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