aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath9k/regd.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath9k/regd.c')
-rw-r--r--drivers/net/wireless/ath9k/regd.c533
1 files changed, 0 insertions, 533 deletions
diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c
deleted file mode 100644
index 7eaa59e4a7d..00000000000
--- a/drivers/net/wireless/ath9k/regd.c
+++ /dev/null
@@ -1,533 +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/slab.h>
-#include <net/wireless.h>
-#include "ath9k.h"
-#include "regd_common.h"
-
-/*
- * 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 ath9k_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 ath9k_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 ath9k_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 ath9k_world_regdom_66_69 = {
- .n_reg_rules = 3,
- .alpha2 = "99",
- .reg_rules = {
- ATH9K_2GHZ_CH01_11,
- ATH9K_5GHZ_ALL,
- }
-};
-
-/* Can be used by 0x67, 0x6A and 0x68 */
-static const struct ieee80211_regdomain ath9k_world_regdom_67_68_6A = {
- .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 & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) ||
- (regd == WORLD);
-}
-
-static u16 ath9k_regd_get_eepromRD(struct ath9k_regulatory *reg)
-{
- return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG;
-}
-
-bool ath9k_is_world_regd(struct ath9k_regulatory *reg)
-{
- return is_wwr_sku(ath9k_regd_get_eepromRD(reg));
-}
-
-const struct ieee80211_regdomain *ath9k_default_world_regdomain(void)
-{
- /* this is the most restrictive */
- return &ath9k_world_regdom_64;
-}
-
-const struct
-ieee80211_regdomain *ath9k_world_regdomain(struct ath9k_regulatory *reg)
-{
- switch (reg->regpair->regDmnEnum) {
- case 0x60:
- case 0x61:
- case 0x62:
- return &ath9k_world_regdom_60_61_62;
- case 0x63:
- case 0x65:
- return &ath9k_world_regdom_63_65;
- case 0x64:
- return &ath9k_world_regdom_64;
- case 0x66:
- case 0x69:
- return &ath9k_world_regdom_66_69;
- case 0x67:
- case 0x68:
- case 0x6A:
- return &ath9k_world_regdom_67_68_6A;
- default:
- WARN_ON(1);
- return ath9k_default_world_regdomain();
- }
-}
-
-/* Frequency is one where radar detection is required */
-static bool ath9k_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 ath9k_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 (ath9k_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, &reg_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 ath9k_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 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 recieved 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, &reg_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, &reg_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 */
-void ath9k_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 (!ath9k_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;
- }
-}
-
-void ath9k_reg_apply_world_flags(struct wiphy *wiphy,
- enum nl80211_reg_initiator initiator,
- struct ath9k_regulatory *reg)
-{
- switch (reg->regpair->regDmnEnum) {
- case 0x60:
- case 0x63:
- case 0x66:
- case 0x67:
- ath9k_reg_apply_beaconing_flags(wiphy, initiator);
- break;
- case 0x68:
- ath9k_reg_apply_beaconing_flags(wiphy, initiator);
- ath9k_reg_apply_active_scan_flags(wiphy, initiator);
- break;
- }
- return;
-}
-
-static int ath9k_reg_notifier_apply(struct wiphy *wiphy,
- struct regulatory_request *request, struct ath9k_regulatory *reg)
-{
- /* We always apply this */
- ath9k_reg_apply_radar_flags(wiphy);
-
- switch (request->initiator) {
- case NL80211_REGDOM_SET_BY_DRIVER:
- case NL80211_REGDOM_SET_BY_CORE:
- case NL80211_REGDOM_SET_BY_USER:
- break;
- case NL80211_REGDOM_SET_BY_COUNTRY_IE:
- if (ath9k_is_world_regd(reg))
- ath9k_reg_apply_world_flags(wiphy, request->initiator,
- reg);
- break;
- }
-
- return 0;
-}
-
-int ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
-{
- struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
- struct ath9k_regulatory *reg = &sc->sc_ah->regulatory;
-
- return ath9k_reg_notifier_apply(wiphy, request, reg);
-}
-
-bool ath9k_regd_is_eeprom_valid(struct ath9k_regulatory *reg)
-{
- u16 rd = ath9k_regd_get_eepromRD(reg);
- int i;
-
- if (rd & COUNTRY_ERD_FLAG) {
- /* EEPROM value is a country code */
- u16 cc = rd & ~COUNTRY_ERD_FLAG;
- for (i = 0; i < ARRAY_SIZE(allCountries); i++)
- if (allCountries[i].countryCode == cc)
- return true;
- } else {
- /* EEPROM value is a regpair value */
- for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
- if (regDomainPairs[i].regDmnEnum == rd)
- return true;
- }
- printk(KERN_DEBUG
- "ath9k: invalid regulatory domain/country code 0x%x\n", rd);
- return false;
-}
-
-/* EEPROM country code to regpair mapping */
-static struct country_code_to_enum_rd*
-ath9k_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*
-ath9k_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 ath9k_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 = ath9k_regd_find_country(cc);
- if (country != NULL)
- return cc;
- }
-
- return CTRY_DEFAULT;
-}
-
-static struct reg_dmn_pair_mapping*
-ath9k_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 &regDomainPairs[i];
- }
- return NULL;
-}
-
-int ath9k_regd_init(struct ath9k_regulatory *reg)
-{
- struct country_code_to_enum_rd *country = NULL;
- u16 regdmn;
-
- if (!ath9k_regd_is_eeprom_valid(reg)) {
- printk(KERN_DEBUG "ath9k: Invalid EEPROM contents\n");
- return -EINVAL;
- }
-
- regdmn = ath9k_regd_get_eepromRD(reg);
- reg->country_code = ath9k_regd_get_default_country(regdmn);
-
- if (reg->country_code == CTRY_DEFAULT &&
- regdmn == CTRY_DEFAULT)
- reg->country_code = CTRY_UNITED_STATES;
-
- if (reg->country_code == CTRY_DEFAULT) {
- country = NULL;
- } else {
- country = ath9k_regd_find_country(reg->country_code);
- if (country == NULL) {
- printk(KERN_DEBUG
- "ath9k: Country is NULL!!!!, cc= %d\n",
- reg->country_code);
- return -EINVAL;
- } else
- regdmn = country->regDmnEnum;
- }
-
- reg->regpair = ath9k_get_regpair(regdmn);
-
- if (!reg->regpair) {
- printk(KERN_DEBUG "ath9k: "
- "No regulatory domain pair found, cannot continue\n");
- return -EINVAL;
- }
-
- if (!country)
- country = ath9k_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 "ath9k: Country alpha2 being used: %c%c\n",
- reg->alpha2[0], reg->alpha2[1]);
- printk(KERN_DEBUG "ath9k: Regpair detected: 0x%0x\n",
- reg->regpair->regDmnEnum);
-
- return 0;
-}
-
-static
-u32 ath9k_regd_get_band_ctl(struct ath9k_regulatory *reg,
- enum ieee80211_band band)
-{
- if (!reg->regpair ||
- (reg->country_code == CTRY_DEFAULT &&
- is_wwr_sku(ath9k_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;
- }
-
- return NO_CTL;
-}
-
-u32 ath9k_regd_get_ctl(struct ath9k_regulatory *reg, struct ath9k_channel *chan)
-{
- u32 ctl = ath9k_regd_get_band_ctl(reg, chan->chan->band);
-
- if (IS_CHAN_B(chan))
- ctl |= CTL_11B;
- else if (IS_CHAN_G(chan))
- ctl |= CTL_11G;
- else
- ctl |= CTL_11A;
-
- return ctl;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 07:55:38 +0000