diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/cfp.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/cfp.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/cfp.c b/drivers/net/wireless/mwifiex/cfp.c new file mode 100644 index 000000000000..d0cada5a29a0 --- /dev/null +++ b/drivers/net/wireless/mwifiex/cfp.c @@ -0,0 +1,360 @@ +/* + * Marvell Wireless LAN device driver: Channel, Frequence and Power + * + * Copyright (C) 2011, 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 }; +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 }; + +u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 }; + +u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24, + 0x30, 0x48, 0x60, 0x6c, 0 }; + +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] = { 0x10, 0x20, 0x30, + 0x32, 0x40, 0x41, 0xff }; + +u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 }; + +/* + * This function maps an index in supported rates table into + * the corresponding data rate. + */ +u32 mwifiex_index_to_data_rate(u8 index, u8 ht_info) +{ + u16 mcs_rate[4][8] = { + {0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e} + , /* LG 40M */ + {0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c} + , /* SG 40M */ + {0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82} + , /* LG 20M */ + {0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90} + }; /* SG 20M */ + + u32 rate; + + 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 < 8) { + 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 maps a data rate value into corresponding index in supported + * rates table. + */ +u8 mwifiex_data_rate_to_index(u32 rate) +{ + u16 *ptr; + + if (rate) { + ptr = memchr(mwifiex_data_rates, rate, + sizeof(mwifiex_data_rates)); + if (ptr) + return (u8) (ptr - mwifiex_data_rates); + } + return 0; +} + +/* + * 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 parameters. + */ +struct mwifiex_chan_freq_power * +mwifiex_get_cfp_by_band_and_channel_from_cfg80211(struct mwifiex_private + *priv, u8 band, u16 channel) +{ + struct mwifiex_chan_freq_power *cfp = NULL; + struct ieee80211_supported_band *sband; + struct ieee80211_channel *ch; + int i; + + if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG) + sband = priv->wdev->wiphy->bands[IEEE80211_BAND_2GHZ]; + else + sband = priv->wdev->wiphy->bands[IEEE80211_BAND_5GHZ]; + + if (!sband) { + dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d" + " & channel %d\n", __func__, band, channel); + return cfp; + } + + for (i = 0; i < sband->n_channels; i++) { + ch = &sband->channels[i]; + if (((ch->hw_value == channel) || + (channel == FIRST_VALID_CHANNEL)) + && !(ch->flags & IEEE80211_CHAN_DISABLED)) { + priv->cfp.channel = channel; + priv->cfp.freq = ch->center_freq; + priv->cfp.max_tx_power = ch->max_power; + cfp = &priv->cfp; + break; + } + } + if (i == sband->n_channels) + dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d" + " & channel %d\n", __func__, band, channel); + + return cfp; +} + +/* + * This function locates the Channel-Frequency-Power triplet based upon + * band and frequency parameters. + */ +struct mwifiex_chan_freq_power * +mwifiex_get_cfp_by_band_and_freq_from_cfg80211(struct mwifiex_private *priv, + u8 band, u32 freq) +{ + struct mwifiex_chan_freq_power *cfp = NULL; + struct ieee80211_supported_band *sband; + struct ieee80211_channel *ch; + int i; + + if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG) + sband = priv->wdev->wiphy->bands[IEEE80211_BAND_2GHZ]; + else + sband = priv->wdev->wiphy->bands[IEEE80211_BAND_5GHZ]; + + if (!sband) { + dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d" + " & freq %d\n", __func__, band, freq); + return cfp; + } + + for (i = 0; i < sband->n_channels; i++) { + ch = &sband->channels[i]; + if ((ch->center_freq == freq) && + !(ch->flags & IEEE80211_CHAN_DISABLED)) { + priv->cfp.channel = ch->hw_value; + priv->cfp.freq = freq; + priv->cfp.max_tx_power = ch->max_power; + cfp = &priv->cfp; + break; + } + } + if (i == sband->n_channels) + dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d" + " & freq %d\n", __func__, band, freq); + + 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 converts rate bitmap into rate index. + */ +int mwifiex_get_rate_index(u16 *rate_bitmap, int size) +{ + int i; + + for (i = 0; i < size * 8; i++) + if (rate_bitmap[i / 16] & (1 << (i % 16))) + return i; + + return 0; +} + +/* + * 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) { + switch (adapter->config_bands) { + case BAND_B: + dev_dbg(adapter->dev, "info: infra band=%d " + "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: + dev_dbg(adapter->dev, "info: infra band=%d " + "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_B | BAND_G | BAND_GN: + dev_dbg(adapter->dev, "info: infra band=%d " + "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: + dev_dbg(adapter->dev, "info: infra band=%d " + "supported_rates_a\n", adapter->config_bands); + k = mwifiex_copy_rates(rates, k, supported_rates_a, + sizeof(supported_rates_a)); + break; + case BAND_A | BAND_AN: + case BAND_A | BAND_G | BAND_AN | BAND_GN: + dev_dbg(adapter->dev, "info: infra band=%d " + "supported_rates_a\n", adapter->config_bands); + k = mwifiex_copy_rates(rates, k, supported_rates_a, + sizeof(supported_rates_a)); + break; + case BAND_GN: + dev_dbg(adapter->dev, "info: infra band=%d " + "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: + dev_dbg(adapter->dev, "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: + dev_dbg(adapter->dev, "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: + dev_dbg(adapter->dev, "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: + dev_dbg(adapter->dev, "info: adhoc A\n"); + k = mwifiex_copy_rates(rates, k, adhoc_rates_a, + sizeof(adhoc_rates_a)); + break; + } + } + + return k; +} |