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 static irqreturn_t macsonic_interrupt(int irq, void *dev_id)
 134 {
 135         irqreturn_t result;
 136         unsigned long flags;
 137
 138         local_irq_save(flags);
 139         result = sonic_interrupt(irq, dev_id);
 140         local_irq_restore(flags);
 141         return result;
 142 }
 143
 144 static int macsonic_open(struct net_device* dev)
 145 {
 146         if (request_irq(dev->irq, &sonic_interrupt, IRQ_FLG_FAST, "sonic", dev)) {
 147                 printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 148                 return -EAGAIN;
 149         }
 150         /* Under the A/UX interrupt scheme, the onboard SONIC interrupt comes
 151          * in at priority level 3. However, we sometimes get the level 2 inter-
 152          * rupt as well, which must prevent re-entrance of the sonic handler.
 153          */
 154         if (dev->irq == IRQ_AUTO_3)
 155                 if (request_irq(IRQ_NUBUS_9, &macsonic_interrupt, IRQ_FLG_FAST, "sonic", dev)) {
 156                         printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, IRQ_NUBUS_9);
 157                         free_irq(dev->irq, dev);
 158                         return -EAGAIN;
 159                 }
 160         return sonic_open(dev);
 161 }
 162
 163 static int macsonic_close(struct net_device* dev)
 164 {
 165         int err;
 166         err = sonic_close(dev);
 167         free_irq(dev->irq, dev);
 168         if (dev->irq == IRQ_AUTO_3)
 169                 free_irq(IRQ_NUBUS_9, dev);
 170         return err;
 171 }
 172
 173 int __init macsonic_init(struct net_device* dev)
 174 {
 175         struct sonic_local* lp = netdev_priv(dev);
 176
 177         /* Allocate the entire chunk of memory for the descriptors.
 178            Note that this cannot cross a 64K boundary. */
 179         if ((lp->descriptors = dma_alloc_coherent(lp->device,
 180                     SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 181                     &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
 182                 printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n", lp->device->bus_id);
 183                 return -ENOMEM;
 184         }
 185
 186         /* Now set up the pointers to point to the appropriate places */
 187         lp->cda = lp->descriptors;
 188         lp->tda = lp->cda + (SIZEOF_SONIC_CDA
 189                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 190         lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
 191                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 192         lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
 193                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 194
 195         lp->cda_laddr = lp->descriptors_laddr;
 196         lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
 197                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 198         lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
 199                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 200         lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
 201                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 202
 203         dev->open = macsonic_open;
 204         dev->stop = macsonic_close;
 205         dev->hard_start_xmit = sonic_send_packet;
 206         dev->get_stats = sonic_get_stats;
 207         dev->set_multicast_list = &sonic_multicast_list;
 208         dev->tx_timeout = sonic_tx_timeout;
 209         dev->watchdog_timeo = TX_TIMEOUT;
 210
 211         /*
 212          * clear tally counter
 213          */
 214         SONIC_WRITE(SONIC_CRCT, 0xffff);
 215         SONIC_WRITE(SONIC_FAET, 0xffff);
 216         SONIC_WRITE(SONIC_MPT, 0xffff);
 217
 218         return 0;
 219 }
 220
 221 int __init mac_onboard_sonic_ethernet_addr(struct net_device* dev)
 222 {
 223         struct sonic_local *lp = netdev_priv(dev);
 224         const int prom_addr = ONBOARD_SONIC_PROM_BASE;
 225         int i;
 226
 227         /* On NuBus boards we can sometimes look in the ROM resources.
 228            No such luck for comm-slot/onboard. */
 229         for(i = 0; i < 6; i++)
 230                 dev->dev_addr[i] = SONIC_READ_PROM(i);
 231
 232         /* Most of the time, the address is bit-reversed.  The NetBSD
 233            source has a rather long and detailed historical account of
 234            why this is so. */
 235         if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
 236             memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
 237             memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
 238             memcmp(dev->dev_addr, "\x00\x05\x02", 3))
 239                 bit_reverse_addr(dev->dev_addr);
 240         else
 241                 return 0;
 242
 243         /* If we still have what seems to be a bogus address, we'll
 244            look in the CAM.  The top entry should be ours. */
 245         /* Danger! This only works if MacOS has already initialized
 246            the card... */
 247         if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
 248             memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
 249             memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
 250             memcmp(dev->dev_addr, "\x00\x05\x02", 3))
 251         {
 252                 unsigned short val;
 253
 254                 printk(KERN_INFO "macsonic: PROM seems to be wrong, trying CAM entry 15\n");
 255
 256                 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 257                 SONIC_WRITE(SONIC_CEP, 15);
 258
 259                 val = SONIC_READ(SONIC_CAP2);
 260                 dev->dev_addr[5] = val >> 8;
 261                 dev->dev_addr[4] = val & 0xff;
 262                 val = SONIC_READ(SONIC_CAP1);
 263                 dev->dev_addr[3] = val >> 8;
 264                 dev->dev_addr[2] = val & 0xff;
 265                 val = SONIC_READ(SONIC_CAP0);
 266                 dev->dev_addr[1] = val >> 8;
 267                 dev->dev_addr[0] = val & 0xff;
 268
 269                 printk(KERN_INFO "HW Address from CAM 15: ");
 270                 for (i = 0; i < 6; i++) {
 271                         printk("%2.2x", dev->dev_addr[i]);
 272                         if (i < 5)
 273                                 printk(":");
 274                 }
 275                 printk("\n");
 276         } else return 0;
 277
 278         if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
 279             memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
 280             memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
 281             memcmp(dev->dev_addr, "\x00\x05\x02", 3))
 282         {
 283                 /*
 284                  * Still nonsense ... messed up someplace!
 285                  */
 286                 printk(KERN_ERR "macsonic: ERROR (INVALID MAC)\n");
 287                 return -EIO;
 288         } else return 0;
 289 }
 290
 291 int __init mac_onboard_sonic_probe(struct net_device* dev)
 292 {
 293         /* Bwahahaha */
 294         static int once_is_more_than_enough;
 295         struct sonic_local* lp = netdev_priv(dev);
 296         int sr;
 297         int commslot = 0;
 298
 299         if (once_is_more_than_enough)
 300                 return -ENODEV;
 301         once_is_more_than_enough = 1;
 302
 303         if (!MACH_IS_MAC)
 304                 return -ENODEV;
 305
 306         if (macintosh_config->ether_type != MAC_ETHER_SONIC)
 307                 return -ENODEV;
 308
 309         printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
 310
 311         /* Bogus probing, on the models which may or may not have
 312            Ethernet (BTW, the Ethernet *is* always at the same
 313            address, and nothing else lives there, at least if Apple's
 314            documentation is to be believed) */
 315         if (macintosh_config->ident == MAC_MODEL_Q630 ||
 316             macintosh_config->ident == MAC_MODEL_P588 ||
 317             macintosh_config->ident == MAC_MODEL_P575 ||
 318             macintosh_config->ident == MAC_MODEL_C610) {
 319                 unsigned long flags;
 320                 int card_present;
 321
 322                 local_irq_save(flags);
 323                 card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
 324                 local_irq_restore(flags);
 325
 326                 if (!card_present) {
 327                         printk("none.\n");
 328                         return -ENODEV;
 329                 }
 330                 commslot = 1;
 331         }
 332
 333         printk("yes\n");
 334
 335         /* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
 336          * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
 337         dev->base_addr = ONBOARD_SONIC_REGISTERS;
 338         if (via_alt_mapping)
 339                 dev->irq = IRQ_AUTO_3;
 340         else
 341                 dev->irq = IRQ_NUBUS_9;
 342
 343         if (!sonic_version_printed) {
 344                 printk(KERN_INFO "%s", version);
 345                 sonic_version_printed = 1;
 346         }
 347         printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
 348                lp->device->bus_id, dev->base_addr);
 349
 350         /* The PowerBook's SONIC is 16 bit always. */
 351         if (macintosh_config->ident == MAC_MODEL_PB520) {
 352                 lp->reg_offset = 0;
 353                 lp->dma_bitmode = SONIC_BITMODE16;
 354                 sr = SONIC_READ(SONIC_SR);
 355         } else if (commslot) {
 356                 /* Some of the comm-slot cards are 16 bit.  But some
 357                    of them are not.  The 32-bit cards use offset 2 and
 358                    have known revisions, we try reading the revision
 359                    register at offset 2, if we don't get a known revision
 360                    we assume 16 bit at offset 0.  */
 361                 lp->reg_offset = 2;
 362                 lp->dma_bitmode = SONIC_BITMODE16;
 363
 364                 sr = SONIC_READ(SONIC_SR);
 365                 if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
 366                         /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
 367                         lp->dma_bitmode = SONIC_BITMODE32;
 368                 else {
 369                         lp->dma_bitmode = SONIC_BITMODE16;
 370                         lp->reg_offset = 0;
 371                         sr = SONIC_READ(SONIC_SR);
 372                 }
 373         } else {
 374                 /* All onboard cards are at offset 2 with 32 bit DMA. */
 375                 lp->reg_offset = 2;
 376                 lp->dma_bitmode = SONIC_BITMODE32;
 377                 sr = SONIC_READ(SONIC_SR);
 378         }
 379         printk(KERN_INFO
 380                "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
 381                lp->device->bus_id, sr, lp->dma_bitmode?32:16, lp->reg_offset);
 382
 383 #if 0 /* This is sometimes useful to find out how MacOS configured the card. */
 384         printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", lp->device->bus_id,
 385                SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
 386 #endif
 387
 388         /* Software reset, then initialize control registers. */
 389         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 390
 391         SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
 392                                SONIC_DCR_RFT1  | SONIC_DCR_TFT0 |
 393                                (lp->dma_bitmode ? SONIC_DCR_DW : 0));
 394
 395         /* This *must* be written back to in order to restore the
 396          * extended programmable output bits, as it may not have been
 397          * initialised since the hardware reset. */
 398         SONIC_WRITE(SONIC_DCR2, 0);
 399
 400         /* Clear *and* disable interrupts to be on the safe side */
 401         SONIC_WRITE(SONIC_IMR, 0);
 402         SONIC_WRITE(SONIC_ISR, 0x7fff);
 403
 404         /* Now look for the MAC address. */
 405         if (mac_onboard_sonic_ethernet_addr(dev) != 0)
 406                 return -ENODEV;
 407
 408         /* Shared init code */
 409         return macsonic_init(dev);
 410 }
 411
 412 int __init mac_nubus_sonic_ethernet_addr(struct net_device* dev,
 413                                          unsigned long prom_addr,
 414                                          int id)
 415 {
 416         int i;
 417         for(i = 0; i < 6; i++)
 418                 dev->dev_addr[i] = SONIC_READ_PROM(i);
 419
 420         /* Some of the addresses are bit-reversed */
 421         if (id != MACSONIC_DAYNA)
 422                 bit_reverse_addr(dev->dev_addr);
 423
 424         return 0;
 425 }
 426
 427 int __init macsonic_ident(struct nubus_dev* ndev)
 428 {
 429         if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
 430             ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
 431                 return MACSONIC_DAYNALINK;
 432         if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
 433             ndev->dr_sw == NUBUS_DRSW_APPLE) {
 434                 /* There has to be a better way to do this... */
 435                 if (strstr(ndev->board->name, "DuoDock"))
 436                         return MACSONIC_DUODOCK;
 437                 else
 438                         return MACSONIC_APPLE;
 439         }
 440
 441         if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
 442             ndev->dr_sw == NUBUS_DRSW_DAYNA)
 443                 return MACSONIC_DAYNA;
 444
 445         if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
 446             ndev->dr_sw == 0) { /* huh? */
 447                 return MACSONIC_APPLE16;
 448         }
 449         return -1;
 450 }
 451
 452 int __init mac_nubus_sonic_probe(struct net_device* dev)
 453 {
 454         static int slots;
 455         struct nubus_dev* ndev = NULL;
 456         struct sonic_local* lp = netdev_priv(dev);
 457         unsigned long base_addr, prom_addr;
 458         u16 sonic_dcr;
 459         int id = -1;
 460         int reg_offset, dma_bitmode;
 461
 462         /* Find the first SONIC that hasn't been initialized already */
 463         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
 464                                        NUBUS_TYPE_ETHERNET, ndev)) != NULL)
 465         {
 466                 /* Have we seen it already? */
 467                 if (slots & (1<<ndev->board->slot))
 468                         continue;
 469                 slots |= 1<<ndev->board->slot;
 470
 471                 /* Is it one of ours? */
 472                 if ((id = macsonic_ident(ndev)) != -1)
 473                         break;
 474         }
 475
 476         if (ndev == NULL)
 477                 return -ENODEV;
 478
 479         switch (id) {
 480         case MACSONIC_DUODOCK:
 481                 base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
 482                 prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
 483                 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
 484                             SONIC_DCR_TFT0;
 485                 reg_offset = 2;
 486                 dma_bitmode = SONIC_BITMODE32;
 487                 break;
 488         case MACSONIC_APPLE:
 489                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 490                 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
 491                 sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
 492                 reg_offset = 0;
 493                 dma_bitmode = SONIC_BITMODE32;
 494                 break;
 495         case MACSONIC_APPLE16:
 496                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 497                 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
 498                 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
 499                             SONIC_DCR_PO1 | SONIC_DCR_BMS;
 500                 reg_offset = 0;
 501                 dma_bitmode = SONIC_BITMODE16;
 502                 break;
 503         case MACSONIC_DAYNALINK:
 504                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 505                 prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
 506                 sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
 507                             SONIC_DCR_PO1 | SONIC_DCR_BMS;
 508                 reg_offset = 0;
 509                 dma_bitmode = SONIC_BITMODE16;
 510                 break;
 511         case MACSONIC_DAYNA:
 512                 base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
 513                 prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
 514                 sonic_dcr = SONIC_DCR_BMS |
 515                             SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
 516                 reg_offset = 0;
 517                 dma_bitmode = SONIC_BITMODE16;
 518                 break;
 519         default:
 520                 printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
 521                 return -ENODEV;
 522         }
 523
 524         /* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
 525          * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
 526         dev->base_addr = base_addr;
 527         lp->reg_offset = reg_offset;
 528         lp->dma_bitmode = dma_bitmode;
 529         dev->irq = SLOT2IRQ(ndev->board->slot);
 530
 531         if (!sonic_version_printed) {
 532                 printk(KERN_INFO "%s", version);
 533                 sonic_version_printed = 1;
 534         }
 535         printk(KERN_INFO "%s: %s in slot %X\n",
 536                lp->device->bus_id, ndev->board->name, ndev->board->slot);
 537         printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
 538                lp->device->bus_id, SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);
 539
 540 #if 0 /* This is sometimes useful to find out how MacOS configured the card. */
 541         printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", lp->device->bus_id,
 542                SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
 543 #endif
 544
 545         /* Software reset, then initialize control registers. */
 546         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 547         SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
 548         /* This *must* be written back to in order to restore the
 549          * extended programmable output bits, since it may not have been
 550          * initialised since the hardware reset. */
 551         SONIC_WRITE(SONIC_DCR2, 0);
 552
 553         /* Clear *and* disable interrupts to be on the safe side */
 554         SONIC_WRITE(SONIC_IMR, 0);
 555         SONIC_WRITE(SONIC_ISR, 0x7fff);
 556
 557         /* Now look for the MAC address. */
 558         if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
 559                 return -ENODEV;
 560
 561         /* Shared init code */
 562         return macsonic_init(dev);
 563 }
 564
 565 static int __init mac_sonic_probe(struct platform_device *pdev)
 566 {
 567         struct net_device *dev;
 568         struct sonic_local *lp;
 569         int err;
 570         int i;
 571
 572         dev = alloc_etherdev(sizeof(struct sonic_local));
 573         if (!dev)
 574                 return -ENOMEM;
 575
 576         lp = netdev_priv(dev);
 577         lp->device = &pdev->dev;
 578         SET_NETDEV_DEV(dev, &pdev->dev);
 579         SET_MODULE_OWNER(dev);
 580
 581         /* This will catch fatal stuff like -ENOMEM as well as success */
 582         err = mac_onboard_sonic_probe(dev);
 583         if (err == 0)
 584                 goto found;
 585         if (err != -ENODEV)
 586                 goto out;
 587         err = mac_nubus_sonic_probe(dev);
 588         if (err)
 589                 goto out;
 590 found:
 591         err = register_netdev(dev);
 592         if (err)
 593                 goto out;
 594
 595         printk("%s: MAC ", dev->name);
 596         for (i = 0; i < 6; i++) {
 597                 printk("%2.2x", dev->dev_addr[i]);
 598                 if (i < 5)
 599                         printk(":");
 600         }
 601         printk(" IRQ %d\n", dev->irq);
 602
 603         return 0;
 604
 605 out:
 606         free_netdev(dev);
 607
 608         return err;
 609 }
 610
 611 MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
 612 module_param(sonic_debug, int, 0);
 613 MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
 614
 615 #include "sonic.c"
 616
 617 static int __devexit mac_sonic_device_remove (struct platform_device *pdev)
 618 {
 619         struct net_device *dev = platform_get_drvdata(pdev);
 620         struct sonic_local* lp = netdev_priv(dev);
 621
 622         unregister_netdev(dev);
 623         dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 624                           lp->descriptors, lp->descriptors_laddr);
 625         free_netdev(dev);
 626
 627         return 0;
 628 }
 629
 630 static struct platform_driver mac_sonic_driver = {
 631         .probe  = mac_sonic_probe,
 632         .remove = __devexit_p(mac_sonic_device_remove),
 633         .driver = {
 634                 .name = mac_sonic_string,
 635         },
 636 };
 637
 638 static int __init mac_sonic_init_module(void)
 639 {
 640         int err;
 641
 642         if ((err = platform_driver_register(&mac_sonic_driver))) {
 643                 printk(KERN_ERR "Driver registration failed\n");
 644                 return err;
 645         }
 646
 647         mac_sonic_device = platform_device_alloc(mac_sonic_string, 0);
 648         if (!mac_sonic_device)
 649                 goto out_unregister;
 650
 651         if (platform_device_add(mac_sonic_device)) {
 652                 platform_device_put(mac_sonic_device);
 653                 mac_sonic_device = NULL;
 654         }
 655
 656         return 0;
 657
 658 out_unregister:
 659         platform_driver_unregister(&mac_sonic_driver);
 660
 661         return -ENOMEM;
 662 }
 663
 664 static void __exit mac_sonic_cleanup_module(void)
 665 {
 666         platform_driver_unregister(&mac_sonic_driver);
 667
 668         if (mac_sonic_device) {
 669                 platform_device_unregister(mac_sonic_device);
 670                 mac_sonic_device = NULL;
 671         }
 672 }
 673
 674 module_init(mac_sonic_init_module);
 675 module_exit(mac_sonic_cleanup_module);