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20#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
22#include <linux/module.h>
23#include <linux/kernel.h>
24#include <linux/types.h>
25#include <linux/fcntl.h>
26#include <linux/interrupt.h>
27#include <linux/ptrace.h>
28#include <linux/ioport.h>
29#include <linux/nubus.h>
30#include <linux/in.h>
31#include <linux/string.h>
32#include <linux/errno.h>
33#include <linux/init.h>
34#include <linux/netdevice.h>
35#include <linux/etherdevice.h>
36#include <linux/skbuff.h>
37#include <linux/bitops.h>
38#include <linux/io.h>
39
40#include <asm/dma.h>
41#include <asm/hwtest.h>
42#include <asm/macints.h>
43
44static char version[] =
45 "v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
46
47#define EI_SHIFT(x) (ei_local->reg_offset[x])
48#define ei_inb(port) in_8(port)
49#define ei_outb(val, port) out_8(port, val)
50#define ei_inb_p(port) in_8(port)
51#define ei_outb_p(val, port) out_8(port, val)
52
53#include "lib8390.c"
54
55#define WD_START_PG 0x00
56#define CABLETRON_RX_START_PG 0x00
57#define CABLETRON_RX_STOP_PG 0x30
58#define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG
59
60
61
62
63
64
65
66
67
68#define DAYNA_8390_BASE 0x80000
69#define DAYNA_8390_MEM 0x00000
70
71#define CABLETRON_8390_BASE 0x90000
72#define CABLETRON_8390_MEM 0x00000
73
74#define INTERLAN_8390_BASE 0xE0000
75#define INTERLAN_8390_MEM 0xD0000
76
77enum mac8390_type {
78 MAC8390_NONE = -1,
79 MAC8390_APPLE,
80 MAC8390_ASANTE,
81 MAC8390_FARALLON,
82 MAC8390_CABLETRON,
83 MAC8390_DAYNA,
84 MAC8390_INTERLAN,
85 MAC8390_KINETICS,
86};
87
88static const char *cardname[] = {
89 "apple",
90 "asante",
91 "farallon",
92 "cabletron",
93 "dayna",
94 "interlan",
95 "kinetics",
96};
97
98static const int word16[] = {
99 1,
100 1,
101 1,
102 1,
103 0,
104 1,
105 0,
106};
107
108
109static const int useresources[] = {
110 1,
111 1,
112 1,
113 0,
114 0,
115 0,
116 0,
117};
118
119enum mac8390_access {
120 ACCESS_UNKNOWN = 0,
121 ACCESS_32,
122 ACCESS_16,
123};
124
125extern int mac8390_memtest(struct net_device *dev);
126static int mac8390_initdev(struct net_device *dev, struct nubus_board *board,
127 enum mac8390_type type);
128
129static int mac8390_open(struct net_device *dev);
130static int mac8390_close(struct net_device *dev);
131static void mac8390_no_reset(struct net_device *dev);
132static void interlan_reset(struct net_device *dev);
133
134
135static void sane_get_8390_hdr(struct net_device *dev,
136 struct e8390_pkt_hdr *hdr, int ring_page);
137static void sane_block_input(struct net_device *dev, int count,
138 struct sk_buff *skb, int ring_offset);
139static void sane_block_output(struct net_device *dev, int count,
140 const unsigned char *buf, const int start_page);
141
142
143static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
144 int from, int count);
145static void dayna_memcpy_tocard(struct net_device *dev, int to,
146 const void *from, int count);
147
148
149static void dayna_get_8390_hdr(struct net_device *dev,
150 struct e8390_pkt_hdr *hdr, int ring_page);
151static void dayna_block_input(struct net_device *dev, int count,
152 struct sk_buff *skb, int ring_offset);
153static void dayna_block_output(struct net_device *dev, int count,
154 const unsigned char *buf, int start_page);
155
156
157static void slow_sane_get_8390_hdr(struct net_device *dev,
158 struct e8390_pkt_hdr *hdr, int ring_page);
159static void slow_sane_block_input(struct net_device *dev, int count,
160 struct sk_buff *skb, int ring_offset);
161static void slow_sane_block_output(struct net_device *dev, int count,
162 const unsigned char *buf, int start_page);
163static void word_memcpy_tocard(unsigned long tp, const void *fp, int count);
164static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
165
166static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres)
167{
168 switch (fres->dr_sw) {
169 case NUBUS_DRSW_3COM:
170 switch (fres->dr_hw) {
171 case NUBUS_DRHW_APPLE_SONIC_NB:
172 case NUBUS_DRHW_APPLE_SONIC_LC:
173 case NUBUS_DRHW_SONNET:
174 return MAC8390_NONE;
175 default:
176 return MAC8390_APPLE;
177 }
178
179 case NUBUS_DRSW_APPLE:
180 switch (fres->dr_hw) {
181 case NUBUS_DRHW_ASANTE_LC:
182 return MAC8390_NONE;
183 case NUBUS_DRHW_CABLETRON:
184 return MAC8390_CABLETRON;
185 default:
186 return MAC8390_APPLE;
187 }
188
189 case NUBUS_DRSW_ASANTE:
190 return MAC8390_ASANTE;
191
192 case NUBUS_DRSW_TECHWORKS:
193 case NUBUS_DRSW_DAYNA2:
194 case NUBUS_DRSW_DAYNA_LC:
195 if (fres->dr_hw == NUBUS_DRHW_CABLETRON)
196 return MAC8390_CABLETRON;
197 else
198 return MAC8390_APPLE;
199
200 case NUBUS_DRSW_FARALLON:
201 return MAC8390_FARALLON;
202
203 case NUBUS_DRSW_KINETICS:
204 switch (fres->dr_hw) {
205 case NUBUS_DRHW_INTERLAN:
206 return MAC8390_INTERLAN;
207 default:
208 return MAC8390_KINETICS;
209 }
210
211 case NUBUS_DRSW_DAYNA:
212
213
214
215
216 if (fres->dr_hw == NUBUS_DRHW_SMC9194 ||
217 fres->dr_hw == NUBUS_DRHW_INTERLAN)
218 return MAC8390_NONE;
219 else
220 return MAC8390_DAYNA;
221 }
222 return MAC8390_NONE;
223}
224
225static enum mac8390_access mac8390_testio(unsigned long membase)
226{
227 u32 outdata = 0xA5A0B5B0;
228 u32 indata = 0;
229
230
231 nubus_writel(outdata, membase);
232
233 indata = nubus_readl(membase);
234 if (outdata == indata)
235 return ACCESS_32;
236
237 outdata = 0xC5C0D5D0;
238 indata = 0;
239
240
241 word_memcpy_tocard(membase, &outdata, 4);
242
243 word_memcpy_fromcard(&indata, membase, 4);
244 if (outdata == indata)
245 return ACCESS_16;
246
247 return ACCESS_UNKNOWN;
248}
249
250static int mac8390_memsize(unsigned long membase)
251{
252 unsigned long flags;
253 int i, j;
254
255 local_irq_save(flags);
256
257 for (i = 0; i < 8; i++) {
258 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
259
260
261
262 if (hwreg_present(m) == 0)
263 break;
264
265
266 *m = 0xA5A0 | i;
267
268 if (*m != (0xA5A0 | i))
269 break;
270
271
272 for (j = 0; j < i; j++) {
273 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
274 if (*p != (0xA5A0 | j))
275 break;
276 }
277 }
278 local_irq_restore(flags);
279
280
281
282
283 return i * 0x1000;
284}
285
286static bool mac8390_rsrc_init(struct net_device *dev,
287 struct nubus_rsrc *fres,
288 enum mac8390_type cardtype)
289{
290 struct nubus_board *board = fres->board;
291 struct nubus_dir dir;
292 struct nubus_dirent ent;
293 int offset;
294 volatile unsigned short *i;
295
296 dev->irq = SLOT2IRQ(board->slot);
297
298 dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20);
299
300
301
302
303
304
305 if (nubus_get_func_dir(fres, &dir) == -1) {
306 dev_err(&board->dev,
307 "Unable to get Nubus functional directory\n");
308 return false;
309 }
310
311
312 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
313 dev_info(&board->dev, "MAC address resource not found\n");
314 return false;
315 }
316
317 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
318
319 if (useresources[cardtype] == 1) {
320 nubus_rewinddir(&dir);
321 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
322 &ent) == -1) {
323 dev_err(&board->dev,
324 "Memory offset resource not found\n");
325 return false;
326 }
327 nubus_get_rsrc_mem(&offset, &ent, 4);
328 dev->mem_start = dev->base_addr + offset;
329
330 dev->base_addr = dev->mem_start + 0x10000;
331 nubus_rewinddir(&dir);
332 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH,
333 &ent) == -1) {
334 dev_info(&board->dev,
335 "Memory length resource not found, probing\n");
336 offset = mac8390_memsize(dev->mem_start);
337 } else {
338 nubus_get_rsrc_mem(&offset, &ent, 4);
339 }
340 dev->mem_end = dev->mem_start + offset;
341 } else {
342 switch (cardtype) {
343 case MAC8390_KINETICS:
344 case MAC8390_DAYNA:
345 dev->base_addr = (int)(board->slot_addr +
346 DAYNA_8390_BASE);
347 dev->mem_start = (int)(board->slot_addr +
348 DAYNA_8390_MEM);
349 dev->mem_end = dev->mem_start +
350 mac8390_memsize(dev->mem_start);
351 break;
352 case MAC8390_INTERLAN:
353 dev->base_addr = (int)(board->slot_addr +
354 INTERLAN_8390_BASE);
355 dev->mem_start = (int)(board->slot_addr +
356 INTERLAN_8390_MEM);
357 dev->mem_end = dev->mem_start +
358 mac8390_memsize(dev->mem_start);
359 break;
360 case MAC8390_CABLETRON:
361 dev->base_addr = (int)(board->slot_addr +
362 CABLETRON_8390_BASE);
363 dev->mem_start = (int)(board->slot_addr +
364 CABLETRON_8390_MEM);
365
366
367
368
369
370
371 i = (void *)dev->base_addr;
372 *i = 0x21;
373 dev->mem_end = dev->mem_start +
374 mac8390_memsize(dev->mem_start);
375 break;
376
377 default:
378 dev_err(&board->dev,
379 "No known base address for card type\n");
380 return false;
381 }
382 }
383
384 return true;
385}
386
387static int mac8390_device_probe(struct nubus_board *board)
388{
389 struct net_device *dev;
390 int err = -ENODEV;
391 struct nubus_rsrc *fres;
392 enum mac8390_type cardtype = MAC8390_NONE;
393
394 dev = ____alloc_ei_netdev(0);
395 if (!dev)
396 return -ENOMEM;
397
398 SET_NETDEV_DEV(dev, &board->dev);
399
400 for_each_board_func_rsrc(board, fres) {
401 if (fres->category != NUBUS_CAT_NETWORK ||
402 fres->type != NUBUS_TYPE_ETHERNET)
403 continue;
404
405 cardtype = mac8390_ident(fres);
406 if (cardtype == MAC8390_NONE)
407 continue;
408
409 if (mac8390_rsrc_init(dev, fres, cardtype))
410 break;
411 }
412 if (!fres)
413 goto out;
414
415 err = mac8390_initdev(dev, board, cardtype);
416 if (err)
417 goto out;
418
419 err = register_netdev(dev);
420 if (err)
421 goto out;
422
423 nubus_set_drvdata(board, dev);
424 return 0;
425
426out:
427 free_netdev(dev);
428 return err;
429}
430
431static void mac8390_device_remove(struct nubus_board *board)
432{
433 struct net_device *dev = nubus_get_drvdata(board);
434
435 unregister_netdev(dev);
436 free_netdev(dev);
437}
438
439static struct nubus_driver mac8390_driver = {
440 .probe = mac8390_device_probe,
441 .remove = mac8390_device_remove,
442 .driver = {
443 .name = KBUILD_MODNAME,
444 .owner = THIS_MODULE,
445 }
446};
447
448MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
449MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
450MODULE_LICENSE("GPL");
451
452static int __init mac8390_init(void)
453{
454 return nubus_driver_register(&mac8390_driver);
455}
456module_init(mac8390_init);
457
458static void __exit mac8390_exit(void)
459{
460 nubus_driver_unregister(&mac8390_driver);
461}
462module_exit(mac8390_exit);
463
464static const struct net_device_ops mac8390_netdev_ops = {
465 .ndo_open = mac8390_open,
466 .ndo_stop = mac8390_close,
467 .ndo_start_xmit = __ei_start_xmit,
468 .ndo_tx_timeout = __ei_tx_timeout,
469 .ndo_get_stats = __ei_get_stats,
470 .ndo_set_rx_mode = __ei_set_multicast_list,
471 .ndo_validate_addr = eth_validate_addr,
472 .ndo_set_mac_address = eth_mac_addr,
473#ifdef CONFIG_NET_POLL_CONTROLLER
474 .ndo_poll_controller = __ei_poll,
475#endif
476};
477
478static int mac8390_initdev(struct net_device *dev, struct nubus_board *board,
479 enum mac8390_type type)
480{
481 static u32 fwrd4_offsets[16] = {
482 0, 4, 8, 12,
483 16, 20, 24, 28,
484 32, 36, 40, 44,
485 48, 52, 56, 60
486 };
487 static u32 back4_offsets[16] = {
488 60, 56, 52, 48,
489 44, 40, 36, 32,
490 28, 24, 20, 16,
491 12, 8, 4, 0
492 };
493 static u32 fwrd2_offsets[16] = {
494 0, 2, 4, 6,
495 8, 10, 12, 14,
496 16, 18, 20, 22,
497 24, 26, 28, 30
498 };
499
500 int access_bitmode = 0;
501
502
503 dev->netdev_ops = &mac8390_netdev_ops;
504
505
506 ei_status.name = cardname[type];
507 ei_status.word16 = word16[type];
508
509
510 if (type == MAC8390_CABLETRON) {
511 ei_status.tx_start_page = CABLETRON_TX_START_PG;
512 ei_status.rx_start_page = CABLETRON_RX_START_PG;
513 ei_status.stop_page = CABLETRON_RX_STOP_PG;
514 ei_status.rmem_start = dev->mem_start;
515 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
516 } else {
517 ei_status.tx_start_page = WD_START_PG;
518 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
519 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
520 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
521 ei_status.rmem_end = dev->mem_end;
522 }
523
524
525 switch (type) {
526 case MAC8390_FARALLON:
527 case MAC8390_APPLE:
528 switch (mac8390_testio(dev->mem_start)) {
529 case ACCESS_UNKNOWN:
530 dev_err(&board->dev,
531 "Don't know how to access card memory\n");
532 return -ENODEV;
533
534 case ACCESS_16:
535
536 ei_status.reset_8390 = mac8390_no_reset;
537 ei_status.block_input = slow_sane_block_input;
538 ei_status.block_output = slow_sane_block_output;
539 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
540 ei_status.reg_offset = back4_offsets;
541 break;
542
543 case ACCESS_32:
544
545 ei_status.reset_8390 = mac8390_no_reset;
546 ei_status.block_input = sane_block_input;
547 ei_status.block_output = sane_block_output;
548 ei_status.get_8390_hdr = sane_get_8390_hdr;
549 ei_status.reg_offset = back4_offsets;
550 access_bitmode = 1;
551 break;
552 }
553 break;
554
555 case MAC8390_ASANTE:
556
557
558
559
560 ei_status.reset_8390 = mac8390_no_reset;
561 ei_status.block_input = slow_sane_block_input;
562 ei_status.block_output = slow_sane_block_output;
563 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
564 ei_status.reg_offset = back4_offsets;
565 break;
566
567 case MAC8390_CABLETRON:
568
569 ei_status.reset_8390 = mac8390_no_reset;
570 ei_status.block_input = slow_sane_block_input;
571 ei_status.block_output = slow_sane_block_output;
572 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
573 ei_status.reg_offset = fwrd2_offsets;
574 break;
575
576 case MAC8390_DAYNA:
577 case MAC8390_KINETICS:
578
579
580 ei_status.reset_8390 = mac8390_no_reset;
581 ei_status.block_input = dayna_block_input;
582 ei_status.block_output = dayna_block_output;
583 ei_status.get_8390_hdr = dayna_get_8390_hdr;
584 ei_status.reg_offset = fwrd4_offsets;
585 break;
586
587 case MAC8390_INTERLAN:
588
589 ei_status.reset_8390 = interlan_reset;
590 ei_status.block_input = slow_sane_block_input;
591 ei_status.block_output = slow_sane_block_output;
592 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
593 ei_status.reg_offset = fwrd4_offsets;
594 break;
595
596 default:
597 dev_err(&board->dev, "Unsupported card type\n");
598 return -ENODEV;
599 }
600
601 __NS8390_init(dev, 0);
602
603
604 dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]);
605 dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
606 dev->dev_addr, dev->irq,
607 (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
608 dev->mem_start, access_bitmode ? 32 : 16);
609 return 0;
610}
611
612static int mac8390_open(struct net_device *dev)
613{
614 int err;
615
616 __ei_open(dev);
617 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev);
618 if (err)
619 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq);
620 return err;
621}
622
623static int mac8390_close(struct net_device *dev)
624{
625 free_irq(dev->irq, dev);
626 __ei_close(dev);
627 return 0;
628}
629
630static void mac8390_no_reset(struct net_device *dev)
631{
632 struct ei_device *ei_local = netdev_priv(dev);
633
634 ei_status.txing = 0;
635 netif_info(ei_local, hw, dev, "reset not supported\n");
636}
637
638static void interlan_reset(struct net_device *dev)
639{
640 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
641 struct ei_device *ei_local = netdev_priv(dev);
642
643 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...",
644 jiffies);
645 ei_status.txing = 0;
646 target[0xC0000] = 0;
647 if (netif_msg_hw(ei_local))
648 pr_cont("reset complete\n");
649}
650
651
652
653static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
654 int count)
655{
656 volatile unsigned char *ptr;
657 unsigned char *target = to;
658 from <<= 1;
659 ptr = (unsigned char *)(dev->mem_start+from);
660
661 if (from & 2) {
662 *target++ = ptr[-1];
663 ptr += 2;
664 count--;
665 }
666 while (count >= 2) {
667 *(unsigned short *)target = *(unsigned short volatile *)ptr;
668 ptr += 4;
669 target += 2;
670 count -= 2;
671 }
672
673 if (count)
674 *target = *ptr;
675}
676
677static void dayna_memcpy_tocard(struct net_device *dev, int to,
678 const void *from, int count)
679{
680 volatile unsigned short *ptr;
681 const unsigned char *src = from;
682 to <<= 1;
683 ptr = (unsigned short *)(dev->mem_start+to);
684
685 if (to & 2) {
686 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
687 ptr++;
688 count--;
689 }
690 while (count >= 2) {
691 *ptr++ = *(unsigned short *)src;
692 ptr++;
693 src += 2;
694 count -= 2;
695 }
696
697 if (count) {
698
699 *ptr = (*ptr & 0x00FF) | (*src << 8);
700 }
701}
702
703
704static void sane_get_8390_hdr(struct net_device *dev,
705 struct e8390_pkt_hdr *hdr, int ring_page)
706{
707 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
708 memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4);
709
710 hdr->count = swab16(hdr->count);
711}
712
713static void sane_block_input(struct net_device *dev, int count,
714 struct sk_buff *skb, int ring_offset)
715{
716 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
717 unsigned long xfer_start = xfer_base + dev->mem_start;
718
719 if (xfer_start + count > ei_status.rmem_end) {
720
721 int semi_count = ei_status.rmem_end - xfer_start;
722 memcpy_fromio(skb->data,
723 (void __iomem *)dev->mem_start + xfer_base,
724 semi_count);
725 count -= semi_count;
726 memcpy_fromio(skb->data + semi_count,
727 (void __iomem *)ei_status.rmem_start, count);
728 } else {
729 memcpy_fromio(skb->data,
730 (void __iomem *)dev->mem_start + xfer_base,
731 count);
732 }
733}
734
735static void sane_block_output(struct net_device *dev, int count,
736 const unsigned char *buf, int start_page)
737{
738 long shmem = (start_page - WD_START_PG)<<8;
739
740 memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count);
741}
742
743
744static void dayna_get_8390_hdr(struct net_device *dev,
745 struct e8390_pkt_hdr *hdr, int ring_page)
746{
747 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
748
749 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
750
751 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
752}
753
754static void dayna_block_input(struct net_device *dev, int count,
755 struct sk_buff *skb, int ring_offset)
756{
757 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
758 unsigned long xfer_start = xfer_base+dev->mem_start;
759
760
761
762
763 if (xfer_start + count > ei_status.rmem_end) {
764
765 int semi_count = ei_status.rmem_end - xfer_start;
766 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
767 count -= semi_count;
768 dayna_memcpy_fromcard(dev, skb->data + semi_count,
769 ei_status.rmem_start - dev->mem_start,
770 count);
771 } else {
772 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
773 }
774}
775
776static void dayna_block_output(struct net_device *dev, int count,
777 const unsigned char *buf,
778 int start_page)
779{
780 long shmem = (start_page - WD_START_PG)<<8;
781
782 dayna_memcpy_tocard(dev, shmem, buf, count);
783}
784
785
786static void slow_sane_get_8390_hdr(struct net_device *dev,
787 struct e8390_pkt_hdr *hdr,
788 int ring_page)
789{
790 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
791 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4);
792
793 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
794}
795
796static void slow_sane_block_input(struct net_device *dev, int count,
797 struct sk_buff *skb, int ring_offset)
798{
799 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
800 unsigned long xfer_start = xfer_base+dev->mem_start;
801
802 if (xfer_start + count > ei_status.rmem_end) {
803
804 int semi_count = ei_status.rmem_end - xfer_start;
805 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
806 semi_count);
807 count -= semi_count;
808 word_memcpy_fromcard(skb->data + semi_count,
809 ei_status.rmem_start, count);
810 } else {
811 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
812 count);
813 }
814}
815
816static void slow_sane_block_output(struct net_device *dev, int count,
817 const unsigned char *buf, int start_page)
818{
819 long shmem = (start_page - WD_START_PG)<<8;
820
821 word_memcpy_tocard(dev->mem_start + shmem, buf, count);
822}
823
824static void word_memcpy_tocard(unsigned long tp, const void *fp, int count)
825{
826 volatile unsigned short *to = (void *)tp;
827 const unsigned short *from = fp;
828
829 count++;
830 count /= 2;
831
832 while (count--)
833 *to++ = *from++;
834}
835
836static void word_memcpy_fromcard(void *tp, unsigned long fp, int count)
837{
838 unsigned short *to = tp;
839 const volatile unsigned short *from = (const void *)fp;
840
841 count++;
842 count /= 2;
843
844 while (count--)
845 *to++ = *from++;
846}
847
848
849