1/* 2 * Misc utility routines for WL and Apps 3 * This header file housing the define and function prototype use by 4 * both the wl driver, tools & Apps. 5 * 6 * Copyright (C) 2015, Broadcom Corporation. All Rights Reserved. 7 * 8 * Permission to use, copy, modify, and/or distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 15 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 17 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 18 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 * 20 * $Id: bcmwifi_channels.h 309193 2012-01-19 00:03:57Z $ 21 */ 22 23#ifndef _bcmwifi_channels_h_ 24#define _bcmwifi_channels_h_ 25 26 27/* A chanspec holds the channel number, band, bandwidth and control sideband */ 28typedef uint16 chanspec_t; 29 30/* channel defines */ 31#define CH_UPPER_SB 0x01 32#define CH_LOWER_SB 0x02 33#define CH_EWA_VALID 0x04 34#define CH_80MHZ_APART 16 35#define CH_40MHZ_APART 8 36#define CH_20MHZ_APART 4 37#define CH_10MHZ_APART 2 38#define CH_5MHZ_APART 1 /* 2G band channels are 5 Mhz apart */ 39#define CH_MAX_2G_CHANNEL 14 /* Max channel in 2G band */ 40#define MAXCHANNEL 224 /* max # supported channels. The max channel no is above, 41 * this is that + 1 rounded up to a multiple of NBBY (8). 42 * DO NOT MAKE it > 255: channels are uint8's all over 43 */ 44#define MAXCHANNEL_NUM (MAXCHANNEL - 1) /* max channel number */ 45 46/* make sure channel num is within valid range */ 47#define CH_NUM_VALID_RANGE(ch_num) ((ch_num) > 0 && (ch_num) <= MAXCHANNEL_NUM) 48 49#define CHSPEC_CTLOVLP(sp1, sp2, sep) (ABS(wf_chspec_ctlchan(sp1) - wf_chspec_ctlchan(sp2)) < \ 50 (sep)) 51 52/* All builds use the new 11ac ratespec/chanspec */ 53#undef D11AC_IOTYPES 54#define D11AC_IOTYPES 55 56#define WL_CHANSPEC_CHAN_MASK 0x00ff 57#define WL_CHANSPEC_CHAN_SHIFT 0 58#define WL_CHANSPEC_CHAN1_MASK 0x000f 59#define WL_CHANSPEC_CHAN1_SHIFT 0 60#define WL_CHANSPEC_CHAN2_MASK 0x00f0 61#define WL_CHANSPEC_CHAN2_SHIFT 4 62 63#define WL_CHANSPEC_CTL_SB_MASK 0x0700 64#define WL_CHANSPEC_CTL_SB_SHIFT 8 65#define WL_CHANSPEC_CTL_SB_LLL 0x0000 66#define WL_CHANSPEC_CTL_SB_LLU 0x0100 67#define WL_CHANSPEC_CTL_SB_LUL 0x0200 68#define WL_CHANSPEC_CTL_SB_LUU 0x0300 69#define WL_CHANSPEC_CTL_SB_ULL 0x0400 70#define WL_CHANSPEC_CTL_SB_ULU 0x0500 71#define WL_CHANSPEC_CTL_SB_UUL 0x0600 72#define WL_CHANSPEC_CTL_SB_UUU 0x0700 73#define WL_CHANSPEC_CTL_SB_LL WL_CHANSPEC_CTL_SB_LLL 74#define WL_CHANSPEC_CTL_SB_LU WL_CHANSPEC_CTL_SB_LLU 75#define WL_CHANSPEC_CTL_SB_UL WL_CHANSPEC_CTL_SB_LUL 76#define WL_CHANSPEC_CTL_SB_UU WL_CHANSPEC_CTL_SB_LUU 77#define WL_CHANSPEC_CTL_SB_L WL_CHANSPEC_CTL_SB_LLL 78#define WL_CHANSPEC_CTL_SB_U WL_CHANSPEC_CTL_SB_LLU 79#define WL_CHANSPEC_CTL_SB_LOWER WL_CHANSPEC_CTL_SB_LLL 80#define WL_CHANSPEC_CTL_SB_UPPER WL_CHANSPEC_CTL_SB_LLU 81#define WL_CHANSPEC_CTL_SB_NONE WL_CHANSPEC_CTL_SB_LLL 82 83#define WL_CHANSPEC_BW_MASK 0x3800 84#define WL_CHANSPEC_BW_SHIFT 11 85#define WL_CHANSPEC_BW_5 0x0000 86#define WL_CHANSPEC_BW_10 0x0800 87#define WL_CHANSPEC_BW_20 0x1000 88#define WL_CHANSPEC_BW_40 0x1800 89#define WL_CHANSPEC_BW_80 0x2000 90#define WL_CHANSPEC_BW_160 0x2800 91#define WL_CHANSPEC_BW_8080 0x3000 92 93#define WL_CHANSPEC_BAND_MASK 0xc000 94#define WL_CHANSPEC_BAND_SHIFT 14 95#define WL_CHANSPEC_BAND_2G 0x0000 96#define WL_CHANSPEC_BAND_3G 0x4000 97#define WL_CHANSPEC_BAND_4G 0x8000 98#define WL_CHANSPEC_BAND_5G 0xc000 99#define INVCHANSPEC 255 100 101/* channel defines */ 102#define LOWER_20_SB(channel) (((channel) > CH_10MHZ_APART) ? \ 103 ((channel) - CH_10MHZ_APART) : 0) 104#define UPPER_20_SB(channel) (((channel) < (MAXCHANNEL - CH_10MHZ_APART)) ? \ 105 ((channel) + CH_10MHZ_APART) : 0) 106 107#define LL_20_SB(channel) (((channel) > 3 * CH_10MHZ_APART) ? ((channel) - 3 * CH_10MHZ_APART) : 0) 108#define UU_20_SB(channel) (((channel) < (MAXCHANNEL - 3 * CH_10MHZ_APART)) ? \ 109 ((channel) + 3 * CH_10MHZ_APART) : 0) 110#define LU_20_SB(channel) LOWER_20_SB(channel) 111#define UL_20_SB(channel) UPPER_20_SB(channel) 112 113#define LOWER_40_SB(channel) ((channel) - CH_20MHZ_APART) 114#define UPPER_40_SB(channel) ((channel) + CH_20MHZ_APART) 115#define CHSPEC_WLCBANDUNIT(chspec) (CHSPEC_IS5G(chspec) ? BAND_5G_INDEX : BAND_2G_INDEX) 116#define CH20MHZ_CHSPEC(channel) (chanspec_t)((chanspec_t)(channel) | WL_CHANSPEC_BW_20 | \ 117 (((channel) <= CH_MAX_2G_CHANNEL) ? \ 118 WL_CHANSPEC_BAND_2G : WL_CHANSPEC_BAND_5G)) 119#define NEXT_20MHZ_CHAN(channel) (((channel) < (MAXCHANNEL - CH_20MHZ_APART)) ? \ 120 ((channel) + CH_20MHZ_APART) : 0) 121#define CH40MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ 122 ((channel) | (ctlsb) | WL_CHANSPEC_BW_40 | \ 123 ((channel) <= CH_MAX_2G_CHANNEL ? WL_CHANSPEC_BAND_2G : \ 124 WL_CHANSPEC_BAND_5G)) 125#define CH80MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ 126 ((channel) | (ctlsb) | \ 127 WL_CHANSPEC_BW_80 | WL_CHANSPEC_BAND_5G) 128#define CH160MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ 129 ((channel) | (ctlsb) | \ 130 WL_CHANSPEC_BW_160 | WL_CHANSPEC_BAND_5G) 131 132/* simple MACROs to get different fields of chanspec */ 133#ifdef WL11AC_80P80 134#define CHSPEC_CHANNEL(chspec) wf_chspec_channel(chspec) 135#else 136#define CHSPEC_CHANNEL(chspec) ((uint8)((chspec) & WL_CHANSPEC_CHAN_MASK)) 137#endif 138#define CHSPEC_CHAN1(chspec) ((chspec) & WL_CHANSPEC_CHAN1_MASK) >> WL_CHANSPEC_CHAN1_SHIFT 139#define CHSPEC_CHAN2(chspec) ((chspec) & WL_CHANSPEC_CHAN2_MASK) >> WL_CHANSPEC_CHAN2_SHIFT 140#define CHSPEC_BAND(chspec) ((chspec) & WL_CHANSPEC_BAND_MASK) 141#define CHSPEC_CTL_SB(chspec) ((chspec) & WL_CHANSPEC_CTL_SB_MASK) 142#define CHSPEC_BW(chspec) ((chspec) & WL_CHANSPEC_BW_MASK) 143 144#ifdef WL11N_20MHZONLY 145 146#define CHSPEC_IS10(chspec) 0 147#define CHSPEC_IS20(chspec) 1 148#ifndef CHSPEC_IS40 149#define CHSPEC_IS40(chspec) 0 150#endif 151#ifndef CHSPEC_IS80 152#define CHSPEC_IS80(chspec) 0 153#endif 154#ifndef CHSPEC_IS160 155#define CHSPEC_IS160(chspec) 0 156#endif 157#ifndef CHSPEC_IS8080 158#define CHSPEC_IS8080(chspec) 0 159#endif 160 161#else /* !WL11N_20MHZONLY */ 162 163#define CHSPEC_IS10(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_10) 164#define CHSPEC_IS20(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_20) 165#ifndef CHSPEC_IS40 166#define CHSPEC_IS40(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40) 167#endif 168#ifndef CHSPEC_IS80 169#define CHSPEC_IS80(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_80) 170#endif 171#ifndef CHSPEC_IS160 172#define CHSPEC_IS160(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_160) 173#endif 174#ifndef CHSPEC_IS8080 175#define CHSPEC_IS8080(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_8080) 176#endif 177 178#endif /* !WL11N_20MHZONLY */ 179 180//#define ACS_INTF_DETECT_PATCH 181#ifdef ACS_INTF_DETECT_PATCH 182#define CHSPEC_IS2G40(chspec) \ 183 ((((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_2G) && \ 184 (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40)) 185#endif 186 187#define CHSPEC_IS5G(chspec) (((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_5G) 188#define CHSPEC_IS2G(chspec) (((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_2G) 189#define CHSPEC_SB_UPPER(chspec) \ 190 ((((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_UPPER) && \ 191 (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40)) 192#define CHSPEC_SB_LOWER(chspec) \ 193 ((((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_LOWER) && \ 194 (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40)) 195#define CHSPEC2WLC_BAND(chspec) (CHSPEC_IS5G(chspec) ? WLC_BAND_5G : WLC_BAND_2G) 196 197/** 198 * Number of chars needed for wf_chspec_ntoa() destination character buffer. 199 */ 200#define CHANSPEC_STR_LEN 20 201 202 203#define CHSPEC_IS_BW_160_WIDE(chspec) (CHSPEC_BW(chspec) == WL_CHANSPEC_BW_160 ||\ 204 CHSPEC_BW(chspec) == WL_CHANSPEC_BW_8080) 205 206/* BW inequality comparisons, LE (<=), GE (>=), LT (<), GT (>), comparisons can be made 207* as simple numeric comparisons, with the exception that 160 is the same BW as 80+80, 208* but have different numeric values; (WL_CHANSPEC_BW_160 < WL_CHANSPEC_BW_8080). 209* 210* The LT/LE/GT/GE macros check first checks whether both chspec bandwidth and bw are 160 wide. 211* If both chspec bandwidth and bw is not 160 wide, then the comparison is made. 212*/ 213#define CHSPEC_BW_GE(chspec, bw) \ 214 ((CHSPEC_IS_BW_160_WIDE(chspec) &&\ 215 (bw == WL_CHANSPEC_BW_160 || bw == WL_CHANSPEC_BW_8080)) ||\ 216 (CHSPEC_BW(chspec) >= bw)) 217 218#define CHSPEC_BW_LE(chspec, bw) \ 219 ((CHSPEC_IS_BW_160_WIDE(chspec) &&\ 220 (bw == WL_CHANSPEC_BW_160 || bw == WL_CHANSPEC_BW_8080)) ||\ 221 (CHSPEC_BW(chspec) <= bw)) 222 223#define CHSPEC_BW_GT(chspec, bw) \ 224 (!(CHSPEC_IS_BW_160_WIDE(chspec) &&\ 225 (bw == WL_CHANSPEC_BW_160 || bw == WL_CHANSPEC_BW_8080)) &&\ 226 (CHSPEC_BW(chspec) > bw)) 227 228#define CHSPEC_BW_LT(chspec, bw) \ 229 (!(CHSPEC_IS_BW_160_WIDE(chspec) &&\ 230 (bw == WL_CHANSPEC_BW_160 || bw == WL_CHANSPEC_BW_8080)) &&\ 231 (CHSPEC_BW(chspec) < bw)) 232 233/* Legacy Chanspec defines 234 * These are the defines for the previous format of the chanspec_t 235 */ 236#define WL_LCHANSPEC_CHAN_MASK 0x00ff 237#define WL_LCHANSPEC_CHAN_SHIFT 0 238 239#define WL_LCHANSPEC_CTL_SB_MASK 0x0300 240#define WL_LCHANSPEC_CTL_SB_SHIFT 8 241#define WL_LCHANSPEC_CTL_SB_LOWER 0x0100 242#define WL_LCHANSPEC_CTL_SB_UPPER 0x0200 243#define WL_LCHANSPEC_CTL_SB_NONE 0x0300 244 245#define WL_LCHANSPEC_BW_MASK 0x0C00 246#define WL_LCHANSPEC_BW_SHIFT 10 247#define WL_LCHANSPEC_BW_10 0x0400 248#define WL_LCHANSPEC_BW_20 0x0800 249#define WL_LCHANSPEC_BW_40 0x0C00 250 251#define WL_LCHANSPEC_BAND_MASK 0xf000 252#define WL_LCHANSPEC_BAND_SHIFT 12 253#define WL_LCHANSPEC_BAND_5G 0x1000 254#define WL_LCHANSPEC_BAND_2G 0x2000 255 256#define LCHSPEC_CHANNEL(chspec) ((uint8)((chspec) & WL_LCHANSPEC_CHAN_MASK)) 257#define LCHSPEC_BAND(chspec) ((chspec) & WL_LCHANSPEC_BAND_MASK) 258#define LCHSPEC_CTL_SB(chspec) ((chspec) & WL_LCHANSPEC_CTL_SB_MASK) 259#define LCHSPEC_BW(chspec) ((chspec) & WL_LCHANSPEC_BW_MASK) 260#define LCHSPEC_IS10(chspec) (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_10) 261#define LCHSPEC_IS20(chspec) (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_20) 262#define LCHSPEC_IS40(chspec) (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_40) 263#define LCHSPEC_IS5G(chspec) (((chspec) & WL_LCHANSPEC_BAND_MASK) == WL_LCHANSPEC_BAND_5G) 264#define LCHSPEC_IS2G(chspec) (((chspec) & WL_LCHANSPEC_BAND_MASK) == WL_LCHANSPEC_BAND_2G) 265 266#define LCHSPEC_SB_UPPER(chspec) \ 267 ((((chspec) & WL_LCHANSPEC_CTL_SB_MASK) == WL_LCHANSPEC_CTL_SB_UPPER) && \ 268 (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_40)) 269#define LCHSPEC_SB_LOWER(chspec) \ 270 ((((chspec) & WL_LCHANSPEC_CTL_SB_MASK) == WL_LCHANSPEC_CTL_SB_LOWER) && \ 271 (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_40)) 272 273#define LCHSPEC_CREATE(chan, band, bw, sb) ((uint16)((chan) | (sb) | (bw) | (band))) 274 275#define CH20MHZ_LCHSPEC(channel) \ 276 (chanspec_t)((chanspec_t)(channel) | WL_LCHANSPEC_BW_20 | \ 277 WL_LCHANSPEC_CTL_SB_NONE | (((channel) <= CH_MAX_2G_CHANNEL) ? \ 278 WL_LCHANSPEC_BAND_2G : WL_LCHANSPEC_BAND_5G)) 279 280/* 281 * WF_CHAN_FACTOR_* constants are used to calculate channel frequency 282 * given a channel number. 283 * chan_freq = chan_factor * 500Mhz + chan_number * 5 284 */ 285 286/** 287 * Channel Factor for the starting frequence of 2.4 GHz channels. 288 * The value corresponds to 2407 MHz. 289 */ 290#define WF_CHAN_FACTOR_2_4_G 4814 /* 2.4 GHz band, 2407 MHz */ 291 292/** 293 * Channel Factor for the starting frequence of 5 GHz channels. 294 * The value corresponds to 5000 MHz. 295 */ 296#define WF_CHAN_FACTOR_5_G 10000 /* 5 GHz band, 5000 MHz */ 297 298/** 299 * Channel Factor for the starting frequence of 4.9 GHz channels. 300 * The value corresponds to 4000 MHz. 301 */ 302#define WF_CHAN_FACTOR_4_G 8000 /* 4.9 GHz band for Japan */ 303 304#define WLC_2G_25MHZ_OFFSET 5 /* 2.4GHz band channel offset */ 305 306/** 307 * No of sub-band vlaue of the specified Mhz chanspec 308 */ 309#define WF_NUM_SIDEBANDS_40MHZ 2 310#define WF_NUM_SIDEBANDS_80MHZ 4 311#define WF_NUM_SIDEBANDS_8080MHZ 4 312#define WF_NUM_SIDEBANDS_160MHZ 8 313 314/** 315 * Convert chanspec to ascii string 316 * 317 * @param chspec chanspec format 318 * @param buf ascii string of chanspec 319 * 320 * @return pointer to buf with room for at least CHANSPEC_STR_LEN bytes 321 * 322 * @see CHANSPEC_STR_LEN 323 */ 324extern char * wf_chspec_ntoa(chanspec_t chspec, char *buf); 325 326/** 327 * Convert ascii string to chanspec 328 * 329 * @param a pointer to input string 330 * 331 * @return >= 0 if successful or 0 otherwise 332 */ 333extern chanspec_t wf_chspec_aton(const char *a); 334 335/** 336 * Verify the chanspec fields are valid. 337 * 338 * Verify the chanspec is using a legal set field values, i.e. that the chanspec 339 * specified a band, bw, ctl_sb and channel and that the combination could be 340 * legal given some set of circumstances. 341 * 342 * @param chanspec input chanspec to verify 343 * 344 * @return TRUE if the chanspec is malformed, FALSE if it looks good. 345 */ 346extern bool wf_chspec_malformed(chanspec_t chanspec); 347 348/** 349 * Verify the chanspec specifies a valid channel according to 802.11. 350 * 351 * @param chanspec input chanspec to verify 352 * 353 * @return TRUE if the chanspec is a valid 802.11 channel 354 */ 355extern bool wf_chspec_valid(chanspec_t chanspec); 356 357/** 358 * Return the primary (control) channel. 359 * 360 * This function returns the channel number of the primary 20MHz channel. For 361 * 20MHz channels this is just the channel number. For 40MHz or wider channels 362 * it is the primary 20MHz channel specified by the chanspec. 363 * 364 * @param chspec input chanspec 365 * 366 * @return Returns the channel number of the primary 20MHz channel 367 */ 368extern uint8 wf_chspec_ctlchan(chanspec_t chspec); 369 370/** 371 * Return the primary (control) chanspec. 372 * 373 * This function returns the chanspec of the primary 20MHz channel. For 20MHz 374 * channels this is just the chanspec. For 40MHz or wider channels it is the 375 * chanspec of the primary 20MHZ channel specified by the chanspec. 376 * 377 * @param chspec input chanspec 378 * 379 * @return Returns the chanspec of the primary 20MHz channel 380 */ 381extern chanspec_t wf_chspec_ctlchspec(chanspec_t chspec); 382 383/** 384 * Return a channel number corresponding to a frequency. 385 * 386 * This function returns the chanspec for the primary 40MHz of an 80MHz channel. 387 * The control sideband specifies the same 20MHz channel that the 80MHz channel is using 388 * as the primary 20MHz channel. 389 */ 390extern chanspec_t wf_chspec_primary40_chspec(chanspec_t chspec); 391 392/* 393 * Return the channel number for a given frequency and base frequency. 394 * The returned channel number is relative to the given base frequency. 395 * If the given base frequency is zero, a base frequency of 5 GHz is assumed for 396 * frequencies from 5 - 6 GHz, and 2.407 GHz is assumed for 2.4 - 2.5 GHz. 397 * 398 * Frequency is specified in MHz. 399 * The base frequency is specified as (start_factor * 500 kHz). 400 * Constants WF_CHAN_FACTOR_2_4_G, WF_CHAN_FACTOR_5_G are defined for 401 * 2.4 GHz and 5 GHz bands. 402 * 403 * The returned channel will be in the range [1, 14] in the 2.4 GHz band 404 * and [0, 200] otherwise. 405 * -1 is returned if the start_factor is WF_CHAN_FACTOR_2_4_G and the 406 * frequency is not a 2.4 GHz channel, or if the frequency is not and even 407 * multiple of 5 MHz from the base frequency to the base plus 1 GHz. 408 * 409 * Reference 802.11 REVma, section 17.3.8.3, and 802.11B section 18.4.6.2 410 * 411 * @param freq frequency in MHz 412 * @param start_factor base frequency in 500 kHz units, e.g. 10000 for 5 GHz 413 * 414 * @return Returns a channel number 415 * 416 * @see WF_CHAN_FACTOR_2_4_G 417 * @see WF_CHAN_FACTOR_5_G 418 */ 419extern int wf_mhz2channel(uint freq, uint start_factor); 420 421/** 422 * Return the center frequency in MHz of the given channel and base frequency. 423 * 424 * Return the center frequency in MHz of the given channel and base frequency. 425 * The channel number is interpreted relative to the given base frequency. 426 * 427 * The valid channel range is [1, 14] in the 2.4 GHz band and [0, 200] otherwise. 428 * The base frequency is specified as (start_factor * 500 kHz). 429 * Constants WF_CHAN_FACTOR_2_4_G, WF_CHAN_FACTOR_5_G are defined for 430 * 2.4 GHz and 5 GHz bands. 431 * The channel range of [1, 14] is only checked for a start_factor of 432 * WF_CHAN_FACTOR_2_4_G (4814). 433 * Odd start_factors produce channels on .5 MHz boundaries, in which case 434 * the answer is rounded down to an integral MHz. 435 * -1 is returned for an out of range channel. 436 * 437 * Reference 802.11 REVma, section 17.3.8.3, and 802.11B section 18.4.6.2 438 * 439 * @param channel input channel number 440 * @param start_factor base frequency in 500 kHz units, e.g. 10000 for 5 GHz 441 * 442 * @return Returns a frequency in MHz 443 * 444 * @see WF_CHAN_FACTOR_2_4_G 445 * @see WF_CHAN_FACTOR_5_G 446 */ 447extern int wf_channel2mhz(uint channel, uint start_factor); 448 449/** 450 * Returns the chanspec 80Mhz channel corresponding to the following input 451 * parameters 452 * 453 * primary_channel - primary 20Mhz channel 454 * center_channel - center frequecny of the 80Mhz channel 455 * 456 * The center_channel can be one of {42, 58, 106, 122, 138, 155} 457 * 458 * returns INVCHANSPEC in case of error 459 */ 460extern chanspec_t wf_chspec_80(uint8 center_channel, uint8 primary_channel); 461 462/** 463 * Convert ctl chan and bw to chanspec 464 * 465 * @param ctl_ch channel 466 * @param bw bandwidth 467 * 468 * @return > 0 if successful or 0 otherwise 469 * 470 */ 471extern uint16 wf_channel2chspec(uint ctl_ch, uint bw); 472 473extern uint wf_channel2freq(uint channel); 474extern uint wf_freq2channel(uint freq); 475 476/* 477 * Returns the 80+80 MHz chanspec corresponding to the following input parameters 478 * 479 * primary_20mhz - Primary 20 MHz channel 480 * chan0_80MHz - center channel number of one frequency segment 481 * chan1_80MHz - center channel number of the other frequency segment 482 * 483 * Parameters chan0_80MHz and chan1_80MHz are channel numbers in {42, 58, 106, 122, 138, 155}. 484 * The primary channel must be contained in one of the 80MHz channels. This routine 485 * will determine which frequency segment is the primary 80 MHz segment. 486 * 487 * Returns INVCHANSPEC in case of error. 488 * 489 * Refer to IEEE802.11ac section 22.3.14 "Channelization". 490 */ 491extern chanspec_t wf_chspec_get8080_chspec(uint8 primary_20mhz, 492 uint8 chan0_80Mhz, uint8 chan1_80Mhz); 493 494/* 495 * Returns the primary 80 Mhz channel for the provided chanspec 496 * 497 * chanspec - Input chanspec for which the 80MHz primary channel has to be retrieved 498 * 499 * returns -1 in case the provided channel is 20/40 Mhz chanspec 500 */ 501extern uint8 wf_chspec_primary80_channel(chanspec_t chanspec); 502 503/* 504 * Returns the secondary 80 Mhz channel for the provided chanspec 505 * 506 * chanspec - Input chanspec for which the 80MHz secondary channel has to be retrieved 507 * 508 * returns -1 in case the provided channel is 20/40 Mhz chanspec 509 */ 510extern uint8 wf_chspec_secondary80_channel(chanspec_t chanspec); 511 512/* 513 * This function returns the chanspec for the primary 80MHz of an 160MHz or 80+80 channel. 514 */ 515extern chanspec_t wf_chspec_primary80_chspec(chanspec_t chspec); 516 517#ifdef WL11AC_80P80 518/* 519 * This function returns the centre chanel for the given chanspec. 520 * In case of 80+80 chanspec it returns the primary 80 Mhz centre channel 521 */ 522extern uint8 wf_chspec_channel(chanspec_t chspec); 523#endif 524#endif /* _bcmwifi_channels_h_ */ 525