aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/natsemi/macsonic.c
blob: eaddbb7c24abf848bb9f16ac23f0e2ab41901846 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
/*
 * macsonic.c
 *
 * (C) 2005 Finn Thain
 *
 * Converted to DMA API, converted to unified driver model, made it work as
 * a module again, and from the mac68k project, introduced more 32-bit cards
 * and dhd's support for 16-bit cards.
 *
 * (C) 1998 Alan Cox
 *
 * Debugging Andreas Ehliar, Michael Schmitz
 *
 * Based on code
 * (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.franken.de)
 *
 * This driver is based on work from Andreas Busse, but most of
 * the code is rewritten.
 *
 * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
 *
 * A driver for the Mac onboard Sonic ethernet chip.
 *
 * 98/12/21 MSch: judged from tests on Q800, it's basically working,
 *		  but eating up both receive and transmit resources
 *		  and duplicating packets. Needs more testing.
 *
 * 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed.
 *
 * 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems
 *          on centris.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/gfp.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/nubus.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/bitrev.h>
#include <linux/slab.h>

#include <asm/bootinfo.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/hwtest.h>
#include <asm/dma.h>
#include <asm/macintosh.h>
#include <asm/macints.h>
#include <asm/mac_via.h>

static char mac_sonic_string[] = "macsonic";

#include "sonic.h"

/* These should basically be bus-size and endian independent (since
   the SONIC is at least smart enough that it uses the same endianness
   as the host, unlike certain less enlightened Macintosh NICs) */
#define SONIC_READ(reg) (nubus_readw(dev->base_addr + (reg * 4) \
	      + lp->reg_offset))
#define SONIC_WRITE(reg,val) (nubus_writew(val, dev->base_addr + (reg * 4) \
	      + lp->reg_offset))

/* use 0 for production, 1 for verification, >1 for debug */
#ifdef SONIC_DEBUG
static unsigned int sonic_debug = SONIC_DEBUG;
#else
static unsigned int sonic_debug = 1;
#endif

static int sonic_version_printed;

/* For onboard SONIC */
#define ONBOARD_SONIC_REGISTERS	0x50F0A000
#define ONBOARD_SONIC_PROM_BASE	0x50f08000

enum macsonic_type {
	MACSONIC_DUODOCK,
	MACSONIC_APPLE,
	MACSONIC_APPLE16,
	MACSONIC_DAYNA,
	MACSONIC_DAYNALINK
};

/* For the built-in SONIC in the Duo Dock */
#define DUODOCK_SONIC_REGISTERS 0xe10000
#define DUODOCK_SONIC_PROM_BASE 0xe12000

/* For Apple-style NuBus SONIC */
#define APPLE_SONIC_REGISTERS	0
#define APPLE_SONIC_PROM_BASE	0x40000

/* Daynalink LC SONIC */
#define DAYNALINK_PROM_BASE 0x400000

/* For Dayna-style NuBus SONIC (haven't seen one yet) */
#define DAYNA_SONIC_REGISTERS   0x180000
/* This is what OpenBSD says.  However, this is definitely in NuBus
   ROM space so we should be able to get it by walking the NuBus
   resource directories */
#define DAYNA_SONIC_MAC_ADDR	0xffe004

#define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)

/*
 * For reversing the PROM address
 */

static inline void bit_reverse_addr(unsigned char addr[6])
{
	int i;

	for(i = 0; i < 6; i++)
		addr[i] = bitrev8(addr[i]);
}

static irqreturn_t macsonic_interrupt(int irq, void *dev_id)
{
	irqreturn_t result;
	unsigned long flags;

	local_irq_save(flags);
	result = sonic_interrupt(irq, dev_id);
	local_irq_restore(flags);
	return result;
}

static int macsonic_open(struct net_device* dev)
{
	int retval;

	retval = request_irq(dev->irq, sonic_interrupt, 0, "sonic", dev);
	if (retval) {
		printk(KERN_ERR "%s: unable to get IRQ %d.\n",
				dev->name, dev->irq);
		goto err;
	}
	/* Under the A/UX interrupt scheme, the onboard SONIC interrupt comes
	 * in at priority level 3. However, we sometimes get the level 2 inter-
	 * rupt as well, which must prevent re-entrance of the sonic handler.
	 */
	if (dev->irq == IRQ_AUTO_3) {
		retval = request_irq(IRQ_NUBUS_9, macsonic_interrupt, 0,
				     "sonic", dev);
		if (retval) {
			printk(KERN_ERR "%s: unable to get IRQ %d.\n",
					dev->name, IRQ_NUBUS_9);
			goto err_irq;
		}
	}
	retval = sonic_open(dev);
	if (retval)
		goto err_irq_nubus;
	return 0;

err_irq_nubus:
	if (dev->irq == IRQ_AUTO_3)
		free_irq(IRQ_NUBUS_9, dev);
err_irq:
	free_irq(dev->irq, dev);
err:
	return retval;
}

static int macsonic_close(struct net_device* dev)
{
	int err;
	err = sonic_close(dev);
	free_irq(dev->irq, dev);
	if (dev->irq == IRQ_AUTO_3)
		free_irq(IRQ_NUBUS_9, dev);
	return err;
}

static const struct net_device_ops macsonic_netdev_ops = {
	.ndo_open		= macsonic_open,
	.ndo_stop		= macsonic_close,
	.ndo_start_xmit		= sonic_send_packet,
	.ndo_set_rx_mode	= sonic_multicast_list,
	.ndo_tx_timeout		= sonic_tx_timeout,
	.ndo_get_stats		= sonic_get_stats,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_change_mtu		= eth_change_mtu,
	.ndo_set_mac_address	= eth_mac_addr,
};

static int macsonic_init(struct net_device *dev)
{
	struct sonic_local* lp = netdev_priv(dev);

	/* Allocate the entire chunk of memory for the descriptors.
           Note that this cannot cross a 64K boundary. */
	if ((lp->descriptors = dma_alloc_coherent(lp->device,
	            SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
	            &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
		printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
		       dev_name(lp->device));
		return -ENOMEM;
	}

	/* Now set up the pointers to point to the appropriate places */
	lp->cda = lp->descriptors;
	lp->tda = lp->cda + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	lp->cda_laddr = lp->descriptors_laddr;
	lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	dev->netdev_ops = &macsonic_netdev_ops;
	dev->watchdog_timeo = TX_TIMEOUT;

	/*
	 * clear tally counter
	 */
	SONIC_WRITE(SONIC_CRCT, 0xffff);
	SONIC_WRITE(SONIC_FAET, 0xffff);
	SONIC_WRITE(SONIC_MPT, 0xffff);

	return 0;
}

#define INVALID_MAC(mac) (memcmp(mac, "\x08\x00\x07", 3) && \
                          memcmp(mac, "\x00\xA0\x40", 3) && \
                          memcmp(mac, "\x00\x80\x19", 3) && \
                          memcmp(mac, "\x00\x05\x02", 3))

static void mac_onboard_sonic_ethernet_addr(struct net_device *dev)
{
	struct sonic_local *lp = netdev_priv(dev);
	const int prom_addr = ONBOARD_SONIC_PROM_BASE;
	unsigned short val;

	/*
	 * On NuBus boards we can sometimes look in the ROM resources.
	 * No such luck for comm-slot/onboard.
	 * On the PowerBook 520, the PROM base address is a mystery.
	 */
	if (hwreg_present((void *)prom_addr)) {
		int i;

		for (i = 0; i < 6; i++)
			dev->dev_addr[i] = SONIC_READ_PROM(i);
		if (!INVALID_MAC(dev->dev_addr))
			return;

		/*
		 * Most of the time, the address is bit-reversed. The NetBSD
		 * source has a rather long and detailed historical account of
		 * why this is so.
		 */
		bit_reverse_addr(dev->dev_addr);
		if (!INVALID_MAC(dev->dev_addr))
			return;

		/*
		 * If we still have what seems to be a bogus address, we'll
		 * look in the CAM. The top entry should be ours.
		 */
		printk(KERN_WARNING "macsonic: MAC address in PROM seems "
		                    "to be invalid, trying CAM\n");
	} else {
		printk(KERN_WARNING "macsonic: cannot read MAC address from "
		                    "PROM, trying CAM\n");
	}

	/* This only works if MacOS has already initialized the card. */

	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
	SONIC_WRITE(SONIC_CEP, 15);

	val = SONIC_READ(SONIC_CAP2);
	dev->dev_addr[5] = val >> 8;
	dev->dev_addr[4] = val & 0xff;
	val = SONIC_READ(SONIC_CAP1);
	dev->dev_addr[3] = val >> 8;
	dev->dev_addr[2] = val & 0xff;
	val = SONIC_READ(SONIC_CAP0);
	dev->dev_addr[1] = val >> 8;
	dev->dev_addr[0] = val & 0xff;

	if (!INVALID_MAC(dev->dev_addr))
		return;

	/* Still nonsense ... messed up someplace! */

	printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
	                    "seems invalid, will use a random MAC\n");
	eth_hw_addr_random(dev);
}

static int mac_onboard_sonic_probe(struct net_device *dev)
{
	struct sonic_local* lp = netdev_priv(dev);
	int sr;
	int commslot = 0;

	if (!MACH_IS_MAC)
		return -ENODEV;

	printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");

	/* Bogus probing, on the models which may or may not have
	   Ethernet (BTW, the Ethernet *is* always at the same
	   address, and nothing else lives there, at least if Apple's
	   documentation is to be believed) */
	if (macintosh_config->ident == MAC_MODEL_Q630 ||
	    macintosh_config->ident == MAC_MODEL_P588 ||
	    macintosh_config->ident == MAC_MODEL_P575 ||
	    macintosh_config->ident == MAC_MODEL_C610) {
		unsigned long flags;
		int card_present;

		local_irq_save(flags);
		card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
		local_irq_restore(flags);

		if (!card_present) {
			printk("none.\n");
			return -ENODEV;
		}
		commslot = 1;
	}

	printk("yes\n");

	/* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
	 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
	dev->base_addr = ONBOARD_SONIC_REGISTERS;
	if (via_alt_mapping)
		dev->irq = IRQ_AUTO_3;
	else
		dev->irq = IRQ_NUBUS_9;

	if (!sonic_version_printed) {
		printk(KERN_INFO "%s", version);
		sonic_version_printed = 1;
	}
	printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
	       dev_name(lp->device), dev->base_addr);

	/* The PowerBook's SONIC is 16 bit always. */
	if (macintosh_config->ident == MAC_MODEL_PB520) {
		lp->reg_offset = 0;
		lp->dma_bitmode = SONIC_BITMODE16;
		sr = SONIC_READ(SONIC_SR);
	} else if (commslot) {
		/* Some of the comm-slot cards are 16 bit.  But some
		   of them are not.  The 32-bit cards use offset 2 and
		   have known revisions, we try reading the revision
		   register at offset 2, if we don't get a known revision
		   we assume 16 bit at offset 0.  */
		lp->reg_offset = 2;
		lp->dma_bitmode = SONIC_BITMODE16;

		sr = SONIC_READ(SONIC_SR);
		if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
			/* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
			lp->dma_bitmode = SONIC_BITMODE32;
		else {
			lp->dma_bitmode = SONIC_BITMODE16;
			lp->reg_offset = 0;
			sr = SONIC_READ(SONIC_SR);
		}
	} else {
		/* All onboard cards are at offset 2 with 32 bit DMA. */
		lp->reg_offset = 2;
		lp->dma_bitmode = SONIC_BITMODE32;
		sr = SONIC_READ(SONIC_SR);
	}
	printk(KERN_INFO
	       "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
	       dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);

#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
	printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
	       SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif

	/* Software reset, then initialize control registers. */
	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);

	SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
	                       SONIC_DCR_RFT1  | SONIC_DCR_TFT0 |
	                       (lp->dma_bitmode ? SONIC_DCR_DW : 0));

	/* This *must* be written back to in order to restore the
	 * extended programmable output bits, as it may not have been
	 * initialised since the hardware reset. */
	SONIC_WRITE(SONIC_DCR2, 0);

	/* Clear *and* disable interrupts to be on the safe side */
	SONIC_WRITE(SONIC_IMR, 0);
	SONIC_WRITE(SONIC_ISR, 0x7fff);

	/* Now look for the MAC address. */
	mac_onboard_sonic_ethernet_addr(dev);

	/* Shared init code */
	return macsonic_init(dev);
}

static int mac_nubus_sonic_ethernet_addr(struct net_device *dev,
						unsigned long prom_addr,
						int id)
{
	int i;
	for(i = 0; i < 6; i++)
		dev->dev_addr[i] = SONIC_READ_PROM(i);

	/* Some of the addresses are bit-reversed */
	if (id != MACSONIC_DAYNA)
		bit_reverse_addr(dev->dev_addr);

	return 0;
}

static int macsonic_ident(struct nubus_dev *ndev)
{
	if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
	    ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
		return MACSONIC_DAYNALINK;
	if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
	    ndev->dr_sw == NUBUS_DRSW_APPLE) {
		/* There has to be a better way to do this... */
		if (strstr(ndev->board->name, "DuoDock"))
			return MACSONIC_DUODOCK;
		else
			return MACSONIC_APPLE;
	}

	if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
	    ndev->dr_sw == NUBUS_DRSW_DAYNA)
		return MACSONIC_DAYNA;

	if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
	    ndev->dr_sw == 0) { /* huh? */
		return MACSONIC_APPLE16;
	}
	return -1;
}

static int mac_nubus_sonic_probe(struct net_device *dev)
{
	static int slots;
	struct nubus_dev* ndev = NULL;
	struct sonic_local* lp = netdev_priv(dev);
	unsigned long base_addr, prom_addr;
	u16 sonic_dcr;
	int id = -1;
	int reg_offset, dma_bitmode;

	/* Find the first SONIC that hasn't been initialized already */
	while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
				       NUBUS_TYPE_ETHERNET, ndev)) != NULL)
	{
		/* Have we seen it already? */
		if (slots & (1<<ndev->board->slot))
			continue;
		slots |= 1<<ndev->board->slot;

		/* Is it one of ours? */
		if ((id = macsonic_ident(ndev)) != -1)
			break;
	}

	if (ndev == NULL)
		return -ENODEV;

	switch (id) {
	case MACSONIC_DUODOCK:
		base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
		            SONIC_DCR_TFT0;
		reg_offset = 2;
		dma_bitmode = SONIC_BITMODE32;
		break;
	case MACSONIC_APPLE:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE32;
		break;
	case MACSONIC_APPLE16:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
		            SONIC_DCR_PO1 | SONIC_DCR_BMS;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	case MACSONIC_DAYNALINK:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
		sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
		            SONIC_DCR_PO1 | SONIC_DCR_BMS;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	case MACSONIC_DAYNA:
		base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
		sonic_dcr = SONIC_DCR_BMS |
		            SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	default:
		printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
		return -ENODEV;
	}

	/* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
	 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
	dev->base_addr = base_addr;
	lp->reg_offset = reg_offset;
	lp->dma_bitmode = dma_bitmode;
	dev->irq = SLOT2IRQ(ndev->board->slot);

	if (!sonic_version_printed) {
		printk(KERN_INFO "%s", version);
		sonic_version_printed = 1;
	}
	printk(KERN_INFO "%s: %s in slot %X\n",
	       dev_name(lp->device), ndev->board->name, ndev->board->slot);
	printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
	       dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);

#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
	printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
	       SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif

	/* Software reset, then initialize control registers. */
	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
	SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
	/* This *must* be written back to in order to restore the
	 * extended programmable output bits, since it may not have been
	 * initialised since the hardware reset. */
	SONIC_WRITE(SONIC_DCR2, 0);

	/* Clear *and* disable interrupts to be on the safe side */
	SONIC_WRITE(SONIC_IMR, 0);
	SONIC_WRITE(SONIC_ISR, 0x7fff);

	/* Now look for the MAC address. */
	if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
		return -ENODEV;

	/* Shared init code */
	return macsonic_init(dev);
}

static int mac_sonic_probe(struct platform_device *pdev)
{
	struct net_device *dev;
	struct sonic_local *lp;
	int err;

	dev = alloc_etherdev(sizeof(struct sonic_local));
	if (!dev)
		return -ENOMEM;

	lp = netdev_priv(dev);
	lp->device = &pdev->dev;
	SET_NETDEV_DEV(dev, &pdev->dev);
	platform_set_drvdata(pdev, dev);

	/* This will catch fatal stuff like -ENOMEM as well as success */
	err = mac_onboard_sonic_probe(dev);
	if (err == 0)
		goto found;
	if (err != -ENODEV)
		goto out;
	err = mac_nubus_sonic_probe(dev);
	if (err)
		goto out;
found:
	err = register_netdev(dev);
	if (err)
		goto out;

	printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);

	return 0;

out:
	free_netdev(dev);

	return err;
}

MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
module_param(sonic_debug, int, 0);
MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
MODULE_ALIAS("platform:macsonic");

#include "sonic.c"

static int mac_sonic_device_remove(struct platform_device *pdev)
{
	struct net_device *dev = platform_get_drvdata(pdev);
	struct sonic_local* lp = netdev_priv(dev);

	unregister_netdev(dev);
	dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
	                  lp->descriptors, lp->descriptors_laddr);
	free_netdev(dev);

	return 0;
}

static struct platform_driver mac_sonic_driver = {
	.probe  = mac_sonic_probe,
	.remove = mac_sonic_device_remove,
	.driver	= {
		.name	= mac_sonic_string,
		.owner	= THIS_MODULE,
	},
};

module_platform_driver(mac_sonic_driver);