diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath12k/reg.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/reg.c | 994 |
1 files changed, 994 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c new file mode 100644 index 000000000000..7898f6981e5a --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/reg.c @@ -0,0 +1,994 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. + * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. + */ +#include <linux/rtnetlink.h> +#include "core.h" +#include "debug.h" +#include "mac.h" + +/* World regdom to be used in case default regd from fw is unavailable */ +#define ATH12K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) +#define ATH12K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\ + NL80211_RRF_NO_IR) +#define ATH12K_5GHZ_5725_5850 REG_RULE(5725 - 10, 5850 + 10, 80, 0, 30,\ + NL80211_RRF_NO_IR) + +#define ETSI_WEATHER_RADAR_BAND_LOW 5590 +#define ETSI_WEATHER_RADAR_BAND_HIGH 5650 +#define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 600000 + +static const struct ieee80211_regdomain ath12k_world_regd = { + .n_reg_rules = 3, + .alpha2 = "00", + .reg_rules = { + ATH12K_2GHZ_CH01_11, + ATH12K_5GHZ_5150_5350, + ATH12K_5GHZ_5725_5850, + } +}; + +static bool ath12k_regdom_changes(struct ieee80211_hw *hw, char *alpha2) +{ + const struct ieee80211_regdomain *regd; + + regd = rcu_dereference_rtnl(hw->wiphy->regd); + /* This can happen during wiphy registration where the previous + * user request is received before we update the regd received + * from firmware. + */ + if (!regd) + return true; + + return memcmp(regd->alpha2, alpha2, 2) != 0; +} + +static void +ath12k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) +{ + struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); + struct ath12k_wmi_init_country_arg arg; + struct wmi_set_current_country_arg current_arg = {}; + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + int ret, i; + + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "Regulatory Notification received for %s\n", wiphy_name(wiphy)); + + if (request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "driver initiated regd update\n"); + if (ah->state != ATH12K_HW_STATE_ON) + return; + + for_each_ar(ah, ar, i) { + ret = ath12k_reg_update_chan_list(ar, true); + if (ret && ret != -EINVAL) { + ath12k_warn(ar->ab, + "failed to update chan list for pdev %u, ret %d\n", + i, ret); + break; + } + } + return; + } + + /* Currently supporting only General User Hints. Cell base user + * hints to be handled later. + * Hints from other sources like Core, Beacons are not expected for + * self managed wiphy's + */ + if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && + request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { + ath12k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); + return; + } + + if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "Country Setting is not allowed\n"); + return; + } + + if (!ath12k_regdom_changes(hw, request->alpha2)) { + ath12k_dbg(ar->ab, ATH12K_DBG_REG, "Country is already set\n"); + return; + } + + /* Allow fresh updates to wiphy regd */ + ah->regd_updated = false; + + /* Send the reg change request to all the radios */ + for_each_ar(ah, ar, i) { + reinit_completion(&ar->regd_update_completed); + + if (ar->ab->hw_params->current_cc_support) { + memcpy(¤t_arg.alpha2, request->alpha2, 2); + memcpy(&ar->alpha2, ¤t_arg.alpha2, 2); + ret = ath12k_wmi_send_set_current_country_cmd(ar, ¤t_arg); + if (ret) + ath12k_warn(ar->ab, + "failed set current country code: %d\n", ret); + } else { + arg.flags = ALPHA_IS_SET; + memcpy(&arg.cc_info.alpha2, request->alpha2, 2); + arg.cc_info.alpha2[2] = 0; + + ret = ath12k_wmi_send_init_country_cmd(ar, &arg); + if (ret) + ath12k_warn(ar->ab, + "failed set INIT Country code: %d\n", ret); + } + + wiphy_lock(wiphy); + ath12k_mac_11d_scan_stop(ar); + wiphy_unlock(wiphy); + + ar->regdom_set_by_user = true; + } +} + +int ath12k_reg_update_chan_list(struct ath12k *ar, bool wait) +{ + struct ieee80211_supported_band **bands; + struct ath12k_wmi_scan_chan_list_arg *arg; + struct ieee80211_channel *channel; + struct ieee80211_hw *hw = ath12k_ar_to_hw(ar); + struct ath12k_wmi_channel_arg *ch; + enum nl80211_band band; + int num_channels = 0; + int i, ret = 0; + + if (ar->ah->state == ATH12K_HW_STATE_RESTARTING) + return 0; + + bands = hw->wiphy->bands; + for (band = 0; band < NUM_NL80211_BANDS; band++) { + if (!(ar->mac.sbands[band].channels && bands[band])) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + if (bands[band]->channels[i].flags & + IEEE80211_CHAN_DISABLED) + continue; + /* Skip Channels that are not in current radio's range */ + if (bands[band]->channels[i].center_freq < + KHZ_TO_MHZ(ar->freq_range.start_freq) || + bands[band]->channels[i].center_freq > + KHZ_TO_MHZ(ar->freq_range.end_freq)) + continue; + + num_channels++; + } + } + + if (!num_channels) { + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "pdev is not supported for this country\n"); + return -EINVAL; + } + + arg = kzalloc(struct_size(arg, channel, num_channels), GFP_KERNEL); + + if (!arg) + return -ENOMEM; + + arg->pdev_id = ar->pdev->pdev_id; + arg->nallchans = num_channels; + + ch = arg->channel; + + for (band = 0; band < NUM_NL80211_BANDS; band++) { + if (!(ar->mac.sbands[band].channels && bands[band])) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + channel = &bands[band]->channels[i]; + + if (channel->flags & IEEE80211_CHAN_DISABLED) + continue; + + /* Skip Channels that are not in current radio's range */ + if (bands[band]->channels[i].center_freq < + KHZ_TO_MHZ(ar->freq_range.start_freq) || + bands[band]->channels[i].center_freq > + KHZ_TO_MHZ(ar->freq_range.end_freq)) + continue; + + /* TODO: Set to true/false based on some condition? */ + ch->allow_ht = true; + ch->allow_vht = true; + ch->allow_he = true; + + ch->dfs_set = + !!(channel->flags & IEEE80211_CHAN_RADAR); + ch->is_chan_passive = !!(channel->flags & + IEEE80211_CHAN_NO_IR); + ch->is_chan_passive |= ch->dfs_set; + ch->mhz = channel->center_freq; + ch->cfreq1 = channel->center_freq; + ch->minpower = 0; + ch->maxpower = channel->max_power * 2; + ch->maxregpower = channel->max_reg_power * 2; + ch->antennamax = channel->max_antenna_gain * 2; + + /* TODO: Use appropriate phymodes */ + if (channel->band == NL80211_BAND_2GHZ) + ch->phy_mode = MODE_11G; + else + ch->phy_mode = MODE_11A; + + if (channel->band == NL80211_BAND_6GHZ && + cfg80211_channel_is_psc(channel)) + ch->psc_channel = true; + + ath12k_dbg(ar->ab, ATH12K_DBG_WMI, + "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", + i, arg->nallchans, + ch->mhz, ch->maxpower, ch->maxregpower, + ch->antennamax, ch->phy_mode); + + ch++; + /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 + * set_agile, reg_class_idx + */ + } + } + + if (wait) { + spin_lock_bh(&ar->data_lock); + list_add_tail(&arg->list, &ar->regd_channel_update_queue); + spin_unlock_bh(&ar->data_lock); + + queue_work(ar->ab->workqueue, &ar->regd_channel_update_work); + + return 0; + } + + ret = ath12k_wmi_send_scan_chan_list_cmd(ar, arg); + kfree(arg); + + return ret; +} + +static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig, + struct ieee80211_regdomain *regd_copy) +{ + u8 i; + + /* The caller should have checked error conditions */ + memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); + + for (i = 0; i < regd_orig->n_reg_rules; i++) + memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], + sizeof(struct ieee80211_reg_rule)); +} + +int ath12k_regd_update(struct ath12k *ar, bool init) +{ + struct ath12k_wmi_hal_reg_capabilities_ext_arg *reg_cap; + u32 phy_id, freq_low, freq_high, supported_bands; + struct ath12k_hw *ah = ath12k_ar_to_ah(ar); + struct ieee80211_hw *hw = ah->hw; + struct ieee80211_regdomain *regd, *regd_copy = NULL; + int ret, regd_len, pdev_id; + struct ath12k_base *ab; + long time_left; + + ab = ar->ab; + + time_left = wait_for_completion_timeout(&ar->regd_update_completed, + ATH12K_REG_UPDATE_TIMEOUT_HZ); + if (time_left == 0) { + ath12k_warn(ab, "Timeout while waiting for regulatory update"); + /* Even though timeout has occurred, still continue since at least boot + * time data would be there to process + */ + } + + supported_bands = ar->pdev->cap.supported_bands; + reg_cap = &ab->hal_reg_cap[ar->pdev_idx]; + + /* Possible that due to reg change, current limits for supported + * frequency changed. Update it. As a first step, reset the + * previous values and then compute and set the new values. + */ + ar->freq_range.start_freq = 0; + ar->freq_range.end_freq = 0; + + if (supported_bands & WMI_HOST_WLAN_2GHZ_CAP) { + if (ab->hw_params->single_pdev_only) { + phy_id = ar->pdev->cap.band[WMI_HOST_WLAN_2GHZ_CAP].phy_id; + reg_cap = &ab->hal_reg_cap[phy_id]; + } + + freq_low = max(reg_cap->low_2ghz_chan, ab->reg_freq_2ghz.start_freq); + freq_high = min(reg_cap->high_2ghz_chan, ab->reg_freq_2ghz.end_freq); + + ath12k_mac_update_freq_range(ar, freq_low, freq_high); + } + + if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && !ar->supports_6ghz) { + if (ab->hw_params->single_pdev_only) { + phy_id = ar->pdev->cap.band[WMI_HOST_WLAN_5GHZ_CAP].phy_id; + reg_cap = &ab->hal_reg_cap[phy_id]; + } + + freq_low = max(reg_cap->low_5ghz_chan, ab->reg_freq_5ghz.start_freq); + freq_high = min(reg_cap->high_5ghz_chan, ab->reg_freq_5ghz.end_freq); + + ath12k_mac_update_freq_range(ar, freq_low, freq_high); + } + + if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && ar->supports_6ghz) { + freq_low = max(reg_cap->low_5ghz_chan, ab->reg_freq_6ghz.start_freq); + freq_high = min(reg_cap->high_5ghz_chan, ab->reg_freq_6ghz.end_freq); + + ath12k_mac_update_freq_range(ar, freq_low, freq_high); + } + + /* If one of the radios within ah has already updated the regd for + * the wiphy, then avoid setting regd again + */ + if (ah->regd_updated) + return 0; + + /* firmware provides reg rules which are similar for 2 GHz and 5 GHz + * pdev but 6 GHz pdev has superset of all rules including rules for + * all bands, we prefer 6 GHz pdev's rules to be used for setup of + * the wiphy regd. + * If 6 GHz pdev was part of the ath12k_hw, wait for the 6 GHz pdev, + * else pick the first pdev which calls this function and use its + * regd to update global hw regd. + * The regd_updated flag set at the end will not allow any further + * updates. + */ + if (ah->use_6ghz_regd && !ar->supports_6ghz) + return 0; + + pdev_id = ar->pdev_idx; + + spin_lock_bh(&ab->base_lock); + + if (init) { + /* Apply the regd received during init through + * WMI_REG_CHAN_LIST_CC event. In case of failure to + * receive the regd, initialize with a default world + * regulatory. + */ + if (ab->default_regd[pdev_id]) { + regd = ab->default_regd[pdev_id]; + } else { + ath12k_warn(ab, + "failed to receive default regd during init\n"); + regd = (struct ieee80211_regdomain *)&ath12k_world_regd; + } + } else { + regd = ab->new_regd[pdev_id]; + } + + if (!regd) { + ret = -EINVAL; + spin_unlock_bh(&ab->base_lock); + goto err; + } + + regd_len = sizeof(*regd) + (regd->n_reg_rules * + sizeof(struct ieee80211_reg_rule)); + + regd_copy = kzalloc(regd_len, GFP_ATOMIC); + if (regd_copy) + ath12k_copy_regd(regd, regd_copy); + + spin_unlock_bh(&ab->base_lock); + + if (!regd_copy) { + ret = -ENOMEM; + goto err; + } + + ret = regulatory_set_wiphy_regd(hw->wiphy, regd_copy); + + kfree(regd_copy); + + if (ret) + goto err; + + if (ah->state != ATH12K_HW_STATE_ON) + goto skip; + + ah->regd_updated = true; + +skip: + return 0; +err: + ath12k_warn(ab, "failed to perform regd update : %d\n", ret); + return ret; +} + +static enum nl80211_dfs_regions +ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region) +{ + switch (dfs_region) { + case ATH12K_DFS_REG_FCC: + case ATH12K_DFS_REG_CN: + return NL80211_DFS_FCC; + case ATH12K_DFS_REG_ETSI: + case ATH12K_DFS_REG_KR: + return NL80211_DFS_ETSI; + case ATH12K_DFS_REG_MKK: + case ATH12K_DFS_REG_MKK_N: + return NL80211_DFS_JP; + default: + return NL80211_DFS_UNSET; + } +} + +static u32 ath12k_get_bw_reg_flags(u16 max_bw) +{ + switch (max_bw) { + case 20: + return NL80211_RRF_NO_HT40 | + NL80211_RRF_NO_80MHZ | + NL80211_RRF_NO_160MHZ | + NL80211_RRF_NO_320MHZ; + case 40: + return NL80211_RRF_NO_80MHZ | + NL80211_RRF_NO_160MHZ | + NL80211_RRF_NO_320MHZ; + case 80: + return NL80211_RRF_NO_160MHZ | + NL80211_RRF_NO_320MHZ; + case 160: + return NL80211_RRF_NO_320MHZ; + case 320: + default: + return 0; + } +} + +static u32 ath12k_map_fw_reg_flags(u16 reg_flags) +{ + u32 flags = 0; + + if (reg_flags & REGULATORY_CHAN_NO_IR) + flags = NL80211_RRF_NO_IR; + + if (reg_flags & REGULATORY_CHAN_RADAR) + flags |= NL80211_RRF_DFS; + + if (reg_flags & REGULATORY_CHAN_NO_OFDM) + flags |= NL80211_RRF_NO_OFDM; + + if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) + flags |= NL80211_RRF_NO_OUTDOOR; + + if (reg_flags & REGULATORY_CHAN_NO_HT40) + flags |= NL80211_RRF_NO_HT40; + + if (reg_flags & REGULATORY_CHAN_NO_80MHZ) + flags |= NL80211_RRF_NO_80MHZ; + + if (reg_flags & REGULATORY_CHAN_NO_160MHZ) + flags |= NL80211_RRF_NO_160MHZ; + + return flags; +} + +static u32 ath12k_map_fw_phy_flags(u32 phy_flags) +{ + u32 flags = 0; + + if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11AX) + flags |= NL80211_RRF_NO_HE; + + if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11BE) + flags |= NL80211_RRF_NO_EHT; + + return flags; +} + +static const char * +ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) +{ + switch (dfs_region) { + case NL80211_DFS_FCC: + return "FCC"; + case NL80211_DFS_ETSI: + return "ETSI"; + case NL80211_DFS_JP: + return "JP"; + default: + return "UNSET"; + } +} + +static u16 +ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) +{ + u16 bw; + + bw = end_freq - start_freq; + bw = min_t(u16, bw, max_bw); + + if (bw >= 80 && bw < 160) + bw = 80; + else if (bw >= 40 && bw < 80) + bw = 40; + else if (bw < 40) + bw = 20; + + return bw; +} + +static void +ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, + u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, + s8 psd, u32 reg_flags) +{ + reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); + reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); + reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); + reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); + reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); + reg_rule->psd = psd; + reg_rule->flags = reg_flags; +} + +static void +ath12k_reg_update_weather_radar_band(struct ath12k_base *ab, + struct ieee80211_regdomain *regd, + struct ath12k_reg_rule *reg_rule, + u8 *rule_idx, u32 flags, u16 max_bw) +{ + u32 end_freq; + u16 bw; + u8 i; + + i = *rule_idx; + + bw = ath12k_reg_adjust_bw(reg_rule->start_freq, + ETSI_WEATHER_RADAR_BAND_LOW, max_bw); + + ath12k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq, + ETSI_WEATHER_RADAR_BAND_LOW, bw, + reg_rule->ant_gain, reg_rule->reg_power, + reg_rule->psd_eirp, flags); + + ath12k_dbg(ab, ATH12K_DBG_REG, + "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", + i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, + bw, reg_rule->ant_gain, reg_rule->reg_power, + regd->reg_rules[i].dfs_cac_ms, + flags); + + if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) + end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; + else + end_freq = reg_rule->end_freq; + + bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, + max_bw); + + i++; + + ath12k_reg_update_rule(regd->reg_rules + i, + ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, + reg_rule->ant_gain, reg_rule->reg_power, + reg_rule->psd_eirp, flags); + + regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; + + ath12k_dbg(ab, ATH12K_DBG_REG, + "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", + i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, + bw, reg_rule->ant_gain, reg_rule->reg_power, + regd->reg_rules[i].dfs_cac_ms, + flags); + + if (end_freq == reg_rule->end_freq) { + regd->n_reg_rules--; + *rule_idx = i; + return; + } + + bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, + reg_rule->end_freq, max_bw); + + i++; + + ath12k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, + reg_rule->end_freq, bw, + reg_rule->ant_gain, reg_rule->reg_power, + reg_rule->psd_eirp, flags); + + ath12k_dbg(ab, ATH12K_DBG_REG, + "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", + i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, + bw, reg_rule->ant_gain, reg_rule->reg_power, + regd->reg_rules[i].dfs_cac_ms, + flags); + + *rule_idx = i; +} + +static void ath12k_reg_update_freq_range(struct ath12k_reg_freq *reg_freq, + struct ath12k_reg_rule *reg_rule) +{ + if (reg_freq->start_freq > reg_rule->start_freq) + reg_freq->start_freq = reg_rule->start_freq; + + if (reg_freq->end_freq < reg_rule->end_freq) + reg_freq->end_freq = reg_rule->end_freq; +} + +enum wmi_reg_6g_ap_type +ath12k_reg_ap_pwr_convert(enum ieee80211_ap_reg_power power_type) +{ + switch (power_type) { + case IEEE80211_REG_LPI_AP: + return WMI_REG_INDOOR_AP; + case IEEE80211_REG_SP_AP: + return WMI_REG_STD_POWER_AP; + case IEEE80211_REG_VLP_AP: + return WMI_REG_VLP_AP; + default: + return WMI_REG_MAX_AP_TYPE; + } +} + +struct ieee80211_regdomain * +ath12k_reg_build_regd(struct ath12k_base *ab, + struct ath12k_reg_info *reg_info, + enum wmi_vdev_type vdev_type, + enum ieee80211_ap_reg_power power_type) +{ + struct ieee80211_regdomain *new_regd = NULL; + struct ath12k_reg_rule *reg_rule, *reg_rule_6ghz; + u32 flags, reg_6ghz_number, max_bw_6ghz; + u8 i = 0, j = 0, k = 0; + u8 num_rules; + u16 max_bw; + char alpha2[3]; + + num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; + + if (reg_info->is_ext_reg_event) { + if (vdev_type == WMI_VDEV_TYPE_STA) { + enum wmi_reg_6g_ap_type ap_type; + + ap_type = ath12k_reg_ap_pwr_convert(power_type); + if (ap_type == WMI_REG_MAX_AP_TYPE) + ap_type = WMI_REG_INDOOR_AP; + + reg_6ghz_number = reg_info->num_6g_reg_rules_cl + [ap_type][WMI_REG_DEFAULT_CLIENT]; + if (reg_6ghz_number == 0) { + ap_type = WMI_REG_INDOOR_AP; + reg_6ghz_number = reg_info->num_6g_reg_rules_cl + [ap_type][WMI_REG_DEFAULT_CLIENT]; + } + + reg_rule_6ghz = reg_info->reg_rules_6g_client_ptr + [ap_type][WMI_REG_DEFAULT_CLIENT]; + max_bw_6ghz = reg_info->max_bw_6g_client + [ap_type][WMI_REG_DEFAULT_CLIENT]; + } else { + reg_6ghz_number = reg_info->num_6g_reg_rules_ap + [WMI_REG_INDOOR_AP]; + reg_rule_6ghz = + reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP]; + max_bw_6ghz = reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]; + } + + num_rules += reg_6ghz_number; + } + + if (!num_rules) + goto ret; + + /* Add max additional rules to accommodate weather radar band */ + if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI) + num_rules += 2; + + new_regd = kzalloc(sizeof(*new_regd) + + (num_rules * sizeof(struct ieee80211_reg_rule)), + GFP_ATOMIC); + if (!new_regd) + goto ret; + + memcpy(new_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); + memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); + alpha2[2] = '\0'; + new_regd->dfs_region = ath12k_map_fw_dfs_region(reg_info->dfs_region); + + ath12k_dbg(ab, ATH12K_DBG_REG, + "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", + alpha2, ath12k_reg_get_regdom_str(new_regd->dfs_region), + reg_info->dfs_region, num_rules); + + /* Reset start and end frequency for each band + */ + ab->reg_freq_5ghz.start_freq = INT_MAX; + ab->reg_freq_5ghz.end_freq = 0; + ab->reg_freq_2ghz.start_freq = INT_MAX; + ab->reg_freq_2ghz.end_freq = 0; + ab->reg_freq_6ghz.start_freq = INT_MAX; + ab->reg_freq_6ghz.end_freq = 0; + + /* Update reg_rules[] below. Firmware is expected to + * send these rules in order(2G rules first and then 5G) + */ + for (; i < num_rules; i++) { + if (reg_info->num_2g_reg_rules && + (i < reg_info->num_2g_reg_rules)) { + reg_rule = reg_info->reg_rules_2g_ptr + i; + max_bw = min_t(u16, reg_rule->max_bw, + reg_info->max_bw_2g); + flags = ath12k_get_bw_reg_flags(reg_info->max_bw_2g); + ath12k_reg_update_freq_range(&ab->reg_freq_2ghz, reg_rule); + } else if (reg_info->num_5g_reg_rules && + (j < reg_info->num_5g_reg_rules)) { + reg_rule = reg_info->reg_rules_5g_ptr + j++; + max_bw = min_t(u16, reg_rule->max_bw, + reg_info->max_bw_5g); + + /* FW doesn't pass NL80211_RRF_AUTO_BW flag for + * BW Auto correction, we can enable this by default + * for all 5G rules here. The regulatory core performs + * BW correction if required and applies flags as + * per other BW rule flags we pass from here + */ + flags = NL80211_RRF_AUTO_BW | + ath12k_get_bw_reg_flags(reg_info->max_bw_5g); + ath12k_reg_update_freq_range(&ab->reg_freq_5ghz, reg_rule); + } else if (reg_info->is_ext_reg_event && reg_6ghz_number && + (k < reg_6ghz_number)) { + reg_rule = reg_rule_6ghz + k++; + max_bw = min_t(u16, reg_rule->max_bw, max_bw_6ghz); + flags = NL80211_RRF_AUTO_BW | + ath12k_get_bw_reg_flags(max_bw_6ghz); + if (reg_rule->psd_flag) + flags |= NL80211_RRF_PSD; + ath12k_reg_update_freq_range(&ab->reg_freq_6ghz, reg_rule); + } else { + break; + } + + flags |= ath12k_map_fw_reg_flags(reg_rule->flags); + flags |= ath12k_map_fw_phy_flags(reg_info->phybitmap); + + ath12k_reg_update_rule(new_regd->reg_rules + i, + reg_rule->start_freq, + reg_rule->end_freq, max_bw, + reg_rule->ant_gain, reg_rule->reg_power, + reg_rule->psd_eirp, flags); + + /* Update dfs cac timeout if the dfs domain is ETSI and the + * new rule covers weather radar band. + * Default value of '0' corresponds to 60s timeout, so no + * need to update that for other rules. + */ + if (flags & NL80211_RRF_DFS && + reg_info->dfs_region == ATH12K_DFS_REG_ETSI && + (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && + reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ + ath12k_reg_update_weather_radar_band(ab, new_regd, + reg_rule, &i, + flags, max_bw); + continue; + } + + if (reg_info->is_ext_reg_event) { + ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", + i + 1, reg_rule->start_freq, reg_rule->end_freq, + max_bw, reg_rule->ant_gain, reg_rule->reg_power, + new_regd->reg_rules[i].dfs_cac_ms, + flags, reg_rule->psd_flag, reg_rule->psd_eirp); + } else { + ath12k_dbg(ab, ATH12K_DBG_REG, + "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", + i + 1, reg_rule->start_freq, reg_rule->end_freq, + max_bw, reg_rule->ant_gain, reg_rule->reg_power, + new_regd->reg_rules[i].dfs_cac_ms, + flags); + } + } + + new_regd->n_reg_rules = i; +ret: + return new_regd; +} + +void ath12k_regd_update_chan_list_work(struct work_struct *work) +{ + struct ath12k *ar = container_of(work, struct ath12k, + regd_channel_update_work); + struct ath12k_wmi_scan_chan_list_arg *arg; + struct list_head local_update_list; + int left; + + INIT_LIST_HEAD(&local_update_list); + + spin_lock_bh(&ar->data_lock); + list_splice_tail_init(&ar->regd_channel_update_queue, &local_update_list); + spin_unlock_bh(&ar->data_lock); + + while ((arg = list_first_entry_or_null(&local_update_list, + struct ath12k_wmi_scan_chan_list_arg, + list))) { + if (ar->state_11d != ATH12K_11D_IDLE) { + left = wait_for_completion_timeout(&ar->completed_11d_scan, + ATH12K_SCAN_TIMEOUT_HZ); + if (!left) { + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "failed to receive 11d scan complete: timed out\n"); + ar->state_11d = ATH12K_11D_IDLE; + } + + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "reg 11d scan wait left time %d\n", left); + } + + if ((ar->scan.state == ATH12K_SCAN_STARTING || + ar->scan.state == ATH12K_SCAN_RUNNING)) { + left = wait_for_completion_timeout(&ar->scan.completed, + ATH12K_SCAN_TIMEOUT_HZ); + if (!left) + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "failed to receive hw scan complete: timed out\n"); + + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "reg hw scan wait left time %d\n", left); + } + + ath12k_wmi_send_scan_chan_list_cmd(ar, arg); + list_del(&arg->list); + kfree(arg); + } +} + +void ath12k_regd_update_work(struct work_struct *work) +{ + struct ath12k *ar = container_of(work, struct ath12k, + regd_update_work); + int ret; + + ret = ath12k_regd_update(ar, false); + if (ret) { + /* Firmware has already moved to the new regd. We need + * to maintain channel consistency across FW, Host driver + * and userspace. Hence as a fallback mechanism we can set + * the prev or default country code to the firmware. + */ + /* TODO: Implement Fallback Mechanism */ + } +} + +void ath12k_reg_reset_reg_info(struct ath12k_reg_info *reg_info) +{ + u8 i, j; + + if (!reg_info) + return; + + kfree(reg_info->reg_rules_2g_ptr); + kfree(reg_info->reg_rules_5g_ptr); + + if (reg_info->is_ext_reg_event) { + for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) { + kfree(reg_info->reg_rules_6g_ap_ptr[i]); + + for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++) + kfree(reg_info->reg_rules_6g_client_ptr[i][j]); + } + } +} + +enum ath12k_reg_status ath12k_reg_validate_reg_info(struct ath12k_base *ab, + struct ath12k_reg_info *reg_info) +{ + int pdev_idx = reg_info->phy_id; + + if (reg_info->status_code != REG_SET_CC_STATUS_PASS) { + /* In case of failure to set the requested country, + * firmware retains the current regd. We print a failure info + * and return from here. + */ + ath12k_warn(ab, "Failed to set the requested Country regulatory setting\n"); + return ATH12K_REG_STATUS_DROP; + } + + if (pdev_idx >= ab->num_radios) { + /* Process the event for phy0 only if single_pdev_only + * is true. If pdev_idx is valid but not 0, discard the + * event. Otherwise, it goes to fallback. + */ + if (ab->hw_params->single_pdev_only && + pdev_idx < ab->hw_params->num_rxdma_per_pdev) + return ATH12K_REG_STATUS_DROP; + else + return ATH12K_REG_STATUS_FALLBACK; + } + + /* Avoid multiple overwrites to default regd, during core + * stop-start after mac registration. + */ + if (ab->default_regd[pdev_idx] && !ab->new_regd[pdev_idx] && + !memcmp(ab->default_regd[pdev_idx]->alpha2, + reg_info->alpha2, 2)) + return ATH12K_REG_STATUS_DROP; + + return ATH12K_REG_STATUS_VALID; +} + +int ath12k_reg_handle_chan_list(struct ath12k_base *ab, + struct ath12k_reg_info *reg_info, + enum wmi_vdev_type vdev_type, + enum ieee80211_ap_reg_power power_type) +{ + struct ieee80211_regdomain *regd = NULL; + int pdev_idx = reg_info->phy_id; + struct ath12k *ar; + + regd = ath12k_reg_build_regd(ab, reg_info, vdev_type, power_type); + if (!regd) + return -EINVAL; + + spin_lock_bh(&ab->base_lock); + if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags)) { + /* Once mac is registered, ar is valid and all CC events from + * firmware is considered to be received due to user requests + * currently. + * Free previously built regd before assigning the newly + * generated regd to ar. NULL pointer handling will be + * taken care by kfree itself. + */ + ar = ab->pdevs[pdev_idx].ar; + kfree(ab->new_regd[pdev_idx]); + ab->new_regd[pdev_idx] = regd; + queue_work(ab->workqueue, &ar->regd_update_work); + } else { + /* Multiple events for the same *ar is not expected. But we + * can still clear any previously stored default_regd if we + * are receiving this event for the same radio by mistake. + * NULL pointer handling will be taken care by kfree itself. + */ + kfree(ab->default_regd[pdev_idx]); + /* This regd would be applied during mac registration */ + ab->default_regd[pdev_idx] = regd; + } + ab->dfs_region = reg_info->dfs_region; + spin_unlock_bh(&ab->base_lock); + + return 0; +} + +void ath12k_reg_init(struct ieee80211_hw *hw) +{ + hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; + hw->wiphy->flags |= WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER; + hw->wiphy->reg_notifier = ath12k_reg_notifier; +} + +void ath12k_reg_free(struct ath12k_base *ab) +{ + int i; + + mutex_lock(&ab->core_lock); + for (i = 0; i < MAX_RADIOS; i++) { + ath12k_reg_reset_reg_info(ab->reg_info[i]); + kfree(ab->reg_info[i]); + ab->reg_info[i] = NULL; + } + + for (i = 0; i < ab->hw_params->max_radios; i++) { + kfree(ab->default_regd[i]); + kfree(ab->new_regd[i]); + ab->default_regd[i] = NULL; + ab->new_regd[i] = NULL; + } + mutex_unlock(&ab->core_lock); +} |