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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / ethernet / 8390 / mac8390.c
blobd60a86aa8aa8049e7c5216f15f64b6d8406ec115
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_board *board,
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 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
157 static void slow_sane_get_8390_hdr(struct net_device *dev,
158 struct e8390_pkt_hdr *hdr, int ring_page);
159 static void slow_sane_block_input(struct net_device *dev, int count,
160 struct sk_buff *skb, int ring_offset);
161 static void slow_sane_block_output(struct net_device *dev, int count,
162 const unsigned char *buf, int start_page);
163 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count);
164 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
165
166 static 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 break;
179
180 case NUBUS_DRSW_APPLE:
181 switch (fres->dr_hw) {
182 case NUBUS_DRHW_ASANTE_LC:
183 return MAC8390_NONE;
184 case NUBUS_DRHW_CABLETRON:
185 return MAC8390_CABLETRON;
186 default:
187 return MAC8390_APPLE;
188 }
189 break;
190
191 case NUBUS_DRSW_ASANTE:
192 return MAC8390_ASANTE;
193 break;
194
195 case NUBUS_DRSW_TECHWORKS:
196 case NUBUS_DRSW_DAYNA2:
197 case NUBUS_DRSW_DAYNA_LC:
198 if (fres->dr_hw == NUBUS_DRHW_CABLETRON)
199 return MAC8390_CABLETRON;
200 else
201 return MAC8390_APPLE;
202 break;
203
204 case NUBUS_DRSW_FARALLON:
205 return MAC8390_FARALLON;
206 break;
207
208 case NUBUS_DRSW_KINETICS:
209 switch (fres->dr_hw) {
210 case NUBUS_DRHW_INTERLAN:
211 return MAC8390_INTERLAN;
212 default:
213 return MAC8390_KINETICS;
214 }
215 break;
216
217 case NUBUS_DRSW_DAYNA:
218 /*
219 * These correspond to Dayna Sonic cards
220 * which use the macsonic driver
221 */
222 if (fres->dr_hw == NUBUS_DRHW_SMC9194 ||
223 fres->dr_hw == NUBUS_DRHW_INTERLAN)
224 return MAC8390_NONE;
225 else
226 return MAC8390_DAYNA;
227 break;
228 }
229 return MAC8390_NONE;
230 }
231
232 static enum mac8390_access mac8390_testio(unsigned long membase)
233 {
234 u32 outdata = 0xA5A0B5B0;
235 u32 indata = 0;
236
237 /* Try writing 32 bits */
238 nubus_writel(outdata, membase);
239 /* Now read it back */
240 indata = nubus_readl(membase);
241 if (outdata == indata)
242 return ACCESS_32;
243
244 outdata = 0xC5C0D5D0;
245 indata = 0;
246
247 /* Write 16 bit output */
248 word_memcpy_tocard(membase, &outdata, 4);
249 /* Now read it back */
250 word_memcpy_fromcard(&indata, membase, 4);
251 if (outdata == indata)
252 return ACCESS_16;
253
254 return ACCESS_UNKNOWN;
255 }
256
257 static int mac8390_memsize(unsigned long membase)
258 {
259 unsigned long flags;
260 int i, j;
261
262 local_irq_save(flags);
263 /* Check up to 32K in 4K increments */
264 for (i = 0; i < 8; i++) {
265 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
266
267 /* Unwriteable - we have a fully decoded card and the
268 RAM end located */
269 if (hwreg_present(m) == 0)
270 break;
271
272 /* write a distinctive byte */
273 *m = 0xA5A0 | i;
274 /* check that we read back what we wrote */
275 if (*m != (0xA5A0 | i))
276 break;
277
278 /* check for partial decode and wrap */
279 for (j = 0; j < i; j++) {
280 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
281 if (*p != (0xA5A0 | j))
282 break;
283 }
284 }
285 local_irq_restore(flags);
286 /*
287 * in any case, we stopped once we tried one block too many,
288 * or once we reached 32K
289 */
290 return i * 0x1000;
291 }
292
293 static bool mac8390_rsrc_init(struct net_device *dev,
294 struct nubus_rsrc *fres,
295 enum mac8390_type cardtype)
296 {
297 struct nubus_board *board = fres->board;
298 struct nubus_dir dir;
299 struct nubus_dirent ent;
300 int offset;
301 volatile unsigned short *i;
302
303 dev->irq = SLOT2IRQ(board->slot);
304 /* This is getting to be a habit */
305 dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20);
306
307 /*
308 * Get some Nubus info - we will trust the card's idea
309 * of where its memory and registers are.
310 */
311
312 if (nubus_get_func_dir(fres, &dir) == -1) {
313 dev_err(&board->dev,
314 "Unable to get Nubus functional directory\n");
315 return false;
316 }
317
318 /* Get the MAC address */
319 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
320 dev_info(&board->dev, "MAC address resource not found\n");
321 return false;
322 }
323
324 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
325
326 if (useresources[cardtype] == 1) {
327 nubus_rewinddir(&dir);
328 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
329 &ent) == -1) {
330 dev_err(&board->dev,
331 "Memory offset resource not found\n");
332 return false;
333 }
334 nubus_get_rsrc_mem(&offset, &ent, 4);
335 dev->mem_start = dev->base_addr + offset;
336 /* yes, this is how the Apple driver does it */
337 dev->base_addr = dev->mem_start + 0x10000;
338 nubus_rewinddir(&dir);
339 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH,
340 &ent) == -1) {
341 dev_info(&board->dev,
342 "Memory length resource not found, probing\n");
343 offset = mac8390_memsize(dev->mem_start);
344 } else {
345 nubus_get_rsrc_mem(&offset, &ent, 4);
346 }
347 dev->mem_end = dev->mem_start + offset;
348 } else {
349 switch (cardtype) {
350 case MAC8390_KINETICS:
351 case MAC8390_DAYNA: /* it's the same */
352 dev->base_addr = (int)(board->slot_addr +
353 DAYNA_8390_BASE);
354 dev->mem_start = (int)(board->slot_addr +
355 DAYNA_8390_MEM);
356 dev->mem_end = dev->mem_start +
357 mac8390_memsize(dev->mem_start);
358 break;
359 case MAC8390_INTERLAN:
360 dev->base_addr = (int)(board->slot_addr +
361 INTERLAN_8390_BASE);
362 dev->mem_start = (int)(board->slot_addr +
363 INTERLAN_8390_MEM);
364 dev->mem_end = dev->mem_start +
365 mac8390_memsize(dev->mem_start);
366 break;
367 case MAC8390_CABLETRON:
368 dev->base_addr = (int)(board->slot_addr +
369 CABLETRON_8390_BASE);
370 dev->mem_start = (int)(board->slot_addr +
371 CABLETRON_8390_MEM);
372 /* The base address is unreadable if 0x00
373 * has been written to the command register
374 * Reset the chip by writing E8390_NODMA +
375 * E8390_PAGE0 + E8390_STOP just to be
376 * sure
377 */
378 i = (void *)dev->base_addr;
379 *i = 0x21;
380 dev->mem_end = dev->mem_start +
381 mac8390_memsize(dev->mem_start);
382 break;
383
384 default:
385 dev_err(&board->dev,
386 "No known base address for card type\n");
387 return false;
388 }
389 }
390
391 return true;
392 }
393
394 static int mac8390_device_probe(struct nubus_board *board)
395 {
396 struct net_device *dev;
397 int err = -ENODEV;
398 struct nubus_rsrc *fres;
399 enum mac8390_type cardtype = MAC8390_NONE;
400
401 dev = ____alloc_ei_netdev(0);
402 if (!dev)
403 return -ENOMEM;
404
405 SET_NETDEV_DEV(dev, &board->dev);
406
407 for_each_board_func_rsrc(board, fres) {
408 if (fres->category != NUBUS_CAT_NETWORK ||
409 fres->type != NUBUS_TYPE_ETHERNET)
410 continue;
411
412 cardtype = mac8390_ident(fres);
413 if (cardtype == MAC8390_NONE)
414 continue;
415
416 if (mac8390_rsrc_init(dev, fres, cardtype))
417 break;
418 }
419 if (!fres)
420 goto out;
421
422 err = mac8390_initdev(dev, board, cardtype);
423 if (err)
424 goto out;
425
426 err = register_netdev(dev);
427 if (err)
428 goto out;
429
430 nubus_set_drvdata(board, dev);
431 return 0;
432
433 out:
434 free_netdev(dev);
435 return err;
436 }
437
438 static int mac8390_device_remove(struct nubus_board *board)
439 {
440 struct net_device *dev = nubus_get_drvdata(board);
441
442 unregister_netdev(dev);
443 free_netdev(dev);
444 return 0;
445 }
446
447 static struct nubus_driver mac8390_driver = {
448 .probe = mac8390_device_probe,
449 .remove = mac8390_device_remove,
450 .driver = {
451 .name = KBUILD_MODNAME,
452 .owner = THIS_MODULE,
453 }
454 };
455
456 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
457 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
458 MODULE_LICENSE("GPL");
459
460 static int __init mac8390_init(void)
461 {
462 return nubus_driver_register(&mac8390_driver);
463 }
464 module_init(mac8390_init);
465
466 static void __exit mac8390_exit(void)
467 {
468 nubus_driver_unregister(&mac8390_driver);
469 }
470 module_exit(mac8390_exit);
471
472 static const struct net_device_ops mac8390_netdev_ops = {
473 .ndo_open = mac8390_open,
474 .ndo_stop = mac8390_close,
475 .ndo_start_xmit = __ei_start_xmit,
476 .ndo_tx_timeout = __ei_tx_timeout,
477 .ndo_get_stats = __ei_get_stats,
478 .ndo_set_rx_mode = __ei_set_multicast_list,
479 .ndo_validate_addr = eth_validate_addr,
480 .ndo_set_mac_address = eth_mac_addr,
481 #ifdef CONFIG_NET_POLL_CONTROLLER
482 .ndo_poll_controller = __ei_poll,
483 #endif
484 };
485
486 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board,
487 enum mac8390_type type)
488 {
489 static u32 fwrd4_offsets[16] = {
490 0, 4, 8, 12,
491 16, 20, 24, 28,
492 32, 36, 40, 44,
493 48, 52, 56, 60
494 };
495 static u32 back4_offsets[16] = {
496 60, 56, 52, 48,
497 44, 40, 36, 32,
498 28, 24, 20, 16,
499 12, 8, 4, 0
500 };
501 static u32 fwrd2_offsets[16] = {
502 0, 2, 4, 6,
503 8, 10, 12, 14,
504 16, 18, 20, 22,
505 24, 26, 28, 30
506 };
507
508 int access_bitmode = 0;
509
510 /* Now fill in our stuff */
511 dev->netdev_ops = &mac8390_netdev_ops;
512
513 /* GAR, ei_status is actually a macro even though it looks global */
514 ei_status.name = cardname[type];
515 ei_status.word16 = word16[type];
516
517 /* Cabletron's TX/RX buffers are backwards */
518 if (type == MAC8390_CABLETRON) {
519 ei_status.tx_start_page = CABLETRON_TX_START_PG;
520 ei_status.rx_start_page = CABLETRON_RX_START_PG;
521 ei_status.stop_page = CABLETRON_RX_STOP_PG;
522 ei_status.rmem_start = dev->mem_start;
523 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
524 } else {
525 ei_status.tx_start_page = WD_START_PG;
526 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
527 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
528 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
529 ei_status.rmem_end = dev->mem_end;
530 }
531
532 /* Fill in model-specific information and functions */
533 switch (type) {
534 case MAC8390_FARALLON:
535 case MAC8390_APPLE:
536 switch (mac8390_testio(dev->mem_start)) {
537 case ACCESS_UNKNOWN:
538 dev_err(&board->dev,
539 "Don't know how to access card memory\n");
540 return -ENODEV;
541
542 case ACCESS_16:
543 /* 16 bit card, register map is reversed */
544 ei_status.reset_8390 = mac8390_no_reset;
545 ei_status.block_input = slow_sane_block_input;
546 ei_status.block_output = slow_sane_block_output;
547 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
548 ei_status.reg_offset = back4_offsets;
549 break;
550
551 case ACCESS_32:
552 /* 32 bit card, register map is reversed */
553 ei_status.reset_8390 = mac8390_no_reset;
554 ei_status.block_input = sane_block_input;
555 ei_status.block_output = sane_block_output;
556 ei_status.get_8390_hdr = sane_get_8390_hdr;
557 ei_status.reg_offset = back4_offsets;
558 access_bitmode = 1;
559 break;
560 }
561 break;
562
563 case MAC8390_ASANTE:
564 /* Some Asante cards pass the 32 bit test
565 * but overwrite system memory when run at 32 bit.
566 * so we run them all at 16 bit.
567 */
568 ei_status.reset_8390 = mac8390_no_reset;
569 ei_status.block_input = slow_sane_block_input;
570 ei_status.block_output = slow_sane_block_output;
571 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
572 ei_status.reg_offset = back4_offsets;
573 break;
574
575 case MAC8390_CABLETRON:
576 /* 16 bit card, register map is short forward */
577 ei_status.reset_8390 = mac8390_no_reset;
578 ei_status.block_input = slow_sane_block_input;
579 ei_status.block_output = slow_sane_block_output;
580 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
581 ei_status.reg_offset = fwrd2_offsets;
582 break;
583
584 case MAC8390_DAYNA:
585 case MAC8390_KINETICS:
586 /* 16 bit memory, register map is forward */
587 /* dayna and similar */
588 ei_status.reset_8390 = mac8390_no_reset;
589 ei_status.block_input = dayna_block_input;
590 ei_status.block_output = dayna_block_output;
591 ei_status.get_8390_hdr = dayna_get_8390_hdr;
592 ei_status.reg_offset = fwrd4_offsets;
593 break;
594
595 case MAC8390_INTERLAN:
596 /* 16 bit memory, register map is forward */
597 ei_status.reset_8390 = interlan_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 = fwrd4_offsets;
602 break;
603
604 default:
605 dev_err(&board->dev, "Unsupported card type\n");
606 return -ENODEV;
607 }
608
609 __NS8390_init(dev, 0);
610
611 /* Good, done, now spit out some messages */
612 dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]);
613 dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
614 dev->dev_addr, dev->irq,
615 (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
616 dev->mem_start, access_bitmode ? 32 : 16);
617 return 0;
618 }
619
620 static int mac8390_open(struct net_device *dev)
621 {
622 int err;
623
624 __ei_open(dev);
625 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev);
626 if (err)
627 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq);
628 return err;
629 }
630
631 static int mac8390_close(struct net_device *dev)
632 {
633 free_irq(dev->irq, dev);
634 __ei_close(dev);
635 return 0;
636 }
637
638 static void mac8390_no_reset(struct net_device *dev)
639 {
640 struct ei_device *ei_local = netdev_priv(dev);
641
642 ei_status.txing = 0;
643 netif_info(ei_local, hw, dev, "reset not supported\n");
644 }
645
646 static void interlan_reset(struct net_device *dev)
647 {
648 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
649 struct ei_device *ei_local = netdev_priv(dev);
650
651 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...",
652 jiffies);
653 ei_status.txing = 0;
654 target[0xC0000] = 0;
655 if (netif_msg_hw(ei_local))
656 pr_cont("reset complete\n");
657 }
658
659 /* dayna_memcpy_fromio/dayna_memcpy_toio */
660 /* directly from daynaport.c by Alan Cox */
661 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
662 int count)
663 {
664 volatile unsigned char *ptr;
665 unsigned char *target = to;
666 from <<= 1; /* word, skip overhead */
667 ptr = (unsigned char *)(dev->mem_start+from);
668 /* Leading byte? */
669 if (from & 2) {
670 *target++ = ptr[-1];
671 ptr += 2;
672 count--;
673 }
674 while (count >= 2) {
675 *(unsigned short *)target = *(unsigned short volatile *)ptr;
676 ptr += 4; /* skip cruft */
677 target += 2;
678 count -= 2;
679 }
680 /* Trailing byte? */
681 if (count)
682 *target = *ptr;
683 }
684
685 static void dayna_memcpy_tocard(struct net_device *dev, int to,
686 const void *from, int count)
687 {
688 volatile unsigned short *ptr;
689 const unsigned char *src = from;
690 to <<= 1; /* word, skip overhead */
691 ptr = (unsigned short *)(dev->mem_start+to);
692 /* Leading byte? */
693 if (to & 2) { /* avoid a byte write (stomps on other data) */
694 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
695 ptr++;
696 count--;
697 }
698 while (count >= 2) {
699 *ptr++ = *(unsigned short *)src; /* Copy and */
700 ptr++; /* skip cruft */
701 src += 2;
702 count -= 2;
703 }
704 /* Trailing byte? */
705 if (count) {
706 /* card doesn't like byte writes */
707 *ptr = (*ptr & 0x00FF) | (*src << 8);
708 }
709 }
710
711 /* sane block input/output */
712 static void sane_get_8390_hdr(struct net_device *dev,
713 struct e8390_pkt_hdr *hdr, int ring_page)
714 {
715 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
716 memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4);
717 /* Fix endianness */
718 hdr->count = swab16(hdr->count);
719 }
720
721 static void sane_block_input(struct net_device *dev, int count,
722 struct sk_buff *skb, int ring_offset)
723 {
724 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
725 unsigned long xfer_start = xfer_base + dev->mem_start;
726
727 if (xfer_start + count > ei_status.rmem_end) {
728 /* We must wrap the input move. */
729 int semi_count = ei_status.rmem_end - xfer_start;
730 memcpy_fromio(skb->data,
731 (void __iomem *)dev->mem_start + xfer_base,
732 semi_count);
733 count -= semi_count;
734 memcpy_fromio(skb->data + semi_count,
735 (void __iomem *)ei_status.rmem_start, count);
736 } else {
737 memcpy_fromio(skb->data,
738 (void __iomem *)dev->mem_start + xfer_base,
739 count);
740 }
741 }
742
743 static void sane_block_output(struct net_device *dev, int count,
744 const unsigned char *buf, int start_page)
745 {
746 long shmem = (start_page - WD_START_PG)<<8;
747
748 memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count);
749 }
750
751 /* dayna block input/output */
752 static void dayna_get_8390_hdr(struct net_device *dev,
753 struct e8390_pkt_hdr *hdr, int ring_page)
754 {
755 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
756
757 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
758 /* Fix endianness */
759 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
760 }
761
762 static void dayna_block_input(struct net_device *dev, int count,
763 struct sk_buff *skb, int ring_offset)
764 {
765 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
766 unsigned long xfer_start = xfer_base+dev->mem_start;
767
768 /* Note the offset math is done in card memory space which is word
769 per long onto our space. */
770
771 if (xfer_start + count > ei_status.rmem_end) {
772 /* We must wrap the input move. */
773 int semi_count = ei_status.rmem_end - xfer_start;
774 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
775 count -= semi_count;
776 dayna_memcpy_fromcard(dev, skb->data + semi_count,
777 ei_status.rmem_start - dev->mem_start,
778 count);
779 } else {
780 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
781 }
782 }
783
784 static void dayna_block_output(struct net_device *dev, int count,
785 const unsigned char *buf,
786 int start_page)
787 {
788 long shmem = (start_page - WD_START_PG)<<8;
789
790 dayna_memcpy_tocard(dev, shmem, buf, count);
791 }
792
793 /* Cabletron block I/O */
794 static void slow_sane_get_8390_hdr(struct net_device *dev,
795 struct e8390_pkt_hdr *hdr,
796 int ring_page)
797 {
798 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
799 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4);
800 /* Register endianism - fix here rather than 8390.c */
801 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
802 }
803
804 static void slow_sane_block_input(struct net_device *dev, int count,
805 struct sk_buff *skb, int ring_offset)
806 {
807 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
808 unsigned long xfer_start = xfer_base+dev->mem_start;
809
810 if (xfer_start + count > ei_status.rmem_end) {
811 /* We must wrap the input move. */
812 int semi_count = ei_status.rmem_end - xfer_start;
813 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
814 semi_count);
815 count -= semi_count;
816 word_memcpy_fromcard(skb->data + semi_count,
817 ei_status.rmem_start, count);
818 } else {
819 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
820 count);
821 }
822 }
823
824 static void slow_sane_block_output(struct net_device *dev, int count,
825 const unsigned char *buf, int start_page)
826 {
827 long shmem = (start_page - WD_START_PG)<<8;
828
829 word_memcpy_tocard(dev->mem_start + shmem, buf, count);
830 }
831
832 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count)
833 {
834 volatile unsigned short *to = (void *)tp;
835 const unsigned short *from = fp;
836
837 count++;
838 count /= 2;
839
840 while (count--)
841 *to++ = *from++;
842 }
843
844 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count)
845 {
846 unsigned short *to = tp;
847 const volatile unsigned short *from = (const void *)fp;
848
849 count++;
850 count /= 2;
851
852 while (count--)
853 *to++ = *from++;
854 }
855
856
Linux with added FPC-III support