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771 lines
20 KiB
771 lines
20 KiB
/* |
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* Copyright (c) 2010 Broadcom Corporation |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <linux/types.h> |
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#include <net/cfg80211.h> |
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#include <net/mac80211.h> |
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#include <net/regulatory.h> |
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#include <defs.h> |
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#include "pub.h" |
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#include "phy/phy_hal.h" |
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#include "main.h" |
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#include "stf.h" |
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#include "channel.h" |
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#include "mac80211_if.h" |
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#include "debug.h" |
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/* QDB() macro takes a dB value and converts to a quarter dB value */ |
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#define QDB(n) ((n) * BRCMS_TXPWR_DB_FACTOR) |
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#define LOCALE_MIMO_IDX_bn 0 |
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#define LOCALE_MIMO_IDX_11n 0 |
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/* max of BAND_5G_PWR_LVLS and 14 for 2.4 GHz */ |
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#define BRCMS_MAXPWR_MIMO_TBL_SIZE 14 |
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/* maxpwr mapping to 5GHz band channels: |
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* maxpwr[0] - channels [34-48] |
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* maxpwr[1] - channels [52-60] |
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* maxpwr[2] - channels [62-64] |
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* maxpwr[3] - channels [100-140] |
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* maxpwr[4] - channels [149-165] |
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*/ |
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#define BAND_5G_PWR_LVLS 5 /* 5 power levels for 5G */ |
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#define LC(id) LOCALE_MIMO_IDX_ ## id |
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#define LOCALES(mimo2, mimo5) \ |
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{LC(mimo2), LC(mimo5)} |
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/* macro to get 5 GHz channel group index for tx power */ |
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#define CHANNEL_POWER_IDX_5G(c) (((c) < 52) ? 0 : \ |
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(((c) < 62) ? 1 : \ |
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(((c) < 100) ? 2 : \ |
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(((c) < 149) ? 3 : 4)))) |
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#define BRCM_2GHZ_2412_2462 REG_RULE(2412-10, 2462+10, 40, 0, 19, 0) |
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#define BRCM_2GHZ_2467_2472 REG_RULE(2467-10, 2472+10, 20, 0, 19, \ |
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NL80211_RRF_NO_IR) |
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#define BRCM_5GHZ_5180_5240 REG_RULE(5180-10, 5240+10, 40, 0, 21, \ |
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NL80211_RRF_NO_IR) |
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#define BRCM_5GHZ_5260_5320 REG_RULE(5260-10, 5320+10, 40, 0, 21, \ |
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NL80211_RRF_DFS | \ |
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NL80211_RRF_NO_IR) |
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#define BRCM_5GHZ_5500_5700 REG_RULE(5500-10, 5700+10, 40, 0, 21, \ |
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NL80211_RRF_DFS | \ |
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NL80211_RRF_NO_IR) |
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#define BRCM_5GHZ_5745_5825 REG_RULE(5745-10, 5825+10, 40, 0, 21, \ |
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NL80211_RRF_NO_IR) |
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static const struct ieee80211_regdomain brcms_regdom_x2 = { |
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.n_reg_rules = 6, |
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.alpha2 = "X2", |
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.reg_rules = { |
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BRCM_2GHZ_2412_2462, |
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BRCM_2GHZ_2467_2472, |
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BRCM_5GHZ_5180_5240, |
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BRCM_5GHZ_5260_5320, |
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BRCM_5GHZ_5500_5700, |
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BRCM_5GHZ_5745_5825, |
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} |
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}; |
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/* locale per-channel tx power limits for MIMO frames |
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* maxpwr arrays are index by channel for 2.4 GHz limits, and |
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* by sub-band for 5 GHz limits using CHANNEL_POWER_IDX_5G(channel) |
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*/ |
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struct locale_mimo_info { |
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/* tx 20 MHz power limits, qdBm units */ |
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s8 maxpwr20[BRCMS_MAXPWR_MIMO_TBL_SIZE]; |
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/* tx 40 MHz power limits, qdBm units */ |
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s8 maxpwr40[BRCMS_MAXPWR_MIMO_TBL_SIZE]; |
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}; |
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/* Country names and abbreviations with locale defined from ISO 3166 */ |
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struct country_info { |
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const u8 locale_mimo_2G; /* 2.4G mimo info */ |
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const u8 locale_mimo_5G; /* 5G mimo info */ |
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}; |
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struct brcms_regd { |
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struct country_info country; |
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const struct ieee80211_regdomain *regdomain; |
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}; |
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struct brcms_cm_info { |
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struct brcms_pub *pub; |
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struct brcms_c_info *wlc; |
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const struct brcms_regd *world_regd; |
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}; |
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/* |
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* MIMO Locale Definitions - 2.4 GHz |
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*/ |
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static const struct locale_mimo_info locale_bn = { |
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{QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), |
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QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), |
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QDB(13), QDB(13), QDB(13)}, |
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{0, 0, QDB(13), QDB(13), QDB(13), |
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QDB(13), QDB(13), QDB(13), QDB(13), QDB(13), |
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QDB(13), 0, 0}, |
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}; |
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static const struct locale_mimo_info *g_mimo_2g_table[] = { |
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&locale_bn |
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}; |
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/* |
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* MIMO Locale Definitions - 5 GHz |
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*/ |
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static const struct locale_mimo_info locale_11n = { |
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{ /* 12.5 dBm */ 50, 50, 50, QDB(15), QDB(15)}, |
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{QDB(14), QDB(15), QDB(15), QDB(15), QDB(15)}, |
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}; |
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static const struct locale_mimo_info *g_mimo_5g_table[] = { |
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&locale_11n |
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}; |
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static const struct brcms_regd cntry_locales[] = { |
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/* Worldwide RoW 2, must always be at index 0 */ |
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{ |
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.country = LOCALES(bn, 11n), |
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.regdomain = &brcms_regdom_x2, |
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}, |
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}; |
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static const struct locale_mimo_info *brcms_c_get_mimo_2g(u8 locale_idx) |
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{ |
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if (locale_idx >= ARRAY_SIZE(g_mimo_2g_table)) |
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return NULL; |
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return g_mimo_2g_table[locale_idx]; |
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} |
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static const struct locale_mimo_info *brcms_c_get_mimo_5g(u8 locale_idx) |
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{ |
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if (locale_idx >= ARRAY_SIZE(g_mimo_5g_table)) |
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return NULL; |
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return g_mimo_5g_table[locale_idx]; |
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} |
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/* |
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* Indicates whether the country provided is valid to pass |
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* to cfg80211 or not. |
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* |
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* returns true if valid; false if not. |
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*/ |
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static bool brcms_c_country_valid(const char *ccode) |
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{ |
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/* |
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* only allow ascii alpha uppercase for the first 2 |
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* chars. |
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*/ |
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if (!((ccode[0] & 0x80) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A && |
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(ccode[1] & 0x80) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A)) |
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return false; |
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/* |
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* do not match ISO 3166-1 user assigned country codes |
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* that may be in the driver table |
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*/ |
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if (!strcmp("AA", ccode) || /* AA */ |
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!strcmp("ZZ", ccode) || /* ZZ */ |
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ccode[0] == 'X' || /* XA - XZ */ |
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(ccode[0] == 'Q' && /* QM - QZ */ |
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(ccode[1] >= 'M' && ccode[1] <= 'Z'))) |
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return false; |
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if (!strcmp("NA", ccode)) |
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return false; |
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return true; |
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} |
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static const struct brcms_regd *brcms_world_regd(const char *regdom, int len) |
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{ |
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const struct brcms_regd *regd = NULL; |
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int i; |
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for (i = 0; i < ARRAY_SIZE(cntry_locales); i++) { |
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if (!strncmp(regdom, cntry_locales[i].regdomain->alpha2, len)) { |
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regd = &cntry_locales[i]; |
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break; |
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} |
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} |
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return regd; |
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} |
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static const struct brcms_regd *brcms_default_world_regd(void) |
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{ |
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return &cntry_locales[0]; |
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} |
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/* JP, J1 - J10 are Japan ccodes */ |
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static bool brcms_c_japan_ccode(const char *ccode) |
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{ |
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return (ccode[0] == 'J' && |
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(ccode[1] == 'P' || (ccode[1] >= '1' && ccode[1] <= '9'))); |
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} |
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static void |
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brcms_c_channel_min_txpower_limits_with_local_constraint( |
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struct brcms_cm_info *wlc_cm, struct txpwr_limits *txpwr, |
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u8 local_constraint_qdbm) |
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{ |
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int j; |
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/* CCK Rates */ |
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for (j = 0; j < WL_TX_POWER_CCK_NUM; j++) |
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txpwr->cck[j] = min(txpwr->cck[j], local_constraint_qdbm); |
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/* 20 MHz Legacy OFDM SISO */ |
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for (j = 0; j < WL_TX_POWER_OFDM_NUM; j++) |
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txpwr->ofdm[j] = min(txpwr->ofdm[j], local_constraint_qdbm); |
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/* 20 MHz Legacy OFDM CDD */ |
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for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) |
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txpwr->ofdm_cdd[j] = |
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min(txpwr->ofdm_cdd[j], local_constraint_qdbm); |
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/* 40 MHz Legacy OFDM SISO */ |
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for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) |
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txpwr->ofdm_40_siso[j] = |
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min(txpwr->ofdm_40_siso[j], local_constraint_qdbm); |
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/* 40 MHz Legacy OFDM CDD */ |
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for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++) |
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txpwr->ofdm_40_cdd[j] = |
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min(txpwr->ofdm_40_cdd[j], local_constraint_qdbm); |
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/* 20MHz MCS 0-7 SISO */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) |
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txpwr->mcs_20_siso[j] = |
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min(txpwr->mcs_20_siso[j], local_constraint_qdbm); |
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/* 20MHz MCS 0-7 CDD */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) |
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txpwr->mcs_20_cdd[j] = |
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min(txpwr->mcs_20_cdd[j], local_constraint_qdbm); |
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/* 20MHz MCS 0-7 STBC */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) |
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txpwr->mcs_20_stbc[j] = |
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min(txpwr->mcs_20_stbc[j], local_constraint_qdbm); |
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/* 20MHz MCS 8-15 MIMO */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++) |
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txpwr->mcs_20_mimo[j] = |
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min(txpwr->mcs_20_mimo[j], local_constraint_qdbm); |
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/* 40MHz MCS 0-7 SISO */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) |
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txpwr->mcs_40_siso[j] = |
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min(txpwr->mcs_40_siso[j], local_constraint_qdbm); |
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/* 40MHz MCS 0-7 CDD */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) |
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txpwr->mcs_40_cdd[j] = |
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min(txpwr->mcs_40_cdd[j], local_constraint_qdbm); |
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/* 40MHz MCS 0-7 STBC */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++) |
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txpwr->mcs_40_stbc[j] = |
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min(txpwr->mcs_40_stbc[j], local_constraint_qdbm); |
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/* 40MHz MCS 8-15 MIMO */ |
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for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++) |
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txpwr->mcs_40_mimo[j] = |
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min(txpwr->mcs_40_mimo[j], local_constraint_qdbm); |
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/* 40MHz MCS 32 */ |
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txpwr->mcs32 = min(txpwr->mcs32, local_constraint_qdbm); |
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} |
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/* |
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* set the driver's current country and regulatory information |
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* using a country code as the source. Look up built in country |
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* information found with the country code. |
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*/ |
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static void |
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brcms_c_set_country(struct brcms_cm_info *wlc_cm, |
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const struct brcms_regd *regd) |
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{ |
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struct brcms_c_info *wlc = wlc_cm->wlc; |
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if ((wlc->pub->_n_enab & SUPPORT_11N) != |
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wlc->protection->nmode_user) |
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brcms_c_set_nmode(wlc); |
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brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); |
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brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); |
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brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false); |
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return; |
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} |
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struct brcms_cm_info *brcms_c_channel_mgr_attach(struct brcms_c_info *wlc) |
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{ |
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struct brcms_cm_info *wlc_cm; |
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struct brcms_pub *pub = wlc->pub; |
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struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom; |
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const char *ccode = sprom->alpha2; |
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int ccode_len = sizeof(sprom->alpha2); |
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wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC); |
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if (wlc_cm == NULL) |
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return NULL; |
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wlc_cm->pub = pub; |
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wlc_cm->wlc = wlc; |
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wlc->cmi = wlc_cm; |
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/* store the country code for passing up as a regulatory hint */ |
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wlc_cm->world_regd = brcms_world_regd(ccode, ccode_len); |
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if (brcms_c_country_valid(ccode)) |
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strncpy(wlc->pub->srom_ccode, ccode, ccode_len); |
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/* |
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* If no custom world domain is found in the SROM, use the |
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* default "X2" domain. |
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*/ |
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if (!wlc_cm->world_regd) { |
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wlc_cm->world_regd = brcms_default_world_regd(); |
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ccode = wlc_cm->world_regd->regdomain->alpha2; |
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ccode_len = BRCM_CNTRY_BUF_SZ - 1; |
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} |
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/* save default country for exiting 11d regulatory mode */ |
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strncpy(wlc->country_default, ccode, ccode_len); |
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/* initialize autocountry_default to driver default */ |
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strncpy(wlc->autocountry_default, ccode, ccode_len); |
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brcms_c_set_country(wlc_cm, wlc_cm->world_regd); |
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return wlc_cm; |
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} |
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void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm) |
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{ |
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kfree(wlc_cm); |
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} |
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void |
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brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec, |
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u8 local_constraint_qdbm) |
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{ |
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struct brcms_c_info *wlc = wlc_cm->wlc; |
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struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan; |
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struct txpwr_limits txpwr; |
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brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr); |
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brcms_c_channel_min_txpower_limits_with_local_constraint( |
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wlc_cm, &txpwr, local_constraint_qdbm |
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); |
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/* set or restore gmode as required by regulatory */ |
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if (ch->flags & IEEE80211_CHAN_NO_OFDM) |
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brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false); |
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else |
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brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false); |
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brcms_b_set_chanspec(wlc->hw, chanspec, |
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!!(ch->flags & IEEE80211_CHAN_NO_IR), |
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&txpwr); |
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} |
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void |
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brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec, |
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struct txpwr_limits *txpwr) |
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{ |
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struct brcms_c_info *wlc = wlc_cm->wlc; |
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struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan; |
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uint i; |
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uint chan; |
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int maxpwr; |
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int delta; |
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const struct country_info *country; |
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struct brcms_band *band; |
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int conducted_max = BRCMS_TXPWR_MAX; |
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const struct locale_mimo_info *li_mimo; |
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int maxpwr20, maxpwr40; |
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int maxpwr_idx; |
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uint j; |
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memset(txpwr, 0, sizeof(struct txpwr_limits)); |
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if (WARN_ON(!ch)) |
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return; |
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country = &wlc_cm->world_regd->country; |
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chan = CHSPEC_CHANNEL(chanspec); |
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band = wlc->bandstate[chspec_bandunit(chanspec)]; |
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li_mimo = (band->bandtype == BRCM_BAND_5G) ? |
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brcms_c_get_mimo_5g(country->locale_mimo_5G) : |
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brcms_c_get_mimo_2g(country->locale_mimo_2G); |
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delta = band->antgain; |
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if (band->bandtype == BRCM_BAND_2G) |
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conducted_max = QDB(22); |
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maxpwr = QDB(ch->max_power) - delta; |
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maxpwr = max(maxpwr, 0); |
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maxpwr = min(maxpwr, conducted_max); |
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/* CCK txpwr limits for 2.4G band */ |
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if (band->bandtype == BRCM_BAND_2G) { |
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for (i = 0; i < BRCMS_NUM_RATES_CCK; i++) |
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txpwr->cck[i] = (u8) maxpwr; |
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} |
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for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) { |
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txpwr->ofdm[i] = (u8) maxpwr; |
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|
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/* |
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* OFDM 40 MHz SISO has the same power as the corresponding |
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* MCS0-7 rate unless overriden by the locale specific code. |
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* We set this value to 0 as a flag (presumably 0 dBm isn't |
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* a possibility) and then copy the MCS0-7 value to the 40 MHz |
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* value if it wasn't explicitly set. |
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*/ |
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txpwr->ofdm_40_siso[i] = 0; |
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txpwr->ofdm_cdd[i] = (u8) maxpwr; |
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txpwr->ofdm_40_cdd[i] = 0; |
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} |
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delta = 0; |
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if (band->antgain > QDB(6)) |
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delta = band->antgain - QDB(6); /* Excess over 6 dB */ |
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if (band->bandtype == BRCM_BAND_2G) |
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maxpwr_idx = (chan - 1); |
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else |
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maxpwr_idx = CHANNEL_POWER_IDX_5G(chan); |
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maxpwr20 = li_mimo->maxpwr20[maxpwr_idx]; |
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maxpwr40 = li_mimo->maxpwr40[maxpwr_idx]; |
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maxpwr20 = maxpwr20 - delta; |
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maxpwr20 = max(maxpwr20, 0); |
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maxpwr40 = maxpwr40 - delta; |
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maxpwr40 = max(maxpwr40, 0); |
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|
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/* Fill in the MCS 0-7 (SISO) rates */ |
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for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { |
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|
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/* |
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* 20 MHz has the same power as the corresponding OFDM rate |
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* unless overriden by the locale specific code. |
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*/ |
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txpwr->mcs_20_siso[i] = txpwr->ofdm[i]; |
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txpwr->mcs_40_siso[i] = 0; |
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} |
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|
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/* Fill in the MCS 0-7 CDD rates */ |
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for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { |
|
txpwr->mcs_20_cdd[i] = (u8) maxpwr20; |
|
txpwr->mcs_40_cdd[i] = (u8) maxpwr40; |
|
} |
|
|
|
/* |
|
* These locales have SISO expressed in the |
|
* table and override CDD later |
|
*/ |
|
if (li_mimo == &locale_bn) { |
|
maxpwr20 = QDB(16); |
|
maxpwr40 = 0; |
|
|
|
if (chan >= 3 && chan <= 11) |
|
maxpwr40 = QDB(16); |
|
|
|
for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { |
|
txpwr->mcs_20_siso[i] = (u8) maxpwr20; |
|
txpwr->mcs_40_siso[i] = (u8) maxpwr40; |
|
} |
|
} |
|
|
|
/* Fill in the MCS 0-7 STBC rates */ |
|
for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { |
|
txpwr->mcs_20_stbc[i] = 0; |
|
txpwr->mcs_40_stbc[i] = 0; |
|
} |
|
|
|
/* Fill in the MCS 8-15 SDM rates */ |
|
for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) { |
|
txpwr->mcs_20_mimo[i] = (u8) maxpwr20; |
|
txpwr->mcs_40_mimo[i] = (u8) maxpwr40; |
|
} |
|
|
|
/* Fill in MCS32 */ |
|
txpwr->mcs32 = (u8) maxpwr40; |
|
|
|
for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) { |
|
if (txpwr->ofdm_40_cdd[i] == 0) |
|
txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j]; |
|
if (i == 0) { |
|
i = i + 1; |
|
if (txpwr->ofdm_40_cdd[i] == 0) |
|
txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j]; |
|
} |
|
} |
|
|
|
/* |
|
* Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO |
|
* value if it wasn't provided explicitly. |
|
*/ |
|
for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { |
|
if (txpwr->mcs_40_siso[i] == 0) |
|
txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i]; |
|
} |
|
|
|
for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) { |
|
if (txpwr->ofdm_40_siso[i] == 0) |
|
txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j]; |
|
if (i == 0) { |
|
i = i + 1; |
|
if (txpwr->ofdm_40_siso[i] == 0) |
|
txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j]; |
|
} |
|
} |
|
|
|
/* |
|
* Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding |
|
* STBC values if they weren't provided explicitly. |
|
*/ |
|
for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) { |
|
if (txpwr->mcs_20_stbc[i] == 0) |
|
txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i]; |
|
|
|
if (txpwr->mcs_40_stbc[i] == 0) |
|
txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i]; |
|
} |
|
|
|
return; |
|
} |
|
|
|
/* |
|
* Verify the chanspec is using a legal set of parameters, i.e. that the |
|
* chanspec specified a band, bw, ctl_sb and channel and that the |
|
* combination could be legal given any set of circumstances. |
|
* RETURNS: true is the chanspec is malformed, false if it looks good. |
|
*/ |
|
static bool brcms_c_chspec_malformed(u16 chanspec) |
|
{ |
|
/* must be 2G or 5G band */ |
|
if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec)) |
|
return true; |
|
/* must be 20 or 40 bandwidth */ |
|
if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec)) |
|
return true; |
|
|
|
/* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */ |
|
if (CHSPEC_IS20(chanspec)) { |
|
if (!CHSPEC_SB_NONE(chanspec)) |
|
return true; |
|
} else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) { |
|
return true; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
/* |
|
* Validate the chanspec for this locale, for 40MHZ we need to also |
|
* check that the sidebands are valid 20MZH channels in this locale |
|
* and they are also a legal HT combination |
|
*/ |
|
static bool |
|
brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec) |
|
{ |
|
struct brcms_c_info *wlc = wlc_cm->wlc; |
|
u8 channel = CHSPEC_CHANNEL(chspec); |
|
|
|
/* check the chanspec */ |
|
if (brcms_c_chspec_malformed(chspec)) { |
|
brcms_err(wlc->hw->d11core, "wl%d: malformed chanspec 0x%x\n", |
|
wlc->pub->unit, chspec); |
|
return false; |
|
} |
|
|
|
if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) != |
|
chspec_bandunit(chspec)) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec) |
|
{ |
|
return brcms_c_valid_chanspec_ext(wlc_cm, chspec); |
|
} |
|
|
|
static bool brcms_is_radar_freq(u16 center_freq) |
|
{ |
|
return center_freq >= 5260 && center_freq <= 5700; |
|
} |
|
|
|
static void brcms_reg_apply_radar_flags(struct wiphy *wiphy) |
|
{ |
|
struct ieee80211_supported_band *sband; |
|
struct ieee80211_channel *ch; |
|
int i; |
|
|
|
sband = wiphy->bands[NL80211_BAND_5GHZ]; |
|
if (!sband) |
|
return; |
|
|
|
for (i = 0; i < sband->n_channels; i++) { |
|
ch = &sband->channels[i]; |
|
|
|
if (!brcms_is_radar_freq(ch->center_freq)) |
|
continue; |
|
|
|
/* |
|
* All channels in this range should be passive and have |
|
* DFS enabled. |
|
*/ |
|
if (!(ch->flags & IEEE80211_CHAN_DISABLED)) |
|
ch->flags |= IEEE80211_CHAN_RADAR | |
|
IEEE80211_CHAN_NO_IR; |
|
} |
|
} |
|
|
|
static void |
|
brcms_reg_apply_beaconing_flags(struct wiphy *wiphy, |
|
enum nl80211_reg_initiator initiator) |
|
{ |
|
struct ieee80211_supported_band *sband; |
|
struct ieee80211_channel *ch; |
|
const struct ieee80211_reg_rule *rule; |
|
int band, i; |
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) { |
|
sband = wiphy->bands[band]; |
|
if (!sband) |
|
continue; |
|
|
|
for (i = 0; i < sband->n_channels; i++) { |
|
ch = &sband->channels[i]; |
|
|
|
if (ch->flags & |
|
(IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR)) |
|
continue; |
|
|
|
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
|
rule = freq_reg_info(wiphy, |
|
MHZ_TO_KHZ(ch->center_freq)); |
|
if (IS_ERR(rule)) |
|
continue; |
|
|
|
if (!(rule->flags & NL80211_RRF_NO_IR)) |
|
ch->flags &= ~IEEE80211_CHAN_NO_IR; |
|
} else if (ch->beacon_found) { |
|
ch->flags &= ~IEEE80211_CHAN_NO_IR; |
|
} |
|
} |
|
} |
|
} |
|
|
|
static void brcms_reg_notifier(struct wiphy *wiphy, |
|
struct regulatory_request *request) |
|
{ |
|
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); |
|
struct brcms_info *wl = hw->priv; |
|
struct brcms_c_info *wlc = wl->wlc; |
|
struct ieee80211_supported_band *sband; |
|
struct ieee80211_channel *ch; |
|
int band, i; |
|
bool ch_found = false; |
|
|
|
brcms_reg_apply_radar_flags(wiphy); |
|
|
|
if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) |
|
brcms_reg_apply_beaconing_flags(wiphy, request->initiator); |
|
|
|
/* Disable radio if all channels disallowed by regulatory */ |
|
for (band = 0; !ch_found && band < NUM_NL80211_BANDS; band++) { |
|
sband = wiphy->bands[band]; |
|
if (!sband) |
|
continue; |
|
|
|
for (i = 0; !ch_found && i < sband->n_channels; i++) { |
|
ch = &sband->channels[i]; |
|
|
|
if (!(ch->flags & IEEE80211_CHAN_DISABLED)) |
|
ch_found = true; |
|
} |
|
} |
|
|
|
if (ch_found) { |
|
mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); |
|
} else { |
|
mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE); |
|
brcms_err(wlc->hw->d11core, |
|
"wl%d: %s: no valid channel for \"%s\"\n", |
|
wlc->pub->unit, __func__, request->alpha2); |
|
} |
|
|
|
if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G) |
|
wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi, |
|
brcms_c_japan_ccode(request->alpha2)); |
|
} |
|
|
|
void brcms_c_regd_init(struct brcms_c_info *wlc) |
|
{ |
|
struct wiphy *wiphy = wlc->wiphy; |
|
const struct brcms_regd *regd = wlc->cmi->world_regd; |
|
struct ieee80211_supported_band *sband; |
|
struct ieee80211_channel *ch; |
|
struct brcms_chanvec sup_chan; |
|
struct brcms_band *band; |
|
int band_idx, i; |
|
|
|
/* Disable any channels not supported by the phy */ |
|
for (band_idx = 0; band_idx < wlc->pub->_nbands; band_idx++) { |
|
band = wlc->bandstate[band_idx]; |
|
|
|
wlc_phy_chanspec_band_validch(band->pi, band->bandtype, |
|
&sup_chan); |
|
|
|
if (band_idx == BAND_2G_INDEX) |
|
sband = wiphy->bands[NL80211_BAND_2GHZ]; |
|
else |
|
sband = wiphy->bands[NL80211_BAND_5GHZ]; |
|
|
|
for (i = 0; i < sband->n_channels; i++) { |
|
ch = &sband->channels[i]; |
|
if (!isset(sup_chan.vec, ch->hw_value)) |
|
ch->flags |= IEEE80211_CHAN_DISABLED; |
|
} |
|
} |
|
|
|
wlc->wiphy->reg_notifier = brcms_reg_notifier; |
|
wlc->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | |
|
REGULATORY_STRICT_REG; |
|
wiphy_apply_custom_regulatory(wlc->wiphy, regd->regdomain); |
|
brcms_reg_apply_beaconing_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER); |
|
}
|
|
|