drivers/net/macsonic.c

   1 /*
   2  * macsonic.c
   3  *
   4  * (C) 2005 Finn Thain
   5  *
   6  * Converted to DMA API, converted to unified driver model, made it work as
   7  * a module again, and from the mac68k project, introduced more 32-bit cards
   8  * and dhd's support for 16-bit cards.
   9  *
  10  * (C) 1998 Alan Cox
  11  *
  12  * Debugging Andreas Ehliar, Michael Schmitz
  13  *
  14  * Based on code
  15  * (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.franken.de)
  16  *
  17  * This driver is based on work from Andreas Busse, but most of
  18  * the code is rewritten.
  19  *
  20  * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
  21  *
  22  * A driver for the Mac onboard Sonic ethernet chip.
  23  *
  24  * 98/12/21 MSch: judged from tests on Q800, it's basically working,
  25  *                but eating up both receive and transmit resources
  26  *                and duplicating packets. Needs more testing.
  27  *
  28  * 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed.
  29  *
  30  * 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems
  31  *          on centris.
  32  */
  33
  34 #include <linux/kernel.h>
  35 #include <linux/module.h>
  36 #include <linux/types.h>
  37 #include <linux/fcntl.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/init.h>
  40 #include <linux/ioport.h>
  41 #include <linux/in.h>
  42 #include <linux/slab.h>
  43 #include <linux/string.h>
  44 #include <linux/delay.h>
  45 #include <linux/nubus.h>
  46 #include <linux/errno.h>
  47 #include <linux/netdevice.h>
  48 #include <linux/etherdevice.h>
  49 #include <linux/skbuff.h>
  50 #include <linux/platform_device.h>
  51 #include <linux/dma-mapping.h>
  52 #include <linux/bitrev.h>
  53
  54 #include <asm/bootinfo.h>
  55 #include <asm/system.h>
  56 #include <asm/pgtable.h>
  57 #include <asm/io.h>
  58 #include <asm/hwtest.h>
  59 #include <asm/dma.h>
  60 #include <asm/macintosh.h>
  61 #include <asm/macints.h>
  62 #include <asm/mac_via.h>
  63
  64 static char mac_sonic_string[] = "macsonic";
  65 static struct platform_device *mac_sonic_device;
  66
  67 #include "sonic.h"
  68
  69 /* These should basically be bus-size and endian independent (since
  70    the SONIC is at least smart enough that it uses the same endianness
  71    as the host, unlike certain less enlightened Macintosh NICs) */
  72 #define SONIC_READ(reg) (nubus_readw(dev->base_addr + (reg * 4) \
  73               + lp->reg_offset))
  74 #define SONIC_WRITE(reg,val) (nubus_writew(val, dev->base_addr + (reg * 4) \
  75               + lp->reg_offset))
  76
  77 /* use 0 for production, 1 for verification, >1 for debug */
  78 #ifdef SONIC_DEBUG
  79 static unsigned int sonic_debug = SONIC_DEBUG;
  80 #else
  81 static unsigned int sonic_debug = 1;
  82 #endif
  83
  84 static int sonic_version_printed;
  85
  86 extern int mac_onboard_sonic_probe(struct net_device* dev);
  87 extern int mac_nubus_sonic_probe(struct net_device* dev);
  88
  89 /* For onboard SONIC */
  90 #define ONBOARD_SONIC_REGISTERS 0x50F0A000
  91 #define ONBOARD_SONIC_PROM_BASE 0x50f08000
  92
  93 enum macsonic_type {
  94         MACSONIC_DUODOCK,
  95         MACSONIC_APPLE,
  96         MACSONIC_APPLE16,
  97         MACSONIC_DAYNA,
  98         MACSONIC_DAYNALINK
  99 };
 100
 101 /* For the built-in SONIC in the Duo Dock */
 102 #define DUODOCK_SONIC_REGISTERS 0xe10000
 103 #define DUODOCK_SONIC_PROM_BASE 0xe12000
 104
 105 /* For Apple-style NuBus SONIC */
 106 #define APPLE_SONIC_REGISTERS   0
 107 #define APPLE_SONIC_PROM_BASE   0x40000
 108
 109 /* Daynalink LC SONIC */
 110 #define DAYNALINK_PROM_BASE 0x400000
 111
 112 /* For Dayna-style NuBus SONIC (haven't seen one yet) */
 113 #define DAYNA_SONIC_REGISTERS   0x180000
 114 /* This is what OpenBSD says.  However, this is definitely in NuBus
 115    ROM space so we should be able to get it by walking the NuBus
 116    resource directories */
 117 #define DAYNA_SONIC_MAC_ADDR    0xffe004
 118
 119 #define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)
 120
 121 /*
 122  * For reversing the PROM address
 123  */
 124
 125 static inline void bit_reverse_addr(unsigned char addr[6])
 126 {
 127         int i;
 128
 129         for(i = 0; i < 6; i++)
 130                 addr[i] = bitrev8(addr[i]);
 131 }
 132
 133 int __init macsonic_init(struct net_device* dev)
 134 {
 135         struct sonic_local* lp = netdev_priv(dev);
 136
 137         /* Allocate the entire chunk of memory for the descriptors.
 138            Note that this cannot cross a 64K boundary. */
 139         if ((lp->descriptors = dma_alloc_coherent(lp->device,
 140                     SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 141                     &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
 142                 printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n", lp->device->bus_id);
 143                 return -ENOMEM;
 144         }
 145
 146         /* Now set up the pointers to point to the appropriate places */
 147         lp->cda = lp->descriptors;
 148         lp->tda = lp->cda + (SIZEOF_SONIC_CDA
 149                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 150         lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
 151                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 152         lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
 153                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 154
 155         lp->cda_laddr = lp->descriptors_laddr;
 156         lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
 157                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 158         lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
 159                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 160         lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
 161                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 162
 163         dev->open = sonic_open;
 164         dev->stop = sonic_close;
 165         dev->hard_start_xmit = sonic_send_packet;
 166         dev->get_stats = sonic_get_stats;
 167         dev->set_multicast_list = &sonic_multicast_list;
 168         dev->tx_timeout = sonic_tx_timeout;
 169         dev->watchdog_timeo = TX_TIMEOUT;
 170
 171         /*
 172          * clear tally counter
 173          */
 174         SONIC_WRITE(SONIC_CRCT, 0xffff);
 175         SONIC_WRITE(SONIC_FAET, 0xffff);
 176         SONIC_WRITE(SONIC_MPT, 0xffff);
 177
 178         return 0;
 179 }
 180
 181 int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
 182 {
 183         struct sonic_local *lp = netdev_priv(dev);
 184         const int prom_addr = ONBOARD_SONIC_PROM_BASE;
 185         int i;
 186
 187         /* On NuBus boards we can sometimes look in the ROM resources.
 188            No such luck for comm-slot/onboard. */
 189         for(i = 0; i < 6; i++)
 190                 dev->dev_addr[i] = SONIC_READ_PROM(i);
 191
 192         /* Most of the time, the address is bit-reversed.  The NetBSD
 193            source has a rather long and detailed historical account of
 194            why this is so. */
 195         if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
 196             memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
 197             memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
 198             memcmp(dev->dev_addr, "\x00\x05\x02", 3))
 199                 bit_reverse_addr(dev->dev_addr);
 200         else
 201                 return 0;
 202
 203         /* If we still have what seems to be a bogus address, we'll
 204            look in the CAM.  The top entry should be ours. */
 205         /* Danger! This only works if MacOS has already initialized
 206            the card... */
 207         if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
 208             memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
 209             memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
 210             memcmp(dev->dev_addr, "\x00\x05\x02", 3))
 211         {
 212                 unsigned short val;
 213
 214                 printk(KERN_INFO "macsonic: PROM seems to be wrong, trying CAM entry 15\n");
 215
 216                 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 217                 SONIC_WRITE(SONIC_CEP, 15);
 218
 219                 val = SONIC_READ(SONIC_CAP2);
 220                 dev->dev_addr[5] = val >> 8;
 221                 dev->dev_addr[4] = val & 0xff;
 222                 val = SONIC_READ(SONIC_CAP1);
 223                 dev->dev_addr[3] = val >> 8;
 224                 dev->dev_addr[2] = val & 0xff;
 225                 val = SONIC_READ(SONIC_CAP0);
 226                 dev->dev_addr[1] = val >> 8;
 227                 dev->dev_addr[0] = val & 0xff;
 228
 229                 printk(KERN_INFO "HW Address from CAM 15: ");
 230                 for (i = 0; i < 6; i++) {
 231                         printk("%2.2x", dev->dev_addr[i]);
 232                         if (i < 5)
 233                                 printk(":");
 234                 }
 235                 printk("\n");
 236         } else return 0;
 237
 238         if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
 239             memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
 240             memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
 241             memcmp(dev->dev_addr, "\x00\x05\x02", 3))
 242         {
 243                 /*
 244                  * Still nonsense ... messed up someplace!
 245                  */
 246                 printk(KERN_ERR "macsonic: ERROR (INVALID MAC)\n");
 247                 return -EIO;
 248         } else return 0;
 249 }
 250
 251 int __init mac_onboard_sonic_probe(struct net_device* dev)
 252 {
 253         /* Bwahahaha */
 254         static int once_is_more_than_enough;
 255         struct sonic_local* lp = netdev_priv(dev);
 256         int sr;
 257         int commslot = 0;
 258
 259         if (once_is_more_than_enough)
 260                 return -ENODEV;
 261         once_is_more_than_enough = 1;
 262
 263         if (!MACH_IS_MAC)
 264                 return -ENODEV;
 265
 266         if (macintosh_config->ether_type != MAC_ETHER_SONIC)
 267                 return -ENODEV;
 268
 269         printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
 270
 271         /* Bogus probing, on the models which may or may not have
 272            Ethernet (BTW, the Ethernet *is* always at the same
 273            address, and nothing else lives there, at least if Apple's
 274            documentation is to be believed) */
 275         if (macintosh_config->ident == MAC_MODEL_Q630 ||
 276             macintosh_config->ident == MAC_MODEL_P588 ||
 277             macintosh_config->ident == MAC_MODEL_P575 ||
 278             macintosh_config->ident == MAC_MODEL_C610) {
 279                 unsigned long flags;
 280                 int card_present;
 281
 282                 local_irq_save(flags);
 283                 card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
 284                 local_irq_restore(flags);
 285
 286                 if (!card_present) {
 287                         printk("none.\n");
 288                         return -ENODEV;
 289                 }
 290                 commslot = 1;
 291         }
 292
 293         printk("yes\n");
 294
 295         /* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
 296          * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
 297         dev->base_addr = ONBOARD_SONIC_REGISTERS;
 298         if (via_alt_mapping)
 299                 dev->irq = IRQ_AUTO_3;
 300         else
 301                 dev->irq = IRQ_NUBUS_9;
 302
 303         if (!sonic_version_printed) {
 304                 printk(KERN_INFO "%s", version);
 305                 sonic_version_printed = 1;
 306         }
 307         printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
 308                lp->device->bus_id, dev->base_addr);
 309
 310         /* The PowerBook's SONIC is 16 bit always. */
 311         if (macintosh_config->ident == MAC_MODEL_PB520) {
 312                 lp->reg_offset = 0;
 313                 lp->dma_bitmode = SONIC_BITMODE16;
 314                 sr = SONIC_READ(SONIC_SR);
 315         } else if (commslot) {
 316                 /* Some of the comm-slot cards are 16 bit.  But some
 317                    of them are not.  The 32-bit cards use offset 2 and
 318                    have known revisions, we try reading the revision
 319                    register at offset 2, if we don't get a known revision
 320                    we assume 16 bit at offset 0.  */
 321                 lp->reg_offset = 2;
 322                 lp->dma_bitmode = SONIC_BITMODE16;
 323
 324                 sr = SONIC_READ(SONIC_SR);
 325                 if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
 326                         /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
 327                         lp->dma_bitmode = SONIC_BITMODE32;
 328                 else {
 329                         lp->dma_bitmode = SONIC_BITMODE16;
 330                         lp->reg_offset = 0;
 331                         sr = SONIC_READ(SONIC_SR);
 332                 }
 333         } else {
 334                 /* All onboard cards are at offset 2 with 32 bit DMA. */
 335                 lp->reg_offset = 2;
 336                 lp->dma_bitmode = SONIC_BITMODE32;
 337                 sr = SONIC_READ(SONIC_SR);
 338         }
 339         printk(KERN_INFO
 340                "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
 341                lp->device->bus_id, sr, lp->dma_bitmode?32:16, lp->reg_offset);
 342
 343 #if 0 /* This is sometimes useful to find out how MacOS configured the card. */
 344         printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", lp->device->bus_id,
 345                SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
 346 #endif
 347
 348         /* Software reset, then initialize control registers. */
 349         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 350
 351         SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
 352                                SONIC_DCR_RFT1  | SONIC_DCR_TFT0 |
 353                                (lp->dma_bitmode ? SONIC_DCR_DW : 0));
 354
 355         /* This *must* be written back to in order to restore the
 356          * extended programmable output bits, as it may not have been
 357          * initialised since the hardware reset. */
 358         SONIC_WRITE(SONIC_DCR2, 0);
 359
 360         /* Clear *and* disable interrupts to be on the safe side */
 361         SONIC_WRITE(SONIC_IMR, 0);
 362         SONIC_WRITE(SONIC_ISR, 0x7fff);
 363
 364         /* Now look for the MAC address. */
 365         if (mac_onboard_sonic_ethernet_addr(dev) != 0)
 366                 return -ENODEV;
 367
 368         /* Shared init code */
 369         return macsonic_init(dev);
 370 }
 371
 372 int __init mac_nubus_sonic_ethernet_addr(struct net_device* dev,
 373                                          unsigned long prom_addr,
 374                                          int id)
 375 {
 376         int i;
 377         for(i = 0; i < 6; i++)
 378                 dev->dev_addr[i] = SONIC_READ_PROM(i);
 379
 380         /* Some of the addresses are bit-reversed */
 381         if (id != MACSONIC_DAYNA)
 382                 bit_reverse_addr(dev->dev_addr);
 383
 384         return 0;
 385 }
 386
 387 int __init macsonic_ident(struct nubus_dev* ndev)
 388 {
 389         if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
 390             ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
 391                 return MACSONIC_DAYNALINK;
 392         if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
 393             ndev->dr_sw == NUBUS_DRSW_APPLE) {
 394                 /* There has to be a better way to do this... */
 395                 if (strstr(ndev->board->name, "DuoDock"))
 396                         return MACSONIC_DUODOCK;
 397                 else
 398                         return MACSONIC_APPLE;
 399         }
 400
 401         if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
 402             ndev->dr_sw == NUBUS_DRSW_DAYNA)
 403                 return MACSONIC_DAYNA;
 404
 405         if (ndev->dr_hw == NUBUS_DRHW_SONIC_LC &&
 406             ndev->dr_sw == 0) { /* huh? */
 407                 return MACSONIC_APPLE16;
 408         }
 409         return -1;
 410 }
 411
 412 int __init mac_nubus_sonic_probe(struct net_device* dev)
 413 {
 414         static int slots;
 415         struct nubus_dev* ndev = NULL;
 416         struct sonic_local* lp = netdev_priv(dev);
 417         unsigned long base_addr, prom_addr;
 418         u16 sonic_dcr;
 419         int id = -1;
 420         int reg_offset, dma_bitmode;
 421
 422         /* Find the first SONIC that hasn't been initialized already */
 423         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
 424                                        NUBUS_TYPE_ETHERNET, ndev)) != NULL)
 425         {
 426                 /* Have we seen it already? */
 427                 if (slots & (1<<ndev->board->slot))
 428                         continue;
 429                 slots |= 1<<ndev->board->slot;
 430
 431                 /* Is it one of ours? */
 432                 if ((id = macsonic_ident(ndev)) != -1)
 433                         break;
 434         }
 435
 436         if (ndev == NULL)
 437                 return -ENODEV;
 438
 439         switch (id) {
 440         case MACSONIC_DUODOCK:
 441                 base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
 442                 prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
 443                 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
 444                             SONIC_DCR_TFT0;
 445                 reg_offset = 2;
 446                 dma_bitmode = SONIC_BITMODE32;
 447                 break;
 448         case MACSONIC_APPLE:
 449                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 450                 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
 451                 sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
 452                 reg_offset = 0;
 453                 dma_bitmode = SONIC_BITMODE32;
 454                 break;
 455         case MACSONIC_APPLE16:
 456                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 457                 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
 458                 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
 459                             SONIC_DCR_PO1 | SONIC_DCR_BMS;
 460                 reg_offset = 0;
 461                 dma_bitmode = SONIC_BITMODE16;
 462                 break;
 463         case MACSONIC_DAYNALINK:
 464                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 465                 prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
 466                 sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
 467                             SONIC_DCR_PO1 | SONIC_DCR_BMS;
 468                 reg_offset = 0;
 469                 dma_bitmode = SONIC_BITMODE16;
 470                 break;
 471         case MACSONIC_DAYNA:
 472                 base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
 473                 prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
 474                 sonic_dcr = SONIC_DCR_BMS |
 475                             SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
 476                 reg_offset = 0;
 477                 dma_bitmode = SONIC_BITMODE16;
 478                 break;
 479         default:
 480                 printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
 481                 return -ENODEV;
 482         }
 483
 484         /* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
 485          * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
 486         dev->base_addr = base_addr;
 487         lp->reg_offset = reg_offset;
 488         lp->dma_bitmode = dma_bitmode;
 489         dev->irq = SLOT2IRQ(ndev->board->slot);
 490
 491         if (!sonic_version_printed) {
 492                 printk(KERN_INFO "%s", version);
 493                 sonic_version_printed = 1;
 494         }
 495         printk(KERN_INFO "%s: %s in slot %X\n",
 496                lp->device->bus_id, ndev->board->name, ndev->board->slot);
 497         printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
 498                lp->device->bus_id, SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);
 499
 500 #if 0 /* This is sometimes useful to find out how MacOS configured the card. */
 501         printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", lp->device->bus_id,
 502                SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
 503 #endif
 504
 505         /* Software reset, then initialize control registers. */
 506         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 507         SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
 508         /* This *must* be written back to in order to restore the
 509          * extended programmable output bits, since it may not have been
 510          * initialised since the hardware reset. */
 511         SONIC_WRITE(SONIC_DCR2, 0);
 512
 513         /* Clear *and* disable interrupts to be on the safe side */
 514         SONIC_WRITE(SONIC_IMR, 0);
 515         SONIC_WRITE(SONIC_ISR, 0x7fff);
 516
 517         /* Now look for the MAC address. */
 518         if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
 519                 return -ENODEV;
 520
 521         /* Shared init code */
 522         return macsonic_init(dev);
 523 }
 524
 525 static int __init mac_sonic_probe(struct platform_device *device)
 526 {
 527         struct net_device *dev;
 528         struct sonic_local *lp;
 529         int err;
 530         int i;
 531
 532         dev = alloc_etherdev(sizeof(struct sonic_local));
 533         if (!dev)
 534                 return -ENOMEM;
 535
 536         lp = netdev_priv(dev);
 537         lp->device = &device->dev;
 538         SET_NETDEV_DEV(dev, &device->dev);
 539         SET_MODULE_OWNER(dev);
 540
 541         /* This will catch fatal stuff like -ENOMEM as well as success */
 542         err = mac_onboard_sonic_probe(dev);
 543         if (err == 0)
 544                 goto found;
 545         if (err != -ENODEV)
 546                 goto out;
 547         err = mac_nubus_sonic_probe(dev);
 548         if (err)
 549                 goto out;
 550 found:
 551         err = register_netdev(dev);
 552         if (err)
 553                 goto out;
 554
 555         printk("%s: MAC ", dev->name);
 556         for (i = 0; i < 6; i++) {
 557                 printk("%2.2x", dev->dev_addr[i]);
 558                 if (i < 5)
 559                         printk(":");
 560         }
 561         printk(" IRQ %d\n", dev->irq);
 562
 563         return 0;
 564
 565 out:
 566         free_netdev(dev);
 567
 568         return err;
 569 }
 570
 571 MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
 572 module_param(sonic_debug, int, 0);
 573 MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
 574
 575 #define SONIC_IRQ_FLAG IRQ_FLG_FAST
 576
 577 #include "sonic.c"
 578
 579 static int __devexit mac_sonic_device_remove (struct platform_device *device)
 580 {
 581         struct net_device *dev = platform_get_drvdata(device);
 582         struct sonic_local* lp = netdev_priv(dev);
 583
 584         unregister_netdev (dev);
 585         dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 586                           lp->descriptors, lp->descriptors_laddr);
 587         free_netdev (dev);
 588
 589         return 0;
 590 }
 591
 592 static struct platform_driver mac_sonic_driver = {
 593         .probe  = mac_sonic_probe,
 594         .remove = __devexit_p(mac_sonic_device_remove),
 595         .driver = {
 596                 .name = mac_sonic_string,
 597         },
 598 };
 599
 600 static int __init mac_sonic_init_module(void)
 601 {
 602         int err;
 603
 604         if ((err = platform_driver_register(&mac_sonic_driver))) {
 605                 printk(KERN_ERR "Driver registration failed\n");
 606                 return err;
 607         }
 608
 609         mac_sonic_device = platform_device_alloc(mac_sonic_string, 0);
 610         if (!mac_sonic_device) {
 611                 goto out_unregister;
 612         }
 613
 614         if (platform_device_add(mac_sonic_device)) {
 615                 platform_device_put(mac_sonic_device);
 616                 mac_sonic_device = NULL;
 617         }
 618
 619         return 0;
 620
 621 out_unregister:
 622         platform_driver_unregister(&mac_sonic_driver);
 623
 624         return -ENOMEM;
 625 }
 626
 627 static void __exit mac_sonic_cleanup_module(void)
 628 {
 629         platform_driver_unregister(&mac_sonic_driver);
 630
 631         if (mac_sonic_device) {
 632                 platform_device_unregister(mac_sonic_device);
 633                 mac_sonic_device = NULL;
 634         }
 635 }
 636
 637 module_init(mac_sonic_init_module);
 638 module_exit(mac_sonic_cleanup_module);