From patchwork Fri Aug 12 16:09:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 597009 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48D95C282E7 for ; Fri, 12 Aug 2022 16:11:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239257AbiHLQLN (ORCPT ); Fri, 12 Aug 2022 12:11:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38040 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239221AbiHLQK6 (ORCPT ); Fri, 12 Aug 2022 12:10:58 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E0542A5719 for ; Fri, 12 Aug 2022 09:10:50 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6E6276158A for ; Fri, 12 Aug 2022 16:10:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 42FC7C433C1; Fri, 12 Aug 2022 16:10:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660320649; bh=QKa8RYa36A8wmj6F+CjEmfOj91FQm0VR5sYv4dES3Xo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ef2YjPBaFD09h0VgSwqcDbELNrdP6vH9p4bpLL1pGwejW6eKQJWSKoyTU5MevEIyd 1vJTX0Sjsr/9/4fSg3l/YsjiaKwl+MMN65EfXpAmeOZVuDNng47qNVKeIvtV4tQBRd j0nUW9quSPWiwqRpjBv68gqJziqbWYNqN1f9pyJL0QYqcDLva/Yd9w1PQEzL+XVArS m/dYAFTHo2T7YPWhxMEk7xGqILjYqsMr0NuTkwWRLkTZiYpWhh8pFKeqLDLiQvTkPS qwY0umK6sPHwszSkFOabk6S1TXLO53GEi3lkn9TqdNcmbT1sP4Z0LJYD4efj5Fs2hf 4LK6a84Les+Iw== From: Kalle Valo To: linux-wireless@vger.kernel.org Cc: ath12k@lists.infradead.org Subject: [PATCH 41/50] wifi: ath12k: add reg.c Date: Fri, 12 Aug 2022 19:09:54 +0300 Message-Id: <20220812161003.27279-42-kvalo@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220812161003.27279-1-kvalo@kernel.org> References: <20220812161003.27279-1-kvalo@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Kalle Valo (Patches split into one patch per file for easier review, but the final commit will be one big patch. See the cover letter for more info.) Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath12k/reg.c | 732 ++++++++++++++++++++++++++++++++++ 1 file changed, 732 insertions(+) diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c new file mode 100644 index 000000000000..6ede91ebc8e1 --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/reg.c @@ -0,0 +1,732 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. + * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ +#include +#include "core.h" +#include "debug.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 ath12k *ar, char *alpha2) +{ + const struct ieee80211_regdomain *regd; + + regd = rcu_dereference_rtnl(ar->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 ath12k *ar = hw->priv; + int ret; + + ath12k_dbg(ar->ab, ATH12K_DBG_REG, + "Regulatory Notification received for %s\n", wiphy_name(wiphy)); + + /* 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(ar, request->alpha2)) { + ath12k_dbg(ar->ab, ATH12K_DBG_REG, "Country is already set\n"); + return; + } + + /* Set the country code to the firmware and wait for + * the WMI_REG_CHAN_LIST_CC EVENT for updating the + * reg info + */ + 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, + "INIT Country code set to fw failed : %d\n", ret); +} + +int ath12k_reg_update_chan_list(struct ath12k *ar) +{ + struct ieee80211_supported_band **bands; + struct ath12k_wmi_scan_chan_list_arg *arg; + struct ieee80211_channel *channel; + struct ieee80211_hw *hw = ar->hw; + struct ath12k_wmi_channel_arg *ch; + enum nl80211_band band; + int num_channels = 0; + int i, ret; + + bands = hw->wiphy->bands; + for (band = 0; band < NUM_NL80211_BANDS; band++) { + if (!bands[band]) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + if (bands[band]->channels[i].flags & + IEEE80211_CHAN_DISABLED) + continue; + + num_channels++; + } + } + + if (WARN_ON(!num_channels)) + 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 (!bands[band]) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + channel = &bands[band]->channels[i]; + + if (channel->flags & IEEE80211_CHAN_DISABLED) + 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 + */ + } + } + + 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 ieee80211_regdomain *regd, *regd_copy = NULL; + int ret, regd_len, pdev_id; + struct ath12k_base *ab; + + ab = ar->ab; + 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; + } + + rtnl_lock(); + wiphy_lock(ar->hw->wiphy); + ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy); + wiphy_unlock(ar->hw->wiphy); + rtnl_unlock(); + + kfree(regd_copy); + + if (ret) + goto err; + + if (ar->state == ATH12K_STATE_ON) { + ret = ath12k_reg_update_chan_list(ar); + if (ret) + goto err; + } + + 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_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 bool +ath12k_reg_can_intersect(struct ieee80211_reg_rule *rule1, + struct ieee80211_reg_rule *rule2) +{ + u32 start_freq1, end_freq1; + u32 start_freq2, end_freq2; + + start_freq1 = rule1->freq_range.start_freq_khz; + start_freq2 = rule2->freq_range.start_freq_khz; + + end_freq1 = rule1->freq_range.end_freq_khz; + end_freq2 = rule2->freq_range.end_freq_khz; + + if ((start_freq1 >= start_freq2 && + start_freq1 < end_freq2) || + (start_freq2 > start_freq1 && + start_freq2 < end_freq1)) + return true; + + /* TODO: Should we restrict intersection feasibility + * based on min bandwidth of the intersected region also, + * say the intersected rule should have a min bandwidth + * of 20MHz? + */ + + return false; +} + +static void ath12k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, + struct ieee80211_reg_rule *rule2, + struct ieee80211_reg_rule *new_rule) +{ + u32 start_freq1, end_freq1; + u32 start_freq2, end_freq2; + u32 freq_diff, max_bw; + + start_freq1 = rule1->freq_range.start_freq_khz; + start_freq2 = rule2->freq_range.start_freq_khz; + + end_freq1 = rule1->freq_range.end_freq_khz; + end_freq2 = rule2->freq_range.end_freq_khz; + + new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, + start_freq2); + new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); + + freq_diff = new_rule->freq_range.end_freq_khz - + new_rule->freq_range.start_freq_khz; + max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, + rule2->freq_range.max_bandwidth_khz); + new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); + + new_rule->power_rule.max_antenna_gain = + min_t(u32, rule1->power_rule.max_antenna_gain, + rule2->power_rule.max_antenna_gain); + + new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, + rule2->power_rule.max_eirp); + + /* Use the flags of both the rules */ + new_rule->flags = rule1->flags | rule2->flags; + + /* To be safe, lts use the max cac timeout of both rules */ + new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, + rule2->dfs_cac_ms); +} + +static struct ieee80211_regdomain * +ath12k_regd_intersect(struct ieee80211_regdomain *default_regd, + struct ieee80211_regdomain *curr_regd) +{ + u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; + struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; + struct ieee80211_regdomain *new_regd = NULL; + u8 i, j, k; + + num_old_regd_rules = default_regd->n_reg_rules; + num_curr_regd_rules = curr_regd->n_reg_rules; + num_new_regd_rules = 0; + + /* Find the number of intersecting rules to allocate new regd memory */ + for (i = 0; i < num_old_regd_rules; i++) { + old_rule = default_regd->reg_rules + i; + for (j = 0; j < num_curr_regd_rules; j++) { + curr_rule = curr_regd->reg_rules + j; + + if (ath12k_reg_can_intersect(old_rule, curr_rule)) + num_new_regd_rules++; + } + } + + if (!num_new_regd_rules) + return NULL; + + new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * + sizeof(struct ieee80211_reg_rule)), + GFP_ATOMIC); + + if (!new_regd) + return NULL; + + /* We set the new country and dfs region directly and only trim + * the freq, power, antenna gain by intersecting with the + * default regdomain. Also MAX of the dfs cac timeout is selected. + */ + new_regd->n_reg_rules = num_new_regd_rules; + memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); + new_regd->dfs_region = curr_regd->dfs_region; + new_rule = new_regd->reg_rules; + + for (i = 0, k = 0; i < num_old_regd_rules; i++) { + old_rule = default_regd->reg_rules + i; + for (j = 0; j < num_curr_regd_rules; j++) { + curr_rule = curr_regd->reg_rules + j; + + if (ath12k_reg_can_intersect(old_rule, curr_rule)) + ath12k_reg_intersect_rules(old_rule, curr_rule, + (new_rule + k++)); + } + } + return new_regd; +} + +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, + 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->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, + 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, + 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, + 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; +} + +struct ieee80211_regdomain * +ath12k_reg_build_regd(struct ath12k_base *ab, + struct ath12k_reg_info *reg_info, bool intersect) +{ + struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; + struct ath12k_reg_rule *reg_rule; + u8 i = 0, j = 0, k = 0; + u8 num_rules; + u16 max_bw; + u32 flags; + char alpha2[3]; + + num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; + + /* FIXME: Currently taking reg rules for 6G only from Indoor AP mode list. + * This can be updated to choose the combination dynamically based on AP + * type and client type, after complete 6G regulatory support is added. + */ + if (reg_info->is_ext_reg_event) + num_rules += reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP]; + + 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; + + tmp_regd = kzalloc(sizeof(*tmp_regd) + + (num_rules * sizeof(struct ieee80211_reg_rule)), + GFP_ATOMIC); + if (!tmp_regd) + goto ret; + + memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); + memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); + alpha2[2] = '\0'; + tmp_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(tmp_regd->dfs_region), + reg_info->dfs_region, num_rules); + /* 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 = 0; + } 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; + } else if (reg_info->is_ext_reg_event && + reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP] && + (k < reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP])) { + reg_rule = reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP] + k++; + max_bw = min_t(u16, reg_rule->max_bw, + reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]); + flags = NL80211_RRF_AUTO_BW; + } else { + break; + } + + flags |= ath12k_map_fw_reg_flags(reg_rule->flags); + + ath12k_reg_update_rule(tmp_regd->reg_rules + i, + reg_rule->start_freq, + reg_rule->end_freq, max_bw, + reg_rule->ant_gain, reg_rule->reg_power, + 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, tmp_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, + tmp_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, + tmp_regd->reg_rules[i].dfs_cac_ms, + flags); + } + } + + tmp_regd->n_reg_rules = i; + + if (intersect) { + default_regd = ab->default_regd[reg_info->phy_id]; + + /* Get a new regd by intersecting the received regd with + * our default regd. + */ + new_regd = ath12k_regd_intersect(default_regd, tmp_regd); + kfree(tmp_regd); + if (!new_regd) { + ath12k_warn(ab, "Unable to create intersected regdomain\n"); + goto ret; + } + } else { + new_regd = tmp_regd; + } + +ret: + return new_regd; +} + +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_init(struct ath12k *ar) +{ + ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; + ar->hw->wiphy->reg_notifier = ath12k_reg_notifier; +} + +void ath12k_reg_free(struct ath12k_base *ab) +{ + int i; + + for (i = 0; i < ab->hw_params->max_radios; i++) { + kfree(ab->default_regd[i]); + kfree(ab->new_regd[i]); + } +}