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M7350/external/compat-wireless/drivers/net/wireless/ath/ath6kl-3.5/reg.c

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M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
/*
* Copyright (c) 2004-2013 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 "core.h"
#include "debug.h"
/* Default Regulatory for invalid reg_code. */
static struct ieee80211_regdomain ath6kl_regd_NA = {
.n_reg_rules = 1,
.alpha2 = "NA",
.reg_rules = {
REG_RULE(2412 - 10, 2462 + 10, 20, 3, 20, 0),
}
};
/*
* Naming from ISO 3166
*/
static const struct reg_code_to_isoname ath6kl_country_code_to_iso_name[] = {
/* Country Code */
{COUNTRY_ALBANIA, "AL", NULL},
{COUNTRY_ALGERIA, "DZ", NULL},
{COUNTRY_ARGENTINA, "AR", NULL},
{COUNTRY_ARMENIA, "AM", NULL},
{COUNTRY_ARUBA, "AW", NULL},
{COUNTRY_AUSTRALIA, "AU", NULL},
{COUNTRY_AUSTRALIA_AP, "A2", NULL},
{COUNTRY_AUSTRIA, "AT", NULL},
{COUNTRY_AZERBAIJAN, "AZ", NULL},
{COUNTRY_BAHRAIN, "BH", NULL},
{COUNTRY_BANGLADESH, "BD", NULL},
{COUNTRY_BARBADOS, "BB", NULL},
{COUNTRY_BELARUS, "BY", NULL},
{COUNTRY_BELGIUM, "BE", NULL},
{COUNTRY_BELIZE, "BZ", NULL},
{COUNTRY_BOLIVIA, "BO", NULL},
{COUNTRY_BOSNIA_HERZEGOWANIA, "BA", NULL},
{COUNTRY_BRAZIL, "BR", NULL},
{COUNTRY_BRUNEI_DARUSSALAM, "BN", NULL},
{COUNTRY_BULGARIA, "BG", NULL},
{COUNTRY_CAMBODIA, "KH", NULL},
{COUNTRY_CANADA, "CA", NULL},
{COUNTRY_CANADA_AP, "C2", NULL},
{COUNTRY_CHILE, "CL", NULL},
{COUNTRY_CHINA, "CN", NULL},
{COUNTRY_COLOMBIA, "CO", NULL},
{COUNTRY_COSTA_RICA, "CR", NULL},
{COUNTRY_CROATIA, "HR", NULL},
{COUNTRY_CYPRUS, "CY", NULL},
{COUNTRY_CZECH, "CZ", NULL},
{COUNTRY_DENMARK, "DK", NULL},
{COUNTRY_DOMINICAN_REPUBLIC, "DO", NULL},
{COUNTRY_ECUADOR, "EC", NULL},
{COUNTRY_EGYPT, "EG", NULL},
{COUNTRY_EL_SALVADOR, "SV", NULL},
{COUNTRY_ESTONIA, "EE", NULL},
{COUNTRY_FAEROE_ISLANDS, "FO", NULL}, /* NOT SUPPORT */
{COUNTRY_FINLAND, "FI", NULL},
{COUNTRY_FRANCE, "FR", NULL},
{COUNTRY_FRANCE2, "F2", NULL},
{COUNTRY_GEORGIA, "GE", NULL},
{COUNTRY_GERMANY, "DE", NULL},
{COUNTRY_GREECE, "GR", NULL},
{COUNTRY_GREENLAND, "GL", NULL},
{COUNTRY_GRENADA, "GD", NULL},
{COUNTRY_GUAM, "GU", NULL},
{COUNTRY_GUATEMALA, "GT", NULL},
{COUNTRY_HAITI, "HT", NULL},
{COUNTRY_HONDURAS, "HN", NULL},
{COUNTRY_HONG_KONG, "KH", NULL},
{COUNTRY_HUNGARY, "HU", NULL},
{COUNTRY_ICELAND, "IS", NULL},
{COUNTRY_INDIA, "IN", NULL},
{COUNTRY_INDONESIA, "ID", NULL},
{COUNTRY_IRAN, "IR", NULL},
{COUNTRY_IRAQ, "IQ", NULL}, /* NOT SUPPORT */
{COUNTRY_IRELAND, "IE", NULL},
{COUNTRY_ISRAEL, "IL", NULL},
{COUNTRY_ITALY, "IT", NULL},
{COUNTRY_JAMAICA, "JM", NULL},
{COUNTRY_JAPAN, "JP", NULL},
{COUNTRY_JAPAN1, "J2", NULL}, /* NOT SUPPORT */
{COUNTRY_JAPAN2, "J3", NULL}, /* NOT SUPPORT */
{COUNTRY_JAPAN3, "J4", NULL}, /* NOT SUPPORT */
{COUNTRY_JAPAN4, "J5", NULL}, /* NOT SUPPORT */
{COUNTRY_JAPAN5, "J6", NULL}, /* NOT SUPPORT */
{COUNTRY_JAPAN6, "J7", NULL}, /* NOT SUPPORT */
{COUNTRY_JORDAN, "JO", NULL},
{COUNTRY_KAZAKHSTAN, "KZ", NULL},
{COUNTRY_KENYA, "KE", NULL},
{COUNTRY_KOREA_NORTH, "KP", NULL},
{COUNTRY_KOREA_ROC, "KR", NULL},
{COUNTRY_KOREA_ROC2, "K2", NULL},
{COUNTRY_KOREA_ROC3, "K3", NULL},
{COUNTRY_KUWAIT, "KW", NULL},
{COUNTRY_LATVIA, "LV", NULL},
{COUNTRY_LEBANON, "LE", NULL},
{COUNTRY_LIBYA, "LY", NULL}, /* NOT SUPPORT */
{COUNTRY_LIECHTENSTEIN, "LI", NULL},
{COUNTRY_LITHUANIA, "LT", NULL},
{COUNTRY_LUXEMBOURG, "LU", NULL},
{COUNTRY_MACAU, "MO", NULL},
{COUNTRY_MACEDONIA, "MK", NULL},
{COUNTRY_MALAYSIA, "MY", NULL},
{COUNTRY_MALTA, "MT", NULL},
{COUNTRY_MEXICO, "MX", NULL},
{COUNTRY_MONACO, "MC", NULL},
{COUNTRY_MOROCCO, "MA", NULL},
{COUNTRY_NEPAL, "NP", NULL},
{COUNTRY_NETHERLANDS, "NL", NULL},
{COUNTRY_NETHERLAND_ANTILLES, "AN", NULL},
{COUNTRY_NEW_ZEALAND, "NZ", NULL},
{COUNTRY_NICARAGUA, "NI", NULL}, /* NOT SUPPORT */
{COUNTRY_NORWAY, "NO", NULL},
{COUNTRY_OMAN, "OM", NULL},
{COUNTRY_PAKISTAN, "PK", NULL},
{COUNTRY_PANAMA, "PA", NULL},
{COUNTRY_PARAGUAY, "PY", NULL}, /* NOT SUPPORT */
{COUNTRY_PERU, "PE", NULL},
{COUNTRY_PHILIPPINES, "PH", NULL},
{COUNTRY_POLAND, "PL", NULL},
{COUNTRY_PORTUGAL, "PT", NULL},
{COUNTRY_PUERTO_RICO, "PR", NULL},
{COUNTRY_QATAR, "QA", NULL},
{COUNTRY_ROMANIA, "RO", NULL},
{COUNTRY_RUSSIA, "RU", NULL},
{COUNTRY_RWANDA, "RW", NULL},
{COUNTRY_SAUDI_ARABIA, "SA", NULL},
{COUNTRY_SERBIA, "RS", NULL}, /* NOT SUPPORT */
{COUNTRY_MONTENEGRO, "ME", NULL},
{COUNTRY_SINGAPORE, "SG", NULL},
{COUNTRY_SLOVAKIA, "SK", NULL},
{COUNTRY_SLOVENIA, "SI", NULL},
{COUNTRY_SOUTH_AFRICA, "ZA", NULL},
{COUNTRY_SPAIN, "ES", NULL},
{COUNTRY_SRILANKA, "LK", NULL},
{COUNTRY_SWEDEN, "SE", NULL},
{COUNTRY_SWITZERLAND, "CH", NULL},
{COUNTRY_SYRIA, "SY", NULL},
{COUNTRY_TAIWAN, "TW", NULL},
{COUNTRY_THAILAND, "TH", NULL},
{COUNTRY_TRINIDAD_Y_TOBAGO, "TT", NULL},
{COUNTRY_TUNISIA, "TN", NULL},
{COUNTRY_TURKEY, "TR", NULL},
{COUNTRY_UAE, "AE", NULL},
{COUNTRY_UGANDA, "UG", NULL},
{COUNTRY_UKRAINE, "UA", NULL},
{COUNTRY_UNITED_KINGDOM, "GB", NULL},
{COUNTRY_UNITED_STATES, "US", NULL},
{COUNTRY_UNITED_STATES_AP, "U2", NULL},
{COUNTRY_UNITED_STATES_PS, "PS", NULL},
{COUNTRY_URUGUAY, "UY", NULL},
{COUNTRY_UZBEKISTAN, "UZ", NULL},
{COUNTRY_VENEZUELA, "VE", NULL},
{COUNTRY_VIET_NAM, "VN", NULL},
{COUNTRY_YEMEN, "YE", NULL},
{COUNTRY_ZIMBABWE, "ZW", NULL},
/* keep last */
{NULL_REG_CODE, NULL},
};
static const struct reg_code_to_isoname ath6kl_region_code_to_name[] = {
/* Region Code */
{REGION_NO_ENUMRD, "00", NULL}, /* DEBUG */
{REGION_NULL1_WORLD, "03", "AL"},
{REGION_NULL1_ETSIB, "07", NULL},
{REGION_NULL1_ETSIC, "08", NULL},
{REGION_FCC1_FCCA, "10", "CO"},
{REGION_FCC1_WORLD, "11", "CR"},
{REGION_FCC2_FCCA, "20", NULL},
{REGION_FCC2_WORLD, "21", "BB"},
{REGION_FCC2_ETSIC, "22", NULL},
{REGION_FCC3_FCCA, "3a", "CA"},
{REGION_FCC3_WORLD, "3b", "AR"},
{REGION_FCC3_ETSIC, "3f", "NZ"},
{REGION_FCC4_FCCA, "12", "PS"},
{REGION_FCC5_FCCA, "13", NULL},
{REGION_FCC5_WORLD, "16", NULL},
{REGION_FCC6_FCCA, "14", "CA"},
{REGION_FCC6_WORLD, "23", "AU"},
{REGION_ETSI1_WORLD, "37", "AW"},
{REGION_ETSI2_WORLD, "35", "JO"},
{REGION_ETSI3_WORLD, "36", "CY"},
{REGION_ETSI4_WORLD, "30", "AM"},
{REGION_ETSI4_ETSIC, "38", NULL}, /* NOT SUPPORT */
{REGION_ETSI5_WORLD, "39", NULL},
{REGION_ETSI6_WORLD, "34", NULL},
{REGION_ETSI8_WORLD, "3d", "RU"},
{REGION_ETSI9_WORLD, "3e", "UA"},
{REGION_ETSI_RESERVED, "33", NULL}, /* NOT SUPPORT */
{REGION_FRANCE_RES, "31", NULL},
{REGION_APL6_WORLD, "5b", "BH"},
{REGION_APL4_WORLD, "42", "MA"},
{REGION_APL3_FCCA, "50", NULL},
{REGION_APL_RESERVED, "44", NULL}, /* NOT SUPPORT */
{REGION_APL2_WORLD, "45", "ID"},
{REGION_APL2_APLC, "46", NULL}, /* NOT SUPPORT */
{REGION_APL3_WORLD, "47", NULL},
{REGION_APL2_APLD, "49", "KR"},
{REGION_APL2_FCCA, "4d", NULL},
{REGION_APL1_WORLD, "52", "CN"},
{REGION_APL1_FCCA, "53", NULL}, /* NOT SUPPORT */
{REGION_APL1_ETSIC, "55", "BZ"},
{REGION_APL2_ETSIC, "56", NULL},
{REGION_APL5_WORLD, "58", NULL},
{REGION_APL7_FCCA, "5c", "TW"},
{REGION_APL8_WORLD, "5d", NULL},
{REGION_APL9_WORLD, "5e", "KP"},
{REGION_APL10_WORLD, "5f", "KR"},
{REGION_MKK5_MKKA, "99", NULL},
{REGION_MKK5_FCCA, "9a", NULL},
{REGION_MKK5_MKKC, "88", "JP"},
{REGION_MKK11_MKKA, "d4", NULL},
{REGION_MKK11_FCCA, "d5", NULL},
{REGION_MKK11_MKKC, "d7", NULL},
{REGION_WOR0_WORLD, "60", "00"},
{REGION_WOR1_WORLD, "61", "00"},
{REGION_WOR2_WORLD, "62", "00"},
{REGION_WOR3_WORLD, "63", "00"},
{REGION_WOR4_WORLD, "64", "00"},
{REGION_WOR5_ETSIC, "65", "00"},
{REGION_WOR01_WORLD, "66", "00"},
{REGION_WOR02_WORLD, "67", "00"},
{REGION_EU1_WORLD, "68", "00"},
{REGION_WOR9_WORLD, "69", "00"},
{REGION_WORA_WORLD, "6a", "00"}, /* Default region code */
{REGION_WORB_WORLD, "6b", "00"},
{REGION_WORC_WORLD, "6c", "00"},
/* keep last */
{NULL_REG_CODE, NULL},
};
static inline bool __is_ht40_not_allowed(struct ieee80211_channel *chan)
{
if (!chan)
return true;
/* HT40 is not allowed in CH12, CH13 and CH14. */
if ((chan->center_freq == 2467) ||
(chan->center_freq == 2472) ||
(chan->center_freq == 2484))
return true;
if (chan->flags & IEEE80211_CHAN_DISABLED)
return true;
if (IEEE80211_CHAN_NO_HT40 == (chan->flags & (IEEE80211_CHAN_NO_HT40)))
return true;
return false;
}
static void _reg_process_chan(struct ieee80211_supported_band *sband,
int chan_idx)
{
struct ieee80211_channel *channel;
struct ieee80211_channel *channel_before = NULL, *channel_after = NULL;
unsigned int i;
u16 start_freq = 0;
channel = &sband->channels[chan_idx];
if (__is_ht40_not_allowed(channel)) {
channel->flags |= IEEE80211_CHAN_NO_HT40;
return;
}
for (i = 0; i < sband->n_channels; i++) {
struct ieee80211_channel *c = &sband->channels[i];
if (c->center_freq == (channel->center_freq - 20))
channel_before = c;
if (c->center_freq == (channel->center_freq + 20))
channel_after = c;
}
/* Only update it the channel still not yet marked as HT40+/HT40-.*/
if (channel->center_freq < 4000) {
if (!(channel->flags & IEEE80211_CHAN_NO_HT40MINUS)) {
if (__is_ht40_not_allowed(channel_before))
channel->flags |= IEEE80211_CHAN_NO_HT40MINUS;
else
channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
}
if (!(channel->flags & IEEE80211_CHAN_NO_HT40PLUS)) {
if (__is_ht40_not_allowed(channel_after))
channel->flags |= IEEE80211_CHAN_NO_HT40PLUS;
else
channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
}
} else { /* No overlap HT40 in 5G. */
/*
* Don't care 5170(CH34) - 5230(CH46) because no HT40
* channel in it.
*/
if (channel->center_freq >= 5745)
start_freq = 5745; /* Upper U-NII */
else
start_freq = 5180;
if (((channel->center_freq - start_freq) % 40) == 0) {
/* HT40+ only channel */
channel->flags |= IEEE80211_CHAN_NO_HT40MINUS;
if (!(channel->flags & IEEE80211_CHAN_NO_HT40PLUS)) {
if (__is_ht40_not_allowed(channel_after))
channel->flags |=
IEEE80211_CHAN_NO_HT40PLUS;
else
channel->flags &=
~IEEE80211_CHAN_NO_HT40PLUS;
}
} else {
/* HT40- only channel */
channel->flags |= IEEE80211_CHAN_NO_HT40PLUS;
if (!(channel->flags & IEEE80211_CHAN_NO_HT40MINUS)) {
if (__is_ht40_not_allowed(channel_before))
channel->flags |=
IEEE80211_CHAN_NO_HT40MINUS;
else
channel->flags &=
~IEEE80211_CHAN_NO_HT40MINUS;
}
}
}
return;
}
static void ath6kl_reg_chan_flags_update(struct reg_info *reg)
{
struct wiphy *wiphy = reg->wiphy;
struct ieee80211_supported_band *sband;
enum ieee80211_band band;
int i;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (wiphy->bands[band]) {
sband = wiphy->bands[band];
for (i = 0; i < sband->n_channels; i++)
_reg_process_chan(sband, i);
}
}
return;
}
static const char *_reg_find_iso_name(u16 reg_code,
bool isCountry,
bool reg2Ctry)
{
const struct reg_code_to_isoname *name;
if (isCountry)
reg2Ctry = false;
if (isCountry)
name = &ath6kl_country_code_to_iso_name[0];
else
name = &ath6kl_region_code_to_name[0];
while (name) {
if (name->reg_code == NULL_REG_CODE)
break;
if ((name->reg_code == reg_code) &&
(name->iso_name)) {
if (reg2Ctry)
return name->reg_to_ctry_iso_name;
else
return name->iso_name;
}
name++;
}
ath6kl_err("reg iosname search fail! code is 0x%x\n", reg_code);
return NULL;
}
static struct ieee80211_regdomain *_reg_find_regd(u16 code,
bool isCountry)
{
struct ieee80211_regdomain *regd;
struct ieee80211_regdomain **reg_regdb;
const char *alpha2 = _reg_find_iso_name(code, isCountry, false);
if (alpha2 == NULL)
return NULL;
if (isCountry)
reg_regdb = (struct ieee80211_regdomain **)
ath6kl_reg_regdb_country;
else
reg_regdb = (struct ieee80211_regdomain **)
ath6kl_reg_regdb_region;
while (*reg_regdb) {
regd = *reg_regdb;
if ((regd->alpha2[0] == alpha2[0]) &&
(regd->alpha2[1] == alpha2[1]))
return regd;
reg_regdb++;
}
ath6kl_err("reg regd search fail! code is 0x%x\n", code);
return NULL;
}
static struct ieee80211_regdomain *ath6kl_reg_get_regd(struct reg_info *reg,
u32 reg_code)
{
struct ieee80211_regdomain *regd = NULL;
u16 code, code_type;
/*
* If it's a country code and search country code list first,
* then region domain list. And, assume it must be a valid code.
* If return is NULL and back to use the default's.
*/
code = (u16)(reg_code & ATH6KL_REG_CODE_MASK);
code_type = (u16)(reg_code >> ATH6KL_COUNTRY_RD_SHIFT);
if (code_type & ATH6KL_COUNTRY_ERD_FLAG)
regd = _reg_find_regd(code, true);
else
regd = _reg_find_regd(code, false);
if (regd == NULL) {
regd = &ath6kl_regd_NA;
ath6kl_err("reg get regd fail, using default NA.\n");
}
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg code 0x%0x%s, %sCode, WWR %s --> %c%c, %d rules\n",
reg_code,
(reg ? "" : " from user"),
(code_type & ATH6KL_COUNTRY_ERD_FLAG) ?
"Country" : "Region",
(code_type & ATH6KL_WORLDWIDE_ROAMING_FLAG) ?
"ON" : "OFF",
regd->alpha2[0], regd->alpha2[1],
regd->n_reg_rules);
return regd;
}
static int __reg_freq_reg_info_regd(u32 center_freq,
u32 desired_bw_khz,
const struct ieee80211_reg_rule **reg_rule,
const struct ieee80211_regdomain *custom_regd,
bool *is_freq_start,
bool *is_freq_end)
{
#define ONE_GHZ_IN_KHZ 1000000
int i;
bool band_rule_found = false;
bool bw_fits = false;
u32 start_freq_khz, end_freq_khz;
if (!desired_bw_khz)
desired_bw_khz = MHZ_TO_KHZ(20);
if (!custom_regd)
return -EINVAL;
for (i = 0; i < custom_regd->n_reg_rules; i++) {
const struct ieee80211_reg_rule *rr;
const struct ieee80211_freq_range *fr = NULL;
rr = &custom_regd->reg_rules[i];
fr = &rr->freq_range;
if (!band_rule_found) {
if (abs(center_freq - fr->start_freq_khz) <=
(2 * ONE_GHZ_IN_KHZ))
band_rule_found = true;
if (abs(center_freq - fr->end_freq_khz) <=
(2 * ONE_GHZ_IN_KHZ))
band_rule_found = true;
}
start_freq_khz = center_freq - (desired_bw_khz/2);
end_freq_khz = center_freq + (desired_bw_khz/2);
if (band_rule_found &&
fr->start_freq_khz > MHZ_TO_KHZ(4000) &&
start_freq_khz >= fr->start_freq_khz &&
end_freq_khz <= fr->end_freq_khz &&
((center_freq - fr->start_freq_khz) % MHZ_TO_KHZ(20)) == 0)
return -ERANGE;
if (start_freq_khz >= fr->start_freq_khz &&
end_freq_khz <= fr->end_freq_khz)
bw_fits = true;
else
bw_fits = false;
if (band_rule_found && bw_fits) {
if (center_freq > MHZ_TO_KHZ(4000)) {
if (start_freq_khz == fr->start_freq_khz)
*is_freq_start = true;
if (end_freq_khz == fr->end_freq_khz)
*is_freq_end = true;
}
*reg_rule = rr;
return 0;
}
}
if (!band_rule_found)
return -ERANGE;
return -EINVAL;
#undef ONE_GHZ_IN_KHZ
}
static void _reg_handle_channel(struct ieee80211_channel *chan,
const struct ieee80211_regdomain *regd)
{
int r;
u32 desired_bw_khz = MHZ_TO_KHZ(20);
u32 bw_flags = 0;
u32 channel_flags = 0;
const struct ieee80211_reg_rule *reg_rule = NULL;
const struct ieee80211_power_rule *power_rule = NULL;
const struct ieee80211_freq_range *freq_range = NULL;
bool is_freq_start = false, is_freq_end = false;
r = __reg_freq_reg_info_regd(MHZ_TO_KHZ(chan->center_freq),
desired_bw_khz,
&reg_rule,
regd,
&is_freq_start,
&is_freq_end);
if (r) {
chan->flags =
chan->orig_flags = IEEE80211_CHAN_DISABLED;
return;
}
power_rule = &reg_rule->power_rule;
freq_range = &reg_rule->freq_range;
if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40))
bw_flags = IEEE80211_CHAN_NO_HT40;
else {
/*
* A hint to let _reg_process_chan() know that this channel
* is a boundry channel and HT40+/HT40- already known.
*/
if (is_freq_start)
bw_flags |= IEEE80211_CHAN_NO_HT40MINUS;
if (is_freq_end)
bw_flags |= IEEE80211_CHAN_NO_HT40PLUS;
}
if (reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)
channel_flags |= IEEE80211_CHAN_PASSIVE_SCAN;
if (reg_rule->flags & NL80211_RRF_NO_IBSS)
channel_flags |= IEEE80211_CHAN_NO_IBSS;
if (reg_rule->flags & NL80211_RRF_DFS)
channel_flags |= IEEE80211_CHAN_RADAR;
chan->flags = (channel_flags | bw_flags);
chan->orig_flags = chan->flags;
chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain);
chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp);
return;
}
static void ath6kl_reg_apply_regulatory(struct reg_info *reg,
const struct ieee80211_regdomain *regd)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
enum ieee80211_band band;
int i;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!reg->wiphy->bands[band])
continue;
sband = reg->wiphy->bands[band];
for (i = 0; i < sband->n_channels; i++) {
chan = &sband->channels[i];
_reg_handle_channel(chan, regd);
/*
* If this channel is P2P allowed and not marked
* as PASSIVE/IBSS to let wpa_supplicant use it.
*/
if ((reg->flags & ATH6KL_REG_FALGS_P2P_IN_PASV_CHAN) &&
(!(chan->flags & IEEE80211_CHAN_RADAR)) &&
ath6kl_p2p_is_p2p_channel(chan->center_freq)) {
chan->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
chan->flags &= ~IEEE80211_CHAN_NO_IBSS;
}
}
}
}
static void _reg_update_report(struct wiphy *wiphy, const char *alpha2)
{
char remap_alpha2[2];
static u32 flip;
#ifdef CONFIG_ATH6KL_REGDB_AS_CFG80211_REGDB
/*
* If cfg80211-internal-regdb uses our regdb.c and just pass
* our alpha2 code to cfg80211.
*/
remap_alpha2[0] = alpha2[0];
remap_alpha2[1] = alpha2[1];
#else
/*
* HACK: Here just kick the different alpha2 to force to trigger
* regdb update to user.
*/
if (flip++ & 0x1) {
remap_alpha2[0] = 'U';
remap_alpha2[1] = 'S';
} else {
remap_alpha2[0] = '0';
remap_alpha2[1] = '0';
}
#endif
/* Update to cfg80211 or CRDA */
regulatory_hint(wiphy, remap_alpha2);
return;
}
static struct ieee80211_regdomain *ath6kl_reg_update(struct reg_info *reg,
u32 reg_code,
bool target_update)
{
struct ieee80211_regdomain *regd;
BUG_ON(!reg);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg update reg_code %x %sfrom target\n",
reg_code,
target_update ? "" : "not ");
/* Query the local regulatory database from alpha2 words. */
regd = ath6kl_reg_get_regd(reg, reg_code);
/* HACK: Fetch local regulatory database to support channel list. */
ath6kl_reg_apply_regulatory(reg, regd);
/* Update the channel flags. */
ath6kl_reg_chan_flags_update(reg);
if (target_update && regd)
_reg_update_report(reg->wiphy, regd->alpha2);
/* Notify to update the channel record. */
ath6kl_p2p_rc_fetch_chan(reg->ar);
return regd;
}
static void ath6kl_reg_cfg80211_update(struct reg_info *reg,
u32 reg_code,
bool target_update)
{
u16 code;
const char *iso_name;
char alpha2[2];
BUG_ON(!reg);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg cfg80211_update reg_code %x %sfrom target\n",
reg_code,
target_update ? "" : "not ");
code = (u16)(reg_code & ATH6KL_REG_CODE_MASK);
if ((reg_code >> ATH6KL_COUNTRY_RD_SHIFT) &
ATH6KL_COUNTRY_ERD_FLAG)
iso_name = _reg_find_iso_name(reg_code, true, false);
else
iso_name = _reg_find_iso_name(reg_code, false, true);
if (iso_name) {
alpha2[0] = iso_name[0];
alpha2[1] = iso_name[1];
ath6kl_dbg(ATH6KL_DBG_REGDB,
"Alpha2 string being used: %c%c\n",
alpha2[0], alpha2[1]);
/* Update to cfg80211 & CRDA */
regulatory_hint(reg->wiphy, alpha2);
}
/* Notify to update the channel record. */
ath6kl_p2p_rc_fetch_chan(reg->ar);
return;
}
static int _reg_cfg80211_notify(struct wiphy *wiphy,
struct regulatory_request *request)
{
char initiatorString[4][16] = {
"driver",
"core",
"user",
"country-ie",
};
struct ath6kl *ar = wiphy_priv(wiphy);
int ret = 0;
ath6kl_dbg(ATH6KL_DBG_REGDB,
"cfg cfg80211_notify %c%c%s%s initiator %s\n",
request->alpha2[0], request->alpha2[1],
request->intersect ? " intersect" : "",
request->processed ? " processed" : "",
initiatorString[request->initiator]);
ret = ath6kl_reg_set_country(ar, request->alpha2);
return ret;
}
static int _reg_notifier(struct wiphy *wiphy,
struct regulatory_request *request)
{
char initiatorString[4][16] = {
"driver",
"core",
"user",
"country-ie",
};
struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
struct reg_info *reg = ar->reg_ctx;
struct ieee80211_regdomain *regd = NULL;
switch (request->initiator) {
case NL80211_REGDOM_SET_BY_DRIVER:
case NL80211_REGDOM_SET_BY_CORE:
case NL80211_REGDOM_SET_BY_USER:
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg notify by %s %c%c\n",
initiatorString[request->initiator],
request->alpha2[0],
request->alpha2[1]);
/* HACK: always use ours */
regd = ath6kl_reg_update(reg, reg->current_reg_code, false);
if (regd != reg->current_regd) {
ath6kl_err("reg notifier fail, %x %p %p\n",
reg->current_reg_code,
reg->current_regd,
regd);
WARN_ON(1);
}
break;
}
return 0;
}
int ath6kl_reg_notifier(struct wiphy *wiphy,
struct regulatory_request *request)
{
struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
struct reg_info *reg = ar->reg_ctx;
if (reg == NULL)
return 0;
if (reg->flags & ATH6KL_REG_FALGS_INTERNAL_REGDB)
_reg_notifier(wiphy, request);
else if (reg->flags & ATH6KL_REG_FALGS_CFG80211_REGDB)
_reg_cfg80211_notify(wiphy, request);
return 0;
}
void ath6kl_reg_notifier2(struct wiphy *wiphy,
struct regulatory_request *request)
{
ath6kl_reg_notifier(wiphy, request);
return;
}
int ath6kl_reg_target_notify(struct ath6kl *ar, u32 reg_code)
{
struct reg_info *reg = ar->reg_ctx;
struct ieee80211_regdomain *regd = NULL;
BUG_ON(!reg);
if ((reg_code & ATH6KL_REG_CODE_MASK) == NULL_REG_CODE) {
ath6kl_err("reg unknown code 0x%x, ignore it\n", reg_code);
/* Looks set country was rejected by the target. */
if (((reg->flags & ATH6KL_REG_FALGS_INTERNAL_REGDB) ||
(reg->flags & ATH6KL_REG_FALGS_CFG80211_REGDB)) &&
test_bit(REG_COUNTRY_UPDATE, &ar->flag)) {
clear_bit(REG_COUNTRY_UPDATE, &ar->flag);
wake_up(&ar->event_wq);
}
return -EINVAL;
}
if (reg->flags & ATH6KL_REG_FALGS_INTERNAL_REGDB)
regd = ath6kl_reg_update(reg, reg_code, true);
else if (reg->flags & ATH6KL_REG_FALGS_CFG80211_REGDB)
ath6kl_reg_cfg80211_update(reg, reg_code, true);
else {
u16 code;
const char *iso_name;
char alpha2[2];
code = (u16)(reg_code & ATH6KL_REG_CODE_MASK);
if ((reg_code >> ATH6KL_COUNTRY_RD_SHIFT) &
ATH6KL_COUNTRY_ERD_FLAG)
iso_name = _reg_find_iso_name(reg_code, true, false);
else
iso_name = _reg_find_iso_name(reg_code, false, true);
if (iso_name) {
alpha2[0] = iso_name[0];
alpha2[1] = iso_name[1];
ath6kl_dbg(ATH6KL_DBG_REGDB,
"Country alpha2 being used: %c%c\n",
alpha2[0], alpha2[1]);
/* Update to cfg80211 & CRDA */
regulatory_hint(ar->wiphy, alpha2);
}
}
/* Cache the latest regulatory */
reg->current_regd = regd;
reg->current_reg_code = reg_code;
return 0;
}
bool ath6kl_reg_is_init_done(struct ath6kl *ar)
{
struct reg_info *reg = ar->reg_ctx;
if (!((reg->current_reg_code >> ATH6KL_COUNTRY_RD_SHIFT) &
ATH6KL_WORLDWIDE_ROAMING_FLAG))
return true;
else
return false;
}
bool ath6kl_reg_is_p2p_channel(struct ath6kl *ar, u32 freq)
{
#define _REG_CHAN_P2P_NOT_ALLOWED ( \
IEEE80211_CHAN_RADAR | \
IEEE80211_CHAN_PASSIVE_SCAN | \
IEEE80211_CHAN_NO_IBSS)
if (ath6kl_p2p_is_p2p_channel(freq)) {
struct wiphy *wiphy = ar->wiphy;
enum ieee80211_band band = NL80211_BAND_2GHZ;
struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
int i;
if (freq > 4000)
band = NL80211_BAND_5GHZ;
sband = wiphy->bands[band];
for (i = 0; i < sband->n_channels; i++) {
chan = &sband->channels[i];
if (chan->center_freq == freq) {
if (chan->flags & _REG_CHAN_P2P_NOT_ALLOWED)
return false;
else
return true;
}
}
return false;
} else
return false;
#undef _REG_CHAN_P2P_NOT_ALLOWED
}
bool ath6kl_reg_is_dfs_channel(struct ath6kl *ar, u32 freq)
{
struct wiphy *wiphy = ar->wiphy;
struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
int i;
if (freq < 4000)
return false;
sband = wiphy->bands[NL80211_BAND_5GHZ];
for (i = 0; i < sband->n_channels; i++) {
chan = &sband->channels[i];
if (chan->center_freq == freq) {
if (chan->flags & IEEE80211_CHAN_RADAR)
return true;
else
return false;
}
}
return false;
}
bool ath6kl_reg_is_lte_channel(struct ath6kl *ar, u32 freq)
{
#define _LTE_BAND7_START_FREQ (2457) /* Not used after Ch10 */
/*
* FDD LTE band 7 uplink (2500Mhz ~ 2570MHz)
* TDD LTE band 40 (2300Mhz ~ 2400MHz)
*/
if (freq >= _LTE_BAND7_START_FREQ)
return true;
else
return false;
#undef _LTE_BAND7_START_FREQ
}
struct reg_info *ath6kl_reg_init(struct ath6kl *ar,
bool intRegdb,
bool cfgRegdb,
bool p2pInPasvCh)
{
struct reg_info *reg;
reg = kzalloc(sizeof(struct reg_info), GFP_KERNEL);
if (!reg) {
ath6kl_err("failed to alloc memory for reg\n");
return NULL;
}
BUG_ON((intRegdb && cfgRegdb));
reg->ar = ar;
reg->wiphy = ar->wiphy;
if (intRegdb) {
reg->flags |= ATH6KL_REG_FALGS_INTERNAL_REGDB;
if (p2pInPasvCh)
reg->flags |= ATH6KL_REG_FALGS_P2P_IN_PASV_CHAN;
ath6kl_info("Using driver's regdb%s.\n",
(p2pInPasvCh ? " & p2p-in-passive-chan" : ""));
} else if (cfgRegdb) {
reg->flags |= ATH6KL_REG_FALGS_CFG80211_REGDB;
ath6kl_info("Using cfg80211's regdb.\n");
}
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg init flags %x\n",
reg->flags);
return reg;
}
void ath6kl_reg_deinit(struct ath6kl *ar)
{
kfree(ar->reg_ctx);
ar->reg_ctx = NULL;
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg deinit");
return;
}
static bool _reg_dump_country_ie(u8 *ies, int ies_len, u8 *alpha2)
{
u8 *pos;
bool found = false;
pos = ies;
if (ies && ies_len) {
while (pos + 1 < ies + ies_len) {
if (pos + 2 + pos[1] > ies + ies_len)
break;
if (pos[0] == WLAN_EID_COUNTRY) {
found = true;
memcpy(alpha2, (pos + 2), 2);
break;
}
pos += 2 + pos[1];
}
}
return found;
}
void ath6kl_reg_bss_info(struct ath6kl *ar,
struct ieee80211_mgmt *mgmt,
int len,
u8 snr,
struct ieee80211_channel *channel)
{
if (!ath6kl_reg_is_init_done(ar)) {
char alpha[2];
bool found = false;
if ((mgmt->frame_control == IEEE80211_STYPE_BEACON) ||
(mgmt->frame_control == IEEE80211_STYPE_PROBE_RESP))
found = _reg_dump_country_ie(mgmt->u.beacon.variable,
(len - 36),
(u8 *)alpha);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg bssinfo BSSID %02x:%02x:%02x:%02x:%02x:%02x "
"fc %02x freq %d snr %3d %c%c\n",
mgmt->bssid[0], mgmt->bssid[1], mgmt->bssid[2],
mgmt->bssid[3], mgmt->bssid[4], mgmt->bssid[5],
mgmt->frame_control,
(channel ? channel->center_freq : 0),
snr,
(found ? alpha[0] : ' '),
(found ? alpha[1] : ' '));
}
return;
}
static void _reg_set_country(struct ath6kl *ar)
{
struct ath6kl_vif *vif;
/* These 11 channels are always active channel */
u16 ch_list[11] = {2412, 2417, 2422, 2427,
2432, 2437, 2442, 2447,
2452, 2457, 2462};
bool scan_on_going = false;
int i;
/* Any scan on-going? */
for (i = 0; i < ar->vif_max; i++) {
vif = ath6kl_get_vif_by_index(ar, i);
if (vif && vif->scan_req)
scan_on_going = true;
}
/* Start a quick scan to kick it works */
if (scan_on_going == false)
ath6kl_wmi_startscan_cmd(ar->wmi,
0, WMI_LONG_SCAN,
true, false, 0, 0,
11,
ch_list);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg set country done, scan_on_going %d\n",
scan_on_going);
return;
}
int ath6kl_reg_set_country(struct ath6kl *ar, char *isoName)
{
#define WAIT_REG_RESULT (HZ / 5) /* 200 ms. */
struct ath6kl_vif *vif;
struct reg_info *reg = ar->reg_ctx;
long left;
int i;
BUG_ON(!reg);
if (!(reg->flags & (ATH6KL_REG_FALGS_INTERNAL_REGDB |
ATH6KL_REG_FALGS_CFG80211_REGDB)))
return -EPERM;
for (i = 0; i < ar->vif_max; i++) {
vif = ath6kl_get_vif_by_index(ar, i);
if ((vif) &&
(test_bit(CONNECTED, &vif->flags) ||
test_bit(CONNECT_PEND, &vif->flags))) {
ath6kl_err("reg not allow to change now\n");
return -EPERM;
}
}
if (down_interruptible(&ar->sem))
return -EBUSY;
set_bit(REG_COUNTRY_UPDATE, &ar->flag);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg set country %c%c\n",
isoName[0], isoName[1]);
if (ath6kl_wmi_set_regdomain_cmd(ar->wmi, isoName)) {
clear_bit(REG_COUNTRY_UPDATE, &ar->flag);
up(&ar->sem);
return -EIO;
}
left = wait_event_interruptible_timeout(ar->event_wq,
!test_bit(REG_COUNTRY_UPDATE,
&ar->flag),
WAIT_REG_RESULT);
up(&ar->sem);
if (test_bit(REG_COUNTRY_UPDATE, &ar->flag)) {
clear_bit(REG_COUNTRY_UPDATE, &ar->flag);
_reg_set_country(ar);
} else {
ath6kl_err("reg set country failed\n");
return -EINVAL;
}
return 0;
#undef WAIT_REG_RESULT
}
#define AR6004_BOARD_DATA_ADDR 0x00400854
#define AR6004_BOARD_DATA_OFFSET 4
#define AR6004_RD_OFFSET 20
#define AR6006_BOARD_DATA_ADDR 0x00428854
#define AR6006_BOARD_DATA_OFFSET 4
#define AR6006_RD_OFFSET 20
static void _reg_remap_rdcode(unsigned short *rdcode_used)
{
unsigned short country_code_ori, country_code_remap;
/*
* If the customer want to change the channel-set
* for some country and target channel-set already
* exist in certain country and here provide a possible
* recode re-map to avoid firmware patch.
*
* WARN: You moust know what you want to do when insert
* any code to this function.
*/
country_code_ori = *rdcode_used;
/* Only support Country-Code w/o WWR remap */
if ((country_code_ori & ATH6KL_COUNTRY_ERD_FLAG) &&
!(country_code_ori & ATH6KL_WORLDWIDE_ROAMING_FLAG)) {
country_code_ori &= ~(ATH6KL_COUNTRY_ERD_FLAG |
ATH6KL_WORLDWIDE_ROAMING_FLAG);
country_code_remap = country_code_ori;
/* TODO : remap country code here */
if (country_code_ori == COUNTRY_CHINA) {
/* China allow 5150-5350 after 2013/01/31. */
country_code_remap = COUNTRY_INDIA;
}
if (country_code_ori != country_code_remap) {
*rdcode_used = (ATH6KL_COUNTRY_ERD_FLAG |
country_code_remap);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg remap from 0x%x to 0x%x, use 0x%x\n",
country_code_ori,
country_code_remap,
*rdcode_used);
}
}
return;
}
int ath6kl_reg_set_rdcode(struct ath6kl *ar,
unsigned short rdcode,
unsigned short *rdcode_used)
{
u8 buf[32];
u16 o_sum, o_ver, o_rd, o_rd_next;
u32 n_rd, n_sum;
u32 bd_addr = 0;
int ret;
u32 rd_offset, bd_offset;
struct ieee80211_regdomain *regd;
u32 reg_code;
if (rdcode == NULL_REG_CODE)
return -EINVAL;
*rdcode_used = NULL_REG_CODE;
/* check the rdcode is valid or not */
reg_code = ((rdcode & 0xf000) << 16) | (rdcode & 0x0fff);
regd = ath6kl_reg_get_regd(NULL, reg_code);
if (regd == &ath6kl_regd_NA) {
ath6kl_err("Non-support code 0x%x, use tgt default code\n",
rdcode);
return 0;
} else {
/* update final used rdcode */
*rdcode_used = rdcode;
/* Remap the rdcode only if internal-regdb support */
if ((ar->reg_ctx) &&
(ar->reg_ctx->flags & ATH6KL_REG_FALGS_INTERNAL_REGDB))
_reg_remap_rdcode(rdcode_used);
}
switch (ar->target_type) {
case TARGET_TYPE_AR6004:
rd_offset = AR6004_RD_OFFSET;
bd_offset = AR6004_BOARD_DATA_OFFSET;
ret = ath6kl_bmi_read(ar,
AR6004_BOARD_DATA_ADDR,
(u8 *)&bd_addr,
4);
break;
case TARGET_TYPE_AR6006:
rd_offset = AR6006_RD_OFFSET;
bd_offset = AR6006_BOARD_DATA_OFFSET;
ret = ath6kl_bmi_read(ar,
AR6006_BOARD_DATA_ADDR,
(u8 *)&bd_addr,
4);
break;
default:
ath6kl_err("No support rdcode overwrite! target_type %d\n",
ar->target_type);
return -EOPNOTSUPP;
}
if (ret)
return ret;
memset(buf, 0, sizeof(buf));
ret = ath6kl_bmi_read(ar, bd_addr, buf, sizeof(buf));
if (ret)
return ret;
memcpy((u8 *)&o_sum, buf + bd_offset, 2);
memcpy((u8 *)&o_ver, buf + bd_offset + 2, 2);
memcpy((u8 *)&o_rd, buf + rd_offset, 2);
memcpy((u8 *)&o_rd_next, buf + rd_offset + 2, 2);
ath6kl_dbg(ATH6KL_DBG_REGDB,
"reg set rdcode/used 0x%x/0x%x ver 0x%x ori 0x%x-%x\n",
rdcode,
(*rdcode_used),
o_ver,
o_rd_next,
o_rd);
n_rd = (o_rd_next << 16) + (*rdcode_used);
ret = ath6kl_bmi_write(ar,
bd_addr + rd_offset,
(u8 *)&n_rd,
4);
if (ret)
return ret;
n_sum = (o_ver << 16) + (o_sum ^ o_rd ^ (*rdcode_used));
ret = ath6kl_bmi_write(ar,
bd_addr + bd_offset,
(u8 *)&n_sum,
4);
return ret;
}
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