/*
* Return whether or not the regulatory domain/country in EEPROM
* is acceptable.
*/
static HAL_BOOL
isEepromValid(struct ath_hal *ah)
{
uint16_t rd = getEepromRD(ah);
int i;
if (rd & COUNTRY_ERD_FLAG) {
uint16_t cc = rd &~ COUNTRY_ERD_FLAG;
for (i = 0; i < N(allCountries); i++)
if (allCountries[i].countryCode == cc)
return AH_TRUE;
} else {
for (i = 0; i < N(regDomainPairs); i++)
if (regDomainPairs[i].regDmnEnum == rd)
return AH_TRUE;
}
if (rd == FCC_UBNT) {
return AH_TRUE;
}
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: invalid regulatory domain/country code 0x%x\n", __func__, rd);
return AH_FALSE;
}
/*
* Calculate a default country based on the EEPROM setting.
*/
static HAL_CTRY_CODE
getDefaultCountry(struct ath_hal *ah)
{
REG_DMN_PAIR_MAPPING *regpair;
uint16_t rd;
rd = getEepromRD(ah);
if (rd & COUNTRY_ERD_FLAG) {
COUNTRY_CODE_TO_ENUM_RD *country;
uint16_t cc = rd & ~COUNTRY_ERD_FLAG;
country = findCountry(cc);
if (country != AH_NULL)
return cc;
}
/*
* Check reg domains that have only one country
*/
regpair = findRegDmnPair(rd);
return (regpair != AH_NULL) ? regpair->singleCC : CTRY_DEFAULT;
}
static HAL_STATUS
getregstate(struct ath_hal *ah, HAL_CTRY_CODE cc, HAL_REG_DOMAIN regDmn,
COUNTRY_CODE_TO_ENUM_RD **pcountry,
REG_DOMAIN **prd2GHz, REG_DOMAIN **prd5GHz)
{
COUNTRY_CODE_TO_ENUM_RD *country;
REG_DOMAIN *rd5GHz, *rd2GHz;
if (cc == CTRY_DEFAULT && regDmn == SKU_NONE) {
/*
* Validate the EEPROM setting and setup defaults
*/
if (!isEepromValid(ah)) {
/*
* Don't return any channels if the EEPROM has an
* invalid regulatory domain/country code setting.
*/
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: invalid EEPROM contents\n",__func__);
return HAL_EEBADREG;
}
cc = getDefaultCountry(ah);
country = findCountry(cc);
if (country == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"NULL Country!, cc %d\n", cc);
return HAL_EEBADCC;
}
regDmn = country->regDmnEnum;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN, "%s: EEPROM cc %u rd 0x%x\n",
__func__, cc, regDmn);
if (country->countryCode == CTRY_DEFAULT) {
/*
* Check EEPROM; SKU may be for a country, single
* domain, or multiple domains (WWR).
*/
uint16_t rdnum = getEepromRD(ah);
if ((rdnum & COUNTRY_ERD_FLAG) == 0 &&
(findRegDmn(rdnum) != AH_NULL ||
findRegDmnPair(rdnum) != AH_NULL)) {
regDmn = rdnum;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: EEPROM rd 0x%x\n", __func__, rdnum);
}
}
} else {
country = findCountry(cc);
if (country == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"unknown country, cc %d\n", cc);
return HAL_EINVAL;
}
if (regDmn == SKU_NONE)
regDmn = country->regDmnEnum;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN, "%s: cc %u rd 0x%x\n",
__func__, cc, regDmn);
}
/*
* Setup per-band state.
*/
if ((regDmn & MULTI_DOMAIN_MASK) == 0) {
REG_DMN_PAIR_MAPPING *regpair = findRegDmnPair(regDmn);
if (regpair == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: no reg domain pair %u for country %u\n",
__func__, regDmn, country->countryCode);
return HAL_EINVAL;
}
rd5GHz = findRegDmn(regpair->regDmn5GHz);
if (rd5GHz == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: no 5GHz reg domain %u for country %u\n",
__func__, regpair->regDmn5GHz, country->countryCode);
return HAL_EINVAL;
}
rd2GHz = findRegDmn(regpair->regDmn2GHz);
if (rd2GHz == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: no 2GHz reg domain %u for country %u\n",
__func__, regpair->regDmn2GHz, country->countryCode);
return HAL_EINVAL;
}
} else {
rd5GHz = rd2GHz = findRegDmn(regDmn);
if (rd2GHz == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: no unitary reg domain %u for country %u\n",
__func__, regDmn, country->countryCode);
return HAL_EINVAL;
}
}
if (pcountry != AH_NULL)
*pcountry = country;
*prd2GHz = rd2GHz;
*prd5GHz = rd5GHz;
return HAL_OK;
}