diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/wireless/ath/regd.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/wireless/ath/regd.c | 668 |
1 files changed, 0 insertions, 668 deletions
diff --git a/ANDROID_3.4.5/drivers/net/wireless/ath/regd.c b/ANDROID_3.4.5/drivers/net/wireless/ath/regd.c deleted file mode 100644 index 10dea374..00000000 --- a/ANDROID_3.4.5/drivers/net/wireless/ath/regd.c +++ /dev/null @@ -1,668 +0,0 @@ -/* - * Copyright (c) 2008-2009 Atheros Communications Inc. - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <linux/kernel.h> -#include <linux/export.h> -#include <net/cfg80211.h> -#include <net/mac80211.h> -#include "regd.h" -#include "regd_common.h" - -static int __ath_regd_init(struct ath_regulatory *reg); - -/* - * This is a set of common rules used by our world regulatory domains. - * We have 12 world regulatory domains. To save space we consolidate - * the regulatory domains in 5 structures by frequency and change - * the flags on our reg_notifier() on a case by case basis. - */ - -/* Only these channels all allow active scan on all world regulatory domains */ -#define ATH9K_2GHZ_CH01_11 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0) - -/* We enable active scan on these a case by case basis by regulatory domain */ -#define ATH9K_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\ - NL80211_RRF_PASSIVE_SCAN) -#define ATH9K_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\ - NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM) - -/* We allow IBSS on these on a case by case basis by regulatory domain */ -#define ATH9K_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 40, 0, 30,\ - NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) -#define ATH9K_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 40, 0, 30,\ - NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) -#define ATH9K_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 40, 0, 30,\ - NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS) - -#define ATH9K_2GHZ_ALL ATH9K_2GHZ_CH01_11, \ - ATH9K_2GHZ_CH12_13, \ - ATH9K_2GHZ_CH14 - -#define ATH9K_5GHZ_ALL ATH9K_5GHZ_5150_5350, \ - ATH9K_5GHZ_5470_5850 - -/* This one skips what we call "mid band" */ -#define ATH9K_5GHZ_NO_MIDBAND ATH9K_5GHZ_5150_5350, \ - ATH9K_5GHZ_5725_5850 - -/* Can be used for: - * 0x60, 0x61, 0x62 */ -static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { - .n_reg_rules = 5, - .alpha2 = "99", - .reg_rules = { - ATH9K_2GHZ_ALL, - ATH9K_5GHZ_ALL, - } -}; - -/* Can be used by 0x63 and 0x65 */ -static const struct ieee80211_regdomain ath_world_regdom_63_65 = { - .n_reg_rules = 4, - .alpha2 = "99", - .reg_rules = { - ATH9K_2GHZ_CH01_11, - ATH9K_2GHZ_CH12_13, - ATH9K_5GHZ_NO_MIDBAND, - } -}; - -/* Can be used by 0x64 only */ -static const struct ieee80211_regdomain ath_world_regdom_64 = { - .n_reg_rules = 3, - .alpha2 = "99", - .reg_rules = { - ATH9K_2GHZ_CH01_11, - ATH9K_5GHZ_NO_MIDBAND, - } -}; - -/* Can be used by 0x66 and 0x69 */ -static const struct ieee80211_regdomain ath_world_regdom_66_69 = { - .n_reg_rules = 3, - .alpha2 = "99", - .reg_rules = { - ATH9K_2GHZ_CH01_11, - ATH9K_5GHZ_ALL, - } -}; - -/* Can be used by 0x67, 0x68, 0x6A and 0x6C */ -static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { - .n_reg_rules = 4, - .alpha2 = "99", - .reg_rules = { - ATH9K_2GHZ_CH01_11, - ATH9K_2GHZ_CH12_13, - ATH9K_5GHZ_ALL, - } -}; - -static inline bool is_wwr_sku(u16 regd) -{ - return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && - (((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || - (regd == WORLD)); -} - -static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) -{ - return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; -} - -bool ath_is_world_regd(struct ath_regulatory *reg) -{ - return is_wwr_sku(ath_regd_get_eepromRD(reg)); -} -EXPORT_SYMBOL(ath_is_world_regd); - -static const struct ieee80211_regdomain *ath_default_world_regdomain(void) -{ - /* this is the most restrictive */ - return &ath_world_regdom_64; -} - -static const struct -ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) -{ - switch (reg->regpair->regDmnEnum) { - case 0x60: - case 0x61: - case 0x62: - return &ath_world_regdom_60_61_62; - case 0x63: - case 0x65: - return &ath_world_regdom_63_65; - case 0x64: - return &ath_world_regdom_64; - case 0x66: - case 0x69: - return &ath_world_regdom_66_69; - case 0x67: - case 0x68: - case 0x6A: - case 0x6C: - return &ath_world_regdom_67_68_6A_6C; - default: - WARN_ON(1); - return ath_default_world_regdomain(); - } -} - -bool ath_is_49ghz_allowed(u16 regdomain) -{ - /* possibly more */ - return regdomain == MKK9_MKKC; -} -EXPORT_SYMBOL(ath_is_49ghz_allowed); - -/* Frequency is one where radar detection is required */ -static bool ath_is_radar_freq(u16 center_freq) -{ - return (center_freq >= 5260 && center_freq <= 5700); -} - -/* - * N.B: These exception rules do not apply radar freqs. - * - * - We enable adhoc (or beaconing) if allowed by 11d - * - We enable active scan if the channel is allowed by 11d - * - If no country IE has been processed and a we determine we have - * received a beacon on a channel we can enable active scan and - * adhoc (or beaconing). - */ -static void -ath_reg_apply_beaconing_flags(struct wiphy *wiphy, - enum nl80211_reg_initiator initiator) -{ - enum ieee80211_band band; - struct ieee80211_supported_band *sband; - const struct ieee80211_reg_rule *reg_rule; - struct ieee80211_channel *ch; - unsigned int i; - u32 bandwidth = 0; - int r; - - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { - - if (!wiphy->bands[band]) - continue; - - sband = wiphy->bands[band]; - - for (i = 0; i < sband->n_channels; i++) { - - ch = &sband->channels[i]; - - if (ath_is_radar_freq(ch->center_freq) || - (ch->flags & IEEE80211_CHAN_RADAR)) - continue; - - if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { - r = freq_reg_info(wiphy, - ch->center_freq, - bandwidth, - ®_rule); - if (r) - continue; - /* - * If 11d had a rule for this channel ensure - * we enable adhoc/beaconing if it allows us to - * use it. Note that we would have disabled it - * by applying our static world regdomain by - * default during init, prior to calling our - * regulatory_hint(). - */ - if (!(reg_rule->flags & - NL80211_RRF_NO_IBSS)) - ch->flags &= - ~IEEE80211_CHAN_NO_IBSS; - if (!(reg_rule->flags & - NL80211_RRF_PASSIVE_SCAN)) - ch->flags &= - ~IEEE80211_CHAN_PASSIVE_SCAN; - } else { - if (ch->beacon_found) - ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN); - } - } - } - -} - -/* Allows active scan scan on Ch 12 and 13 */ -static void -ath_reg_apply_active_scan_flags(struct wiphy *wiphy, - enum nl80211_reg_initiator initiator) -{ - struct ieee80211_supported_band *sband; - struct ieee80211_channel *ch; - const struct ieee80211_reg_rule *reg_rule; - u32 bandwidth = 0; - int r; - - sband = wiphy->bands[IEEE80211_BAND_2GHZ]; - if (!sband) - return; - - /* - * If no country IE has been received always enable active scan - * on these channels. This is only done for specific regulatory SKUs - */ - if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { - ch = &sband->channels[11]; /* CH 12 */ - if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) - ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; - ch = &sband->channels[12]; /* CH 13 */ - if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) - ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; - return; - } - - /* - * If a country IE has been received check its rule for this - * channel first before enabling active scan. The passive scan - * would have been enforced by the initial processing of our - * custom regulatory domain. - */ - - ch = &sband->channels[11]; /* CH 12 */ - r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); - if (!r) { - if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) - if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) - ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; - } - - ch = &sband->channels[12]; /* CH 13 */ - r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule); - if (!r) { - if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) - if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) - ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; - } -} - -/* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ -static void ath_reg_apply_radar_flags(struct wiphy *wiphy) -{ - struct ieee80211_supported_band *sband; - struct ieee80211_channel *ch; - unsigned int i; - - if (!wiphy->bands[IEEE80211_BAND_5GHZ]) - return; - - sband = wiphy->bands[IEEE80211_BAND_5GHZ]; - - for (i = 0; i < sband->n_channels; i++) { - ch = &sband->channels[i]; - if (!ath_is_radar_freq(ch->center_freq)) - continue; - /* We always enable radar detection/DFS on this - * frequency range. Additionally we also apply on - * this frequency range: - * - If STA mode does not yet have DFS supports disable - * active scanning - * - If adhoc mode does not support DFS yet then - * disable adhoc in the frequency. - * - If AP mode does not yet support radar detection/DFS - * do not allow AP mode - */ - if (!(ch->flags & IEEE80211_CHAN_DISABLED)) - ch->flags |= IEEE80211_CHAN_RADAR | - IEEE80211_CHAN_NO_IBSS | - IEEE80211_CHAN_PASSIVE_SCAN; - } -} - -static void ath_reg_apply_world_flags(struct wiphy *wiphy, - enum nl80211_reg_initiator initiator, - struct ath_regulatory *reg) -{ - switch (reg->regpair->regDmnEnum) { - case 0x60: - case 0x63: - case 0x66: - case 0x67: - case 0x6C: - ath_reg_apply_beaconing_flags(wiphy, initiator); - break; - case 0x68: - ath_reg_apply_beaconing_flags(wiphy, initiator); - ath_reg_apply_active_scan_flags(wiphy, initiator); - break; - } -} - -static u16 ath_regd_find_country_by_name(char *alpha2) -{ - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(allCountries); i++) { - if (!memcmp(allCountries[i].isoName, alpha2, 2)) - return allCountries[i].countryCode; - } - - return -1; -} - -int ath_reg_notifier_apply(struct wiphy *wiphy, - struct regulatory_request *request, - struct ath_regulatory *reg) -{ - struct ath_common *common = container_of(reg, struct ath_common, - regulatory); - u16 country_code; - - /* We always apply this */ - ath_reg_apply_radar_flags(wiphy); - - /* - * This would happen when we have sent a custom regulatory request - * a world regulatory domain and the scheduler hasn't yet processed - * any pending requests in the queue. - */ - if (!request) - return 0; - - switch (request->initiator) { - case NL80211_REGDOM_SET_BY_CORE: - /* - * If common->reg_world_copy is world roaming it means we *were* - * world roaming... so we now have to restore that data. - */ - if (!ath_is_world_regd(&common->reg_world_copy)) - break; - - memcpy(reg, &common->reg_world_copy, - sizeof(struct ath_regulatory)); - break; - case NL80211_REGDOM_SET_BY_DRIVER: - case NL80211_REGDOM_SET_BY_USER: - break; - case NL80211_REGDOM_SET_BY_COUNTRY_IE: - if (!ath_is_world_regd(reg)) - break; - - country_code = ath_regd_find_country_by_name(request->alpha2); - if (country_code == (u16) -1) - break; - - reg->current_rd = COUNTRY_ERD_FLAG; - reg->current_rd |= country_code; - - printk(KERN_DEBUG "ath: regdomain 0x%0x updated by CountryIE\n", - reg->current_rd); - __ath_regd_init(reg); - - ath_reg_apply_world_flags(wiphy, request->initiator, reg); - - break; - } - - return 0; -} -EXPORT_SYMBOL(ath_reg_notifier_apply); - -static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) -{ - u16 rd = ath_regd_get_eepromRD(reg); - int i; - - if (rd & COUNTRY_ERD_FLAG) { - /* EEPROM value is a country code */ - u16 cc = rd & ~COUNTRY_ERD_FLAG; - printk(KERN_DEBUG - "ath: EEPROM indicates we should expect " - "a country code\n"); - for (i = 0; i < ARRAY_SIZE(allCountries); i++) - if (allCountries[i].countryCode == cc) - return true; - } else { - /* EEPROM value is a regpair value */ - if (rd != CTRY_DEFAULT) - printk(KERN_DEBUG "ath: EEPROM indicates we " - "should expect a direct regpair map\n"); - for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) - if (regDomainPairs[i].regDmnEnum == rd) - return true; - } - printk(KERN_DEBUG - "ath: invalid regulatory domain/country code 0x%x\n", rd); - return false; -} - -/* EEPROM country code to regpair mapping */ -static struct country_code_to_enum_rd* -ath_regd_find_country(u16 countryCode) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(allCountries); i++) { - if (allCountries[i].countryCode == countryCode) - return &allCountries[i]; - } - return NULL; -} - -/* EEPROM rd code to regpair mapping */ -static struct country_code_to_enum_rd* -ath_regd_find_country_by_rd(int regdmn) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(allCountries); i++) { - if (allCountries[i].regDmnEnum == regdmn) - return &allCountries[i]; - } - return NULL; -} - -/* Returns the map of the EEPROM set RD to a country code */ -static u16 ath_regd_get_default_country(u16 rd) -{ - if (rd & COUNTRY_ERD_FLAG) { - struct country_code_to_enum_rd *country = NULL; - u16 cc = rd & ~COUNTRY_ERD_FLAG; - - country = ath_regd_find_country(cc); - if (country != NULL) - return cc; - } - - return CTRY_DEFAULT; -} - -static struct reg_dmn_pair_mapping* -ath_get_regpair(int regdmn) -{ - int i; - - if (regdmn == NO_ENUMRD) - return NULL; - for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { - if (regDomainPairs[i].regDmnEnum == regdmn) - return ®DomainPairs[i]; - } - return NULL; -} - -static int -ath_regd_init_wiphy(struct ath_regulatory *reg, - struct wiphy *wiphy, - int (*reg_notifier)(struct wiphy *wiphy, - struct regulatory_request *request)) -{ - const struct ieee80211_regdomain *regd; - - wiphy->reg_notifier = reg_notifier; - wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; - - if (ath_is_world_regd(reg)) { - /* - * Anything applied here (prior to wiphy registration) gets - * saved on the wiphy orig_* parameters - */ - regd = ath_world_regdomain(reg); - wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - } else { - /* - * This gets applied in the case of the absence of CRDA, - * it's our own custom world regulatory domain, similar to - * cfg80211's but we enable passive scanning. - */ - regd = ath_default_world_regdomain(); - } - wiphy_apply_custom_regulatory(wiphy, regd); - ath_reg_apply_radar_flags(wiphy); - ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); - return 0; -} - -/* - * Some users have reported their EEPROM programmed with - * 0x8000 set, this is not a supported regulatory domain - * but since we have more than one user with it we need - * a solution for them. We default to 0x64, which is the - * default Atheros world regulatory domain. - */ -static void ath_regd_sanitize(struct ath_regulatory *reg) -{ - if (reg->current_rd != COUNTRY_ERD_FLAG) - return; - printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); - reg->current_rd = 0x64; -} - -static int __ath_regd_init(struct ath_regulatory *reg) -{ - struct country_code_to_enum_rd *country = NULL; - u16 regdmn; - - if (!reg) - return -EINVAL; - - ath_regd_sanitize(reg); - - printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); - - if (!ath_regd_is_eeprom_valid(reg)) { - printk(KERN_ERR "ath: Invalid EEPROM contents\n"); - return -EINVAL; - } - - regdmn = ath_regd_get_eepromRD(reg); - reg->country_code = ath_regd_get_default_country(regdmn); - - if (reg->country_code == CTRY_DEFAULT && - regdmn == CTRY_DEFAULT) { - printk(KERN_DEBUG "ath: EEPROM indicates default " - "country code should be used\n"); - reg->country_code = CTRY_UNITED_STATES; - } - - if (reg->country_code == CTRY_DEFAULT) { - country = NULL; - } else { - printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " - "map search\n"); - country = ath_regd_find_country(reg->country_code); - if (country == NULL) { - printk(KERN_DEBUG - "ath: no valid country maps found for " - "country code: 0x%0x\n", - reg->country_code); - return -EINVAL; - } else { - regdmn = country->regDmnEnum; - printk(KERN_DEBUG "ath: country maps to " - "regdmn code: 0x%0x\n", - regdmn); - } - } - - reg->regpair = ath_get_regpair(regdmn); - - if (!reg->regpair) { - printk(KERN_DEBUG "ath: " - "No regulatory domain pair found, cannot continue\n"); - return -EINVAL; - } - - if (!country) - country = ath_regd_find_country_by_rd(regdmn); - - if (country) { - reg->alpha2[0] = country->isoName[0]; - reg->alpha2[1] = country->isoName[1]; - } else { - reg->alpha2[0] = '0'; - reg->alpha2[1] = '0'; - } - - printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", - reg->alpha2[0], reg->alpha2[1]); - printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", - reg->regpair->regDmnEnum); - - return 0; -} - -int -ath_regd_init(struct ath_regulatory *reg, - struct wiphy *wiphy, - int (*reg_notifier)(struct wiphy *wiphy, - struct regulatory_request *request)) -{ - struct ath_common *common = container_of(reg, struct ath_common, - regulatory); - int r; - - r = __ath_regd_init(reg); - if (r) - return r; - - if (ath_is_world_regd(reg)) - memcpy(&common->reg_world_copy, reg, - sizeof(struct ath_regulatory)); - - ath_regd_init_wiphy(reg, wiphy, reg_notifier); - - return 0; -} -EXPORT_SYMBOL(ath_regd_init); - -u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, - enum ieee80211_band band) -{ - if (!reg->regpair || - (reg->country_code == CTRY_DEFAULT && - is_wwr_sku(ath_regd_get_eepromRD(reg)))) { - return SD_NO_CTL; - } - - switch (band) { - case IEEE80211_BAND_2GHZ: - return reg->regpair->reg_2ghz_ctl; - case IEEE80211_BAND_5GHZ: - return reg->regpair->reg_5ghz_ctl; - default: - return NO_CTL; - } -} -EXPORT_SYMBOL(ath_regd_get_band_ctl); |