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 <[email protected]>.
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 if (!card->tx_led.default_trigger) {
255 ret = -ENOMEM;
256 goto err_free_arcdev;
257 }
258 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
259 "pci:green:tx:%d-%d",
260 dev->dev_id, i);
261 if (!card->tx_led.name) {
262 ret = -ENOMEM;
263 goto err_free_arcdev;
264 }
265 card->tx_led.dev = &dev->dev;
266 card->recon_led.brightness_set = led_recon_set;
267 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
268 GFP_KERNEL, "arc%d-%d-recon",
269 dev->dev_id, i);
270 if (!card->recon_led.default_trigger) {
271 ret = -ENOMEM;
272 goto err_free_arcdev;
273 }
274 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
275 "pci:red:recon:%d-%d",
276 dev->dev_id, i);
277 if (!card->recon_led.name) {
278 ret = -ENOMEM;
279 goto err_free_arcdev;
280 }
281 card->recon_led.dev = &dev->dev;
282
283 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
284 if (ret)
285 goto err_free_arcdev;
286
287 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
288 if (ret)
289 goto err_free_arcdev;
290
291 dev_set_drvdata(&dev->dev, card);
292 devm_arcnet_led_init(dev, dev->dev_id, i);
293 }
294
295 card->dev = dev;
296 list_add(&card->list, &priv->list_dev);
297 continue;
298
299 err_free_arcdev:
300 free_arcdev(dev);
301 break;
302 }
303 if (ret)
304 com20020pci_remove(pdev);
305 return ret;
306 }
307
com20020pci_remove(struct pci_dev * pdev)308 static void com20020pci_remove(struct pci_dev *pdev)
309 {
310 struct com20020_dev *card, *tmpcard;
311 struct com20020_priv *priv;
312
313 priv = pci_get_drvdata(pdev);
314
315 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
316 struct net_device *dev = card->dev;
317
318 unregister_netdev(dev);
319 free_irq(dev->irq, dev);
320 free_arcdev(dev);
321 }
322 }
323
324 static struct com20020_pci_card_info card_info_10mbit = {
325 .name = "ARC-PCI",
326 .devcount = 1,
327 .chan_map_tbl = {
328 {
329 .bar = 2,
330 .offset = 0x00,
331 .size = 0x08,
332 },
333 },
334 .flags = ARC_CAN_10MBIT,
335 };
336
337 static struct com20020_pci_card_info card_info_5mbit = {
338 .name = "ARC-PCI",
339 .devcount = 1,
340 .chan_map_tbl = {
341 {
342 .bar = 2,
343 .offset = 0x00,
344 .size = 0x08,
345 },
346 },
347 .flags = ARC_IS_5MBIT,
348 };
349
350 static struct com20020_pci_card_info card_info_sohard = {
351 .name = "SOHARD SH ARC-PCI",
352 .devcount = 1,
353 /* SOHARD needs PCI base addr 4 */
354 .chan_map_tbl = {
355 {
356 .bar = 4,
357 .offset = 0x00,
358 .size = 0x08
359 },
360 },
361 .flags = ARC_CAN_10MBIT,
362 };
363
364 static struct com20020_pci_card_info card_info_eae_arc1 = {
365 .name = "EAE PLX-PCI ARC1",
366 .devcount = 1,
367 .chan_map_tbl = {
368 {
369 .bar = 2,
370 .offset = 0x00,
371 .size = 0x08,
372 },
373 },
374 .misc_map = {
375 .bar = 2,
376 .offset = 0x10,
377 .size = 0x04,
378 },
379 .leds = {
380 {
381 .green = 0x0,
382 .red = 0x1,
383 },
384 },
385 .rotary = 0x0,
386 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
387 };
388
389 static struct com20020_pci_card_info card_info_eae_ma1 = {
390 .name = "EAE PLX-PCI MA1",
391 .devcount = 2,
392 .chan_map_tbl = {
393 {
394 .bar = 2,
395 .offset = 0x00,
396 .size = 0x08,
397 }, {
398 .bar = 2,
399 .offset = 0x08,
400 .size = 0x08,
401 }
402 },
403 .misc_map = {
404 .bar = 2,
405 .offset = 0x10,
406 .size = 0x04,
407 },
408 .leds = {
409 {
410 .green = 0x0,
411 .red = 0x1,
412 }, {
413 .green = 0x2,
414 .red = 0x3,
415 },
416 },
417 .rotary = 0x0,
418 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
419 };
420
421 static struct com20020_pci_card_info card_info_eae_fb2 = {
422 .name = "EAE PLX-PCI FB2",
423 .devcount = 1,
424 .chan_map_tbl = {
425 {
426 .bar = 2,
427 .offset = 0x00,
428 .size = 0x08,
429 },
430 },
431 .misc_map = {
432 .bar = 2,
433 .offset = 0x10,
434 .size = 0x04,
435 },
436 .leds = {
437 {
438 .green = 0x0,
439 .red = 0x1,
440 },
441 },
442 .rotary = 0x0,
443 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
444 };
445
446 static const struct pci_device_id com20020pci_id_table[] = {
447 {
448 0x1571, 0xa001,
449 PCI_ANY_ID, PCI_ANY_ID,
450 0, 0,
451 0,
452 },
453 {
454 0x1571, 0xa002,
455 PCI_ANY_ID, PCI_ANY_ID,
456 0, 0,
457 0,
458 },
459 {
460 0x1571, 0xa003,
461 PCI_ANY_ID, PCI_ANY_ID,
462 0, 0,
463 0
464 },
465 {
466 0x1571, 0xa004,
467 PCI_ANY_ID, PCI_ANY_ID,
468 0, 0,
469 0,
470 },
471 {
472 0x1571, 0xa005,
473 PCI_ANY_ID, PCI_ANY_ID,
474 0, 0,
475 0
476 },
477 {
478 0x1571, 0xa006,
479 PCI_ANY_ID, PCI_ANY_ID,
480 0, 0,
481 0
482 },
483 {
484 0x1571, 0xa007,
485 PCI_ANY_ID, PCI_ANY_ID,
486 0, 0,
487 0
488 },
489 {
490 0x1571, 0xa008,
491 PCI_ANY_ID, PCI_ANY_ID,
492 0, 0,
493 0
494 },
495 {
496 0x1571, 0xa009,
497 PCI_ANY_ID, PCI_ANY_ID,
498 0, 0,
499 (kernel_ulong_t)&card_info_5mbit
500 },
501 {
502 0x1571, 0xa00a,
503 PCI_ANY_ID, PCI_ANY_ID,
504 0, 0,
505 (kernel_ulong_t)&card_info_5mbit
506 },
507 {
508 0x1571, 0xa00b,
509 PCI_ANY_ID, PCI_ANY_ID,
510 0, 0,
511 (kernel_ulong_t)&card_info_5mbit
512 },
513 {
514 0x1571, 0xa00c,
515 PCI_ANY_ID, PCI_ANY_ID,
516 0, 0,
517 (kernel_ulong_t)&card_info_5mbit
518 },
519 {
520 0x1571, 0xa00d,
521 PCI_ANY_ID, PCI_ANY_ID,
522 0, 0,
523 (kernel_ulong_t)&card_info_5mbit
524 },
525 {
526 0x1571, 0xa00e,
527 PCI_ANY_ID, PCI_ANY_ID,
528 0, 0,
529 (kernel_ulong_t)&card_info_5mbit
530 },
531 {
532 0x1571, 0xa201,
533 PCI_ANY_ID, PCI_ANY_ID,
534 0, 0,
535 (kernel_ulong_t)&card_info_10mbit
536 },
537 {
538 0x1571, 0xa202,
539 PCI_ANY_ID, PCI_ANY_ID,
540 0, 0,
541 (kernel_ulong_t)&card_info_10mbit
542 },
543 {
544 0x1571, 0xa203,
545 PCI_ANY_ID, PCI_ANY_ID,
546 0, 0,
547 (kernel_ulong_t)&card_info_10mbit
548 },
549 {
550 0x1571, 0xa204,
551 PCI_ANY_ID, PCI_ANY_ID,
552 0, 0,
553 (kernel_ulong_t)&card_info_10mbit
554 },
555 {
556 0x1571, 0xa205,
557 PCI_ANY_ID, PCI_ANY_ID,
558 0, 0,
559 (kernel_ulong_t)&card_info_10mbit
560 },
561 {
562 0x1571, 0xa206,
563 PCI_ANY_ID, PCI_ANY_ID,
564 0, 0,
565 (kernel_ulong_t)&card_info_10mbit
566 },
567 {
568 0x10B5, 0x9030,
569 0x10B5, 0x2978,
570 0, 0,
571 (kernel_ulong_t)&card_info_sohard
572 },
573 {
574 0x10B5, 0x9050,
575 0x10B5, 0x2273,
576 0, 0,
577 (kernel_ulong_t)&card_info_sohard
578 },
579 {
580 0x10B5, 0x9050,
581 0x10B5, 0x3263,
582 0, 0,
583 (kernel_ulong_t)&card_info_eae_arc1
584 },
585 {
586 0x10B5, 0x9050,
587 0x10B5, 0x3292,
588 0, 0,
589 (kernel_ulong_t)&card_info_eae_ma1
590 },
591 {
592 0x10B5, 0x9050,
593 0x10B5, 0x3294,
594 0, 0,
595 (kernel_ulong_t)&card_info_eae_fb2
596 },
597 {
598 0x14BA, 0x6000,
599 PCI_ANY_ID, PCI_ANY_ID,
600 0, 0,
601 (kernel_ulong_t)&card_info_10mbit
602 },
603 {
604 0x10B5, 0x2200,
605 PCI_ANY_ID, PCI_ANY_ID,
606 0, 0,
607 (kernel_ulong_t)&card_info_10mbit
608 },
609 { 0, }
610 };
611
612 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
613
614 static struct pci_driver com20020pci_driver = {
615 .name = "com20020",
616 .id_table = com20020pci_id_table,
617 .probe = com20020pci_probe,
618 .remove = com20020pci_remove,
619 };
620
com20020pci_init(void)621 static int __init com20020pci_init(void)
622 {
623 if (BUGLVL(D_NORMAL))
624 pr_info("%s\n", "COM20020 PCI support");
625 return pci_register_driver(&com20020pci_driver);
626 }
627
com20020pci_cleanup(void)628 static void __exit com20020pci_cleanup(void)
629 {
630 pci_unregister_driver(&com20020pci_driver);
631 }
632
633 module_init(com20020pci_init)
634 module_exit(com20020pci_cleanup)
635