/* * Copyright (c) 2010 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. */ #ifndef _bcmwifi_h_ #define _bcmwifi_h_ /* A chanspec holds the channel number, band, bandwidth and control sideband */ typedef u16 chanspec_t; /* channel defines */ #define CH_UPPER_SB 0x01 #define CH_LOWER_SB 0x02 #define CH_EWA_VALID 0x04 #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 WLC_MAX_2G_CHANNEL CH_MAX_2G_CHANNEL /* legacy define */ #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 u8's all over */ #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 #define WL_CHANSPEC_BAND_5G 0x1000 #define WL_CHANSPEC_BAND_2G 0x2000 #define INVCHANSPEC 255 /* used to calculate the chan_freq = chan_factor * 500Mhz + 5 * chan_number */ #define WF_CHAN_FACTOR_2_4_G 4814 /* 2.4 GHz band, 2407 MHz */ #define WF_CHAN_FACTOR_5_G 10000 /* 5 GHz band, 5000 MHz */ #define WF_CHAN_FACTOR_4_G 8000 /* 4.9 GHz band for Japan */ /* 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 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) ((u8)((chspec) & WL_CHANSPEC_CHAN_MASK)) #define CHSPEC_BAND(chspec) ((chspec) & WL_CHANSPEC_BAND_MASK) #ifdef WL11N_20MHZONLY #define CHSPEC_CTL_SB(chspec) WL_CHANSPEC_CTL_SB_NONE #define CHSPEC_BW(chspec) WL_CHANSPEC_BW_20 #define CHSPEC_IS10(chspec) 0 #define CHSPEC_IS20(chspec) 1 #ifndef CHSPEC_IS40 #define CHSPEC_IS40(chspec) 0 #endif #else /* !WL11N_20MHZONLY */ #define CHSPEC_CTL_SB(chspec) ((chspec) & WL_CHANSPEC_CTL_SB_MASK) #define CHSPEC_BW(chspec) ((chspec) & WL_CHANSPEC_BW_MASK) #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 /* defined rate in 500kbps */ #define WLC_MAXRATE 108 /* in 500kbps units */ #define WLC_RATE_1M 2 /* in 500kbps units */ #define WLC_RATE_2M 4 /* in 500kbps units */ #define WLC_RATE_5M5 11 /* in 500kbps units */ #define WLC_RATE_11M 22 /* in 500kbps units */ #define WLC_RATE_6M 12 /* in 500kbps units */ #define WLC_RATE_9M 18 /* in 500kbps units */ #define WLC_RATE_12M 24 /* in 500kbps units */ #define WLC_RATE_18M 36 /* in 500kbps units */ #define WLC_RATE_24M 48 /* in 500kbps units */ #define WLC_RATE_36M 72 /* in 500kbps units */ #define WLC_RATE_48M 96 /* in 500kbps units */ #define WLC_RATE_54M 108 /* in 500kbps units */ #define WLC_2G_25MHZ_OFFSET 5 /* 2.4GHz band channel offset */ /* * Verify the chanspec is using a legal set of parameters, i.e. that the * chanspec specified a band, bw, ctl_sb and channel and that the * combination could be legal given any set of circumstances. * RETURNS: true is the chanspec is malformed, false if it looks good. */ extern bool wf_chspec_malformed(chanspec_t chanspec); /* * This function returns the channel number that control traffic is being sent on, for legacy * channels this is just the channel number, for 40MHZ channels it is the upper or lowre 20MHZ * sideband depending on the chanspec selected */ extern u8 wf_chspec_ctlchan(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 */ extern int wf_mhz2channel(uint freq, uint start_factor); #endif /* _bcmwifi_h_ */