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_DESCRIPTION("ARCnet COM20020 chipset PCI driver");
65 MODULE_LICENSE("GPL");
66
led_tx_set(struct led_classdev * led_cdev,enum led_brightness value)67 static void led_tx_set(struct led_classdev *led_cdev,
68 enum led_brightness value)
69 {
70 struct com20020_dev *card;
71 struct com20020_priv *priv;
72 struct com20020_pci_card_info *ci;
73
74 card = container_of(led_cdev, struct com20020_dev, tx_led);
75
76 priv = card->pci_priv;
77 ci = priv->ci;
78
79 outb(!!value, priv->misc + ci->leds[card->index].green);
80 }
81
led_recon_set(struct led_classdev * led_cdev,enum led_brightness value)82 static void led_recon_set(struct led_classdev *led_cdev,
83 enum led_brightness value)
84 {
85 struct com20020_dev *card;
86 struct com20020_priv *priv;
87 struct com20020_pci_card_info *ci;
88
89 card = container_of(led_cdev, struct com20020_dev, recon_led);
90
91 priv = card->pci_priv;
92 ci = priv->ci;
93
94 outb(!!value, priv->misc + ci->leds[card->index].red);
95 }
96
backplane_mode_show(struct device * dev,struct device_attribute * attr,char * buf)97 static ssize_t backplane_mode_show(struct device *dev,
98 struct device_attribute *attr,
99 char *buf)
100 {
101 struct net_device *net_dev = to_net_dev(dev);
102 struct arcnet_local *lp = netdev_priv(net_dev);
103
104 return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
105 }
106 static DEVICE_ATTR_RO(backplane_mode);
107
108 static struct attribute *com20020_state_attrs[] = {
109 &dev_attr_backplane_mode.attr,
110 NULL,
111 };
112
113 static const struct attribute_group com20020_state_group = {
114 .name = NULL,
115 .attrs = com20020_state_attrs,
116 };
117
118 static void com20020pci_remove(struct pci_dev *pdev);
119
com20020pci_probe(struct pci_dev * pdev,const struct pci_device_id * id)120 static int com20020pci_probe(struct pci_dev *pdev,
121 const struct pci_device_id *id)
122 {
123 struct com20020_pci_card_info *ci;
124 struct com20020_pci_channel_map *mm;
125 struct net_device *dev;
126 struct arcnet_local *lp;
127 struct com20020_priv *priv;
128 int i, ioaddr, ret;
129 struct resource *r;
130
131 ret = 0;
132
133 if (pci_enable_device(pdev))
134 return -EIO;
135
136 priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
137 GFP_KERNEL);
138 if (!priv)
139 return -ENOMEM;
140
141 ci = (struct com20020_pci_card_info *)id->driver_data;
142 if (!ci)
143 return -EINVAL;
144
145 priv->ci = ci;
146 mm = &ci->misc_map;
147
148 pci_set_drvdata(pdev, priv);
149
150 INIT_LIST_HEAD(&priv->list_dev);
151
152 if (mm->size) {
153 ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
154 r = devm_request_region(&pdev->dev, ioaddr, mm->size,
155 "com20020-pci");
156 if (!r) {
157 pr_err("IO region %xh-%xh already allocated.\n",
158 ioaddr, ioaddr + mm->size - 1);
159 return -EBUSY;
160 }
161 priv->misc = ioaddr;
162 }
163
164 for (i = 0; i < ci->devcount; i++) {
165 struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
166 struct com20020_dev *card;
167 int dev_id_mask = 0xf;
168
169 dev = alloc_arcdev(device);
170 if (!dev) {
171 ret = -ENOMEM;
172 break;
173 }
174 dev->dev_port = i;
175
176 dev->netdev_ops = &com20020_netdev_ops;
177
178 lp = netdev_priv(dev);
179
180 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
181 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
182
183 r = devm_request_region(&pdev->dev, ioaddr, cm->size,
184 "com20020-pci");
185 if (!r) {
186 pr_err("IO region %xh-%xh already allocated\n",
187 ioaddr, ioaddr + cm->size - 1);
188 ret = -EBUSY;
189 goto err_free_arcdev;
190 }
191
192 /* Dummy access after Reset
193 * ARCNET controller needs
194 * this access to detect bustype
195 */
196 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
197 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
198
199 SET_NETDEV_DEV(dev, &pdev->dev);
200 dev->base_addr = ioaddr;
201 arcnet_set_addr(dev, node);
202 dev->sysfs_groups[0] = &com20020_state_group;
203 dev->irq = pdev->irq;
204 lp->card_name = "PCI COM20020";
205 lp->card_flags = ci->flags;
206 lp->backplane = backplane;
207 lp->clockp = clockp & 7;
208 lp->clockm = clockm & 3;
209 lp->timeout = timeout;
210 lp->hw.owner = THIS_MODULE;
211
212 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
213
214 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
215 lp->backplane = 1;
216
217 if (ci->flags & ARC_HAS_ROTARY) {
218 /* Get the dev_id from the PLX rotary coder */
219 if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
220 dev_id_mask = 0x3;
221 dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
222 snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
223 }
224
225 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
226 pr_err("IO address %Xh is empty!\n", ioaddr);
227 ret = -EIO;
228 goto err_free_arcdev;
229 }
230 if (com20020_check(dev)) {
231 ret = -EIO;
232 goto err_free_arcdev;
233 }
234
235 ret = com20020_found(dev, IRQF_SHARED);
236 if (ret)
237 goto err_free_arcdev;
238
239 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
240 GFP_KERNEL);
241 if (!card) {
242 ret = -ENOMEM;
243 goto err_free_arcdev;
244 }
245
246 card->index = i;
247 card->pci_priv = priv;
248
249 if (ci->flags & ARC_HAS_LED) {
250 card->tx_led.brightness_set = led_tx_set;
251 card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
252 GFP_KERNEL, "arc%d-%d-tx",
253 dev->dev_id, i);
254 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
255 "pci:green:tx:%d-%d",
256 dev->dev_id, i);
257
258 card->tx_led.dev = &dev->dev;
259 card->recon_led.brightness_set = led_recon_set;
260 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
261 GFP_KERNEL, "arc%d-%d-recon",
262 dev->dev_id, i);
263 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
264 "pci:red:recon:%d-%d",
265 dev->dev_id, i);
266 card->recon_led.dev = &dev->dev;
267
268 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
269 if (ret)
270 goto err_free_arcdev;
271
272 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
273 if (ret)
274 goto err_free_arcdev;
275
276 dev_set_drvdata(&dev->dev, card);
277 devm_arcnet_led_init(dev, dev->dev_id, i);
278 }
279
280 card->dev = dev;
281 list_add(&card->list, &priv->list_dev);
282 continue;
283
284 err_free_arcdev:
285 free_arcdev(dev);
286 break;
287 }
288 if (ret)
289 com20020pci_remove(pdev);
290 return ret;
291 }
292
com20020pci_remove(struct pci_dev * pdev)293 static void com20020pci_remove(struct pci_dev *pdev)
294 {
295 struct com20020_dev *card, *tmpcard;
296 struct com20020_priv *priv;
297
298 priv = pci_get_drvdata(pdev);
299
300 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
301 struct net_device *dev = card->dev;
302
303 unregister_netdev(dev);
304 free_irq(dev->irq, dev);
305 free_arcdev(dev);
306 }
307 }
308
309 static struct com20020_pci_card_info card_info_10mbit = {
310 .name = "ARC-PCI",
311 .devcount = 1,
312 .chan_map_tbl = {
313 {
314 .bar = 2,
315 .offset = 0x00,
316 .size = 0x08,
317 },
318 },
319 .flags = ARC_CAN_10MBIT,
320 };
321
322 static struct com20020_pci_card_info card_info_5mbit = {
323 .name = "ARC-PCI",
324 .devcount = 1,
325 .chan_map_tbl = {
326 {
327 .bar = 2,
328 .offset = 0x00,
329 .size = 0x08,
330 },
331 },
332 .flags = ARC_IS_5MBIT,
333 };
334
335 static struct com20020_pci_card_info card_info_sohard = {
336 .name = "SOHARD SH ARC-PCI",
337 .devcount = 1,
338 /* SOHARD needs PCI base addr 4 */
339 .chan_map_tbl = {
340 {
341 .bar = 4,
342 .offset = 0x00,
343 .size = 0x08
344 },
345 },
346 .flags = ARC_CAN_10MBIT,
347 };
348
349 static struct com20020_pci_card_info card_info_eae_arc1 = {
350 .name = "EAE PLX-PCI ARC1",
351 .devcount = 1,
352 .chan_map_tbl = {
353 {
354 .bar = 2,
355 .offset = 0x00,
356 .size = 0x08,
357 },
358 },
359 .misc_map = {
360 .bar = 2,
361 .offset = 0x10,
362 .size = 0x04,
363 },
364 .leds = {
365 {
366 .green = 0x0,
367 .red = 0x1,
368 },
369 },
370 .rotary = 0x0,
371 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
372 };
373
374 static struct com20020_pci_card_info card_info_eae_ma1 = {
375 .name = "EAE PLX-PCI MA1",
376 .devcount = 2,
377 .chan_map_tbl = {
378 {
379 .bar = 2,
380 .offset = 0x00,
381 .size = 0x08,
382 }, {
383 .bar = 2,
384 .offset = 0x08,
385 .size = 0x08,
386 }
387 },
388 .misc_map = {
389 .bar = 2,
390 .offset = 0x10,
391 .size = 0x04,
392 },
393 .leds = {
394 {
395 .green = 0x0,
396 .red = 0x1,
397 }, {
398 .green = 0x2,
399 .red = 0x3,
400 },
401 },
402 .rotary = 0x0,
403 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
404 };
405
406 static struct com20020_pci_card_info card_info_eae_fb2 = {
407 .name = "EAE PLX-PCI FB2",
408 .devcount = 1,
409 .chan_map_tbl = {
410 {
411 .bar = 2,
412 .offset = 0x00,
413 .size = 0x08,
414 },
415 },
416 .misc_map = {
417 .bar = 2,
418 .offset = 0x10,
419 .size = 0x04,
420 },
421 .leds = {
422 {
423 .green = 0x0,
424 .red = 0x1,
425 },
426 },
427 .rotary = 0x0,
428 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
429 };
430
431 static const struct pci_device_id com20020pci_id_table[] = {
432 {
433 0x1571, 0xa001,
434 PCI_ANY_ID, PCI_ANY_ID,
435 0, 0,
436 0,
437 },
438 {
439 0x1571, 0xa002,
440 PCI_ANY_ID, PCI_ANY_ID,
441 0, 0,
442 0,
443 },
444 {
445 0x1571, 0xa003,
446 PCI_ANY_ID, PCI_ANY_ID,
447 0, 0,
448 0
449 },
450 {
451 0x1571, 0xa004,
452 PCI_ANY_ID, PCI_ANY_ID,
453 0, 0,
454 0,
455 },
456 {
457 0x1571, 0xa005,
458 PCI_ANY_ID, PCI_ANY_ID,
459 0, 0,
460 0
461 },
462 {
463 0x1571, 0xa006,
464 PCI_ANY_ID, PCI_ANY_ID,
465 0, 0,
466 0
467 },
468 {
469 0x1571, 0xa007,
470 PCI_ANY_ID, PCI_ANY_ID,
471 0, 0,
472 0
473 },
474 {
475 0x1571, 0xa008,
476 PCI_ANY_ID, PCI_ANY_ID,
477 0, 0,
478 0
479 },
480 {
481 0x1571, 0xa009,
482 PCI_ANY_ID, PCI_ANY_ID,
483 0, 0,
484 (kernel_ulong_t)&card_info_5mbit
485 },
486 {
487 0x1571, 0xa00a,
488 PCI_ANY_ID, PCI_ANY_ID,
489 0, 0,
490 (kernel_ulong_t)&card_info_5mbit
491 },
492 {
493 0x1571, 0xa00b,
494 PCI_ANY_ID, PCI_ANY_ID,
495 0, 0,
496 (kernel_ulong_t)&card_info_5mbit
497 },
498 {
499 0x1571, 0xa00c,
500 PCI_ANY_ID, PCI_ANY_ID,
501 0, 0,
502 (kernel_ulong_t)&card_info_5mbit
503 },
504 {
505 0x1571, 0xa00d,
506 PCI_ANY_ID, PCI_ANY_ID,
507 0, 0,
508 (kernel_ulong_t)&card_info_5mbit
509 },
510 {
511 0x1571, 0xa00e,
512 PCI_ANY_ID, PCI_ANY_ID,
513 0, 0,
514 (kernel_ulong_t)&card_info_5mbit
515 },
516 {
517 0x1571, 0xa201,
518 PCI_ANY_ID, PCI_ANY_ID,
519 0, 0,
520 (kernel_ulong_t)&card_info_10mbit
521 },
522 {
523 0x1571, 0xa202,
524 PCI_ANY_ID, PCI_ANY_ID,
525 0, 0,
526 (kernel_ulong_t)&card_info_10mbit
527 },
528 {
529 0x1571, 0xa203,
530 PCI_ANY_ID, PCI_ANY_ID,
531 0, 0,
532 (kernel_ulong_t)&card_info_10mbit
533 },
534 {
535 0x1571, 0xa204,
536 PCI_ANY_ID, PCI_ANY_ID,
537 0, 0,
538 (kernel_ulong_t)&card_info_10mbit
539 },
540 {
541 0x1571, 0xa205,
542 PCI_ANY_ID, PCI_ANY_ID,
543 0, 0,
544 (kernel_ulong_t)&card_info_10mbit
545 },
546 {
547 0x1571, 0xa206,
548 PCI_ANY_ID, PCI_ANY_ID,
549 0, 0,
550 (kernel_ulong_t)&card_info_10mbit
551 },
552 {
553 0x10B5, 0x9030,
554 0x10B5, 0x2978,
555 0, 0,
556 (kernel_ulong_t)&card_info_sohard
557 },
558 {
559 0x10B5, 0x9050,
560 0x10B5, 0x2273,
561 0, 0,
562 (kernel_ulong_t)&card_info_sohard
563 },
564 {
565 0x10B5, 0x9050,
566 0x10B5, 0x3263,
567 0, 0,
568 (kernel_ulong_t)&card_info_eae_arc1
569 },
570 {
571 0x10B5, 0x9050,
572 0x10B5, 0x3292,
573 0, 0,
574 (kernel_ulong_t)&card_info_eae_ma1
575 },
576 {
577 0x10B5, 0x9050,
578 0x10B5, 0x3294,
579 0, 0,
580 (kernel_ulong_t)&card_info_eae_fb2
581 },
582 {
583 0x14BA, 0x6000,
584 PCI_ANY_ID, PCI_ANY_ID,
585 0, 0,
586 (kernel_ulong_t)&card_info_10mbit
587 },
588 {
589 0x10B5, 0x2200,
590 PCI_ANY_ID, PCI_ANY_ID,
591 0, 0,
592 (kernel_ulong_t)&card_info_10mbit
593 },
594 { 0, }
595 };
596
597 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
598
599 static struct pci_driver com20020pci_driver = {
600 .name = "com20020",
601 .id_table = com20020pci_id_table,
602 .probe = com20020pci_probe,
603 .remove = com20020pci_remove,
604 };
605
com20020pci_init(void)606 static int __init com20020pci_init(void)
607 {
608 if (BUGLVL(D_NORMAL))
609 pr_info("%s\n", "COM20020 PCI support");
610 return pci_register_driver(&com20020pci_driver);
611 }
612
com20020pci_cleanup(void)613 static void __exit com20020pci_cleanup(void)
614 {
615 pci_unregister_driver(&com20020pci_driver);
616 }
617
618 module_init(com20020pci_init)
619 module_exit(com20020pci_cleanup)
620