Pull bugzilla-9429 into release branch
[pv_ops_mirror.git] / drivers / net / wireless / libertas / 11d.c
blob9cf0211de67f497a8da8c0543f5c5e1cdd3e056c
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>
8 #include "host.h"
9 #include "decl.h"
10 #include "11d.h"
11 #include "dev.h"
12 #include "wext.h"
14 #define TX_PWR_DEFAULT 10
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 */
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}
46 static u8 wlan_region_2_code(u8 * region)
48 u8 i;
49 u8 size = sizeof(region_code_mapping)/
50 sizeof(struct region_code_mapping);
52 for (i = 0; region[i] && i < COUNTRY_CODE_LEN; i++)
53 region[i] = toupper(region[i]);
55 for (i = 0; i < size; i++) {
56 if (!memcmp(region, region_code_mapping[i].region,
57 COUNTRY_CODE_LEN))
58 return (region_code_mapping[i].code);
61 /* default is US */
62 return (region_code_mapping[0].code);
65 static u8 *wlan_code_2_region(u8 code)
67 u8 i;
68 u8 size = sizeof(region_code_mapping)
69 / sizeof(struct region_code_mapping);
70 for (i = 0; i < size; i++) {
71 if (region_code_mapping[i].code == code)
72 return (region_code_mapping[i].region);
74 /* default is US */
75 return (region_code_mapping[0].region);
78 /**
79 * @brief This function finds the nrchan-th chan after the firstchan
80 * @param band band
81 * @param firstchan first channel number
82 * @param nrchan number of channels
83 * @return the nrchan-th chan number
85 static u8 wlan_get_chan_11d(u8 band, u8 firstchan, u8 nrchan, u8 * chan)
86 /*find the nrchan-th chan after the firstchan*/
88 u8 i;
89 struct chan_freq_power *cfp;
90 u8 cfp_no;
92 cfp = channel_freq_power_UN_BG;
93 cfp_no = sizeof(channel_freq_power_UN_BG) /
94 sizeof(struct chan_freq_power);
96 for (i = 0; i < cfp_no; i++) {
97 if ((cfp + i)->channel == firstchan) {
98 lbs_deb_11d("firstchan found\n");
99 break;
103 if (i < cfp_no) {
104 /*if beyond the boundary */
105 if (i + nrchan < cfp_no) {
106 *chan = (cfp + i + nrchan)->channel;
107 return 1;
111 return 0;
115 * @brief This function Checks if chan txpwr is learned from AP/IBSS
116 * @param chan chan number
117 * @param parsed_region_chan pointer to parsed_region_chan_11d
118 * @return TRUE; FALSE
120 static u8 wlan_channel_known_11d(u8 chan,
121 struct parsed_region_chan_11d * parsed_region_chan)
123 struct chan_power_11d *chanpwr = parsed_region_chan->chanpwr;
124 u8 nr_chan = parsed_region_chan->nr_chan;
125 u8 i = 0;
127 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (char *)chanpwr,
128 sizeof(struct chan_power_11d) * nr_chan);
130 for (i = 0; i < nr_chan; i++) {
131 if (chan == chanpwr[i].chan) {
132 lbs_deb_11d("found chan %d\n", chan);
133 return 1;
137 lbs_deb_11d("chan %d not found\n", chan);
138 return 0;
141 u32 libertas_chan_2_freq(u8 chan, u8 band)
143 struct chan_freq_power *cf;
144 u16 cnt;
145 u16 i;
146 u32 freq = 0;
148 cf = channel_freq_power_UN_BG;
149 cnt =
150 sizeof(channel_freq_power_UN_BG) /
151 sizeof(struct chan_freq_power);
153 for (i = 0; i < cnt; i++) {
154 if (chan == cf[i].channel)
155 freq = cf[i].freq;
158 return freq;
161 static int generate_domain_info_11d(struct parsed_region_chan_11d
162 *parsed_region_chan,
163 struct wlan_802_11d_domain_reg * domaininfo)
165 u8 nr_subband = 0;
167 u8 nr_chan = parsed_region_chan->nr_chan;
168 u8 nr_parsedchan = 0;
170 u8 firstchan = 0, nextchan = 0, maxpwr = 0;
172 u8 i, flag = 0;
174 memcpy(domaininfo->countrycode, parsed_region_chan->countrycode,
175 COUNTRY_CODE_LEN);
177 lbs_deb_11d("nrchan %d\n", nr_chan);
178 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (char *)parsed_region_chan,
179 sizeof(struct parsed_region_chan_11d));
181 for (i = 0; i < nr_chan; i++) {
182 if (!flag) {
183 flag = 1;
184 nextchan = firstchan =
185 parsed_region_chan->chanpwr[i].chan;
186 maxpwr = parsed_region_chan->chanpwr[i].pwr;
187 nr_parsedchan = 1;
188 continue;
191 if (parsed_region_chan->chanpwr[i].chan == nextchan + 1 &&
192 parsed_region_chan->chanpwr[i].pwr == maxpwr) {
193 nextchan++;
194 nr_parsedchan++;
195 } else {
196 domaininfo->subband[nr_subband].firstchan = firstchan;
197 domaininfo->subband[nr_subband].nrchan =
198 nr_parsedchan;
199 domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
200 nr_subband++;
201 nextchan = firstchan =
202 parsed_region_chan->chanpwr[i].chan;
203 maxpwr = parsed_region_chan->chanpwr[i].pwr;
207 if (flag) {
208 domaininfo->subband[nr_subband].firstchan = firstchan;
209 domaininfo->subband[nr_subband].nrchan = nr_parsedchan;
210 domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
211 nr_subband++;
213 domaininfo->nr_subband = nr_subband;
215 lbs_deb_11d("nr_subband=%x\n", domaininfo->nr_subband);
216 lbs_deb_hex(LBS_DEB_11D, "domaininfo", (char *)domaininfo,
217 COUNTRY_CODE_LEN + 1 +
218 sizeof(struct ieeetypes_subbandset) * nr_subband);
219 return 0;
223 * @brief This function generates parsed_region_chan from Domain Info learned from AP/IBSS
224 * @param region_chan pointer to struct region_channel
225 * @param *parsed_region_chan pointer to parsed_region_chan_11d
226 * @return N/A
228 static void wlan_generate_parsed_region_chan_11d(struct region_channel * region_chan,
229 struct parsed_region_chan_11d *
230 parsed_region_chan)
232 u8 i;
233 struct chan_freq_power *cfp;
235 if (region_chan == NULL) {
236 lbs_deb_11d("region_chan is NULL\n");
237 return;
240 cfp = region_chan->CFP;
241 if (cfp == NULL) {
242 lbs_deb_11d("cfp is NULL \n");
243 return;
246 parsed_region_chan->band = region_chan->band;
247 parsed_region_chan->region = region_chan->region;
248 memcpy(parsed_region_chan->countrycode,
249 wlan_code_2_region(region_chan->region), COUNTRY_CODE_LEN);
251 lbs_deb_11d("region 0x%x, band %d\n", parsed_region_chan->region,
252 parsed_region_chan->band);
254 for (i = 0; i < region_chan->nrcfp; i++, cfp++) {
255 parsed_region_chan->chanpwr[i].chan = cfp->channel;
256 parsed_region_chan->chanpwr[i].pwr = cfp->maxtxpower;
257 lbs_deb_11d("chan %d, pwr %d\n",
258 parsed_region_chan->chanpwr[i].chan,
259 parsed_region_chan->chanpwr[i].pwr);
261 parsed_region_chan->nr_chan = region_chan->nrcfp;
263 lbs_deb_11d("nrchan %d\n", parsed_region_chan->nr_chan);
265 return;
269 * @brief generate parsed_region_chan from Domain Info learned from AP/IBSS
270 * @param region region ID
271 * @param band band
272 * @param chan chan
273 * @return TRUE;FALSE
275 static u8 wlan_region_chan_supported_11d(u8 region, u8 band, u8 chan)
277 struct chan_freq_power *cfp;
278 int cfp_no;
279 u8 idx;
280 int ret = 0;
282 lbs_deb_enter(LBS_DEB_11D);
284 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
285 if (cfp == NULL)
286 return 0;
288 for (idx = 0; idx < cfp_no; idx++) {
289 if (chan == (cfp + idx)->channel) {
290 /* If Mrvl Chip Supported? */
291 if ((cfp + idx)->unsupported) {
292 ret = 0;
293 } else {
294 ret = 1;
296 goto done;
300 /*chan is not in the region table */
302 done:
303 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
304 return ret;
308 * @brief This function checks if chan txpwr is learned from AP/IBSS
309 * @param chan chan number
310 * @param parsed_region_chan pointer to parsed_region_chan_11d
311 * @return 0
313 static int parse_domain_info_11d(struct ieeetypes_countryinfofullset*
314 countryinfo,
315 u8 band,
316 struct parsed_region_chan_11d *
317 parsed_region_chan)
319 u8 nr_subband, nrchan;
320 u8 lastchan, firstchan;
321 u8 region;
322 u8 curchan = 0;
324 u8 idx = 0; /*chan index in parsed_region_chan */
326 u8 j, i;
328 lbs_deb_enter(LBS_DEB_11D);
330 /*validation Rules:
331 1. valid region Code
332 2. First Chan increment
333 3. channel range no overlap
334 4. channel is valid?
335 5. channel is supported by region?
336 6. Others
339 lbs_deb_hex(LBS_DEB_11D, "countryinfo", (u8 *) countryinfo, 30);
341 if ((*(countryinfo->countrycode)) == 0
342 || (countryinfo->len <= COUNTRY_CODE_LEN)) {
343 /* No region Info or Wrong region info: treat as No 11D info */
344 goto done;
347 /*Step1: check region_code */
348 parsed_region_chan->region = region =
349 wlan_region_2_code(countryinfo->countrycode);
351 lbs_deb_11d("regioncode=%x\n", (u8) parsed_region_chan->region);
352 lbs_deb_hex(LBS_DEB_11D, "countrycode", (char *)countryinfo->countrycode,
353 COUNTRY_CODE_LEN);
355 parsed_region_chan->band = band;
357 memcpy(parsed_region_chan->countrycode, countryinfo->countrycode,
358 COUNTRY_CODE_LEN);
360 nr_subband = (countryinfo->len - COUNTRY_CODE_LEN) /
361 sizeof(struct ieeetypes_subbandset);
363 for (j = 0, lastchan = 0; j < nr_subband; j++) {
365 if (countryinfo->subband[j].firstchan <= lastchan) {
366 /*Step2&3. Check First Chan Num increment and no overlap */
367 lbs_deb_11d("chan %d>%d, overlap\n",
368 countryinfo->subband[j].firstchan, lastchan);
369 continue;
372 firstchan = countryinfo->subband[j].firstchan;
373 nrchan = countryinfo->subband[j].nrchan;
375 for (i = 0; idx < MAX_NO_OF_CHAN && i < nrchan; i++) {
376 /*step4: channel is supported? */
378 if (!wlan_get_chan_11d(band, firstchan, i, &curchan)) {
379 /* Chan is not found in UN table */
380 lbs_deb_11d("chan is not supported: %d \n", i);
381 break;
384 lastchan = curchan;
386 if (wlan_region_chan_supported_11d
387 (region, band, curchan)) {
388 /*step5: Check if curchan is supported by mrvl in region */
389 parsed_region_chan->chanpwr[idx].chan = curchan;
390 parsed_region_chan->chanpwr[idx].pwr =
391 countryinfo->subband[j].maxtxpwr;
392 idx++;
393 } else {
394 /*not supported and ignore the chan */
395 lbs_deb_11d(
396 "i %d, chan %d unsupported in region %x, band %d\n",
397 i, curchan, region, band);
401 /*Step6: Add other checking if any */
405 parsed_region_chan->nr_chan = idx;
407 lbs_deb_11d("nrchan=%x\n", parsed_region_chan->nr_chan);
408 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (u8 *) parsed_region_chan,
409 2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx);
411 done:
412 lbs_deb_enter(LBS_DEB_11D);
413 return 0;
417 * @brief This function calculates the scan type for channels
418 * @param chan chan number
419 * @param parsed_region_chan pointer to parsed_region_chan_11d
420 * @return PASSIVE if chan is unknown; ACTIVE if chan is known
422 u8 libertas_get_scan_type_11d(u8 chan,
423 struct parsed_region_chan_11d * parsed_region_chan)
425 u8 scan_type = CMD_SCAN_TYPE_PASSIVE;
427 lbs_deb_enter(LBS_DEB_11D);
429 if (wlan_channel_known_11d(chan, parsed_region_chan)) {
430 lbs_deb_11d("found, do active scan\n");
431 scan_type = CMD_SCAN_TYPE_ACTIVE;
432 } else {
433 lbs_deb_11d("not found, do passive scan\n");
436 lbs_deb_leave_args(LBS_DEB_11D, "ret scan_type %d", scan_type);
437 return scan_type;
441 void libertas_init_11d(wlan_private * priv)
443 priv->adapter->enable11d = 0;
444 memset(&(priv->adapter->parsed_region_chan), 0,
445 sizeof(struct parsed_region_chan_11d));
446 return;
450 * @brief This function sets DOMAIN INFO to FW
451 * @param priv pointer to wlan_private
452 * @return 0; -1
454 static int set_domain_info_11d(wlan_private * priv)
456 int ret;
458 if (!priv->adapter->enable11d) {
459 lbs_deb_11d("dnld domain Info with 11d disabled\n");
460 return 0;
463 ret = libertas_prepare_and_send_command(priv, CMD_802_11D_DOMAIN_INFO,
464 CMD_ACT_SET,
465 CMD_OPTION_WAITFORRSP, 0, NULL);
466 if (ret)
467 lbs_deb_11d("fail to dnld domain info\n");
469 return ret;
473 * @brief This function setups scan channels
474 * @param priv pointer to wlan_private
475 * @param band band
476 * @return 0
478 int libertas_set_universaltable(wlan_private * priv, u8 band)
480 wlan_adapter *adapter = priv->adapter;
481 u16 size = sizeof(struct chan_freq_power);
482 u16 i = 0;
484 memset(adapter->universal_channel, 0,
485 sizeof(adapter->universal_channel));
487 adapter->universal_channel[i].nrcfp =
488 sizeof(channel_freq_power_UN_BG) / size;
489 lbs_deb_11d("BG-band nrcfp %d\n",
490 adapter->universal_channel[i].nrcfp);
492 adapter->universal_channel[i].CFP = channel_freq_power_UN_BG;
493 adapter->universal_channel[i].valid = 1;
494 adapter->universal_channel[i].region = UNIVERSAL_REGION_CODE;
495 adapter->universal_channel[i].band = band;
496 i++;
498 return 0;
502 * @brief This function implements command CMD_802_11D_DOMAIN_INFO
503 * @param priv pointer to wlan_private
504 * @param cmd pointer to cmd buffer
505 * @param cmdno cmd ID
506 * @param cmdOption cmd action
507 * @return 0
509 int libertas_cmd_802_11d_domain_info(wlan_private * priv,
510 struct cmd_ds_command *cmd, u16 cmdno,
511 u16 cmdoption)
513 struct cmd_ds_802_11d_domain_info *pdomaininfo =
514 &cmd->params.domaininfo;
515 struct mrvlietypes_domainparamset *domain = &pdomaininfo->domain;
516 wlan_adapter *adapter = priv->adapter;
517 u8 nr_subband = adapter->domainreg.nr_subband;
519 lbs_deb_enter(LBS_DEB_11D);
521 lbs_deb_11d("nr_subband=%x\n", nr_subband);
523 cmd->command = cpu_to_le16(cmdno);
524 pdomaininfo->action = cpu_to_le16(cmdoption);
525 if (cmdoption == CMD_ACT_GET) {
526 cmd->size =
527 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
528 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd,
529 (int)(cmd->size));
530 goto done;
533 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
534 memcpy(domain->countrycode, adapter->domainreg.countrycode,
535 sizeof(domain->countrycode));
537 domain->header.len =
538 cpu_to_le16(nr_subband * sizeof(struct ieeetypes_subbandset) +
539 sizeof(domain->countrycode));
541 if (nr_subband) {
542 memcpy(domain->subband, adapter->domainreg.subband,
543 nr_subband * sizeof(struct ieeetypes_subbandset));
545 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
546 le16_to_cpu(domain->header.len) +
547 sizeof(struct mrvlietypesheader) +
548 S_DS_GEN);
549 } else {
550 cmd->size =
551 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
554 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd, le16_to_cpu(cmd->size));
556 done:
557 lbs_deb_enter(LBS_DEB_11D);
558 return 0;
562 * @brief This function parses countryinfo from AP and download country info to FW
563 * @param priv pointer to wlan_private
564 * @param resp pointer to command response buffer
565 * @return 0; -1
567 int libertas_ret_802_11d_domain_info(wlan_private * priv,
568 struct cmd_ds_command *resp)
570 struct cmd_ds_802_11d_domain_info *domaininfo = &resp->params.domaininforesp;
571 struct mrvlietypes_domainparamset *domain = &domaininfo->domain;
572 u16 action = le16_to_cpu(domaininfo->action);
573 s16 ret = 0;
574 u8 nr_subband = 0;
576 lbs_deb_enter(LBS_DEB_11D);
578 lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
579 (int)le16_to_cpu(resp->size));
581 nr_subband = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
582 sizeof(struct ieeetypes_subbandset);
584 lbs_deb_11d("domain info resp: nr_subband %d\n", nr_subband);
586 if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) {
587 lbs_deb_11d("Invalid Numrer of Subband returned!!\n");
588 return -1;
591 switch (action) {
592 case CMD_ACT_SET: /*Proc Set action */
593 break;
595 case CMD_ACT_GET:
596 break;
597 default:
598 lbs_deb_11d("Invalid action:%d\n", domaininfo->action);
599 ret = -1;
600 break;
603 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
604 return ret;
608 * @brief This function parses countryinfo from AP and download country info to FW
609 * @param priv pointer to wlan_private
610 * @return 0; -1
612 int libertas_parse_dnld_countryinfo_11d(wlan_private * priv,
613 struct bss_descriptor * bss)
615 int ret;
616 wlan_adapter *adapter = priv->adapter;
618 lbs_deb_enter(LBS_DEB_11D);
619 if (priv->adapter->enable11d) {
620 memset(&adapter->parsed_region_chan, 0,
621 sizeof(struct parsed_region_chan_11d));
622 ret = parse_domain_info_11d(&bss->countryinfo, 0,
623 &adapter->parsed_region_chan);
625 if (ret == -1) {
626 lbs_deb_11d("error parsing domain_info from AP\n");
627 goto done;
630 memset(&adapter->domainreg, 0,
631 sizeof(struct wlan_802_11d_domain_reg));
632 generate_domain_info_11d(&adapter->parsed_region_chan,
633 &adapter->domainreg);
635 ret = set_domain_info_11d(priv);
637 if (ret) {
638 lbs_deb_11d("error setting domain info\n");
639 goto done;
642 ret = 0;
644 done:
645 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
646 return ret;
650 * @brief This function generates 11D info from user specified regioncode and download to FW
651 * @param priv pointer to wlan_private
652 * @return 0; -1
654 int libertas_create_dnld_countryinfo_11d(wlan_private * priv)
656 int ret;
657 wlan_adapter *adapter = priv->adapter;
658 struct region_channel *region_chan;
659 u8 j;
661 lbs_deb_enter(LBS_DEB_11D);
662 lbs_deb_11d("curbssparams.band %d\n", adapter->curbssparams.band);
664 if (priv->adapter->enable11d) {
665 /* update parsed_region_chan_11; dnld domaininf to FW */
667 for (j = 0; j < sizeof(adapter->region_channel) /
668 sizeof(adapter->region_channel[0]); j++) {
669 region_chan = &adapter->region_channel[j];
671 lbs_deb_11d("%d region_chan->band %d\n", j,
672 region_chan->band);
674 if (!region_chan || !region_chan->valid
675 || !region_chan->CFP)
676 continue;
677 if (region_chan->band != adapter->curbssparams.band)
678 continue;
679 break;
682 if (j >= sizeof(adapter->region_channel) /
683 sizeof(adapter->region_channel[0])) {
684 lbs_deb_11d("region_chan not found, band %d\n",
685 adapter->curbssparams.band);
686 ret = -1;
687 goto done;
690 memset(&adapter->parsed_region_chan, 0,
691 sizeof(struct parsed_region_chan_11d));
692 wlan_generate_parsed_region_chan_11d(region_chan,
693 &adapter->
694 parsed_region_chan);
696 memset(&adapter->domainreg, 0,
697 sizeof(struct wlan_802_11d_domain_reg));
698 generate_domain_info_11d(&adapter->parsed_region_chan,
699 &adapter->domainreg);
701 ret = set_domain_info_11d(priv);
703 if (ret) {
704 lbs_deb_11d("error setting domain info\n");
705 goto done;
709 ret = 0;
711 done:
712 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
713 return ret;