[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / marvell / mwifiex / cfp.c

/*
 * Marvell Wireless LAN device driver: Channel, Frequence and Power
 *
 * Copyright (C) 2011-2014, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "cfg80211.h"

/* 100mW */
#define MWIFIEX_TX_PWR_DEFAULT     20
/* 100mW */
#define MWIFIEX_TX_PWR_US_DEFAULT      20
/* 50mW */
#define MWIFIEX_TX_PWR_JP_DEFAULT      16
/* 100mW */
#define MWIFIEX_TX_PWR_FR_100MW        20
/* 10mW */
#define MWIFIEX_TX_PWR_FR_10MW         10
/* 100mW */
#define MWIFIEX_TX_PWR_EMEA_DEFAULT    20

static u8 adhoc_rates_b[B_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0 };

static u8 adhoc_rates_g[G_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
					       0xb0, 0x48, 0x60, 0x6c, 0 };

static u8 adhoc_rates_bg[BG_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96,
						 0x0c, 0x12, 0x18, 0x24,
						 0x30, 0x48, 0x60, 0x6c, 0 };

static u8 adhoc_rates_a[A_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
					       0xb0, 0x48, 0x60, 0x6c, 0 };
static u8 supported_rates_a[A_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
					0xb0, 0x48, 0x60, 0x6c, 0 };
static u16 mwifiex_data_rates[MWIFIEX_SUPPORTED_RATES_EXT] = { 0x02, 0x04,
					0x0B, 0x16, 0x00, 0x0C, 0x12, 0x18,
					0x24, 0x30, 0x48, 0x60, 0x6C, 0x90,
					0x0D, 0x1A, 0x27, 0x34, 0x4E, 0x68,
					0x75, 0x82, 0x0C, 0x1B, 0x36, 0x51,
					0x6C, 0xA2, 0xD8, 0xF3, 0x10E, 0x00 };

static u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 };

static u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
					0x30, 0x48, 0x60, 0x6c, 0 };

static u8 supported_rates_bg[BG_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x0c,
					0x12, 0x16, 0x18, 0x24, 0x30, 0x48,
					0x60, 0x6c, 0 };

u16 region_code_index[MWIFIEX_MAX_REGION_CODE] = { 0x00, 0x10, 0x20, 0x30,
						0x31, 0x32, 0x40, 0x41, 0x50 };

static u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 };

/* For every mcs_rate line, the first 8 bytes are for stream 1x1,
 * and all 16 bytes are for stream 2x2.
 */
static const u16 mcs_rate[4][16] = {
	/* LGI 40M */
	{ 0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e,
	  0x36, 0x6c, 0xa2, 0xd8, 0x144, 0x1b0, 0x1e6, 0x21c },

	/* SGI 40M */
	{ 0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c,
	  0x3c, 0x78, 0xb4, 0xf0, 0x168, 0x1e0, 0x21c, 0x258 },

	/* LGI 20M */
	{ 0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82,
	  0x1a, 0x34, 0x4e, 0x68, 0x9c, 0xd0, 0xea, 0x104 },

	/* SGI 20M */
	{ 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90,
	  0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 }
};

/* AC rates */
static const u16 ac_mcs_rate_nss1[8][10] = {
	/* LG 160M */
	{ 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
	  0x492, 0x57C, 0x618 },

	/* SG 160M */
	{ 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
	  0x514, 0x618, 0x6C6 },

	/* LG 80M */
	{ 0x3B, 0x75, 0xB0, 0xEA, 0x15F, 0x1D4, 0x20F,
	  0x249, 0x2BE, 0x30C },

	/* SG 80M */
	{ 0x41, 0x82, 0xC3, 0x104, 0x186, 0x208, 0x249,
	  0x28A, 0x30C, 0x363 },

	/* LG 40M */
	{ 0x1B, 0x36, 0x51, 0x6C, 0xA2, 0xD8, 0xF3,
	  0x10E, 0x144, 0x168 },

	/* SG 40M */
	{ 0x1E, 0x3C, 0x5A, 0x78, 0xB4, 0xF0, 0x10E,
	  0x12C, 0x168, 0x190 },

	/* LG 20M */
	{ 0xD, 0x1A, 0x27, 0x34, 0x4E, 0x68, 0x75, 0x82, 0x9C, 0x00 },

	/* SG 20M */
	{ 0xF, 0x1D, 0x2C, 0x3A, 0x57, 0x74, 0x82, 0x91, 0xAE, 0x00 },
};

/* NSS2 note: the value in the table is 2 multiplier of the actual rate */
static const u16 ac_mcs_rate_nss2[8][10] = {
	/* LG 160M */
	{ 0xEA, 0x1D4, 0x2BE, 0x3A8, 0x57C, 0x750, 0x83A,
	  0x924, 0xAF8, 0xC30 },

	/* SG 160M */
	{ 0x104, 0x208, 0x30C, 0x410, 0x618, 0x820, 0x924,
	  0xA28, 0xC30, 0xD8B },

	/* LG 80M */
	{ 0x75, 0xEA, 0x15F, 0x1D4, 0x2BE, 0x3A8, 0x41D,
	  0x492, 0x57C, 0x618 },

	/* SG 80M */
	{ 0x82, 0x104, 0x186, 0x208, 0x30C, 0x410, 0x492,
	  0x514, 0x618, 0x6C6 },

	/* LG 40M */
	{ 0x36, 0x6C, 0xA2, 0xD8, 0x144, 0x1B0, 0x1E6,
	  0x21C, 0x288, 0x2D0 },

	/* SG 40M */
	{ 0x3C, 0x78, 0xB4, 0xF0, 0x168, 0x1E0, 0x21C,
	  0x258, 0x2D0, 0x320 },

	/* LG 20M */
	{ 0x1A, 0x34, 0x4A, 0x68, 0x9C, 0xD0, 0xEA, 0x104,
	  0x138, 0x00 },

	/* SG 20M */
	{ 0x1D, 0x3A, 0x57, 0x74, 0xAE, 0xE6, 0x104, 0x121,
	  0x15B, 0x00 },
};

struct region_code_mapping {
	u8 code;
	u8 region[IEEE80211_COUNTRY_STRING_LEN];
};

static struct region_code_mapping region_code_mapping_t[] = {
	{ 0x10, "US " }, /* US FCC */
	{ 0x20, "CA " }, /* IC Canada */
	{ 0x30, "FR " }, /* France */
	{ 0x31, "ES " }, /* Spain */
	{ 0x32, "FR " }, /* France */
	{ 0x40, "JP " }, /* Japan */
	{ 0x41, "JP " }, /* Japan */
	{ 0x50, "CN " }, /* China */
};

/* This function converts integer code to region string */
u8 *mwifiex_11d_code_2_region(u8 code)
{
	u8 i;
	u8 size = sizeof(region_code_mapping_t)/
				sizeof(struct region_code_mapping);

	/* Look for code in mapping table */
	for (i = 0; i < size; i++)
		if (region_code_mapping_t[i].code == code)
			return region_code_mapping_t[i].region;

	return NULL;
}

/*
 * This function maps an index in supported rates table into
 * the corresponding data rate.
 */
u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv,
				   u8 index, u8 ht_info)
{
	u32 rate = 0;
	u8 mcs_index = 0;
	u8 bw = 0;
	u8 gi = 0;

	if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_VHT) {
		mcs_index = min(index & 0xF, 9);

		/* 20M: bw=0, 40M: bw=1, 80M: bw=2, 160M: bw=3 */
		bw = (ht_info & 0xC) >> 2;

		/* LGI: gi =0, SGI: gi = 1 */
		gi = (ht_info & 0x10) >> 4;

		if ((index >> 4) == 1)	/* NSS = 2 */
			rate = ac_mcs_rate_nss2[2 * (3 - bw) + gi][mcs_index];
		else			/* NSS = 1 */
			rate = ac_mcs_rate_nss1[2 * (3 - bw) + gi][mcs_index];
	} else if ((ht_info & 0x3) == MWIFIEX_RATE_FORMAT_HT) {
		/* 20M: bw=0, 40M: bw=1 */
		bw = (ht_info & 0xC) >> 2;

		/* LGI: gi =0, SGI: gi = 1 */
		gi = (ht_info & 0x10) >> 4;

		if (index == MWIFIEX_RATE_BITMAP_MCS0) {
			if (gi == 1)
				rate = 0x0D;    /* MCS 32 SGI rate */
			else
				rate = 0x0C;    /* MCS 32 LGI rate */
		} else if (index < 16) {
			if ((bw == 1) || (bw == 0))
				rate = mcs_rate[2 * (1 - bw) + gi][index];
			else
				rate = mwifiex_data_rates[0];
		} else {
			rate = mwifiex_data_rates[0];
		}
	} else {
		/* 11n non-HT rates */
		if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
			index = 0;
		rate = mwifiex_data_rates[index];
	}

	return rate;
}

/* This function maps an index in supported rates table into
 * the corresponding data rate.
 */
u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv,
			       u8 index, u8 ht_info)
{
	u32 mcs_num_supp =
		(priv->adapter->user_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8;
	u32 rate;

	if (priv->adapter->is_hw_11ac_capable)
		return mwifiex_index_to_acs_data_rate(priv, index, ht_info);

	if (ht_info & BIT(0)) {
		if (index == MWIFIEX_RATE_BITMAP_MCS0) {
			if (ht_info & BIT(2))
				rate = 0x0D;	/* MCS 32 SGI rate */
			else
				rate = 0x0C;	/* MCS 32 LGI rate */
		} else if (index < mcs_num_supp) {
			if (ht_info & BIT(1)) {
				if (ht_info & BIT(2))
					/* SGI, 40M */
					rate = mcs_rate[1][index];
				else
					/* LGI, 40M */
					rate = mcs_rate[0][index];
			} else {
				if (ht_info & BIT(2))
					/* SGI, 20M */
					rate = mcs_rate[3][index];
				else
					/* LGI, 20M */
					rate = mcs_rate[2][index];
			}
		} else
			rate = mwifiex_data_rates[0];
	} else {
		if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
			index = 0;
		rate = mwifiex_data_rates[index];
	}
	return rate;
}

/*
 * This function returns the current active data rates.
 *
 * The result may vary depending upon connection status.
 */
u32 mwifiex_get_active_data_rates(struct mwifiex_private *priv, u8 *rates)
{
	if (!priv->media_connected)
		return mwifiex_get_supported_rates(priv, rates);
	else
		return mwifiex_copy_rates(rates, 0,
					  priv->curr_bss_params.data_rates,
					  priv->curr_bss_params.num_of_rates);
}

/*
 * This function locates the Channel-Frequency-Power triplet based upon
 * band and channel/frequency parameters.
 */
struct mwifiex_chan_freq_power *
mwifiex_get_cfp(struct mwifiex_private *priv, u8 band, u16 channel, u32 freq)
{
	struct mwifiex_chan_freq_power *cfp = NULL;
	struct ieee80211_supported_band *sband;
	struct ieee80211_channel *ch = NULL;
	int i;

	if (!channel && !freq)
		return cfp;

	if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG)
		sband = priv->wdev.wiphy->bands[NL80211_BAND_2GHZ];
	else
		sband = priv->wdev.wiphy->bands[NL80211_BAND_5GHZ];

	if (!sband) {
		mwifiex_dbg(priv->adapter, ERROR,
			    "%s: cannot find cfp by band %d\n",
			    __func__, band);
		return cfp;
	}

	for (i = 0; i < sband->n_channels; i++) {
		ch = &sband->channels[i];

		if (ch->flags & IEEE80211_CHAN_DISABLED)
			continue;

		if (freq) {
			if (ch->center_freq == freq)
				break;
		} else {
			/* find by valid channel*/
			if (ch->hw_value == channel ||
			    channel == FIRST_VALID_CHANNEL)
				break;
		}
	}
	if (i == sband->n_channels) {
		mwifiex_dbg(priv->adapter, ERROR,
			    "%s: cannot find cfp by band %d\t"
			    "& channel=%d freq=%d\n",
			    __func__, band, channel, freq);
	} else {
		if (!ch)
			return cfp;

		priv->cfp.channel = ch->hw_value;
		priv->cfp.freq = ch->center_freq;
		priv->cfp.max_tx_power = ch->max_power;
		cfp = &priv->cfp;
	}

	return cfp;
}

/*
 * This function checks if the data rate is set to auto.
 */
u8
mwifiex_is_rate_auto(struct mwifiex_private *priv)
{
	u32 i;
	int rate_num = 0;

	for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates); i++)
		if (priv->bitmap_rates[i])
			rate_num++;

	if (rate_num > 1)
		return true;
	else
		return false;
}

/* This function gets the supported data rates from bitmask inside
 * cfg80211_scan_request.
 */
u32 mwifiex_get_rates_from_cfg80211(struct mwifiex_private *priv,
				    u8 *rates, u8 radio_type)
{
	struct wiphy *wiphy = priv->adapter->wiphy;
	struct cfg80211_scan_request *request = priv->scan_request;
	u32 num_rates, rate_mask;
	struct ieee80211_supported_band *sband;
	int i;

	if (radio_type) {
		sband = wiphy->bands[NL80211_BAND_5GHZ];
		if (WARN_ON_ONCE(!sband))
			return 0;
		rate_mask = request->rates[NL80211_BAND_5GHZ];
	} else {
		sband = wiphy->bands[NL80211_BAND_2GHZ];
		if (WARN_ON_ONCE(!sband))
			return 0;
		rate_mask = request->rates[NL80211_BAND_2GHZ];
	}

	num_rates = 0;
	for (i = 0; i < sband->n_bitrates; i++) {
		if ((BIT(i) & rate_mask) == 0)
			continue; /* skip rate */
		rates[num_rates++] = (u8)(sband->bitrates[i].bitrate / 5);
	}

	return num_rates;
}

/* This function gets the supported data rates. The function works in
 * both Ad-Hoc and infra mode by printing the band and returning the
 * data rates.
 */
u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
{
	u32 k = 0;
	struct mwifiex_adapter *adapter = priv->adapter;

	if (priv->bss_mode == NL80211_IFTYPE_STATION ||
	    priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
		switch (adapter->config_bands) {
		case BAND_B:
			mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
				    "supported_rates_b\n",
				    adapter->config_bands);
			k = mwifiex_copy_rates(rates, k, supported_rates_b,
					       sizeof(supported_rates_b));
			break;
		case BAND_G:
		case BAND_G | BAND_GN:
			mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
				    "supported_rates_g\n",
				    adapter->config_bands);
			k = mwifiex_copy_rates(rates, k, supported_rates_g,
					       sizeof(supported_rates_g));
			break;
		case BAND_B | BAND_G:
		case BAND_A | BAND_B | BAND_G:
		case BAND_A | BAND_B:
		case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN:
		case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN | BAND_AAC:
		case BAND_B | BAND_G | BAND_GN:
			mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
				    "supported_rates_bg\n",
				    adapter->config_bands);
			k = mwifiex_copy_rates(rates, k, supported_rates_bg,
					       sizeof(supported_rates_bg));
			break;
		case BAND_A:
		case BAND_A | BAND_G:
			mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
				    "supported_rates_a\n",
				    adapter->config_bands);
			k = mwifiex_copy_rates(rates, k, supported_rates_a,
					       sizeof(supported_rates_a));
			break;
		case BAND_AN:
		case BAND_A | BAND_AN:
		case BAND_A | BAND_AN | BAND_AAC:
		case BAND_A | BAND_G | BAND_AN | BAND_GN:
		case BAND_A | BAND_G | BAND_AN | BAND_GN | BAND_AAC:
			mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
				    "supported_rates_a\n",
				    adapter->config_bands);
			k = mwifiex_copy_rates(rates, k, supported_rates_a,
					       sizeof(supported_rates_a));
			break;
		case BAND_GN:
			mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
				    "supported_rates_n\n",
				    adapter->config_bands);
			k = mwifiex_copy_rates(rates, k, supported_rates_n,
					       sizeof(supported_rates_n));
			break;
		}
	} else {
		/* Ad-hoc mode */
		switch (adapter->adhoc_start_band) {
		case BAND_B:
			mwifiex_dbg(adapter, INFO, "info: adhoc B\n");
			k = mwifiex_copy_rates(rates, k, adhoc_rates_b,
					       sizeof(adhoc_rates_b));
			break;
		case BAND_G:
		case BAND_G | BAND_GN:
			mwifiex_dbg(adapter, INFO, "info: adhoc G only\n");
			k = mwifiex_copy_rates(rates, k, adhoc_rates_g,
					       sizeof(adhoc_rates_g));
			break;
		case BAND_B | BAND_G:
		case BAND_B | BAND_G | BAND_GN:
			mwifiex_dbg(adapter, INFO, "info: adhoc BG\n");
			k = mwifiex_copy_rates(rates, k, adhoc_rates_bg,
					       sizeof(adhoc_rates_bg));
			break;
		case BAND_A:
		case BAND_A | BAND_AN:
			mwifiex_dbg(adapter, INFO, "info: adhoc A\n");
			k = mwifiex_copy_rates(rates, k, adhoc_rates_a,
					       sizeof(adhoc_rates_a));
			break;
		}
	}

	return k;
}

u8 mwifiex_adjust_data_rate(struct mwifiex_private *priv,
			    u8 rx_rate, u8 rate_info)
{
	u8 rate_index = 0;

	/* HT40 */
	if ((rate_info & BIT(0)) && (rate_info & BIT(1)))
		rate_index = MWIFIEX_RATE_INDEX_MCS0 +
			     MWIFIEX_BW20_MCS_NUM + rx_rate;
	else if (rate_info & BIT(0)) /* HT20 */
		rate_index = MWIFIEX_RATE_INDEX_MCS0 + rx_rate;
	else
		rate_index = (rx_rate > MWIFIEX_RATE_INDEX_OFDM0) ?
			      rx_rate - 1 : rx_rate;

	return rate_index;
}
Commit	Line	Data
5e6e3a92 BZ	1	/*
	2	* Marvell Wireless LAN device driver: Channel, Frequence and Power
	3	*
65da33f5	4	* Copyright (C) 2011-2014, Marvell International Ltd.
5e6e3a92 BZ	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 };
711825a0	51	static u8 supported_rates_a[A_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
5e6e3a92 BZ	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
711825a0	60	static u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 };
5e6e3a92	61
711825a0	62	static u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
5e6e3a92 BZ	63	0x30, 0x48, 0x60, 0x6c, 0 };
5e6e3a92 BZ	64
711825a0	65	static u8 supported_rates_bg[BG_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x0c,
5e6e3a92 BZ	66	0x12, 0x16, 0x18, 0x24, 0x30, 0x48,
	67	0x60, 0x6c, 0 };
	68
658cb592	69	u16 region_code_index[MWIFIEX_MAX_REGION_CODE] = { 0x00, 0x10, 0x20, 0x30,
610d0af8	70	0x31, 0x32, 0x40, 0x41, 0x50 };
5e6e3a92	71
711825a0	72	static u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 };
5e6e3a92	73
89467d8c BZ	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
9e04a7c6 AK	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 */
7cfd829c	171	{ 0x30, "FR " }, /* France */
9e04a7c6 AK	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
5e6e3a92 BZ	194	/*
	195	* This function maps an index in supported rates table into
	196	* the corresponding data rate.
	197	*/
a5f39056 YAP	198	u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv,
a5f39056 YAP	199	u8 index, u8 ht_info)
5e6e3a92	200	{
a5f39056 YAP	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	{
e3bea1c8	255	u32 mcs_num_supp =
a5333914	256	(priv->adapter->user_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8;
5e6e3a92 BZ	257	u32 rate;
5e6e3a92 BZ	258
a5f39056 YAP	259	if (priv->adapter->is_hw_11ac_capable)
	260	return mwifiex_index_to_acs_data_rate(priv, index, ht_info);
	261
5e6e3a92 BZ	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 */
e3bea1c8	268	} else if (index < mcs_num_supp) {
5e6e3a92 BZ	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
5e6e3a92 BZ	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	{
5e6e3a92	301	if (!priv->media_connected)
636c4598	302	return mwifiex_get_supported_rates(priv, rates);
5e6e3a92	303	else
636c4598	304	return mwifiex_copy_rates(rates, 0,
aea0701e YAP	305	priv->curr_bss_params.data_rates,
aea0701e YAP	306	priv->curr_bss_params.num_of_rates);
5e6e3a92 BZ	307	}
	308
	309	/*
	310	* This function locates the Channel-Frequency-Power triplet based upon
6685d109	311	* band and channel/frequency parameters.
5e6e3a92 BZ	312	*/
5e6e3a92 BZ	313	struct mwifiex_chan_freq_power *
6685d109	314	mwifiex_get_cfp(struct mwifiex_private *priv, u8 band, u16 channel, u32 freq)
5e6e3a92 BZ	315	{
	316	struct mwifiex_chan_freq_power *cfp = NULL;
	317	struct ieee80211_supported_band *sband;
6685d109	318	struct ieee80211_channel *ch = NULL;
5e6e3a92 BZ	319	int i;
5e6e3a92 BZ	320
6685d109	321	if (!channel && !freq)
5e6e3a92	322	return cfp;
5e6e3a92 BZ	323
5e6e3a92 BZ	324	if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG)
57fbcce3	325	sband = priv->wdev.wiphy->bands[NL80211_BAND_2GHZ];
5e6e3a92	326	else
57fbcce3	327	sband = priv->wdev.wiphy->bands[NL80211_BAND_5GHZ];
5e6e3a92 BZ	328
5e6e3a92 BZ	329	if (!sband) {
acebe8c1 ZL	330	mwifiex_dbg(priv->adapter, ERROR,
	331	"%s: cannot find cfp by band %d\n",
	332	__func__, band);
5e6e3a92 BZ	333	return cfp;
	334	}
	335
	336	for (i = 0; i < sband->n_channels; i++) {
	337	ch = &sband->channels[i];
6685d109 YAP	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;
5e6e3a92 BZ	350	}
5e6e3a92 BZ	351	}
6685d109	352	if (i == sband->n_channels) {
acebe8c1 ZL	353	mwifiex_dbg(priv->adapter, ERROR,
	354	"%s: cannot find cfp by band %d\t"
	355	"& channel=%d freq=%d\n",
	356	__func__, band, channel, freq);
6685d109 YAP	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	}
5e6e3a92 BZ	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
78dfca62 AP	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) {
57fbcce3	402	sband = wiphy->bands[NL80211_BAND_5GHZ];
78dfca62 AP	403	if (WARN_ON_ONCE(!sband))
78dfca62 AP	404	return 0;
57fbcce3	405	rate_mask = request->rates[NL80211_BAND_5GHZ];
78dfca62	406	} else {
57fbcce3	407	sband = wiphy->bands[NL80211_BAND_2GHZ];
78dfca62 AP	408	if (WARN_ON_ONCE(!sband))
78dfca62 AP	409	return 0;
57fbcce3	410	rate_mask = request->rates[NL80211_BAND_2GHZ];
78dfca62 AP	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.
5e6e3a92 BZ	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;
a5f39056	431
237b2ac8 AP	432	if (priv->bss_mode == NL80211_IFTYPE_STATION \|\|
237b2ac8 AP	433	priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
5e6e3a92 BZ	434	switch (adapter->config_bands) {
5e6e3a92 BZ	435	case BAND_B:
acebe8c1 ZL	436	mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
	437	"supported_rates_b\n",
	438	adapter->config_bands);
5e6e3a92 BZ	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:
acebe8c1 ZL	444	mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
	445	"supported_rates_g\n",
	446	adapter->config_bands);
5e6e3a92 BZ	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:
a5f39056	454	case BAND_A \| BAND_B \| BAND_G \| BAND_GN \| BAND_AN \| BAND_AAC:
5e6e3a92	455	case BAND_B \| BAND_G \| BAND_GN:
acebe8c1 ZL	456	mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
	457	"supported_rates_bg\n",
	458	adapter->config_bands);
5e6e3a92 BZ	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:
acebe8c1 ZL	464	mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
	465	"supported_rates_a\n",
	466	adapter->config_bands);
5e6e3a92 BZ	467	k = mwifiex_copy_rates(rates, k, supported_rates_a,
	468	sizeof(supported_rates_a));
	469	break;
a5f39056	470	case BAND_AN:
5e6e3a92	471	case BAND_A \| BAND_AN:
a5f39056	472	case BAND_A \| BAND_AN \| BAND_AAC:
5e6e3a92	473	case BAND_A \| BAND_G \| BAND_AN \| BAND_GN:
a5f39056	474	case BAND_A \| BAND_G \| BAND_AN \| BAND_GN \| BAND_AAC:
acebe8c1 ZL	475	mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
	476	"supported_rates_a\n",
	477	adapter->config_bands);
5e6e3a92 BZ	478	k = mwifiex_copy_rates(rates, k, supported_rates_a,
	479	sizeof(supported_rates_a));
	480	break;
	481	case BAND_GN:
acebe8c1 ZL	482	mwifiex_dbg(adapter, INFO, "info: infra band=%d\t"
	483	"supported_rates_n\n",
	484	adapter->config_bands);
5e6e3a92 BZ	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:
acebe8c1	493	mwifiex_dbg(adapter, INFO, "info: adhoc B\n");
5e6e3a92 BZ	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:
acebe8c1	499	mwifiex_dbg(adapter, INFO, "info: adhoc G only\n");
5e6e3a92 BZ	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:
acebe8c1	505	mwifiex_dbg(adapter, INFO, "info: adhoc BG\n");
5e6e3a92 BZ	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:
acebe8c1	511	mwifiex_dbg(adapter, INFO, "info: adhoc A\n");
5e6e3a92 BZ	512	k = mwifiex_copy_rates(rates, k, adhoc_rates_a,
	513	sizeof(adhoc_rates_a));
	514	break;
	515	}
	516	}
	517
	518	return k;
	519	}
cbf6e055 XH	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	}