[PATCH 41/50] wifi: ath12k: add reg.c

Kalle Valo
2022-08-12T16:09:54Z

From: Kalle Valo <quic_kvalo@quicinc.com>

(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 <quic_kvalo@quicinc.com>
---
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 <linux/rtnetlink.h>
+#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(&regd_copy->reg_rules[i], &regd_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]);
+ }
+}