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Release 4.11 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; }

Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao6198.39%150.00%
Yogesh Ashok Powar11.61%150.00%
Total62100.00%2100.00%

/* * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Yogesh Ashok Powar25894.51%150.00%
Bing Zhao155.49%150.00%
Total273100.00%2100.00%

/* 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; }

Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao19291.00%250.00%
Yogesh Ashok Powar188.53%125.00%
Amitkumar Karwar10.47%125.00%
Total211100.00%4100.00%

/* * 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); }

Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao4794.00%150.00%
Yogesh Ashok Powar36.00%150.00%
Total50100.00%2100.00%

/* * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao20176.14%120.00%
Yogesh Ashok Powar5219.70%120.00%
Zhaoyang Liu72.65%120.00%
Avinash Patil20.76%120.00%
Johannes Berg20.76%120.00%
Total264100.00%5100.00%

/* * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao61100.00%1100.00%
Total61100.00%1100.00%

/* 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; }

Contributors

PersonTokensPropCommitsCommitProp
Avinash Patil17497.75%150.00%
Johannes Berg42.25%150.00%
Total178100.00%2100.00%

/* 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; }

Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao41784.58%240.00%
Zhaoyang Liu367.30%120.00%
Yogesh Ashok Powar346.90%120.00%
Avinash Patil61.22%120.00%
Total493100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Xinming Hu85100.00%1100.00%
Total85100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Bing Zhao145453.99%421.05%
Yogesh Ashok Powar90733.68%315.79%
Avinash Patil1846.83%315.79%
Xinming Hu863.19%210.53%
Zhaoyang Liu431.60%15.26%
Amitkumar Karwar130.48%526.32%
Johannes Berg60.22%15.26%
Total2693100.00%19100.00%
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