULE_PARM_DESC(io, "I/O base address(es)");
 512 MODULE_PARM_DESC(irq, "IRQ number(s) (ignored for PureData boards)");
 513 MODULE_PARM_DESC(mem, "memory base address(es)(ignored for PureData boards)");
 514 MODULE_PARM_DESC(mem_end, "memory end address(es)");
 515 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
 516 MODULE_DESCRIPTION("ISA Western Digital wd8003/wd8013 ; SMC Elite, Elite16 ethernet driver");
 517 MODULE_LICENSE("GPL");
 518 
 519 /* This is set up so that only a single autoprobe takes place per call.
 520 ISA device autoprobes on a running machine are not recommended. */
 521 
 522 int __init init_module(void)
 523 {
 524         struct net_device *dev;
 525         int this_dev, found = 0;
 526 
 527         for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) {
 528                 if (io[this_dev] == 0)  {
 529                         if (this_dev != 0) break; /* only autoprobe 1st one */
 530                         printk(KERN_NOTICE "wd.c: Presently autoprobing (not recommended) for a single card.\n");
 531                 }
 532                 dev = alloc_ei_netdev();
 533                 if (!dev)
 534                         break;
 535                 dev->irq = irq[this_dev];
 536                 dev->base_addr = io[this_dev];
 537                 dev->mem_start = mem[this_dev];
 538                 dev->mem_end = mem_end[this_dev];
 539                 if (do_wd_probe(dev) == 0) {
 540                         dev_wd[found++] = dev;
 541                         continue;
 542                 }
 543                 free_netdev(dev);
 544                 printk(KERN_WARNING "wd.c: No wd80x3 card found (i/o = 0x%x).\n", io[this_dev]);
 545                 break;
 546         }
 547         if (found)
 548                 return 0;
 549         return -ENXIO;
 550 }
 551 
 552 static void cleanup_card(struct net_device *dev)
 553 {
 554         free_irq(dev->irq, dev);
 555         release_region(dev->base_addr - WD_NIC_OFFSET, WD_IO_EXTENT);
 556         iounmap(ei_status.mem);
 557 }
 558 
 559 void __exit
 560 cleanup_module(void)
 561 {
 562         int this_dev;
 563 
 564         for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) {
 565                 struct net_device *dev = dev_wd[this_dev];
 566                 if (dev) {
 567                         unregister_netdev(dev);
 568                         cleanup_card(dev);
 569                         free_netdev(dev);
 570                 }
 571         }
 572 }
 573 #endif /* MODULE */
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/ethernet/8390/wd.c

DEFINITIONS
