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freebsd-dev/sys/dev/ath/ath_hal/ah_regdomain.c
Rebecca Cran 7e03a82b63 ath_hal: fix typo in ath_hal_printf
2020-03-18 03:14:17 +00:00

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/*-
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
* Copyright (c) 2005-2006 Atheros Communications, Inc.
* All rights reserved.
*
* 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.
*
* $FreeBSD$
*/
#include "opt_ah.h"
#include "ah.h"
#include <net80211/_ieee80211.h>
#include <net80211/ieee80211_regdomain.h>
#include "ah_internal.h"
#include "ah_eeprom.h"
#include "ah_devid.h"
#include "ah_regdomain.h"
/*
* XXX this code needs a audit+review
*/
/* used throughout this file... */
#define N(a) nitems(a)
#define HAL_MODE_11A_TURBO HAL_MODE_108A
#define HAL_MODE_11G_TURBO HAL_MODE_108G
/*
* Mask to check whether a domain is a multidomain or a single domain
*/
#define MULTI_DOMAIN_MASK 0xFF00
/*
* Enumerated Regulatory Domain Information 8 bit values indicate that
* the regdomain is really a pair of unitary regdomains. 12 bit values
* are the real unitary regdomains and are the only ones which have the
* frequency bitmasks and flags set.
*/
#include "ah_regdomain/ah_rd_regenum.h"
#define WORLD_SKU_MASK 0x00F0
#define WORLD_SKU_PREFIX 0x0060
/*
* THE following table is the mapping of regdomain pairs specified by
* an 8 bit regdomain value to the individual unitary reg domains
*/
#include "ah_regdomain/ah_rd_regmap.h"
/*
* The following tables are the master list for all different freqeuncy
* bands with the complete matrix of all possible flags and settings
* for each band if it is used in ANY reg domain.
*/
#define COUNTRY_ERD_FLAG 0x8000
#define WORLDWIDE_ROAMING_FLAG 0x4000
/*
* This table maps country ISO codes from net80211 into regulatory
* domains which the ath regulatory domain code understands.
*/
#include "ah_regdomain/ah_rd_ctry.h"
/*
* The frequency band collections are a set of frequency ranges
* with shared properties - max tx power, max antenna gain, channel width,
* channel spacing, DFS requirements and passive scanning requirements.
*
* These are represented as entries in a frequency band bitmask.
* Each regulatory domain entry in ah_regdomain_domains.h uses one
* or more frequency band entries for each of the channel modes
* supported (11bg, 11a, half, quarter, turbo, etc.)
*
*/
#include "ah_regdomain/ah_rd_freqbands.h"
/*
* This is the main regulatory database. It defines the supported
* set of features and requirements for each of the defined regulatory
* zones. It uses combinations of frequency ranges - represented in
* a bitmask - to determine the requirements and limitations needed.
*/
#include "ah_regdomain/ah_rd_domains.h"
static const struct cmode modes[] = {
{ HAL_MODE_TURBO, IEEE80211_CHAN_ST, &regDmn5GhzTurboFreq[0] },
{ HAL_MODE_11A, IEEE80211_CHAN_A, &regDmn5GhzFreq[0] },
{ HAL_MODE_11B, IEEE80211_CHAN_B, &regDmn2GhzFreq[0] },
{ HAL_MODE_11G, IEEE80211_CHAN_G, &regDmn2Ghz11gFreq[0] },
{ HAL_MODE_11G_TURBO, IEEE80211_CHAN_108G, &regDmn2Ghz11gTurboFreq[0] },
{ HAL_MODE_11A_TURBO, IEEE80211_CHAN_108A, &regDmn5GhzTurboFreq[0] },
{ HAL_MODE_11A_QUARTER_RATE,
IEEE80211_CHAN_A | IEEE80211_CHAN_QUARTER, &regDmn5GhzFreq[0] },
{ HAL_MODE_11A_HALF_RATE,
IEEE80211_CHAN_A | IEEE80211_CHAN_HALF, &regDmn5GhzFreq[0] },
{ HAL_MODE_11G_QUARTER_RATE,
IEEE80211_CHAN_G | IEEE80211_CHAN_QUARTER, &regDmn2Ghz11gFreq[0] },
{ HAL_MODE_11G_HALF_RATE,
IEEE80211_CHAN_G | IEEE80211_CHAN_HALF, &regDmn2Ghz11gFreq[0] },
{ HAL_MODE_11NG_HT20,
IEEE80211_CHAN_G | IEEE80211_CHAN_HT20, &regDmn2Ghz11gFreq[0] },
{ HAL_MODE_11NG_HT40PLUS,
IEEE80211_CHAN_G | IEEE80211_CHAN_HT40U, &regDmn2Ghz11gFreq[0] },
{ HAL_MODE_11NG_HT40MINUS,
IEEE80211_CHAN_G | IEEE80211_CHAN_HT40D, &regDmn2Ghz11gFreq[0] },
{ HAL_MODE_11NA_HT20,
IEEE80211_CHAN_A | IEEE80211_CHAN_HT20, &regDmn5GhzFreq[0] },
{ HAL_MODE_11NA_HT40PLUS,
IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U, &regDmn5GhzFreq[0] },
{ HAL_MODE_11NA_HT40MINUS,
IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D, &regDmn5GhzFreq[0] },
};
static void ath_hal_update_dfsdomain(struct ath_hal *ah);
static OS_INLINE uint16_t
getEepromRD(struct ath_hal *ah)
{
return AH_PRIVATE(ah)->ah_currentRD &~ WORLDWIDE_ROAMING_FLAG;
}
/*
* Test to see if the bitmask array is all zeros
*/
static HAL_BOOL
isChanBitMaskZero(const uint64_t *bitmask)
{
#if BMLEN > 2
#error "add more cases"
#endif
#if BMLEN > 1
if (bitmask[1] != 0)
return AH_FALSE;
#endif
return (bitmask[0] == 0);
}
/*
* 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;
}
/*
* Find the pointer to the country element in the country table
* corresponding to the country code
*/
static COUNTRY_CODE_TO_ENUM_RD*
findCountry(HAL_CTRY_CODE countryCode)
{
int i;
for (i = 0; i < N(allCountries); i++) {
if (allCountries[i].countryCode == countryCode)
return &allCountries[i];
}
return AH_NULL;
}
static REG_DOMAIN *
findRegDmn(int regDmn)
{
int i;
for (i = 0; i < N(regDomains); i++) {
if (regDomains[i].regDmnEnum == regDmn)
return &regDomains[i];
}
return AH_NULL;
}
static REG_DMN_PAIR_MAPPING *
findRegDmnPair(int regDmnPair)
{
int i;
if (regDmnPair != NO_ENUMRD) {
for (i = 0; i < N(regDomainPairs); i++) {
if (regDomainPairs[i].regDmnEnum == regDmnPair)
return &regDomainPairs[i];
}
}
return AH_NULL;
}
/*
* 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_BOOL
IS_BIT_SET(int bit, const uint64_t bitmask[])
{
int byteOffset, bitnum;
uint64_t val;
byteOffset = bit/64;
bitnum = bit - byteOffset*64;
val = ((uint64_t) 1) << bitnum;
return (bitmask[byteOffset] & val) != 0;
}
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;
}
static uint64_t *
getchannelBM(u_int mode, REG_DOMAIN *rd)
{
switch (mode) {
case HAL_MODE_11B:
return (rd->chan11b);
case HAL_MODE_11G_QUARTER_RATE:
return (rd->chan11g_quarter);
case HAL_MODE_11G_HALF_RATE:
return (rd->chan11g_half);
case HAL_MODE_11G:
case HAL_MODE_11NG_HT20:
case HAL_MODE_11NG_HT40PLUS:
case HAL_MODE_11NG_HT40MINUS:
return (rd->chan11g);
case HAL_MODE_11G_TURBO:
return (rd->chan11g_turbo);
case HAL_MODE_11A_QUARTER_RATE:
return (rd->chan11a_quarter);
case HAL_MODE_11A_HALF_RATE:
return (rd->chan11a_half);
case HAL_MODE_11A:
case HAL_MODE_11NA_HT20:
case HAL_MODE_11NA_HT40PLUS:
case HAL_MODE_11NA_HT40MINUS:
return (rd->chan11a);
case HAL_MODE_TURBO:
return (rd->chan11a_turbo);
case HAL_MODE_11A_TURBO:
return (rd->chan11a_dyn_turbo);
default:
return (AH_NULL);
}
}
static void
setchannelflags(struct ieee80211_channel *c, REG_DMN_FREQ_BAND *fband,
REG_DOMAIN *rd)
{
if (fband->usePassScan & rd->pscan)
c->ic_flags |= IEEE80211_CHAN_PASSIVE;
if (fband->useDfs & rd->dfsMask)
c->ic_flags |= IEEE80211_CHAN_DFS;
if (IEEE80211_IS_CHAN_5GHZ(c) && (rd->flags & DISALLOW_ADHOC_11A))
c->ic_flags |= IEEE80211_CHAN_NOADHOC;
if (IEEE80211_IS_CHAN_TURBO(c) &&
(rd->flags & DISALLOW_ADHOC_11A_TURB))
c->ic_flags |= IEEE80211_CHAN_NOADHOC;
if (rd->flags & NO_HOSTAP)
c->ic_flags |= IEEE80211_CHAN_NOHOSTAP;
if (rd->flags & LIMIT_FRAME_4MS)
c->ic_flags |= IEEE80211_CHAN_4MSXMIT;
if (rd->flags & NEED_NFC)
c->ic_flags |= CHANNEL_NFCREQUIRED;
}
static int
addchan(struct ath_hal *ah, struct ieee80211_channel chans[],
u_int maxchans, int *nchans, uint16_t freq, uint32_t flags,
REG_DMN_FREQ_BAND *fband, REG_DOMAIN *rd)
{
struct ieee80211_channel *c;
if (*nchans >= maxchans)
return (HAL_ENOMEM);
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: %d: freq=%d, flags=0x%08x\n",
__func__, *nchans, (int) freq, flags);
c = &chans[(*nchans)++];
c->ic_freq = freq;
c->ic_flags = flags;
setchannelflags(c, fband, rd);
c->ic_maxregpower = fband->powerDfs;
ath_hal_getpowerlimits(ah, c);
c->ic_maxantgain = fband->antennaMax;
return (0);
}
static int
copychan_prev(struct ath_hal *ah, struct ieee80211_channel chans[],
u_int maxchans, int *nchans, uint16_t freq, uint32_t flags)
{
struct ieee80211_channel *c;
if (*nchans == 0)
return (HAL_EINVAL);
if (*nchans >= maxchans)
return (HAL_ENOMEM);
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: %d: freq=%d, flags=0x%08x\n",
__func__, *nchans, (int) freq, flags);
c = &chans[(*nchans)++];
c[0] = c[-1];
c->ic_freq = freq;
/* XXX is it needed here? */
ath_hal_getpowerlimits(ah, c);
return (0);
}
static int
add_chanlist_band(struct ath_hal *ah, struct ieee80211_channel chans[],
int maxchans, int *nchans, uint16_t freq_lo, uint16_t freq_hi, int step,
uint32_t flags, REG_DMN_FREQ_BAND *fband, REG_DOMAIN *rd)
{
uint16_t freq = freq_lo;
int error;
if (freq_hi < freq_lo)
return (0);
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: freq=%d..%d, flags=0x%08x, step=%d\n", __func__,
(int) freq_lo, (int) freq_hi, flags, step);
error = addchan(ah, chans, maxchans, nchans, freq, flags, fband, rd);
for (freq += step; freq <= freq_hi && error == 0; freq += step)
error = copychan_prev(ah, chans, maxchans, nchans, freq, flags);
return (error);
}
static void
adj_freq_ht40(u_int mode, int *low_adj, int *hi_adj, int *channelSep)
{
*low_adj = *hi_adj = *channelSep = 0;
switch (mode) {
case HAL_MODE_11NA_HT40PLUS:
*channelSep = 40;
/* FALLTHROUGH */
case HAL_MODE_11NG_HT40PLUS:
*hi_adj = -20;
break;
case HAL_MODE_11NA_HT40MINUS:
*channelSep = 40;
/* FALLTHROUGH */
case HAL_MODE_11NG_HT40MINUS:
*low_adj = 20;
break;
}
}
static void
add_chanlist_mode(struct ath_hal *ah, struct ieee80211_channel chans[],
u_int maxchans, int *nchans, const struct cmode *cm, REG_DOMAIN *rd,
HAL_BOOL enableExtendedChannels)
{
uint64_t *channelBM;
uint16_t freq_lo, freq_hi;
int b, error, low_adj, hi_adj, channelSep;
if (!ath_hal_getChannelEdges(ah, cm->flags, &freq_lo, &freq_hi)) {
/* channel not supported by hardware, skip it */
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: channels 0x%x not supported by hardware\n",
__func__, cm->flags);
return;
}
channelBM = getchannelBM(cm->mode, rd);
if (isChanBitMaskZero(channelBM))
return;
/*
* Setup special handling for HT40 channels; e.g.
* 5G HT40 channels require 40Mhz channel separation.
*/
adj_freq_ht40(cm->mode, &low_adj, &hi_adj, &channelSep);
for (b = 0; b < 64*BMLEN; b++) {
REG_DMN_FREQ_BAND *fband;
uint16_t bfreq_lo, bfreq_hi;
int step;
if (!IS_BIT_SET(b, channelBM))
continue;
fband = &cm->freqs[b];
if ((fband->usePassScan & IS_ECM_CHAN) &&
!enableExtendedChannels) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"skip ecm channels\n");
continue;
}
#if 0
if ((fband->useDfs & rd->dfsMask) &&
(cm->flags & IEEE80211_CHAN_HT40)) {
/* NB: DFS and HT40 don't mix */
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"skip HT40 chan, DFS required\n");
continue;
}
#endif
/*
* XXX TODO: handle REG_EXT_FCC_CH_144.
*
* Figure out which instances/uses cause us to not
* be allowed to use channel 144 (pri or sec overlap.)
*/
bfreq_lo = MAX(fband->lowChannel + low_adj, freq_lo);
bfreq_hi = MIN(fband->highChannel + hi_adj, freq_hi);
/*
* Don't start the 5GHz channel list at 5120MHz.
*
* Unfortunately (sigh) the HT40 channel creation
* logic will create HT40U channels at 5120, 5160, 5200.
* This means that 36 (5180) isn't considered as a
* HT40 channel, and everything goes messed up from there.
*/
if ((cm->flags & IEEE80211_CHAN_5GHZ) &&
(cm->flags & IEEE80211_CHAN_HT40U)) {
if (bfreq_lo < 5180)
bfreq_lo = 5180;
}
/*
* Same with HT40D - need to start at 5200 or the low
* channels are all wrong again.
*/
if ((cm->flags & IEEE80211_CHAN_5GHZ) &&
(cm->flags & IEEE80211_CHAN_HT40D)) {
if (bfreq_lo < 5200)
bfreq_lo = 5200;
}
if (fband->channelSep >= channelSep)
step = fband->channelSep;
else
step = roundup(channelSep, fband->channelSep);
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: freq_lo=%d, freq_hi=%d, low_adj=%d, hi_adj=%d, "
"bandlo=%d, bandhi=%d, bfreqlo=%d, bfreqhi=%d, step=%d, "
"flags=0x%08x\n",
__func__,
(int) freq_lo,
(int) freq_hi,
(int) low_adj,
(int) hi_adj,
(int) fband->lowChannel,
(int) fband->highChannel,
(int) bfreq_lo,
(int) bfreq_hi,
step,
(int) cm->flags);
error = add_chanlist_band(ah, chans, maxchans, nchans,
bfreq_lo, bfreq_hi, step, cm->flags, fband, rd);
if (error != 0) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: too many channels for channel table\n",
__func__);
return;
}
}
}
static u_int
getmodesmask(struct ath_hal *ah, REG_DOMAIN *rd5GHz, u_int modeSelect)
{
#define HAL_MODE_11A_ALL \
(HAL_MODE_11A | HAL_MODE_11A_TURBO | HAL_MODE_TURBO | \
HAL_MODE_11A_QUARTER_RATE | HAL_MODE_11A_HALF_RATE)
u_int modesMask;
/* get modes that HW is capable of */
modesMask = ath_hal_getWirelessModes(ah);
modesMask &= modeSelect;
/* optimize work below if no 11a channels */
if (isChanBitMaskZero(rd5GHz->chan11a) &&
(modesMask & HAL_MODE_11A_ALL)) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: disallow all 11a\n", __func__);
modesMask &= ~HAL_MODE_11A_ALL;
}
return (modesMask);
#undef HAL_MODE_11A_ALL
}
/*
* Construct the channel list for the specified regulatory config.
*/
static HAL_STATUS
getchannels(struct ath_hal *ah,
struct ieee80211_channel chans[], u_int maxchans, int *nchans,
u_int modeSelect, HAL_CTRY_CODE cc, HAL_REG_DOMAIN regDmn,
HAL_BOOL enableExtendedChannels,
COUNTRY_CODE_TO_ENUM_RD **pcountry,
REG_DOMAIN **prd2GHz, REG_DOMAIN **prd5GHz)
{
REG_DOMAIN *rd5GHz, *rd2GHz;
u_int modesMask;
const struct cmode *cm;
HAL_STATUS status;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN, "%s: cc %u regDmn 0x%x mode 0x%x%s\n",
__func__, cc, regDmn, modeSelect,
enableExtendedChannels ? " ecm" : "");
status = getregstate(ah, cc, regDmn, pcountry, &rd2GHz, &rd5GHz);
if (status != HAL_OK)
return status;
modesMask = getmodesmask(ah, rd5GHz, modeSelect);
/* XXX error? */
if (modesMask == 0)
goto done;
for (cm = modes; cm < &modes[N(modes)]; cm++) {
REG_DOMAIN *rd;
if ((cm->mode & modesMask) == 0) {
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: skip mode 0x%x flags 0x%x\n",
__func__, cm->mode, cm->flags);
continue;
}
if (cm->flags & IEEE80211_CHAN_5GHZ)
rd = rd5GHz;
else if (cm->flags & IEEE80211_CHAN_2GHZ)
rd = rd2GHz;
else {
ath_hal_printf(ah, "%s: Unknown HAL flags 0x%x\n",
__func__, cm->flags);
return HAL_EINVAL;
}
add_chanlist_mode(ah, chans, maxchans, nchans, cm,
rd, enableExtendedChannels);
if (*nchans >= maxchans)
goto done;
}
done:
/* NB: pcountry set above by getregstate */
if (prd2GHz != AH_NULL)
*prd2GHz = rd2GHz;
if (prd5GHz != AH_NULL)
*prd5GHz = rd5GHz;
return HAL_OK;
}
/*
* Retrieve a channel list without affecting runtime state.
*/
HAL_STATUS
ath_hal_getchannels(struct ath_hal *ah,
struct ieee80211_channel chans[], u_int maxchans, int *nchans,
u_int modeSelect, HAL_CTRY_CODE cc, HAL_REG_DOMAIN regDmn,
HAL_BOOL enableExtendedChannels)
{
return getchannels(ah, chans, maxchans, nchans, modeSelect,
cc, regDmn, enableExtendedChannels, AH_NULL, AH_NULL, AH_NULL);
}
/*
* Handle frequency mapping from 900Mhz range to 2.4GHz range
* for GSM radios. This is done when we need the h/w frequency
* and the channel is marked IEEE80211_CHAN_GSM.
*/
static int
ath_hal_mapgsm(int sku, int freq)
{
if (sku == SKU_XR9)
return 1520 + freq;
if (sku == SKU_GZ901)
return 1544 + freq;
if (sku == SKU_SR9)
return 3344 - freq;
if (sku == SKU_XC900M)
return 1517 + freq;
HALDEBUG(AH_NULL, HAL_DEBUG_ANY,
"%s: cannot map freq %u unknown gsm sku %u\n",
__func__, freq, sku);
return freq;
}
/*
* Setup the internal/private channel state given a table of
* net80211 channels. We collapse entries for the same frequency
* and record the frequency for doing noise floor processing
* where we don't have net80211 channel context.
*/
static HAL_BOOL
assignPrivateChannels(struct ath_hal *ah,
struct ieee80211_channel chans[], int nchans, int sku)
{
HAL_CHANNEL_INTERNAL *ic;
int i, j, next, freq;
next = 0;
for (i = 0; i < nchans; i++) {
struct ieee80211_channel *c = &chans[i];
for (j = i-1; j >= 0; j--)
if (chans[j].ic_freq == c->ic_freq) {
c->ic_devdata = chans[j].ic_devdata;
break;
}
if (j < 0) {
/* new entry, assign a private channel entry */
if (next >= N(AH_PRIVATE(ah)->ah_channels)) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: too many channels, max %zu\n",
__func__, N(AH_PRIVATE(ah)->ah_channels));
return AH_FALSE;
}
/*
* Handle frequency mapping for 900MHz devices.
* The hardware uses 2.4GHz frequencies that are
* down-converted. The 802.11 layer uses the
* true frequencies.
*/
freq = IEEE80211_IS_CHAN_GSM(c) ?
ath_hal_mapgsm(sku, c->ic_freq) : c->ic_freq;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN,
"%s: private[%3u] %u/0x%x -> channel %u\n",
__func__, next, c->ic_freq, c->ic_flags, freq);
ic = &AH_PRIVATE(ah)->ah_channels[next];
/*
* NB: This clears privFlags which means ancillary
* code like ANI and IQ calibration will be
* restarted and re-setup any per-channel state.
*/
OS_MEMZERO(ic, sizeof(*ic));
ic->channel = freq;
c->ic_devdata = next;
next++;
}
}
AH_PRIVATE(ah)->ah_nchan = next;
HALDEBUG(ah, HAL_DEBUG_ANY, "%s: %u public, %u private channels\n",
__func__, nchans, next);
return AH_TRUE;
}
/*
* Setup the channel list based on the information in the EEPROM.
*/
HAL_STATUS
ath_hal_init_channels(struct ath_hal *ah,
struct ieee80211_channel chans[], u_int maxchans, int *nchans,
u_int modeSelect, HAL_CTRY_CODE cc, HAL_REG_DOMAIN regDmn,
HAL_BOOL enableExtendedChannels)
{
COUNTRY_CODE_TO_ENUM_RD *country;
REG_DOMAIN *rd5GHz, *rd2GHz;
HAL_STATUS status;
status = getchannels(ah, chans, maxchans, nchans, modeSelect,
cc, regDmn, enableExtendedChannels, &country, &rd2GHz, &rd5GHz);
if (status == HAL_OK &&
assignPrivateChannels(ah, chans, *nchans, AH_PRIVATE(ah)->ah_currentRD)) {
AH_PRIVATE(ah)->ah_rd2GHz = rd2GHz;
AH_PRIVATE(ah)->ah_rd5GHz = rd5GHz;
ah->ah_countryCode = country->countryCode;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN, "%s: cc %u\n",
__func__, ah->ah_countryCode);
/* Update current DFS domain */
ath_hal_update_dfsdomain(ah);
} else
status = HAL_EINVAL;
return status;
}
/*
* Set the channel list.
*/
HAL_STATUS
ath_hal_set_channels(struct ath_hal *ah,
struct ieee80211_channel chans[], int nchans,
HAL_CTRY_CODE cc, HAL_REG_DOMAIN rd)
{
COUNTRY_CODE_TO_ENUM_RD *country;
REG_DOMAIN *rd5GHz, *rd2GHz;
HAL_STATUS status;
switch (rd) {
case SKU_SR9:
case SKU_XR9:
case SKU_GZ901:
case SKU_XC900M:
/*
* Map 900MHz sku's. The frequencies will be mapped
* according to the sku to compensate for the down-converter.
* We use the FCC for these sku's as the mapped channel
* list is known compatible (will need to change if/when
* vendors do different mapping in different locales).
*/
status = getregstate(ah, CTRY_DEFAULT, SKU_FCC,
&country, &rd2GHz, &rd5GHz);
break;
default:
status = getregstate(ah, cc, rd,
&country, &rd2GHz, &rd5GHz);
rd = AH_PRIVATE(ah)->ah_currentRD;
break;
}
if (status == HAL_OK && assignPrivateChannels(ah, chans, nchans, rd)) {
AH_PRIVATE(ah)->ah_rd2GHz = rd2GHz;
AH_PRIVATE(ah)->ah_rd5GHz = rd5GHz;
ah->ah_countryCode = country->countryCode;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN, "%s: cc %u\n",
__func__, ah->ah_countryCode);
} else
status = HAL_EINVAL;
if (status == HAL_OK) {
/* Update current DFS domain */
(void) ath_hal_update_dfsdomain(ah);
}
return status;
}
#ifdef AH_DEBUG
/*
* Return the internal channel corresponding to a public channel.
* NB: normally this routine is inline'd (see ah_internal.h)
*/
HAL_CHANNEL_INTERNAL *
ath_hal_checkchannel(struct ath_hal *ah, const struct ieee80211_channel *c)
{
HAL_CHANNEL_INTERNAL *cc = &AH_PRIVATE(ah)->ah_channels[c->ic_devdata];
if (c->ic_devdata < AH_PRIVATE(ah)->ah_nchan &&
(c->ic_freq == cc->channel || IEEE80211_IS_CHAN_GSM(c)))
return cc;
if (c->ic_devdata >= AH_PRIVATE(ah)->ah_nchan) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: bad mapping, devdata %u nchans %u\n",
__func__, c->ic_devdata, AH_PRIVATE(ah)->ah_nchan);
HALASSERT(c->ic_devdata < AH_PRIVATE(ah)->ah_nchan);
} else {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: no match for %u/0x%x devdata %u channel %u\n",
__func__, c->ic_freq, c->ic_flags, c->ic_devdata,
cc->channel);
HALASSERT(c->ic_freq == cc->channel || IEEE80211_IS_CHAN_GSM(c));
}
return AH_NULL;
}
#endif /* AH_DEBUG */
#define isWwrSKU(_ah) \
((getEepromRD((_ah)) & WORLD_SKU_MASK) == WORLD_SKU_PREFIX || \
getEepromRD(_ah) == WORLD)
/*
* Return the test group for the specific channel based on
* the current regulatory setup.
*/
u_int
ath_hal_getctl(struct ath_hal *ah, const struct ieee80211_channel *c)
{
u_int ctl;
if (AH_PRIVATE(ah)->ah_rd2GHz == AH_PRIVATE(ah)->ah_rd5GHz ||
(ah->ah_countryCode == CTRY_DEFAULT && isWwrSKU(ah)))
ctl = SD_NO_CTL;
else if (IEEE80211_IS_CHAN_2GHZ(c))
ctl = AH_PRIVATE(ah)->ah_rd2GHz->conformanceTestLimit;
else
ctl = AH_PRIVATE(ah)->ah_rd5GHz->conformanceTestLimit;
if (IEEE80211_IS_CHAN_B(c))
return ctl | CTL_11B;
if (IEEE80211_IS_CHAN_G(c))
return ctl | CTL_11G;
if (IEEE80211_IS_CHAN_108G(c))
return ctl | CTL_108G;
if (IEEE80211_IS_CHAN_TURBO(c))
return ctl | CTL_TURBO;
if (IEEE80211_IS_CHAN_A(c))
return ctl | CTL_11A;
return ctl;
}
/*
* Update the current dfsDomain setting based on the given
* country code.
*
* Since FreeBSD/net80211 allows the channel set to change
* after the card has been setup (via ath_hal_init_channels())
* this function method is needed to update ah_dfsDomain.
*/
void
ath_hal_update_dfsdomain(struct ath_hal *ah)
{
const REG_DOMAIN *rd5GHz = AH_PRIVATE(ah)->ah_rd5GHz;
HAL_DFS_DOMAIN dfsDomain = HAL_DFS_UNINIT_DOMAIN;
if (rd5GHz->dfsMask & DFS_FCC3)
dfsDomain = HAL_DFS_FCC_DOMAIN;
if (rd5GHz->dfsMask & DFS_ETSI)
dfsDomain = HAL_DFS_ETSI_DOMAIN;
if (rd5GHz->dfsMask & DFS_MKK4)
dfsDomain = HAL_DFS_MKK4_DOMAIN;
AH_PRIVATE(ah)->ah_dfsDomain = dfsDomain;
HALDEBUG(ah, HAL_DEBUG_REGDOMAIN, "%s ah_dfsDomain: %d\n",
__func__, AH_PRIVATE(ah)->ah_dfsDomain);
}
/*
* Return the max allowed antenna gain and apply any regulatory
* domain specific changes.
*
* NOTE: a negative reduction is possible in RD's that only
* measure radiated power (e.g., ETSI) which would increase
* that actual conducted output power (though never beyond
* the calibrated target power).
*/
u_int
ath_hal_getantennareduction(struct ath_hal *ah,
const struct ieee80211_channel *chan, u_int twiceGain)
{
int8_t antennaMax = twiceGain - chan->ic_maxantgain*2;
return (antennaMax < 0) ? 0 : antennaMax;
}
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