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

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