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