1 /* 2 * Marvell Wireless LAN device driver: Channel, Frequence and Power 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. 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. 13 * 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. 18 */ 19 20 #include "decl.h" 21 #include "ioctl.h" 22 #include "util.h" 23 #include "fw.h" 24 #include "main.h" 25 #include "cfg80211.h" 26 27 /* 100mW */ 28 #define MWIFIEX_TX_PWR_DEFAULT 20 29 /* 100mW */ 30 #define MWIFIEX_TX_PWR_US_DEFAULT 20 31 /* 50mW */ 32 #define MWIFIEX_TX_PWR_JP_DEFAULT 16 33 /* 100mW */ 34 #define MWIFIEX_TX_PWR_FR_100MW 20 35 /* 10mW */ 36 #define MWIFIEX_TX_PWR_FR_10MW 10 37 /* 100mW */ 38 #define MWIFIEX_TX_PWR_EMEA_DEFAULT 20 39 40 static u8 adhoc_rates_b[B_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0 }; 41 42 static u8 adhoc_rates_g[G_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24, 43 0xb0, 0x48, 0x60, 0x6c, 0 }; 44 45 static u8 adhoc_rates_bg[BG_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 46 0x0c, 0x12, 0x18, 0x24, 47 0x30, 0x48, 0x60, 0x6c, 0 }; 48 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 }; 59 60 static u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 }; 61 62 static u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24, 63 0x30, 0x48, 0x60, 0x6c, 0 }; 64 65 static u8 supported_rates_bg[BG_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x0c, 66 0x12, 0x16, 0x18, 0x24, 0x30, 0x48, 67 0x60, 0x6c, 0 }; 68 69 u16 region_code_index[MWIFIEX_MAX_REGION_CODE] = { 0x00, 0x10, 0x20, 0x30, 70 0x31, 0x32, 0x40, 0x41, 0x50 }; 71 72 static u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 }; 73 74 /* For every mcs_rate line, the first 8 bytes are for stream 1x1, 75 * and all 16 bytes are for stream 2x2. 76 */ 77 static const u16 mcs_rate[4][16] = { 78 /* LGI 40M */ 79 { 0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e, 80 0x36, 0x6c, 0xa2, 0xd8, 0x144, 0x1b0, 0x1e6, 0x21c }, 81 82 /* SGI 40M */ 83 { 0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c, 84 0x3c, 0x78, 0xb4, 0xf0, 0x168, 0x1e0, 0x21c, 0x258 }, 85 86 /* LGI 20M */ 87 { 0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82, 88 0x1a, 0x34, 0x4e, 0x68, 0x9c, 0xd0, 0xea, 0x104 }, 89 90 /* SGI 20M */ 91 { 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90, 92 0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 } 93 }; 94 95 /* AC rates */ 96 static const u16 ac_mcs_rate_nss1[8][10] = { 97 /* LG 160M */ 98 { 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D, 99 0x492, 0x57C, 0x618 }, 100 101 /* SG 160M */ 102 { 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492, 103 0x514, 0x618, 0x6C6 }, 104 105 /* LG 80M */ 106 { 0x3B, 0x75, 0xB0, 0xEA, 0x15F, 0x1D4, 0x20F, 107 0x249, 0x2BE, 0x30C }, 108 109 /* SG 80M */ 110 { 0x41, 0x82, 0xC3, 0x104, 0x186, 0x208, 0x249, 111 0x28A, 0x30C, 0x363 }, 112 113 /* LG 40M */ 114 { 0x1B, 0x36, 0x51, 0x6C, 0xA2, 0xD8, 0xF3, 115 0x10E, 0x144, 0x168 }, 116 117 /* SG 40M */ 118 { 0x1E, 0x3C, 0x5A, 0x78, 0xB4, 0xF0, 0x10E, 119 0x12C, 0x168, 0x190 }, 120 121 /* LG 20M */ 122 { 0xD, 0x1A, 0x27, 0x34, 0x4E, 0x68, 0x75, 0x82, 0x9C, 0x00 }, 123 124 /* SG 20M */ 125 { 0xF, 0x1D, 0x2C, 0x3A, 0x57, 0x74, 0x82, 0x91, 0xAE, 0x00 }, 126 }; 127 128 /* NSS2 note: the value in the table is 2 multiplier of the actual rate */ 129 static const u16 ac_mcs_rate_nss2[8][10] = { 130 /* LG 160M */ 131 { 0xEA, 0x1D4, 0x2BE, 0x3A8, 0x57C, 0x750, 0x83A, 132 0x924, 0xAF8, 0xC30 }, 133 134 /* SG 160M */ 135 { 0x104, 0x208, 0x30C, 0x410, 0x618, 0x820, 0x924, 136 0xA28, 0xC30, 0xD8B }, 137 138 /* LG 80M */ 139 { 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D, 140 0x492, 0x57C, 0x618 }, 141 142 /* SG 80M */ 143 { 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492, 144 0x514, 0x618, 0x6C6 }, 145 146 /* LG 40M */ 147 { 0x36, 0x6C, 0xA2, 0xD8, 0x144, 0x1B0, 0x1E6, 148 0x21C, 0x288, 0x2D0 }, 149 150 /* SG 40M */ 151 { 0x3C, 0x78, 0xB4, 0xF0, 0x168, 0x1E0, 0x21C, 152 0x258, 0x2D0, 0x320 }, 153 154 /* LG 20M */ 155 { 0x1A, 0x34, 0x4A, 0x68, 0x9C, 0xD0, 0xEA, 0x104, 156 0x138, 0x00 }, 157 158 /* SG 20M */ 159 { 0x1D, 0x3A, 0x57, 0x74, 0xAE, 0xE6, 0x104, 0x121, 160 0x15B, 0x00 }, 161 }; 162 163 struct region_code_mapping { 164 u8 code; 165 u8 region[IEEE80211_COUNTRY_STRING_LEN]; 166 }; 167 168 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 */ 177 }; 178 179 /* This function converts integer code to region string */ 180 u8 *mwifiex_11d_code_2_region(u8 code) 181 { 182 u8 i; 183 u8 size = sizeof(region_code_mapping_t)/ 184 sizeof(struct region_code_mapping); 185 186 /* Look for code in mapping table */ 187 for (i = 0; i < size; i++) 188 if (region_code_mapping_t[i].code == code) 189 return region_code_mapping_t[i].region; 190 191 return NULL; 192 } 193 194 /* 195 * This function maps an index in supported rates table into 196 * the corresponding data rate. 197 */ 198 u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv, 199 u8 index, u8 ht_info) 200 { 201 u32 rate = 0; 202 u8 mcs_index = 0; 203 u8 bw = 0; 204 u8 gi = 0; 205 206 if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_VHT) { 207 mcs_index = min(index & 0xF, 9); 208 209 /* 20M: bw=0, 40M: bw=1, 80M: bw=2, 160M: bw=3 */ 210 bw = (ht_info & 0xC) >> 2; 211 212 /* LGI: gi =0, SGI: gi = 1 */ 213 gi = (ht_info & 0x10) >> 4; 214 215 if ((index >> 4) == 1) /* NSS = 2 */ 216 rate = ac_mcs_rate_nss2[2 * (3 - bw) + gi][mcs_index]; 217 else /* NSS = 1 */ 218 rate = ac_mcs_rate_nss1[2 * (3 - bw) + gi][mcs_index]; 219 } else if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_HT) { 220 /* 20M: bw=0, 40M: bw=1 */ 221 bw = (ht_info & 0xC) >> 2; 222 223 /* LGI: gi =0, SGI: gi = 1 */ 224 gi = (ht_info & 0x10) >> 4; 225 226 if (index == MWIFIEX_RATE_BITMAP_MCS0) { 227 if (gi == 1) 228 rate = 0x0D; /* MCS 32 SGI rate */ 229 else 230 rate = 0x0C; /* MCS 32 LGI rate */ 231 } else if (index < 16) { 232 if ((bw == 1) || (bw == 0)) 233 rate = mcs_rate[2 * (1 - bw) + gi][index]; 234 else 235 rate = mwifiex_data_rates[0]; 236 } else { 237 rate = mwifiex_data_rates[0]; 238 } 239 } else { 240 /* 11n non-HT rates */ 241 if (index >= MWIFIEX_SUPPORTED_RATES_EXT) 242 index = 0; 243 rate = mwifiex_data_rates[index]; 244 } 245 246 return rate; 247 } 248 249 /* This function maps an index in supported rates table into 250 * the corresponding data rate. 251 */ 252 u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv, 253 u8 index, u8 ht_info) 254 { 255 u32 mcs_num_supp = 256 (priv->adapter->user_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8; 257 u32 rate; 258 259 if (priv->adapter->is_hw_11ac_capable) 260 return mwifiex_index_to_acs_data_rate(priv, index, ht_info); 261 262 if (ht_info & BIT(0)) { 263 if (index == MWIFIEX_RATE_BITMAP_MCS0) { 264 if (ht_info & BIT(2)) 265 rate = 0x0D; /* MCS 32 SGI rate */ 266 else 267 rate = 0x0C; /* MCS 32 LGI rate */ 268 } else if (index < mcs_num_supp) { 269 if (ht_info & BIT(1)) { 270 if (ht_info & BIT(2)) 271 /* SGI, 40M */ 272 rate = mcs_rate[1][index]; 273 else 274 /* LGI, 40M */ 275 rate = mcs_rate[0][index]; 276 } else { 277 if (ht_info & BIT(2)) 278 /* SGI, 20M */ 279 rate = mcs_rate[3][index]; 280 else 281 /* LGI, 20M */ 282 rate = mcs_rate[2][index]; 283 } 284 } else 285 rate = mwifiex_data_rates[0]; 286 } else { 287 if (index >= MWIFIEX_SUPPORTED_RATES_EXT) 288 index = 0; 289 rate = mwifiex_data_rates[index]; 290 } 291 return rate; 292 } 293 294 /* 295 * This function returns the current active data rates. 296 * 297 * The result may vary depending upon connection status. 298 */ 299 u32 mwifiex_get_active_data_rates(struct mwifiex_private *priv, u8 *rates) 300 { 301 if (!priv->media_connected) 302 return mwifiex_get_supported_rates(priv, rates); 303 else 304 return mwifiex_copy_rates(rates, 0, 305 priv->curr_bss_params.data_rates, 306 priv->curr_bss_params.num_of_rates); 307 } 308 309 /* 310 * This function locates the Channel-Frequency-Power triplet based upon 311 * band and channel/frequency parameters. 312 */ 313 struct mwifiex_chan_freq_power * 314 mwifiex_get_cfp(struct mwifiex_private *priv, u8 band, u16 channel, u32 freq) 315 { 316 struct mwifiex_chan_freq_power *cfp = NULL; 317 struct ieee80211_supported_band *sband; 318 struct ieee80211_channel *ch = NULL; 319 int i; 320 321 if (!channel && !freq) 322 return cfp; 323 324 if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG) 325 sband = priv->wdev.wiphy->bands[NL80211_BAND_2GHZ]; 326 else 327 sband = priv->wdev.wiphy->bands[NL80211_BAND_5GHZ]; 328 329 if (!sband) { 330 mwifiex_dbg(priv->adapter, ERROR, 331 "%s: cannot find cfp by band %d\n", 332 __func__, band); 333 return cfp; 334 } 335 336 for (i = 0; i < sband->n_channels; i++) { 337 ch = &sband->channels[i]; 338 339 if (ch->flags & IEEE80211_CHAN_DISABLED) 340 continue; 341 342 if (freq) { 343 if (ch->center_freq == freq) 344 break; 345 } else { 346 /* find by valid channel*/ 347 if (ch->hw_value == channel || 348 channel == FIRST_VALID_CHANNEL) 349 break; 350 } 351 } 352 if (i == sband->n_channels) { 353 mwifiex_dbg(priv->adapter, WARN, 354 "%s: cannot find cfp by band %d\t" 355 "& channel=%d freq=%d\n", 356 __func__, band, channel, freq); 357 } else { 358 if (!ch) 359 return cfp; 360 361 priv->cfp.channel = ch->hw_value; 362 priv->cfp.freq = ch->center_freq; 363 priv->cfp.max_tx_power = ch->max_power; 364 cfp = &priv->cfp; 365 } 366 367 return cfp; 368 } 369 370 /* 371 * This function checks if the data rate is set to auto. 372 */ 373 u8 374 mwifiex_is_rate_auto(struct mwifiex_private *priv) 375 { 376 u32 i; 377 int rate_num = 0; 378 379 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates); i++) 380 if (priv->bitmap_rates[i]) 381 rate_num++; 382 383 if (rate_num > 1) 384 return true; 385 else 386 return false; 387 } 388 389 /* This function gets the supported data rates from bitmask inside 390 * cfg80211_scan_request. 391 */ 392 u32 mwifiex_get_rates_from_cfg80211(struct mwifiex_private *priv, 393 u8 *rates, u8 radio_type) 394 { 395 struct wiphy *wiphy = priv->adapter->wiphy; 396 struct cfg80211_scan_request *request = priv->scan_request; 397 u32 num_rates, rate_mask; 398 struct ieee80211_supported_band *sband; 399 int i; 400 401 if (radio_type) { 402 sband = wiphy->bands[NL80211_BAND_5GHZ]; 403 if (WARN_ON_ONCE(!sband)) 404 return 0; 405 rate_mask = request->rates[NL80211_BAND_5GHZ]; 406 } else { 407 sband = wiphy->bands[NL80211_BAND_2GHZ]; 408 if (WARN_ON_ONCE(!sband)) 409 return 0; 410 rate_mask = request->rates[NL80211_BAND_2GHZ]; 411 } 412 413 num_rates = 0; 414 for (i = 0; i < sband->n_bitrates; i++) { 415 if ((BIT(i) & rate_mask) == 0) 416 continue; /* skip rate */ 417 rates[num_rates++] = (u8)(sband->bitrates[i].bitrate / 5); 418 } 419 420 return num_rates; 421 } 422 423 /* This function gets the supported data rates. The function works in 424 * both Ad-Hoc and infra mode by printing the band and returning the 425 * data rates. 426 */ 427 u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates) 428 { 429 u32 k = 0; 430 struct mwifiex_adapter *adapter = priv->adapter; 431 432 if (priv->bss_mode == NL80211_IFTYPE_STATION || 433 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) { 434 switch (adapter->config_bands) { 435 case BAND_B: 436 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t" 437 "supported_rates_b\n", 438 adapter->config_bands); 439 k = mwifiex_copy_rates(rates, k, supported_rates_b, 440 sizeof(supported_rates_b)); 441 break; 442 case BAND_G: 443 case BAND_G | BAND_GN: 444 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t" 445 "supported_rates_g\n", 446 adapter->config_bands); 447 k = mwifiex_copy_rates(rates, k, supported_rates_g, 448 sizeof(supported_rates_g)); 449 break; 450 case BAND_B | BAND_G: 451 case BAND_A | BAND_B | BAND_G: 452 case BAND_A | BAND_B: 453 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN: 454 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN | BAND_AAC: 455 case BAND_B | BAND_G | BAND_GN: 456 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t" 457 "supported_rates_bg\n", 458 adapter->config_bands); 459 k = mwifiex_copy_rates(rates, k, supported_rates_bg, 460 sizeof(supported_rates_bg)); 461 break; 462 case BAND_A: 463 case BAND_A | BAND_G: 464 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t" 465 "supported_rates_a\n", 466 adapter->config_bands); 467 k = mwifiex_copy_rates(rates, k, supported_rates_a, 468 sizeof(supported_rates_a)); 469 break; 470 case BAND_AN: 471 case BAND_A | BAND_AN: 472 case BAND_A | BAND_AN | BAND_AAC: 473 case BAND_A | BAND_G | BAND_AN | BAND_GN: 474 case BAND_A | BAND_G | BAND_AN | BAND_GN | BAND_AAC: 475 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t" 476 "supported_rates_a\n", 477 adapter->config_bands); 478 k = mwifiex_copy_rates(rates, k, supported_rates_a, 479 sizeof(supported_rates_a)); 480 break; 481 case BAND_GN: 482 mwifiex_dbg(adapter, INFO, "info: infra band=%d\t" 483 "supported_rates_n\n", 484 adapter->config_bands); 485 k = mwifiex_copy_rates(rates, k, supported_rates_n, 486 sizeof(supported_rates_n)); 487 break; 488 } 489 } else { 490 /* Ad-hoc mode */ 491 switch (adapter->adhoc_start_band) { 492 case BAND_B: 493 mwifiex_dbg(adapter, INFO, "info: adhoc B\n"); 494 k = mwifiex_copy_rates(rates, k, adhoc_rates_b, 495 sizeof(adhoc_rates_b)); 496 break; 497 case BAND_G: 498 case BAND_G | BAND_GN: 499 mwifiex_dbg(adapter, INFO, "info: adhoc G only\n"); 500 k = mwifiex_copy_rates(rates, k, adhoc_rates_g, 501 sizeof(adhoc_rates_g)); 502 break; 503 case BAND_B | BAND_G: 504 case BAND_B | BAND_G | BAND_GN: 505 mwifiex_dbg(adapter, INFO, "info: adhoc BG\n"); 506 k = mwifiex_copy_rates(rates, k, adhoc_rates_bg, 507 sizeof(adhoc_rates_bg)); 508 break; 509 case BAND_A: 510 case BAND_A | BAND_AN: 511 mwifiex_dbg(adapter, INFO, "info: adhoc A\n"); 512 k = mwifiex_copy_rates(rates, k, adhoc_rates_a, 513 sizeof(adhoc_rates_a)); 514 break; 515 } 516 } 517 518 return k; 519 } 520 521 u8 mwifiex_adjust_data_rate(struct mwifiex_private *priv, 522 u8 rx_rate, u8 rate_info) 523 { 524 u8 rate_index = 0; 525 526 /* HT40 */ 527 if ((rate_info & BIT(0)) && (rate_info & BIT(1))) 528 rate_index = MWIFIEX_RATE_INDEX_MCS0 + 529 MWIFIEX_BW20_MCS_NUM + rx_rate; 530 else if (rate_info & BIT(0)) /* HT20 */ 531 rate_index = MWIFIEX_RATE_INDEX_MCS0 + rx_rate; 532 else 533 rate_index = (rx_rate > MWIFIEX_RATE_INDEX_OFDM0) ? 534 rx_rate - 1 : rx_rate; 535 536 return rate_index; 537 } 538