1 /*
2 * Linux ARCnet driver - COM20020 PCI support
3 * Contemporary Controls PCI20 and SOHARD SH-ARC PCI
4 *
5 * Written 1994-1999 by Avery Pennarun,
6 * based on an ISA version by David Woodhouse.
7 * Written 1999-2000 by Martin Mares <mj@ucw.cz>.
8 * Derived from skeleton.c by Donald Becker.
9 *
10 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
11 * for sponsoring the further development of this driver.
12 *
13 * **********************
14 *
15 * The original copyright of skeleton.c was as follows:
16 *
17 * skeleton.c Written 1993 by Donald Becker.
18 * Copyright 1993 United States Government as represented by the
19 * Director, National Security Agency. This software may only be used
20 * and distributed according to the terms of the GNU General Public License as
21 * modified by SRC, incorporated herein by reference.
22 *
23 * **********************
24 *
25 * For more details, see drivers/net/arcnet.c
26 *
27 * **********************
28 */
29
30 #define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
31
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/ioport.h>
37 #include <linux/errno.h>
38 #include <linux/netdevice.h>
39 #include <linux/init.h>
40 #include <linux/interrupt.h>
41 #include <linux/pci.h>
42 #include <linux/list.h>
43 #include <linux/io.h>
44 #include <linux/leds.h>
45
46 #include "arcdevice.h"
47 #include "com20020.h"
48
49 /* Module parameters */
50
51 static int node;
52 static char device[9]; /* use eg. device="arc1" to change name */
53 static int timeout = 3;
54 static int backplane;
55 static int clockp;
56 static int clockm;
57
58 module_param(node, int, 0);
59 module_param_string(device, device, sizeof(device), 0);
60 module_param(timeout, int, 0);
61 module_param(backplane, int, 0);
62 module_param(clockp, int, 0);
63 module_param(clockm, int, 0);
64 MODULE_LICENSE("GPL");
65
led_tx_set(struct led_classdev * led_cdev,enum led_brightness value)66 static void led_tx_set(struct led_classdev *led_cdev,
67 enum led_brightness value)
68 {
69 struct com20020_dev *card;
70 struct com20020_priv *priv;
71 struct com20020_pci_card_info *ci;
72
73 card = container_of(led_cdev, struct com20020_dev, tx_led);
74
75 priv = card->pci_priv;
76 ci = priv->ci;
77
78 outb(!!value, priv->misc + ci->leds[card->index].green);
79 }
80
led_recon_set(struct led_classdev * led_cdev,enum led_brightness value)81 static void led_recon_set(struct led_classdev *led_cdev,
82 enum led_brightness value)
83 {
84 struct com20020_dev *card;
85 struct com20020_priv *priv;
86 struct com20020_pci_card_info *ci;
87
88 card = container_of(led_cdev, struct com20020_dev, recon_led);
89
90 priv = card->pci_priv;
91 ci = priv->ci;
92
93 outb(!!value, priv->misc + ci->leds[card->index].red);
94 }
95
backplane_mode_show(struct device * dev,struct device_attribute * attr,char * buf)96 static ssize_t backplane_mode_show(struct device *dev,
97 struct device_attribute *attr,
98 char *buf)
99 {
100 struct net_device *net_dev = to_net_dev(dev);
101 struct arcnet_local *lp = netdev_priv(net_dev);
102
103 return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
104 }
105 static DEVICE_ATTR_RO(backplane_mode);
106
107 static struct attribute *com20020_state_attrs[] = {
108 &dev_attr_backplane_mode.attr,
109 NULL,
110 };
111
112 static const struct attribute_group com20020_state_group = {
113 .name = NULL,
114 .attrs = com20020_state_attrs,
115 };
116
117 static void com20020pci_remove(struct pci_dev *pdev);
118
com20020pci_probe(struct pci_dev * pdev,const struct pci_device_id * id)119 static int com20020pci_probe(struct pci_dev *pdev,
120 const struct pci_device_id *id)
121 {
122 struct com20020_pci_card_info *ci;
123 struct com20020_pci_channel_map *mm;
124 struct net_device *dev;
125 struct arcnet_local *lp;
126 struct com20020_priv *priv;
127 int i, ioaddr, ret;
128 struct resource *r;
129
130 ret = 0;
131
132 if (pci_enable_device(pdev))
133 return -EIO;
134
135 priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
136 GFP_KERNEL);
137 if (!priv)
138 return -ENOMEM;
139
140 ci = (struct com20020_pci_card_info *)id->driver_data;
141 if (!ci)
142 return -EINVAL;
143
144 priv->ci = ci;
145 mm = &ci->misc_map;
146
147 pci_set_drvdata(pdev, priv);
148
149 INIT_LIST_HEAD(&priv->list_dev);
150
151 if (mm->size) {
152 ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
153 r = devm_request_region(&pdev->dev, ioaddr, mm->size,
154 "com20020-pci");
155 if (!r) {
156 pr_err("IO region %xh-%xh already allocated.\n",
157 ioaddr, ioaddr + mm->size - 1);
158 return -EBUSY;
159 }
160 priv->misc = ioaddr;
161 }
162
163 for (i = 0; i < ci->devcount; i++) {
164 struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
165 struct com20020_dev *card;
166 int dev_id_mask = 0xf;
167
168 dev = alloc_arcdev(device);
169 if (!dev) {
170 ret = -ENOMEM;
171 break;
172 }
173 dev->dev_port = i;
174
175 dev->netdev_ops = &com20020_netdev_ops;
176
177 lp = netdev_priv(dev);
178
179 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
180 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
181
182 r = devm_request_region(&pdev->dev, ioaddr, cm->size,
183 "com20020-pci");
184 if (!r) {
185 pr_err("IO region %xh-%xh already allocated\n",
186 ioaddr, ioaddr + cm->size - 1);
187 ret = -EBUSY;
188 goto err_free_arcdev;
189 }
190
191 /* Dummy access after Reset
192 * ARCNET controller needs
193 * this access to detect bustype
194 */
195 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
196 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
197
198 SET_NETDEV_DEV(dev, &pdev->dev);
199 dev->base_addr = ioaddr;
200 arcnet_set_addr(dev, node);
201 dev->sysfs_groups[0] = &com20020_state_group;
202 dev->irq = pdev->irq;
203 lp->card_name = "PCI COM20020";
204 lp->card_flags = ci->flags;
205 lp->backplane = backplane;
206 lp->clockp = clockp & 7;
207 lp->clockm = clockm & 3;
208 lp->timeout = timeout;
209 lp->hw.owner = THIS_MODULE;
210
211 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
212
213 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
214 lp->backplane = 1;
215
216 if (ci->flags & ARC_HAS_ROTARY) {
217 /* Get the dev_id from the PLX rotary coder */
218 if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
219 dev_id_mask = 0x3;
220 dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
221 snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
222 }
223
224 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
225 pr_err("IO address %Xh is empty!\n", ioaddr);
226 ret = -EIO;
227 goto err_free_arcdev;
228 }
229 if (com20020_check(dev)) {
230 ret = -EIO;
231 goto err_free_arcdev;
232 }
233
234 ret = com20020_found(dev, IRQF_SHARED);
235 if (ret)
236 goto err_free_arcdev;
237
238 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
239 GFP_KERNEL);
240 if (!card) {
241 ret = -ENOMEM;
242 goto err_free_arcdev;
243 }
244
245 card->index = i;
246 card->pci_priv = priv;
247
248 if (ci->flags & ARC_HAS_LED) {
249 card->tx_led.brightness_set = led_tx_set;
250 card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
251 GFP_KERNEL, "arc%d-%d-tx",
252 dev->dev_id, i);
253 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
254 "pci:green:tx:%d-%d",
255 dev->dev_id, i);
256
257 card->tx_led.dev = &dev->dev;
258 card->recon_led.brightness_set = led_recon_set;
259 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
260 GFP_KERNEL, "arc%d-%d-recon",
261 dev->dev_id, i);
262 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
263 "pci:red:recon:%d-%d",
264 dev->dev_id, i);
265 card->recon_led.dev = &dev->dev;
266
267 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
268 if (ret)
269 goto err_free_arcdev;
270
271 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
272 if (ret)
273 goto err_free_arcdev;
274
275 dev_set_drvdata(&dev->dev, card);
276 devm_arcnet_led_init(dev, dev->dev_id, i);
277 }
278
279 card->dev = dev;
280 list_add(&card->list, &priv->list_dev);
281 continue;
282
283 err_free_arcdev:
284 free_arcdev(dev);
285 break;
286 }
287 if (ret)
288 com20020pci_remove(pdev);
289 return ret;
290 }
291
com20020pci_remove(struct pci_dev * pdev)292 static void com20020pci_remove(struct pci_dev *pdev)
293 {
294 struct com20020_dev *card, *tmpcard;
295 struct com20020_priv *priv;
296
297 priv = pci_get_drvdata(pdev);
298
299 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
300 struct net_device *dev = card->dev;
301
302 unregister_netdev(dev);
303 free_irq(dev->irq, dev);
304 free_arcdev(dev);
305 }
306 }
307
308 static struct com20020_pci_card_info card_info_10mbit = {
309 .name = "ARC-PCI",
310 .devcount = 1,
311 .chan_map_tbl = {
312 {
313 .bar = 2,
314 .offset = 0x00,
315 .size = 0x08,
316 },
317 },
318 .flags = ARC_CAN_10MBIT,
319 };
320
321 static struct com20020_pci_card_info card_info_5mbit = {
322 .name = "ARC-PCI",
323 .devcount = 1,
324 .chan_map_tbl = {
325 {
326 .bar = 2,
327 .offset = 0x00,
328 .size = 0x08,
329 },
330 },
331 .flags = ARC_IS_5MBIT,
332 };
333
334 static struct com20020_pci_card_info card_info_sohard = {
335 .name = "SOHARD SH ARC-PCI",
336 .devcount = 1,
337 /* SOHARD needs PCI base addr 4 */
338 .chan_map_tbl = {
339 {
340 .bar = 4,
341 .offset = 0x00,
342 .size = 0x08
343 },
344 },
345 .flags = ARC_CAN_10MBIT,
346 };
347
348 static struct com20020_pci_card_info card_info_eae_arc1 = {
349 .name = "EAE PLX-PCI ARC1",
350 .devcount = 1,
351 .chan_map_tbl = {
352 {
353 .bar = 2,
354 .offset = 0x00,
355 .size = 0x08,
356 },
357 },
358 .misc_map = {
359 .bar = 2,
360 .offset = 0x10,
361 .size = 0x04,
362 },
363 .leds = {
364 {
365 .green = 0x0,
366 .red = 0x1,
367 },
368 },
369 .rotary = 0x0,
370 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
371 };
372
373 static struct com20020_pci_card_info card_info_eae_ma1 = {
374 .name = "EAE PLX-PCI MA1",
375 .devcount = 2,
376 .chan_map_tbl = {
377 {
378 .bar = 2,
379 .offset = 0x00,
380 .size = 0x08,
381 }, {
382 .bar = 2,
383 .offset = 0x08,
384 .size = 0x08,
385 }
386 },
387 .misc_map = {
388 .bar = 2,
389 .offset = 0x10,
390 .size = 0x04,
391 },
392 .leds = {
393 {
394 .green = 0x0,
395 .red = 0x1,
396 }, {
397 .green = 0x2,
398 .red = 0x3,
399 },
400 },
401 .rotary = 0x0,
402 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
403 };
404
405 static struct com20020_pci_card_info card_info_eae_fb2 = {
406 .name = "EAE PLX-PCI FB2",
407 .devcount = 1,
408 .chan_map_tbl = {
409 {
410 .bar = 2,
411 .offset = 0x00,
412 .size = 0x08,
413 },
414 },
415 .misc_map = {
416 .bar = 2,
417 .offset = 0x10,
418 .size = 0x04,
419 },
420 .leds = {
421 {
422 .green = 0x0,
423 .red = 0x1,
424 },
425 },
426 .rotary = 0x0,
427 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
428 };
429
430 static const struct pci_device_id com20020pci_id_table[] = {
431 {
432 0x1571, 0xa001,
433 PCI_ANY_ID, PCI_ANY_ID,
434 0, 0,
435 0,
436 },
437 {
438 0x1571, 0xa002,
439 PCI_ANY_ID, PCI_ANY_ID,
440 0, 0,
441 0,
442 },
443 {
444 0x1571, 0xa003,
445 PCI_ANY_ID, PCI_ANY_ID,
446 0, 0,
447 0
448 },
449 {
450 0x1571, 0xa004,
451 PCI_ANY_ID, PCI_ANY_ID,
452 0, 0,
453 0,
454 },
455 {
456 0x1571, 0xa005,
457 PCI_ANY_ID, PCI_ANY_ID,
458 0, 0,
459 0
460 },
461 {
462 0x1571, 0xa006,
463 PCI_ANY_ID, PCI_ANY_ID,
464 0, 0,
465 0
466 },
467 {
468 0x1571, 0xa007,
469 PCI_ANY_ID, PCI_ANY_ID,
470 0, 0,
471 0
472 },
473 {
474 0x1571, 0xa008,
475 PCI_ANY_ID, PCI_ANY_ID,
476 0, 0,
477 0
478 },
479 {
480 0x1571, 0xa009,
481 PCI_ANY_ID, PCI_ANY_ID,
482 0, 0,
483 (kernel_ulong_t)&card_info_5mbit
484 },
485 {
486 0x1571, 0xa00a,
487 PCI_ANY_ID, PCI_ANY_ID,
488 0, 0,
489 (kernel_ulong_t)&card_info_5mbit
490 },
491 {
492 0x1571, 0xa00b,
493 PCI_ANY_ID, PCI_ANY_ID,
494 0, 0,
495 (kernel_ulong_t)&card_info_5mbit
496 },
497 {
498 0x1571, 0xa00c,
499 PCI_ANY_ID, PCI_ANY_ID,
500 0, 0,
501 (kernel_ulong_t)&card_info_5mbit
502 },
503 {
504 0x1571, 0xa00d,
505 PCI_ANY_ID, PCI_ANY_ID,
506 0, 0,
507 (kernel_ulong_t)&card_info_5mbit
508 },
509 {
510 0x1571, 0xa00e,
511 PCI_ANY_ID, PCI_ANY_ID,
512 0, 0,
513 (kernel_ulong_t)&card_info_5mbit
514 },
515 {
516 0x1571, 0xa201,
517 PCI_ANY_ID, PCI_ANY_ID,
518 0, 0,
519 (kernel_ulong_t)&card_info_10mbit
520 },
521 {
522 0x1571, 0xa202,
523 PCI_ANY_ID, PCI_ANY_ID,
524 0, 0,
525 (kernel_ulong_t)&card_info_10mbit
526 },
527 {
528 0x1571, 0xa203,
529 PCI_ANY_ID, PCI_ANY_ID,
530 0, 0,
531 (kernel_ulong_t)&card_info_10mbit
532 },
533 {
534 0x1571, 0xa204,
535 PCI_ANY_ID, PCI_ANY_ID,
536 0, 0,
537 (kernel_ulong_t)&card_info_10mbit
538 },
539 {
540 0x1571, 0xa205,
541 PCI_ANY_ID, PCI_ANY_ID,
542 0, 0,
543 (kernel_ulong_t)&card_info_10mbit
544 },
545 {
546 0x1571, 0xa206,
547 PCI_ANY_ID, PCI_ANY_ID,
548 0, 0,
549 (kernel_ulong_t)&card_info_10mbit
550 },
551 {
552 0x10B5, 0x9030,
553 0x10B5, 0x2978,
554 0, 0,
555 (kernel_ulong_t)&card_info_sohard
556 },
557 {
558 0x10B5, 0x9050,
559 0x10B5, 0x2273,
560 0, 0,
561 (kernel_ulong_t)&card_info_sohard
562 },
563 {
564 0x10B5, 0x9050,
565 0x10B5, 0x3263,
566 0, 0,
567 (kernel_ulong_t)&card_info_eae_arc1
568 },
569 {
570 0x10B5, 0x9050,
571 0x10B5, 0x3292,
572 0, 0,
573 (kernel_ulong_t)&card_info_eae_ma1
574 },
575 {
576 0x10B5, 0x9050,
577 0x10B5, 0x3294,
578 0, 0,
579 (kernel_ulong_t)&card_info_eae_fb2
580 },
581 {
582 0x14BA, 0x6000,
583 PCI_ANY_ID, PCI_ANY_ID,
584 0, 0,
585 (kernel_ulong_t)&card_info_10mbit
586 },
587 {
588 0x10B5, 0x2200,
589 PCI_ANY_ID, PCI_ANY_ID,
590 0, 0,
591 (kernel_ulong_t)&card_info_10mbit
592 },
593 { 0, }
594 };
595
596 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
597
598 static struct pci_driver com20020pci_driver = {
599 .name = "com20020",
600 .id_table = com20020pci_id_table,
601 .probe = com20020pci_probe,
602 .remove = com20020pci_remove,
603 };
604
com20020pci_init(void)605 static int __init com20020pci_init(void)
606 {
607 if (BUGLVL(D_NORMAL))
608 pr_info("%s\n", "COM20020 PCI support");
609 return pci_register_driver(&com20020pci_driver);
610 }
611
com20020pci_cleanup(void)612 static void __exit com20020pci_cleanup(void)
613 {
614 pci_unregister_driver(&com20020pci_driver);
615 }
616
617 module_init(com20020pci_init)
618 module_exit(com20020pci_cleanup)
619