diff options
Diffstat (limited to 'drivers/net/wireless/ath9k/regd.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/regd.c | 1026 |
1 files changed, 1026 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c new file mode 100644 index 000000000000..62e28887ccd3 --- /dev/null +++ b/drivers/net/wireless/ath9k/regd.c @@ -0,0 +1,1026 @@ +/* + * 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, ®Domains[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 = ®DomainPairs[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 = ®Dmn5GhzFreq[0]; + ctl = rd->conformanceTestLimit; + break; + case ATH9K_MODE_11B: + rd = &rd2GHz; + channelBM = rd->chan11b; + freqs = ®Dmn2GhzFreq[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 = ®Dmn2Ghz11gFreq[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]; +} |