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Remove all #inclusions of asm/system.h
[linux-2.6.git] / drivers / net / ethernet / 8390 / mac8390.c
blob88ccc8b14f0a4b09aa8097a5f8a5dbcbacb128ba
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 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */
18 /* 2003-12-26: Make sure Asante cards always work. */
19
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
44 static 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 /* First page of TX buffer */
56 #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */
57 #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */
58 #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG
59 /* First page of TX buffer */
60
61 /*
62 * Unfortunately it seems we have to hardcode these for the moment
63 * Shouldn't the card know about this?
64 * Does anyone know where to read it off the card?
65 * Do we trust the data provided by the card?
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
77 enum 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
88 static const char *cardname[] = {
89 "apple",
90 "asante",
91 "farallon",
92 "cabletron",
93 "dayna",
94 "interlan",
95 "kinetics",
96 };
97
98 static const int word16[] = {
99 1, /* apple */
100 1, /* asante */
101 1, /* farallon */
102 1, /* cabletron */
103 0, /* dayna */
104 1, /* interlan */
105 0, /* kinetics */
106 };
107
108 /* on which cards do we use NuBus resources? */
109 static const int useresources[] = {
110 1, /* apple */
111 1, /* asante */
112 1, /* farallon */
113 0, /* cabletron */
114 0, /* dayna */
115 0, /* interlan */
116 0, /* kinetics */
117 };
118
119 enum mac8390_access {
120 ACCESS_UNKNOWN = 0,
121 ACCESS_32,
122 ACCESS_16,
123 };
124
125 extern int mac8390_memtest(struct net_device *dev);
126 static int mac8390_initdev(struct net_device *dev, struct nubus_dev *ndev,
127 enum mac8390_type type);
128
129 static int mac8390_open(struct net_device *dev);
130 static int mac8390_close(struct net_device *dev);
131 static void mac8390_no_reset(struct net_device *dev);
132 static void interlan_reset(struct net_device *dev);
133
134 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/
135 static void sane_get_8390_hdr(struct net_device *dev,
136 struct e8390_pkt_hdr *hdr, int ring_page);
137 static void sane_block_input(struct net_device *dev, int count,
138 struct sk_buff *skb, int ring_offset);
139 static void sane_block_output(struct net_device *dev, int count,
140 const unsigned char *buf, const int start_page);
141
142 /* dayna_memcpy to and from card */
143 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
144 int from, int count);
145 static void dayna_memcpy_tocard(struct net_device *dev, int to,
146 const void *from, int count);
147
148 /* Dayna - Dayna/Kinetics use this */
149 static void dayna_get_8390_hdr(struct net_device *dev,
150 struct e8390_pkt_hdr *hdr, int ring_page);
151 static void dayna_block_input(struct net_device *dev, int count,
152 struct sk_buff *skb, int ring_offset);
153 static void dayna_block_output(struct net_device *dev, int count,
154 const unsigned char *buf, int start_page);
155
156 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
157 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
158
159 #define memcmp_withio(a, b, c) memcmp((a), (void *)(b), (c))
160
161 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
162 static void slow_sane_get_8390_hdr(struct net_device *dev,
163 struct e8390_pkt_hdr *hdr, int ring_page);
164 static void slow_sane_block_input(struct net_device *dev, int count,
165 struct sk_buff *skb, int ring_offset);
166 static void slow_sane_block_output(struct net_device *dev, int count,
167 const unsigned char *buf, int start_page);
168 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count);
169 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
170
171 static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
172 {
173 switch (dev->dr_sw) {
174 case NUBUS_DRSW_3COM:
175 switch (dev->dr_hw) {
176 case NUBUS_DRHW_APPLE_SONIC_NB:
177 case NUBUS_DRHW_APPLE_SONIC_LC:
178 case NUBUS_DRHW_SONNET:
179 return MAC8390_NONE;
180 break;
181 default:
182 return MAC8390_APPLE;
183 break;
184 }
185 break;
186
187 case NUBUS_DRSW_APPLE:
188 switch (dev->dr_hw) {
189 case NUBUS_DRHW_ASANTE_LC:
190 return MAC8390_NONE;
191 break;
192 case NUBUS_DRHW_CABLETRON:
193 return MAC8390_CABLETRON;
194 break;
195 default:
196 return MAC8390_APPLE;
197 break;
198 }
199 break;
200
201 case NUBUS_DRSW_ASANTE:
202 return MAC8390_ASANTE;
203 break;
204
205 case NUBUS_DRSW_TECHWORKS:
206 case NUBUS_DRSW_DAYNA2:
207 case NUBUS_DRSW_DAYNA_LC:
208 if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
209 return MAC8390_CABLETRON;
210 else
211 return MAC8390_APPLE;
212 break;
213
214 case NUBUS_DRSW_FARALLON:
215 return MAC8390_FARALLON;
216 break;
217
218 case NUBUS_DRSW_KINETICS:
219 switch (dev->dr_hw) {
220 case NUBUS_DRHW_INTERLAN:
221 return MAC8390_INTERLAN;
222 break;
223 default:
224 return MAC8390_KINETICS;
225 break;
226 }
227 break;
228
229 case NUBUS_DRSW_DAYNA:
230 /*
231 * These correspond to Dayna Sonic cards
232 * which use the macsonic driver
233 */
234 if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
235 dev->dr_hw == NUBUS_DRHW_INTERLAN)
236 return MAC8390_NONE;
237 else
238 return MAC8390_DAYNA;
239 break;
240 }
241 return MAC8390_NONE;
242 }
243
244 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
245 {
246 unsigned long outdata = 0xA5A0B5B0;
247 unsigned long indata = 0x00000000;
248 /* Try writing 32 bits */
249 memcpy_toio(membase, &outdata, 4);
250 /* Now compare them */
251 if (memcmp_withio(&outdata, membase, 4) == 0)
252 return ACCESS_32;
253 /* Write 16 bit output */
254 word_memcpy_tocard(membase, &outdata, 4);
255 /* Now read it back */
256 word_memcpy_fromcard(&indata, membase, 4);
257 if (outdata == indata)
258 return ACCESS_16;
259 return ACCESS_UNKNOWN;
260 }
261
262 static int __init mac8390_memsize(unsigned long membase)
263 {
264 unsigned long flags;
265 int i, j;
266
267 local_irq_save(flags);
268 /* Check up to 32K in 4K increments */
269 for (i = 0; i < 8; i++) {
270 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
271
272 /* Unwriteable - we have a fully decoded card and the
273 RAM end located */
274 if (hwreg_present(m) == 0)
275 break;
276
277 /* write a distinctive byte */
278 *m = 0xA5A0 | i;
279 /* check that we read back what we wrote */
280 if (*m != (0xA5A0 | i))
281 break;
282
283 /* check for partial decode and wrap */
284 for (j = 0; j < i; j++) {
285 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
286 if (*p != (0xA5A0 | j))
287 break;
288 }
289 }
290 local_irq_restore(flags);
291 /*
292 * in any case, we stopped once we tried one block too many,
293 * or once we reached 32K
294 */
295 return i * 0x1000;
296 }
297
298 static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
299 enum mac8390_type cardtype)
300 {
301 struct nubus_dir dir;
302 struct nubus_dirent ent;
303 int offset;
304 volatile unsigned short *i;
305
306 printk_once(KERN_INFO pr_fmt("%s"), version);
307
308 dev->irq = SLOT2IRQ(ndev->board->slot);
309 /* This is getting to be a habit */
310 dev->base_addr = (ndev->board->slot_addr |
311 ((ndev->board->slot & 0xf) << 20));
312
313 /*
314 * Get some Nubus info - we will trust the card's idea
315 * of where its memory and registers are.
316 */
317
318 if (nubus_get_func_dir(ndev, &dir) == -1) {
319 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n",
320 dev->name, ndev->board->slot);
321 return false;
322 }
323
324 /* Get the MAC address */
325 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
326 pr_info("%s: Couldn't get MAC address!\n", dev->name);
327 return false;
328 }
329
330 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
331
332 if (useresources[cardtype] == 1) {
333 nubus_rewinddir(&dir);
334 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
335 &ent) == -1) {
336 pr_err("%s: Memory offset resource for slot %X not found!\n",
337 dev->name, ndev->board->slot);
338 return false;
339 }
340 nubus_get_rsrc_mem(&offset, &ent, 4);
341 dev->mem_start = dev->base_addr + offset;
342 /* yes, this is how the Apple driver does it */
343 dev->base_addr = dev->mem_start + 0x10000;
344 nubus_rewinddir(&dir);
345 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH,
346 &ent) == -1) {
347 pr_info("%s: Memory length resource for slot %X not found, probing\n",
348 dev->name, ndev->board->slot);
349 offset = mac8390_memsize(dev->mem_start);
350 } else {
351 nubus_get_rsrc_mem(&offset, &ent, 4);
352 }
353 dev->mem_end = dev->mem_start + offset;
354 } else {
355 switch (cardtype) {
356 case MAC8390_KINETICS:
357 case MAC8390_DAYNA: /* it's the same */
358 dev->base_addr = (int)(ndev->board->slot_addr +
359 DAYNA_8390_BASE);
360 dev->mem_start = (int)(ndev->board->slot_addr +
361 DAYNA_8390_MEM);
362 dev->mem_end = dev->mem_start +
363 mac8390_memsize(dev->mem_start);
364 break;
365 case MAC8390_INTERLAN:
366 dev->base_addr = (int)(ndev->board->slot_addr +
367 INTERLAN_8390_BASE);
368 dev->mem_start = (int)(ndev->board->slot_addr +
369 INTERLAN_8390_MEM);
370 dev->mem_end = dev->mem_start +
371 mac8390_memsize(dev->mem_start);
372 break;
373 case MAC8390_CABLETRON:
374 dev->base_addr = (int)(ndev->board->slot_addr +
375 CABLETRON_8390_BASE);
376 dev->mem_start = (int)(ndev->board->slot_addr +
377 CABLETRON_8390_MEM);
378 /* The base address is unreadable if 0x00
379 * has been written to the command register
380 * Reset the chip by writing E8390_NODMA +
381 * E8390_PAGE0 + E8390_STOP just to be
382 * sure
383 */
384 i = (void *)dev->base_addr;
385 *i = 0x21;
386 dev->mem_end = dev->mem_start +
387 mac8390_memsize(dev->mem_start);
388 break;
389
390 default:
391 pr_err("Card type %s is unsupported, sorry\n",
392 ndev->board->name);
393 return false;
394 }
395 }
396
397 return true;
398 }
399
400 struct net_device * __init mac8390_probe(int unit)
401 {
402 struct net_device *dev;
403 struct nubus_dev *ndev = NULL;
404 int err = -ENODEV;
405
406 static unsigned int slots;
407
408 enum mac8390_type cardtype;
409
410 /* probably should check for Nubus instead */
411
412 if (!MACH_IS_MAC)
413 return ERR_PTR(-ENODEV);
414
415 dev = ____alloc_ei_netdev(0);
416 if (!dev)
417 return ERR_PTR(-ENOMEM);
418
419 if (unit >= 0)
420 sprintf(dev->name, "eth%d", unit);
421
422 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET,
423 ndev))) {
424 /* Have we seen it already? */
425 if (slots & (1 << ndev->board->slot))
426 continue;
427 slots |= 1 << ndev->board->slot;
428
429 cardtype = mac8390_ident(ndev);
430 if (cardtype == MAC8390_NONE)
431 continue;
432
433 if (!mac8390_init(dev, ndev, cardtype))
434 continue;
435
436 /* Do the nasty 8390 stuff */
437 if (!mac8390_initdev(dev, ndev, cardtype))
438 break;
439 }
440
441 if (!ndev)
442 goto out;
443 err = register_netdev(dev);
444 if (err)
445 goto out;
446 return dev;
447
448 out:
449 free_netdev(dev);
450 return ERR_PTR(err);
451 }
452
453 #ifdef MODULE
454 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
455 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
456 MODULE_LICENSE("GPL");
457
458 /* overkill, of course */
459 static struct net_device *dev_mac8390[15];
460 int init_module(void)
461 {
462 int i;
463 for (i = 0; i < 15; i++) {
464 struct net_device *dev = mac8390_probe(-1);
465 if (IS_ERR(dev))
466 break;
467 dev_mac890[i] = dev;
468 }
469 if (!i) {
470 pr_notice("No useable cards found, driver NOT installed.\n");
471 return -ENODEV;
472 }
473 return 0;
474 }
475
476 void cleanup_module(void)
477 {
478 int i;
479 for (i = 0; i < 15; i++) {
480 struct net_device *dev = dev_mac890[i];
481 if (dev) {
482 unregister_netdev(dev);
483 free_netdev(dev);
484 }
485 }
486 }
487
488 #endif /* MODULE */
489
490 static const struct net_device_ops mac8390_netdev_ops = {
491 .ndo_open = mac8390_open,
492 .ndo_stop = mac8390_close,
493 .ndo_start_xmit = __ei_start_xmit,
494 .ndo_tx_timeout = __ei_tx_timeout,
495 .ndo_get_stats = __ei_get_stats,
496 .ndo_set_rx_mode = __ei_set_multicast_list,
497 .ndo_validate_addr = eth_validate_addr,
498 .ndo_set_mac_address = eth_mac_addr,
499 .ndo_change_mtu = eth_change_mtu,
500 #ifdef CONFIG_NET_POLL_CONTROLLER
501 .ndo_poll_controller = __ei_poll,
502 #endif
503 };
504
505 static int __init mac8390_initdev(struct net_device *dev,
506 struct nubus_dev *ndev,
507 enum mac8390_type type)
508 {
509 static u32 fwrd4_offsets[16] = {
510 0, 4, 8, 12,
511 16, 20, 24, 28,
512 32, 36, 40, 44,
513 48, 52, 56, 60
514 };
515 static u32 back4_offsets[16] = {
516 60, 56, 52, 48,
517 44, 40, 36, 32,
518 28, 24, 20, 16,
519 12, 8, 4, 0
520 };
521 static u32 fwrd2_offsets[16] = {
522 0, 2, 4, 6,
523 8, 10, 12, 14,
524 16, 18, 20, 22,
525 24, 26, 28, 30
526 };
527
528 int access_bitmode = 0;
529
530 /* Now fill in our stuff */
531 dev->netdev_ops = &mac8390_netdev_ops;
532
533 /* GAR, ei_status is actually a macro even though it looks global */
534 ei_status.name = cardname[type];
535 ei_status.word16 = word16[type];
536
537 /* Cabletron's TX/RX buffers are backwards */
538 if (type == MAC8390_CABLETRON) {
539 ei_status.tx_start_page = CABLETRON_TX_START_PG;
540 ei_status.rx_start_page = CABLETRON_RX_START_PG;
541 ei_status.stop_page = CABLETRON_RX_STOP_PG;
542 ei_status.rmem_start = dev->mem_start;
543 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
544 } else {
545 ei_status.tx_start_page = WD_START_PG;
546 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
547 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
548 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
549 ei_status.rmem_end = dev->mem_end;
550 }
551
552 /* Fill in model-specific information and functions */
553 switch (type) {
554 case MAC8390_FARALLON:
555 case MAC8390_APPLE:
556 switch (mac8390_testio(dev->mem_start)) {
557 case ACCESS_UNKNOWN:
558 pr_err("Don't know how to access card memory!\n");
559 return -ENODEV;
560 break;
561
562 case ACCESS_16:
563 /* 16 bit card, register map is reversed */
564 ei_status.reset_8390 = mac8390_no_reset;
565 ei_status.block_input = slow_sane_block_input;
566 ei_status.block_output = slow_sane_block_output;
567 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
568 ei_status.reg_offset = back4_offsets;
569 break;
570
571 case ACCESS_32:
572 /* 32 bit card, register map is reversed */
573 ei_status.reset_8390 = mac8390_no_reset;
574 ei_status.block_input = sane_block_input;
575 ei_status.block_output = sane_block_output;
576 ei_status.get_8390_hdr = sane_get_8390_hdr;
577 ei_status.reg_offset = back4_offsets;
578 access_bitmode = 1;
579 break;
580 }
581 break;
582
583 case MAC8390_ASANTE:
584 /* Some Asante cards pass the 32 bit test
585 * but overwrite system memory when run at 32 bit.
586 * so we run them all at 16 bit.
587 */
588 ei_status.reset_8390 = mac8390_no_reset;
589 ei_status.block_input = slow_sane_block_input;
590 ei_status.block_output = slow_sane_block_output;
591 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
592 ei_status.reg_offset = back4_offsets;
593 break;
594
595 case MAC8390_CABLETRON:
596 /* 16 bit card, register map is short forward */
597 ei_status.reset_8390 = mac8390_no_reset;
598 ei_status.block_input = slow_sane_block_input;
599 ei_status.block_output = slow_sane_block_output;
600 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
601 ei_status.reg_offset = fwrd2_offsets;
602 break;
603
604 case MAC8390_DAYNA:
605 case MAC8390_KINETICS:
606 /* 16 bit memory, register map is forward */
607 /* dayna and similar */
608 ei_status.reset_8390 = mac8390_no_reset;
609 ei_status.block_input = dayna_block_input;
610 ei_status.block_output = dayna_block_output;
611 ei_status.get_8390_hdr = dayna_get_8390_hdr;
612 ei_status.reg_offset = fwrd4_offsets;
613 break;
614
615 case MAC8390_INTERLAN:
616 /* 16 bit memory, register map is forward */
617 ei_status.reset_8390 = interlan_reset;
618 ei_status.block_input = slow_sane_block_input;
619 ei_status.block_output = slow_sane_block_output;
620 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
621 ei_status.reg_offset = fwrd4_offsets;
622 break;
623
624 default:
625 pr_err("Card type %s is unsupported, sorry\n",
626 ndev->board->name);
627 return -ENODEV;
628 }
629
630 __NS8390_init(dev, 0);
631
632 /* Good, done, now spit out some messages */
633 pr_info("%s: %s in slot %X (type %s)\n",
634 dev->name, ndev->board->name, ndev->board->slot,
635 cardname[type]);
636 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
637 dev->dev_addr, dev->irq,
638 (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
639 dev->mem_start, access_bitmode ? 32 : 16);
640 return 0;
641 }
642
643 static int mac8390_open(struct net_device *dev)
644 {
645 int err;
646
647 __ei_open(dev);
648 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev);
649 if (err)
650 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq);
651 return err;
652 }
653
654 static int mac8390_close(struct net_device *dev)
655 {
656 free_irq(dev->irq, dev);
657 __ei_close(dev);
658 return 0;
659 }
660
661 static void mac8390_no_reset(struct net_device *dev)
662 {
663 ei_status.txing = 0;
664 if (ei_debug > 1)
665 pr_info("reset not supported\n");
666 }
667
668 static void interlan_reset(struct net_device *dev)
669 {
670 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
671 if (ei_debug > 1)
672 pr_info("Need to reset the NS8390 t=%lu...", jiffies);
673 ei_status.txing = 0;
674 target[0xC0000] = 0;
675 if (ei_debug > 1)
676 pr_cont("reset complete\n");
677 }
678
679 /* dayna_memcpy_fromio/dayna_memcpy_toio */
680 /* directly from daynaport.c by Alan Cox */
681 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
682 int count)
683 {
684 volatile unsigned char *ptr;
685 unsigned char *target = to;
686 from <<= 1; /* word, skip overhead */
687 ptr = (unsigned char *)(dev->mem_start+from);
688 /* Leading byte? */
689 if (from & 2) {
690 *target++ = ptr[-1];
691 ptr += 2;
692 count--;
693 }
694 while (count >= 2) {
695 *(unsigned short *)target = *(unsigned short volatile *)ptr;
696 ptr += 4; /* skip cruft */
697 target += 2;
698 count -= 2;
699 }
700 /* Trailing byte? */
701 if (count)
702 *target = *ptr;
703 }
704
705 static void dayna_memcpy_tocard(struct net_device *dev, int to,
706 const void *from, int count)
707 {
708 volatile unsigned short *ptr;
709 const unsigned char *src = from;
710 to <<= 1; /* word, skip overhead */
711 ptr = (unsigned short *)(dev->mem_start+to);
712 /* Leading byte? */
713 if (to & 2) { /* avoid a byte write (stomps on other data) */
714 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
715 ptr++;
716 count--;
717 }
718 while (count >= 2) {
719 *ptr++ = *(unsigned short *)src; /* Copy and */
720 ptr++; /* skip cruft */
721 src += 2;
722 count -= 2;
723 }
724 /* Trailing byte? */
725 if (count) {
726 /* card doesn't like byte writes */
727 *ptr = (*ptr & 0x00FF) | (*src << 8);
728 }
729 }
730
731 /* sane block input/output */
732 static void sane_get_8390_hdr(struct net_device *dev,
733 struct e8390_pkt_hdr *hdr, int ring_page)
734 {
735 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
736 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4);
737 /* Fix endianness */
738 hdr->count = swab16(hdr->count);
739 }
740
741 static void sane_block_input(struct net_device *dev, int count,
742 struct sk_buff *skb, int ring_offset)
743 {
744 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
745 unsigned long xfer_start = xfer_base + dev->mem_start;
746
747 if (xfer_start + count > ei_status.rmem_end) {
748 /* We must wrap the input move. */
749 int semi_count = ei_status.rmem_end - xfer_start;
750 memcpy_fromio(skb->data, dev->mem_start + xfer_base,
751 semi_count);
752 count -= semi_count;
753 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start,
754 count);
755 } else {
756 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count);
757 }
758 }
759
760 static void sane_block_output(struct net_device *dev, int count,
761 const unsigned char *buf, int start_page)
762 {
763 long shmem = (start_page - WD_START_PG)<<8;
764
765 memcpy_toio(dev->mem_start + shmem, buf, count);
766 }
767
768 /* dayna block input/output */
769 static void dayna_get_8390_hdr(struct net_device *dev,
770 struct e8390_pkt_hdr *hdr, int ring_page)
771 {
772 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
773
774 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
775 /* Fix endianness */
776 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
777 }
778
779 static void dayna_block_input(struct net_device *dev, int count,
780 struct sk_buff *skb, int ring_offset)
781 {
782 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
783 unsigned long xfer_start = xfer_base+dev->mem_start;
784
785 /* Note the offset math is done in card memory space which is word
786 per long onto our space. */
787
788 if (xfer_start + count > ei_status.rmem_end) {
789 /* We must wrap the input move. */
790 int semi_count = ei_status.rmem_end - xfer_start;
791 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
792 count -= semi_count;
793 dayna_memcpy_fromcard(dev, skb->data + semi_count,
794 ei_status.rmem_start - dev->mem_start,
795 count);
796 } else {
797 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
798 }
799 }
800
801 static void dayna_block_output(struct net_device *dev, int count,
802 const unsigned char *buf,
803 int start_page)
804 {
805 long shmem = (start_page - WD_START_PG)<<8;
806
807 dayna_memcpy_tocard(dev, shmem, buf, count);
808 }
809
810 /* Cabletron block I/O */
811 static void slow_sane_get_8390_hdr(struct net_device *dev,
812 struct e8390_pkt_hdr *hdr,
813 int ring_page)
814 {
815 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
816 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4);
817 /* Register endianism - fix here rather than 8390.c */
818 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
819 }
820
821 static void slow_sane_block_input(struct net_device *dev, int count,
822 struct sk_buff *skb, int ring_offset)
823 {
824 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
825 unsigned long xfer_start = xfer_base+dev->mem_start;
826
827 if (xfer_start + count > ei_status.rmem_end) {
828 /* We must wrap the input move. */
829 int semi_count = ei_status.rmem_end - xfer_start;
830 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
831 semi_count);
832 count -= semi_count;
833 word_memcpy_fromcard(skb->data + semi_count,
834 ei_status.rmem_start, count);
835 } else {
836 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
837 count);
838 }
839 }
840
841 static void slow_sane_block_output(struct net_device *dev, int count,
842 const unsigned char *buf, int start_page)
843 {
844 long shmem = (start_page - WD_START_PG)<<8;
845
846 word_memcpy_tocard(dev->mem_start + shmem, buf, count);
847 }
848
849 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count)
850 {
851 volatile unsigned short *to = (void *)tp;
852 const unsigned short *from = fp;
853
854 count++;
855 count /= 2;
856
857 while (count--)
858 *to++ = *from++;
859 }
860
861 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count)
862 {
863 unsigned short *to = tp;
864 const volatile unsigned short *from = (const void *)fp;
865
866 count++;
867 count /= 2;
868
869 while (count--)
870 *to++ = *from++;
871 }
872
873
Linus' kernel tree