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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / net / mac8390.c
blob0a8094eb30610dfd384baa60dbe64b30d509526a
1 /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike)
2 Ethernet cards on Linux */
3 /* Based on the former daynaport.c driver, by Alan Cox. Some code
4 taken from or inspired by skeleton.c by Donald Becker, acenic.c by
5 Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker.
6
7 This software may be used and distributed according to the terms of
8 the GNU Public License, incorporated herein by reference. */
9
10 /* 2000-02-28: support added for Dayna and Kinetics cards by
11 A.G.deWijn@phys.uu.nl */
12 /* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */
13 /* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */
14 /* 2001-05-15: support for Cabletron ported from old daynaport driver
15 * and fixed access to Sonic Sys card which masquerades as a Farallon
16 * by rayk@knightsmanor.org */
17
18 #include <linux/version.h>
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/fcntl.h>
23 #include <linux/interrupt.h>
24 #include <linux/ptrace.h>
25 #include <linux/ioport.h>
26 #include <linux/nubus.h>
27 #include <linux/in.h>
28 #include <linux/slab.h>
29 #include <linux/string.h>
30 #include <linux/errno.h>
31 #include <linux/init.h>
32 #include <linux/netdevice.h>
33 #include <linux/etherdevice.h>
34 #include <linux/skbuff.h>
35
36 #include <asm/system.h>
37 #include <asm/bitops.h>
38 #include <asm/io.h>
39 #include <asm/dma.h>
40 #include <asm/hwtest.h>
41 #include <asm/macints.h>
42
43 #include "8390.h"
44
45 #if (LINUX_VERSION_CODE < 0x02030e)
46 #define net_device device
47 #endif
48
49 #define WD_START_PG 0x00 /* First page of TX buffer */
50 #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */
51 #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */
52 #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG /* First page of TX buffer */
53
54 /* Unfortunately it seems we have to hardcode these for the moment */
55 /* Shouldn't the card know about this? Does anyone know where to read it off the card? Do we trust the data provided by the card? */
56
57 #define DAYNA_8390_BASE 0x80000
58 #define DAYNA_8390_MEM 0x00000
59
60 #define KINETICS_8390_BASE 0x80000
61 #define KINETICS_8390_MEM 0x00000
62
63 #define CABLETRON_8390_BASE 0x90000
64 #define CABLETRON_8390_MEM 0x00000
65
66 enum mac8390_type {
67 MAC8390_NONE = -1,
68 MAC8390_APPLE,
69 MAC8390_ASANTE,
70 MAC8390_FARALLON, /* Apple, Asante, and Farallon are all compatible */
71 MAC8390_CABLETRON,
72 MAC8390_DAYNA,
73 MAC8390_INTERLAN,
74 MAC8390_KINETICS,
75 MAC8390_FOCUS,
76 MAC8390_SONICSYS,
77 MAC8390_DAYNA2,
78 MAC8390_DAYNA3,
79 };
80
81 static const char * cardname[] = {
82 "apple",
83 "asante",
84 "farallon",
85 "cabletron",
86 "dayna",
87 "interlan",
88 "kinetics",
89 "focus",
90 "sonic systems",
91 "dayna2",
92 "dayna_lc",
93 };
94
95 static int word16[] = {
96 1, /* apple */
97 1, /* asante */
98 1, /* farallon */
99 1, /* cabletron */
100 0, /* dayna */
101 1, /* interlan */
102 0, /* kinetics */
103 1, /* focus (??) */
104 1, /* sonic systems */
105 1, /* dayna2 */
106 1, /* dayna-lc */
107 };
108
109 /* on which cards do we use NuBus resources? */
110 static int useresources[] = {
111 1, /* apple */
112 1, /* asante */
113 1, /* farallon */
114 0, /* cabletron */
115 0, /* dayna */
116 0, /* interlan */
117 0, /* kinetics */
118 0, /* focus (??) */
119 1, /* sonic systems */
120 1, /* dayna2 */
121 1, /* dayna-lc */
122 };
123
124 static char version[] __initdata =
125 "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
126
127 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
128 extern int mac8390_memsize(unsigned long membase);
129 extern int mac8390_memtest(struct net_device * dev);
130 static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
131 enum mac8390_type type);
132
133 static int mac8390_open(struct net_device * dev);
134 static int mac8390_close(struct net_device * dev);
135 static void mac8390_no_reset(struct net_device *dev);
136
137 /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
138 static void sane_get_8390_hdr(struct net_device *dev,
139 struct e8390_pkt_hdr *hdr, int ring_page);
140 static void sane_block_input(struct net_device * dev, int count,
141 struct sk_buff * skb, int ring_offset);
142 static void sane_block_output(struct net_device * dev, int count,
143 const unsigned char * buf, const int start_page);
144
145 /* dayna_memcpy to and from card */
146 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
147 int from, int count);
148 static void dayna_memcpy_tocard(struct net_device *dev, int to,
149 const void *from, int count);
150
151 /* Dayna - Dayna/Kinetics use this */
152 static void dayna_get_8390_hdr(struct net_device *dev,
153 struct e8390_pkt_hdr *hdr, int ring_page);
154 static void dayna_block_input(struct net_device *dev, int count,
155 struct sk_buff *skb, int ring_offset);
156 static void dayna_block_output(struct net_device *dev, int count,
157 const unsigned char *buf, int start_page);
158
159 #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
160 #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
161
162 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
163 static void slow_sane_get_8390_hdr(struct net_device *dev,
164 struct e8390_pkt_hdr *hdr, int ring_page);
165 static void slow_sane_block_input(struct net_device *dev, int count,
166 struct sk_buff *skb, int ring_offset);
167 static void slow_sane_block_output(struct net_device *dev, int count,
168 const unsigned char *buf, int start_page);
169 static void word_memcpy_tocard(void *tp, const void *fp, int count);
170 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
171
172 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
173 {
174 if (dev->dr_sw == NUBUS_DRSW_ASANTE)
175 return MAC8390_ASANTE;
176 if (dev->dr_sw == NUBUS_DRSW_FARALLON)
177 return MAC8390_FARALLON;
178 if (dev->dr_sw == NUBUS_DRSW_KINETICS)
179 return MAC8390_KINETICS;
180 if (dev->dr_sw == NUBUS_DRSW_DAYNA)
181 return MAC8390_DAYNA;
182 if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
183 return MAC8390_DAYNA2;
184 if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
185 return MAC8390_DAYNA3;
186 if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
187 return MAC8390_CABLETRON;
188 return MAC8390_NONE;
189 }
190
191 int __init mac8390_memsize(unsigned long membase)
192 {
193 unsigned long flags;
194 int i, j;
195
196 local_irq_save(flags);
197 /* Check up to 32K in 4K increments */
198 for (i = 0; i < 8; i++) {
199 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
200
201 /* Unwriteable - we have a fully decoded card and the
202 RAM end located */
203 if (hwreg_present(m) == 0)
204 break;
205
206 /* write a distinctive byte */
207 *m = 0xA5A0 | i;
208 /* check that we read back what we wrote */
209 if (*m != (0xA5A0 | i))
210 break;
211
212 /* check for partial decode and wrap */
213 for (j = 0; j < i; j++) {
214 volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
215 if (*p != (0xA5A0 | j))
216 break;
217 }
218 }
219 local_irq_restore(flags);
220 /* in any case, we stopped once we tried one block too many,
221 or once we reached 32K */
222 return i * 0x1000;
223 }
224
225 struct net_device * __init mac8390_probe(int unit)
226 {
227 struct net_device *dev;
228 volatile unsigned short *i;
229 int version_disp = 0;
230 struct nubus_dev * ndev = NULL;
231 int err = -ENODEV;
232
233 struct nubus_dir dir;
234 struct nubus_dirent ent;
235 int offset;
236 static unsigned int slots;
237
238 enum mac8390_type cardtype;
239
240 /* probably should check for Nubus instead */
241
242 if (!MACH_IS_MAC)
243 return ERR_PTR(-ENODEV);
244
245 dev = alloc_ei_netdev();
246 if (!dev)
247 return ERR_PTR(-ENOMEM);
248
249 if (unit >= 0)
250 sprintf(dev->name, "eth%d", unit);
251
252 SET_MODULE_OWNER(dev);
253
254 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
255 /* Have we seen it already? */
256 if (slots & (1<<ndev->board->slot))
257 continue;
258 slots |= 1<<ndev->board->slot;
259
260 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
261 continue;
262
263 if (version_disp == 0) {
264 version_disp = 1;
265 printk(version);
266 }
267
268 dev->irq = SLOT2IRQ(ndev->board->slot);
269 /* This is getting to be a habit */
270 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
271
272 /* Get some Nubus info - we will trust the card's idea
273 of where its memory and registers are. */
274
275 if (nubus_get_func_dir(ndev, &dir) == -1) {
276 printk(KERN_ERR "%s: Unable to get Nubus functional"
277 " directory for slot %X!\n",
278 dev->name, ndev->board->slot);
279 continue;
280 }
281
282 /* Get the MAC address */
283 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
284 printk(KERN_INFO "%s: Couldn't get MAC address!\n",
285 dev->name);
286 continue;
287 } else {
288 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
289 /* Some Sonic Sys cards masquerade as Farallon */
290 if (cardtype == MAC8390_FARALLON &&
291 dev->dev_addr[0] == 0x0 &&
292 dev->dev_addr[1] == 0x40 &&
293 dev->dev_addr[2] == 0x10) {
294 /* This is really Sonic Sys card */
295 cardtype = MAC8390_SONICSYS;
296 }
297 }
298
299 if (useresources[cardtype] == 1) {
300 nubus_rewinddir(&dir);
301 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
302 printk(KERN_ERR "%s: Memory offset resource"
303 " for slot %X not found!\n",
304 dev->name, ndev->board->slot);
305 continue;
306 }
307 nubus_get_rsrc_mem(&offset, &ent, 4);
308 dev->mem_start = dev->base_addr + offset;
309 /* yes, this is how the Apple driver does it */
310 dev->base_addr = dev->mem_start + 0x10000;
311 nubus_rewinddir(&dir);
312 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
313 printk(KERN_INFO "%s: Memory length resource"
314 " for slot %X not found"
315 ", probing\n",
316 dev->name, ndev->board->slot);
317 offset = mac8390_memsize(dev->mem_start);
318 } else {
319 nubus_get_rsrc_mem(&offset, &ent, 4);
320 }
321 dev->mem_end = dev->mem_start + offset;
322 } else {
323 switch (cardtype) {
324 case MAC8390_KINETICS:
325 case MAC8390_DAYNA: /* it's the same */
326 dev->base_addr =
327 (int)(ndev->board->slot_addr +
328 DAYNA_8390_BASE);
329 dev->mem_start =
330 (int)(ndev->board->slot_addr +
331 DAYNA_8390_MEM);
332 dev->mem_end =
333 dev->mem_start +
334 mac8390_memsize(dev->mem_start);
335 break;
336 case MAC8390_CABLETRON:
337 dev->base_addr =
338 (int)(ndev->board->slot_addr +
339 CABLETRON_8390_BASE);
340 dev->mem_start =
341 (int)(ndev->board->slot_addr +
342 CABLETRON_8390_MEM);
343 /* The base address is unreadable if 0x00
344 * has been written to the command register
345 * Reset the chip by writing E8390_NODMA +
346 * E8390_PAGE0 + E8390_STOP just to be
347 * sure
348 */
349 i = (void *)dev->base_addr;
350 *i = 0x21;
351 dev->mem_end =
352 dev->mem_start +
353 mac8390_memsize(dev->mem_start);
354 break;
355
356 default:
357 printk(KERN_ERR "Card type %s is"
358 " unsupported, sorry\n",
359 cardname[cardtype]);
360 continue;
361 }
362 }
363
364 /* Do the nasty 8390 stuff */
365 if (!mac8390_initdev(dev, ndev, cardtype))
366 break;
367 }
368
369 if (!ndev)
370 goto out;
371 err = register_netdev(dev);
372 if (err)
373 goto out;
374 return dev;
375
376 out:
377 free_netdev(dev);
378 return ERR_PTR(err);
379 }
380
381 #ifdef MODULE
382 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
383 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
384 MODULE_LICENSE("GPL");
385
386 /* overkill, of course */
387 static struct net_device *dev_mac8390[15];
388 int init_module(void)
389 {
390 int i;
391 for (i = 0; i < 15; i++) {
392 struct net_device *dev = mac8390_probe(-1);
393 if (IS_ERR(dev))
394 break;
395 dev_mac890[i] = dev;
396 }
397 if (!i) {
398 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
399 return -ENODEV;
400 }
401 return 0;
402 }
403
404 void cleanup_module(void)
405 {
406 int i;
407 for (i = 0; i < 15; i++) {
408 struct net_device *dev = dev_mac890[i];
409 if (dev) {
410 unregister_netdev(dev);
411 free_netdev(dev);
412 }
413 }
414 }
415
416 #endif /* MODULE */
417
418 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
419 enum mac8390_type type)
420 {
421 static u32 fwrd4_offsets[16]={
422 0, 4, 8, 12,
423 16, 20, 24, 28,
424 32, 36, 40, 44,
425 48, 52, 56, 60
426 };
427 static u32 back4_offsets[16]={
428 60, 56, 52, 48,
429 44, 40, 36, 32,
430 28, 24, 20, 16,
431 12, 8, 4, 0
432 };
433 static u32 fwrd2_offsets[16]={
434 0, 2, 4, 6,
435 8, 10, 12, 14,
436 16, 18, 20, 22,
437 24, 26, 28, 30
438 };
439
440 int access_bitmode;
441
442 /* Now fill in our stuff */
443 dev->open = &mac8390_open;
444 dev->stop = &mac8390_close;
445 #ifdef CONFIG_NET_POLL_CONTROLLER
446 dev->poll_controller = ei_poll;
447 #endif
448
449 /* GAR, ei_status is actually a macro even though it looks global */
450 ei_status.name = cardname[type];
451 ei_status.word16 = word16[type];
452
453 /* Cabletron's TX/RX buffers are backwards */
454 if (type == MAC8390_CABLETRON) {
455 ei_status.tx_start_page = CABLETRON_TX_START_PG;
456 ei_status.rx_start_page = CABLETRON_RX_START_PG;
457 ei_status.stop_page = CABLETRON_RX_STOP_PG;
458 ei_status.rmem_start = dev->mem_start;
459 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
460 } else {
461 ei_status.tx_start_page = WD_START_PG;
462 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
463 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
464 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
465 ei_status.rmem_end = dev->mem_end;
466 }
467
468 /* Fill in model-specific information and functions */
469 switch(type) {
470 case MAC8390_SONICSYS:
471 /* 16 bit card, register map is reversed */
472 ei_status.reset_8390 = &mac8390_no_reset;
473 ei_status.block_input = &slow_sane_block_input;
474 ei_status.block_output = &slow_sane_block_output;
475 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
476 ei_status.reg_offset = back4_offsets;
477 access_bitmode = 0;
478 break;
479 case MAC8390_FARALLON:
480 case MAC8390_APPLE:
481 case MAC8390_ASANTE:
482 case MAC8390_DAYNA2:
483 case MAC8390_DAYNA3:
484 /* 32 bit card, register map is reversed */
485 /* sane */
486 ei_status.reset_8390 = &mac8390_no_reset;
487 ei_status.block_input = &sane_block_input;
488 ei_status.block_output = &sane_block_output;
489 ei_status.get_8390_hdr = &sane_get_8390_hdr;
490 ei_status.reg_offset = back4_offsets;
491 access_bitmode = 1;
492 break;
493 case MAC8390_CABLETRON:
494 /* 16 bit card, register map is short forward */
495 ei_status.reset_8390 = &mac8390_no_reset;
496 ei_status.block_input = &slow_sane_block_input;
497 ei_status.block_output = &slow_sane_block_output;
498 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
499 ei_status.reg_offset = fwrd2_offsets;
500 access_bitmode = 0;
501 break;
502 case MAC8390_DAYNA:
503 case MAC8390_KINETICS:
504 /* 16 bit memory */
505 /* dayna and similar */
506 ei_status.reset_8390 = &mac8390_no_reset;
507 ei_status.block_input = &dayna_block_input;
508 ei_status.block_output = &dayna_block_output;
509 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
510 ei_status.reg_offset = fwrd4_offsets;
511 access_bitmode = 0;
512 break;
513 default:
514 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
515 return -ENODEV;
516 }
517
518 NS8390_init(dev, 0);
519
520 /* Good, done, now spit out some messages */
521 printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
522 dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
523 printk(KERN_INFO "MAC ");
524 {
525 int i;
526 for (i = 0; i < 6; i++) {
527 printk("%2.2x", dev->dev_addr[i]);
528 if (i < 5)
529 printk(":");
530 }
531 }
532 printk(" IRQ %d, shared memory at %#lx-%#lx, %d-bit access.\n",
533 dev->irq, dev->mem_start, dev->mem_end-1,
534 access_bitmode?32:16);
535 return 0;
536 }
537
538 static int mac8390_open(struct net_device *dev)
539 {
540 ei_open(dev);
541 if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
542 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
543 return -EAGAIN;
544 }
545 return 0;
546 }
547
548 static int mac8390_close(struct net_device *dev)
549 {
550 free_irq(dev->irq, dev);
551 ei_close(dev);
552 return 0;
553 }
554
555 static void mac8390_no_reset(struct net_device *dev)
556 {
557 ei_status.txing = 0;
558 if (ei_debug > 1)
559 printk("reset not supported\n");
560 return;
561 }
562
563 /* dayna_memcpy_fromio/dayna_memcpy_toio */
564 /* directly from daynaport.c by Alan Cox */
565 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
566 {
567 volatile unsigned short *ptr;
568 unsigned short *target=to;
569 from<<=1; /* word, skip overhead */
570 ptr=(unsigned short *)(dev->mem_start+from);
571 /* Leading byte? */
572 if (from&2) {
573 *((char *)target)++ = *(((char *)ptr++)-1);
574 count--;
575 }
576 while(count>=2)
577 {
578 *target++=*ptr++; /* Copy and */
579 ptr++; /* skip cruft */
580 count-=2;
581 }
582 /* Trailing byte? */
583 if(count)
584 {
585 /* Big endian */
586 unsigned short v=*ptr;
587 *((char *)target)=v>>8;
588 }
589 }
590
591 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
592 {
593 volatile unsigned short *ptr;
594 const unsigned short *src=from;
595 to<<=1; /* word, skip overhead */
596 ptr=(unsigned short *)(dev->mem_start+to);
597 /* Leading byte? */
598 if (to&2) { /* avoid a byte write (stomps on other data) */
599 ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
600 ptr++;
601 count--;
602 }
603 while(count>=2)
604 {
605 *ptr++=*src++; /* Copy and */
606 ptr++; /* skip cruft */
607 count-=2;
608 }
609 /* Trailing byte? */
610 if(count)
611 {
612 /* Big endian */
613 unsigned short v=*src;
614 /* card doesn't like byte writes */
615 *ptr=(*ptr&0x00FF)|(v&0xFF00);
616 }
617 }
618
619 /* sane block input/output */
620 static void sane_get_8390_hdr(struct net_device *dev,
621 struct e8390_pkt_hdr *hdr, int ring_page)
622 {
623 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
624 memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
625 /* Fix endianness */
626 hdr->count = swab16(hdr->count);
627 }
628
629 static void sane_block_input(struct net_device *dev, int count,
630 struct sk_buff *skb, int ring_offset)
631 {
632 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
633 unsigned long xfer_start = xfer_base + dev->mem_start;
634
635 if (xfer_start + count > ei_status.rmem_end) {
636 /* We must wrap the input move. */
637 int semi_count = ei_status.rmem_end - xfer_start;
638 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
639 count -= semi_count;
640 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
641 } else {
642 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
643 }
644 }
645
646 static void sane_block_output(struct net_device *dev, int count,
647 const unsigned char *buf, int start_page)
648 {
649 long shmem = (start_page - WD_START_PG)<<8;
650
651 memcpy_toio((char *)dev->mem_start + shmem, buf, count);
652 }
653
654 /* dayna block input/output */
655 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
656 {
657 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
658
659 dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
660 /* Fix endianness */
661 hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
662 }
663
664 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
665 {
666 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
667 unsigned long xfer_start = xfer_base+dev->mem_start;
668
669 /* Note the offset math is done in card memory space which is word
670 per long onto our space. */
671
672 if (xfer_start + count > ei_status.rmem_end)
673 {
674 /* We must wrap the input move. */
675 int semi_count = ei_status.rmem_end - xfer_start;
676 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
677 count -= semi_count;
678 dayna_memcpy_fromcard(dev, skb->data + semi_count,
679 ei_status.rmem_start - dev->mem_start,
680 count);
681 }
682 else
683 {
684 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
685 }
686 }
687
688 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
689 int start_page)
690 {
691 long shmem = (start_page - WD_START_PG)<<8;
692
693 dayna_memcpy_tocard(dev, shmem, buf, count);
694 }
695
696 /* Cabletron block I/O */
697 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
698 int ring_page)
699 {
700 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
701 word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
702 /* Register endianism - fix here rather than 8390.c */
703 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
704 }
705
706 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
707 int ring_offset)
708 {
709 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
710 unsigned long xfer_start = xfer_base+dev->mem_start;
711
712 if (xfer_start + count > ei_status.rmem_end)
713 {
714 /* We must wrap the input move. */
715 int semi_count = ei_status.rmem_end - xfer_start;
716 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
717 xfer_base, semi_count);
718 count -= semi_count;
719 word_memcpy_fromcard(skb->data + semi_count,
720 (char *)ei_status.rmem_start, count);
721 }
722 else
723 {
724 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
725 xfer_base, count);
726 }
727 }
728
729 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
730 int start_page)
731 {
732 long shmem = (start_page - WD_START_PG)<<8;
733
734 word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
735 }
736
737 static void word_memcpy_tocard(void *tp, const void *fp, int count)
738 {
739 volatile unsigned short *to = tp;
740 const unsigned short *from = fp;
741
742 count++;
743 count/=2;
744
745 while(count--)
746 *to++=*from++;
747 }
748
749 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
750 {
751 unsigned short *to = tp;
752 const volatile unsigned short *from = fp;
753
754 count++;
755 count/=2;
756
757 while(count--)
758 *to++=*from++;
759 }
760
761
MOXA 2.6.9 from sdlinux-moxaart.tgz