diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/reg.c')
-rw-r--r-- | drivers/net/wireless/ath/ath11k/reg.c | 250 |
1 files changed, 235 insertions, 15 deletions
diff --git a/drivers/net/wireless/ath/ath11k/reg.c b/drivers/net/wireless/ath/ath11k/reg.c index 3c7debae80..d4fd3509e6 100644 --- a/drivers/net/wireless/ath/ath11k/reg.c +++ b/drivers/net/wireless/ath/ath11k/reg.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved. */ #include <linux/rtnetlink.h> @@ -617,25 +618,68 @@ ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, *rule_idx = i; } +enum wmi_reg_6ghz_ap_type +ath11k_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_STANDARD_POWER_AP; + case IEEE80211_REG_VLP_AP: + return WMI_REG_VERY_LOW_POWER_AP; + default: + return WMI_REG_MAX_AP_TYPE; + } +} + struct ieee80211_regdomain * ath11k_reg_build_regd(struct ath11k_base *ab, - struct cur_regulatory_info *reg_info, bool intersect) + struct cur_regulatory_info *reg_info, bool intersect, + enum wmi_vdev_type vdev_type, + enum ieee80211_ap_reg_power power_type) { struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; - struct cur_reg_rule *reg_rule; + struct cur_reg_rule *reg_rule, *reg_rule_6ghz; u8 i = 0, j = 0, k = 0; u8 num_rules; u16 max_bw; - u32 flags; + u32 flags, reg_6ghz_number, max_bw_6ghz; char alpha2[3]; num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; - /* FIXME: Currently taking reg rules for 6 GHz only from Indoor AP mode list. - * This can be updated after complete 6 GHz regulatory support is added. - */ - if (reg_info->is_ext_reg_event) - num_rules += reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; + if (reg_info->is_ext_reg_event) { + if (vdev_type == WMI_VDEV_TYPE_STA) { + enum wmi_reg_6ghz_ap_type ap_type; + + ap_type = ath11k_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_6ghz_rules_client + [ap_type][WMI_REG_DEFAULT_CLIENT]; + + if (reg_6ghz_number == 0) { + ap_type = WMI_REG_INDOOR_AP; + reg_6ghz_number = reg_info->num_6ghz_rules_client + [ap_type][WMI_REG_DEFAULT_CLIENT]; + } + + reg_rule_6ghz = reg_info->reg_rules_6ghz_client_ptr + [ap_type][WMI_REG_DEFAULT_CLIENT]; + max_bw_6ghz = reg_info->max_bw_6ghz_client + [ap_type][WMI_REG_DEFAULT_CLIENT]; + } else { + reg_6ghz_number = reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; + reg_rule_6ghz = + reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP]; + max_bw_6ghz = reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]; + } + + num_rules += reg_6ghz_number; + } if (!num_rules) goto ret; @@ -682,13 +726,10 @@ ath11k_reg_build_regd(struct ath11k_base *ab, * 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_6ghz_rules_ap[WMI_REG_INDOOR_AP] && - (k < reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP])) { - reg_rule = reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP] + - k++; - max_bw = min_t(u16, reg_rule->max_bw, - reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]); + } 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; } else { break; @@ -757,6 +798,159 @@ ret: return new_regd; } +static bool ath11k_reg_is_world_alpha(char *alpha) +{ + if (alpha[0] == '0' && alpha[1] == '0') + return true; + + if (alpha[0] == 'n' && alpha[1] == 'a') + return true; + + return false; +} + +static enum wmi_vdev_type ath11k_reg_get_ar_vdev_type(struct ath11k *ar) +{ + struct ath11k_vif *arvif; + + /* Currently each struct ath11k maps to one struct ieee80211_hw/wiphy + * and one struct ieee80211_regdomain, so it could only store one group + * reg rules. It means multi-interface concurrency in the same ath11k is + * not support for the regdomain. So get the vdev type of the first entry + * now. After concurrency support for the regdomain, this should change. + */ + arvif = list_first_entry_or_null(&ar->arvifs, struct ath11k_vif, list); + if (arvif) + return arvif->vdev_type; + + return WMI_VDEV_TYPE_UNSPEC; +} + +int ath11k_reg_handle_chan_list(struct ath11k_base *ab, + struct cur_regulatory_info *reg_info, + enum ieee80211_ap_reg_power power_type) +{ + struct ieee80211_regdomain *regd; + bool intersect = false; + int pdev_idx; + struct ath11k *ar; + enum wmi_vdev_type vdev_type; + + ath11k_dbg(ab, ATH11K_DBG_WMI, "event reg handle chan list"); + + if (reg_info->status_code != REG_SET_CC_STATUS_PASS) { + /* In case of failure to set the requested ctry, + * fw retains the current regd. We print a failure info + * and return from here. + */ + ath11k_warn(ab, "Failed to set the requested Country regulatory setting\n"); + return -EINVAL; + } + + pdev_idx = reg_info->phy_id; + + /* Avoid default reg rule updates sent during FW recovery if + * it is already available + */ + spin_lock_bh(&ab->base_lock); + if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags) && + ab->default_regd[pdev_idx]) { + spin_unlock_bh(&ab->base_lock); + goto retfail; + } + spin_unlock_bh(&ab->base_lock); + + 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. In either case + * ath11k_reg_reset_info() needs to be called to avoid + * memory leak issue. + */ + ath11k_reg_reset_info(reg_info); + + if (ab->hw_params.single_pdev_only && + pdev_idx < ab->hw_params.num_rxmda_per_pdev) + return 0; + goto 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((char *)ab->default_regd[pdev_idx]->alpha2, + (char *)reg_info->alpha2, 2)) + goto retfail; + + /* Intersect new rules with default regd if a new country setting was + * requested, i.e a default regd was already set during initialization + * and the regd coming from this event has a valid country info. + */ + if (ab->default_regd[pdev_idx] && + !ath11k_reg_is_world_alpha((char *) + ab->default_regd[pdev_idx]->alpha2) && + !ath11k_reg_is_world_alpha((char *)reg_info->alpha2)) + intersect = true; + + ar = ab->pdevs[pdev_idx].ar; + vdev_type = ath11k_reg_get_ar_vdev_type(ar); + + ath11k_dbg(ab, ATH11K_DBG_WMI, + "wmi handle chan list power type %d vdev type %d intersect %d\n", + power_type, vdev_type, intersect); + + regd = ath11k_reg_build_regd(ab, reg_info, intersect, vdev_type, power_type); + if (!regd) { + ath11k_warn(ab, "failed to build regd from reg_info\n"); + goto fallback; + } + + if (power_type == IEEE80211_REG_UNSET_AP) { + ath11k_reg_reset_info(&ab->reg_info_store[pdev_idx]); + ab->reg_info_store[pdev_idx] = *reg_info; + } + + spin_lock_bh(&ab->base_lock); + if (ab->default_regd[pdev_idx]) { + /* The initial rules from FW after WMI Init is to build + * the default regd. From then on, any rules updated for + * the pdev could be due to user reg changes. + * 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 { + /* This regd would be applied during mac registration and is + * held constant throughout for regd intersection purpose + */ + ab->default_regd[pdev_idx] = regd; + } + ab->dfs_region = reg_info->dfs_region; + spin_unlock_bh(&ab->base_lock); + + return 0; + +fallback: + /* Fallback to older reg (by sending previous country setting + * again if fw has succeeded and we failed to process here. + * The Regdomain should be uniform across driver and fw. Since the + * FW has processed the command and sent a success status, we expect + * this function to succeed as well. If it doesn't, CTRY needs to be + * reverted at the fw and the old SCAN_CHAN_LIST cmd needs to be sent. + */ + /* TODO: This is rare, but still should also be handled */ + WARN_ON(1); + +retfail: + + return -EINVAL; +} + void ath11k_regd_update_work(struct work_struct *work) { struct ath11k *ar = container_of(work, struct ath11k, @@ -780,10 +974,36 @@ void ath11k_reg_init(struct ath11k *ar) ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; } +void ath11k_reg_reset_info(struct cur_regulatory_info *reg_info) +{ + int i, j; + + if (!reg_info) + return; + + kfree(reg_info->reg_rules_2ghz_ptr); + kfree(reg_info->reg_rules_5ghz_ptr); + + for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) { + kfree(reg_info->reg_rules_6ghz_ap_ptr[i]); + + for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++) + kfree(reg_info->reg_rules_6ghz_client_ptr[i][j]); + } + + memset(reg_info, 0, sizeof(*reg_info)); +} + void ath11k_reg_free(struct ath11k_base *ab) { int i; + for (i = 0; i < ab->num_radios; i++) + ath11k_reg_reset_info(&ab->reg_info_store[i]); + + kfree(ab->reg_info_store); + ab->reg_info_store = NULL; + for (i = 0; i < ab->hw_params.max_radios; i++) { kfree(ab->default_regd[i]); kfree(ab->new_regd[i]); |