2 * NXP Wireless LAN device driver: Channel, Frequence and Power
4 * Copyright 2011-2020 NXP
6 * This software file (the "File") is distributed by NXP
7 * under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
28 #define MWIFIEX_TX_PWR_DEFAULT 20
30 #define MWIFIEX_TX_PWR_US_DEFAULT 20
32 #define MWIFIEX_TX_PWR_JP_DEFAULT 16
34 #define MWIFIEX_TX_PWR_FR_100MW 20
36 #define MWIFIEX_TX_PWR_FR_10MW 10
38 #define MWIFIEX_TX_PWR_EMEA_DEFAULT 20
40 static u8 adhoc_rates_b[B_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0 };
42 static u8 adhoc_rates_g[G_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
43 0xb0, 0x48, 0x60, 0x6c, 0 };
45 static u8 adhoc_rates_bg[BG_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96,
46 0x0c, 0x12, 0x18, 0x24,
47 0x30, 0x48, 0x60, 0x6c, 0 };
49 static u8 adhoc_rates_a[A_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
50 0xb0, 0x48, 0x60, 0x6c, 0 };
51 static u8 supported_rates_a[A_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
52 0xb0, 0x48, 0x60, 0x6c, 0 };
53 static u16 mwifiex_data_rates[MWIFIEX_SUPPORTED_RATES_EXT] = { 0x02, 0x04,
54 0x0B, 0x16, 0x00, 0x0C, 0x12, 0x18,
55 0x24, 0x30, 0x48, 0x60, 0x6C, 0x90,
56 0x0D, 0x1A, 0x27, 0x34, 0x4E, 0x68,
57 0x75, 0x82, 0x0C, 0x1B, 0x36, 0x51,
58 0x6C, 0xA2, 0xD8, 0xF3, 0x10E, 0x00 };
60 static u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 };
62 static u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
63 0x30, 0x48, 0x60, 0x6c, 0 };
65 static u8 supported_rates_bg[BG_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x0c,
66 0x12, 0x16, 0x18, 0x24, 0x30, 0x48,
69 u16 region_code_index[MWIFIEX_MAX_REGION_CODE] = { 0x00, 0x10, 0x20, 0x30,
70 0x31, 0x32, 0x40, 0x41, 0x50 };
72 static u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 };
74 /* For every mcs_rate line, the first 8 bytes are for stream 1x1,
75 * and all 16 bytes are for stream 2x2.
77 static const u16 mcs_rate[4][16] = {
79 { 0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e,
80 0x36, 0x6c, 0xa2, 0xd8, 0x144, 0x1b0, 0x1e6, 0x21c },
83 { 0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c,
84 0x3c, 0x78, 0xb4, 0xf0, 0x168, 0x1e0, 0x21c, 0x258 },
87 { 0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82,
88 0x1a, 0x34, 0x4e, 0x68, 0x9c, 0xd0, 0xea, 0x104 },
91 { 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90,
92 0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 }
96 static const u16 ac_mcs_rate_nss1[8][10] = {
98 { 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
99 0x492, 0x57C, 0x618 },
102 { 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
103 0x514, 0x618, 0x6C6 },
106 { 0x3B, 0x75, 0xB0, 0xEA, 0x15F, 0x1D4, 0x20F,
107 0x249, 0x2BE, 0x30C },
110 { 0x41, 0x82, 0xC3, 0x104, 0x186, 0x208, 0x249,
111 0x28A, 0x30C, 0x363 },
114 { 0x1B, 0x36, 0x51, 0x6C, 0xA2, 0xD8, 0xF3,
115 0x10E, 0x144, 0x168 },
118 { 0x1E, 0x3C, 0x5A, 0x78, 0xB4, 0xF0, 0x10E,
119 0x12C, 0x168, 0x190 },
122 { 0xD, 0x1A, 0x27, 0x34, 0x4E, 0x68, 0x75, 0x82, 0x9C, 0x00 },
125 { 0xF, 0x1D, 0x2C, 0x3A, 0x57, 0x74, 0x82, 0x91, 0xAE, 0x00 },
128 /* NSS2 note: the value in the table is 2 multiplier of the actual rate */
129 static const u16 ac_mcs_rate_nss2[8][10] = {
131 { 0xEA, 0x1D4, 0x2BE, 0x3A8, 0x57C, 0x750, 0x83A,
132 0x924, 0xAF8, 0xC30 },
135 { 0x104, 0x208, 0x30C, 0x410, 0x618, 0x820, 0x924,
136 0xA28, 0xC30, 0xD8B },
139 { 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
140 0x492, 0x57C, 0x618 },
143 { 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
144 0x514, 0x618, 0x6C6 },
147 { 0x36, 0x6C, 0xA2, 0xD8, 0x144, 0x1B0, 0x1E6,
148 0x21C, 0x288, 0x2D0 },
151 { 0x3C, 0x78, 0xB4, 0xF0, 0x168, 0x1E0, 0x21C,
152 0x258, 0x2D0, 0x320 },
155 { 0x1A, 0x34, 0x4A, 0x68, 0x9C, 0xD0, 0xEA, 0x104,
159 { 0x1D, 0x3A, 0x57, 0x74, 0xAE, 0xE6, 0x104, 0x121,
163 struct region_code_mapping {
165 u8 region[IEEE80211_COUNTRY_STRING_LEN];
168 static struct region_code_mapping region_code_mapping_t[] = {
169 { 0x10, "US " }, /* US FCC */
170 { 0x20, "CA " }, /* IC Canada */
171 { 0x30, "FR " }, /* France */
172 { 0x31, "ES " }, /* Spain */
173 { 0x32, "FR " }, /* France */
174 { 0x40, "JP " }, /* Japan */
175 { 0x41, "JP " }, /* Japan */
176 { 0x50, "CN " }, /* China */
179 /* This function converts integer code to region string */
180 u8 *mwifiex_11d_code_2_region(u8 code)
184 /* Look for code in mapping table */
185 for (i = 0; i < ARRAY_SIZE(region_code_mapping_t); i++)
186 if (region_code_mapping_t[i].code == code)
187 return region_code_mapping_t[i].region;
193 * This function maps an index in supported rates table into
194 * the corresponding data rate.
196 u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv,
197 u8 index, u8 ht_info)
204 if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_VHT) {
205 mcs_index = min(index & 0xF, 9);
207 /* 20M: bw=0, 40M: bw=1, 80M: bw=2, 160M: bw=3 */
208 bw = (ht_info & 0xC) >> 2;
210 /* LGI: gi =0, SGI: gi = 1 */
211 gi = (ht_info & 0x10) >> 4;
213 if ((index >> 4) == 1) /* NSS = 2 */
214 rate = ac_mcs_rate_nss2[2 * (3 - bw) + gi][mcs_index];
216 rate = ac_mcs_rate_nss1[2 * (3 - bw) + gi][mcs_index];
217 } else if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_HT) {
218 /* 20M: bw=0, 40M: bw=1 */
219 bw = (ht_info & 0xC) >> 2;
221 /* LGI: gi =0, SGI: gi = 1 */
222 gi = (ht_info & 0x10) >> 4;
224 if (index == MWIFIEX_RATE_BITMAP_MCS0) {
226 rate = 0x0D; /* MCS 32 SGI rate */
228 rate = 0x0C; /* MCS 32 LGI rate */
229 } else if (index < 16) {
230 if ((bw == 1) || (bw == 0))
231 rate = mcs_rate[2 * (1 - bw) + gi][index];
233 rate = mwifiex_data_rates[0];
235 rate = mwifiex_data_rates[0];
238 /* 11n non-HT rates */
239 if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
241 rate = mwifiex_data_rates[index];
247 /* This function maps an index in supported rates table into
248 * the corresponding data rate.
250 u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv,
251 u8 index, u8 ht_info)
254 (priv->adapter->user_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8;
257 if (priv->adapter->is_hw_11ac_capable)
258 return mwifiex_index_to_acs_data_rate(priv, index, ht_info);
260 if (ht_info & BIT(0)) {
261 if (index == MWIFIEX_RATE_BITMAP_MCS0) {
262 if (ht_info & BIT(2))
263 rate = 0x0D; /* MCS 32 SGI rate */
265 rate = 0x0C; /* MCS 32 LGI rate */
266 } else if (index < mcs_num_supp) {
267 if (ht_info & BIT(1)) {
268 if (ht_info & BIT(2))
270 rate = mcs_rate[1][index];
273 rate = mcs_rate[0][index];
275 if (ht_info & BIT(2))
277 rate = mcs_rate[3][index];
280 rate = mcs_rate[2][index];
283 rate = mwifiex_data_rates[0];
285 if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
287 rate = mwifiex_data_rates[index];
293 * This function returns the current active data rates.
295 * The result may vary depending upon connection status.
297 u32 mwifiex_get_active_data_rates(struct mwifiex_private *priv, u8 *rates)
299 if (!priv->media_connected)
300 return mwifiex_get_supported_rates(priv, rates);
302 return mwifiex_copy_rates(rates, 0,
303 priv->curr_bss_params.data_rates,
304 priv->curr_bss_params.num_of_rates);
308 * This function locates the Channel-Frequency-Power triplet based upon
309 * band and channel/frequency parameters.
311 struct mwifiex_chan_freq_power *
312 mwifiex_get_cfp(struct mwifiex_private *priv, u8 band, u16 channel, u32 freq)
314 struct mwifiex_chan_freq_power *cfp = NULL;
315 struct ieee80211_supported_band *sband;
316 struct ieee80211_channel *ch = NULL;
319 if (!channel && !freq)
322 if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG)
323 sband = priv->wdev.wiphy->bands[NL80211_BAND_2GHZ];
325 sband = priv->wdev.wiphy->bands[NL80211_BAND_5GHZ];
328 mwifiex_dbg(priv->adapter, ERROR,
329 "%s: cannot find cfp by band %d\n",
334 for (i = 0; i < sband->n_channels; i++) {
335 ch = &sband->channels[i];
337 if (ch->flags & IEEE80211_CHAN_DISABLED)
341 if (ch->center_freq == freq)
344 /* find by valid channel*/
345 if (ch->hw_value == channel ||
346 channel == FIRST_VALID_CHANNEL)
350 if (i == sband->n_channels) {
351 mwifiex_dbg(priv->adapter, WARN,
352 "%s: cannot find cfp by band %d\t"
353 "& channel=%d freq=%d\n",
354 __func__, band, channel, freq);
359 priv->cfp.channel = ch->hw_value;
360 priv->cfp.freq = ch->center_freq;
361 priv->cfp.max_tx_power = ch->max_power;
369 * This function checks if the data rate is set to auto.
372 mwifiex_is_rate_auto(struct mwifiex_private *priv)
377 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates); i++)
378 if (priv->bitmap_rates[i])
387 /* This function gets the supported data rates from bitmask inside
388 * cfg80211_scan_request.
390 u32 mwifiex_get_rates_from_cfg80211(struct mwifiex_private *priv,
391 u8 *rates, u8 radio_type)
393 struct wiphy *wiphy = priv->adapter->wiphy;
394 struct cfg80211_scan_request *request = priv->scan_request;
395 u32 num_rates, rate_mask;
396 struct ieee80211_supported_band *sband;
400 sband = wiphy->bands[NL80211_BAND_5GHZ];
401 if (WARN_ON_ONCE(!sband))
403 rate_mask = request->rates[NL80211_BAND_5GHZ];
405 sband = wiphy->bands[NL80211_BAND_2GHZ];
406 if (WARN_ON_ONCE(!sband))
408 rate_mask = request->rates[NL80211_BAND_2GHZ];
412 for (i = 0; i < sband->n_bitrates; i++) {
413 if ((BIT(i) & rate_mask) == 0)
414 continue; /* skip rate */
415 rates[num_rates++] = (u8)(sband->bitrates[i].bitrate / 5);
421 /* This function gets the supported data rates. The function works in
422 * both Ad-Hoc and infra mode by printing the band and returning the
425 u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
428 struct mwifiex_adapter *adapter = priv->adapter;
430 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
431 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
432 switch (adapter->config_bands) {
434 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
435 "supported_rates_b\n",
436 adapter->config_bands);
437 k = mwifiex_copy_rates(rates, k, supported_rates_b,
438 sizeof(supported_rates_b));
441 case BAND_G | BAND_GN:
442 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
443 "supported_rates_g\n",
444 adapter->config_bands);
445 k = mwifiex_copy_rates(rates, k, supported_rates_g,
446 sizeof(supported_rates_g));
448 case BAND_B | BAND_G:
449 case BAND_A | BAND_B | BAND_G:
450 case BAND_A | BAND_B:
451 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN:
452 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN | BAND_AAC:
453 case BAND_B | BAND_G | BAND_GN:
454 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
455 "supported_rates_bg\n",
456 adapter->config_bands);
457 k = mwifiex_copy_rates(rates, k, supported_rates_bg,
458 sizeof(supported_rates_bg));
461 case BAND_A | BAND_G:
462 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
463 "supported_rates_a\n",
464 adapter->config_bands);
465 k = mwifiex_copy_rates(rates, k, supported_rates_a,
466 sizeof(supported_rates_a));
469 case BAND_A | BAND_AN:
470 case BAND_A | BAND_AN | BAND_AAC:
471 case BAND_A | BAND_G | BAND_AN | BAND_GN:
472 case BAND_A | BAND_G | BAND_AN | BAND_GN | BAND_AAC:
473 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
474 "supported_rates_a\n",
475 adapter->config_bands);
476 k = mwifiex_copy_rates(rates, k, supported_rates_a,
477 sizeof(supported_rates_a));
480 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
481 "supported_rates_n\n",
482 adapter->config_bands);
483 k = mwifiex_copy_rates(rates, k, supported_rates_n,
484 sizeof(supported_rates_n));
489 switch (adapter->adhoc_start_band) {
491 mwifiex_dbg(adapter, INFO, "info: adhoc B\n");
492 k = mwifiex_copy_rates(rates, k, adhoc_rates_b,
493 sizeof(adhoc_rates_b));
496 case BAND_G | BAND_GN:
497 mwifiex_dbg(adapter, INFO, "info: adhoc G only\n");
498 k = mwifiex_copy_rates(rates, k, adhoc_rates_g,
499 sizeof(adhoc_rates_g));
501 case BAND_B | BAND_G:
502 case BAND_B | BAND_G | BAND_GN:
503 mwifiex_dbg(adapter, INFO, "info: adhoc BG\n");
504 k = mwifiex_copy_rates(rates, k, adhoc_rates_bg,
505 sizeof(adhoc_rates_bg));
508 case BAND_A | BAND_AN:
509 mwifiex_dbg(adapter, INFO, "info: adhoc A\n");
510 k = mwifiex_copy_rates(rates, k, adhoc_rates_a,
511 sizeof(adhoc_rates_a));
519 u8 mwifiex_adjust_data_rate(struct mwifiex_private *priv,
520 u8 rx_rate, u8 rate_info)
525 if ((rate_info & BIT(0)) && (rate_info & BIT(1)))
526 rate_index = MWIFIEX_RATE_INDEX_MCS0 +
527 MWIFIEX_BW20_MCS_NUM + rx_rate;
528 else if (rate_info & BIT(0)) /* HT20 */
529 rate_index = MWIFIEX_RATE_INDEX_MCS0 + rx_rate;
531 rate_index = (rx_rate > MWIFIEX_RATE_INDEX_OFDM0) ?
532 rx_rate - 1 : rx_rate;
534 if (rate_index >= MWIFIEX_MAX_AC_RX_RATES)
535 rate_index = MWIFIEX_MAX_AC_RX_RATES - 1;