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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[deliverable/linux.git] / drivers / net / ethernet / 8390 / mac8390.c
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 static u32 mac8390_msg_enable;
171
172 static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
173 {
174 switch (dev->dr_sw) {
175 case NUBUS_DRSW_3COM:
176 switch (dev->dr_hw) {
177 case NUBUS_DRHW_APPLE_SONIC_NB:
178 case NUBUS_DRHW_APPLE_SONIC_LC:
179 case NUBUS_DRHW_SONNET:
180 return MAC8390_NONE;
181 default:
182 return MAC8390_APPLE;
183 }
184 break;
185
186 case NUBUS_DRSW_APPLE:
187 switch (dev->dr_hw) {
188 case NUBUS_DRHW_ASANTE_LC:
189 return MAC8390_NONE;
190 case NUBUS_DRHW_CABLETRON:
191 return MAC8390_CABLETRON;
192 default:
193 return MAC8390_APPLE;
194 }
195 break;
196
197 case NUBUS_DRSW_ASANTE:
198 return MAC8390_ASANTE;
199 break;
200
201 case NUBUS_DRSW_TECHWORKS:
202 case NUBUS_DRSW_DAYNA2:
203 case NUBUS_DRSW_DAYNA_LC:
204 if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
205 return MAC8390_CABLETRON;
206 else
207 return MAC8390_APPLE;
208 break;
209
210 case NUBUS_DRSW_FARALLON:
211 return MAC8390_FARALLON;
212 break;
213
214 case NUBUS_DRSW_KINETICS:
215 switch (dev->dr_hw) {
216 case NUBUS_DRHW_INTERLAN:
217 return MAC8390_INTERLAN;
218 default:
219 return MAC8390_KINETICS;
220 }
221 break;
222
223 case NUBUS_DRSW_DAYNA:
224 /*
225 * These correspond to Dayna Sonic cards
226 * which use the macsonic driver
227 */
228 if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
229 dev->dr_hw == NUBUS_DRHW_INTERLAN)
230 return MAC8390_NONE;
231 else
232 return MAC8390_DAYNA;
233 break;
234 }
235 return MAC8390_NONE;
236 }
237
238 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
239 {
240 unsigned long outdata = 0xA5A0B5B0;
241 unsigned long indata = 0x00000000;
242 /* Try writing 32 bits */
243 memcpy_toio(membase, &outdata, 4);
244 /* Now compare them */
245 if (memcmp_withio(&outdata, membase, 4) == 0)
246 return ACCESS_32;
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 return ACCESS_UNKNOWN;
254 }
255
256 static int __init mac8390_memsize(unsigned long membase)
257 {
258 unsigned long flags;
259 int i, j;
260
261 local_irq_save(flags);
262 /* Check up to 32K in 4K increments */
263 for (i = 0; i < 8; i++) {
264 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
265
266 /* Unwriteable - we have a fully decoded card and the
267 RAM end located */
268 if (hwreg_present(m) == 0)
269 break;
270
271 /* write a distinctive byte */
272 *m = 0xA5A0 | i;
273 /* check that we read back what we wrote */
274 if (*m != (0xA5A0 | i))
275 break;
276
277 /* check for partial decode and wrap */
278 for (j = 0; j < i; j++) {
279 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
280 if (*p != (0xA5A0 | j))
281 break;
282 }
283 }
284 local_irq_restore(flags);
285 /*
286 * in any case, we stopped once we tried one block too many,
287 * or once we reached 32K
288 */
289 return i * 0x1000;
290 }
291
292 static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
293 enum mac8390_type cardtype)
294 {
295 struct nubus_dir dir;
296 struct nubus_dirent ent;
297 int offset;
298 volatile unsigned short *i;
299
300 printk_once(KERN_INFO pr_fmt("%s"), version);
301
302 dev->irq = SLOT2IRQ(ndev->board->slot);
303 /* This is getting to be a habit */
304 dev->base_addr = (ndev->board->slot_addr |
305 ((ndev->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(ndev, &dir) == -1) {
313 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n",
314 dev->name, ndev->board->slot);
315 return false;
316 }
317
318 /* Get the MAC address */
319 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
320 pr_info("%s: Couldn't get MAC address!\n", dev->name);
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 pr_err("%s: Memory offset resource for slot %X not found!\n",
331 dev->name, ndev->board->slot);
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 pr_info("%s: Memory length resource for slot %X not found, probing\n",
342 dev->name, ndev->board->slot);
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)(ndev->board->slot_addr +
353 DAYNA_8390_BASE);
354 dev->mem_start = (int)(ndev->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)(ndev->board->slot_addr +
361 INTERLAN_8390_BASE);
362 dev->mem_start = (int)(ndev->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)(ndev->board->slot_addr +
369 CABLETRON_8390_BASE);
370 dev->mem_start = (int)(ndev->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 pr_err("Card type %s is unsupported, sorry\n",
386 ndev->board->name);
387 return false;
388 }
389 }
390
391 return true;
392 }
393
394 struct net_device * __init mac8390_probe(int unit)
395 {
396 struct net_device *dev;
397 struct nubus_dev *ndev = NULL;
398 int err = -ENODEV;
399 struct ei_device *ei_local;
400
401 static unsigned int slots;
402
403 enum mac8390_type cardtype;
404
405 /* probably should check for Nubus instead */
406
407 if (!MACH_IS_MAC)
408 return ERR_PTR(-ENODEV);
409
410 dev = ____alloc_ei_netdev(0);
411 if (!dev)
412 return ERR_PTR(-ENOMEM);
413
414 if (unit >= 0)
415 sprintf(dev->name, "eth%d", unit);
416
417 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET,
418 ndev))) {
419 /* Have we seen it already? */
420 if (slots & (1 << ndev->board->slot))
421 continue;
422 slots |= 1 << ndev->board->slot;
423
424 cardtype = mac8390_ident(ndev);
425 if (cardtype == MAC8390_NONE)
426 continue;
427
428 if (!mac8390_init(dev, ndev, cardtype))
429 continue;
430
431 /* Do the nasty 8390 stuff */
432 if (!mac8390_initdev(dev, ndev, cardtype))
433 break;
434 }
435
436 if (!ndev)
437 goto out;
438
439 ei_local = netdev_priv(dev);
440 ei_local->msg_enable = mac8390_msg_enable;
441
442 err = register_netdev(dev);
443 if (err)
444 goto out;
445 return dev;
446
447 out:
448 free_netdev(dev);
449 return ERR_PTR(err);
450 }
451
452 #ifdef MODULE
453 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
454 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
455 MODULE_LICENSE("GPL");
456
457 static struct net_device *dev_mac8390;
458
459 int __init init_module(void)
460 {
461 dev_mac8390 = mac8390_probe(-1);
462 if (IS_ERR(dev_mac8390)) {
463 pr_warn("mac8390: No card found\n");
464 return PTR_ERR(dev_mac8390);
465 }
466 return 0;
467 }
468
469 void __exit cleanup_module(void)
470 {
471 unregister_netdev(dev_mac8390);
472 free_netdev(dev_mac8390);
473 }
474
475 #endif /* MODULE */
476
477 static const struct net_device_ops mac8390_netdev_ops = {
478 .ndo_open = mac8390_open,
479 .ndo_stop = mac8390_close,
480 .ndo_start_xmit = __ei_start_xmit,
481 .ndo_tx_timeout = __ei_tx_timeout,
482 .ndo_get_stats = __ei_get_stats,
483 .ndo_set_rx_mode = __ei_set_multicast_list,
484 .ndo_validate_addr = eth_validate_addr,
485 .ndo_set_mac_address = eth_mac_addr,
486 .ndo_change_mtu = eth_change_mtu,
487 #ifdef CONFIG_NET_POLL_CONTROLLER
488 .ndo_poll_controller = __ei_poll,
489 #endif
490 };
491
492 static int __init mac8390_initdev(struct net_device *dev,
493 struct nubus_dev *ndev,
494 enum mac8390_type type)
495 {
496 static u32 fwrd4_offsets[16] = {
497 0, 4, 8, 12,
498 16, 20, 24, 28,
499 32, 36, 40, 44,
500 48, 52, 56, 60
501 };
502 static u32 back4_offsets[16] = {
503 60, 56, 52, 48,
504 44, 40, 36, 32,
505 28, 24, 20, 16,
506 12, 8, 4, 0
507 };
508 static u32 fwrd2_offsets[16] = {
509 0, 2, 4, 6,
510 8, 10, 12, 14,
511 16, 18, 20, 22,
512 24, 26, 28, 30
513 };
514
515 int access_bitmode = 0;
516
517 /* Now fill in our stuff */
518 dev->netdev_ops = &mac8390_netdev_ops;
519
520 /* GAR, ei_status is actually a macro even though it looks global */
521 ei_status.name = cardname[type];
522 ei_status.word16 = word16[type];
523
524 /* Cabletron's TX/RX buffers are backwards */
525 if (type == MAC8390_CABLETRON) {
526 ei_status.tx_start_page = CABLETRON_TX_START_PG;
527 ei_status.rx_start_page = CABLETRON_RX_START_PG;
528 ei_status.stop_page = CABLETRON_RX_STOP_PG;
529 ei_status.rmem_start = dev->mem_start;
530 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
531 } else {
532 ei_status.tx_start_page = WD_START_PG;
533 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
534 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
535 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
536 ei_status.rmem_end = dev->mem_end;
537 }
538
539 /* Fill in model-specific information and functions */
540 switch (type) {
541 case MAC8390_FARALLON:
542 case MAC8390_APPLE:
543 switch (mac8390_testio(dev->mem_start)) {
544 case ACCESS_UNKNOWN:
545 pr_err("Don't know how to access card memory!\n");
546 return -ENODEV;
547
548 case ACCESS_16:
549 /* 16 bit card, register map is reversed */
550 ei_status.reset_8390 = mac8390_no_reset;
551 ei_status.block_input = slow_sane_block_input;
552 ei_status.block_output = slow_sane_block_output;
553 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
554 ei_status.reg_offset = back4_offsets;
555 break;
556
557 case ACCESS_32:
558 /* 32 bit card, register map is reversed */
559 ei_status.reset_8390 = mac8390_no_reset;
560 ei_status.block_input = sane_block_input;
561 ei_status.block_output = sane_block_output;
562 ei_status.get_8390_hdr = sane_get_8390_hdr;
563 ei_status.reg_offset = back4_offsets;
564 access_bitmode = 1;
565 break;
566 }
567 break;
568
569 case MAC8390_ASANTE:
570 /* Some Asante cards pass the 32 bit test
571 * but overwrite system memory when run at 32 bit.
572 * so we run them all at 16 bit.
573 */
574 ei_status.reset_8390 = mac8390_no_reset;
575 ei_status.block_input = slow_sane_block_input;
576 ei_status.block_output = slow_sane_block_output;
577 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
578 ei_status.reg_offset = back4_offsets;
579 break;
580
581 case MAC8390_CABLETRON:
582 /* 16 bit card, register map is short forward */
583 ei_status.reset_8390 = mac8390_no_reset;
584 ei_status.block_input = slow_sane_block_input;
585 ei_status.block_output = slow_sane_block_output;
586 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
587 ei_status.reg_offset = fwrd2_offsets;
588 break;
589
590 case MAC8390_DAYNA:
591 case MAC8390_KINETICS:
592 /* 16 bit memory, register map is forward */
593 /* dayna and similar */
594 ei_status.reset_8390 = mac8390_no_reset;
595 ei_status.block_input = dayna_block_input;
596 ei_status.block_output = dayna_block_output;
597 ei_status.get_8390_hdr = dayna_get_8390_hdr;
598 ei_status.reg_offset = fwrd4_offsets;
599 break;
600
601 case MAC8390_INTERLAN:
602 /* 16 bit memory, register map is forward */
603 ei_status.reset_8390 = interlan_reset;
604 ei_status.block_input = slow_sane_block_input;
605 ei_status.block_output = slow_sane_block_output;
606 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
607 ei_status.reg_offset = fwrd4_offsets;
608 break;
609
610 default:
611 pr_err("Card type %s is unsupported, sorry\n",
612 ndev->board->name);
613 return -ENODEV;
614 }
615
616 __NS8390_init(dev, 0);
617
618 /* Good, done, now spit out some messages */
619 pr_info("%s: %s in slot %X (type %s)\n",
620 dev->name, ndev->board->name, ndev->board->slot,
621 cardname[type]);
622 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
623 dev->dev_addr, dev->irq,
624 (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
625 dev->mem_start, access_bitmode ? 32 : 16);
626 return 0;
627 }
628
629 static int mac8390_open(struct net_device *dev)
630 {
631 int err;
632
633 __ei_open(dev);
634 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev);
635 if (err)
636 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq);
637 return err;
638 }
639
640 static int mac8390_close(struct net_device *dev)
641 {
642 free_irq(dev->irq, dev);
643 __ei_close(dev);
644 return 0;
645 }
646
647 static void mac8390_no_reset(struct net_device *dev)
648 {
649 struct ei_device *ei_local = netdev_priv(dev);
650
651 ei_status.txing = 0;
652 netif_info(ei_local, hw, dev, "reset not supported\n");
653 }
654
655 static void interlan_reset(struct net_device *dev)
656 {
657 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
658 struct ei_device *ei_local = netdev_priv(dev);
659
660 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...",
661 jiffies);
662 ei_status.txing = 0;
663 target[0xC0000] = 0;
664 if (netif_msg_hw(ei_local))
665 pr_cont("reset complete\n");
666 }
667
668 /* dayna_memcpy_fromio/dayna_memcpy_toio */
669 /* directly from daynaport.c by Alan Cox */
670 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
671 int count)
672 {
673 volatile unsigned char *ptr;
674 unsigned char *target = to;
675 from <<= 1; /* word, skip overhead */
676 ptr = (unsigned char *)(dev->mem_start+from);
677 /* Leading byte? */
678 if (from & 2) {
679 *target++ = ptr[-1];
680 ptr += 2;
681 count--;
682 }
683 while (count >= 2) {
684 *(unsigned short *)target = *(unsigned short volatile *)ptr;
685 ptr += 4; /* skip cruft */
686 target += 2;
687 count -= 2;
688 }
689 /* Trailing byte? */
690 if (count)
691 *target = *ptr;
692 }
693
694 static void dayna_memcpy_tocard(struct net_device *dev, int to,
695 const void *from, int count)
696 {
697 volatile unsigned short *ptr;
698 const unsigned char *src = from;
699 to <<= 1; /* word, skip overhead */
700 ptr = (unsigned short *)(dev->mem_start+to);
701 /* Leading byte? */
702 if (to & 2) { /* avoid a byte write (stomps on other data) */
703 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
704 ptr++;
705 count--;
706 }
707 while (count >= 2) {
708 *ptr++ = *(unsigned short *)src; /* Copy and */
709 ptr++; /* skip cruft */
710 src += 2;
711 count -= 2;
712 }
713 /* Trailing byte? */
714 if (count) {
715 /* card doesn't like byte writes */
716 *ptr = (*ptr & 0x00FF) | (*src << 8);
717 }
718 }
719
720 /* sane block input/output */
721 static void sane_get_8390_hdr(struct net_device *dev,
722 struct e8390_pkt_hdr *hdr, int ring_page)
723 {
724 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
725 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4);
726 /* Fix endianness */
727 hdr->count = swab16(hdr->count);
728 }
729
730 static void sane_block_input(struct net_device *dev, int count,
731 struct sk_buff *skb, int ring_offset)
732 {
733 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
734 unsigned long xfer_start = xfer_base + dev->mem_start;
735
736 if (xfer_start + count > ei_status.rmem_end) {
737 /* We must wrap the input move. */
738 int semi_count = ei_status.rmem_end - xfer_start;
739 memcpy_fromio(skb->data, dev->mem_start + xfer_base,
740 semi_count);
741 count -= semi_count;
742 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start,
743 count);
744 } else {
745 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count);
746 }
747 }
748
749 static void sane_block_output(struct net_device *dev, int count,
750 const unsigned char *buf, int start_page)
751 {
752 long shmem = (start_page - WD_START_PG)<<8;
753
754 memcpy_toio(dev->mem_start + shmem, buf, count);
755 }
756
757 /* dayna block input/output */
758 static void dayna_get_8390_hdr(struct net_device *dev,
759 struct e8390_pkt_hdr *hdr, int ring_page)
760 {
761 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
762
763 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
764 /* Fix endianness */
765 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
766 }
767
768 static void dayna_block_input(struct net_device *dev, int count,
769 struct sk_buff *skb, int ring_offset)
770 {
771 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
772 unsigned long xfer_start = xfer_base+dev->mem_start;
773
774 /* Note the offset math is done in card memory space which is word
775 per long onto our space. */
776
777 if (xfer_start + count > ei_status.rmem_end) {
778 /* We must wrap the input move. */
779 int semi_count = ei_status.rmem_end - xfer_start;
780 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
781 count -= semi_count;
782 dayna_memcpy_fromcard(dev, skb->data + semi_count,
783 ei_status.rmem_start - dev->mem_start,
784 count);
785 } else {
786 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
787 }
788 }
789
790 static void dayna_block_output(struct net_device *dev, int count,
791 const unsigned char *buf,
792 int start_page)
793 {
794 long shmem = (start_page - WD_START_PG)<<8;
795
796 dayna_memcpy_tocard(dev, shmem, buf, count);
797 }
798
799 /* Cabletron block I/O */
800 static void slow_sane_get_8390_hdr(struct net_device *dev,
801 struct e8390_pkt_hdr *hdr,
802 int ring_page)
803 {
804 unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
805 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4);
806 /* Register endianism - fix here rather than 8390.c */
807 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
808 }
809
810 static void slow_sane_block_input(struct net_device *dev, int count,
811 struct sk_buff *skb, int ring_offset)
812 {
813 unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
814 unsigned long xfer_start = xfer_base+dev->mem_start;
815
816 if (xfer_start + count > ei_status.rmem_end) {
817 /* We must wrap the input move. */
818 int semi_count = ei_status.rmem_end - xfer_start;
819 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
820 semi_count);
821 count -= semi_count;
822 word_memcpy_fromcard(skb->data + semi_count,
823 ei_status.rmem_start, count);
824 } else {
825 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
826 count);
827 }
828 }
829
830 static void slow_sane_block_output(struct net_device *dev, int count,
831 const unsigned char *buf, int start_page)
832 {
833 long shmem = (start_page - WD_START_PG)<<8;
834
835 word_memcpy_tocard(dev->mem_start + shmem, buf, count);
836 }
837
838 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count)
839 {
840 volatile unsigned short *to = (void *)tp;
841 const unsigned short *from = fp;
842
843 count++;
844 count /= 2;
845
846 while (count--)
847 *to++ = *from++;
848 }
849
850 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count)
851 {
852 unsigned short *to = tp;
853 const volatile unsigned short *from = (const void *)fp;
854
855 count++;
856 count /= 2;
857
858 while (count--)
859 *to++ = *from++;
860 }
861
862
Linux kernel - Deliverables
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