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OpenCloudOS-Kernel/drivers/net/wireless/ath9k/regd.c

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/*
* 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"
static int ath9k_regd_chansort(const void *a, const void *b)
{
const struct ath9k_channel *ca = a;
const struct ath9k_channel *cb = b;
return (ca->channel == cb->channel) ?
(ca->channelFlags & CHAN_FLAGS) -
(cb->channelFlags & CHAN_FLAGS) : ca->channel - cb->channel;
}
static void
ath9k_regd_sort(void *a, u32 n, u32 size, ath_hal_cmp_t *cmp)
{
u8 *aa = a;
u8 *ai, *t;
for (ai = aa + size; --n >= 1; ai += size)
for (t = ai; t > aa; t -= size) {
u8 *u = t - size;
if (cmp(u, t) <= 0)
break;
swap(u, t, size);
}
}
static u16 ath9k_regd_get_eepromRD(struct ath_hal *ah)
{
return ah->ah_currentRD & ~WORLDWIDE_ROAMING_FLAG;
}
static bool ath9k_regd_is_chan_bm_zero(u64 *bitmask)
{
int i;
for (i = 0; i < BMLEN; i++) {
if (bitmask[i] != 0)
return false;
}
return true;
}
static bool ath9k_regd_is_eeprom_valid(struct ath_hal *ah)
{
u16 rd = ath9k_regd_get_eepromRD(ah);
int i;
if (rd & COUNTRY_ERD_FLAG) {
u16 cc = rd & ~COUNTRY_ERD_FLAG;
for (i = 0; i < ARRAY_SIZE(allCountries); i++)
if (allCountries[i].countryCode == cc)
return true;
} else {
for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
if (regDomainPairs[i].regDmnEnum == rd)
return true;
}
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: invalid regulatory domain/country code 0x%x\n",
__func__, rd);
return false;
}
static bool ath9k_regd_is_fcc_midband_supported(struct ath_hal *ah)
{
u32 regcap;
regcap = ah->ah_caps.reg_cap;
if (regcap & AR_EEPROM_EEREGCAP_EN_FCC_MIDBAND)
return true;
else
return false;
}
static bool ath9k_regd_is_ccode_valid(struct ath_hal *ah,
u16 cc)
{
u16 rd;
int i;
if (cc == CTRY_DEFAULT)
return true;
if (cc == CTRY_DEBUG)
return true;
rd = ath9k_regd_get_eepromRD(ah);
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY, "%s: EEPROM regdomain 0x%x\n",
__func__, rd);
if (rd & COUNTRY_ERD_FLAG) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: EEPROM setting is country code %u\n",
__func__, rd & ~COUNTRY_ERD_FLAG);
return cc == (rd & ~COUNTRY_ERD_FLAG);
}
for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
if (cc == allCountries[i].countryCode) {
#ifdef AH_SUPPORT_11D
if ((rd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX)
return true;
#endif
if (allCountries[i].regDmnEnum == rd ||
rd == DEBUG_REG_DMN || rd == NO_ENUMRD)
return true;
}
}
return false;
}
static void
ath9k_regd_get_wmodes_nreg(struct ath_hal *ah,
struct country_code_to_enum_rd *country,
struct regDomain *rd5GHz,
unsigned long *modes_allowed)
{
bitmap_copy(modes_allowed, ah->ah_caps.wireless_modes, ATH9K_MODE_MAX);
if (test_bit(ATH9K_MODE_11G, ah->ah_caps.wireless_modes) &&
(!country->allow11g))
clear_bit(ATH9K_MODE_11G, modes_allowed);
if (test_bit(ATH9K_MODE_11A, ah->ah_caps.wireless_modes) &&
(ath9k_regd_is_chan_bm_zero(rd5GHz->chan11a)))
clear_bit(ATH9K_MODE_11A, modes_allowed);
if (test_bit(ATH9K_MODE_11NG_HT20, ah->ah_caps.wireless_modes)
&& (!country->allow11ng20))
clear_bit(ATH9K_MODE_11NG_HT20, modes_allowed);
if (test_bit(ATH9K_MODE_11NA_HT20, ah->ah_caps.wireless_modes)
&& (!country->allow11na20))
clear_bit(ATH9K_MODE_11NA_HT20, modes_allowed);
if (test_bit(ATH9K_MODE_11NG_HT40PLUS, ah->ah_caps.wireless_modes) &&
(!country->allow11ng40))
clear_bit(ATH9K_MODE_11NG_HT40PLUS, modes_allowed);
if (test_bit(ATH9K_MODE_11NG_HT40MINUS, ah->ah_caps.wireless_modes) &&
(!country->allow11ng40))
clear_bit(ATH9K_MODE_11NG_HT40MINUS, modes_allowed);
if (test_bit(ATH9K_MODE_11NA_HT40PLUS, ah->ah_caps.wireless_modes) &&
(!country->allow11na40))
clear_bit(ATH9K_MODE_11NA_HT40PLUS, modes_allowed);
if (test_bit(ATH9K_MODE_11NA_HT40MINUS, ah->ah_caps.wireless_modes) &&
(!country->allow11na40))
clear_bit(ATH9K_MODE_11NA_HT40MINUS, modes_allowed);
}
bool ath9k_regd_is_public_safety_sku(struct ath_hal *ah)
{
u16 rd;
rd = ath9k_regd_get_eepromRD(ah);
switch (rd) {
case FCC4_FCCA:
case (CTRY_UNITED_STATES_FCC49 | COUNTRY_ERD_FLAG):
return true;
case DEBUG_REG_DMN:
case NO_ENUMRD:
if (ah->ah_countryCode == CTRY_UNITED_STATES_FCC49)
return true;
break;
}
return false;
}
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;
}
static u16 ath9k_regd_get_default_country(struct ath_hal *ah)
{
u16 rd;
int i;
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;
}
for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
if (regDomainPairs[i].regDmnEnum == rd) {
if (regDomainPairs[i].singleCC != 0)
return regDomainPairs[i].singleCC;
else
i = ARRAY_SIZE(regDomainPairs);
}
return CTRY_DEFAULT;
}
static bool ath9k_regd_is_valid_reg_domain(int regDmn,
struct regDomain *rd)
{
int i;
for (i = 0; i < ARRAY_SIZE(regDomains); i++) {
if (regDomains[i].regDmnEnum == regDmn) {
if (rd != NULL) {
memcpy(rd, &regDomains[i],
sizeof(struct regDomain));
}
return true;
}
}
return false;
}
static bool ath9k_regd_is_valid_reg_domainPair(int regDmnPair)
{
int i;
if (regDmnPair == NO_ENUMRD)
return false;
for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) {
if (regDomainPairs[i].regDmnEnum == regDmnPair)
return true;
}
return false;
}
static bool
ath9k_regd_get_wmode_regdomain(struct ath_hal *ah, int regDmn,
u16 channelFlag, struct regDomain *rd)
{
int i, found;
u64 flags = NO_REQ;
struct reg_dmn_pair_mapping *regPair = NULL;
int regOrg;
regOrg = regDmn;
if (regDmn == CTRY_DEFAULT) {
u16 rdnum;
rdnum = ath9k_regd_get_eepromRD(ah);
if (!(rdnum & COUNTRY_ERD_FLAG)) {
if (ath9k_regd_is_valid_reg_domain(rdnum, NULL) ||
ath9k_regd_is_valid_reg_domainPair(rdnum)) {
regDmn = rdnum;
}
}
}
if ((regDmn & MULTI_DOMAIN_MASK) == 0) {
for (i = 0, found = 0;
(i < ARRAY_SIZE(regDomainPairs)) && (!found); i++) {
if (regDomainPairs[i].regDmnEnum == regDmn) {
regPair = &regDomainPairs[i];
found = 1;
}
}
if (!found) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: Failed to find reg domain pair %u\n",
__func__, regDmn);
return false;
}
if (!(channelFlag & CHANNEL_2GHZ)) {
regDmn = regPair->regDmn5GHz;
flags = regPair->flags5GHz;
}
if (channelFlag & CHANNEL_2GHZ) {
regDmn = regPair->regDmn2GHz;
flags = regPair->flags2GHz;
}
}
found = ath9k_regd_is_valid_reg_domain(regDmn, rd);
if (!found) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: Failed to find unitary reg domain %u\n",
__func__, regDmn);
return false;
} else {
rd->pscan &= regPair->pscanMask;
if (((regOrg & MULTI_DOMAIN_MASK) == 0) &&
(flags != NO_REQ)) {
rd->flags = flags;
}
rd->flags &= (channelFlag & CHANNEL_2GHZ) ?
REG_DOMAIN_2GHZ_MASK : REG_DOMAIN_5GHZ_MASK;
return true;
}
}
static bool ath9k_regd_is_bit_set(int bit, u64 *bitmask)
{
int byteOffset, bitnum;
u64 val;
byteOffset = bit / 64;
bitnum = bit - byteOffset * 64;
val = ((u64) 1) << bitnum;
if (bitmask[byteOffset] & val)
return true;
else
return false;
}
static void
ath9k_regd_add_reg_classid(u8 *regclassids, u32 maxregids,
u32 *nregids, u8 regclassid)
{
int i;
if (regclassid == 0)
return;
for (i = 0; i < maxregids; i++) {
if (regclassids[i] == regclassid)
return;
if (regclassids[i] == 0)
break;
}
if (i == maxregids)
return;
else {
regclassids[i] = regclassid;
*nregids += 1;
}
return;
}
static bool
ath9k_regd_get_eeprom_reg_ext_bits(struct ath_hal *ah,
enum reg_ext_bitmap bit)
{
return (ah->ah_currentRDExt & (1 << bit)) ? true : false;
}
#ifdef ATH_NF_PER_CHAN
static void ath9k_regd_init_rf_buffer(struct ath9k_channel *ichans,
int nchans)
{
int i, j, next;
for (next = 0; next < nchans; next++) {
for (i = 0; i < NUM_NF_READINGS; i++) {
ichans[next].nfCalHist[i].currIndex = 0;
ichans[next].nfCalHist[i].privNF =
AR_PHY_CCA_MAX_GOOD_VALUE;
ichans[next].nfCalHist[i].invalidNFcount =
AR_PHY_CCA_FILTERWINDOW_LENGTH;
for (j = 0; j < ATH9K_NF_CAL_HIST_MAX; j++) {
ichans[next].nfCalHist[i].nfCalBuffer[j] =
AR_PHY_CCA_MAX_GOOD_VALUE;
}
}
}
}
#endif
static int ath9k_regd_is_chan_present(struct ath_hal *ah,
u16 c)
{
int i;
for (i = 0; i < 150; i++) {
if (!ah->ah_channels[i].channel)
return -1;
else if (ah->ah_channels[i].channel == c)
return i;
}
return -1;
}
static bool
ath9k_regd_add_channel(struct ath_hal *ah,
u16 c,
u16 c_lo,
u16 c_hi,
u16 maxChan,
u8 ctl,
int pos,
struct regDomain rd5GHz,
struct RegDmnFreqBand *fband,
struct regDomain *rd,
const struct cmode *cm,
struct ath9k_channel *ichans,
bool enableExtendedChannels)
{
struct ath9k_channel *chan;
int ret;
u32 channelFlags = 0;
u8 privFlags = 0;
if (!(c_lo <= c && c <= c_hi)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: c %u out of range [%u..%u]\n",
__func__, c, c_lo, c_hi);
return false;
}
if ((fband->channelBW == CHANNEL_HALF_BW) &&
!(ah->ah_caps.hw_caps & ATH9K_HW_CAP_CHAN_HALFRATE)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: Skipping %u half rate channel\n",
__func__, c);
return false;
}
if ((fband->channelBW == CHANNEL_QUARTER_BW) &&
!(ah->ah_caps.hw_caps & ATH9K_HW_CAP_CHAN_QUARTERRATE)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: Skipping %u quarter rate channel\n",
__func__, c);
return false;
}
if (((c + fband->channelSep) / 2) > (maxChan + HALF_MAXCHANBW)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: c %u > maxChan %u\n",
__func__, c, maxChan);
return false;
}
if ((fband->usePassScan & IS_ECM_CHAN) && !enableExtendedChannels) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"Skipping ecm channel\n");
return false;
}
if ((rd->flags & NO_HOSTAP) && (ah->ah_opmode == ATH9K_M_HOSTAP)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"Skipping HOSTAP channel\n");
return false;
}
if (IS_HT40_MODE(cm->mode) &&
!(ath9k_regd_get_eeprom_reg_ext_bits(ah, REG_EXT_FCC_DFS_HT40)) &&
(fband->useDfs) &&
(rd->conformanceTestLimit != MKK)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"Skipping HT40 channel (en_fcc_dfs_ht40 = 0)\n");
return false;
}
if (IS_HT40_MODE(cm->mode) &&
!(ath9k_regd_get_eeprom_reg_ext_bits(ah,
REG_EXT_JAPAN_NONDFS_HT40)) &&
!(fband->useDfs) && (rd->conformanceTestLimit == MKK)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"Skipping HT40 channel (en_jap_ht40 = 0)\n");
return false;
}
if (IS_HT40_MODE(cm->mode) &&
!(ath9k_regd_get_eeprom_reg_ext_bits(ah, REG_EXT_JAPAN_DFS_HT40)) &&
(fband->useDfs) &&
(rd->conformanceTestLimit == MKK)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"Skipping HT40 channel (en_jap_dfs_ht40 = 0)\n");
return false;
}
/* Calculate channel flags */
channelFlags = cm->flags;
switch (fband->channelBW) {
case CHANNEL_HALF_BW:
channelFlags |= CHANNEL_HALF;
break;
case CHANNEL_QUARTER_BW:
channelFlags |= CHANNEL_QUARTER;
break;
}
if (fband->usePassScan & rd->pscan)
channelFlags |= CHANNEL_PASSIVE;
else
channelFlags &= ~CHANNEL_PASSIVE;
if (fband->useDfs & rd->dfsMask)
privFlags = CHANNEL_DFS;
else
privFlags = 0;
if (rd->flags & LIMIT_FRAME_4MS)
privFlags |= CHANNEL_4MS_LIMIT;
if (privFlags & CHANNEL_DFS)
privFlags |= CHANNEL_DISALLOW_ADHOC;
if (rd->flags & ADHOC_PER_11D)
privFlags |= CHANNEL_PER_11D_ADHOC;
if (channelFlags & CHANNEL_PASSIVE) {
if ((c < 2412) || (c > 2462)) {
if (rd5GHz.regDmnEnum == MKK1 ||
rd5GHz.regDmnEnum == MKK2) {
u32 regcap = ah->ah_caps.reg_cap;
if (!(regcap &
(AR_EEPROM_EEREGCAP_EN_KK_U1_EVEN |
AR_EEPROM_EEREGCAP_EN_KK_U2 |
AR_EEPROM_EEREGCAP_EN_KK_MIDBAND)) &&
isUNII1OddChan(c)) {
channelFlags &= ~CHANNEL_PASSIVE;
} else {
privFlags |= CHANNEL_DISALLOW_ADHOC;
}
} else {
privFlags |= CHANNEL_DISALLOW_ADHOC;
}
}
}
if ((cm->mode == ATH9K_MODE_11A) ||
(cm->mode == ATH9K_MODE_11NA_HT20) ||
(cm->mode == ATH9K_MODE_11NA_HT40PLUS) ||
(cm->mode == ATH9K_MODE_11NA_HT40MINUS)) {
if (rd->flags & (ADHOC_NO_11A | DISALLOW_ADHOC_11A))
privFlags |= CHANNEL_DISALLOW_ADHOC;
}
/* Fill in channel details */
ret = ath9k_regd_is_chan_present(ah, c);
if (ret == -1) {
chan = &ah->ah_channels[pos];
chan->channel = c;
chan->maxRegTxPower = fband->powerDfs;
chan->antennaMax = fband->antennaMax;
chan->regDmnFlags = rd->flags;
chan->maxTxPower = AR5416_MAX_RATE_POWER;
chan->minTxPower = AR5416_MAX_RATE_POWER;
chan->channelFlags = channelFlags;
chan->privFlags = privFlags;
} else {
chan = &ah->ah_channels[ret];
chan->channelFlags |= channelFlags;
chan->privFlags |= privFlags;
}
/* Set CTLs */
if ((cm->flags & CHANNEL_ALL) == CHANNEL_A)
chan->conformanceTestLimit[0] = ctl;
else if ((cm->flags & CHANNEL_ALL) == CHANNEL_B)
chan->conformanceTestLimit[1] = ctl;
else if ((cm->flags & CHANNEL_ALL) == CHANNEL_G)
chan->conformanceTestLimit[2] = ctl;
return (ret == -1) ? true : false;
}
static bool ath9k_regd_japan_check(struct ath_hal *ah,
int b,
struct regDomain *rd5GHz)
{
bool skipband = false;
int i;
u32 regcap;
for (i = 0; i < ARRAY_SIZE(j_bandcheck); i++) {
if (j_bandcheck[i].freqbandbit == b) {
regcap = ah->ah_caps.reg_cap;
if ((j_bandcheck[i].eepromflagtocheck & regcap) == 0) {
skipband = true;
} else if ((regcap & AR_EEPROM_EEREGCAP_EN_KK_U2) ||
(regcap & AR_EEPROM_EEREGCAP_EN_KK_MIDBAND)) {
rd5GHz->dfsMask |= DFS_MKK4;
rd5GHz->pscan |= PSCAN_MKK3;
}
break;
}
}
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: Skipping %d freq band\n",
__func__, j_bandcheck[i].freqbandbit);
return skipband;
}
bool
ath9k_regd_init_channels(struct ath_hal *ah,
u32 maxchans,
u32 *nchans, u8 *regclassids,
u32 maxregids, u32 *nregids, u16 cc,
bool enableOutdoor,
bool enableExtendedChannels)
{
u16 maxChan = 7000;
struct country_code_to_enum_rd *country = NULL;
struct regDomain rd5GHz, rd2GHz;
const struct cmode *cm;
struct ath9k_channel *ichans = &ah->ah_channels[0];
int next = 0, b;
u8 ctl;
int regdmn;
u16 chanSep;
unsigned long *modes_avail;
DECLARE_BITMAP(modes_allowed, ATH9K_MODE_MAX);
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY, "%s: cc %u %s %s\n",
__func__, cc,
enableOutdoor ? "Enable outdoor" : "",
enableExtendedChannels ? "Enable ecm" : "");
if (!ath9k_regd_is_ccode_valid(ah, cc)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: invalid country code %d\n", __func__, cc);
return false;
}
if (!ath9k_regd_is_eeprom_valid(ah)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: invalid EEPROM contents\n", __func__);
return false;
}
ah->ah_countryCode = ath9k_regd_get_default_country(ah);
if (ah->ah_countryCode == CTRY_DEFAULT) {
ah->ah_countryCode = cc & COUNTRY_CODE_MASK;
if ((ah->ah_countryCode == CTRY_DEFAULT) &&
(ath9k_regd_get_eepromRD(ah) == CTRY_DEFAULT)) {
ah->ah_countryCode = CTRY_UNITED_STATES;
}
}
#ifdef AH_SUPPORT_11D
if (ah->ah_countryCode == CTRY_DEFAULT) {
regdmn = ath9k_regd_get_eepromRD(ah);
country = NULL;
} else {
#endif
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 false;
} else {
regdmn = country->regDmnEnum;
#ifdef AH_SUPPORT_11D
if (((ath9k_regd_get_eepromRD(ah) &
WORLD_SKU_MASK) == WORLD_SKU_PREFIX) &&
(cc == CTRY_UNITED_STATES)) {
if (!isWwrSKU_NoMidband(ah)
&& ath9k_regd_is_fcc_midband_supported(ah))
regdmn = FCC3_FCCA;
else
regdmn = FCC1_FCCA;
}
#endif
}
#ifdef AH_SUPPORT_11D
}
#endif
if (!ath9k_regd_get_wmode_regdomain(ah,
regdmn,
~CHANNEL_2GHZ,
&rd5GHz)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: couldn't find unitary "
"5GHz reg domain for country %u\n",
__func__, ah->ah_countryCode);
return false;
}
if (!ath9k_regd_get_wmode_regdomain(ah,
regdmn,
CHANNEL_2GHZ,
&rd2GHz)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: couldn't find unitary 2GHz "
"reg domain for country %u\n",
__func__, ah->ah_countryCode);
return false;
}
if (!isWwrSKU(ah) && ((rd5GHz.regDmnEnum == FCC1) ||
(rd5GHz.regDmnEnum == FCC2))) {
if (ath9k_regd_is_fcc_midband_supported(ah)) {
if (!ath9k_regd_get_wmode_regdomain(ah,
FCC3_FCCA,
~CHANNEL_2GHZ,
&rd5GHz)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: couldn't find unitary 5GHz "
"reg domain for country %u\n",
__func__, ah->ah_countryCode);
return false;
}
}
}
if (country == NULL) {
modes_avail = ah->ah_caps.wireless_modes;
} else {
ath9k_regd_get_wmodes_nreg(ah, country, &rd5GHz, modes_allowed);
modes_avail = modes_allowed;
if (!enableOutdoor)
maxChan = country->outdoorChanStart;
}
next = 0;
if (maxchans > ARRAY_SIZE(ah->ah_channels))
maxchans = ARRAY_SIZE(ah->ah_channels);
for (cm = modes; cm < &modes[ARRAY_SIZE(modes)]; cm++) {
u16 c, c_hi, c_lo;
u64 *channelBM = NULL;
struct regDomain *rd = NULL;
struct RegDmnFreqBand *fband = NULL, *freqs;
int8_t low_adj = 0, hi_adj = 0;
if (!test_bit(cm->mode, modes_avail)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: !avail mode %d flags 0x%x\n",
__func__, cm->mode, cm->flags);
continue;
}
if (!ath9k_get_channel_edges(ah, cm->flags, &c_lo, &c_hi)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: channels 0x%x not supported "
"by hardware\n",
__func__, cm->flags);
continue;
}
switch (cm->mode) {
case ATH9K_MODE_11A:
case ATH9K_MODE_11NA_HT20:
case ATH9K_MODE_11NA_HT40PLUS:
case ATH9K_MODE_11NA_HT40MINUS:
rd = &rd5GHz;
channelBM = rd->chan11a;
freqs = &regDmn5GhzFreq[0];
ctl = rd->conformanceTestLimit;
break;
case ATH9K_MODE_11B:
rd = &rd2GHz;
channelBM = rd->chan11b;
freqs = &regDmn2GhzFreq[0];
ctl = rd->conformanceTestLimit | CTL_11B;
break;
case ATH9K_MODE_11G:
case ATH9K_MODE_11NG_HT20:
case ATH9K_MODE_11NG_HT40PLUS:
case ATH9K_MODE_11NG_HT40MINUS:
rd = &rd2GHz;
channelBM = rd->chan11g;
freqs = &regDmn2Ghz11gFreq[0];
ctl = rd->conformanceTestLimit | CTL_11G;
break;
default:
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: Unknown HAL mode 0x%x\n", __func__,
cm->mode);
continue;
}
if (ath9k_regd_is_chan_bm_zero(channelBM))
continue;
if ((cm->mode == ATH9K_MODE_11NA_HT40PLUS) ||
(cm->mode == ATH9K_MODE_11NG_HT40PLUS)) {
hi_adj = -20;
}
if ((cm->mode == ATH9K_MODE_11NA_HT40MINUS) ||
(cm->mode == ATH9K_MODE_11NG_HT40MINUS)) {
low_adj = 20;
}
/* XXX: Add a helper here instead */
for (b = 0; b < 64 * BMLEN; b++) {
if (ath9k_regd_is_bit_set(b, channelBM)) {
fband = &freqs[b];
if (rd5GHz.regDmnEnum == MKK1
|| rd5GHz.regDmnEnum == MKK2) {
if (ath9k_regd_japan_check(ah,
b,
&rd5GHz))
continue;
}
ath9k_regd_add_reg_classid(regclassids,
maxregids,
nregids,
fband->
regClassId);
if (IS_HT40_MODE(cm->mode) && (rd == &rd5GHz)) {
chanSep = 40;
if (fband->lowChannel == 5280)
low_adj += 20;
if (fband->lowChannel == 5170)
continue;
} else
chanSep = fband->channelSep;
for (c = fband->lowChannel + low_adj;
((c <= (fband->highChannel + hi_adj)) &&
(c >= (fband->lowChannel + low_adj)));
c += chanSep) {
if (next >= maxchans) {
DPRINTF(ah->ah_sc,
ATH_DBG_REGULATORY,
"%s: too many channels "
"for channel table\n",
__func__);
goto done;
}
if (ath9k_regd_add_channel(ah,
c, c_lo, c_hi,
maxChan, ctl,
next,
rd5GHz,
fband, rd, cm,
ichans,
enableExtendedChannels))
next++;
}
if (IS_HT40_MODE(cm->mode) &&
(fband->lowChannel == 5280)) {
low_adj -= 20;
}
}
}
}
done:
if (next != 0) {
int i;
if (next > ARRAY_SIZE(ah->ah_channels)) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: too many channels %u; truncating to %u\n",
__func__, next,
(int) ARRAY_SIZE(ah->ah_channels));
next = ARRAY_SIZE(ah->ah_channels);
}
#ifdef ATH_NF_PER_CHAN
ath9k_regd_init_rf_buffer(ichans, next);
#endif
ath9k_regd_sort(ichans, next,
sizeof(struct ath9k_channel),
ath9k_regd_chansort);
ah->ah_nchan = next;
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY, "Channel list:\n");
for (i = 0; i < next; i++) {
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"chan: %d flags: 0x%x\n",
ah->ah_channels[i].channel,
ah->ah_channels[i].channelFlags);
}
}
*nchans = next;
ah->ah_countryCode = ah->ah_countryCode;
ah->ah_currentRDInUse = regdmn;
ah->ah_currentRD5G = rd5GHz.regDmnEnum;
ah->ah_currentRD2G = rd2GHz.regDmnEnum;
if (country == NULL) {
ah->ah_iso[0] = 0;
ah->ah_iso[1] = 0;
} else {
ah->ah_iso[0] = country->isoName[0];
ah->ah_iso[1] = country->isoName[1];
}
return next != 0;
}
struct ath9k_channel*
ath9k_regd_check_channel(struct ath_hal *ah,
const struct ath9k_channel *c)
{
struct ath9k_channel *base, *cc;
int flags = c->channelFlags & CHAN_FLAGS;
int n, lim;
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: channel %u/0x%x (0x%x) requested\n", __func__,
c->channel, c->channelFlags, flags);
cc = ah->ah_curchan;
if (cc != NULL && cc->channel == c->channel &&
(cc->channelFlags & CHAN_FLAGS) == flags) {
if ((cc->privFlags & CHANNEL_INTERFERENCE) &&
(cc->privFlags & CHANNEL_DFS))
return NULL;
else
return cc;
}
base = ah->ah_channels;
n = ah->ah_nchan;
for (lim = n; lim != 0; lim >>= 1) {
int d;
cc = &base[lim >> 1];
d = c->channel - cc->channel;
if (d == 0) {
if ((cc->channelFlags & CHAN_FLAGS) == flags) {
if ((cc->privFlags & CHANNEL_INTERFERENCE) &&
(cc->privFlags & CHANNEL_DFS))
return NULL;
else
return cc;
}
d = flags - (cc->channelFlags & CHAN_FLAGS);
}
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY,
"%s: channel %u/0x%x d %d\n", __func__,
cc->channel, cc->channelFlags, d);
if (d > 0) {
base = cc + 1;
lim--;
}
}
DPRINTF(ah->ah_sc, ATH_DBG_REGULATORY, "%s: no match for %u/0x%x\n",
__func__, c->channel, c->channelFlags);
return NULL;
}
u32
ath9k_regd_get_antenna_allowed(struct ath_hal *ah,
struct ath9k_channel *chan)
{
struct ath9k_channel *ichan = NULL;
ichan = ath9k_regd_check_channel(ah, chan);
if (!ichan)
return 0;
return ichan->antennaMax;
}
u32 ath9k_regd_get_ctl(struct ath_hal *ah, struct ath9k_channel *chan)
{
u32 ctl = NO_CTL;
struct ath9k_channel *ichan;
if (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;
} else {
ichan = ath9k_regd_check_channel(ah, chan);
if (ichan != NULL) {
/* FIXME */
if (IS_CHAN_A(ichan))
ctl = ichan->conformanceTestLimit[0];
else if (IS_CHAN_B(ichan))
ctl = ichan->conformanceTestLimit[1];
else if (IS_CHAN_G(ichan))
ctl = ichan->conformanceTestLimit[2];
if (IS_CHAN_G(chan) && (ctl & 0xf) == CTL_11B)
ctl = (ctl & ~0xf) | CTL_11G;
}
}
return ctl;
}
void ath9k_regd_get_current_country(struct ath_hal *ah,
struct ath9k_country_entry *ctry)
{
u16 rd = ath9k_regd_get_eepromRD(ah);
ctry->isMultidomain = false;
if (rd == CTRY_DEFAULT)
ctry->isMultidomain = true;
else if (!(rd & COUNTRY_ERD_FLAG))
ctry->isMultidomain = isWwrSKU(ah);
ctry->countryCode = ah->ah_countryCode;
ctry->regDmnEnum = ah->ah_currentRD;
ctry->regDmn5G = ah->ah_currentRD5G;
ctry->regDmn2G = ah->ah_currentRD2G;
ctry->iso[0] = ah->ah_iso[0];
ctry->iso[1] = ah->ah_iso[1];
ctry->iso[2] = ah->ah_iso[2];
}
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