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-rw-r--r--drivers/net/wireless/mwifiex/cfp.c367
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/cfp.c b/drivers/net/wireless/mwifiex/cfp.c
new file mode 100644
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+++ b/drivers/net/wireless/mwifiex/cfp.c
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+/*
+ * 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(struct mwifiex_adapter *adapter, 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(struct mwifiex_adapter *adapter, 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)
+{
+ u32 k;
+
+ if (!priv->media_connected)
+ k = mwifiex_get_supported_rates(priv, rates);
+ else
+ k = mwifiex_copy_rates(rates, 0,
+ priv->curr_bss_params.data_rates,
+ priv->curr_bss_params.num_of_rates);
+
+ return k;
+}
+
+/*
+ * 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(struct mwifiex_adapter *adapter, 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;
+}
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