| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * NXP Wireless LAN device driver: Channel, Frequence and Power |
| * |
| * Copyright 2011-2020 NXP |
| */ |
| |
| #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; |
| |
| /* Look for code in mapping table */ |
| for (i = 0; i < ARRAY_SIZE(region_code_mapping_t); 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, WARN, |
| "%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; |
| |
| if (rate_index >= MWIFIEX_MAX_AC_RX_RATES) |
| rate_index = MWIFIEX_MAX_AC_RX_RATES - 1; |
| |
| return rate_index; |
| } |
