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 | |
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: !!value, port: priv->misc + ci->leds[card->index].green); |
80 | } |
81 | |
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: !!value, port: priv->misc + ci->leds[card->index].red); |
95 | } |
96 | |
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(dev: net_dev); |
103 | |
104 | return sprintf(buf, fmt: "%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 | |
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(dev: pdev)) |
134 | return -EIO; |
135 | |
136 | priv = devm_kzalloc(dev: &pdev->dev, size: 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, data: priv); |
149 | |
150 | INIT_LIST_HEAD(list: &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(name: 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, addr: 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(port: 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(port: priv->misc + ci->rotary) >> 4) & dev_id_mask; |
222 | snprintf(buf: dev->name, size: sizeof(dev->name), fmt: "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(dev: &pdev->dev, size: 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(dev: &pdev->dev, |
252 | GFP_KERNEL, fmt: "arc%d-%d-tx" , |
253 | dev->dev_id, i); |
254 | card->tx_led.name = devm_kasprintf(dev: &pdev->dev, GFP_KERNEL, |
255 | fmt: "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(dev: &pdev->dev, |
261 | GFP_KERNEL, fmt: "arc%d-%d-recon" , |
262 | dev->dev_id, i); |
263 | card->recon_led.name = devm_kasprintf(dev: &pdev->dev, GFP_KERNEL, |
264 | fmt: "pci:red:recon:%d-%d" , |
265 | dev->dev_id, i); |
266 | card->recon_led.dev = &dev->dev; |
267 | |
268 | ret = devm_led_classdev_register(parent: &pdev->dev, led_cdev: &card->tx_led); |
269 | if (ret) |
270 | goto err_free_arcdev; |
271 | |
272 | ret = devm_led_classdev_register(parent: &pdev->dev, led_cdev: &card->recon_led); |
273 | if (ret) |
274 | goto err_free_arcdev; |
275 | |
276 | dev_set_drvdata(dev: &dev->dev, data: card); |
277 | devm_arcnet_led_init(netdev: dev, index: dev->dev_id, subid: i); |
278 | } |
279 | |
280 | card->dev = dev; |
281 | list_add(new: &card->list, head: &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 | |
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 | |
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 | |
613 | static void __exit com20020pci_cleanup(void) |
614 | { |
615 | pci_unregister_driver(dev: &com20020pci_driver); |
616 | } |
617 | |
618 | module_init(com20020pci_init) |
619 | module_exit(com20020pci_cleanup) |
620 | |