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
77 enum 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
bit_reverse_addr(unsigned char addr[6])109 static 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
macsonic_open(struct net_device * dev)117 static 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
145 err_irq_nubus:
146 if (dev->irq == IRQ_AUTO_3)
147 free_irq(IRQ_NUBUS_9, dev);
148 err_irq:
149 free_irq(dev->irq, dev);
150 err:
151 return retval;
152 }
153
macsonic_close(struct net_device * dev)154 static 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
164 static 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
macsonic_init(struct net_device * dev)175 static 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
mac_onboard_sonic_ethernet_addr(struct net_device * dev)201 static 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
mac_onboard_sonic_probe(struct net_device * dev)269 static 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
mac_sonic_nubus_ethernet_addr(struct net_device * dev,unsigned long prom_addr,int id)359 static 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
macsonic_ident(struct nubus_rsrc * fres)376 static 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
mac_sonic_nubus_probe_board(struct nubus_board * board,int id,struct net_device * dev)401 static 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
mac_sonic_platform_probe(struct platform_device * pdev)493 static 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
520 undo_probe:
521 dma_free_coherent(lp->device,
522 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
523 lp->descriptors, lp->descriptors_laddr);
524 out:
525 free_netdev(dev);
526
527 return err;
528 }
529
530 MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
531 MODULE_ALIAS("platform:macsonic");
532
533 #include "sonic.c"
534
mac_sonic_platform_remove(struct platform_device * pdev)535 static int 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 return 0;
546 }
547
548 static struct platform_driver mac_sonic_platform_driver = {
549 .probe = mac_sonic_platform_probe,
550 .remove = mac_sonic_platform_remove,
551 .driver = {
552 .name = "macsonic",
553 },
554 };
555
mac_sonic_nubus_probe(struct nubus_board * board)556 static int mac_sonic_nubus_probe(struct nubus_board *board)
557 {
558 struct net_device *ndev;
559 struct sonic_local *lp;
560 struct nubus_rsrc *fres;
561 int id = -1;
562 int err;
563
564 /* The platform driver will handle a PDS or Comm Slot card (even if
565 * it has a pseudoslot declaration ROM).
566 */
567 if (macintosh_config->expansion_type == MAC_EXP_PDS_COMM)
568 return -ENODEV;
569
570 for_each_board_func_rsrc(board, fres) {
571 if (fres->category != NUBUS_CAT_NETWORK ||
572 fres->type != NUBUS_TYPE_ETHERNET)
573 continue;
574
575 id = macsonic_ident(fres);
576 if (id != -1)
577 break;
578 }
579 if (!fres)
580 return -ENODEV;
581
582 ndev = alloc_etherdev(sizeof(struct sonic_local));
583 if (!ndev)
584 return -ENOMEM;
585
586 lp = netdev_priv(ndev);
587 lp->device = &board->dev;
588 SET_NETDEV_DEV(ndev, &board->dev);
589
590 err = mac_sonic_nubus_probe_board(board, id, ndev);
591 if (err)
592 goto out;
593
594 sonic_msg_init(ndev);
595
596 err = register_netdev(ndev);
597 if (err)
598 goto undo_probe;
599
600 nubus_set_drvdata(board, ndev);
601
602 return 0;
603
604 undo_probe:
605 dma_free_coherent(lp->device,
606 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
607 lp->descriptors, lp->descriptors_laddr);
608 out:
609 free_netdev(ndev);
610 return err;
611 }
612
mac_sonic_nubus_remove(struct nubus_board * board)613 static void mac_sonic_nubus_remove(struct nubus_board *board)
614 {
615 struct net_device *ndev = nubus_get_drvdata(board);
616 struct sonic_local *lp = netdev_priv(ndev);
617
618 unregister_netdev(ndev);
619 dma_free_coherent(lp->device,
620 SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
621 lp->descriptors, lp->descriptors_laddr);
622 free_netdev(ndev);
623 }
624
625 static struct nubus_driver mac_sonic_nubus_driver = {
626 .probe = mac_sonic_nubus_probe,
627 .remove = mac_sonic_nubus_remove,
628 .driver = {
629 .name = "macsonic-nubus",
630 .owner = THIS_MODULE,
631 },
632 };
633
634 static int perr, nerr;
635
mac_sonic_init(void)636 static int __init mac_sonic_init(void)
637 {
638 perr = platform_driver_register(&mac_sonic_platform_driver);
639 nerr = nubus_driver_register(&mac_sonic_nubus_driver);
640 return 0;
641 }
642 module_init(mac_sonic_init);
643
mac_sonic_exit(void)644 static void __exit mac_sonic_exit(void)
645 {
646 if (!perr)
647 platform_driver_unregister(&mac_sonic_platform_driver);
648 if (!nerr)
649 nubus_driver_unregister(&mac_sonic_nubus_driver);
650 }
651 module_exit(mac_sonic_exit);
652