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update libertas driver
[openwrt/svn-archive/archive.git] / package / libertas / src / 11d.c
1 /**
2 * This file contains functions for 802.11D.
3 */
4 #include <linux/ctype.h>
5 #include <linux/kernel.h>
6 #include <linux/wireless.h>
7
8 #include "host.h"
9 #include "decl.h"
10 #include "11d.h"
11 #include "dev.h"
12 #include "wext.h"
13
14 #define TX_PWR_DEFAULT 10
15
16 static struct region_code_mapping region_code_mapping[] = {
17 {"US ", 0x10}, /* US FCC */
18 {"CA ", 0x10}, /* IC Canada */
19 {"SG ", 0x10}, /* Singapore */
20 {"EU ", 0x30}, /* ETSI */
21 {"AU ", 0x30}, /* Australia */
22 {"KR ", 0x30}, /* Republic Of Korea */
23 {"ES ", 0x31}, /* Spain */
24 {"FR ", 0x32}, /* France */
25 {"JP ", 0x40}, /* Japan */
26 };
27
28 /* Following 2 structure defines the supported channels */
29 static struct chan_freq_power channel_freq_power_UN_BG[] = {
30 {1, 2412, TX_PWR_DEFAULT},
31 {2, 2417, TX_PWR_DEFAULT},
32 {3, 2422, TX_PWR_DEFAULT},
33 {4, 2427, TX_PWR_DEFAULT},
34 {5, 2432, TX_PWR_DEFAULT},
35 {6, 2437, TX_PWR_DEFAULT},
36 {7, 2442, TX_PWR_DEFAULT},
37 {8, 2447, TX_PWR_DEFAULT},
38 {9, 2452, TX_PWR_DEFAULT},
39 {10, 2457, TX_PWR_DEFAULT},
40 {11, 2462, TX_PWR_DEFAULT},
41 {12, 2467, TX_PWR_DEFAULT},
42 {13, 2472, TX_PWR_DEFAULT},
43 {14, 2484, TX_PWR_DEFAULT}
44 };
45
46 static u8 lbs_region_2_code(u8 *region)
47 {
48 u8 i;
49
50 for (i = 0; region[i] && i < COUNTRY_CODE_LEN; i++)
51 region[i] = toupper(region[i]);
52
53 for (i = 0; i < ARRAY_SIZE(region_code_mapping); i++) {
54 if (!memcmp(region, region_code_mapping[i].region,
55 COUNTRY_CODE_LEN))
56 return (region_code_mapping[i].code);
57 }
58
59 /* default is US */
60 return (region_code_mapping[0].code);
61 }
62
63 static u8 *lbs_code_2_region(u8 code)
64 {
65 u8 i;
66
67 for (i = 0; i < ARRAY_SIZE(region_code_mapping); i++) {
68 if (region_code_mapping[i].code == code)
69 return (region_code_mapping[i].region);
70 }
71 /* default is US */
72 return (region_code_mapping[0].region);
73 }
74
75 /**
76 * @brief This function finds the nrchan-th chan after the firstchan
77 * @param band band
78 * @param firstchan first channel number
79 * @param nrchan number of channels
80 * @return the nrchan-th chan number
81 */
82 static u8 lbs_get_chan_11d(u8 firstchan, u8 nrchan, u8 *chan)
83 /*find the nrchan-th chan after the firstchan*/
84 {
85 u8 i;
86 struct chan_freq_power *cfp;
87 u8 cfp_no;
88
89 cfp = channel_freq_power_UN_BG;
90 cfp_no = ARRAY_SIZE(channel_freq_power_UN_BG);
91
92 for (i = 0; i < cfp_no; i++) {
93 if ((cfp + i)->channel == firstchan) {
94 lbs_deb_11d("firstchan found\n");
95 break;
96 }
97 }
98
99 if (i < cfp_no) {
100 /*if beyond the boundary */
101 if (i + nrchan < cfp_no) {
102 *chan = (cfp + i + nrchan)->channel;
103 return 1;
104 }
105 }
106
107 return 0;
108 }
109
110 /**
111 * @brief This function Checks if chan txpwr is learned from AP/IBSS
112 * @param chan chan number
113 * @param parsed_region_chan pointer to parsed_region_chan_11d
114 * @return TRUE; FALSE
115 */
116 static u8 lbs_channel_known_11d(u8 chan,
117 struct parsed_region_chan_11d * parsed_region_chan)
118 {
119 struct chan_power_11d *chanpwr = parsed_region_chan->chanpwr;
120 u8 nr_chan = parsed_region_chan->nr_chan;
121 u8 i = 0;
122
123 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (char *)chanpwr,
124 sizeof(struct chan_power_11d) * nr_chan);
125
126 for (i = 0; i < nr_chan; i++) {
127 if (chan == chanpwr[i].chan) {
128 lbs_deb_11d("found chan %d\n", chan);
129 return 1;
130 }
131 }
132
133 lbs_deb_11d("chan %d not found\n", chan);
134 return 0;
135 }
136
137 u32 lbs_chan_2_freq(u8 chan)
138 {
139 struct chan_freq_power *cf;
140 u16 i;
141 u32 freq = 0;
142
143 cf = channel_freq_power_UN_BG;
144
145 for (i = 0; i < ARRAY_SIZE(channel_freq_power_UN_BG); i++) {
146 if (chan == cf[i].channel)
147 freq = cf[i].freq;
148 }
149
150 return freq;
151 }
152
153 static int generate_domain_info_11d(struct parsed_region_chan_11d
154 *parsed_region_chan,
155 struct lbs_802_11d_domain_reg *domaininfo)
156 {
157 u8 nr_subband = 0;
158
159 u8 nr_chan = parsed_region_chan->nr_chan;
160 u8 nr_parsedchan = 0;
161
162 u8 firstchan = 0, nextchan = 0, maxpwr = 0;
163
164 u8 i, flag = 0;
165
166 memcpy(domaininfo->countrycode, parsed_region_chan->countrycode,
167 COUNTRY_CODE_LEN);
168
169 lbs_deb_11d("nrchan %d\n", nr_chan);
170 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (char *)parsed_region_chan,
171 sizeof(struct parsed_region_chan_11d));
172
173 for (i = 0; i < nr_chan; i++) {
174 if (!flag) {
175 flag = 1;
176 nextchan = firstchan =
177 parsed_region_chan->chanpwr[i].chan;
178 maxpwr = parsed_region_chan->chanpwr[i].pwr;
179 nr_parsedchan = 1;
180 continue;
181 }
182
183 if (parsed_region_chan->chanpwr[i].chan == nextchan + 1 &&
184 parsed_region_chan->chanpwr[i].pwr == maxpwr) {
185 nextchan++;
186 nr_parsedchan++;
187 } else {
188 domaininfo->subband[nr_subband].firstchan = firstchan;
189 domaininfo->subband[nr_subband].nrchan =
190 nr_parsedchan;
191 domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
192 nr_subband++;
193 nextchan = firstchan =
194 parsed_region_chan->chanpwr[i].chan;
195 maxpwr = parsed_region_chan->chanpwr[i].pwr;
196 }
197 }
198
199 if (flag) {
200 domaininfo->subband[nr_subband].firstchan = firstchan;
201 domaininfo->subband[nr_subband].nrchan = nr_parsedchan;
202 domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
203 nr_subband++;
204 }
205 domaininfo->nr_subband = nr_subband;
206
207 lbs_deb_11d("nr_subband=%x\n", domaininfo->nr_subband);
208 lbs_deb_hex(LBS_DEB_11D, "domaininfo", (char *)domaininfo,
209 COUNTRY_CODE_LEN + 1 +
210 sizeof(struct ieeetypes_subbandset) * nr_subband);
211 return 0;
212 }
213
214 /**
215 * @brief This function generates parsed_region_chan from Domain Info learned from AP/IBSS
216 * @param region_chan pointer to struct region_channel
217 * @param *parsed_region_chan pointer to parsed_region_chan_11d
218 * @return N/A
219 */
220 static void lbs_generate_parsed_region_chan_11d(struct region_channel *region_chan,
221 struct parsed_region_chan_11d *
222 parsed_region_chan)
223 {
224 u8 i;
225 struct chan_freq_power *cfp;
226
227 if (region_chan == NULL) {
228 lbs_deb_11d("region_chan is NULL\n");
229 return;
230 }
231
232 cfp = region_chan->CFP;
233 if (cfp == NULL) {
234 lbs_deb_11d("cfp is NULL \n");
235 return;
236 }
237
238 parsed_region_chan->band = region_chan->band;
239 parsed_region_chan->region = region_chan->region;
240 memcpy(parsed_region_chan->countrycode,
241 lbs_code_2_region(region_chan->region), COUNTRY_CODE_LEN);
242
243 lbs_deb_11d("region 0x%x, band %d\n", parsed_region_chan->region,
244 parsed_region_chan->band);
245
246 for (i = 0; i < region_chan->nrcfp; i++, cfp++) {
247 parsed_region_chan->chanpwr[i].chan = cfp->channel;
248 parsed_region_chan->chanpwr[i].pwr = cfp->maxtxpower;
249 lbs_deb_11d("chan %d, pwr %d\n",
250 parsed_region_chan->chanpwr[i].chan,
251 parsed_region_chan->chanpwr[i].pwr);
252 }
253 parsed_region_chan->nr_chan = region_chan->nrcfp;
254
255 lbs_deb_11d("nrchan %d\n", parsed_region_chan->nr_chan);
256
257 return;
258 }
259
260 /**
261 * @brief generate parsed_region_chan from Domain Info learned from AP/IBSS
262 * @param region region ID
263 * @param band band
264 * @param chan chan
265 * @return TRUE;FALSE
266 */
267 static u8 lbs_region_chan_supported_11d(u8 region, u8 chan)
268 {
269 struct chan_freq_power *cfp;
270 int cfp_no;
271 u8 idx;
272 int ret = 0;
273
274 lbs_deb_enter(LBS_DEB_11D);
275
276 cfp = lbs_get_region_cfp_table(region, &cfp_no);
277 if (cfp == NULL)
278 return 0;
279
280 for (idx = 0; idx < cfp_no; idx++) {
281 if (chan == (cfp + idx)->channel) {
282 /* If Mrvl Chip Supported? */
283 if ((cfp + idx)->unsupported) {
284 ret = 0;
285 } else {
286 ret = 1;
287 }
288 goto done;
289 }
290 }
291
292 /*chan is not in the region table */
293
294 done:
295 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
296 return ret;
297 }
298
299 /**
300 * @brief This function checks if chan txpwr is learned from AP/IBSS
301 * @param chan chan number
302 * @param parsed_region_chan pointer to parsed_region_chan_11d
303 * @return 0
304 */
305 static int parse_domain_info_11d(struct ieeetypes_countryinfofullset*
306 countryinfo,
307 u8 band,
308 struct parsed_region_chan_11d *
309 parsed_region_chan)
310 {
311 u8 nr_subband, nrchan;
312 u8 lastchan, firstchan;
313 u8 region;
314 u8 curchan = 0;
315
316 u8 idx = 0; /*chan index in parsed_region_chan */
317
318 u8 j, i;
319
320 lbs_deb_enter(LBS_DEB_11D);
321
322 /*validation Rules:
323 1. valid region Code
324 2. First Chan increment
325 3. channel range no overlap
326 4. channel is valid?
327 5. channel is supported by region?
328 6. Others
329 */
330
331 lbs_deb_hex(LBS_DEB_11D, "countryinfo", (u8 *) countryinfo, 30);
332
333 if ((*(countryinfo->countrycode)) == 0
334 || (countryinfo->len <= COUNTRY_CODE_LEN)) {
335 /* No region Info or Wrong region info: treat as No 11D info */
336 goto done;
337 }
338
339 /*Step1: check region_code */
340 parsed_region_chan->region = region =
341 lbs_region_2_code(countryinfo->countrycode);
342
343 lbs_deb_11d("regioncode=%x\n", (u8) parsed_region_chan->region);
344 lbs_deb_hex(LBS_DEB_11D, "countrycode", (char *)countryinfo->countrycode,
345 COUNTRY_CODE_LEN);
346
347 parsed_region_chan->band = band;
348
349 memcpy(parsed_region_chan->countrycode, countryinfo->countrycode,
350 COUNTRY_CODE_LEN);
351
352 nr_subband = (countryinfo->len - COUNTRY_CODE_LEN) /
353 sizeof(struct ieeetypes_subbandset);
354
355 for (j = 0, lastchan = 0; j < nr_subband; j++) {
356
357 if (countryinfo->subband[j].firstchan <= lastchan) {
358 /*Step2&3. Check First Chan Num increment and no overlap */
359 lbs_deb_11d("chan %d>%d, overlap\n",
360 countryinfo->subband[j].firstchan, lastchan);
361 continue;
362 }
363
364 firstchan = countryinfo->subband[j].firstchan;
365 nrchan = countryinfo->subband[j].nrchan;
366
367 for (i = 0; idx < MAX_NO_OF_CHAN && i < nrchan; i++) {
368 /*step4: channel is supported? */
369
370 if (!lbs_get_chan_11d(firstchan, i, &curchan)) {
371 /* Chan is not found in UN table */
372 lbs_deb_11d("chan is not supported: %d \n", i);
373 break;
374 }
375
376 lastchan = curchan;
377
378 if (lbs_region_chan_supported_11d(region, curchan)) {
379 /*step5: Check if curchan is supported by mrvl in region */
380 parsed_region_chan->chanpwr[idx].chan = curchan;
381 parsed_region_chan->chanpwr[idx].pwr =
382 countryinfo->subband[j].maxtxpwr;
383 idx++;
384 } else {
385 /*not supported and ignore the chan */
386 lbs_deb_11d(
387 "i %d, chan %d unsupported in region %x, band %d\n",
388 i, curchan, region, band);
389 }
390 }
391
392 /*Step6: Add other checking if any */
393
394 }
395
396 parsed_region_chan->nr_chan = idx;
397
398 lbs_deb_11d("nrchan=%x\n", parsed_region_chan->nr_chan);
399 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (u8 *) parsed_region_chan,
400 2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx);
401
402 done:
403 lbs_deb_enter(LBS_DEB_11D);
404 return 0;
405 }
406
407 /**
408 * @brief This function calculates the scan type for channels
409 * @param chan chan number
410 * @param parsed_region_chan pointer to parsed_region_chan_11d
411 * @return PASSIVE if chan is unknown; ACTIVE if chan is known
412 */
413 u8 lbs_get_scan_type_11d(u8 chan,
414 struct parsed_region_chan_11d * parsed_region_chan)
415 {
416 u8 scan_type = CMD_SCAN_TYPE_PASSIVE;
417
418 lbs_deb_enter(LBS_DEB_11D);
419
420 if (lbs_channel_known_11d(chan, parsed_region_chan)) {
421 lbs_deb_11d("found, do active scan\n");
422 scan_type = CMD_SCAN_TYPE_ACTIVE;
423 } else {
424 lbs_deb_11d("not found, do passive scan\n");
425 }
426
427 lbs_deb_leave_args(LBS_DEB_11D, "ret scan_type %d", scan_type);
428 return scan_type;
429
430 }
431
432 void lbs_init_11d(struct lbs_private *priv)
433 {
434 priv->enable11d = 0;
435 memset(&(priv->parsed_region_chan), 0,
436 sizeof(struct parsed_region_chan_11d));
437 return;
438 }
439
440 /**
441 * @brief This function sets DOMAIN INFO to FW
442 * @param priv pointer to struct lbs_private
443 * @return 0; -1
444 */
445 static int set_domain_info_11d(struct lbs_private *priv)
446 {
447 int ret;
448
449 if (!priv->enable11d) {
450 lbs_deb_11d("dnld domain Info with 11d disabled\n");
451 return 0;
452 }
453
454 ret = lbs_prepare_and_send_command(priv, CMD_802_11D_DOMAIN_INFO,
455 CMD_ACT_SET,
456 CMD_OPTION_WAITFORRSP, 0, NULL);
457 if (ret)
458 lbs_deb_11d("fail to dnld domain info\n");
459
460 return ret;
461 }
462
463 /**
464 * @brief This function setups scan channels
465 * @param priv pointer to struct lbs_private
466 * @param band band
467 * @return 0
468 */
469 int lbs_set_universaltable(struct lbs_private *priv, u8 band)
470 {
471 u16 size = sizeof(struct chan_freq_power);
472 u16 i = 0;
473
474 memset(priv->universal_channel, 0,
475 sizeof(priv->universal_channel));
476
477 priv->universal_channel[i].nrcfp =
478 sizeof(channel_freq_power_UN_BG) / size;
479 lbs_deb_11d("BG-band nrcfp %d\n",
480 priv->universal_channel[i].nrcfp);
481
482 priv->universal_channel[i].CFP = channel_freq_power_UN_BG;
483 priv->universal_channel[i].valid = 1;
484 priv->universal_channel[i].region = UNIVERSAL_REGION_CODE;
485 priv->universal_channel[i].band = band;
486 i++;
487
488 return 0;
489 }
490
491 /**
492 * @brief This function implements command CMD_802_11D_DOMAIN_INFO
493 * @param priv pointer to struct lbs_private
494 * @param cmd pointer to cmd buffer
495 * @param cmdno cmd ID
496 * @param cmdOption cmd action
497 * @return 0
498 */
499 int lbs_cmd_802_11d_domain_info(struct lbs_private *priv,
500 struct cmd_ds_command *cmd, u16 cmdno,
501 u16 cmdoption)
502 {
503 struct cmd_ds_802_11d_domain_info *pdomaininfo =
504 &cmd->params.domaininfo;
505 struct mrvlietypes_domainparamset *domain = &pdomaininfo->domain;
506 u8 nr_subband = priv->domainreg.nr_subband;
507
508 lbs_deb_enter(LBS_DEB_11D);
509
510 lbs_deb_11d("nr_subband=%x\n", nr_subband);
511
512 cmd->command = cpu_to_le16(cmdno);
513 pdomaininfo->action = cpu_to_le16(cmdoption);
514 if (cmdoption == CMD_ACT_GET) {
515 cmd->size =
516 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
517 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd,
518 le16_to_cpu(cmd->size));
519 goto done;
520 }
521
522 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
523 memcpy(domain->countrycode, priv->domainreg.countrycode,
524 sizeof(domain->countrycode));
525
526 domain->header.len =
527 cpu_to_le16(nr_subband * sizeof(struct ieeetypes_subbandset) +
528 sizeof(domain->countrycode));
529
530 if (nr_subband) {
531 memcpy(domain->subband, priv->domainreg.subband,
532 nr_subband * sizeof(struct ieeetypes_subbandset));
533
534 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
535 le16_to_cpu(domain->header.len) +
536 sizeof(struct mrvlietypesheader) +
537 S_DS_GEN);
538 } else {
539 cmd->size =
540 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
541 }
542
543 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd, le16_to_cpu(cmd->size));
544
545 done:
546 lbs_deb_enter(LBS_DEB_11D);
547 return 0;
548 }
549
550 /**
551 * @brief This function parses countryinfo from AP and download country info to FW
552 * @param priv pointer to struct lbs_private
553 * @param resp pointer to command response buffer
554 * @return 0; -1
555 */
556 int lbs_ret_802_11d_domain_info(struct cmd_ds_command *resp)
557 {
558 struct cmd_ds_802_11d_domain_info *domaininfo = &resp->params.domaininforesp;
559 struct mrvlietypes_domainparamset *domain = &domaininfo->domain;
560 u16 action = le16_to_cpu(domaininfo->action);
561 s16 ret = 0;
562 u8 nr_subband = 0;
563
564 lbs_deb_enter(LBS_DEB_11D);
565
566 lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
567 (int)le16_to_cpu(resp->size));
568
569 nr_subband = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
570 sizeof(struct ieeetypes_subbandset);
571
572 lbs_deb_11d("domain info resp: nr_subband %d\n", nr_subband);
573
574 if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) {
575 lbs_deb_11d("Invalid Numrer of Subband returned!!\n");
576 return -1;
577 }
578
579 switch (action) {
580 case CMD_ACT_SET: /*Proc Set action */
581 break;
582
583 case CMD_ACT_GET:
584 break;
585 default:
586 lbs_deb_11d("Invalid action:%d\n", domaininfo->action);
587 ret = -1;
588 break;
589 }
590
591 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
592 return ret;
593 }
594
595 /**
596 * @brief This function parses countryinfo from AP and download country info to FW
597 * @param priv pointer to struct lbs_private
598 * @return 0; -1
599 */
600 int lbs_parse_dnld_countryinfo_11d(struct lbs_private *priv,
601 struct bss_descriptor * bss)
602 {
603 int ret;
604
605 lbs_deb_enter(LBS_DEB_11D);
606 if (priv->enable11d) {
607 memset(&priv->parsed_region_chan, 0,
608 sizeof(struct parsed_region_chan_11d));
609 ret = parse_domain_info_11d(&bss->countryinfo, 0,
610 &priv->parsed_region_chan);
611
612 if (ret == -1) {
613 lbs_deb_11d("error parsing domain_info from AP\n");
614 goto done;
615 }
616
617 memset(&priv->domainreg, 0,
618 sizeof(struct lbs_802_11d_domain_reg));
619 generate_domain_info_11d(&priv->parsed_region_chan,
620 &priv->domainreg);
621
622 ret = set_domain_info_11d(priv);
623
624 if (ret) {
625 lbs_deb_11d("error setting domain info\n");
626 goto done;
627 }
628 }
629 ret = 0;
630
631 done:
632 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
633 return ret;
634 }
635
636 /**
637 * @brief This function generates 11D info from user specified regioncode and download to FW
638 * @param priv pointer to struct lbs_private
639 * @return 0; -1
640 */
641 int lbs_create_dnld_countryinfo_11d(struct lbs_private *priv)
642 {
643 int ret;
644 struct region_channel *region_chan;
645 u8 j;
646
647 lbs_deb_enter(LBS_DEB_11D);
648 lbs_deb_11d("curbssparams.band %d\n", priv->curbssparams.band);
649
650 if (priv->enable11d) {
651 /* update parsed_region_chan_11; dnld domaininf to FW */
652
653 for (j = 0; j < ARRAY_SIZE(priv->region_channel); j++) {
654 region_chan = &priv->region_channel[j];
655
656 lbs_deb_11d("%d region_chan->band %d\n", j,
657 region_chan->band);
658
659 if (!region_chan || !region_chan->valid
660 || !region_chan->CFP)
661 continue;
662 if (region_chan->band != priv->curbssparams.band)
663 continue;
664 break;
665 }
666
667 if (j >= ARRAY_SIZE(priv->region_channel)) {
668 lbs_deb_11d("region_chan not found, band %d\n",
669 priv->curbssparams.band);
670 ret = -1;
671 goto done;
672 }
673
674 memset(&priv->parsed_region_chan, 0,
675 sizeof(struct parsed_region_chan_11d));
676 lbs_generate_parsed_region_chan_11d(region_chan,
677 &priv->
678 parsed_region_chan);
679
680 memset(&priv->domainreg, 0,
681 sizeof(struct lbs_802_11d_domain_reg));
682 generate_domain_info_11d(&priv->parsed_region_chan,
683 &priv->domainreg);
684
685 ret = set_domain_info_11d(priv);
686
687 if (ret) {
688 lbs_deb_11d("error setting domain info\n");
689 goto done;
690 }
691
692 }
693 ret = 0;
694
695 done:
696 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
697 return ret;
698 }
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