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
51static int node;
52static char device[9]; /* use eg. device="arc1" to change name */
53static int timeout = 3;
54static int backplane;
55static int clockp;
56static int clockm;
57
58module_param(node, int, 0);
59module_param_string(device, device, sizeof(device), 0);
60module_param(timeout, int, 0);
61module_param(backplane, int, 0);
62module_param(clockp, int, 0);
63module_param(clockm, int, 0);
64MODULE_LICENSE("GPL");
65
66static 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: !!value, port: priv->misc + ci->leds[card->index].green);
79}
80
81static 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: !!value, port: priv->misc + ci->leds[card->index].red);
94}
95
96static 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(dev: net_dev);
102
103 return sprintf(buf, fmt: "%s\n", lp->backplane ? "true" : "false");
104}
105static DEVICE_ATTR_RO(backplane_mode);
106
107static struct attribute *com20020_state_attrs[] = {
108 &dev_attr_backplane_mode.attr,
109 NULL,
110};
111
112static const struct attribute_group com20020_state_group = {
113 .name = NULL,
114 .attrs = com20020_state_attrs,
115};
116
117static void com20020pci_remove(struct pci_dev *pdev);
118
119static 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(dev: pdev))
133 return -EIO;
134
135 priv = devm_kzalloc(dev: &pdev->dev, size: 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, data: priv);
148
149 INIT_LIST_HEAD(list: &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(name: 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, addr: 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(port: priv->misc) >> (2 + i)) & 0x1;
212
213 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
214 lp->backplane = 1;
215
216 /* Get the dev_id from the PLX rotary coder */
217 if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
218 dev_id_mask = 0x3;
219 dev->dev_id = (inb(port: priv->misc + ci->rotary) >> 4) & dev_id_mask;
220
221 snprintf(buf: dev->name, size: sizeof(dev->name), fmt: "arc%d-%d", dev->dev_id, i);
222
223 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
224 pr_err("IO address %Xh is empty!\n", ioaddr);
225 ret = -EIO;
226 goto err_free_arcdev;
227 }
228 if (com20020_check(dev)) {
229 ret = -EIO;
230 goto err_free_arcdev;
231 }
232
233 card = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct com20020_dev),
234 GFP_KERNEL);
235 if (!card) {
236 ret = -ENOMEM;
237 goto err_free_arcdev;
238 }
239
240 card->index = i;
241 card->pci_priv = priv;
242 card->tx_led.brightness_set = led_tx_set;
243 card->tx_led.default_trigger = devm_kasprintf(dev: &pdev->dev,
244 GFP_KERNEL, fmt: "arc%d-%d-tx",
245 dev->dev_id, i);
246 card->tx_led.name = devm_kasprintf(dev: &pdev->dev, GFP_KERNEL,
247 fmt: "pci:green:tx:%d-%d",
248 dev->dev_id, i);
249
250 card->tx_led.dev = &dev->dev;
251 card->recon_led.brightness_set = led_recon_set;
252 card->recon_led.default_trigger = devm_kasprintf(dev: &pdev->dev,
253 GFP_KERNEL, fmt: "arc%d-%d-recon",
254 dev->dev_id, i);
255 card->recon_led.name = devm_kasprintf(dev: &pdev->dev, GFP_KERNEL,
256 fmt: "pci:red:recon:%d-%d",
257 dev->dev_id, i);
258 card->recon_led.dev = &dev->dev;
259 card->dev = dev;
260
261 ret = devm_led_classdev_register(parent: &pdev->dev, led_cdev: &card->tx_led);
262 if (ret)
263 goto err_free_arcdev;
264
265 ret = devm_led_classdev_register(parent: &pdev->dev, led_cdev: &card->recon_led);
266 if (ret)
267 goto err_free_arcdev;
268
269 dev_set_drvdata(dev: &dev->dev, data: card);
270
271 ret = com20020_found(dev, IRQF_SHARED);
272 if (ret)
273 goto err_free_arcdev;
274
275 devm_arcnet_led_init(netdev: dev, index: dev->dev_id, subid: i);
276
277 list_add(new: &card->list, head: &priv->list_dev);
278 continue;
279
280err_free_arcdev:
281 free_arcdev(dev);
282 break;
283 }
284 if (ret)
285 com20020pci_remove(pdev);
286 return ret;
287}
288
289static void com20020pci_remove(struct pci_dev *pdev)
290{
291 struct com20020_dev *card, *tmpcard;
292 struct com20020_priv *priv;
293
294 priv = pci_get_drvdata(pdev);
295
296 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
297 struct net_device *dev = card->dev;
298
299 unregister_netdev(dev);
300 free_irq(dev->irq, dev);
301 free_arcdev(dev);
302 }
303}
304
305static struct com20020_pci_card_info card_info_10mbit = {
306 .name = "ARC-PCI",
307 .devcount = 1,
308 .chan_map_tbl = {
309 {
310 .bar = 2,
311 .offset = 0x00,
312 .size = 0x08,
313 },
314 },
315 .flags = ARC_CAN_10MBIT,
316};
317
318static struct com20020_pci_card_info card_info_5mbit = {
319 .name = "ARC-PCI",
320 .devcount = 1,
321 .chan_map_tbl = {
322 {
323 .bar = 2,
324 .offset = 0x00,
325 .size = 0x08,
326 },
327 },
328 .flags = ARC_IS_5MBIT,
329};
330
331static struct com20020_pci_card_info card_info_sohard = {
332 .name = "PLX-PCI",
333 .devcount = 1,
334 /* SOHARD needs PCI base addr 4 */
335 .chan_map_tbl = {
336 {
337 .bar = 4,
338 .offset = 0x00,
339 .size = 0x08
340 },
341 },
342 .flags = ARC_CAN_10MBIT,
343};
344
345static struct com20020_pci_card_info card_info_eae_arc1 = {
346 .name = "EAE PLX-PCI ARC1",
347 .devcount = 1,
348 .chan_map_tbl = {
349 {
350 .bar = 2,
351 .offset = 0x00,
352 .size = 0x08,
353 },
354 },
355 .misc_map = {
356 .bar = 2,
357 .offset = 0x10,
358 .size = 0x04,
359 },
360 .leds = {
361 {
362 .green = 0x0,
363 .red = 0x1,
364 },
365 },
366 .rotary = 0x0,
367 .flags = ARC_CAN_10MBIT,
368};
369
370static struct com20020_pci_card_info card_info_eae_ma1 = {
371 .name = "EAE PLX-PCI MA1",
372 .devcount = 2,
373 .chan_map_tbl = {
374 {
375 .bar = 2,
376 .offset = 0x00,
377 .size = 0x08,
378 }, {
379 .bar = 2,
380 .offset = 0x08,
381 .size = 0x08,
382 }
383 },
384 .misc_map = {
385 .bar = 2,
386 .offset = 0x10,
387 .size = 0x04,
388 },
389 .leds = {
390 {
391 .green = 0x0,
392 .red = 0x1,
393 }, {
394 .green = 0x2,
395 .red = 0x3,
396 },
397 },
398 .rotary = 0x0,
399 .flags = ARC_CAN_10MBIT,
400};
401
402static struct com20020_pci_card_info card_info_eae_fb2 = {
403 .name = "EAE PLX-PCI FB2",
404 .devcount = 1,
405 .chan_map_tbl = {
406 {
407 .bar = 2,
408 .offset = 0x00,
409 .size = 0x08,
410 },
411 },
412 .misc_map = {
413 .bar = 2,
414 .offset = 0x10,
415 .size = 0x04,
416 },
417 .leds = {
418 {
419 .green = 0x0,
420 .red = 0x1,
421 },
422 },
423 .rotary = 0x0,
424 .flags = ARC_CAN_10MBIT,
425};
426
427static const struct pci_device_id com20020pci_id_table[] = {
428 {
429 0x1571, 0xa001,
430 PCI_ANY_ID, PCI_ANY_ID,
431 0, 0,
432 0,
433 },
434 {
435 0x1571, 0xa002,
436 PCI_ANY_ID, PCI_ANY_ID,
437 0, 0,
438 0,
439 },
440 {
441 0x1571, 0xa003,
442 PCI_ANY_ID, PCI_ANY_ID,
443 0, 0,
444 0
445 },
446 {
447 0x1571, 0xa004,
448 PCI_ANY_ID, PCI_ANY_ID,
449 0, 0,
450 0,
451 },
452 {
453 0x1571, 0xa005,
454 PCI_ANY_ID, PCI_ANY_ID,
455 0, 0,
456 0
457 },
458 {
459 0x1571, 0xa006,
460 PCI_ANY_ID, PCI_ANY_ID,
461 0, 0,
462 0
463 },
464 {
465 0x1571, 0xa007,
466 PCI_ANY_ID, PCI_ANY_ID,
467 0, 0,
468 0
469 },
470 {
471 0x1571, 0xa008,
472 PCI_ANY_ID, PCI_ANY_ID,
473 0, 0,
474 0
475 },
476 {
477 0x1571, 0xa009,
478 PCI_ANY_ID, PCI_ANY_ID,
479 0, 0,
480 (kernel_ulong_t)&card_info_5mbit
481 },
482 {
483 0x1571, 0xa00a,
484 PCI_ANY_ID, PCI_ANY_ID,
485 0, 0,
486 (kernel_ulong_t)&card_info_5mbit
487 },
488 {
489 0x1571, 0xa00b,
490 PCI_ANY_ID, PCI_ANY_ID,
491 0, 0,
492 (kernel_ulong_t)&card_info_5mbit
493 },
494 {
495 0x1571, 0xa00c,
496 PCI_ANY_ID, PCI_ANY_ID,
497 0, 0,
498 (kernel_ulong_t)&card_info_5mbit
499 },
500 {
501 0x1571, 0xa00d,
502 PCI_ANY_ID, PCI_ANY_ID,
503 0, 0,
504 (kernel_ulong_t)&card_info_5mbit
505 },
506 {
507 0x1571, 0xa00e,
508 PCI_ANY_ID, PCI_ANY_ID,
509 0, 0,
510 (kernel_ulong_t)&card_info_5mbit
511 },
512 {
513 0x1571, 0xa201,
514 PCI_ANY_ID, PCI_ANY_ID,
515 0, 0,
516 (kernel_ulong_t)&card_info_10mbit
517 },
518 {
519 0x1571, 0xa202,
520 PCI_ANY_ID, PCI_ANY_ID,
521 0, 0,
522 (kernel_ulong_t)&card_info_10mbit
523 },
524 {
525 0x1571, 0xa203,
526 PCI_ANY_ID, PCI_ANY_ID,
527 0, 0,
528 (kernel_ulong_t)&card_info_10mbit
529 },
530 {
531 0x1571, 0xa204,
532 PCI_ANY_ID, PCI_ANY_ID,
533 0, 0,
534 (kernel_ulong_t)&card_info_10mbit
535 },
536 {
537 0x1571, 0xa205,
538 PCI_ANY_ID, PCI_ANY_ID,
539 0, 0,
540 (kernel_ulong_t)&card_info_10mbit
541 },
542 {
543 0x1571, 0xa206,
544 PCI_ANY_ID, PCI_ANY_ID,
545 0, 0,
546 (kernel_ulong_t)&card_info_10mbit
547 },
548 {
549 0x10B5, 0x9030,
550 0x10B5, 0x2978,
551 0, 0,
552 (kernel_ulong_t)&card_info_sohard
553 },
554 {
555 0x10B5, 0x9050,
556 0x10B5, 0x2273,
557 0, 0,
558 (kernel_ulong_t)&card_info_sohard
559 },
560 {
561 0x10B5, 0x9050,
562 0x10B5, 0x3263,
563 0, 0,
564 (kernel_ulong_t)&card_info_eae_arc1
565 },
566 {
567 0x10B5, 0x9050,
568 0x10B5, 0x3292,
569 0, 0,
570 (kernel_ulong_t)&card_info_eae_ma1
571 },
572 {
573 0x10B5, 0x9050,
574 0x10B5, 0x3294,
575 0, 0,
576 (kernel_ulong_t)&card_info_eae_fb2
577 },
578 {
579 0x14BA, 0x6000,
580 PCI_ANY_ID, PCI_ANY_ID,
581 0, 0,
582 (kernel_ulong_t)&card_info_10mbit
583 },
584 {
585 0x10B5, 0x2200,
586 PCI_ANY_ID, PCI_ANY_ID,
587 0, 0,
588 (kernel_ulong_t)&card_info_10mbit
589 },
590 { 0, }
591};
592
593MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
594
595static struct pci_driver com20020pci_driver = {
596 .name = "com20020",
597 .id_table = com20020pci_id_table,
598 .probe = com20020pci_probe,
599 .remove = com20020pci_remove,
600};
601
602static int __init com20020pci_init(void)
603{
604 if (BUGLVL(D_NORMAL))
605 pr_info("%s\n", "COM20020 PCI support");
606 return pci_register_driver(&com20020pci_driver);
607}
608
609static void __exit com20020pci_cleanup(void)
610{
611 pci_unregister_driver(dev: &com20020pci_driver);
612}
613
614module_init(com20020pci_init)
615module_exit(com20020pci_cleanup)
616

source code of linux/drivers/net/arcnet/com20020-pci.c