linux-arkmicro/linux/drivers/net/wireless/realtek/bcmdhd/bcmwifi_channels.h

/*
 * Misc utility routines for WL and Apps
 * This header file housing the define and function prototype use by
 * both the wl driver, tools & Apps.
 *
 * Portions of this code are copyright (c) 2020 Cypress Semiconductor Corporation
 *
 * Copyright (C) 1999-2020, Broadcom Corporation
 *
 *      Unless you and Broadcom execute a separate written software license
 * agreement governing use of this software, this software is licensed to you
 * under the terms of the GNU General Public License version 2 (the "GPL"),
 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
 * following added to such license:
 *
 *      As a special exception, the copyright holders of this software give you
 * permission to link this software with independent modules, and to copy and
 * distribute the resulting executable under terms of your choice, provided that
 * you also meet, for each linked independent module, the terms and conditions of
 * the license of that module.  An independent module is a module which is not
 * derived from this software.  The special exception does not apply to any
 * modifications of the software.
 *
 *      Notwithstanding the above, under no circumstances may you combine this
 * software in any way with any other Broadcom software provided under a license
 * other than the GPL, without Broadcom's express prior written consent.
 *
 *
 * <<Broadcom-WL-IPTag/Open:>>
 *
 * $Id: bcmwifi_channels.h 695288 2017-04-19 17:20:39Z $
 */

#ifndef	_bcmwifi_channels_h_
#define	_bcmwifi_channels_h_

/* A chanspec holds the channel number, band, bandwidth and primary 20MHz sideband */
typedef uint16 chanspec_t;
typedef uint16 chanspec_band_t;
typedef uint16 chanspec_bw_t;
typedef uint16 chanspec_subband_t;

/* channel defines */
#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_MIN_2G_CHANNEL                 1u    /* Min channel in 2G band */
#define CH_MAX_2G_CHANNEL                14u    /* Max channel in 2G band */
#define CH_MIN_2G_40M_CHANNEL             3u    /* Min 40MHz center channel in 2G band */
#define CH_MAX_2G_40M_CHANNEL            11u    /* Max 40MHz center channel in 2G band */

/* maximum # channels the s/w supports */
#define MAXCHANNEL		224	/* max # supported channels. The max channel no is above,
					 * this is that + 1 rounded up to a multiple of NBBY (8).
					 * DO NOT MAKE it > 255: channels are uint8's all over
					 */
#define MAXCHANNEL_NUM	(MAXCHANNEL - 1)	/* max channel number */

#define INVCHANNEL              255     /* error value for a bad channel */

/* channel bitvec */
typedef struct {
	uint8   vec[MAXCHANNEL/8];   /* bitvec of channels */
} chanvec_t;

/* make sure channel num is within valid range */
#define CH_NUM_VALID_RANGE(ch_num) ((ch_num) > 0 && (ch_num) <= MAXCHANNEL_NUM)

#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

#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_CTL_SB_NONE		WL_CHANSPEC_CTL_SB_LLL

#define WL_CHANSPEC_BW_MASK		0x3800u
#define WL_CHANSPEC_BW_SHIFT		11u
#define WL_CHANSPEC_BW_5		0x0000u
#define WL_CHANSPEC_BW_10		0x0800u
#define WL_CHANSPEC_BW_20		0x1000u
#define WL_CHANSPEC_BW_40		0x1800u
#define WL_CHANSPEC_BW_80		0x2000u
#define WL_CHANSPEC_BW_160		0x2800u
#define WL_CHANSPEC_BW_8080		0x3000u

#define WL_CHANSPEC_BAND_MASK		0xc000u
#define WL_CHANSPEC_BAND_SHIFT		14u
#define WL_CHANSPEC_BAND_2G		0x0000u
#define WL_CHANSPEC_BAND_3G		0x4000u
#define WL_CHANSPEC_BAND_4G		0x8000u
#define WL_CHANSPEC_BAND_5G		0xc000u
#define INVCHANSPEC			255u
#define MAX_CHANSPEC			0xFFFFu

#define WL_CHANNEL_BAND(ch) (((ch) <= CH_MAX_2G_CHANNEL) ? \
	WL_CHANSPEC_BAND_2G : WL_CHANSPEC_BAND_5G)

/* 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)

/* pass a 80MHz channel number (uint8) to get respective LL, UU, LU, UL */
#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 */
#ifdef WL11AC_80P80
#define CHSPEC_CHANNEL(chspec)	wf_chspec_channel(chspec)
#else
#define CHSPEC_CHANNEL(chspec)	((uint8)((chspec) & WL_CHANSPEC_CHAN_MASK))
#endif // endif
#define CHSPEC_CHAN1(chspec)	((chspec) & WL_CHANSPEC_CHAN1_MASK) >> WL_CHANSPEC_CHAN1_SHIFT
#define CHSPEC_CHAN2(chspec)	((chspec) & WL_CHANSPEC_CHAN2_MASK) >> WL_CHANSPEC_CHAN2_SHIFT
#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_IS20(chspec)	1
#define CHSPEC_IS20_2G(chspec)	((((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_20) && \
								CHSPEC_IS2G(chspec))
#ifndef CHSPEC_IS40
#define CHSPEC_IS40(chspec)	0
#endif // endif
#ifndef CHSPEC_IS80
#define CHSPEC_IS80(chspec)	0
#endif // endif
#ifndef CHSPEC_IS160
#define CHSPEC_IS160(chspec)	0
#endif // endif
#ifndef CHSPEC_IS8080
#define CHSPEC_IS8080(chspec)	0
#endif // endif

/* see FOREACH_20_SB in !WL11N_20MHZONLY section */
#define FOREACH_20_SB(chspec, channel) \
		for (channel = CHSPEC_CHANNEL(chspec); channel; channel = 0)

/* see GET_ALL_SB in !WL11N_20MHZONLY section */
#define GET_ALL_SB(chspec, psb) do { \
	psb[0] = CHSPEC_CHANNEL(chspec); \
} while (0)

#else /* !WL11N_20MHZONLY */

#define CHSPEC_IS20(chspec)	(((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_20)
#define CHSPEC_IS20_5G(chspec)	((((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_20) && \
								CHSPEC_IS5G(chspec))
#ifndef CHSPEC_IS40
#define CHSPEC_IS40(chspec)	(((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_40)
#endif // endif
#ifndef CHSPEC_IS80
#define CHSPEC_IS80(chspec)	(((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_80)
#endif // endif
#ifndef CHSPEC_IS160
#define CHSPEC_IS160(chspec)	(((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_160)
#endif // endif
#ifndef CHSPEC_IS8080
#define CHSPEC_IS8080(chspec)	(((chspec) & WL_CHANSPEC_BW_MASK) == WL_CHANSPEC_BW_8080)
#endif // endif

/* pass a center channel and get channel offset from it by 10MHz */
#define CH_OFF_10MHZ_MULTIPLES(channel, offset)  ((uint8) (((offset) < 0) ? \
		(((channel) > (WL_CHANSPEC_CHAN_MASK & ((uint16)((-(offset)) * CH_10MHZ_APART)))) ?\
			((channel) + (offset) * CH_10MHZ_APART) : 0) : \
			(((channel) < (uint16)(MAXCHANNEL - (offset) * CH_10MHZ_APART)) ? \
				((channel) + (offset) * CH_10MHZ_APART) : 0)))

#if defined(WL11AC_80P80) || defined(WL11AC_160)
/* pass a 160MHz center channel to get 20MHz subband channel numbers */
#define LLL_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel, -7)
#define LLU_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel, -5)
#define LUL_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel, -3)
#define LUU_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel, -1)
#define ULL_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel,  1)
#define ULU_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel,  3)
#define UUL_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel,  5)
#define UUU_20_SB_160(channel)  CH_OFF_10MHZ_MULTIPLES(channel,  7)

/* given an 80p80 channel, return the lower 80MHz sideband */
#define LOWER_80_SB(chspec)  (wf_chspec_primary80_channel(chspec) < \
		wf_chspec_secondary80_channel(chspec) ? \
		wf_chspec_primary80_channel(chspec) : wf_chspec_secondary80_channel(chspec))

/* given an 80p80 channel, return the upper 80MHz sideband */
#define UPPER_80_SB(chspec)  (wf_chspec_primary80_channel(chspec) > \
		wf_chspec_secondary80_channel(chspec) ? \
		wf_chspec_primary80_channel(chspec) : wf_chspec_secondary80_channel(chspec))

/* pass an 80P80 chanspec (not channel) to get 20MHz subnand channel numbers */
#define LLL_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(LOWER_80_SB(chspec), -3)
#define LLU_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(LOWER_80_SB(chspec), -1)
#define LUL_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(LOWER_80_SB(chspec),  1)
#define LUU_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(LOWER_80_SB(chspec),  3)
#define ULL_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(UPPER_80_SB(chspec), -3)
#define ULU_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(UPPER_80_SB(chspec), -1)
#define UUL_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(UPPER_80_SB(chspec),  1)
#define UUU_20_SB_8080(chspec)  CH_OFF_10MHZ_MULTIPLES(UPPER_80_SB(chspec),  3)

/* get lowest 20MHz sideband of a given chspec
 * (works with 20, 40, 80, 160, 80p80)
 */
#define CH_FIRST_20_SB(chspec)  ((uint8) (\
		CHSPEC_IS160(chspec) ? LLL_20_SB_160(CHSPEC_CHANNEL(chspec)) : (\
		CHSPEC_IS8080(chspec) ? LLL_20_SB_8080(chspec) : (\
			CHSPEC_IS80(chspec) ? LL_20_SB(CHSPEC_CHANNEL(chspec)) : (\
				CHSPEC_IS40(chspec) ? LOWER_20_SB(CHSPEC_CHANNEL(chspec)) : \
					CHSPEC_CHANNEL(chspec))))))

/* get upper most 20MHz sideband of a given chspec
 * (works with 20, 40, 80, 160, 80p80)
 */
#define CH_LAST_20_SB(chspec)  ((uint8) (\
		CHSPEC_IS160(chspec) ? UUU_20_SB_160(CHSPEC_CHANNEL(chspec)) : (\
		CHSPEC_IS8080(chspec) ? UUU_20_SB_8080(chspec) : (\
			CHSPEC_IS80(chspec) ? UU_20_SB(CHSPEC_CHANNEL(chspec)) : (\
				CHSPEC_IS40(chspec) ? UPPER_20_SB(CHSPEC_CHANNEL(chspec)) : \
					CHSPEC_CHANNEL(chspec))))))

/* call this with chspec and a valid 20MHz sideband of this channel to get the next 20MHz sideband
 * (works with 80p80 only)
 * resolves to 0 if called with upper most channel
 */
#define CH_NEXT_20_SB_IN_8080(chspec, channel)  ((uint8) (\
		((uint8) ((channel) + CH_20MHZ_APART) > CH_LAST_20_SB(chspec) ? 0 : \
			((channel) == LUU_20_SB_8080(chspec) ? ULL_20_SB_8080(chspec) : \
				(channel) + CH_20MHZ_APART))))

/* call this with chspec and a valid 20MHz sideband of this channel to get the next 20MHz sideband
 * (works with 20, 40, 80, 160, 80p80)
 * resolves to 0 if called with upper most channel
 */
#define CH_NEXT_20_SB(chspec, channel)  ((uint8) (\
		(CHSPEC_IS8080(chspec) ? CH_NEXT_20_SB_IN_8080((chspec), (channel)) : \
			((uint8) ((channel) + CH_20MHZ_APART) > CH_LAST_20_SB(chspec) ? 0 : \
				((channel) + CH_20MHZ_APART)))))

#else /* WL11AC_80P80, WL11AC_160 */

#define LLL_20_SB_160(channel)  0
#define LLU_20_SB_160(channel)  0
#define LUL_20_SB_160(channel)  0
#define LUU_20_SB_160(channel)  0
#define ULL_20_SB_160(channel)  0
#define ULU_20_SB_160(channel)  0
#define UUL_20_SB_160(channel)  0
#define UUU_20_SB_160(channel)  0

#define LOWER_80_SB(chspec)	0

#define UPPER_80_SB(chspec)	0

#define LLL_20_SB_8080(chspec)	0
#define LLU_20_SB_8080(chspec)	0
#define LUL_20_SB_8080(chspec)	0
#define LUU_20_SB_8080(chspec)	0
#define ULL_20_SB_8080(chspec)	0
#define ULU_20_SB_8080(chspec)	0
#define UUL_20_SB_8080(chspec)	0
#define UUU_20_SB_8080(chspec)	0

/* get lowest 20MHz sideband of a given chspec
 * (works with 20, 40, 80)
 */
#define CH_FIRST_20_SB(chspec)  ((uint8) (\
			CHSPEC_IS80(chspec) ? LL_20_SB(CHSPEC_CHANNEL(chspec)) : (\
				CHSPEC_IS40(chspec) ? LOWER_20_SB(CHSPEC_CHANNEL(chspec)) : \
					CHSPEC_CHANNEL(chspec))))
/* get upper most 20MHz sideband of a given chspec
 * (works with 20, 40, 80, 160, 80p80)
 */
#define CH_LAST_20_SB(chspec)  ((uint8) (\
			CHSPEC_IS80(chspec) ? UU_20_SB(CHSPEC_CHANNEL(chspec)) : (\
				CHSPEC_IS40(chspec) ? UPPER_20_SB(CHSPEC_CHANNEL(chspec)) : \
					CHSPEC_CHANNEL(chspec))))

/* call this with chspec and a valid 20MHz sideband of this channel to get the next 20MHz sideband
 * (works with 20, 40, 80, 160, 80p80)
 * resolves to 0 if called with upper most channel
 */
#define CH_NEXT_20_SB(chspec, channel)  ((uint8) (\
			((uint8) ((channel) + CH_20MHZ_APART) > CH_LAST_20_SB(chspec) ? 0 : \
				((channel) + CH_20MHZ_APART))))

#endif /* WL11AC_80P80, WL11AC_160 */

/* Iterator for 20MHz side bands of a chanspec: (chanspec_t chspec, uint8 channel)
 * 'chspec' chanspec_t of interest (used in loop, better to pass a resolved value than a macro)
 * 'channel' must be a variable (not an expression).
 */
#define FOREACH_20_SB(chspec, channel) \
		for (channel = CH_FIRST_20_SB(chspec); channel; \
			channel = CH_NEXT_20_SB((chspec), channel))

/* Uses iterator to populate array with all side bands involved (sorted lower to upper).
 *     'chspec' chanspec_t of interest
 *     'psb' pointer to uint8 array of enough size to hold all side bands for the given chspec
 */
#define GET_ALL_SB(chspec, psb) do { \
		uint8 channel, idx = 0; \
		chanspec_t chspec_local = chspec; \
		FOREACH_20_SB(chspec_local, channel) \
			(psb)[idx++] = channel; \
} while (0)

/* given a chanspec of any bw, tests if primary20 SB is in lower 20, 40, 80 respectively */
#define IS_CTL_IN_L20(chspec) !((chspec) & WL_CHANSPEC_CTL_SB_U) /* CTL SB is in low 20 of any 40 */
#define IS_CTL_IN_L40(chspec) !((chspec) & WL_CHANSPEC_CTL_SB_UL)	/* in low 40 of any 80 */
#define IS_CTL_IN_L80(chspec) !((chspec) & WL_CHANSPEC_CTL_SB_ULL)	/* in low 80 of 80p80/160 */

#endif /* !WL11N_20MHZONLY */

/* ULB introduced macros. Remove once ULB is cleaned from phy code */
#define CHSPEC_IS2P5(chspec)	0
#define CHSPEC_IS5(chspec)	0
#define CHSPEC_IS10(chspec)	0
#define CHSPEC_ISLE20(chspec)	(CHSPEC_IS20(chspec))
#define CHSPEC_BW_LE20(chspec)	(CHSPEC_IS20(chspec))

#define BW_LE40(bw)		((bw) == WL_CHANSPEC_BW_20 || ((bw) == WL_CHANSPEC_BW_40))
#define BW_LE80(bw)		(BW_LE40(bw) || ((bw) == WL_CHANSPEC_BW_80))
#define BW_LE160(bw)		(BW_LE80(bw) || ((bw) == WL_CHANSPEC_BW_160))

#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

/*
 * This function returns TRUE if both the chanspec can co-exist in PHY.
 * Addition to primary20 channel, the function checks for side band for 2g 40 channels
 */
extern bool wf_chspec_coexist(chanspec_t chspec1, chanspec_t chspec2);

#define CHSPEC_IS_BW_160_WIDE(chspec) (CHSPEC_BW(chspec) == WL_CHANSPEC_BW_160 ||\
	CHSPEC_BW(chspec) == WL_CHANSPEC_BW_8080)

/* BW inequality comparisons, LE (<=), GE (>=), LT (<), GT (>), comparisons can be made
* as simple numeric comparisons, with the exception that 160 is the same BW as 80+80,
* but have different numeric values; (WL_CHANSPEC_BW_160 < WL_CHANSPEC_BW_8080).
*
* The LT/LE/GT/GE macros check first checks whether both chspec bandwidth and bw are 160 wide.
* If both chspec bandwidth and bw is not 160 wide, then the comparison is made.
*/
#define CHSPEC_BW_GE(chspec, bw) \
		((CHSPEC_IS_BW_160_WIDE(chspec) &&\
		((bw) == WL_CHANSPEC_BW_160 || (bw) == WL_CHANSPEC_BW_8080)) ||\
		(CHSPEC_BW(chspec) >= (bw)))

#define CHSPEC_BW_LE(chspec, bw) \
		((CHSPEC_IS_BW_160_WIDE(chspec) &&\
		((bw) == WL_CHANSPEC_BW_160 || (bw) == WL_CHANSPEC_BW_8080)) ||\
		(CHSPEC_BW(chspec) <= (bw)))

#define CHSPEC_BW_GT(chspec, bw) \
		(!(CHSPEC_IS_BW_160_WIDE(chspec) &&\
		((bw) == WL_CHANSPEC_BW_160 || (bw) == WL_CHANSPEC_BW_8080)) &&\
		(CHSPEC_BW(chspec) > (bw)))

#define CHSPEC_BW_LT(chspec, bw) \
		(!(CHSPEC_IS_BW_160_WIDE(chspec) &&\
		((bw) == WL_CHANSPEC_BW_160 || (bw) == WL_CHANSPEC_BW_8080)) &&\
		(CHSPEC_BW(chspec) < (bw)))

/* 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_SB_UPPER(chspec)	\
	((((chspec) & WL_LCHANSPEC_CTL_SB_MASK) == WL_LCHANSPEC_CTL_SB_UPPER) && \
	(((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_40))
#define LCHSPEC_SB_LOWER(chspec)	\
	((((chspec) & WL_LCHANSPEC_CTL_SB_MASK) == WL_LCHANSPEC_CTL_SB_LOWER) && \
	(((chspec) & WL_LCHANSPEC_BW_MASK) == WL_LCHANSPEC_BW_40))

#define LCHSPEC_CREATE(chan, band, bw, sb)  ((uint16)((chan) | (sb) | (bw) | (band)))

#define CH20MHZ_LCHSPEC(channel) \
	(chanspec_t)((chanspec_t)(channel) | WL_LCHANSPEC_BW_20 | \
	WL_LCHANSPEC_CTL_SB_NONE | (((channel) <= CH_MAX_2G_CHANNEL) ? \
	WL_LCHANSPEC_BAND_2G : WL_LCHANSPEC_BAND_5G))

#define GET_ALL_EXT wf_get_all_ext

/*
 * 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 */

/**
 *  No of sub-band vlaue of the specified Mhz chanspec
 */
#define WF_NUM_SIDEBANDS_40MHZ   2
#define WF_NUM_SIDEBANDS_80MHZ   4
#define WF_NUM_SIDEBANDS_8080MHZ 4
#define WF_NUM_SIDEBANDS_160MHZ  8

/**
 * Return the chanspec bandwidth in MHz
 * Bandwidth of 160 MHz will be returned for 80+80MHz chanspecs.
 *
 * @param	chspec		chanspec_t
 *
 * @return	bandwidth of chspec in MHz units
 */
extern uint wf_bw_chspec_to_mhz(chanspec_t chspec);

/**
 * 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
 *		Original chanspec in case of error
 *
 * @see		CHANSPEC_STR_LEN
 */
extern char * wf_chspec_ntoa_ex(chanspec_t chspec, char *buf);

/**
 * 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
 *		NULL in case of error
 *
 * @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, primary_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 20MHz 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_primary20_chan(chanspec_t chspec);

/* alias for old function name */
#define wf_chspec_ctlchan(c) wf_chspec_primary20_chan(c)

/**
 * Return the bandwidth string.
 *
 * This function returns the bandwidth string for the passed chanspec.
 *
 * @param	chspec    input chanspec
 *
 * @return Returns the bandwidth string:
 *         "5", "10", "20", "40", "80", "160", "80+80"
 */
extern const char *wf_chspec_to_bw_str(chanspec_t chspec);

/**
 * Create a 20MHz chanspec for the given band.
 */
chanspec_t wf_create_20MHz_chspec(uint channel, chanspec_band_t band);

/**
 * Return the primary 20MHz 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_primary20_chspec(chanspec_t chspec);

/* alias for old function name */
#define wf_chspec_ctlchspec(c) wf_chspec_primary20_chspec(c)

/**
 * Return the primary 40MHz chanspec.
 *
 * This function returns the chanspec for the primary 40MHz of an 80MHz or wider channel.
 * The primary 20MHz channel of the returned 40MHz chanspec is the same as the primary 20MHz
 * channel of the input chanspec.
 */
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 802.11-2016, section 17.3.8.3 and section 16.3.6.3
 *
 * @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 802.11-2016, section 17.3.8.3 and section 16.3.6.3
 *
 * @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);

/**
 * Returns the chanspec 80Mhz channel corresponding to the following input
 * parameters
 *
 *	primary_channel - primary 20Mhz channel
 *	center_channel   - center frequecny of the 80Mhz channel
 *
 * The center_channel can be one of {42, 58, 106, 122, 138, 155}
 *
 * returns INVCHANSPEC in case of error
 */
extern chanspec_t wf_chspec_80(uint8 center_channel, uint8 primary_channel);

/**
 * 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);

/*
 * Returns the 80+80 MHz chanspec corresponding to the following input parameters
 *
 *    primary_20mhz - Primary 20 MHz channel
 *    chan0_80MHz - center channel number of one frequency segment
 *    chan1_80MHz - center channel number of the other frequency segment
 *
 * Parameters chan0_80MHz and chan1_80MHz are channel numbers in {42, 58, 106, 122, 138, 155}.
 * The primary channel must be contained in one of the 80MHz channels. This routine
 * will determine which frequency segment is the primary 80 MHz segment.
 *
 * Returns INVCHANSPEC in case of error.
 *
 * Refer to 802.11-2016 section 22.3.14 "Channelization".
 */
extern chanspec_t wf_chspec_get8080_chspec(uint8 primary_20mhz,
	uint8 chan0_80Mhz, uint8 chan1_80Mhz);

/**
 * Returns the center channel of the primary 80 MHz sub-band of the provided chanspec
 *
 * @param	chspec    input chanspec
 *
 * @return	center channel number of the primary 80MHz sub-band of the input.
 *		Will return the center channel of an input 80MHz chspec.
 *		Will return INVCHANNEL if the chspec is malformed or less than 80MHz bw.
 */
extern uint8 wf_chspec_primary80_channel(chanspec_t chanspec);

/**
 * Returns the center channel of the secondary 80 MHz sub-band of the provided chanspec
 *
 * @param	chspec    input chanspec
 *
 * @return	center channel number of the secondary 80MHz sub-band of the input.
 *		Will return INVCHANNEL if the chspec is malformed or bw is not greater than 80MHz.
 */
extern uint8 wf_chspec_secondary80_channel(chanspec_t chanspec);

/**
 * Returns the chanspec for the primary 80MHz sub-band of an 160MHz or 80+80 channel
 *
 * @param	chspec    input chanspec
 *
 * @return	An 80MHz chanspec describing the primary 80MHz sub-band of the input.
 *		Will return an input 80MHz chspec as is.
 *		Will return INVCHANSPEC if the chspec is malformed or less than 80MHz bw.
 */
extern chanspec_t wf_chspec_primary80_chspec(chanspec_t chspec);

/**
 * Returns the chanspec for the secondary 80MHz sub-band of an 160MHz or 80+80 channel
 * The sideband in the chanspec is always set to WL_CHANSPEC_CTL_SB_LL since this sub-band
 * does not contain the primary 20MHz channel.
 *
 * @param	chspec    input chanspec
 *
 * @return	An 80MHz chanspec describing the secondary 80MHz sub-band of the input.
 *		Will return INVCHANSPEC if the chspec is malformed or bw is not greater than 80MHz.
 */
extern chanspec_t wf_chspec_secondary80_chspec(chanspec_t chspec);

/*
 * For 160MHz or 80P80 chanspec, set ch[0]/ch[1] to be the low/high 80 Mhz channels
 *
 * For 20/40/80MHz chanspec, set ch[0] to be the center freq, and chan[1]=-1
 */
extern void wf_chspec_get_80p80_channels(chanspec_t chspec, uint8 *ch);

#ifdef WL11AC_80P80
/*
 * This function returns the centre chanel for the given chanspec.
 * In case of 80+80 chanspec it returns the primary 80 Mhz centre channel
 */
extern uint8 wf_chspec_channel(chanspec_t chspec);
#endif // endif
extern chanspec_t wf_channel_create_chspec_frm_opclass(uint8 opclass, uint8 channel);
extern int wf_channel_create_opclass_frm_chspec(chanspec_t chspec);

/* Populates array with all 20MHz side bands of a given chanspec_t in the following order:
 *		primary20, ext20, two ext40s, four ext80s.
 *     'chspec' is the chanspec of interest
 *     'pext' must point to an uint8 array of long enough to hold all side bands of the given chspec
 *
 * Works with 20, 40, 80, 80p80 and 160MHz chspec
 */

extern void wf_get_all_ext(chanspec_t chspec, uint8 *chan_ptr);

/*
 * Given two chanspecs, returns true if they overlap.
 * (Overlap: At least one 20MHz subband is common between the two chanspecs provided)
 */
extern bool wf_chspec_overlap(chanspec_t chspec0, chanspec_t chspec1);

extern uint8 channel_bw_to_width(chanspec_t chspec);
#endif	/* _bcmwifi_channels_h_ */