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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * macsonic.c
4 *
5 * (C) 2005 Finn Thain
6 *
7 * Converted to DMA API, converted to unified driver model, made it work as
8 * a module again, and from the mac68k project, introduced more 32-bit cards
9 * and dhd's support for 16-bit cards.
10 *
11 * (C) 1998 Alan Cox
12 *
13 * Debugging Andreas Ehliar, Michael Schmitz
14 *
15 * Based on code
16 * (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.franken.de)
17 *
18 * This driver is based on work from Andreas Busse, but most of
19 * the code is rewritten.
20 *
21 * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
22 *
23 * A driver for the Mac onboard Sonic ethernet chip.
24 *
25 * 98/12/21 MSch: judged from tests on Q800, it's basically working,
26 * but eating up both receive and transmit resources
27 * and duplicating packets. Needs more testing.
28 *
29 * 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed.
30 *
31 * 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems
32 * on centris.
33 */
34
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/types.h>
38#include <linux/fcntl.h>
39#include <linux/gfp.h>
40#include <linux/interrupt.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#include <linux/pgtable.h>
55
56#include <asm/io.h>
57#include <asm/hwtest.h>
58#include <asm/dma.h>
59#include <asm/macintosh.h>
60#include <asm/macints.h>
61#include <asm/mac_via.h>
62
63#include "sonic.h"
64
65/* These should basically be bus-size and endian independent (since
66 the SONIC is at least smart enough that it uses the same endianness
67 as the host, unlike certain less enlightened Macintosh NICs) */
68#define SONIC_READ(reg) (nubus_readw(dev->base_addr + (reg * 4) \
69 + lp->reg_offset))
70#define SONIC_WRITE(reg,val) (nubus_writew(val, dev->base_addr + (reg * 4) \
71 + lp->reg_offset))
72
73/* For onboard SONIC */
74#define ONBOARD_SONIC_REGISTERS 0x50F0A000
75#define ONBOARD_SONIC_PROM_BASE 0x50f08000
76
77enum macsonic_type {
78 MACSONIC_DUODOCK,
79 MACSONIC_APPLE,
80 MACSONIC_APPLE16,
81 MACSONIC_DAYNA,
82 MACSONIC_DAYNALINK
83};
84
85/* For the built-in SONIC in the Duo Dock */
86#define DUODOCK_SONIC_REGISTERS 0xe10000
87#define DUODOCK_SONIC_PROM_BASE 0xe12000
88
89/* For Apple-style NuBus SONIC */
90#define APPLE_SONIC_REGISTERS 0
91#define APPLE_SONIC_PROM_BASE 0x40000
92
93/* Daynalink LC SONIC */
94#define DAYNALINK_PROM_BASE 0x400000
95
96/* For Dayna-style NuBus SONIC (haven't seen one yet) */
97#define DAYNA_SONIC_REGISTERS 0x180000
98/* This is what OpenBSD says. However, this is definitely in NuBus
99 ROM space so we should be able to get it by walking the NuBus
100 resource directories */
101#define DAYNA_SONIC_MAC_ADDR 0xffe004
102
103#define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)
104
105/*
106 * For reversing the PROM address
107 */
108
109static inline void bit_reverse_addr(unsigned char addr[6])
110{
111 int i;
112
113 for(i = 0; i < 6; i++)
114 addr[i] = bitrev8(addr[i]);
115}
116
117static int macsonic_open(struct net_device* dev)
118{
119 int retval;
120
121 retval = request_irq(dev->irq, sonic_interrupt, 0, "sonic", dev);
122 if (retval) {
123 printk(KERN_ERR "%s: unable to get IRQ %d.\n",
124 dev->name, dev->irq);
125 goto err;
126 }
127 /* Under the A/UX interrupt scheme, the onboard SONIC interrupt gets
128 * moved from level 2 to level 3. Unfortunately we still get some
129 * level 2 interrupts so register the handler for both.
130 */
131 if (dev->irq == IRQ_AUTO_3) {
132 retval = request_irq(IRQ_NUBUS_9, sonic_interrupt, 0,
133 "sonic", dev);
134 if (retval) {
135 printk(KERN_ERR "%s: unable to get IRQ %d.\n",
136 dev->name, IRQ_NUBUS_9);
137 goto err_irq;
138 }
139 }
140 retval = sonic_open(dev);
141 if (retval)
142 goto err_irq_nubus;
143 return 0;
144
145err_irq_nubus:
146 if (dev->irq == IRQ_AUTO_3)
147 free_irq(IRQ_NUBUS_9, dev);
148err_irq:
149 free_irq(dev->irq, dev);
150err:
151 return retval;
152}
153
154static int macsonic_close(struct net_device* dev)
155{
156 int err;
157 err = sonic_close(dev);
158 free_irq(dev->irq, dev);
159 if (dev->irq == IRQ_AUTO_3)
160 free_irq(IRQ_NUBUS_9, dev);
161 return err;
162}
163
164static const struct net_device_ops macsonic_netdev_ops = {
165 .ndo_open = macsonic_open,
166 .ndo_stop = macsonic_close,
167 .ndo_start_xmit = sonic_send_packet,
168 .ndo_set_rx_mode = sonic_multicast_list,
169 .ndo_tx_timeout = sonic_tx_timeout,
170 .ndo_get_stats = sonic_get_stats,
171 .ndo_validate_addr = eth_validate_addr,
172 .ndo_set_mac_address = eth_mac_addr,
173};
174
175static int macsonic_init(struct net_device *dev)
176{
177 struct sonic_local* lp = netdev_priv(dev);
178 int err = sonic_alloc_descriptors(dev);
179
180 if (err)
181 return err;
182
183 dev->netdev_ops = &macsonic_netdev_ops;
184 dev->watchdog_timeo = TX_TIMEOUT;
185
186 /*
187 * clear tally counter
188 */
189 SONIC_WRITE(SONIC_CRCT, 0xffff);
190 SONIC_WRITE(SONIC_FAET, 0xffff);
191 SONIC_WRITE(SONIC_MPT, 0xffff);
192
193 return 0;
194}
195
196#define INVALID_MAC(mac) (memcmp(mac, "\x08\x00\x07", 3) && \
197 memcmp(mac, "\x00\xA0\x40", 3) && \
198 memcmp(mac, "\x00\x80\x19", 3) && \
199 memcmp(mac, "\x00\x05\x02", 3))
200
201static void mac_onboard_sonic_ethernet_addr(struct net_device *dev)
202{
203 struct sonic_local *lp = netdev_priv(dev);
204 const int prom_addr = ONBOARD_SONIC_PROM_BASE;
205 unsigned short val;
206 u8 addr[ETH_ALEN];
207
208 /*
209 * On NuBus boards we can sometimes look in the ROM resources.
210 * No such luck for comm-slot/onboard.
211 * On the PowerBook 520, the PROM base address is a mystery.
212 */
213 if (hwreg_present((void *)prom_addr)) {
214 int i;
215
216 for (i = 0; i < 6; i++)
217 addr[i] = SONIC_READ_PROM(i);
218 eth_hw_addr_set(dev, addr);
219 if (!INVALID_MAC(dev->dev_addr))
220 return;
221
222 /*
223 * Most of the time, the address is bit-reversed. The NetBSD
224 * source has a rather long and detailed historical account of
225 * why this is so.
226 */
227 bit_reverse_addr(addr);
228 eth_hw_addr_set(dev, addr);
229 if (!INVALID_MAC(dev->dev_addr))
230 return;
231
232 /*
233 * If we still have what seems to be a bogus address, we'll
234 * look in the CAM. The top entry should be ours.
235 */
236 printk(KERN_WARNING "macsonic: MAC address in PROM seems "
237 "to be invalid, trying CAM\n");
238 } else {
239 printk(KERN_WARNING "macsonic: cannot read MAC address from "
240 "PROM, trying CAM\n");
241 }
242
243 /* This only works if MacOS has already initialized the card. */
244
245 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
246 SONIC_WRITE(SONIC_CEP, 15);
247
248 val = SONIC_READ(SONIC_CAP2);
249 addr[5] = val >> 8;
250 addr[4] = val & 0xff;
251 val = SONIC_READ(SONIC_CAP1);
252 addr[3] = val >> 8;
253 addr[2] = val & 0xff;
254 val = SONIC_READ(SONIC_CAP0);
255 addr[1] = val >> 8;
256 addr[0] = val & 0xff;
257 eth_hw_addr_set(dev, addr);
258
259 if (!INVALID_MAC(dev->dev_addr))
260 return;
261
262 /* Still nonsense ... messed up someplace! */
263
264 printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
265 "seems invalid, will use a random MAC\n");
266 eth_hw_addr_random(dev);
267}
268
269static int mac_onboard_sonic_probe(struct net_device *dev)
270{
271 struct sonic_local* lp = netdev_priv(dev);
272 int sr;
273 bool commslot = macintosh_config->expansion_type == MAC_EXP_PDS_COMM;
274
275 /* Bogus probing, on the models which may or may not have
276 Ethernet (BTW, the Ethernet *is* always at the same
277 address, and nothing else lives there, at least if Apple's
278 documentation is to be believed) */
279 if (commslot || macintosh_config->ident == MAC_MODEL_C610) {
280 int card_present;
281
282 card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
283 if (!card_present) {
284 pr_info("Onboard/comm-slot SONIC not found\n");
285 return -ENODEV;
286 }
287 }
288
289 /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
290 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
291 dev->base_addr = ONBOARD_SONIC_REGISTERS;
292 if (via_alt_mapping)
293 dev->irq = IRQ_AUTO_3;
294 else
295 dev->irq = IRQ_NUBUS_9;
296
297 /* The PowerBook's SONIC is 16 bit always. */
298 if (macintosh_config->ident == MAC_MODEL_PB520) {
299 lp->reg_offset = 0;
300 lp->dma_bitmode = SONIC_BITMODE16;
301 } else if (commslot) {
302 /* Some of the comm-slot cards are 16 bit. But some
303 of them are not. The 32-bit cards use offset 2 and
304 have known revisions, we try reading the revision
305 register at offset 2, if we don't get a known revision
306 we assume 16 bit at offset 0. */
307 lp->reg_offset = 2;
308 lp->dma_bitmode = SONIC_BITMODE16;
309
310 sr = SONIC_READ(SONIC_SR);
311 if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
312 /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
313 lp->dma_bitmode = SONIC_BITMODE32;
314 else {
315 lp->dma_bitmode = SONIC_BITMODE16;
316 lp->reg_offset = 0;
317 }
318 } else {
319 /* All onboard cards are at offset 2 with 32 bit DMA. */
320 lp->reg_offset = 2;
321 lp->dma_bitmode = SONIC_BITMODE32;
322 }
323
324 pr_info("Onboard/comm-slot SONIC, revision 0x%04x, %d bit DMA, register offset %d\n",
325 SONIC_READ(SONIC_SR), lp->dma_bitmode ? 32 : 16,
326 lp->reg_offset);
327
328 /* This is sometimes useful to find out how MacOS configured the card */
329 pr_debug("%s: DCR=0x%04x, DCR2=0x%04x\n", __func__,
330 SONIC_READ(SONIC_DCR) & 0xffff,
331 SONIC_READ(SONIC_DCR2) & 0xffff);
332
333 /* Software reset, then initialize control registers. */
334 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
335
336 SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
337 SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
338 (lp->dma_bitmode ? SONIC_DCR_DW : 0));
339
340 /* This *must* be written back to in order to restore the
341 * extended programmable output bits, as it may not have been
342 * initialised since the hardware reset. */
343 SONIC_WRITE(SONIC_DCR2, 0);
344
345 /* Clear *and* disable interrupts to be on the safe side */
346 SONIC_WRITE(SONIC_IMR, 0);
347 SONIC_WRITE(SONIC_ISR, 0x7fff);
348
349 /* Now look for the MAC address. */
350 mac_onboard_sonic_ethernet_addr(dev);
351
352 pr_info("SONIC ethernet @%08lx, MAC %pM, IRQ %d\n",
353 dev->base_addr, dev->dev_addr, dev->irq);
354
355 /* Shared init code */
356 return macsonic_init(dev);
357}
358
359static int mac_sonic_nubus_ethernet_addr(struct net_device *dev,
360 unsigned long prom_addr, int id)
361{
362 u8 addr[ETH_ALEN];
363 int i;
364
365 for(i = 0; i < 6; i++)
366 addr[i] = SONIC_READ_PROM(i);
367
368 /* Some of the addresses are bit-reversed */
369 if (id != MACSONIC_DAYNA)
370 bit_reverse_addr(addr);
371 eth_hw_addr_set(dev, addr);
372
373 return 0;
374}
375
376static int macsonic_ident(struct nubus_rsrc *fres)
377{
378 if (fres->dr_hw == NUBUS_DRHW_ASANTE_LC &&
379 fres->dr_sw == NUBUS_DRSW_SONIC_LC)
380 return MACSONIC_DAYNALINK;
381 if (fres->dr_hw == NUBUS_DRHW_SONIC &&
382 fres->dr_sw == NUBUS_DRSW_APPLE) {
383 /* There has to be a better way to do this... */
384 if (strstr(fres->board->name, "DuoDock"))
385 return MACSONIC_DUODOCK;
386 else
387 return MACSONIC_APPLE;
388 }
389
390 if (fres->dr_hw == NUBUS_DRHW_SMC9194 &&
391 fres->dr_sw == NUBUS_DRSW_DAYNA)
392 return MACSONIC_DAYNA;
393
394 if (fres->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
395 fres->dr_sw == 0) { /* huh? */
396 return MACSONIC_APPLE16;
397 }
398 return -1;
399}
400
401static int mac_sonic_nubus_probe_board(struct nubus_board *board, int id,
402 struct net_device *dev)
403{
404 struct sonic_local* lp = netdev_priv(dev);
405 unsigned long base_addr, prom_addr;
406 u16 sonic_dcr;
407 int reg_offset, dma_bitmode;
408
409 switch (id) {
410 case MACSONIC_DUODOCK:
411 base_addr = board->slot_addr + DUODOCK_SONIC_REGISTERS;
412 prom_addr = board->slot_addr + DUODOCK_SONIC_PROM_BASE;
413 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
414 SONIC_DCR_TFT0;
415 reg_offset = 2;
416 dma_bitmode = SONIC_BITMODE32;
417 break;
418 case MACSONIC_APPLE:
419 base_addr = board->slot_addr + APPLE_SONIC_REGISTERS;
420 prom_addr = board->slot_addr + APPLE_SONIC_PROM_BASE;
421 sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
422 reg_offset = 0;
423 dma_bitmode = SONIC_BITMODE32;
424 break;
425 case MACSONIC_APPLE16:
426 base_addr = board->slot_addr + APPLE_SONIC_REGISTERS;
427 prom_addr = board->slot_addr + APPLE_SONIC_PROM_BASE;
428 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
429 SONIC_DCR_PO1 | SONIC_DCR_BMS;
430 reg_offset = 0;
431 dma_bitmode = SONIC_BITMODE16;
432 break;
433 case MACSONIC_DAYNALINK:
434 base_addr = board->slot_addr + APPLE_SONIC_REGISTERS;
435 prom_addr = board->slot_addr + DAYNALINK_PROM_BASE;
436 sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
437 SONIC_DCR_PO1 | SONIC_DCR_BMS;
438 reg_offset = 0;
439 dma_bitmode = SONIC_BITMODE16;
440 break;
441 case MACSONIC_DAYNA:
442 base_addr = board->slot_addr + DAYNA_SONIC_REGISTERS;
443 prom_addr = board->slot_addr + DAYNA_SONIC_MAC_ADDR;
444 sonic_dcr = SONIC_DCR_BMS |
445 SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
446 reg_offset = 0;
447 dma_bitmode = SONIC_BITMODE16;
448 break;
449 default:
450 printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
451 return -ENODEV;
452 }
453
454 /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
455 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
456 dev->base_addr = base_addr;
457 lp->reg_offset = reg_offset;
458 lp->dma_bitmode = dma_bitmode;
459 dev->irq = SLOT2IRQ(board->slot);
460
461 dev_info(&board->dev, "%s, revision 0x%04x, %d bit DMA, register offset %d\n",
462 board->name, SONIC_READ(SONIC_SR),
463 lp->dma_bitmode ? 32 : 16, lp->reg_offset);
464
465 /* This is sometimes useful to find out how MacOS configured the card */
466 dev_dbg(&board->dev, "%s: DCR=0x%04x, DCR2=0x%04x\n", __func__,
467 SONIC_READ(SONIC_DCR) & 0xffff,
468 SONIC_READ(SONIC_DCR2) & 0xffff);
469
470 /* Software reset, then initialize control registers. */
471 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
472 SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
473 /* This *must* be written back to in order to restore the
474 * extended programmable output bits, since it may not have been
475 * initialised since the hardware reset. */
476 SONIC_WRITE(SONIC_DCR2, 0);
477
478 /* Clear *and* disable interrupts to be on the safe side */
479 SONIC_WRITE(SONIC_IMR, 0);
480 SONIC_WRITE(SONIC_ISR, 0x7fff);
481
482 /* Now look for the MAC address. */
483 if (mac_sonic_nubus_ethernet_addr(dev, prom_addr, id) != 0)
484 return -ENODEV;
485
486 dev_info(&board->dev, "SONIC ethernet @%08lx, MAC %pM, IRQ %d\n",
487 dev->base_addr, dev->dev_addr, dev->irq);
488
489 /* Shared init code */
490 return macsonic_init(dev);
491}
492
493static int mac_sonic_platform_probe(struct platform_device *pdev)
494{
495 struct net_device *dev;
496 struct sonic_local *lp;
497 int err;
498
499 dev = alloc_etherdev(sizeof(struct sonic_local));
500 if (!dev)
501 return -ENOMEM;
502
503 lp = netdev_priv(dev);
504 lp->device = &pdev->dev;
505 SET_NETDEV_DEV(dev, &pdev->dev);
506 platform_set_drvdata(pdev, dev);
507
508 err = mac_onboard_sonic_probe(dev);
509 if (err)
510 goto out;
511
512 sonic_msg_init(dev);
513
514 err = register_netdev(dev);
515 if (err)
516 goto undo_probe;
517
518 return 0;
519
520undo_probe:
521 dma_free_coherent(lp->device,
522 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
523 lp->descriptors, lp->descriptors_laddr);
524out:
525 free_netdev(dev);
526
527 return err;
528}
529
530MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
531MODULE_ALIAS("platform:macsonic");
532
533#include "sonic.c"
534
535static void mac_sonic_platform_remove(struct platform_device *pdev)
536{
537 struct net_device *dev = platform_get_drvdata(pdev);
538 struct sonic_local* lp = netdev_priv(dev);
539
540 unregister_netdev(dev);
541 dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
542 lp->descriptors, lp->descriptors_laddr);
543 free_netdev(dev);
544}
545
546static struct platform_driver mac_sonic_platform_driver = {
547 .probe = mac_sonic_platform_probe,
548 .remove = mac_sonic_platform_remove,
549 .driver = {
550 .name = "macsonic",
551 },
552};
553
554static int mac_sonic_nubus_probe(struct nubus_board *board)
555{
556 struct net_device *ndev;
557 struct sonic_local *lp;
558 struct nubus_rsrc *fres;
559 int id = -1;
560 int err;
561
562 /* The platform driver will handle a PDS or Comm Slot card (even if
563 * it has a pseudoslot declaration ROM).
564 */
565 if (macintosh_config->expansion_type == MAC_EXP_PDS_COMM)
566 return -ENODEV;
567
568 for_each_board_func_rsrc(board, fres) {
569 if (fres->category != NUBUS_CAT_NETWORK ||
570 fres->type != NUBUS_TYPE_ETHERNET)
571 continue;
572
573 id = macsonic_ident(fres);
574 if (id != -1)
575 break;
576 }
577 if (!fres)
578 return -ENODEV;
579
580 ndev = alloc_etherdev(sizeof(struct sonic_local));
581 if (!ndev)
582 return -ENOMEM;
583
584 lp = netdev_priv(ndev);
585 lp->device = &board->dev;
586 SET_NETDEV_DEV(ndev, &board->dev);
587
588 err = mac_sonic_nubus_probe_board(board, id, ndev);
589 if (err)
590 goto out;
591
592 sonic_msg_init(ndev);
593
594 err = register_netdev(ndev);
595 if (err)
596 goto undo_probe;
597
598 nubus_set_drvdata(board, ndev);
599
600 return 0;
601
602undo_probe:
603 dma_free_coherent(lp->device,
604 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
605 lp->descriptors, lp->descriptors_laddr);
606out:
607 free_netdev(ndev);
608 return err;
609}
610
611static void mac_sonic_nubus_remove(struct nubus_board *board)
612{
613 struct net_device *ndev = nubus_get_drvdata(board);
614 struct sonic_local *lp = netdev_priv(ndev);
615
616 unregister_netdev(ndev);
617 dma_free_coherent(lp->device,
618 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
619 lp->descriptors, lp->descriptors_laddr);
620 free_netdev(ndev);
621}
622
623static struct nubus_driver mac_sonic_nubus_driver = {
624 .probe = mac_sonic_nubus_probe,
625 .remove = mac_sonic_nubus_remove,
626 .driver = {
627 .name = "macsonic-nubus",
628 .owner = THIS_MODULE,
629 },
630};
631
632static int perr, nerr;
633
634static int __init mac_sonic_init(void)
635{
636 perr = platform_driver_register(&mac_sonic_platform_driver);
637 nerr = nubus_driver_register(&mac_sonic_nubus_driver);
638 return 0;
639}
640module_init(mac_sonic_init);
641
642static void __exit mac_sonic_exit(void)
643{
644 if (!perr)
645 platform_driver_unregister(&mac_sonic_platform_driver);
646 if (!nerr)
647 nubus_driver_unregister(&mac_sonic_nubus_driver);
648}
649module_exit(mac_sonic_exit);
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
62static 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
76static unsigned int sonic_debug = SONIC_DEBUG;
77#else
78static unsigned int sonic_debug = 1;
79#endif
80
81static int sonic_version_printed;
82
83/* For onboard SONIC */
84#define ONBOARD_SONIC_REGISTERS 0x50F0A000
85#define ONBOARD_SONIC_PROM_BASE 0x50f08000
86
87enum 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
119static 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
127static 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
138static 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
166err_irq_nubus:
167 if (dev->irq == IRQ_AUTO_3)
168 free_irq(IRQ_NUBUS_9, dev);
169err_irq:
170 free_irq(dev->irq, dev);
171err:
172 return retval;
173}
174
175static 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
185static 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
197static 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
246static 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
310static 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 unsigned long flags;
330 int card_present;
331
332 local_irq_save(flags);
333 card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
334 local_irq_restore(flags);
335
336 if (!card_present) {
337 printk("none.\n");
338 return -ENODEV;
339 }
340 commslot = 1;
341 }
342
343 printk("yes\n");
344
345 /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
346 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
347 dev->base_addr = ONBOARD_SONIC_REGISTERS;
348 if (via_alt_mapping)
349 dev->irq = IRQ_AUTO_3;
350 else
351 dev->irq = IRQ_NUBUS_9;
352
353 if (!sonic_version_printed) {
354 printk(KERN_INFO "%s", version);
355 sonic_version_printed = 1;
356 }
357 printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
358 dev_name(lp->device), dev->base_addr);
359
360 /* The PowerBook's SONIC is 16 bit always. */
361 if (macintosh_config->ident == MAC_MODEL_PB520) {
362 lp->reg_offset = 0;
363 lp->dma_bitmode = SONIC_BITMODE16;
364 sr = SONIC_READ(SONIC_SR);
365 } else if (commslot) {
366 /* Some of the comm-slot cards are 16 bit. But some
367 of them are not. The 32-bit cards use offset 2 and
368 have known revisions, we try reading the revision
369 register at offset 2, if we don't get a known revision
370 we assume 16 bit at offset 0. */
371 lp->reg_offset = 2;
372 lp->dma_bitmode = SONIC_BITMODE16;
373
374 sr = SONIC_READ(SONIC_SR);
375 if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
376 /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
377 lp->dma_bitmode = SONIC_BITMODE32;
378 else {
379 lp->dma_bitmode = SONIC_BITMODE16;
380 lp->reg_offset = 0;
381 sr = SONIC_READ(SONIC_SR);
382 }
383 } else {
384 /* All onboard cards are at offset 2 with 32 bit DMA. */
385 lp->reg_offset = 2;
386 lp->dma_bitmode = SONIC_BITMODE32;
387 sr = SONIC_READ(SONIC_SR);
388 }
389 printk(KERN_INFO
390 "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
391 dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);
392
393#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
394 printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
395 SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
396#endif
397
398 /* Software reset, then initialize control registers. */
399 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
400
401 SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
402 SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
403 (lp->dma_bitmode ? SONIC_DCR_DW : 0));
404
405 /* This *must* be written back to in order to restore the
406 * extended programmable output bits, as it may not have been
407 * initialised since the hardware reset. */
408 SONIC_WRITE(SONIC_DCR2, 0);
409
410 /* Clear *and* disable interrupts to be on the safe side */
411 SONIC_WRITE(SONIC_IMR, 0);
412 SONIC_WRITE(SONIC_ISR, 0x7fff);
413
414 /* Now look for the MAC address. */
415 mac_onboard_sonic_ethernet_addr(dev);
416
417 /* Shared init code */
418 return macsonic_init(dev);
419}
420
421static int mac_nubus_sonic_ethernet_addr(struct net_device *dev,
422 unsigned long prom_addr, int id)
423{
424 int i;
425 for(i = 0; i < 6; i++)
426 dev->dev_addr[i] = SONIC_READ_PROM(i);
427
428 /* Some of the addresses are bit-reversed */
429 if (id != MACSONIC_DAYNA)
430 bit_reverse_addr(dev->dev_addr);
431
432 return 0;
433}
434
435static int macsonic_ident(struct nubus_dev *ndev)
436{
437 if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
438 ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
439 return MACSONIC_DAYNALINK;
440 if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
441 ndev->dr_sw == NUBUS_DRSW_APPLE) {
442 /* There has to be a better way to do this... */
443 if (strstr(ndev->board->name, "DuoDock"))
444 return MACSONIC_DUODOCK;
445 else
446 return MACSONIC_APPLE;
447 }
448
449 if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
450 ndev->dr_sw == NUBUS_DRSW_DAYNA)
451 return MACSONIC_DAYNA;
452
453 if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
454 ndev->dr_sw == 0) { /* huh? */
455 return MACSONIC_APPLE16;
456 }
457 return -1;
458}
459
460static int mac_nubus_sonic_probe(struct net_device *dev)
461{
462 static int slots;
463 struct nubus_dev* ndev = NULL;
464 struct sonic_local* lp = netdev_priv(dev);
465 unsigned long base_addr, prom_addr;
466 u16 sonic_dcr;
467 int id = -1;
468 int reg_offset, dma_bitmode;
469
470 /* Find the first SONIC that hasn't been initialized already */
471 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
472 NUBUS_TYPE_ETHERNET, ndev)) != NULL)
473 {
474 /* Have we seen it already? */
475 if (slots & (1<<ndev->board->slot))
476 continue;
477 slots |= 1<<ndev->board->slot;
478
479 /* Is it one of ours? */
480 if ((id = macsonic_ident(ndev)) != -1)
481 break;
482 }
483
484 if (ndev == NULL)
485 return -ENODEV;
486
487 switch (id) {
488 case MACSONIC_DUODOCK:
489 base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
490 prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
491 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
492 SONIC_DCR_TFT0;
493 reg_offset = 2;
494 dma_bitmode = SONIC_BITMODE32;
495 break;
496 case MACSONIC_APPLE:
497 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
498 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
499 sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
500 reg_offset = 0;
501 dma_bitmode = SONIC_BITMODE32;
502 break;
503 case MACSONIC_APPLE16:
504 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
505 prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
506 sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
507 SONIC_DCR_PO1 | SONIC_DCR_BMS;
508 reg_offset = 0;
509 dma_bitmode = SONIC_BITMODE16;
510 break;
511 case MACSONIC_DAYNALINK:
512 base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
513 prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
514 sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
515 SONIC_DCR_PO1 | SONIC_DCR_BMS;
516 reg_offset = 0;
517 dma_bitmode = SONIC_BITMODE16;
518 break;
519 case MACSONIC_DAYNA:
520 base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
521 prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
522 sonic_dcr = SONIC_DCR_BMS |
523 SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
524 reg_offset = 0;
525 dma_bitmode = SONIC_BITMODE16;
526 break;
527 default:
528 printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
529 return -ENODEV;
530 }
531
532 /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
533 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
534 dev->base_addr = base_addr;
535 lp->reg_offset = reg_offset;
536 lp->dma_bitmode = dma_bitmode;
537 dev->irq = SLOT2IRQ(ndev->board->slot);
538
539 if (!sonic_version_printed) {
540 printk(KERN_INFO "%s", version);
541 sonic_version_printed = 1;
542 }
543 printk(KERN_INFO "%s: %s in slot %X\n",
544 dev_name(lp->device), ndev->board->name, ndev->board->slot);
545 printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
546 dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);
547
548#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
549 printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
550 SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
551#endif
552
553 /* Software reset, then initialize control registers. */
554 SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
555 SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
556 /* This *must* be written back to in order to restore the
557 * extended programmable output bits, since it may not have been
558 * initialised since the hardware reset. */
559 SONIC_WRITE(SONIC_DCR2, 0);
560
561 /* Clear *and* disable interrupts to be on the safe side */
562 SONIC_WRITE(SONIC_IMR, 0);
563 SONIC_WRITE(SONIC_ISR, 0x7fff);
564
565 /* Now look for the MAC address. */
566 if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
567 return -ENODEV;
568
569 /* Shared init code */
570 return macsonic_init(dev);
571}
572
573static int mac_sonic_probe(struct platform_device *pdev)
574{
575 struct net_device *dev;
576 struct sonic_local *lp;
577 int err;
578
579 dev = alloc_etherdev(sizeof(struct sonic_local));
580 if (!dev)
581 return -ENOMEM;
582
583 lp = netdev_priv(dev);
584 lp->device = &pdev->dev;
585 SET_NETDEV_DEV(dev, &pdev->dev);
586 platform_set_drvdata(pdev, dev);
587
588 /* This will catch fatal stuff like -ENOMEM as well as success */
589 err = mac_onboard_sonic_probe(dev);
590 if (err == 0)
591 goto found;
592 if (err != -ENODEV)
593 goto out;
594 err = mac_nubus_sonic_probe(dev);
595 if (err)
596 goto out;
597found:
598 err = register_netdev(dev);
599 if (err)
600 goto out;
601
602 printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
603
604 return 0;
605
606out:
607 free_netdev(dev);
608
609 return err;
610}
611
612MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
613module_param(sonic_debug, int, 0);
614MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
615MODULE_ALIAS("platform:macsonic");
616
617#include "sonic.c"
618
619static int mac_sonic_device_remove(struct platform_device *pdev)
620{
621 struct net_device *dev = platform_get_drvdata(pdev);
622 struct sonic_local* lp = netdev_priv(dev);
623
624 unregister_netdev(dev);
625 dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
626 lp->descriptors, lp->descriptors_laddr);
627 free_netdev(dev);
628
629 return 0;
630}
631
632static struct platform_driver mac_sonic_driver = {
633 .probe = mac_sonic_probe,
634 .remove = mac_sonic_device_remove,
635 .driver = {
636 .name = mac_sonic_string,
637 .owner = THIS_MODULE,
638 },
639};
640
641module_platform_driver(mac_sonic_driver);