mirror of https://gitee.com/openkylin/linux.git
491 lines
13 KiB
C
491 lines
13 KiB
C
/*
|
|
* Copyright (c) 2008 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 "core.h"
|
|
#include "hw.h"
|
|
#include "regd.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 u16 ath9k_regd_get_eepromRD(struct ath_hal *ah)
|
|
{
|
|
return ah->ah_currentRD & ~WORLDWIDE_ROAMING_FLAG;
|
|
}
|
|
|
|
u16 ath9k_regd_get_rd(struct ath_hal *ah)
|
|
{
|
|
return ath9k_regd_get_eepromRD(ah);
|
|
}
|
|
|
|
bool ath9k_is_world_regd(struct ath_hal *ah)
|
|
{
|
|
return isWwrSKU(ah);
|
|
}
|
|
|
|
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 ath_hal *ah)
|
|
{
|
|
switch (ah->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);
|
|
}
|
|
|
|
/*
|
|
* Enable adhoc on 5 GHz if allowed by 11d.
|
|
* Remove passive scan if channel is allowed by 11d,
|
|
* except when on radar frequencies.
|
|
*/
|
|
static void ath9k_reg_apply_5ghz_beaconing_flags(struct wiphy *wiphy,
|
|
enum reg_set_by setby)
|
|
{
|
|
struct ieee80211_supported_band *sband;
|
|
const struct ieee80211_reg_rule *reg_rule;
|
|
struct ieee80211_channel *ch;
|
|
unsigned int i;
|
|
u32 bandwidth = 0;
|
|
int r;
|
|
|
|
if (setby != REGDOM_SET_BY_COUNTRY_IE)
|
|
return;
|
|
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];
|
|
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
|
|
* if it allows us to use it. Note that we would have disabled
|
|
* it by applying our static world regdomain by default during
|
|
* probe */
|
|
if (!(reg_rule->flags & NL80211_RRF_NO_IBSS))
|
|
ch->flags &= ~NL80211_RRF_NO_IBSS;
|
|
if (!ath9k_is_radar_freq(ch->center_freq))
|
|
continue;
|
|
if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
|
|
ch->flags &= ~NL80211_RRF_PASSIVE_SCAN;
|
|
}
|
|
}
|
|
|
|
/* Allows active scan scan on Ch 12 and 13 */
|
|
static void ath9k_reg_apply_active_scan_flags(struct wiphy *wiphy,
|
|
enum reg_set_by setby)
|
|
{
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_channel *ch;
|
|
const struct ieee80211_reg_rule *reg_rule;
|
|
u32 bandwidth = 0;
|
|
int r;
|
|
|
|
/* Force passive scan on Channels 12-13 */
|
|
sband = wiphy->bands[IEEE80211_BAND_2GHZ];
|
|
|
|
/* If no country IE has been received always enable active scan
|
|
* on these channels */
|
|
if (setby != 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 probe processing on
|
|
* 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 */
|
|
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 reg_set_by setby)
|
|
{
|
|
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
|
|
struct ath_softc *sc = hw->priv;
|
|
struct ath_hal *ah = sc->sc_ah;
|
|
|
|
switch (ah->regpair->regDmnEnum) {
|
|
case 0x60:
|
|
case 0x63:
|
|
case 0x66:
|
|
case 0x67:
|
|
ath9k_reg_apply_5ghz_beaconing_flags(wiphy, setby);
|
|
break;
|
|
case 0x68:
|
|
ath9k_reg_apply_5ghz_beaconing_flags(wiphy, setby);
|
|
ath9k_reg_apply_active_scan_flags(wiphy, setby);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
int ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
|
|
{
|
|
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
|
|
struct ath_softc *sc = hw->priv;
|
|
|
|
/* We always apply this */
|
|
ath9k_reg_apply_radar_flags(wiphy);
|
|
|
|
switch (request->initiator) {
|
|
case REGDOM_SET_BY_DRIVER:
|
|
case REGDOM_SET_BY_INIT:
|
|
case REGDOM_SET_BY_CORE:
|
|
case REGDOM_SET_BY_USER:
|
|
break;
|
|
case REGDOM_SET_BY_COUNTRY_IE:
|
|
if (ath9k_is_world_regd(sc->sc_ah))
|
|
ath9k_reg_apply_world_flags(wiphy, request->initiator);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool ath9k_regd_is_eeprom_valid(struct ath_hal *ah)
|
|
{
|
|
u16 rd = ath9k_regd_get_eepromRD(ah);
|
|
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;
|
|
}
|
|
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
|
|
"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(struct ath_hal *ah)
|
|
{
|
|
u16 rd;
|
|
|
|
rd = ath9k_regd_get_eepromRD(ah);
|
|
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 ®DomainPairs[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int ath9k_regd_init(struct ath_hal *ah)
|
|
{
|
|
struct country_code_to_enum_rd *country = NULL;
|
|
int regdmn;
|
|
|
|
if (!ath9k_regd_is_eeprom_valid(ah)) {
|
|
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
|
|
"Invalid EEPROM contents\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ah->ah_countryCode = ath9k_regd_get_default_country(ah);
|
|
|
|
if (ah->ah_countryCode == CTRY_DEFAULT &&
|
|
ath9k_regd_get_eepromRD(ah) == CTRY_DEFAULT)
|
|
ah->ah_countryCode = CTRY_UNITED_STATES;
|
|
|
|
if (ah->ah_countryCode == CTRY_DEFAULT) {
|
|
regdmn = ath9k_regd_get_eepromRD(ah);
|
|
country = NULL;
|
|
} else {
|
|
country = ath9k_regd_find_country(ah->ah_countryCode);
|
|
if (country == NULL) {
|
|
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
|
|
"Country is NULL!!!!, cc= %d\n",
|
|
ah->ah_countryCode);
|
|
return -EINVAL;
|
|
} else
|
|
regdmn = country->regDmnEnum;
|
|
}
|
|
|
|
ah->ah_currentRDInUse = regdmn;
|
|
ah->regpair = ath9k_get_regpair(regdmn);
|
|
|
|
if (!ah->regpair) {
|
|
DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
|
|
"No regulatory domain pair found, cannot continue\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!country)
|
|
country = ath9k_regd_find_country_by_rd(regdmn);
|
|
|
|
if (country) {
|
|
ah->alpha2[0] = country->isoName[0];
|
|
ah->alpha2[1] = country->isoName[1];
|
|
} else {
|
|
ah->alpha2[0] = '0';
|
|
ah->alpha2[1] = '0';
|
|
}
|
|
|
|
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
|
|
"Country alpha2 being used: %c%c\n"
|
|
"Regpair detected: 0x%0x\n",
|
|
ah->alpha2[0], ah->alpha2[1],
|
|
ah->regpair->regDmnEnum);
|
|
|
|
return 0;
|
|
}
|
|
|
|
u32 ath9k_regd_get_ctl(struct ath_hal *ah, struct ath9k_channel *chan)
|
|
{
|
|
u32 ctl = NO_CTL;
|
|
|
|
if (!ah->regpair ||
|
|
(ah->ah_countryCode == CTRY_DEFAULT && isWwrSKU(ah))) {
|
|
if (IS_CHAN_B(chan))
|
|
ctl = SD_NO_CTL | CTL_11B;
|
|
else if (IS_CHAN_G(chan))
|
|
ctl = SD_NO_CTL | CTL_11G;
|
|
else
|
|
ctl = SD_NO_CTL | CTL_11A;
|
|
return ctl;
|
|
}
|
|
|
|
if (IS_CHAN_B(chan))
|
|
ctl = ah->regpair->reg_2ghz_ctl | CTL_11B;
|
|
else if (IS_CHAN_G(chan))
|
|
ctl = ah->regpair->reg_5ghz_ctl | CTL_11G;
|
|
else
|
|
ctl = ah->regpair->reg_5ghz_ctl | CTL_11A;
|
|
|
|
return ctl;
|
|
}
|