2 * Marvell Wireless LAN device driver: Channel, Frequence and Power
4 * Copyright (C) 2011, Marvell International Ltd.
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.
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.
28 #define MWIFIEX_TX_PWR_DEFAULT 20
30 #define MWIFIEX_TX_PWR_US_DEFAULT 20
32 #define MWIFIEX_TX_PWR_JP_DEFAULT 16
34 #define MWIFIEX_TX_PWR_FR_100MW 20
36 #define MWIFIEX_TX_PWR_FR_10MW 10
38 #define MWIFIEX_TX_PWR_EMEA_DEFAULT 20
40 static u8 adhoc_rates_b[B_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0 };
42 static u8 adhoc_rates_g[G_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
43 0xb0, 0x48, 0x60, 0x6c, 0 };
45 static u8 adhoc_rates_bg[BG_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96,
46 0x0c, 0x12, 0x18, 0x24,
47 0x30, 0x48, 0x60, 0x6c, 0 };
49 static u8 adhoc_rates_a[A_SUPPORTED_RATES] = { 0x8c, 0x12, 0x98, 0x24,
50 0xb0, 0x48, 0x60, 0x6c, 0 };
51 u8 supported_rates_a[A_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
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 };
60 u8 supported_rates_b[B_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0 };
62 u8 supported_rates_g[G_SUPPORTED_RATES] = { 0x0c, 0x12, 0x18, 0x24,
63 0x30, 0x48, 0x60, 0x6c, 0 };
65 u8 supported_rates_bg[BG_SUPPORTED_RATES] = { 0x02, 0x04, 0x0b, 0x0c,
66 0x12, 0x16, 0x18, 0x24, 0x30, 0x48,
69 u16 region_code_index[MWIFIEX_MAX_REGION_CODE] = { 0x10, 0x20, 0x30,
70 0x32, 0x40, 0x41, 0xff };
72 u8 supported_rates_n[N_SUPPORTED_RATES] = { 0x02, 0x04, 0 };
75 * This function maps an index in supported rates table into
76 * the corresponding data rate.
78 u32 mwifiex_index_to_data_rate(struct mwifiex_adapter *adapter, u8 index,
81 u16 mcs_rate[4][8] = {
82 {0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e}
84 {0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c}
86 {0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82}
88 {0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90}
93 if (ht_info & BIT(0)) {
94 if (index == MWIFIEX_RATE_BITMAP_MCS0) {
96 rate = 0x0D; /* MCS 32 SGI rate */
98 rate = 0x0C; /* MCS 32 LGI rate */
99 } else if (index < 8) {
100 if (ht_info & BIT(1)) {
101 if (ht_info & BIT(2))
103 rate = mcs_rate[1][index];
106 rate = mcs_rate[0][index];
108 if (ht_info & BIT(2))
110 rate = mcs_rate[3][index];
113 rate = mcs_rate[2][index];
116 rate = mwifiex_data_rates[0];
118 if (index >= MWIFIEX_SUPPORTED_RATES_EXT)
120 rate = mwifiex_data_rates[index];
126 * This function maps a data rate value into corresponding index in supported
129 u8 mwifiex_data_rate_to_index(struct mwifiex_adapter *adapter, u32 rate)
134 ptr = memchr(mwifiex_data_rates, rate,
135 sizeof(mwifiex_data_rates));
137 return (u8) (ptr - mwifiex_data_rates);
143 * This function returns the current active data rates.
145 * The result may vary depending upon connection status.
147 u32 mwifiex_get_active_data_rates(struct mwifiex_private *priv, u8 *rates)
151 if (!priv->media_connected)
152 k = mwifiex_get_supported_rates(priv, rates);
154 k = mwifiex_copy_rates(rates, 0,
155 priv->curr_bss_params.data_rates,
156 priv->curr_bss_params.num_of_rates);
162 * This function locates the Channel-Frequency-Power triplet based upon
163 * band and channel parameters.
165 struct mwifiex_chan_freq_power *
166 mwifiex_get_cfp_by_band_and_channel_from_cfg80211(struct mwifiex_private
167 *priv, u8 band, u16 channel)
169 struct mwifiex_chan_freq_power *cfp = NULL;
170 struct ieee80211_supported_band *sband;
171 struct ieee80211_channel *ch;
174 if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG)
175 sband = priv->wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
177 sband = priv->wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
180 dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d"
181 " & channel %d\n", __func__, band, channel);
185 for (i = 0; i < sband->n_channels; i++) {
186 ch = &sband->channels[i];
187 if (((ch->hw_value == channel) ||
188 (channel == FIRST_VALID_CHANNEL))
189 && !(ch->flags & IEEE80211_CHAN_DISABLED)) {
190 priv->cfp.channel = channel;
191 priv->cfp.freq = ch->center_freq;
192 priv->cfp.max_tx_power = ch->max_power;
197 if (i == sband->n_channels)
198 dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d"
199 " & channel %d\n", __func__, band, channel);
205 * This function locates the Channel-Frequency-Power triplet based upon
206 * band and frequency parameters.
208 struct mwifiex_chan_freq_power *
209 mwifiex_get_cfp_by_band_and_freq_from_cfg80211(struct mwifiex_private *priv,
212 struct mwifiex_chan_freq_power *cfp = NULL;
213 struct ieee80211_supported_band *sband;
214 struct ieee80211_channel *ch;
217 if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG)
218 sband = priv->wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
220 sband = priv->wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
223 dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d"
224 " & freq %d\n", __func__, band, freq);
228 for (i = 0; i < sband->n_channels; i++) {
229 ch = &sband->channels[i];
230 if ((ch->center_freq == freq) &&
231 !(ch->flags & IEEE80211_CHAN_DISABLED)) {
232 priv->cfp.channel = ch->hw_value;
233 priv->cfp.freq = freq;
234 priv->cfp.max_tx_power = ch->max_power;
239 if (i == sband->n_channels)
240 dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d"
241 " & freq %d\n", __func__, band, freq);
247 * This function checks if the data rate is set to auto.
250 mwifiex_is_rate_auto(struct mwifiex_private *priv)
255 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates); i++)
256 if (priv->bitmap_rates[i])
266 * This function converts rate bitmap into rate index.
269 mwifiex_get_rate_index(struct mwifiex_adapter *adapter, u16 *rate_bitmap,
274 for (i = 0; i < size * 8; i++)
275 if (rate_bitmap[i / 16] & (1 << (i % 16)))
282 * This function gets the supported data rates.
284 * The function works in both Ad-Hoc and infra mode by printing the
285 * band and returning the data rates.
287 u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates)
290 struct mwifiex_adapter *adapter = priv->adapter;
291 if (priv->bss_mode == MWIFIEX_BSS_MODE_INFRA) {
293 switch (adapter->config_bands) {
295 dev_dbg(adapter->dev, "info: infra band=%d "
296 "supported_rates_b\n", adapter->config_bands);
297 k = mwifiex_copy_rates(rates, k, supported_rates_b,
298 sizeof(supported_rates_b));
301 case BAND_G | BAND_GN:
302 dev_dbg(adapter->dev, "info: infra band=%d "
303 "supported_rates_g\n", adapter->config_bands);
304 k = mwifiex_copy_rates(rates, k, supported_rates_g,
305 sizeof(supported_rates_g));
307 case BAND_B | BAND_G:
308 case BAND_A | BAND_B | BAND_G:
309 case BAND_A | BAND_B:
310 case BAND_A | BAND_B | BAND_G | BAND_GN | BAND_AN:
311 case BAND_B | BAND_G | BAND_GN:
312 dev_dbg(adapter->dev, "info: infra band=%d "
313 "supported_rates_bg\n", adapter->config_bands);
314 k = mwifiex_copy_rates(rates, k, supported_rates_bg,
315 sizeof(supported_rates_bg));
318 case BAND_A | BAND_G:
319 dev_dbg(adapter->dev, "info: infra band=%d "
320 "supported_rates_a\n", adapter->config_bands);
321 k = mwifiex_copy_rates(rates, k, supported_rates_a,
322 sizeof(supported_rates_a));
324 case BAND_A | BAND_AN:
325 case BAND_A | BAND_G | BAND_AN | BAND_GN:
326 dev_dbg(adapter->dev, "info: infra band=%d "
327 "supported_rates_a\n", adapter->config_bands);
328 k = mwifiex_copy_rates(rates, k, supported_rates_a,
329 sizeof(supported_rates_a));
332 dev_dbg(adapter->dev, "info: infra band=%d "
333 "supported_rates_n\n", adapter->config_bands);
334 k = mwifiex_copy_rates(rates, k, supported_rates_n,
335 sizeof(supported_rates_n));
340 switch (adapter->adhoc_start_band) {
342 dev_dbg(adapter->dev, "info: adhoc B\n");
343 k = mwifiex_copy_rates(rates, k, adhoc_rates_b,
344 sizeof(adhoc_rates_b));
347 case BAND_G | BAND_GN:
348 dev_dbg(adapter->dev, "info: adhoc G only\n");
349 k = mwifiex_copy_rates(rates, k, adhoc_rates_g,
350 sizeof(adhoc_rates_g));
352 case BAND_B | BAND_G:
353 case BAND_B | BAND_G | BAND_GN:
354 dev_dbg(adapter->dev, "info: adhoc BG\n");
355 k = mwifiex_copy_rates(rates, k, adhoc_rates_bg,
356 sizeof(adhoc_rates_bg));
359 case BAND_A | BAND_AN:
360 dev_dbg(adapter->dev, "info: adhoc A\n");
361 k = mwifiex_copy_rates(rates, k, adhoc_rates_a,
362 sizeof(adhoc_rates_a));