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 if (!card->tx_led.default_trigger) {
254 ret = -ENOMEM;
255 goto err_free_arcdev;
256 }
257 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
258 "pci:green:tx:%d-%d",
259 dev->dev_id, i);
260 if (!card->tx_led.name) {
261 ret = -ENOMEM;
262 goto err_free_arcdev;
263 }
264 card->tx_led.dev = &dev->dev;
265 card->recon_led.brightness_set = led_recon_set;
266 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
267 GFP_KERNEL, "arc%d-%d-recon",
268 dev->dev_id, i);
269 if (!card->recon_led.default_trigger) {
270 ret = -ENOMEM;
271 goto err_free_arcdev;
272 }
273 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
274 "pci:red:recon:%d-%d",
275 dev->dev_id, i);
276 if (!card->recon_led.name) {
277 ret = -ENOMEM;
278 goto err_free_arcdev;
279 }
280 card->recon_led.dev = &dev->dev;
281
282 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
283 if (ret)
284 goto err_free_arcdev;
285
286 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
287 if (ret)
288 goto err_free_arcdev;
289
290 dev_set_drvdata(&dev->dev, card);
291 devm_arcnet_led_init(dev, dev->dev_id, i);
292 }
293
294 card->dev = dev;
295 list_add(&card->list, &priv->list_dev);
296 continue;
297
298 err_free_arcdev:
299 free_arcdev(dev);
300 break;
301 }
302 if (ret)
303 com20020pci_remove(pdev);
304 return ret;
305 }
306
com20020pci_remove(struct pci_dev * pdev)307 static void com20020pci_remove(struct pci_dev *pdev)
308 {
309 struct com20020_dev *card, *tmpcard;
310 struct com20020_priv *priv;
311
312 priv = pci_get_drvdata(pdev);
313
314 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
315 struct net_device *dev = card->dev;
316
317 unregister_netdev(dev);
318 free_irq(dev->irq, dev);
319 free_arcdev(dev);
320 }
321 }
322
323 static struct com20020_pci_card_info card_info_10mbit = {
324 .name = "ARC-PCI",
325 .devcount = 1,
326 .chan_map_tbl = {
327 {
328 .bar = 2,
329 .offset = 0x00,
330 .size = 0x08,
331 },
332 },
333 .flags = ARC_CAN_10MBIT,
334 };
335
336 static struct com20020_pci_card_info card_info_5mbit = {
337 .name = "ARC-PCI",
338 .devcount = 1,
339 .chan_map_tbl = {
340 {
341 .bar = 2,
342 .offset = 0x00,
343 .size = 0x08,
344 },
345 },
346 .flags = ARC_IS_5MBIT,
347 };
348
349 static struct com20020_pci_card_info card_info_sohard = {
350 .name = "SOHARD SH ARC-PCI",
351 .devcount = 1,
352 /* SOHARD needs PCI base addr 4 */
353 .chan_map_tbl = {
354 {
355 .bar = 4,
356 .offset = 0x00,
357 .size = 0x08
358 },
359 },
360 .flags = ARC_CAN_10MBIT,
361 };
362
363 static struct com20020_pci_card_info card_info_eae_arc1 = {
364 .name = "EAE PLX-PCI ARC1",
365 .devcount = 1,
366 .chan_map_tbl = {
367 {
368 .bar = 2,
369 .offset = 0x00,
370 .size = 0x08,
371 },
372 },
373 .misc_map = {
374 .bar = 2,
375 .offset = 0x10,
376 .size = 0x04,
377 },
378 .leds = {
379 {
380 .green = 0x0,
381 .red = 0x1,
382 },
383 },
384 .rotary = 0x0,
385 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
386 };
387
388 static struct com20020_pci_card_info card_info_eae_ma1 = {
389 .name = "EAE PLX-PCI MA1",
390 .devcount = 2,
391 .chan_map_tbl = {
392 {
393 .bar = 2,
394 .offset = 0x00,
395 .size = 0x08,
396 }, {
397 .bar = 2,
398 .offset = 0x08,
399 .size = 0x08,
400 }
401 },
402 .misc_map = {
403 .bar = 2,
404 .offset = 0x10,
405 .size = 0x04,
406 },
407 .leds = {
408 {
409 .green = 0x0,
410 .red = 0x1,
411 }, {
412 .green = 0x2,
413 .red = 0x3,
414 },
415 },
416 .rotary = 0x0,
417 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
418 };
419
420 static struct com20020_pci_card_info card_info_eae_fb2 = {
421 .name = "EAE PLX-PCI FB2",
422 .devcount = 1,
423 .chan_map_tbl = {
424 {
425 .bar = 2,
426 .offset = 0x00,
427 .size = 0x08,
428 },
429 },
430 .misc_map = {
431 .bar = 2,
432 .offset = 0x10,
433 .size = 0x04,
434 },
435 .leds = {
436 {
437 .green = 0x0,
438 .red = 0x1,
439 },
440 },
441 .rotary = 0x0,
442 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
443 };
444
445 static const struct pci_device_id com20020pci_id_table[] = {
446 {
447 0x1571, 0xa001,
448 PCI_ANY_ID, PCI_ANY_ID,
449 0, 0,
450 0,
451 },
452 {
453 0x1571, 0xa002,
454 PCI_ANY_ID, PCI_ANY_ID,
455 0, 0,
456 0,
457 },
458 {
459 0x1571, 0xa003,
460 PCI_ANY_ID, PCI_ANY_ID,
461 0, 0,
462 0
463 },
464 {
465 0x1571, 0xa004,
466 PCI_ANY_ID, PCI_ANY_ID,
467 0, 0,
468 0,
469 },
470 {
471 0x1571, 0xa005,
472 PCI_ANY_ID, PCI_ANY_ID,
473 0, 0,
474 0
475 },
476 {
477 0x1571, 0xa006,
478 PCI_ANY_ID, PCI_ANY_ID,
479 0, 0,
480 0
481 },
482 {
483 0x1571, 0xa007,
484 PCI_ANY_ID, PCI_ANY_ID,
485 0, 0,
486 0
487 },
488 {
489 0x1571, 0xa008,
490 PCI_ANY_ID, PCI_ANY_ID,
491 0, 0,
492 0
493 },
494 {
495 0x1571, 0xa009,
496 PCI_ANY_ID, PCI_ANY_ID,
497 0, 0,
498 (kernel_ulong_t)&card_info_5mbit
499 },
500 {
501 0x1571, 0xa00a,
502 PCI_ANY_ID, PCI_ANY_ID,
503 0, 0,
504 (kernel_ulong_t)&card_info_5mbit
505 },
506 {
507 0x1571, 0xa00b,
508 PCI_ANY_ID, PCI_ANY_ID,
509 0, 0,
510 (kernel_ulong_t)&card_info_5mbit
511 },
512 {
513 0x1571, 0xa00c,
514 PCI_ANY_ID, PCI_ANY_ID,
515 0, 0,
516 (kernel_ulong_t)&card_info_5mbit
517 },
518 {
519 0x1571, 0xa00d,
520 PCI_ANY_ID, PCI_ANY_ID,
521 0, 0,
522 (kernel_ulong_t)&card_info_5mbit
523 },
524 {
525 0x1571, 0xa00e,
526 PCI_ANY_ID, PCI_ANY_ID,
527 0, 0,
528 (kernel_ulong_t)&card_info_5mbit
529 },
530 {
531 0x1571, 0xa201,
532 PCI_ANY_ID, PCI_ANY_ID,
533 0, 0,
534 (kernel_ulong_t)&card_info_10mbit
535 },
536 {
537 0x1571, 0xa202,
538 PCI_ANY_ID, PCI_ANY_ID,
539 0, 0,
540 (kernel_ulong_t)&card_info_10mbit
541 },
542 {
543 0x1571, 0xa203,
544 PCI_ANY_ID, PCI_ANY_ID,
545 0, 0,
546 (kernel_ulong_t)&card_info_10mbit
547 },
548 {
549 0x1571, 0xa204,
550 PCI_ANY_ID, PCI_ANY_ID,
551 0, 0,
552 (kernel_ulong_t)&card_info_10mbit
553 },
554 {
555 0x1571, 0xa205,
556 PCI_ANY_ID, PCI_ANY_ID,
557 0, 0,
558 (kernel_ulong_t)&card_info_10mbit
559 },
560 {
561 0x1571, 0xa206,
562 PCI_ANY_ID, PCI_ANY_ID,
563 0, 0,
564 (kernel_ulong_t)&card_info_10mbit
565 },
566 {
567 0x10B5, 0x9030,
568 0x10B5, 0x2978,
569 0, 0,
570 (kernel_ulong_t)&card_info_sohard
571 },
572 {
573 0x10B5, 0x9050,
574 0x10B5, 0x2273,
575 0, 0,
576 (kernel_ulong_t)&card_info_sohard
577 },
578 {
579 0x10B5, 0x9050,
580 0x10B5, 0x3263,
581 0, 0,
582 (kernel_ulong_t)&card_info_eae_arc1
583 },
584 {
585 0x10B5, 0x9050,
586 0x10B5, 0x3292,
587 0, 0,
588 (kernel_ulong_t)&card_info_eae_ma1
589 },
590 {
591 0x10B5, 0x9050,
592 0x10B5, 0x3294,
593 0, 0,
594 (kernel_ulong_t)&card_info_eae_fb2
595 },
596 {
597 0x14BA, 0x6000,
598 PCI_ANY_ID, PCI_ANY_ID,
599 0, 0,
600 (kernel_ulong_t)&card_info_10mbit
601 },
602 {
603 0x10B5, 0x2200,
604 PCI_ANY_ID, PCI_ANY_ID,
605 0, 0,
606 (kernel_ulong_t)&card_info_10mbit
607 },
608 { 0, }
609 };
610
611 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
612
613 static struct pci_driver com20020pci_driver = {
614 .name = "com20020",
615 .id_table = com20020pci_id_table,
616 .probe = com20020pci_probe,
617 .remove = com20020pci_remove,
618 };
619
com20020pci_init(void)620 static int __init com20020pci_init(void)
621 {
622 if (BUGLVL(D_NORMAL))
623 pr_info("%s\n", "COM20020 PCI support");
624 return pci_register_driver(&com20020pci_driver);
625 }
626
com20020pci_cleanup(void)627 static void __exit com20020pci_cleanup(void)
628 {
629 pci_unregister_driver(&com20020pci_driver);
630 }
631
632 module_init(com20020pci_init)
633 module_exit(com20020pci_cleanup)
634