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GPIODEV: Fix open-count race condition.
[openwrt.git] / package / broadcom-diag / src / diag.c
1 /*
2 * diag.c - GPIO interface driver for Broadcom boards
3 *
4 * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
5 * Copyright (C) 2006-2007 Felix Fietkau <nbd@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 *
21 * $Id$
22 */
23 #include <linux/module.h>
24 #include <linux/pci.h>
25 #include <linux/kmod.h>
26 #include <linux/proc_fs.h>
27 #include <linux/timer.h>
28 #include <linux/version.h>
29 #include <asm/uaccess.h>
30
31 #ifndef LINUX_2_4
32 #include <linux/workqueue.h>
33 #include <linux/skbuff.h>
34 #include <linux/netlink.h>
35 #include <net/sock.h>
36 extern struct sock *uevent_sock;
37 extern u64 uevent_next_seqnum(void);
38 #else
39 #include <linux/tqueue.h>
40 #define INIT_WORK INIT_TQUEUE
41 #define schedule_work schedule_task
42 #define work_struct tq_struct
43 #endif
44
45 #include "gpio.h"
46 #include "diag.h"
47 #define getvar(str) (nvram_get(str)?:"")
48
49 static int fill_event(struct event_t *);
50 static unsigned int gpiomask = 0;
51 module_param(gpiomask, int, 0644);
52
53 enum {
54 /* Linksys */
55 WAP54GV1,
56 WAP54GV3,
57 WRT54GV1,
58 WRT54G,
59 WRTSL54GS,
60 WRT54G3G,
61 WRT350N,
62
63 /* ASUS */
64 WLHDD,
65 WL300G,
66 WL500G,
67 WL500GD,
68 WL500GP,
69 WL500W,
70 ASUS_4702,
71 WL700GE,
72
73 /* Buffalo */
74 WBR2_G54,
75 WHR_G54S,
76 WHR_HP_G54,
77 WHR_G125,
78 WHR2_A54G54,
79 WLA2_G54L,
80 WZR_G300N,
81 WZR_RS_G54,
82 WZR_RS_G54HP,
83 BUFFALO_UNKNOWN,
84 BUFFALO_UNKNOWN_4710,
85
86 /* Siemens */
87 SE505V1,
88 SE505V2,
89
90 /* US Robotics */
91 USR5461,
92
93 /* Dell */
94 TM2300,
95
96 /* Motorola */
97 WE800G,
98 WR850GV1,
99 WR850GV2V3,
100 WR850GP,
101
102 /* Belkin */
103 BELKIN_UNKNOWN,
104
105 /* Netgear */
106 WGT634U,
107
108 /* Trendware */
109 TEW411BRPP,
110
111 /* SimpleTech */
112 STI_NAS,
113
114 /* D-Link */
115 DIR130,
116 DIR330,
117 DWL3150,
118
119 /* Sitecom */
120 WL105B,
121 };
122
123 static void __init bcm4780_init(void) {
124 int pin = 1 << 3;
125
126 /* Enables GPIO 3 that controls HDD and led power on ASUS WL-700gE */
127 printk(MODULE_NAME ": Spinning up HDD and enabling leds\n");
128 gpio_outen(pin, pin);
129 gpio_control(pin, 0);
130 gpio_out(pin, pin);
131
132 /* Wait 5s, so the HDD can spin up */
133 set_current_state(TASK_INTERRUPTIBLE);
134 schedule_timeout(HZ * 5);
135 }
136
137 static void __init bcm57xx_init(void) {
138 int pin = 1 << 2;
139
140 gpio_outen(pin, pin);
141 gpio_control(pin, 0);
142 gpio_out(pin, pin);
143 }
144
145 static struct platform_t __initdata platforms[] = {
146 /* Linksys */
147 [WAP54GV1] = {
148 .name = "Linksys WAP54G V1",
149 .buttons = {
150 { .name = "reset", .gpio = 1 << 0 },
151 },
152 .leds = {
153 { .name = "diag", .gpio = 1 << 3 },
154 { .name = "wlan", .gpio = 1 << 4 },
155 },
156 },
157 [WAP54GV3] = {
158 .name = "Linksys WAP54G V3",
159 .buttons = {
160 /* FIXME: verify this */
161 { .name = "reset", .gpio = 1 << 7 },
162 { .name = "ses", .gpio = 1 << 0 },
163 },
164 .leds = {
165 /* FIXME: diag? */
166 { .name = "ses", .gpio = 1 << 1 },
167 },
168 },
169 [WRT54GV1] = {
170 .name = "Linksys WRT54G V1.x",
171 .buttons = {
172 { .name = "reset", .gpio = 1 << 6 },
173 },
174 .leds = {
175 { .name = "diag", .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
176 { .name = "dmz", .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
177 },
178 },
179 [WRT54G] = {
180 .name = "Linksys WRT54G/GS/GL",
181 .buttons = {
182 { .name = "reset", .gpio = 1 << 6 },
183 { .name = "ses", .gpio = 1 << 4 },
184 },
185 .leds = {
186 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
187 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
188 { .name = "ses_white", .gpio = 1 << 2, .polarity = REVERSE },
189 { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
190 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
191 },
192 },
193 [WRTSL54GS] = {
194 .name = "Linksys WRTSL54GS",
195 .buttons = {
196 { .name = "reset", .gpio = 1 << 6 },
197 { .name = "ses", .gpio = 1 << 4 },
198 },
199 .leds = {
200 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
201 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
202 { .name = "ses_white", .gpio = 1 << 5, .polarity = REVERSE },
203 { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
204 },
205 },
206 [WRT54G3G] = {
207 .name = "Linksys WRT54G3G",
208 .buttons = {
209 { .name = "reset", .gpio = 1 << 6 },
210 { .name = "3g", .gpio = 1 << 4 },
211 },
212 .leds = {
213 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
214 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
215 { .name = "3g_green", .gpio = 1 << 2, .polarity = NORMAL },
216 { .name = "3g_blue", .gpio = 1 << 3, .polarity = NORMAL },
217 { .name = "3g_blink", .gpio = 1 << 5, .polarity = NORMAL },
218 },
219 },
220 [WRT350N] = {
221 .name = "Linksys WRT350N",
222 .buttons = {
223 { .name = "reset", .gpio = 1 << 6 },
224 { .name = "ses", .gpio = 1 << 8 },
225 },
226 .leds = {
227 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
228 { .name = "ses_amber", .gpio = 1 << 3, .polarity = REVERSE },
229 { .name = "ses_green", .gpio = 1 << 9, .polarity = REVERSE },
230 { .name = "usb_blink", .gpio = 1 << 10, .polarity = REVERSE },
231 { .name = "usb", .gpio = 1 << 11, .polarity = REVERSE },
232 },
233 .platform_init = bcm57xx_init,
234 },
235 /* Asus */
236 [WLHDD] = {
237 .name = "ASUS WL-HDD",
238 .buttons = {
239 { .name = "reset", .gpio = 1 << 6 },
240 },
241 .leds = {
242 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
243 { .name = "usb", .gpio = 1 << 2, .polarity = NORMAL },
244 },
245 },
246 [WL300G] = {
247 .name = "ASUS WL-300g",
248 .buttons = {
249 { .name = "reset", .gpio = 1 << 6 },
250 },
251 .leds = {
252 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
253 },
254 },
255 [WL500G] = {
256 .name = "ASUS WL-500g",
257 .buttons = {
258 { .name = "reset", .gpio = 1 << 6 },
259 },
260 .leds = {
261 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
262 },
263 },
264 [WL500GD] = {
265 .name = "ASUS WL-500g Deluxe",
266 .buttons = {
267 { .name = "reset", .gpio = 1 << 6 },
268 },
269 .leds = {
270 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
271 },
272 },
273 [WL500GP] = {
274 .name = "ASUS WL-500g Premium",
275 .buttons = {
276 { .name = "reset", .gpio = 1 << 0 },
277 { .name = "ses", .gpio = 1 << 4 },
278 },
279 .leds = {
280 { .name = "power", .gpio = 1 << 1, .polarity = REVERSE },
281 },
282 },
283 [WL500W] = {
284 .name = "ASUS WL-500W",
285 .buttons = {
286 { .name = "reset", .gpio = 1 << 6 },
287 { .name = "ses", .gpio = 1 << 7 },
288 },
289 .leds = {
290 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
291 },
292 },
293 [ASUS_4702] = {
294 .name = "ASUS (unknown, BCM4702)",
295 .buttons = {
296 { .name = "reset", .gpio = 1 << 6 },
297 },
298 .leds = {
299 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
300 },
301 },
302 [WL700GE] = {
303 .name = "ASUS WL-700gE",
304 .buttons = {
305 { .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
306 { .name = "ses", .gpio = 1 << 4 }, // on back, actual name ezsetup
307 { .name = "power", .gpio = 1 << 0 }, // on front
308 { .name = "copy", .gpio = 1 << 6 }, // on front
309 },
310 .leds = {
311 #if 0
312 // GPIO that controls power led also enables/disables some essential functions
313 // - power to HDD
314 // - switch leds
315 { .name = "power", .gpio = 1 << 3, .polarity = NORMAL }, // actual name power
316 #endif
317 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
318 },
319 .platform_init = bcm4780_init,
320 },
321 /* Buffalo */
322 [WHR_G54S] = {
323 .name = "Buffalo WHR-G54S",
324 .buttons = {
325 { .name = "reset", .gpio = 1 << 4 },
326 { .name = "bridge", .gpio = 1 << 5 },
327 { .name = "ses", .gpio = 1 << 0 },
328 },
329 .leds = {
330 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
331 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
332 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
333 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
334 { .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
335 },
336 },
337 [WBR2_G54] = {
338 .name = "Buffalo WBR2-G54",
339 /* FIXME: verify */
340 .buttons = {
341 { .name = "reset", .gpio = 1 << 7 },
342 },
343 .leds = {
344 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
345 },
346 },
347 [WHR_HP_G54] = {
348 .name = "Buffalo WHR-HP-G54",
349 .buttons = {
350 { .name = "reset", .gpio = 1 << 4 },
351 { .name = "bridge", .gpio = 1 << 5 },
352 { .name = "ses", .gpio = 1 << 0 },
353 },
354 .leds = {
355 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
356 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
357 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
358 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
359 { .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
360 },
361 },
362 [WHR_G125] = {
363 .name = "Buffalo WHR-G125",
364 .buttons = {
365 { .name = "reset", .gpio = 1 << 4 },
366 { .name = "bridge", .gpio = 1 << 5 },
367 { .name = "ses", .gpio = 1 << 0 },
368 },
369 .leds = {
370 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
371 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
372 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
373 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
374 { .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
375 },
376 },
377 [WHR2_A54G54] = {
378 .name = "Buffalo WHR2-A54G54",
379 .buttons = {
380 { .name = "reset", .gpio = 1 << 4 },
381 },
382 .leds = {
383 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
384 },
385 },
386 [WLA2_G54L] = {
387 .name = "Buffalo WLA2-G54L",
388 /* FIXME: verify */
389 .buttons = {
390 { .name = "reset", .gpio = 1 << 7 },
391 },
392 .leds = {
393 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
394 },
395 },
396 [WZR_G300N] = {
397 .name = "Buffalo WZR-G300N",
398 .buttons = {
399 { .name = "reset", .gpio = 1 << 4 },
400 },
401 .leds = {
402 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
403 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
404 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
405 },
406 },
407 [WZR_RS_G54] = {
408 .name = "Buffalo WZR-RS-G54",
409 .buttons = {
410 { .name = "ses", .gpio = 1 << 0 },
411 { .name = "reset", .gpio = 1 << 4 },
412 },
413 .leds = {
414 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
415 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
416 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
417 },
418 },
419 [WZR_RS_G54HP] = {
420 .name = "Buffalo WZR-RS-G54HP",
421 .buttons = {
422 { .name = "ses", .gpio = 1 << 0 },
423 { .name = "reset", .gpio = 1 << 4 },
424 },
425 .leds = {
426 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
427 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
428 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
429 },
430 },
431 [BUFFALO_UNKNOWN] = {
432 .name = "Buffalo (unknown)",
433 .buttons = {
434 { .name = "reset", .gpio = 1 << 7 },
435 },
436 .leds = {
437 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
438 },
439 },
440 [BUFFALO_UNKNOWN_4710] = {
441 .name = "Buffalo (unknown, BCM4710)",
442 .buttons = {
443 { .name = "reset", .gpio = 1 << 4 },
444 },
445 .leds = {
446 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
447 },
448 },
449 /* Siemens */
450 [SE505V1] = {
451 .name = "Siemens SE505 V1",
452 .buttons = {
453 /* No usable buttons */
454 },
455 .leds = {
456 { .name = "dmz", .gpio = 1 << 4, .polarity = REVERSE },
457 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
458 },
459 },
460 [SE505V2] = {
461 .name = "Siemens SE505 V2",
462 .buttons = {
463 /* No usable buttons */
464 },
465 .leds = {
466 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
467 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
468 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
469 },
470 },
471 /* US Robotics */
472 [USR5461] = {
473 .name = "U.S. Robotics USR5461",
474 .buttons = {
475 /* No usable buttons */
476 },
477 .leds = {
478 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
479 { .name = "printer", .gpio = 1 << 1, .polarity = REVERSE },
480 },
481 },
482 /* Dell */
483 [TM2300] = {
484 .name = "Dell TrueMobile 2300",
485 .buttons = {
486 { .name = "reset", .gpio = 1 << 0 },
487 },
488 .leds = {
489 { .name = "wlan", .gpio = 1 << 6, .polarity = REVERSE },
490 { .name = "power", .gpio = 1 << 7, .polarity = REVERSE },
491 },
492 },
493 /* Motorola */
494 [WE800G] = {
495 .name = "Motorola WE800G",
496 .buttons = {
497 { .name = "reset", .gpio = 1 << 0 },
498 },
499 .leds = {
500 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
501 { .name = "diag", .gpio = 1 << 2, .polarity = REVERSE },
502 { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
503 },
504 },
505 [WR850GV1] = {
506 .name = "Motorola WR850G V1",
507 .buttons = {
508 { .name = "reset", .gpio = 1 << 0 },
509 },
510 .leds = {
511 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
512 { .name = "diag", .gpio = 1 << 3, .polarity = REVERSE },
513 { .name = "dmz", .gpio = 1 << 6, .polarity = NORMAL },
514 { .name = "wlan_red", .gpio = 1 << 5, .polarity = REVERSE },
515 { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
516 },
517 },
518 [WR850GV2V3] = {
519 .name = "Motorola WR850G V2/V3",
520 .buttons = {
521 { .name = "reset", .gpio = 1 << 5 },
522 },
523 .leds = {
524 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
525 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
526 { .name = "wan", .gpio = 1 << 6, .polarity = INPUT },
527 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
528 },
529 },
530 [WR850GP] = {
531 .name = "Motorola WR850GP",
532 .buttons = {
533 { .name = "reset", .gpio = 1 << 5 },
534 },
535 .leds = {
536 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
537 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
538 { .name = "dmz", .gpio = 1 << 6, .polarity = REVERSE },
539 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
540 },
541 },
542
543 /* Belkin */
544 [BELKIN_UNKNOWN] = {
545 .name = "Belkin (unknown)",
546 /* FIXME: verify & add detection */
547 .buttons = {
548 { .name = "reset", .gpio = 1 << 7 },
549 },
550 .leds = {
551 { .name = "power", .gpio = 1 << 5, .polarity = NORMAL },
552 { .name = "wlan", .gpio = 1 << 3, .polarity = NORMAL },
553 { .name = "connected", .gpio = 1 << 0, .polarity = NORMAL },
554 },
555 },
556 /* Netgear */
557 [WGT634U] = {
558 .name = "Netgear WGT634U",
559 .buttons = {
560 { .name = "reset", .gpio = 1 << 2 },
561 },
562 .leds = {
563 { .name = "power", .gpio = 1 << 3, .polarity = NORMAL },
564 },
565 },
566 /* Trendware */
567 [TEW411BRPP] = {
568 .name = "Trendware TEW411BRP+",
569 .buttons = {
570 { /* No usable buttons */ },
571 },
572 .leds = {
573 { .name = "power", .gpio = 1 << 7, .polarity = NORMAL },
574 { .name = "wlan", .gpio = 1 << 1, .polarity = NORMAL },
575 { .name = "bridge", .gpio = 1 << 6, .polarity = NORMAL },
576 },
577 },
578 /* SimpleTech */
579 [STI_NAS] = {
580 .name = "SimpleTech SimpleShare NAS",
581 .buttons = {
582 { .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
583 { .name = "power", .gpio = 1 << 0 }, // on back
584 },
585 .leds = {
586 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
587 },
588 .platform_init = bcm4780_init,
589 },
590 /* D-Link */
591 [DIR130] = {
592 .name = "D-Link DIR-130",
593 .buttons = {
594 { .name = "reset", .gpio = 1 << 3},
595 { .name = "reserved", .gpio = 1 << 7},
596 },
597 .leds = {
598 { .name = "diag", .gpio = 1 << 0},
599 { .name = "blue", .gpio = 1 << 6},
600 },
601 },
602 [DIR330] = {
603 .name = "D-Link DIR-330",
604 .buttons = {
605 { .name = "reset", .gpio = 1 << 3},
606 { .name = "reserved", .gpio = 1 << 7},
607 },
608 .leds = {
609 { .name = "diag", .gpio = 1 << 0},
610 { .name = "usb", .gpio = 1 << 4},
611 { .name = "blue", .gpio = 1 << 6},
612 },
613 },
614 [DWL3150] = {
615 .name = "D-Link DWL-3150",
616 .buttons = {
617 { .name = "reset", .gpio = 1 << 7},
618 },
619 .leds = {
620 { .name = "diag", .gpio = 1 << 2},
621 { .name = "status", .gpio = 1 << 1},
622 },
623 },
624 /* Double check */
625 [WL105B] = {
626 .name = "Sitecom WL-105b",
627 .buttons = {
628 { .name = "reset", .gpio = 1 << 10},
629 },
630 .leds = {
631 { .name = "wlan", .gpio = 1 << 4},
632 { .name = "power", .gpio = 1 << 3},
633 },
634 },
635 };
636
637 static struct platform_t __init *platform_detect(void)
638 {
639 char *boardnum, *boardtype, *buf;
640
641 if (strcmp(getvar("nvram_type"), "cfe") == 0)
642 return &platforms[WGT634U];
643
644 /* Look for a model identifier */
645
646 /* Based on "model_name" */
647 if (buf = nvram_get("model_name")) {
648 if (!strcmp(buf, "DIR-130"))
649 return &platforms[DIR130];
650 if (!strcmp(buf, "DIR-330"))
651 return &platforms[DIR330];
652 }
653
654 /* Based on "model_no" */
655 if (buf = nvram_get("model_no")) {
656 if (!strncmp(buf,"WL700", 5)) /* WL700* */
657 return &platforms[WL700GE];
658 }
659
660 /* Based on "ModelId" */
661 if (buf = nvram_get("ModelId")) {
662 if (!strcmp(buf, "WR850GP"))
663 return &platforms[WR850GP];
664 if (!strcmp(buf,"WX-5565"))
665 return &platforms[TM2300];
666 if (!strncmp(buf,"WE800G", 6)) /* WE800G* */
667 return &platforms[WE800G];
668 }
669
670 /* Buffalo */
671 if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
672 /* Buffalo hardware, check id for specific hardware matches */
673 if (!strcmp(buf, "29bb0332"))
674 return &platforms[WBR2_G54];
675 if (!strcmp(buf, "29129"))
676 return &platforms[WLA2_G54L];
677 if (!strcmp(buf, "30189"))
678 return &platforms[WHR_HP_G54];
679 if (!strcmp(buf, "32093"))
680 return &platforms[WHR_G125];
681 if (!strcmp(buf, "30182"))
682 return &platforms[WHR_G54S];
683 if (!strcmp(buf, "290441dd"))
684 return &platforms[WHR2_A54G54];
685 if (!strcmp(buf, "31120"))
686 return &platforms[WZR_G300N];
687 if (!strcmp(buf, "30083"))
688 return &platforms[WZR_RS_G54];
689 if (!strcmp(buf, "30103"))
690 return &platforms[WZR_RS_G54HP];
691 }
692
693 /* no easy model number, attempt to guess */
694 boardnum = getvar("boardnum");
695 boardtype = getvar("boardtype");
696
697 if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
698 /* CFE based - newer hardware */
699 if (!strcmp(boardnum, "42")) { /* Linksys */
700 if (!strcmp(boardtype, "0x478") && !strcmp(getvar("cardbus"), "1"))
701 return &platforms[WRT350N];
702
703 if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
704 return &platforms[WRT54G3G];
705
706 if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
707 return &platforms[WRTSL54GS];
708
709 /* default to WRT54G */
710 return &platforms[WRT54G];
711 }
712
713 if (!strcmp(boardnum, "45")) { /* ASUS */
714 if (!strcmp(boardtype,"0x042f"))
715 return &platforms[WL500GP];
716 else if (!strcmp(boardtype,"0x0472"))
717 return &platforms[WL500W];
718 else
719 return &platforms[WL500GD];
720 }
721
722 if (!strcmp(boardnum, "10496"))
723 return &platforms[USR5461];
724
725 } else { /* PMON based - old stuff */
726 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
727 (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
728 return &platforms[WR850GV1];
729 }
730 if (!strncmp(boardtype, "bcm94710dev", 11)) {
731 if (!strcmp(boardnum, "42"))
732 return &platforms[WRT54GV1];
733 if (simple_strtoul(boardnum, NULL, 0) == 2)
734 return &platforms[WAP54GV1];
735 }
736 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
737 return &platforms[WL500G];
738 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
739 /* Either WL-300g or WL-HDD, do more extensive checks */
740 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
741 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
742 return &platforms[WLHDD];
743 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
744 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
745 return &platforms[WL300G];
746 }
747 /* Sitecom WL-105b */
748 if (!strncmp(boardnum, "2", 1) && simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 1)
749 return &platforms[WL105B];
750
751 /* unknown asus stuff, probably bcm4702 */
752 if (!strncmp(boardnum, "asusX", 5))
753 return &platforms[ASUS_4702];
754 }
755
756 if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
757 if (!strncmp(boardtype, "bcm94710ap", 10))
758 return &platforms[BUFFALO_UNKNOWN_4710];
759 else
760 return &platforms[BUFFALO_UNKNOWN];
761 }
762
763 if (!strncmp(getvar("CFEver"), "MotoWRv2", 8) ||
764 !strncmp(getvar("CFEver"), "MotoWRv3", 8) ||
765 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
766
767 return &platforms[WR850GV2V3];
768 }
769
770 if (!strcmp(boardnum, "44") && !strcmp(getvar("boardflags"),"0x0388")) { /* Trendware TEW-411BRP+ */
771 return &platforms[TEW411BRPP];
772 }
773
774 if (!strncmp(boardnum, "04FN52", 6)) /* SimpleTech SimpleShare */
775 return &platforms[STI_NAS];
776
777 if (!strcmp(getvar("boardnum"), "10") && !strcmp(getvar("boardrev"), "0x13")) /* D-Link DWL-3150 */
778 return &platforms[DWL3150];
779
780 /* not found */
781 return NULL;
782 }
783
784 static void register_buttons(struct button_t *b)
785 {
786 for (; b->name; b++)
787 platform.button_mask |= b->gpio;
788
789 platform.button_mask &= ~gpiomask;
790
791 gpio_outen(platform.button_mask, 0);
792 gpio_control(platform.button_mask, 0);
793 platform.button_polarity = gpio_in() & platform.button_mask;
794 gpio_intpolarity(platform.button_mask, platform.button_polarity);
795 gpio_intmask(platform.button_mask, platform.button_mask);
796
797 gpio_set_irqenable(1, button_handler);
798 }
799
800 static void unregister_buttons(struct button_t *b)
801 {
802 gpio_intmask(platform.button_mask, 0);
803
804 gpio_set_irqenable(0, button_handler);
805 }
806
807
808 #ifndef LINUX_2_4
809 static void add_msg(struct event_t *event, char *msg, int argv)
810 {
811 char *s;
812
813 if (argv)
814 return;
815
816 s = skb_put(event->skb, strlen(msg) + 1);
817 strcpy(s, msg);
818 }
819
820 static void hotplug_button(struct work_struct *work)
821 {
822 struct event_t *event = container_of(work, struct event_t, wq);
823 char *s;
824
825 if (!uevent_sock)
826 return;
827
828 event->skb = alloc_skb(2048, GFP_KERNEL);
829
830 s = skb_put(event->skb, strlen(event->action) + 2);
831 sprintf(s, "%s@", event->action);
832 fill_event(event);
833
834 NETLINK_CB(event->skb).dst_group = 1;
835 netlink_broadcast(uevent_sock, event->skb, 0, 1, GFP_KERNEL);
836
837 kfree(event);
838 }
839
840 #else /* !LINUX_2_4 */
841 static inline char *kzalloc(unsigned int size, unsigned int gfp)
842 {
843 char *p;
844
845 p = kmalloc(size, gfp);
846 if (p == NULL)
847 return NULL;
848
849 memset(p, 0, size);
850
851 return p;
852 }
853
854 static void add_msg(struct event_t *event, char *msg, int argv)
855 {
856 if (argv)
857 event->argv[event->anr++] = event->scratch;
858 else
859 event->envp[event->enr++] = event->scratch;
860
861 event->scratch += sprintf(event->scratch, "%s", msg) + 1;
862 }
863
864 static void hotplug_button(struct event_t *event)
865 {
866 char *scratch = kzalloc(256, GFP_KERNEL);
867 event->scratch = scratch;
868
869 add_msg(event, hotplug_path, 1);
870 add_msg(event, "button", 1);
871 fill_event(event);
872 call_usermodehelper (event->argv[0], event->argv, event->envp);
873 kfree(scratch);
874 kfree(event);
875 }
876 #endif /* !LINUX_2_4 */
877
878 static int fill_event (struct event_t *event)
879 {
880 static char buf[128];
881
882 add_msg(event, "HOME=/", 0);
883 add_msg(event, "PATH=/sbin:/bin:/usr/sbin:/usr/bin", 0);
884 add_msg(event, "SUBSYSTEM=button", 0);
885 snprintf(buf, 128, "ACTION=%s", event->action);
886 add_msg(event, buf, 0);
887 snprintf(buf, 128, "BUTTON=%s", event->name);
888 add_msg(event, buf, 0);
889 snprintf(buf, 128, "SEEN=%ld", event->seen);
890 add_msg(event, buf, 0);
891 #ifndef LINUX_2_4
892 snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum());
893 add_msg(event, buf, 0);
894 #endif
895
896 return 0;
897 }
898
899
900 #ifndef LINUX_2_4
901 static irqreturn_t button_handler(int irq, void *dev_id)
902 #else
903 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
904 #endif
905 {
906 struct button_t *b;
907 u32 in, changed;
908
909 in = gpio_in() & platform.button_mask;
910 gpio_intpolarity(platform.button_mask, in);
911 changed = platform.button_polarity ^ in;
912 platform.button_polarity = in;
913
914 changed &= ~gpio_outen(0, 0);
915
916 for (b = platform.buttons; b->name; b++) {
917 struct event_t *event;
918
919 if (!(b->gpio & changed)) continue;
920
921 b->pressed ^= 1;
922
923 if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
924 event->seen = (jiffies - b->seen)/HZ;
925 event->name = b->name;
926 event->action = b->pressed ? "pressed" : "released";
927 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
928 INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
929 #else
930 INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
931 #endif
932 schedule_work(&event->wq);
933 }
934
935 b->seen = jiffies;
936 }
937 return IRQ_HANDLED;
938 }
939
940 static void register_leds(struct led_t *l)
941 {
942 struct proc_dir_entry *p;
943 u32 mask = 0;
944 u32 oe_mask = 0;
945 u32 val = 0;
946
947 leds = proc_mkdir("led", diag);
948 if (!leds)
949 return;
950
951 for(; l->name; l++) {
952 if (l->gpio & gpiomask)
953 continue;
954
955 if (l->gpio & GPIO_TYPE_EXTIF) {
956 l->state = 0;
957 set_led_extif(l);
958 } else {
959 if (l->polarity != INPUT) oe_mask != l->gpio;
960 mask |= l->gpio;
961 val |= (l->polarity == NORMAL)?0:l->gpio;
962 }
963
964 if (l->polarity == INPUT) continue;
965
966 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
967 l->proc.type = PROC_LED;
968 l->proc.ptr = l;
969 p->data = (void *) &l->proc;
970 p->proc_fops = &diag_proc_fops;
971 }
972 }
973
974 gpio_outen(mask, oe_mask);
975 gpio_control(mask, 0);
976 gpio_out(mask, val);
977 }
978
979 static void unregister_leds(struct led_t *l)
980 {
981 for(; l->name; l++)
982 remove_proc_entry(l->name, leds);
983
984 remove_proc_entry("led", diag);
985 }
986
987 static void set_led_extif(struct led_t *led)
988 {
989 gpio_set_extif(led->gpio, led->state);
990 }
991
992 static void led_flash(unsigned long dummy) {
993 struct led_t *l;
994 u32 mask = 0;
995 u8 extif_blink = 0;
996
997 for (l = platform.leds; l->name; l++) {
998 if (l->flash) {
999 if (l->gpio & GPIO_TYPE_EXTIF) {
1000 extif_blink = 1;
1001 l->state = !l->state;
1002 set_led_extif(l);
1003 } else {
1004 mask |= l->gpio;
1005 }
1006 }
1007 }
1008
1009 mask &= ~gpiomask;
1010 if (mask) {
1011 u32 val = ~gpio_in();
1012
1013 gpio_outen(mask, mask);
1014 gpio_control(mask, 0);
1015 gpio_out(mask, val);
1016 }
1017 if (mask || extif_blink) {
1018 mod_timer(&led_timer, jiffies + FLASH_TIME);
1019 }
1020 }
1021
1022 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
1023 {
1024 #ifdef LINUX_2_4
1025 struct inode *inode = file->f_dentry->d_inode;
1026 struct proc_dir_entry *dent = inode->u.generic_ip;
1027 #else
1028 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
1029 #endif
1030 char *page;
1031 int len = 0;
1032
1033 if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
1034 return -ENOBUFS;
1035
1036 if (dent->data != NULL) {
1037 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
1038 switch (handler->type) {
1039 case PROC_LED: {
1040 struct led_t * led = (struct led_t *) handler->ptr;
1041 if (led->flash) {
1042 len = sprintf(page, "f\n");
1043 } else {
1044 if (led->gpio & GPIO_TYPE_EXTIF) {
1045 len = sprintf(page, "%d\n", led->state);
1046 } else {
1047 u32 in = (gpio_in() & led->gpio ? 1 : 0);
1048 u8 p = (led->polarity == NORMAL ? 0 : 1);
1049 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
1050 }
1051 }
1052 break;
1053 }
1054 case PROC_MODEL:
1055 len = sprintf(page, "%s\n", platform.name);
1056 break;
1057 case PROC_GPIOMASK:
1058 len = sprintf(page, "0x%04x\n", gpiomask);
1059 break;
1060 }
1061 }
1062 len += 1;
1063
1064 if (*ppos < len) {
1065 len = min_t(int, len - *ppos, count);
1066 if (copy_to_user(buf, (page + *ppos), len)) {
1067 kfree(page);
1068 return -EFAULT;
1069 }
1070 *ppos += len;
1071 } else {
1072 len = 0;
1073 }
1074
1075 kfree(page);
1076 return len;
1077 }
1078
1079
1080 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
1081 {
1082 #ifdef LINUX_2_4
1083 struct inode *inode = file->f_dentry->d_inode;
1084 struct proc_dir_entry *dent = inode->u.generic_ip;
1085 #else
1086 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
1087 #endif
1088 char *page;
1089 int ret = -EINVAL;
1090
1091 if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
1092 return -ENOBUFS;
1093
1094 if (copy_from_user(page, buf, count)) {
1095 kfree(page);
1096 return -EINVAL;
1097 }
1098 page[count] = 0;
1099
1100 if (dent->data != NULL) {
1101 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
1102 switch (handler->type) {
1103 case PROC_LED: {
1104 struct led_t *led = (struct led_t *) handler->ptr;
1105 int p = (led->polarity == NORMAL ? 0 : 1);
1106
1107 if (page[0] == 'f') {
1108 led->flash = 1;
1109 led_flash(0);
1110 } else {
1111 led->flash = 0;
1112 if (led->gpio & GPIO_TYPE_EXTIF) {
1113 led->state = p ^ ((page[0] == '1') ? 1 : 0);
1114 set_led_extif(led);
1115 } else {
1116 gpio_outen(led->gpio, led->gpio);
1117 gpio_control(led->gpio, 0);
1118 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
1119 }
1120 }
1121 break;
1122 }
1123 case PROC_GPIOMASK:
1124 gpiomask = simple_strtoul(page, NULL, 0);
1125
1126 if (platform.buttons) {
1127 unregister_buttons(platform.buttons);
1128 register_buttons(platform.buttons);
1129 }
1130
1131 if (platform.leds) {
1132 unregister_leds(platform.leds);
1133 register_leds(platform.leds);
1134 }
1135 break;
1136 }
1137 ret = count;
1138 }
1139
1140 kfree(page);
1141 return ret;
1142 }
1143
1144 static int __init diag_init(void)
1145 {
1146 static struct proc_dir_entry *p;
1147 static struct platform_t *detected;
1148
1149 detected = platform_detect();
1150 if (!detected) {
1151 printk(MODULE_NAME ": Router model not detected.\n");
1152 return -ENODEV;
1153 }
1154 memcpy(&platform, detected, sizeof(struct platform_t));
1155
1156 printk(MODULE_NAME ": Detected '%s'\n", platform.name);
1157 if (platform.platform_init != NULL) {
1158 platform.platform_init();
1159 }
1160
1161 if (!(diag = proc_mkdir("diag", NULL))) {
1162 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
1163 return -EINVAL;
1164 }
1165
1166 if ((p = create_proc_entry("model", S_IRUSR, diag))) {
1167 p->data = (void *) &proc_model;
1168 p->proc_fops = &diag_proc_fops;
1169 }
1170
1171 if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
1172 p->data = (void *) &proc_gpiomask;
1173 p->proc_fops = &diag_proc_fops;
1174 }
1175
1176 if (platform.buttons)
1177 register_buttons(platform.buttons);
1178
1179 if (platform.leds)
1180 register_leds(platform.leds);
1181
1182 return 0;
1183 }
1184
1185 static void __exit diag_exit(void)
1186 {
1187 del_timer(&led_timer);
1188
1189 if (platform.buttons)
1190 unregister_buttons(platform.buttons);
1191
1192 if (platform.leds)
1193 unregister_leds(platform.leds);
1194
1195 remove_proc_entry("model", diag);
1196 remove_proc_entry("gpiomask", diag);
1197 remove_proc_entry("diag", NULL);
1198 }
1199
1200 module_init(diag_init);
1201 module_exit(diag_exit);
1202
1203 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
1204 MODULE_LICENSE("GPL");
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