1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: Channel, Frequence and Power
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include "decl.h"
9 #include "ioctl.h"
10 #include "util.h"
11 #include "fw.h"
12 #include "main.h"
13 #include "cfg80211.h"
14
15 /* 100mW */
16 #define MWIFIEX_TX_PWR_DEFAULT 20
17 /* 100mW */
18 #define MWIFIEX_TX_PWR_US_DEFAULT 20
19 /* 50mW */
20 #define MWIFIEX_TX_PWR_JP_DEFAULT 16
21 /* 100mW */
22 #define MWIFIEX_TX_PWR_FR_100MW 20
23 /* 10mW */
24 #define MWIFIEX_TX_PWR_FR_10MW 10
25 /* 100mW */
26 #define MWIFIEX_TX_PWR_EMEA_DEFAULT 20
27
28 static u8 adhoc_rates_b[B_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0 };
29
30 static u8 adhoc_rates_g[G_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
31 0xb0, 0x48, 0x60, 0x6c, 0 };
32
33 static u8 adhoc_rates_bg[BG_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96,
34 0x0c, 0x12, 0x18, 0x24,
35 0x30, 0x48, 0x60, 0x6c, 0 };
36
37 static u8 adhoc_rates_a[A_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
38 0xb0, 0x48, 0x60, 0x6c, 0 };
39 static u8 supported_rates_a[A_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
40 0xb0, 0x48, 0x60, 0x6c, 0 };
41 static u16 mwifiex_data_rates[MWIFIEX_SUPPORTED_RATES_EXT] = { 0x02, 0x04,
42 0x0B, 0x16, 0x00, 0x0C, 0x12, 0x18,
43 0x24, 0x30, 0x48, 0x60, 0x6C, 0x90,
44 0x0D, 0x1A, 0x27, 0x34, 0x4E, 0x68,
45 0x75, 0x82, 0x0C, 0x1B, 0x36, 0x51,
46 0x6C, 0xA2, 0xD8, 0xF3, 0x10E, 0x00 };
47
48 static u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 };
49
50 static u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
51 0x30, 0x48, 0x60, 0x6c, 0 };
52
53 static u8 supported_rates_bg[BG_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x0c,
54 0x12, 0x16, 0x18, 0x24, 0x30, 0x48,
55 0x60, 0x6c, 0 };
56
57 u16 region_code_index[MWIFIEX_MAX_REGION_CODE] = { 0x00, 0x10, 0x20, 0x30,
58 0x31, 0x32, 0x40, 0x41, 0x50 };
59
60 static u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 };
61
62 /* For every mcs_rate line, the first 8 bytes are for stream 1x1,
63 * and all 16 bytes are for stream 2x2.
64 */
65 static const u16 mcs_rate[4][16] = {
66 /* LGI 40M */
67 { 0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e,
68 0x36, 0x6c, 0xa2, 0xd8, 0x144, 0x1b0, 0x1e6, 0x21c },
69
70 /* SGI 40M */
71 { 0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c,
72 0x3c, 0x78, 0xb4, 0xf0, 0x168, 0x1e0, 0x21c, 0x258 },
73
74 /* LGI 20M */
75 { 0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82,
76 0x1a, 0x34, 0x4e, 0x68, 0x9c, 0xd0, 0xea, 0x104 },
77
78 /* SGI 20M */
79 { 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90,
80 0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 }
81 };
82
83 /* AC rates */
84 static const u16 ac_mcs_rate_nss1[8][10] = {
85 /* LG 160M */
86 { 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
87 0x492, 0x57C, 0x618 },
88
89 /* SG 160M */
90 { 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
91 0x514, 0x618, 0x6C6 },
92
93 /* LG 80M */
94 { 0x3B, 0x75, 0xB0, 0xEA, 0x15F, 0x1D4, 0x20F,
95 0x249, 0x2BE, 0x30C },
96
97 /* SG 80M */
98 { 0x41, 0x82, 0xC3, 0x104, 0x186, 0x208, 0x249,
99 0x28A, 0x30C, 0x363 },
100
101 /* LG 40M */
102 { 0x1B, 0x36, 0x51, 0x6C, 0xA2, 0xD8, 0xF3,
103 0x10E, 0x144, 0x168 },
104
105 /* SG 40M */
106 { 0x1E, 0x3C, 0x5A, 0x78, 0xB4, 0xF0, 0x10E,
107 0x12C, 0x168, 0x190 },
108
109 /* LG 20M */
110 { 0xD, 0x1A, 0x27, 0x34, 0x4E, 0x68, 0x75, 0x82, 0x9C, 0x00 },
111
112 /* SG 20M */
113 { 0xF, 0x1D, 0x2C, 0x3A, 0x57, 0x74, 0x82, 0x91, 0xAE, 0x00 },
114 };
115
116 /* NSS2 note: the value in the table is 2 multiplier of the actual rate */
117 static const u16 ac_mcs_rate_nss2[8][10] = {
118 /* LG 160M */
119 { 0xEA, 0x1D4, 0x2BE, 0x3A8, 0x57C, 0x750, 0x83A,
120 0x924, 0xAF8, 0xC30 },
121
122 /* SG 160M */
123 { 0x104, 0x208, 0x30C, 0x410, 0x618, 0x820, 0x924,
124 0xA28, 0xC30, 0xD8B },
125
126 /* LG 80M */
127 { 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
128 0x492, 0x57C, 0x618 },
129
130 /* SG 80M */
131 { 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
132 0x514, 0x618, 0x6C6 },
133
134 /* LG 40M */
135 { 0x36, 0x6C, 0xA2, 0xD8, 0x144, 0x1B0, 0x1E6,
136 0x21C, 0x288, 0x2D0 },
137
138 /* SG 40M */
139 { 0x3C, 0x78, 0xB4, 0xF0, 0x168, 0x1E0, 0x21C,
140 0x258, 0x2D0, 0x320 },
141
142 /* LG 20M */
143 { 0x1A, 0x34, 0x4A, 0x68, 0x9C, 0xD0, 0xEA, 0x104,
144 0x138, 0x00 },
145
146 /* SG 20M */
147 { 0x1D, 0x3A, 0x57, 0x74, 0xAE, 0xE6, 0x104, 0x121,
148 0x15B, 0x00 },
149 };
150
151 struct region_code_mapping {
152 u8 code;
153 u8 region[IEEE80211_COUNTRY_STRING_LEN];
154 };
155
156 static struct region_code_mapping region_code_mapping_t[] = {
157 { 0x10, "US " }, /* US FCC */
158 { 0x20, "CA " }, /* IC Canada */
159 { 0x30, "FR " }, /* France */
160 { 0x31, "ES " }, /* Spain */
161 { 0x32, "FR " }, /* France */
162 { 0x40, "JP " }, /* Japan */
163 { 0x41, "JP " }, /* Japan */
164 { 0x50, "CN " }, /* China */
165 };
166
167 /* This function converts integer code to region string */
mwifiex_11d_code_2_region(u8 code)168 u8 *mwifiex_11d_code_2_region(u8 code)
169 {
170 u8 i;
171
172 /* Look for code in mapping table */
173 for (i = 0; i < ARRAY_SIZE(region_code_mapping_t); i++)
174 if (region_code_mapping_t[i].code == code)
175 return region_code_mapping_t[i].region;
176
177 return NULL;
178 }
179
180 /*
181 * This function maps an index in supported rates table into
182 * the corresponding data rate.
183 */
mwifiex_index_to_acs_data_rate(struct mwifiex_private * priv,u8 index,u8 ht_info)184 u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv,
185 u8 index, u8 ht_info)
186 {
187 u32 rate = 0;
188 u8 mcs_index = 0;
189 u8 bw = 0;
190 u8 gi = 0;
191
192 if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_VHT) {
193 mcs_index = min(index & 0xF, 9);
194
195 /* 20M: bw=0, 40M: bw=1, 80M: bw=2, 160M: bw=3 */
196 bw = (ht_info & 0xC) >> 2;
197
198 /* LGI: gi =0, SGI: gi = 1 */
199 gi = (ht_info & 0x10) >> 4;
200
201 if ((index >> 4) == 1) /* NSS = 2 */
202 rate = ac_mcs_rate_nss2[2 * (3 - bw) + gi][mcs_index];
203 else /* NSS = 1 */
204 rate = ac_mcs_rate_nss1[2 * (3 - bw) + gi][mcs_index];
205 } else if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_HT) {
206 /* 20M: bw=0, 40M: bw=1 */
207 bw = (ht_info & 0xC) >> 2;
208
209 /* LGI: gi =0, SGI: gi = 1 */
210 gi = (ht_info & 0x10) >> 4;
211
212 if (index == MWIFIEX_RATE_BITMAP_MCS0) {
213 if (gi == 1)
214 rate = 0x0D; /* MCS 32 SGI rate */
215 else
216 rate = 0x0C; /* MCS 32 LGI rate */
217 } else if (index < 16) {
218 if ((bw == 1) || (bw == 0))
219 rate = mcs_rate[2 * (1 - bw) + gi][index];
220 else
221 rate = mwifiex_data_rates[0];
222 } else {
223 rate = mwifiex_data_rates[0];
224 }
225 } else {
226 /* 11n non-HT rates */
227 if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
228 index = 0;
229 rate = mwifiex_data_rates[index];
230 }
231
232 return rate;
233 }
234
235 /* This function maps an index in supported rates table into
236 * the corresponding data rate.
237 */
mwifiex_index_to_data_rate(struct mwifiex_private * priv,u8 index,u8 ht_info)238 u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv,
239 u8 index, u8 ht_info)
240 {
241 u32 mcs_num_supp =
242 (priv->adapter->user_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8;
243 u32 rate;
244
245 if (priv->adapter->is_hw_11ac_capable)
246 return mwifiex_index_to_acs_data_rate(priv, index, ht_info);
247
248 if (ht_info & BIT(0)) {
249 if (index == MWIFIEX_RATE_BITMAP_MCS0) {
250 if (ht_info & BIT(2))
251 rate = 0x0D; /* MCS 32 SGI rate */
252 else
253 rate = 0x0C; /* MCS 32 LGI rate */
254 } else if (index < mcs_num_supp) {
255 if (ht_info & BIT(1)) {
256 if (ht_info & BIT(2))
257 /* SGI, 40M */
258 rate = mcs_rate[1][index];
259 else
260 /* LGI, 40M */
261 rate = mcs_rate[0][index];
262 } else {
263 if (ht_info & BIT(2))
264 /* SGI, 20M */
265 rate = mcs_rate[3][index];
266 else
267 /* LGI, 20M */
268 rate = mcs_rate[2][index];
269 }
270 } else
271 rate = mwifiex_data_rates[0];
272 } else {
273 if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
274 index = 0;
275 rate = mwifiex_data_rates[index];
276 }
277 return rate;
278 }
279
280 /*
281 * This function returns the current active data rates.
282 *
283 * The result may vary depending upon connection status.
284 */
mwifiex_get_active_data_rates(struct mwifiex_private * priv,u8 * rates)285 u32 mwifiex_get_active_data_rates(struct mwifiex_private *priv, u8 *rates)
286 {
287 if (!priv->media_connected)
288 return mwifiex_get_supported_rates(priv, rates);
289 else
290 return mwifiex_copy_rates(rates, 0,
291 priv->curr_bss_params.data_rates,
292 priv->curr_bss_params.num_of_rates);
293 }
294
295 /*
296 * This function locates the Channel-Frequency-Power triplet based upon
297 * band and channel/frequency parameters.
298 */
299 struct mwifiex_chan_freq_power *
mwifiex_get_cfp(struct mwifiex_private * priv,u8 band,u16 channel,u32 freq)300 mwifiex_get_cfp(struct mwifiex_private *priv, u8 band, u16 channel, u32 freq)
301 {
302 struct mwifiex_chan_freq_power *cfp = NULL;
303 struct ieee80211_supported_band *sband;
304 struct ieee80211_channel *ch = NULL;
305 int i;
306
307 if (!channel && !freq)
308 return cfp;
309
310 if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG)
311 sband = priv->wdev.wiphy->bands[NL80211_BAND_2GHZ];
312 else
313 sband = priv->wdev.wiphy->bands[NL80211_BAND_5GHZ];
314
315 if (!sband) {
316 mwifiex_dbg(priv->adapter, ERROR,
317 "%s: cannot find cfp by band %d\n",
318 __func__, band);
319 return cfp;
320 }
321
322 for (i = 0; i < sband->n_channels; i++) {
323 ch = &sband->channels[i];
324
325 if (ch->flags & IEEE80211_CHAN_DISABLED)
326 continue;
327
328 if (freq) {
329 if (ch->center_freq == freq)
330 break;
331 } else {
332 /* find by valid channel*/
333 if (ch->hw_value == channel ||
334 channel == FIRST_VALID_CHANNEL)
335 break;
336 }
337 }
338 if (i == sband->n_channels) {
339 mwifiex_dbg(priv->adapter, WARN,
340 "%s: cannot find cfp by band %d\t"
341 "& channel=%d freq=%d\n",
342 __func__, band, channel, freq);
343 } else {
344 if (!ch)
345 return cfp;
346
347 priv->cfp.channel = ch->hw_value;
348 priv->cfp.freq = ch->center_freq;
349 priv->cfp.max_tx_power = ch->max_power;
350 cfp = &priv->cfp;
351 }
352
353 return cfp;
354 }
355
356 /*
357 * This function checks if the data rate is set to auto.
358 */
359 u8
mwifiex_is_rate_auto(struct mwifiex_private * priv)360 mwifiex_is_rate_auto(struct mwifiex_private *priv)
361 {
362 u32 i;
363 int rate_num = 0;
364
365 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates); i++)
366 if (priv->bitmap_rates[i])
367 rate_num++;
368
369 if (rate_num > 1)
370 return true;
371 else
372 return false;
373 }
374
375 /* This function gets the supported data rates from bitmask inside
376 * cfg80211_scan_request.
377 */
mwifiex_get_rates_from_cfg80211(struct mwifiex_private * priv,u8 * rates,u8 radio_type)378 u32 mwifiex_get_rates_from_cfg80211(struct mwifiex_private *priv,
379 u8 *rates, u8 radio_type)
380 {
381 struct wiphy *wiphy = priv->adapter->wiphy;
382 struct cfg80211_scan_request *request = priv->scan_request;
383 u32 num_rates, rate_mask;
384 struct ieee80211_supported_band *sband;
385 int i;
386
387 if (radio_type) {
388 sband = wiphy->bands[NL80211_BAND_5GHZ];
389 if (WARN_ON_ONCE(!sband))
390 return 0;
391 rate_mask = request->rates[NL80211_BAND_5GHZ];
392 } else {
393 sband = wiphy->bands[NL80211_BAND_2GHZ];
394 if (WARN_ON_ONCE(!sband))
395 return 0;
396 rate_mask = request->rates[NL80211_BAND_2GHZ];
397 }
398
399 num_rates = 0;
400 for (i = 0; i < sband->n_bitrates; i++) {
401 if ((BIT(i) & rate_mask) == 0)
402 continue; /* skip rate */
403 rates[num_rates++] = (u8)(sband->bitrates[i].bitrate / 5);
404 }
405
406 return num_rates;
407 }
408
409 /* This function gets the supported data rates. The function works in
410 * both Ad-Hoc and infra mode by printing the band and returning the
411 * data rates.
412 */
mwifiex_get_supported_rates(struct mwifiex_private * priv,u8 * rates)413 u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
414 {
415 u32 k = 0;
416 struct mwifiex_adapter *adapter = priv->adapter;
417
418 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
419 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
420 switch (adapter->config_bands) {
421 case BAND_B:
422 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
423 "supported_rates_b\n",
424 adapter->config_bands);
425 k = mwifiex_copy_rates(rates, k, supported_rates_b,
426 sizeof(supported_rates_b));
427 break;
428 case BAND_G:
429 case BAND_G | BAND_GN:
430 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
431 "supported_rates_g\n",
432 adapter->config_bands);
433 k = mwifiex_copy_rates(rates, k, supported_rates_g,
434 sizeof(supported_rates_g));
435 break;
436 case BAND_B | BAND_G:
437 case BAND_A | BAND_B | BAND_G:
438 case BAND_A | BAND_B:
439 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN:
440 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN | BAND_AAC:
441 case BAND_B | BAND_G | BAND_GN:
442 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
443 "supported_rates_bg\n",
444 adapter->config_bands);
445 k = mwifiex_copy_rates(rates, k, supported_rates_bg,
446 sizeof(supported_rates_bg));
447 break;
448 case BAND_A:
449 case BAND_A | BAND_G:
450 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
451 "supported_rates_a\n",
452 adapter->config_bands);
453 k = mwifiex_copy_rates(rates, k, supported_rates_a,
454 sizeof(supported_rates_a));
455 break;
456 case BAND_AN:
457 case BAND_A | BAND_AN:
458 case BAND_A | BAND_AN | BAND_AAC:
459 case BAND_A | BAND_G | BAND_AN | BAND_GN:
460 case BAND_A | BAND_G | BAND_AN | BAND_GN | BAND_AAC:
461 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
462 "supported_rates_a\n",
463 adapter->config_bands);
464 k = mwifiex_copy_rates(rates, k, supported_rates_a,
465 sizeof(supported_rates_a));
466 break;
467 case BAND_GN:
468 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
469 "supported_rates_n\n",
470 adapter->config_bands);
471 k = mwifiex_copy_rates(rates, k, supported_rates_n,
472 sizeof(supported_rates_n));
473 break;
474 }
475 } else {
476 /* Ad-hoc mode */
477 switch (adapter->adhoc_start_band) {
478 case BAND_B:
479 mwifiex_dbg(adapter, INFO, "info: adhoc B\n");
480 k = mwifiex_copy_rates(rates, k, adhoc_rates_b,
481 sizeof(adhoc_rates_b));
482 break;
483 case BAND_G:
484 case BAND_G | BAND_GN:
485 mwifiex_dbg(adapter, INFO, "info: adhoc G only\n");
486 k = mwifiex_copy_rates(rates, k, adhoc_rates_g,
487 sizeof(adhoc_rates_g));
488 break;
489 case BAND_B | BAND_G:
490 case BAND_B | BAND_G | BAND_GN:
491 mwifiex_dbg(adapter, INFO, "info: adhoc BG\n");
492 k = mwifiex_copy_rates(rates, k, adhoc_rates_bg,
493 sizeof(adhoc_rates_bg));
494 break;
495 case BAND_A:
496 case BAND_A | BAND_AN:
497 mwifiex_dbg(adapter, INFO, "info: adhoc A\n");
498 k = mwifiex_copy_rates(rates, k, adhoc_rates_a,
499 sizeof(adhoc_rates_a));
500 break;
501 }
502 }
503
504 return k;
505 }
506
mwifiex_adjust_data_rate(struct mwifiex_private * priv,u8 rx_rate,u8 rate_info)507 u8 mwifiex_adjust_data_rate(struct mwifiex_private *priv,
508 u8 rx_rate, u8 rate_info)
509 {
510 u8 rate_index = 0;
511
512 /* HT40 */
513 if ((rate_info & BIT(0)) && (rate_info & BIT(1)))
514 rate_index = MWIFIEX_RATE_INDEX_MCS0 +
515 MWIFIEX_BW20_MCS_NUM + rx_rate;
516 else if (rate_info & BIT(0)) /* HT20 */
517 rate_index = MWIFIEX_RATE_INDEX_MCS0 + rx_rate;
518 else
519 rate_index = (rx_rate > MWIFIEX_RATE_INDEX_OFDM0) ?
520 rx_rate - 1 : rx_rate;
521
522 if (rate_index >= MWIFIEX_MAX_AC_RX_RATES)
523 rate_index = MWIFIEX_MAX_AC_RX_RATES - 1;
524
525 return rate_index;
526 }
527