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 | |
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: !!value, port: priv->misc + ci->leds[card->index].green); |
79 | } |
80 | |
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: !!value, port: priv->misc + ci->leds[card->index].red); |
94 | } |
95 | |
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(dev: net_dev); |
102 | |
103 | return sprintf(buf, fmt: "%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 | |
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(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 | |
280 | err_free_arcdev: |
281 | free_arcdev(dev); |
282 | break; |
283 | } |
284 | if (ret) |
285 | com20020pci_remove(pdev); |
286 | return ret; |
287 | } |
288 | |
289 | static 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 | |
305 | static 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 | |
318 | static 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 | |
331 | static 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 | |
345 | static 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 | |
370 | static 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 | |
402 | static 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 | |
427 | static 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 | |
593 | MODULE_DEVICE_TABLE(pci, com20020pci_id_table); |
594 | |
595 | static struct pci_driver com20020pci_driver = { |
596 | .name = "com20020" , |
597 | .id_table = com20020pci_id_table, |
598 | .probe = com20020pci_probe, |
599 | .remove = com20020pci_remove, |
600 | }; |
601 | |
602 | static 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 | |
609 | static void __exit com20020pci_cleanup(void) |
610 | { |
611 | pci_unregister_driver(dev: &com20020pci_driver); |
612 | } |
613 | |
614 | module_init(com20020pci_init) |
615 | module_exit(com20020pci_cleanup) |
616 | |