| /* |
| * Misc utility routines for WL and Apps |
| * This header file housing the define and function prototype use by |
| * both the wl driver, tools & Apps. |
| * |
| * Copyright (C) 1999-2013, Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| * |
| * $Id: bcmwifi_channels.h 309193 2012-01-19 00:03:57Z $ |
| */ |
| |
| #ifndef _bcmwifi_channels_h_ |
| #define _bcmwifi_channels_h_ |
| |
| |
| /* A chanspec holds the channel number, band, bandwidth and control sideband */ |
| typedef uint16 chanspec_t; |
| |
| /* channel defines */ |
| #define CH_UPPER_SB 0x01 |
| #define CH_LOWER_SB 0x02 |
| #define CH_EWA_VALID 0x04 |
| #define CH_80MHZ_APART 16 |
| #define CH_40MHZ_APART 8 |
| #define CH_20MHZ_APART 4 |
| #define CH_10MHZ_APART 2 |
| #define CH_5MHZ_APART 1 /* 2G band channels are 5 Mhz apart */ |
| #define CH_MAX_2G_CHANNEL 14 /* Max channel in 2G band */ |
| #define MAXCHANNEL 224 /* max # supported channels. The max channel no is 216, |
| * this is that + 1 rounded up to a multiple of NBBY (8). |
| * DO NOT MAKE it > 255: channels are uint8's all over |
| */ |
| #define CHSPEC_CTLOVLP(sp1, sp2, sep) (ABS(wf_chspec_ctlchan(sp1) - wf_chspec_ctlchan(sp2)) < \ |
| (sep)) |
| |
| /* All builds use the new 11ac ratespec/chanspec */ |
| #undef D11AC_IOTYPES |
| #define D11AC_IOTYPES |
| |
| #ifndef D11AC_IOTYPES |
| |
| #define WL_CHANSPEC_CHAN_MASK 0x00ff |
| #define WL_CHANSPEC_CHAN_SHIFT 0 |
| |
| #define WL_CHANSPEC_CTL_SB_MASK 0x0300 |
| #define WL_CHANSPEC_CTL_SB_SHIFT 8 |
| #define WL_CHANSPEC_CTL_SB_LOWER 0x0100 |
| #define WL_CHANSPEC_CTL_SB_UPPER 0x0200 |
| #define WL_CHANSPEC_CTL_SB_NONE 0x0300 |
| |
| #define WL_CHANSPEC_BW_MASK 0x0C00 |
| #define WL_CHANSPEC_BW_SHIFT 10 |
| #define WL_CHANSPEC_BW_10 0x0400 |
| #define WL_CHANSPEC_BW_20 0x0800 |
| #define WL_CHANSPEC_BW_40 0x0C00 |
| |
| #define WL_CHANSPEC_BAND_MASK 0xf000 |
| #define WL_CHANSPEC_BAND_SHIFT 12 |
| #ifdef WL_CHANSPEC_BAND_5G |
| #undef WL_CHANSPEC_BAND_5G |
| #endif |
| #ifdef WL_CHANSPEC_BAND_2G |
| #undef WL_CHANSPEC_BAND_2G |
| #endif |
| #define WL_CHANSPEC_BAND_5G 0x1000 |
| #define WL_CHANSPEC_BAND_2G 0x2000 |
| #define INVCHANSPEC 255 |
| |
| /* channel defines */ |
| #define LOWER_20_SB(channel) (((channel) > CH_10MHZ_APART) ? ((channel) - CH_10MHZ_APART) : 0) |
| #define UPPER_20_SB(channel) (((channel) < (MAXCHANNEL - CH_10MHZ_APART)) ? \ |
| ((channel) + CH_10MHZ_APART) : 0) |
| |
| #define LL_20_SB(channel) (((channel) > 3 * CH_10MHZ_APART) ? ((channel) - 3 * CH_10MHZ_APART) : 0) |
| #define UU_20_SB(channel) (((channel) < (MAXCHANNEL - 3 * CH_10MHZ_APART)) ? \ |
| ((channel) + 3 * CH_10MHZ_APART) : 0) |
| #define LU_20_SB(channel) LOWER_20_SB(channel) |
| #define UL_20_SB(channel) UPPER_20_SB(channel) |
| |
| #define CHSPEC_WLCBANDUNIT(chspec) (CHSPEC_IS5G(chspec) ? BAND_5G_INDEX : BAND_2G_INDEX) |
| #define CH20MHZ_CHSPEC(channel) (chanspec_t)((chanspec_t)(channel) | WL_CHANSPEC_BW_20 | \ |
| WL_CHANSPEC_CTL_SB_NONE | (((channel) <= CH_MAX_2G_CHANNEL) ? \ |
| WL_CHANSPEC_BAND_2G : WL_CHANSPEC_BAND_5G)) |
| #define NEXT_20MHZ_CHAN(channel) (((channel) < (MAXCHANNEL - CH_20MHZ_APART)) ? \ |
| ((channel) + CH_20MHZ_APART) : 0) |
| #define CH40MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ |
| ((channel) | (ctlsb) | WL_CHANSPEC_BW_40 | \ |
| ((channel) <= CH_MAX_2G_CHANNEL ? WL_CHANSPEC_BAND_2G : \ |
| WL_CHANSPEC_BAND_5G)) |
| #define CHSPEC_CHANNEL(chspec) ((uint8)((chspec) & WL_CHANSPEC_CHAN_MASK)) |
| #define CHSPEC_BAND(chspec) ((chspec) & WL_CHANSPEC_BAND_MASK) |
| |
| /* chanspec stores radio channel & flags to indicate control channel location, i.e. upper/lower */ |
| #define CHSPEC_CTL_SB(chspec) ((chspec) & WL_CHANSPEC_CTL_SB_MASK) |
| #define CHSPEC_BW(chspec) ((chspec) & WL_CHANSPEC_BW_MASK) |
| |
| #ifdef WL11N_20MHZONLY |
| |
| #define CHSPEC_IS10(chspec) 0 |
| #define CHSPEC_IS20(chspec) 1 |
| #ifndef CHSPEC_IS40 |
| #define CHSPEC_IS40(chspec) 0 |
| #endif |
| |
| #else /* !WL11N_20MHZONLY */ |
| |
| #define CHSPEC_IS10(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_10) |
| #define CHSPEC_IS20(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_20) |
| #ifndef CHSPEC_IS40 |
| #define CHSPEC_IS40(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40) |
| #endif |
| |
| #endif /* !WL11N_20MHZONLY */ |
| |
| #define CHSPEC_IS5G(chspec) (((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_5G) |
| #define CHSPEC_IS2G(chspec) (((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_2G) |
| #define CHSPEC_SB_NONE(chspec) (((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_NONE) |
| #define CHSPEC_SB_UPPER(chspec) (((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_UPPER) |
| #define CHSPEC_SB_LOWER(chspec) (((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_LOWER) |
| #define CHSPEC_CTL_CHAN(chspec) ((CHSPEC_SB_LOWER(chspec)) ? \ |
| (LOWER_20_SB(((chspec) & WL_CHANSPEC_CHAN_MASK))) : \ |
| (UPPER_20_SB(((chspec) & WL_CHANSPEC_CHAN_MASK)))) |
| #define CHSPEC2WLC_BAND(chspec) (CHSPEC_IS5G(chspec) ? WLC_BAND_5G : WLC_BAND_2G) |
| |
| #define CHANSPEC_STR_LEN 8 |
| |
| #else /* D11AC_IOTYPES */ |
| |
| #define WL_CHANSPEC_CHAN_MASK 0x00ff |
| #define WL_CHANSPEC_CHAN_SHIFT 0 |
| #define WL_CHANSPEC_CHAN1_MASK 0x000f |
| #define WL_CHANSPEC_CHAN1_SHIFT 0 |
| #define WL_CHANSPEC_CHAN2_MASK 0x00f0 |
| #define WL_CHANSPEC_CHAN2_SHIFT 4 |
| |
| #define WL_CHANSPEC_CTL_SB_MASK 0x0700 |
| #define WL_CHANSPEC_CTL_SB_SHIFT 8 |
| #define WL_CHANSPEC_CTL_SB_LLL 0x0000 |
| #define WL_CHANSPEC_CTL_SB_LLU 0x0100 |
| #define WL_CHANSPEC_CTL_SB_LUL 0x0200 |
| #define WL_CHANSPEC_CTL_SB_LUU 0x0300 |
| #define WL_CHANSPEC_CTL_SB_ULL 0x0400 |
| #define WL_CHANSPEC_CTL_SB_ULU 0x0500 |
| #define WL_CHANSPEC_CTL_SB_UUL 0x0600 |
| #define WL_CHANSPEC_CTL_SB_UUU 0x0700 |
| #define WL_CHANSPEC_CTL_SB_LL WL_CHANSPEC_CTL_SB_LLL |
| #define WL_CHANSPEC_CTL_SB_LU WL_CHANSPEC_CTL_SB_LLU |
| #define WL_CHANSPEC_CTL_SB_UL WL_CHANSPEC_CTL_SB_LUL |
| #define WL_CHANSPEC_CTL_SB_UU WL_CHANSPEC_CTL_SB_LUU |
| #define WL_CHANSPEC_CTL_SB_L WL_CHANSPEC_CTL_SB_LLL |
| #define WL_CHANSPEC_CTL_SB_U WL_CHANSPEC_CTL_SB_LLU |
| #define WL_CHANSPEC_CTL_SB_LOWER WL_CHANSPEC_CTL_SB_LLL |
| #define WL_CHANSPEC_CTL_SB_UPPER WL_CHANSPEC_CTL_SB_LLU |
| |
| #define WL_CHANSPEC_BW_MASK 0x3800 |
| #define WL_CHANSPEC_BW_SHIFT 11 |
| #define WL_CHANSPEC_BW_5 0x0000 |
| #define WL_CHANSPEC_BW_10 0x0800 |
| #define WL_CHANSPEC_BW_20 0x1000 |
| #define WL_CHANSPEC_BW_40 0x1800 |
| #define WL_CHANSPEC_BW_80 0x2000 |
| #define WL_CHANSPEC_BW_160 0x2800 |
| #define WL_CHANSPEC_BW_8080 0x3000 |
| |
| #define WL_CHANSPEC_BAND_MASK 0xc000 |
| #define WL_CHANSPEC_BAND_SHIFT 14 |
| #define WL_CHANSPEC_BAND_2G 0x0000 |
| #define WL_CHANSPEC_BAND_3G 0x4000 |
| #define WL_CHANSPEC_BAND_4G 0x8000 |
| #define WL_CHANSPEC_BAND_5G 0xc000 |
| #define INVCHANSPEC 255 |
| |
| /* channel defines */ |
| #define LOWER_20_SB(channel) (((channel) > CH_10MHZ_APART) ? \ |
| ((channel) - CH_10MHZ_APART) : 0) |
| #define UPPER_20_SB(channel) (((channel) < (MAXCHANNEL - CH_10MHZ_APART)) ? \ |
| ((channel) + CH_10MHZ_APART) : 0) |
| |
| #define LL_20_SB(channel) (((channel) > 3 * CH_10MHZ_APART) ? ((channel) - 3 * CH_10MHZ_APART) : 0) |
| #define UU_20_SB(channel) (((channel) < (MAXCHANNEL - 3 * CH_10MHZ_APART)) ? \ |
| ((channel) + 3 * CH_10MHZ_APART) : 0) |
| #define LU_20_SB(channel) LOWER_20_SB(channel) |
| #define UL_20_SB(channel) UPPER_20_SB(channel) |
| |
| #define LOWER_40_SB(channel) ((channel) - CH_20MHZ_APART) |
| #define UPPER_40_SB(channel) ((channel) + CH_20MHZ_APART) |
| #define CHSPEC_WLCBANDUNIT(chspec) (CHSPEC_IS5G(chspec) ? BAND_5G_INDEX : BAND_2G_INDEX) |
| #define CH20MHZ_CHSPEC(channel) (chanspec_t)((chanspec_t)(channel) | WL_CHANSPEC_BW_20 | \ |
| (((channel) <= CH_MAX_2G_CHANNEL) ? \ |
| WL_CHANSPEC_BAND_2G : WL_CHANSPEC_BAND_5G)) |
| #define NEXT_20MHZ_CHAN(channel) (((channel) < (MAXCHANNEL - CH_20MHZ_APART)) ? \ |
| ((channel) + CH_20MHZ_APART) : 0) |
| #define CH40MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ |
| ((channel) | (ctlsb) | WL_CHANSPEC_BW_40 | \ |
| ((channel) <= CH_MAX_2G_CHANNEL ? WL_CHANSPEC_BAND_2G : \ |
| WL_CHANSPEC_BAND_5G)) |
| #define CH80MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ |
| ((channel) | (ctlsb) | \ |
| WL_CHANSPEC_BW_80 | WL_CHANSPEC_BAND_5G) |
| #define CH160MHZ_CHSPEC(channel, ctlsb) (chanspec_t) \ |
| ((channel) | (ctlsb) | \ |
| WL_CHANSPEC_BW_160 | WL_CHANSPEC_BAND_5G) |
| |
| /* simple MACROs to get different fields of chanspec */ |
| #define CHSPEC_CHANNEL(chspec) ((uint8)((chspec) & WL_CHANSPEC_CHAN_MASK)) |
| #define CHSPEC_CHAN1(chspec) ((chspec) & WL_CHANSPEC_CHAN1_MASK) |
| #define CHSPEC_CHAN2(chspec) ((chspec) & WL_CHANSPEC_CHAN2_MASK) |
| #define CHSPEC_BAND(chspec) ((chspec) & WL_CHANSPEC_BAND_MASK) |
| #define CHSPEC_CTL_SB(chspec) ((chspec) & WL_CHANSPEC_CTL_SB_MASK) |
| #define CHSPEC_BW(chspec) ((chspec) & WL_CHANSPEC_BW_MASK) |
| |
| #ifdef WL11N_20MHZONLY |
| |
| #define CHSPEC_IS10(chspec) 0 |
| #define CHSPEC_IS20(chspec) 1 |
| #ifndef CHSPEC_IS40 |
| #define CHSPEC_IS40(chspec) 0 |
| #endif |
| #ifndef CHSPEC_IS80 |
| #define CHSPEC_IS80(chspec) 0 |
| #endif |
| #ifndef CHSPEC_IS160 |
| #define CHSPEC_IS160(chspec) 0 |
| #endif |
| #ifndef CHSPEC_IS8080 |
| #define CHSPEC_IS8080(chspec) 0 |
| #endif |
| |
| #else /* !WL11N_20MHZONLY */ |
| |
| #define CHSPEC_IS10(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_10) |
| #define CHSPEC_IS20(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_20) |
| #ifndef CHSPEC_IS40 |
| #define CHSPEC_IS40(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40) |
| #endif |
| #ifndef CHSPEC_IS80 |
| #define CHSPEC_IS80(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_80) |
| #endif |
| #ifndef CHSPEC_IS160 |
| #define CHSPEC_IS160(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_160) |
| #endif |
| #ifndef CHSPEC_IS8080 |
| #define CHSPEC_IS8080(chspec) (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_8080) |
| #endif |
| |
| #endif /* !WL11N_20MHZONLY */ |
| |
| #define CHSPEC_IS5G(chspec) (((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_5G) |
| #define CHSPEC_IS2G(chspec) (((chspec) & WL_CHANSPEC_BAND_MASK) == WL_CHANSPEC_BAND_2G) |
| #define CHSPEC_SB_UPPER(chspec) \ |
| ((((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_UPPER) && \ |
| (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40)) |
| #define CHSPEC_SB_LOWER(chspec) \ |
| ((((chspec) & WL_CHANSPEC_CTL_SB_MASK) == WL_CHANSPEC_CTL_SB_LOWER) && \ |
| (((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40)) |
| #define CHSPEC2WLC_BAND(chspec) (CHSPEC_IS5G(chspec) ? WLC_BAND_5G : WLC_BAND_2G) |
| |
| /** |
| * Number of chars needed for wf_chspec_ntoa() destination character buffer. |
| */ |
| #define CHANSPEC_STR_LEN 20 |
| |
| |
| /* Legacy Chanspec defines |
| * These are the defines for the previous format of the chanspec_t |
| */ |
| #define WL_LCHANSPEC_CHAN_MASK 0x00ff |
| #define WL_LCHANSPEC_CHAN_SHIFT 0 |
| |
| #define WL_LCHANSPEC_CTL_SB_MASK 0x0300 |
| #define WL_LCHANSPEC_CTL_SB_SHIFT 8 |
| #define WL_LCHANSPEC_CTL_SB_LOWER 0x0100 |
| #define WL_LCHANSPEC_CTL_SB_UPPER 0x0200 |
| #define WL_LCHANSPEC_CTL_SB_NONE 0x0300 |
| |
| #define WL_LCHANSPEC_BW_MASK 0x0C00 |
| #define WL_LCHANSPEC_BW_SHIFT 10 |
| #define WL_LCHANSPEC_BW_10 0x0400 |
| #define WL_LCHANSPEC_BW_20 0x0800 |
| #define WL_LCHANSPEC_BW_40 0x0C00 |
| |
| #define WL_LCHANSPEC_BAND_MASK 0xf000 |
| #define WL_LCHANSPEC_BAND_SHIFT 12 |
| #define WL_LCHANSPEC_BAND_5G 0x1000 |
| #define WL_LCHANSPEC_BAND_2G 0x2000 |
| |
| #define LCHSPEC_CHANNEL(chspec) ((uint8)((chspec) & WL_LCHANSPEC_CHAN_MASK)) |
| #define LCHSPEC_BAND(chspec) ((chspec) & WL_LCHANSPEC_BAND_MASK) |
| #define LCHSPEC_CTL_SB(chspec) ((chspec) & WL_LCHANSPEC_CTL_SB_MASK) |
| #define LCHSPEC_BW(chspec) ((chspec) & WL_LCHANSPEC_BW_MASK) |
| #define LCHSPEC_IS10(chspec) (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_10) |
| #define LCHSPEC_IS20(chspec) (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_20) |
| #define LCHSPEC_IS40(chspec) (((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_40) |
| #define LCHSPEC_IS5G(chspec) (((chspec) & WL_LCHANSPEC_BAND_MASK) == WL_LCHANSPEC_BAND_5G) |
| #define LCHSPEC_IS2G(chspec) (((chspec) & WL_LCHANSPEC_BAND_MASK) == WL_LCHANSPEC_BAND_2G) |
| |
| #define LCHSPEC_CREATE(chan, band, bw, sb) ((uint16)((chan) | (sb) | (bw) | (band))) |
| |
| #endif /* D11AC_IOTYPES */ |
| |
| /* |
| * WF_CHAN_FACTOR_* constants are used to calculate channel frequency |
| * given a channel number. |
| * chan_freq = chan_factor * 500Mhz + chan_number * 5 |
| */ |
| |
| /** |
| * Channel Factor for the starting frequence of 2.4 GHz channels. |
| * The value corresponds to 2407 MHz. |
| */ |
| #define WF_CHAN_FACTOR_2_4_G 4814 /* 2.4 GHz band, 2407 MHz */ |
| |
| /** |
| * Channel Factor for the starting frequence of 5 GHz channels. |
| * The value corresponds to 5000 MHz. |
| */ |
| #define WF_CHAN_FACTOR_5_G 10000 /* 5 GHz band, 5000 MHz */ |
| |
| /** |
| * Channel Factor for the starting frequence of 4.9 GHz channels. |
| * The value corresponds to 4000 MHz. |
| */ |
| #define WF_CHAN_FACTOR_4_G 8000 /* 4.9 GHz band for Japan */ |
| |
| #define WLC_2G_25MHZ_OFFSET 5 /* 2.4GHz band channel offset */ |
| |
| /** |
| * Convert chanspec to ascii string |
| * |
| * @param chspec chanspec format |
| * @param buf ascii string of chanspec |
| * |
| * @return pointer to buf with room for at least CHANSPEC_STR_LEN bytes |
| * |
| * @see CHANSPEC_STR_LEN |
| */ |
| extern char * wf_chspec_ntoa(chanspec_t chspec, char *buf); |
| |
| /** |
| * Convert ascii string to chanspec |
| * |
| * @param a pointer to input string |
| * |
| * @return >= 0 if successful or 0 otherwise |
| */ |
| extern chanspec_t wf_chspec_aton(const char *a); |
| |
| /** |
| * Verify the chanspec fields are valid. |
| * |
| * Verify the chanspec is using a legal set field values, i.e. that the chanspec |
| * specified a band, bw, ctl_sb and channel and that the combination could be |
| * legal given some set of circumstances. |
| * |
| * @param chanspec input chanspec to verify |
| * |
| * @return TRUE if the chanspec is malformed, FALSE if it looks good. |
| */ |
| extern bool wf_chspec_malformed(chanspec_t chanspec); |
| |
| /** |
| * Verify the chanspec specifies a valid channel according to 802.11. |
| * |
| * @param chanspec input chanspec to verify |
| * |
| * @return TRUE if the chanspec is a valid 802.11 channel |
| */ |
| extern bool wf_chspec_valid(chanspec_t chanspec); |
| |
| /** |
| * Return the primary (control) channel. |
| * |
| * This function returns the channel number of the primary 20MHz channel. For |
| * 20MHz channels this is just the channel number. For 40MHz or wider channels |
| * it is the primary 20MHz channel specified by the chanspec. |
| * |
| * @param chspec input chanspec |
| * |
| * @return Returns the channel number of the primary 20MHz channel |
| */ |
| extern uint8 wf_chspec_ctlchan(chanspec_t chspec); |
| |
| /** |
| * Return the primary (control) chanspec. |
| * |
| * This function returns the chanspec of the primary 20MHz channel. For 20MHz |
| * channels this is just the chanspec. For 40MHz or wider channels it is the |
| * chanspec of the primary 20MHZ channel specified by the chanspec. |
| * |
| * @param chspec input chanspec |
| * |
| * @return Returns the chanspec of the primary 20MHz channel |
| */ |
| extern chanspec_t wf_chspec_ctlchspec(chanspec_t chspec); |
| |
| /** |
| * Return a channel number corresponding to a frequency. |
| * |
| * This function returns the chanspec for the primary 40MHz of an 80MHz channel. |
| * The control sideband specifies the same 20MHz channel that the 80MHz channel is using |
| * as the primary 20MHz channel. |
| */ |
| extern chanspec_t wf_chspec_primary40_chspec(chanspec_t chspec); |
| |
| /* |
| * Return the channel number for a given frequency and base frequency. |
| * The returned channel number is relative to the given base frequency. |
| * If the given base frequency is zero, a base frequency of 5 GHz is assumed for |
| * frequencies from 5 - 6 GHz, and 2.407 GHz is assumed for 2.4 - 2.5 GHz. |
| * |
| * Frequency is specified in MHz. |
| * The base frequency is specified as (start_factor * 500 kHz). |
| * Constants WF_CHAN_FACTOR_2_4_G, WF_CHAN_FACTOR_5_G are defined for |
| * 2.4 GHz and 5 GHz bands. |
| * |
| * The returned channel will be in the range [1, 14] in the 2.4 GHz band |
| * and [0, 200] otherwise. |
| * -1 is returned if the start_factor is WF_CHAN_FACTOR_2_4_G and the |
| * frequency is not a 2.4 GHz channel, or if the frequency is not and even |
| * multiple of 5 MHz from the base frequency to the base plus 1 GHz. |
| * |
| * Reference 802.11 REVma, section 17.3.8.3, and 802.11B section 18.4.6.2 |
| * |
| * @param freq frequency in MHz |
| * @param start_factor base frequency in 500 kHz units, e.g. 10000 for 5 GHz |
| * |
| * @return Returns a channel number |
| * |
| * @see WF_CHAN_FACTOR_2_4_G |
| * @see WF_CHAN_FACTOR_5_G |
| */ |
| extern int wf_mhz2channel(uint freq, uint start_factor); |
| |
| /** |
| * Return the center frequency in MHz of the given channel and base frequency. |
| * |
| * Return the center frequency in MHz of the given channel and base frequency. |
| * The channel number is interpreted relative to the given base frequency. |
| * |
| * The valid channel range is [1, 14] in the 2.4 GHz band and [0, 200] otherwise. |
| * The base frequency is specified as (start_factor * 500 kHz). |
| * Constants WF_CHAN_FACTOR_2_4_G, WF_CHAN_FACTOR_5_G are defined for |
| * 2.4 GHz and 5 GHz bands. |
| * The channel range of [1, 14] is only checked for a start_factor of |
| * WF_CHAN_FACTOR_2_4_G (4814). |
| * Odd start_factors produce channels on .5 MHz boundaries, in which case |
| * the answer is rounded down to an integral MHz. |
| * -1 is returned for an out of range channel. |
| * |
| * Reference 802.11 REVma, section 17.3.8.3, and 802.11B section 18.4.6.2 |
| * |
| * @param channel input channel number |
| * @param start_factor base frequency in 500 kHz units, e.g. 10000 for 5 GHz |
| * |
| * @return Returns a frequency in MHz |
| * |
| * @see WF_CHAN_FACTOR_2_4_G |
| * @see WF_CHAN_FACTOR_5_G |
| */ |
| extern int wf_channel2mhz(uint channel, uint start_factor); |
| |
| /** |
| * Convert ctl chan and bw to chanspec |
| * |
| * @param ctl_ch channel |
| * @param bw bandwidth |
| * |
| * @return > 0 if successful or 0 otherwise |
| * |
| */ |
| extern uint16 wf_channel2chspec(uint ctl_ch, uint bw); |
| |
| extern uint wf_channel2freq(uint channel); |
| extern uint wf_freq2channel(uint freq); |
| |
| |
| #endif /* _bcmwifi_channels_h_ */ |
