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/gfp.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/init.h>
  41 #include <linux/ioport.h>
  42 #include <linux/in.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 #include <linux/slab.h>
  54
  55 #include <asm/bootinfo.h>
  56 #include <asm/system.h>
  57 #include <asm/pgtable.h>
  58 #include <asm/io.h>
  59 #include <asm/hwtest.h>
  60 #include <asm/dma.h>
  61 #include <asm/macintosh.h>
  62 #include <asm/macints.h>
  63 #include <asm/mac_via.h>
  64
  65 static char mac_sonic_string[] = "macsonic";
  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 /* For onboard SONIC */
  87 #define ONBOARD_SONIC_REGISTERS 0x50F0A000
  88 #define ONBOARD_SONIC_PROM_BASE 0x50f08000
  89
  90 enum macsonic_type {
  91         MACSONIC_DUODOCK,
  92         MACSONIC_APPLE,
  93         MACSONIC_APPLE16,
  94         MACSONIC_DAYNA,
  95         MACSONIC_DAYNALINK
  96 };
  97
  98 /* For the built-in SONIC in the Duo Dock */
  99 #define DUODOCK_SONIC_REGISTERS 0xe10000
 100 #define DUODOCK_SONIC_PROM_BASE 0xe12000
 101
 102 /* For Apple-style NuBus SONIC */
 103 #define APPLE_SONIC_REGISTERS   0
 104 #define APPLE_SONIC_PROM_BASE   0x40000
 105
 106 /* Daynalink LC SONIC */
 107 #define DAYNALINK_PROM_BASE 0x400000
 108
 109 /* For Dayna-style NuBus SONIC (haven't seen one yet) */
 110 #define DAYNA_SONIC_REGISTERS   0x180000
 111 /* This is what OpenBSD says.  However, this is definitely in NuBus
 112    ROM space so we should be able to get it by walking the NuBus
 113    resource directories */
 114 #define DAYNA_SONIC_MAC_ADDR    0xffe004
 115
 116 #define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)
 117
 118 /*
 119  * For reversing the PROM address
 120  */
 121
 122 static inline void bit_reverse_addr(unsigned char addr[6])
 123 {
 124         int i;
 125
 126         for(i = 0; i < 6; i++)
 127                 addr[i] = bitrev8(addr[i]);
 128 }
 129
 130 static irqreturn_t macsonic_interrupt(int irq, void *dev_id)
 131 {
 132         irqreturn_t result;
 133         unsigned long flags;
 134
 135         local_irq_save(flags);
 136         result = sonic_interrupt(irq, dev_id);
 137         local_irq_restore(flags);
 138         return result;
 139 }
 140
 141 static int macsonic_open(struct net_device* dev)
 142 {
 143         if (request_irq(dev->irq, sonic_interrupt, IRQ_FLG_FAST, "sonic", dev)) {
 144                 printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 145                 return -EAGAIN;
 146         }
 147         /* Under the A/UX interrupt scheme, the onboard SONIC interrupt comes
 148          * in at priority level 3. However, we sometimes get the level 2 inter-
 149          * rupt as well, which must prevent re-entrance of the sonic handler.
 150          */
 151         if (dev->irq == IRQ_AUTO_3)
 152                 if (request_irq(IRQ_NUBUS_9, macsonic_interrupt, IRQ_FLG_FAST, "sonic", dev)) {
 153                         printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, IRQ_NUBUS_9);
 154                         free_irq(dev->irq, dev);
 155                         return -EAGAIN;
 156                 }
 157         return sonic_open(dev);
 158 }
 159
 160 static int macsonic_close(struct net_device* dev)
 161 {
 162         int err;
 163         err = sonic_close(dev);
 164         free_irq(dev->irq, dev);
 165         if (dev->irq == IRQ_AUTO_3)
 166                 free_irq(IRQ_NUBUS_9, dev);
 167         return err;
 168 }
 169
 170 static const struct net_device_ops macsonic_netdev_ops = {
 171         .ndo_open               = macsonic_open,
 172         .ndo_stop               = macsonic_close,
 173         .ndo_start_xmit         = sonic_send_packet,
 174         .ndo_set_multicast_list = sonic_multicast_list,
 175         .ndo_tx_timeout         = sonic_tx_timeout,
 176         .ndo_get_stats          = sonic_get_stats,
 177         .ndo_validate_addr      = eth_validate_addr,
 178         .ndo_change_mtu         = eth_change_mtu,
 179         .ndo_set_mac_address    = eth_mac_addr,
 180 };
 181
 182 static int __devinit macsonic_init(struct net_device *dev)
 183 {
 184         struct sonic_local* lp = netdev_priv(dev);
 185
 186         /* Allocate the entire chunk of memory for the descriptors.
 187            Note that this cannot cross a 64K boundary. */
 188         if ((lp->descriptors = dma_alloc_coherent(lp->device,
 189                     SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 190                     &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
 191                 printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
 192                        dev_name(lp->device));
 193                 return -ENOMEM;
 194         }
 195
 196         /* Now set up the pointers to point to the appropriate places */
 197         lp->cda = lp->descriptors;
 198         lp->tda = lp->cda + (SIZEOF_SONIC_CDA
 199                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 200         lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
 201                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 202         lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
 203                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 204
 205         lp->cda_laddr = lp->descriptors_laddr;
 206         lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
 207                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 208         lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
 209                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 210         lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
 211                              * SONIC_BUS_SCALE(lp->dma_bitmode));
 212
 213         dev->netdev_ops = &macsonic_netdev_ops;
 214         dev->watchdog_timeo = TX_TIMEOUT;
 215
 216         /*
 217          * clear tally counter
 218          */
 219         SONIC_WRITE(SONIC_CRCT, 0xffff);
 220         SONIC_WRITE(SONIC_FAET, 0xffff);
 221         SONIC_WRITE(SONIC_MPT, 0xffff);
 222
 223         return 0;
 224 }
 225
 226 #define INVALID_MAC(mac) (memcmp(mac, "\x08\x00\x07", 3) && \
 227                           memcmp(mac, "\x00\xA0\x40", 3) && \
 228                           memcmp(mac, "\x00\x80\x19", 3) && \
 229                           memcmp(mac, "\x00\x05\x02", 3))
 230
 231 static void __devinit mac_onboard_sonic_ethernet_addr(struct net_device *dev)
 232 {
 233         struct sonic_local *lp = netdev_priv(dev);
 234         const int prom_addr = ONBOARD_SONIC_PROM_BASE;
 235         unsigned short val;
 236
 237         /*
 238          * On NuBus boards we can sometimes look in the ROM resources.
 239          * No such luck for comm-slot/onboard.
 240          * On the PowerBook 520, the PROM base address is a mystery.
 241          */
 242         if (hwreg_present((void *)prom_addr)) {
 243                 int i;
 244
 245                 for (i = 0; i < 6; i++)
 246                         dev->dev_addr[i] = SONIC_READ_PROM(i);
 247                 if (!INVALID_MAC(dev->dev_addr))
 248                         return;
 249
 250                 /*
 251                  * Most of the time, the address is bit-reversed. The NetBSD
 252                  * source has a rather long and detailed historical account of
 253                  * why this is so.
 254                  */
 255                 bit_reverse_addr(dev->dev_addr);
 256                 if (!INVALID_MAC(dev->dev_addr))
 257                         return;
 258
 259                 /*
 260                  * If we still have what seems to be a bogus address, we'll
 261                  * look in the CAM. The top entry should be ours.
 262                  */
 263                 printk(KERN_WARNING "macsonic: MAC address in PROM seems "
 264                                     "to be invalid, trying CAM\n");
 265         } else {
 266                 printk(KERN_WARNING "macsonic: cannot read MAC address from "
 267                                     "PROM, trying CAM\n");
 268         }
 269
 270         /* This only works if MacOS has already initialized the card. */
 271
 272         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 273         SONIC_WRITE(SONIC_CEP, 15);
 274
 275         val = SONIC_READ(SONIC_CAP2);
 276         dev->dev_addr[5] = val >> 8;
 277         dev->dev_addr[4] = val & 0xff;
 278         val = SONIC_READ(SONIC_CAP1);
 279         dev->dev_addr[3] = val >> 8;
 280         dev->dev_addr[2] = val & 0xff;
 281         val = SONIC_READ(SONIC_CAP0);
 282         dev->dev_addr[1] = val >> 8;
 283         dev->dev_addr[0] = val & 0xff;
 284
 285         if (!INVALID_MAC(dev->dev_addr))
 286                 return;
 287
 288         /* Still nonsense ... messed up someplace! */
 289
 290         printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
 291                             "seems invalid, will use a random MAC\n");
 292         random_ether_addr(dev->dev_addr);
 293 }
 294
 295 static int __devinit mac_onboard_sonic_probe(struct net_device *dev)
 296 {
 297         /* Bwahahaha */
 298         static int once_is_more_than_enough;
 299         struct sonic_local* lp = netdev_priv(dev);
 300         int sr;
 301         int commslot = 0;
 302
 303         if (once_is_more_than_enough)
 304                 return -ENODEV;
 305         once_is_more_than_enough = 1;
 306
 307         if (!MACH_IS_MAC)
 308                 return -ENODEV;
 309
 310         if (macintosh_config->ether_type != MAC_ETHER_SONIC)
 311                 return -ENODEV;
 312
 313         printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
 314
 315         /* Bogus probing, on the models which may or may not have
 316            Ethernet (BTW, the Ethernet *is* always at the same
 317            address, and nothing else lives there, at least if Apple's
 318            documentation is to be believed) */
 319         if (macintosh_config->ident == MAC_MODEL_Q630 ||
 320             macintosh_config->ident == MAC_MODEL_P588 ||
 321             macintosh_config->ident == MAC_MODEL_P575 ||
 322             macintosh_config->ident == MAC_MODEL_C610) {
 323                 unsigned long flags;
 324                 int card_present;
 325
 326                 local_irq_save(flags);
 327                 card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
 328                 local_irq_restore(flags);
 329
 330                 if (!card_present) {
 331                         printk("none.\n");
 332                         return -ENODEV;
 333                 }
 334                 commslot = 1;
 335         }
 336
 337         printk("yes\n");
 338
 339         /* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
 340          * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
 341         dev->base_addr = ONBOARD_SONIC_REGISTERS;
 342         if (via_alt_mapping)
 343                 dev->irq = IRQ_AUTO_3;
 344         else
 345                 dev->irq = IRQ_NUBUS_9;
 346
 347         if (!sonic_version_printed) {
 348                 printk(KERN_INFO "%s", version);
 349                 sonic_version_printed = 1;
 350         }
 351         printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
 352                dev_name(lp->device), dev->base_addr);
 353
 354         /* The PowerBook's SONIC is 16 bit always. */
 355         if (macintosh_config->ident == MAC_MODEL_PB520) {
 356                 lp->reg_offset = 0;
 357                 lp->dma_bitmode = SONIC_BITMODE16;
 358                 sr = SONIC_READ(SONIC_SR);
 359         } else if (commslot) {
 360                 /* Some of the comm-slot cards are 16 bit.  But some
 361                    of them are not.  The 32-bit cards use offset 2 and
 362                    have known revisions, we try reading the revision
 363                    register at offset 2, if we don't get a known revision
 364                    we assume 16 bit at offset 0.  */
 365                 lp->reg_offset = 2;
 366                 lp->dma_bitmode = SONIC_BITMODE16;
 367
 368                 sr = SONIC_READ(SONIC_SR);
 369                 if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
 370                         /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
 371                         lp->dma_bitmode = SONIC_BITMODE32;
 372                 else {
 373                         lp->dma_bitmode = SONIC_BITMODE16;
 374                         lp->reg_offset = 0;
 375                         sr = SONIC_READ(SONIC_SR);
 376                 }
 377         } else {
 378                 /* All onboard cards are at offset 2 with 32 bit DMA. */
 379                 lp->reg_offset = 2;
 380                 lp->dma_bitmode = SONIC_BITMODE32;
 381                 sr = SONIC_READ(SONIC_SR);
 382         }
 383         printk(KERN_INFO
 384                "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
 385                dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);
 386
 387 #if 0 /* This is sometimes useful to find out how MacOS configured the card. */
 388         printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
 389                SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
 390 #endif
 391
 392         /* Software reset, then initialize control registers. */
 393         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 394
 395         SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
 396                                SONIC_DCR_RFT1  | SONIC_DCR_TFT0 |
 397                                (lp->dma_bitmode ? SONIC_DCR_DW : 0));
 398
 399         /* This *must* be written back to in order to restore the
 400          * extended programmable output bits, as it may not have been
 401          * initialised since the hardware reset. */
 402         SONIC_WRITE(SONIC_DCR2, 0);
 403
 404         /* Clear *and* disable interrupts to be on the safe side */
 405         SONIC_WRITE(SONIC_IMR, 0);
 406         SONIC_WRITE(SONIC_ISR, 0x7fff);
 407
 408         /* Now look for the MAC address. */
 409         mac_onboard_sonic_ethernet_addr(dev);
 410
 411         /* Shared init code */
 412         return macsonic_init(dev);
 413 }
 414
 415 static int __devinit mac_nubus_sonic_ethernet_addr(struct net_device *dev,
 416                                                 unsigned long prom_addr,
 417                                                 int id)
 418 {
 419         int i;
 420         for(i = 0; i < 6; i++)
 421                 dev->dev_addr[i] = SONIC_READ_PROM(i);
 422
 423         /* Some of the addresses are bit-reversed */
 424         if (id != MACSONIC_DAYNA)
 425                 bit_reverse_addr(dev->dev_addr);
 426
 427         return 0;
 428 }
 429
 430 static int __devinit macsonic_ident(struct nubus_dev *ndev)
 431 {
 432         if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
 433             ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
 434                 return MACSONIC_DAYNALINK;
 435         if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
 436             ndev->dr_sw == NUBUS_DRSW_APPLE) {
 437                 /* There has to be a better way to do this... */
 438                 if (strstr(ndev->board->name, "DuoDock"))
 439                         return MACSONIC_DUODOCK;
 440                 else
 441                         return MACSONIC_APPLE;
 442         }
 443
 444         if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
 445             ndev->dr_sw == NUBUS_DRSW_DAYNA)
 446                 return MACSONIC_DAYNA;
 447
 448         if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
 449             ndev->dr_sw == 0) { /* huh? */
 450                 return MACSONIC_APPLE16;
 451         }
 452         return -1;
 453 }
 454
 455 static int __devinit mac_nubus_sonic_probe(struct net_device *dev)
 456 {
 457         static int slots;
 458         struct nubus_dev* ndev = NULL;
 459         struct sonic_local* lp = netdev_priv(dev);
 460         unsigned long base_addr, prom_addr;
 461         u16 sonic_dcr;
 462         int id = -1;
 463         int reg_offset, dma_bitmode;
 464
 465         /* Find the first SONIC that hasn't been initialized already */
 466         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
 467                                        NUBUS_TYPE_ETHERNET, ndev)) != NULL)
 468         {
 469                 /* Have we seen it already? */
 470                 if (slots & (1<<ndev->board->slot))
 471                         continue;
 472                 slots |= 1<<ndev->board->slot;
 473
 474                 /* Is it one of ours? */
 475                 if ((id = macsonic_ident(ndev)) != -1)
 476                         break;
 477         }
 478
 479         if (ndev == NULL)
 480                 return -ENODEV;
 481
 482         switch (id) {
 483         case MACSONIC_DUODOCK:
 484                 base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
 485                 prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
 486                 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
 487                             SONIC_DCR_TFT0;
 488                 reg_offset = 2;
 489                 dma_bitmode = SONIC_BITMODE32;
 490                 break;
 491         case MACSONIC_APPLE:
 492                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 493                 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
 494                 sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
 495                 reg_offset = 0;
 496                 dma_bitmode = SONIC_BITMODE32;
 497                 break;
 498         case MACSONIC_APPLE16:
 499                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 500                 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
 501                 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
 502                             SONIC_DCR_PO1 | SONIC_DCR_BMS;
 503                 reg_offset = 0;
 504                 dma_bitmode = SONIC_BITMODE16;
 505                 break;
 506         case MACSONIC_DAYNALINK:
 507                 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
 508                 prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
 509                 sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
 510                             SONIC_DCR_PO1 | SONIC_DCR_BMS;
 511                 reg_offset = 0;
 512                 dma_bitmode = SONIC_BITMODE16;
 513                 break;
 514         case MACSONIC_DAYNA:
 515                 base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
 516                 prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
 517                 sonic_dcr = SONIC_DCR_BMS |
 518                             SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
 519                 reg_offset = 0;
 520                 dma_bitmode = SONIC_BITMODE16;
 521                 break;
 522         default:
 523                 printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
 524                 return -ENODEV;
 525         }
 526
 527         /* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
 528          * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
 529         dev->base_addr = base_addr;
 530         lp->reg_offset = reg_offset;
 531         lp->dma_bitmode = dma_bitmode;
 532         dev->irq = SLOT2IRQ(ndev->board->slot);
 533
 534         if (!sonic_version_printed) {
 535                 printk(KERN_INFO "%s", version);
 536                 sonic_version_printed = 1;
 537         }
 538         printk(KERN_INFO "%s: %s in slot %X\n",
 539                dev_name(lp->device), ndev->board->name, ndev->board->slot);
 540         printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
 541                dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);
 542
 543 #if 0 /* This is sometimes useful to find out how MacOS configured the card. */
 544         printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
 545                SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
 546 #endif
 547
 548         /* Software reset, then initialize control registers. */
 549         SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
 550         SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
 551         /* This *must* be written back to in order to restore the
 552          * extended programmable output bits, since it may not have been
 553          * initialised since the hardware reset. */
 554         SONIC_WRITE(SONIC_DCR2, 0);
 555
 556         /* Clear *and* disable interrupts to be on the safe side */
 557         SONIC_WRITE(SONIC_IMR, 0);
 558         SONIC_WRITE(SONIC_ISR, 0x7fff);
 559
 560         /* Now look for the MAC address. */
 561         if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
 562                 return -ENODEV;
 563
 564         /* Shared init code */
 565         return macsonic_init(dev);
 566 }
 567
 568 static int __devinit mac_sonic_probe(struct platform_device *pdev)
 569 {
 570         struct net_device *dev;
 571         struct sonic_local *lp;
 572         int err;
 573
 574         dev = alloc_etherdev(sizeof(struct sonic_local));
 575         if (!dev)
 576                 return -ENOMEM;
 577
 578         lp = netdev_priv(dev);
 579         lp->device = &pdev->dev;
 580         SET_NETDEV_DEV(dev, &pdev->dev);
 581         platform_set_drvdata(pdev, dev);
 582
 583         /* This will catch fatal stuff like -ENOMEM as well as success */
 584         err = mac_onboard_sonic_probe(dev);
 585         if (err == 0)
 586                 goto found;
 587         if (err != -ENODEV)
 588                 goto out;
 589         err = mac_nubus_sonic_probe(dev);
 590         if (err)
 591                 goto out;
 592 found:
 593         err = register_netdev(dev);
 594         if (err)
 595                 goto out;
 596
 597         printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
 598
 599         return 0;
 600
 601 out:
 602         free_netdev(dev);
 603
 604         return err;
 605 }
 606
 607 MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
 608 module_param(sonic_debug, int, 0);
 609 MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
 610 MODULE_ALIAS("platform:macsonic");
 611
 612 #include "sonic.c"
 613
 614 static int __devexit mac_sonic_device_remove (struct platform_device *pdev)
 615 {
 616         struct net_device *dev = platform_get_drvdata(pdev);
 617         struct sonic_local* lp = netdev_priv(dev);
 618
 619         unregister_netdev(dev);
 620         dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 621                           lp->descriptors, lp->descriptors_laddr);
 622         free_netdev(dev);
 623
 624         return 0;
 625 }
 626
 627 static struct platform_driver mac_sonic_driver = {
 628         .probe  = mac_sonic_probe,
 629         .remove = __devexit_p(mac_sonic_device_remove),
 630         .driver = {
 631                 .name   = mac_sonic_string,
 632                 .owner  = THIS_MODULE,
 633         },
 634 };
 635
 636 static int __init mac_sonic_init_module(void)
 637 {
 638         return platform_driver_register(&mac_sonic_driver);
 639 }
 640
 641 static void __exit mac_sonic_cleanup_module(void)
 642 {
 643         platform_driver_unregister(&mac_sonic_driver);
 644 }
 645
 646 module_init(mac_sonic_init_module);
 647 module_exit(mac_sonic_cleanup_module);